ReactOS  0.4.11-dev-433-g473ca91
treeview.c
Go to the documentation of this file.
1 /* Treeview control
2  *
3  * Copyright 1998 Eric Kohl <ekohl@abo.rhein-zeitung.de>
4  * Copyright 1998,1999 Alex Priem <alexp@sci.kun.nl>
5  * Copyright 1999 Sylvain St-Germain
6  * Copyright 2002 CodeWeavers, Aric Stewart
7  *
8  * This library is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * This library is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with this library; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
21  *
22  * NOTES
23  *
24  * Note that TREEVIEW_INFO * and HTREEITEM are the same thing.
25  *
26  * Note2: If item's text == LPSTR_TEXTCALLBACKA we allocate buffer
27  * of size TEXT_CALLBACK_SIZE in DoSetItem.
28  * We use callbackMask to keep track of fields to be updated.
29  *
30  * TODO:
31  * missing notifications: TVN_GETINFOTIP, TVN_KEYDOWN,
32  * TVN_SETDISPINFO
33  *
34  * missing styles: TVS_INFOTIP, TVS_RTLREADING,
35  *
36  * missing item styles: TVIS_EXPANDPARTIAL, TVIS_EX_FLAT,
37  * TVIS_EX_DISABLED
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 
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 "vssym32.h"
64 #include "wine/unicode.h"
65 #include "wine/debug.h"
66 #include "wine/exception.h"
67 #include "wine/heap.h"
68 
70 
71 /* internal structures */
72 typedef struct tagTREEVIEW_INFO
73 {
75  HWND hwndNotify; /* Owner window to send notifications to */
80  UINT uNumItems; /* number of valid TREEVIEW_ITEMs */
81  INT cdmode; /* last custom draw setting */
82  UINT uScrollTime; /* max. time for scrolling in milliseconds */
83  BOOL bRedraw; /* if FALSE we validate but don't redraw in TREEVIEW_Paint() */
84 
85  UINT uItemHeight; /* item height */
87 
88  LONG clientWidth; /* width of control window */
89  LONG clientHeight; /* height of control window */
90 
91  LONG treeWidth; /* width of visible tree items */
92  LONG treeHeight; /* height of visible tree items */
93 
94  UINT uIndent; /* indentation in pixels */
95  HTREEITEM selectedItem; /* handle to selected item or 0 if none */
96  HTREEITEM hotItem; /* handle currently under cursor, 0 if none */
97  HTREEITEM focusedItem; /* item that was under the cursor when WM_LBUTTONDOWN was received */
98  HTREEITEM editItem; /* item being edited with builtin edit box */
99 
100  HTREEITEM firstVisible; /* handle to item whose top edge is at y = 0 */
102  HTREEITEM dropItem; /* handle to item selected by drag cursor */
103  HTREEITEM insertMarkItem; /* item after which insertion mark is placed */
104  BOOL insertBeforeorAfter; /* flag used by TVM_SETINSERTMARK */
105  HIMAGELIST dragList; /* Bitmap of dragged item */
119 
121  WNDPROC wpEditOrig; /* orig window proc for subclassing edit */
124 
125  BOOL bNtfUnicode; /* TRUE if should send NOTIFY with W */
133 
138 } TREEVIEW_INFO;
139 
140 typedef struct _TREEITEM /* HTREEITEM is a _TREEINFO *. */
141 {
142  HTREEITEM parent; /* handle to parent or 0 if at root */
143  HTREEITEM nextSibling; /* handle to next item in list, 0 if last */
144  HTREEITEM firstChild; /* handle to first child or 0 if no child */
145 
151  int iImage;
156  int iIntegral; /* item height multiplier (1 is normal) */
157  int iLevel; /* indentation level:0=root level */
159  HTREEITEM prevSibling; /* handle to prev item in list, 0 if first */
165  LONG textWidth; /* horizontal text extent for pszText */
166  LONG visibleOrder; /* Depth-first numbering of the items whose ancestors are all expanded,
167  corresponding to a top-to-bottom ordering in the tree view.
168  Each item takes up "item.iIntegral" spots in the visible order.
169  0 is the root's first child. */
170  const TREEVIEW_INFO *infoPtr; /* tree data this item belongs to */
171 } TREEVIEW_ITEM;
172 
173 /******** Defines that TREEVIEW_ProcessLetterKeys uses ****************/
174 #define KEY_DELAY 450
175 
176 /* bitflags for infoPtr->uInternalStatus */
177 
178 #define TV_HSCROLL 0x01 /* treeview too large to fit in window */
179 #define TV_VSCROLL 0x02 /* (horizontal/vertical) */
180 #define TV_LDRAG 0x04 /* Lbutton pushed to start drag */
181 #define TV_LDRAGGING 0x08 /* Lbutton pushed, mouse moved. */
182 #define TV_RDRAG 0x10 /* ditto Rbutton */
183 #define TV_RDRAGGING 0x20
184 
185 /* bitflags for infoPtr->timer */
186 
187 #define TV_EDIT_TIMER 2
188 #define TV_EDIT_TIMER_SET 2
189 
190 #define TEXT_CALLBACK_SIZE 260
191 
192 #define TREEVIEW_LEFT_MARGIN 8
193 
194 #define MINIMUM_INDENT 19
195 
196 #define CALLBACK_MASK_ALL (TVIF_TEXT|TVIF_CHILDREN|TVIF_IMAGE|TVIF_SELECTEDIMAGE)
197 
198 #define STATEIMAGEINDEX(x) (((x) >> 12) & 0x0f)
199 #define OVERLAYIMAGEINDEX(x) (((x) >> 8) & 0x0f)
200 #define ISVISIBLE(x) ((x)->visibleOrder >= 0)
201 
202 #define GETLINECOLOR(x) ((x) == CLR_DEFAULT ? comctl32_color.clrGrayText : (x))
203 #define GETBKCOLOR(x) ((x) == CLR_NONE ? comctl32_color.clrWindow : (x))
204 #define GETTXTCOLOR(x) ((x) == CLR_NONE ? comctl32_color.clrWindowText : (x))
205 #define GETINSCOLOR(x) ((x) == CLR_DEFAULT ? comctl32_color.clrBtnText : (x))
206 
207 static const WCHAR themeClass[] = { 'T','r','e','e','v','i','e','w',0 };
208 
209 
211 
212 
213 static VOID TREEVIEW_Invalidate(const TREEVIEW_INFO *, const TREEVIEW_ITEM *);
214 
218 static LRESULT TREEVIEW_EndEditLabelNow(TREEVIEW_INFO *infoPtr, BOOL bCancel);
221 
222 /* Random Utilities *****************************************************/
223 static void TREEVIEW_VerifyTree(TREEVIEW_INFO *infoPtr);
224 
225 /* Returns the treeview private data if hwnd is a treeview.
226  * Otherwise returns an undefined value. */
227 static inline TREEVIEW_INFO *
229 {
230  return (TREEVIEW_INFO *)GetWindowLongPtrW(hwnd, 0);
231 }
232 
233 /* Don't call this. Nothing wants an item index. */
234 static inline int
236 {
237  return DPA_GetPtrIndex(infoPtr->items, handle);
238 }
239 
240 /* Checks if item has changed and needs to be redrawn */
241 static inline BOOL item_changed (const TREEVIEW_ITEM *tiOld, const TREEVIEW_ITEM *tiNew,
242  const TVITEMEXW *tvChange)
243 {
244  /* Number of children has changed */
245  if ((tvChange->mask & TVIF_CHILDREN) && (tiOld->cChildren != tiNew->cChildren))
246  return TRUE;
247 
248  /* Image has changed and it's not a callback */
249  if ((tvChange->mask & TVIF_IMAGE) && (tiOld->iImage != tiNew->iImage) &&
250  tiNew->iImage != I_IMAGECALLBACK)
251  return TRUE;
252 
253  /* Selected image has changed and it's not a callback */
254  if ((tvChange->mask & TVIF_SELECTEDIMAGE) && (tiOld->iSelectedImage != tiNew->iSelectedImage) &&
256  return TRUE;
257 
258  if ((tvChange->mask & TVIF_EXPANDEDIMAGE) && (tiOld->iExpandedImage != tiNew->iExpandedImage) &&
260  return TRUE;
261 
262  /* Text has changed and it's not a callback */
263  if ((tvChange->mask & TVIF_TEXT) && (tiOld->pszText != tiNew->pszText) &&
264  tiNew->pszText != LPSTR_TEXTCALLBACKW)
265  return TRUE;
266 
267  /* Indent has changed */
268  if ((tvChange->mask & TVIF_INTEGRAL) && (tiOld->iIntegral != tiNew->iIntegral))
269  return TRUE;
270 
271  /* Item state has changed */
272  if ((tvChange->mask & TVIF_STATE) && ((tiOld->state ^ tiNew->state) & tvChange->stateMask ))
273  return TRUE;
274 
275  return FALSE;
276 }
277 
278 /***************************************************************************
279  * This method checks that handle is an item for this tree.
280  */
281 static BOOL
283 {
284  if (TREEVIEW_GetItemIndex(infoPtr, handle) == -1)
285  {
286  TRACE("invalid item %p\n", handle);
287  return FALSE;
288  }
289  else
290  return TRUE;
291 }
292 
293 static HFONT
295 {
296  LOGFONTW font;
297 
298  GetObjectW(hOrigFont, sizeof(font), &font);
299  font.lfWeight = FW_BOLD;
300  return CreateFontIndirectW(&font);
301 }
302 
303 static HFONT
305 {
306  LOGFONTW font;
307 
308  GetObjectW(hOrigFont, sizeof(font), &font);
309  font.lfUnderline = TRUE;
310  return CreateFontIndirectW(&font);
311 }
312 
313 static HFONT
315 {
316  LOGFONTW font;
317 
318  GetObjectW(hfont, sizeof(font), &font);
319  font.lfWeight = FW_BOLD;
320  font.lfUnderline = TRUE;
321  return CreateFontIndirectW(&font);
322 }
323 
324 static inline HFONT
326 {
327  if ((infoPtr->dwStyle & TVS_TRACKSELECT) && (item == infoPtr->hotItem))
328  return item->state & TVIS_BOLD ? infoPtr->hBoldUnderlineFont : infoPtr->hUnderlineFont;
329  if (item->state & TVIS_BOLD)
330  return infoPtr->hBoldFont;
331  return infoPtr->hFont;
332 }
333 
334 /* for trace/debugging purposes only */
335 static const char *
337 {
338  if (item == NULL) return "<null item>";
339  if (item->pszText == LPSTR_TEXTCALLBACKW) return "<callback>";
340  if (item->pszText == NULL) return "<null>";
341  return debugstr_w(item->pszText);
342 }
343 
344 /* An item is not a child of itself. */
345 static BOOL
347 {
348  do
349  {
350  child = child->parent;
351  if (child == parent) return TRUE;
352  } while (child != NULL);
353 
354  return FALSE;
355 }
356 
357 static BOOL
359 {
360  return !(infoPtr->dwStyle & TVS_HASLINES) && (infoPtr->dwStyle & TVS_FULLROWSELECT);
361 }
362 
363 static BOOL
365 {
366  if (TREEVIEW_IsFullRowSelect(infoPtr))
368  else
369  return ht->flags & TVHT_ONITEM;
370 }
371 
372 /* Tree Traversal *******************************************************/
373 
374 /***************************************************************************
375  * This method returns the last expanded sibling or child child item
376  * of a tree node
377  */
378 static TREEVIEW_ITEM *
380 {
381  if (!item) return NULL;
382 
383  while (item->lastChild)
384  {
385  if (item->state & TVIS_EXPANDED)
386  item = item->lastChild;
387  else
388  break;
389  }
390 
391  if (item == infoPtr->root)
392  return NULL;
393 
394  return item;
395 }
396 
397 /***************************************************************************
398  * This method returns the previous non-hidden item in the list not
399  * considering the tree hierarchy.
400  */
401 static TREEVIEW_ITEM *
403 {
404  if (tvItem->prevSibling)
405  {
406  /* This item has a prevSibling, get the last item in the sibling's tree. */
407  TREEVIEW_ITEM *upItem = tvItem->prevSibling;
408 
409  if ((upItem->state & TVIS_EXPANDED) && upItem->lastChild != NULL)
410  return TREEVIEW_GetLastListItem(infoPtr, upItem->lastChild);
411  else
412  return upItem;
413  }
414  else
415  {
416  /* this item does not have a prevSibling, get the parent */
417  return (tvItem->parent != infoPtr->root) ? tvItem->parent : NULL;
418  }
419 }
420 
421 
422 /***************************************************************************
423  * This method returns the next physical item in the treeview not
424  * considering the tree hierarchy.
425  */
426 static TREEVIEW_ITEM *
428 {
429  /*
430  * If this item has children and is expanded, return the first child
431  */
432  if ((tvItem->state & TVIS_EXPANDED) && tvItem->firstChild != NULL)
433  {
434  return tvItem->firstChild;
435  }
436 
437 
438  /*
439  * try to get the sibling
440  */
441  if (tvItem->nextSibling)
442  return tvItem->nextSibling;
443 
444  /*
445  * Otherwise, get the parent's sibling.
446  */
447  while (tvItem->parent)
448  {
449  tvItem = tvItem->parent;
450 
451  if (tvItem->nextSibling)
452  return tvItem->nextSibling;
453  }
454 
455  return NULL;
456 }
457 
458 /***************************************************************************
459  * This method returns the nth item starting at the given item. It returns
460  * the last item (or first) we we run out of items.
461  *
462  * Will scroll backward if count is <0.
463  * forward if count is >0.
464  */
465 static TREEVIEW_ITEM *
467  LONG count)
468 {
469  TREEVIEW_ITEM *(*next_item)(const TREEVIEW_INFO *, const TREEVIEW_ITEM *);
470  TREEVIEW_ITEM *previousItem;
471 
472  assert(item != NULL);
473 
474  if (count > 0)
475  {
477  }
478  else if (count < 0)
479  {
480  count = -count;
482  }
483  else
484  return item;
485 
486  do
487  {
488  previousItem = item;
489  item = next_item(infoPtr, item);
490 
491  } while (--count && item != NULL);
492 
493 
494  return item ? item : previousItem;
495 }
496 
497 /* Notifications ************************************************************/
498 
499 static INT get_notifycode(const TREEVIEW_INFO *infoPtr, INT code)
500 {
501  if (!infoPtr->bNtfUnicode) {
502  switch (code) {
503  case TVN_SELCHANGINGW: return TVN_SELCHANGINGA;
504  case TVN_SELCHANGEDW: return TVN_SELCHANGEDA;
505  case TVN_GETDISPINFOW: return TVN_GETDISPINFOA;
506  case TVN_SETDISPINFOW: return TVN_SETDISPINFOA;
509  case TVN_BEGINDRAGW: return TVN_BEGINDRAGA;
510  case TVN_BEGINRDRAGW: return TVN_BEGINRDRAGA;
511  case TVN_DELETEITEMW: return TVN_DELETEITEMA;
514  case TVN_GETINFOTIPW: return TVN_GETINFOTIPA;
515  }
516  }
517  return code;
518 }
519 
520 static inline BOOL
522 {
523  TRACE("code=%d, hdr=%p\n", code, hdr);
524 
525  hdr->hwndFrom = infoPtr->hwnd;
526  hdr->idFrom = GetWindowLongPtrW(infoPtr->hwnd, GWLP_ID);
527  hdr->code = get_notifycode(infoPtr, code);
528 
529  return SendMessageW(infoPtr->hwndNotify, WM_NOTIFY, hdr->idFrom, (LPARAM)hdr);
530 }
531 
532 static BOOL
534 {
535  NMHDR hdr;
536  return TREEVIEW_SendRealNotify(infoPtr, code, &hdr);
537 }
538 
539 static VOID
541 {
542  tvItem->mask = mask;
543  tvItem->hItem = item;
544  tvItem->state = item->state;
545  tvItem->stateMask = 0;
546  tvItem->iImage = item->iImage;
547  tvItem->iSelectedImage = item->iSelectedImage;
548  tvItem->cChildren = item->cChildren;
549  tvItem->lParam = item->lParam;
550 
551  if(mask & TVIF_TEXT)
552  {
553  if (!infoPtr->bNtfUnicode)
554  {
555  tvItem->cchTextMax = WideCharToMultiByte( CP_ACP, 0, item->pszText, -1, NULL, 0, NULL, NULL );
556  tvItem->pszText = heap_alloc (tvItem->cchTextMax);
557  WideCharToMultiByte( CP_ACP, 0, item->pszText, -1, (LPSTR)tvItem->pszText, tvItem->cchTextMax, 0, 0 );
558  }
559  else
560  {
561  tvItem->cchTextMax = item->cchTextMax;
562  tvItem->pszText = item->pszText;
563  }
564  }
565  else
566  {
567  tvItem->cchTextMax = 0;
568  tvItem->pszText = NULL;
569  }
570 }
571 
572 static BOOL
574  UINT mask, HTREEITEM oldItem, HTREEITEM newItem)
575 {
576  NMTREEVIEWW nmhdr;
577  BOOL ret;
578 
579  TRACE("code:%d action:0x%x olditem:%p newitem:%p\n",
580  code, action, oldItem, newItem);
581 
582  memset(&nmhdr, 0, sizeof(NMTREEVIEWW));
583  nmhdr.action = action;
584 
585  if (oldItem)
586  TREEVIEW_TVItemFromItem(infoPtr, mask, &nmhdr.itemOld, oldItem);
587 
588  if (newItem)
589  TREEVIEW_TVItemFromItem(infoPtr, mask, &nmhdr.itemNew, newItem);
590 
591  nmhdr.ptDrag.x = 0;
592  nmhdr.ptDrag.y = 0;
593 
594  ret = TREEVIEW_SendRealNotify(infoPtr, code, &nmhdr.hdr);
595  if (!infoPtr->bNtfUnicode)
596  {
597  heap_free(nmhdr.itemOld.pszText);
598  heap_free(nmhdr.itemNew.pszText);
599  }
600  return ret;
601 }
602 
603 static BOOL
605  HTREEITEM dragItem, POINT pt)
606 {
607  NMTREEVIEWW nmhdr;
608 
609  TRACE("code:%d dragitem:%p\n", code, dragItem);
610 
611  nmhdr.action = 0;
613  nmhdr.itemNew.hItem = dragItem;
614  nmhdr.itemNew.state = dragItem->state;
615  nmhdr.itemNew.lParam = dragItem->lParam;
616 
617  nmhdr.ptDrag.x = pt.x;
618  nmhdr.ptDrag.y = pt.y;
619 
620  return TREEVIEW_SendRealNotify(infoPtr, code, &nmhdr.hdr);
621 }
622 
623 
624 static BOOL
626  HDC hdc, RECT rc)
627 {
628  NMTVCUSTOMDRAW nmcdhdr;
629  NMCUSTOMDRAW *nmcd;
630 
631  TRACE("drawstage:0x%x hdc:%p\n", dwDrawStage, hdc);
632 
633  nmcd = &nmcdhdr.nmcd;
634  nmcd->dwDrawStage = dwDrawStage;
635  nmcd->hdc = hdc;
636  nmcd->rc = rc;
637  nmcd->dwItemSpec = 0;
638  nmcd->uItemState = 0;
639  nmcd->lItemlParam = 0;
640  nmcdhdr.clrText = infoPtr->clrText;
641  nmcdhdr.clrTextBk = infoPtr->clrBk;
642  nmcdhdr.iLevel = 0;
643 
644  return TREEVIEW_SendRealNotify(infoPtr, NM_CUSTOMDRAW, &nmcdhdr.nmcd.hdr);
645 }
646 
647 /* FIXME: need to find out when the flags in uItemState need to be set */
648 
649 static BOOL
651  TREEVIEW_ITEM *item, UINT uItemDrawState,
652  NMTVCUSTOMDRAW *nmcdhdr)
653 {
654  NMCUSTOMDRAW *nmcd;
655  DWORD dwDrawStage;
656  DWORD_PTR dwItemSpec;
657  UINT uItemState;
658 
659  dwDrawStage = CDDS_ITEM | uItemDrawState;
660  dwItemSpec = (DWORD_PTR)item;
661  uItemState = 0;
662  if (item->state & TVIS_SELECTED)
663  uItemState |= CDIS_SELECTED;
664  if (item == infoPtr->selectedItem)
665  uItemState |= CDIS_FOCUS;
666  if (item == infoPtr->hotItem)
667  uItemState |= CDIS_HOT;
668 
669  nmcd = &nmcdhdr->nmcd;
670  nmcd->dwDrawStage = dwDrawStage;
671  nmcd->hdc = hdc;
672  nmcd->rc = item->rect;
673  nmcd->dwItemSpec = dwItemSpec;
674  nmcd->uItemState = uItemState;
675  nmcd->lItemlParam = item->lParam;
676  nmcdhdr->iLevel = item->iLevel;
677 
678  TRACE("drawstage:0x%x hdc:%p item:%lx, itemstate:0x%x, lItemlParam:0x%lx\n",
679  nmcd->dwDrawStage, nmcd->hdc, nmcd->dwItemSpec,
680  nmcd->uItemState, nmcd->lItemlParam);
681 
682  return TREEVIEW_SendRealNotify(infoPtr, NM_CUSTOMDRAW, &nmcdhdr->nmcd.hdr);
683 }
684 
685 static BOOL
687 {
688  NMTVDISPINFOW tvdi;
689  BOOL ret;
690 
692  &tvdi.item, editItem);
693 
694  ret = TREEVIEW_SendRealNotify(infoPtr, TVN_BEGINLABELEDITW, &tvdi.hdr);
695 
696  if (!infoPtr->bNtfUnicode)
697  heap_free(tvdi.item.pszText);
698 
699  return ret;
700 }
701 
702 static void
704  UINT mask)
705 {
706  NMTVDISPINFOEXW callback;
707 
708  TRACE("mask=0x%x, callbackmask=0x%x\n", mask, item->callbackMask);
709  mask &= item->callbackMask;
710 
711  if (mask == 0) return;
712 
713  /* 'state' always contains valid value, as well as 'lParam'.
