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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  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:%lx 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:%lx 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     newItem->iImage = -1;
1014     newItem->iSelectedImage = -1;
1015
1016     if (DPA_InsertPtr(infoPtr->items, INT_MAX, newItem) == -1)
1017     {
1018         Free(newItem);
1019         return NULL;
1020     }
1021
1022     return newItem;
1023 }
1024
1025 /* Exact opposite of TREEVIEW_AllocateItem. In particular, it does not
1026  * free item->pszText. */
1027 static void
1028 TREEVIEW_FreeItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
1029 {
1030     DPA_DeletePtr(infoPtr->items, DPA_GetPtrIndex(infoPtr->items, item));
1031     Free(item);
1032     if (infoPtr->selectedItem == item)
1033         infoPtr->selectedItem = NULL;
1034     if (infoPtr->hotItem == item)
1035         infoPtr->hotItem = NULL;
1036     if (infoPtr->focusedItem == item)
1037         infoPtr->focusedItem = NULL;
1038     if (infoPtr->firstVisible == item)
1039         infoPtr->firstVisible = NULL;
1040     if (infoPtr->dropItem == item)
1041         infoPtr->dropItem = NULL;
1042     if (infoPtr->insertMarkItem == item)
1043         infoPtr->insertMarkItem = NULL;
1044 }
1045
1046
1047 /* Item Insertion *******************************************************/
1048
1049 /***************************************************************************
1050  * This method inserts newItem before sibling as a child of parent.
1051  * sibling can be NULL, but only if parent has no children.
1052  */
1053 static void
1054 TREEVIEW_InsertBefore(TREEVIEW_ITEM *newItem, TREEVIEW_ITEM *sibling,
1055                       TREEVIEW_ITEM *parent)
1056 {
1057     assert(newItem != NULL);
1058     assert(parent != NULL);
1059
1060     if (sibling != NULL)
1061     {
1062         assert(sibling->parent == parent);
1063
1064         if (sibling->prevSibling != NULL)
1065             sibling->prevSibling->nextSibling = newItem;
1066
1067         newItem->prevSibling = sibling->prevSibling;
1068         sibling->prevSibling = newItem;
1069     }
1070     else
1071        newItem->prevSibling = NULL;
1072
1073     newItem->nextSibling = sibling;
1074
1075     if (parent->firstChild == sibling)
1076         parent->firstChild = newItem;
1077
1078     if (parent->lastChild == NULL)
1079         parent->lastChild = newItem;
1080 }
1081
1082 /***************************************************************************
1083  * This method inserts newItem after sibling as a child of parent.
1084  * sibling can be NULL, but only if parent has no children.
1085  */
1086 static void
1087 TREEVIEW_InsertAfter(TREEVIEW_ITEM *newItem, TREEVIEW_ITEM *sibling,
1088                      TREEVIEW_ITEM *parent)
1089 {
1090     assert(newItem != NULL);
1091     assert(parent != NULL);
1092
1093     if (sibling != NULL)
1094     {
1095         assert(sibling->parent == parent);
1096
1097         if (sibling->nextSibling != NULL)
1098             sibling->nextSibling->prevSibling = newItem;
1099
1100         newItem->nextSibling = sibling->nextSibling;
1101         sibling->nextSibling = newItem;
1102     }
1103     else
1104        newItem->nextSibling = NULL;
1105
1106     newItem->prevSibling = sibling;
1107
1108     if (parent->lastChild == sibling)
1109         parent->lastChild = newItem;
1110
1111     if (parent->firstChild == NULL)
1112         parent->firstChild = newItem;
1113 }
1114
1115 static BOOL
1116 TREEVIEW_DoSetItemT(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
1117                    const TVITEMEXW *tvItem, BOOL isW)
1118 {
1119     UINT callbackClear = 0;
1120     UINT callbackSet = 0;
1121
1122     TRACE("item %p\n", wineItem);
1123     /* Do this first in case it fails. */
1124     if (tvItem->mask & TVIF_TEXT)
1125     {
1126         wineItem->textWidth = 0; /* force width recalculation */
1127         if (tvItem->pszText != LPSTR_TEXTCALLBACKW) /* covers != TEXTCALLBACKA too */
1128         {
1129             int len;
1130             LPWSTR newText;
1131             if (isW)
1132                 len = lstrlenW(tvItem->pszText) + 1;
1133             else
1134                 len = MultiByteToWideChar(CP_ACP, 0, (LPSTR)tvItem->pszText, -1, NULL, 0);
1135
1136             newText  = ReAlloc(wineItem->pszText, len * sizeof(WCHAR));
1137
1138             if (newText == NULL) return FALSE;
1139
1140             callbackClear |= TVIF_TEXT;
1141
1142             wineItem->pszText = newText;
1143             wineItem->cchTextMax = len;
1144             if (isW)
1145                 lstrcpynW(wineItem->pszText, tvItem->pszText, len);
1146             else
1147                 MultiByteToWideChar(CP_ACP, 0, (LPSTR)tvItem->pszText, -1,
1148                                     wineItem->pszText, len);
1149
1150             TRACE("setting text %s, item %p\n", debugstr_w(wineItem->pszText), wineItem);
1151         }
1152         else
1153         {
1154             callbackSet |= TVIF_TEXT;
1155
1156             wineItem->pszText = ReAlloc(wineItem->pszText,
1157                                         TEXT_CALLBACK_SIZE * sizeof(WCHAR));
1158             wineItem->cchTextMax = TEXT_CALLBACK_SIZE;
1159             TRACE("setting callback, item %p\n", wineItem);
1160         }
1161     }
1162
1163     if (tvItem->mask & TVIF_CHILDREN)
1164     {
1165         wineItem->cChildren = tvItem->cChildren;
1166
1167         if (wineItem->cChildren == I_CHILDRENCALLBACK)
1168             callbackSet |= TVIF_CHILDREN;
1169         else
1170             callbackClear |= TVIF_CHILDREN;
1171     }
1172
1173     if (tvItem->mask & TVIF_IMAGE)
1174     {
1175         wineItem->iImage = tvItem->iImage;
1176
1177         if (wineItem->iImage == I_IMAGECALLBACK)
1178             callbackSet |= TVIF_IMAGE;
1179         else
1180             callbackClear |= TVIF_IMAGE;
1181     }
1182
1183     if (tvItem->mask & TVIF_SELECTEDIMAGE)
1184     {
1185         wineItem->iSelectedImage = tvItem->iSelectedImage;
1186
1187         if (wineItem->iSelectedImage == I_IMAGECALLBACK)
1188             callbackSet |= TVIF_SELECTEDIMAGE;
1189         else
1190             callbackClear |= TVIF_SELECTEDIMAGE;
1191     }
1192
1193     if (tvItem->mask & TVIF_PARAM)
1194         wineItem->lParam = tvItem->lParam;
1195
1196     /* If the application sets TVIF_INTEGRAL without
1197      * supplying a TVITEMEX structure, it's toast. */
1198     if (tvItem->mask & TVIF_INTEGRAL)
1199         wineItem->iIntegral = tvItem->iIntegral;
1200
1201     if (tvItem->mask & TVIF_STATE)
1202     {
1203         TRACE("prevstate,state,mask:%x,%x,%x\n", wineItem->state, tvItem->state,
1204               tvItem->stateMask);
1205         wineItem->state &= ~tvItem->stateMask;
1206         wineItem->state |= (tvItem->state & tvItem->stateMask);
1207     }
1208
1209     wineItem->callbackMask |= callbackSet;
1210     wineItem->callbackMask &= ~callbackClear;
1211
1212     return TRUE;
1213 }
1214
1215 /* Note that the new item is pre-zeroed. */
1216 static LRESULT
1217 TREEVIEW_InsertItemT(TREEVIEW_INFO *infoPtr, const TVINSERTSTRUCTW *ptdi, BOOL isW)
1218 {
1219     const TVITEMEXW *tvItem = &ptdi->u.itemex;
1220     HTREEITEM insertAfter;
1221     TREEVIEW_ITEM *newItem, *parentItem;
1222     BOOL bTextUpdated = FALSE;
1223
1224     if (ptdi->hParent == TVI_ROOT || ptdi->hParent == 0)
1225     {
1226         parentItem = infoPtr->root;
1227     }
1228     else
1229     {
1230         parentItem = ptdi->hParent;
1231
1232         if (!TREEVIEW_ValidItem(infoPtr, parentItem))
1233         {
1234             WARN("invalid parent %p\n", parentItem);
1235             return (LRESULT)(HTREEITEM)NULL;
1236         }
1237     }
1238
1239     insertAfter = ptdi->hInsertAfter;
1240
1241     /* Validate this now for convenience. */
1242     switch ((DWORD_PTR)insertAfter)
1243     {
1244     case (DWORD_PTR)TVI_FIRST:
1245     case (DWORD_PTR)TVI_LAST:
1246     case (DWORD_PTR)TVI_SORT:
1247         break;
1248
1249     default:
1250         if (!TREEVIEW_ValidItem(infoPtr, insertAfter) ||
1251             insertAfter->parent != parentItem)
1252         {
1253             WARN("invalid insert after %p\n", insertAfter);
1254             insertAfter = TVI_LAST;
1255         }
1256     }
1257
1258     TRACE("parent %p position %p: %s\n", parentItem, insertAfter,
1259           (tvItem->mask & TVIF_TEXT)
1260           ? ((tvItem->pszText == LPSTR_TEXTCALLBACKW) ? "<callback>"
1261              : (isW ? debugstr_w(tvItem->pszText) : debugstr_a((LPSTR)tvItem->pszText)))
1262           : "<no label>");
1263
1264     newItem = TREEVIEW_AllocateItem(infoPtr);
1265     if (newItem == NULL)
1266         return (LRESULT)(HTREEITEM)NULL;
1267
1268     newItem->parent = parentItem;
1269     newItem->iIntegral = 1;
1270
1271     if (!TREEVIEW_DoSetItemT(infoPtr, newItem, tvItem, isW))
1272         return (LRESULT)(HTREEITEM)NULL;
1273
1274     /* After this point, nothing can fail. (Except for TVI_SORT.) */
1275
1276     infoPtr->uNumItems++;
1277
1278     switch ((DWORD_PTR)insertAfter)
1279     {
1280     case (DWORD_PTR)TVI_FIRST:
1281         {
1282            TREEVIEW_ITEM *originalFirst = parentItem->firstChild;
1283            TREEVIEW_InsertBefore(newItem, parentItem->firstChild, parentItem);
1284            if (infoPtr->firstVisible == originalFirst)
1285               TREEVIEW_SetFirstVisible(infoPtr, newItem, TRUE);
1286         }
1287         break;
1288
1289     case (DWORD_PTR)TVI_LAST:
1290         TREEVIEW_InsertAfter(newItem, parentItem->lastChild, parentItem);
1291         break;
1292
1293         /* hInsertAfter names a specific item we want to insert after */
1294     default:
1295         TREEVIEW_InsertAfter(newItem, insertAfter, insertAfter->parent);
1296         break;
1297
1298     case (DWORD_PTR)TVI_SORT:
1299         {
1300             TREEVIEW_ITEM *aChild;
1301             TREEVIEW_ITEM *previousChild = NULL;
1302             BOOL bItemInserted = FALSE;
1303
1304             aChild = parentItem->firstChild;
1305
1306             bTextUpdated = TRUE;
1307             TREEVIEW_UpdateDispInfo(infoPtr, newItem, TVIF_TEXT);
1308
1309             /* Iterate the parent children to see where we fit in */
1310             while (aChild != NULL)
1311             {
1312                 INT comp;
1313
1314                 TREEVIEW_UpdateDispInfo(infoPtr, aChild, TVIF_TEXT);
1315                 comp = lstrcmpW(newItem->pszText, aChild->pszText);
1316
1317                 if (comp < 0)   /* we are smaller than the current one */
1318                 {
1319                     TREEVIEW_InsertBefore(newItem, aChild, parentItem);
1320                     bItemInserted = TRUE;
1321                     break;
1322                 }
1323                 else if (comp > 0)      /* we are bigger than the current one */
1324                 {
1325                     previousChild = aChild;
1326
1327                     /* This will help us to exit if there is no more sibling */
1328                     aChild = (aChild->nextSibling == 0)
1329                         ? NULL
1330                         : aChild->nextSibling;
1331
1332                     /* Look at the next item */
1333                     continue;
1334                 }
1335                 else if (comp == 0)
1336                 {
1337                     /*
1338                      * An item with this name is already existing, therefore,
1339                      * we add after the one we found
1340                      */
1341                     TREEVIEW_InsertAfter(newItem, aChild, parentItem);
1342                     bItemInserted = TRUE;
1343                     break;
1344                 }
1345             }
1346
1347             /*
1348              * we reach the end of the child list and the item has not
1349              * yet been inserted, therefore, insert it after the last child.
1350              */
1351             if ((!bItemInserted) && (aChild == NULL))
1352                 TREEVIEW_InsertAfter(newItem, previousChild, parentItem);
1353
1354             break;
1355         }
1356     }
1357
1358
1359     TRACE("new item %p; parent %p, mask %x\n", newItem,
1360           newItem->parent, tvItem->mask);
1361
1362     newItem->iLevel = newItem->parent->iLevel + 1;
1363
1364     if (newItem->parent->cChildren == 0)
1365         newItem->parent->cChildren = 1;
1366
1367     if (infoPtr->dwStyle & TVS_CHECKBOXES)
1368     {
1369         if (STATEIMAGEINDEX(newItem->state) == 0)
1370             newItem->state |= INDEXTOSTATEIMAGEMASK(1);
1371     }
1372
1373     if (infoPtr->firstVisible == NULL)
1374         infoPtr->firstVisible = newItem;
1375
1376     TREEVIEW_VerifyTree(infoPtr);
1377
1378     if (parentItem == infoPtr->root ||
1379         (ISVISIBLE(parentItem) && parentItem->state & TVIS_EXPANDED))
1380     {
1381        TREEVIEW_ITEM *item;
1382        TREEVIEW_ITEM *prev = TREEVIEW_GetPrevListItem(infoPtr, newItem);
1383
1384        TREEVIEW_RecalculateVisibleOrder(infoPtr, prev);
1385        TREEVIEW_ComputeItemInternalMetrics(infoPtr, newItem);
1386
1387        if (!bTextUpdated)
1388           TREEVIEW_UpdateDispInfo(infoPtr, newItem, TVIF_TEXT);
1389
1390        TREEVIEW_ComputeTextWidth(infoPtr, newItem, 0);
1391        TREEVIEW_UpdateScrollBars(infoPtr);
1392     /*
1393      * if the item was inserted in a visible part of the tree,
1394      * invalidate it, as well as those after it
1395      */
1396        for (item = newItem;
1397             item != NULL;
1398             item = TREEVIEW_GetNextListItem(infoPtr, item))
1399           TREEVIEW_Invalidate(infoPtr, item);
1400     }
1401     else
1402     {
1403        newItem->visibleOrder = -1;
1404
1405        /* refresh treeview if newItem is the first item inserted under parentItem */
1406        if (ISVISIBLE(parentItem) && newItem->prevSibling == newItem->nextSibling)
1407        {
1408           /* parent got '+' - update it */
1409           TREEVIEW_Invalidate(infoPtr, parentItem);
1410        }
1411     }
1412
1413     return (LRESULT)newItem;
1414 }
1415
1416 /* Item Deletion ************************************************************/
1417 static void
1418 TREEVIEW_RemoveItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem);
1419
1420 static void
1421 TREEVIEW_RemoveAllChildren(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *parentItem)
1422 {
1423     TREEVIEW_ITEM *kill = parentItem->firstChild;
1424
1425     while (kill != NULL)
1426     {
1427         TREEVIEW_ITEM *next = kill->nextSibling;
1428
1429         TREEVIEW_RemoveItem(infoPtr, kill);
1430
1431         kill = next;
1432     }
1433
1434     assert(parentItem->cChildren <= 0); /* I_CHILDRENCALLBACK or 0 */
1435     assert(parentItem->firstChild == NULL);
1436     assert(parentItem->lastChild == NULL);
1437 }
1438
1439 static void
1440 TREEVIEW_UnlinkItem(TREEVIEW_ITEM *item)
1441 {
1442     TREEVIEW_ITEM *parentItem = item->parent;
1443
1444     assert(item != NULL);
1445     assert(item->parent != NULL); /* i.e. it must not be the root */
1446
1447     if (parentItem->firstChild == item)
1448         parentItem->firstChild = item->nextSibling;
1449
1450     if (parentItem->lastChild == item)
1451         parentItem->lastChild = item->prevSibling;
1452
1453     if (parentItem->firstChild == NULL && parentItem->lastChild == NULL
1454         && parentItem->cChildren > 0)
1455         parentItem->cChildren = 0;
1456
1457     if (item->prevSibling)
1458         item->prevSibling->nextSibling = item->nextSibling;
1459
1460     if (item->nextSibling)
1461         item->nextSibling->prevSibling = item->prevSibling;
1462 }
1463
1464 static void
1465 TREEVIEW_RemoveItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem)
1466 {
1467     TRACE("%p, (%s)\n", wineItem, TREEVIEW_ItemName(wineItem));
1468
1469     TREEVIEW_SendTreeviewNotify(infoPtr, TVN_DELETEITEMW, TVC_UNKNOWN,
1470                                 TVIF_HANDLE | TVIF_PARAM, wineItem, 0);
1471
1472     if (wineItem->firstChild)
1473         TREEVIEW_RemoveAllChildren(infoPtr, wineItem);
1474
1475     TREEVIEW_UnlinkItem(wineItem);
1476
1477     infoPtr->uNumItems--;
1478
1479     if (wineItem->pszText && wineItem->pszText != LPSTR_TEXTCALLBACKW)
1480         Free(wineItem->pszText);
1481
1482     TREEVIEW_FreeItem(infoPtr, wineItem);
1483 }
1484
1485
1486 /* Empty out the tree. */
1487 static void
1488 TREEVIEW_RemoveTree(TREEVIEW_INFO *infoPtr)
1489 {
1490     TREEVIEW_RemoveAllChildren(infoPtr, infoPtr->root);
1491
1492     assert(infoPtr->uNumItems == 0);    /* root isn't counted in uNumItems */
1493 }
1494
1495 static LRESULT
1496 TREEVIEW_DeleteItem(TREEVIEW_INFO *infoPtr, HTREEITEM wineItem)
1497 {
1498     TREEVIEW_ITEM *newSelection = NULL;
1499     TREEVIEW_ITEM *newFirstVisible = NULL;
1500     TREEVIEW_ITEM *parent, *prev = NULL;
1501     BOOL visible = FALSE;
1502
1503     if (wineItem == TVI_ROOT)
1504     {
1505         TRACE("TVI_ROOT\n");
1506         parent = infoPtr->root;
1507         newSelection = NULL;
1508         visible = TRUE;
1509         TREEVIEW_RemoveTree(infoPtr);
1510     }
1511     else
1512     {
1513         if (!TREEVIEW_ValidItem(infoPtr, wineItem))
1514             return FALSE;
1515
1516         TRACE("%p (%s)\n", wineItem, TREEVIEW_ItemName(wineItem));
1517         parent = wineItem->parent;
1518
1519         if (ISVISIBLE(wineItem))
1520         {
1521             prev = TREEVIEW_GetPrevListItem(infoPtr, wineItem);
1522             visible = TRUE;
1523         }
1524
1525         if (infoPtr->selectedItem != NULL
1526             && (wineItem == infoPtr->selectedItem
1527                 || TREEVIEW_IsChildOf(wineItem, infoPtr->selectedItem)))
1528         {
1529             if (wineItem->nextSibling)
1530                 newSelection = wineItem->nextSibling;
1531             else if (wineItem->parent != infoPtr->root)
1532                 newSelection = wineItem->parent;
1533             else
1534                 newSelection = wineItem->prevSibling;
1535             TRACE("newSelection = %p\n", newSelection);
1536         }
1537
1538         if (infoPtr->firstVisible == wineItem)
1539         {
1540             if (wineItem->nextSibling)
1541                newFirstVisible = wineItem->nextSibling;
1542             else if (wineItem->prevSibling)
1543                newFirstVisible = wineItem->prevSibling;
1544             else if (wineItem->parent != infoPtr->root)
1545                newFirstVisible = wineItem->parent;
1546                TREEVIEW_SetFirstVisible(infoPtr, NULL, TRUE);
1547         }
1548         else
1549             newFirstVisible = infoPtr->firstVisible;
1550
1551         TREEVIEW_RemoveItem(infoPtr, wineItem);
1552     }
1553
1554     /* Don't change if somebody else already has (infoPtr->selectedItem is cleared by FreeItem). */
1555     if (!infoPtr->selectedItem && newSelection)
1556     {
1557         if (TREEVIEW_ValidItem(infoPtr, newSelection))
1558             TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, newSelection, TVC_UNKNOWN);
1559     }
1560
1561     /* Validate insertMark dropItem.
1562      * hotItem ??? - used for comparison only.
