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                 if (oldText)
 824                     Free(oldText);
 825             }
 826         }
 827     }
 828
 829     if (mask & TVIF_IMAGE)
 830         wineItem->iImage = callback.item.iImage;
 831
 832     if (mask & TVIF_SELECTEDIMAGE)
 833         wineItem->iSelectedImage = callback.item.iSelectedImage;
 834
 835     if (mask & TVIF_CHILDREN)
 836         wineItem->cChildren = callback.item.cChildren;
 837
 838     /* These members are now permanently set. */
 839     if (callback.item.mask & TVIF_DI_SETITEM)
 840         wineItem->callbackMask &= ~callback.item.mask;
 841 }
 842
 843 /***************************************************************************
 844  * This function uses cChildren field to decide whether the item has
 845  * children or not.
 846  * Note: if this returns TRUE, the child items may not actually exist,
 847  * they could be virtual.
 848  *
 849  * Just use wineItem->firstChild to check for physical children.
 850  */
 851 static BOOL
 852 TREEVIEW_HasChildren(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem)
 853 {
 854     TREEVIEW_UpdateDispInfo(infoPtr, wineItem, TVIF_CHILDREN);
 855
 856     return wineItem->cChildren > 0;
 857 }
 858
 859
 860 /* Item Position ********************************************************/
 861
 862 /* Compute linesOffset, stateOffset, imageOffset, textOffset of an item. */
 863 static VOID
 864 TREEVIEW_ComputeItemInternalMetrics(TREEVIEW_INFO *infoPtr,
 865                                     TREEVIEW_ITEM *item)
 866 {
 867     /* Same effect, different optimisation. */
 868 #if 0
 869     BOOL lar = ((infoPtr->dwStyle & TVS_LINESATROOT)
 870                 && (infoPtr->dwStyle & (TVS_HASLINES|TVS_HASBUTTONS)));
 871 #else
 872     BOOL lar = ((infoPtr->dwStyle
 873                  & (TVS_LINESATROOT|TVS_HASLINES|TVS_HASBUTTONS))
 874                 > TVS_LINESATROOT);
 875 #endif
 876
 877     item->linesOffset = infoPtr->uIndent * (item->iLevel + lar - 1)
 878         - infoPtr->scrollX;
 879     item->stateOffset = item->linesOffset + infoPtr->uIndent;
 880     item->imageOffset = item->stateOffset
 881         + (STATEIMAGEINDEX(item->state) ? infoPtr->stateImageWidth : 0);
 882     item->textOffset  = item->imageOffset + infoPtr->normalImageWidth;
 883 }
 884
 885 static VOID
 886 TREEVIEW_ComputeTextWidth(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item, HDC hDC)
 887 {
 888     HDC hdc;
 889     HFONT hOldFont=0;
 890     SIZE sz;
 891
 892     /* DRAW's OM docker creates items like this */
 893     if (item->pszText == NULL)
 894     {
 895         item->textWidth = 0;
 896         return;
 897     }
 898
 899     if (hDC != 0)
 900     {
 901         hdc = hDC;
 902     }
 903     else
 904     {
 905         hdc = GetDC(infoPtr->hwnd);
 906         hOldFont = SelectObject(hdc, TREEVIEW_FontForItem(infoPtr, item));
 907     }
 908
 909     GetTextExtentPoint32W(hdc, item->pszText, strlenW(item->pszText), &sz);
 910     item->textWidth = sz.cx;
 911
 912     if (hDC == 0)
 913     {
 914         SelectObject(hdc, hOldFont);
 915         ReleaseDC(0, hdc);
 916     }
 917 }
 918
 919 static VOID
 920 TREEVIEW_ComputeItemRect(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
 921 {
 922     item->rect.top = infoPtr->uItemHeight *
 923         (item->visibleOrder - infoPtr->firstVisible->visibleOrder);
 924
 925     item->rect.bottom = item->rect.top
 926         + infoPtr->uItemHeight * item->iIntegral - 1;
 927
 928     item->rect.left = 0;
 929     item->rect.right = infoPtr->clientWidth;
 930 }
 931
 932 /* We know that only items after start need their order updated. */
 933 static void
 934 TREEVIEW_RecalculateVisibleOrder(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *start)
 935 {
 936     TREEVIEW_ITEM *item;
 937     int order;
 938
 939     if (!start)
 940     {
 941         start = infoPtr->root->firstChild;
 942         order = 0;
 943     }
 944     else
 945         order = start->visibleOrder;
 946
 947     for (item = start; item != NULL;
 948          item = TREEVIEW_GetNextListItem(infoPtr, item))
 949     {
 950         item->visibleOrder = order;
 951         order += item->iIntegral;
 952     }
 953
 954     infoPtr->maxVisibleOrder = order;
 955
 956     for (item = start; item != NULL;
 957          item = TREEVIEW_GetNextListItem(infoPtr, item))
 958     {
 959         TREEVIEW_ComputeItemRect(infoPtr, item);
 960     }
 961 }
 962
 963
 964 /* Update metrics of all items in selected subtree.
 965  * root must be expanded
 966  */
 967 static VOID
 968 TREEVIEW_UpdateSubTree(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *root)
 969 {
 970    TREEVIEW_ITEM *sibling;
 971    HDC hdc;
 972    HFONT hOldFont;
 973
 974    if (!root->firstChild || !(root->state & TVIS_EXPANDED))
 975       return;
 976
 977    root->state &= ~TVIS_EXPANDED;
 978    sibling = TREEVIEW_GetNextListItem(infoPtr, root);
 979    root->state |= TVIS_EXPANDED;
 980
 981    hdc = GetDC(infoPtr->hwnd);
 982    hOldFont = SelectObject(hdc, infoPtr->hFont);
 983
 984    for (; root != sibling;
 985         root = TREEVIEW_GetNextListItem(infoPtr, root))
 986    {
 987       TREEVIEW_ComputeItemInternalMetrics(infoPtr, root);
 988
 989       if (root->callbackMask & TVIF_TEXT)
 990          TREEVIEW_UpdateDispInfo(infoPtr, root, TVIF_TEXT);
 991
 992       if (root->textWidth == 0)
 993       {
 994          SelectObject(hdc, TREEVIEW_FontForItem(infoPtr, root));
 995          TREEVIEW_ComputeTextWidth(infoPtr, root, hdc);
 996       }
 997    }
 998
 999    SelectObject(hdc, hOldFont);
1000    ReleaseDC(infoPtr->hwnd, hdc);
1001 }
1002
1003 /* Item Allocation **********************************************************/
1004
1005 static TREEVIEW_ITEM *
1006 TREEVIEW_AllocateItem(TREEVIEW_INFO *infoPtr)
1007 {
1008     TREEVIEW_ITEM *newItem = Alloc(sizeof(TREEVIEW_ITEM));
1009
1010     if (!newItem)
1011         return NULL;
1012
1013     /* I_IMAGENONE would make more sense but this is neither what is
1014      * documented (MSDN doesn't specify) nor what Windows actually does
1015      * (it sets it to zero)... and I can so imagine an application using
1016      * inc/dec to toggle the images. */
1017     newItem->iImage = 0;
1018     newItem->iSelectedImage = 0;
1019
1020     if (DPA_InsertPtr(infoPtr->items, INT_MAX, newItem) == -1)
1021     {
1022         Free(newItem);
1023         return NULL;
1024     }
1025
1026     return newItem;
1027 }
1028
1029 /* Exact opposite of TREEVIEW_AllocateItem. In particular, it does not
1030  * free item->pszText. */
1031 static void
1032 TREEVIEW_FreeItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
1033 {
1034     DPA_DeletePtr(infoPtr->items, DPA_GetPtrIndex(infoPtr->items, item));
1035     Free(item);
1036     if (infoPtr->selectedItem == item)
1037         infoPtr->selectedItem = NULL;
1038     if (infoPtr->hotItem == item)
1039         infoPtr->hotItem = NULL;
1040     if (infoPtr->focusedItem == item)
1041         infoPtr->focusedItem = NULL;
1042     if (infoPtr->firstVisible == item)
1043         infoPtr->firstVisible = NULL;
1044     if (infoPtr->dropItem == item)
1045         infoPtr->dropItem = NULL;
1046     if (infoPtr->insertMarkItem == item)
1047         infoPtr->insertMarkItem = NULL;
1048 }
1049
1050
1051 /* Item Insertion *******************************************************/
1052
1053 /***************************************************************************
1054  * This method inserts newItem before sibling as a child of parent.
1055  * sibling can be NULL, but only if parent has no children.
1056  */
1057 static void
1058 TREEVIEW_InsertBefore(TREEVIEW_ITEM *newItem, TREEVIEW_ITEM *sibling,
1059                       TREEVIEW_ITEM *parent)
1060 {
1061     assert(newItem != NULL);
1062     assert(parent != NULL);
1063
1064     if (sibling != NULL)
1065     {
1066         assert(sibling->parent == parent);
1067
1068         if (sibling->prevSibling != NULL)
1069             sibling->prevSibling->nextSibling = newItem;
1070
1071         newItem->prevSibling = sibling->prevSibling;
1072         sibling->prevSibling = newItem;
1073     }
1074     else
1075        newItem->prevSibling = NULL;
1076
1077     newItem->nextSibling = sibling;
1078
1079     if (parent->firstChild == sibling)
1080         parent->firstChild = newItem;
1081
1082     if (parent->lastChild == NULL)
1083         parent->lastChild = newItem;
1084 }
1085
1086 /***************************************************************************
1087  * This method inserts newItem after sibling as a child of parent.
1088  * sibling can be NULL, but only if parent has no children.
1089  */
1090 static void
1091 TREEVIEW_InsertAfter(TREEVIEW_ITEM *newItem, TREEVIEW_ITEM *sibling,
1092                      TREEVIEW_ITEM *parent)
1093 {
1094     assert(newItem != NULL);
1095     assert(parent != NULL);
1096
1097     if (sibling != NULL)
1098     {
1099         assert(sibling->parent == parent);
1100
1101         if (sibling->nextSibling != NULL)
1102             sibling->nextSibling->prevSibling = newItem;
1103
1104         newItem->nextSibling = sibling->nextSibling;
1105         sibling->nextSibling = newItem;
1106     }
1107     else
1108        newItem->nextSibling = NULL;
1109
1110     newItem->prevSibling = sibling;
1111
1112     if (parent->lastChild == sibling)
1113         parent->lastChild = newItem;
1114
1115     if (parent->firstChild == NULL)
1116         parent->firstChild = newItem;
1117 }
1118
1119 static BOOL
1120 TREEVIEW_DoSetItemT(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
1121                    const TVITEMEXW *tvItem, BOOL isW)
1122 {
1123     UINT callbackClear = 0;
1124     UINT callbackSet = 0;
1125
1126     TRACE("item %p\n", wineItem);
1127     /* Do this first in case it fails. */
1128     if (tvItem->mask & TVIF_TEXT)
1129     {
1130         wineItem->textWidth = 0; /* force width recalculation */
1131         if (tvItem->pszText != LPSTR_TEXTCALLBACKW) /* covers != TEXTCALLBACKA too */
1132         {
1133             int len;
1134             LPWSTR newText;
1135             if (isW)
1136                 len = lstrlenW(tvItem->pszText) + 1;
1137             else
1138                 len = MultiByteToWideChar(CP_ACP, 0, (LPSTR)tvItem->pszText, -1, NULL, 0);
1139
1140             newText  = ReAlloc(wineItem->pszText, len * sizeof(WCHAR));
1141
1142             if (newText == NULL) return FALSE;
1143
1144             callbackClear |= TVIF_TEXT;
1145
1146             wineItem->pszText = newText;
1147             wineItem->cchTextMax = len;
1148             if (isW)
1149                 lstrcpynW(wineItem->pszText, tvItem->pszText, len);
1150             else
1151                 MultiByteToWideChar(CP_ACP, 0, (LPSTR)tvItem->pszText, -1,
1152                                     wineItem->pszText, len);
1153
1154             TRACE("setting text %s, item %p\n", debugstr_w(wineItem->pszText), wineItem);
1155         }
1156         else
1157         {
1158             callbackSet |= TVIF_TEXT;
1159
1160             wineItem->pszText = ReAlloc(wineItem->pszText,
1161                                         TEXT_CALLBACK_SIZE * sizeof(WCHAR));
1162             wineItem->cchTextMax = TEXT_CALLBACK_SIZE;
1163             TRACE("setting callback, item %p\n", wineItem);
1164         }
1165     }
1166
1167     if (tvItem->mask & TVIF_CHILDREN)
1168     {
1169         wineItem->cChildren = tvItem->cChildren;
1170
1171         if (wineItem->cChildren == I_CHILDRENCALLBACK)
1172             callbackSet |= TVIF_CHILDREN;
1173         else
1174             callbackClear |= TVIF_CHILDREN;
1175     }
1176
1177     if (tvItem->mask & TVIF_IMAGE)
1178     {
1179         wineItem->iImage = tvItem->iImage;
1180
1181         if (wineItem->iImage == I_IMAGECALLBACK)
1182             callbackSet |= TVIF_IMAGE;
1183         else
1184             callbackClear |= TVIF_IMAGE;
1185     }
1186
1187     if (tvItem->mask & TVIF_SELECTEDIMAGE)
1188     {
1189         wineItem->iSelectedImage = tvItem->iSelectedImage;
1190
1191         if (wineItem->iSelectedImage == I_IMAGECALLBACK)
1192             callbackSet |= TVIF_SELECTEDIMAGE;
1193         else
1194             callbackClear |= TVIF_SELECTEDIMAGE;
1195     }
1196
1197     if (tvItem->mask & TVIF_PARAM)
1198         wineItem->lParam = tvItem->lParam;
1199
1200     /* If the application sets TVIF_INTEGRAL without
1201      * supplying a TVITEMEX structure, it's toast. */
1202     if (tvItem->mask & TVIF_INTEGRAL)
1203         wineItem->iIntegral = tvItem->iIntegral;
1204
1205     if (tvItem->mask & TVIF_STATE)
1206     {
1207         TRACE("prevstate,state,mask:%x,%x,%x\n", wineItem->state, tvItem->state,