714  * All other parameters are uninitialized.
715  */
716  callback.item.pszText = item->pszText;
717  callback.item.cchTextMax = item->cchTextMax;
718  callback.item.mask = mask;
719  callback.item.hItem = item;
720  callback.item.state = item->state;
721  callback.item.lParam = item->lParam;
722 
723  /* If text is changed we need to recalculate textWidth */
724  if (mask & TVIF_TEXT)
725  item->textWidth = 0;
726 
727  TREEVIEW_SendRealNotify(infoPtr, TVN_GETDISPINFOW, &callback.hdr);
728  TRACE("resulting code 0x%08x\n", callback.hdr.code);
729 
730  /* It may have changed due to a call to SetItem. */
731  mask &= item->callbackMask;
732 
733  if ((mask & TVIF_TEXT) && callback.item.pszText != item->pszText)
734  {
735  /* Instead of copying text into our buffer user specified his own */
736  if (!infoPtr->bNtfUnicode && (callback.hdr.code == TVN_GETDISPINFOA)) {
737  LPWSTR newText;
738  int buflen;
739  int len = MultiByteToWideChar( CP_ACP, 0,
740  (LPSTR)callback.item.pszText, -1,
741  NULL, 0);
742  buflen = max((len)*sizeof(WCHAR), TEXT_CALLBACK_SIZE);
743  newText = heap_realloc(item->pszText, buflen);
744 
745  TRACE("returned str %s, len=%d, buflen=%d\n",
746  debugstr_a((LPSTR)callback.item.pszText), len, buflen);
747 
748  if (newText)
749  {
750  item->pszText = newText;
752  (LPSTR)callback.item.pszText, -1,
753  item->pszText, buflen/sizeof(WCHAR));
754  item->cchTextMax = buflen/sizeof(WCHAR);
755  }
756  /* If realloc fails we have nothing to do, but keep original text */
757  }
758  else {
759  int len = max(lstrlenW(callback.item.pszText) + 1,
761  LPWSTR newText = heap_realloc(item->pszText, len);
762 
763  TRACE("returned wstr %s, len=%d\n",
764  debugstr_w(callback.item.pszText), len);
765 
766  if (newText)
767  {
768  item->pszText = newText;
769  strcpyW(item->pszText, callback.item.pszText);
770  item->cchTextMax = len;
771  }
772  /* If realloc fails we have nothing to do, but keep original text */
773  }
774  }
775  else if (mask & TVIF_TEXT) {
776  /* User put text into our buffer, that is ok unless A string */
777  if (!infoPtr->bNtfUnicode && (callback.hdr.code == TVN_GETDISPINFOA)) {
778  LPWSTR newText;
779  int buflen;
780  int len = MultiByteToWideChar( CP_ACP, 0,
781  (LPSTR)callback.item.pszText, -1,
782  NULL, 0);
783  buflen = max((len)*sizeof(WCHAR), TEXT_CALLBACK_SIZE);
784  newText = heap_alloc(buflen);
785 
786  TRACE("same buffer str %s, len=%d, buflen=%d\n",
787  debugstr_a((LPSTR)callback.item.pszText), len, buflen);
788 
789  if (newText)
790  {
791  LPWSTR oldText = item->pszText;
792  item->pszText = newText;
794  (LPSTR)callback.item.pszText, -1,
795  item->pszText, buflen/sizeof(WCHAR));
796  item->cchTextMax = buflen/sizeof(WCHAR);
797  heap_free(oldText);
798  }
799  }
800  }
801 
802  if (mask & TVIF_IMAGE)
803  item->iImage = callback.item.iImage;
804 
805  if (mask & TVIF_SELECTEDIMAGE)
806  item->iSelectedImage = callback.item.iSelectedImage;
807 
808  if (mask & TVIF_EXPANDEDIMAGE)
809  item->iExpandedImage = callback.item.iExpandedImage;
810 
811  if (mask & TVIF_CHILDREN)
812  item->cChildren = callback.item.cChildren;
813 
814  if (callback.item.mask & TVIF_STATE)
815  {
816  item->state &= ~callback.item.stateMask;
817  item->state |= (callback.item.state & callback.item.stateMask);
818  }
819 
820  /* These members are now permanently set. */
821  if (callback.item.mask & TVIF_DI_SETITEM)
822  item->callbackMask &= ~callback.item.mask;
823 }
824 
825 /***************************************************************************
826  * This function uses cChildren field to decide whether the item has
827  * children or not.
828  * Note: if this returns TRUE, the child items may not actually exist,
829  * they could be virtual.
830  *
831  * Just use item->firstChild to check for physical children.
832  */
833 static BOOL
835 {
836  TREEVIEW_UpdateDispInfo(infoPtr, item, TVIF_CHILDREN);
837  /* Protect for a case when callback field is not changed by a host,
838  otherwise negative values trigger normal notifications. */
839  return item->cChildren != 0 && item->cChildren != I_CHILDRENCALLBACK;
840 }
841 
842 static INT TREEVIEW_NotifyFormat (TREEVIEW_INFO *infoPtr, HWND hwndFrom, UINT nCommand)
843 {
844  INT format;
845 
846  TRACE("(hwndFrom=%p, nCommand=%d)\n", hwndFrom, nCommand);
847 
848  if (nCommand != NF_REQUERY) return 0;
849 
850  format = SendMessageW(hwndFrom, WM_NOTIFYFORMAT, (WPARAM)infoPtr->hwnd, NF_QUERY);
851  TRACE("format=%d\n", format);
852 
853  /* Invalid format returned by NF_QUERY defaults to ANSI*/
854  if (format != NFR_ANSI && format != NFR_UNICODE)
855  format = NFR_ANSI;
856 
857  infoPtr->bNtfUnicode = (format == NFR_UNICODE);
858 
859  return format;
860 }
861 
862 /* Item Position ********************************************************/
863 
864 /* Compute linesOffset, stateOffset, imageOffset, textOffset of an item. */
865 static VOID
867 {
868  /* has TVS_LINESATROOT and (TVS_HASLINES|TVS_HASBUTTONS) */
870  > TVS_LINESATROOT);
871 
872  item->linesOffset = infoPtr->uIndent * (lar ? item->iLevel : item->iLevel - 1)
873  - infoPtr->scrollX;
874  item->stateOffset = item->linesOffset + infoPtr->uIndent;
875  item->imageOffset = item->stateOffset
876  + (STATEIMAGEINDEX(item->state) ? infoPtr->stateImageWidth : 0);
877  item->textOffset = item->imageOffset + infoPtr->normalImageWidth;
878 }
879 
880 static VOID
882 {
883  HDC hdc;
884  HFONT hOldFont=0;
885  SIZE sz;
886 
887  /* DRAW's OM docker creates items like this */
888  if (item->pszText == NULL)
889  {
890  item->textWidth = 0;
891  return;
892  }
893 
894  if (hDC != 0)
895  {
896  hdc = hDC;
897  }
898  else
899  {
900  hdc = GetDC(infoPtr->hwnd);
901  hOldFont = SelectObject(hdc, TREEVIEW_FontForItem(infoPtr, item));
902  }
903 
904  GetTextExtentPoint32W(hdc, item->pszText, strlenW(item->pszText), &sz);
905  item->textWidth = sz.cx;
906 
907  if (hDC == 0)
908  {
909  SelectObject(hdc, hOldFont);
910  ReleaseDC(0, hdc);
911  }
912 }
913 
914 static VOID
916 {
917  item->rect.top = infoPtr->uItemHeight *
918  (item->visibleOrder - infoPtr->firstVisible->visibleOrder);
919 
920  item->rect.bottom = item->rect.top
921  + infoPtr->uItemHeight * item->iIntegral - 1;
922 
923  item->rect.left = 0;
924  item->rect.right = infoPtr->clientWidth;
925 }
926 
927 /* We know that only items after start need their order updated. */
928 static void
930 {
932  int order;
933 
934  if (!start)
935  {
936  start = infoPtr->root->firstChild;
937  order = 0;
938  }
939  else
940  order = start->visibleOrder;
941 
942  for (item = start; item != NULL;
943  item = TREEVIEW_GetNextListItem(infoPtr, item))
944  {
945  if (!ISVISIBLE(item) && order > 0)
947  item->visibleOrder = order;
948  order += item->iIntegral;
949  }
950 
951  infoPtr->maxVisibleOrder = order;
952 
953  for (item = start; item != NULL;
954  item = TREEVIEW_GetNextListItem(infoPtr, item))
955  {
956  TREEVIEW_ComputeItemRect(infoPtr, item);
957  }
958 }
959 
960 
961 /* Update metrics of all items in selected subtree.
962  * root must be expanded
963  */
964 static VOID
966 {
967  TREEVIEW_ITEM *sibling;
968  HDC hdc;
969  HFONT hOldFont;
970 
971  if (!root->firstChild || !(root->state & TVIS_EXPANDED))
972  return;
973 
974  root->state &= ~TVIS_EXPANDED;
975  sibling = TREEVIEW_GetNextListItem(infoPtr, root);
976  root->state |= TVIS_EXPANDED;
977 
978  hdc = GetDC(infoPtr->hwnd);
979  hOldFont = SelectObject(hdc, infoPtr->hFont);
980 
981  for (; root != sibling;
982  root = TREEVIEW_GetNextListItem(infoPtr, root))
983  {
985 
986  if (root->callbackMask & TVIF_TEXT)
987  TREEVIEW_UpdateDispInfo(infoPtr, root, TVIF_TEXT);
988 
989  if (root->textWidth == 0)
990  {
991  SelectObject(hdc, TREEVIEW_FontForItem(infoPtr, root));
992  TREEVIEW_ComputeTextWidth(infoPtr, root, hdc);
993  }
994  }
995 
996  SelectObject(hdc, hOldFont);
997  ReleaseDC(infoPtr->hwnd, hdc);
998 }
999 
1000 /* Item Allocation **********************************************************/
1001 
1002 static TREEVIEW_ITEM *
1004 {
1005  TREEVIEW_ITEM *newItem = heap_alloc_zero(sizeof(*newItem));
1006 
1007  if (!newItem)
1008  return NULL;
1009 
1010  /* I_IMAGENONE would make more sense but this is neither what is
1011  * documented (MSDN doesn't specify) nor what Windows actually does
1012  * (it sets it to zero)... and I can so imagine an application using
1013  * inc/dec to toggle the images. */
1014  newItem->iImage = 0;
1015  newItem->iSelectedImage = 0;
1016  newItem->iExpandedImage = (WORD)I_IMAGENONE;
1017  newItem->infoPtr = infoPtr;
1018 
1019  if (DPA_InsertPtr(infoPtr->items, INT_MAX, newItem) == -1)
1020  {
1021  heap_free(newItem);
1022  return NULL;
1023  }
1024 
1025  return newItem;
1026 }
1027 
1028 /* Exact opposite of TREEVIEW_AllocateItem. In particular, it does not
1029  * free item->pszText. */
1030 static void
1032 {
1033  DPA_DeletePtr(infoPtr->items, DPA_GetPtrIndex(infoPtr->items, item));
1034  if (infoPtr->selectedItem == item)
1035  infoPtr->selectedItem = NULL;
1036  if (infoPtr->hotItem == item)
1037  infoPtr->hotItem = NULL;
1038  if (infoPtr->focusedItem == item)
1039  infoPtr->focusedItem = NULL;
1040  if (infoPtr->firstVisible == item)
1041  infoPtr->firstVisible = NULL;
1042  if (infoPtr->dropItem == item)
1043  infoPtr->dropItem = NULL;
1044  if (infoPtr->insertMarkItem == item)
1045  infoPtr->insertMarkItem = NULL;
1046  heap_free(item);
1047 }
1048 
1049 
1050 /* Item Insertion *******************************************************/
1051 
1052 /***************************************************************************
1053  * This method inserts newItem before sibling as a child of parent.
1054  * sibling can be NULL, but only if parent has no children.
1055  */
1056 static void
1059 {
1060  assert(parent != NULL);
1061 
1062  if (sibling != NULL)
1063  {
1064  assert(sibling->parent == parent);
1065 
1066  if (sibling->prevSibling != NULL)
1067  sibling->prevSibling->nextSibling = newItem;
1068 
1069  newItem->prevSibling = sibling->prevSibling;
1070  sibling->prevSibling = newItem;
1071  }
1072  else
1073  newItem->prevSibling = NULL;
1074 
1075  newItem->nextSibling = sibling;
1076 
1077  if (parent->firstChild == sibling)
1078  parent->firstChild = newItem;
1079 
1080  if (parent->lastChild == NULL)
1081  parent->lastChild = newItem;
1082 }
1083 
1084 /***************************************************************************
1085  * This method inserts newItem after sibling as a child of parent.
1086  * sibling can be NULL, but only if parent has no children.
