git.oblomov.eu Git - wine/blob - dlls/comctl32/treeview.c

   1 /* Treeview control
   2  *
   3  * Copyright 1998 Eric Kohl <ekohl@abo.rhein-zeitung.de>
   4  * Copyright 1998,1999 Alex Priem <alexp@sci.kun.nl>
   5  * Copyright 1999 Sylvain St-Germain
   6  * Copyright 2002 CodeWeavers, Aric Stewart
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  *
  22  * NOTES
  23  *
  24  * Note that TREEVIEW_INFO * and HTREEITEM are the same thing.
  25  *
  26  * Note2: All items always! have valid (allocated) pszText field.
  27  *      If item's text == LPSTR_TEXTCALLBACKA we allocate buffer
  28  *      of size TEXT_CALLBACK_SIZE in DoSetItem.
  29  *      We use callbackMask to keep track of fields to be updated.
  30  *
  31  * TODO:
  32  *   missing notifications: NM_SETCURSOR, TVN_GETINFOTIP, TVN_KEYDOWN,
  33  *      TVN_SETDISPINFO, TVN_SINGLEEXPAND
  34  *
  35  *   missing styles: TVS_FULLROWSELECT, TVS_INFOTIP, TVS_RTLREADING,
  36  *
  37  *   missing item styles: TVIS_CUT, TVIS_EXPANDPARTIAL
  38  *
  39  *   Make the insertion mark look right.
  40  *   Scroll (instead of repaint) as much as possible.
  41  */
  42
  43 #include "config.h"
  44 #include "wine/port.h"
  45
  46 #include <assert.h>
  47 #include <ctype.h>
  48 #include <stdarg.h>
  49 #include <string.h>
  50 #include <limits.h>
  51 #include <stdlib.h>
  52
  53 #define NONAMELESSUNION
  54 #define NONAMELESSSTRUCT
  55 #include "windef.h"
  56 #include "winbase.h"
  57 #include "wingdi.h"
  58 #include "winuser.h"
  59 #include "winnls.h"
  60 #include "commctrl.h"
  61 #include "comctl32.h"
  62 #include "uxtheme.h"
  63 #include "tmschema.h"
  64 #include "wine/unicode.h"
  65 #include "wine/debug.h"
  66
  67 /* internal structures */
  68
  69 typedef struct _TREEITEM    /* HTREEITEM is a _TREEINFO *. */
  70 {
  71   UINT      callbackMask;
  72   UINT      state;
  73   UINT      stateMask;
  74   LPWSTR    pszText;
  75   int       cchTextMax;
  76   int       iImage;
  77   int       iSelectedImage;
  78   int       cChildren;
  79   LPARAM    lParam;
  80   int       iIntegral;      /* item height multiplier (1 is normal) */
  81   int       iLevel;         /* indentation level:0=root level */
  82   HTREEITEM parent;         /* handle to parent or 0 if at root */
  83   HTREEITEM firstChild;     /* handle to first child or 0 if no child */
  84   HTREEITEM lastChild;
  85   HTREEITEM prevSibling;    /* handle to prev item in list, 0 if first */
  86   HTREEITEM nextSibling;    /* handle to next item in list, 0 if last */
  87   RECT      rect;
  88   LONG      linesOffset;
  89   LONG      stateOffset;
  90   LONG      imageOffset;
  91   LONG      textOffset;
  92   LONG      textWidth;      /* horizontal text extent for pszText */
  93   LONG      visibleOrder;   /* visible ordering, 0 is first visible item */
  94 } TREEVIEW_ITEM;
  95
  96
  97 typedef struct tagTREEVIEW_INFO
  98 {
  99   HWND          hwnd;
 100   HWND          hwndNotify;     /* Owner window to send notifications to */
 101   DWORD         dwStyle;
 102   HTREEITEM     root;
 103   UINT          uInternalStatus;
 104   INT           Timer;
 105   UINT          uNumItems;      /* number of valid TREEVIEW_ITEMs */
 106   INT           cdmode;         /* last custom draw setting */
 107   UINT          uScrollTime;    /* max. time for scrolling in milliseconds */
 108   BOOL          bRedraw;        /* if FALSE we validate but don't redraw in TREEVIEW_Paint() */
 109
 110   UINT          uItemHeight;    /* item height */
 111   BOOL          bHeightSet;
 112
 113   LONG          clientWidth;    /* width of control window */
 114   LONG          clientHeight;   /* height of control window */
 115
 116   LONG          treeWidth;      /* width of visible tree items */
 117   LONG          treeHeight;     /* height of visible tree items */
 118
 119   UINT          uIndent;        /* indentation in pixels */
 120   HTREEITEM     selectedItem;   /* handle to selected item or 0 if none */
 121   HTREEITEM     hotItem;        /* handle currently under cursor, 0 if none */
 122   HTREEITEM     focusedItem;    /* item that was under the cursor when WM_LBUTTONDOWN was received */
 123
 124   HTREEITEM     firstVisible;   /* handle to first visible item */
 125   LONG          maxVisibleOrder;
 126   HTREEITEM     dropItem;       /* handle to item selected by drag cursor */
 127   HTREEITEM     insertMarkItem; /* item after which insertion mark is placed */
 128   BOOL          insertBeforeorAfter; /* flag used by TVM_SETINSERTMARK */
 129   HIMAGELIST    dragList;       /* Bitmap of dragged item */
 130   LONG          scrollX;
 131   COLORREF      clrBk;
 132   COLORREF      clrText;
 133   COLORREF      clrLine;
 134   COLORREF      clrInsertMark;
 135   HFONT         hFont;
 136   HFONT         hDefaultFont;
 137   HFONT         hBoldFont;
 138   HFONT         hUnderlineFont;
 139   HCURSOR       hcurHand;
 140   HWND          hwndToolTip;
 141
 142   HWND          hwndEdit;
 143   WNDPROC       wpEditOrig;     /* orig window proc for subclassing edit */
 144   BOOL          bIgnoreEditKillFocus;
 145   BOOL          bLabelChanged;
 146
 147   BOOL          bNtfUnicode;    /* TRUE if should send NOTIFY with W */
 148   HIMAGELIST    himlNormal;
 149   int           normalImageHeight;
 150   int           normalImageWidth;
 151   HIMAGELIST    himlState;
 152   int           stateImageHeight;
 153   int           stateImageWidth;
 154   HDPA          items;
 155
 156   DWORD lastKeyPressTimestamp; /* Added */
 157   WPARAM charCode; /* Added */
 158   INT nSearchParamLength; /* Added */
 159   WCHAR szSearchParam[ MAX_PATH ]; /* Added */
 160 } TREEVIEW_INFO;
 161
 162
 163 /******** Defines that TREEVIEW_ProcessLetterKeys uses ****************/
 164 #define KEY_DELAY       450
 165
 166 /* bitflags for infoPtr->uInternalStatus */
 167
 168 #define TV_HSCROLL      0x01    /* treeview too large to fit in window */
 169 #define TV_VSCROLL      0x02    /* (horizontal/vertical) */
 170 #define TV_LDRAG                0x04    /* Lbutton pushed to start drag */
 171 #define TV_LDRAGGING    0x08    /* Lbutton pushed, mouse moved. */
 172 #define TV_RDRAG                0x10    /* dito Rbutton */
 173 #define TV_RDRAGGING    0x20
 174
 175 /* bitflags for infoPtr->timer */
 176
 177 #define TV_EDIT_TIMER    2
 178 #define TV_EDIT_TIMER_SET 2
 179
 180
 181 VOID TREEVIEW_Register (VOID);
 182 VOID TREEVIEW_Unregister (VOID);
 183
 184
 185 WINE_DEFAULT_DEBUG_CHANNEL(treeview);
 186
 187
 188 #define TEXT_CALLBACK_SIZE 260
 189
 190 #define TREEVIEW_LEFT_MARGIN 8
 191
 192 #define MINIMUM_INDENT 19
 193
 194 #define CALLBACK_MASK_ALL (TVIF_TEXT|TVIF_CHILDREN|TVIF_IMAGE|TVIF_SELECTEDIMAGE)
 195
 196 #define STATEIMAGEINDEX(x) (((x) >> 12) & 0x0f)
 197 #define OVERLAYIMAGEINDEX(x) (((x) >> 8) & 0x0f)
 198 #define ISVISIBLE(x)         ((x)->visibleOrder >= 0)
 199
 200
 201 static const WCHAR themeClass[] = { 'T','r','e','e','v','i','e','w',0 };
 202
 203
 204 typedef VOID (*TREEVIEW_ItemEnumFunc)(TREEVIEW_INFO *, TREEVIEW_ITEM *,LPVOID);
 205
 206
 207 static VOID TREEVIEW_Invalidate(TREEVIEW_INFO *, TREEVIEW_ITEM *);
 208
 209 static LRESULT TREEVIEW_DoSelectItem(TREEVIEW_INFO *, INT, HTREEITEM, INT);
 210 static VOID TREEVIEW_SetFirstVisible(TREEVIEW_INFO *, TREEVIEW_ITEM *, BOOL);
 211 static LRESULT TREEVIEW_EnsureVisible(TREEVIEW_INFO *, HTREEITEM, BOOL);
 212 static LRESULT TREEVIEW_RButtonUp(TREEVIEW_INFO *, LPPOINT);
 213 static LRESULT TREEVIEW_EndEditLabelNow(TREEVIEW_INFO *infoPtr, BOOL bCancel);
 214 static VOID TREEVIEW_UpdateScrollBars(TREEVIEW_INFO *infoPtr);
 215 static LRESULT TREEVIEW_HScroll(TREEVIEW_INFO *, WPARAM);
 216 static INT TREEVIEW_NotifyFormat (TREEVIEW_INFO *infoPtr, HWND wParam, UINT lParam);
 217
 218
 219 /* Random Utilities *****************************************************/
 220
 221 #ifndef NDEBUG
 222 static inline void
 223 TREEVIEW_VerifyTree(TREEVIEW_INFO *infoPtr)
 224 {
 225     (void)infoPtr;
 226 }
 227 #else
 228 /* The definition is at the end of the file. */
 229 static void TREEVIEW_VerifyTree(TREEVIEW_INFO *infoPtr);
 230 #endif
 231
 232 /* Returns the treeview private data if hwnd is a treeview.
 233  * Otherwise returns an undefined value. */
 234 static TREEVIEW_INFO *
 235 TREEVIEW_GetInfoPtr(HWND hwnd)
 236 {
 237     return (TREEVIEW_INFO *)GetWindowLongPtrW(hwnd, 0);
 238 }
 239
 240 /* Don't call this. Nothing wants an item index. */
 241 static inline int
 242 TREEVIEW_GetItemIndex(TREEVIEW_INFO *infoPtr, HTREEITEM handle)
 243 {
 244     assert(infoPtr != NULL);
 245
 246     return DPA_GetPtrIndex(infoPtr->items, handle);
 247 }
 248
 249 /* Checks if item has changed and needs to be redrawn */
 250 static inline BOOL item_changed (TREEVIEW_ITEM *tiOld, TREEVIEW_ITEM *tiNew, LPTVITEMEXW tvChange)
 251 {
 252     /* Number of children has changed */
 253     if ((tvChange->mask & TVIF_CHILDREN) && (tiOld->cChildren != tiNew->cChildren))
 254         return TRUE;
 255
 256     /* Image has changed and it's not a callback */
 257     if ((tvChange->mask & TVIF_IMAGE) && (tiOld->iImage != tiNew->iImage) &&
 258         tiNew->iImage != I_IMAGECALLBACK)
 259         return TRUE;
 260
 261     /* Selected image has changed and it's not a callback */
 262     if ((tvChange->mask & TVIF_SELECTEDIMAGE) && (tiOld->iSelectedImage != tiNew->iSelectedImage) &&
 263         tiNew->iSelectedImage != I_IMAGECALLBACK)
 264         return TRUE;
 265
 266     /* Text has changed and it's not a callback */
 267     if ((tvChange->mask & TVIF_TEXT) && (tiOld->pszText != tiNew->pszText) &&
 268         tiNew->pszText != LPSTR_TEXTCALLBACKW)
 269         return TRUE;
 270
 271     /* Indent has changed */
 272     if ((tvChange->mask & TVIF_INTEGRAL) && (tiOld->iIntegral != tiNew->iIntegral))
 273         return TRUE;
 274
 275     /* Item state has changed */
 276     if ((tvChange->mask & TVIF_STATE) && ((tiOld->state ^ tiNew->state) & tvChange->stateMask ))
 277         return TRUE;
 278
 279     return FALSE;
 280 }
 281
 282 /***************************************************************************
 283  * This method checks that handle is an item for this tree.
 284  */
 285 static BOOL
 286 TREEVIEW_ValidItem(TREEVIEW_INFO *infoPtr, HTREEITEM handle)
 287 {
 288     if (TREEVIEW_GetItemIndex(infoPtr, handle) == -1)
 289     {
 290         TRACE("invalid item %p\n", handle);
 291         return FALSE;
 292     }
 293     else
 294         return TRUE;
 295 }
 296
 297 static HFONT
 298 TREEVIEW_CreateBoldFont(HFONT hOrigFont)
 299 {
 300     LOGFONTW font;
 301
 302     GetObjectW(hOrigFont, sizeof(font), &font);
 303     font.lfWeight = FW_BOLD;
 304     return CreateFontIndirectW(&font);
 305 }
 306
 307 static HFONT
 308 TREEVIEW_CreateUnderlineFont(HFONT hOrigFont)
 309 {
 310     LOGFONTW font;
 311
 312     GetObjectW(hOrigFont, sizeof(font), &font);
 313     font.lfUnderline = TRUE;
 314     return CreateFontIndirectW(&font);
 315 }
 316
 317 static inline HFONT
 318 TREEVIEW_FontForItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
 319 {
 320     if ((infoPtr->dwStyle & TVS_TRACKSELECT) && (item == infoPtr->hotItem))
 321         return infoPtr->hUnderlineFont;
 322     if (item->state & TVIS_BOLD)
 323         return infoPtr->hBoldFont;
 324     return infoPtr->hFont;
 325 }
 326
 327 /* for trace/debugging purposes only */
 328 static const char *
 329 TREEVIEW_ItemName(TREEVIEW_ITEM *item)
 330 {
 331     if (item == NULL) return "<null item>";
 332     if (item->pszText == LPSTR_TEXTCALLBACKW) return "<callback>";
 333     if (item->pszText == NULL) return "<null>";
 334     return debugstr_w(item->pszText);
 335 }
 336
 337 /* An item is not a child of itself. */
 338 static BOOL
 339 TREEVIEW_IsChildOf(TREEVIEW_ITEM *parent, TREEVIEW_ITEM *child)
 340 {
 341     do
 342     {
 343         child = child->parent;
 344         if (child == parent) return TRUE;
 345     } while (child != NULL);
 346
 347     return FALSE;
 348 }
 349
 350
 351 /* Tree Traversal *******************************************************/
 352
 353 /***************************************************************************
 354  * This method returns the last expanded sibling or child child item
 355  * of a tree node
 356  */
 357 static TREEVIEW_ITEM *
 358 TREEVIEW_GetLastListItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem)
 359 {
 360     if (!wineItem)
 361        return NULL;
 362
 363     while (wineItem->lastChild)
 364     {
 365        if (wineItem->state & TVIS_EXPANDED)
 366           wineItem = wineItem->lastChild;
 367        else
 368           break;
 369     }
 370
 371     if (wineItem == infoPtr->root)
 372         return NULL;
 373
 374     return wineItem;
 375 }
 376
 377 /***************************************************************************
 378  * This method returns the previous non-hidden item in the list not
 379  * considering the tree hierarchy.
 380  */
 381 static TREEVIEW_ITEM *
 382 TREEVIEW_GetPrevListItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *tvItem)
 383 {
 384     if (tvItem->prevSibling)
 385     {
 386         /* This item has a prevSibling, get the last item in the sibling's tree. */
 387         TREEVIEW_ITEM *upItem = tvItem->prevSibling;
 388
 389         if ((upItem->state & TVIS_EXPANDED) && upItem->lastChild != NULL)
 390             return TREEVIEW_GetLastListItem(infoPtr, upItem->lastChild);
 391         else
 392             return upItem;
 393     }
 394     else
 395     {
 396         /* this item does not have a prevSibling, get the parent */
 397         return (tvItem->parent != infoPtr->root) ? tvItem->parent : NULL;
 398     }
 399 }
 400
 401
 402 /***************************************************************************
 403  * This method returns the next physical item in the treeview not
 404  * considering the tree hierarchy.
 405  */
 406 static TREEVIEW_ITEM *
 407 TREEVIEW_GetNextListItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *tvItem)
 408 {
 409     assert(tvItem != NULL);
 410
 411     /*
 412      * If this item has children and is expanded, return the first child
 413      */
 414     if ((tvItem->state & TVIS_EXPANDED) && tvItem->firstChild != NULL)
 415     {
 416         return tvItem->firstChild;
 417     }
 418
 419
 420     /*
 421      * try to get the sibling
 422      */
 423     if (tvItem->nextSibling)
 424         return tvItem->nextSibling;
 425
 426     /*
 427      * Otherwise, get the parent's sibling.
 428      */
 429     while (tvItem->parent)
 430     {
 431         tvItem = tvItem->parent;
 432
 433         if (tvItem->nextSibling)
 434             return tvItem->nextSibling;
 435     }
 436
 437     return NULL;
 438 }
 439
 440 /***************************************************************************
 441  * This method returns the nth item starting at the given item.  It returns
 442  * the last item (or first) we we run out of items.
 443  *
 444  * Will scroll backward if count is <0.
 445  *             forward if count is >0.
 446  */
 447 static TREEVIEW_ITEM *
 448 TREEVIEW_GetListItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
 449                      LONG count)
 450 {
 451     TREEVIEW_ITEM *(*next_item)(TREEVIEW_INFO *, TREEVIEW_ITEM *);
 452     TREEVIEW_ITEM *previousItem;
 453
 454     assert(wineItem != NULL);
 455
 456     if (count > 0)
 457     {
 458         next_item = TREEVIEW_GetNextListItem;
 459     }
 460     else if (count < 0)
 461     {
 462         count = -count;
 463         next_item = TREEVIEW_GetPrevListItem;
 464     }
 465     else
 466         return wineItem;
 467
 468     do
 469     {
 470         previousItem = wineItem;
 471         wineItem = next_item(infoPtr, wineItem);
 472
 473     } while (--count && wineItem != NULL);
 474
 475
 476     return wineItem ? wineItem : previousItem;
 477 }
 478
 479 /* Notifications ************************************************************/
 480
 481 static INT get_notifycode(TREEVIEW_INFO *infoPtr, INT code)
 482 {
 483     if (!infoPtr->bNtfUnicode) {
 484         switch (code) {
 485         case TVN_SELCHANGINGW:    return TVN_SELCHANGINGA;
 486         case TVN_SELCHANGEDW:     return TVN_SELCHANGEDA;
 487         case TVN_GETDISPINFOW:    return TVN_GETDISPINFOA;
 488         case TVN_SETDISPINFOW:    return TVN_SETDISPINFOA;
 489         case TVN_ITEMEXPANDINGW:  return TVN_ITEMEXPANDINGA;
 490         case TVN_ITEMEXPANDEDW:   return TVN_ITEMEXPANDEDA;
 491         case TVN_BEGINDRAGW:      return TVN_BEGINDRAGA;
 492         case TVN_BEGINRDRAGW:     return TVN_BEGINRDRAGA;
 493         case TVN_DELETEITEMW:     return TVN_DELETEITEMA;
 494         case TVN_BEGINLABELEDITW: return TVN_BEGINLABELEDITA;
 495         case TVN_ENDLABELEDITW:   return TVN_ENDLABELEDITA;
 496         case TVN_GETINFOTIPW:     return TVN_GETINFOTIPA;
 497         }
 498     }
 499     return code;
 500 }
 501
 502 static LRESULT
 503 TREEVIEW_SendRealNotify(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
 504 {
 505     TRACE("wParam=%d, lParam=%ld\n", wParam, lParam);
 506     return SendMessageW(infoPtr->hwndNotify, WM_NOTIFY, wParam, lParam);
 507 }
 508
 509 static BOOL
 510 TREEVIEW_SendSimpleNotify(TREEVIEW_INFO *infoPtr, UINT code)
 511 {
 512     NMHDR nmhdr;
 513     HWND hwnd = infoPtr->hwnd;
 514
 515     TRACE("%d\n", code);
 516     nmhdr.hwndFrom = hwnd;
 517     nmhdr.idFrom = GetWindowLongPtrW(hwnd, GWLP_ID);
 518     nmhdr.code = get_notifycode(infoPtr, code);
 519
 520     return (BOOL)TREEVIEW_SendRealNotify(infoPtr,
 521                                   (WPARAM)nmhdr.idFrom, (LPARAM)&nmhdr);
 522 }
 523
 524 static VOID
 525 TREEVIEW_TVItemFromItem(TREEVIEW_INFO *infoPtr, UINT mask, TVITEMW *tvItem, TREEVIEW_ITEM *item)
 526 {
 527     tvItem->mask = mask;
 528     tvItem->hItem = item;
 529     tvItem->state = item->state;
 530     tvItem->stateMask = 0;
 531     tvItem->iImage = item->iImage;
 532     tvItem->iSelectedImage = item->iSelectedImage;
 533     tvItem->cChildren = item->cChildren;
 534     tvItem->lParam = item->lParam;
 535
 536     if(mask & TVIF_TEXT)
 537     {
 538         if (!infoPtr->bNtfUnicode)
 539         {
 540             tvItem->cchTextMax = WideCharToMultiByte( CP_ACP, 0, item->pszText, -1, NULL, 0, NULL, NULL );
 541             tvItem->pszText = Alloc (tvItem->cchTextMax);
 542             WideCharToMultiByte( CP_ACP, 0, item->pszText, -1, (LPSTR)tvItem->pszText, tvItem->cchTextMax, 0, 0 );
 543         }
 544         else
 545         {
 546             tvItem->cchTextMax = item->cchTextMax;
 547             tvItem->pszText = item->pszText;
 548         }
 549     }
 550     else
 551     {
 552         tvItem->cchTextMax = 0;
 553         tvItem->pszText = NULL;
 554     }
 555 }
 556
 557 static BOOL
 558 TREEVIEW_SendTreeviewNotify(TREEVIEW_INFO *infoPtr, UINT code, UINT action,
 559                             UINT mask, HTREEITEM oldItem, HTREEITEM newItem)
 560 {
 561     HWND hwnd = infoPtr->hwnd;
 562     NMTREEVIEWW nmhdr;
 563     BOOL ret;
 564
 565     TRACE("code:%d action:%x olditem:%p newitem:%p\n",
 566           code, action, oldItem, newItem);
 567
 568     ZeroMemory(&nmhdr, sizeof(NMTREEVIEWW));
 569
 570     nmhdr.hdr.hwndFrom = hwnd;
 571     nmhdr.hdr.idFrom = GetWindowLongPtrW(hwnd, GWLP_ID);
 572     nmhdr.hdr.code = get_notifycode(infoPtr, code);
 573     nmhdr.action = action;
 574
 575     if (oldItem)
 576         TREEVIEW_TVItemFromItem(infoPtr, mask, &nmhdr.itemOld, oldItem);
 577
 578     if (newItem)
 579         TREEVIEW_TVItemFromItem(infoPtr, mask, &nmhdr.itemNew, newItem);
 580
 581     nmhdr.ptDrag.x = 0;
 582     nmhdr.ptDrag.y = 0;
 583
 584     ret = (BOOL)TREEVIEW_SendRealNotify(infoPtr,
 585                               (WPARAM)nmhdr.hdr.idFrom,
 586                               (LPARAM)&nmhdr);
 587     if (!infoPtr->bNtfUnicode)
 588     {
 589         Free(nmhdr.itemOld.pszText);
 590         Free(nmhdr.itemNew.pszText);
 591     }
 592     return ret;
 593 }
 594
 595 static BOOL
 596 TREEVIEW_SendTreeviewDnDNotify(TREEVIEW_INFO *infoPtr, UINT code,
 597                                HTREEITEM dragItem, POINT pt)
 598 {
 599     HWND hwnd = infoPtr->hwnd;
 600     NMTREEVIEWW nmhdr;
 601
 602     TRACE("code:%d dragitem:%p\n", code, dragItem);
 603
 604     nmhdr.hdr.hwndFrom = hwnd;
 605     nmhdr.hdr.idFrom = GetWindowLongPtrW(hwnd, GWLP_ID);
 606     nmhdr.hdr.code = get_notifycode(infoPtr, code);
 607     nmhdr.action = 0;
 608     nmhdr.itemNew.mask = TVIF_STATE | TVIF_PARAM | TVIF_HANDLE;
 609     nmhdr.itemNew.hItem = dragItem;
 610     nmhdr.itemNew.state = dragItem->state;
 611     nmhdr.itemNew.lParam = dragItem->lParam;
 612
 613     nmhdr.ptDrag.x = pt.x;
 614     nmhdr.ptDrag.y = pt.y;
 615
 616     return (BOOL)TREEVIEW_SendRealNotify(infoPtr,
 617                               (WPARAM)nmhdr.hdr.idFrom,
 618                               (LPARAM)&nmhdr);
 619 }
 620
 621
 622 static BOOL
 623 TREEVIEW_SendCustomDrawNotify(TREEVIEW_INFO *infoPtr, DWORD dwDrawStage,
 624                               HDC hdc, RECT rc)
 625 {
 626     HWND hwnd = infoPtr->hwnd;
 627     NMTVCUSTOMDRAW nmcdhdr;
 628     LPNMCUSTOMDRAW nmcd;
 629
 630     TRACE("drawstage:%x hdc:%p\n", dwDrawStage, hdc);
 631
 632     nmcd = &nmcdhdr.nmcd;
 633     nmcd->hdr.hwndFrom = hwnd;
 634     nmcd->hdr.idFrom = GetWindowLongPtrW(hwnd, GWLP_ID);
 635     nmcd->hdr.code = NM_CUSTOMDRAW;
 636     nmcd->dwDrawStage = dwDrawStage;
 637     nmcd->hdc = hdc;
 638     nmcd->rc = rc;
 639     nmcd->dwItemSpec = 0;
 640     nmcd->uItemState = 0;
 641     nmcd->lItemlParam = 0;
 642     nmcdhdr.clrText = infoPtr->clrText;
 643     nmcdhdr.clrTextBk = infoPtr->clrBk;
 644     nmcdhdr.iLevel = 0;
 645
 646     return (BOOL)TREEVIEW_SendRealNotify(infoPtr,
 647                               (WPARAM)nmcd->hdr.idFrom,
 648                               (LPARAM)&nmcdhdr);
 649 }
 650
 651
 652
 653 /* FIXME: need to find out when the flags in uItemState need to be set */
 654
 655 static BOOL
 656 TREEVIEW_SendCustomDrawItemNotify(TREEVIEW_INFO *infoPtr, HDC hdc,
 657                                   TREEVIEW_ITEM *wineItem, UINT uItemDrawState,
 658                                   NMTVCUSTOMDRAW *nmcdhdr)
 659 {
 660     HWND hwnd = infoPtr->hwnd;
 661     LPNMCUSTOMDRAW nmcd;
 662     DWORD dwDrawStage;
 663     DWORD_PTR dwItemSpec;
 664     UINT uItemState;
 665     INT retval;
 666
 667     dwDrawStage = CDDS_ITEM | uItemDrawState;
 668     dwItemSpec = (DWORD_PTR)wineItem;
 669     uItemState = 0;
 670     if (wineItem->state & TVIS_SELECTED)
 671         uItemState |= CDIS_SELECTED;
 672     if (wineItem == infoPtr->selectedItem)
 673         uItemState |= CDIS_FOCUS;
 674     if (wineItem == infoPtr->hotItem)
 675         uItemState |= CDIS_HOT;
 676
 677     nmcd = &nmcdhdr->nmcd;
 678     nmcd->hdr.hwndFrom = hwnd;
 679     nmcd->hdr.idFrom = GetWindowLongPtrW(hwnd, GWLP_ID);
 680     nmcd->hdr.code = NM_CUSTOMDRAW;
 681     nmcd->dwDrawStage = dwDrawStage;
 682     nmcd->hdc = hdc;
 683     nmcd->rc = wineItem->rect;
 684     nmcd->dwItemSpec = dwItemSpec;
 685     nmcd->uItemState = uItemState;
 686     nmcd->lItemlParam = wineItem->lParam;
 687     nmcdhdr->iLevel = wineItem->iLevel;
 688
 689     TRACE("drawstage:%x hdc:%p item:%lx, itemstate:%x, lItemlParam:%lx\n",
 690           nmcd->dwDrawStage, nmcd->hdc, nmcd->dwItemSpec,
 691           nmcd->uItemState, nmcd->lItemlParam);
 692
 693     retval = TREEVIEW_SendRealNotify(infoPtr,
 694                           (WPARAM)nmcd->hdr.idFrom,
 695                           (LPARAM)nmcdhdr);
 696
 697     return (BOOL)retval;
 698 }
 699
 700 static BOOL
 701 TREEVIEW_BeginLabelEditNotify(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *editItem)
 702 {
 703     HWND hwnd = infoPtr->hwnd;
 704     NMTVDISPINFOW tvdi;
 705     BOOL ret;
 706
 707     tvdi.hdr.hwndFrom = hwnd;
 708     tvdi.hdr.idFrom = GetWindowLongPtrW(hwnd, GWLP_ID);
 709     tvdi.hdr.code = get_notifycode(infoPtr, TVN_BEGINLABELEDITW);
 710
 711     TREEVIEW_TVItemFromItem(infoPtr, TVIF_HANDLE | TVIF_STATE | TVIF_PARAM | TVIF_TEXT,
 712                             &tvdi.item, editItem);
 713
 714     ret = (BOOL)TREEVIEW_SendRealNotify(infoPtr, tvdi.hdr.idFrom, (LPARAM)&tvdi);
 715
 716     if (!infoPtr->bNtfUnicode)
 717         Free(tvdi.item.pszText);
 718
 719     return ret;
 720 }
 721
 722 static void
 723 TREEVIEW_UpdateDispInfo(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
 724                         UINT mask)
 725 {
 726     NMTVDISPINFOW callback;
 727     HWND hwnd = infoPtr->hwnd;
 728
 729     TRACE("mask %x callbackMask %x\n", mask, wineItem->callbackMask);
 730     mask &= wineItem->callbackMask;
 731
 732     if (mask == 0) return;
 733
 734     callback.hdr.hwndFrom         = hwnd;
 735     callback.hdr.idFrom           = GetWindowLongPtrW(hwnd, GWLP_ID);
 736     callback.hdr.code             = get_notifycode(infoPtr, TVN_GETDISPINFOW);
 737
 738     /* 'state' always contains valid value, as well as 'lParam'.