1208               tvItem->stateMask);
1209         wineItem->state &= ~tvItem->stateMask;
1210         wineItem->state |= (tvItem->state & tvItem->stateMask);
1211     }
1212
1213     wineItem->callbackMask |= callbackSet;
1214     wineItem->callbackMask &= ~callbackClear;
1215
1216     return TRUE;
1217 }
1218
1219 /* Note that the new item is pre-zeroed. */
1220 static LRESULT
1221 TREEVIEW_InsertItemT(TREEVIEW_INFO *infoPtr, const TVINSERTSTRUCTW *ptdi, BOOL isW)
1222 {
1223     const TVITEMEXW *tvItem = &ptdi->u.itemex;
1224     HTREEITEM insertAfter;
1225     TREEVIEW_ITEM *newItem, *parentItem;
1226     BOOL bTextUpdated = FALSE;
1227
1228     if (ptdi->hParent == TVI_ROOT || ptdi->hParent == 0)
1229     {
1230         parentItem = infoPtr->root;
1231     }
1232     else
1233     {
1234         parentItem = ptdi->hParent;
1235
1236         if (!TREEVIEW_ValidItem(infoPtr, parentItem))
1237         {
1238             WARN("invalid parent %p\n", parentItem);
1239             return (LRESULT)(HTREEITEM)NULL;
1240         }
1241     }
1242
1243     insertAfter = ptdi->hInsertAfter;
1244
1245     /* Validate this now for convenience. */
1246     switch ((DWORD_PTR)insertAfter)
1247     {
1248     case (DWORD_PTR)TVI_FIRST:
1249     case (DWORD_PTR)TVI_LAST:
1250     case (DWORD_PTR)TVI_SORT:
1251         break;
1252
1253     default:
1254         if (!TREEVIEW_ValidItem(infoPtr, insertAfter) ||
1255             insertAfter->parent != parentItem)
1256         {
1257             WARN("invalid insert after %p\n", insertAfter);
1258             insertAfter = TVI_LAST;
1259         }
1260     }
1261
1262     TRACE("parent %p position %p: %s\n", parentItem, insertAfter,
1263           (tvItem->mask & TVIF_TEXT)
1264           ? ((tvItem->pszText == LPSTR_TEXTCALLBACKW) ? "<callback>"
1265              : (isW ? debugstr_w(tvItem->pszText) : debugstr_a((LPSTR)tvItem->pszText)))
1266           : "<no label>");
1267
1268     newItem = TREEVIEW_AllocateItem(infoPtr);
1269     if (newItem == NULL)
1270         return (LRESULT)(HTREEITEM)NULL;
1271
1272     newItem->parent = parentItem;
1273     newItem->iIntegral = 1;
1274
1275     if (!TREEVIEW_DoSetItemT(infoPtr, newItem, tvItem, isW))
1276         return (LRESULT)(HTREEITEM)NULL;
1277
1278     /* After this point, nothing can fail. (Except for TVI_SORT.) */
1279
1280     infoPtr->uNumItems++;
1281
1282     switch ((DWORD_PTR)insertAfter)
1283     {
1284     case (DWORD_PTR)TVI_FIRST:
1285         {
1286            TREEVIEW_ITEM *originalFirst = parentItem->firstChild;
1287            TREEVIEW_InsertBefore(newItem, parentItem->firstChild, parentItem);
1288            if (infoPtr->firstVisible == originalFirst)
1289               TREEVIEW_SetFirstVisible(infoPtr, newItem, TRUE);
1290         }
1291         break;
1292
1293     case (DWORD_PTR)TVI_LAST:
1294         TREEVIEW_InsertAfter(newItem, parentItem->lastChild, parentItem);
1295         break;
1296
1297         /* hInsertAfter names a specific item we want to insert after */
1298     default:
1299         TREEVIEW_InsertAfter(newItem, insertAfter, insertAfter->parent);
1300         break;
1301
1302     case (DWORD_PTR)TVI_SORT:
1303         {
1304             TREEVIEW_ITEM *aChild;
1305             TREEVIEW_ITEM *previousChild = NULL;
1306             TREEVIEW_ITEM *originalFirst = parentItem->firstChild;
1307             BOOL bItemInserted = FALSE;
1308
1309             aChild = parentItem->firstChild;
1310
1311             bTextUpdated = TRUE;
1312             TREEVIEW_UpdateDispInfo(infoPtr, newItem, TVIF_TEXT);
1313
1314             /* Iterate the parent children to see where we fit in */
1315             while (aChild != NULL)
1316             {
1317                 INT comp;
1318
1319                 TREEVIEW_UpdateDispInfo(infoPtr, aChild, TVIF_TEXT);
1320                 comp = lstrcmpW(newItem->pszText, aChild->pszText);
1321
1322                 if (comp < 0)   /* we are smaller than the current one */
1323                 {
1324                     TREEVIEW_InsertBefore(newItem, aChild, parentItem);
1325                     if (infoPtr->firstVisible == originalFirst &&
1326                         aChild == originalFirst)
1327                         TREEVIEW_SetFirstVisible(infoPtr, newItem, TRUE);
1328                     bItemInserted = TRUE;
1329                     break;
1330                 }
1331                 else if (comp > 0)      /* we are bigger than the current one */
1332                 {
1333                     previousChild = aChild;
1334
1335                     /* This will help us to exit if there is no more sibling */
1336                     aChild = (aChild->nextSibling == 0)
1337                         ? NULL
1338                         : aChild->nextSibling;
1339
1340                     /* Look at the next item */
1341                     continue;
1342                 }
1343                 else if (comp == 0)
1344                 {
1345                     /*
1346                      * An item with this name is already existing, therefore,
1347                      * we add after the one we found
1348                      */
1349                     TREEVIEW_InsertAfter(newItem, aChild, parentItem);
1350                     bItemInserted = TRUE;
1351                     break;
1352                 }
1353             }
1354
1355             /*
1356              * we reach the end of the child list and the item has not
1357              * yet been inserted, therefore, insert it after the last child.
1358              */
1359             if ((!bItemInserted) && (aChild == NULL))
1360                 TREEVIEW_InsertAfter(newItem, previousChild, parentItem);
1361
1362             break;
1363         }
1364     }
1365
1366
1367     TRACE("new item %p; parent %p, mask %x\n", newItem,
1368           newItem->parent, tvItem->mask);
1369
1370     newItem->iLevel = newItem->parent->iLevel + 1;
1371
1372     if (newItem->parent->cChildren == 0)
1373         newItem->parent->cChildren = 1;
1374
1375     if (infoPtr->dwStyle & TVS_CHECKBOXES)
1376     {
1377         if (STATEIMAGEINDEX(newItem->state) == 0)
1378             newItem->state |= INDEXTOSTATEIMAGEMASK(1);
1379     }
1380
1381     if (infoPtr->firstVisible == NULL)
1382         infoPtr->firstVisible = newItem;
1383
1384     TREEVIEW_VerifyTree(infoPtr);
1385
1386     if (parentItem == infoPtr->root ||
1387         (ISVISIBLE(parentItem) && parentItem->state & TVIS_EXPANDED))
1388     {
1389        TREEVIEW_ITEM *item;
1390        TREEVIEW_ITEM *prev = TREEVIEW_GetPrevListItem(infoPtr, newItem);
1391
1392        TREEVIEW_RecalculateVisibleOrder(infoPtr, prev);
1393        TREEVIEW_ComputeItemInternalMetrics(infoPtr, newItem);
1394
1395        if (!bTextUpdated)
1396           TREEVIEW_UpdateDispInfo(infoPtr, newItem, TVIF_TEXT);
1397
1398        TREEVIEW_ComputeTextWidth(infoPtr, newItem, 0);
1399        TREEVIEW_UpdateScrollBars(infoPtr);
1400     /*
1401      * if the item was inserted in a visible part of the tree,
1402      * invalidate it, as well as those after it
1403      */
1404        for (item = newItem;
1405             item != NULL;
1406             item = TREEVIEW_GetNextListItem(infoPtr, item))
1407           TREEVIEW_Invalidate(infoPtr, item);
1408     }
1409     else
1410     {
1411        newItem->visibleOrder = -1;
1412
1413        /* refresh treeview if newItem is the first item inserted under parentItem */
1414        if (ISVISIBLE(parentItem) && newItem->prevSibling == newItem->nextSibling)
1415        {
1416           /* parent got '+' - update it */
1417           TREEVIEW_Invalidate(infoPtr, parentItem);
1418        }
1419     }
1420
1421     return (LRESULT)newItem;
1422 }
1423
1424 /* Item Deletion ************************************************************/
1425 static void
1426 TREEVIEW_RemoveItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem);
1427
1428 static void
1429 TREEVIEW_RemoveAllChildren(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *parentItem)
1430 {
1431     TREEVIEW_ITEM *kill = parentItem->firstChild;
1432
1433     while (kill != NULL)
1434     {
1435         TREEVIEW_ITEM *next = kill->nextSibling;
1436
1437         TREEVIEW_RemoveItem(infoPtr, kill);
1438
1439         kill = next;
1440     }
1441
1442     assert(parentItem->cChildren <= 0); /* I_CHILDRENCALLBACK or 0 */
1443     assert(parentItem->firstChild == NULL);
1444     assert(parentItem->lastChild == NULL);
1445 }
1446
1447 static void
1448 TREEVIEW_UnlinkItem(TREEVIEW_ITEM *item)
1449 {
1450     TREEVIEW_ITEM *parentItem = item->parent;
1451
1452     assert(item != NULL);
1453     assert(item->parent != NULL); /* i.e. it must not be the root */
1454
1455     if (parentItem->firstChild == item)
1456         parentItem->firstChild = item->nextSibling;
1457
1458     if (parentItem->lastChild == item)
1459         parentItem->lastChild = item->prevSibling;
1460
1461     if (parentItem->firstChild == NULL && parentItem->lastChild == NULL
1462         && parentItem->cChildren > 0)
1463         parentItem->cChildren = 0;
1464
1465     if (item->prevSibling)
1466         item->prevSibling->nextSibling = item->nextSibling;
1467
1468     if (item->nextSibling)
1469         item->nextSibling->prevSibling = item->prevSibling;
1470 }
1471
1472 static void
1473 TREEVIEW_RemoveItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem)
1474 {
1475     TRACE("%p, (%s)\n", wineItem, TREEVIEW_ItemName(wineItem));
1476
1477     TREEVIEW_SendTreeviewNotify(infoPtr, TVN_DELETEITEMW, TVC_UNKNOWN,
1478                                 TVIF_HANDLE | TVIF_PARAM, wineItem, 0);
1479
1480     if (wineItem->firstChild)
1481         TREEVIEW_RemoveAllChildren(infoPtr, wineItem);
1482
1483     TREEVIEW_UnlinkItem(wineItem);
1484
1485     infoPtr->uNumItems--;
1486
1487     if (wineItem->pszText && wineItem->pszText != LPSTR_TEXTCALLBACKW)
1488         Free(wineItem->pszText);
1489
1490     TREEVIEW_FreeItem(infoPtr, wineItem);
1491 }
1492
1493
1494 /* Empty out the tree. */
1495 static void
1496 TREEVIEW_RemoveTree(TREEVIEW_INFO *infoPtr)
1497 {
1498     TREEVIEW_RemoveAllChildren(infoPtr, infoPtr->root);
1499
1500     assert(infoPtr->uNumItems == 0);    /* root isn't counted in uNumItems */
1501 }
1502
1503 static LRESULT
1504 TREEVIEW_DeleteItem(TREEVIEW_INFO *infoPtr, HTREEITEM wineItem)
1505 {
1506     TREEVIEW_ITEM *newSelection = NULL;
1507     TREEVIEW_ITEM *newFirstVisible = NULL;
1508     TREEVIEW_ITEM *parent, *prev = NULL;
1509     BOOL visible = FALSE;
1510
1511     if (wineItem == TVI_ROOT)
1512     {
1513         TRACE("TVI_ROOT\n");
1514         parent = infoPtr->root;
1515         newSelection = NULL;
1516         visible = TRUE;
1517         TREEVIEW_RemoveTree(infoPtr);
1518     }
1519     else
1520     {
1521         if (!TREEVIEW_ValidItem(infoPtr, wineItem))
1522             return FALSE;
1523
1524         TRACE("%p (%s)\n", wineItem, TREEVIEW_ItemName(wineItem));
1525         parent = wineItem->parent;
1526
1527         if (ISVISIBLE(wineItem))
1528         {
1529             prev = TREEVIEW_GetPrevListItem(infoPtr, wineItem);
1530             visible = TRUE;
1531         }
1532
1533         if (infoPtr->selectedItem != NULL
1534             && (wineItem == infoPtr->selectedItem
1535                 || TREEVIEW_IsChildOf(wineItem, infoPtr->selectedItem)))
1536         {
1537             if (wineItem->nextSibling)
1538                 newSelection = wineItem->nextSibling;
1539             else if (wineItem->parent != infoPtr->root)
1540                 newSelection = wineItem->parent;
1541             else
1542                 newSelection = wineItem->prevSibling;
1543             TRACE("newSelection = %p\n", newSelection);
1544         }
1545
1546         if (infoPtr->firstVisible == wineItem)
1547         {
1548             if (wineItem->nextSibling)
1549                newFirstVisible = wineItem->nextSibling;
1550             else if (wineItem->prevSibling)
1551                newFirstVisible = wineItem->prevSibling;
1552             else if (wineItem->parent != infoPtr->root)
1553                newFirstVisible = wineItem->parent;
1554                TREEVIEW_SetFirstVisible(infoPtr, NULL, TRUE);
1555         }
1556         else
1557             newFirstVisible = infoPtr->firstVisible;
1558
1559         TREEVIEW_RemoveItem(infoPtr, wineItem);
1560     }
1561
1562     /* Don't change if somebody else already has (infoPtr->selectedItem is cleared by FreeItem). */
1563     if (!infoPtr->selectedItem && newSelection)
1564     {
1565         if (TREEVIEW_ValidItem(infoPtr, newSelection))
1566             TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, newSelection, TVC_UNKNOWN);
1567     }
1568
1569     /* Validate insertMark dropItem.
1570      * hotItem ??? - used for comparison only.