1087  */
1088 static void
1091 {
1092  assert(parent != NULL);
1093 
1094  if (sibling != NULL)
1095  {
1096  assert(sibling->parent == parent);
1097 
1098  if (sibling->nextSibling != NULL)
1099  sibling->nextSibling->prevSibling = newItem;
1100 
1101  newItem->nextSibling = sibling->nextSibling;
1102  sibling->nextSibling = newItem;
1103  }
1104  else
1105  newItem->nextSibling = NULL;
1106 
1107  newItem->prevSibling = sibling;
1108 
1109  if (parent->lastChild == sibling)
1110  parent->lastChild = newItem;
1111 
1112  if (parent->firstChild == NULL)
1113  parent->firstChild = newItem;
1114 }
1115 
1116 static BOOL
1118  const TVITEMEXW *tvItem, BOOL isW)
1119 {
1120  UINT callbackClear = 0;
1121  UINT callbackSet = 0;
1122 
1123  TRACE("item %p\n", item);
1124  /* Do this first in case it fails. */
1125  if (tvItem->mask & TVIF_TEXT)
1126  {
1127  item->textWidth = 0; /* force width recalculation */
1128  if (tvItem->pszText != LPSTR_TEXTCALLBACKW && tvItem->pszText != NULL) /* covers != TEXTCALLBACKA too, and undocumented: pszText of NULL also means TEXTCALLBACK */
1129  {
1130  int len;
1131  LPWSTR newText;
1132  if (isW)
1133  len = lstrlenW(tvItem->pszText) + 1;
1134  else
1135  len = MultiByteToWideChar(CP_ACP, 0, (LPSTR)tvItem->pszText, -1, NULL, 0);
1136 
1137  newText = heap_realloc(item->pszText, len * sizeof(WCHAR));
1138 
1139  if (newText == NULL) return FALSE;
1140 
1141  callbackClear |= TVIF_TEXT;
1142 
1143  item->pszText = newText;
1144  item->cchTextMax = len;
1145  if (isW)
1146  lstrcpynW(item->pszText, tvItem->pszText, len);
1147  else
1148  MultiByteToWideChar(CP_ACP, 0, (LPSTR)tvItem->pszText, -1,
1149  item->pszText, len);
1150 
1151  TRACE("setting text %s, item %p\n", debugstr_w(item->pszText), item);
1152  }
1153  else
1154  {
1155  callbackSet |= TVIF_TEXT;
1156  item->pszText = heap_realloc(item->pszText, TEXT_CALLBACK_SIZE * sizeof(WCHAR));
1158  TRACE("setting callback, item %p\n", item);
1159  }
1160  }
1161 
1162  if (tvItem->mask & TVIF_CHILDREN)
1163  {
1164  item->cChildren = tvItem->cChildren;
1165 
1166  if (item->cChildren == I_CHILDRENCALLBACK)
1167  callbackSet |= TVIF_CHILDREN;
1168  else
1169  callbackClear |= TVIF_CHILDREN;
1170  }
1171 
1172  if (tvItem->mask & TVIF_IMAGE)
1173  {
1174  item->iImage = tvItem->iImage;
1175 
1176  if (item->iImage == I_IMAGECALLBACK)
1177  callbackSet |= TVIF_IMAGE;
1178  else
1179  callbackClear |= TVIF_IMAGE;
1180  }
1181 
1182  if (tvItem->mask & TVIF_SELECTEDIMAGE)
1183  {
1184  item->iSelectedImage = tvItem->iSelectedImage;
1185 
1186  if (item->iSelectedImage == I_IMAGECALLBACK)
1187  callbackSet |= TVIF_SELECTEDIMAGE;
1188  else
1189  callbackClear |= TVIF_SELECTEDIMAGE;
1190  }
1191 
1192  if (tvItem->mask & TVIF_EXPANDEDIMAGE)
1193  {
1194  item->iExpandedImage = tvItem->iExpandedImage;
1195 
1196  if (item->iExpandedImage == I_IMAGECALLBACK)
1197  callbackSet |= TVIF_EXPANDEDIMAGE;
1198  else
1199  callbackClear |= TVIF_EXPANDEDIMAGE;
1200  }
1201 
1202  if (tvItem->mask & TVIF_PARAM)
1203  item->lParam = tvItem->lParam;
1204 
1205  /* If the application sets TVIF_INTEGRAL without
1206  * supplying a TVITEMEX structure, it's toast. */
1207  if (tvItem->mask & TVIF_INTEGRAL)
1208  item->iIntegral = tvItem->iIntegral;
1209 
1210  if (tvItem->mask & TVIF_STATE)
1211  {
1212  TRACE("prevstate 0x%x, state 0x%x, mask 0x%x\n", item->state, tvItem->state,
1213  tvItem->stateMask);
1214  item->state &= ~tvItem->stateMask;
1215  item->state |= (tvItem->state & tvItem->stateMask);
1216  }
1217 
1218  if (tvItem->mask & TVIF_STATEEX)
1219  {
1220  FIXME("New extended state: 0x%x\n", tvItem->uStateEx);
1221  }
1222 
1223  item->callbackMask |= callbackSet;
1224  item->callbackMask &= ~callbackClear;
1225 
1226  return TRUE;
1227 }
1228 
1229 /* Note that the new item is pre-zeroed. */
1230 static LRESULT
1232 {
1233  const TVITEMEXW *tvItem = &ptdi->u.itemex;
1234  HTREEITEM insertAfter;
1235  TREEVIEW_ITEM *newItem, *parentItem;
1236  BOOL bTextUpdated = FALSE;
1237 
1238  if (ptdi->hParent == TVI_ROOT || ptdi->hParent == 0)
1239  {
1240  parentItem = infoPtr->root;
1241  }
1242  else
1243  {
1244  parentItem = ptdi->hParent;
1245 
1246  if (!TREEVIEW_ValidItem(infoPtr, parentItem))
1247  {
1248  WARN("invalid parent %p\n", parentItem);
1249  return 0;
1250  }
1251  }
1252 
1253  insertAfter = ptdi->hInsertAfter;
1254 
1255  /* Validate this now for convenience. */
1256  switch ((DWORD_PTR)insertAfter)
1257  {
1258  case (DWORD_PTR)TVI_FIRST:
1259  case (DWORD_PTR)TVI_LAST:
1260  case (DWORD_PTR)TVI_SORT:
1261  break;
1262 
1263  default:
1264  if (!TREEVIEW_ValidItem(infoPtr, insertAfter) ||
1265  insertAfter->parent != parentItem)
1266  {
1267  WARN("invalid insert after %p\n", insertAfter);
1268  insertAfter = TVI_LAST;
1269  }
1270  }
1271 
1272  TRACE("parent %p position %p: %s\n", parentItem, insertAfter,
1273  (tvItem->mask & TVIF_TEXT)
1274  ? ((tvItem->pszText == LPSTR_TEXTCALLBACKW) ? "<callback>"
1275  : (isW ? debugstr_w(tvItem->pszText) : debugstr_a((LPSTR)tvItem->pszText)))
1276  : "<no label>");
1277 
1278  newItem = TREEVIEW_AllocateItem(infoPtr);
1279  if (newItem == NULL)
1280  return 0;
1281 
1282  newItem->parent = parentItem;
1283  newItem->iIntegral = 1;
1284  newItem->visibleOrder = -1;
1285 
1286  if (!TREEVIEW_DoSetItemT(infoPtr, newItem, tvItem, isW))
1287  return 0;
1288 
1289  /* After this point, nothing can fail. (Except for TVI_SORT.) */
1290 
1291  infoPtr->uNumItems++;
1292 
1293  switch ((DWORD_PTR)insertAfter)
1294  {
1295  case (DWORD_PTR)TVI_FIRST:
1296  {
1297  TREEVIEW_ITEM *originalFirst = parentItem->firstChild;
1298  TREEVIEW_InsertBefore(newItem, parentItem->firstChild, parentItem);
1299  if (infoPtr->firstVisible == originalFirst)
1300  TREEVIEW_SetFirstVisible(infoPtr, newItem, TRUE);
1301  }
1302  break;
1303 
1304  case (DWORD_PTR)TVI_LAST:
1305  TREEVIEW_InsertAfter(newItem, parentItem->lastChild, parentItem);
1306  break;
1307 
1308  /* hInsertAfter names a specific item we want to insert after */
1309  default:
1310  TREEVIEW_InsertAfter(newItem, insertAfter, insertAfter->parent);
1311  break;
1312 
1313  case (DWORD_PTR)TVI_SORT:
1314  {
1315  TREEVIEW_ITEM *aChild;
1316  TREEVIEW_ITEM *previousChild = NULL;
1317  TREEVIEW_ITEM *originalFirst = parentItem->firstChild;
1318  BOOL bItemInserted = FALSE;
1319 
1320  aChild = parentItem->firstChild;
1321 
1322  bTextUpdated = TRUE;
1323  TREEVIEW_UpdateDispInfo(infoPtr, newItem, TVIF_TEXT);
1324 
1325  /* Iterate the parent children to see where we fit in */
1326  while (aChild != NULL)
1327  {
1328  INT comp;
1329 
1330  TREEVIEW_UpdateDispInfo(infoPtr, aChild, TVIF_TEXT);
1331  comp = lstrcmpW(newItem->pszText, aChild->pszText);
1332 
1333  if (comp < 0) /* we are smaller than the current one */
1334  {
1335  TREEVIEW_InsertBefore(newItem, aChild, parentItem);
1336  if (infoPtr->firstVisible == originalFirst &&
1337  aChild == originalFirst)
1338  TREEVIEW_SetFirstVisible(infoPtr, newItem, TRUE);
1339  bItemInserted = TRUE;
1340  break;
1341  }
1342  else if (comp > 0) /* we are bigger than the current one */
1343  {
1344  previousChild = aChild;
1345 
1346  /* This will help us to exit if there is no more sibling */
1347  aChild = (aChild->nextSibling == 0)
1348  ? NULL
1349  : aChild->nextSibling;
1350 
1351  /* Look at the next item */
1352  continue;
1353  }
1354  else if (comp == 0)
1355  {
1356  /*
1357  * An item with this name is already existing, therefore,
1358  * we add after the one we found
1359  */
1360  TREEVIEW_InsertAfter(newItem, aChild, parentItem);
1361  bItemInserted = TRUE;
1362  break;
1363  }
1364  }
1365 
1366  /*
1367  * we reach the end of the child list and the item has not
1368  * yet been inserted, therefore, insert it after the last child.
1369  */
1370  if ((!bItemInserted) && (aChild == NULL))
1371  TREEVIEW_InsertAfter(newItem, previousChild, parentItem);
1372 
1373  break;
1374  }
1375  }
1376 
1377 
1378  TRACE("new item %p; parent %p, mask 0x%x\n", newItem,
1379  newItem->parent, tvItem->mask);
1380 
1381  newItem->iLevel = newItem->parent->iLevel + 1;
1382 
1383  if (newItem->parent->cChildren == 0)
1384  newItem->parent->cChildren = 1;
1385 
1386  if (infoPtr->dwStyle & TVS_CHECKBOXES)
1387  {
1388  if (STATEIMAGEINDEX(newItem->state) == 0)
1389  newItem->state |= INDEXTOSTATEIMAGEMASK(1);
1390  }
1391 
1392  if (infoPtr->firstVisible == NULL)
1393  infoPtr->firstVisible = newItem;
1394 
1395  TREEVIEW_VerifyTree(infoPtr);
1396 
1397  if (!infoPtr->bRedraw) return (LRESULT)newItem;
1398 
1399  if (parentItem == infoPtr->root ||
1400  (ISVISIBLE(parentItem) && parentItem->state & TVIS_EXPANDED))
1401  {
1403  TREEVIEW_ITEM *prev = TREEVIEW_GetPrevListItem(infoPtr, newItem);
1404 
1405  TREEVIEW_RecalculateVisibleOrder(infoPtr, prev);
1406  TREEVIEW_ComputeItemInternalMetrics(infoPtr, newItem);
1407 
1408  if (!bTextUpdated)
1409  TREEVIEW_UpdateDispInfo(infoPtr, newItem, TVIF_TEXT);
1410 
1411  TREEVIEW_ComputeTextWidth(infoPtr, newItem, 0);
1412  TREEVIEW_UpdateScrollBars(infoPtr);
1413  /*
1414  * if the item was inserted in a visible part of the tree,
1415  * invalidate it, as well as those after it
1416  */
1417  for (item = newItem;
1418  item != NULL;
1419  item = TREEVIEW_GetNextListItem(infoPtr, item))
1420  TREEVIEW_Invalidate(infoPtr, item);
1421  }
1422  else
1423  {
1424  /* refresh treeview if newItem is the first item inserted under parentItem */
1425  if (ISVISIBLE(parentItem) && newItem->prevSibling == newItem->nextSibling)
1426  {
1427  /* parent got '+' - update it */
1428  TREEVIEW_Invalidate(infoPtr, parentItem);
1429  }
1430  }
1431 
1432  return (LRESULT)newItem;
1433 }
1434 
1435 /* Item Deletion ************************************************************/
1436 static void
1438 
1439 static void
1441 {
1442  TREEVIEW_ITEM *kill = parentItem->firstChild;
1443 
1444  while (kill != NULL)
1445  {
1446  TREEVIEW_ITEM *next = kill->nextSibling;
1447 
1448  TREEVIEW_RemoveItem(infoPtr, kill);
1449 
1450  kill = next;
1451  }
1452 
1453  assert(parentItem->cChildren <= 0); /* I_CHILDRENCALLBACK or 0 */
1454  assert(parentItem->firstChild == NULL);
1455  assert(parentItem->lastChild == NULL);
1456 }
1457 
1458 static void
1460 {
1461  TREEVIEW_ITEM *parentItem;
1462 
1463  assert(item != NULL);
1464  assert(item->parent != NULL); /* i.e. it must not be the root */
1465 
1466  parentItem = item->parent;
1467 
1468  if (parentItem->firstChild == item)
1469  parentItem->firstChild = item->nextSibling;
1470 
1471  if (parentItem->lastChild == item)
1472  parentItem->lastChild = item->prevSibling;
1473 
1474  if (parentItem->firstChild == NULL && parentItem->lastChild == NULL
1475  && parentItem->cChildren > 0)
1476  parentItem->cChildren = 0;
1477 
1478  if (item->prevSibling)
1479  item->prevSibling->nextSibling = item->nextSibling;
1480 
1481  if (item->nextSibling)
1482  item->nextSibling->prevSibling = item->prevSibling;
1483 }
1484 
1485 static void
1487 {
1488  TRACE("%p, (%s)\n", item, TREEVIEW_ItemName(item));
1489 
1490  if (item->firstChild)
1491  TREEVIEW_RemoveAllChildren(infoPtr, item);
1492 
1494  TVIF_HANDLE | TVIF_PARAM, item, 0);
1495 
1496  TREEVIEW_UnlinkItem(item);
1497 
1498  infoPtr->uNumItems--;
1499 
1500  if (item->pszText != LPSTR_TEXTCALLBACKW)
1501  heap_free(item->pszText);
1502 
1503  TREEVIEW_FreeItem(infoPtr, item);
1504 }
1505 
1506 
1507 /* Empty out the tree. */
1508 static void
1510 {
1511  TREEVIEW_RemoveAllChildren(infoPtr, infoPtr->root);
1512 
1513  assert(infoPtr->uNumItems == 0); /* root isn't counted in uNumItems */
1514 }
1515 
1516 static LRESULT
1518 {
1519  TREEVIEW_ITEM *newSelection = NULL;
1520  TREEVIEW_ITEM *newFirstVisible = NULL;
1521  TREEVIEW_ITEM *parent, *prev = NULL;
1522  BOOL visible = FALSE;
1523 
1524  if (item == TVI_ROOT || !item)
1525  {
1526  TRACE("TVI_ROOT\n");
1527  parent = infoPtr->root;
1528  newSelection = NULL;
1529  visible = TRUE;
1530  TREEVIEW_RemoveTree(infoPtr);
1531  }
1532  else
1533  {
1534  if (!TREEVIEW_ValidItem(infoPtr, item))
1535  return FALSE;
1536 
1537  TRACE("%p (%s)\n", item, TREEVIEW_ItemName(item));
1538  parent = item->parent;
1539 
1540  if (ISVISIBLE(item))
1541  {
1542  prev = TREEVIEW_GetPrevListItem(infoPtr, item);
1543  visible = TRUE;
1544  }
1545 
1546  if (infoPtr->selectedItem != NULL
1547  && (item == infoPtr->selectedItem
1548  || TREEVIEW_IsChildOf(item, infoPtr->selectedItem)))
1549  {
1550  if (item->nextSibling)
1551  newSelection = item->nextSibling;
1552  else if (item->parent != infoPtr->root)
1553  newSelection = item->parent;
1554  else
1555  newSelection = item->prevSibling;
1556  TRACE("newSelection = %p\n", newSelection);
1557  }
1558 
1559  if (infoPtr->firstVisible == item)
1560  {
1561  visible = TRUE;
1562  if (item->nextSibling)
1563  newFirstVisible = item->nextSibling;
1564  else if (item->prevSibling)
1565  newFirstVisible = item->prevSibling;
1566  else if (item->parent != infoPtr->root)
1567  newFirstVisible = item->parent;
1568  TREEVIEW_SetFirstVisible(infoPtr, NULL, TRUE);
1569  }
1570  else
1571  newFirstVisible = infoPtr->firstVisible;
1572 
1573  TREEVIEW_RemoveItem(infoPtr, item);
1574  }
1575 
1576  /* Don't change if somebody else already has (infoPtr->selectedItem is cleared by FreeItem). */
1577  if (!infoPtr->selectedItem && newSelection)
1578  {
1579  if (TREEVIEW_ValidItem(infoPtr, newSelection))
1580  TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, newSelection, TVC_UNKNOWN);
1581  }
1582 
1583  /* Validate insertMark dropItem.
1584  * hotItem ??? - used for comparison only.