1563      */
1564     if (!TREEVIEW_ValidItem(infoPtr, infoPtr->insertMarkItem))
1565         infoPtr->insertMarkItem = 0;
1566
1567     if (!TREEVIEW_ValidItem(infoPtr, infoPtr->dropItem))
1568         infoPtr->dropItem = 0;
1569
1570     if (!TREEVIEW_ValidItem(infoPtr, newFirstVisible))
1571         newFirstVisible = infoPtr->root->firstChild;
1572
1573     TREEVIEW_VerifyTree(infoPtr);
1574
1575
1576     if (visible)
1577     {
1578        TREEVIEW_SetFirstVisible(infoPtr, newFirstVisible, TRUE);
1579        TREEVIEW_RecalculateVisibleOrder(infoPtr, prev);
1580        TREEVIEW_UpdateScrollBars(infoPtr);
1581        TREEVIEW_Invalidate(infoPtr, NULL);
1582     }
1583     else if (ISVISIBLE(parent) && !TREEVIEW_HasChildren(infoPtr, parent))
1584     {
1585        /* parent lost '+/-' - update it */
1586        TREEVIEW_Invalidate(infoPtr, parent);
1587     }
1588
1589     return TRUE;
1590 }
1591
1592
1593 /* Get/Set Messages *********************************************************/
1594 static LRESULT
1595 TREEVIEW_SetRedraw(TREEVIEW_INFO* infoPtr, WPARAM wParam, LPARAM lParam)
1596 {
1597   if(wParam)
1598     infoPtr->bRedraw = TRUE;
1599   else
1600     infoPtr->bRedraw = FALSE;
1601
1602   return 0;
1603 }
1604
1605 static LRESULT
1606 TREEVIEW_GetIndent(TREEVIEW_INFO *infoPtr)
1607 {
1608     TRACE("\n");
1609     return infoPtr->uIndent;
1610 }
1611
1612 static LRESULT
1613 TREEVIEW_SetIndent(TREEVIEW_INFO *infoPtr, UINT newIndent)
1614 {
1615     TRACE("\n");
1616
1617     if (newIndent < MINIMUM_INDENT)
1618         newIndent = MINIMUM_INDENT;
1619
1620     if (infoPtr->uIndent != newIndent)
1621     {
1622         infoPtr->uIndent = newIndent;
1623         TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
1624         TREEVIEW_UpdateScrollBars(infoPtr);
1625         TREEVIEW_Invalidate(infoPtr, NULL);
1626     }
1627
1628     return 0;
1629 }
1630
1631
1632 static LRESULT
1633 TREEVIEW_GetToolTips(TREEVIEW_INFO *infoPtr)
1634 {
1635     TRACE("\n");
1636     return (LRESULT)infoPtr->hwndToolTip;
1637 }
1638
1639 static LRESULT
1640 TREEVIEW_SetToolTips(TREEVIEW_INFO *infoPtr, HWND hwndTT)
1641 {
1642     HWND prevToolTip;
1643
1644     TRACE("\n");
1645     prevToolTip = infoPtr->hwndToolTip;
1646     infoPtr->hwndToolTip = hwndTT;
1647
1648     return (LRESULT)prevToolTip;
1649 }
1650
1651 static LRESULT
1652 TREEVIEW_SetUnicodeFormat(TREEVIEW_INFO *infoPtr, BOOL fUnicode)
1653 {
1654     BOOL rc = infoPtr->bNtfUnicode;
1655     infoPtr->bNtfUnicode = fUnicode;
1656     return rc;
1657 }
1658
1659 static LRESULT
1660 TREEVIEW_GetUnicodeFormat(TREEVIEW_INFO *infoPtr)
1661 {
1662      return infoPtr->bNtfUnicode;
1663 }
1664
1665 static LRESULT
1666 TREEVIEW_GetScrollTime(TREEVIEW_INFO *infoPtr)
1667 {
1668     return infoPtr->uScrollTime;
1669 }
1670
1671 static LRESULT
1672 TREEVIEW_SetScrollTime(TREEVIEW_INFO *infoPtr, UINT uScrollTime)
1673 {
1674     UINT uOldScrollTime = infoPtr->uScrollTime;
1675
1676     infoPtr->uScrollTime = min(uScrollTime, 100);
1677
1678     return uOldScrollTime;
1679 }
1680
1681
1682 static LRESULT
1683 TREEVIEW_GetImageList(TREEVIEW_INFO *infoPtr, WPARAM wParam)
1684 {
1685     TRACE("\n");
1686
1687     switch (wParam)
1688     {
1689     case (WPARAM)TVSIL_NORMAL:
1690         return (LRESULT)infoPtr->himlNormal;
1691
1692     case (WPARAM)TVSIL_STATE:
1693         return (LRESULT)infoPtr->himlState;
1694
1695     default:
1696         return 0;
1697     }
1698 }
1699
1700 #define TVHEIGHT_MIN         16
1701 #define TVHEIGHT_FONT_ADJUST 3 /* 2 for focus border + 1 for margin some apps assume */
1702
1703 /* Compute the natural height for items. */
1704 static UINT
1705 TREEVIEW_NaturalHeight(TREEVIEW_INFO *infoPtr)
1706 {
1707     TEXTMETRICW tm;
1708     HDC hdc = GetDC(0);
1709     HFONT hOldFont = SelectObject(hdc, infoPtr->hFont);
1710     UINT height;
1711
1712     /* Height is the maximum of:
1713      * 16 (a hack because our fonts are tiny), and
1714      * The text height + border & margin, and
1715      * The size of the normal image list
1716      */
1717     GetTextMetricsW(hdc, &tm);
1718     SelectObject(hdc, hOldFont);
1719     ReleaseDC(0, hdc);
1720
1721     height = TVHEIGHT_MIN;
1722     if (height < tm.tmHeight + tm.tmExternalLeading + TVHEIGHT_FONT_ADJUST)
1723         height = tm.tmHeight + tm.tmExternalLeading + TVHEIGHT_FONT_ADJUST;
1724     if (height < infoPtr->normalImageHeight)
1725         height = infoPtr->normalImageHeight;
1726     return height;
1727 }
1728
1729 static LRESULT
1730 TREEVIEW_SetImageList(TREEVIEW_INFO *infoPtr, WPARAM wParam, HIMAGELIST himlNew)
1731 {
1732     HIMAGELIST himlOld = 0;
1733     int oldWidth  = infoPtr->normalImageWidth;
1734     int oldHeight = infoPtr->normalImageHeight;
1735
1736
1737     TRACE("%x,%p\n", wParam, himlNew);
1738
1739     switch (wParam)
1740     {
1741     case (WPARAM)TVSIL_NORMAL:
1742         himlOld = infoPtr->himlNormal;
1743         infoPtr->himlNormal = himlNew;
1744
1745         if (himlNew != NULL)
1746             ImageList_GetIconSize(himlNew, &infoPtr->normalImageWidth,
1747                                   &infoPtr->normalImageHeight);
1748         else
1749         {
1750             infoPtr->normalImageWidth = 0;
1751             infoPtr->normalImageHeight = 0;
1752         }
1753
1754         break;
1755
1756     case (WPARAM)TVSIL_STATE:
1757         himlOld = infoPtr->himlState;
1758         infoPtr->himlState = himlNew;
1759
1760         if (himlNew != NULL)
1761             ImageList_GetIconSize(himlNew, &infoPtr->stateImageWidth,
1762                                   &infoPtr->stateImageHeight);
1763         else
1764         {
1765             infoPtr->stateImageWidth = 0;
1766             infoPtr->stateImageHeight = 0;
1767         }
1768
1769         break;
1770     }
1771
1772     if (oldWidth != infoPtr->normalImageWidth ||
1773         oldHeight != infoPtr->normalImageHeight)
1774     {
1775         BOOL bRecalcVisible = FALSE;
1776
1777         if (oldHeight != infoPtr->normalImageHeight &&
1778             !infoPtr->bHeightSet)
1779         {
1780             infoPtr->uItemHeight = TREEVIEW_NaturalHeight(infoPtr);
1781             bRecalcVisible = TRUE;
1782         }
1783
1784         if (infoPtr->normalImageWidth > MINIMUM_INDENT &&
1785             infoPtr->normalImageWidth != infoPtr->uIndent)
1786         {
1787             infoPtr->uIndent = infoPtr->normalImageWidth;
1788             bRecalcVisible = TRUE;
1789         }
1790
1791         if (bRecalcVisible)
1792             TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
1793
1794        TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
1795        TREEVIEW_UpdateScrollBars(infoPtr);
1796     }
1797
1798     TREEVIEW_Invalidate(infoPtr, NULL);
1799
1800     return (LRESULT)himlOld;
1801 }
1802
1803 static LRESULT
1804 TREEVIEW_SetItemHeight(TREEVIEW_INFO *infoPtr, INT newHeight)
1805 {
1806     INT prevHeight = infoPtr->uItemHeight;
1807
1808     TRACE("%d\n", newHeight);
1809     if (newHeight == -1)
1810     {
1811         infoPtr->uItemHeight = TREEVIEW_NaturalHeight(infoPtr);
1812         infoPtr->bHeightSet = FALSE;
1813     }
1814     else
1815     {
1816         infoPtr->uItemHeight = newHeight;
1817         infoPtr->bHeightSet = TRUE;
1818     }
1819
1820     /* Round down, unless we support odd ("non even") heights. */
1821     if (!(infoPtr->dwStyle) & TVS_NONEVENHEIGHT)
1822         infoPtr->uItemHeight &= ~1;
1823
1824     if (infoPtr->uItemHeight != prevHeight)
1825     {
1826         TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
1827         TREEVIEW_UpdateScrollBars(infoPtr);
1828         TREEVIEW_Invalidate(infoPtr, NULL);
1829     }
1830
1831     return prevHeight;
1832 }
1833
1834 static LRESULT
1835 TREEVIEW_GetItemHeight(TREEVIEW_INFO *infoPtr)
1836 {
1837     TRACE("\n");
1838     return infoPtr->uItemHeight;
1839 }
1840
1841
1842 static LRESULT
1843 TREEVIEW_GetFont(TREEVIEW_INFO *infoPtr)
1844 {
1845     TRACE("%p\n", infoPtr->hFont);
1846     return (LRESULT)infoPtr->hFont;
1847 }
1848
1849
1850 static INT CALLBACK
1851 TREEVIEW_ResetTextWidth(LPVOID pItem, LPVOID unused)
1852 {
1853     (void)unused;
1854
1855     ((TREEVIEW_ITEM *)pItem)->textWidth = 0;
1856
1857     return 1;
1858 }
1859
1860 static LRESULT
1861 TREEVIEW_SetFont(TREEVIEW_INFO *infoPtr, HFONT hFont, BOOL bRedraw)
1862 {
1863     UINT uHeight = infoPtr->uItemHeight;
1864
1865     TRACE("%p %i\n", hFont, bRedraw);
1866
1867     infoPtr->hFont = hFont ? hFont : infoPtr->hDefaultFont;
1868
1869     DeleteObject(infoPtr->hBoldFont);
1870     infoPtr->hBoldFont = TREEVIEW_CreateBoldFont(infoPtr->hFont);
1871     infoPtr->hUnderlineFont = TREEVIEW_CreateUnderlineFont(infoPtr->hFont);
1872
1873     if (!infoPtr->bHeightSet)
1874         infoPtr->uItemHeight = TREEVIEW_NaturalHeight(infoPtr);
1875
1876     if (uHeight != infoPtr->uItemHeight)
1877        TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
1878
1879     DPA_EnumCallback(infoPtr->items, TREEVIEW_ResetTextWidth, 0);
1880
1881     TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
1882     TREEVIEW_UpdateScrollBars(infoPtr);
1883
1884     if (bRedraw)
1885         TREEVIEW_Invalidate(infoPtr, NULL);
1886
1887     return 0;
1888 }
1889
1890
1891 static LRESULT
1892 TREEVIEW_GetLineColor(TREEVIEW_INFO *infoPtr)
1893 {
1894     TRACE("\n");
1895     return (LRESULT)infoPtr->clrLine;
1896 }
1897
1898 static LRESULT
1899 TREEVIEW_SetLineColor(TREEVIEW_INFO *infoPtr, COLORREF color)
1900 {
1901     COLORREF prevColor = infoPtr->clrLine;
1902
1903     TRACE("\n");
1904     infoPtr->clrLine = color;
1905     return (LRESULT)prevColor;
1906 }
1907
1908
1909 static LRESULT
1910 TREEVIEW_GetTextColor(TREEVIEW_INFO *infoPtr)
1911 {
1912     TRACE("\n");
1913     return (LRESULT)infoPtr->clrText;
1914 }
1915
1916 static LRESULT
1917 TREEVIEW_SetTextColor(TREEVIEW_INFO *infoPtr, COLORREF color)
1918 {
1919     COLORREF prevColor = infoPtr->clrText;
1920
1921     TRACE("\n");
1922     infoPtr->clrText = color;
1923
1924     if (infoPtr->clrText != prevColor)
1925         TREEVIEW_Invalidate(infoPtr, NULL);
1926
1927     return (LRESULT)prevColor;
1928 }
1929
1930
1931 static LRESULT
1932 TREEVIEW_GetBkColor(TREEVIEW_INFO *infoPtr)
1933 {
1934     TRACE("\n");
1935     return (LRESULT)infoPtr->clrBk;
1936 }
1937
1938 static LRESULT
1939 TREEVIEW_SetBkColor(TREEVIEW_INFO *infoPtr, COLORREF newColor)
1940 {
1941     COLORREF prevColor = infoPtr->clrBk;
1942
1943     TRACE("\n");
1944     infoPtr->clrBk = newColor;
1945
1946     if (newColor != prevColor)
1947         TREEVIEW_Invalidate(infoPtr, NULL);
1948
1949     return (LRESULT)prevColor;
1950 }
1951
1952
1953 static LRESULT
1954 TREEVIEW_GetInsertMarkColor(TREEVIEW_INFO *infoPtr)
1955 {
1956     TRACE("\n");
1957     return (LRESULT)infoPtr->clrInsertMark;
1958 }
1959
1960 static LRESULT
1961 TREEVIEW_SetInsertMarkColor(TREEVIEW_INFO *infoPtr, COLORREF color)
1962 {
1963     COLORREF prevColor = infoPtr->clrInsertMark;
1964
1965     TRACE("%lx\n", color);
1966     infoPtr->clrInsertMark = color;
1967
1968     return (LRESULT)prevColor;
1969 }
1970
1971
1972 static LRESULT
1973 TREEVIEW_SetInsertMark(TREEVIEW_INFO *infoPtr, BOOL wParam, HTREEITEM item)
1974 {
1975     TRACE("%d %p\n", wParam, item);
1976
1977     if (!TREEVIEW_ValidItem(infoPtr, item))
1978         return 0;
1979
1980     infoPtr->insertBeforeorAfter = wParam;
1981     infoPtr->insertMarkItem = item;
1982
1983     TREEVIEW_Invalidate(infoPtr, NULL);
1984
1985     return 1;
1986 }
1987
1988
1989 /************************************************************************
1990  * Some serious braindamage here. lParam is a pointer to both the
1991  * input HTREEITEM and the output RECT.
1992  */
1993 static LRESULT
1994 TREEVIEW_GetItemRect(TREEVIEW_INFO *infoPtr, BOOL fTextRect, LPRECT lpRect)
1995 {
1996     TREEVIEW_ITEM *wineItem;
1997     const HTREEITEM *pItem = (HTREEITEM *)lpRect;
1998
1999     TRACE("\n");
2000     /*
2001      * validate parameters
2002      */
2003     if (pItem == NULL)
2004         return FALSE;
2005
2006     wineItem = *pItem;
2007     if (!TREEVIEW_ValidItem(infoPtr, wineItem) || !ISVISIBLE(wineItem))
2008         return FALSE;
2009
2010     /*
2011      * If wParam is TRUE return the text size otherwise return
2012      * the whole item size
2013      */
2014     if (fTextRect)
2015     {
2016         /* Windows does not send TVN_GETDISPINFO here. */
2017
2018         lpRect->top = wineItem->rect.top;
2019         lpRect->bottom = wineItem->rect.bottom;
2020
2021         lpRect->left = wineItem->textOffset;
2022         lpRect->right = wineItem->textOffset + wineItem->textWidth;
2023     }
2024     else
2025     {
2026         *lpRect = wineItem->rect;
2027     }
2028
2029     TRACE("%s [L:%ld R:%ld T:%ld B:%ld]\n", fTextRect ? "text" : "item",
2030           lpRect->left, lpRect->right, lpRect->top, lpRect->bottom);
2031
2032     return TRUE;
2033 }
2034
2035 static inline LRESULT
2036 TREEVIEW_GetVisibleCount(TREEVIEW_INFO *infoPtr)
2037 {
2038     /* Suprise! This does not take integral height into account. */
2039     return infoPtr->clientHeight / infoPtr->uItemHeight;
2040 }
2041
2042
2043 static LRESULT
2044 TREEVIEW_GetItemT(TREEVIEW_INFO *infoPtr, LPTVITEMEXW tvItem, BOOL isW)
2045 {
2046     TREEVIEW_ITEM *wineItem;
2047
2048     wineItem = tvItem->hItem;
2049     if (!TREEVIEW_ValidItem(infoPtr, wineItem))
2050         return FALSE;
2051
2052     TREEVIEW_UpdateDispInfo(infoPtr, wineItem, tvItem->mask);
2053
2054     if (tvItem->mask & TVIF_CHILDREN)
2055     {
2056         if (wineItem->cChildren==I_CHILDRENCALLBACK)
2057             FIXME("I_CHILDRENCALLBACK not supported\n");
2058         tvItem->cChildren = wineItem->cChildren;
2059     }
2060
2061     if (tvItem->mask & TVIF_HANDLE)
2062         tvItem->hItem = wineItem;
2063
2064     if (tvItem->mask & TVIF_IMAGE)
2065         tvItem->iImage = wineItem->iImage;
2066
2067     if (tvItem->mask & TVIF_INTEGRAL)
2068         tvItem->iIntegral = wineItem->iIntegral;
2069
2070     /* undocumented: windows ignores TVIF_PARAM and
2071      * * always sets lParam
2072      */
2073     tvItem->lParam = wineItem->lParam;
2074
2075     if (tvItem->mask & TVIF_SELECTEDIMAGE)
2076         tvItem->iSelectedImage = wineItem->iSelectedImage;
2077
2078     if (tvItem->mask & TVIF_STATE)
2079         /* Careful here - Windows ignores the stateMask when you get the state
2080             That contradicts the documentation, but makes more common sense, masking
2081             retrieval in this way seems overkill */
2082         tvItem->state = wineItem->state;
2083
2084     if (tvItem->mask & TVIF_TEXT)
2085     {
2086         if (isW)
2087         {
2088             if (wineItem->pszText == LPSTR_TEXTCALLBACKW)
2089             {
2090                 tvItem->pszText = LPSTR_TEXTCALLBACKW;
2091                 FIXME(" GetItem called with LPSTR_TEXTCALLBACK\n");
2092             }
2093             else
2094             {
2095                 lstrcpynW(tvItem->pszText, wineItem->pszText, tvItem->cchTextMax);
2096             }
2097         }
2098         else
2099         {
2100             if (wineItem->pszText == LPSTR_TEXTCALLBACKW)
2101             {
2102                 tvItem->pszText = (LPWSTR)LPSTR_TEXTCALLBACKA;
2103                 FIXME(" GetItem called with LPSTR_TEXTCALLBACK\n");
2104             }
2105             else
2106             {
2107                 WideCharToMultiByte(CP_ACP, 0, wineItem->pszText, -1,
2108                                     (LPSTR)tvItem->pszText, tvItem->cchTextMax, NULL, NULL);
2109             }
2110         }
2111     }
2112     TRACE("item <%p>, txt %p, img %p, mask %x\n",
2113           wineItem, tvItem->pszText, &tvItem->iImage, tvItem->mask);
2114
2115     return TRUE;
2116 }
2117
2118 /* Beware MSDN Library Visual Studio 6.0. It says -1 on failure, 0 on success,
2119  * which is wrong. */
2120 static LRESULT
2121 TREEVIEW_SetItemT(TREEVIEW_INFO *infoPtr, LPTVITEMEXW tvItem, BOOL isW)
2122 {
2123     TREEVIEW_ITEM *wineItem;
2124     TREEVIEW_ITEM originalItem;
2125
2126     wineItem = tvItem->hItem;
2127
2128     TRACE("item %d,mask %x\n", TREEVIEW_GetItemIndex(infoPtr, wineItem),
2129           tvItem->mask);
2130
2131     if (!TREEVIEW_ValidItem(infoPtr, wineItem))
2132         return FALSE;
2133
2134     /* store the orignal item values */
2135     originalItem = *wineItem;
2136
2137     if (!TREEVIEW_DoSetItemT(infoPtr, wineItem, tvItem, isW))
2138         return FALSE;
2139
2140     /* If the text or TVIS_BOLD was changed, and it is visible, recalculate. */
2141     if ((tvItem->mask & TVIF_TEXT
2142          || (tvItem->mask & TVIF_STATE && tvItem->stateMask & TVIS_BOLD))
2143         && ISVISIBLE(wineItem))
2144     {
2145         TREEVIEW_UpdateDispInfo(infoPtr, wineItem, TVIF_TEXT);
2146         TREEVIEW_ComputeTextWidth(infoPtr, wineItem, 0);
2147     }
2148
2149     if (tvItem->mask != 0 && ISVISIBLE(wineItem))
2150     {
2151         /* The refresh updates everything, but we can't wait until then. */
2152         TREEVIEW_ComputeItemInternalMetrics(infoPtr, wineItem);
2153
2154         /* if any of the item's values changed and it's not a callback, redraw the item */
2155         if (item_changed(&originalItem, wineItem, tvItem))
2156         {
2157             if (tvItem->mask & TVIF_INTEGRAL)
2158             {
2159                 TREEVIEW_RecalculateVisibleOrder(infoPtr, wineItem);
2160                 TREEVIEW_UpdateScrollBars(infoPtr);
2161
2162                 TREEVIEW_Invalidate(infoPtr, NULL);
2163             }
2164             else
2165             {
2166                 TREEVIEW_UpdateScrollBars(infoPtr);
2167                 TREEVIEW_Invalidate(infoPtr, wineItem);
2168             }
2169         }
2170     }
2171
2172     return TRUE;
2173 }
2174
2175 static LRESULT
2176 TREEVIEW_GetItemState(TREEVIEW_INFO *infoPtr, HTREEITEM wineItem, UINT mask)
2177 {
2178     TRACE("\n");
2179
2180     if (!wineItem || !TREEVIEW_ValidItem(infoPtr, wineItem))
2181         return 0;
2182
2183     return (wineItem->state & mask);
2184 }
2185
2186 static LRESULT
2187 TREEVIEW_GetNextItem(TREEVIEW_INFO *infoPtr, UINT which, HTREEITEM wineItem)
2188 {
2189     TREEVIEW_ITEM *retval;
2190
2191     retval = 0;
2192
2193     /* handle all the global data here */
2194     switch (which)
2195     {
2196     case TVGN_CHILD:            /* Special case: child of 0 is root */
2197         if (wineItem)
2198             break;
2199         /* fall through */
2200     case TVGN_ROOT:
2201         retval = infoPtr->root->firstChild;
2202         break;
2203
2204     case TVGN_CARET:
2205         retval = infoPtr->selectedItem;
2206         break;
2207
2208     case TVGN_FIRSTVISIBLE:
2209         retval = infoPtr->firstVisible;
2210         break;
2211
2212     case TVGN_DROPHILITE:
2213         retval = infoPtr->dropItem;
2214         break;
2215
2216     case TVGN_LASTVISIBLE:
2217         retval = TREEVIEW_GetLastListItem(infoPtr, infoPtr->root);
2218         break;
2219     }
2220
2221     if (retval)
2222     {
2223         TRACE("flags:%x, returns %p\n", which, retval);
2224         return (LRESULT)retval;
2225     }
2226
2227     if (wineItem == TVI_ROOT) wineItem = infoPtr->root;
2228
2229     if (!TREEVIEW_ValidItem(infoPtr, wineItem))
2230         return FALSE;
2231
2232     switch (which)
2233     {
2234     case TVGN_NEXT:
2235         retval = wineItem->nextSibling;
2236         break;
2237     case TVGN_PREVIOUS:
2238         retval = wineItem->prevSibling;
2239         break;
2240     case TVGN_PARENT:
2241         retval = (wineItem->parent != infoPtr->root) ? wineItem->parent : NULL;
2242         break;
2243     case TVGN_CHILD:
2244         retval = wineItem->firstChild;
2245         break;
2246     case TVGN_NEXTVISIBLE:
2247         retval = TREEVIEW_GetNextListItem(infoPtr, wineItem);
2248         break;
2249     case TVGN_PREVIOUSVISIBLE:
2250         retval = TREEVIEW_GetPrevListItem(infoPtr, wineItem);
2251         break;
2252     default:
2253         TRACE("Unknown msg %x,item %p\n", which, wineItem);
2254         break;
2255     }
2256
2257     TRACE("flags:%x, item %p;returns %p\n", which, wineItem, retval);
2258     return (LRESULT)retval;
2259 }
2260
2261
2262 static LRESULT
2263 TREEVIEW_GetCount(TREEVIEW_INFO *infoPtr)
2264 {
2265     TRACE(" %d\n", infoPtr->uNumItems);
2266     return (LRESULT)infoPtr->uNumItems;
2267 }
2268
2269 static VOID
2270 TREEVIEW_ToggleItemState(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
2271 {
2272     if (infoPtr->dwStyle & TVS_CHECKBOXES)
2273     {
2274         static const unsigned int state_table[] = { 0, 2, 1 };
2275
2276         unsigned int state;
2277
2278         state = STATEIMAGEINDEX(item->state);
2279         TRACE("state:%x\n", state);
2280         item->state &= ~TVIS_STATEIMAGEMASK;
2281
2282         if (state < 3)
2283             state = state_table[state];
2284
2285         item->state |= INDEXTOSTATEIMAGEMASK(state);
2286