1571      */
1572     if (!TREEVIEW_ValidItem(infoPtr, infoPtr->insertMarkItem))
1573         infoPtr->insertMarkItem = 0;
1574
1575     if (!TREEVIEW_ValidItem(infoPtr, infoPtr->dropItem))
1576         infoPtr->dropItem = 0;
1577
1578     if (!TREEVIEW_ValidItem(infoPtr, newFirstVisible))
1579         newFirstVisible = infoPtr->root->firstChild;
1580
1581     TREEVIEW_VerifyTree(infoPtr);
1582
1583
1584     if (visible)
1585     {
1586        TREEVIEW_SetFirstVisible(infoPtr, newFirstVisible, TRUE);
1587        TREEVIEW_RecalculateVisibleOrder(infoPtr, prev);
1588        TREEVIEW_UpdateScrollBars(infoPtr);
1589        TREEVIEW_Invalidate(infoPtr, NULL);
1590     }
1591     else if (ISVISIBLE(parent) && !TREEVIEW_HasChildren(infoPtr, parent))
1592     {
1593        /* parent lost '+/-' - update it */
1594        TREEVIEW_Invalidate(infoPtr, parent);
1595     }
1596
1597     return TRUE;
1598 }
1599
1600
1601 /* Get/Set Messages *********************************************************/
1602 static LRESULT
1603 TREEVIEW_SetRedraw(TREEVIEW_INFO* infoPtr, WPARAM wParam, LPARAM lParam)
1604 {
1605   if(wParam)
1606     infoPtr->bRedraw = TRUE;
1607   else
1608     infoPtr->bRedraw = FALSE;
1609
1610   return 0;
1611 }
1612
1613 static LRESULT
1614 TREEVIEW_GetIndent(TREEVIEW_INFO *infoPtr)
1615 {
1616     TRACE("\n");
1617     return infoPtr->uIndent;
1618 }
1619
1620 static LRESULT
1621 TREEVIEW_SetIndent(TREEVIEW_INFO *infoPtr, UINT newIndent)
1622 {
1623     TRACE("\n");
1624
1625     if (newIndent < MINIMUM_INDENT)
1626         newIndent = MINIMUM_INDENT;
1627
1628     if (infoPtr->uIndent != newIndent)
1629     {
1630         infoPtr->uIndent = newIndent;
1631         TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
1632         TREEVIEW_UpdateScrollBars(infoPtr);
1633         TREEVIEW_Invalidate(infoPtr, NULL);
1634     }
1635
1636     return 0;
1637 }
1638
1639
1640 static LRESULT
1641 TREEVIEW_GetToolTips(TREEVIEW_INFO *infoPtr)
1642 {
1643     TRACE("\n");
1644     return (LRESULT)infoPtr->hwndToolTip;
1645 }
1646
1647 static LRESULT
1648 TREEVIEW_SetToolTips(TREEVIEW_INFO *infoPtr, HWND hwndTT)
1649 {
1650     HWND prevToolTip;
1651
1652     TRACE("\n");
1653     prevToolTip = infoPtr->hwndToolTip;
1654     infoPtr->hwndToolTip = hwndTT;
1655
1656     return (LRESULT)prevToolTip;
1657 }
1658
1659 static LRESULT
1660 TREEVIEW_SetUnicodeFormat(TREEVIEW_INFO *infoPtr, BOOL fUnicode)
1661 {
1662     BOOL rc = infoPtr->bNtfUnicode;
1663     infoPtr->bNtfUnicode = fUnicode;
1664     return rc;
1665 }
1666
1667 static LRESULT
1668 TREEVIEW_GetUnicodeFormat(TREEVIEW_INFO *infoPtr)
1669 {
1670      return infoPtr->bNtfUnicode;
1671 }
1672
1673 static LRESULT
1674 TREEVIEW_GetScrollTime(TREEVIEW_INFO *infoPtr)
1675 {
1676     return infoPtr->uScrollTime;
1677 }
1678
1679 static LRESULT
1680 TREEVIEW_SetScrollTime(TREEVIEW_INFO *infoPtr, UINT uScrollTime)
1681 {
1682     UINT uOldScrollTime = infoPtr->uScrollTime;
1683
1684     infoPtr->uScrollTime = min(uScrollTime, 100);
1685
1686     return uOldScrollTime;
1687 }
1688
1689
1690 static LRESULT
1691 TREEVIEW_GetImageList(TREEVIEW_INFO *infoPtr, WPARAM wParam)
1692 {
1693     TRACE("\n");
1694
1695     switch (wParam)
1696     {
1697     case (WPARAM)TVSIL_NORMAL:
1698         return (LRESULT)infoPtr->himlNormal;
1699
1700     case (WPARAM)TVSIL_STATE:
1701         return (LRESULT)infoPtr->himlState;
1702
1703     default:
1704         return 0;
1705     }
1706 }
1707
1708 #define TVHEIGHT_MIN         16
1709 #define TVHEIGHT_FONT_ADJUST 3 /* 2 for focus border + 1 for margin some apps assume */
1710
1711 /* Compute the natural height for items. */
1712 static UINT
1713 TREEVIEW_NaturalHeight(TREEVIEW_INFO *infoPtr)
1714 {
1715     TEXTMETRICW tm;
1716     HDC hdc = GetDC(0);
1717     HFONT hOldFont = SelectObject(hdc, infoPtr->hFont);
1718     UINT height;
1719
1720     /* Height is the maximum of:
1721      * 16 (a hack because our fonts are tiny), and
1722      * The text height + border & margin, and
1723      * The size of the normal image list
1724      */
1725     GetTextMetricsW(hdc, &tm);
1726     SelectObject(hdc, hOldFont);
1727     ReleaseDC(0, hdc);
1728
1729     height = TVHEIGHT_MIN;
1730     if (height < tm.tmHeight + tm.tmExternalLeading + TVHEIGHT_FONT_ADJUST)
1731         height = tm.tmHeight + tm.tmExternalLeading + TVHEIGHT_FONT_ADJUST;
1732     if (height < infoPtr->normalImageHeight)
1733         height = infoPtr->normalImageHeight;
1734     return height;
1735 }
1736
1737 static LRESULT
1738 TREEVIEW_SetImageList(TREEVIEW_INFO *infoPtr, WPARAM wParam, HIMAGELIST himlNew)
1739 {
1740     HIMAGELIST himlOld = 0;
1741     int oldWidth  = infoPtr->normalImageWidth;
1742     int oldHeight = infoPtr->normalImageHeight;
1743
1744
1745     TRACE("%x,%p\n", wParam, himlNew);
1746
1747     switch (wParam)
1748     {
1749     case (WPARAM)TVSIL_NORMAL:
1750         himlOld = infoPtr->himlNormal;
1751         infoPtr->himlNormal = himlNew;
1752
1753         if (himlNew != NULL)
1754             ImageList_GetIconSize(himlNew, &infoPtr->normalImageWidth,
1755                                   &infoPtr->normalImageHeight);
1756         else
1757         {
1758             infoPtr->normalImageWidth = 0;
1759             infoPtr->normalImageHeight = 0;
1760         }
1761
1762         break;
1763
1764     case (WPARAM)TVSIL_STATE:
1765         himlOld = infoPtr->himlState;
1766         infoPtr->himlState = himlNew;
1767
1768         if (himlNew != NULL)
1769             ImageList_GetIconSize(himlNew, &infoPtr->stateImageWidth,
1770                                   &infoPtr->stateImageHeight);
1771         else
1772         {
1773             infoPtr->stateImageWidth = 0;
1774             infoPtr->stateImageHeight = 0;
1775         }
1776
1777         break;
1778     }
1779
1780     if (oldWidth != infoPtr->normalImageWidth ||
1781         oldHeight != infoPtr->normalImageHeight)
1782     {
1783         BOOL bRecalcVisible = FALSE;
1784
1785         if (oldHeight != infoPtr->normalImageHeight &&
1786             !infoPtr->bHeightSet)
1787         {
1788             infoPtr->uItemHeight = TREEVIEW_NaturalHeight(infoPtr);
1789             bRecalcVisible = TRUE;
1790         }
1791
1792         if (infoPtr->normalImageWidth > MINIMUM_INDENT &&
1793             infoPtr->normalImageWidth != infoPtr->uIndent)
1794         {
1795             infoPtr->uIndent = infoPtr->normalImageWidth;
1796             bRecalcVisible = TRUE;
1797         }
1798
1799         if (bRecalcVisible)
1800             TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
1801
1802        TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
1803        TREEVIEW_UpdateScrollBars(infoPtr);
1804     }
1805
1806     TREEVIEW_Invalidate(infoPtr, NULL);
1807
1808     return (LRESULT)himlOld;
1809 }
1810
1811 static LRESULT
1812 TREEVIEW_SetItemHeight(TREEVIEW_INFO *infoPtr, INT newHeight)
1813 {
1814     INT prevHeight = infoPtr->uItemHeight;
1815
1816     TRACE("%d\n", newHeight);
1817     if (newHeight == -1)
1818     {
1819         infoPtr->uItemHeight = TREEVIEW_NaturalHeight(infoPtr);
1820         infoPtr->bHeightSet = FALSE;
1821     }
1822     else
1823     {
1824         infoPtr->uItemHeight = newHeight;
1825         infoPtr->bHeightSet = TRUE;
1826     }
1827
1828     /* Round down, unless we support odd ("non even") heights. */
1829     if (!(infoPtr->dwStyle) & TVS_NONEVENHEIGHT)
1830         infoPtr->uItemHeight &= ~1;
1831
1832     if (infoPtr->uItemHeight != prevHeight)
1833     {
1834         TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
1835         TREEVIEW_UpdateScrollBars(infoPtr);
1836         TREEVIEW_Invalidate(infoPtr, NULL);
1837     }
1838
1839     return prevHeight;
1840 }
1841
1842 static LRESULT
1843 TREEVIEW_GetItemHeight(TREEVIEW_INFO *infoPtr)
1844 {
1845     TRACE("\n");
1846     return infoPtr->uItemHeight;
1847 }
1848
1849
1850 static LRESULT
1851 TREEVIEW_GetFont(TREEVIEW_INFO *infoPtr)
1852 {
1853     TRACE("%p\n", infoPtr->hFont);
1854     return (LRESULT)infoPtr->hFont;
1855 }
1856
1857
1858 static INT CALLBACK
1859 TREEVIEW_ResetTextWidth(LPVOID pItem, LPVOID unused)
1860 {
1861     (void)unused;
1862
1863     ((TREEVIEW_ITEM *)pItem)->textWidth = 0;
1864
1865     return 1;
1866 }
1867
1868 static LRESULT
1869 TREEVIEW_SetFont(TREEVIEW_INFO *infoPtr, HFONT hFont, BOOL bRedraw)
1870 {
1871     UINT uHeight = infoPtr->uItemHeight;
1872
1873     TRACE("%p %i\n", hFont, bRedraw);
1874
1875     infoPtr->hFont = hFont ? hFont : infoPtr->hDefaultFont;
1876
1877     DeleteObject(infoPtr->hBoldFont);
1878     infoPtr->hBoldFont = TREEVIEW_CreateBoldFont(infoPtr->hFont);
1879     infoPtr->hUnderlineFont = TREEVIEW_CreateUnderlineFont(infoPtr->hFont);
1880
1881     if (!infoPtr->bHeightSet)
1882         infoPtr->uItemHeight = TREEVIEW_NaturalHeight(infoPtr);
1883
1884     if (uHeight != infoPtr->uItemHeight)
1885        TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
1886
1887     DPA_EnumCallback(infoPtr->items, TREEVIEW_ResetTextWidth, 0);
1888
1889     TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
1890     TREEVIEW_UpdateScrollBars(infoPtr);
1891
1892     if (bRedraw)
1893         TREEVIEW_Invalidate(infoPtr, NULL);
1894
1895     return 0;
1896 }
1897
1898
1899 static LRESULT
1900 TREEVIEW_GetLineColor(TREEVIEW_INFO *infoPtr)
1901 {
1902     TRACE("\n");
1903     return (LRESULT)infoPtr->clrLine;
1904 }
1905
1906 static LRESULT
1907 TREEVIEW_SetLineColor(TREEVIEW_INFO *infoPtr, COLORREF color)
1908 {
1909     COLORREF prevColor = infoPtr->clrLine;
1910
1911     TRACE("\n");
1912     infoPtr->clrLine = color;
1913     return (LRESULT)prevColor;
1914 }
1915
1916
1917 static LRESULT
1918 TREEVIEW_GetTextColor(TREEVIEW_INFO *infoPtr)
1919 {
1920     TRACE("\n");
1921     return (LRESULT)infoPtr->clrText;
1922 }
1923
1924 static LRESULT
1925 TREEVIEW_SetTextColor(TREEVIEW_INFO *infoPtr, COLORREF color)
1926 {
1927     COLORREF prevColor = infoPtr->clrText;
1928
1929     TRACE("\n");
1930     infoPtr->clrText = color;
1931
1932     if (infoPtr->clrText != prevColor)
1933         TREEVIEW_Invalidate(infoPtr, NULL);
1934
1935     return (LRESULT)prevColor;
1936 }
1937
1938
1939 static LRESULT
1940 TREEVIEW_GetBkColor(TREEVIEW_INFO *infoPtr)
1941 {
1942     TRACE("\n");
1943     return (LRESULT)infoPtr->clrBk;
1944 }
1945
1946 static LRESULT
1947 TREEVIEW_SetBkColor(TREEVIEW_INFO *infoPtr, COLORREF newColor)
1948 {
1949     COLORREF prevColor = infoPtr->clrBk;
1950
1951     TRACE("\n");
1952     infoPtr->clrBk = newColor;
1953
1954     if (newColor != prevColor)
1955         TREEVIEW_Invalidate(infoPtr, NULL);
1956
1957     return (LRESULT)prevColor;
1958 }
1959
1960
1961 static LRESULT
1962 TREEVIEW_GetInsertMarkColor(TREEVIEW_INFO *infoPtr)
1963 {
1964     TRACE("\n");
1965     return (LRESULT)infoPtr->clrInsertMark;
1966 }
1967
1968 static LRESULT
1969 TREEVIEW_SetInsertMarkColor(TREEVIEW_INFO *infoPtr, COLORREF color)
1970 {
1971     COLORREF prevColor = infoPtr->clrInsertMark;
1972
1973     TRACE("%x\n", color);
1974     infoPtr->clrInsertMark = color;
1975
1976     return (LRESULT)prevColor;
1977 }
1978
1979
1980 static LRESULT
1981 TREEVIEW_SetInsertMark(TREEVIEW_INFO *infoPtr, BOOL wParam, HTREEITEM item)
1982 {
1983     TRACE("%d %p\n", wParam, item);
1984
1985     if (!TREEVIEW_ValidItem(infoPtr, item))
1986         return 0;
1987
1988     infoPtr->insertBeforeorAfter = wParam;
1989     infoPtr->insertMarkItem = item;
1990
1991     TREEVIEW_Invalidate(infoPtr, NULL);
1992
1993     return 1;
1994 }
1995
1996
1997 /************************************************************************
1998  * Some serious braindamage here. lParam is a pointer to both the
1999  * input HTREEITEM and the output RECT.