 739      * All other parameters are uninitialized.
 740      */
 741     callback.item.pszText         = wineItem->pszText;
 742     callback.item.cchTextMax      = wineItem->cchTextMax;
 743     callback.item.mask            = mask;
 744     callback.item.hItem           = wineItem;
 745     callback.item.state           = wineItem->state;
 746     callback.item.lParam          = wineItem->lParam;
 747
 748     /* If text is changed we need to recalculate textWidth */
 749     if (mask & TVIF_TEXT)
 750        wineItem->textWidth = 0;
 751
 752     TREEVIEW_SendRealNotify(infoPtr,
 753                             (WPARAM)callback.hdr.idFrom, (LPARAM)&callback);
 754
 755     /* It may have changed due to a call to SetItem. */
 756     mask &= wineItem->callbackMask;
 757
 758     if ((mask & TVIF_TEXT) && callback.item.pszText != wineItem->pszText)
 759     {
 760         /* Instead of copying text into our buffer user specified its own */
 761         if (!infoPtr->bNtfUnicode) {
 762             LPWSTR newText;
 763             int buflen;
 764             int len = MultiByteToWideChar( CP_ACP, 0,
 765                                            (LPSTR)callback.item.pszText, -1,
 766                                            NULL, 0);
 767             buflen = max((len)*sizeof(WCHAR), TEXT_CALLBACK_SIZE);
 768             newText = (LPWSTR)ReAlloc(wineItem->pszText, buflen);
 769
 770             TRACE("returned str %s, len=%d, buflen=%d\n",
 771                   debugstr_a((LPSTR)callback.item.pszText), len, buflen);
 772
 773             if (newText)
 774             {
 775                 wineItem->pszText = newText;
 776                 MultiByteToWideChar( CP_ACP, 0,
 777                                      (LPSTR)callback.item.pszText, -1,
 778                                      wineItem->pszText, buflen/sizeof(WCHAR));
 779                 wineItem->cchTextMax = buflen/sizeof(WCHAR);
 780             }
 781             /* If ReAlloc fails we have nothing to do, but keep original text */
 782         }
 783         else {
 784             int len = max(lstrlenW(callback.item.pszText) + 1,
 785                           TEXT_CALLBACK_SIZE);
 786             LPWSTR newText = ReAlloc(wineItem->pszText, len);
 787
 788             TRACE("returned wstr %s, len=%d\n",
 789                   debugstr_w(callback.item.pszText), len);
 790
 791             if (newText)
 792             {
 793                 wineItem->pszText = newText;
 794                 strcpyW(wineItem->pszText, callback.item.pszText);
 795                 wineItem->cchTextMax = len;
 796             }
 797             /* If ReAlloc fails we have nothing to do, but keep original text */
 798         }
 799     }
 800     else if (mask & TVIF_TEXT) {
 801         /* User put text into our buffer, that is ok unless A string */
 802         if (!infoPtr->bNtfUnicode) {
 803             LPWSTR newText;
 804             LPWSTR oldText = NULL;
 805             int buflen;
 806             int len = MultiByteToWideChar( CP_ACP, 0,
 807                                           (LPSTR)callback.item.pszText, -1,
 808                                            NULL, 0);
 809             buflen = max((len)*sizeof(WCHAR), TEXT_CALLBACK_SIZE);
 810             newText = (LPWSTR)Alloc(buflen);
 811
 812             TRACE("same buffer str %s, len=%d, buflen=%d\n",
 813                   debugstr_a((LPSTR)callback.item.pszText), len, buflen);
 814
 815             if (newText)
 816             {
 817                 oldText = wineItem->pszText;
 818                 wineItem->pszText = newText;
 819                 MultiByteToWideChar( CP_ACP, 0,
 820                                      (LPSTR)callback.item.pszText, -1,
 821                                      wineItem->pszText, buflen/sizeof(WCHAR));
 822                 wineItem->cchTextMax = buflen/sizeof(WCHAR);
 823                 Free(oldText);
 824             }
 825         }
 826     }
 827
 828     if (mask & TVIF_IMAGE)
 829         wineItem->iImage = callback.item.iImage;
 830
 831     if (mask & TVIF_SELECTEDIMAGE)
 832         wineItem->iSelectedImage = callback.item.iSelectedImage;
 833
 834     if (mask & TVIF_CHILDREN)
 835         wineItem->cChildren = callback.item.cChildren;
 836
 837     /* These members are now permanently set. */
 838     if (callback.item.mask & TVIF_DI_SETITEM)
 839         wineItem->callbackMask &= ~callback.item.mask;
 840 }
 841
 842 /***************************************************************************
 843  * This function uses cChildren field to decide whether the item has
 844  * children or not.
 845  * Note: if this returns TRUE, the child items may not actually exist,
 846  * they could be virtual.
 847  *
 848  * Just use wineItem->firstChild to check for physical children.
 849  */
 850 static BOOL
 851 TREEVIEW_HasChildren(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem)
 852 {
 853     TREEVIEW_UpdateDispInfo(infoPtr, wineItem, TVIF_CHILDREN);
 854
 855     return wineItem->cChildren > 0;
 856 }
 857
 858
 859 /* Item Position ********************************************************/
 860
 861 /* Compute linesOffset, stateOffset, imageOffset, textOffset of an item. */
 862 static VOID
 863 TREEVIEW_ComputeItemInternalMetrics(TREEVIEW_INFO *infoPtr,
 864                                     TREEVIEW_ITEM *item)
 865 {
 866     /* Same effect, different optimisation. */
 867 #if 0
 868     BOOL lar = ((infoPtr->dwStyle & TVS_LINESATROOT)
 869                 && (infoPtr->dwStyle & (TVS_HASLINES|TVS_HASBUTTONS)));
 870 #else
 871     BOOL lar = ((infoPtr->dwStyle
 872                  & (TVS_LINESATROOT|TVS_HASLINES|TVS_HASBUTTONS))
 873                 > TVS_LINESATROOT);
 874 #endif
 875
 876     item->linesOffset = infoPtr->uIndent * (item->iLevel + lar - 1)
 877         - infoPtr->scrollX;
 878     item->stateOffset = item->linesOffset + infoPtr->uIndent;
 879     item->imageOffset = item->stateOffset
 880         + (STATEIMAGEINDEX(item->state) ? infoPtr->stateImageWidth : 0);
 881     item->textOffset  = item->imageOffset + infoPtr->normalImageWidth;
 882 }
 883
 884 static VOID
 885 TREEVIEW_ComputeTextWidth(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item, HDC hDC)
 886 {
 887     HDC hdc;
 888     HFONT hOldFont=0;
 889     SIZE sz;
 890
 891     /* DRAW's OM docker creates items like this */
 892     if (item->pszText == NULL)
 893     {
 894         item->textWidth = 0;
 895         return;
 896     }
 897
 898     if (hDC != 0)
 899     {
 900         hdc = hDC;
 901     }
 902     else
 903     {
 904         hdc = GetDC(infoPtr->hwnd);
 905         hOldFont = SelectObject(hdc, TREEVIEW_FontForItem(infoPtr, item));
 906     }
 907
 908     GetTextExtentPoint32W(hdc, item->pszText, strlenW(item->pszText), &sz);
 909     item->textWidth = sz.cx;
 910
 911     if (hDC == 0)
 912     {
 913         SelectObject(hdc, hOldFont);
 914         ReleaseDC(0, hdc);
 915     }
 916 }
 917
 918 static VOID
 919 TREEVIEW_ComputeItemRect(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
 920 {
 921     item->rect.top = infoPtr->uItemHeight *
 922         (item->visibleOrder - infoPtr->firstVisible->visibleOrder);
 923
 924     item->rect.bottom = item->rect.top
 925         + infoPtr->uItemHeight * item->iIntegral - 1;
 926
 927     item->rect.left = 0;
 928     item->rect.right = infoPtr->clientWidth;
 929 }
 930
 931 /* We know that only items after start need their order updated. */
 932 static void
 933 TREEVIEW_RecalculateVisibleOrder(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *start)
 934 {
 935     TREEVIEW_ITEM *item;
 936     int order;
 937
 938     if (!start)
 939     {
 940         start = infoPtr->root->firstChild;
 941         order = 0;
 942     }
 943     else
 944         order = start->visibleOrder;
 945
 946     for (item = start; item != NULL;
 947          item = TREEVIEW_GetNextListItem(infoPtr, item))
 948     {
 949         item->visibleOrder = order;
 950         order += item->iIntegral;
 951     }
 952
 953     infoPtr->maxVisibleOrder = order;
 954
 955     for (item = start; item != NULL;
 956          item = TREEVIEW_GetNextListItem(infoPtr, item))
 957     {
 958         TREEVIEW_ComputeItemRect(infoPtr, item);
 959     }
 960 }
 961
 962
 963 /* Update metrics of all items in selected subtree.
 964  * root must be expanded
 965  */
 966 static VOID
 967 TREEVIEW_UpdateSubTree(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *root)
 968 {
 969    TREEVIEW_ITEM *sibling;
 970    HDC hdc;
 971    HFONT hOldFont;
 972
 973    if (!root->firstChild || !(root->state & TVIS_EXPANDED))
 974       return;
 975
 976    root->state &= ~TVIS_EXPANDED;
 977    sibling = TREEVIEW_GetNextListItem(infoPtr, root);
 978    root->state |= TVIS_EXPANDED;
 979
 980    hdc = GetDC(infoPtr->hwnd);
 981    hOldFont = SelectObject(hdc, infoPtr->hFont);
 982
 983    for (; root != sibling;
 984         root = TREEVIEW_GetNextListItem(infoPtr, root))
 985    {
 986       TREEVIEW_ComputeItemInternalMetrics(infoPtr, root);
 987
 988       if (root->callbackMask & TVIF_TEXT)
 989          TREEVIEW_UpdateDispInfo(infoPtr, root, TVIF_TEXT);
 990
 991       if (root->textWidth == 0)
 992       {
 993          SelectObject(hdc, TREEVIEW_FontForItem(infoPtr, root));
 994          TREEVIEW_ComputeTextWidth(infoPtr, root, hdc);
 995       }
 996    }
 997
 998    SelectObject(hdc, hOldFont);
 999    ReleaseDC(infoPtr->hwnd, hdc);
1000 }
1001
1002 /* Item Allocation **********************************************************/
1003
1004 static TREEVIEW_ITEM *
1005 TREEVIEW_AllocateItem(TREEVIEW_INFO *infoPtr)
1006 {
1007     TREEVIEW_ITEM *newItem = Alloc(sizeof(TREEVIEW_ITEM));
1008
1009     if (!newItem)
1010         return NULL;
1011
1012     /* I_IMAGENONE would make more sense but this is neither what is
1013      * documented (MSDN doesn't specify) nor what Windows actually does
1014      * (it sets it to zero)... and I can so imagine an application using
1015      * inc/dec to toggle the images. */
1016     newItem->iImage = 0;
1017     newItem->iSelectedImage = 0;
1018
1019     if (DPA_InsertPtr(infoPtr->items, INT_MAX, newItem) == -1)
1020     {
1021         Free(newItem);
1022         return NULL;
1023     }
1024
1025     return newItem;
1026 }
1027
1028 /* Exact opposite of TREEVIEW_AllocateItem. In particular, it does not
1029  * free item->pszText. */
1030 static void
1031 TREEVIEW_FreeItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
1032 {
1033     DPA_DeletePtr(infoPtr->items, DPA_GetPtrIndex(infoPtr->items, item));
1034     Free(item);
1035     if (infoPtr->selectedItem == item)
1036         infoPtr->selectedItem = NULL;
1037     if (infoPtr->hotItem == item)
1038         infoPtr->hotItem = NULL;
1039     if (infoPtr->focusedItem == item)
1040         infoPtr->focusedItem = NULL;
1041     if (infoPtr->firstVisible == item)
1042         infoPtr->firstVisible = NULL;
1043     if (infoPtr->dropItem == item)
1044         infoPtr->dropItem = NULL;
1045     if (infoPtr->insertMarkItem == item)
1046         infoPtr->insertMarkItem = NULL;
1047 }
1048
1049
1050 /* Item Insertion *******************************************************/
1051
1052 /***************************************************************************
1053  * This method inserts newItem before sibling as a child of parent.
1054  * sibling can be NULL, but only if parent has no children.
1055  */
1056 static void
1057 TREEVIEW_InsertBefore(TREEVIEW_ITEM *newItem, TREEVIEW_ITEM *sibling,
1058                       TREEVIEW_ITEM *parent)
1059 {
1060     assert(newItem != NULL);
1061     assert(parent != NULL);
1062
1063     if (sibling != NULL)
1064     {
1065         assert(sibling->parent == parent);
1066
1067         if (sibling->prevSibling != NULL)
1068             sibling->prevSibling->nextSibling = newItem;
1069
1070         newItem->prevSibling = sibling->prevSibling;
1071         sibling->prevSibling = newItem;
1072     }
1073     else
1074        newItem->prevSibling = NULL;
1075
1076     newItem->nextSibling = sibling;
1077
1078     if (parent->firstChild == sibling)
1079         parent->firstChild = newItem;
1080
1081     if (parent->lastChild == NULL)
1082         parent->lastChild = newItem;
1083 }
1084
1085 /***************************************************************************
1086  * This method inserts newItem after sibling as a child of parent.
1087  * sibling can be NULL, but only if parent has no children.
1088  */
1089 static void
1090 TREEVIEW_InsertAfter(TREEVIEW_ITEM *newItem, TREEVIEW_ITEM *sibling,
1091                      TREEVIEW_ITEM *parent)
1092 {
1093     assert(newItem != NULL);
1094     assert(parent != NULL);
1095
1096     if (sibling != NULL)
1097     {
1098         assert(sibling->parent == parent);
1099
1100         if (sibling->nextSibling != NULL)
1101             sibling->nextSibling->prevSibling = newItem;
1102
1103         newItem->nextSibling = sibling->nextSibling;
1104         sibling->nextSibling = newItem;
1105     }
1106     else
1107        newItem->nextSibling = NULL;
1108
1109     newItem->prevSibling = sibling;
1110
1111     if (parent->lastChild == sibling)
1112         parent->lastChild = newItem;
1113
1114     if (parent->firstChild == NULL)
1115         parent->firstChild = newItem;
1116 }
1117
1118 static BOOL
1119 TREEVIEW_DoSetItemT(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
1120                    const TVITEMEXW *tvItem, BOOL isW)
1121 {
1122     UINT callbackClear = 0;
1123     UINT callbackSet = 0;
1124
1125     TRACE("item %p\n", wineItem);
1126     /* Do this first in case it fails. */
1127     if (tvItem->mask & TVIF_TEXT)
1128     {
1129         wineItem->textWidth = 0; /* force width recalculation */
1130         if (tvItem->pszText != LPSTR_TEXTCALLBACKW) /* covers != TEXTCALLBACKA too */
1131         {
1132             int len;
1133             LPWSTR newText;
1134             if (isW)
1135                 len = lstrlenW(tvItem->pszText) + 1;
1136             else
1137                 len = MultiByteToWideChar(CP_ACP, 0, (LPSTR)tvItem->pszText, -1, NULL, 0);
1138
1139             newText  = ReAlloc(wineItem->pszText, len * sizeof(WCHAR));
1140
1141             if (newText == NULL) return FALSE;
1142
1143             callbackClear |= TVIF_TEXT;
1144
1145             wineItem->pszText = newText;
1146             wineItem->cchTextMax = len;
1147             if (isW)
1148                 lstrcpynW(wineItem->pszText, tvItem->pszText, len);
1149             else
1150                 MultiByteToWideChar(CP_ACP, 0, (LPSTR)tvItem->pszText, -1,
1151                                     wineItem->pszText, len);
1152
1153             TRACE("setting text %s, item %p\n", debugstr_w(wineItem->pszText), wineItem);
1154         }
1155         else
1156         {
1157             callbackSet |= TVIF_TEXT;
1158
1159             wineItem->pszText = ReAlloc(wineItem->pszText,
1160                                         TEXT_CALLBACK_SIZE * sizeof(WCHAR));
1161             wineItem->cchTextMax = TEXT_CALLBACK_SIZE;
1162             TRACE("setting callback, item %p\n", wineItem);
1163         }
1164     }
1165
1166     if (tvItem->mask & TVIF_CHILDREN)
1167     {
1168         wineItem->cChildren = tvItem->cChildren;
1169
1170         if (wineItem->cChildren == I_CHILDRENCALLBACK)
1171             callbackSet |= TVIF_CHILDREN;
1172         else
1173             callbackClear |= TVIF_CHILDREN;
1174     }
1175
1176     if (tvItem->mask & TVIF_IMAGE)
1177     {
1178         wineItem->iImage = tvItem->iImage;
1179
1180         if (wineItem->iImage == I_IMAGECALLBACK)
1181             callbackSet |= TVIF_IMAGE;
1182         else
1183             callbackClear |= TVIF_IMAGE;
1184     }
1185
1186     if (tvItem->mask & TVIF_SELECTEDIMAGE)
1187     {
1188         wineItem->iSelectedImage = tvItem->iSelectedImage;
1189
1190         if (wineItem->iSelectedImage == I_IMAGECALLBACK)
1191             callbackSet |= TVIF_SELECTEDIMAGE;
1192         else
1193             callbackClear |= TVIF_SELECTEDIMAGE;
1194     }
1195
1196     if (tvItem->mask & TVIF_PARAM)
1197         wineItem->lParam = tvItem->lParam;
1198
1199     /* If the application sets TVIF_INTEGRAL without
1200      * supplying a TVITEMEX structure, it's toast. */
1201     if (tvItem->mask & TVIF_INTEGRAL)
1202         wineItem->iIntegral = tvItem->iIntegral;
1203
1204     if (tvItem->mask & TVIF_STATE)
1205     {
1206         TRACE("prevstate,state,mask:%x,%x,%x\n", wineItem->state, tvItem->state,
1207               tvItem->stateMask);
1208         wineItem->state &= ~tvItem->stateMask;
1209         wineItem->state |= (tvItem->state & tvItem->stateMask);
1210     }
1211
1212     wineItem->callbackMask |= callbackSet;
1213     wineItem->callbackMask &= ~callbackClear;
1214
1215     return TRUE;
1216 }
1217
1218 /* Note that the new item is pre-zeroed. */
1219 static LRESULT
1220 TREEVIEW_InsertItemT(TREEVIEW_INFO *infoPtr, const TVINSERTSTRUCTW *ptdi, BOOL isW)
1221 {
1222     const TVITEMEXW *tvItem = &ptdi->u.itemex;
1223     HTREEITEM insertAfter;
1224     TREEVIEW_ITEM *newItem, *parentItem;
1225     BOOL bTextUpdated = FALSE;
1226
1227     if (ptdi->hParent == TVI_ROOT || ptdi->hParent == 0)
1228     {
1229         parentItem = infoPtr->root;
1230     }
1231     else
1232     {
1233         parentItem = ptdi->hParent;
1234
1235         if (!TREEVIEW_ValidItem(infoPtr, parentItem))
1236         {
1237             WARN("invalid parent %p\n", parentItem);
1238             return (LRESULT)(HTREEITEM)NULL;
1239         }
1240     }
1241
1242     insertAfter = ptdi->hInsertAfter;
1243
1244     /* Validate this now for convenience. */
1245     switch ((DWORD_PTR)insertAfter)
1246     {
1247     case (DWORD_PTR)TVI_FIRST:
1248     case (DWORD_PTR)TVI_LAST:
1249     case (DWORD_PTR)TVI_SORT:
1250         break;
1251
1252     default:
1253         if (!TREEVIEW_ValidItem(infoPtr, insertAfter) ||
1254             insertAfter->parent != parentItem)
1255         {
1256             WARN("invalid insert after %p\n", insertAfter);
1257             insertAfter = TVI_LAST;
1258         }
1259     }
1260
1261     TRACE("parent %p position %p: %s\n", parentItem, insertAfter,
1262           (tvItem->mask & TVIF_TEXT)
1263           ? ((tvItem->pszText == LPSTR_TEXTCALLBACKW) ? "<callback>"
1264              : (isW ? debugstr_w(tvItem->pszText) : debugstr_a((LPSTR)tvItem->pszText)))
1265           : "<no label>");
1266
1267     newItem = TREEVIEW_AllocateItem(infoPtr);
1268     if (newItem == NULL)
1269         return (LRESULT)(HTREEITEM)NULL;
1270
1271     newItem->parent = parentItem;
1272     newItem->iIntegral = 1;
1273
1274     if (!TREEVIEW_DoSetItemT(infoPtr, newItem, tvItem, isW))
1275         return (LRESULT)(HTREEITEM)NULL;
1276
1277     /* After this point, nothing can fail. (Except for TVI_SORT.) */
1278
1279     infoPtr->uNumItems++;
1280
1281     switch ((DWORD_PTR)insertAfter)
1282     {
1283     case (DWORD_PTR)TVI_FIRST:
1284         {
1285            TREEVIEW_ITEM *originalFirst = parentItem->firstChild;
1286            TREEVIEW_InsertBefore(newItem, parentItem->firstChild, parentItem);
1287            if (infoPtr->firstVisible == originalFirst)
1288               TREEVIEW_SetFirstVisible(infoPtr, newItem, TRUE);
1289         }
1290         break;
1291
1292     case (DWORD_PTR)TVI_LAST:
1293         TREEVIEW_InsertAfter(newItem, parentItem->lastChild, parentItem);
1294         break;
1295
1296         /* hInsertAfter names a specific item we want to insert after */
1297     default:
1298         TREEVIEW_InsertAfter(newItem, insertAfter, insertAfter->parent);
1299         break;
1300
1301     case (DWORD_PTR)TVI_SORT:
1302         {
1303             TREEVIEW_ITEM *aChild;
1304             TREEVIEW_ITEM *previousChild = NULL;
1305             TREEVIEW_ITEM *originalFirst = parentItem->firstChild;
1306             BOOL bItemInserted = FALSE;
1307
1308             aChild = parentItem->firstChild;
1309
1310             bTextUpdated = TRUE;
1311             TREEVIEW_UpdateDispInfo(infoPtr, newItem, TVIF_TEXT);
1312
1313             /* Iterate the parent children to see where we fit in */
1314             while (aChild != NULL)
1315             {
1316                 INT comp;
1317
1318                 TREEVIEW_UpdateDispInfo(infoPtr, aChild, TVIF_TEXT);
1319                 comp = lstrcmpW(newItem->pszText, aChild->pszText);
1320
1321                 if (comp < 0)   /* we are smaller than the current one */
1322                 {
1323                     TREEVIEW_InsertBefore(newItem, aChild, parentItem);
1324                     if (infoPtr->firstVisible == originalFirst &&
1325                         aChild == originalFirst)
1326                         TREEVIEW_SetFirstVisible(infoPtr, newItem, TRUE);
1327                     bItemInserted = TRUE;
1328                     break;
1329                 }
1330                 else if (comp > 0)      /* we are bigger than the current one */
1331                 {
1332                     previousChild = aChild;
1333
1334                     /* This will help us to exit if there is no more sibling */
1335                     aChild = (aChild->nextSibling == 0)
1336                         ? NULL
1337                         : aChild->nextSibling;
1338
1339                     /* Look at the next item */
1340                     continue;
1341                 }
1342                 else if (comp == 0)
1343                 {
1344                     /*
1345                      * An item with this name is already existing, therefore,
1346                      * we add after the one we found
1347                      */
1348                     TREEVIEW_InsertAfter(newItem, aChild, parentItem);
1349                     bItemInserted = TRUE;
1350                     break;
1351                 }
1352             }
1353
1354             /*
1355              * we reach the end of the child list and the item has not
1356              * yet been inserted, therefore, insert it after the last child.