2287         TRACE("state:%x\n", state);
2288         TREEVIEW_Invalidate(infoPtr, item);
2289     }
2290 }
2291
2292
2293 /* Painting *************************************************************/
2294
2295 /* Draw the lines and expand button for an item. Also draws one section
2296  * of the line from item's parent to item's parent's next sibling. */
2297 static void
2298 TREEVIEW_DrawItemLines(TREEVIEW_INFO *infoPtr, HDC hdc, TREEVIEW_ITEM *item)
2299 {
2300     LONG centerx, centery;
2301     BOOL lar = ((infoPtr->dwStyle
2302                  & (TVS_LINESATROOT|TVS_HASLINES|TVS_HASBUTTONS))
2303                 > TVS_LINESATROOT);
2304     HBRUSH hbr, hbrOld;
2305
2306     if (!lar && item->iLevel == 0)
2307         return;
2308
2309     hbr    = CreateSolidBrush(infoPtr->clrBk);
2310     hbrOld = SelectObject(hdc, hbr);
2311
2312     centerx = (item->linesOffset + item->stateOffset) / 2;
2313     centery = (item->rect.top + item->rect.bottom) / 2;
2314
2315     if (infoPtr->dwStyle & TVS_HASLINES)
2316     {
2317         HPEN hOldPen, hNewPen;
2318         HTREEITEM parent;
2319         LOGBRUSH lb;
2320
2321         /*
2322          * Get a dotted grey pen
2323          */
2324         lb.lbStyle = BS_SOLID;
2325         lb.lbColor = infoPtr->clrLine;
2326         hNewPen = ExtCreatePen(PS_COSMETIC|PS_ALTERNATE, 1, &lb, 0, NULL);
2327         hOldPen = SelectObject(hdc, hNewPen);
2328
2329         MoveToEx(hdc, item->stateOffset, centery, NULL);
2330         LineTo(hdc, centerx - 1, centery);
2331
2332         if (item->prevSibling || item->parent != infoPtr->root)
2333         {
2334             MoveToEx(hdc, centerx, item->rect.top, NULL);
2335             LineTo(hdc, centerx, centery);
2336         }
2337
2338         if (item->nextSibling)
2339         {
2340             MoveToEx(hdc, centerx, centery, NULL);
2341             LineTo(hdc, centerx, item->rect.bottom + 1);
2342         }
2343
2344         /* Draw the line from our parent to its next sibling. */
2345         parent = item->parent;
2346         while (parent != infoPtr->root)
2347         {
2348             int pcenterx = (parent->linesOffset + parent->stateOffset) / 2;
2349
2350             if (parent->nextSibling
2351                 /* skip top-levels unless TVS_LINESATROOT */
2352                 && parent->stateOffset > parent->linesOffset)
2353             {
2354                 MoveToEx(hdc, pcenterx, item->rect.top, NULL);
2355                 LineTo(hdc, pcenterx, item->rect.bottom + 1);
2356             }
2357
2358             parent = parent->parent;
2359         }
2360
2361         SelectObject(hdc, hOldPen);
2362         DeleteObject(hNewPen);
2363     }
2364
2365     /*
2366      * Display the (+/-) signs
2367      */
2368
2369     if (infoPtr->dwStyle & TVS_HASBUTTONS)
2370     {
2371         if (item->cChildren)
2372         {
2373             HTHEME theme = GetWindowTheme(infoPtr->hwnd);
2374             if (theme)
2375             {
2376                 RECT glyphRect = item->rect;
2377                 glyphRect.left = item->linesOffset;
2378                 glyphRect.right = item->stateOffset;
2379                 DrawThemeBackground (theme, hdc, TVP_GLYPH,
2380                     (item->state & TVIS_EXPANDED) ? GLPS_OPENED : GLPS_CLOSED,
2381                     &glyphRect, NULL);
2382             }
2383             else
2384             {
2385                 LONG height = item->rect.bottom - item->rect.top;
2386                 LONG width  = item->stateOffset - item->linesOffset;
2387                 LONG rectsize = min(height, width) / 4;
2388                 /* plussize = ceil(rectsize * 3/4) */
2389                 LONG plussize = (rectsize + 1) * 3 / 4;
2390
2391                 HPEN hNewPen  = CreatePen(PS_SOLID, 0, infoPtr->clrLine);
2392                 HPEN hOldPen  = SelectObject(hdc, hNewPen);
2393
2394                 Rectangle(hdc, centerx - rectsize - 1, centery - rectsize - 1,
2395                           centerx + rectsize + 2, centery + rectsize + 2);
2396
2397                 SelectObject(hdc, hOldPen);
2398                 DeleteObject(hNewPen);
2399
2400                 if (height < 18 || width < 18)
2401                 {
2402                     MoveToEx(hdc, centerx - plussize + 1, centery, NULL);
2403                     LineTo(hdc, centerx + plussize, centery);
2404
2405                     if (!(item->state & TVIS_EXPANDED))
2406                     {
2407                         MoveToEx(hdc, centerx, centery - plussize + 1, NULL);
2408                         LineTo(hdc, centerx, centery + plussize);
2409                     }
2410                 }
2411                 else
2412                 {
2413                     Rectangle(hdc, centerx - plussize + 1, centery - 1,
2414                     centerx + plussize, centery + 2);
2415
2416                     if (!(item->state & TVIS_EXPANDED))
2417                     {
2418                         Rectangle(hdc, centerx - 1, centery - plussize + 1,
2419                         centerx + 2, centery + plussize);
2420                         SetPixel(hdc, centerx - 1, centery, infoPtr->clrBk);
2421                         SetPixel(hdc, centerx + 1, centery, infoPtr->clrBk);
2422                     }
2423                 }
2424             }
2425         }
2426     }
2427     SelectObject(hdc, hbrOld);
2428     DeleteObject(hbr);
2429 }
2430
2431 static void
2432 TREEVIEW_DrawItem(TREEVIEW_INFO *infoPtr, HDC hdc, TREEVIEW_ITEM *wineItem)
2433 {
2434     INT cditem;
2435     HFONT hOldFont;
2436     COLORREF oldTextColor, oldTextBkColor;
2437     int centery;
2438     BOOL inFocus = (GetFocus() == infoPtr->hwnd);
2439     NMTVCUSTOMDRAW nmcdhdr;
2440
2441     TREEVIEW_UpdateDispInfo(infoPtr, wineItem, CALLBACK_MASK_ALL);
2442
2443     /* - If item is drop target or it is selected and window is in focus -
2444      * use blue background (COLOR_HIGHLIGHT).
2445      * - If item is selected, window is not in focus, but it has style
2446      * TVS_SHOWSELALWAYS - use grey background (COLOR_BTNFACE)
2447      * - Otherwise - use background color
2448      */
2449     if ((wineItem->state & TVIS_DROPHILITED) || ((wineItem == infoPtr->focusedItem) && !(wineItem->state & TVIS_SELECTED)) ||
2450         ((wineItem->state & TVIS_SELECTED) && (!infoPtr->focusedItem) &&
2451          (inFocus || (infoPtr->dwStyle & TVS_SHOWSELALWAYS))))
2452     {
2453         if ((wineItem->state & TVIS_DROPHILITED) || inFocus)
2454         {
2455             nmcdhdr.clrTextBk = GetSysColor(COLOR_HIGHLIGHT);
2456             nmcdhdr.clrText   = GetSysColor(COLOR_HIGHLIGHTTEXT);
2457         }
2458         else
2459         {
2460             nmcdhdr.clrTextBk = GetSysColor(COLOR_BTNFACE);
2461             if (infoPtr->clrText == -1)
2462                 nmcdhdr.clrText = GetSysColor(COLOR_WINDOWTEXT);
2463             else
2464                 nmcdhdr.clrText = infoPtr->clrText;
2465         }
2466     }
2467     else
2468     {
2469         nmcdhdr.clrTextBk = infoPtr->clrBk;
2470         if ((infoPtr->dwStyle & TVS_TRACKSELECT) && (wineItem == infoPtr->hotItem))
2471             nmcdhdr.clrText = comctl32_color.clrHighlight;
2472         else if (infoPtr->clrText == -1)
2473             nmcdhdr.clrText = GetSysColor(COLOR_WINDOWTEXT);
2474         else
2475             nmcdhdr.clrText = infoPtr->clrText;
2476     }
2477
2478     hOldFont = SelectObject(hdc, TREEVIEW_FontForItem(infoPtr, wineItem));
2479
2480     /* The custom draw handler can query the text rectangle,
2481      * so get ready. */
2482     /* should already be known, set to 0 when changed */
2483     if (!wineItem->textWidth)
2484         TREEVIEW_ComputeTextWidth(infoPtr, wineItem, hdc);
2485
2486     cditem = 0;
2487
2488     if (infoPtr->cdmode & CDRF_NOTIFYITEMDRAW)
2489     {
2490         cditem = TREEVIEW_SendCustomDrawItemNotify
2491             (infoPtr, hdc, wineItem, CDDS_ITEMPREPAINT, &nmcdhdr);
2492         TRACE("prepaint:cditem-app returns 0x%x\n", cditem);
2493
2494         if (cditem & CDRF_SKIPDEFAULT)
2495         {
2496             SelectObject(hdc, hOldFont);
2497             return;
2498         }
2499     }
2500
2501     if (cditem & CDRF_NEWFONT)
2502         TREEVIEW_ComputeTextWidth(infoPtr, wineItem, hdc);
2503
2504     TREEVIEW_DrawItemLines(infoPtr, hdc, wineItem);
2505
2506     /* Set colors. Custom draw handler can change these so we do this after it. */
2507     oldTextColor = SetTextColor(hdc, nmcdhdr.clrText);
2508     oldTextBkColor = SetBkColor(hdc, nmcdhdr.clrTextBk);
2509
2510     centery = (wineItem->rect.top + wineItem->rect.bottom) / 2;
2511
2512     /*
2513      * Display the images associated with this item
2514      */
2515     {
2516         INT imageIndex;
2517
2518         /* State images are displayed to the left of the Normal image
2519          * image number is in state; zero should be `display no image'.
2520          */
2521         imageIndex = STATEIMAGEINDEX(wineItem->state);
2522
2523         if (infoPtr->himlState && imageIndex)
2524         {
2525             ImageList_Draw(infoPtr->himlState, imageIndex, hdc,
2526                            wineItem->stateOffset,
2527                            centery - infoPtr->stateImageHeight / 2,
2528                            ILD_NORMAL);
2529         }
2530
2531         /* Now, draw the normal image; can be either selected or
2532          * non-selected image.
2533          */
2534
2535         if ((wineItem->state & TVIS_SELECTED) && (wineItem->iSelectedImage >= 0))
2536         {
2537             /* The item is currently selected */
2538             imageIndex = wineItem->iSelectedImage;
2539         }
2540         else
2541         {
2542             /* The item is not selected */
2543             imageIndex = wineItem->iImage;
2544         }
2545
2546         if (infoPtr->himlNormal)
2547         {
2548             int ovlIdx = wineItem->state & TVIS_OVERLAYMASK;
2549
2550             ImageList_Draw(infoPtr->himlNormal, imageIndex, hdc,
2551                            wineItem->imageOffset,
2552                            centery - infoPtr->normalImageHeight / 2,
2553                            ILD_NORMAL | ovlIdx);
2554         }
2555     }
2556
2557
2558     /*
2559      * Display the text associated with this item
2560      */
2561
2562     /* Don't paint item's text if it's being edited */
2563     if (!infoPtr->hwndEdit || (infoPtr->selectedItem != wineItem))
2564     {
2565         if (wineItem->pszText)
2566         {
2567             RECT rcText;
2568
2569             rcText.top = wineItem->rect.top;
2570             rcText.bottom = wineItem->rect.bottom;
2571             rcText.left = wineItem->textOffset;
2572             rcText.right = rcText.left + wineItem->textWidth + 4;
2573
2574             TRACE("drawing text %s at (%ld,%ld)-(%ld,%ld)\n",
2575                   debugstr_w(wineItem->pszText),
2576                   rcText.left, rcText.top, rcText.right, rcText.bottom);
2577
2578             /* Draw it */
2579             ExtTextOutW(hdc, rcText.left + 2, rcText.top + 1,
2580                         ETO_CLIPPED | ETO_OPAQUE,
2581                         &rcText,
2582                         wineItem->pszText,
2583                         lstrlenW(wineItem->pszText),
2584                         NULL);
2585
2586             /* Draw the box around the selected item */
2587             if ((wineItem == infoPtr->selectedItem) && inFocus)
2588             {
2589                 DrawFocusRect(hdc,&rcText);
2590             }
2591
2592         }
2593     }
2594
2595     /* Draw insertion mark if necessary */
2596
2597     if (infoPtr->insertMarkItem)
2598         TRACE("item:%d,mark:%p\n",
2599               TREEVIEW_GetItemIndex(infoPtr, wineItem),
2600               infoPtr->insertMarkItem);
2601
2602     if (wineItem == infoPtr->insertMarkItem)
2603     {
2604         HPEN hNewPen, hOldPen;
2605         int offset;
2606         int left, right;
2607
2608         hNewPen = CreatePen(PS_SOLID, 2, infoPtr->clrInsertMark);
2609         hOldPen = SelectObject(hdc, hNewPen);
2610
2611         if (infoPtr->insertBeforeorAfter)
2612             offset = wineItem->rect.bottom - 1;
2613         else
2614             offset = wineItem->rect.top + 1;
2615
2616         left = wineItem->textOffset - 2;
2617         right = wineItem->textOffset + wineItem->textWidth + 2;
2618
2619         MoveToEx(hdc, left, offset - 3, NULL);
2620         LineTo(hdc, left, offset + 4);
2621
2622         MoveToEx(hdc, left, offset, NULL);
2623         LineTo(hdc, right + 1, offset);
2624
2625         MoveToEx(hdc, right, offset + 3, NULL);
2626         LineTo(hdc, right, offset - 4);
2627
2628         SelectObject(hdc, hOldPen);
2629         DeleteObject(hNewPen);
2630     }
2631
2632     if (cditem & CDRF_NOTIFYPOSTPAINT)
2633     {
2634         cditem = TREEVIEW_SendCustomDrawItemNotify
2635             (infoPtr, hdc, wineItem, CDDS_ITEMPOSTPAINT, &nmcdhdr);
2636         TRACE("postpaint:cditem-app returns 0x%x\n", cditem);
2637     }
2638
2639     /* Restore the hdc state */
2640     SetTextColor(hdc, oldTextColor);
2641     SetBkColor(hdc, oldTextBkColor);
2642     SelectObject(hdc, hOldFont);
2643 }
2644
2645 /* Computes treeHeight and treeWidth and updates the scroll bars.
2646  */
2647 static void
2648 TREEVIEW_UpdateScrollBars(TREEVIEW_INFO *infoPtr)
2649 {
2650     TREEVIEW_ITEM *wineItem;
2651     HWND hwnd = infoPtr->hwnd;
2652     BOOL vert = FALSE;
2653     BOOL horz = FALSE;
2654     SCROLLINFO si;
2655     LONG scrollX = infoPtr->scrollX;
2656
2657     infoPtr->treeWidth = 0;
2658     infoPtr->treeHeight = 0;
2659
2660     /* We iterate through all visible items in order to get the tree height
2661      * and width */
2662     wineItem = infoPtr->root->firstChild;
2663
2664     while (wineItem != NULL)
2665     {
2666         if (ISVISIBLE(wineItem))
2667         {
2668             /* actually we draw text at textOffset + 2 */
2669             if (2+wineItem->textOffset+wineItem->textWidth > infoPtr->treeWidth)
2670                 infoPtr->treeWidth = wineItem->textOffset+wineItem->textWidth+2;
2671
2672             /* This is scroll-adjusted, but we fix this below. */
2673             infoPtr->treeHeight = wineItem->rect.bottom;
2674         }
2675
2676         wineItem = TREEVIEW_GetNextListItem(infoPtr, wineItem);
2677     }
2678
2679     /* Fix the scroll adjusted treeHeight and treeWidth. */
2680     if (infoPtr->root->firstChild)
2681         infoPtr->treeHeight -= infoPtr->root->firstChild->rect.top;
2682
2683     infoPtr->treeWidth += infoPtr->scrollX;
2684
2685     if (infoPtr->dwStyle & TVS_NOSCROLL) return;
2686
2687     /* Adding one scroll bar may take up enough space that it forces us
2688      * to add the other as well. */
2689     if (infoPtr->treeHeight > infoPtr->clientHeight)
2690     {
2691         vert = TRUE;
2692
2693         if (infoPtr->treeWidth
2694             > infoPtr->clientWidth - GetSystemMetrics(SM_CXVSCROLL))
2695             horz = TRUE;
2696     }
2697     else if (infoPtr->treeWidth > infoPtr->clientWidth)
2698         horz = TRUE;
2699
2700     if (!vert && horz && infoPtr->treeHeight
2701         > infoPtr->clientHeight - GetSystemMetrics(SM_CYVSCROLL))
2702         vert = TRUE;
2703
2704     if (horz && (infoPtr->dwStyle & TVS_NOHSCROLL)) horz = FALSE;
2705
2706     si.cbSize = sizeof(SCROLLINFO);
2707     si.fMask  = SIF_POS|SIF_RANGE|SIF_PAGE;
2708     si.nMin   = 0;
2709
2710     if (vert)
2711     {
2712         si.nPage = TREEVIEW_GetVisibleCount(infoPtr);
2713        if ( si.nPage && NULL != infoPtr->firstVisible)
2714        {
2715            si.nPos  = infoPtr->firstVisible->visibleOrder;
2716            si.nMax  = infoPtr->maxVisibleOrder - 1;
2717
2718            SetScrollInfo(hwnd, SB_VERT, &si, TRUE);
2719
2720            if (!(infoPtr->uInternalStatus & TV_VSCROLL))
2721                ShowScrollBar(hwnd, SB_VERT, TRUE);
2722            infoPtr->uInternalStatus |= TV_VSCROLL;
2723        }
2724        else
2725        {
2726            if (infoPtr->uInternalStatus & TV_VSCROLL)
2727                ShowScrollBar(hwnd, SB_VERT, FALSE);
2728            infoPtr->uInternalStatus &= ~TV_VSCROLL;
2729        }
2730     }
2731     else
2732     {
2733         if (infoPtr->uInternalStatus & TV_VSCROLL)
2734             ShowScrollBar(hwnd, SB_VERT, FALSE);
2735         infoPtr->uInternalStatus &= ~TV_VSCROLL;
2736     }
2737
2738     if (horz)
2739     {
2740         si.nPage = infoPtr->clientWidth;
2741         si.nPos  = infoPtr->scrollX;
2742         si.nMax  = infoPtr->treeWidth - 1;
2743
2744         if (si.nPos > si.nMax - max( si.nPage-1, 0 ))
2745         {
2746            si.nPos = si.nMax - max( si.nPage-1, 0 );
2747            scrollX = si.nPos;
2748         }
2749
2750         if (!(infoPtr->uInternalStatus & TV_HSCROLL))
2751             ShowScrollBar(hwnd, SB_HORZ, TRUE);
2752         infoPtr->uInternalStatus |= TV_HSCROLL;
2753
2754         SetScrollInfo(hwnd, SB_HORZ, &si, TRUE);
2755     }
2756     else
2757     {
2758         if (infoPtr->uInternalStatus & TV_HSCROLL)
2759             ShowScrollBar(hwnd, SB_HORZ, FALSE);
2760         infoPtr->uInternalStatus &= ~TV_HSCROLL;
2761
2762         scrollX = 0;
2763     }
2764
2765     if (infoPtr->scrollX != scrollX)
2766     {
2767         TREEVIEW_HScroll(infoPtr,
2768                          MAKEWPARAM(SB_THUMBPOSITION, scrollX));
2769     }
2770
2771     if (!horz)
2772         infoPtr->uInternalStatus &= ~TV_HSCROLL;
2773 }
2774
2775 /* CtrlSpy doesn't mention this, but CorelDRAW's object manager needs it. */
2776 static LRESULT
2777 TREEVIEW_EraseBackground(TREEVIEW_INFO *infoPtr, HDC hDC)
2778 {
2779     HBRUSH hBrush = CreateSolidBrush(infoPtr->clrBk);
2780     RECT rect;
2781
2782     GetClientRect(infoPtr->hwnd, &rect);
2783     FillRect(hDC, &rect, hBrush);
2784     DeleteObject(hBrush);
2785
2786     return 1;
2787 }
2788
2789 static void
2790 TREEVIEW_Refresh(TREEVIEW_INFO *infoPtr, HDC hdc, RECT *rc)
2791 {
2792     HWND hwnd = infoPtr->hwnd;
2793     RECT rect = *rc;
2794     TREEVIEW_ITEM *wineItem;
2795
2796     if (infoPtr->clientHeight == 0 || infoPtr->clientWidth == 0)
2797     {
2798         TRACE("empty window\n");
2799         return;
2800     }
2801
2802     infoPtr->cdmode = TREEVIEW_SendCustomDrawNotify(infoPtr, CDDS_PREPAINT,
2803                                                     hdc, rect);
2804
2805     if (infoPtr->cdmode == CDRF_SKIPDEFAULT)
2806     {
2807         ReleaseDC(hwnd, hdc);
2808         return;
2809     }
2810
2811     for (wineItem = infoPtr->root->firstChild;
2812          wineItem != NULL;
2813          wineItem = TREEVIEW_GetNextListItem(infoPtr, wineItem))
2814     {
2815         if (ISVISIBLE(wineItem))
2816         {
2817             /* Avoid unneeded calculations */
2818             if (wineItem->rect.top > rect.bottom)
2819                 break;
2820             if (wineItem->rect.bottom < rect.top)
2821                 continue;
2822
2823             TREEVIEW_DrawItem(infoPtr, hdc, wineItem);
2824         }
2825     }
2826
2827     TREEVIEW_UpdateScrollBars(infoPtr);
2828
2829     if (infoPtr->cdmode & CDRF_NOTIFYPOSTPAINT)
2830         infoPtr->cdmode =
2831             TREEVIEW_SendCustomDrawNotify(infoPtr, CDDS_POSTPAINT, hdc, rect);
2832 }
2833
2834 static void
2835 TREEVIEW_Invalidate(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
2836 {
2837     if (item != NULL)
2838         InvalidateRect(infoPtr->hwnd, &item->rect, TRUE);
2839     else
2840         InvalidateRect(infoPtr->hwnd, NULL, TRUE);
2841 }
2842
2843 static LRESULT
2844 TREEVIEW_Paint(TREEVIEW_INFO *infoPtr, WPARAM wParam)
2845 {
2846     HDC hdc;
2847     PAINTSTRUCT ps;
2848     RECT rc;
2849
2850     TRACE("\n");
2851
2852     if (wParam)
2853     {
2854         hdc = (HDC)wParam;
2855         GetClientRect(infoPtr->hwnd, &rc);
2856         TREEVIEW_EraseBackground(infoPtr, hdc);
2857     }
2858     else
2859     {
2860         hdc = BeginPaint(infoPtr->hwnd, &ps);
2861         rc = ps.rcPaint;
2862     }
2863
2864     if(infoPtr->bRedraw) /* WM_SETREDRAW sets bRedraw */
2865         TREEVIEW_Refresh(infoPtr, hdc, &rc);
2866
2867     if (!wParam)
2868         EndPaint(infoPtr->hwnd, &ps);
2869
2870     return 0;
2871 }
2872
2873
2874 /* Sorting **************************************************************/
2875
2876 /***************************************************************************
2877  * Forward the DPA local callback to the treeview owner callback
2878  */
2879 static INT WINAPI
2880 TREEVIEW_CallBackCompare(TREEVIEW_ITEM *first, TREEVIEW_ITEM *second, LPTVSORTCB pCallBackSort)
2881 {
2882     /* Forward the call to the client-defined callback */
2883     return pCallBackSort->lpfnCompare(first->lParam,
2884                                       second->lParam,
2885                                       pCallBackSort->lParam);
2886 }
2887
2888 /***************************************************************************
2889  * Treeview native sort routine: sort on item text.