2000  */
2001 static LRESULT
2002 TREEVIEW_GetItemRect(TREEVIEW_INFO *infoPtr, BOOL fTextRect, LPRECT lpRect)
2003 {
2004     TREEVIEW_ITEM *wineItem;
2005     const HTREEITEM *pItem = (HTREEITEM *)lpRect;
2006
2007     TRACE("\n");
2008     /*
2009      * validate parameters
2010      */
2011     if (pItem == NULL)
2012         return FALSE;
2013
2014     wineItem = *pItem;
2015     if (!TREEVIEW_ValidItem(infoPtr, wineItem) || !ISVISIBLE(wineItem))
2016         return FALSE;
2017
2018     /*
2019      * If wParam is TRUE return the text size otherwise return
2020      * the whole item size
2021      */
2022     if (fTextRect)
2023     {
2024         /* Windows does not send TVN_GETDISPINFO here. */
2025
2026         lpRect->top = wineItem->rect.top;
2027         lpRect->bottom = wineItem->rect.bottom;
2028
2029         lpRect->left = wineItem->textOffset;
2030         lpRect->right = wineItem->textOffset + wineItem->textWidth;
2031     }
2032     else
2033     {
2034         *lpRect = wineItem->rect;
2035     }
2036
2037     TRACE("%s [L:%d R:%d T:%d B:%d]\n", fTextRect ? "text" : "item",
2038           lpRect->left, lpRect->right, lpRect->top, lpRect->bottom);
2039
2040     return TRUE;
2041 }
2042
2043 static inline LRESULT
2044 TREEVIEW_GetVisibleCount(TREEVIEW_INFO *infoPtr)
2045 {
2046     /* Suprise! This does not take integral height into account. */
2047     return infoPtr->clientHeight / infoPtr->uItemHeight;
2048 }
2049
2050
2051 static LRESULT
2052 TREEVIEW_GetItemT(TREEVIEW_INFO *infoPtr, LPTVITEMEXW tvItem, BOOL isW)
2053 {
2054     TREEVIEW_ITEM *wineItem;
2055
2056     wineItem = tvItem->hItem;
2057     if (!TREEVIEW_ValidItem(infoPtr, wineItem))
2058         return FALSE;
2059
2060     TREEVIEW_UpdateDispInfo(infoPtr, wineItem, tvItem->mask);
2061
2062     if (tvItem->mask & TVIF_CHILDREN)
2063     {
2064         if (wineItem->cChildren==I_CHILDRENCALLBACK)
2065             FIXME("I_CHILDRENCALLBACK not supported\n");
2066         tvItem->cChildren = wineItem->cChildren;
2067     }
2068
2069     if (tvItem->mask & TVIF_HANDLE)
2070         tvItem->hItem = wineItem;
2071
2072     if (tvItem->mask & TVIF_IMAGE)
2073         tvItem->iImage = wineItem->iImage;
2074
2075     if (tvItem->mask & TVIF_INTEGRAL)
2076         tvItem->iIntegral = wineItem->iIntegral;
2077
2078     /* undocumented: windows ignores TVIF_PARAM and
2079      * * always sets lParam
2080      */
2081     tvItem->lParam = wineItem->lParam;
2082
2083     if (tvItem->mask & TVIF_SELECTEDIMAGE)
2084         tvItem->iSelectedImage = wineItem->iSelectedImage;
2085
2086     if (tvItem->mask & TVIF_STATE)
2087         /* Careful here - Windows ignores the stateMask when you get the state
2088             That contradicts the documentation, but makes more common sense, masking
2089             retrieval in this way seems overkill */
2090         tvItem->state = wineItem->state;
2091
2092     if (tvItem->mask & TVIF_TEXT)
2093     {
2094         if (isW)
2095         {
2096             if (wineItem->pszText == LPSTR_TEXTCALLBACKW)
2097             {
2098                 tvItem->pszText = LPSTR_TEXTCALLBACKW;
2099                 FIXME(" GetItem called with LPSTR_TEXTCALLBACK\n");
2100             }
2101             else
2102             {
2103                 lstrcpynW(tvItem->pszText, wineItem->pszText, tvItem->cchTextMax);
2104             }
2105         }
2106         else
2107         {
2108             if (wineItem->pszText == LPSTR_TEXTCALLBACKW)
2109             {
2110                 tvItem->pszText = (LPWSTR)LPSTR_TEXTCALLBACKA;
2111                 FIXME(" GetItem called with LPSTR_TEXTCALLBACK\n");
2112             }
2113             else
2114             {
2115                 WideCharToMultiByte(CP_ACP, 0, wineItem->pszText, -1,
2116                                     (LPSTR)tvItem->pszText, tvItem->cchTextMax, NULL, NULL);
2117             }
2118         }
2119     }
2120     TRACE("item <%p>, txt %p, img %p, mask %x\n",
2121           wineItem, tvItem->pszText, &tvItem->iImage, tvItem->mask);
2122
2123     return TRUE;
2124 }
2125
2126 /* Beware MSDN Library Visual Studio 6.0. It says -1 on failure, 0 on success,
2127  * which is wrong. */
2128 static LRESULT
2129 TREEVIEW_SetItemT(TREEVIEW_INFO *infoPtr, LPTVITEMEXW tvItem, BOOL isW)
2130 {
2131     TREEVIEW_ITEM *wineItem;
2132     TREEVIEW_ITEM originalItem;
2133
2134     wineItem = tvItem->hItem;
2135
2136     TRACE("item %d,mask %x\n", TREEVIEW_GetItemIndex(infoPtr, wineItem),
2137           tvItem->mask);
2138
2139     if (!TREEVIEW_ValidItem(infoPtr, wineItem))
2140         return FALSE;
2141
2142     /* store the orignal item values */
2143     originalItem = *wineItem;
2144
2145     if (!TREEVIEW_DoSetItemT(infoPtr, wineItem, tvItem, isW))
2146         return FALSE;
2147
2148     /* If the text or TVIS_BOLD was changed, and it is visible, recalculate. */
2149     if ((tvItem->mask & TVIF_TEXT
2150          || (tvItem->mask & TVIF_STATE && tvItem->stateMask & TVIS_BOLD))
2151         && ISVISIBLE(wineItem))
2152     {
2153         TREEVIEW_UpdateDispInfo(infoPtr, wineItem, TVIF_TEXT);
2154         TREEVIEW_ComputeTextWidth(infoPtr, wineItem, 0);
2155     }
2156
2157     if (tvItem->mask != 0 && ISVISIBLE(wineItem))
2158     {
2159         /* The refresh updates everything, but we can't wait until then. */
2160         TREEVIEW_ComputeItemInternalMetrics(infoPtr, wineItem);
2161
2162         /* if any of the item's values changed and it's not a callback, redraw the item */
2163         if (item_changed(&originalItem, wineItem, tvItem))
2164         {
2165             if (tvItem->mask & TVIF_INTEGRAL)
2166             {
2167                 TREEVIEW_RecalculateVisibleOrder(infoPtr, wineItem);
2168                 TREEVIEW_UpdateScrollBars(infoPtr);
2169
2170                 TREEVIEW_Invalidate(infoPtr, NULL);
2171             }
2172             else
2173             {
2174                 TREEVIEW_UpdateScrollBars(infoPtr);
2175                 TREEVIEW_Invalidate(infoPtr, wineItem);
2176             }
2177         }
2178     }
2179
2180     return TRUE;
2181 }
2182
2183 static LRESULT
2184 TREEVIEW_GetItemState(TREEVIEW_INFO *infoPtr, HTREEITEM wineItem, UINT mask)
2185 {
2186     TRACE("\n");
2187
2188     if (!wineItem || !TREEVIEW_ValidItem(infoPtr, wineItem))
2189         return 0;
2190
2191     return (wineItem->state & mask);
2192 }
2193
2194 static LRESULT
2195 TREEVIEW_GetNextItem(TREEVIEW_INFO *infoPtr, UINT which, HTREEITEM wineItem)
2196 {
2197     TREEVIEW_ITEM *retval;
2198
2199     retval = 0;
2200
2201     /* handle all the global data here */
2202     switch (which)
2203     {
2204     case TVGN_CHILD:            /* Special case: child of 0 is root */
2205         if (wineItem)
2206             break;
2207         /* fall through */
2208     case TVGN_ROOT:
2209         retval = infoPtr->root->firstChild;
2210         break;
2211
2212     case TVGN_CARET:
2213         retval = infoPtr->selectedItem;
2214         break;
2215
2216     case TVGN_FIRSTVISIBLE:
2217         retval = infoPtr->firstVisible;
2218         break;
2219
2220     case TVGN_DROPHILITE:
2221         retval = infoPtr->dropItem;
2222         break;
2223
2224     case TVGN_LASTVISIBLE:
2225         retval = TREEVIEW_GetLastListItem(infoPtr, infoPtr->root);
2226         break;
2227     }
2228
2229     if (retval)
2230     {
2231         TRACE("flags:%x, returns %p\n", which, retval);
2232         return (LRESULT)retval;
2233     }
2234
2235     if (wineItem == TVI_ROOT) wineItem = infoPtr->root;
2236
2237     if (!TREEVIEW_ValidItem(infoPtr, wineItem))
2238         return FALSE;
2239
2240     switch (which)
2241     {
2242     case TVGN_NEXT:
2243         retval = wineItem->nextSibling;
2244         break;
2245     case TVGN_PREVIOUS:
2246         retval = wineItem->prevSibling;
2247         break;
2248     case TVGN_PARENT:
2249         retval = (wineItem->parent != infoPtr->root) ? wineItem->parent : NULL;
2250         break;
2251     case TVGN_CHILD:
2252         retval = wineItem->firstChild;
2253         break;
2254     case TVGN_NEXTVISIBLE:
2255         retval = TREEVIEW_GetNextListItem(infoPtr, wineItem);
2256         break;
2257     case TVGN_PREVIOUSVISIBLE:
2258         retval = TREEVIEW_GetPrevListItem(infoPtr, wineItem);
2259         break;
2260     default:
2261         TRACE("Unknown msg %x,item %p\n", which, wineItem);
2262         break;
2263     }
2264
2265     TRACE("flags:%x, item %p;returns %p\n", which, wineItem, retval);
2266     return (LRESULT)retval;
2267 }
2268
2269
2270 static LRESULT
2271 TREEVIEW_GetCount(TREEVIEW_INFO *infoPtr)
2272 {
2273     TRACE(" %d\n", infoPtr->uNumItems);
2274     return (LRESULT)infoPtr->uNumItems;
2275 }
2276
2277 static VOID
2278 TREEVIEW_ToggleItemState(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
2279 {
2280     if (infoPtr->dwStyle & TVS_CHECKBOXES)
2281     {
2282         static const unsigned int state_table[] = { 0, 2, 1 };
2283
2284         unsigned int state;
2285
2286         state = STATEIMAGEINDEX(item->state);
2287         TRACE("state:%x\n", state);
2288         item->state &= ~TVIS_STATEIMAGEMASK;
2289
2290         if (state < 3)
2291             state = state_table[state];
2292
2293         item->state |= INDEXTOSTATEIMAGEMASK(state);
2294
2295         TRACE("state:%x\n", state);
2296         TREEVIEW_Invalidate(infoPtr, item);
2297     }
2298 }
2299
2300
2301 /* Painting *************************************************************/
2302
2303 /* Draw the lines and expand button for an item. Also draws one section
2304  * of the line from item's parent to item's parent's next sibling. */
2305 static void
2306 TREEVIEW_DrawItemLines(TREEVIEW_INFO *infoPtr, HDC hdc, TREEVIEW_ITEM *item)
2307 {
2308     LONG centerx, centery;
2309     BOOL lar = ((infoPtr->dwStyle
2310                  & (TVS_LINESATROOT|TVS_HASLINES|TVS_HASBUTTONS))
2311                 > TVS_LINESATROOT);
2312     HBRUSH hbr, hbrOld;
2313
2314     if (!lar && item->iLevel == 0)
2315         return;
2316
2317     hbr    = CreateSolidBrush(infoPtr->clrBk);
2318     hbrOld = SelectObject(hdc, hbr);
2319
2320     centerx = (item->linesOffset + item->stateOffset) / 2;
2321     centery = (item->rect.top + item->rect.bottom) / 2;
2322
2323     if (infoPtr->dwStyle & TVS_HASLINES)
2324     {
2325         HPEN hOldPen, hNewPen;
2326         HTREEITEM parent;
2327         LOGBRUSH lb;
2328
2329         /*
2330          * Get a dotted grey pen
2331          */
2332         lb.lbStyle = BS_SOLID;
2333         lb.lbColor = infoPtr->clrLine;
2334         hNewPen = ExtCreatePen(PS_COSMETIC|PS_ALTERNATE, 1, &lb, 0, NULL);
2335         hOldPen = SelectObject(hdc, hNewPen);
2336
2337         MoveToEx(hdc, item->stateOffset, centery, NULL);
2338         LineTo(hdc, centerx - 1, centery);
2339
2340         if (item->prevSibling || item->parent != infoPtr->root)
2341         {
2342             MoveToEx(hdc, centerx, item->rect.top, NULL);
2343             LineTo(hdc, centerx, centery);
2344         }
2345
2346         if (item->nextSibling)
2347         {
2348             MoveToEx(hdc, centerx, centery, NULL);
2349             LineTo(hdc, centerx, item->rect.bottom + 1);
2350         }
2351
2352         /* Draw the line from our parent to its next sibling. */
2353         parent = item->parent;
2354         while (parent != infoPtr->root)
2355         {
2356             int pcenterx = (parent->linesOffset + parent->stateOffset) / 2;
2357
2358             if (parent->nextSibling
2359                 /* skip top-levels unless TVS_LINESATROOT */
2360                 && parent->stateOffset > parent->linesOffset)
2361             {
2362                 MoveToEx(hdc, pcenterx, item->rect.top, NULL);
2363                 LineTo(hdc, pcenterx, item->rect.bottom + 1);
2364             }
2365
2366             parent = parent->parent;
2367         }
2368
2369         SelectObject(hdc, hOldPen);
2370         DeleteObject(hNewPen);
2371     }
2372
2373     /*
2374      * Display the (+/-) signs
2375      */
2376
2377     if (infoPtr->dwStyle & TVS_HASBUTTONS)
2378     {
2379         if (item->cChildren)
2380         {
2381             HTHEME theme = GetWindowTheme(infoPtr->hwnd);
2382             if (theme)
2383             {
2384                 RECT glyphRect = item->rect;
2385                 glyphRect.left = item->linesOffset;
2386                 glyphRect.right = item->stateOffset;
2387                 DrawThemeBackground (theme, hdc, TVP_GLYPH,
2388                     (item->state & TVIS_EXPANDED) ? GLPS_OPENED : GLPS_CLOSED,
2389                     &glyphRect, NULL);
2390             }
2391             else
2392             {
2393                 LONG height = item->rect.bottom - item->rect.top;
2394                 LONG width  = item->stateOffset - item->linesOffset;
2395                 LONG rectsize = min(height, width) / 4;
2396                 /* plussize = ceil(rectsize * 3/4) */
2397                 LONG plussize = (rectsize + 1) * 3 / 4;
2398
2399                 HPEN hNewPen  = CreatePen(PS_SOLID, 0, infoPtr->clrLine);
2400                 HPEN hOldPen  = SelectObject(hdc, hNewPen);
2401
2402                 Rectangle(hdc, centerx - rectsize - 1, centery - rectsize - 1,
2403                           centerx + rectsize + 2, centery + rectsize + 2);
2404
2405                 SelectObject(hdc, hOldPen);
2406                 DeleteObject(hNewPen);
2407
2408                 if (height < 18 || width < 18)
2409                 {
2410                     MoveToEx(hdc, centerx - plussize + 1, centery, NULL);
2411                     LineTo(hdc, centerx + plussize, centery);
2412
2413                     if (!(item->state & TVIS_EXPANDED))
2414                     {
2415                         MoveToEx(hdc, centerx, centery - plussize + 1, NULL);
2416                         LineTo(hdc, centerx, centery + plussize);
2417                     }
2418                 }
2419                 else
2420                 {
2421                     Rectangle(hdc, centerx - plussize + 1, centery - 1,
2422                     centerx + plussize, centery + 2);
2423
2424                     if (!(item->state & TVIS_EXPANDED))
2425                     {
2426                         Rectangle(hdc, centerx - 1, centery - plussize + 1,
2427                         centerx + 2, centery + plussize);
2428                         SetPixel(hdc, centerx - 1, centery, infoPtr->clrBk);
2429                         SetPixel(hdc, centerx + 1, centery, infoPtr->clrBk);
2430                     }
2431                 }
2432             }
2433         }
2434     }
2435     SelectObject(hdc, hbrOld);
2436     DeleteObject(hbr);
2437 }
2438
2439 static void
2440 TREEVIEW_DrawItem(TREEVIEW_INFO *infoPtr, HDC hdc, TREEVIEW_ITEM *wineItem)
2441 {
2442     INT cditem;
2443     HFONT hOldFont;
2444     COLORREF oldTextColor, oldTextBkColor;
2445     int centery;
2446     BOOL inFocus = (GetFocus() == infoPtr->hwnd);
2447     NMTVCUSTOMDRAW nmcdhdr;
2448
2449     TREEVIEW_UpdateDispInfo(infoPtr, wineItem, CALLBACK_MASK_ALL);
2450
2451     /* - If item is drop target or it is selected and window is in focus -
2452      * use blue background (COLOR_HIGHLIGHT).