1357              */
1358             if ((!bItemInserted) && (aChild == NULL))
1359                 TREEVIEW_InsertAfter(newItem, previousChild, parentItem);
1360
1361             break;
1362         }
1363     }
1364
1365
1366     TRACE("new item %p; parent %p, mask %x\n", newItem,
1367           newItem->parent, tvItem->mask);
1368
1369     newItem->iLevel = newItem->parent->iLevel + 1;
1370
1371     if (newItem->parent->cChildren == 0)
1372         newItem->parent->cChildren = 1;
1373
1374     if (infoPtr->dwStyle & TVS_CHECKBOXES)
1375     {
1376         if (STATEIMAGEINDEX(newItem->state) == 0)
1377             newItem->state |= INDEXTOSTATEIMAGEMASK(1);
1378     }
1379
1380     if (infoPtr->firstVisible == NULL)
1381         infoPtr->firstVisible = newItem;
1382
1383     TREEVIEW_VerifyTree(infoPtr);
1384
1385     if (parentItem == infoPtr->root ||
1386         (ISVISIBLE(parentItem) && parentItem->state & TVIS_EXPANDED))
1387     {
1388        TREEVIEW_ITEM *item;
1389        TREEVIEW_ITEM *prev = TREEVIEW_GetPrevListItem(infoPtr, newItem);
1390
1391        TREEVIEW_RecalculateVisibleOrder(infoPtr, prev);
1392        TREEVIEW_ComputeItemInternalMetrics(infoPtr, newItem);
1393
1394        if (!bTextUpdated)
1395           TREEVIEW_UpdateDispInfo(infoPtr, newItem, TVIF_TEXT);
1396
1397        TREEVIEW_ComputeTextWidth(infoPtr, newItem, 0);
1398        TREEVIEW_UpdateScrollBars(infoPtr);
1399     /*
1400      * if the item was inserted in a visible part of the tree,
1401      * invalidate it, as well as those after it
1402      */
1403        for (item = newItem;
1404             item != NULL;
1405             item = TREEVIEW_GetNextListItem(infoPtr, item))
1406           TREEVIEW_Invalidate(infoPtr, item);
1407     }
1408     else
1409     {
1410        newItem->visibleOrder = -1;
1411
1412        /* refresh treeview if newItem is the first item inserted under parentItem */
1413        if (ISVISIBLE(parentItem) && newItem->prevSibling == newItem->nextSibling)
1414        {
1415           /* parent got '+' - update it */
1416           TREEVIEW_Invalidate(infoPtr, parentItem);
1417        }
1418     }
1419
1420     return (LRESULT)newItem;
1421 }
1422
1423 /* Item Deletion ************************************************************/
1424 static void
1425 TREEVIEW_RemoveItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem);
1426
1427 static void
1428 TREEVIEW_RemoveAllChildren(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *parentItem)
1429 {
1430     TREEVIEW_ITEM *kill = parentItem->firstChild;
1431
1432     while (kill != NULL)
1433     {
1434         TREEVIEW_ITEM *next = kill->nextSibling;
1435
1436         TREEVIEW_RemoveItem(infoPtr, kill);
1437
1438         kill = next;
1439     }
1440
1441     assert(parentItem->cChildren <= 0); /* I_CHILDRENCALLBACK or 0 */
1442     assert(parentItem->firstChild == NULL);
1443     assert(parentItem->lastChild == NULL);
1444 }
1445
1446 static void
1447 TREEVIEW_UnlinkItem(TREEVIEW_ITEM *item)
1448 {
1449     TREEVIEW_ITEM *parentItem = item->parent;
1450
1451     assert(item != NULL);
1452     assert(item->parent != NULL); /* i.e. it must not be the root */
1453
1454     if (parentItem->firstChild == item)
1455         parentItem->firstChild = item->nextSibling;
1456
1457     if (parentItem->lastChild == item)
1458         parentItem->lastChild = item->prevSibling;
1459
1460     if (parentItem->firstChild == NULL && parentItem->lastChild == NULL
1461         && parentItem->cChildren > 0)
1462         parentItem->cChildren = 0;
1463
1464     if (item->prevSibling)
1465         item->prevSibling->nextSibling = item->nextSibling;
1466
1467     if (item->nextSibling)
1468         item->nextSibling->prevSibling = item->prevSibling;
1469 }
1470
1471 static void
1472 TREEVIEW_RemoveItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem)
1473 {
1474     TRACE("%p, (%s)\n", wineItem, TREEVIEW_ItemName(wineItem));
1475
1476     TREEVIEW_SendTreeviewNotify(infoPtr, TVN_DELETEITEMW, TVC_UNKNOWN,
1477                                 TVIF_HANDLE | TVIF_PARAM, wineItem, 0);
1478
1479     if (wineItem->firstChild)
1480         TREEVIEW_RemoveAllChildren(infoPtr, wineItem);
1481
1482     TREEVIEW_UnlinkItem(wineItem);
1483
1484     infoPtr->uNumItems--;
1485
1486     if (wineItem->pszText != LPSTR_TEXTCALLBACKW)
1487         Free(wineItem->pszText);
1488
1489     TREEVIEW_FreeItem(infoPtr, wineItem);
1490 }
1491
1492
1493 /* Empty out the tree. */
1494 static void
1495 TREEVIEW_RemoveTree(TREEVIEW_INFO *infoPtr)
1496 {
1497     TREEVIEW_RemoveAllChildren(infoPtr, infoPtr->root);
1498
1499     assert(infoPtr->uNumItems == 0);    /* root isn't counted in uNumItems */
1500 }
1501
1502 static LRESULT
1503 TREEVIEW_DeleteItem(TREEVIEW_INFO *infoPtr, HTREEITEM wineItem)
1504 {
1505     TREEVIEW_ITEM *newSelection = NULL;
1506     TREEVIEW_ITEM *newFirstVisible = NULL;
1507     TREEVIEW_ITEM *parent, *prev = NULL;
1508     BOOL visible = FALSE;
1509
1510     if (wineItem == TVI_ROOT)
1511     {
1512         TRACE("TVI_ROOT\n");
1513         parent = infoPtr->root;
1514         newSelection = NULL;
1515         visible = TRUE;
1516         TREEVIEW_RemoveTree(infoPtr);
1517     }
1518     else
1519     {
1520         if (!TREEVIEW_ValidItem(infoPtr, wineItem))
1521             return FALSE;
1522
1523         TRACE("%p (%s)\n", wineItem, TREEVIEW_ItemName(wineItem));
1524         parent = wineItem->parent;
1525
1526         if (ISVISIBLE(wineItem))
1527         {
1528             prev = TREEVIEW_GetPrevListItem(infoPtr, wineItem);
1529             visible = TRUE;
1530         }
1531
1532         if (infoPtr->selectedItem != NULL
1533             && (wineItem == infoPtr->selectedItem
1534                 || TREEVIEW_IsChildOf(wineItem, infoPtr->selectedItem)))
1535         {
1536             if (wineItem->nextSibling)
1537                 newSelection = wineItem->nextSibling;
1538             else if (wineItem->parent != infoPtr->root)
1539                 newSelection = wineItem->parent;
1540             else
1541                 newSelection = wineItem->prevSibling;
1542             TRACE("newSelection = %p\n", newSelection);
1543         }
1544
1545         if (infoPtr->firstVisible == wineItem)
1546         {
1547             if (wineItem->nextSibling)
1548                newFirstVisible = wineItem->nextSibling;
1549             else if (wineItem->prevSibling)
1550                newFirstVisible = wineItem->prevSibling;
1551             else if (wineItem->parent != infoPtr->root)
1552                newFirstVisible = wineItem->parent;
1553                TREEVIEW_SetFirstVisible(infoPtr, NULL, TRUE);
1554         }
1555         else
1556             newFirstVisible = infoPtr->firstVisible;
1557
1558         TREEVIEW_RemoveItem(infoPtr, wineItem);
1559     }
1560
1561     /* Don't change if somebody else already has (infoPtr->selectedItem is cleared by FreeItem). */
1562     if (!infoPtr->selectedItem && newSelection)
1563     {
1564         if (TREEVIEW_ValidItem(infoPtr, newSelection))
1565             TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, newSelection, TVC_UNKNOWN);
1566     }
1567
1568     /* Validate insertMark dropItem.
1569      * hotItem ??? - used for comparison only.
1570      */
1571     if (!TREEVIEW_ValidItem(infoPtr, infoPtr->insertMarkItem))
1572         infoPtr->insertMarkItem = 0;
1573
1574     if (!TREEVIEW_ValidItem(infoPtr, infoPtr->dropItem))
1575         infoPtr->dropItem = 0;
1576
1577     if (!TREEVIEW_ValidItem(infoPtr, newFirstVisible))
1578         newFirstVisible = infoPtr->root->firstChild;
1579
1580     TREEVIEW_VerifyTree(infoPtr);
1581
1582
1583     if (visible)
1584     {
1585        TREEVIEW_SetFirstVisible(infoPtr, newFirstVisible, TRUE);
1586        TREEVIEW_RecalculateVisibleOrder(infoPtr, prev);
1587        TREEVIEW_UpdateScrollBars(infoPtr);
1588        TREEVIEW_Invalidate(infoPtr, NULL);
1589     }
1590     else if (ISVISIBLE(parent) && !TREEVIEW_HasChildren(infoPtr, parent))
1591     {
1592        /* parent lost '+/-' - update it */
1593        TREEVIEW_Invalidate(infoPtr, parent);
1594     }
1595
1596     return TRUE;
1597 }
1598
1599
1600 /* Get/Set Messages *********************************************************/
1601 static LRESULT
1602 TREEVIEW_SetRedraw(TREEVIEW_INFO* infoPtr, WPARAM wParam, LPARAM lParam)
1603 {
1604   if(wParam)
1605     infoPtr->bRedraw = TRUE;
1606   else
1607     infoPtr->bRedraw = FALSE;
1608
1609   return 0;
1610 }
1611
1612 static LRESULT
1613 TREEVIEW_GetIndent(TREEVIEW_INFO *infoPtr)
1614 {
1615     TRACE("\n");
1616     return infoPtr->uIndent;
1617 }
1618
1619 static LRESULT
1620 TREEVIEW_SetIndent(TREEVIEW_INFO *infoPtr, UINT newIndent)
1621 {
1622     TRACE("\n");
1623
1624     if (newIndent < MINIMUM_INDENT)
1625         newIndent = MINIMUM_INDENT;
1626
1627     if (infoPtr->uIndent != newIndent)
1628     {
1629         infoPtr->uIndent = newIndent;
1630         TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
1631         TREEVIEW_UpdateScrollBars(infoPtr);
1632         TREEVIEW_Invalidate(infoPtr, NULL);
1633     }
1634
1635     return 0;
1636 }
1637
1638
1639 static LRESULT
1640 TREEVIEW_GetToolTips(TREEVIEW_INFO *infoPtr)
1641 {
1642     TRACE("\n");
1643     return (LRESULT)infoPtr->hwndToolTip;
1644 }
1645
1646 static LRESULT
1647 TREEVIEW_SetToolTips(TREEVIEW_INFO *infoPtr, HWND hwndTT)
1648 {
1649     HWND prevToolTip;
1650
1651     TRACE("\n");
1652     prevToolTip = infoPtr->hwndToolTip;
1653     infoPtr->hwndToolTip = hwndTT;
1654
1655     return (LRESULT)prevToolTip;
1656 }
1657
1658 static LRESULT
1659 TREEVIEW_SetUnicodeFormat(TREEVIEW_INFO *infoPtr, BOOL fUnicode)
1660 {
1661     BOOL rc = infoPtr->bNtfUnicode;
1662     infoPtr->bNtfUnicode = fUnicode;
1663     return rc;
1664 }
1665
1666 static LRESULT
1667 TREEVIEW_GetUnicodeFormat(TREEVIEW_INFO *infoPtr)
1668 {
1669      return infoPtr->bNtfUnicode;
1670 }
1671
1672 static LRESULT
1673 TREEVIEW_GetScrollTime(TREEVIEW_INFO *infoPtr)
1674 {
1675     return infoPtr->uScrollTime;
1676 }
1677
1678 static LRESULT
1679 TREEVIEW_SetScrollTime(TREEVIEW_INFO *infoPtr, UINT uScrollTime)
1680 {
1681     UINT uOldScrollTime = infoPtr->uScrollTime;
1682
1683     infoPtr->uScrollTime = min(uScrollTime, 100);
1684
1685     return uOldScrollTime;
1686 }
1687
1688
1689 static LRESULT
1690 TREEVIEW_GetImageList(TREEVIEW_INFO *infoPtr, WPARAM wParam)
1691 {
1692     TRACE("\n");
1693
1694     switch (wParam)
1695     {
1696     case (WPARAM)TVSIL_NORMAL:
1697         return (LRESULT)infoPtr->himlNormal;
1698
1699     case (WPARAM)TVSIL_STATE:
1700         return (LRESULT)infoPtr->himlState;
1701
1702     default:
1703         return 0;
1704     }
1705 }
1706
1707 #define TVHEIGHT_MIN         16
1708 #define TVHEIGHT_FONT_ADJUST 3 /* 2 for focus border + 1 for margin some apps assume */
1709
1710 /* Compute the natural height for items. */
1711 static UINT
1712 TREEVIEW_NaturalHeight(TREEVIEW_INFO *infoPtr)
1713 {
1714     TEXTMETRICW tm;
1715     HDC hdc = GetDC(0);
1716     HFONT hOldFont = SelectObject(hdc, infoPtr->hFont);
1717     UINT height;
1718
1719     /* Height is the maximum of:
1720      * 16 (a hack because our fonts are tiny), and
1721      * The text height + border & margin, and
1722      * The size of the normal image list
1723      */
1724     GetTextMetricsW(hdc, &tm);
1725     SelectObject(hdc, hOldFont);
1726     ReleaseDC(0, hdc);
1727
1728     height = TVHEIGHT_MIN;
1729     if (height < tm.tmHeight + tm.tmExternalLeading + TVHEIGHT_FONT_ADJUST)
1730         height = tm.tmHeight + tm.tmExternalLeading + TVHEIGHT_FONT_ADJUST;
1731     if (height < infoPtr->normalImageHeight)
1732         height = infoPtr->normalImageHeight;
1733     return height;
1734 }
1735
1736 static LRESULT
1737 TREEVIEW_SetImageList(TREEVIEW_INFO *infoPtr, WPARAM wParam, HIMAGELIST himlNew)
1738 {
1739     HIMAGELIST himlOld = 0;
1740     int oldWidth  = infoPtr->normalImageWidth;
1741     int oldHeight = infoPtr->normalImageHeight;
1742
1743
1744     TRACE("%x,%p\n", wParam, himlNew);
1745
1746     switch (wParam)
1747     {
1748     case (WPARAM)TVSIL_NORMAL:
1749         himlOld = infoPtr->himlNormal;
1750         infoPtr->himlNormal = himlNew;
1751
1752         if (himlNew != NULL)
1753             ImageList_GetIconSize(himlNew, &infoPtr->normalImageWidth,
1754                                   &infoPtr->normalImageHeight);
1755         else
1756         {
1757             infoPtr->normalImageWidth = 0;
1758             infoPtr->normalImageHeight = 0;
1759         }
1760
1761         break;
1762
1763     case (WPARAM)TVSIL_STATE:
1764         himlOld = infoPtr->himlState;
1765         infoPtr->himlState = himlNew;
1766
1767         if (himlNew != NULL)
1768             ImageList_GetIconSize(himlNew, &infoPtr->stateImageWidth,
1769                                   &infoPtr->stateImageHeight);
1770         else
1771         {
1772             infoPtr->stateImageWidth = 0;
1773             infoPtr->stateImageHeight = 0;
1774         }
1775
1776         break;
1777     }
1778
1779     if (oldWidth != infoPtr->normalImageWidth ||
1780         oldHeight != infoPtr->normalImageHeight)
1781     {
1782         BOOL bRecalcVisible = FALSE;
1783
1784         if (oldHeight != infoPtr->normalImageHeight &&
1785             !infoPtr->bHeightSet)
1786         {
1787             infoPtr->uItemHeight = TREEVIEW_NaturalHeight(infoPtr);
1788             bRecalcVisible = TRUE;
1789         }
1790
1791         if (infoPtr->normalImageWidth > MINIMUM_INDENT &&
1792             infoPtr->normalImageWidth != infoPtr->uIndent)
1793         {
1794             infoPtr->uIndent = infoPtr->normalImageWidth;
1795             bRecalcVisible = TRUE;
1796         }
1797
1798         if (bRecalcVisible)
1799             TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
1800
1801        TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
1802        TREEVIEW_UpdateScrollBars(infoPtr);
1803     }
1804
1805     TREEVIEW_Invalidate(infoPtr, NULL);
1806
1807     return (LRESULT)himlOld;
1808 }
1809
1810 static LRESULT
1811 TREEVIEW_SetItemHeight(TREEVIEW_INFO *infoPtr, INT newHeight)
1812 {
1813     INT prevHeight = infoPtr->uItemHeight;
1814
1815     TRACE("%d\n", newHeight);
1816     if (newHeight == -1)
1817     {
1818         infoPtr->uItemHeight = TREEVIEW_NaturalHeight(infoPtr);
1819         infoPtr->bHeightSet = FALSE;
1820     }
1821     else
1822     {
1823         infoPtr->uItemHeight = newHeight;
1824         infoPtr->bHeightSet = TRUE;
1825     }
1826
1827     /* Round down, unless we support odd ("non even") heights. */
1828     if (!(infoPtr->dwStyle) & TVS_NONEVENHEIGHT)
1829         infoPtr->uItemHeight &= ~1;
1830
1831     if (infoPtr->uItemHeight != prevHeight)
1832     {
1833         TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
1834         TREEVIEW_UpdateScrollBars(infoPtr);
1835         TREEVIEW_Invalidate(infoPtr, NULL);
1836     }
1837
1838     return prevHeight;
1839 }
1840
1841 static LRESULT
1842 TREEVIEW_GetItemHeight(TREEVIEW_INFO *infoPtr)
1843 {
1844     TRACE("\n");
1845     return infoPtr->uItemHeight;
1846 }
1847
1848
1849 static LRESULT
1850 TREEVIEW_GetFont(TREEVIEW_INFO *infoPtr)
1851 {
1852     TRACE("%p\n", infoPtr->hFont);
1853     return (LRESULT)infoPtr->hFont;
1854 }
1855
1856
1857 static INT CALLBACK
1858 TREEVIEW_ResetTextWidth(LPVOID pItem, LPVOID unused)
1859 {
1860     (void)unused;
1861
1862     ((TREEVIEW_ITEM *)pItem)->textWidth = 0;
1863
1864     return 1;
1865 }
1866
1867 static LRESULT
1868 TREEVIEW_SetFont(TREEVIEW_INFO *infoPtr, HFONT hFont, BOOL bRedraw)
1869 {
1870     UINT uHeight = infoPtr->uItemHeight;
1871
1872     TRACE("%p %i\n", hFont, bRedraw);
1873
1874     infoPtr->hFont = hFont ? hFont : infoPtr->hDefaultFont;
1875
1876     DeleteObject(infoPtr->hBoldFont);
1877     infoPtr->hBoldFont = TREEVIEW_CreateBoldFont(infoPtr->hFont);
1878     infoPtr->hUnderlineFont = TREEVIEW_CreateUnderlineFont(infoPtr->hFont);
1879
1880     if (!infoPtr->bHeightSet)
1881         infoPtr->uItemHeight = TREEVIEW_NaturalHeight(infoPtr);
1882
1883     if (uHeight != infoPtr->uItemHeight)
1884        TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
1885
1886     DPA_EnumCallback(infoPtr->items, TREEVIEW_ResetTextWidth, 0);
1887
1888     TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
1889     TREEVIEW_UpdateScrollBars(infoPtr);
1890
1891     if (bRedraw)
1892         TREEVIEW_Invalidate(infoPtr, NULL);
1893
1894     return 0;
1895 }
1896
1897
1898 static LRESULT
1899 TREEVIEW_GetLineColor(TREEVIEW_INFO *infoPtr)
1900 {
1901     TRACE("\n");
1902     return (LRESULT)infoPtr->clrLine;
1903 }
1904
1905 static LRESULT
1906 TREEVIEW_SetLineColor(TREEVIEW_INFO *infoPtr, COLORREF color)
1907 {
1908     COLORREF prevColor = infoPtr->clrLine;
1909
1910     TRACE("\n");
1911     infoPtr->clrLine = color;
1912     return (LRESULT)prevColor;
1913 }
1914
1915
1916 static LRESULT
1917 TREEVIEW_GetTextColor(TREEVIEW_INFO *infoPtr)
1918 {
1919     TRACE("\n");
1920     return (LRESULT)infoPtr->clrText;
1921 }
1922
1923 static LRESULT
1924 TREEVIEW_SetTextColor(TREEVIEW_INFO *infoPtr, COLORREF color)
1925 {
1926     COLORREF prevColor = infoPtr->clrText;
1927
1928     TRACE("\n");
1929     infoPtr->clrText = color;
1930
1931     if (infoPtr->clrText != prevColor)
1932         TREEVIEW_Invalidate(infoPtr, NULL);
1933
1934     return (LRESULT)prevColor;
1935 }
1936
1937
1938 static LRESULT
1939 TREEVIEW_GetBkColor(TREEVIEW_INFO *infoPtr)
1940 {
1941     TRACE("\n");
1942     return (LRESULT)infoPtr->clrBk;
1943 }
1944
1945 static LRESULT
1946 TREEVIEW_SetBkColor(TREEVIEW_INFO *infoPtr, COLORREF newColor)
1947 {
1948     COLORREF prevColor = infoPtr->clrBk;
1949
1950     TRACE("\n");
1951     infoPtr->clrBk = newColor;
1952
1953     if (newColor != prevColor)
1954         TREEVIEW_Invalidate(infoPtr, NULL);
1955
1956     return (LRESULT)prevColor;
1957 }
1958
1959
1960 static LRESULT
1961 TREEVIEW_GetInsertMarkColor(TREEVIEW_INFO *infoPtr)
1962 {
1963     TRACE("\n");
1964     return (LRESULT)infoPtr->clrInsertMark;
1965 }
1966
1967 static LRESULT
1968 TREEVIEW_SetInsertMarkColor(TREEVIEW_INFO *infoPtr, COLORREF color)
1969 {
1970     COLORREF prevColor = infoPtr->clrInsertMark;
1971
1972     TRACE("%x\n", color);
1973     infoPtr->clrInsertMark = color;
1974
1975     return (LRESULT)prevColor;
1976 }
1977
1978
1979 static LRESULT
1980 TREEVIEW_SetInsertMark(TREEVIEW_INFO *infoPtr, BOOL wParam, HTREEITEM item)
1981 {
1982     TRACE("%d %p\n", wParam, item);
1983
1984     if (!TREEVIEW_ValidItem(infoPtr, item))
1985         return 0;
1986
1987     infoPtr->insertBeforeorAfter = wParam;
1988     infoPtr->insertMarkItem = item;
1989
1990     TREEVIEW_Invalidate(infoPtr, NULL);
1991
1992     return 1;
1993 }
1994
1995
1996 /************************************************************************
1997  * Some serious braindamage here. lParam is a pointer to both the
1998  * input HTREEITEM and the output RECT.