2890  */
2891 static INT WINAPI
2892 TREEVIEW_SortOnName(TREEVIEW_ITEM *first, TREEVIEW_ITEM *second,
2893                      TREEVIEW_INFO *infoPtr)
2894 {
2895     TREEVIEW_UpdateDispInfo(infoPtr, first, TVIF_TEXT);
2896     TREEVIEW_UpdateDispInfo(infoPtr, second, TVIF_TEXT);
2897
2898     if(first->pszText && second->pszText)
2899         return lstrcmpiW(first->pszText, second->pszText);
2900     else if(first->pszText)
2901         return -1;
2902     else if(second->pszText)
2903         return 1;
2904     else
2905         return 0;
2906 }
2907
2908 /* Returns the number of physical children belonging to item. */
2909 static INT
2910 TREEVIEW_CountChildren(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
2911 {
2912     INT cChildren = 0;
2913     HTREEITEM hti;
2914
2915     for (hti = item->firstChild; hti != NULL; hti = hti->nextSibling)
2916         cChildren++;
2917
2918     return cChildren;
2919 }
2920
2921 /* Returns a DPA containing a pointer to each physical child of item in
2922  * sibling order. If item has no children, an empty DPA is returned. */
2923 static HDPA
2924 TREEVIEW_BuildChildDPA(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
2925 {
2926     HTREEITEM child = item->firstChild;
2927
2928     HDPA list = DPA_Create(8);
2929     if (list == 0) return NULL;
2930
2931     for (child = item->firstChild; child != NULL; child = child->nextSibling)
2932     {
2933         if (DPA_InsertPtr(list, INT_MAX, child) == -1)
2934         {
2935             DPA_Destroy(list);
2936             return NULL;
2937         }
2938     }
2939
2940     return list;
2941 }
2942
2943 /***************************************************************************
2944  * Setup the treeview structure with regards of the sort method
2945  * and sort the children of the TV item specified in lParam
2946  * fRecurse: currently unused. Should be zero.
2947  * parent: if pSort!=NULL, should equal pSort->hParent.
2948  *         otherwise, item which child items are to be sorted.
2949  * pSort:  sort method info. if NULL, sort on item text.
2950  *         if non-NULL, sort on item's lParam content, and let the
2951  *         application decide what that means. See also TVM_SORTCHILDRENCB.
2952  */
2953
2954 static LRESULT
2955 TREEVIEW_Sort(TREEVIEW_INFO *infoPtr, BOOL fRecurse, HTREEITEM parent,
2956               LPTVSORTCB pSort)
2957 {
2958     INT cChildren;
2959     PFNDPACOMPARE pfnCompare;
2960     LPARAM lpCompare;
2961
2962     /* undocumented feature: TVI_ROOT or NULL means `sort the whole tree' */
2963     if (parent == TVI_ROOT || parent == NULL)
2964         parent = infoPtr->root;
2965
2966     /* Check for a valid handle to the parent item */
2967     if (!TREEVIEW_ValidItem(infoPtr, parent))
2968     {
2969         ERR("invalid item hParent=%p\n", parent);
2970         return FALSE;
2971     }
2972
2973     if (pSort)
2974     {
2975         pfnCompare = (PFNDPACOMPARE)TREEVIEW_CallBackCompare;
2976         lpCompare = (LPARAM)pSort;
2977     }
2978     else
2979     {
2980         pfnCompare = (PFNDPACOMPARE)TREEVIEW_SortOnName;
2981         lpCompare = (LPARAM)infoPtr;
2982     }
2983
2984     cChildren = TREEVIEW_CountChildren(infoPtr, parent);
2985
2986     /* Make sure there is something to sort */
2987     if (cChildren > 1)
2988     {
2989         /* TREEVIEW_ITEM rechaining */
2990         INT count = 0;
2991         HTREEITEM item = 0;
2992         HTREEITEM nextItem = 0;
2993         HTREEITEM prevItem = 0;
2994
2995         HDPA sortList = TREEVIEW_BuildChildDPA(infoPtr, parent);
2996
2997         if (sortList == NULL)
2998             return FALSE;
2999
3000         /* let DPA sort the list */
3001         DPA_Sort(sortList, pfnCompare, lpCompare);
3002
3003         /* The order of DPA entries has been changed, so fixup the
3004          * nextSibling and prevSibling pointers. */
3005
3006         item = (HTREEITEM)DPA_GetPtr(sortList, count++);
3007         while ((nextItem = (HTREEITEM)DPA_GetPtr(sortList, count++)) != NULL)
3008         {
3009             /* link the two current item toghether */
3010             item->nextSibling = nextItem;
3011             nextItem->prevSibling = item;
3012
3013             if (prevItem == NULL)
3014             {
3015                 /* this is the first item, update the parent */
3016                 parent->firstChild = item;
3017                 item->prevSibling = NULL;
3018             }
3019             else
3020             {
3021                 /* fix the back chaining */
3022                 item->prevSibling = prevItem;
3023             }
3024
3025             /* get ready for the next one */
3026             prevItem = item;
3027             item = nextItem;
3028         }
3029
3030         /* the last item is pointed to by item and never has a sibling */
3031         item->nextSibling = NULL;
3032         parent->lastChild = item;
3033
3034         DPA_Destroy(sortList);
3035
3036         TREEVIEW_VerifyTree(infoPtr);
3037
3038         if (parent->state & TVIS_EXPANDED)
3039         {
3040             int visOrder = infoPtr->firstVisible->visibleOrder;
3041
3042         if (parent == infoPtr->root)
3043             TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
3044         else
3045             TREEVIEW_RecalculateVisibleOrder(infoPtr, parent);
3046
3047             if (TREEVIEW_IsChildOf(parent, infoPtr->firstVisible))
3048             {
3049                 TREEVIEW_ITEM *item;
3050
3051                 for (item = infoPtr->root->firstChild; item != NULL;
3052                      item = TREEVIEW_GetNextListItem(infoPtr, item))
3053                 {
3054                     if (item->visibleOrder == visOrder)
3055                         break;
3056                 }
3057
3058                 if (!item) item = parent->firstChild;
3059                 TREEVIEW_SetFirstVisible(infoPtr, item, FALSE);
3060             }
3061
3062             TREEVIEW_Invalidate(infoPtr, NULL);
3063         }
3064
3065         return TRUE;
3066     }
3067     return FALSE;
3068 }
3069
3070
3071 /***************************************************************************
3072  * Setup the treeview structure with regards of the sort method
3073  * and sort the children of the TV item specified in lParam
3074  */
3075 static LRESULT
3076 TREEVIEW_SortChildrenCB(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPTVSORTCB pSort)
3077 {
3078     return TREEVIEW_Sort(infoPtr, wParam, pSort->hParent, pSort);
3079 }
3080
3081
3082 /***************************************************************************
3083  * Sort the children of the TV item specified in lParam.
3084  */
3085 static LRESULT
3086 TREEVIEW_SortChildren(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
3087 {
3088     return TREEVIEW_Sort(infoPtr, (BOOL)wParam, (HTREEITEM)lParam, NULL);
3089 }
3090
3091
3092 /* Expansion/Collapse ***************************************************/
3093
3094 static BOOL
3095 TREEVIEW_SendExpanding(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
3096                        UINT action)
3097 {
3098     return !TREEVIEW_SendTreeviewNotify(infoPtr, TVN_ITEMEXPANDINGW, action,
3099                                         TVIF_HANDLE | TVIF_STATE | TVIF_PARAM
3100                                         | TVIF_IMAGE | TVIF_SELECTEDIMAGE,
3101                                         0, wineItem);
3102 }
3103
3104 static VOID
3105 TREEVIEW_SendExpanded(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
3106                       UINT action)
3107 {
3108     TREEVIEW_SendTreeviewNotify(infoPtr, TVN_ITEMEXPANDEDW, action,
3109                                 TVIF_HANDLE | TVIF_STATE | TVIF_PARAM
3110                                 | TVIF_IMAGE | TVIF_SELECTEDIMAGE,
3111                                 0, wineItem);
3112 }
3113
3114
3115 /* This corresponds to TVM_EXPAND with TVE_COLLAPSE.
3116  * bRemoveChildren corresponds to TVE_COLLAPSERESET. */
3117 static BOOL
3118 TREEVIEW_Collapse(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
3119                   BOOL bRemoveChildren, BOOL bUser)
3120 {
3121     UINT action = TVE_COLLAPSE | (bRemoveChildren ? TVE_COLLAPSERESET : 0);
3122     BOOL bSetSelection, bSetFirstVisible;
3123     RECT scrollRect;
3124     LONG scrollDist = 0;
3125     TREEVIEW_ITEM *nextItem = NULL, *tmpItem;
3126
3127     TRACE("TVE_COLLAPSE %p %s\n", wineItem, TREEVIEW_ItemName(wineItem));
3128
3129     if (!(wineItem->state & TVIS_EXPANDED))
3130         return FALSE;
3131
3132     if (bUser || !(wineItem->state & TVIS_EXPANDEDONCE))
3133         TREEVIEW_SendExpanding(infoPtr, wineItem, action);
3134
3135     if (wineItem->firstChild == NULL)
3136         return FALSE;
3137
3138     wineItem->state &= ~TVIS_EXPANDED;
3139
3140     if (bUser || !(wineItem->state & TVIS_EXPANDEDONCE))
3141         TREEVIEW_SendExpanded(infoPtr, wineItem, action);
3142
3143     bSetSelection = (infoPtr->selectedItem != NULL
3144                      && TREEVIEW_IsChildOf(wineItem, infoPtr->selectedItem));
3145
3146     bSetFirstVisible = (infoPtr->firstVisible != NULL
3147                         && TREEVIEW_IsChildOf(wineItem, infoPtr->firstVisible));
3148
3149     tmpItem = wineItem;
3150     while (tmpItem)
3151     {
3152         if (tmpItem->nextSibling)
3153         {
3154             nextItem = tmpItem->nextSibling;
3155             break;
3156         }
3157         tmpItem = tmpItem->parent;
3158     }
3159
3160     if (nextItem)
3161         scrollDist = nextItem->rect.top;
3162
3163     if (bRemoveChildren)
3164     {
3165         INT old_cChildren = wineItem->cChildren;
3166         TRACE("TVE_COLLAPSERESET\n");
3167         wineItem->state &= ~TVIS_EXPANDEDONCE;
3168         TREEVIEW_RemoveAllChildren(infoPtr, wineItem);
3169         wineItem->cChildren = old_cChildren;
3170     }
3171
3172     if (wineItem->firstChild)
3173     {
3174         TREEVIEW_ITEM *item, *sibling;
3175
3176         sibling = TREEVIEW_GetNextListItem(infoPtr, wineItem);
3177
3178         for (item = wineItem->firstChild; item != sibling;
3179              item = TREEVIEW_GetNextListItem(infoPtr, item))
3180         {
3181             item->visibleOrder = -1;
3182         }
3183     }
3184
3185     TREEVIEW_RecalculateVisibleOrder(infoPtr, wineItem);
3186
3187     if (nextItem)
3188         scrollDist = -(scrollDist - nextItem->rect.top);
3189
3190     if (bSetSelection)
3191     {
3192         /* Don't call DoSelectItem, it sends notifications. */
3193         if (TREEVIEW_ValidItem(infoPtr, infoPtr->selectedItem))
3194             infoPtr->selectedItem->state &= ~TVIS_SELECTED;
3195         wineItem->state |= TVIS_SELECTED;
3196         infoPtr->selectedItem = wineItem;
3197     }
3198
3199     TREEVIEW_UpdateScrollBars(infoPtr);
3200
3201     scrollRect.left = 0;
3202     scrollRect.right = infoPtr->clientWidth;
3203     scrollRect.bottom = infoPtr->clientHeight;
3204
3205     if (nextItem)
3206     {
3207         scrollRect.top = nextItem->rect.top;
3208
3209         ScrollWindowEx (infoPtr->hwnd, 0, scrollDist, &scrollRect, NULL,
3210                        NULL, NULL, SW_ERASE | SW_INVALIDATE);
3211         TREEVIEW_Invalidate(infoPtr, wineItem);
3212     } else {
3213         scrollRect.top = wineItem->rect.top;
3214         InvalidateRect(infoPtr->hwnd, &scrollRect, TRUE);
3215     }
3216
3217     TREEVIEW_SetFirstVisible(infoPtr,
3218                              bSetFirstVisible ? wineItem : infoPtr->firstVisible,
3219                              TRUE);
3220
3221     return TRUE;
3222 }
3223
3224 static BOOL
3225 TREEVIEW_Expand(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
3226                 BOOL bExpandPartial, BOOL bUser)
3227 {
3228     LONG scrollDist;
3229     LONG orgNextTop = 0;
3230     RECT scrollRect;
3231     TREEVIEW_ITEM *nextItem, *tmpItem;
3232
3233     TRACE("\n");
3234
3235     if (wineItem->state & TVIS_EXPANDED)
3236        return TRUE;
3237
3238     tmpItem = wineItem; nextItem = NULL;
3239     while (tmpItem)
3240     {
3241         if (tmpItem->nextSibling)
3242         {
3243             nextItem = tmpItem->nextSibling;
3244             break;
3245         }
3246         tmpItem = tmpItem->parent;
3247     }
3248
3249     if (nextItem)
3250         orgNextTop = nextItem->rect.top;
3251
3252     TRACE("TVE_EXPAND %p %s\n", wineItem, TREEVIEW_ItemName(wineItem));
3253
3254     if (bUser || ((wineItem->cChildren != 0) &&
3255                   !(wineItem->state & TVIS_EXPANDEDONCE)))
3256     {
3257         if (!TREEVIEW_SendExpanding(infoPtr, wineItem, TVE_EXPAND))
3258         {
3259             TRACE("  TVN_ITEMEXPANDING returned TRUE, exiting...\n");
3260             return FALSE;
3261         }
3262
3263         if (!wineItem->firstChild)
3264             return FALSE;
3265
3266         wineItem->state |= TVIS_EXPANDED;
3267         TREEVIEW_SendExpanded(infoPtr, wineItem, TVE_EXPAND);
3268         wineItem->state |= TVIS_EXPANDEDONCE;
3269     }
3270     else
3271     {
3272         if (!wineItem->firstChild)
3273             return FALSE;
3274
3275         /* this item has already been expanded */
3276         wineItem->state |= TVIS_EXPANDED;
3277     }
3278
3279     if (bExpandPartial)
3280         FIXME("TVE_EXPANDPARTIAL not implemented\n");
3281
3282     TREEVIEW_RecalculateVisibleOrder(infoPtr, wineItem);
3283     TREEVIEW_UpdateSubTree(infoPtr, wineItem);
3284     TREEVIEW_UpdateScrollBars(infoPtr);
3285
3286     scrollRect.left = 0;
3287     scrollRect.bottom = infoPtr->treeHeight;
3288     scrollRect.right = infoPtr->clientWidth;
3289     if (nextItem)
3290     {
3291         scrollDist = nextItem->rect.top - orgNextTop;
3292         scrollRect.top = orgNextTop;
3293
3294         ScrollWindowEx (infoPtr->hwnd, 0, scrollDist, &scrollRect, NULL,
3295                        NULL, NULL, SW_ERASE | SW_INVALIDATE);
3296         TREEVIEW_Invalidate (infoPtr, wineItem);
3297     } else {
3298         scrollRect.top = wineItem->rect.top;
3299         InvalidateRect(infoPtr->hwnd, &scrollRect, FALSE);
3300     }
3301
3302     /* Scroll up so that as many children as possible are visible.
3303      * This fails when expanding causes an HScroll bar to appear, but we
3304      * don't know that yet, so the last item is obscured. */
3305     if (wineItem->firstChild != NULL)
3306     {
3307         int nChildren = wineItem->lastChild->visibleOrder
3308             - wineItem->firstChild->visibleOrder + 1;
3309
3310         int visible_pos = wineItem->visibleOrder
3311             - infoPtr->firstVisible->visibleOrder;
3312
3313         int rows_below = TREEVIEW_GetVisibleCount(infoPtr) - visible_pos - 1;
3314
3315         if (visible_pos > 0 && nChildren > rows_below)
3316         {
3317             int scroll = nChildren - rows_below;
3318
3319             if (scroll > visible_pos)
3320                 scroll = visible_pos;
3321
3322             if (scroll > 0)
3323             {
3324                 TREEVIEW_ITEM *newFirstVisible
3325                     = TREEVIEW_GetListItem(infoPtr, infoPtr->firstVisible,
3326                                            scroll);
3327
3328
3329                 TREEVIEW_SetFirstVisible(infoPtr, newFirstVisible, TRUE);
3330             }
3331         }
3332     }
3333
3334     return TRUE;
3335 }
3336
3337 static BOOL
3338 TREEVIEW_Toggle(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem, BOOL bUser)
3339 {
3340     TRACE("\n");
3341
3342     if (wineItem->state & TVIS_EXPANDED)
3343         return TREEVIEW_Collapse(infoPtr, wineItem, FALSE, bUser);
3344     else
3345         return TREEVIEW_Expand(infoPtr, wineItem, FALSE, bUser);
3346 }
3347
3348 static VOID
3349 TREEVIEW_ExpandAll(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
3350 {
3351     TREEVIEW_Expand(infoPtr, item, FALSE, TRUE);
3352
3353     for (item = item->firstChild; item != NULL; item = item->nextSibling)
3354     {
3355         if (TREEVIEW_HasChildren(infoPtr, item))
3356             TREEVIEW_ExpandAll(infoPtr, item);
3357     }
3358 }
3359
3360 /* Note:If the specified item is the child of a collapsed parent item,
3361    the parent's list of child items is (recursively) expanded to reveal the
3362    specified item. This is mentioned for TREEVIEW_SelectItem; don't
3363    know if it also applies here.