2453      * - If item is selected, window is not in focus, but it has style
2454      * TVS_SHOWSELALWAYS - use grey background (COLOR_BTNFACE)
2455      * - Otherwise - use background color
2456      */
2457     if ((wineItem->state & TVIS_DROPHILITED) || ((wineItem == infoPtr->focusedItem) && !(wineItem->state & TVIS_SELECTED)) ||
2458         ((wineItem->state & TVIS_SELECTED) && (!infoPtr->focusedItem) &&
2459          (inFocus || (infoPtr->dwStyle & TVS_SHOWSELALWAYS))))
2460     {
2461         if ((wineItem->state & TVIS_DROPHILITED) || inFocus)
2462         {
2463             nmcdhdr.clrTextBk = GetSysColor(COLOR_HIGHLIGHT);
2464             nmcdhdr.clrText   = GetSysColor(COLOR_HIGHLIGHTTEXT);
2465         }
2466         else
2467         {
2468             nmcdhdr.clrTextBk = GetSysColor(COLOR_BTNFACE);
2469             if (infoPtr->clrText == -1)
2470                 nmcdhdr.clrText = GetSysColor(COLOR_WINDOWTEXT);
2471             else
2472                 nmcdhdr.clrText = infoPtr->clrText;
2473         }
2474     }
2475     else
2476     {
2477         nmcdhdr.clrTextBk = infoPtr->clrBk;
2478         if ((infoPtr->dwStyle & TVS_TRACKSELECT) && (wineItem == infoPtr->hotItem))
2479             nmcdhdr.clrText = comctl32_color.clrHighlight;
2480         else if (infoPtr->clrText == -1)
2481             nmcdhdr.clrText = GetSysColor(COLOR_WINDOWTEXT);
2482         else
2483             nmcdhdr.clrText = infoPtr->clrText;
2484     }
2485
2486     hOldFont = SelectObject(hdc, TREEVIEW_FontForItem(infoPtr, wineItem));
2487
2488     /* The custom draw handler can query the text rectangle,
2489      * so get ready. */
2490     /* should already be known, set to 0 when changed */
2491     if (!wineItem->textWidth)
2492         TREEVIEW_ComputeTextWidth(infoPtr, wineItem, hdc);
2493
2494     cditem = 0;
2495
2496     if (infoPtr->cdmode & CDRF_NOTIFYITEMDRAW)
2497     {
2498         cditem = TREEVIEW_SendCustomDrawItemNotify
2499             (infoPtr, hdc, wineItem, CDDS_ITEMPREPAINT, &nmcdhdr);
2500         TRACE("prepaint:cditem-app returns 0x%x\n", cditem);
2501
2502         if (cditem & CDRF_SKIPDEFAULT)
2503         {
2504             SelectObject(hdc, hOldFont);
2505             return;
2506         }
2507     }
2508
2509     if (cditem & CDRF_NEWFONT)
2510         TREEVIEW_ComputeTextWidth(infoPtr, wineItem, hdc);
2511
2512     TREEVIEW_DrawItemLines(infoPtr, hdc, wineItem);
2513
2514     /* Set colors. Custom draw handler can change these so we do this after it. */
2515     oldTextColor = SetTextColor(hdc, nmcdhdr.clrText);
2516     oldTextBkColor = SetBkColor(hdc, nmcdhdr.clrTextBk);
2517
2518     centery = (wineItem->rect.top + wineItem->rect.bottom) / 2;
2519
2520     /*
2521      * Display the images associated with this item
2522      */
2523     {
2524         INT imageIndex;
2525
2526         /* State images are displayed to the left of the Normal image
2527          * image number is in state; zero should be `display no image'.
2528          */
2529         imageIndex = STATEIMAGEINDEX(wineItem->state);
2530
2531         if (infoPtr->himlState && imageIndex)
2532         {
2533             ImageList_Draw(infoPtr->himlState, imageIndex, hdc,
2534                            wineItem->stateOffset,
2535                            centery - infoPtr->stateImageHeight / 2,
2536                            ILD_NORMAL);
2537         }
2538
2539         /* Now, draw the normal image; can be either selected or
2540          * non-selected image.
2541          */
2542
2543         if ((wineItem->state & TVIS_SELECTED) && (wineItem->iSelectedImage >= 0))
2544         {
2545             /* The item is currently selected */
2546             imageIndex = wineItem->iSelectedImage;
2547         }
2548         else
2549         {
2550             /* The item is not selected */
2551             imageIndex = wineItem->iImage;
2552         }
2553
2554         if (infoPtr->himlNormal)
2555         {
2556             int ovlIdx = wineItem->state & TVIS_OVERLAYMASK;
2557
2558             ImageList_Draw(infoPtr->himlNormal, imageIndex, hdc,
2559                            wineItem->imageOffset,
2560                            centery - infoPtr->normalImageHeight / 2,
2561                            ILD_NORMAL | ovlIdx);
2562         }
2563     }
2564
2565
2566     /*
2567      * Display the text associated with this item
2568      */
2569
2570     /* Don't paint item's text if it's being edited */
2571     if (!infoPtr->hwndEdit || (infoPtr->selectedItem != wineItem))
2572     {
2573         if (wineItem->pszText)
2574         {
2575             RECT rcText;
2576
2577             rcText.top = wineItem->rect.top;
2578             rcText.bottom = wineItem->rect.bottom;
2579             rcText.left = wineItem->textOffset;
2580             rcText.right = rcText.left + wineItem->textWidth + 4;
2581
2582             TRACE("drawing text %s at (%d,%d)-(%d,%d)\n",
2583                   debugstr_w(wineItem->pszText),
2584                   rcText.left, rcText.top, rcText.right, rcText.bottom);
2585
2586             /* Draw it */
2587             ExtTextOutW(hdc, rcText.left + 2, rcText.top + 1,
2588                         ETO_CLIPPED | ETO_OPAQUE,
2589                         &rcText,
2590                         wineItem->pszText,
2591                         lstrlenW(wineItem->pszText),
2592                         NULL);
2593
2594             /* Draw the box around the selected item */
2595             if ((wineItem == infoPtr->selectedItem) && inFocus)
2596             {
2597                 DrawFocusRect(hdc,&rcText);
2598             }
2599
2600         }
2601     }
2602
2603     /* Draw insertion mark if necessary */
2604
2605     if (infoPtr->insertMarkItem)
2606         TRACE("item:%d,mark:%p\n",
2607               TREEVIEW_GetItemIndex(infoPtr, wineItem),
2608               infoPtr->insertMarkItem);
2609
2610     if (wineItem == infoPtr->insertMarkItem)
2611     {
2612         HPEN hNewPen, hOldPen;
2613         int offset;
2614         int left, right;
2615
2616         hNewPen = CreatePen(PS_SOLID, 2, infoPtr->clrInsertMark);
2617         hOldPen = SelectObject(hdc, hNewPen);
2618
2619         if (infoPtr->insertBeforeorAfter)
2620             offset = wineItem->rect.bottom - 1;
2621         else
2622             offset = wineItem->rect.top + 1;
2623
2624         left = wineItem->textOffset - 2;
2625         right = wineItem->textOffset + wineItem->textWidth + 2;
2626
2627         MoveToEx(hdc, left, offset - 3, NULL);
2628         LineTo(hdc, left, offset + 4);
2629
2630         MoveToEx(hdc, left, offset, NULL);
2631         LineTo(hdc, right + 1, offset);
2632
2633         MoveToEx(hdc, right, offset + 3, NULL);
2634         LineTo(hdc, right, offset - 4);
2635
2636         SelectObject(hdc, hOldPen);
2637         DeleteObject(hNewPen);
2638     }
2639
2640     if (cditem & CDRF_NOTIFYPOSTPAINT)
2641     {
2642         cditem = TREEVIEW_SendCustomDrawItemNotify
2643             (infoPtr, hdc, wineItem, CDDS_ITEMPOSTPAINT, &nmcdhdr);
2644         TRACE("postpaint:cditem-app returns 0x%x\n", cditem);
2645     }
2646
2647     /* Restore the hdc state */
2648     SetTextColor(hdc, oldTextColor);
2649     SetBkColor(hdc, oldTextBkColor);
2650     SelectObject(hdc, hOldFont);
2651 }
2652
2653 /* Computes treeHeight and treeWidth and updates the scroll bars.
2654  */
2655 static void
2656 TREEVIEW_UpdateScrollBars(TREEVIEW_INFO *infoPtr)
2657 {
2658     TREEVIEW_ITEM *wineItem;
2659     HWND hwnd = infoPtr->hwnd;
2660     BOOL vert = FALSE;
2661     BOOL horz = FALSE;
2662     SCROLLINFO si;
2663     LONG scrollX = infoPtr->scrollX;
2664
2665     infoPtr->treeWidth = 0;
2666     infoPtr->treeHeight = 0;
2667
2668     /* We iterate through all visible items in order to get the tree height
2669      * and width */
2670     wineItem = infoPtr->root->firstChild;
2671
2672     while (wineItem != NULL)
2673     {
2674         if (ISVISIBLE(wineItem))
2675         {
2676             /* actually we draw text at textOffset + 2 */
2677             if (2+wineItem->textOffset+wineItem->textWidth > infoPtr->treeWidth)
2678                 infoPtr->treeWidth = wineItem->textOffset+wineItem->textWidth+2;
2679
2680             /* This is scroll-adjusted, but we fix this below. */
2681             infoPtr->treeHeight = wineItem->rect.bottom;
2682         }
2683
2684         wineItem = TREEVIEW_GetNextListItem(infoPtr, wineItem);
2685     }
2686
2687     /* Fix the scroll adjusted treeHeight and treeWidth. */
2688     if (infoPtr->root->firstChild)
2689         infoPtr->treeHeight -= infoPtr->root->firstChild->rect.top;
2690
2691     infoPtr->treeWidth += infoPtr->scrollX;
2692
2693     if (infoPtr->dwStyle & TVS_NOSCROLL) return;
2694
2695     /* Adding one scroll bar may take up enough space that it forces us
2696      * to add the other as well. */
2697     if (infoPtr->treeHeight > infoPtr->clientHeight)
2698     {
2699         vert = TRUE;
2700
2701         if (infoPtr->treeWidth
2702             > infoPtr->clientWidth - GetSystemMetrics(SM_CXVSCROLL))
2703             horz = TRUE;
2704     }
2705     else if (infoPtr->treeWidth > infoPtr->clientWidth)
2706         horz = TRUE;
2707
2708     if (!vert && horz && infoPtr->treeHeight
2709         > infoPtr->clientHeight - GetSystemMetrics(SM_CYVSCROLL))
2710         vert = TRUE;
2711
2712     if (horz && (infoPtr->dwStyle & TVS_NOHSCROLL)) horz = FALSE;
2713
2714     si.cbSize = sizeof(SCROLLINFO);
2715     si.fMask  = SIF_POS|SIF_RANGE|SIF_PAGE;
2716     si.nMin   = 0;
2717
2718     if (vert)
2719     {
2720         si.nPage = TREEVIEW_GetVisibleCount(infoPtr);
2721        if ( si.nPage && NULL != infoPtr->firstVisible)
2722        {
2723            si.nPos  = infoPtr->firstVisible->visibleOrder;
2724            si.nMax  = infoPtr->maxVisibleOrder - 1;
2725
2726            SetScrollInfo(hwnd, SB_VERT, &si, TRUE);
2727
2728            if (!(infoPtr->uInternalStatus & TV_VSCROLL))
2729                ShowScrollBar(hwnd, SB_VERT, TRUE);
2730            infoPtr->uInternalStatus |= TV_VSCROLL;
2731        }
2732        else
2733        {
2734            if (infoPtr->uInternalStatus & TV_VSCROLL)
2735                ShowScrollBar(hwnd, SB_VERT, FALSE);
2736            infoPtr->uInternalStatus &= ~TV_VSCROLL;
2737        }
2738     }
2739     else
2740     {
2741         if (infoPtr->uInternalStatus & TV_VSCROLL)
2742             ShowScrollBar(hwnd, SB_VERT, FALSE);
2743         infoPtr->uInternalStatus &= ~TV_VSCROLL;
2744     }
2745
2746     if (horz)
2747     {
2748         si.nPage = infoPtr->clientWidth;
2749         si.nPos  = infoPtr->scrollX;
2750         si.nMax  = infoPtr->treeWidth - 1;
2751
2752         if (si.nPos > si.nMax - max( si.nPage-1, 0 ))
2753         {
2754            si.nPos = si.nMax - max( si.nPage-1, 0 );
2755            scrollX = si.nPos;
2756         }
2757
2758         if (!(infoPtr->uInternalStatus & TV_HSCROLL))
2759             ShowScrollBar(hwnd, SB_HORZ, TRUE);
2760         infoPtr->uInternalStatus |= TV_HSCROLL;
2761
2762         SetScrollInfo(hwnd, SB_HORZ, &si, TRUE);
2763     }
2764     else
2765     {
2766         if (infoPtr->uInternalStatus & TV_HSCROLL)
2767             ShowScrollBar(hwnd, SB_HORZ, FALSE);
2768         infoPtr->uInternalStatus &= ~TV_HSCROLL;
2769
2770         scrollX = 0;
2771     }
2772
2773     if (infoPtr->scrollX != scrollX)
2774     {
2775         TREEVIEW_HScroll(infoPtr,
2776                          MAKEWPARAM(SB_THUMBPOSITION, scrollX));
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 (infoPtr->hwndEdit)
4657         SetFocus(infoPtr->hwnd);
4658
4659     if (!oldFirstVisible)
4660     {
4661         assert(infoPtr->root->firstChild == NULL);
4662         return 0;
4663     }
4664
4665     switch (nScrollCode)
4666     {
4667     case SB_TOP:
4668         newFirstVisible = infoPtr->root->firstChild;
4669         break;
4670
4671     case SB_BOTTOM:
4672         newFirstVisible = TREEVIEW_GetLastListItem(infoPtr, infoPtr->root);
4673         break;
4674
4675     case SB_LINEUP:
4676         newFirstVisible = TREEVIEW_GetPrevListItem(infoPtr, oldFirstVisible);
4677         break;
4678
4679     case SB_LINEDOWN:
4680         newFirstVisible = TREEVIEW_GetNextListItem(infoPtr, oldFirstVisible);