1585  */
1586  if (!TREEVIEW_ValidItem(infoPtr, infoPtr->insertMarkItem))
1587  infoPtr->insertMarkItem = 0;
1588 
1589  if (!TREEVIEW_ValidItem(infoPtr, infoPtr->dropItem))
1590  infoPtr->dropItem = 0;
1591 
1592  if (!TREEVIEW_ValidItem(infoPtr, newFirstVisible))
1593  newFirstVisible = infoPtr->root->firstChild;
1594 
1595  TREEVIEW_VerifyTree(infoPtr);
1596 
1597  if (visible)
1598  TREEVIEW_SetFirstVisible(infoPtr, newFirstVisible, TRUE);
1599 
1600  if (!infoPtr->bRedraw) return TRUE;
1601 
1602  if (visible)
1603  {
1604  TREEVIEW_RecalculateVisibleOrder(infoPtr, prev);
1605  TREEVIEW_UpdateScrollBars(infoPtr);
1606  TREEVIEW_Invalidate(infoPtr, NULL);
1607  }
1608  else if (ISVISIBLE(parent) && !TREEVIEW_HasChildren(infoPtr, parent))
1609  {
1610  /* parent lost '+/-' - update it */
1611  TREEVIEW_Invalidate(infoPtr, parent);
1612  }
1613 
1614  return TRUE;
1615 }
1616 
1617 
1618 /* Get/Set Messages *********************************************************/
1619 static LRESULT
1621 {
1622  infoPtr->bRedraw = wParam != 0;
1623 
1624  if (infoPtr->bRedraw)
1625  {
1626  TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
1628  TREEVIEW_UpdateScrollBars(infoPtr);
1629  TREEVIEW_Invalidate(infoPtr, NULL);
1630  }
1631  return 0;
1632 }
1633 
1634 static LRESULT
1636 {
1637  TRACE("\n");
1638  return infoPtr->uIndent;
1639 }
1640 
1641 static LRESULT
1643 {
1644  TRACE("\n");
1645 
1646  if (newIndent < MINIMUM_INDENT)
1647  newIndent = MINIMUM_INDENT;
1648 
1649  if (infoPtr->uIndent != newIndent)
1650  {
1651  infoPtr->uIndent = newIndent;
1652  TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
1653  TREEVIEW_UpdateScrollBars(infoPtr);
1654  TREEVIEW_Invalidate(infoPtr, NULL);
1655  }
1656 
1657  return 0;
1658 }
1659 
1660 
1661 static LRESULT
1663 {
1664  TRACE("\n");
1665  return (LRESULT)infoPtr->hwndToolTip;
1666 }
1667 
1668 static LRESULT
1670 {
1671  HWND prevToolTip;
1672 
1673  TRACE("\n");
1674  prevToolTip = infoPtr->hwndToolTip;
1675  infoPtr->hwndToolTip = hwndTT;
1676 
1677  return (LRESULT)prevToolTip;
1678 }
1679 
1680 static LRESULT
1682 {
1683  BOOL rc = infoPtr->bNtfUnicode;
1684  infoPtr->bNtfUnicode = fUnicode;
1685  return rc;
1686 }
1687 
1688 static LRESULT
1690 {
1691  return infoPtr->bNtfUnicode;
1692 }
1693 
1694 static LRESULT
1696 {
1697  return infoPtr->uScrollTime;
1698 }
1699 
1700 static LRESULT
1702 {
1703  UINT uOldScrollTime = infoPtr->uScrollTime;
1704 
1705  infoPtr->uScrollTime = min(uScrollTime, 100);
1706 
1707  return uOldScrollTime;
1708 }
1709 
1710 
1711 static LRESULT
1713 {
1714  TRACE("\n");
1715 
1716  switch (wParam)
1717  {
1718  case TVSIL_NORMAL:
1719  return (LRESULT)infoPtr->himlNormal;
1720 
1721  case TVSIL_STATE:
1722  return (LRESULT)infoPtr->himlState;
1723 
1724  default:
1725  return 0;
1726  }
1727 }
1728 
1729 #define TVHEIGHT_MIN 16
1730 #define TVHEIGHT_FONT_ADJUST 3 /* 2 for focus border + 1 for margin some apps assume */
1731 
1732 /* Compute the natural height for items. */
1733 static UINT
1735 {
1736  TEXTMETRICW tm;
1737  HDC hdc = GetDC(0);
1738  HFONT hOldFont = SelectObject(hdc, infoPtr->hFont);
1739  UINT height;
1740 
1741  /* Height is the maximum of:
1742  * 16 (a hack because our fonts are tiny), and
1743  * The text height + border & margin, and
1744  * The size of the normal image list
1745  */
1746  GetTextMetricsW(hdc, &tm);
1747  SelectObject(hdc, hOldFont);
1748  ReleaseDC(0, hdc);
1749 
1750  height = TVHEIGHT_MIN;
1751  if (height < tm.tmHeight + tm.tmExternalLeading + TVHEIGHT_FONT_ADJUST)
1752  height = tm.tmHeight + tm.tmExternalLeading + TVHEIGHT_FONT_ADJUST;
1753  if (height < infoPtr->normalImageHeight)
1754  height = infoPtr->normalImageHeight;
1755 
1756  /* Round down, unless we support odd ("non even") heights. */
1757  if (!(infoPtr->dwStyle & TVS_NONEVENHEIGHT))
1758  height &= ~1;
1759 
1760  return height;
1761 }
1762 
1763 static LRESULT
1765 {
1766  HIMAGELIST himlOld = 0;
1767  int oldWidth = infoPtr->normalImageWidth;
1768  int oldHeight = infoPtr->normalImageHeight;
1769 
1770  TRACE("%u,%p\n", type, himlNew);
1771 
1772  switch (type)
1773  {
1774  case TVSIL_NORMAL:
1775  himlOld = infoPtr->himlNormal;
1776  infoPtr->himlNormal = himlNew;
1777 
1778  if (himlNew)
1779  ImageList_GetIconSize(himlNew, &infoPtr->normalImageWidth,
1780  &infoPtr->normalImageHeight);
1781  else
1782  {
1783  infoPtr->normalImageWidth = 0;
1784  infoPtr->normalImageHeight = 0;
1785  }
1786 
1787  break;
1788 
1789  case TVSIL_STATE:
1790  himlOld = infoPtr->himlState;
1791  infoPtr->himlState = himlNew;
1792 
1793  if (himlNew)
1794  ImageList_GetIconSize(himlNew, &infoPtr->stateImageWidth,
1795  &infoPtr->stateImageHeight);
1796  else
1797  {
1798  infoPtr->stateImageWidth = 0;
1799  infoPtr->stateImageHeight = 0;
1800  }
1801 
1802  break;
1803 
1804  default:
1805  ERR("unknown imagelist type %u\n", type);
1806  }
1807 
1808  if (oldWidth != infoPtr->normalImageWidth ||
1809  oldHeight != infoPtr->normalImageHeight)
1810  {
1811  BOOL bRecalcVisible = FALSE;
1812 
1813  if (oldHeight != infoPtr->normalImageHeight &&
1814  !infoPtr->bHeightSet)
1815  {
1816  infoPtr->uItemHeight = TREEVIEW_NaturalHeight(infoPtr);
1817  bRecalcVisible = TRUE;
1818  }
1819 
1820  if (infoPtr->normalImageWidth > MINIMUM_INDENT &&
1821  infoPtr->normalImageWidth != infoPtr->uIndent)
1822  {
1823  infoPtr->uIndent = infoPtr->normalImageWidth;
1824  bRecalcVisible = TRUE;
1825  }
1826 
1827  if (bRecalcVisible)
1829 
1830  TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
1831  TREEVIEW_UpdateScrollBars(infoPtr);
1832  }
1833 
1834  TREEVIEW_Invalidate(infoPtr, NULL);
1835 
1836  return (LRESULT)himlOld;
1837 }
1838 
1839 static LRESULT
1841 {
1842  INT prevHeight = infoPtr->uItemHeight;
1843 
1844  TRACE("new=%d, old=%d\n", newHeight, prevHeight);
1845  if (newHeight == -1)
1846  {
1847  infoPtr->uItemHeight = TREEVIEW_NaturalHeight(infoPtr);
1848  infoPtr->bHeightSet = FALSE;
1849  }
1850  else
1851  {
1852  if (newHeight == 0) newHeight = 1;
1853  infoPtr->uItemHeight = newHeight;
1854  infoPtr->bHeightSet = TRUE;
1855  }
1856 
1857  /* Round down, unless we support odd ("non even") heights. */
1858  if (!(infoPtr->dwStyle & TVS_NONEVENHEIGHT) && infoPtr->uItemHeight != 1)
1859  {
1860  infoPtr->uItemHeight &= ~1;
1861  TRACE("after rounding=%d\n", infoPtr->uItemHeight);
1862  }
1863 
1864  if (infoPtr->uItemHeight != prevHeight)
1865  {
1867  TREEVIEW_UpdateScrollBars(infoPtr);
1868  TREEVIEW_Invalidate(infoPtr, NULL);
1869  }
1870 
1871  return prevHeight;
1872 }
1873 
1874 static LRESULT
1876 {
1877  TRACE("\n");
1878  return infoPtr->uItemHeight;
1879 }
1880 
1881 
1882 static LRESULT
1884 {
1885  TRACE("%p\n", infoPtr->hFont);
1886  return (LRESULT)infoPtr->hFont;
1887 }
1888 
1889 
1890 static INT CALLBACK
1892 {
1893  (void)unused;
1894 
1895  ((TREEVIEW_ITEM *)pItem)->textWidth = 0;
1896 
1897  return 1;
1898 }
1899 
1900 static LRESULT
1902 {
1903  UINT uHeight = infoPtr->uItemHeight;
1904 
1905  TRACE("%p %i\n", hFont, bRedraw);
1906 
1907  infoPtr->hFont = hFont ? hFont : infoPtr->hDefaultFont;
1908 
1909  DeleteObject(infoPtr->hBoldFont);
1910  DeleteObject(infoPtr->hUnderlineFont);
1911  DeleteObject(infoPtr->hBoldUnderlineFont);
1912  infoPtr->hBoldFont = TREEVIEW_CreateBoldFont(infoPtr->hFont);
1913  infoPtr->hUnderlineFont = TREEVIEW_CreateUnderlineFont(infoPtr->hFont);
1915 
1916  if (!infoPtr->bHeightSet)
1917  infoPtr->uItemHeight = TREEVIEW_NaturalHeight(infoPtr);
1918 
1919  if (uHeight != infoPtr->uItemHeight)
1921 
1923 
1924  TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
1925  TREEVIEW_UpdateScrollBars(infoPtr);
1926 
1927  if (bRedraw)
1928  TREEVIEW_Invalidate(infoPtr, NULL);
1929 
1930  return 0;
1931 }
1932 
1933 
1934 static LRESULT
1936 {
1937  TRACE("\n");
1938  return (LRESULT)infoPtr->clrLine;
1939 }
1940 
1941 static LRESULT
1943 {
1944  COLORREF prevColor = infoPtr->clrLine;
1945 
1946  TRACE("\n");
1947  infoPtr->clrLine = color;
1948  return (LRESULT)prevColor;
1949 }
1950 
1951 
1952 static LRESULT
1954 {
1955  TRACE("\n");
1956  return (LRESULT)infoPtr->clrText;
1957 }
1958 
1959 static LRESULT
1961 {
1962  COLORREF prevColor = infoPtr->clrText;
1963 
1964  TRACE("\n");
1965  infoPtr->clrText = color;
1966 
1967  if (infoPtr->clrText != prevColor)
1968  TREEVIEW_Invalidate(infoPtr, NULL);
1969 
1970  return (LRESULT)prevColor;
1971 }
1972 
1973 
1974 static LRESULT
1976 {
1977  TRACE("\n");
1978  return (LRESULT)infoPtr->clrBk;
1979 }
1980 
1981 static LRESULT
1983 {
1984  COLORREF prevColor = infoPtr->clrBk;
1985 
1986  TRACE("\n");
1987  infoPtr->clrBk = newColor;
1988 
1989  if (newColor != prevColor)
1990  TREEVIEW_Invalidate(infoPtr, NULL);
1991 
1992  return (LRESULT)prevColor;
1993 }
1994 
1995 
1996 static LRESULT
1998 {
1999  TRACE("\n");
2000  return (LRESULT)infoPtr->clrInsertMark;
2001 }
2002 
2003 static LRESULT
2005 {
2006  COLORREF prevColor = infoPtr->clrInsertMark;
2007 
2008  TRACE("0x%08x\n", color);
2009  infoPtr->clrInsertMark = color;
2010 
2011  return (LRESULT)prevColor;
2012 }
2013 
2014 
2015 static LRESULT
2017 {
2018  TRACE("%d %p\n", wParam, item);
2019 
2020  if (!TREEVIEW_ValidItem(infoPtr, item))
2021  return 0;
2022 
2023  infoPtr->insertBeforeorAfter = wParam;
2024  infoPtr->insertMarkItem = item;
2025 
2026  TREEVIEW_Invalidate(infoPtr, NULL);
2027 
2028  return 1;
2029 }
2030 
2031 
2032 /************************************************************************
2033  * Some serious braindamage here. lParam is a pointer to both the
2034  * input HTREEITEM and the output RECT.
2035  */
2036 static LRESULT
2037 TREEVIEW_GetItemRect(const TREEVIEW_INFO *infoPtr, BOOL fTextRect, LPRECT lpRect)
2038 {
2040  const HTREEITEM *pItem = (HTREEITEM *)lpRect;
2041 
2042  TRACE("\n");
2043 
2044  if (pItem == NULL)
2045  return FALSE;
2046 
2047  item = *pItem;
2048  if (!TREEVIEW_ValidItem(infoPtr, item) || !ISVISIBLE(item))
2049  return FALSE;
2050 
2051  /*
2052  * If wParam is TRUE return the text size otherwise return
2053  * the whole item size
2054  */
2055  if (fTextRect)
2056  {
2057  /* Windows does not send TVN_GETDISPINFO here. */
2058 
2059  lpRect->top = item->rect.top;
2060  lpRect->bottom = item->rect.bottom;
2061 
2062  lpRect->left = item->textOffset;
2063  if (!item->textWidth)
2064  TREEVIEW_ComputeTextWidth(infoPtr, item, 0);
2065 
2066  lpRect->right = item->textOffset + item->textWidth + 4;
2067  }
2068  else
2069  {
2070  *lpRect = item->rect;
2071  }
2072 
2073  TRACE("%s [%s]\n", fTextRect ? "text" : "item", wine_dbgstr_rect(lpRect));
2074 
2075  return TRUE;
2076 }
2077 
2078 static inline LRESULT
2080 {
2081  /* Surprise! This does not take integral height into account. */
2082  TRACE("client=%d, item=%d\n", infoPtr->clientHeight, infoPtr->uItemHeight);
2083  return infoPtr->clientHeight / infoPtr->uItemHeight;
2084 }
2085 
2086 
2087 static LRESULT
2089 {
2090  TREEVIEW_ITEM *item = tvItem->hItem;
2091 
2092  if (!TREEVIEW_ValidItem(infoPtr, item))
2093  {
2094  BOOL valid_item = FALSE;
2095  if (!item) return FALSE;
2096 
2097  __TRY
2098  {
2099  infoPtr = item->infoPtr;
2100  TRACE("got item from different tree %p, called from %p\n", item->infoPtr, infoPtr);
2101  valid_item = TREEVIEW_ValidItem(infoPtr, item);
2102  }
2104  {
2105  }
2106  __ENDTRY
2107  if (!valid_item) return FALSE;
2108  }
2109 
2110  TREEVIEW_UpdateDispInfo(infoPtr, item, tvItem->mask);
2111 
2112  if (tvItem->mask & TVIF_CHILDREN)
2113  {
2114  if (item->cChildren==I_CHILDRENCALLBACK)
2115  FIXME("I_CHILDRENCALLBACK not supported\n");
2116  tvItem->cChildren = item->cChildren;
2117  }
2118 
2119  if (tvItem->mask & TVIF_HANDLE)
2120  tvItem->hItem = item;
2121 
2122  if (tvItem->mask & TVIF_IMAGE)
2123  tvItem->iImage = item->iImage;
2124 
2125  if (tvItem->mask & TVIF_INTEGRAL)
2126  tvItem->iIntegral = item->iIntegral;
2127 
2128  /* undocumented: (mask & TVIF_PARAM) ignored and lParam is always set */
2129  tvItem->lParam = item->lParam;
2130 
2131  if (tvItem->mask & TVIF_SELECTEDIMAGE)
2132  tvItem->iSelectedImage = item->iSelectedImage;
2133 
2134  if (tvItem->mask & TVIF_EXPANDEDIMAGE)
2135  tvItem->iExpandedImage = item->iExpandedImage;
2136 
2137  /* undocumented: stateMask and (state & TVIF_STATE) ignored, so state is always set */
2138  tvItem->state = item->state;
2139 
2140  if (tvItem->mask & TVIF_TEXT)
2141  {
2142  if (item->pszText == NULL)
2143  {
2144  if (tvItem->cchTextMax > 0)
2145  tvItem->pszText[0] = '\0';
2146  }
2147  else if (isW)
2148  {
2149  if (item->pszText == LPSTR_TEXTCALLBACKW)
2150  {
2151  tvItem->pszText = LPSTR_TEXTCALLBACKW;
2152  FIXME(" GetItem called with LPSTR_TEXTCALLBACK\n");
2153  }
2154  else
2155  {
2156  lstrcpynW(tvItem->pszText, item->pszText, tvItem->cchTextMax);
2157  }
2158  }
2159  else
2160  {
2161  if (item->pszText == LPSTR_TEXTCALLBACKW)
2162  {
2163  tvItem->pszText = (LPWSTR)LPSTR_TEXTCALLBACKA;
2164  FIXME(" GetItem called with LPSTR_TEXTCALLBACK\n");
2165  }
2166  else
2167  {
2168  WideCharToMultiByte(CP_ACP, 0, item->pszText, -1,
2169  (LPSTR)tvItem->pszText, tvItem->cchTextMax, NULL, NULL);
2170  }
2171  }
2172  }
2173 
2174  if (tvItem->mask & TVIF_STATEEX)
2175  {
2176  FIXME("Extended item state not supported, returning 0.\n");
2177  tvItem->uStateEx = 0;
2178  }
2179 
2180  TRACE("item <%p>, txt %p, img %d, mask 0x%x\n",
2181  item, tvItem->pszText, tvItem->iImage, tvItem->mask);
2182 
2183  return TRUE;
2184 }
2185 
2186 /* Beware MSDN Library Visual Studio 6.0. It says -1 on failure, 0 on success,
2187  * which is wrong. */
2188 static LRESULT
2190 {
2192  TREEVIEW_ITEM originalItem;
2193 
2194  item = tvItem->hItem;
2195 
2196  TRACE("item %d, mask 0x%x\n", TREEVIEW_GetItemIndex(infoPtr, item),
2197  tvItem->mask);
2198 
2199  if (!TREEVIEW_ValidItem(infoPtr, item))
2200  return FALSE;
2201 
2202  /* store the original item values */
2203  originalItem = *item;
2204 
2205  if (!TREEVIEW_DoSetItemT(infoPtr, item, tvItem, isW))
2206  return FALSE;
2207 
2208  /* If the text or TVIS_BOLD was changed, and it is visible, recalculate. */
2209  if ((tvItem->mask & TVIF_TEXT
2210  || (tvItem->mask & TVIF_STATE && tvItem->stateMask & TVIS_BOLD))
2211  && ISVISIBLE(item))
2212  {
2213  TREEVIEW_UpdateDispInfo(infoPtr, item, TVIF_TEXT);