3364 */
3365
3366 static LRESULT
3367 TREEVIEW_ExpandMsg(TREEVIEW_INFO *infoPtr, UINT flag, HTREEITEM wineItem)
3368 {
3369     if (!TREEVIEW_ValidItem(infoPtr, wineItem))
3370         return 0;
3371
3372     TRACE("For (%s) item:%d, flags %x, state:%d\n",
3373               TREEVIEW_ItemName(wineItem), flag,
3374               TREEVIEW_GetItemIndex(infoPtr, wineItem), wineItem->state);
3375
3376     switch (flag & TVE_TOGGLE)
3377     {
3378     case TVE_COLLAPSE:
3379         return TREEVIEW_Collapse(infoPtr, wineItem, flag & TVE_COLLAPSERESET,
3380                                  FALSE);
3381
3382     case TVE_EXPAND:
3383         return TREEVIEW_Expand(infoPtr, wineItem, flag & TVE_EXPANDPARTIAL,
3384                                FALSE);
3385
3386     case TVE_TOGGLE:
3387         return TREEVIEW_Toggle(infoPtr, wineItem, TRUE);
3388
3389     default:
3390         return 0;
3391     }
3392
3393 #if 0
3394     TRACE("Exiting, Item %p state is now %d...\n", wineItem, wineItem->state);
3395 #endif
3396 }
3397
3398 /* Hit-Testing **********************************************************/
3399
3400 static TREEVIEW_ITEM *
3401 TREEVIEW_HitTestPoint(TREEVIEW_INFO *infoPtr, POINT pt)
3402 {
3403     TREEVIEW_ITEM *wineItem;
3404     LONG row;
3405
3406     if (!infoPtr->firstVisible)
3407         return NULL;
3408
3409     row = pt.y / infoPtr->uItemHeight + infoPtr->firstVisible->visibleOrder;
3410
3411     for (wineItem = infoPtr->firstVisible; wineItem != NULL;
3412          wineItem = TREEVIEW_GetNextListItem(infoPtr, wineItem))
3413     {
3414         if (row >= wineItem->visibleOrder
3415             && row < wineItem->visibleOrder + wineItem->iIntegral)
3416             break;
3417     }
3418
3419     return wineItem;
3420 }
3421
3422 static LRESULT
3423 TREEVIEW_HitTest(TREEVIEW_INFO *infoPtr, LPTVHITTESTINFO lpht)
3424 {
3425     TREEVIEW_ITEM *wineItem;
3426     RECT rect;
3427     UINT status;
3428     LONG x, y;
3429
3430     lpht->hItem = 0;
3431     GetClientRect(infoPtr->hwnd, &rect);
3432     status = 0;
3433     x = lpht->pt.x;
3434     y = lpht->pt.y;
3435
3436     if (x < rect.left)
3437     {
3438         status |= TVHT_TOLEFT;
3439     }
3440     else if (x > rect.right)
3441     {
3442         status |= TVHT_TORIGHT;
3443     }
3444
3445     if (y < rect.top)
3446     {
3447         status |= TVHT_ABOVE;
3448     }
3449     else if (y > rect.bottom)
3450     {
3451         status |= TVHT_BELOW;
3452     }
3453
3454     if (status)
3455     {
3456         lpht->flags = status;
3457         return (LRESULT)(HTREEITEM)NULL;
3458     }
3459
3460     wineItem = TREEVIEW_HitTestPoint(infoPtr, lpht->pt);
3461     if (!wineItem)
3462     {
3463         lpht->flags = TVHT_NOWHERE;
3464         return (LRESULT)(HTREEITEM)NULL;
3465     }
3466
3467     if (x >= wineItem->textOffset + wineItem->textWidth)
3468     {
3469         lpht->flags = TVHT_ONITEMRIGHT;
3470     }
3471     else if (x >= wineItem->textOffset)
3472     {
3473         lpht->flags = TVHT_ONITEMLABEL;
3474     }
3475     else if (x >= wineItem->imageOffset)
3476     {
3477         lpht->flags = TVHT_ONITEMICON;
3478     }
3479     else if (x >= wineItem->stateOffset)
3480     {
3481         lpht->flags = TVHT_ONITEMSTATEICON;
3482     }
3483     else if (x >= wineItem->linesOffset && infoPtr->dwStyle & TVS_HASBUTTONS)
3484     {
3485         lpht->flags = TVHT_ONITEMBUTTON;
3486     }
3487     else
3488     {
3489         lpht->flags = TVHT_ONITEMINDENT;
3490     }
3491
3492     lpht->hItem = wineItem;
3493     TRACE("(%ld,%ld):result %x\n", lpht->pt.x, lpht->pt.y, lpht->flags);
3494
3495     return (LRESULT)wineItem;
3496 }
3497
3498 /* Item Label Editing ***************************************************/
3499
3500 static LRESULT
3501 TREEVIEW_GetEditControl(TREEVIEW_INFO *infoPtr)
3502 {
3503     return (LRESULT)infoPtr->hwndEdit;
3504 }
3505
3506 static LRESULT CALLBACK
3507 TREEVIEW_Edit_SubclassProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
3508 {
3509     TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(GetParent(hwnd));
3510     BOOL bCancel = FALSE;
3511     LRESULT rc;
3512
3513     switch (uMsg)
3514     {
3515     case WM_PAINT:
3516          TRACE("WM_PAINT start\n");
3517          rc = CallWindowProcW(infoPtr->wpEditOrig, hwnd, uMsg, wParam,
3518                                  lParam);
3519          TRACE("WM_PAINT done\n");
3520          return rc;
3521
3522     case WM_KILLFOCUS:
3523         if (infoPtr->bIgnoreEditKillFocus)
3524             return TRUE;
3525         break;
3526
3527     case WM_GETDLGCODE:
3528         return DLGC_WANTARROWS | DLGC_WANTALLKEYS;
3529
3530     case WM_KEYDOWN:
3531         if (wParam == (WPARAM)VK_ESCAPE)
3532         {
3533             bCancel = TRUE;
3534             break;
3535         }
3536         else if (wParam == (WPARAM)VK_RETURN)
3537         {
3538             break;
3539         }
3540
3541         /* fall through */
3542     default:
3543         return CallWindowProcW(infoPtr->wpEditOrig, hwnd, uMsg, wParam, lParam);
3544     }
3545
3546     /* Processing TVN_ENDLABELEDIT message could kill the focus       */
3547     /* eg. Using a messagebox                                         */
3548
3549     infoPtr->bIgnoreEditKillFocus = TRUE;
3550     TREEVIEW_EndEditLabelNow(infoPtr, bCancel || !infoPtr->bLabelChanged);
3551     infoPtr->bIgnoreEditKillFocus = FALSE;
3552
3553     return 0;
3554 }
3555
3556
3557 /* should handle edit control messages here */
3558
3559 static LRESULT
3560 TREEVIEW_Command(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
3561 {
3562     TRACE("%x %ld\n", wParam, lParam);
3563
3564     switch (HIWORD(wParam))
3565     {
3566     case EN_UPDATE:
3567         {
3568             /*
3569              * Adjust the edit window size
3570              */
3571             WCHAR buffer[1024];
3572             TREEVIEW_ITEM *editItem = infoPtr->selectedItem;
3573             HDC hdc = GetDC(infoPtr->hwndEdit);
3574             SIZE sz;
3575             int len;
3576             HFONT hFont, hOldFont = 0;
3577
3578             infoPtr->bLabelChanged = TRUE;
3579
3580             len = GetWindowTextW(infoPtr->hwndEdit, buffer, sizeof(buffer));
3581
3582             /* Select font to get the right dimension of the string */
3583             hFont = (HFONT)SendMessageW(infoPtr->hwndEdit, WM_GETFONT, 0, 0);
3584
3585             if (hFont != 0)
3586             {
3587                 hOldFont = SelectObject(hdc, hFont);
3588             }
3589
3590             if (GetTextExtentPoint32W(hdc, buffer, strlenW(buffer), &sz))
3591             {
3592                 TEXTMETRICW textMetric;
3593
3594                 /* Add Extra spacing for the next character */
3595                 GetTextMetricsW(hdc, &textMetric);
3596                 sz.cx += (textMetric.tmMaxCharWidth * 2);
3597
3598                 sz.cx = max(sz.cx, textMetric.tmMaxCharWidth * 3);
3599                 sz.cx = min(sz.cx,
3600                             infoPtr->clientWidth - editItem->textOffset + 2);
3601
3602                 SetWindowPos(infoPtr->hwndEdit,
3603                              HWND_TOP,
3604                              0,
3605                              0,
3606                              sz.cx,
3607                              editItem->rect.bottom - editItem->rect.top + 3,
3608                              SWP_NOMOVE | SWP_DRAWFRAME);
3609             }
3610
3611             if (hFont != 0)
3612             {
3613                 SelectObject(hdc, hOldFont);
3614             }
3615
3616             ReleaseDC(infoPtr->hwnd, hdc);
3617             break;
3618         }
3619
3620     default:
3621         return SendMessageW(infoPtr->hwndNotify, WM_COMMAND, wParam, lParam);
3622     }
3623
3624     return 0;
3625 }
3626
3627 static HWND
3628 TREEVIEW_EditLabel(TREEVIEW_INFO *infoPtr, HTREEITEM hItem)
3629 {
3630     HWND hwnd = infoPtr->hwnd;
3631     HWND hwndEdit;
3632     SIZE sz;
3633     TREEVIEW_ITEM *editItem = hItem;
3634     HINSTANCE hinst = (HINSTANCE)GetWindowLongPtrW(hwnd, GWLP_HINSTANCE);
3635     HDC hdc;
3636     HFONT hOldFont=0;
3637     TEXTMETRICW textMetric;
3638     static const WCHAR EditW[] = {'E','d','i','t',0};
3639
3640     TRACE("%p %p\n", hwnd, hItem);
3641     if (!TREEVIEW_ValidItem(infoPtr, editItem))
3642         return NULL;
3643
3644     if (infoPtr->hwndEdit)
3645         return infoPtr->hwndEdit;
3646
3647     infoPtr->bLabelChanged = FALSE;
3648
3649     /* Make sure that edit item is selected */
3650     TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, hItem, TVC_UNKNOWN);
3651     TREEVIEW_EnsureVisible(infoPtr, hItem, TRUE);
3652
3653     TREEVIEW_UpdateDispInfo(infoPtr, editItem, TVIF_TEXT);
3654
3655     hdc = GetDC(hwnd);
3656     /* Select the font to get appropriate metric dimensions */
3657     if (infoPtr->hFont != 0)
3658     {
3659         hOldFont = SelectObject(hdc, infoPtr->hFont);
3660     }
3661
3662     /* Get string length in pixels */
3663     GetTextExtentPoint32W(hdc, editItem->pszText, strlenW(editItem->pszText),
3664                           &sz);
3665
3666     /* Add Extra spacing for the next character */
3667     GetTextMetricsW(hdc, &textMetric);
3668     sz.cx += (textMetric.tmMaxCharWidth * 2);
3669
3670     sz.cx = max(sz.cx, textMetric.tmMaxCharWidth * 3);
3671     sz.cx = min(sz.cx, infoPtr->clientWidth - editItem->textOffset + 2);
3672
3673     if (infoPtr->hFont != 0)
3674     {
3675         SelectObject(hdc, hOldFont);
3676     }
3677
3678     ReleaseDC(hwnd, hdc);
3679     hwndEdit = CreateWindowExW(WS_EX_LEFT,
3680                                EditW,
3681                                0,
3682                                WS_CHILD | WS_BORDER | ES_AUTOHSCROLL |
3683                                WS_CLIPSIBLINGS | ES_WANTRETURN |
3684                                ES_LEFT, editItem->textOffset - 2,
3685                                editItem->rect.top - 1, sz.cx + 3,
3686                                editItem->rect.bottom -
3687                                editItem->rect.top + 3, hwnd, 0, hinst, 0);
3688 /* FIXME: (HMENU)IDTVEDIT,pcs->hInstance,0); */
3689
3690     infoPtr->hwndEdit = hwndEdit;
3691
3692     /* Get a 2D border. */
3693     SetWindowLongW(hwndEdit, GWL_EXSTYLE,
3694                    GetWindowLongW(hwndEdit, GWL_EXSTYLE) & ~WS_EX_CLIENTEDGE);
3695     SetWindowLongW(hwndEdit, GWL_STYLE,
3696                    GetWindowLongW(hwndEdit, GWL_STYLE) | WS_BORDER);
3697
3698     SendMessageW(hwndEdit, WM_SETFONT,
3699                  (WPARAM)TREEVIEW_FontForItem(infoPtr, editItem), FALSE);
3700
3701     infoPtr->wpEditOrig = (WNDPROC)SetWindowLongPtrW(hwndEdit, GWLP_WNDPROC,
3702                                                   (DWORD_PTR)
3703                                                   TREEVIEW_Edit_SubclassProc);
3704
3705     if (TREEVIEW_BeginLabelEditNotify(infoPtr, editItem))
3706     {
3707         DestroyWindow(hwndEdit);
3708         infoPtr->hwndEdit = 0;
3709         return NULL;
3710     }
3711
3712     infoPtr->selectedItem = hItem;
3713     SetWindowTextW(hwndEdit, editItem->pszText);
3714     SetFocus(hwndEdit);
3715     SendMessageW(hwndEdit, EM_SETSEL, 0, -1);
3716     ShowWindow(hwndEdit, SW_SHOW);
3717
3718     return hwndEdit;
3719 }
3720
3721
3722 static LRESULT
3723 TREEVIEW_EndEditLabelNow(TREEVIEW_INFO *infoPtr, BOOL bCancel)
3724 {
3725     HWND hwnd = infoPtr->hwnd;
3726     TREEVIEW_ITEM *editedItem = infoPtr->selectedItem;
3727     NMTVDISPINFOW tvdi;
3728     BOOL bCommit;
3729     WCHAR tmpText[1024] = { '\0' };
3730     WCHAR *newText = tmpText;
3731     int iLength = 0;
3732
3733     if (!infoPtr->hwndEdit)
3734         return FALSE;
3735
3736     tvdi.hdr.hwndFrom = hwnd;
3737     tvdi.hdr.idFrom = GetWindowLongPtrW(hwnd, GWLP_ID);
3738     tvdi.hdr.code = get_notifycode(infoPtr, TVN_ENDLABELEDITW);
3739     tvdi.item.mask = 0;
3740     tvdi.item.hItem = editedItem;
3741     tvdi.item.state = editedItem->state;
3742     tvdi.item.lParam = editedItem->lParam;
3743
3744     if (!bCancel)
3745     {
3746         if (!infoPtr->bNtfUnicode)
3747             iLength = GetWindowTextA(infoPtr->hwndEdit, (LPSTR)tmpText, 1023);
3748         else
3749             iLength = GetWindowTextW(infoPtr->hwndEdit, tmpText, 1023);
3750
3751         if (iLength >= 1023)
3752         {
3753             ERR("Insufficient space to retrieve new item label\n");
3754         }
3755
3756         tvdi.item.mask = TVIF_TEXT;
3757         tvdi.item.pszText = tmpText;
3758         tvdi.item.cchTextMax = iLength + 1;
3759     }
3760     else
3761     {
3762         tvdi.item.pszText = NULL;
3763         tvdi.item.cchTextMax = 0;
3764     }
3765
3766     bCommit = (BOOL)TREEVIEW_SendRealNotify(infoPtr,
3767                                  (WPARAM)tvdi.hdr.idFrom, (LPARAM)&tvdi);
3768
3769     if (!bCancel && bCommit)    /* Apply the changes */
3770     {
3771         if (!infoPtr->bNtfUnicode)
3772         {
3773             DWORD len = MultiByteToWideChar( CP_ACP, 0, (LPSTR)tmpText, -1, NULL, 0 );
3774             newText = Alloc(len * sizeof(WCHAR));
3775             MultiByteToWideChar( CP_ACP, 0, (LPSTR)tmpText, -1, newText, len );
3776             iLength = len - 1;
3777         }
3778
3779         if (strcmpW(newText, editedItem->pszText) != 0)
3780         {
3781             if (NULL == ReAlloc(editedItem->pszText, iLength + 1))
3782             {
3783                 ERR("OutOfMemory, cannot allocate space for label\n");
3784                 DestroyWindow(infoPtr->hwndEdit);
3785                 infoPtr->hwndEdit = 0;
3786                 return FALSE;
3787             }
3788             else
3789             {
3790                 editedItem->cchTextMax = iLength + 1;
3791                 strcpyW(editedItem->pszText, newText);
3792             }
3793         }
3794         if(newText != tmpText) Free(newText);
3795     }
3796
3797     ShowWindow(infoPtr->hwndEdit, SW_HIDE);
3798     DestroyWindow(infoPtr->hwndEdit);
3799     infoPtr->hwndEdit = 0;
3800     return TRUE;
3801 }
3802
3803 static LRESULT
3804 TREEVIEW_HandleTimer(TREEVIEW_INFO *infoPtr, WPARAM wParam)
3805 {
3806     if (wParam != TV_EDIT_TIMER)
3807     {
3808         ERR("got unknown timer\n");
3809         return 1;
3810     }
3811
3812     KillTimer(infoPtr->hwnd, TV_EDIT_TIMER);
3813     infoPtr->Timer &= ~TV_EDIT_TIMER_SET;
3814
3815     TREEVIEW_EditLabel(infoPtr, infoPtr->selectedItem);
3816
3817     return 0;
3818 }
3819
3820
3821 /* Mouse Tracking/Drag **************************************************/
3822
3823 /***************************************************************************
3824  * This is quite unusual piece of code, but that's how it's implemented in
3825  * Windows.
3826  */
3827 static LRESULT
3828 TREEVIEW_TrackMouse(TREEVIEW_INFO *infoPtr, POINT pt)
3829 {
3830     INT cxDrag = GetSystemMetrics(SM_CXDRAG);
3831     INT cyDrag = GetSystemMetrics(SM_CYDRAG);
3832     RECT r;
3833     MSG msg;
3834
3835     r.top = pt.y - cyDrag;
3836     r.left = pt.x - cxDrag;
3837     r.bottom = pt.y + cyDrag;
3838     r.right = pt.x + cxDrag;
3839
3840     SetCapture(infoPtr->hwnd);
3841
3842     while (1)
3843     {
3844         if (PeekMessageW(&msg, 0, 0, 0, PM_REMOVE | PM_NOYIELD))
3845         {
3846             if (msg.message == WM_MOUSEMOVE)
3847             {
3848                 pt.x = (short)LOWORD(msg.lParam);
3849                 pt.y = (short)HIWORD(msg.lParam);
3850                 if (PtInRect(&r, pt))
3851                     continue;
3852                 else
3853                 {
3854                     ReleaseCapture();
3855                     return 1;
3856                 }
3857             }
3858             else if (msg.message >= WM_LBUTTONDOWN &&
3859                      msg.message <= WM_RBUTTONDBLCLK)
3860             {
3861                 if (msg.message == WM_RBUTTONUP)
3862                     TREEVIEW_RButtonUp(infoPtr, &pt);
3863                 break;
3864             }
3865
3866             DispatchMessageW(&msg);
3867         }
3868
3869         if (GetCapture() != infoPtr->hwnd)
3870             return 0;
3871     }
3872
3873     ReleaseCapture();
3874     return 0;
3875 }
3876
3877
3878 static LRESULT
3879 TREEVIEW_LButtonDoubleClick(TREEVIEW_INFO *infoPtr, LPARAM lParam)
3880 {
3881     TREEVIEW_ITEM *wineItem;
3882     TVHITTESTINFO hit;
3883
3884     TRACE("\n");
3885     SetFocus(infoPtr->hwnd);
3886
3887     if (infoPtr->Timer & TV_EDIT_TIMER_SET)
3888     {
3889         /* If there is pending 'edit label' event - kill it now */
3890         KillTimer(infoPtr->hwnd, TV_EDIT_TIMER);
3891     }
3892
3893     hit.pt.x = (short)LOWORD(lParam);
3894     hit.pt.y = (short)HIWORD(lParam);
3895
3896     wineItem = (TREEVIEW_ITEM *)TREEVIEW_HitTest(infoPtr, &hit);
3897     if (!wineItem)
3898         return 0;
3899     TRACE("item %d\n", TREEVIEW_GetItemIndex(infoPtr, wineItem));
3900
3901     if (TREEVIEW_SendSimpleNotify(infoPtr, NM_DBLCLK) == FALSE)
3902     {                           /* FIXME! */
3903         switch (hit.flags)
3904         {
3905         case TVHT_ONITEMRIGHT:
3906             /* FIXME: we should not have sent NM_DBLCLK in this case. */
3907             break;
3908
3909         case TVHT_ONITEMINDENT:
3910             if (!(infoPtr->dwStyle & TVS_HASLINES))
3911             {
3912                 break;
3913             }
3914             else
3915             {
3916                 int level = hit.pt.x / infoPtr->uIndent;
3917                 if (!(infoPtr->dwStyle & TVS_LINESATROOT)) level++;
3918
3919                 while (wineItem->iLevel > level)
3920                 {
3921                     wineItem = wineItem->parent;
3922                 }
3923
3924                 /* fall through */
3925             }
3926
3927         case TVHT_ONITEMLABEL:
3928         case TVHT_ONITEMICON:
3929         case TVHT_ONITEMBUTTON:
3930             TREEVIEW_Toggle(infoPtr, wineItem, TRUE);
3931             break;
3932
3933         case TVHT_ONITEMSTATEICON:
3934            if (infoPtr->dwStyle & TVS_CHECKBOXES)
3935                TREEVIEW_ToggleItemState(infoPtr, wineItem);
3936            else
3937                TREEVIEW_Toggle(infoPtr, wineItem, TRUE);
3938            break;
3939         }
3940     }
3941     return TRUE;
3942 }
3943
3944
3945 static LRESULT
3946 TREEVIEW_LButtonDown(TREEVIEW_INFO *infoPtr, LPARAM lParam)
3947 {
3948     HWND hwnd = infoPtr->hwnd;
3949     TVHITTESTINFO ht;
3950     BOOL bTrack, bDoLabelEdit;
3951     HTREEITEM tempItem;
3952
3953     /* If Edit control is active - kill it and return.
3954      * The best way to do it is to set focus to itself.
3955      * Edit control subclassed procedure will automatically call
3956      * EndEditLabelNow.
3957      */
3958     if (infoPtr->hwndEdit)
3959     {
3960         SetFocus(hwnd);
3961         return 0;
3962     }
3963
3964     ht.pt.x = (short)LOWORD(lParam);
3965     ht.pt.y = (short)HIWORD(lParam);
3966
3967     TREEVIEW_HitTest(infoPtr, &ht);
3968     TRACE("item %d\n", TREEVIEW_GetItemIndex(infoPtr, ht.hItem));
3969
3970     /* update focusedItem and redraw both items */
3971     if(ht.hItem && (ht.flags & TVHT_ONITEM))
3972     {
3973         infoPtr->focusedItem = ht.hItem;
3974         InvalidateRect(hwnd, &(((HTREEITEM)(ht.hItem))->rect), TRUE);
3975
3976         if(infoPtr->selectedItem)
3977             InvalidateRect(hwnd, &(infoPtr->selectedItem->rect), TRUE);
3978     }
3979
3980     bTrack = (ht.flags & TVHT_ONITEM)
3981         && !(infoPtr->dwStyle & TVS_DISABLEDRAGDROP);
3982
3983     /*
3984      * If the style allows editing and the node is already selected
3985      * and the click occurred on the item label...
3986      */
3987     bDoLabelEdit = (infoPtr->dwStyle & TVS_EDITLABELS) &&
3988         (ht.flags & TVHT_ONITEMLABEL) && (infoPtr->selectedItem == ht.hItem);
3989
3990     /* Send NM_CLICK right away */
3991     if (!bTrack)
3992         if (TREEVIEW_SendSimpleNotify(infoPtr, NM_CLICK))
3993             goto setfocus;
3994
3995     if (ht.flags & TVHT_ONITEMBUTTON)
3996     {
3997         TREEVIEW_Toggle(infoPtr, ht.hItem, TRUE);
3998         goto setfocus;
3999     }
4000     else if (bTrack)
4001     {   /* if TREEVIEW_TrackMouse == 1 dragging occurred and the cursor left the dragged item's rectangle */
4002         if (TREEVIEW_TrackMouse(infoPtr, ht.pt))
4003         {
4004             TREEVIEW_SendTreeviewDnDNotify(infoPtr, TVN_BEGINDRAGW, ht.hItem, ht.pt);
4005             infoPtr->dropItem = ht.hItem;
4006
4007             /* clean up focusedItem as we dragged and won't select this item */
4008             if(infoPtr->focusedItem)
4009             {
4010                 /* refresh the item that was focused */
4011                 tempItem = infoPtr->focusedItem;
4012                 infoPtr->focusedItem = 0;
4013                 InvalidateRect(infoPtr->hwnd, &tempItem->rect, TRUE);
4014
4015                 /* refresh the selected item to return the filled background */
4016                 InvalidateRect(infoPtr->hwnd, &(infoPtr->selectedItem->rect), TRUE);
4017             }
4018
4019             return 0;
4020         }
4021     }
4022
4023     if (bTrack && TREEVIEW_SendSimpleNotify(infoPtr, NM_CLICK))
4024         goto setfocus;
4025
4026     if (bDoLabelEdit)
4027     {
4028         if (infoPtr->Timer & TV_EDIT_TIMER_SET)
4029             KillTimer(hwnd, TV_EDIT_TIMER);
4030
4031         SetTimer(hwnd, TV_EDIT_TIMER, GetDoubleClickTime(), 0);
4032         infoPtr->Timer |= TV_EDIT_TIMER_SET;
4033     }
4034     else if (ht.flags & (TVHT_ONITEMICON|TVHT_ONITEMLABEL)) /* select the item if the hit was inside of the icon or text */
4035     {
4036         /*
4037          * if we are TVS_SINGLEEXPAND then we want this single click to
4038          * do a bunch of things.