1999  */
2000 static LRESULT
2001 TREEVIEW_GetItemRect(TREEVIEW_INFO *infoPtr, BOOL fTextRect, LPRECT lpRect)
2002 {
2003     TREEVIEW_ITEM *wineItem;
2004     const HTREEITEM *pItem = (HTREEITEM *)lpRect;
2005
2006     TRACE("\n");
2007     /*
2008      * validate parameters
2009      */
2010     if (pItem == NULL)
2011         return FALSE;
2012
2013     wineItem = *pItem;
2014     if (!TREEVIEW_ValidItem(infoPtr, wineItem) || !ISVISIBLE(wineItem))
2015         return FALSE;
2016
2017     /*
2018      * If wParam is TRUE return the text size otherwise return
2019      * the whole item size
2020      */
2021     if (fTextRect)
2022     {
2023         /* Windows does not send TVN_GETDISPINFO here. */
2024
2025         lpRect->top = wineItem->rect.top;
2026         lpRect->bottom = wineItem->rect.bottom;
2027
2028         lpRect->left = wineItem->textOffset;
2029         lpRect->right = wineItem->textOffset + wineItem->textWidth;
2030     }
2031     else
2032     {
2033         *lpRect = wineItem->rect;
2034     }
2035
2036     TRACE("%s [L:%d R:%d T:%d B:%d]\n", fTextRect ? "text" : "item",
2037           lpRect->left, lpRect->right, lpRect->top, lpRect->bottom);
2038
2039     return TRUE;
2040 }
2041
2042 static inline LRESULT
2043 TREEVIEW_GetVisibleCount(TREEVIEW_INFO *infoPtr)
2044 {
2045     /* Suprise! This does not take integral height into account. */
2046     return infoPtr->clientHeight / infoPtr->uItemHeight;
2047 }
2048
2049
2050 static LRESULT
2051 TREEVIEW_GetItemT(TREEVIEW_INFO *infoPtr, LPTVITEMEXW tvItem, BOOL isW)
2052 {
2053     TREEVIEW_ITEM *wineItem;
2054
2055     wineItem = tvItem->hItem;
2056     if (!TREEVIEW_ValidItem(infoPtr, wineItem))
2057         return FALSE;
2058
2059     TREEVIEW_UpdateDispInfo(infoPtr, wineItem, tvItem->mask);
2060
2061     if (tvItem->mask & TVIF_CHILDREN)
2062     {
2063         if (wineItem->cChildren==I_CHILDRENCALLBACK)
2064             FIXME("I_CHILDRENCALLBACK not supported\n");
2065         tvItem->cChildren = wineItem->cChildren;
2066     }
2067
2068     if (tvItem->mask & TVIF_HANDLE)
2069         tvItem->hItem = wineItem;
2070
2071     if (tvItem->mask & TVIF_IMAGE)
2072         tvItem->iImage = wineItem->iImage;
2073
2074     if (tvItem->mask & TVIF_INTEGRAL)
2075         tvItem->iIntegral = wineItem->iIntegral;
2076
2077     /* undocumented: windows ignores TVIF_PARAM and
2078      * * always sets lParam
2079      */
2080     tvItem->lParam = wineItem->lParam;
2081
2082     if (tvItem->mask & TVIF_SELECTEDIMAGE)
2083         tvItem->iSelectedImage = wineItem->iSelectedImage;
2084
2085     if (tvItem->mask & TVIF_STATE)
2086         /* Careful here - Windows ignores the stateMask when you get the state
2087             That contradicts the documentation, but makes more common sense, masking
2088             retrieval in this way seems overkill */
2089         tvItem->state = wineItem->state;
2090
2091     if (tvItem->mask & TVIF_TEXT)
2092     {
2093         if (isW)
2094         {
2095             if (wineItem->pszText == LPSTR_TEXTCALLBACKW)
2096             {
2097                 tvItem->pszText = LPSTR_TEXTCALLBACKW;
2098                 FIXME(" GetItem called with LPSTR_TEXTCALLBACK\n");
2099             }
2100             else
2101             {
2102                 lstrcpynW(tvItem->pszText, wineItem->pszText, tvItem->cchTextMax);
2103             }
2104         }
2105         else
2106         {
2107             if (wineItem->pszText == LPSTR_TEXTCALLBACKW)
2108             {
2109                 tvItem->pszText = (LPWSTR)LPSTR_TEXTCALLBACKA;
2110                 FIXME(" GetItem called with LPSTR_TEXTCALLBACK\n");
2111             }
2112             else
2113             {
2114                 WideCharToMultiByte(CP_ACP, 0, wineItem->pszText, -1,
2115                                     (LPSTR)tvItem->pszText, tvItem->cchTextMax, NULL, NULL);
2116             }
2117         }
2118     }
2119     TRACE("item <%p>, txt %p, img %p, mask %x\n",
2120           wineItem, tvItem->pszText, &tvItem->iImage, tvItem->mask);
2121
2122     return TRUE;
2123 }
2124
2125 /* Beware MSDN Library Visual Studio 6.0. It says -1 on failure, 0 on success,
2126  * which is wrong. */
2127 static LRESULT
2128 TREEVIEW_SetItemT(TREEVIEW_INFO *infoPtr, LPTVITEMEXW tvItem, BOOL isW)
2129 {
2130     TREEVIEW_ITEM *wineItem;
2131     TREEVIEW_ITEM originalItem;
2132
2133     wineItem = tvItem->hItem;
2134
2135     TRACE("item %d,mask %x\n", TREEVIEW_GetItemIndex(infoPtr, wineItem),
2136           tvItem->mask);
2137
2138     if (!TREEVIEW_ValidItem(infoPtr, wineItem))
2139         return FALSE;
2140
2141     /* store the orignal item values */
2142     originalItem = *wineItem;
2143
2144     if (!TREEVIEW_DoSetItemT(infoPtr, wineItem, tvItem, isW))
2145         return FALSE;
2146
2147     /* If the text or TVIS_BOLD was changed, and it is visible, recalculate. */
2148     if ((tvItem->mask & TVIF_TEXT
2149          || (tvItem->mask & TVIF_STATE && tvItem->stateMask & TVIS_BOLD))
2150         && ISVISIBLE(wineItem))
2151     {
2152         TREEVIEW_UpdateDispInfo(infoPtr, wineItem, TVIF_TEXT);
2153         TREEVIEW_ComputeTextWidth(infoPtr, wineItem, 0);
2154     }
2155
2156     if (tvItem->mask != 0 && ISVISIBLE(wineItem))
2157     {
2158         /* The refresh updates everything, but we can't wait until then. */
2159         TREEVIEW_ComputeItemInternalMetrics(infoPtr, wineItem);
2160
2161         /* if any of the item's values changed and it's not a callback, redraw the item */
2162         if (item_changed(&originalItem, wineItem, tvItem))
2163         {
2164             if (tvItem->mask & TVIF_INTEGRAL)
2165             {
2166                 TREEVIEW_RecalculateVisibleOrder(infoPtr, wineItem);
2167                 TREEVIEW_UpdateScrollBars(infoPtr);
2168
2169                 TREEVIEW_Invalidate(infoPtr, NULL);
2170             }
2171             else
2172             {
2173                 TREEVIEW_UpdateScrollBars(infoPtr);
2174                 TREEVIEW_Invalidate(infoPtr, wineItem);
2175             }
2176         }
2177     }
2178
2179     return TRUE;
2180 }
2181
2182 static LRESULT
2183 TREEVIEW_GetItemState(TREEVIEW_INFO *infoPtr, HTREEITEM wineItem, UINT mask)
2184 {
2185     TRACE("\n");
2186
2187     if (!wineItem || !TREEVIEW_ValidItem(infoPtr, wineItem))
2188         return 0;
2189
2190     return (wineItem->state & mask);
2191 }
2192
2193 static LRESULT
2194 TREEVIEW_GetNextItem(TREEVIEW_INFO *infoPtr, UINT which, HTREEITEM wineItem)
2195 {
2196     TREEVIEW_ITEM *retval;
2197
2198     retval = 0;
2199
2200     /* handle all the global data here */
2201     switch (which)
2202     {
2203     case TVGN_CHILD:            /* Special case: child of 0 is root */
2204         if (wineItem)
2205             break;
2206         /* fall through */
2207     case TVGN_ROOT:
2208         retval = infoPtr->root->firstChild;
2209         break;
2210
2211     case TVGN_CARET:
2212         retval = infoPtr->selectedItem;
2213         break;
2214
2215     case TVGN_FIRSTVISIBLE:
2216         retval = infoPtr->firstVisible;
2217         break;
2218
2219     case TVGN_DROPHILITE:
2220         retval = infoPtr->dropItem;
2221         break;
2222
2223     case TVGN_LASTVISIBLE:
2224         retval = TREEVIEW_GetLastListItem(infoPtr, infoPtr->root);
2225         break;
2226     }
2227
2228     if (retval)
2229     {
2230         TRACE("flags:%x, returns %p\n", which, retval);
2231         return (LRESULT)retval;
2232     }
2233
2234     if (wineItem == TVI_ROOT) wineItem = infoPtr->root;
2235
2236     if (!TREEVIEW_ValidItem(infoPtr, wineItem))
2237         return FALSE;
2238
2239     switch (which)
2240     {
2241     case TVGN_NEXT:
2242         retval = wineItem->nextSibling;
2243         break;
2244     case TVGN_PREVIOUS:
2245         retval = wineItem->prevSibling;
2246         break;
2247     case TVGN_PARENT:
2248         retval = (wineItem->parent != infoPtr->root) ? wineItem->parent : NULL;
2249         break;
2250     case TVGN_CHILD:
2251         retval = wineItem->firstChild;
2252         break;
2253     case TVGN_NEXTVISIBLE:
2254         retval = TREEVIEW_GetNextListItem(infoPtr, wineItem);
2255         break;
2256     case TVGN_PREVIOUSVISIBLE:
2257         retval = TREEVIEW_GetPrevListItem(infoPtr, wineItem);
2258         break;
2259     default:
2260         TRACE("Unknown msg %x,item %p\n", which, wineItem);
2261         break;
2262     }
2263
2264     TRACE("flags:%x, item %p;returns %p\n", which, wineItem, retval);
2265     return (LRESULT)retval;
2266 }
2267
2268
2269 static LRESULT
2270 TREEVIEW_GetCount(TREEVIEW_INFO *infoPtr)
2271 {
2272     TRACE(" %d\n", infoPtr->uNumItems);
2273     return (LRESULT)infoPtr->uNumItems;
2274 }
2275
2276 static VOID
2277 TREEVIEW_ToggleItemState(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
2278 {
2279     if (infoPtr->dwStyle & TVS_CHECKBOXES)
2280     {
2281         static const unsigned int state_table[] = { 0, 2, 1 };
2282
2283         unsigned int state;
2284
2285         state = STATEIMAGEINDEX(item->state);
2286         TRACE("state:%x\n", state);
2287         item->state &= ~TVIS_STATEIMAGEMASK;
2288
2289         if (state < 3)
2290             state = state_table[state];
2291
2292         item->state |= INDEXTOSTATEIMAGEMASK(state);
2293
2294         TRACE("state:%x\n", state);
2295         TREEVIEW_Invalidate(infoPtr, item);
2296     }
2297 }
2298
2299
2300 /* Painting *************************************************************/
2301
2302 /* Draw the lines and expand button for an item. Also draws one section
2303  * of the line from item's parent to item's parent's next sibling. */
2304 static void
2305 TREEVIEW_DrawItemLines(TREEVIEW_INFO *infoPtr, HDC hdc, TREEVIEW_ITEM *item)
2306 {
2307     LONG centerx, centery;
2308     BOOL lar = ((infoPtr->dwStyle
2309                  & (TVS_LINESATROOT|TVS_HASLINES|TVS_HASBUTTONS))
2310                 > TVS_LINESATROOT);
2311     HBRUSH hbr, hbrOld;
2312
2313     if (!lar && item->iLevel == 0)
2314         return;
2315
2316     hbr    = CreateSolidBrush(infoPtr->clrBk);
2317     hbrOld = SelectObject(hdc, hbr);
2318
2319     centerx = (item->linesOffset + item->stateOffset) / 2;
2320     centery = (item->rect.top + item->rect.bottom) / 2;
2321
2322     if (infoPtr->dwStyle & TVS_HASLINES)
2323     {
2324         HPEN hOldPen, hNewPen;
2325         HTREEITEM parent;
2326         LOGBRUSH lb;
2327
2328         /*
2329          * Get a dotted grey pen
2330          */
2331         lb.lbStyle = BS_SOLID;
2332         lb.lbColor = infoPtr->clrLine;
2333         hNewPen = ExtCreatePen(PS_COSMETIC|PS_ALTERNATE, 1, &lb, 0, NULL);
2334         hOldPen = SelectObject(hdc, hNewPen);
2335
2336         MoveToEx(hdc, item->stateOffset, centery, NULL);
2337         LineTo(hdc, centerx - 1, centery);
2338
2339         if (item->prevSibling || item->parent != infoPtr->root)
2340         {
2341             MoveToEx(hdc, centerx, item->rect.top, NULL);
2342             LineTo(hdc, centerx, centery);
2343         }
2344
2345         if (item->nextSibling)
2346         {
2347             MoveToEx(hdc, centerx, centery, NULL);
2348             LineTo(hdc, centerx, item->rect.bottom + 1);
2349         }
2350
2351         /* Draw the line from our parent to its next sibling. */
2352         parent = item->parent;
2353         while (parent != infoPtr->root)
2354         {
2355             int pcenterx = (parent->linesOffset + parent->stateOffset) / 2;
2356
2357             if (parent->nextSibling
2358                 /* skip top-levels unless TVS_LINESATROOT */
2359                 && parent->stateOffset > parent->linesOffset)
2360             {
2361                 MoveToEx(hdc, pcenterx, item->rect.top, NULL);
2362                 LineTo(hdc, pcenterx, item->rect.bottom + 1);
2363             }
2364
2365             parent = parent->parent;
2366         }
2367
2368         SelectObject(hdc, hOldPen);
2369         DeleteObject(hNewPen);
2370     }
2371
2372     /*
2373      * Display the (+/-) signs
2374      */
2375
2376     if (infoPtr->dwStyle & TVS_HASBUTTONS)
2377     {
2378         if (item->cChildren)
2379         {
2380             HTHEME theme = GetWindowTheme(infoPtr->hwnd);
2381             if (theme)
2382             {
2383                 RECT glyphRect = item->rect;
2384                 glyphRect.left = item->linesOffset;
2385                 glyphRect.right = item->stateOffset;
2386                 DrawThemeBackground (theme, hdc, TVP_GLYPH,
2387                     (item->state & TVIS_EXPANDED) ? GLPS_OPENED : GLPS_CLOSED,
2388                     &glyphRect, NULL);
2389             }
2390             else
2391             {
2392                 LONG height = item->rect.bottom - item->rect.top;
2393                 LONG width  = item->stateOffset - item->linesOffset;
2394                 LONG rectsize = min(height, width) / 4;
2395                 /* plussize = ceil(rectsize * 3/4) */
2396                 LONG plussize = (rectsize + 1) * 3 / 4;
2397
2398                 HPEN hNewPen  = CreatePen(PS_SOLID, 0, infoPtr->clrLine);
2399                 HPEN hOldPen  = SelectObject(hdc, hNewPen);
2400
2401                 Rectangle(hdc, centerx - rectsize - 1, centery - rectsize - 1,
2402                           centerx + rectsize + 2, centery + rectsize + 2);
2403
2404                 SelectObject(hdc, hOldPen);
2405                 DeleteObject(hNewPen);
2406
2407                 if (height < 18 || width < 18)
2408                 {
2409                     MoveToEx(hdc, centerx - plussize + 1, centery, NULL);
2410                     LineTo(hdc, centerx + plussize, centery);
2411
2412                     if (!(item->state & TVIS_EXPANDED))
2413                     {
2414                         MoveToEx(hdc, centerx, centery - plussize + 1, NULL);
2415                         LineTo(hdc, centerx, centery + plussize);
2416                     }
2417                 }
2418                 else
2419                 {
2420                     Rectangle(hdc, centerx - plussize + 1, centery - 1,
2421                     centerx + plussize, centery + 2);
2422
2423                     if (!(item->state & TVIS_EXPANDED))
2424                     {
2425                         Rectangle(hdc, centerx - 1, centery - plussize + 1,
2426                         centerx + 2, centery + plussize);
2427                         SetPixel(hdc, centerx - 1, centery, infoPtr->clrBk);
2428                         SetPixel(hdc, centerx + 1, centery, infoPtr->clrBk);
2429                     }
2430                 }
2431             }
2432         }
2433     }
2434     SelectObject(hdc, hbrOld);
2435     DeleteObject(hbr);
2436 }
2437
2438 static void
2439 TREEVIEW_DrawItem(TREEVIEW_INFO *infoPtr, HDC hdc, TREEVIEW_ITEM *wineItem)
2440 {
2441     INT cditem;
2442     HFONT hOldFont;
2443     COLORREF oldTextColor, oldTextBkColor;
2444     int centery;
2445     BOOL inFocus = (GetFocus() == infoPtr->hwnd);
2446     NMTVCUSTOMDRAW nmcdhdr;
2447
2448     TREEVIEW_UpdateDispInfo(infoPtr, wineItem, CALLBACK_MASK_ALL);
2449
2450     /* - If item is drop target or it is selected and window is in focus -
2451      * use blue background (COLOR_HIGHLIGHT).
2452      * - If item is selected, window is not in focus, but it has style
2453      * TVS_SHOWSELALWAYS - use grey background (COLOR_BTNFACE)
2454      * - Otherwise - use background color
2455      */
2456     if ((wineItem->state & TVIS_DROPHILITED) || ((wineItem == infoPtr->focusedItem) && !(wineItem->state & TVIS_SELECTED)) ||
2457         ((wineItem->state & TVIS_SELECTED) && (!infoPtr->focusedItem) &&
2458          (inFocus || (infoPtr->dwStyle & TVS_SHOWSELALWAYS))))
2459     {
2460         if ((wineItem->state & TVIS_DROPHILITED) || inFocus)
2461         {
2462             nmcdhdr.clrTextBk = GetSysColor(COLOR_HIGHLIGHT);
2463             nmcdhdr.clrText   = GetSysColor(COLOR_HIGHLIGHTTEXT);
2464         }
2465         else
2466         {
2467             nmcdhdr.clrTextBk = GetSysColor(COLOR_BTNFACE);
2468             if (infoPtr->clrText == -1)
2469                 nmcdhdr.clrText = GetSysColor(COLOR_WINDOWTEXT);
2470             else
2471                 nmcdhdr.clrText = infoPtr->clrText;
2472         }
2473     }
2474     else
2475     {
2476         nmcdhdr.clrTextBk = infoPtr->clrBk;
2477         if ((infoPtr->dwStyle & TVS_TRACKSELECT) && (wineItem == infoPtr->hotItem))
2478             nmcdhdr.clrText = comctl32_color.clrHighlight;
2479         else if (infoPtr->clrText == -1)
2480             nmcdhdr.clrText = GetSysColor(COLOR_WINDOWTEXT);
2481         else
2482             nmcdhdr.clrText = infoPtr->clrText;
2483     }
2484
2485     hOldFont = SelectObject(hdc, TREEVIEW_FontForItem(infoPtr, wineItem));
2486
2487     /* The custom draw handler can query the text rectangle,
2488      * so get ready. */
2489     /* should already be known, set to 0 when changed */
2490     if (!wineItem->textWidth)
2491         TREEVIEW_ComputeTextWidth(infoPtr, wineItem, hdc);
2492
2493     cditem = 0;
2494
2495     if (infoPtr->cdmode & CDRF_NOTIFYITEMDRAW)
2496     {
2497         cditem = TREEVIEW_SendCustomDrawItemNotify
2498             (infoPtr, hdc, wineItem, CDDS_ITEMPREPAINT, &nmcdhdr);
2499         TRACE("prepaint:cditem-app returns 0x%x\n", cditem);
2500
2501         if (cditem & CDRF_SKIPDEFAULT)
2502         {
2503             SelectObject(hdc, hOldFont);
2504             return;
2505         }
2506     }
2507
2508     if (cditem & CDRF_NEWFONT)
2509         TREEVIEW_ComputeTextWidth(infoPtr, wineItem, hdc);
2510
2511     TREEVIEW_DrawItemLines(infoPtr, hdc, wineItem);
2512
2513     /* Set colors. Custom draw handler can change these so we do this after it. */
2514     oldTextColor = SetTextColor(hdc, nmcdhdr.clrText);
2515     oldTextBkColor = SetBkColor(hdc, nmcdhdr.clrTextBk);
2516
2517     centery = (wineItem->rect.top + wineItem->rect.bottom) / 2;
2518
2519     /*
2520      * Display the images associated with this item
2521      */
2522     {
2523         INT imageIndex;
2524
2525         /* State images are displayed to the left of the Normal image
2526          * image number is in state; zero should be `display no image'.
2527          */
2528         imageIndex = STATEIMAGEINDEX(wineItem->state);
2529
2530         if (infoPtr->himlState && imageIndex)
2531         {
2532             ImageList_Draw(infoPtr->himlState, imageIndex, hdc,
2533                            wineItem->stateOffset,
2534                            centery - infoPtr->stateImageHeight / 2,
2535                            ILD_NORMAL);
2536         }
2537
2538         /* Now, draw the normal image; can be either selected or
2539          * non-selected image.
2540          */
2541
2542         if ((wineItem->state & TVIS_SELECTED) && (wineItem->iSelectedImage >= 0))
2543         {
2544             /* The item is currently selected */
2545             imageIndex = wineItem->iSelectedImage;
2546         }
2547         else
2548         {
2549             /* The item is not selected */
2550             imageIndex = wineItem->iImage;
2551         }
2552
2553         if (infoPtr->himlNormal)
2554         {
2555             int ovlIdx = wineItem->state & TVIS_OVERLAYMASK;
2556
2557             ImageList_Draw(infoPtr->himlNormal, imageIndex, hdc,
2558                            wineItem->imageOffset,
2559                            centery - infoPtr->normalImageHeight / 2,
2560                            ILD_NORMAL | ovlIdx);
2561         }
2562     }
2563
2564
2565     /*
2566      * Display the text associated with this item
2567      */
2568
2569     /* Don't paint item's text if it's being edited */
2570     if (!infoPtr->hwndEdit || (infoPtr->selectedItem != wineItem))
2571     {
2572         if (wineItem->pszText)
2573         {
2574             RECT rcText;
2575
2576             rcText.top = wineItem->rect.top;
2577             rcText.bottom = wineItem->rect.bottom;
2578             rcText.left = wineItem->textOffset;
2579             rcText.right = rcText.left + wineItem->textWidth + 4;
2580
2581             TRACE("drawing text %s at (%d,%d)-(%d,%d)\n",
2582                   debugstr_w(wineItem->pszText),
2583                   rcText.left, rcText.top, rcText.right, rcText.bottom);
2584
2585             /* Draw it */
2586             ExtTextOutW(hdc, rcText.left + 2, rcText.top + 1,
2587                         ETO_CLIPPED | ETO_OPAQUE,
2588                         &rcText,
2589                         wineItem->pszText,
2590                         lstrlenW(wineItem->pszText),
2591                         NULL);
2592
2593             /* Draw the box around the selected item */
2594             if ((wineItem == infoPtr->selectedItem) && inFocus)
2595             {
2596                 DrawFocusRect(hdc,&rcText);
2597             }
2598
2599         }
2600     }
2601
2602     /* Draw insertion mark if necessary */
2603
2604     if (infoPtr->insertMarkItem)
2605         TRACE("item:%d,mark:%p\n",
2606               TREEVIEW_GetItemIndex(infoPtr, wineItem),
2607               infoPtr->insertMarkItem);
2608
2609     if (wineItem == infoPtr->insertMarkItem)
2610     {
2611         HPEN hNewPen, hOldPen;
2612         int offset;
2613         int left, right;
2614
2615         hNewPen = CreatePen(PS_SOLID, 2, infoPtr->clrInsertMark);
2616         hOldPen = SelectObject(hdc, hNewPen);
2617
2618         if (infoPtr->insertBeforeorAfter)
2619             offset = wineItem->rect.bottom - 1;
2620         else
2621             offset = wineItem->rect.top + 1;
2622
2623         left = wineItem->textOffset - 2;
2624         right = wineItem->textOffset + wineItem->textWidth + 2;
2625
2626         MoveToEx(hdc, left, offset - 3, NULL);
2627         LineTo(hdc, left, offset + 4);
2628
2629         MoveToEx(hdc, left, offset, NULL);
2630         LineTo(hdc, right + 1, offset);
2631
2632         MoveToEx(hdc, right, offset + 3, NULL);
2633         LineTo(hdc, right, offset - 4);
2634
2635         SelectObject(hdc, hOldPen);
2636         DeleteObject(hNewPen);
2637     }
2638
2639     if (cditem & CDRF_NOTIFYPOSTPAINT)
2640     {
2641         cditem = TREEVIEW_SendCustomDrawItemNotify
2642             (infoPtr, hdc, wineItem, CDDS_ITEMPOSTPAINT, &nmcdhdr);
2643         TRACE("postpaint:cditem-app returns 0x%x\n", cditem);
2644     }
2645
2646     /* Restore the hdc state */
2647     SetTextColor(hdc, oldTextColor);
2648     SetBkColor(hdc, oldTextBkColor);
2649     SelectObject(hdc, hOldFont);
2650 }
2651
2652 /* Computes treeHeight and treeWidth and updates the scroll bars.
2653  */
2654 static void
2655 TREEVIEW_UpdateScrollBars(TREEVIEW_INFO *infoPtr)
2656 {
2657     TREEVIEW_ITEM *wineItem;
2658     HWND hwnd = infoPtr->hwnd;
2659     BOOL vert = FALSE;
2660     BOOL horz = FALSE;
2661     SCROLLINFO si;
2662     LONG scrollX = infoPtr->scrollX;
2663
2664     infoPtr->treeWidth = 0;
2665     infoPtr->treeHeight = 0;
2666
2667     /* We iterate through all visible items in order to get the tree height
2668      * and width */
2669     wineItem = infoPtr->root->firstChild;
2670
2671     while (wineItem != NULL)
2672     {
2673         if (ISVISIBLE(wineItem))
2674         {
2675             /* actually we draw text at textOffset + 2 */
2676             if (2+wineItem->textOffset+wineItem->textWidth > infoPtr->treeWidth)
2677                 infoPtr->treeWidth = wineItem->textOffset+wineItem->textWidth+2;
2678
2679             /* This is scroll-adjusted, but we fix this below. */
2680             infoPtr->treeHeight = wineItem->rect.bottom;
2681         }
2682
2683         wineItem = TREEVIEW_GetNextListItem(infoPtr, wineItem);
2684     }
2685
2686     /* Fix the scroll adjusted treeHeight and treeWidth. */
2687     if (infoPtr->root->firstChild)
2688         infoPtr->treeHeight -= infoPtr->root->firstChild->rect.top;
2689
2690     infoPtr->treeWidth += infoPtr->scrollX;
2691
2692     if (infoPtr->dwStyle & TVS_NOSCROLL) return;
2693
2694     /* Adding one scroll bar may take up enough space that it forces us
2695      * to add the other as well. */
2696     if (infoPtr->treeHeight > infoPtr->clientHeight)
2697     {
2698         vert = TRUE;
2699
2700         if (infoPtr->treeWidth
2701             > infoPtr->clientWidth - GetSystemMetrics(SM_CXVSCROLL))
2702             horz = TRUE;
2703     }
2704     else if (infoPtr->treeWidth > infoPtr->clientWidth || infoPtr->scrollX > 0)
2705         horz = TRUE;
2706
2707     if (!vert && horz && infoPtr->treeHeight
2708         > infoPtr->clientHeight - GetSystemMetrics(SM_CYVSCROLL))
2709         vert = TRUE;
2710
2711     if (horz && (infoPtr->dwStyle & TVS_NOHSCROLL)) horz = FALSE;
2712
2713     si.cbSize = sizeof(SCROLLINFO);
2714     si.fMask  = SIF_POS|SIF_RANGE|SIF_PAGE;
2715     si.nMin   = 0;
2716
2717     if (vert)
2718     {
2719         si.nPage = TREEVIEW_GetVisibleCount(infoPtr);
2720        if ( si.nPage && NULL != infoPtr->firstVisible)
2721        {
2722            si.nPos  = infoPtr->firstVisible->visibleOrder;
2723            si.nMax  = infoPtr->maxVisibleOrder - 1;
2724
2725            SetScrollInfo(hwnd, SB_VERT, &si, TRUE);
2726
2727            if (!(infoPtr->uInternalStatus & TV_VSCROLL))
2728                ShowScrollBar(hwnd, SB_VERT, TRUE);
2729            infoPtr->uInternalStatus |= TV_VSCROLL;
2730        }
2731        else
2732        {
2733            if (infoPtr->uInternalStatus & TV_VSCROLL)
2734                ShowScrollBar(hwnd, SB_VERT, FALSE);
2735            infoPtr->uInternalStatus &= ~TV_VSCROLL;
2736        }
2737     }
2738     else
2739     {
2740         if (infoPtr->uInternalStatus & TV_VSCROLL)
2741             ShowScrollBar(hwnd, SB_VERT, FALSE);
2742         infoPtr->uInternalStatus &= ~TV_VSCROLL;
2743     }
2744
2745     if (horz)
2746     {
2747         si.nPage = infoPtr->clientWidth;
2748         si.nPos  = infoPtr->scrollX;
2749         si.nMax  = infoPtr->treeWidth - 1;
2750
2751         if (si.nPos > si.nMax - max( si.nPage-1, 0 ))
2752         {
2753            si.nPos = si.nMax - max( si.nPage-1, 0 );
2754            scrollX = si.nPos;
2755         }
2756
2757         if (!(infoPtr->uInternalStatus & TV_HSCROLL))
2758             ShowScrollBar(hwnd, SB_HORZ, TRUE);
2759         infoPtr->uInternalStatus |= TV_HSCROLL;
2760
2761         SetScrollInfo(hwnd, SB_HORZ, &si, TRUE);
2762         TREEVIEW_HScroll(infoPtr,
2763                         MAKEWPARAM(SB_THUMBPOSITION, scrollX));
2764     }
2765     else
2766     {
2767         if (infoPtr->uInternalStatus & TV_HSCROLL)
2768             ShowScrollBar(hwnd, SB_HORZ, FALSE);
2769         infoPtr->uInternalStatus &= ~TV_HSCROLL;
2770
2771         scrollX = 0;
2772         if (infoPtr->scrollX != 0)
2773         {
2774             TREEVIEW_HScroll(infoPtr,
2775                             MAKEWPARAM(SB_THUMBPOSITION, scrollX));
2776         }
2777     }
2778
2779     if (!horz)
2780         infoPtr->uInternalStatus &= ~TV_HSCROLL;
2781 }
2782
2783 /* CtrlSpy doesn't mention this, but CorelDRAW's object manager needs it. */
2784 static LRESULT
2785 TREEVIEW_EraseBackground(TREEVIEW_INFO *infoPtr, HDC hDC)
2786 {
2787     HBRUSH hBrush = CreateSolidBrush(infoPtr->clrBk);
2788     RECT rect;
2789
2790     GetClientRect(infoPtr->hwnd, &rect);
2791     FillRect(hDC, &rect, hBrush);
2792     DeleteObject(hBrush);
2793
2794     return 1;
2795 }
2796
2797 static void
2798 TREEVIEW_Refresh(TREEVIEW_INFO *infoPtr, HDC hdc, RECT *rc)
2799 {
2800     HWND hwnd = infoPtr->hwnd;
2801     RECT rect = *rc;
2802     TREEVIEW_ITEM *wineItem;
2803
2804     if (infoPtr->clientHeight == 0 || infoPtr->clientWidth == 0)
2805     {
2806         TRACE("empty window\n");
2807         return;
2808     }
2809
2810     infoPtr->cdmode = TREEVIEW_SendCustomDrawNotify(infoPtr, CDDS_PREPAINT,
2811                                                     hdc, rect);
2812
2813     if (infoPtr->cdmode == CDRF_SKIPDEFAULT)
2814     {
2815         ReleaseDC(hwnd, hdc);
2816         return;
2817     }
2818
2819     for (wineItem = infoPtr->root->firstChild;
2820          wineItem != NULL;
2821          wineItem = TREEVIEW_GetNextListItem(infoPtr, wineItem))
2822     {
2823         if (ISVISIBLE(wineItem))
2824         {
2825             /* Avoid unneeded calculations */
2826             if (wineItem->rect.top > rect.bottom)
2827                 break;
2828             if (wineItem->rect.bottom < rect.top)
2829                 continue;
2830
2831             TREEVIEW_DrawItem(infoPtr, hdc, wineItem);
2832         }
2833     }
2834
2835     TREEVIEW_UpdateScrollBars(infoPtr);
2836
2837     if (infoPtr->cdmode & CDRF_NOTIFYPOSTPAINT)
2838         infoPtr->cdmode =
2839             TREEVIEW_SendCustomDrawNotify(infoPtr, CDDS_POSTPAINT, hdc, rect);
2840 }
2841
2842 static void
2843 TREEVIEW_Invalidate(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
2844 {
2845     if (item != NULL)
2846         InvalidateRect(infoPtr->hwnd, &item->rect, TRUE);
2847     else
2848         InvalidateRect(infoPtr->hwnd, NULL, TRUE);
2849 }
2850
2851 static LRESULT
2852 TREEVIEW_Paint(TREEVIEW_INFO *infoPtr, WPARAM wParam)
2853 {
2854     HDC hdc;
2855     PAINTSTRUCT ps;
2856     RECT rc;
2857
2858     TRACE("\n");
2859
2860     if (wParam)
2861     {
2862         hdc = (HDC)wParam;
2863         GetClientRect(infoPtr->hwnd, &rc);
2864         TREEVIEW_EraseBackground(infoPtr, hdc);
2865     }
2866     else
2867     {
2868         hdc = BeginPaint(infoPtr->hwnd, &ps);
2869         rc = ps.rcPaint;
2870     }
2871
2872     if(infoPtr->bRedraw) /* WM_SETREDRAW sets bRedraw */
2873         TREEVIEW_Refresh(infoPtr, hdc, &rc);
2874
2875     if (!wParam)
2876         EndPaint(infoPtr->hwnd, &ps);
2877
2878     return 0;
2879 }
2880
2881
2882 /* Sorting **************************************************************/
2883
2884 /***************************************************************************
2885  * Forward the DPA local callback to the treeview owner callback
2886  */
2887 static INT WINAPI
2888 TREEVIEW_CallBackCompare(TREEVIEW_ITEM *first, TREEVIEW_ITEM *second, LPTVSORTCB pCallBackSort)
2889 {
2890     /* Forward the call to the client-defined callback */
2891     return pCallBackSort->lpfnCompare(first->lParam,
2892                                       second->lParam,
2893                                       pCallBackSort->lParam);
2894 }
2895
2896 /***************************************************************************
2897  * Treeview native sort routine: sort on item text.