2214  TREEVIEW_ComputeTextWidth(infoPtr, item, 0);
2215  }
2216 
2217  if (tvItem->mask != 0 && ISVISIBLE(item))
2218  {
2219  /* The refresh updates everything, but we can't wait until then. */
2220  TREEVIEW_ComputeItemInternalMetrics(infoPtr, item);
2221 
2222  /* if any of the item's values changed and it's not a callback, redraw the item */
2223  if (item_changed(&originalItem, item, tvItem))
2224  {
2225  if (tvItem->mask & TVIF_INTEGRAL)
2226  {
2227  TREEVIEW_RecalculateVisibleOrder(infoPtr, item);
2228  TREEVIEW_UpdateScrollBars(infoPtr);
2229 
2230  TREEVIEW_Invalidate(infoPtr, NULL);
2231  }
2232  else
2233  {
2234  TREEVIEW_UpdateScrollBars(infoPtr);
2235  TREEVIEW_Invalidate(infoPtr, item);
2236  }
2237  }
2238  }
2239 
2240  return TRUE;
2241 }
2242 
2243 static LRESULT
2245 {
2246  TRACE("\n");
2247 
2248  if (!item || !TREEVIEW_ValidItem(infoPtr, item))
2249  return 0;
2250 
2251  return (item->state & mask);
2252 }
2253 
2254 static LRESULT
2256 {
2257  TREEVIEW_ITEM *retval;
2258 
2259  retval = 0;
2260 
2261  /* handle all the global data here */
2262  switch (which)
2263  {
2264  case TVGN_CHILD: /* Special case: child of 0 is root */
2265  if (item)
2266  break;
2267  /* fall through */
2268  case TVGN_ROOT:
2269  retval = infoPtr->root->firstChild;
2270  break;
2271 
2272  case TVGN_CARET:
2273  retval = infoPtr->selectedItem;
2274  break;
2275 
2276  case TVGN_FIRSTVISIBLE:
2277  retval = infoPtr->firstVisible;
2278  break;
2279 
2280  case TVGN_DROPHILITE:
2281  retval = infoPtr->dropItem;
2282  break;
2283 
2284  case TVGN_LASTVISIBLE:
2285  retval = TREEVIEW_GetLastListItem(infoPtr, infoPtr->root);
2286  break;
2287  }
2288 
2289  if (retval)
2290  {
2291  TRACE("flags:0x%x, returns %p\n", which, retval);
2292  return (LRESULT)retval;
2293  }
2294 
2295  if (item == TVI_ROOT) item = infoPtr->root;
2296 
2297  if (!TREEVIEW_ValidItem(infoPtr, item))
2298  return FALSE;
2299 
2300  switch (which)
2301  {
2302  case TVGN_NEXT:
2303  retval = item->nextSibling;
2304  break;
2305  case TVGN_PREVIOUS:
2306  retval = item->prevSibling;
2307  break;
2308  case TVGN_PARENT:
2309  retval = (item->parent != infoPtr->root) ? item->parent : NULL;
2310  break;
2311  case TVGN_CHILD:
2312  retval = item->firstChild;
2313  break;
2314  case TVGN_NEXTVISIBLE:
2315  retval = TREEVIEW_GetNextListItem(infoPtr, item);
2316  break;
2317  case TVGN_PREVIOUSVISIBLE:
2318  retval = TREEVIEW_GetPrevListItem(infoPtr, item);
2319  break;
2320  default:
2321  TRACE("Unknown msg 0x%x, item %p\n", which, item);
2322  break;
2323  }
2324 
2325  TRACE("flags: 0x%x, item %p;returns %p\n", which, item, retval);
2326  return (LRESULT)retval;
2327 }
2328 
2329 
2330 static LRESULT
2332 {
2333  TRACE(" %d\n", infoPtr->uNumItems);
2334  return (LRESULT)infoPtr->uNumItems;
2335 }
2336 
2337 static VOID
2339 {
2340  if (infoPtr->dwStyle & TVS_CHECKBOXES)
2341  {
2342  static const unsigned int state_table[] = { 0, 2, 1 };
2343 
2344  unsigned int state;
2345 
2346  state = STATEIMAGEINDEX(item->state);
2347  TRACE("state: 0x%x\n", state);
2348  item->state &= ~TVIS_STATEIMAGEMASK;
2349 
2350  if (state < 3)
2351  state = state_table[state];
2352 
2353  item->state |= INDEXTOSTATEIMAGEMASK(state);
2354 
2355  TRACE("state: 0x%x\n", state);
2356  TREEVIEW_Invalidate(infoPtr, item);
2357  }
2358 }
2359 
2360 
2361 /* Painting *************************************************************/
2362 
2363 /* Draw the lines and expand button for an item. Also draws one section
2364  * of the line from item's parent to item's parent's next sibling. */
2365 static void
2367 {
2368  LONG centerx, centery;
2369  BOOL lar = ((infoPtr->dwStyle
2371  > TVS_LINESATROOT);
2372  HBRUSH hbr, hbrOld;
2373  COLORREF clrBk = GETBKCOLOR(infoPtr->clrBk);
2374 
2375  if (!lar && item->iLevel == 0)
2376  return;
2377 
2378  hbr = CreateSolidBrush(clrBk);
2379  hbrOld = SelectObject(hdc, hbr);
2380 
2381  centerx = (item->linesOffset + item->stateOffset) / 2;
2382  centery = (item->rect.top + item->rect.bottom) / 2;
2383 
2384  if (infoPtr->dwStyle & TVS_HASLINES)
2385  {
2386  HPEN hOldPen, hNewPen;
2387  HTREEITEM parent;
2388  LOGBRUSH lb;
2389 
2390  /* Get a dotted grey pen */
2391  lb.lbStyle = BS_SOLID;
2392  lb.lbColor = GETLINECOLOR(infoPtr->clrLine);
2393  hNewPen = ExtCreatePen(PS_COSMETIC|PS_ALTERNATE, 1, &lb, 0, NULL);
2394  hOldPen = SelectObject(hdc, hNewPen);
2395 
2396  /* Make sure the center is on a dot (using +2 instead
2397  * of +1 gives us pixel-by-pixel compat with native) */
2398  centery = (centery + 2) & ~1;
2399 
2400  MoveToEx(hdc, item->stateOffset, centery, NULL);
2401  LineTo(hdc, centerx - 1, centery);
2402 
2403  if (item->prevSibling || item->parent != infoPtr->root)
2404  {
2405  MoveToEx(hdc, centerx, item->rect.top, NULL);
2406  LineTo(hdc, centerx, centery);
2407  }
2408 
2409  if (item->nextSibling)
2410  {
2411  MoveToEx(hdc, centerx, centery, NULL);
2412  LineTo(hdc, centerx, item->rect.bottom + 1);
2413  }
2414 
2415  /* Draw the line from our parent to its next sibling. */
2416  parent = item->parent;
2417  while (parent != infoPtr->root)
2418  {
2419  int pcenterx = (parent->linesOffset + parent->stateOffset) / 2;
2420 
2421  if (parent->nextSibling
2422  /* skip top-levels unless TVS_LINESATROOT */
2423  && parent->stateOffset > parent->linesOffset)
2424  {
2425  MoveToEx(hdc, pcenterx, item->rect.top, NULL);
2426  LineTo(hdc, pcenterx, item->rect.bottom + 1);
2427  }
2428 
2429  parent = parent->parent;
2430  }
2431 
2432  SelectObject(hdc, hOldPen);
2433  DeleteObject(hNewPen);
2434  }
2435 
2436  /*
2437  * Display the (+/-) signs
2438  */
2439 
2440  if (infoPtr->dwStyle & TVS_HASBUTTONS)
2441  {
2442  if (item->cChildren)
2443  {
2444  HTHEME theme = GetWindowTheme(infoPtr->hwnd);
2445  if (theme)
2446  {
2447  RECT glyphRect = item->rect;
2448  glyphRect.left = item->linesOffset;
2449  glyphRect.right = item->stateOffset;
2450  DrawThemeBackground (theme, hdc, TVP_GLYPH,
2452  &glyphRect, NULL);
2453  }
2454  else
2455  {
2456  LONG height = item->rect.bottom - item->rect.top;
2457  LONG width = item->stateOffset - item->linesOffset;
2458  LONG rectsize = min(height, width) / 4;
2459  /* plussize = ceil(rectsize * 3/4) */
2460  LONG plussize = (rectsize + 1) * 3 / 4;
2461 
2462  HPEN new_pen = CreatePen(PS_SOLID, 0, GETLINECOLOR(infoPtr->clrLine));
2463  HPEN old_pen = SelectObject(hdc, new_pen);
2464 
2465  Rectangle(hdc, centerx - rectsize - 1, centery - rectsize - 1,
2466  centerx + rectsize + 2, centery + rectsize + 2);
2467 
2468  SelectObject(hdc, old_pen);
2469  DeleteObject(new_pen);
2470 
2471  /* draw +/- signs with current text color */
2472  new_pen = CreatePen(PS_SOLID, 0, GETTXTCOLOR(infoPtr->clrText));
2473  old_pen = SelectObject(hdc, new_pen);
2474 
2475  if (height < 18 || width < 18)
2476  {
2477  MoveToEx(hdc, centerx - plussize + 1, centery, NULL);
2478  LineTo(hdc, centerx + plussize, centery);
2479 
2480  if (!(item->state & TVIS_EXPANDED) ||
2481  (item->state & TVIS_EXPANDPARTIAL))
2482  {
2483  MoveToEx(hdc, centerx, centery - plussize + 1, NULL);
2484  LineTo(hdc, centerx, centery + plussize);
2485  }
2486  }
2487  else
2488  {
2489  Rectangle(hdc, centerx - plussize + 1, centery - 1,
2490  centerx + plussize, centery + 2);
2491 
2492  if (!(item->state & TVIS_EXPANDED) ||
2493  (item->state & TVIS_EXPANDPARTIAL))
2494  {
2495  Rectangle(hdc, centerx - 1, centery - plussize + 1,
2496  centerx + 2, centery + plussize);
2497  SetPixel(hdc, centerx - 1, centery, clrBk);
2498  SetPixel(hdc, centerx + 1, centery, clrBk);
2499  }
2500  }
2501 
2502  SelectObject(hdc, old_pen);
2503  DeleteObject(new_pen);
2504  }
2505  }
2506  }
2507  SelectObject(hdc, hbrOld);
2508  DeleteObject(hbr);
2509 }
2510 
2511 static void
2513 {
2514  INT cditem;
2515  HFONT hOldFont;
2516  COLORREF oldTextColor, oldTextBkColor;
2517  int centery;
2518  BOOL inFocus = (GetFocus() == infoPtr->hwnd);
2519  NMTVCUSTOMDRAW nmcdhdr;
2520 
2522 
2523  /* - If item is drop target or it is selected and window is in focus -
2524  * use blue background (COLOR_HIGHLIGHT).
2525  * - If item is selected, window is not in focus, but it has style
2526  * TVS_SHOWSELALWAYS - use grey background (COLOR_BTNFACE)
2527  * - Otherwise - use background color
2528  */
2529  if ((item->state & TVIS_DROPHILITED) || ((item == infoPtr->focusedItem) && !(item->state & TVIS_SELECTED)) ||
2530  ((item->state & TVIS_SELECTED) && (!infoPtr->focusedItem || item == infoPtr->focusedItem) &&
2531  (inFocus || (infoPtr->dwStyle & TVS_SHOWSELALWAYS))))
2532  {
2533  if ((item->state & TVIS_DROPHILITED) || inFocus)
2534  {
2537  }
2538  else
2539  {
2541  nmcdhdr.clrText = GETTXTCOLOR(infoPtr->clrText);
2542  }
2543  }
2544  else
2545  {
2546  nmcdhdr.clrTextBk = GETBKCOLOR(infoPtr->clrBk);
2547  if ((infoPtr->dwStyle & TVS_TRACKSELECT) && (item == infoPtr->hotItem))
2549  else
2550  nmcdhdr.clrText = GETTXTCOLOR(infoPtr->clrText);
2551  }
2552 
2553  hOldFont = SelectObject(hdc, TREEVIEW_FontForItem(infoPtr, item));
2554  oldTextColor = SetTextColor(hdc, nmcdhdr.clrText);
2555  oldTextBkColor = SetBkColor(hdc, nmcdhdr.clrTextBk);
2556 
2557  /* The custom draw handler can query the text rectangle,
2558  * so get ready. */
2559  /* should already be known, set to 0 when changed */
2560  if (!item->textWidth)
2561  TREEVIEW_ComputeTextWidth(infoPtr, item, hdc);
2562 
2563  cditem = 0;
2564 
2565  if (infoPtr->cdmode & CDRF_NOTIFYITEMDRAW)
2566  {
2568  (infoPtr, hdc, item, CDDS_ITEMPREPAINT, &nmcdhdr);
2569  TRACE("prepaint:cditem-app returns 0x%x\n", cditem);
2570 
2571  if (cditem & CDRF_SKIPDEFAULT)
2572  {
2573  SelectObject(hdc, hOldFont);
2574  return;
2575  }
2576  }
2577 
2578  if (cditem & CDRF_NEWFONT)
2579  TREEVIEW_ComputeTextWidth(infoPtr, item, hdc);
2580 
2581  if (TREEVIEW_IsFullRowSelect(infoPtr))
2582  {
2583  HBRUSH brush = CreateSolidBrush(nmcdhdr.clrTextBk);
2584  FillRect(hdc, &item->rect, brush);
2585  DeleteObject(brush);
2586  }
2587 
2588  TREEVIEW_DrawItemLines(infoPtr, hdc, item);
2589 
2590  /* reset colors. Custom draw handler can change them */
2591  SetTextColor(hdc, nmcdhdr.clrText);
2592  SetBkColor(hdc, nmcdhdr.clrTextBk);
2593 
2594  centery = (item->rect.top + item->rect.bottom) / 2;
2595 
2596  /*
2597  * Display the images associated with this item
2598  */
2599  {
2600  INT imageIndex;
2601 
2602  /* State images are displayed to the left of the Normal image
2603  * image number is in state; zero should be `display no image'.
2604  */
2605  imageIndex = STATEIMAGEINDEX(item->state);
2606 
2607  if (infoPtr->himlState && imageIndex)
2608  {
2609  ImageList_Draw(infoPtr->himlState, imageIndex, hdc,
2610  item->stateOffset,
2611  centery - infoPtr->stateImageHeight / 2,
2612  ILD_NORMAL);
2613  }
2614 
2615  /* Now, draw the normal image; can be either selected,
2616  * non-selected or expanded image.
2617  */
2618 
2619  if ((item->state & TVIS_SELECTED) && (item->iSelectedImage >= 0))
2620  {
2621  /* The item is currently selected */
2622  imageIndex = item->iSelectedImage;
2623  }
2624  else if ((item->state & TVIS_EXPANDED) && (item->iExpandedImage != (WORD)I_IMAGENONE))
2625  {
2626  /* The item is currently not selected but expanded */
2627  imageIndex = item->iExpandedImage;
2628  }
2629  else
2630  {
2631  /* The item is not selected and not expanded */
2632  imageIndex = item->iImage;
2633  }
2634 
2635  if (infoPtr->himlNormal)
2636  {
2638 
2639  style |= item->state & TVIS_OVERLAYMASK;
2640 
2641  ImageList_DrawEx(infoPtr->himlNormal, imageIndex, hdc,
2642  item->imageOffset, centery - infoPtr->normalImageHeight / 2,
2643  0, 0, infoPtr->clrBk, item->state & TVIS_CUT ? GETBKCOLOR(infoPtr->clrBk) : CLR_DEFAULT,
2644  style);
2645  }
2646  }
2647 
2648 
2649  /*
2650  * Display the text associated with this item
2651  */
2652 
2653  /* Don't paint item's text if it's being edited */
2654  if (!infoPtr->hwndEdit || (infoPtr->selectedItem != item))
2655  {
2656  if (item->pszText)
2657  {
2658  RECT rcText;
2659  UINT align;
2660  SIZE sz;
2661 
2662  rcText.top = item->rect.top;
2663  rcText.bottom = item->rect.bottom;
2664  rcText.left = item->textOffset;
2665  rcText.right = rcText.left + item->textWidth + 4;
2666 
2667  TRACE("drawing text %s at (%s)\n",
2668  debugstr_w(item->pszText), wine_dbgstr_rect(&rcText));
2669 
2670  /* Draw it */
2671  GetTextExtentPoint32W(hdc, item->pszText, strlenW(item->pszText), &sz);
2672 
2673  align = SetTextAlign(hdc, TA_LEFT | TA_TOP);
2674  ExtTextOutW(hdc, rcText.left + 2, (rcText.top + rcText.bottom - sz.cy) / 2,
2676  &rcText,
2677  item->pszText,
2678  lstrlenW(item->pszText),
2679  NULL);
2680  SetTextAlign(hdc, align);
2681 
2682  /* Draw focus box around the selected item */
2683  if ((item == infoPtr->selectedItem) && inFocus)
2684  {
2685  DrawFocusRect(hdc,&rcText);
2686  }
2687  }
2688  }
2689 
2690  /* Draw insertion mark if necessary */
2691 
2692  if (infoPtr->insertMarkItem)
2693  TRACE("item:%d,mark:%p\n",
2694  TREEVIEW_GetItemIndex(infoPtr, item),
2695  infoPtr->insertMarkItem);
2696 
2697  if (item == infoPtr->insertMarkItem)
2698  {
2699  HPEN hNewPen, hOldPen;
2700  int offset;
2701  int left, right;
2702 
2703  hNewPen = CreatePen(PS_SOLID, 2, GETINSCOLOR(infoPtr->clrInsertMark));
2704  hOldPen = SelectObject(hdc, hNewPen);
2705 
2706  if (infoPtr->insertBeforeorAfter)
2707  offset = item->rect.bottom - 1;
2708  else
2709  offset = item->rect.top + 1;
2710 
2711  left = item->textOffset - 2;
2712  right = item->textOffset + item->textWidth + 2;
2713 
2714  MoveToEx(hdc, left, offset - 3, NULL);
2715  LineTo(hdc, left, offset + 4);
2716 
2717  MoveToEx(hdc, left, offset, NULL);
2718  LineTo(hdc, right + 1, offset);
2719 
2720  MoveToEx(hdc, right, offset + 3, NULL);
2721  LineTo(hdc, right, offset - 4);
2722 
2723  SelectObject(hdc, hOldPen);
2724  DeleteObject(hNewPen);
2725  }
2726 
2727  /* Restore the hdc state */
2728  SetTextColor(hdc, oldTextColor);
2729  SetBkColor(hdc, oldTextBkColor);
2730  SelectObject(hdc, hOldFont);
2731 
2732  if (cditem & CDRF_NOTIFYPOSTPAINT)
2733  {
2735  (infoPtr, hdc, item, CDDS_ITEMPOSTPAINT, &nmcdhdr);
2736  TRACE("postpaint:cditem-app returns 0x%x\n", cditem);
2737  }
2738 }
2739 
2740 /* Computes treeHeight and treeWidth and updates the scroll bars.