4039          */
4040         if((infoPtr->dwStyle & TVS_SINGLEEXPAND) &&
4041           (infoPtr->hwndEdit == 0))
4042         {
4043             TREEVIEW_ITEM *SelItem;
4044
4045             /*
4046              * Send the notification
4047              */
4048             TREEVIEW_SendTreeviewNotify(infoPtr, TVN_SINGLEEXPAND, TVC_UNKNOWN, TVIF_HANDLE | TVIF_PARAM, ht.hItem, 0);
4049
4050             /*
4051              * Close the previous selection all the way to the root
4052              * as long as the new selection is not a child
4053              */
4054             if((infoPtr->selectedItem)
4055                 && (infoPtr->selectedItem != ht.hItem))
4056             {
4057                 BOOL closeit = TRUE;
4058                 SelItem = ht.hItem;
4059
4060                 /* determine if the hitItem is a child of the currently selected item */
4061                 while(closeit && SelItem && TREEVIEW_ValidItem(infoPtr, SelItem) && (SelItem != infoPtr->root))
4062                 {
4063                     closeit = (SelItem != infoPtr->selectedItem);
4064                     SelItem = SelItem->parent;
4065                 }
4066
4067                 if(closeit)
4068                 {
4069                     if(TREEVIEW_ValidItem(infoPtr, infoPtr->selectedItem))
4070                         SelItem = infoPtr->selectedItem;
4071
4072                     while(SelItem && (SelItem != ht.hItem) && TREEVIEW_ValidItem(infoPtr, SelItem) && (SelItem != infoPtr->root))
4073                     {
4074                         TREEVIEW_Collapse(infoPtr, SelItem, FALSE, FALSE);
4075                         SelItem = SelItem->parent;
4076                     }
4077                 }
4078             }
4079
4080             /*
4081              * Expand the current item
4082              */
4083             TREEVIEW_Expand(infoPtr, ht.hItem, TVE_TOGGLE, FALSE);
4084         }
4085
4086         /* Select the current item */
4087         TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, ht.hItem, TVC_BYMOUSE);
4088     }
4089     else if (ht.flags & TVHT_ONITEMSTATEICON)
4090     {
4091         /* TVS_CHECKBOXES requires us to toggle the current state */
4092         if (infoPtr->dwStyle & TVS_CHECKBOXES)
4093             TREEVIEW_ToggleItemState(infoPtr, ht.hItem);
4094     }
4095
4096   setfocus:
4097     SetFocus(hwnd);
4098     return 0;
4099 }
4100
4101
4102 static LRESULT
4103 TREEVIEW_RButtonDown(TREEVIEW_INFO *infoPtr, LPARAM lParam)
4104 {
4105     TVHITTESTINFO ht;
4106
4107     if (infoPtr->hwndEdit)
4108     {
4109         SetFocus(infoPtr->hwnd);
4110         return 0;
4111     }
4112
4113     ht.pt.x = (short)LOWORD(lParam);
4114     ht.pt.y = (short)HIWORD(lParam);
4115
4116     TREEVIEW_HitTest(infoPtr, &ht);
4117
4118     if (TREEVIEW_TrackMouse(infoPtr, ht.pt))
4119     {
4120         if (ht.hItem)
4121         {
4122             TREEVIEW_SendTreeviewDnDNotify(infoPtr, TVN_BEGINRDRAGW, ht.hItem, ht.pt);
4123             infoPtr->dropItem = ht.hItem;
4124         }
4125     }
4126     else
4127     {
4128         SetFocus(infoPtr->hwnd);
4129         TREEVIEW_SendSimpleNotify(infoPtr, NM_RCLICK);
4130     }
4131
4132     return 0;
4133 }
4134
4135 static LRESULT
4136 TREEVIEW_RButtonUp(TREEVIEW_INFO *infoPtr, LPPOINT pPt)
4137 {
4138     return 0;
4139 }
4140
4141
4142 static LRESULT
4143 TREEVIEW_CreateDragImage(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
4144 {
4145     TREEVIEW_ITEM *dragItem = (HTREEITEM)lParam;
4146     INT cx, cy;
4147     HDC hdc, htopdc;
4148     HWND hwtop;
4149     HBITMAP hbmp, hOldbmp;
4150     SIZE size;
4151     RECT rc;
4152     HFONT hOldFont;
4153
4154     TRACE("\n");
4155
4156     if (!(infoPtr->himlNormal))
4157         return 0;
4158
4159     if (!dragItem || !TREEVIEW_ValidItem(infoPtr, dragItem))
4160         return 0;
4161
4162     TREEVIEW_UpdateDispInfo(infoPtr, dragItem, TVIF_TEXT);
4163
4164     hwtop = GetDesktopWindow();
4165     htopdc = GetDC(hwtop);
4166     hdc = CreateCompatibleDC(htopdc);
4167
4168     hOldFont = SelectObject(hdc, infoPtr->hFont);
4169     GetTextExtentPoint32W(hdc, dragItem->pszText, strlenW(dragItem->pszText),
4170                           &size);
4171     TRACE("%ld %ld %s %d\n", size.cx, size.cy, debugstr_w(dragItem->pszText),
4172           strlenW(dragItem->pszText));
4173     hbmp = CreateCompatibleBitmap(htopdc, size.cx, size.cy);
4174     hOldbmp = SelectObject(hdc, hbmp);
4175
4176     ImageList_GetIconSize(infoPtr->himlNormal, &cx, &cy);
4177     size.cx += cx;
4178     if (cy > size.cy)
4179         size.cy = cy;
4180
4181     infoPtr->dragList = ImageList_Create(size.cx, size.cy, ILC_COLOR, 10, 10);
4182     ImageList_Draw(infoPtr->himlNormal, dragItem->iImage, hdc, 0, 0,
4183                    ILD_NORMAL);
4184
4185 /*
4186  ImageList_GetImageInfo (infoPtr->himlNormal, dragItem->hItem, &iminfo);
4187  ImageList_AddMasked (infoPtr->dragList, iminfo.hbmImage, CLR_DEFAULT);
4188 */
4189
4190 /* draw item text */
4191
4192     SetRect(&rc, cx, 0, size.cx, size.cy);
4193     DrawTextW(hdc, dragItem->pszText, strlenW(dragItem->pszText), &rc,
4194               DT_LEFT);
4195     SelectObject(hdc, hOldFont);
4196     SelectObject(hdc, hOldbmp);
4197
4198     ImageList_Add(infoPtr->dragList, hbmp, 0);
4199
4200     DeleteDC(hdc);
4201     DeleteObject(hbmp);
4202     ReleaseDC(hwtop, htopdc);
4203
4204     return (LRESULT)infoPtr->dragList;
4205 }
4206
4207 /* Selection ************************************************************/
4208
4209 static LRESULT
4210 TREEVIEW_DoSelectItem(TREEVIEW_INFO *infoPtr, INT action, HTREEITEM newSelect,
4211                       INT cause)
4212 {
4213     TREEVIEW_ITEM *prevSelect;
4214     RECT rcFocused;
4215
4216     assert(newSelect == NULL || TREEVIEW_ValidItem(infoPtr, newSelect));
4217
4218     TRACE("Entering item %p (%s), flag %x, cause %x, state %d\n",
4219           newSelect, TREEVIEW_ItemName(newSelect), action, cause,
4220           newSelect ? newSelect->state : 0);
4221
4222     /* reset and redraw focusedItem if focusedItem was set so we don't */
4223     /* have to worry about the previously focused item when we set a new one */
4224     if(infoPtr->focusedItem)
4225     {
4226         rcFocused = (infoPtr->focusedItem)->rect;
4227         infoPtr->focusedItem = 0;
4228         InvalidateRect(infoPtr->hwnd, &rcFocused, TRUE);
4229     }
4230
4231     switch (action)
4232     {
4233     case TVGN_CARET:
4234         prevSelect = infoPtr->selectedItem;
4235
4236         if (prevSelect == newSelect) {
4237             TREEVIEW_EnsureVisible(infoPtr, infoPtr->selectedItem, FALSE);
4238             break;
4239         }
4240
4241         if (TREEVIEW_SendTreeviewNotify(infoPtr,
4242                                         TVN_SELCHANGINGW,
4243                                         cause,
4244                                         TVIF_HANDLE | TVIF_STATE | TVIF_PARAM,
4245                                         prevSelect,
4246                                         newSelect))
4247             return FALSE;
4248
4249         if (prevSelect)
4250             prevSelect->state &= ~TVIS_SELECTED;
4251         if (newSelect)
4252             newSelect->state |= TVIS_SELECTED;
4253
4254         infoPtr->selectedItem = newSelect;
4255
4256         TREEVIEW_EnsureVisible(infoPtr, infoPtr->selectedItem, FALSE);
4257
4258         if (prevSelect)
4259             TREEVIEW_Invalidate(infoPtr, prevSelect);
4260         if (newSelect)
4261             TREEVIEW_Invalidate(infoPtr, newSelect);
4262
4263         TREEVIEW_SendTreeviewNotify(infoPtr,
4264                                     TVN_SELCHANGEDW,
4265                                     cause,
4266                                     TVIF_HANDLE | TVIF_STATE | TVIF_PARAM,
4267                                     prevSelect,
4268                                     newSelect);
4269         break;
4270
4271     case TVGN_DROPHILITE:
4272         prevSelect = infoPtr->dropItem;
4273
4274         if (prevSelect)
4275             prevSelect->state &= ~TVIS_DROPHILITED;
4276
4277         infoPtr->dropItem = newSelect;
4278
4279         if (newSelect)
4280             newSelect->state |= TVIS_DROPHILITED;
4281
4282         TREEVIEW_Invalidate(infoPtr, prevSelect);
4283         TREEVIEW_Invalidate(infoPtr, newSelect);
4284         break;
4285
4286     case TVGN_FIRSTVISIBLE:
4287         if (newSelect != NULL)
4288         {
4289             TREEVIEW_EnsureVisible(infoPtr, newSelect, FALSE);
4290             TREEVIEW_SetFirstVisible(infoPtr, newSelect, TRUE);
4291             TREEVIEW_Invalidate(infoPtr, NULL);
4292         }
4293         break;
4294     }
4295
4296     TRACE("Leaving state %d\n", newSelect ? newSelect->state : 0);
4297     return TRUE;
4298 }
4299
4300 /* FIXME: handle NM_KILLFOCUS etc */
4301 static LRESULT
4302 TREEVIEW_SelectItem(TREEVIEW_INFO *infoPtr, INT wParam, HTREEITEM item)
4303 {
4304     if (item != NULL && !TREEVIEW_ValidItem(infoPtr, item))
4305         return FALSE;
4306
4307     TRACE("%p (%s) %d\n", item, TREEVIEW_ItemName(item), wParam);
4308
4309     if (!TREEVIEW_DoSelectItem(infoPtr, wParam, item, TVC_UNKNOWN))
4310         return FALSE;
4311
4312     return TRUE;
4313 }
4314
4315 /*************************************************************************
4316  *              TREEVIEW_ProcessLetterKeys
4317  *
4318  *  Processes keyboard messages generated by pressing the letter keys
4319  *  on the keyboard.
4320  *  What this does is perform a case insensitive search from the
4321  *  current position with the following quirks:
4322  *  - If two chars or more are pressed in quick succession we search
4323  *    for the corresponding string (e.g. 'abc').
4324  *  - If there is a delay we wipe away the current search string and
4325  *    restart with just that char.
4326  *  - If the user keeps pressing the same character, whether slowly or
4327  *    fast, so that the search string is entirely composed of this
4328  *    character ('aaaaa' for instance), then we search for first item
4329  *    that starting with that character.
4330  *  - If the user types the above character in quick succession, then
4331  *    we must also search for the corresponding string ('aaaaa'), and
4332  *    go to that string if there is a match.
4333  *
4334  * RETURNS
4335  *
4336  *  Zero.
4337  *
4338  * BUGS
4339  *
4340  *  - The current implementation has a list of characters it will
4341  *    accept and it ignores averything else. In particular it will
4342  *    ignore accentuated characters which seems to match what
4343  *    Windows does. But I'm not sure it makes sense to follow
4344  *    Windows there.
4345  *  - We don't sound a beep when the search fails.
4346  *  - The search should start from the focused item, not from the selected
4347  *    item. One reason for this is to allow for multiple selections in trees.
4348  *    But currently infoPtr->focusedItem does not seem very usable.
4349  *
4350  * SEE ALSO
4351  *
4352  *  TREEVIEW_ProcessLetterKeys
4353  */
4354 static INT TREEVIEW_ProcessLetterKeys(
4355     HWND hwnd, /* handle to the window */
4356     WPARAM charCode, /* the character code, the actual character */
4357     LPARAM keyData /* key data */
4358     )
4359 {
4360     TREEVIEW_INFO *infoPtr;
4361     HTREEITEM nItem;
4362     HTREEITEM endidx,idx;
4363     TVITEMEXW item;
4364     WCHAR buffer[MAX_PATH];
4365     DWORD timestamp,elapsed;
4366
4367     /* simple parameter checking */
4368     if (!hwnd || !charCode || !keyData)
4369         return 0;
4370
4371     infoPtr=(TREEVIEW_INFO*)GetWindowLongPtrW(hwnd, 0);
4372     if (!infoPtr)
4373         return 0;
4374
4375     /* only allow the valid WM_CHARs through */
4376     if (!isalnum(charCode) &&
4377         charCode != '.' && charCode != '`' && charCode != '!' &&
4378         charCode != '@' && charCode != '#' && charCode != '$' &&
4379         charCode != '%' && charCode != '^' && charCode != '&' &&
4380         charCode != '*' && charCode != '(' && charCode != ')' &&
4381         charCode != '-' && charCode != '_' && charCode != '+' &&
4382         charCode != '=' && charCode != '\\'&& charCode != ']' &&
4383         charCode != '}' && charCode != '[' && charCode != '{' &&
4384         charCode != '/' && charCode != '?' && charCode != '>' &&
4385         charCode != '<' && charCode != ',' && charCode != '~')
4386         return 0;
4387
4388     /* compute how much time elapsed since last keypress */
4389     timestamp = GetTickCount();
4390     if (timestamp > infoPtr->lastKeyPressTimestamp) {
4391         elapsed=timestamp-infoPtr->lastKeyPressTimestamp;
4392     } else {
4393         elapsed=infoPtr->lastKeyPressTimestamp-timestamp;
4394     }
4395
4396     /* update the search parameters */
4397     infoPtr->lastKeyPressTimestamp=timestamp;
4398     if (elapsed < KEY_DELAY) {
4399         if (infoPtr->nSearchParamLength < sizeof(infoPtr->szSearchParam) / sizeof(WCHAR)) {
4400             infoPtr->szSearchParam[infoPtr->nSearchParamLength++]=charCode;
4401         }
4402         if (infoPtr->charCode != charCode) {
4403             infoPtr->charCode=charCode=0;
4404         }
4405     } else {
4406         infoPtr->charCode=charCode;
4407         infoPtr->szSearchParam[0]=charCode;
4408         infoPtr->nSearchParamLength=1;
4409         /* Redundant with the 1 char string */
4410         charCode=0;
4411     }
4412
4413     /* and search from the current position */
4414     nItem=NULL;
4415     if (infoPtr->selectedItem != NULL) {
4416         endidx=infoPtr->selectedItem;
4417         /* if looking for single character match,
4418          * then we must always move forward
4419          */
4420         if (infoPtr->nSearchParamLength == 1)
4421             idx=TREEVIEW_GetNextListItem(infoPtr,endidx);
4422         else
4423             idx=endidx;
4424     } else {
4425         endidx=NULL;
4426         idx=infoPtr->root->firstChild;
4427     }
4428     do {
4429         /* At the end point, sort out wrapping */
4430         if (idx == NULL) {
4431
4432             /* If endidx is null, stop at the last item (ie top to bottom) */
4433             if (endidx == NULL)
4434                 break;
4435
4436             /* Otherwise, start again at the very beginning */
4437             idx=infoPtr->root->firstChild;
4438
4439             /* But if we are stopping on the first child, end now! */
4440             if (idx == endidx) break;
4441         }
4442
4443         /* get item */
4444         ZeroMemory(&item, sizeof(item));
4445         item.mask = TVIF_TEXT;
4446         item.hItem = idx;
4447         item.pszText = buffer;
4448         item.cchTextMax = sizeof(buffer);
4449         TREEVIEW_GetItemT( infoPtr, &item, TRUE );
4450
4451         /* check for a match */
4452         if (strncmpiW(item.pszText,infoPtr->szSearchParam,infoPtr->nSearchParamLength) == 0) {
4453             nItem=idx;
4454             break;
4455         } else if ( (charCode != 0) && (nItem == NULL) &&
4456                     (nItem != infoPtr->selectedItem) &&
4457                     (strncmpiW(item.pszText,infoPtr->szSearchParam,1) == 0) ) {
4458             /* This would work but we must keep looking for a longer match */
4459             nItem=idx;
4460         }
4461         idx=TREEVIEW_GetNextListItem(infoPtr,idx);
4462     } while (idx != endidx);
4463
4464     if (nItem != NULL) {
4465         if (TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, nItem, TVC_BYKEYBOARD)) {
4466             TREEVIEW_EnsureVisible(infoPtr, nItem, FALSE);
4467         }
4468     }
4469
4470     return 0;
4471 }
4472
4473 /* Scrolling ************************************************************/
4474
4475 static LRESULT
4476 TREEVIEW_EnsureVisible(TREEVIEW_INFO *infoPtr, HTREEITEM item, BOOL bHScroll)
4477 {
4478     int viscount;
4479     BOOL hasFirstVisible = infoPtr->firstVisible != NULL;
4480     HTREEITEM newFirstVisible = NULL;
4481     int visible_pos = -1;
4482
4483     if (!TREEVIEW_ValidItem(infoPtr, item))
4484         return FALSE;
4485
4486     if (!ISVISIBLE(item))
4487     {
4488         /* Expand parents as necessary. */
4489         HTREEITEM parent;
4490
4491         /* see if we are trying to ensure that root is vislble */
4492         if((item != infoPtr->root) && TREEVIEW_ValidItem(infoPtr, item))
4493           parent = item->parent;
4494         else
4495           parent = item; /* this item is the topmost item */
4496
4497         while (parent != infoPtr->root)
4498         {
4499             if (!(parent->state & TVIS_EXPANDED))
4500                 TREEVIEW_Expand(infoPtr, parent, FALSE, FALSE);
4501
4502             parent = parent->parent;
4503         }
4504     }
4505
4506     viscount = TREEVIEW_GetVisibleCount(infoPtr);
4507
4508     TRACE("%p (%s) %ld - %ld viscount(%d)\n", item, TREEVIEW_ItemName(item), item->visibleOrder,
4509         hasFirstVisible ? infoPtr->firstVisible->visibleOrder : -1, viscount);
4510
4511     if (hasFirstVisible)
4512         visible_pos = item->visibleOrder - infoPtr->firstVisible->visibleOrder;
4513
4514     if (visible_pos < 0)
4515     {
4516         /* item is before the start of the list: put it at the top. */
4517         newFirstVisible = item;
4518     }
4519     else if (visible_pos >= viscount
4520              /* Sometimes, before we are displayed, GVC is 0, causing us to
4521               * spuriously scroll up. */
4522              && visible_pos > 0 && !(infoPtr->dwStyle & TVS_NOSCROLL) )
4523     {
4524         /* item is past the end of the list. */
4525         int scroll = visible_pos - viscount;
4526
4527         newFirstVisible = TREEVIEW_GetListItem(infoPtr, infoPtr->firstVisible,
4528                                                scroll + 1);
4529     }
4530
4531     if (bHScroll)
4532     {
4533         /* Scroll window so item's text is visible as much as possible */
4534         /* Calculation of amount of extra space is taken from EditLabel code */
4535         INT pos, x;
4536         TEXTMETRICW textMetric;
4537         HDC hdc = GetWindowDC(infoPtr->hwnd);
4538
4539         x = item->textWidth;
4540
4541         GetTextMetricsW(hdc, &textMetric);
4542         ReleaseDC(infoPtr->hwnd, hdc);
4543
4544         x += (textMetric.tmMaxCharWidth * 2);
4545         x = max(x, textMetric.tmMaxCharWidth * 3);
4546
4547         if (item->textOffset < 0)
4548            pos = item->textOffset;
4549         else if (item->textOffset + x > infoPtr->clientWidth)
4550         {
4551            if (x > infoPtr->clientWidth)
4552               pos = item->textOffset;
4553            else
4554               pos = item->textOffset + x - infoPtr->clientWidth;
4555         }
4556         else
4557            pos = 0;
4558
4559         TREEVIEW_HScroll(infoPtr, MAKEWPARAM(SB_THUMBPOSITION, infoPtr->scrollX + pos));
4560     }
4561
4562     if (newFirstVisible != NULL && newFirstVisible != infoPtr->firstVisible)
4563     {
4564         TREEVIEW_SetFirstVisible(infoPtr, newFirstVisible, TRUE);
4565
4566         return TRUE;
4567     }
4568
4569     return FALSE;
4570 }
4571
4572 static VOID
4573 TREEVIEW_SetFirstVisible(TREEVIEW_INFO *infoPtr,
4574                          TREEVIEW_ITEM *newFirstVisible,
4575                          BOOL bUpdateScrollPos)
4576 {
4577     int gap_size;
4578
4579     TRACE("%p: %s\n", newFirstVisible, TREEVIEW_ItemName(newFirstVisible));
4580
4581     if (newFirstVisible != NULL)
4582     {
4583         /* Prevent an empty gap from appearing at the bottom... */
4584         gap_size = TREEVIEW_GetVisibleCount(infoPtr)
4585             - infoPtr->maxVisibleOrder + newFirstVisible->visibleOrder;
4586
4587         if (gap_size > 0)
4588         {
4589             newFirstVisible = TREEVIEW_GetListItem(infoPtr, newFirstVisible,
4590                                                    -gap_size);
4591
4592             /* ... unless we just don't have enough items. */
4593             if (newFirstVisible == NULL)
4594                 newFirstVisible = infoPtr->root->firstChild;
4595         }
4596     }
4597
4598     if (infoPtr->firstVisible != newFirstVisible)
4599     {
4600         if (infoPtr->firstVisible == NULL || newFirstVisible == NULL)
4601         {
4602             infoPtr->firstVisible = newFirstVisible;
4603             TREEVIEW_Invalidate(infoPtr, NULL);
4604         }
4605         else
4606         {
4607             TREEVIEW_ITEM *item;
4608             int scroll = infoPtr->uItemHeight *
4609                          (infoPtr->firstVisible->visibleOrder
4610                           - newFirstVisible->visibleOrder);
4611
4612             infoPtr->firstVisible = newFirstVisible;
4613
4614             for (item = infoPtr->root->firstChild; item != NULL;
4615                  item = TREEVIEW_GetNextListItem(infoPtr, item))
4616             {
4617                item->rect.top += scroll;
4618                item->rect.bottom += scroll;
4619             }
4620
4621             if (bUpdateScrollPos)
4622                 SetScrollPos(infoPtr->hwnd, SB_VERT,
4623                               newFirstVisible->visibleOrder, TRUE);
4624
4625             ScrollWindowEx(infoPtr->hwnd, 0, scroll, NULL, NULL, NULL, NULL, SW_ERASE | SW_INVALIDATE);
4626         }
4627     }
4628 }
4629
4630 /************************************************************************
4631  * VScroll is always in units of visible items. i.e. we always have a
4632  * visible item aligned to the top of the control. (Unless we have no
4633  * items at all.)