2898  */
2899 static INT WINAPI
2900 TREEVIEW_SortOnName(TREEVIEW_ITEM *first, TREEVIEW_ITEM *second,
2901                      TREEVIEW_INFO *infoPtr)
2902 {
2903     TREEVIEW_UpdateDispInfo(infoPtr, first, TVIF_TEXT);
2904     TREEVIEW_UpdateDispInfo(infoPtr, second, TVIF_TEXT);
2905
2906     if(first->pszText && second->pszText)
2907         return lstrcmpiW(first->pszText, second->pszText);
2908     else if(first->pszText)
2909         return -1;
2910     else if(second->pszText)
2911         return 1;
2912     else
2913         return 0;
2914 }
2915
2916 /* Returns the number of physical children belonging to item. */
2917 static INT
2918 TREEVIEW_CountChildren(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
2919 {
2920     INT cChildren = 0;
2921     HTREEITEM hti;
2922
2923     for (hti = item->firstChild; hti != NULL; hti = hti->nextSibling)
2924         cChildren++;
2925
2926     return cChildren;
2927 }
2928
2929 /* Returns a DPA containing a pointer to each physical child of item in
2930  * sibling order. If item has no children, an empty DPA is returned. */
2931 static HDPA
2932 TREEVIEW_BuildChildDPA(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
2933 {
2934     HTREEITEM child = item->firstChild;
2935
2936     HDPA list = DPA_Create(8);
2937     if (list == 0) return NULL;
2938
2939     for (child = item->firstChild; child != NULL; child = child->nextSibling)
2940     {
2941         if (DPA_InsertPtr(list, INT_MAX, child) == -1)
2942         {
2943             DPA_Destroy(list);
2944             return NULL;
2945         }
2946     }
2947
2948     return list;
2949 }
2950
2951 /***************************************************************************
2952  * Setup the treeview structure with regards of the sort method
2953  * and sort the children of the TV item specified in lParam
2954  * fRecurse: currently unused. Should be zero.
2955  * parent: if pSort!=NULL, should equal pSort->hParent.
2956  *         otherwise, item which child items are to be sorted.
2957  * pSort:  sort method info. if NULL, sort on item text.
2958  *         if non-NULL, sort on item's lParam content, and let the
2959  *         application decide what that means. See also TVM_SORTCHILDRENCB.
2960  */
2961
2962 static LRESULT
2963 TREEVIEW_Sort(TREEVIEW_INFO *infoPtr, BOOL fRecurse, HTREEITEM parent,
2964               LPTVSORTCB pSort)
2965 {
2966     INT cChildren;
2967     PFNDPACOMPARE pfnCompare;
2968     LPARAM lpCompare;
2969
2970     /* undocumented feature: TVI_ROOT or NULL means `sort the whole tree' */
2971     if (parent == TVI_ROOT || parent == NULL)
2972         parent = infoPtr->root;
2973
2974     /* Check for a valid handle to the parent item */
2975     if (!TREEVIEW_ValidItem(infoPtr, parent))
2976     {
2977         ERR("invalid item hParent=%p\n", parent);
2978         return FALSE;
2979     }
2980
2981     if (pSort)
2982     {
2983         pfnCompare = (PFNDPACOMPARE)TREEVIEW_CallBackCompare;
2984         lpCompare = (LPARAM)pSort;
2985     }
2986     else
2987     {
2988         pfnCompare = (PFNDPACOMPARE)TREEVIEW_SortOnName;
2989         lpCompare = (LPARAM)infoPtr;
2990     }
2991
2992     cChildren = TREEVIEW_CountChildren(infoPtr, parent);
2993
2994     /* Make sure there is something to sort */
2995     if (cChildren > 1)
2996     {
2997         /* TREEVIEW_ITEM rechaining */
2998         INT count = 0;
2999         HTREEITEM item = 0;
3000         HTREEITEM nextItem = 0;
3001         HTREEITEM prevItem = 0;
3002
3003         HDPA sortList = TREEVIEW_BuildChildDPA(infoPtr, parent);
3004
3005         if (sortList == NULL)
3006             return FALSE;
3007
3008         /* let DPA sort the list */
3009         DPA_Sort(sortList, pfnCompare, lpCompare);
3010
3011         /* The order of DPA entries has been changed, so fixup the
3012          * nextSibling and prevSibling pointers. */
3013
3014         item = (HTREEITEM)DPA_GetPtr(sortList, count++);
3015         while ((nextItem = (HTREEITEM)DPA_GetPtr(sortList, count++)) != NULL)
3016         {
3017             /* link the two current item toghether */
3018             item->nextSibling = nextItem;
3019             nextItem->prevSibling = item;
3020
3021             if (prevItem == NULL)
3022             {
3023                 /* this is the first item, update the parent */
3024                 parent->firstChild = item;
3025                 item->prevSibling = NULL;
3026             }
3027             else
3028             {
3029                 /* fix the back chaining */
3030                 item->prevSibling = prevItem;
3031             }
3032
3033             /* get ready for the next one */
3034             prevItem = item;
3035             item = nextItem;
3036         }
3037
3038         /* the last item is pointed to by item and never has a sibling */
3039         item->nextSibling = NULL;
3040         parent->lastChild = item;
3041
3042         DPA_Destroy(sortList);
3043
3044         TREEVIEW_VerifyTree(infoPtr);
3045
3046         if (parent->state & TVIS_EXPANDED)
3047         {
3048             int visOrder = infoPtr->firstVisible->visibleOrder;
3049
3050         if (parent == infoPtr->root)
3051             TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
3052         else
3053             TREEVIEW_RecalculateVisibleOrder(infoPtr, parent);
3054
3055             if (TREEVIEW_IsChildOf(parent, infoPtr->firstVisible))
3056             {
3057                 TREEVIEW_ITEM *item;
3058
3059                 for (item = infoPtr->root->firstChild; item != NULL;
3060                      item = TREEVIEW_GetNextListItem(infoPtr, item))
3061                 {
3062                     if (item->visibleOrder == visOrder)
3063                         break;
3064                 }
3065
3066                 if (!item) item = parent->firstChild;
3067                 TREEVIEW_SetFirstVisible(infoPtr, item, FALSE);
3068             }
3069
3070             TREEVIEW_Invalidate(infoPtr, NULL);
3071         }
3072
3073         return TRUE;
3074     }
3075     return FALSE;
3076 }
3077
3078
3079 /***************************************************************************
3080  * Setup the treeview structure with regards of the sort method
3081  * and sort the children of the TV item specified in lParam
3082  */
3083 static LRESULT
3084 TREEVIEW_SortChildrenCB(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPTVSORTCB pSort)
3085 {
3086     return TREEVIEW_Sort(infoPtr, wParam, pSort->hParent, pSort);
3087 }
3088
3089
3090 /***************************************************************************
3091  * Sort the children of the TV item specified in lParam.
3092  */
3093 static LRESULT
3094 TREEVIEW_SortChildren(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
3095 {
3096     return TREEVIEW_Sort(infoPtr, (BOOL)wParam, (HTREEITEM)lParam, NULL);
3097 }
3098
3099
3100 /* Expansion/Collapse ***************************************************/
3101
3102 static BOOL
3103 TREEVIEW_SendExpanding(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
3104                        UINT action)
3105 {
3106     return !TREEVIEW_SendTreeviewNotify(infoPtr, TVN_ITEMEXPANDINGW, action,
3107                                         TVIF_HANDLE | TVIF_STATE | TVIF_PARAM
3108                                         | TVIF_IMAGE | TVIF_SELECTEDIMAGE,
3109                                         0, wineItem);
3110 }
3111
3112 static VOID
3113 TREEVIEW_SendExpanded(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
3114                       UINT action)
3115 {
3116     TREEVIEW_SendTreeviewNotify(infoPtr, TVN_ITEMEXPANDEDW, action,
3117                                 TVIF_HANDLE | TVIF_STATE | TVIF_PARAM
3118                                 | TVIF_IMAGE | TVIF_SELECTEDIMAGE,
3119                                 0, wineItem);
3120 }
3121
3122
3123 /* This corresponds to TVM_EXPAND with TVE_COLLAPSE.
3124  * bRemoveChildren corresponds to TVE_COLLAPSERESET. */
3125 static BOOL
3126 TREEVIEW_Collapse(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
3127                   BOOL bRemoveChildren, BOOL bUser)
3128 {
3129     UINT action = TVE_COLLAPSE | (bRemoveChildren ? TVE_COLLAPSERESET : 0);
3130     BOOL bSetSelection, bSetFirstVisible;
3131     RECT scrollRect;
3132     LONG scrollDist = 0;
3133     TREEVIEW_ITEM *nextItem = NULL, *tmpItem;
3134
3135     TRACE("TVE_COLLAPSE %p %s\n", wineItem, TREEVIEW_ItemName(wineItem));
3136
3137     if (!(wineItem->state & TVIS_EXPANDED))
3138         return FALSE;
3139
3140     if (bUser || !(wineItem->state & TVIS_EXPANDEDONCE))
3141         TREEVIEW_SendExpanding(infoPtr, wineItem, action);
3142
3143     if (wineItem->firstChild == NULL)
3144         return FALSE;
3145
3146     wineItem->state &= ~TVIS_EXPANDED;
3147
3148     if (bUser || !(wineItem->state & TVIS_EXPANDEDONCE))
3149         TREEVIEW_SendExpanded(infoPtr, wineItem, action);
3150
3151     bSetSelection = (infoPtr->selectedItem != NULL
3152                      && TREEVIEW_IsChildOf(wineItem, infoPtr->selectedItem));
3153
3154     bSetFirstVisible = (infoPtr->firstVisible != NULL
3155                         && TREEVIEW_IsChildOf(wineItem, infoPtr->firstVisible));
3156
3157     tmpItem = wineItem;
3158     while (tmpItem)
3159     {
3160         if (tmpItem->nextSibling)
3161         {
3162             nextItem = tmpItem->nextSibling;
3163             break;
3164         }
3165         tmpItem = tmpItem->parent;
3166     }
3167
3168     if (nextItem)
3169         scrollDist = nextItem->rect.top;
3170
3171     if (bRemoveChildren)
3172     {
3173         INT old_cChildren = wineItem->cChildren;
3174         TRACE("TVE_COLLAPSERESET\n");
3175         wineItem->state &= ~TVIS_EXPANDEDONCE;
3176         TREEVIEW_RemoveAllChildren(infoPtr, wineItem);
3177         wineItem->cChildren = old_cChildren;
3178     }
3179
3180     if (wineItem->firstChild)
3181     {
3182         TREEVIEW_ITEM *item, *sibling;
3183
3184         sibling = TREEVIEW_GetNextListItem(infoPtr, wineItem);
3185
3186         for (item = wineItem->firstChild; item != sibling;
3187              item = TREEVIEW_GetNextListItem(infoPtr, item))
3188         {
3189             item->visibleOrder = -1;
3190         }
3191     }
3192
3193     TREEVIEW_RecalculateVisibleOrder(infoPtr, wineItem);
3194
3195     if (nextItem)
3196         scrollDist = -(scrollDist - nextItem->rect.top);
3197
3198     if (bSetSelection)
3199     {
3200         /* Don't call DoSelectItem, it sends notifications. */
3201         if (TREEVIEW_ValidItem(infoPtr, infoPtr->selectedItem))
3202             infoPtr->selectedItem->state &= ~TVIS_SELECTED;
3203         wineItem->state |= TVIS_SELECTED;
3204         infoPtr->selectedItem = wineItem;
3205     }
3206
3207     TREEVIEW_UpdateScrollBars(infoPtr);
3208
3209     scrollRect.left = 0;
3210     scrollRect.right = infoPtr->clientWidth;
3211     scrollRect.bottom = infoPtr->clientHeight;
3212
3213     if (nextItem)
3214     {
3215         scrollRect.top = nextItem->rect.top;
3216
3217         ScrollWindowEx (infoPtr->hwnd, 0, scrollDist, &scrollRect, NULL,
3218                        NULL, NULL, SW_ERASE | SW_INVALIDATE);
3219         TREEVIEW_Invalidate(infoPtr, wineItem);
3220     } else {
3221         scrollRect.top = wineItem->rect.top;
3222         InvalidateRect(infoPtr->hwnd, &scrollRect, TRUE);
3223     }
3224
3225     TREEVIEW_SetFirstVisible(infoPtr,
3226                              bSetFirstVisible ? wineItem : infoPtr->firstVisible,
3227                              TRUE);
3228
3229     return TRUE;
3230 }
3231
3232 static BOOL
3233 TREEVIEW_Expand(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
3234                 BOOL bExpandPartial, BOOL bUser)
3235 {
3236     LONG scrollDist;
3237     LONG orgNextTop = 0;
3238     RECT scrollRect;
3239     TREEVIEW_ITEM *nextItem, *tmpItem;
3240
3241     TRACE("\n");
3242
3243     if (wineItem->state & TVIS_EXPANDED)
3244        return TRUE;
3245
3246     tmpItem = wineItem; nextItem = NULL;
3247     while (tmpItem)
3248     {
3249         if (tmpItem->nextSibling)
3250         {
3251             nextItem = tmpItem->nextSibling;
3252             break;
3253         }
3254         tmpItem = tmpItem->parent;
3255     }
3256
3257     if (nextItem)
3258         orgNextTop = nextItem->rect.top;
3259
3260     TRACE("TVE_EXPAND %p %s\n", wineItem, TREEVIEW_ItemName(wineItem));
3261
3262     if (bUser || ((wineItem->cChildren != 0) &&
3263                   !(wineItem->state & TVIS_EXPANDEDONCE)))
3264     {
3265         if (!TREEVIEW_SendExpanding(infoPtr, wineItem, TVE_EXPAND))
3266         {
3267             TRACE("  TVN_ITEMEXPANDING returned TRUE, exiting...\n");
3268             return FALSE;
3269         }
3270
3271         if (!wineItem->firstChild)
3272             return FALSE;
3273
3274         wineItem->state |= TVIS_EXPANDED;
3275         TREEVIEW_SendExpanded(infoPtr, wineItem, TVE_EXPAND);
3276         wineItem->state |= TVIS_EXPANDEDONCE;
3277     }
3278     else
3279     {
3280         if (!wineItem->firstChild)
3281             return FALSE;
3282
3283         /* this item has already been expanded */
3284         wineItem->state |= TVIS_EXPANDED;
3285     }
3286
3287     if (bExpandPartial)
3288         FIXME("TVE_EXPANDPARTIAL not implemented\n");
3289
3290     TREEVIEW_RecalculateVisibleOrder(infoPtr, wineItem);
3291     TREEVIEW_UpdateSubTree(infoPtr, wineItem);
3292     TREEVIEW_UpdateScrollBars(infoPtr);
3293
3294     scrollRect.left = 0;
3295     scrollRect.bottom = infoPtr->treeHeight;
3296     scrollRect.right = infoPtr->clientWidth;
3297     if (nextItem)
3298     {
3299         scrollDist = nextItem->rect.top - orgNextTop;
3300         scrollRect.top = orgNextTop;
3301
3302         ScrollWindowEx (infoPtr->hwnd, 0, scrollDist, &scrollRect, NULL,
3303                        NULL, NULL, SW_ERASE | SW_INVALIDATE);
3304         TREEVIEW_Invalidate (infoPtr, wineItem);
3305     } else {
3306         scrollRect.top = wineItem->rect.top;
3307         InvalidateRect(infoPtr->hwnd, &scrollRect, FALSE);
3308     }
3309
3310     /* Scroll up so that as many children as possible are visible.
3311      * This fails when expanding causes an HScroll bar to appear, but we
3312      * don't know that yet, so the last item is obscured. */
3313     if (wineItem->firstChild != NULL)
3314     {
3315         int nChildren = wineItem->lastChild->visibleOrder
3316             - wineItem->firstChild->visibleOrder + 1;
3317
3318         int visible_pos = wineItem->visibleOrder
3319             - infoPtr->firstVisible->visibleOrder;
3320
3321         int rows_below = TREEVIEW_GetVisibleCount(infoPtr) - visible_pos - 1;
3322
3323         if (visible_pos > 0 && nChildren > rows_below)
3324         {
3325             int scroll = nChildren - rows_below;
3326
3327             if (scroll > visible_pos)
3328                 scroll = visible_pos;
3329
3330             if (scroll > 0)
3331             {
3332                 TREEVIEW_ITEM *newFirstVisible
3333                     = TREEVIEW_GetListItem(infoPtr, infoPtr->firstVisible,
3334                                            scroll);
3335
3336
3337                 TREEVIEW_SetFirstVisible(infoPtr, newFirstVisible, TRUE);
3338             }
3339         }
3340     }
3341
3342     return TRUE;
3343 }
3344
3345 static BOOL
3346 TREEVIEW_Toggle(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem, BOOL bUser)
3347 {
3348     TRACE("\n");
3349
3350     if (wineItem->state & TVIS_EXPANDED)
3351         return TREEVIEW_Collapse(infoPtr, wineItem, FALSE, bUser);
3352     else
3353         return TREEVIEW_Expand(infoPtr, wineItem, FALSE, bUser);
3354 }
3355
3356 static VOID
3357 TREEVIEW_ExpandAll(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
3358 {
3359     TREEVIEW_Expand(infoPtr, item, FALSE, TRUE);
3360
3361     for (item = item->firstChild; item != NULL; item = item->nextSibling)
3362     {
3363         if (TREEVIEW_HasChildren(infoPtr, item))
3364             TREEVIEW_ExpandAll(infoPtr, item);
3365     }
3366 }
3367
3368 /* Note:If the specified item is the child of a collapsed parent item,
3369    the parent's list of child items is (recursively) expanded to reveal the
3370    specified item. This is mentioned for TREEVIEW_SelectItem; don't
3371    know if it also applies here.
3372 */
3373
3374 static LRESULT
3375 TREEVIEW_ExpandMsg(TREEVIEW_INFO *infoPtr, UINT flag, HTREEITEM wineItem)
3376 {
3377     if (!TREEVIEW_ValidItem(infoPtr, wineItem))
3378         return 0;
3379
3380     TRACE("For (%s) item:%d, flags %x, state:%d\n",
3381               TREEVIEW_ItemName(wineItem), flag,
3382               TREEVIEW_GetItemIndex(infoPtr, wineItem), wineItem->state);
3383
3384     switch (flag & TVE_TOGGLE)
3385     {
3386     case TVE_COLLAPSE:
3387         return TREEVIEW_Collapse(infoPtr, wineItem, flag & TVE_COLLAPSERESET,
3388                                  FALSE);
3389
3390     case TVE_EXPAND:
3391         return TREEVIEW_Expand(infoPtr, wineItem, flag & TVE_EXPANDPARTIAL,
3392                                FALSE);
3393
3394     case TVE_TOGGLE:
3395         return TREEVIEW_Toggle(infoPtr, wineItem, TRUE);
3396
3397     default:
3398         return 0;
3399     }
3400
3401 #if 0
3402     TRACE("Exiting, Item %p state is now %d...\n", wineItem, wineItem->state);
3403 #endif
3404 }
3405
3406 /* Hit-Testing **********************************************************/
3407
3408 static TREEVIEW_ITEM *
3409 TREEVIEW_HitTestPoint(TREEVIEW_INFO *infoPtr, POINT pt)
3410 {
3411     TREEVIEW_ITEM *wineItem;
3412     LONG row;
3413
3414     if (!infoPtr->firstVisible)
3415         return NULL;
3416
3417     row = pt.y / infoPtr->uItemHeight + infoPtr->firstVisible->visibleOrder;
3418
3419     for (wineItem = infoPtr->firstVisible; wineItem != NULL;
3420          wineItem = TREEVIEW_GetNextListItem(infoPtr, wineItem))
3421     {
3422         if (row >= wineItem->visibleOrder
3423             && row < wineItem->visibleOrder + wineItem->iIntegral)
3424             break;
3425     }
3426
3427     return wineItem;
3428 }
3429
3430 static LRESULT
3431 TREEVIEW_HitTest(TREEVIEW_INFO *infoPtr, LPTVHITTESTINFO lpht)
3432 {
3433     TREEVIEW_ITEM *wineItem;
3434     RECT rect;
3435     UINT status;
3436     LONG x, y;
3437
3438     lpht->hItem = 0;
3439     GetClientRect(infoPtr->hwnd, &rect);
3440     status = 0;
3441     x = lpht->pt.x;
3442     y = lpht->pt.y;
3443
3444     if (x < rect.left)
3445     {
3446         status |= TVHT_TOLEFT;
3447     }
3448     else if (x > rect.right)
3449     {
3450         status |= TVHT_TORIGHT;
3451     }
3452
3453     if (y < rect.top)
3454     {
3455         status |= TVHT_ABOVE;
3456     }
3457     else if (y > rect.bottom)
3458     {
3459         status |= TVHT_BELOW;
3460     }
3461
3462     if (status)
3463     {
3464         lpht->flags = status;
3465         return (LRESULT)(HTREEITEM)NULL;
3466     }
3467
3468     wineItem = TREEVIEW_HitTestPoint(infoPtr, lpht->pt);
3469     if (!wineItem)
3470     {
3471         lpht->flags = TVHT_NOWHERE;
3472         return (LRESULT)(HTREEITEM)NULL;
3473     }
3474
3475     if (x >= wineItem->textOffset + wineItem->textWidth)
3476     {
3477         lpht->flags = TVHT_ONITEMRIGHT;
3478     }
3479     else if (x >= wineItem->textOffset)
3480     {
3481         lpht->flags = TVHT_ONITEMLABEL;
3482     }
3483     else if (x >= wineItem->imageOffset)
3484     {
3485         lpht->flags = TVHT_ONITEMICON;
3486     }
3487     else if (x >= wineItem->stateOffset)
3488     {
3489         lpht->flags = TVHT_ONITEMSTATEICON;
3490     }
3491     else if (x >= wineItem->linesOffset && infoPtr->dwStyle & TVS_HASBUTTONS)
3492     {
3493         lpht->flags = TVHT_ONITEMBUTTON;
3494     }
3495     else
3496     {
3497         lpht->flags = TVHT_ONITEMINDENT;
3498     }
3499
3500     lpht->hItem = wineItem;
3501     TRACE("(%d,%d):result %x\n", lpht->pt.x, lpht->pt.y, lpht->flags);
3502
3503     return (LRESULT)wineItem;
3504 }
3505
3506 /* Item Label Editing ***************************************************/
3507
3508 static LRESULT
3509 TREEVIEW_GetEditControl(TREEVIEW_INFO *infoPtr)
3510 {
3511     return (LRESULT)infoPtr->hwndEdit;
3512 }
3513
3514 static LRESULT CALLBACK
3515 TREEVIEW_Edit_SubclassProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
3516 {
3517     TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(GetParent(hwnd));
3518     BOOL bCancel = FALSE;
3519     LRESULT rc;
3520
3521     switch (uMsg)
3522     {
3523     case WM_PAINT:
3524          TRACE("WM_PAINT start\n");
3525          rc = CallWindowProcW(infoPtr->wpEditOrig, hwnd, uMsg, wParam,
3526                                  lParam);
3527          TRACE("WM_PAINT done\n");
3528          return rc;
3529
3530     case WM_KILLFOCUS:
3531         if (infoPtr->bIgnoreEditKillFocus)
3532             return TRUE;
3533         break;
3534
3535     case WM_GETDLGCODE:
3536         return DLGC_WANTARROWS | DLGC_WANTALLKEYS;
3537
3538     case WM_KEYDOWN:
3539         if (wParam == (WPARAM)VK_ESCAPE)
3540         {
3541             bCancel = TRUE;
3542             break;
3543         }
3544         else if (wParam == (WPARAM)VK_RETURN)
3545         {
3546             break;
3547         }
3548
3549         /* fall through */
3550     default:
3551         return CallWindowProcW(infoPtr->wpEditOrig, hwnd, uMsg, wParam, lParam);
3552     }
3553
3554     /* Processing TVN_ENDLABELEDIT message could kill the focus       */
3555     /* eg. Using a messagebox                                         */
3556
3557     infoPtr->bIgnoreEditKillFocus = TRUE;
3558     TREEVIEW_EndEditLabelNow(infoPtr, bCancel || !infoPtr->bLabelChanged);
3559     infoPtr->bIgnoreEditKillFocus = FALSE;
3560
3561     return 0;
3562 }
3563
3564
3565 /* should handle edit control messages here */
3566
3567 static LRESULT
3568 TREEVIEW_Command(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
3569 {
3570     TRACE("%x %ld\n", wParam, lParam);
3571
3572     switch (HIWORD(wParam))
3573     {
3574     case EN_UPDATE:
3575         {
3576             /*
3577              * Adjust the edit window size
3578              */
3579             WCHAR buffer[1024];
3580             TREEVIEW_ITEM *editItem = infoPtr->selectedItem;
3581             HDC hdc = GetDC(infoPtr->hwndEdit);
3582             SIZE sz;
3583             int len;
3584             HFONT hFont, hOldFont = 0;
3585
3586             infoPtr->bLabelChanged = TRUE;
3587
3588             len = GetWindowTextW(infoPtr->hwndEdit, buffer, sizeof(buffer));
3589
3590             /* Select font to get the right dimension of the string */
3591             hFont = (HFONT)SendMessageW(infoPtr->hwndEdit, WM_GETFONT, 0, 0);
3592
3593             if (hFont != 0)
3594             {
3595                 hOldFont = SelectObject(hdc, hFont);
3596             }
3597
3598             if (GetTextExtentPoint32W(hdc, buffer, strlenW(buffer), &sz))
3599             {
3600                 TEXTMETRICW textMetric;
3601
3602                 /* Add Extra spacing for the next character */
3603                 GetTextMetricsW(hdc, &textMetric);
3604                 sz.cx += (textMetric.tmMaxCharWidth * 2);
3605
3606                 sz.cx = max(sz.cx, textMetric.tmMaxCharWidth * 3);
3607                 sz.cx = min(sz.cx,
3608                             infoPtr->clientWidth - editItem->textOffset + 2);
3609
3610                 SetWindowPos(infoPtr->hwndEdit,
3611                              HWND_TOP,
3612                              0,
3613                              0,
3614                              sz.cx,
3615                              editItem->rect.bottom - editItem->rect.top + 3,
3616                              SWP_NOMOVE | SWP_DRAWFRAME);
3617             }
3618
3619             if (hFont != 0)
3620             {
3621                 SelectObject(hdc, hOldFont);
3622             }
3623
3624             ReleaseDC(infoPtr->hwnd, hdc);
3625             break;
3626         }
3627
3628     default:
3629         return SendMessageW(infoPtr->hwndNotify, WM_COMMAND, wParam, lParam);
3630     }
3631
3632     return 0;
3633 }
3634
3635 static HWND
3636 TREEVIEW_EditLabel(TREEVIEW_INFO *infoPtr, HTREEITEM hItem)
3637 {
3638     HWND hwnd = infoPtr->hwnd;
3639     HWND hwndEdit;
3640     SIZE sz;
3641     TREEVIEW_ITEM *editItem = hItem;
3642     HINSTANCE hinst = (HINSTANCE)GetWindowLongPtrW(hwnd, GWLP_HINSTANCE);
3643     HDC hdc;
3644     HFONT hOldFont=0;
3645     TEXTMETRICW textMetric;
3646     static const WCHAR EditW[] = {'E','d','i','t',0};
3647
3648     TRACE("%p %p\n", hwnd, hItem);
3649     if (!TREEVIEW_ValidItem(infoPtr, editItem))
3650         return NULL;
3651
3652     if (infoPtr->hwndEdit)
3653         return infoPtr->hwndEdit;
3654
3655     infoPtr->bLabelChanged = FALSE;
3656
3657     /* Make sure that edit item is selected */
3658     TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, hItem, TVC_UNKNOWN);
3659     TREEVIEW_EnsureVisible(infoPtr, hItem, TRUE);
3660
3661     TREEVIEW_UpdateDispInfo(infoPtr, editItem, TVIF_TEXT);
3662
3663     hdc = GetDC(hwnd);
3664     /* Select the font to get appropriate metric dimensions */
3665     if (infoPtr->hFont != 0)
3666     {
3667         hOldFont = SelectObject(hdc, infoPtr->hFont);
3668     }
3669
3670     /* Get string length in pixels */
3671     GetTextExtentPoint32W(hdc, editItem->pszText, strlenW(editItem->pszText),
3672                           &sz);
3673
3674     /* Add Extra spacing for the next character */
3675     GetTextMetricsW(hdc, &textMetric);
3676     sz.cx += (textMetric.tmMaxCharWidth * 2);
3677
3678     sz.cx = max(sz.cx, textMetric.tmMaxCharWidth * 3);
3679     sz.cx = min(sz.cx, infoPtr->clientWidth - editItem->textOffset + 2);
3680
3681     if (infoPtr->hFont != 0)
3682     {
3683         SelectObject(hdc, hOldFont);
3684     }
3685
3686     ReleaseDC(hwnd, hdc);
3687     hwndEdit = CreateWindowExW(WS_EX_LEFT,
3688                                EditW,
3689                                0,
3690                                WS_CHILD | WS_BORDER | ES_AUTOHSCROLL |
3691                                WS_CLIPSIBLINGS | ES_WANTRETURN |
3692                                ES_LEFT, editItem->textOffset - 2,
3693                                editItem->rect.top - 1, sz.cx + 3,
3694                                editItem->rect.bottom -
3695                                editItem->rect.top + 3, hwnd, 0, hinst, 0);
3696 /* FIXME: (HMENU)IDTVEDIT,pcs->hInstance,0); */
3697
3698     infoPtr->hwndEdit = hwndEdit;
3699
3700     /* Get a 2D border. */
3701     SetWindowLongW(hwndEdit, GWL_EXSTYLE,
3702                    GetWindowLongW(hwndEdit, GWL_EXSTYLE) & ~WS_EX_CLIENTEDGE);
3703     SetWindowLongW(hwndEdit, GWL_STYLE,
3704                    GetWindowLongW(hwndEdit, GWL_STYLE) | WS_BORDER);
3705
3706     SendMessageW(hwndEdit, WM_SETFONT,
3707                  (WPARAM)TREEVIEW_FontForItem(infoPtr, editItem), FALSE);
3708
3709     infoPtr->wpEditOrig = (WNDPROC)SetWindowLongPtrW(hwndEdit, GWLP_WNDPROC,
3710                                                   (DWORD_PTR)
3711                                                   TREEVIEW_Edit_SubclassProc);
3712
3713     if (TREEVIEW_BeginLabelEditNotify(infoPtr, editItem))
3714     {
3715         DestroyWindow(hwndEdit);
3716         infoPtr->hwndEdit = 0;
3717         return NULL;
3718     }
3719
3720     infoPtr->selectedItem = hItem;
3721     SetWindowTextW(hwndEdit, editItem->pszText);
3722     SetFocus(hwndEdit);
3723     SendMessageW(hwndEdit, EM_SETSEL, 0, -1);
3724     ShowWindow(hwndEdit, SW_SHOW);
3725
3726     return hwndEdit;
3727 }
3728
3729
3730 static LRESULT
3731 TREEVIEW_EndEditLabelNow(TREEVIEW_INFO *infoPtr, BOOL bCancel)
3732 {
3733     HWND hwnd = infoPtr->hwnd;
3734     TREEVIEW_ITEM *editedItem = infoPtr->selectedItem;
3735     NMTVDISPINFOW tvdi;
3736     BOOL bCommit;
3737     WCHAR tmpText[1024] = { '\0' };
3738     WCHAR *newText = tmpText;
3739     int iLength = 0;
3740
3741     if (!infoPtr->hwndEdit)
3742         return FALSE;
3743
3744     tvdi.hdr.hwndFrom = hwnd;
3745     tvdi.hdr.idFrom = GetWindowLongPtrW(hwnd, GWLP_ID);
3746     tvdi.hdr.code = get_notifycode(infoPtr, TVN_ENDLABELEDITW);
3747     tvdi.item.mask = 0;
3748     tvdi.item.hItem = editedItem;
3749     tvdi.item.state = editedItem->state;
3750     tvdi.item.lParam = editedItem->lParam;
3751
3752     if (!bCancel)
3753     {
3754         if (!infoPtr->bNtfUnicode)
3755             iLength = GetWindowTextA(infoPtr->hwndEdit, (LPSTR)tmpText, 1023);
3756         else
3757             iLength = GetWindowTextW(infoPtr->hwndEdit, tmpText, 1023);
3758
3759         if (iLength >= 1023)
3760         {
3761             ERR("Insufficient space to retrieve new item label\n");
3762         }
3763
3764         tvdi.item.mask = TVIF_TEXT;
3765         tvdi.item.pszText = tmpText;
3766         tvdi.item.cchTextMax = iLength + 1;
3767     }
3768     else
3769     {
3770         tvdi.item.pszText = NULL;
3771         tvdi.item.cchTextMax = 0;
3772     }
3773
3774     bCommit = (BOOL)TREEVIEW_SendRealNotify(infoPtr,
3775                                  (WPARAM)tvdi.hdr.idFrom, (LPARAM)&tvdi);
3776
3777     if (!bCancel && bCommit)    /* Apply the changes */
3778     {
3779         if (!infoPtr->bNtfUnicode)
3780         {
3781             DWORD len = MultiByteToWideChar( CP_ACP, 0, (LPSTR)tmpText, -1, NULL, 0 );
3782             newText = Alloc(len * sizeof(WCHAR));
3783             MultiByteToWideChar( CP_ACP, 0, (LPSTR)tmpText, -1, newText, len );
3784             iLength = len - 1;
3785         }
3786
3787         if (strcmpW(newText, editedItem->pszText) != 0)
3788         {
3789             if (NULL == ReAlloc(editedItem->pszText, iLength + 1))
3790             {
3791                 ERR("OutOfMemory, cannot allocate space for label\n");
3792                 DestroyWindow(infoPtr->hwndEdit);
3793                 infoPtr->hwndEdit = 0;
3794                 return FALSE;
3795             }
3796             else
3797             {
3798                 editedItem->cchTextMax = iLength + 1;
3799                 strcpyW(editedItem->pszText, newText);
3800             }
3801         }
3802         if(newText != tmpText) Free(newText);
3803     }
3804
3805     ShowWindow(infoPtr->hwndEdit, SW_HIDE);
3806     DestroyWindow(infoPtr->hwndEdit);
3807     infoPtr->hwndEdit = 0;
3808     return TRUE;
3809 }
3810
3811 static LRESULT
3812 TREEVIEW_HandleTimer(TREEVIEW_INFO *infoPtr, WPARAM wParam)
3813 {
3814     if (wParam != TV_EDIT_TIMER)
3815     {
3816         ERR("got unknown timer\n");
3817         return 1;
3818     }
3819
3820     KillTimer(infoPtr->hwnd, TV_EDIT_TIMER);
3821     infoPtr->Timer &= ~TV_EDIT_TIMER_SET;
3822
3823     TREEVIEW_EditLabel(infoPtr, infoPtr->selectedItem);
3824
3825     return 0;
3826 }
3827
3828
3829 /* Mouse Tracking/Drag **************************************************/
3830
3831 /***************************************************************************
3832  * This is quite unusual piece of code, but that's how it's implemented in
3833  * Windows.