2741  */
2742 static void
2744 {
2746  HWND hwnd = infoPtr->hwnd;
2747  BOOL vert = FALSE;
2748  BOOL horz = FALSE;
2749  SCROLLINFO si;
2750  LONG scrollX = infoPtr->scrollX;
2751 
2752  infoPtr->treeWidth = 0;
2753  infoPtr->treeHeight = 0;
2754 
2755  /* We iterate through all visible items in order to get the tree height
2756  * and width */
2757  item = infoPtr->root->firstChild;
2758 
2759  while (item != NULL)
2760  {
2761  if (ISVISIBLE(item))
2762  {
2763  /* actually we draw text at textOffset + 2 */
2764  if (2+item->textOffset+item->textWidth > infoPtr->treeWidth)
2765  infoPtr->treeWidth = item->textOffset+item->textWidth+2;
2766 
2767  /* This is scroll-adjusted, but we fix this below. */
2768  infoPtr->treeHeight = item->rect.bottom;
2769  }
2770 
2771  item = TREEVIEW_GetNextListItem(infoPtr, item);
2772  }
2773 
2774  /* Fix the scroll adjusted treeHeight and treeWidth. */
2775  if (infoPtr->root->firstChild)
2776  infoPtr->treeHeight -= infoPtr->root->firstChild->rect.top;
2777 
2778  infoPtr->treeWidth += infoPtr->scrollX;
2779 
2780  if (infoPtr->dwStyle & TVS_NOSCROLL) return;
2781 
2782  /* Adding one scroll bar may take up enough space that it forces us
2783  * to add the other as well. */
2784  if (infoPtr->treeHeight > infoPtr->clientHeight)
2785  {
2786  vert = TRUE;
2787 
2788  if (infoPtr->treeWidth
2790  horz = TRUE;
2791  }
2792  else if (infoPtr->treeWidth > infoPtr->clientWidth || infoPtr->scrollX > 0)
2793  horz = TRUE;
2794 
2795  if (!vert && horz && infoPtr->treeHeight
2797  vert = TRUE;
2798 
2799  if (horz && (infoPtr->dwStyle & TVS_NOHSCROLL)) horz = FALSE;
2800 
2801  si.cbSize = sizeof(SCROLLINFO);
2803  si.nMin = 0;
2804 
2805  if (vert)
2806  {
2807  si.nPage = TREEVIEW_GetVisibleCount(infoPtr);
2808  if ( si.nPage && NULL != infoPtr->firstVisible)
2809  {
2810  si.nPos = infoPtr->firstVisible->visibleOrder;
2811  si.nMax = infoPtr->maxVisibleOrder - 1;
2812 
2813  SetScrollInfo(hwnd, SB_VERT, &si, TRUE);
2814 
2815  if (!(infoPtr->uInternalStatus & TV_VSCROLL))
2816  ShowScrollBar(hwnd, SB_VERT, TRUE);
2817  infoPtr->uInternalStatus |= TV_VSCROLL;
2818  }
2819  else
2820  {
2821  if (infoPtr->uInternalStatus & TV_VSCROLL)
2822  ShowScrollBar(hwnd, SB_VERT, FALSE);
2823  infoPtr->uInternalStatus &= ~TV_VSCROLL;
2824  }
2825  }
2826  else
2827  {
2828  if (infoPtr->uInternalStatus & TV_VSCROLL)
2829  ShowScrollBar(hwnd, SB_VERT, FALSE);
2830  infoPtr->uInternalStatus &= ~TV_VSCROLL;
2831  }
2832 
2833  if (horz)
2834  {
2835  si.nPage = infoPtr->clientWidth;
2836  si.nPos = infoPtr->scrollX;
2837  si.nMax = infoPtr->treeWidth - 1;
2838 
2839  if (si.nPos > si.nMax - max( si.nPage-1, 0 ))
2840  {
2841  si.nPos = si.nMax - max( si.nPage-1, 0 );
2842  scrollX = si.nPos;
2843  }
2844 
2845  if (!(infoPtr->uInternalStatus & TV_HSCROLL))
2846  ShowScrollBar(hwnd, SB_HORZ, TRUE);
2847  infoPtr->uInternalStatus |= TV_HSCROLL;
2848 
2849  SetScrollInfo(hwnd, SB_HORZ, &si, TRUE);
2850  TREEVIEW_HScroll(infoPtr,
2851  MAKEWPARAM(SB_THUMBPOSITION, scrollX));
2852  }
2853  else
2854  {
2855  if (infoPtr->uInternalStatus & TV_HSCROLL)
2856  ShowScrollBar(hwnd, SB_HORZ, FALSE);
2857  infoPtr->uInternalStatus &= ~TV_HSCROLL;
2858 
2859  scrollX = 0;
2860  if (infoPtr->scrollX != 0)
2861  {
2862  TREEVIEW_HScroll(infoPtr,
2863  MAKEWPARAM(SB_THUMBPOSITION, scrollX));
2864  }
2865  }
2866 
2867  if (!horz)
2868  infoPtr->uInternalStatus &= ~TV_HSCROLL;
2869 }
2870 
2871 static void
2872 TREEVIEW_FillBkgnd(const TREEVIEW_INFO *infoPtr, HDC hdc, const RECT *rc)
2873 {
2874  HBRUSH hBrush;
2875  COLORREF clrBk = GETBKCOLOR(infoPtr->clrBk);
2876 
2877  hBrush = CreateSolidBrush(clrBk);
2878  FillRect(hdc, rc, hBrush);
2879  DeleteObject(hBrush);
2880 }
2881 
2882 /* CtrlSpy doesn't mention this, but CorelDRAW's object manager needs it. */
2883 static LRESULT
2885 {
2886  RECT rect;
2887 
2888  TRACE("%p\n", infoPtr);
2889 
2890  GetClientRect(infoPtr->hwnd, &rect);
2891  TREEVIEW_FillBkgnd(infoPtr, hdc, &rect);
2892 
2893  return 1;
2894 }
2895 
2896 static void
2898 {
2899  HWND hwnd = infoPtr->hwnd;
2900  RECT rect = *rc;
2902 
2903  if (infoPtr->clientHeight == 0 || infoPtr->clientWidth == 0)
2904  {
2905  TRACE("empty window\n");
2906  return;
2907  }
2908 
2910  hdc, rect);
2911 
2912  if (infoPtr->cdmode == CDRF_SKIPDEFAULT)
2913  {
2914  ReleaseDC(hwnd, hdc);
2915  return;
2916  }
2917 
2918  for (item = infoPtr->root->firstChild;
2919  item != NULL;
2920  item = TREEVIEW_GetNextListItem(infoPtr, item))
2921  {
2922  if (ISVISIBLE(item))
2923  {
2924  /* Avoid unneeded calculations */
2925  if (item->rect.top > rect.bottom)
2926  break;
2927  if (item->rect.bottom < rect.top)
2928  continue;
2929 
2930  TREEVIEW_DrawItem(infoPtr, hdc, item);
2931  }
2932  }
2933 
2934  //
2935  // FIXME: This is correct, but is causes and infinite loop of WM_PAINT
2936  // messages, resulting in continuous painting of the scroll bar in reactos.
2937  // Comment out until the real bug is found. CORE-4912
2938  //
2939 #ifndef __REACTOS__
2940  TREEVIEW_UpdateScrollBars(infoPtr);
2941 #endif
2942 
2943  if (infoPtr->cdmode & CDRF_NOTIFYPOSTPAINT)
2944  infoPtr->cdmode =
2945  TREEVIEW_SendCustomDrawNotify(infoPtr, CDDS_POSTPAINT, hdc, rect);
2946 }
2947 
2948 static inline void
2950 {
2951  if (item) InvalidateRect(infoPtr->hwnd, &item->rect, TRUE);
2952 }
2953 
2954 static void
2956 {
2957  if (item)
2958  InvalidateRect(infoPtr->hwnd, &item->rect, TRUE);
2959  else
2960  InvalidateRect(infoPtr->hwnd, NULL, TRUE);
2961 }
2962 
2963 static void
2965 {
2966  RECT rc;
2967  HBITMAP hbm, hbmOld;
2968  HDC hdc, hdcScreen;
2969  int nIndex;
2970 
2971  infoPtr->himlState = ImageList_Create(16, 16, ILC_COLOR | ILC_MASK, 3, 0);
2972 
2973  hdcScreen = GetDC(0);
2974 
2975  hdc = CreateCompatibleDC(hdcScreen);
2976  hbm = CreateCompatibleBitmap(hdcScreen, 48, 16);
2977  hbmOld = SelectObject(hdc, hbm);
2978 
2979  SetRect(&rc, 0, 0, 48, 16);
2980  FillRect(hdc, &rc, (HBRUSH)(COLOR_WINDOW+1));
2981 
2982  SetRect(&rc, 18, 2, 30, 14);
2983  DrawFrameControl(hdc, &rc, DFC_BUTTON,
2985 
2986  SetRect(&rc, 34, 2, 46, 14);
2987  DrawFrameControl(hdc, &rc, DFC_BUTTON,
2989 
2990  SelectObject(hdc, hbmOld);
2991  nIndex = ImageList_AddMasked(infoPtr->himlState, hbm,
2993  TRACE("checkbox index %d\n", nIndex);
2994 
2995  DeleteObject(hbm);
2996  DeleteDC(hdc);
2997  ReleaseDC(0, hdcScreen);
2998 
2999  infoPtr->stateImageWidth = 16;
3000  infoPtr->stateImageHeight = 16;
3001 }
3002 
3003 static void
3005 {
3006  TREEVIEW_ITEM *child = item->firstChild;
3007 
3008  item->state &= ~TVIS_STATEIMAGEMASK;
3009  item->state |= INDEXTOSTATEIMAGEMASK(1);
3010 
3011  while (child)
3012  {
3013  TREEVIEW_ITEM *next = child->nextSibling;
3014  TREEVIEW_ResetImageStateIndex(infoPtr, child);
3015  child = next;
3016  }
3017 }
3018 
3019 static LRESULT
3021 {
3022  HDC hdc;
3023  PAINTSTRUCT ps;
3024  RECT rc;
3025 
3026  TRACE("(%p %p)\n", infoPtr, hdc_ref);
3027 
3028  if ((infoPtr->dwStyle & TVS_CHECKBOXES) && !infoPtr->himlState)
3029  {
3030  TREEVIEW_InitCheckboxes(infoPtr);
3031  TREEVIEW_ResetImageStateIndex(infoPtr, infoPtr->root);
3032 
3033  TREEVIEW_EndEditLabelNow(infoPtr, TRUE);
3034  TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
3035  TREEVIEW_UpdateScrollBars(infoPtr);
3036  TREEVIEW_Invalidate(infoPtr, NULL);
3037  }
3038 
3039  if (hdc_ref)
3040  {
3041  hdc = hdc_ref;
3042  GetClientRect(infoPtr->hwnd, &rc);
3043  TREEVIEW_FillBkgnd(infoPtr, hdc, &rc);
3044  }
3045  else
3046  {
3047  hdc = BeginPaint(infoPtr->hwnd, &ps);
3048  rc = ps.rcPaint;
3049  if(ps.fErase)
3050  TREEVIEW_FillBkgnd(infoPtr, hdc, &rc);
3051  }
3052 
3053  if(infoPtr->bRedraw) /* WM_SETREDRAW sets bRedraw */
3054  TREEVIEW_Refresh(infoPtr, hdc, &rc);
3055 
3056  if (!hdc_ref)
3057  EndPaint(infoPtr->hwnd, &ps);
3058 
3059  return 0;
3060 }
3061 
3062 static LRESULT
3064 {
3065  FIXME("Partial Stub: (hdc=%p options=0x%08x)\n", hdc, options);
3066 
3067  if ((options & PRF_CHECKVISIBLE) && !IsWindowVisible(infoPtr->hwnd))
3068  return 0;
3069 
3070  if (options & PRF_ERASEBKGND)
3071  TREEVIEW_EraseBackground(infoPtr, hdc);
3072 
3073  if (options & PRF_CLIENT)
3074  {
3075  RECT rc;
3076  GetClientRect(infoPtr->hwnd, &rc);
3077  TREEVIEW_Refresh(infoPtr, hdc, &rc);
3078  }
3079 
3080  return 0;
3081 }
3082 
3083 /* Sorting **************************************************************/
3084 
3085 /***************************************************************************
3086  * Forward the DPA local callback to the treeview owner callback
3087  */
3088 static INT WINAPI
3090  const TVSORTCB *pCallBackSort)
3091 {
3092  /* Forward the call to the client-defined callback */
3093  return pCallBackSort->lpfnCompare(first->lParam,
3094  second->lParam,
3095  pCallBackSort->lParam);
3096 }
3097 
3098 /***************************************************************************
3099  * Treeview native sort routine: sort on item text.
3100  */
3101 static INT WINAPI
3103  const TREEVIEW_INFO *infoPtr)
3104 {
3105  TREEVIEW_UpdateDispInfo(infoPtr, first, TVIF_TEXT);
3106  TREEVIEW_UpdateDispInfo(infoPtr, second, TVIF_TEXT);
3107 
3108  if(first->pszText && second->pszText)
3109  return lstrcmpiW(first->pszText, second->pszText);
3110  else if(first->pszText)
3111  return -1;
3112  else if(second->pszText)
3113  return 1;
3114  else
3115  return 0;
3116 }
3117 
3118 /* Returns the number of physical children belonging to item. */
3119 static INT
3121 {
3122  INT cChildren = 0;
3123  HTREEITEM hti;
3124 
3125  for (hti = item->firstChild; hti != NULL; hti = hti->nextSibling)
3126  cChildren++;
3127 
3128  return cChildren;
3129 }
3130 
3131 /* Returns a DPA containing a pointer to each physical child of item in
3132  * sibling order. If item has no children, an empty DPA is returned. */
3133 static HDPA
3135 {
3136  HTREEITEM child;
3137 
3138  HDPA list = DPA_Create(8);
3139  if (list == 0) return NULL;
3140 
3141  for (child = item->firstChild; child != NULL; child = child->nextSibling)
3142  {
3143  if (DPA_InsertPtr(list, INT_MAX, child) == -1)
3144  {
3145  DPA_Destroy(list);
3146  return NULL;
3147  }
3148  }
3149 
3150  return list;
3151 }
3152 
3153 /***************************************************************************
3154  * Setup the treeview structure with regards of the sort method
3155  * and sort the children of the TV item specified in lParam
3156  * fRecurse: currently unused. Should be zero.
3157  * parent: if pSort!=NULL, should equal pSort->hParent.
3158  * otherwise, item which child items are to be sorted.
3159  * pSort: sort method info. if NULL, sort on item text.
3160  * if non-NULL, sort on item's lParam content, and let the
3161  * application decide what that means. See also TVM_SORTCHILDRENCB.
3162  */
3163 
3164 static LRESULT
3166  LPTVSORTCB pSort)
3167 {
3168  INT cChildren;
3169  PFNDPACOMPARE pfnCompare;
3170  LPARAM lpCompare;
3171 
3172  /* undocumented feature: TVI_ROOT or NULL means `sort the whole tree' */
3173  if (parent == TVI_ROOT || parent == NULL)
3174  parent = infoPtr->root;
3175 
3176  /* Check for a valid handle to the parent item */
3177  if (!TREEVIEW_ValidItem(infoPtr, parent))
3178  {
3179  ERR("invalid item hParent=%p\n", parent);
3180  return FALSE;
3181  }
3182 
3183  if (pSort)
3184  {
3186  lpCompare = (LPARAM)pSort;
3187  }
3188  else
3189  {
3190  pfnCompare = (PFNDPACOMPARE)TREEVIEW_SortOnName;
3191  lpCompare = (LPARAM)infoPtr;
3192  }
3193 
3194  cChildren = TREEVIEW_CountChildren(parent);
3195 
3196  /* Make sure there is something to sort */
3197  if (cChildren > 1)
3198  {
3199  /* TREEVIEW_ITEM rechaining */
3200  INT count = 0;
3201  HTREEITEM item = 0;
3202  HTREEITEM nextItem = 0;
3203  HTREEITEM prevItem = 0;
3204 
3205  HDPA sortList = TREEVIEW_BuildChildDPA(parent);
3206 
3207  if (sortList == NULL)
3208  return FALSE;
3209 
3210  /* let DPA sort the list */
3211  DPA_Sort(sortList, pfnCompare, lpCompare);
3212 
3213  /* The order of DPA entries has been changed, so fixup the
3214  * nextSibling and prevSibling pointers. */
3215 
3216  item = DPA_GetPtr(sortList, count++);
3217  while ((nextItem = DPA_GetPtr(sortList, count++)) != NULL)
3218  {
3219  /* link the two current item together */
3220  item->nextSibling = nextItem;
3221  nextItem->prevSibling = item;
3222 
3223  if (prevItem == NULL)
3224  {
3225  /* this is the first item, update the parent */
3226  parent->firstChild = item;
3227  item->prevSibling = NULL;
3228  }
3229  else
3230  {
3231  /* fix the back chaining */
3232  item->prevSibling = prevItem;
3233  }
3234 
3235  /* get ready for the next one */
3236  prevItem = item;
3237  item = nextItem;
3238  }
3239 
3240  /* the last item is pointed to by item and never has a sibling */
3241  item->nextSibling = NULL;
3242  parent->lastChild = item;
3243 
3244  DPA_Destroy(sortList);
3245 
3246  TREEVIEW_VerifyTree(infoPtr);
3247 
3248  if (parent->state & TVIS_EXPANDED)
3249  {
3250  int visOrder = infoPtr->firstVisible->visibleOrder;
3251 
3252  if (parent == infoPtr->root)
3254  else
3255  TREEVIEW_RecalculateVisibleOrder(infoPtr, parent);
3256 
3257  if (TREEVIEW_IsChildOf(parent, infoPtr->firstVisible))
3258  {
3260 
3261  for (item = infoPtr->root->firstChild; item != NULL;
3262  item = TREEVIEW_GetNextListItem(infoPtr, item))
3263  {
3264  if (item->visibleOrder == visOrder)
3265  break;
3266  }
3267 
3268  if (!item) item = parent->firstChild;
3269  TREEVIEW_SetFirstVisible(infoPtr, item, FALSE);
3270  }
3271 
3272  TREEVIEW_Invalidate(infoPtr, NULL);
3273  }
3274 
3275  return TRUE;
3276  }
3277  return FALSE;
3278 }
3279 
3280 
3281 /***************************************************************************
3282  * Setup the treeview structure with regards of the sort method
3283  * and sort the children of the TV item specified in lParam
3284  */
3285 static LRESULT
3287 {
3288  return TREEVIEW_Sort(infoPtr, pSort->hParent, pSort);
3289 }
3290 
3291 
3292 /***************************************************************************
3293  * Sort the children of the TV item specified in lParam.