4634  */
4635 static LRESULT
4636 TREEVIEW_VScroll(TREEVIEW_INFO *infoPtr, WPARAM wParam)
4637 {
4638     TREEVIEW_ITEM *oldFirstVisible = infoPtr->firstVisible;
4639     TREEVIEW_ITEM *newFirstVisible = NULL;
4640
4641     int nScrollCode = LOWORD(wParam);
4642
4643     TRACE("wp %x\n", wParam);
4644
4645     if (!(infoPtr->uInternalStatus & TV_VSCROLL))
4646         return 0;
4647
4648     if (infoPtr->hwndEdit)
4649         SetFocus(infoPtr->hwnd);
4650
4651     if (!oldFirstVisible)
4652     {
4653         assert(infoPtr->root->firstChild == NULL);
4654         return 0;
4655     }
4656
4657     switch (nScrollCode)
4658     {
4659     case SB_TOP:
4660         newFirstVisible = infoPtr->root->firstChild;
4661         break;
4662
4663     case SB_BOTTOM:
4664         newFirstVisible = TREEVIEW_GetLastListItem(infoPtr, infoPtr->root);
4665         break;
4666
4667     case SB_LINEUP:
4668         newFirstVisible = TREEVIEW_GetPrevListItem(infoPtr, oldFirstVisible);
4669         break;
4670
4671     case SB_LINEDOWN:
4672         newFirstVisible = TREEVIEW_GetNextListItem(infoPtr, oldFirstVisible);
4673         break;
4674
4675     case SB_PAGEUP:
4676         newFirstVisible = TREEVIEW_GetListItem(infoPtr, oldFirstVisible,
4677                                                -max(1, TREEVIEW_GetVisibleCount(infoPtr)));
4678         break;
4679
4680     case SB_PAGEDOWN:
4681         newFirstVisible = TREEVIEW_GetListItem(infoPtr, oldFirstVisible,
4682                                                max(1, TREEVIEW_GetVisibleCount(infoPtr)));
4683         break;
4684
4685     case SB_THUMBTRACK:
4686     case SB_THUMBPOSITION:
4687         newFirstVisible = TREEVIEW_GetListItem(infoPtr,
4688                                                infoPtr->root->firstChild,
4689                                                (LONG)(SHORT)HIWORD(wParam));
4690         break;
4691
4692     case SB_ENDSCROLL:
4693         return 0;
4694     }
4695
4696     if (newFirstVisible != NULL)
4697     {
4698         if (newFirstVisible != oldFirstVisible)
4699             TREEVIEW_SetFirstVisible(infoPtr, newFirstVisible,
4700                                   nScrollCode != SB_THUMBTRACK);
4701         else if (nScrollCode == SB_THUMBPOSITION)
4702             SetScrollPos(infoPtr->hwnd, SB_VERT,
4703                          newFirstVisible->visibleOrder, TRUE);
4704     }
4705
4706     return 0;
4707 }
4708
4709 static LRESULT
4710 TREEVIEW_HScroll(TREEVIEW_INFO *infoPtr, WPARAM wParam)
4711 {
4712     int maxWidth;
4713     int scrollX = infoPtr->scrollX;
4714     int nScrollCode = LOWORD(wParam);
4715
4716     TRACE("wp %x\n", wParam);
4717
4718     if (!(infoPtr->uInternalStatus & TV_HSCROLL))
4719         return FALSE;
4720
4721     if (infoPtr->hwndEdit)
4722         SetFocus(infoPtr->hwnd);
4723
4724     maxWidth = infoPtr->treeWidth - infoPtr->clientWidth;
4725     /* shall never occur */
4726     if (maxWidth <= 0)
4727     {
4728        scrollX = 0;
4729        goto scroll;
4730     }
4731
4732     switch (nScrollCode)
4733     {
4734     case SB_LINELEFT:
4735         scrollX -= infoPtr->uItemHeight;
4736         break;
4737     case SB_LINERIGHT:
4738         scrollX += infoPtr->uItemHeight;
4739         break;
4740     case SB_PAGELEFT:
4741         scrollX -= infoPtr->clientWidth;
4742         break;
4743     case SB_PAGERIGHT:
4744         scrollX += infoPtr->clientWidth;
4745         break;
4746
4747     case SB_THUMBTRACK:
4748     case SB_THUMBPOSITION:
4749         scrollX = (int)(SHORT)HIWORD(wParam);
4750         break;
4751
4752     case SB_ENDSCROLL:
4753        return 0;
4754     }
4755
4756     if (scrollX > maxWidth)
4757         scrollX = maxWidth;
4758     else if (scrollX < 0)
4759         scrollX = 0;
4760
4761 scroll:
4762     if (scrollX != infoPtr->scrollX)
4763     {
4764         TREEVIEW_ITEM *item;
4765         LONG scroll_pixels = infoPtr->scrollX - scrollX;
4766
4767         for (item = infoPtr->root->firstChild; item != NULL;
4768              item = TREEVIEW_GetNextListItem(infoPtr, item))
4769         {
4770            item->linesOffset += scroll_pixels;
4771            item->stateOffset += scroll_pixels;
4772            item->imageOffset += scroll_pixels;
4773            item->textOffset  += scroll_pixels;
4774         }
4775
4776         ScrollWindow(infoPtr->hwnd, scroll_pixels, 0, NULL, NULL);
4777         infoPtr->scrollX = scrollX;
4778         UpdateWindow(infoPtr->hwnd);
4779     }
4780
4781     if (nScrollCode != SB_THUMBTRACK)
4782        SetScrollPos(infoPtr->hwnd, SB_HORZ, scrollX, TRUE);
4783
4784     return 0;
4785 }
4786
4787 static LRESULT
4788 TREEVIEW_MouseWheel(TREEVIEW_INFO *infoPtr, WPARAM wParam)
4789 {
4790     short gcWheelDelta;
4791     UINT pulScrollLines = 3;
4792
4793     if (infoPtr->firstVisible == NULL)
4794         return TRUE;
4795
4796     SystemParametersInfoW(SPI_GETWHEELSCROLLLINES, 0, &pulScrollLines, 0);
4797
4798     gcWheelDelta = -(short)HIWORD(wParam);
4799     pulScrollLines *= (gcWheelDelta / WHEEL_DELTA);
4800
4801     if (abs(gcWheelDelta) >= WHEEL_DELTA && pulScrollLines)
4802     {
4803         int newDy = infoPtr->firstVisible->visibleOrder + pulScrollLines;
4804         int maxDy = infoPtr->maxVisibleOrder;
4805
4806         if (newDy > maxDy)
4807             newDy = maxDy;
4808
4809         if (newDy < 0)
4810             newDy = 0;
4811
4812         TREEVIEW_VScroll(infoPtr, MAKEWPARAM(SB_THUMBPOSITION, newDy));
4813     }
4814     return TRUE;
4815 }
4816
4817 /* Create/Destroy *******************************************************/
4818
4819 static LRESULT
4820 TREEVIEW_Create(HWND hwnd, const CREATESTRUCTW *lpcs)
4821 {
4822     static const WCHAR szDisplayW[] = { 'D','I','S','P','L','A','Y','\0' };
4823     RECT rcClient;
4824     TREEVIEW_INFO *infoPtr;
4825     LOGFONTW lf;
4826
4827     TRACE("wnd %p, style %lx\n", hwnd, GetWindowLongW(hwnd, GWL_STYLE));
4828
4829     infoPtr = (TREEVIEW_INFO *)Alloc(sizeof(TREEVIEW_INFO));
4830
4831     if (infoPtr == NULL)
4832     {
4833         ERR("could not allocate info memory!\n");
4834         return 0;
4835     }
4836
4837     SetWindowLongPtrW(hwnd, 0, (DWORD_PTR)infoPtr);
4838
4839     infoPtr->hwnd = hwnd;
4840     infoPtr->dwStyle = GetWindowLongW(hwnd, GWL_STYLE);
4841     infoPtr->Timer = 0;
4842     infoPtr->uNumItems = 0;
4843     infoPtr->cdmode = 0;
4844     infoPtr->uScrollTime = 300; /* milliseconds */
4845     infoPtr->bRedraw = TRUE;
4846
4847     GetClientRect(hwnd, &rcClient);
4848
4849     /* No scroll bars yet. */
4850     infoPtr->clientWidth = rcClient.right;
4851     infoPtr->clientHeight = rcClient.bottom;
4852     infoPtr->uInternalStatus = 0;
4853
4854     infoPtr->treeWidth = 0;
4855     infoPtr->treeHeight = 0;
4856
4857     infoPtr->uIndent = MINIMUM_INDENT;
4858     infoPtr->selectedItem = 0;
4859     infoPtr->focusedItem = 0;
4860     infoPtr->hotItem = 0;
4861     infoPtr->firstVisible = 0;
4862     infoPtr->maxVisibleOrder = 0;
4863     infoPtr->dropItem = 0;
4864     infoPtr->insertMarkItem = 0;
4865     infoPtr->insertBeforeorAfter = 0;
4866     /* dragList */
4867
4868     infoPtr->scrollX = 0;
4869
4870     infoPtr->clrBk = GetSysColor(COLOR_WINDOW);
4871     infoPtr->clrText = -1;      /* use system color */
4872     infoPtr->clrLine = RGB(128, 128, 128);
4873     infoPtr->clrInsertMark = GetSysColor(COLOR_BTNTEXT);
4874
4875     /* hwndToolTip */
4876
4877     infoPtr->hwndEdit = 0;
4878     infoPtr->wpEditOrig = NULL;
4879     infoPtr->bIgnoreEditKillFocus = FALSE;
4880     infoPtr->bLabelChanged = FALSE;
4881
4882     infoPtr->himlNormal = NULL;
4883     infoPtr->himlState = NULL;
4884     infoPtr->normalImageWidth = 0;
4885     infoPtr->normalImageHeight = 0;
4886     infoPtr->stateImageWidth = 0;
4887     infoPtr->stateImageHeight = 0;
4888
4889     infoPtr->items = DPA_Create(16);
4890
4891     SystemParametersInfoW(SPI_GETICONTITLELOGFONT, sizeof(lf), &lf, 0);
4892     infoPtr->hFont = infoPtr->hDefaultFont = CreateFontIndirectW(&lf);
4893     infoPtr->hBoldFont = TREEVIEW_CreateBoldFont(infoPtr->hFont);
4894     infoPtr->hUnderlineFont = TREEVIEW_CreateUnderlineFont(infoPtr->hFont);
4895     infoPtr->hcurHand = LoadCursorW(NULL, (LPWSTR)IDC_HAND);
4896
4897     infoPtr->uItemHeight = TREEVIEW_NaturalHeight(infoPtr);
4898
4899     infoPtr->root = TREEVIEW_AllocateItem(infoPtr);
4900     infoPtr->root->state = TVIS_EXPANDED;
4901     infoPtr->root->iLevel = -1;
4902     infoPtr->root->visibleOrder = -1;
4903
4904     infoPtr->hwndNotify = lpcs->hwndParent;
4905 #if 0
4906     infoPtr->bTransparent = ( GetWindowLongW( hwnd, GWL_STYLE) & TBSTYLE_FLAT);
4907 #endif
4908
4909     infoPtr->hwndToolTip = 0;
4910
4911     infoPtr->bNtfUnicode = IsWindowUnicode (hwnd);
4912
4913     /* Determine what type of notify should be issued */
4914     /* sets infoPtr->bNtfUnicode */
4915     TREEVIEW_NotifyFormat(infoPtr, infoPtr->hwndNotify, NF_REQUERY);
4916
4917     if (!(infoPtr->dwStyle & TVS_NOTOOLTIPS))
4918         infoPtr->hwndToolTip = COMCTL32_CreateToolTip(hwnd);
4919
4920     if (infoPtr->dwStyle & TVS_CHECKBOXES)
4921     {
4922         RECT rc;
4923         HBITMAP hbm, hbmOld;
4924         HDC hdc,hdcScreen;
4925         int nIndex;
4926
4927         infoPtr->himlState =
4928             ImageList_Create(16, 16, ILC_COLOR | ILC_MASK, 3, 0);
4929
4930         hdcScreen = CreateDCW(szDisplayW, NULL, NULL, NULL);
4931
4932         /* Create a coloured bitmap compatible with the screen depth
4933            because checkboxes are not black&white */
4934         hdc = CreateCompatibleDC(hdcScreen);
4935         hbm = CreateCompatibleBitmap(hdcScreen, 48, 16);
4936         hbmOld = SelectObject(hdc, hbm);
4937
4938         rc.left  = 0;   rc.top    = 0;
4939         rc.right = 48;  rc.bottom = 16;
4940         FillRect(hdc, &rc, (HBRUSH)(COLOR_WINDOW+1));
4941
4942         rc.left  = 18;   rc.top    = 2;
4943         rc.right = 30;   rc.bottom = 14;
4944         DrawFrameControl(hdc, &rc, DFC_BUTTON,
4945                           DFCS_BUTTONCHECK|DFCS_FLAT);
4946
4947         rc.left  = 34;   rc.right  = 46;
4948         DrawFrameControl(hdc, &rc, DFC_BUTTON,
4949                           DFCS_BUTTONCHECK|DFCS_FLAT|DFCS_CHECKED);
4950
4951         SelectObject(hdc, hbmOld);
4952         nIndex = ImageList_AddMasked(infoPtr->himlState, hbm,
4953                                       GetSysColor(COLOR_WINDOW));
4954         TRACE("checkbox index %d\n", nIndex);
4955
4956         DeleteObject(hbm);
4957         DeleteDC(hdc);
4958         DeleteDC(hdcScreen);
4959
4960         infoPtr->stateImageWidth = 16;
4961         infoPtr->stateImageHeight = 16;
4962     }
4963
4964     /* Make sure actual scrollbar state is consistent with uInternalStatus */
4965     ShowScrollBar(hwnd, SB_VERT, FALSE);
4966     ShowScrollBar(hwnd, SB_HORZ, FALSE);
4967
4968     OpenThemeData (hwnd, themeClass);
4969
4970     return 0;
4971 }
4972
4973
4974 static LRESULT
4975 TREEVIEW_Destroy(TREEVIEW_INFO *infoPtr)
4976 {
4977     TRACE("\n");
4978
4979     TREEVIEW_RemoveTree(infoPtr);
4980
4981     /* tool tip is automatically destroyed: we are its owner */
4982
4983     /* Restore original wndproc */
4984     if (infoPtr->hwndEdit)
4985         SetWindowLongPtrW(infoPtr->hwndEdit, GWLP_WNDPROC,
4986                        (DWORD_PTR)infoPtr->wpEditOrig);
4987
4988     CloseThemeData (GetWindowTheme (infoPtr->hwnd));
4989
4990     /* Deassociate treeview from the window before doing anything drastic. */
4991     SetWindowLongPtrW(infoPtr->hwnd, 0, (DWORD_PTR)NULL);
4992
4993
4994     DeleteObject(infoPtr->hDefaultFont);
4995     DeleteObject(infoPtr->hBoldFont);
4996     DeleteObject(infoPtr->hUnderlineFont);
4997     Free(infoPtr);
4998
4999     return 0;
5000 }
5001
5002 /* Miscellaneous Messages ***********************************************/
5003
5004 static LRESULT
5005 TREEVIEW_ScrollKeyDown(TREEVIEW_INFO *infoPtr, WPARAM key)
5006 {
5007     static const struct
5008     {
5009         unsigned char code;
5010     }
5011     scroll[] =
5012     {
5013 #define SCROLL_ENTRY(dir, code) { ((dir) << 7) | (code) }
5014         SCROLL_ENTRY(SB_VERT, SB_PAGEUP),       /* VK_PRIOR */
5015         SCROLL_ENTRY(SB_VERT, SB_PAGEDOWN),     /* VK_NEXT */
5016         SCROLL_ENTRY(SB_VERT, SB_BOTTOM),       /* VK_END */
5017         SCROLL_ENTRY(SB_VERT, SB_TOP),          /* VK_HOME */
5018         SCROLL_ENTRY(SB_HORZ, SB_LINEUP),       /* VK_LEFT */
5019         SCROLL_ENTRY(SB_VERT, SB_LINEUP),       /* VK_UP */
5020         SCROLL_ENTRY(SB_HORZ, SB_LINEDOWN),     /* VK_RIGHT */
5021         SCROLL_ENTRY(SB_VERT, SB_LINEDOWN)      /* VK_DOWN */
5022 #undef SCROLL_ENTRY
5023     };
5024
5025     if (key >= VK_PRIOR && key <= VK_DOWN)
5026     {
5027         unsigned char code = scroll[key - VK_PRIOR].code;
5028
5029         (((code & (1 << 7)) == (SB_HORZ << 7))
5030          ? TREEVIEW_HScroll
5031          : TREEVIEW_VScroll)(infoPtr, code & 0x7F);
5032     }
5033
5034     return 0;
5035 }
5036
5037 /************************************************************************
5038  *        TREEVIEW_KeyDown
5039  *
5040  * VK_UP       Move selection to the previous non-hidden item.
5041  * VK_DOWN     Move selection to the next non-hidden item.
5042  * VK_HOME     Move selection to the first item.
5043  * VK_END      Move selection to the last item.
5044  * VK_LEFT     If expanded then collapse, otherwise move to parent.
5045  * VK_RIGHT    If collapsed then expand, otherwise move to first child.
5046  * VK_ADD      Expand.
5047  * VK_SUBTRACT Collapse.
5048  * VK_MULTIPLY Expand all.
5049  * VK_PRIOR    Move up GetVisibleCount items.
5050  * VK_NEXT     Move down GetVisibleCount items.
5051  * VK_BACK     Move to parent.