3834  */
3835 static LRESULT
3836 TREEVIEW_TrackMouse(TREEVIEW_INFO *infoPtr, POINT pt)
3837 {
3838     INT cxDrag = GetSystemMetrics(SM_CXDRAG);
3839     INT cyDrag = GetSystemMetrics(SM_CYDRAG);
3840     RECT r;
3841     MSG msg;
3842
3843     r.top = pt.y - cyDrag;
3844     r.left = pt.x - cxDrag;
3845     r.bottom = pt.y + cyDrag;
3846     r.right = pt.x + cxDrag;
3847
3848     SetCapture(infoPtr->hwnd);
3849
3850     while (1)
3851     {
3852         if (PeekMessageW(&msg, 0, 0, 0, PM_REMOVE | PM_NOYIELD))
3853         {
3854             if (msg.message == WM_MOUSEMOVE)
3855             {
3856                 pt.x = (short)LOWORD(msg.lParam);
3857                 pt.y = (short)HIWORD(msg.lParam);
3858                 if (PtInRect(&r, pt))
3859                     continue;
3860                 else
3861                 {
3862                     ReleaseCapture();
3863                     return 1;
3864                 }
3865             }
3866             else if (msg.message >= WM_LBUTTONDOWN &&
3867                      msg.message <= WM_RBUTTONDBLCLK)
3868             {
3869                 if (msg.message == WM_RBUTTONUP)
3870                     TREEVIEW_RButtonUp(infoPtr, &pt);
3871                 break;
3872             }
3873
3874             DispatchMessageW(&msg);
3875         }
3876
3877         if (GetCapture() != infoPtr->hwnd)
3878             return 0;
3879     }
3880
3881     ReleaseCapture();
3882     return 0;
3883 }
3884
3885
3886 static LRESULT
3887 TREEVIEW_LButtonDoubleClick(TREEVIEW_INFO *infoPtr, LPARAM lParam)
3888 {
3889     TREEVIEW_ITEM *wineItem;
3890     TVHITTESTINFO hit;
3891
3892     TRACE("\n");
3893     SetFocus(infoPtr->hwnd);
3894
3895     if (infoPtr->Timer & TV_EDIT_TIMER_SET)
3896     {
3897         /* If there is pending 'edit label' event - kill it now */
3898         KillTimer(infoPtr->hwnd, TV_EDIT_TIMER);
3899     }
3900
3901     hit.pt.x = (short)LOWORD(lParam);
3902     hit.pt.y = (short)HIWORD(lParam);
3903
3904     wineItem = (TREEVIEW_ITEM *)TREEVIEW_HitTest(infoPtr, &hit);
3905     if (!wineItem)
3906         return 0;
3907     TRACE("item %d\n", TREEVIEW_GetItemIndex(infoPtr, wineItem));
3908
3909     if (TREEVIEW_SendSimpleNotify(infoPtr, NM_DBLCLK) == FALSE)
3910     {                           /* FIXME! */
3911         switch (hit.flags)
3912         {
3913         case TVHT_ONITEMRIGHT:
3914             /* FIXME: we should not have sent NM_DBLCLK in this case. */
3915             break;
3916
3917         case TVHT_ONITEMINDENT:
3918             if (!(infoPtr->dwStyle & TVS_HASLINES))
3919             {
3920                 break;
3921             }
3922             else
3923             {
3924                 int level = hit.pt.x / infoPtr->uIndent;
3925                 if (!(infoPtr->dwStyle & TVS_LINESATROOT)) level++;
3926
3927                 while (wineItem->iLevel > level)
3928                 {
3929                     wineItem = wineItem->parent;
3930                 }
3931
3932                 /* fall through */
3933             }
3934
3935         case TVHT_ONITEMLABEL:
3936         case TVHT_ONITEMICON:
3937         case TVHT_ONITEMBUTTON:
3938             TREEVIEW_Toggle(infoPtr, wineItem, TRUE);
3939             break;
3940
3941         case TVHT_ONITEMSTATEICON:
3942            if (infoPtr->dwStyle & TVS_CHECKBOXES)
3943                TREEVIEW_ToggleItemState(infoPtr, wineItem);
3944            else
3945                TREEVIEW_Toggle(infoPtr, wineItem, TRUE);
3946            break;
3947         }
3948     }
3949     return TRUE;
3950 }
3951
3952
3953 static LRESULT
3954 TREEVIEW_LButtonDown(TREEVIEW_INFO *infoPtr, LPARAM lParam)
3955 {
3956     HWND hwnd = infoPtr->hwnd;
3957     TVHITTESTINFO ht;
3958     BOOL bTrack, bDoLabelEdit;
3959     HTREEITEM tempItem;
3960
3961     /* If Edit control is active - kill it and return.
3962      * The best way to do it is to set focus to itself.
3963      * Edit control subclassed procedure will automatically call
3964      * EndEditLabelNow.
3965      */
3966     if (infoPtr->hwndEdit)
3967     {
3968         SetFocus(hwnd);
3969         return 0;
3970     }
3971
3972     ht.pt.x = (short)LOWORD(lParam);
3973     ht.pt.y = (short)HIWORD(lParam);
3974
3975     TREEVIEW_HitTest(infoPtr, &ht);
3976     TRACE("item %d\n", TREEVIEW_GetItemIndex(infoPtr, ht.hItem));
3977
3978     /* update focusedItem and redraw both items */
3979     if(ht.hItem && (ht.flags & TVHT_ONITEM))
3980     {
3981         infoPtr->focusedItem = ht.hItem;
3982         InvalidateRect(hwnd, &(((HTREEITEM)(ht.hItem))->rect), TRUE);
3983
3984         if(infoPtr->selectedItem)
3985             InvalidateRect(hwnd, &(infoPtr->selectedItem->rect), TRUE);
3986     }
3987
3988     bTrack = (ht.flags & TVHT_ONITEM)
3989         && !(infoPtr->dwStyle & TVS_DISABLEDRAGDROP);
3990
3991     /*
3992      * If the style allows editing and the node is already selected
3993      * and the click occurred on the item label...
3994      */
3995     bDoLabelEdit = (infoPtr->dwStyle & TVS_EDITLABELS) &&
3996         (ht.flags & TVHT_ONITEMLABEL) && (infoPtr->selectedItem == ht.hItem);
3997
3998     /* Send NM_CLICK right away */
3999     if (!bTrack)
4000         if (TREEVIEW_SendSimpleNotify(infoPtr, NM_CLICK))
4001             goto setfocus;
4002
4003     if (ht.flags & TVHT_ONITEMBUTTON)
4004     {
4005         TREEVIEW_Toggle(infoPtr, ht.hItem, TRUE);
4006         goto setfocus;
4007     }
4008     else if (bTrack)
4009     {   /* if TREEVIEW_TrackMouse == 1 dragging occurred and the cursor left the dragged item's rectangle */
4010         if (TREEVIEW_TrackMouse(infoPtr, ht.pt))
4011         {
4012             TREEVIEW_SendTreeviewDnDNotify(infoPtr, TVN_BEGINDRAGW, ht.hItem, ht.pt);
4013             infoPtr->dropItem = ht.hItem;
4014
4015             /* clean up focusedItem as we dragged and won't select this item */
4016             if(infoPtr->focusedItem)
4017             {
4018                 /* refresh the item that was focused */
4019                 tempItem = infoPtr->focusedItem;
4020                 infoPtr->focusedItem = 0;
4021                 InvalidateRect(infoPtr->hwnd, &tempItem->rect, TRUE);
4022
4023                 /* refresh the selected item to return the filled background */
4024                 InvalidateRect(infoPtr->hwnd, &(infoPtr->selectedItem->rect), TRUE);
4025             }
4026
4027             return 0;
4028         }
4029     }
4030
4031     if (bTrack && TREEVIEW_SendSimpleNotify(infoPtr, NM_CLICK))
4032         goto setfocus;
4033
4034     if (bDoLabelEdit)
4035     {
4036         if (infoPtr->Timer & TV_EDIT_TIMER_SET)
4037             KillTimer(hwnd, TV_EDIT_TIMER);
4038
4039         SetTimer(hwnd, TV_EDIT_TIMER, GetDoubleClickTime(), 0);
4040         infoPtr->Timer |= TV_EDIT_TIMER_SET;
4041     }
4042     else if (ht.flags & (TVHT_ONITEMICON|TVHT_ONITEMLABEL)) /* select the item if the hit was inside of the icon or text */
4043     {
4044         /*
4045          * if we are TVS_SINGLEEXPAND then we want this single click to
4046          * do a bunch of things.
4047          */
4048         if((infoPtr->dwStyle & TVS_SINGLEEXPAND) &&
4049           (infoPtr->hwndEdit == 0))
4050         {
4051             TREEVIEW_ITEM *SelItem;
4052
4053             /*
4054              * Send the notification
4055              */
4056             TREEVIEW_SendTreeviewNotify(infoPtr, TVN_SINGLEEXPAND, TVC_UNKNOWN, TVIF_HANDLE | TVIF_PARAM, ht.hItem, 0);
4057
4058             /*
4059              * Close the previous selection all the way to the root
4060              * as long as the new selection is not a child
4061              */
4062             if((infoPtr->selectedItem)
4063                 && (infoPtr->selectedItem != ht.hItem))
4064             {
4065                 BOOL closeit = TRUE;
4066                 SelItem = ht.hItem;
4067
4068                 /* determine if the hitItem is a child of the currently selected item */
4069                 while(closeit && SelItem && TREEVIEW_ValidItem(infoPtr, SelItem) && (SelItem != infoPtr->root))
4070                 {
4071                     closeit = (SelItem != infoPtr->selectedItem);
4072                     SelItem = SelItem->parent;
4073                 }
4074
4075                 if(closeit)
4076                 {
4077                     if(TREEVIEW_ValidItem(infoPtr, infoPtr->selectedItem))
4078                         SelItem = infoPtr->selectedItem;
4079
4080                     while(SelItem && (SelItem != ht.hItem) && TREEVIEW_ValidItem(infoPtr, SelItem) && (SelItem != infoPtr->root))
4081                     {
4082                         TREEVIEW_Collapse(infoPtr, SelItem, FALSE, FALSE);
4083                         SelItem = SelItem->parent;
4084                     }
4085                 }
4086             }
4087
4088             /*
4089              * Expand the current item
4090              */
4091             TREEVIEW_Expand(infoPtr, ht.hItem, TVE_TOGGLE, FALSE);
4092         }
4093
4094         /* Select the current item */
4095         TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, ht.hItem, TVC_BYMOUSE);
4096     }
4097     else if (ht.flags & TVHT_ONITEMSTATEICON)
4098     {
4099         /* TVS_CHECKBOXES requires us to toggle the current state */
4100         if (infoPtr->dwStyle & TVS_CHECKBOXES)
4101             TREEVIEW_ToggleItemState(infoPtr, ht.hItem);
4102     }
4103
4104   setfocus:
4105     SetFocus(hwnd);
4106     return 0;
4107 }
4108
4109
4110 static LRESULT
4111 TREEVIEW_RButtonDown(TREEVIEW_INFO *infoPtr, LPARAM lParam)
4112 {
4113     TVHITTESTINFO ht;
4114
4115     if (infoPtr->hwndEdit)
4116     {
4117         SetFocus(infoPtr->hwnd);
4118         return 0;
4119     }
4120
4121     ht.pt.x = (short)LOWORD(lParam);
4122     ht.pt.y = (short)HIWORD(lParam);
4123
4124     TREEVIEW_HitTest(infoPtr, &ht);
4125
4126     if (TREEVIEW_TrackMouse(infoPtr, ht.pt))
4127     {
4128         if (ht.hItem)
4129         {
4130             TREEVIEW_SendTreeviewDnDNotify(infoPtr, TVN_BEGINRDRAGW, ht.hItem, ht.pt);
4131             infoPtr->dropItem = ht.hItem;
4132         }
4133     }
4134     else
4135     {
4136         SetFocus(infoPtr->hwnd);
4137         TREEVIEW_SendSimpleNotify(infoPtr, NM_RCLICK);
4138     }
4139
4140     return 0;
4141 }
4142
4143 static LRESULT
4144 TREEVIEW_RButtonUp(TREEVIEW_INFO *infoPtr, LPPOINT pPt)
4145 {
4146     return 0;
4147 }
4148
4149
4150 static LRESULT
4151 TREEVIEW_CreateDragImage(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
4152 {
4153     TREEVIEW_ITEM *dragItem = (HTREEITEM)lParam;
4154     INT cx, cy;
4155     HDC hdc, htopdc;
4156     HWND hwtop;
4157     HBITMAP hbmp, hOldbmp;
4158     SIZE size;
4159     RECT rc;
4160     HFONT hOldFont;
4161
4162     TRACE("\n");
4163
4164     if (!(infoPtr->himlNormal))
4165         return 0;
4166
4167     if (!dragItem || !TREEVIEW_ValidItem(infoPtr, dragItem))
4168         return 0;
4169
4170     TREEVIEW_UpdateDispInfo(infoPtr, dragItem, TVIF_TEXT);
4171
4172     hwtop = GetDesktopWindow();
4173     htopdc = GetDC(hwtop);
4174     hdc = CreateCompatibleDC(htopdc);
4175
4176     hOldFont = SelectObject(hdc, infoPtr->hFont);
4177     GetTextExtentPoint32W(hdc, dragItem->pszText, strlenW(dragItem->pszText),
4178                           &size);
4179     TRACE("%d %d %s %d\n", size.cx, size.cy, debugstr_w(dragItem->pszText),
4180           strlenW(dragItem->pszText));
4181     hbmp = CreateCompatibleBitmap(htopdc, size.cx, size.cy);
4182     hOldbmp = SelectObject(hdc, hbmp);
4183
4184     ImageList_GetIconSize(infoPtr->himlNormal, &cx, &cy);
4185     size.cx += cx;
4186     if (cy > size.cy)
4187         size.cy = cy;
4188
4189     infoPtr->dragList = ImageList_Create(size.cx, size.cy, ILC_COLOR, 10, 10);
4190     ImageList_Draw(infoPtr->himlNormal, dragItem->iImage, hdc, 0, 0,
4191                    ILD_NORMAL);
4192
4193 /*
4194  ImageList_GetImageInfo (infoPtr->himlNormal, dragItem->hItem, &iminfo);
4195  ImageList_AddMasked (infoPtr->dragList, iminfo.hbmImage, CLR_DEFAULT);
4196 */
4197
4198 /* draw item text */
4199
4200     SetRect(&rc, cx, 0, size.cx, size.cy);
4201     DrawTextW(hdc, dragItem->pszText, strlenW(dragItem->pszText), &rc,
4202               DT_LEFT);
4203     SelectObject(hdc, hOldFont);
4204     SelectObject(hdc, hOldbmp);
4205
4206     ImageList_Add(infoPtr->dragList, hbmp, 0);
4207
4208     DeleteDC(hdc);
4209     DeleteObject(hbmp);
4210     ReleaseDC(hwtop, htopdc);
4211
4212     return (LRESULT)infoPtr->dragList;
4213 }
4214
4215 /* Selection ************************************************************/
4216
4217 static LRESULT
4218 TREEVIEW_DoSelectItem(TREEVIEW_INFO *infoPtr, INT action, HTREEITEM newSelect,
4219                       INT cause)
4220 {
4221     TREEVIEW_ITEM *prevSelect;
4222     RECT rcFocused;
4223
4224     assert(newSelect == NULL || TREEVIEW_ValidItem(infoPtr, newSelect));
4225
4226     TRACE("Entering item %p (%s), flag %x, cause %x, state %d\n",
4227           newSelect, TREEVIEW_ItemName(newSelect), action, cause,
4228           newSelect ? newSelect->state : 0);
4229
4230     /* reset and redraw focusedItem if focusedItem was set so we don't */
4231     /* have to worry about the previously focused item when we set a new one */
4232     if(infoPtr->focusedItem)
4233     {
4234         rcFocused = (infoPtr->focusedItem)->rect;
4235         infoPtr->focusedItem = 0;
4236         InvalidateRect(infoPtr->hwnd, &rcFocused, TRUE);
4237     }
4238
4239     switch (action)
4240     {
4241     case TVGN_CARET:
4242         prevSelect = infoPtr->selectedItem;
4243
4244         if (prevSelect == newSelect) {
4245             TREEVIEW_EnsureVisible(infoPtr, infoPtr->selectedItem, FALSE);
4246             break;
4247         }
4248
4249         if (TREEVIEW_SendTreeviewNotify(infoPtr,
4250                                         TVN_SELCHANGINGW,
4251                                         cause,
4252                                         TVIF_TEXT | TVIF_HANDLE | TVIF_STATE | TVIF_PARAM,
4253                                         prevSelect,
4254                                         newSelect))
4255             return FALSE;
4256
4257         if (prevSelect)
4258             prevSelect->state &= ~TVIS_SELECTED;
4259         if (newSelect)
4260             newSelect->state |= TVIS_SELECTED;
4261
4262         infoPtr->selectedItem = newSelect;
4263
4264         TREEVIEW_EnsureVisible(infoPtr, infoPtr->selectedItem, FALSE);
4265
4266         if (prevSelect)
4267             TREEVIEW_Invalidate(infoPtr, prevSelect);
4268         if (newSelect)
4269             TREEVIEW_Invalidate(infoPtr, newSelect);
4270
4271         TREEVIEW_SendTreeviewNotify(infoPtr,
4272                                     TVN_SELCHANGEDW,
4273                                     cause,
4274                                     TVIF_TEXT | TVIF_HANDLE | TVIF_STATE | TVIF_PARAM,
4275                                     prevSelect,
4276                                     newSelect);
4277         break;
4278
4279     case TVGN_DROPHILITE:
4280         prevSelect = infoPtr->dropItem;
4281
4282         if (prevSelect)
4283             prevSelect->state &= ~TVIS_DROPHILITED;
4284
4285         infoPtr->dropItem = newSelect;
4286
4287         if (newSelect)
4288             newSelect->state |= TVIS_DROPHILITED;
4289
4290         TREEVIEW_Invalidate(infoPtr, prevSelect);
4291         TREEVIEW_Invalidate(infoPtr, newSelect);
4292         break;
4293
4294     case TVGN_FIRSTVISIBLE:
4295         if (newSelect != NULL)
4296         {
4297             TREEVIEW_EnsureVisible(infoPtr, newSelect, FALSE);
4298             TREEVIEW_SetFirstVisible(infoPtr, newSelect, TRUE);
4299             TREEVIEW_Invalidate(infoPtr, NULL);
4300         }
4301         break;
4302     }
4303
4304     TRACE("Leaving state %d\n", newSelect ? newSelect->state : 0);
4305     return TRUE;
4306 }
4307
4308 /* FIXME: handle NM_KILLFOCUS etc */
4309 static LRESULT
4310 TREEVIEW_SelectItem(TREEVIEW_INFO *infoPtr, INT wParam, HTREEITEM item)
4311 {
4312     if (item != NULL && !TREEVIEW_ValidItem(infoPtr, item))
4313         return FALSE;
4314
4315     TRACE("%p (%s) %d\n", item, TREEVIEW_ItemName(item), wParam);
4316
4317     if (!TREEVIEW_DoSelectItem(infoPtr, wParam, item, TVC_UNKNOWN))
4318         return FALSE;
4319
4320     return TRUE;
4321 }
4322
4323 /*************************************************************************
4324  *              TREEVIEW_ProcessLetterKeys
4325  *
4326  *  Processes keyboard messages generated by pressing the letter keys
4327  *  on the keyboard.
4328  *  What this does is perform a case insensitive search from the
4329  *  current position with the following quirks:
4330  *  - If two chars or more are pressed in quick succession we search
4331  *    for the corresponding string (e.g. 'abc').
4332  *  - If there is a delay we wipe away the current search string and
4333  *    restart with just that char.
4334  *  - If the user keeps pressing the same character, whether slowly or
4335  *    fast, so that the search string is entirely composed of this
4336  *    character ('aaaaa' for instance), then we search for first item
4337  *    that starting with that character.
4338  *  - If the user types the above character in quick succession, then
4339  *    we must also search for the corresponding string ('aaaaa'), and
4340  *    go to that string if there is a match.
4341  *
4342  * RETURNS
4343  *
4344  *  Zero.
4345  *
4346  * BUGS
4347  *
4348  *  - The current implementation has a list of characters it will
4349  *    accept and it ignores averything else. In particular it will
4350  *    ignore accentuated characters which seems to match what
4351  *    Windows does. But I'm not sure it makes sense to follow
4352  *    Windows there.
4353  *  - We don't sound a beep when the search fails.
4354  *  - The search should start from the focused item, not from the selected
4355  *    item. One reason for this is to allow for multiple selections in trees.
4356  *    But currently infoPtr->focusedItem does not seem very usable.