4681         break;
4682
4683     case SB_PAGEUP:
4684         newFirstVisible = TREEVIEW_GetListItem(infoPtr, oldFirstVisible,
4685                                                -max(1, TREEVIEW_GetVisibleCount(infoPtr)));
4686         break;
4687
4688     case SB_PAGEDOWN:
4689         newFirstVisible = TREEVIEW_GetListItem(infoPtr, oldFirstVisible,
4690                                                max(1, TREEVIEW_GetVisibleCount(infoPtr)));
4691         break;
4692
4693     case SB_THUMBTRACK:
4694     case SB_THUMBPOSITION:
4695         newFirstVisible = TREEVIEW_GetListItem(infoPtr,
4696                                                infoPtr->root->firstChild,
4697                                                (LONG)(SHORT)HIWORD(wParam));
4698         break;
4699
4700     case SB_ENDSCROLL:
4701         return 0;
4702     }
4703
4704     if (newFirstVisible != NULL)
4705     {
4706         if (newFirstVisible != oldFirstVisible)
4707             TREEVIEW_SetFirstVisible(infoPtr, newFirstVisible,
4708                                   nScrollCode != SB_THUMBTRACK);
4709         else if (nScrollCode == SB_THUMBPOSITION)
4710             SetScrollPos(infoPtr->hwnd, SB_VERT,
4711                          newFirstVisible->visibleOrder, TRUE);
4712     }
4713
4714     return 0;
4715 }
4716
4717 static LRESULT
4718 TREEVIEW_HScroll(TREEVIEW_INFO *infoPtr, WPARAM wParam)
4719 {
4720     int maxWidth;
4721     int scrollX = infoPtr->scrollX;
4722     int nScrollCode = LOWORD(wParam);
4723
4724     TRACE("wp %x\n", wParam);
4725
4726     if (!(infoPtr->uInternalStatus & TV_HSCROLL))
4727         return FALSE;
4728
4729     if (infoPtr->hwndEdit)
4730         SetFocus(infoPtr->hwnd);
4731
4732     maxWidth = infoPtr->treeWidth - infoPtr->clientWidth;
4733     /* shall never occur */
4734     if (maxWidth <= 0)
4735     {
4736        scrollX = 0;
4737        goto scroll;
4738     }
4739
4740     switch (nScrollCode)
4741     {
4742     case SB_LINELEFT:
4743         scrollX -= infoPtr->uItemHeight;
4744         break;
4745     case SB_LINERIGHT:
4746         scrollX += infoPtr->uItemHeight;
4747         break;
4748     case SB_PAGELEFT:
4749         scrollX -= infoPtr->clientWidth;
4750         break;
4751     case SB_PAGERIGHT:
4752         scrollX += infoPtr->clientWidth;
4753         break;
4754
4755     case SB_THUMBTRACK:
4756     case SB_THUMBPOSITION:
4757         scrollX = (int)(SHORT)HIWORD(wParam);
4758         break;
4759
4760     case SB_ENDSCROLL:
4761        return 0;
4762     }
4763
4764     if (scrollX > maxWidth)
4765         scrollX = maxWidth;
4766     else if (scrollX < 0)
4767         scrollX = 0;
4768
4769 scroll:
4770     if (scrollX != infoPtr->scrollX)
4771     {
4772         TREEVIEW_ITEM *item;
4773         LONG scroll_pixels = infoPtr->scrollX - scrollX;
4774
4775         for (item = infoPtr->root->firstChild; item != NULL;
4776              item = TREEVIEW_GetNextListItem(infoPtr, item))
4777         {
4778            item->linesOffset += scroll_pixels;
4779            item->stateOffset += scroll_pixels;
4780            item->imageOffset += scroll_pixels;
4781            item->textOffset  += scroll_pixels;
4782         }
4783
4784         ScrollWindow(infoPtr->hwnd, scroll_pixels, 0, NULL, NULL);
4785         infoPtr->scrollX = scrollX;
4786         UpdateWindow(infoPtr->hwnd);
4787     }
4788
4789     if (nScrollCode != SB_THUMBTRACK)
4790        SetScrollPos(infoPtr->hwnd, SB_HORZ, scrollX, TRUE);
4791
4792     return 0;
4793 }
4794
4795 static LRESULT
4796 TREEVIEW_MouseWheel(TREEVIEW_INFO *infoPtr, WPARAM wParam)
4797 {
4798     short gcWheelDelta;
4799     UINT pulScrollLines = 3;
4800
4801     if (infoPtr->firstVisible == NULL)
4802         return TRUE;
4803
4804     SystemParametersInfoW(SPI_GETWHEELSCROLLLINES, 0, &pulScrollLines, 0);
4805
4806     gcWheelDelta = -(short)HIWORD(wParam);
4807     pulScrollLines *= (gcWheelDelta / WHEEL_DELTA);
4808
4809     if (abs(gcWheelDelta) >= WHEEL_DELTA && pulScrollLines)
4810     {
4811         int newDy = infoPtr->firstVisible->visibleOrder + pulScrollLines;
4812         int maxDy = infoPtr->maxVisibleOrder;
4813
4814         if (newDy > maxDy)
4815             newDy = maxDy;
4816
4817         if (newDy < 0)
4818             newDy = 0;
4819
4820         TREEVIEW_VScroll(infoPtr, MAKEWPARAM(SB_THUMBPOSITION, newDy));
4821     }
4822     return TRUE;
4823 }
4824
4825 /* Create/Destroy *******************************************************/
4826
4827 static LRESULT
4828 TREEVIEW_Create(HWND hwnd, const CREATESTRUCTW *lpcs)
4829 {
4830     RECT rcClient;
4831     TREEVIEW_INFO *infoPtr;
4832     LOGFONTW lf;
4833
4834     TRACE("wnd %p, style %x\n", hwnd, GetWindowLongW(hwnd, GWL_STYLE));
4835
4836     infoPtr = (TREEVIEW_INFO *)Alloc(sizeof(TREEVIEW_INFO));
4837
4838     if (infoPtr == NULL)
4839     {
4840         ERR("could not allocate info memory!\n");
4841         return 0;
4842     }
4843
4844     SetWindowLongPtrW(hwnd, 0, (DWORD_PTR)infoPtr);
4845
4846     infoPtr->hwnd = hwnd;
4847     infoPtr->dwStyle = GetWindowLongW(hwnd, GWL_STYLE);
4848     infoPtr->Timer = 0;
4849     infoPtr->uNumItems = 0;
4850     infoPtr->cdmode = 0;
4851     infoPtr->uScrollTime = 300; /* milliseconds */
4852     infoPtr->bRedraw = TRUE;
4853
4854     GetClientRect(hwnd, &rcClient);
4855
4856     /* No scroll bars yet. */
4857     infoPtr->clientWidth = rcClient.right;
4858     infoPtr->clientHeight = rcClient.bottom;
4859     infoPtr->uInternalStatus = 0;
4860
4861     infoPtr->treeWidth = 0;
4862     infoPtr->treeHeight = 0;
4863
4864     infoPtr->uIndent = MINIMUM_INDENT;
4865     infoPtr->selectedItem = 0;
4866     infoPtr->focusedItem = 0;
4867     infoPtr->hotItem = 0;
4868     infoPtr->firstVisible = 0;
4869     infoPtr->maxVisibleOrder = 0;
4870     infoPtr->dropItem = 0;
4871     infoPtr->insertMarkItem = 0;
4872     infoPtr->insertBeforeorAfter = 0;
4873     /* dragList */
4874
4875     infoPtr->scrollX = 0;
4876
4877     infoPtr->clrBk = GetSysColor(COLOR_WINDOW);
4878     infoPtr->clrText = -1;      /* use system color */
4879     infoPtr->clrLine = RGB(128, 128, 128);
4880     infoPtr->clrInsertMark = GetSysColor(COLOR_BTNTEXT);
4881
4882     /* hwndToolTip */
4883
4884     infoPtr->hwndEdit = 0;
4885     infoPtr->wpEditOrig = NULL;
4886     infoPtr->bIgnoreEditKillFocus = FALSE;
4887     infoPtr->bLabelChanged = FALSE;
4888
4889     infoPtr->himlNormal = NULL;
4890     infoPtr->himlState = NULL;
4891     infoPtr->normalImageWidth = 0;
4892     infoPtr->normalImageHeight = 0;
4893     infoPtr->stateImageWidth = 0;
4894     infoPtr->stateImageHeight = 0;
4895
4896     infoPtr->items = DPA_Create(16);
4897
4898     SystemParametersInfoW(SPI_GETICONTITLELOGFONT, sizeof(lf), &lf, 0);
4899     infoPtr->hFont = infoPtr->hDefaultFont = CreateFontIndirectW(&lf);
4900     infoPtr->hBoldFont = TREEVIEW_CreateBoldFont(infoPtr->hFont);
4901     infoPtr->hUnderlineFont = TREEVIEW_CreateUnderlineFont(infoPtr->hFont);
4902     infoPtr->hcurHand = LoadCursorW(NULL, (LPWSTR)IDC_HAND);
4903
4904     infoPtr->uItemHeight = TREEVIEW_NaturalHeight(infoPtr);
4905
4906     infoPtr->root = TREEVIEW_AllocateItem(infoPtr);
4907     infoPtr->root->state = TVIS_EXPANDED;
4908     infoPtr->root->iLevel = -1;
4909     infoPtr->root->visibleOrder = -1;
4910
4911     infoPtr->hwndNotify = lpcs->hwndParent;
4912 #if 0
4913     infoPtr->bTransparent = ( GetWindowLongW( hwnd, GWL_STYLE) & TBSTYLE_FLAT);
4914 #endif
4915
4916     infoPtr->hwndToolTip = 0;
4917
4918     infoPtr->bNtfUnicode = IsWindowUnicode (hwnd);
4919
4920     /* Determine what type of notify should be issued */
4921     /* sets infoPtr->bNtfUnicode */
4922     TREEVIEW_NotifyFormat(infoPtr, infoPtr->hwndNotify, NF_REQUERY);
4923
4924     if (!(infoPtr->dwStyle & TVS_NOTOOLTIPS))
4925         infoPtr->hwndToolTip = COMCTL32_CreateToolTip(hwnd);
4926
4927     if (infoPtr->dwStyle & TVS_CHECKBOXES)
4928     {
4929         RECT rc;
4930         HBITMAP hbm, hbmOld;
4931         HDC hdc,hdcScreen;
4932         int nIndex;
4933
4934         infoPtr->himlState =
4935             ImageList_Create(16, 16, ILC_COLOR | ILC_MASK, 3, 0);
4936
4937         hdcScreen = GetDC(0);
4938
4939         /* Create a coloured bitmap compatible with the screen depth
4940            because checkboxes are not black&white */
4941         hdc = CreateCompatibleDC(hdcScreen);
4942         hbm = CreateCompatibleBitmap(hdcScreen, 48, 16);
4943         hbmOld = SelectObject(hdc, hbm);
4944
4945         rc.left  = 0;   rc.top    = 0;
4946         rc.right = 48;  rc.bottom = 16;
4947         FillRect(hdc, &rc, (HBRUSH)(COLOR_WINDOW+1));
4948
4949         rc.left  = 18;   rc.top    = 2;
4950         rc.right = 30;   rc.bottom = 14;
4951         DrawFrameControl(hdc, &rc, DFC_BUTTON,
4952                           DFCS_BUTTONCHECK|DFCS_FLAT);
4953
4954         rc.left  = 34;   rc.right  = 46;
4955         DrawFrameControl(hdc, &rc, DFC_BUTTON,
4956                           DFCS_BUTTONCHECK|DFCS_FLAT|DFCS_CHECKED);
4957
4958         SelectObject(hdc, hbmOld);
4959         nIndex = ImageList_AddMasked(infoPtr->himlState, hbm,
4960                                       GetSysColor(COLOR_WINDOW));
4961         TRACE("checkbox index %d\n", nIndex);
4962
4963         DeleteObject(hbm);
4964         DeleteDC(hdc);
4965         ReleaseDC(0, hdcScreen);
4966
4967         infoPtr->stateImageWidth = 16;
4968         infoPtr->stateImageHeight = 16;
4969     }
4970
4971     /* Make sure actual scrollbar state is consistent with uInternalStatus */
4972     ShowScrollBar(hwnd, SB_VERT, FALSE);
4973     ShowScrollBar(hwnd, SB_HORZ, FALSE);
4974
4975     OpenThemeData (hwnd, themeClass);
4976
4977     return 0;
4978 }
4979
4980
4981 static LRESULT
4982 TREEVIEW_Destroy(TREEVIEW_INFO *infoPtr)
4983 {
4984     TRACE("\n");
4985
4986     TREEVIEW_RemoveTree(infoPtr);
4987
4988     /* tool tip is automatically destroyed: we are its owner */
4989
4990     /* Restore original wndproc */
4991     if (infoPtr->hwndEdit)
4992         SetWindowLongPtrW(infoPtr->hwndEdit, GWLP_WNDPROC,
4993                        (DWORD_PTR)infoPtr->wpEditOrig);
4994
4995     CloseThemeData (GetWindowTheme (infoPtr->hwnd));
4996
4997     /* Deassociate treeview from the window before doing anything drastic. */
4998     SetWindowLongPtrW(infoPtr->hwnd, 0, (DWORD_PTR)NULL);
4999
5000
5001     DeleteObject(infoPtr->hDefaultFont);
5002     DeleteObject(infoPtr->hBoldFont);
5003     DeleteObject(infoPtr->hUnderlineFont);
5004     Free(infoPtr);
5005
5006     return 0;
5007 }
5008
5009 /* Miscellaneous Messages ***********************************************/
5010
5011 static LRESULT
5012 TREEVIEW_ScrollKeyDown(TREEVIEW_INFO *infoPtr, WPARAM key)
5013 {
5014     static const struct
5015     {
5016         unsigned char code;
5017     }
5018     scroll[] =
5019     {
5020 #define SCROLL_ENTRY(dir, code) { ((dir) << 7) | (code) }
5021         SCROLL_ENTRY(SB_VERT, SB_PAGEUP),       /* VK_PRIOR */
5022         SCROLL_ENTRY(SB_VERT, SB_PAGEDOWN),     /* VK_NEXT */
5023         SCROLL_ENTRY(SB_VERT, SB_BOTTOM),       /* VK_END */
5024         SCROLL_ENTRY(SB_VERT, SB_TOP),          /* VK_HOME */
5025         SCROLL_ENTRY(SB_HORZ, SB_LINEUP),       /* VK_LEFT */
5026         SCROLL_ENTRY(SB_VERT, SB_LINEUP),       /* VK_UP */
5027         SCROLL_ENTRY(SB_HORZ, SB_LINEDOWN),     /* VK_RIGHT */
5028         SCROLL_ENTRY(SB_VERT, SB_LINEDOWN)      /* VK_DOWN */
5029 #undef SCROLL_ENTRY
5030     };
5031
5032     if (key >= VK_PRIOR && key <= VK_DOWN)
5033     {
5034         unsigned char code = scroll[key - VK_PRIOR].code;
5035
5036         (((code & (1 << 7)) == (SB_HORZ << 7))
5037          ? TREEVIEW_HScroll
5038          : TREEVIEW_VScroll)(infoPtr, code & 0x7F);
5039     }
5040
5041     return 0;
5042 }
5043
5044 /************************************************************************
5045  *        TREEVIEW_KeyDown
5046  *
5047  * VK_UP       Move selection to the previous non-hidden item.
5048  * VK_DOWN     Move selection to the next non-hidden item.
5049  * VK_HOME     Move selection to the first item.
5050  * VK_END      Move selection to the last item.
5051  * VK_LEFT     If expanded then collapse, otherwise move to parent.