5052  * CTRL-Left,Right,Up,Down,PgUp,PgDown,Home,End: Scroll without changing selection
5053  */
5054 static LRESULT
5055 TREEVIEW_KeyDown(TREEVIEW_INFO *infoPtr, WPARAM wParam)
5056 {
5057     /* If it is non-NULL and different, it will be selected and visible. */
5058     TREEVIEW_ITEM *newSelection = NULL;
5059
5060     TREEVIEW_ITEM *prevItem = infoPtr->selectedItem;
5061
5062     TRACE("%x\n", wParam);
5063
5064     if (prevItem == NULL)
5065         return FALSE;
5066
5067     if (GetAsyncKeyState(VK_CONTROL) & 0x8000)
5068         return TREEVIEW_ScrollKeyDown(infoPtr, wParam);
5069
5070     switch (wParam)
5071     {
5072     case VK_UP:
5073         newSelection = TREEVIEW_GetPrevListItem(infoPtr, prevItem);
5074         if (!newSelection)
5075             newSelection = infoPtr->root->firstChild;
5076         break;
5077
5078     case VK_DOWN:
5079         newSelection = TREEVIEW_GetNextListItem(infoPtr, prevItem);
5080         break;
5081
5082     case VK_HOME:
5083         newSelection = infoPtr->root->firstChild;
5084         break;
5085
5086     case VK_END:
5087         newSelection = TREEVIEW_GetLastListItem(infoPtr, infoPtr->root);
5088         break;
5089
5090     case VK_LEFT:
5091         if (prevItem->state & TVIS_EXPANDED)
5092         {
5093             TREEVIEW_Collapse(infoPtr, prevItem, FALSE, TRUE);
5094         }
5095         else if (prevItem->parent != infoPtr->root)
5096         {
5097             newSelection = prevItem->parent;
5098         }
5099         break;
5100
5101     case VK_RIGHT:
5102         if (TREEVIEW_HasChildren(infoPtr, prevItem))
5103         {
5104             if (!(prevItem->state & TVIS_EXPANDED))
5105                 TREEVIEW_Expand(infoPtr, prevItem, FALSE, TRUE);
5106             else
5107             {
5108                 newSelection = prevItem->firstChild;
5109             }
5110         }
5111
5112         break;
5113
5114     case VK_MULTIPLY:
5115         TREEVIEW_ExpandAll(infoPtr, prevItem);
5116         break;
5117
5118     case VK_ADD:
5119         if (!(prevItem->state & TVIS_EXPANDED))
5120             TREEVIEW_Expand(infoPtr, prevItem, FALSE, TRUE);
5121         break;
5122
5123     case VK_SUBTRACT:
5124         if (prevItem->state & TVIS_EXPANDED)
5125             TREEVIEW_Collapse(infoPtr, prevItem, FALSE, TRUE);
5126         break;
5127
5128     case VK_PRIOR:
5129         newSelection
5130             = TREEVIEW_GetListItem(infoPtr, prevItem,
5131                                    -TREEVIEW_GetVisibleCount(infoPtr));
5132         break;
5133
5134     case VK_NEXT:
5135         newSelection
5136             = TREEVIEW_GetListItem(infoPtr, prevItem,
5137                                    TREEVIEW_GetVisibleCount(infoPtr));
5138         break;
5139
5140     case VK_BACK:
5141         newSelection = prevItem->parent;
5142         if (newSelection == infoPtr->root)
5143             newSelection = NULL;
5144         break;
5145
5146     case VK_SPACE:
5147         if (infoPtr->dwStyle & TVS_CHECKBOXES)
5148             TREEVIEW_ToggleItemState(infoPtr, prevItem);
5149         break;
5150     }
5151
5152     if (newSelection && newSelection != prevItem)
5153     {
5154         if (TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, newSelection,
5155                                   TVC_BYKEYBOARD))
5156         {
5157             TREEVIEW_EnsureVisible(infoPtr, newSelection, FALSE);
5158         }
5159     }
5160
5161     return FALSE;
5162 }
5163
5164 static LRESULT
5165 TREEVIEW_MouseLeave (TREEVIEW_INFO * infoPtr)
5166 {
5167     if (infoPtr->hotItem)
5168     {
5169         /* remove hot effect from item */
5170         InvalidateRect(infoPtr->hwnd, &infoPtr->hotItem->rect, TRUE);
5171         infoPtr->hotItem = NULL;
5172     }
5173     return 0;
5174 }
5175
5176 static LRESULT
5177 TREEVIEW_MouseMove (TREEVIEW_INFO * infoPtr, WPARAM wParam, LPARAM lParam)
5178 {
5179     POINT pt;
5180     TRACKMOUSEEVENT trackinfo;
5181     TREEVIEW_ITEM * item;
5182
5183     /* fill in the TRACKMOUSEEVENT struct */
5184     trackinfo.cbSize = sizeof(TRACKMOUSEEVENT);
5185     trackinfo.dwFlags = TME_QUERY;
5186     trackinfo.hwndTrack = infoPtr->hwnd;
5187     trackinfo.dwHoverTime = HOVER_DEFAULT;
5188
5189     /* call _TrackMouseEvent to see if we are currently tracking for this hwnd */
5190     _TrackMouseEvent(&trackinfo);
5191
5192     /* Make sure tracking is enabled so we receive a WM_MOUSELEAVE message */
5193     if(!(trackinfo.dwFlags & TME_LEAVE))
5194     {
5195         trackinfo.dwFlags = TME_LEAVE; /* notify upon leaving */
5196
5197         /* call TRACKMOUSEEVENT so we receive a WM_MOUSELEAVE message */
5198         /* and can properly deactivate the hot item */
5199         _TrackMouseEvent(&trackinfo);
5200     }
5201
5202     pt.x = (INT)LOWORD(lParam);
5203     pt.y = (INT)HIWORD(lParam);
5204
5205     item = TREEVIEW_HitTestPoint(infoPtr, pt);
5206
5207     if (item != infoPtr->hotItem)
5208     {
5209         /* redraw old hot item */
5210         if (infoPtr->hotItem)
5211             InvalidateRect(infoPtr->hwnd, &infoPtr->hotItem->rect, TRUE);
5212         infoPtr->hotItem = item;
5213         /* redraw new hot item */
5214         if (infoPtr->hotItem)
5215             InvalidateRect(infoPtr->hwnd, &infoPtr->hotItem->rect, TRUE);
5216     }
5217
5218     return 0;
5219 }
5220
5221 /* Draw themed border */
5222 static BOOL nc_paint (TREEVIEW_INFO *infoPtr, HRGN region)
5223 {
5224     HTHEME theme = GetWindowTheme (infoPtr->hwnd);
5225     HDC dc;
5226     RECT r;
5227     HRGN cliprgn;
5228     int cxEdge = GetSystemMetrics (SM_CXEDGE),
5229         cyEdge = GetSystemMetrics (SM_CYEDGE);
5230
5231     if (!theme) return FALSE;
5232
5233     GetWindowRect(infoPtr->hwnd, &r);
5234
5235     cliprgn = CreateRectRgn (r.left + cxEdge, r.top + cyEdge,
5236         r.right - cxEdge, r.bottom - cyEdge);
5237     if (region != (HRGN)1)
5238         CombineRgn (cliprgn, cliprgn, region, RGN_AND);
5239     OffsetRect(&r, -r.left, -r.top);
5240
5241     dc = GetDCEx(infoPtr->hwnd, region, DCX_WINDOW|DCX_INTERSECTRGN);
5242     OffsetRect(&r, -r.left, -r.top);
5243
5244     if (IsThemeBackgroundPartiallyTransparent (theme, 0, 0))
5245         DrawThemeParentBackground(infoPtr->hwnd, dc, &r);
5246     DrawThemeBackground (theme, dc, 0, 0, &r, 0);
5247     ReleaseDC(infoPtr->hwnd, dc);
5248
5249     /* Call default proc to get the scrollbars etc. painted */
5250     DefWindowProcW (infoPtr->hwnd, WM_NCPAINT, (WPARAM)cliprgn, 0);
5251
5252     return TRUE;
5253 }
5254
5255 static LRESULT
5256 TREEVIEW_Notify(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
5257 {
5258     LPNMHDR lpnmh = (LPNMHDR)lParam;
5259
5260     if (lpnmh->code == PGN_CALCSIZE) {
5261         LPNMPGCALCSIZE lppgc = (LPNMPGCALCSIZE)lParam;
5262
5263         if (lppgc->dwFlag == PGF_CALCWIDTH) {
5264             lppgc->iWidth = infoPtr->treeWidth;
5265             TRACE("got PGN_CALCSIZE, returning horz size = %ld, client=%ld\n",
5266                   infoPtr->treeWidth, infoPtr->clientWidth);
5267         }
5268         else {
5269             lppgc->iHeight = infoPtr->treeHeight;
5270             TRACE("got PGN_CALCSIZE, returning vert size = %ld, client=%ld\n",
5271                   infoPtr->treeHeight, infoPtr->clientHeight);
5272         }
5273         return 0;
5274     }
5275     return DefWindowProcW(infoPtr->hwnd, WM_NOTIFY, wParam, lParam);
5276 }
5277
5278 static INT TREEVIEW_NotifyFormat (TREEVIEW_INFO *infoPtr, HWND hwndFrom, UINT nCommand)
5279 {
5280     INT format;
5281
5282     TRACE("(hwndFrom=%p, nCommand=%d)\n", hwndFrom, nCommand);
5283
5284     if (nCommand != NF_REQUERY) return 0;
5285
5286     format = SendMessageW(hwndFrom, WM_NOTIFYFORMAT, (WPARAM)infoPtr->hwnd, NF_QUERY);
5287     TRACE("format=%d\n", format);
5288
5289     if (format != NFR_ANSI && format != NFR_UNICODE) return 0;
5290
5291     infoPtr->bNtfUnicode = (format == NFR_UNICODE);
5292
5293     return format;
5294 }
5295
5296 static LRESULT
5297 TREEVIEW_Size(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
5298 {
5299     if (wParam == SIZE_RESTORED)
5300     {
5301         infoPtr->clientWidth  = (short)LOWORD(lParam);
5302         infoPtr->clientHeight = (short)HIWORD(lParam);
5303
5304         TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
5305         TREEVIEW_SetFirstVisible(infoPtr, infoPtr->firstVisible, TRUE);
5306         TREEVIEW_UpdateScrollBars(infoPtr);
5307     }
5308     else
5309     {
5310         FIXME("WM_SIZE flag %x %lx not handled\n", wParam, lParam);
5311     }
5312
5313     TREEVIEW_Invalidate(infoPtr, NULL);
5314     return 0;
5315 }
5316
5317 static LRESULT
5318 TREEVIEW_StyleChanged(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
5319 {
5320     TRACE("(%x %lx)\n", wParam, lParam);
5321
5322     if (wParam == GWL_STYLE)
5323     {
5324        DWORD dwNewStyle = ((LPSTYLESTRUCT)lParam)->styleNew;
5325
5326        /* we have to take special care about tooltips */
5327        if ((infoPtr->dwStyle ^ dwNewStyle) & TVS_NOTOOLTIPS)
5328        {
5329           if (infoPtr->dwStyle & TVS_NOTOOLTIPS)
5330           {
5331               infoPtr->hwndToolTip = COMCTL32_CreateToolTip(infoPtr->hwnd);
5332               TRACE("\n");
5333           }
5334           else
5335           {
5336              DestroyWindow(infoPtr->hwndToolTip);
5337              infoPtr->hwndToolTip = 0;
5338           }
5339        }
5340
5341        infoPtr->dwStyle = dwNewStyle;
5342     }
5343
5344     TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
5345     TREEVIEW_UpdateScrollBars(infoPtr);
5346     TREEVIEW_Invalidate(infoPtr, NULL);
5347
5348     return 0;
5349 }
5350
5351 static LRESULT
5352 TREEVIEW_SetCursor(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
5353 {
5354     POINT pt;
5355     TREEVIEW_ITEM * item;
5356
5357     GetCursorPos(&pt);
5358     ScreenToClient(infoPtr->hwnd, &pt);
5359
5360     item = TREEVIEW_HitTestPoint(infoPtr, pt);
5361
5362     /* FIXME: send NM_SETCURSOR */
5363
5364     if (item && (infoPtr->dwStyle & TVS_TRACKSELECT))
5365     {
5366         SetCursor(infoPtr->hcurHand);
5367         return 0;
5368     }
5369     else
5370         return DefWindowProcW(infoPtr->hwnd, WM_SETCURSOR, wParam, lParam);
5371 }
5372
5373 static LRESULT
5374 TREEVIEW_SetFocus(TREEVIEW_INFO *infoPtr)
5375 {
5376     TRACE("\n");
5377
5378     if (!infoPtr->selectedItem)
5379     {
5380         TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, infoPtr->firstVisible,
5381                               TVC_UNKNOWN);
5382     }
5383
5384     TREEVIEW_Invalidate(infoPtr, infoPtr->selectedItem);
5385     TREEVIEW_SendSimpleNotify(infoPtr, NM_SETFOCUS);
5386     return 0;
5387 }
5388
5389 static LRESULT
5390 TREEVIEW_KillFocus(TREEVIEW_INFO *infoPtr)
5391 {
5392     TRACE("\n");
5393
5394     TREEVIEW_Invalidate(infoPtr, infoPtr->selectedItem);
5395     UpdateWindow(infoPtr->hwnd);
5396     TREEVIEW_SendSimpleNotify(infoPtr, NM_KILLFOCUS);
5397     return 0;
5398 }
5399
5400 /* update theme after a WM_THEMECHANGED message */
5401 static LRESULT theme_changed (TREEVIEW_INFO* infoPtr)
5402 {
5403     HTHEME theme = GetWindowTheme (infoPtr->hwnd);
5404     CloseThemeData (theme);
5405     OpenThemeData (infoPtr->hwnd, themeClass);
5406     return 0;
5407 }
5408
5409
5410 static LRESULT WINAPI
5411 TREEVIEW_WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
5412 {
5413     TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
5414
5415     TRACE("hwnd %p msg %04x wp=%08x lp=%08lx\n", hwnd, uMsg, wParam, lParam);
5416
5417     if (infoPtr) TREEVIEW_VerifyTree(infoPtr);
5418     else
5419     {
5420         if (uMsg == WM_CREATE)
5421             TREEVIEW_Create(hwnd, (LPCREATESTRUCTW)lParam);
5422         else
5423             goto def;
5424     }
5425
5426     switch (uMsg)
5427     {
5428     case TVM_CREATEDRAGIMAGE:
5429         return TREEVIEW_CreateDragImage(infoPtr, wParam, lParam);
5430
5431     case TVM_DELETEITEM:
5432         return TREEVIEW_DeleteItem(infoPtr, (HTREEITEM)lParam);
5433
5434     case TVM_EDITLABELA:
5435         return (LRESULT)TREEVIEW_EditLabel(infoPtr, (HTREEITEM)lParam);
5436
5437     case TVM_EDITLABELW:
5438         return (LRESULT)TREEVIEW_EditLabel(infoPtr, (HTREEITEM)lParam);
5439
5440     case TVM_ENDEDITLABELNOW:
5441         return TREEVIEW_EndEditLabelNow(infoPtr, (BOOL)wParam);
5442
5443     case TVM_ENSUREVISIBLE:
5444         return TREEVIEW_EnsureVisible(infoPtr, (HTREEITEM)lParam, TRUE);
5445
5446     case TVM_EXPAND:
5447         return TREEVIEW_ExpandMsg(infoPtr, (UINT)wParam, (HTREEITEM)lParam);
5448
5449     case TVM_GETBKCOLOR:
5450         return TREEVIEW_GetBkColor(infoPtr);
5451
5452     case TVM_GETCOUNT:
5453         return TREEVIEW_GetCount(infoPtr);
5454
5455     case TVM_GETEDITCONTROL:
5456         return TREEVIEW_GetEditControl(infoPtr);
5457
5458     case TVM_GETIMAGELIST:
5459         return TREEVIEW_GetImageList(infoPtr, wParam);
5460
5461     case TVM_GETINDENT:
5462         return TREEVIEW_GetIndent(infoPtr);
5463
5464     case TVM_GETINSERTMARKCOLOR:
5465         return TREEVIEW_GetInsertMarkColor(infoPtr);
5466
5467     case TVM_GETISEARCHSTRINGA:
5468         FIXME("Unimplemented msg TVM_GETISEARCHSTRINGA\n");
5469         return 0;
5470
5471     case TVM_GETISEARCHSTRINGW:
5472         FIXME("Unimplemented msg TVM_GETISEARCHSTRINGW\n");
5473         return 0;
5474
5475     case TVM_GETITEMA:
5476         return TREEVIEW_GetItemT(infoPtr, (LPTVITEMEXW)lParam, FALSE);
5477
5478     case TVM_GETITEMW:
5479         return TREEVIEW_GetItemT(infoPtr, (LPTVITEMEXW)lParam, TRUE);
5480
5481     case TVM_GETITEMHEIGHT:
5482         return TREEVIEW_GetItemHeight(infoPtr);
5483
5484     case TVM_GETITEMRECT:
5485         return TREEVIEW_GetItemRect(infoPtr, (BOOL)wParam, (LPRECT)lParam);
5486
5487     case TVM_GETITEMSTATE:
5488         return TREEVIEW_GetItemState(infoPtr, (HTREEITEM)wParam, (UINT)lParam);
5489
5490     case TVM_GETLINECOLOR:
5491         return TREEVIEW_GetLineColor(infoPtr);
5492
5493     case TVM_GETNEXTITEM:
5494         return TREEVIEW_GetNextItem(infoPtr, (UINT)wParam, (HTREEITEM)lParam);
5495
5496     case TVM_GETSCROLLTIME:
5497         return TREEVIEW_GetScrollTime(infoPtr);
5498
5499     case TVM_GETTEXTCOLOR:
5500         return TREEVIEW_GetTextColor(infoPtr);
5501
5502     case TVM_GETTOOLTIPS:
5503         return TREEVIEW_GetToolTips(infoPtr);
5504
5505     case TVM_GETUNICODEFORMAT:
5506         return TREEVIEW_GetUnicodeFormat(infoPtr);
5507
5508     case TVM_GETVISIBLECOUNT:
5509         return TREEVIEW_GetVisibleCount(infoPtr);
5510
5511     case TVM_HITTEST:
5512         return TREEVIEW_HitTest(infoPtr, (LPTVHITTESTINFO)lParam);
5513
5514     case TVM_INSERTITEMA:
5515         return TREEVIEW_InsertItemT(infoPtr, (LPTVINSERTSTRUCTW)lParam, FALSE);
5516
5517     case TVM_INSERTITEMW:
5518         return TREEVIEW_InsertItemT(infoPtr, (LPTVINSERTSTRUCTW)lParam, TRUE);
5519
5520     case TVM_SELECTITEM:
5521         return TREEVIEW_SelectItem(infoPtr, (INT)wParam, (HTREEITEM)lParam);
5522
5523     case TVM_SETBKCOLOR:
5524         return TREEVIEW_SetBkColor(infoPtr, (COLORREF)lParam);
5525
5526     case TVM_SETIMAGELIST:
5527         return TREEVIEW_SetImageList(infoPtr, wParam, (HIMAGELIST)lParam);
5528
5529     case TVM_SETINDENT:
5530         return TREEVIEW_SetIndent(infoPtr, (UINT)wParam);
5531
5532     case TVM_SETINSERTMARK:
5533         return TREEVIEW_SetInsertMark(infoPtr, (BOOL)wParam, (HTREEITEM)lParam);
5534
5535     case TVM_SETINSERTMARKCOLOR:
5536         return TREEVIEW_SetInsertMarkColor(infoPtr, (COLORREF)lParam);
5537
5538     case TVM_SETITEMA:
5539         return TREEVIEW_SetItemT(infoPtr, (LPTVITEMEXW)lParam, FALSE);
5540
5541     case TVM_SETITEMW:
5542         return TREEVIEW_SetItemT(infoPtr, (LPTVITEMEXW)lParam, TRUE);
5543
5544     case TVM_SETLINECOLOR:
5545         return TREEVIEW_SetLineColor(infoPtr, (COLORREF)lParam);
5546
5547     case TVM_SETITEMHEIGHT:
5548         return TREEVIEW_SetItemHeight(infoPtr, (INT)(SHORT)wParam);
5549
5550     case TVM_SETSCROLLTIME:
5551         return TREEVIEW_SetScrollTime(infoPtr, (UINT)wParam);
5552
5553     case TVM_SETTEXTCOLOR:
5554         return TREEVIEW_SetTextColor(infoPtr, (COLORREF)lParam);
5555
5556     case TVM_SETTOOLTIPS:
5557         return TREEVIEW_SetToolTips(infoPtr, (HWND)wParam);
5558
5559     case TVM_SETUNICODEFORMAT:
5560         return TREEVIEW_SetUnicodeFormat(infoPtr, (BOOL)wParam);
5561
5562     case TVM_SORTCHILDREN:
5563         return TREEVIEW_SortChildren(infoPtr, wParam, lParam);
5564
5565     case TVM_SORTCHILDRENCB:
5566         return TREEVIEW_SortChildrenCB(infoPtr, wParam, (LPTVSORTCB)lParam);
5567
5568     case WM_CHAR:
5569         return TREEVIEW_ProcessLetterKeys( hwnd, wParam, lParam );
5570
5571     case WM_COMMAND:
5572         return TREEVIEW_Command(infoPtr, wParam, lParam);
5573
5574     case WM_DESTROY:
5575         return TREEVIEW_Destroy(infoPtr);
5576
5577         /* WM_ENABLE */
5578
5579     case WM_ERASEBKGND:
5580         return TREEVIEW_EraseBackground(infoPtr, (HDC)wParam);
5581
5582     case WM_GETDLGCODE:
5583         return DLGC_WANTARROWS | DLGC_WANTCHARS;
5584
5585     case WM_GETFONT:
5586         return TREEVIEW_GetFont(infoPtr);
5587
5588     case WM_HSCROLL:
5589         return TREEVIEW_HScroll(infoPtr, wParam);
5590
5591     case WM_KEYDOWN:
5592         return TREEVIEW_KeyDown(infoPtr, wParam);
5593
5594     case WM_KILLFOCUS:
5595         return TREEVIEW_KillFocus(infoPtr);
5596
5597     case WM_LBUTTONDBLCLK:
5598         return TREEVIEW_LButtonDoubleClick(infoPtr, lParam);
5599
5600     case WM_LBUTTONDOWN:
5601         return TREEVIEW_LButtonDown(infoPtr, lParam);
5602
5603         /* WM_MBUTTONDOWN */
5604
5605     case WM_MOUSELEAVE:
5606         return TREEVIEW_MouseLeave(infoPtr);
5607
5608     case WM_MOUSEMOVE:
5609         if (infoPtr->dwStyle & TVS_TRACKSELECT)
5610             return TREEVIEW_MouseMove(infoPtr, wParam, lParam);
5611         else
5612             return 0;
5613
5614     case WM_NCPAINT:
5615         if (nc_paint (infoPtr, (HRGN)wParam))
5616             return 0;
5617         goto def;
5618
5619     case WM_NOTIFY:
5620         return TREEVIEW_Notify(infoPtr, wParam, lParam);
5621
5622     case WM_NOTIFYFORMAT:
5623         return TREEVIEW_NotifyFormat(infoPtr, (HWND)wParam, (UINT)lParam);
5624
5625     case WM_PRINTCLIENT:
5626     case WM_PAINT:
5627         return TREEVIEW_Paint(infoPtr, wParam);
5628
5629     case WM_RBUTTONDOWN:
5630         return TREEVIEW_RButtonDown(infoPtr, lParam);
5631
5632     case WM_SETCURSOR:
5633         return TREEVIEW_SetCursor(infoPtr, wParam, lParam);
5634
5635     case WM_SETFOCUS:
5636         return TREEVIEW_SetFocus(infoPtr);
5637
5638     case WM_SETFONT:
5639         return TREEVIEW_SetFont(infoPtr, (HFONT)wParam, (BOOL)lParam);
5640
5641     case WM_SETREDRAW:
5642         return TREEVIEW_SetRedraw(infoPtr, wParam, lParam);
5643
5644     case WM_SIZE:
5645         return TREEVIEW_Size(infoPtr, wParam, lParam);
5646
5647     case WM_STYLECHANGED:
5648         return TREEVIEW_StyleChanged(infoPtr, wParam, lParam);
5649
5650         /* WM_SYSCOLORCHANGE */
5651
5652         /* WM_SYSKEYDOWN */
5653
5654     case WM_TIMER:
5655         return TREEVIEW_HandleTimer(infoPtr, wParam);
5656
5657     case WM_THEMECHANGED:
5658         return theme_changed (infoPtr);
5659
5660     case WM_VSCROLL:
5661         return TREEVIEW_VScroll(infoPtr, wParam);
5662
5663         /* WM_WININICHANGE */
5664
5665     case WM_MOUSEWHEEL:
5666         if (wParam & (MK_SHIFT | MK_CONTROL))
5667             goto def;
5668         return TREEVIEW_MouseWheel(infoPtr, wParam);
5669
5670     case WM_DRAWITEM:
5671         TRACE("drawItem\n");
5672         goto def;
5673
5674     default:
5675         /* This mostly catches MFC and Delphi messages. :( */
5676         if ((uMsg >= WM_USER) && (uMsg < WM_APP))
5677             TRACE("Unknown msg %04x wp=%08x lp=%08lx\n", uMsg, wParam, lParam);
5678 def:
5679         return DefWindowProcW(hwnd, uMsg, wParam, lParam);
5680     }
5681 }
5682
5683
5684 /* Class Registration ***************************************************/
5685
5686 VOID
5687 TREEVIEW_Register(void)
5688 {
5689     WNDCLASSW wndClass;
5690
5691     TRACE("\n");
5692
5693     ZeroMemory(&wndClass, sizeof(WNDCLASSW));
5694     wndClass.style = CS_GLOBALCLASS | CS_DBLCLKS;
5695     wndClass.lpfnWndProc = TREEVIEW_WindowProc;
5696     wndClass.cbClsExtra = 0;
5697     wndClass.cbWndExtra = sizeof(TREEVIEW_INFO *);
5698
5699     wndClass.hCursor = LoadCursorW(0, (LPWSTR)IDC_ARROW);
5700     wndClass.hbrBackground = 0;
5701     wndClass.lpszClassName = WC_TREEVIEWW;
5702
5703     RegisterClassW(&wndClass);
5704 }
5705
5706
5707 VOID
5708 TREEVIEW_Unregister(void)
5709 {
5710     UnregisterClassW(WC_TREEVIEWW, NULL);
5711 }
5712
5713
5714 /* Tree Verification ****************************************************/
5715
5716 #ifdef NDEBUG
5717 static inline void
5718 TREEVIEW_VerifyChildren(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item);
5719
5720 static inline void TREEVIEW_VerifyItemCommon(TREEVIEW_INFO *infoPtr,
5721                                              TREEVIEW_ITEM *item)
5722 {
5723     assert(infoPtr != NULL);
5724     assert(item != NULL);
5725
5726     /* both NULL, or both non-null */
5727     assert((item->firstChild == NULL) == (item->lastChild == NULL));
5728
5729     assert(item->firstChild != item);
5730     assert(item->lastChild != item);
5731
5732     if (item->firstChild)
5733     {
5734         assert(item->firstChild->parent == item);
5735         assert(item->firstChild->prevSibling == NULL);
5736     }
5737
5738     if (item->lastChild)
5739     {
5740         assert(item->lastChild->parent == item);
5741         assert(item->lastChild->nextSibling == NULL);
5742     }
5743
5744     assert(item->nextSibling != item);
5745     if (item->nextSibling)
5746     {
5747         assert(item->nextSibling->parent == item->parent);
5748         assert(item->nextSibling->prevSibling == item);
5749     }
5750
5751     assert(item->prevSibling != item);
5752     if (item->prevSibling)
5753     {
5754         assert(item->prevSibling->parent == item->parent);
5755         assert(item->prevSibling->nextSibling == item);
5756     }
5757 }
5758
5759 static inline void
5760 TREEVIEW_VerifyItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
5761 {
5762     assert(item != NULL);
5763
5764     assert(item->parent != NULL);
5765     assert(item->parent != item);
5766     assert(item->iLevel == item->parent->iLevel + 1);
5767
5768     assert(DPA_GetPtrIndex(infoPtr->items, item) != -1);
5769
5770     TREEVIEW_VerifyItemCommon(infoPtr, item);
5771
5772     TREEVIEW_VerifyChildren(infoPtr, item);
5773 }
5774
5775 static inline void
5776 TREEVIEW_VerifyChildren(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
5777 {
5778     TREEVIEW_ITEM *child;
5779     assert(item != NULL);
5780
5781     for (child = item->firstChild; child != NULL; child = child->nextSibling)
5782         TREEVIEW_VerifyItem(infoPtr, child);
5783 }
5784
5785 static inline void
5786 TREEVIEW_VerifyRoot(TREEVIEW_INFO *infoPtr)
5787 {
5788     TREEVIEW_ITEM *root = infoPtr->root;
5789
5790     assert(root != NULL);
5791     assert(root->iLevel == -1);
5792     assert(root->parent == NULL);
5793     assert(root->prevSibling == NULL);
5794
5795     TREEVIEW_VerifyItemCommon(infoPtr, root);
5796
5797     TREEVIEW_VerifyChildren(infoPtr, root);
5798 }
5799
5800 static void
5801 TREEVIEW_VerifyTree(TREEVIEW_INFO *infoPtr)
5802 {
5803     assert(infoPtr != NULL);
5804
5805     TREEVIEW_VerifyRoot(infoPtr);
5806 }
5807 #endif