4357  *
4358  * SEE ALSO
4359  *
4360  *  TREEVIEW_ProcessLetterKeys
4361  */
4362 static INT TREEVIEW_ProcessLetterKeys(
4363     HWND hwnd, /* handle to the window */
4364     WPARAM charCode, /* the character code, the actual character */
4365     LPARAM keyData /* key data */
4366     )
4367 {
4368     TREEVIEW_INFO *infoPtr;
4369     HTREEITEM nItem;
4370     HTREEITEM endidx,idx;
4371     TVITEMEXW item;
4372     WCHAR buffer[MAX_PATH];
4373     DWORD timestamp,elapsed;
4374
4375     /* simple parameter checking */
4376     if (!hwnd || !charCode || !keyData)
4377         return 0;
4378
4379     infoPtr=(TREEVIEW_INFO*)GetWindowLongPtrW(hwnd, 0);
4380     if (!infoPtr)
4381         return 0;
4382
4383     /* only allow the valid WM_CHARs through */
4384     if (!isalnum(charCode) &&
4385         charCode != '.' && charCode != '`' && charCode != '!' &&
4386         charCode != '@' && charCode != '#' && charCode != '$' &&
4387         charCode != '%' && charCode != '^' && charCode != '&' &&
4388         charCode != '*' && charCode != '(' && charCode != ')' &&
4389         charCode != '-' && charCode != '_' && charCode != '+' &&
4390         charCode != '=' && charCode != '\\'&& charCode != ']' &&
4391         charCode != '}' && charCode != '[' && charCode != '{' &&
4392         charCode != '/' && charCode != '?' && charCode != '>' &&
4393         charCode != '<' && charCode != ',' && charCode != '~')
4394         return 0;
4395
4396     /* compute how much time elapsed since last keypress */
4397     timestamp = GetTickCount();
4398     if (timestamp > infoPtr->lastKeyPressTimestamp) {
4399         elapsed=timestamp-infoPtr->lastKeyPressTimestamp;
4400     } else {
4401         elapsed=infoPtr->lastKeyPressTimestamp-timestamp;
4402     }
4403
4404     /* update the search parameters */
4405     infoPtr->lastKeyPressTimestamp=timestamp;
4406     if (elapsed < KEY_DELAY) {
4407         if (infoPtr->nSearchParamLength < sizeof(infoPtr->szSearchParam) / sizeof(WCHAR)) {
4408             infoPtr->szSearchParam[infoPtr->nSearchParamLength++]=charCode;
4409         }
4410         if (infoPtr->charCode != charCode) {
4411             infoPtr->charCode=charCode=0;
4412         }
4413     } else {
4414         infoPtr->charCode=charCode;
4415         infoPtr->szSearchParam[0]=charCode;
4416         infoPtr->nSearchParamLength=1;
4417         /* Redundant with the 1 char string */
4418         charCode=0;
4419     }
4420
4421     /* and search from the current position */
4422     nItem=NULL;
4423     if (infoPtr->selectedItem != NULL) {
4424         endidx=infoPtr->selectedItem;
4425         /* if looking for single character match,
4426          * then we must always move forward
4427          */
4428         if (infoPtr->nSearchParamLength == 1)
4429             idx=TREEVIEW_GetNextListItem(infoPtr,endidx);
4430         else
4431             idx=endidx;
4432     } else {
4433         endidx=NULL;
4434         idx=infoPtr->root->firstChild;
4435     }
4436     do {
4437         /* At the end point, sort out wrapping */
4438         if (idx == NULL) {
4439
4440             /* If endidx is null, stop at the last item (ie top to bottom) */
4441             if (endidx == NULL)
4442                 break;
4443
4444             /* Otherwise, start again at the very beginning */
4445             idx=infoPtr->root->firstChild;
4446
4447             /* But if we are stopping on the first child, end now! */
4448             if (idx == endidx) break;
4449         }
4450
4451         /* get item */
4452         ZeroMemory(&item, sizeof(item));
4453         item.mask = TVIF_TEXT;
4454         item.hItem = idx;
4455         item.pszText = buffer;
4456         item.cchTextMax = sizeof(buffer);
4457         TREEVIEW_GetItemT( infoPtr, &item, TRUE );
4458
4459         /* check for a match */
4460         if (strncmpiW(item.pszText,infoPtr->szSearchParam,infoPtr->nSearchParamLength) == 0) {
4461             nItem=idx;
4462             break;
4463         } else if ( (charCode != 0) && (nItem == NULL) &&
4464                     (nItem != infoPtr->selectedItem) &&
4465                     (strncmpiW(item.pszText,infoPtr->szSearchParam,1) == 0) ) {
4466             /* This would work but we must keep looking for a longer match */
4467             nItem=idx;
4468         }
4469         idx=TREEVIEW_GetNextListItem(infoPtr,idx);
4470     } while (idx != endidx);
4471
4472     if (nItem != NULL) {
4473         if (TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, nItem, TVC_BYKEYBOARD)) {
4474             TREEVIEW_EnsureVisible(infoPtr, nItem, FALSE);
4475         }
4476     }
4477
4478     return 0;
4479 }
4480
4481 /* Scrolling ************************************************************/
4482
4483 static LRESULT
4484 TREEVIEW_EnsureVisible(TREEVIEW_INFO *infoPtr, HTREEITEM item, BOOL bHScroll)
4485 {
4486     int viscount;
4487     BOOL hasFirstVisible = infoPtr->firstVisible != NULL;
4488     HTREEITEM newFirstVisible = NULL;
4489     int visible_pos = -1;
4490
4491     if (!TREEVIEW_ValidItem(infoPtr, item))
4492         return FALSE;
4493
4494     if (!ISVISIBLE(item))
4495     {
4496         /* Expand parents as necessary. */
4497         HTREEITEM parent;
4498
4499         /* see if we are trying to ensure that root is vislble */
4500         if((item != infoPtr->root) && TREEVIEW_ValidItem(infoPtr, item))
4501           parent = item->parent;
4502         else
4503           parent = item; /* this item is the topmost item */
4504
4505         while (parent != infoPtr->root)
4506         {
4507             if (!(parent->state & TVIS_EXPANDED))
4508                 TREEVIEW_Expand(infoPtr, parent, FALSE, FALSE);
4509
4510             parent = parent->parent;
4511         }
4512     }
4513
4514     viscount = TREEVIEW_GetVisibleCount(infoPtr);
4515
4516     TRACE("%p (%s) %d - %d viscount(%d)\n", item, TREEVIEW_ItemName(item), item->visibleOrder,
4517         hasFirstVisible ? infoPtr->firstVisible->visibleOrder : -1, viscount);
4518
4519     if (hasFirstVisible)
4520         visible_pos = item->visibleOrder - infoPtr->firstVisible->visibleOrder;
4521
4522     if (visible_pos < 0)
4523     {
4524         /* item is before the start of the list: put it at the top. */
4525         newFirstVisible = item;
4526     }
4527     else if (visible_pos >= viscount
4528              /* Sometimes, before we are displayed, GVC is 0, causing us to
4529               * spuriously scroll up. */
4530              && visible_pos > 0 && !(infoPtr->dwStyle & TVS_NOSCROLL) )
4531     {
4532         /* item is past the end of the list. */
4533         int scroll = visible_pos - viscount;
4534
4535         newFirstVisible = TREEVIEW_GetListItem(infoPtr, infoPtr->firstVisible,
4536                                                scroll + 1);
4537     }
4538
4539     if (bHScroll)
4540     {
4541         /* Scroll window so item's text is visible as much as possible */
4542         /* Calculation of amount of extra space is taken from EditLabel code */
4543         INT pos, x;
4544         TEXTMETRICW textMetric;
4545         HDC hdc = GetWindowDC(infoPtr->hwnd);
4546
4547         x = item->textWidth;
4548
4549         GetTextMetricsW(hdc, &textMetric);
4550         ReleaseDC(infoPtr->hwnd, hdc);
4551
4552         x += (textMetric.tmMaxCharWidth * 2);
4553         x = max(x, textMetric.tmMaxCharWidth * 3);
4554
4555         if (item->textOffset < 0)
4556            pos = item->textOffset;
4557         else if (item->textOffset + x > infoPtr->clientWidth)
4558         {
4559            if (x > infoPtr->clientWidth)
4560               pos = item->textOffset;
4561            else
4562               pos = item->textOffset + x - infoPtr->clientWidth;
4563         }
4564         else
4565            pos = 0;
4566
4567         TREEVIEW_HScroll(infoPtr, MAKEWPARAM(SB_THUMBPOSITION, infoPtr->scrollX + pos));
4568     }
4569
4570     if (newFirstVisible != NULL && newFirstVisible != infoPtr->firstVisible)
4571     {
4572         TREEVIEW_SetFirstVisible(infoPtr, newFirstVisible, TRUE);
4573
4574         return TRUE;
4575     }
4576
4577     return FALSE;
4578 }
4579
4580 static VOID
4581 TREEVIEW_SetFirstVisible(TREEVIEW_INFO *infoPtr,
4582                          TREEVIEW_ITEM *newFirstVisible,
4583                          BOOL bUpdateScrollPos)
4584 {
4585     int gap_size;
4586
4587     TRACE("%p: %s\n", newFirstVisible, TREEVIEW_ItemName(newFirstVisible));
4588
4589     if (newFirstVisible != NULL)
4590     {
4591         /* Prevent an empty gap from appearing at the bottom... */
4592         gap_size = TREEVIEW_GetVisibleCount(infoPtr)
4593             - infoPtr->maxVisibleOrder + newFirstVisible->visibleOrder;
4594
4595         if (gap_size > 0)
4596         {
4597             newFirstVisible = TREEVIEW_GetListItem(infoPtr, newFirstVisible,
4598                                                    -gap_size);
4599
4600             /* ... unless we just don't have enough items. */
4601             if (newFirstVisible == NULL)
4602                 newFirstVisible = infoPtr->root->firstChild;
4603         }
4604     }
4605
4606     if (infoPtr->firstVisible != newFirstVisible)
4607     {
4608         if (infoPtr->firstVisible == NULL || newFirstVisible == NULL)
4609         {
4610             infoPtr->firstVisible = newFirstVisible;
4611             TREEVIEW_Invalidate(infoPtr, NULL);
4612         }
4613         else
4614         {
4615             TREEVIEW_ITEM *item;
4616             int scroll = infoPtr->uItemHeight *
4617                          (infoPtr->firstVisible->visibleOrder
4618                           - newFirstVisible->visibleOrder);
4619
4620             infoPtr->firstVisible = newFirstVisible;
4621
4622             for (item = infoPtr->root->firstChild; item != NULL;
4623                  item = TREEVIEW_GetNextListItem(infoPtr, item))
4624             {
4625                item->rect.top += scroll;
4626                item->rect.bottom += scroll;
4627             }
4628
4629             if (bUpdateScrollPos)
4630                 SetScrollPos(infoPtr->hwnd, SB_VERT,
4631                               newFirstVisible->visibleOrder, TRUE);
4632
4633             ScrollWindowEx(infoPtr->hwnd, 0, scroll, NULL, NULL, NULL, NULL, SW_ERASE | SW_INVALIDATE);
4634         }
4635     }
4636 }
4637
4638 /************************************************************************
4639  * VScroll is always in units of visible items. i.e. we always have a
4640  * visible item aligned to the top of the control. (Unless we have no
4641  * items at all.)
4642  */
4643 static LRESULT
4644 TREEVIEW_VScroll(TREEVIEW_INFO *infoPtr, WPARAM wParam)
4645 {
4646     TREEVIEW_ITEM *oldFirstVisible = infoPtr->firstVisible;
4647     TREEVIEW_ITEM *newFirstVisible = NULL;
4648
4649     int nScrollCode = LOWORD(wParam);
4650
4651     TRACE("wp %x\n", wParam);
4652
4653     if (!(infoPtr->uInternalStatus & TV_VSCROLL))
4654         return 0;
4655
4656     if (!oldFirstVisible)
4657     {
4658         assert(infoPtr->root->firstChild == NULL);
4659         return 0;
4660     }
4661
4662     switch (nScrollCode)
4663     {
4664     case SB_TOP:
4665         newFirstVisible = infoPtr->root->firstChild;
4666         break;
4667
4668     case SB_BOTTOM:
4669         newFirstVisible = TREEVIEW_GetLastListItem(infoPtr, infoPtr->root);
4670         break;
4671
4672     case SB_LINEUP:
4673         newFirstVisible = TREEVIEW_GetPrevListItem(infoPtr, oldFirstVisible);
4674         break;
4675
4676     case SB_LINEDOWN:
4677         newFirstVisible = TREEVIEW_GetNextListItem(infoPtr, oldFirstVisible);
4678         break;
4679
4680     case SB_PAGEUP:
4681         newFirstVisible = TREEVIEW_GetListItem(infoPtr, oldFirstVisible,
4682                                                -max(1, TREEVIEW_GetVisibleCount(infoPtr)));
4683         break;
4684
4685     case SB_PAGEDOWN:
4686         newFirstVisible = TREEVIEW_GetListItem(infoPtr, oldFirstVisible,
4687                                                max(1, TREEVIEW_GetVisibleCount(infoPtr)));
4688         break;
4689
4690     case SB_THUMBTRACK:
4691     case SB_THUMBPOSITION:
4692         newFirstVisible = TREEVIEW_GetListItem(infoPtr,
4693                                                infoPtr->root->firstChild,
4694                                                (LONG)(SHORT)HIWORD(wParam));
4695         break;
4696
4697     case SB_ENDSCROLL:
4698         return 0;
4699     }
4700
4701     if (newFirstVisible != NULL)
4702     {
4703         if (newFirstVisible != oldFirstVisible)
4704             TREEVIEW_SetFirstVisible(infoPtr, newFirstVisible,
4705                                   nScrollCode != SB_THUMBTRACK);
4706         else if (nScrollCode == SB_THUMBPOSITION)
4707             SetScrollPos(infoPtr->hwnd, SB_VERT,
4708                          newFirstVisible->visibleOrder, TRUE);
4709     }
4710
4711     return 0;
4712 }
4713
4714 static LRESULT
4715 TREEVIEW_HScroll(TREEVIEW_INFO *infoPtr, WPARAM wParam)
4716 {
4717     int maxWidth;
4718     int scrollX = infoPtr->scrollX;
4719     int nScrollCode = LOWORD(wParam);
4720
4721     TRACE("wp %x\n", wParam);
4722
4723     if (!(infoPtr->uInternalStatus & TV_HSCROLL))
4724         return FALSE;
4725
4726     maxWidth = infoPtr->treeWidth - infoPtr->clientWidth;
4727     /* shall never occur */
4728     if (maxWidth <= 0)
4729     {
4730        scrollX = 0;
4731        goto scroll;
4732     }
4733
4734     switch (nScrollCode)
4735     {
4736     case SB_LINELEFT:
4737         scrollX -= infoPtr->uItemHeight;
4738         break;
4739     case SB_LINERIGHT:
4740         scrollX += infoPtr->uItemHeight;
4741         break;
4742     case SB_PAGELEFT:
4743         scrollX -= infoPtr->clientWidth;
4744         break;
4745     case SB_PAGERIGHT:
4746         scrollX += infoPtr->clientWidth;
4747         break;
4748
4749     case SB_THUMBTRACK:
4750     case SB_THUMBPOSITION:
4751         scrollX = (int)(SHORT)HIWORD(wParam);
4752         break;
4753
4754     case SB_ENDSCROLL:
4755        return 0;
4756     }
4757
4758     if (scrollX > maxWidth)
4759         scrollX = maxWidth;
4760     else if (scrollX < 0)
4761         scrollX = 0;
4762
4763 scroll:
4764     if (scrollX != infoPtr->scrollX)
4765     {
4766         TREEVIEW_ITEM *item;
4767         LONG scroll_pixels = infoPtr->scrollX - scrollX;
4768
4769         for (item = infoPtr->root->firstChild; item != NULL;
4770              item = TREEVIEW_GetNextListItem(infoPtr, item))
4771         {
4772            item->linesOffset += scroll_pixels;
4773            item->stateOffset += scroll_pixels;
4774            item->imageOffset += scroll_pixels;
4775            item->textOffset  += scroll_pixels;
4776         }
4777
4778         ScrollWindow(infoPtr->hwnd, scroll_pixels, 0, NULL, NULL);
4779         infoPtr->scrollX = scrollX;
4780         UpdateWindow(infoPtr->hwnd);
4781     }
4782
4783     if (nScrollCode != SB_THUMBTRACK)
4784        SetScrollPos(infoPtr->hwnd, SB_HORZ, scrollX, TRUE);
4785
4786     return 0;
4787 }
4788
4789 static LRESULT
4790 TREEVIEW_MouseWheel(TREEVIEW_INFO *infoPtr, WPARAM wParam)
4791 {
4792     short gcWheelDelta;
4793     UINT pulScrollLines = 3;
4794
4795     if (infoPtr->firstVisible == NULL)
4796         return TRUE;
4797
4798     SystemParametersInfoW(SPI_GETWHEELSCROLLLINES, 0, &pulScrollLines, 0);
4799
4800     gcWheelDelta = -(short)HIWORD(wParam);
4801     pulScrollLines *= (gcWheelDelta / WHEEL_DELTA);
4802
4803     if (abs(gcWheelDelta) >= WHEEL_DELTA && pulScrollLines)
4804     {
4805         int newDy = infoPtr->firstVisible->visibleOrder + pulScrollLines;
4806         int maxDy = infoPtr->maxVisibleOrder;
4807
4808         if (newDy > maxDy)
4809             newDy = maxDy;
4810
4811         if (newDy < 0)
4812             newDy = 0;
4813
4814         TREEVIEW_VScroll(infoPtr, MAKEWPARAM(SB_THUMBPOSITION, newDy));
4815     }
4816     return TRUE;
4817 }
4818
4819 /* Create/Destroy *******************************************************/
4820
4821 static LRESULT
4822 TREEVIEW_Create(HWND hwnd, const CREATESTRUCTW *lpcs)
4823 {
4824     RECT rcClient;
4825     TREEVIEW_INFO *infoPtr;
4826     LOGFONTW lf;
4827
4828     TRACE("wnd %p, style %x\n", hwnd, GetWindowLongW(hwnd, GWL_STYLE));
4829
4830     infoPtr = (TREEVIEW_INFO *)Alloc(sizeof(TREEVIEW_INFO));
4831
4832     if (infoPtr == NULL)
4833     {
4834         ERR("could not allocate info memory!\n");
4835         return 0;
4836     }
4837
4838     SetWindowLongPtrW(hwnd, 0, (DWORD_PTR)infoPtr);
4839
4840     infoPtr->hwnd = hwnd;
4841     infoPtr->dwStyle = GetWindowLongW(hwnd, GWL_STYLE);
4842     infoPtr->Timer = 0;
4843     infoPtr->uNumItems = 0;
4844     infoPtr->cdmode = 0;
4845     infoPtr->uScrollTime = 300; /* milliseconds */
4846     infoPtr->bRedraw = TRUE;
4847
4848     GetClientRect(hwnd, &rcClient);
4849
4850     /* No scroll bars yet. */
4851     infoPtr->clientWidth = rcClient.right;
4852     infoPtr->clientHeight = rcClient.bottom;
4853     infoPtr->uInternalStatus = 0;
4854
4855     infoPtr->treeWidth = 0;
4856     infoPtr->treeHeight = 0;
4857
4858     infoPtr->uIndent = MINIMUM_INDENT;
4859     infoPtr->selectedItem = 0;
4860     infoPtr->focusedItem = 0;
4861     infoPtr->hotItem = 0;
4862     infoPtr->firstVisible = 0;
4863     infoPtr->maxVisibleOrder = 0;
4864     infoPtr->dropItem = 0;
4865     infoPtr->insertMarkItem = 0;
4866     infoPtr->insertBeforeorAfter = 0;
4867     /* dragList */
4868
4869     infoPtr->scrollX = 0;
4870
4871     infoPtr->clrBk = GetSysColor(COLOR_WINDOW);
4872     infoPtr->clrText = -1;      /* use system color */
4873     infoPtr->clrLine = RGB(128, 128, 128);
4874     infoPtr->clrInsertMark = GetSysColor(COLOR_BTNTEXT);
4875
4876     /* hwndToolTip */
4877
4878     infoPtr->hwndEdit = 0;
4879     infoPtr->wpEditOrig = NULL;
4880     infoPtr->bIgnoreEditKillFocus = FALSE;
4881     infoPtr->bLabelChanged = FALSE;
4882
4883     infoPtr->himlNormal = NULL;
4884     infoPtr->himlState = NULL;
4885     infoPtr->normalImageWidth = 0;
4886     infoPtr->normalImageHeight = 0;
4887     infoPtr->stateImageWidth = 0;
4888     infoPtr->stateImageHeight = 0;
4889
4890     infoPtr->items = DPA_Create(16);
4891
4892     SystemParametersInfoW(SPI_GETICONTITLELOGFONT, sizeof(lf), &lf, 0);
4893     infoPtr->hFont = infoPtr->hDefaultFont = CreateFontIndirectW(&lf);
4894     infoPtr->hBoldFont = TREEVIEW_CreateBoldFont(infoPtr->hFont);
4895     infoPtr->hUnderlineFont = TREEVIEW_CreateUnderlineFont(infoPtr->hFont);
4896     infoPtr->hcurHand = LoadCursorW(NULL, (LPWSTR)IDC_HAND);
4897
4898     infoPtr->uItemHeight = TREEVIEW_NaturalHeight(infoPtr);
4899
4900     infoPtr->root = TREEVIEW_AllocateItem(infoPtr);
4901     infoPtr->root->state = TVIS_EXPANDED;
4902     infoPtr->root->iLevel = -1;
4903     infoPtr->root->visibleOrder = -1;
4904
4905     infoPtr->hwndNotify = lpcs->hwndParent;
4906 #if 0
4907     infoPtr->bTransparent = ( GetWindowLongW( hwnd, GWL_STYLE) & TBSTYLE_FLAT);
4908 #endif
4909
4910     infoPtr->hwndToolTip = 0;
4911
4912     infoPtr->bNtfUnicode = IsWindowUnicode (hwnd);
4913
4914     /* Determine what type of notify should be issued */
4915     /* sets infoPtr->bNtfUnicode */
4916     TREEVIEW_NotifyFormat(infoPtr, infoPtr->hwndNotify, NF_REQUERY);
4917
4918     if (!(infoPtr->dwStyle & TVS_NOTOOLTIPS))
4919         infoPtr->hwndToolTip = COMCTL32_CreateToolTip(hwnd);
4920
4921     if (infoPtr->dwStyle & TVS_CHECKBOXES)
4922     {
4923         RECT rc;
4924         HBITMAP hbm, hbmOld;
4925         HDC hdc,hdcScreen;
4926         int nIndex;
4927
4928         infoPtr->himlState =
4929             ImageList_Create(16, 16, ILC_COLOR | ILC_MASK, 3, 0);
4930
4931         hdcScreen = GetDC(0);
4932
4933         /* Create a coloured bitmap compatible with the screen depth
4934            because checkboxes are not black&white */
4935         hdc = CreateCompatibleDC(hdcScreen);
4936         hbm = CreateCompatibleBitmap(hdcScreen, 48, 16);
4937         hbmOld = SelectObject(hdc, hbm);
4938
4939         rc.left  = 0;   rc.top    = 0;
4940         rc.right = 48;  rc.bottom = 16;
4941         FillRect(hdc, &rc, (HBRUSH)(COLOR_WINDOW+1));
4942
4943         rc.left  = 18;   rc.top    = 2;
4944         rc.right = 30;   rc.bottom = 14;
4945         DrawFrameControl(hdc, &rc, DFC_BUTTON,
4946                           DFCS_BUTTONCHECK|DFCS_FLAT);
4947
4948         rc.left  = 34;   rc.right  = 46;
4949         DrawFrameControl(hdc, &rc, DFC_BUTTON,
4950                           DFCS_BUTTONCHECK|DFCS_FLAT|DFCS_CHECKED);
4951
4952         SelectObject(hdc, hbmOld);
4953         nIndex = ImageList_AddMasked(infoPtr->himlState, hbm,
4954                                       GetSysColor(COLOR_WINDOW));
4955         TRACE("checkbox index %d\n", nIndex);
4956
4957         DeleteObject(hbm);
4958         DeleteDC(hdc);
4959         ReleaseDC(0, hdcScreen);
4960
4961         infoPtr->stateImageWidth = 16;
4962         infoPtr->stateImageHeight = 16;
4963     }
4964
4965     /* Make sure actual scrollbar state is consistent with uInternalStatus */
4966     ShowScrollBar(hwnd, SB_VERT, FALSE);
4967     ShowScrollBar(hwnd, SB_HORZ, FALSE);
4968
4969     OpenThemeData (hwnd, themeClass);
4970
4971     return 0;
4972 }
4973
4974
4975 static LRESULT
4976 TREEVIEW_Destroy(TREEVIEW_INFO *infoPtr)
4977 {
4978     TRACE("\n");
4979
4980     TREEVIEW_RemoveTree(infoPtr);
4981
4982     /* tool tip is automatically destroyed: we are its owner */
4983
4984     /* Restore original wndproc */
4985     if (infoPtr->hwndEdit)
4986         SetWindowLongPtrW(infoPtr->hwndEdit, GWLP_WNDPROC,
4987                        (DWORD_PTR)infoPtr->wpEditOrig);
4988
4989     CloseThemeData (GetWindowTheme (infoPtr->hwnd));
4990
4991     /* Deassociate treeview from the window before doing anything drastic. */
4992     SetWindowLongPtrW(infoPtr->hwnd, 0, (DWORD_PTR)NULL);
4993
4994
4995     DeleteObject(infoPtr->hDefaultFont);
4996     DeleteObject(infoPtr->hBoldFont);
4997     DeleteObject(infoPtr->hUnderlineFont);
4998     Free(infoPtr);
4999
5000     return 0;
5001 }
5002
5003 /* Miscellaneous Messages ***********************************************/
5004
5005 static LRESULT
5006 TREEVIEW_ScrollKeyDown(TREEVIEW_INFO *infoPtr, WPARAM key)
5007 {
5008     static const struct
5009     {
5010         unsigned char code;
5011     }
5012     scroll[] =
5013     {
5014 #define SCROLL_ENTRY(dir, code) { ((dir) << 7) | (code) }
5015         SCROLL_ENTRY(SB_VERT, SB_PAGEUP),       /* VK_PRIOR */
5016         SCROLL_ENTRY(SB_VERT, SB_PAGEDOWN),     /* VK_NEXT */
5017         SCROLL_ENTRY(SB_VERT, SB_BOTTOM),       /* VK_END */
5018         SCROLL_ENTRY(SB_VERT, SB_TOP),          /* VK_HOME */
5019         SCROLL_ENTRY(SB_HORZ, SB_LINEUP),       /* VK_LEFT */
5020         SCROLL_ENTRY(SB_VERT, SB_LINEUP),       /* VK_UP */
5021         SCROLL_ENTRY(SB_HORZ, SB_LINEDOWN),     /* VK_RIGHT */
5022         SCROLL_ENTRY(SB_VERT, SB_LINEDOWN)      /* VK_DOWN */
5023 #undef SCROLL_ENTRY
5024     };
5025
5026     if (key >= VK_PRIOR && key <= VK_DOWN)
5027     {
5028         unsigned char code = scroll[key - VK_PRIOR].code;
5029
5030         (((code & (1 << 7)) == (SB_HORZ << 7))
5031          ? TREEVIEW_HScroll
5032          : TREEVIEW_VScroll)(infoPtr, code & 0x7F);
5033     }
5034
5035     return 0;
5036 }
5037
5038 /************************************************************************
5039  *        TREEVIEW_KeyDown
5040  *
5041  * VK_UP       Move selection to the previous non-hidden item.
5042  * VK_DOWN     Move selection to the next non-hidden item.
5043  * VK_HOME     Move selection to the first item.
5044  * VK_END      Move selection to the last item.
5045  * VK_LEFT     If expanded then collapse, otherwise move to parent.
5046  * VK_RIGHT    If collapsed then expand, otherwise move to first child.
5047  * VK_ADD      Expand.
5048  * VK_SUBTRACT Collapse.
5049  * VK_MULTIPLY Expand all.
5050  * VK_PRIOR    Move up GetVisibleCount items.
5051  * VK_NEXT     Move down GetVisibleCount items.
5052  * VK_BACK     Move to parent.