5052  * VK_RIGHT    If collapsed then expand, otherwise move to first child.
5053  * VK_ADD      Expand.
5054  * VK_SUBTRACT Collapse.
5055  * VK_MULTIPLY Expand all.
5056  * VK_PRIOR    Move up GetVisibleCount items.
5057  * VK_NEXT     Move down GetVisibleCount items.
5058  * VK_BACK     Move to parent.
5059  * CTRL-Left,Right,Up,Down,PgUp,PgDown,Home,End: Scroll without changing selection
5060  */
5061 static LRESULT
5062 TREEVIEW_KeyDown(TREEVIEW_INFO *infoPtr, WPARAM wParam)
5063 {
5064     /* If it is non-NULL and different, it will be selected and visible. */
5065     TREEVIEW_ITEM *newSelection = NULL;
5066
5067     TREEVIEW_ITEM *prevItem = infoPtr->selectedItem;
5068
5069     TRACE("%x\n", wParam);
5070
5071     if (prevItem == NULL)
5072         return FALSE;
5073
5074     if (GetAsyncKeyState(VK_CONTROL) & 0x8000)
5075         return TREEVIEW_ScrollKeyDown(infoPtr, wParam);
5076
5077     switch (wParam)
5078     {
5079     case VK_UP:
5080         newSelection = TREEVIEW_GetPrevListItem(infoPtr, prevItem);
5081         if (!newSelection)
5082             newSelection = infoPtr->root->firstChild;
5083         break;
5084
5085     case VK_DOWN:
5086         newSelection = TREEVIEW_GetNextListItem(infoPtr, prevItem);
5087         break;
5088
5089     case VK_HOME:
5090         newSelection = infoPtr->root->firstChild;
5091         break;
5092
5093     case VK_END:
5094         newSelection = TREEVIEW_GetLastListItem(infoPtr, infoPtr->root);
5095         break;
5096
5097     case VK_LEFT:
5098         if (prevItem->state & TVIS_EXPANDED)
5099         {
5100             TREEVIEW_Collapse(infoPtr, prevItem, FALSE, TRUE);
5101         }
5102         else if (prevItem->parent != infoPtr->root)
5103         {
5104             newSelection = prevItem->parent;
5105         }
5106         break;
5107
5108     case VK_RIGHT:
5109         if (TREEVIEW_HasChildren(infoPtr, prevItem))
5110         {
5111             if (!(prevItem->state & TVIS_EXPANDED))
5112                 TREEVIEW_Expand(infoPtr, prevItem, FALSE, TRUE);
5113             else
5114             {
5115                 newSelection = prevItem->firstChild;
5116             }
5117         }
5118
5119         break;
5120
5121     case VK_MULTIPLY:
5122         TREEVIEW_ExpandAll(infoPtr, prevItem);
5123         break;
5124
5125     case VK_ADD:
5126         if (!(prevItem->state & TVIS_EXPANDED))
5127             TREEVIEW_Expand(infoPtr, prevItem, FALSE, TRUE);
5128         break;
5129
5130     case VK_SUBTRACT:
5131         if (prevItem->state & TVIS_EXPANDED)
5132             TREEVIEW_Collapse(infoPtr, prevItem, FALSE, TRUE);
5133         break;
5134
5135     case VK_PRIOR:
5136         newSelection
5137             = TREEVIEW_GetListItem(infoPtr, prevItem,
5138                                    -TREEVIEW_GetVisibleCount(infoPtr));
5139         break;
5140
5141     case VK_NEXT:
5142         newSelection
5143             = TREEVIEW_GetListItem(infoPtr, prevItem,
5144                                    TREEVIEW_GetVisibleCount(infoPtr));
5145         break;
5146
5147     case VK_BACK:
5148         newSelection = prevItem->parent;
5149         if (newSelection == infoPtr->root)
5150             newSelection = NULL;
5151         break;
5152
5153     case VK_SPACE:
5154         if (infoPtr->dwStyle & TVS_CHECKBOXES)
5155             TREEVIEW_ToggleItemState(infoPtr, prevItem);
5156         break;
5157     }
5158
5159     if (newSelection && newSelection != prevItem)
5160     {
5161         if (TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, newSelection,
5162                                   TVC_BYKEYBOARD))
5163         {
5164             TREEVIEW_EnsureVisible(infoPtr, newSelection, FALSE);
5165         }
5166     }
5167
5168     return FALSE;
5169 }
5170
5171 static LRESULT
5172 TREEVIEW_MouseLeave (TREEVIEW_INFO * infoPtr)
5173 {
5174     if (infoPtr->hotItem)
5175     {
5176         /* remove hot effect from item */
5177         InvalidateRect(infoPtr->hwnd, &infoPtr->hotItem->rect, TRUE);
5178         infoPtr->hotItem = NULL;
5179     }
5180     return 0;
5181 }
5182
5183 static LRESULT
5184 TREEVIEW_MouseMove (TREEVIEW_INFO * infoPtr, WPARAM wParam, LPARAM lParam)
5185 {
5186     POINT pt;
5187     TRACKMOUSEEVENT trackinfo;
5188     TREEVIEW_ITEM * item;
5189
5190     /* fill in the TRACKMOUSEEVENT struct */
5191     trackinfo.cbSize = sizeof(TRACKMOUSEEVENT);
5192     trackinfo.dwFlags = TME_QUERY;
5193     trackinfo.hwndTrack = infoPtr->hwnd;
5194     trackinfo.dwHoverTime = HOVER_DEFAULT;
5195
5196     /* call _TrackMouseEvent to see if we are currently tracking for this hwnd */
5197     _TrackMouseEvent(&trackinfo);
5198
5199     /* Make sure tracking is enabled so we receive a WM_MOUSELEAVE message */
5200     if(!(trackinfo.dwFlags & TME_LEAVE))
5201     {
5202         trackinfo.dwFlags = TME_LEAVE; /* notify upon leaving */
5203
5204         /* call TRACKMOUSEEVENT so we receive a WM_MOUSELEAVE message */
5205         /* and can properly deactivate the hot item */
5206         _TrackMouseEvent(&trackinfo);
5207     }
5208
5209     pt.x = (short)LOWORD(lParam);
5210     pt.y = (short)HIWORD(lParam);
5211
5212     item = TREEVIEW_HitTestPoint(infoPtr, pt);
5213
5214     if (item != infoPtr->hotItem)
5215     {
5216         /* redraw old hot item */
5217         if (infoPtr->hotItem)
5218             InvalidateRect(infoPtr->hwnd, &infoPtr->hotItem->rect, TRUE);
5219         infoPtr->hotItem = item;
5220         /* redraw new hot item */
5221         if (infoPtr->hotItem)
5222             InvalidateRect(infoPtr->hwnd, &infoPtr->hotItem->rect, TRUE);
5223     }
5224
5225     return 0;
5226 }
5227
5228 /* Draw themed border */
5229 static BOOL nc_paint (TREEVIEW_INFO *infoPtr, HRGN region)
5230 {
5231     HTHEME theme = GetWindowTheme (infoPtr->hwnd);
5232     HDC dc;
5233     RECT r;
5234     HRGN cliprgn;
5235     int cxEdge = GetSystemMetrics (SM_CXEDGE),
5236         cyEdge = GetSystemMetrics (SM_CYEDGE);
5237
5238     if (!theme) return FALSE;
5239
5240     GetWindowRect(infoPtr->hwnd, &r);
5241
5242     cliprgn = CreateRectRgn (r.left + cxEdge, r.top + cyEdge,
5243         r.right - cxEdge, r.bottom - cyEdge);
5244     if (region != (HRGN)1)
5245         CombineRgn (cliprgn, cliprgn, region, RGN_AND);
5246     OffsetRect(&r, -r.left, -r.top);
5247
5248     dc = GetDCEx(infoPtr->hwnd, region, DCX_WINDOW|DCX_INTERSECTRGN);
5249     OffsetRect(&r, -r.left, -r.top);
5250
5251     if (IsThemeBackgroundPartiallyTransparent (theme, 0, 0))
5252         DrawThemeParentBackground(infoPtr->hwnd, dc, &r);
5253     DrawThemeBackground (theme, dc, 0, 0, &r, 0);
5254     ReleaseDC(infoPtr->hwnd, dc);
5255
5256     /* Call default proc to get the scrollbars etc. painted */
5257     DefWindowProcW (infoPtr->hwnd, WM_NCPAINT, (WPARAM)cliprgn, 0);
5258
5259     return TRUE;
5260 }
5261
5262 static LRESULT
5263 TREEVIEW_Notify(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
5264 {
5265     LPNMHDR lpnmh = (LPNMHDR)lParam;
5266
5267     if (lpnmh->code == PGN_CALCSIZE) {
5268         LPNMPGCALCSIZE lppgc = (LPNMPGCALCSIZE)lParam;
5269
5270         if (lppgc->dwFlag == PGF_CALCWIDTH) {
5271             lppgc->iWidth = infoPtr->treeWidth;
5272             TRACE("got PGN_CALCSIZE, returning horz size = %d, client=%d\n",
5273                   infoPtr->treeWidth, infoPtr->clientWidth);
5274         }
5275         else {
5276             lppgc->iHeight = infoPtr->treeHeight;
5277             TRACE("got PGN_CALCSIZE, returning vert size = %d, client=%d\n",
5278                   infoPtr->treeHeight, infoPtr->clientHeight);
5279         }
5280         return 0;
5281     }
5282     return DefWindowProcW(infoPtr->hwnd, WM_NOTIFY, wParam, lParam);
5283 }
5284
5285 static INT TREEVIEW_NotifyFormat (TREEVIEW_INFO *infoPtr, HWND hwndFrom, UINT nCommand)
5286 {
5287     INT format;
5288
5289     TRACE("(hwndFrom=%p, nCommand=%d)\n", hwndFrom, nCommand);
5290
5291     if (nCommand != NF_REQUERY) return 0;
5292
5293     format = SendMessageW(hwndFrom, WM_NOTIFYFORMAT, (WPARAM)infoPtr->hwnd, NF_QUERY);
5294     TRACE("format=%d\n", format);
5295
5296     if (format != NFR_ANSI && format != NFR_UNICODE) return 0;
5297
5298     infoPtr->bNtfUnicode = (format == NFR_UNICODE);
5299
5300     return format;
5301 }
5302
5303 static LRESULT
5304 TREEVIEW_Size(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
5305 {
5306     if (wParam == SIZE_RESTORED)
5307     {
5308         infoPtr->clientWidth  = (short)LOWORD(lParam);
5309         infoPtr->clientHeight = (short)HIWORD(lParam);
5310
5311         TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
5312         TREEVIEW_SetFirstVisible(infoPtr, infoPtr->firstVisible, TRUE);
5313         TREEVIEW_UpdateScrollBars(infoPtr);
5314     }
5315     else
5316     {
5317         FIXME("WM_SIZE flag %x %lx not handled\n", wParam, lParam);
5318     }
5319
5320     TREEVIEW_Invalidate(infoPtr, NULL);
5321     return 0;
5322 }
5323
5324 static LRESULT
5325 TREEVIEW_StyleChanged(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
5326 {
5327     TRACE("(%x %lx)\n", wParam, lParam);
5328
5329     if (wParam == GWL_STYLE)
5330     {
5331        DWORD dwNewStyle = ((LPSTYLESTRUCT)lParam)->styleNew;
5332
5333        /* we have to take special care about tooltips */
5334        if ((infoPtr->dwStyle ^ dwNewStyle) & TVS_NOTOOLTIPS)
5335        {
5336           if (infoPtr->dwStyle & TVS_NOTOOLTIPS)
5337           {
5338               infoPtr->hwndToolTip = COMCTL32_CreateToolTip(infoPtr->hwnd);
5339               TRACE("\n");
5340           }
5341           else
5342           {
5343              DestroyWindow(infoPtr->hwndToolTip);
5344              infoPtr->hwndToolTip = 0;
5345           }
5346        }
5347
5348        infoPtr->dwStyle = dwNewStyle;
5349     }
5350
5351     TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
5352     TREEVIEW_UpdateScrollBars(infoPtr);
5353     TREEVIEW_Invalidate(infoPtr, NULL);
5354
5355     return 0;
5356 }
5357
5358 static LRESULT
5359 TREEVIEW_SetCursor(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
5360 {
5361     POINT pt;
5362     TREEVIEW_ITEM * item;
5363
5364     GetCursorPos(&pt);
5365     ScreenToClient(infoPtr->hwnd, &pt);
5366
5367     item = TREEVIEW_HitTestPoint(infoPtr, pt);
5368
5369     /* FIXME: send NM_SETCURSOR */
5370
5371     if (item && (infoPtr->dwStyle & TVS_TRACKSELECT))
5372     {
5373         SetCursor(infoPtr->hcurHand);
5374         return 0;
5375     }
5376     else
5377         return DefWindowProcW(infoPtr->hwnd, WM_SETCURSOR, wParam, lParam);
5378 }
5379
5380 static LRESULT
5381 TREEVIEW_SetFocus(TREEVIEW_INFO *infoPtr)
5382 {
5383     TRACE("\n");
5384
5385     if (!infoPtr->selectedItem)
5386     {
5387         TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, infoPtr->firstVisible,
5388                               TVC_UNKNOWN);
5389     }
5390
5391     TREEVIEW_Invalidate(infoPtr, infoPtr->selectedItem);
5392     TREEVIEW_SendSimpleNotify(infoPtr, NM_SETFOCUS);
5393     return 0;
5394 }
5395
5396 static LRESULT
5397 TREEVIEW_KillFocus(TREEVIEW_INFO *infoPtr)
5398 {
5399     TRACE("\n");
5400
5401     TREEVIEW_Invalidate(infoPtr, infoPtr->selectedItem);
5402     UpdateWindow(infoPtr->hwnd);
5403     TREEVIEW_SendSimpleNotify(infoPtr, NM_KILLFOCUS);
5404     return 0;
5405 }
5406
5407 /* update theme after a WM_THEMECHANGED message */
5408 static LRESULT theme_changed (TREEVIEW_INFO* infoPtr)
5409 {
5410     HTHEME theme = GetWindowTheme (infoPtr->hwnd);
5411     CloseThemeData (theme);
5412     OpenThemeData (infoPtr->hwnd, themeClass);
5413     return 0;
5414 }
5415
5416
5417 static LRESULT WINAPI
5418 TREEVIEW_WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
5419 {
5420     TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
5421
5422     TRACE("hwnd %p msg %04x wp=%08x lp=%08lx\n", hwnd, uMsg, wParam, lParam);
5423
5424     if (infoPtr) TREEVIEW_VerifyTree(infoPtr);
5425     else
5426     {
5427         if (uMsg == WM_CREATE)
5428             TREEVIEW_Create(hwnd, (LPCREATESTRUCTW)lParam);
5429         else
5430             goto def;
5431     }
5432
5433     switch (uMsg)
5434     {
5435     case TVM_CREATEDRAGIMAGE:
5436         return TREEVIEW_CreateDragImage(infoPtr, wParam, lParam);
5437
5438     case TVM_DELETEITEM:
5439         return TREEVIEW_DeleteItem(infoPtr, (HTREEITEM)lParam);
5440
5441     case TVM_EDITLABELA:
5442         return (LRESULT)TREEVIEW_EditLabel(infoPtr, (HTREEITEM)lParam);
5443
5444     case TVM_EDITLABELW:
5445         return (LRESULT)TREEVIEW_EditLabel(infoPtr, (HTREEITEM)lParam);
5446
5447     case TVM_ENDEDITLABELNOW:
5448         return TREEVIEW_EndEditLabelNow(infoPtr, (BOOL)wParam);
5449
5450     case TVM_ENSUREVISIBLE:
5451         return TREEVIEW_EnsureVisible(infoPtr, (HTREEITEM)lParam, TRUE);
5452
5453     case TVM_EXPAND:
5454         return TREEVIEW_ExpandMsg(infoPtr, (UINT)wParam, (HTREEITEM)lParam);
5455
5456     case TVM_GETBKCOLOR:
5457         return TREEVIEW_GetBkColor(infoPtr);
5458
5459     case TVM_GETCOUNT:
5460         return TREEVIEW_GetCount(infoPtr);
5461
5462     case TVM_GETEDITCONTROL:
5463         return TREEVIEW_GetEditControl(infoPtr);
5464
5465     case TVM_GETIMAGELIST:
5466         return TREEVIEW_GetImageList(infoPtr, wParam);
5467
5468     case TVM_GETINDENT:
5469         return TREEVIEW_GetIndent(infoPtr);
5470
5471     case TVM_GETINSERTMARKCOLOR:
5472         return TREEVIEW_GetInsertMarkColor(infoPtr);
5473
5474     case TVM_GETISEARCHSTRINGA:
5475         FIXME("Unimplemented msg TVM_GETISEARCHSTRINGA\n");
5476         return 0;
5477
5478     case TVM_GETISEARCHSTRINGW:
5479         FIXME("Unimplemented msg TVM_GETISEARCHSTRINGW\n");
5480         return 0;
5481
5482     case TVM_GETITEMA:
5483         return TREEVIEW_GetItemT(infoPtr, (LPTVITEMEXW)lParam, FALSE);
5484
5485     case TVM_GETITEMW:
5486         return TREEVIEW_GetItemT(infoPtr, (LPTVITEMEXW)lParam, TRUE);
5487
5488     case TVM_GETITEMHEIGHT:
5489         return TREEVIEW_GetItemHeight(infoPtr);
5490
5491     case TVM_GETITEMRECT:
5492         return TREEVIEW_GetItemRect(infoPtr, (BOOL)wParam, (LPRECT)lParam);
5493
5494     case TVM_GETITEMSTATE:
5495         return TREEVIEW_GetItemState(infoPtr, (HTREEITEM)wParam, (UINT)lParam);
5496
5497     case TVM_GETLINECOLOR:
5498         return TREEVIEW_GetLineColor(infoPtr);
5499
5500     case TVM_GETNEXTITEM:
5501         return TREEVIEW_GetNextItem(infoPtr, (UINT)wParam, (HTREEITEM)lParam);
5502
5503     case TVM_GETSCROLLTIME:
5504         return TREEVIEW_GetScrollTime(infoPtr);
5505
5506     case TVM_GETTEXTCOLOR:
5507         return TREEVIEW_GetTextColor(infoPtr);
5508
5509     case TVM_GETTOOLTIPS:
5510         return TREEVIEW_GetToolTips(infoPtr);
5511
5512     case TVM_GETUNICODEFORMAT:
5513         return TREEVIEW_GetUnicodeFormat(infoPtr);
5514
5515     case TVM_GETVISIBLECOUNT:
5516         return TREEVIEW_GetVisibleCount(infoPtr);
5517
5518     case TVM_HITTEST:
5519         return TREEVIEW_HitTest(infoPtr, (LPTVHITTESTINFO)lParam);
5520
5521     case TVM_INSERTITEMA:
5522         return TREEVIEW_InsertItemT(infoPtr, (LPTVINSERTSTRUCTW)lParam, FALSE);
5523
5524     case TVM_INSERTITEMW:
5525         return TREEVIEW_InsertItemT(infoPtr, (LPTVINSERTSTRUCTW)lParam, TRUE);
5526
5527     case TVM_SELECTITEM:
5528         return TREEVIEW_SelectItem(infoPtr, (INT)wParam, (HTREEITEM)lParam);
5529
5530     case TVM_SETBKCOLOR:
5531         return TREEVIEW_SetBkColor(infoPtr, (COLORREF)lParam);
5532
5533     case TVM_SETIMAGELIST:
5534         return TREEVIEW_SetImageList(infoPtr, wParam, (HIMAGELIST)lParam);
5535
5536     case TVM_SETINDENT:
5537         return TREEVIEW_SetIndent(infoPtr, (UINT)wParam);
5538
5539     case TVM_SETINSERTMARK:
5540         return TREEVIEW_SetInsertMark(infoPtr, (BOOL)wParam, (HTREEITEM)lParam);
5541
5542     case TVM_SETINSERTMARKCOLOR:
5543         return TREEVIEW_SetInsertMarkColor(infoPtr, (COLORREF)lParam);
5544
5545     case TVM_SETITEMA:
5546         return TREEVIEW_SetItemT(infoPtr, (LPTVITEMEXW)lParam, FALSE);
5547
5548     case TVM_SETITEMW:
5549         return TREEVIEW_SetItemT(infoPtr, (LPTVITEMEXW)lParam, TRUE);
5550
5551     case TVM_SETLINECOLOR:
5552         return TREEVIEW_SetLineColor(infoPtr, (COLORREF)lParam);
5553
5554     case TVM_SETITEMHEIGHT:
5555         return TREEVIEW_SetItemHeight(infoPtr, (INT)(SHORT)wParam);
5556
5557     case TVM_SETSCROLLTIME:
5558         return TREEVIEW_SetScrollTime(infoPtr, (UINT)wParam);
5559
5560     case TVM_SETTEXTCOLOR:
5561         return TREEVIEW_SetTextColor(infoPtr, (COLORREF)lParam);
5562
5563     case TVM_SETTOOLTIPS:
5564         return TREEVIEW_SetToolTips(infoPtr, (HWND)wParam);
5565
5566     case TVM_SETUNICODEFORMAT:
5567         return TREEVIEW_SetUnicodeFormat(infoPtr, (BOOL)wParam);
5568
5569     case TVM_SORTCHILDREN:
5570         return TREEVIEW_SortChildren(infoPtr, wParam, lParam);
5571
5572     case TVM_SORTCHILDRENCB:
5573         return TREEVIEW_SortChildrenCB(infoPtr, wParam, (LPTVSORTCB)lParam);
5574
5575     case WM_CHAR:
5576         return TREEVIEW_ProcessLetterKeys( hwnd, wParam, lParam );
5577
5578     case WM_COMMAND:
5579         return TREEVIEW_Command(infoPtr, wParam, lParam);
5580
5581     case WM_DESTROY:
5582         return TREEVIEW_Destroy(infoPtr);
5583
5584         /* WM_ENABLE */
5585
5586     case WM_ERASEBKGND:
5587         return TREEVIEW_EraseBackground(infoPtr, (HDC)wParam);
5588
5589     case WM_GETDLGCODE:
5590         return DLGC_WANTARROWS | DLGC_WANTCHARS;
5591
5592     case WM_GETFONT:
5593         return TREEVIEW_GetFont(infoPtr);
5594
5595     case WM_HSCROLL:
5596         return TREEVIEW_HScroll(infoPtr, wParam);
5597
5598     case WM_KEYDOWN:
5599         return TREEVIEW_KeyDown(infoPtr, wParam);
5600
5601     case WM_KILLFOCUS:
5602         return TREEVIEW_KillFocus(infoPtr);
5603
5604     case WM_LBUTTONDBLCLK:
5605         return TREEVIEW_LButtonDoubleClick(infoPtr, lParam);
5606
5607     case WM_LBUTTONDOWN:
5608         return TREEVIEW_LButtonDown(infoPtr, lParam);
5609
5610         /* WM_MBUTTONDOWN */
5611
5612     case WM_MOUSELEAVE:
5613         return TREEVIEW_MouseLeave(infoPtr);
5614
5615     case WM_MOUSEMOVE:
5616         if (infoPtr->dwStyle & TVS_TRACKSELECT)
5617             return TREEVIEW_MouseMove(infoPtr, wParam, lParam);
5618         else
5619             return 0;
5620
5621     case WM_NCPAINT:
5622         if (nc_paint (infoPtr, (HRGN)wParam))
5623             return 0;
5624         goto def;
5625
5626     case WM_NOTIFY:
5627         return TREEVIEW_Notify(infoPtr, wParam, lParam);
5628
5629     case WM_NOTIFYFORMAT:
5630         return TREEVIEW_NotifyFormat(infoPtr, (HWND)wParam, (UINT)lParam);
5631
5632     case WM_PRINTCLIENT:
5633     case WM_PAINT:
5634         return TREEVIEW_Paint(infoPtr, wParam);
5635
5636     case WM_RBUTTONDOWN:
5637         return TREEVIEW_RButtonDown(infoPtr, lParam);
5638
5639     case WM_SETCURSOR:
5640         return TREEVIEW_SetCursor(infoPtr, wParam, lParam);
5641
5642     case WM_SETFOCUS:
5643         return TREEVIEW_SetFocus(infoPtr);
5644
5645     case WM_SETFONT:
5646         return TREEVIEW_SetFont(infoPtr, (HFONT)wParam, (BOOL)lParam);
5647
5648     case WM_SETREDRAW:
5649         return TREEVIEW_SetRedraw(infoPtr, wParam, lParam);
5650
5651     case WM_SIZE:
5652         return TREEVIEW_Size(infoPtr, wParam, lParam);
5653
5654     case WM_STYLECHANGED:
5655         return TREEVIEW_StyleChanged(infoPtr, wParam, lParam);
5656
5657         /* WM_SYSCOLORCHANGE */
5658
5659         /* WM_SYSKEYDOWN */
5660
5661     case WM_TIMER:
5662         return TREEVIEW_HandleTimer(infoPtr, wParam);
5663
5664     case WM_THEMECHANGED:
5665         return theme_changed (infoPtr);
5666
5667     case WM_VSCROLL:
5668         return TREEVIEW_VScroll(infoPtr, wParam);
5669
5670         /* WM_WININICHANGE */
5671
5672     case WM_MOUSEWHEEL:
5673         if (wParam & (MK_SHIFT | MK_CONTROL))
5674             goto def;
5675         return TREEVIEW_MouseWheel(infoPtr, wParam);
5676
5677     case WM_DRAWITEM:
5678         TRACE("drawItem\n");
5679         goto def;
5680
5681     default:
5682         /* This mostly catches MFC and Delphi messages. :( */
5683         if ((uMsg >= WM_USER) && (uMsg < WM_APP))
5684             TRACE("Unknown msg %04x wp=%08x lp=%08lx\n", uMsg, wParam, lParam);
5685 def:
5686         return DefWindowProcW(hwnd, uMsg, wParam, lParam);
5687     }
5688 }
5689
5690
5691 /* Class Registration ***************************************************/
5692
5693 VOID
5694 TREEVIEW_Register(void)
5695 {
5696     WNDCLASSW wndClass;
5697
5698     TRACE("\n");
5699
5700     ZeroMemory(&wndClass, sizeof(WNDCLASSW));
5701     wndClass.style = CS_GLOBALCLASS | CS_DBLCLKS;
5702     wndClass.lpfnWndProc = TREEVIEW_WindowProc;
5703     wndClass.cbClsExtra = 0;
5704     wndClass.cbWndExtra = sizeof(TREEVIEW_INFO *);
5705
5706     wndClass.hCursor = LoadCursorW(0, (LPWSTR)IDC_ARROW);
5707     wndClass.hbrBackground = 0;
5708     wndClass.lpszClassName = WC_TREEVIEWW;
5709
5710     RegisterClassW(&wndClass);
5711 }
5712
5713
5714 VOID
5715 TREEVIEW_Unregister(void)
5716 {
5717     UnregisterClassW(WC_TREEVIEWW, NULL);
5718 }
5719
5720
5721 /* Tree Verification ****************************************************/
5722
5723 #ifdef NDEBUG
5724 static inline void
5725 TREEVIEW_VerifyChildren(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item);
5726
5727 static inline void TREEVIEW_VerifyItemCommon(TREEVIEW_INFO *infoPtr,
5728                                              TREEVIEW_ITEM *item)
5729 {
5730     assert(infoPtr != NULL);
5731     assert(item != NULL);
5732
5733     /* both NULL, or both non-null */
5734     assert((item->firstChild == NULL) == (item->lastChild == NULL));
5735
5736     assert(item->firstChild != item);
5737     assert(item->lastChild != item);
5738
5739     if (item->firstChild)
5740     {
5741         assert(item->firstChild->parent == item);
5742         assert(item->firstChild->prevSibling == NULL);
5743     }
5744
5745     if (item->lastChild)
5746     {
5747         assert(item->lastChild->parent == item);
5748         assert(item->lastChild->nextSibling == NULL);
5749     }
5750
5751     assert(item->nextSibling != item);
5752     if (item->nextSibling)
5753     {
5754         assert(item->nextSibling->parent == item->parent);
5755         assert(item->nextSibling->prevSibling == item);
5756     }
5757
5758     assert(item->prevSibling != item);
5759     if (item->prevSibling)
5760     {
5761         assert(item->prevSibling->parent == item->parent);
5762         assert(item->prevSibling->nextSibling == item);
5763     }
5764 }
5765
5766 static inline void
5767 TREEVIEW_VerifyItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
5768 {
5769     assert(item != NULL);
5770
5771     assert(item->parent != NULL);
5772     assert(item->parent != item);
5773     assert(item->iLevel == item->parent->iLevel + 1);
5774
5775     assert(DPA_GetPtrIndex(infoPtr->items, item) != -1);
5776
5777     TREEVIEW_VerifyItemCommon(infoPtr, item);
5778
5779     TREEVIEW_VerifyChildren(infoPtr, item);
5780 }
5781
5782 static inline void
5783 TREEVIEW_VerifyChildren(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
5784 {
5785     TREEVIEW_ITEM *child;
5786     assert(item != NULL);
5787
5788     for (child = item->firstChild; child != NULL; child = child->nextSibling)
5789         TREEVIEW_VerifyItem(infoPtr, child);
5790 }
5791
5792 static inline void
5793 TREEVIEW_VerifyRoot(TREEVIEW_INFO *infoPtr)
5794 {
5795     TREEVIEW_ITEM *root = infoPtr->root;
5796
5797     assert(root != NULL);
5798     assert(root->iLevel == -1);
5799     assert(root->parent == NULL);
5800     assert(root->prevSibling == NULL);
5801
5802     TREEVIEW_VerifyItemCommon(infoPtr, root);
5803
5804     TREEVIEW_VerifyChildren(infoPtr, root);
5805 }
5806
5807 static void
5808 TREEVIEW_VerifyTree(TREEVIEW_INFO *infoPtr)
5809 {
5810     assert(infoPtr != NULL);
5811
5812     TREEVIEW_VerifyRoot(infoPtr);
5813 }
5814 #endif