5053  * CTRL-Left,Right,Up,Down,PgUp,PgDown,Home,End: Scroll without changing selection
5054  */
5055 static LRESULT
5056 TREEVIEW_KeyDown(TREEVIEW_INFO *infoPtr, WPARAM wParam)
5057 {
5058     /* If it is non-NULL and different, it will be selected and visible. */
5059     TREEVIEW_ITEM *newSelection = NULL;
5060
5061     TREEVIEW_ITEM *prevItem = infoPtr->selectedItem;
5062
5063     TRACE("%x\n", wParam);
5064
5065     if (prevItem == NULL)
5066         return FALSE;
5067
5068     if (GetAsyncKeyState(VK_CONTROL) & 0x8000)
5069         return TREEVIEW_ScrollKeyDown(infoPtr, wParam);
5070
5071     switch (wParam)
5072     {
5073     case VK_UP:
5074         newSelection = TREEVIEW_GetPrevListItem(infoPtr, prevItem);
5075         if (!newSelection)
5076             newSelection = infoPtr->root->firstChild;
5077         break;
5078
5079     case VK_DOWN:
5080         newSelection = TREEVIEW_GetNextListItem(infoPtr, prevItem);
5081         break;
5082
5083     case VK_HOME:
5084         newSelection = infoPtr->root->firstChild;
5085         break;
5086
5087     case VK_END:
5088         newSelection = TREEVIEW_GetLastListItem(infoPtr, infoPtr->root);
5089         break;
5090
5091     case VK_LEFT:
5092         if (prevItem->state & TVIS_EXPANDED)
5093         {
5094             TREEVIEW_Collapse(infoPtr, prevItem, FALSE, TRUE);
5095         }
5096         else if (prevItem->parent != infoPtr->root)
5097         {
5098             newSelection = prevItem->parent;
5099         }
5100         break;
5101
5102     case VK_RIGHT:
5103         if (TREEVIEW_HasChildren(infoPtr, prevItem))
5104         {
5105             if (!(prevItem->state & TVIS_EXPANDED))
5106                 TREEVIEW_Expand(infoPtr, prevItem, FALSE, TRUE);
5107             else
5108             {
5109                 newSelection = prevItem->firstChild;
5110             }
5111         }
5112
5113         break;
5114
5115     case VK_MULTIPLY:
5116         TREEVIEW_ExpandAll(infoPtr, prevItem);
5117         break;
5118
5119     case VK_ADD:
5120         if (!(prevItem->state & TVIS_EXPANDED))
5121             TREEVIEW_Expand(infoPtr, prevItem, FALSE, TRUE);
5122         break;
5123
5124     case VK_SUBTRACT:
5125         if (prevItem->state & TVIS_EXPANDED)
5126             TREEVIEW_Collapse(infoPtr, prevItem, FALSE, TRUE);
5127         break;
5128
5129     case VK_PRIOR:
5130         newSelection
5131             = TREEVIEW_GetListItem(infoPtr, prevItem,
5132                                    -TREEVIEW_GetVisibleCount(infoPtr));
5133         break;
5134
5135     case VK_NEXT:
5136         newSelection
5137             = TREEVIEW_GetListItem(infoPtr, prevItem,
5138                                    TREEVIEW_GetVisibleCount(infoPtr));
5139         break;
5140
5141     case VK_BACK:
5142         newSelection = prevItem->parent;
5143         if (newSelection == infoPtr->root)
5144             newSelection = NULL;
5145         break;
5146
5147     case VK_SPACE:
5148         if (infoPtr->dwStyle & TVS_CHECKBOXES)
5149             TREEVIEW_ToggleItemState(infoPtr, prevItem);
5150         break;
5151     }
5152
5153     if (newSelection && newSelection != prevItem)
5154     {
5155         if (TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, newSelection,
5156                                   TVC_BYKEYBOARD))
5157         {
5158             TREEVIEW_EnsureVisible(infoPtr, newSelection, FALSE);
5159         }
5160     }
5161
5162     return FALSE;
5163 }
5164
5165 static LRESULT
5166 TREEVIEW_MouseLeave (TREEVIEW_INFO * infoPtr)
5167 {
5168     if (infoPtr->hotItem)
5169     {
5170         /* remove hot effect from item */
5171         InvalidateRect(infoPtr->hwnd, &infoPtr->hotItem->rect, TRUE);
5172         infoPtr->hotItem = NULL;
5173     }
5174     return 0;
5175 }
5176
5177 static LRESULT
5178 TREEVIEW_MouseMove (TREEVIEW_INFO * infoPtr, WPARAM wParam, LPARAM lParam)
5179 {
5180     POINT pt;
5181     TRACKMOUSEEVENT trackinfo;
5182     TREEVIEW_ITEM * item;
5183
5184     /* fill in the TRACKMOUSEEVENT struct */
5185     trackinfo.cbSize = sizeof(TRACKMOUSEEVENT);
5186     trackinfo.dwFlags = TME_QUERY;
5187     trackinfo.hwndTrack = infoPtr->hwnd;
5188     trackinfo.dwHoverTime = HOVER_DEFAULT;
5189
5190     /* call _TrackMouseEvent to see if we are currently tracking for this hwnd */
5191     _TrackMouseEvent(&trackinfo);
5192
5193     /* Make sure tracking is enabled so we receive a WM_MOUSELEAVE message */
5194     if(!(trackinfo.dwFlags & TME_LEAVE))
5195     {
5196         trackinfo.dwFlags = TME_LEAVE; /* notify upon leaving */
5197
5198         /* call TRACKMOUSEEVENT so we receive a WM_MOUSELEAVE message */
5199         /* and can properly deactivate the hot item */
5200         _TrackMouseEvent(&trackinfo);
5201     }
5202
5203     pt.x = (short)LOWORD(lParam);
5204     pt.y = (short)HIWORD(lParam);
5205
5206     item = TREEVIEW_HitTestPoint(infoPtr, pt);
5207
5208     if (item != infoPtr->hotItem)
5209     {
5210         /* redraw old hot item */
5211         if (infoPtr->hotItem)
5212             InvalidateRect(infoPtr->hwnd, &infoPtr->hotItem->rect, TRUE);
5213         infoPtr->hotItem = item;
5214         /* redraw new hot item */
5215         if (infoPtr->hotItem)
5216             InvalidateRect(infoPtr->hwnd, &infoPtr->hotItem->rect, TRUE);
5217     }
5218
5219     return 0;
5220 }
5221
5222 /* Draw themed border */
5223 static BOOL nc_paint (TREEVIEW_INFO *infoPtr, HRGN region)
5224 {
5225     HTHEME theme = GetWindowTheme (infoPtr->hwnd);
5226     HDC dc;
5227     RECT r;
5228     HRGN cliprgn;
5229     int cxEdge = GetSystemMetrics (SM_CXEDGE),
5230         cyEdge = GetSystemMetrics (SM_CYEDGE);
5231
5232     if (!theme) return FALSE;
5233
5234     GetWindowRect(infoPtr->hwnd, &r);
5235
5236     cliprgn = CreateRectRgn (r.left + cxEdge, r.top + cyEdge,
5237         r.right - cxEdge, r.bottom - cyEdge);
5238     if (region != (HRGN)1)
5239         CombineRgn (cliprgn, cliprgn, region, RGN_AND);
5240     OffsetRect(&r, -r.left, -r.top);
5241
5242     dc = GetDCEx(infoPtr->hwnd, region, DCX_WINDOW|DCX_INTERSECTRGN);
5243     OffsetRect(&r, -r.left, -r.top);
5244
5245     if (IsThemeBackgroundPartiallyTransparent (theme, 0, 0))
5246         DrawThemeParentBackground(infoPtr->hwnd, dc, &r);
5247     DrawThemeBackground (theme, dc, 0, 0, &r, 0);
5248     ReleaseDC(infoPtr->hwnd, dc);
5249
5250     /* Call default proc to get the scrollbars etc. painted */
5251     DefWindowProcW (infoPtr->hwnd, WM_NCPAINT, (WPARAM)cliprgn, 0);
5252
5253     return TRUE;
5254 }
5255
5256 static LRESULT
5257 TREEVIEW_Notify(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
5258 {
5259     LPNMHDR lpnmh = (LPNMHDR)lParam;
5260
5261     if (lpnmh->code == PGN_CALCSIZE) {
5262         LPNMPGCALCSIZE lppgc = (LPNMPGCALCSIZE)lParam;
5263
5264         if (lppgc->dwFlag == PGF_CALCWIDTH) {
5265             lppgc->iWidth = infoPtr->treeWidth;
5266             TRACE("got PGN_CALCSIZE, returning horz size = %d, client=%d\n",
5267                   infoPtr->treeWidth, infoPtr->clientWidth);
5268         }
5269         else {
5270             lppgc->iHeight = infoPtr->treeHeight;
5271             TRACE("got PGN_CALCSIZE, returning vert size = %d, client=%d\n",
5272                   infoPtr->treeHeight, infoPtr->clientHeight);
5273         }
5274         return 0;
5275     }
5276     return DefWindowProcW(infoPtr->hwnd, WM_NOTIFY, wParam, lParam);
5277 }
5278
5279 static INT TREEVIEW_NotifyFormat (TREEVIEW_INFO *infoPtr, HWND hwndFrom, UINT nCommand)
5280 {
5281     INT format;
5282
5283     TRACE("(hwndFrom=%p, nCommand=%d)\n", hwndFrom, nCommand);
5284
5285     if (nCommand != NF_REQUERY) return 0;
5286
5287     format = SendMessageW(hwndFrom, WM_NOTIFYFORMAT, (WPARAM)infoPtr->hwnd, NF_QUERY);
5288     TRACE("format=%d\n", format);
5289
5290     if (format != NFR_ANSI && format != NFR_UNICODE) return 0;
5291
5292     infoPtr->bNtfUnicode = (format == NFR_UNICODE);
5293
5294     return format;
5295 }
5296
5297 static LRESULT
5298 TREEVIEW_Size(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
5299 {
5300     if (wParam == SIZE_RESTORED)
5301     {
5302         infoPtr->clientWidth  = (short)LOWORD(lParam);
5303         infoPtr->clientHeight = (short)HIWORD(lParam);
5304
5305         TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
5306         TREEVIEW_SetFirstVisible(infoPtr, infoPtr->firstVisible, TRUE);
5307         TREEVIEW_UpdateScrollBars(infoPtr);
5308     }
5309     else
5310     {
5311         FIXME("WM_SIZE flag %x %lx not handled\n", wParam, lParam);
5312     }
5313
5314     TREEVIEW_Invalidate(infoPtr, NULL);
5315     return 0;
5316 }
5317
5318 static LRESULT
5319 TREEVIEW_StyleChanged(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
5320 {
5321     TRACE("(%x %lx)\n", wParam, lParam);
5322
5323     if (wParam == GWL_STYLE)
5324     {
5325        DWORD dwNewStyle = ((LPSTYLESTRUCT)lParam)->styleNew;
5326
5327        /* we have to take special care about tooltips */
5328        if ((infoPtr->dwStyle ^ dwNewStyle) & TVS_NOTOOLTIPS)
5329        {
5330           if (infoPtr->dwStyle & TVS_NOTOOLTIPS)
5331           {
5332               infoPtr->hwndToolTip = COMCTL32_CreateToolTip(infoPtr->hwnd);
5333               TRACE("\n");
5334           }
5335           else
5336           {
5337              DestroyWindow(infoPtr->hwndToolTip);
5338              infoPtr->hwndToolTip = 0;
5339           }
5340        }
5341
5342        infoPtr->dwStyle = dwNewStyle;
5343     }
5344
5345     TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
5346     TREEVIEW_UpdateScrollBars(infoPtr);
5347     TREEVIEW_Invalidate(infoPtr, NULL);
5348
5349     return 0;
5350 }
5351
5352 static LRESULT
5353 TREEVIEW_SetCursor(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
5354 {
5355     POINT pt;
5356     TREEVIEW_ITEM * item;
5357
5358     GetCursorPos(&pt);
5359     ScreenToClient(infoPtr->hwnd, &pt);
5360
5361     item = TREEVIEW_HitTestPoint(infoPtr, pt);
5362
5363     /* FIXME: send NM_SETCURSOR */
5364
5365     if (item && (infoPtr->dwStyle & TVS_TRACKSELECT))
5366     {
5367         SetCursor(infoPtr->hcurHand);
5368         return 0;
5369     }
5370     else
5371         return DefWindowProcW(infoPtr->hwnd, WM_SETCURSOR, wParam, lParam);
5372 }
5373
5374 static LRESULT
5375 TREEVIEW_SetFocus(TREEVIEW_INFO *infoPtr)
5376 {
5377     TRACE("\n");
5378
5379     if (!infoPtr->selectedItem)
5380     {
5381         TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, infoPtr->firstVisible,
5382                               TVC_UNKNOWN);
5383     }
5384
5385     TREEVIEW_Invalidate(infoPtr, infoPtr->selectedItem);
5386     TREEVIEW_SendSimpleNotify(infoPtr, NM_SETFOCUS);
5387     return 0;
5388 }
5389
5390 static LRESULT
5391 TREEVIEW_KillFocus(TREEVIEW_INFO *infoPtr)
5392 {
5393     TRACE("\n");
5394
5395     TREEVIEW_Invalidate(infoPtr, infoPtr->selectedItem);
5396     UpdateWindow(infoPtr->hwnd);
5397     TREEVIEW_SendSimpleNotify(infoPtr, NM_KILLFOCUS);
5398     return 0;
5399 }
5400
5401 /* update theme after a WM_THEMECHANGED message */
5402 static LRESULT theme_changed (TREEVIEW_INFO* infoPtr)
5403 {
5404     HTHEME theme = GetWindowTheme (infoPtr->hwnd);
5405     CloseThemeData (theme);
5406     OpenThemeData (infoPtr->hwnd, themeClass);
5407     return 0;
5408 }
5409
5410
5411 static LRESULT WINAPI
5412 TREEVIEW_WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
5413 {
5414     TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
5415
5416     TRACE("hwnd %p msg %04x wp=%08x lp=%08lx\n", hwnd, uMsg, wParam, lParam);
5417
5418     if (infoPtr) TREEVIEW_VerifyTree(infoPtr);
5419     else
5420     {
5421         if (uMsg == WM_CREATE)
5422             TREEVIEW_Create(hwnd, (LPCREATESTRUCTW)lParam);
5423         else
5424             goto def;
5425     }
5426
5427     switch (uMsg)
5428     {
5429     case TVM_CREATEDRAGIMAGE:
5430         return TREEVIEW_CreateDragImage(infoPtr, wParam, lParam);
5431
5432     case TVM_DELETEITEM:
5433         return TREEVIEW_DeleteItem(infoPtr, (HTREEITEM)lParam);
5434
5435     case TVM_EDITLABELA:
5436         return (LRESULT)TREEVIEW_EditLabel(infoPtr, (HTREEITEM)lParam);
5437
5438     case TVM_EDITLABELW:
5439         return (LRESULT)TREEVIEW_EditLabel(infoPtr, (HTREEITEM)lParam);
5440
5441     case TVM_ENDEDITLABELNOW:
5442         return TREEVIEW_EndEditLabelNow(infoPtr, (BOOL)wParam);
5443
5444     case TVM_ENSUREVISIBLE:
5445         return TREEVIEW_EnsureVisible(infoPtr, (HTREEITEM)lParam, TRUE);
5446
5447     case TVM_EXPAND:
5448         return TREEVIEW_ExpandMsg(infoPtr, (UINT)wParam, (HTREEITEM)lParam);
5449
5450     case TVM_GETBKCOLOR:
5451         return TREEVIEW_GetBkColor(infoPtr);
5452
5453     case TVM_GETCOUNT:
5454         return TREEVIEW_GetCount(infoPtr);
5455
5456     case TVM_GETEDITCONTROL:
5457         return TREEVIEW_GetEditControl(infoPtr);
5458
5459     case TVM_GETIMAGELIST:
5460         return TREEVIEW_GetImageList(infoPtr, wParam);
5461
5462     case TVM_GETINDENT:
5463         return TREEVIEW_GetIndent(infoPtr);
5464
5465     case TVM_GETINSERTMARKCOLOR:
5466         return TREEVIEW_GetInsertMarkColor(infoPtr);
5467
5468     case TVM_GETISEARCHSTRINGA:
5469         FIXME("Unimplemented msg TVM_GETISEARCHSTRINGA\n");
5470         return 0;
5471
5472     case TVM_GETISEARCHSTRINGW:
5473         FIXME("Unimplemented msg TVM_GETISEARCHSTRINGW\n");
5474         return 0;
5475
5476     case TVM_GETITEMA:
5477         return TREEVIEW_GetItemT(infoPtr, (LPTVITEMEXW)lParam, FALSE);
5478
5479     case TVM_GETITEMW:
5480         return TREEVIEW_GetItemT(infoPtr, (LPTVITEMEXW)lParam, TRUE);
5481
5482     case TVM_GETITEMHEIGHT:
5483         return TREEVIEW_GetItemHeight(infoPtr);
5484
5485     case TVM_GETITEMRECT:
5486         return TREEVIEW_GetItemRect(infoPtr, (BOOL)wParam, (LPRECT)lParam);
5487
5488     case TVM_GETITEMSTATE:
5489         return TREEVIEW_GetItemState(infoPtr, (HTREEITEM)wParam, (UINT)lParam);
5490
5491     case TVM_GETLINECOLOR:
5492         return TREEVIEW_GetLineColor(infoPtr);
5493
5494     case TVM_GETNEXTITEM:
5495         return TREEVIEW_GetNextItem(infoPtr, (UINT)wParam, (HTREEITEM)lParam);
5496
5497     case TVM_GETSCROLLTIME:
5498         return TREEVIEW_GetScrollTime(infoPtr);
5499
5500     case TVM_GETTEXTCOLOR:
5501         return TREEVIEW_GetTextColor(infoPtr);
5502
5503     case TVM_GETTOOLTIPS:
5504         return TREEVIEW_GetToolTips(infoPtr);
5505
5506     case TVM_GETUNICODEFORMAT:
5507         return TREEVIEW_GetUnicodeFormat(infoPtr);
5508
5509     case TVM_GETVISIBLECOUNT:
5510         return TREEVIEW_GetVisibleCount(infoPtr);
5511
5512     case TVM_HITTEST:
5513         return TREEVIEW_HitTest(infoPtr, (LPTVHITTESTINFO)lParam);
5514
5515     case TVM_INSERTITEMA:
5516         return TREEVIEW_InsertItemT(infoPtr, (LPTVINSERTSTRUCTW)lParam, FALSE);
5517
5518     case TVM_INSERTITEMW:
5519         return TREEVIEW_InsertItemT(infoPtr, (LPTVINSERTSTRUCTW)lParam, TRUE);
5520
5521     case TVM_SELECTITEM:
5522         return TREEVIEW_SelectItem(infoPtr, (INT)wParam, (HTREEITEM)lParam);
5523
5524     case TVM_SETBKCOLOR:
5525         return TREEVIEW_SetBkColor(infoPtr, (COLORREF)lParam);
5526
5527     case TVM_SETIMAGELIST:
5528         return TREEVIEW_SetImageList(infoPtr, wParam, (HIMAGELIST)lParam);
5529
5530     case TVM_SETINDENT:
5531         return TREEVIEW_SetIndent(infoPtr, (UINT)wParam);
5532
5533     case TVM_SETINSERTMARK:
5534         return TREEVIEW_SetInsertMark(infoPtr, (BOOL)wParam, (HTREEITEM)lParam);
5535
5536     case TVM_SETINSERTMARKCOLOR:
5537         return TREEVIEW_SetInsertMarkColor(infoPtr, (COLORREF)lParam);
5538
5539     case TVM_SETITEMA:
5540         return TREEVIEW_SetItemT(infoPtr, (LPTVITEMEXW)lParam, FALSE);
5541
5542     case TVM_SETITEMW:
5543         return TREEVIEW_SetItemT(infoPtr, (LPTVITEMEXW)lParam, TRUE);
5544
5545     case TVM_SETLINECOLOR:
5546         return TREEVIEW_SetLineColor(infoPtr, (COLORREF)lParam);
5547
5548     case TVM_SETITEMHEIGHT:
5549         return TREEVIEW_SetItemHeight(infoPtr, (INT)(SHORT)wParam);
5550
5551     case TVM_SETSCROLLTIME:
5552         return TREEVIEW_SetScrollTime(infoPtr, (UINT)wParam);
5553
5554     case TVM_SETTEXTCOLOR:
5555         return TREEVIEW_SetTextColor(infoPtr, (COLORREF)lParam);
5556
5557     case TVM_SETTOOLTIPS:
5558         return TREEVIEW_SetToolTips(infoPtr, (HWND)wParam);
5559
5560     case TVM_SETUNICODEFORMAT:
5561         return TREEVIEW_SetUnicodeFormat(infoPtr, (BOOL)wParam);
5562
5563     case TVM_SORTCHILDREN:
5564         return TREEVIEW_SortChildren(infoPtr, wParam, lParam);
5565
5566     case TVM_SORTCHILDRENCB:
5567         return TREEVIEW_SortChildrenCB(infoPtr, wParam, (LPTVSORTCB)lParam);
5568
5569     case WM_CHAR:
5570         return TREEVIEW_ProcessLetterKeys( hwnd, wParam, lParam );
5571
5572     case WM_COMMAND:
5573         return TREEVIEW_Command(infoPtr, wParam, lParam);
5574
5575     case WM_DESTROY:
5576         return TREEVIEW_Destroy(infoPtr);
5577
5578         /* WM_ENABLE */
5579
5580     case WM_ERASEBKGND:
5581         return TREEVIEW_EraseBackground(infoPtr, (HDC)wParam);
5582
5583     case WM_GETDLGCODE:
5584         return DLGC_WANTARROWS | DLGC_WANTCHARS;
5585
5586     case WM_GETFONT:
5587         return TREEVIEW_GetFont(infoPtr);
5588
5589     case WM_HSCROLL:
5590         return TREEVIEW_HScroll(infoPtr, wParam);
5591
5592     case WM_KEYDOWN:
5593         return TREEVIEW_KeyDown(infoPtr, wParam);
5594
5595     case WM_KILLFOCUS:
5596         return TREEVIEW_KillFocus(infoPtr);
5597
5598     case WM_LBUTTONDBLCLK:
5599         return TREEVIEW_LButtonDoubleClick(infoPtr, lParam);
5600
5601     case WM_LBUTTONDOWN:
5602         return TREEVIEW_LButtonDown(infoPtr, lParam);
5603
5604         /* WM_MBUTTONDOWN */
5605
5606     case WM_MOUSELEAVE:
5607         return TREEVIEW_MouseLeave(infoPtr);
5608
5609     case WM_MOUSEMOVE:
5610         if (infoPtr->dwStyle & TVS_TRACKSELECT)
5611             return TREEVIEW_MouseMove(infoPtr, wParam, lParam);
5612         else
5613             return 0;
5614
5615     case WM_NCLBUTTONDOWN:
5616         if (infoPtr->hwndEdit)
5617             SetFocus(infoPtr->hwnd);
5618         goto def;
5619
5620     case WM_NCPAINT:
5621         if (nc_paint (infoPtr, (HRGN)wParam))
5622             return 0;
5623         goto def;
5624
5625     case WM_NOTIFY:
5626         return TREEVIEW_Notify(infoPtr, wParam, lParam);
5627
5628     case WM_NOTIFYFORMAT:
5629         return TREEVIEW_NotifyFormat(infoPtr, (HWND)wParam, (UINT)lParam);
5630
5631     case WM_PRINTCLIENT:
5632     case WM_PAINT:
5633         return TREEVIEW_Paint(infoPtr, wParam);
5634
5635     case WM_RBUTTONDOWN:
5636         return TREEVIEW_RButtonDown(infoPtr, lParam);
5637
5638     case WM_SETCURSOR:
5639         return TREEVIEW_SetCursor(infoPtr, wParam, lParam);
5640
5641     case WM_SETFOCUS:
5642         return TREEVIEW_SetFocus(infoPtr);
5643
5644     case WM_SETFONT:
5645         return TREEVIEW_SetFont(infoPtr, (HFONT)wParam, (BOOL)lParam);
5646
5647     case WM_SETREDRAW:
5648         return TREEVIEW_SetRedraw(infoPtr, wParam, lParam);
5649
5650     case WM_SIZE:
5651         return TREEVIEW_Size(infoPtr, wParam, lParam);
5652
5653     case WM_STYLECHANGED:
5654         return TREEVIEW_StyleChanged(infoPtr, wParam, lParam);
5655
5656         /* WM_SYSCOLORCHANGE */
5657
5658         /* WM_SYSKEYDOWN */
5659
5660     case WM_TIMER:
5661         return TREEVIEW_HandleTimer(infoPtr, wParam);
5662
5663     case WM_THEMECHANGED:
5664         return theme_changed (infoPtr);
5665
5666     case WM_VSCROLL:
5667         return TREEVIEW_VScroll(infoPtr, wParam);
5668
5669         /* WM_WININICHANGE */
5670
5671     case WM_MOUSEWHEEL:
5672         if (wParam & (MK_SHIFT | MK_CONTROL))
5673             goto def;
5674         return TREEVIEW_MouseWheel(infoPtr, wParam);
5675
5676     case WM_DRAWITEM:
5677         TRACE("drawItem\n");
5678         goto def;
5679
5680     default:
5681         /* This mostly catches MFC and Delphi messages. :( */
5682         if ((uMsg >= WM_USER) && (uMsg < WM_APP))
5683             TRACE("Unknown msg %04x wp=%08x lp=%08lx\n", uMsg, wParam, lParam);
5684 def:
5685         return DefWindowProcW(hwnd, uMsg, wParam, lParam);
5686     }
5687 }
5688
5689
5690 /* Class Registration ***************************************************/
5691
5692 VOID
5693 TREEVIEW_Register(void)
5694 {
5695     WNDCLASSW wndClass;
5696
5697     TRACE("\n");
5698
5699     ZeroMemory(&wndClass, sizeof(WNDCLASSW));
5700     wndClass.style = CS_GLOBALCLASS | CS_DBLCLKS;
5701     wndClass.lpfnWndProc = TREEVIEW_WindowProc;
5702     wndClass.cbClsExtra = 0;
5703     wndClass.cbWndExtra = sizeof(TREEVIEW_INFO *);
5704
5705     wndClass.hCursor = LoadCursorW(0, (LPWSTR)IDC_ARROW);
5706     wndClass.hbrBackground = 0;
5707     wndClass.lpszClassName = WC_TREEVIEWW;
5708
5709     RegisterClassW(&wndClass);
5710 }
5711
5712
5713 VOID
5714 TREEVIEW_Unregister(void)
5715 {
5716     UnregisterClassW(WC_TREEVIEWW, NULL);
5717 }
5718
5719
5720 /* Tree Verification ****************************************************/
5721
5722 #ifdef NDEBUG
5723 static inline void
5724 TREEVIEW_VerifyChildren(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item);
5725
5726 static inline void TREEVIEW_VerifyItemCommon(TREEVIEW_INFO *infoPtr,
5727                                              TREEVIEW_ITEM *item)
5728 {
5729     assert(infoPtr != NULL);
5730     assert(item != NULL);
5731
5732     /* both NULL, or both non-null */
5733     assert((item->firstChild == NULL) == (item->lastChild == NULL));
5734
5735     assert(item->firstChild != item);
5736     assert(item->lastChild != item);
5737
5738     if (item->firstChild)
5739     {
5740         assert(item->firstChild->parent == item);
5741         assert(item->firstChild->prevSibling == NULL);
5742     }
5743
5744     if (item->lastChild)
5745     {
5746         assert(item->lastChild->parent == item);
5747         assert(item->lastChild->nextSibling == NULL);
5748     }
5749
5750     assert(item->nextSibling != item);
5751     if (item->nextSibling)
5752     {
5753         assert(item->nextSibling->parent == item->parent);
5754         assert(item->nextSibling->prevSibling == item);
5755     }
5756
5757     assert(item->prevSibling != item);
5758     if (item->prevSibling)
5759     {
5760         assert(item->prevSibling->parent == item->parent);
5761         assert(item->prevSibling->nextSibling == item);
5762     }
5763 }
5764
5765 static inline void
5766 TREEVIEW_VerifyItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
5767 {
5768     assert(item != NULL);
5769
5770     assert(item->parent != NULL);
5771     assert(item->parent != item);
5772     assert(item->iLevel == item->parent->iLevel + 1);
5773
5774     assert(DPA_GetPtrIndex(infoPtr->items, item) != -1);
5775
5776     TREEVIEW_VerifyItemCommon(infoPtr, item);
5777
5778     TREEVIEW_VerifyChildren(infoPtr, item);
5779 }
5780
5781 static inline void
5782 TREEVIEW_VerifyChildren(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
5783 {
5784     TREEVIEW_ITEM *child;
5785     assert(item != NULL);
5786
5787     for (child = item->firstChild; child != NULL; child = child->nextSibling)
5788         TREEVIEW_VerifyItem(infoPtr, child);
5789 }
5790
5791 static inline void
5792 TREEVIEW_VerifyRoot(TREEVIEW_INFO *infoPtr)
5793 {
5794     TREEVIEW_ITEM *root = infoPtr->root;
5795
5796     assert(root != NULL);
5797     assert(root->iLevel == -1);
5798     assert(root->parent == NULL);
5799     assert(root->prevSibling == NULL);
5800
5801     TREEVIEW_VerifyItemCommon(infoPtr, root);
5802
5803     TREEVIEW_VerifyChildren(infoPtr, root);
5804 }
5805
5806 static void
5807 TREEVIEW_VerifyTree(TREEVIEW_INFO *infoPtr)
5808 {
5809     assert(infoPtr != NULL);
5810
5811     TREEVIEW_VerifyRoot(infoPtr);
5812 }
5813 #endif