3294  */
3295 static LRESULT
3297 {
3298  return TREEVIEW_Sort(infoPtr, (HTREEITEM)lParam, NULL);
3299 }
3300 
3301 
3302 /* Expansion/Collapse ***************************************************/
3303 
3304 static BOOL
3306  UINT action)
3307 {
3308  return !TREEVIEW_SendTreeviewNotify(infoPtr, TVN_ITEMEXPANDINGW, action,
3311  0, item);
3312 }
3313 
3314 static VOID
3316  UINT action)
3317 {
3321  0, item);
3322 }
3323 
3324 
3325 /* This corresponds to TVM_EXPAND with TVE_COLLAPSE.
3326  * bRemoveChildren corresponds to TVE_COLLAPSERESET. */
3327 static BOOL
3329  BOOL bRemoveChildren, BOOL bUser)
3330 {
3331  UINT action = TVE_COLLAPSE | (bRemoveChildren ? TVE_COLLAPSERESET : 0);
3332  BOOL bSetSelection, bSetFirstVisible;
3333  RECT scrollRect;
3334  LONG scrollDist = 0;
3335  TREEVIEW_ITEM *nextItem = NULL, *tmpItem;
3336  BOOL wasExpanded;
3337 
3338  TRACE("TVE_COLLAPSE %p %s\n", item, TREEVIEW_ItemName(item));
3339 
3340  if (!TREEVIEW_HasChildren(infoPtr, item))
3341  return FALSE;
3342 
3343  if (bUser)
3344  TREEVIEW_SendExpanding(infoPtr, item, action);
3345 
3346  if (item->firstChild == NULL)
3347  return FALSE;
3348 
3349  wasExpanded = (item->state & TVIS_EXPANDED) != 0;
3350  item->state &= ~TVIS_EXPANDED;
3351 
3352  if (wasExpanded && bUser)
3353  TREEVIEW_SendExpanded(infoPtr, item, action);
3354 
3355  bSetSelection = (infoPtr->selectedItem != NULL
3356  && TREEVIEW_IsChildOf(item, infoPtr->selectedItem));
3357 
3358  bSetFirstVisible = (infoPtr->firstVisible != NULL
3359  && TREEVIEW_IsChildOf(item, infoPtr->firstVisible));
3360 
3361  tmpItem = item;
3362  while (tmpItem)
3363  {
3364  if (tmpItem->nextSibling)
3365  {
3366  nextItem = tmpItem->nextSibling;
3367  break;
3368  }
3369  tmpItem = tmpItem->parent;
3370  }
3371 
3372  if (nextItem)
3373  scrollDist = nextItem->rect.top;
3374 
3375  if (bRemoveChildren)
3376  {
3377  INT old_cChildren = item->cChildren;
3378  TRACE("TVE_COLLAPSERESET\n");
3379  item->state &= ~TVIS_EXPANDEDONCE;
3380  TREEVIEW_RemoveAllChildren(infoPtr, item);
3381  item->cChildren = old_cChildren;
3382  }
3383  if (!wasExpanded)
3384  return FALSE;
3385 
3386  if (item->firstChild)
3387  {
3388  TREEVIEW_ITEM *i, *sibling;
3389 
3390  sibling = TREEVIEW_GetNextListItem(infoPtr, item);
3391 
3392  for (i = item->firstChild; i != sibling;
3393  i = TREEVIEW_GetNextListItem(infoPtr, i))
3394  {
3395  i->visibleOrder = -1;
3396  }
3397  }
3398 
3399  TREEVIEW_RecalculateVisibleOrder(infoPtr, item);
3400 
3401  if (nextItem)
3402  scrollDist = -(scrollDist - nextItem->rect.top);
3403 
3404  if (bSetSelection)
3405  {
3406  /* Don't call DoSelectItem, it sends notifications. */
3407  if (TREEVIEW_ValidItem(infoPtr, infoPtr->selectedItem))
3408  infoPtr->selectedItem->state &= ~TVIS_SELECTED;
3409  item->state |= TVIS_SELECTED;
3410  infoPtr->selectedItem = item;
3411  }
3412 
3413  TREEVIEW_UpdateScrollBars(infoPtr);
3414 
3415  scrollRect.left = 0;
3416  scrollRect.right = infoPtr->clientWidth;
3417  scrollRect.bottom = infoPtr->clientHeight;
3418 
3419  if (nextItem)
3420  {
3421  scrollRect.top = nextItem->rect.top;
3422 
3423  ScrollWindowEx (infoPtr->hwnd, 0, scrollDist, &scrollRect, &scrollRect,
3425  TREEVIEW_Invalidate(infoPtr, item);
3426  } else {
3427  scrollRect.top = item->rect.top;
3428  InvalidateRect(infoPtr->hwnd, &scrollRect, TRUE);
3429  }
3430 
3431  TREEVIEW_SetFirstVisible(infoPtr,
3432  bSetFirstVisible ? item : infoPtr->firstVisible,
3433  TRUE);
3434 
3435  return wasExpanded;
3436 }
3437 
3438 static BOOL
3440  BOOL partial, BOOL user)
3441 {
3442  LONG scrollDist;
3443  LONG orgNextTop = 0;
3444  RECT scrollRect;
3445  TREEVIEW_ITEM *nextItem, *tmpItem;
3446  BOOL sendsNotifications;
3447 
3448  TRACE("(%p, %p, partial=%d, %d)\n", infoPtr, item, partial, user);
3449 
3450  if (!TREEVIEW_HasChildren(infoPtr, item))
3451  return FALSE;
3452 
3453  tmpItem = item; nextItem = NULL;
3454  while (tmpItem)
3455  {
3456  if (tmpItem->nextSibling)
3457  {
3458  nextItem = tmpItem->nextSibling;
3459  break;
3460  }
3461  tmpItem = tmpItem->parent;
3462  }
3463 
3464  if (nextItem)
3465  orgNextTop = nextItem->rect.top;
3466 
3467  TRACE("TVE_EXPAND %p %s\n", item, TREEVIEW_ItemName(item));
3468 
3469  sendsNotifications = user || ((item->cChildren != 0) &&
3470  !(item->state & TVIS_EXPANDEDONCE));
3471  if (sendsNotifications)
3472  {
3473  if (!TREEVIEW_SendExpanding(infoPtr, item, TVE_EXPAND))
3474  {
3475  TRACE(" TVN_ITEMEXPANDING returned TRUE, exiting...\n");
3476  return FALSE;
3477  }
3478  }
3479  if (!item->firstChild)
3480  return FALSE;
3481 
3482  item->state |= TVIS_EXPANDED;
3483 
3484  if (partial)
3485  FIXME("TVE_EXPANDPARTIAL not implemented\n");
3486 
3487  if (ISVISIBLE(item))
3488  {
3489  TREEVIEW_RecalculateVisibleOrder(infoPtr, item);
3490  TREEVIEW_UpdateSubTree(infoPtr, item);
3491  TREEVIEW_UpdateScrollBars(infoPtr);
3492 
3493  scrollRect.left = 0;
3494  scrollRect.bottom = infoPtr->treeHeight;
3495  scrollRect.right = infoPtr->clientWidth;
3496  if (nextItem)
3497  {
3498  scrollDist = nextItem->rect.top - orgNextTop;
3499  scrollRect.top = orgNextTop;
3500 
3501  ScrollWindowEx (infoPtr->hwnd, 0, scrollDist, &scrollRect, NULL,
3503  TREEVIEW_Invalidate (infoPtr, item);
3504  } else {
3505  scrollRect.top = item->rect.top;
3506  InvalidateRect(infoPtr->hwnd, &scrollRect, FALSE);
3507  }
3508 
3509  /* Scroll up so that as many children as possible are visible.
3510  * This fails when expanding causes an HScroll bar to appear, but we
3511  * don't know that yet, so the last item is obscured. */
3512  if (item->firstChild != NULL)
3513  {
3514  int nChildren = item->lastChild->visibleOrder
3515  - item->firstChild->visibleOrder + 1;
3516 
3517  int visible_pos = item->visibleOrder
3518  - infoPtr->firstVisible->visibleOrder;
3519 
3520  int rows_below = TREEVIEW_GetVisibleCount(infoPtr) - visible_pos - 1;
3521 
3522  if (visible_pos > 0 && nChildren > rows_below)
3523  {
3524  int scroll = nChildren - rows_below;
3525 
3526  if (scroll > visible_pos)
3527  scroll = visible_pos;
3528 
3529  if (scroll > 0)
3530  {
3531  TREEVIEW_ITEM *newFirstVisible
3532  = TREEVIEW_GetListItem(infoPtr, infoPtr->firstVisible,
3533  scroll);
3534 
3535 
3536  TREEVIEW_SetFirstVisible(infoPtr, newFirstVisible, TRUE);
3537  }
3538  }
3539  }
3540  }
3541 
3542  if (sendsNotifications) {
3543  TREEVIEW_SendExpanded(infoPtr, item, TVE_EXPAND);
3544  item->state |= TVIS_EXPANDEDONCE;
3545  }
3546 
3547  return TRUE;
3548 }
3549 
3550 /* Handler for TVS_SINGLEEXPAND behaviour. Used on response
3551  to mouse messages and TVM_SELECTITEM.
3552 
3553  selection - previously selected item, used to collapse a part of a tree
3554  item - new selected item
3555 */
3558 {
3559  TREEVIEW_ITEM *prev, *curr;
3560 
3561  if ((infoPtr->dwStyle & TVS_SINGLEEXPAND) == 0 || infoPtr->hwndEdit || !item) return;
3562 
3564 
3565  /*
3566  * Close the previous item and its ancestors as long as they are not
3567  * ancestors of the current item
3568  */
3569  for (prev = selection; prev && TREEVIEW_ValidItem(infoPtr, prev); prev = prev->parent)
3570  {
3571  for (curr = item; curr && TREEVIEW_ValidItem(infoPtr, curr); curr = curr->parent)
3572  {
3573  if (curr == prev)
3574  goto finish;
3575  }
3576  TREEVIEW_Collapse(infoPtr, prev, FALSE, TRUE);
3577  }
3578 
3579 finish:
3580  /*
3581  * Expand the current item
3582  */
3583  TREEVIEW_Expand(infoPtr, item, FALSE, TRUE);
3584 }
3585 
3586 static BOOL
3588 {
3589  TRACE("item=%p, user=%d\n", item, user);
3590 
3591  if (item->state & TVIS_EXPANDED)
3592  return TREEVIEW_Collapse(infoPtr, item, FALSE, user);
3593  else
3594  return TREEVIEW_Expand(infoPtr, item, FALSE, user);
3595 }
3596 
3597 static VOID
3599 {
3600  TREEVIEW_Expand(infoPtr, item, FALSE, TRUE);
3601 
3602  for (item = item->firstChild; item != NULL; item = item->nextSibling)
3603  {
3604  if (TREEVIEW_HasChildren(infoPtr, item))
3605  TREEVIEW_ExpandAll(infoPtr, item);
3606  }
3607 }
3608 
3609 /* Note:If the specified item is the child of a collapsed parent item,
3610  the parent's list of child items is (recursively) expanded to reveal the
3611  specified item. This is mentioned for TREEVIEW_SelectItem; don't
3612  know if it also applies here.
3613 */
3614 
3615 static LRESULT
3617 {
3618  if (!TREEVIEW_ValidItem(infoPtr, item))
3619  return 0;
3620 
3621  TRACE("For (%s) item:%d, flags 0x%x, state:%d\n",
3622  TREEVIEW_ItemName(item), TREEVIEW_GetItemIndex(infoPtr, item),
3623  flag, item->state);
3624 
3625  switch (flag & TVE_TOGGLE)
3626  {
3627  case TVE_COLLAPSE:
3628  return TREEVIEW_Collapse(infoPtr, item, flag & TVE_COLLAPSERESET,
3629  FALSE);
3630 
3631  case TVE_EXPAND:
3632  return TREEVIEW_Expand(infoPtr, item, flag & TVE_EXPANDPARTIAL,
3633  FALSE);
3634 
3635  case TVE_TOGGLE:
3636  return TREEVIEW_Toggle(infoPtr, item, FALSE);
3637 
3638  default:
3639  return 0;
3640  }
3641 }
3642 
3643 /* Hit-Testing **********************************************************/
3644 
3645 static TREEVIEW_ITEM *
3647 {
3649  LONG row;
3650 
3651  if (!infoPtr->firstVisible)
3652  return NULL;
3653 
3654  row = pt.y / infoPtr->uItemHeight + infoPtr->firstVisible->visibleOrder;
3655 
3656  for (item = infoPtr->firstVisible; item != NULL;
3657  item = TREEVIEW_GetNextListItem(infoPtr, item))
3658  {
3659  if (row >= item->visibleOrder
3660  && row < item->visibleOrder + item->iIntegral)
3661  break;
3662  }
3663 
3664  return item;
3665 }
3666 
3667 static TREEVIEW_ITEM *
3669 {
3671  RECT rect;
3672  UINT status;
3673  LONG x, y;
3674 
3675  lpht->hItem = 0;
3676  GetClientRect(infoPtr->hwnd, &rect);
3677  status = 0;
3678  x = lpht->pt.x;
3679  y = lpht->pt.y;
3680 
3681  if (x < rect.left)
3682  {
3683  status |= TVHT_TOLEFT;
3684  }
3685  else if (x > rect.right)
3686  {
3687  status |= TVHT_TORIGHT;
3688  }
3689 
3690  if (y < rect.top)
3691  {
3692  status |= TVHT_ABOVE;
3693  }
3694  else if (y > rect.bottom)
3695  {
3696  status |= TVHT_BELOW;
3697  }
3698 
3699  if (status)
3700  {
3701  lpht->flags = status;
3702  return NULL;
3703  }
3704 
3705  item = TREEVIEW_HitTestPoint(infoPtr, lpht->pt);
3706  if (!item)
3707  {
3708  lpht->flags = TVHT_NOWHERE;
3709  return NULL;
3710  }
3711 
3712  if (!item->textWidth)
3713  TREEVIEW_ComputeTextWidth(infoPtr, item, 0);
3714 
3715  if (x >= item->textOffset + item->textWidth)
3716  {
3717  lpht->flags = TVHT_ONITEMRIGHT;
3718  }
3719  else if (x >= item->textOffset)
3720  {
3721  lpht->flags = TVHT_ONITEMLABEL;
3722  }
3723  else if (x >= item->imageOffset)
3724  {
3725  lpht->flags = TVHT_ONITEMICON;
3726  }
3727  else if (x >= item->stateOffset)
3728  {
3729  lpht->flags = TVHT_ONITEMSTATEICON;
3730  }
3731  else if (x >= item->linesOffset && infoPtr->dwStyle & TVS_HASBUTTONS)
3732  {
3733  lpht->flags = TVHT_ONITEMBUTTON;
3734  }
3735  else
3736  {
3737  lpht->flags = TVHT_ONITEMINDENT;
3738  }
3739 
3740  lpht->hItem = item;
3741  TRACE("(%d,%d):result 0x%x\n", lpht->pt.x, lpht->pt.y, lpht->flags);
3742 
3743  return item;
3744 }
3745 
3746 /* Item Label Editing ***************************************************/
3747 
3748 static LRESULT
3750 {
3751  return (LRESULT)infoPtr->hwndEdit;
3752 }
3753 
3754 static LRESULT CALLBACK
3756 {
3757  TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(GetParent(hwnd));
3758  BOOL bCancel = FALSE;
3759  LRESULT rc;
3760 
3761  switch (uMsg)
3762  {
3763  case WM_PAINT:
3764  TRACE("WM_PAINT start\n");
3765  rc = CallWindowProcW(infoPtr->wpEditOrig, hwnd, uMsg, wParam,
3766  lParam);
3767  TRACE("WM_PAINT done\n");
3768  return rc;
3769 
3770  case WM_KILLFOCUS:
3771  if (infoPtr->bIgnoreEditKillFocus)
3772  return TRUE;
3773  break;
3774 
3775  case WM_DESTROY:
3776  {
3777  WNDPROC editProc = infoPtr->wpEditOrig;
3778  infoPtr->wpEditOrig = 0;
3779  SetWindowLongPtrW(hwnd, GWLP_WNDPROC, (DWORD_PTR)editProc);
3780  return CallWindowProcW(editProc, hwnd, uMsg, wParam, lParam);
3781  }
3782 
3783  case WM_GETDLGCODE:
3785 
3786  case WM_KEYDOWN:
3787  if (wParam == VK_ESCAPE)
3788  {
3789  bCancel = TRUE;
3790  break;
3791  }
3792  else if (wParam == VK_RETURN)
3793  {
3794  break;
3795  }
3796 
3797  /* fall through */
3798  default:
3799  return CallWindowProcW(infoPtr->wpEditOrig, hwnd, uMsg, wParam, lParam);
3800  }
3801 
3802  /* Processing TVN_ENDLABELEDIT message could kill the focus */
3803  /* eg. Using a messagebox */
3804 
3805  infoPtr->bIgnoreEditKillFocus = TRUE;
3806  TREEVIEW_EndEditLabelNow(infoPtr, bCancel || !infoPtr->bLabelChanged);
3807  infoPtr->bIgnoreEditKillFocus = FALSE;
3808 
3809  return 0;
3810 }
3811 
3812 
3813 /* should handle edit control messages here */
3814 
3815 static LRESULT
3817 {
3818  TRACE("code=0x%x, id=0x%x, handle=0x%lx\n", HIWORD(wParam), LOWORD(wParam), lParam);
3819 
3820  switch (HIWORD(wParam))
3821  {
3822  case EN_UPDATE:
3823  {
3824  /*
3825  * Adjust the edit window size
3826  */
3827  WCHAR buffer[1024];
3828  TREEVIEW_ITEM *editItem = infoPtr->editItem;
3829  HDC hdc = GetDC(infoPtr->hwndEdit);
3830  SIZE sz;
3831  HFONT hFont, hOldFont = 0;
3832 
3833  TRACE("edit=%p\n", infoPtr->hwndEdit);
3834 
3835  if (!IsWindow(infoPtr->hwndEdit) || !hdc) return FALSE;
3836 
3837  infoPtr->bLabelChanged = TRUE;
3838 
3839  GetWindowTextW(infoPtr->hwndEdit, buffer, ARRAY_SIZE(buffer));
3840 
3841  /* Select font to get the right dimension of the string */
3842  hFont = (HFONT)SendMessageW(infoPtr->hwndEdit, WM_GETFONT, 0, 0);
3843 
3844  if (hFont != 0)
3845  {
3846  hOldFont = SelectObject(hdc, hFont);
3847  }
3848 
3849  if (GetTextExtentPoint32W(hdc, buffer, strlenW(buffer), &sz))
3850  {
3851  TEXTMETRICW textMetric;
3852 
3853  /* Add Extra spacing for the next character */
3854  GetTextMetricsW(hdc, &textMetric);
3855  sz.cx += (textMetric.tmMaxCharWidth * 2);
3856 
3857  sz.cx = max(sz.cx, textMetric.tmMaxCharWidth * 3);
3858  sz.cx = min(sz.cx,
3859  infoPtr->clientWidth - editItem->textOffset + 2);
3860 
3861  SetWindowPos(infoPtr->hwndEdit,
3862  HWND_TOP,
3863  0,
3864  0,
3865  sz.cx,
3866  editItem->rect.bottom - editItem->rect.top + 3,
3868  }
3869 
3870  if (hFont != 0)
3871  {
3872  SelectObject(hdc, hOldFont);
3873  }
3874 
3875  ReleaseDC(infoPtr->hwnd, hdc);
3876  break;
3877  }
3878  case EN_KILLFOCUS:
3879  /* apparently we should respect passed handle value */
3880  if (infoPtr->hwndEdit != (HWND)lParam) return FALSE;
3881 
3882  TREEVIEW_EndEditLabelNow(infoPtr, FALSE);
3883  break;
3884 
3885  default:
3886  return SendMessageW(infoPtr->hwndNotify, WM_COMMAND, wParam, lParam);
3887  }
3888 
3889  return 0;
3890 }
3891 
3892 static HWND
3894 {
3895  HWND hwnd = infoPtr->hwnd;
3896  HWND hwndEdit;
3897  SIZE sz;
3899  HDC hdc;
3900  HFONT hOldFont=0;
3901  TEXTMETRICW textMetric;
3902 
3903  TRACE("%p %p\n", hwnd, hItem);
3904  if (!(infoPtr->dwStyle & TVS_EDITLABELS))
3905  return NULL;
3906 
3907  if (!TREEVIEW_ValidItem(infoPtr, hItem))
3908  return NULL;
3909 
3910  if (infoPtr->hwndEdit)
3911  return infoPtr->hwndEdit;
3912 
3913  infoPtr->bLabelChanged = FALSE;
3914 
3915  /* make edit item visible */
3916  TREEVIEW_EnsureVisible(infoPtr, hItem, TRUE);
3917 
3918  TREEVIEW_UpdateDispInfo(infoPtr, hItem, TVIF_TEXT);
3919 
3920  hdc = GetDC(hwnd);
3921  /* Select the font to get appropriate metric dimensions */
3922  if (infoPtr->hFont != 0)
3923  {
3924  hOldFont = SelectObject(hdc, infoPtr->hFont);
3925  }
3926 
3927  /* Get string length in pixels */
3928  if (hItem->pszText)
3929  GetTextExtentPoint32W(hdc, hItem->pszText, strlenW(hItem->pszText),
3930  &sz);
3931  else
3932  GetTextExtentPoint32A(hdc, "", 0, &sz);
3933 
3934  /* Add Extra spacing for the next character */
3935  GetTextMetricsW(hdc, &textMetric);
3936  sz.cx += (textMetric.tmMaxCharWidth * 2);
3937 
3938  sz.cx = max(sz.cx, textMetric.tmMaxCharWidth * 3);
3939  sz.cx = min(sz.cx, infoPtr->clientWidth - hItem->textOffset + 2);
3940 
3941  if (infoPtr->hFont != 0)
3942  {
3943  SelectObject(hdc, hOldFont);
3944  }
3945 
3946  ReleaseDC(hwnd, hdc);
3947 
3948  infoPtr->editItem = hItem;
3949 
3950  hwndEdit = CreateWindowExW(WS_EX_LEFT,
3951  WC_EDITW,
3952  0,
3955  ES_LEFT, hItem->textOffset - 2,
3956  hItem->rect.top - 1, sz.cx + 3,
3957  hItem->rect.bottom -
3958  hItem->rect.top + 3, hwnd, 0, hinst, 0);
3959 /* FIXME: (HMENU)IDTVEDIT,pcs->hInstance,0); */
3960 
3961  infoPtr->hwndEdit = hwndEdit;
3962 
3963  /* Get a 2D border. */
3964  SetWindowLongW(hwndEdit, GWL_EXSTYLE,
3966  SetWindowLongW(hwndEdit, GWL_STYLE,
3967  GetWindowLongW(hwndEdit, GWL_STYLE) | WS_BORDER);
3968 
3969  SendMessageW(hwndEdit, WM_SETFONT,
3970  (WPARAM)TREEVIEW_FontForItem(infoPtr, hItem), FALSE);
3971 
3972  infoPtr->wpEditOrig = (WNDPROC)SetWindowLongPtrW(hwndEdit, GWLP_WNDPROC,
3973  (DWORD_PTR)
3975  if (hItem->pszText)
3976  SetWindowTextW(hwndEdit, hItem->pszText);
3977 
3978  if (TREEVIEW_BeginLabelEditNotify(infoPtr, hItem))
3979  {
3980  DestroyWindow(hwndEdit);
3981  infoPtr->hwndEdit = 0;
3982  infoPtr->editItem = NULL;
3983  return NULL;
3984  }
3985 
3986  SetFocus(hwndEdit);
3987  SendMessageW(hwndEdit, EM_SETSEL, 0, -1);
3988  ShowWindow(hwndEdit, SW_SHOW);
3989 
3990  return hwndEdit;
3991 }
3992 
3993 
3994 static LRESULT
3996 {
3997  TREEVIEW_ITEM *editedItem = infoPtr->editItem;
3998  NMTVDISPINFOW tvdi;
3999  BOOL bCommit;
4000  WCHAR tmpText[1024] = { '\0' };
4001  WCHAR *newText = tmpText;
4002  int iLength = 0;
4003 
4004  if (!IsWindow(infoPtr->hwndEdit)) return FALSE;
4005 
4006  tvdi.item.mask = 0;
4007  tvdi.item.hItem = editedItem;
4008  tvdi.item.state = editedItem->state;
4009  tvdi.item.lParam = editedItem->lParam;
4010 
4011  if (!bCancel)
4012  {
4013  if (!infoPtr->bNtfUnicode)
4014  iLength = GetWindowTextA(infoPtr->hwndEdit, (LPSTR)tmpText, 1023);
4015  else
4016  iLength = GetWindowTextW(infoPtr->hwndEdit, tmpText, 1023);
4017 
4018  if (iLength >= 1023)
4019  {
4020  ERR("Insufficient space to retrieve new item label\n");
4021  }
4022 
4023  tvdi.item.mask = TVIF_TEXT;
4024  tvdi.item.pszText = tmpText;
4025  tvdi.item.cchTextMax = iLength + 1;
4026  }
4027  else
4028  {
4029  tvdi.item.pszText = NULL;
4030  tvdi.item.cchTextMax = 0;
4031  }
4032 
4033  bCommit = TREEVIEW_SendRealNotify(infoPtr, TVN_ENDLABELEDITW, &tvdi.hdr);
4034 
4035  if (!bCancel && bCommit) /* Apply the changes */
4036  {
4037  if (!infoPtr->bNtfUnicode)
4038  {
4039  DWORD len = MultiByteToWideChar( CP_ACP, 0, (LPSTR)tmpText, -1, NULL, 0 );
4040  newText = heap_alloc(len * sizeof(WCHAR));
4041  MultiByteToWideChar( CP_ACP, 0, (LPSTR)tmpText, -1, newText, len );
4042  iLength = len - 1;
4043  }
4044 
4045  if (strcmpW(newText, editedItem->pszText) != 0)
4046  {
4047  WCHAR *ptr = heap_realloc(editedItem->pszText, sizeof(WCHAR)*(iLength + 1));
4048  if (ptr == NULL)
4049  {
4050  ERR("OutOfMemory, cannot allocate space for label\n");
4051  if (newText != tmpText) heap_free(newText);
4052  DestroyWindow(infoPtr->hwndEdit);
4053  infoPtr->hwndEdit = 0;
4054  infoPtr->editItem = NULL;
4055  return FALSE;
4056  }
4057  else
4058  {
4059  editedItem->pszText = ptr;
4060  editedItem->cchTextMax = iLength + 1;
4061  strcpyW(editedItem->pszText, newText);
4062  TREEVIEW_ComputeTextWidth(infoPtr, editedItem, 0);
4063  }
4064  }
4065  if (newText != tmpText) heap_free(newText);
4066  }
4067 
4068  ShowWindow(infoPtr->hwndEdit, SW_HIDE);
4069  DestroyWindow(infoPtr->hwndEdit);
4070  infoPtr->hwndEdit = 0;
4071  infoPtr->editItem = NULL;
4072  return TRUE;
4073 }
4074 
4075 static LRESULT
4077 {
4078  if (wParam != TV_EDIT_TIMER)
4079  {
4080  ERR("got unknown timer\n");
4081  return 1;
4082  }
4083 
4084  KillTimer(infoPtr->hwnd, TV_EDIT_TIMER);
4085  infoPtr->Timer &= ~TV_EDIT_TIMER_SET;
4086 
4087  TREEVIEW_EditLabel(infoPtr, infoPtr->selectedItem);
4088 
4089  return 0;
4090 }
4091 
4092 
4093 /* Mouse Tracking/Drag **************************************************/
4094 
4095 /***************************************************************************
4096  * This is quite unusual piece of code, but that's how it's implemented in
4097  * Windows.
4098  */
4099 static LRESULT
4101 {
4102  INT cxDrag = GetSystemMetrics(SM_CXDRAG);
4103  INT cyDrag = GetSystemMetrics(SM_CYDRAG);
4104  RECT r;
4105  MSG msg;
4106 
4107  r.top = pt.y - cyDrag;
4108  r.left = pt.x - cxDrag;
4109  r.bottom = pt.y + cyDrag;
4110  r.right = pt.x + cxDrag;
4111 
4112  SetCapture(infoPtr->hwnd);
4113 
4114  while (1)
4115  {
4116  if (PeekMessageW(&msg, 0, 0, 0, PM_REMOVE | PM_NOYIELD))
4117  {
4118  if (msg.message == WM_MOUSEMOVE)
4119  {
4120  pt.x = (short)LOWORD(msg.lParam);
4121  pt.y = (short)HIWORD(msg.lParam);
4122  if (PtInRect(&r, pt))
4123  continue;
4124  else
4125  {
4126  ReleaseCapture();
4127  return 1;
4128  }
4129  }
4130  else if (msg.message >= WM_LBUTTONDOWN &&
4131  msg.message <= WM_RBUTTONDBLCLK)
4132  {
4133  break;
4134  }
4135 
4136  DispatchMessageW(&msg);
4137  }
4138 
4139  if (GetCapture() != infoPtr->hwnd)
4140  return 0;
4141  }
4142 
4143  ReleaseCapture();
4144  return 0;
4145 }
4146 
4147 
4148 static LRESULT
4150 {
4152  TVHITTESTINFO hit;
4153 
4154  TRACE("\n");
4155  SetFocus(infoPtr->hwnd);
4156 
4157  if (infoPtr->Timer & TV_EDIT_TIMER_SET)
4158  {
4159  /* If there is pending 'edit label' event - kill it now */
4160  KillTimer(infoPtr->hwnd, TV_EDIT_TIMER);
4161  }
4162 
4163  hit.pt.x = (short)LOWORD(lParam);
4164  hit.pt.y = (short)HIWORD(lParam);
4165 
4166  item = TREEVIEW_HitTest(infoPtr, &hit);
4167  if (!item)
4168  return 0;
4169  TRACE("item %d\n", TREEVIEW_GetItemIndex(infoPtr, item));
4170 
4171  if (TREEVIEW_SendSimpleNotify(infoPtr, NM_DBLCLK) == FALSE)
4172  { /* FIXME! */
4173  switch (hit.flags)
4174  {
4175  case TVHT_ONITEMRIGHT:
4176  /* FIXME: we should not have sent NM_DBLCLK in this case. */
4177  break;
4178 
4179  case TVHT_ONITEMINDENT:
4180  if (!(infoPtr->dwStyle & TVS_HASLINES))
4181  {
4182  break;
4183  }
4184  else
4185  {
4186  int level = hit.pt.x / infoPtr->uIndent;
4187  if (!(infoPtr->dwStyle & TVS_LINESATROOT)) level++;
4188 
4189  while (item->iLevel > level)
4190  {
4191  item = item->parent;
4192  }
4193 
4194  /* fall through */
4195  }
4196 
4197  case TVHT_ONITEMLABEL:
4198  case TVHT_ONITEMICON:
4199  case TVHT_ONITEMBUTTON:
4200  TREEVIEW_Toggle(infoPtr, item, TRUE);
4201  break;
4202 
4203  case TVHT_ONITEMSTATEICON:
4204  if (infoPtr->dwStyle & TVS_CHECKBOXES)
4205  TREEVIEW_ToggleItemState(infoPtr, item);
4206  else
4207  TREEVIEW_Toggle(infoPtr, item, TRUE);
4208  break;
4209  }
4210  }
4211  return TRUE;
4212 }
4213 
4214 
4215 static LRESULT
4217 {
4218  BOOL do_track, do_select, bDoLabelEdit;
4219  HWND hwnd = infoPtr->hwnd;
4220  TVHITTESTINFO ht;
4221 
4222  /* If Edit control is active - kill it and return.
4223  * The best way to do it is to set focus to itself.
4224  * Edit control subclassed procedure will automatically call
4225  * EndEditLabelNow.
4226  */
4227  if (infoPtr->hwndEdit)
4228  {
4229  SetFocus(hwnd);
4230  return 0;
4231  }
4232 
4233  ht.pt.x = (short)LOWORD(lParam);
4234  ht.pt.y = (short)HIWORD(lParam);
4235 
4236  TREEVIEW_HitTest(infoPtr, &ht);
4237  TRACE("item %d\n", TREEVIEW_GetItemIndex(infoPtr, ht.hItem));
4238 
4239  /* update focusedItem and redraw both items */
4240  if (ht.hItem)
4241  {
4242  BOOL do_focus;
4243 
4244  if (TREEVIEW_IsFullRowSelect(infoPtr))
4245  do_focus = ht.flags & (TVHT_ONITEMINDENT | TVHT_ONITEM | TVHT_ONITEMRIGHT);
4246  else
4247  do_focus = ht.flags & TVHT_ONITEM;
4248 
4249  if (do_focus)
4250  {
4251  infoPtr->focusedItem = ht.hItem;
4252  TREEVIEW_InvalidateItem(infoPtr, infoPtr->focusedItem);
4253  TREEVIEW_InvalidateItem(infoPtr, infoPtr->selectedItem);
4254  }
4255  }
4256 
4257  if (!(infoPtr->dwStyle & TVS_DISABLEDRAGDROP))
4258  {
4259  if (TREEVIEW_IsFullRowSelect(infoPtr))
4260  do_track = ht.flags & (TVHT_ONITEMINDENT | TVHT_ONITEM | TVHT_ONITEMRIGHT);
4261  else
4262  do_track = ht.flags & TVHT_ONITEM;
4263  }
4264  else
4265  do_track = FALSE;
4266 
4267  /*
4268  * If the style allows editing and the node is already selected
4269  * and the click occurred on the item label...
4270  */
4271  bDoLabelEdit = (infoPtr->dwStyle & TVS_EDITLABELS) &&
4272  (ht.flags & TVHT_ONITEMLABEL) && (infoPtr->selectedItem == ht.hItem);
4273 
4274  /* Send NM_CLICK right away */
4275  if (!do_track && TREEVIEW_SendSimpleNotify(infoPtr, NM_CLICK))
4276  goto setfocus;
4277 
4278  if (ht.flags & TVHT_ONITEMBUTTON)
4279  {
4280  TREEVIEW_Toggle(infoPtr, ht.hItem, TRUE);
4281  goto setfocus;
4282  }
4283  else if (do_track)
4284  { /* if TREEVIEW_TrackMouse == 1 dragging occurred and the cursor left the dragged item's rectangle */
4285  if (TREEVIEW_TrackMouse(infoPtr, ht.pt))
4286  {
4288  infoPtr->dropItem = ht.hItem;
4289 
4290  /* clean up focusedItem as we dragged and won't select this item */
4291  if(infoPtr->focusedItem)
4292  {
4293  /* refresh the item that was focused */
4294  TREEVIEW_InvalidateItem(infoPtr, infoPtr->focusedItem);
4295  infoPtr->focusedItem = NULL;
4296 
4297  /* refresh the selected item to return the filled background */
4298  TREEVIEW_InvalidateItem(infoPtr, infoPtr->selectedItem);
4299  }
4300 
4301  return 0;
4302  }
4303  }
4304 
4305  if (do_track && TREEVIEW_SendSimpleNotify(infoPtr, NM_CLICK))
4306  goto setfocus;
4307 
4308  if (TREEVIEW_IsFullRowSelect(infoPtr))
4310  else
4311  do_select = ht.flags & (TVHT_ONITEMICON | TVHT_ONITEMLABEL);
4312 
4313  if (bDoLabelEdit)
4314  {
4315  if (infoPtr->Timer & TV_EDIT_TIMER_SET)
4316  KillTimer(hwnd, TV_EDIT_TIMER);
4317 
4319  infoPtr->Timer |= TV_EDIT_TIMER_SET;
4320  }
4321  else if (do_select)
4322  {
4323  TREEVIEW_ITEM *selection = infoPtr->selectedItem;
4324 
4325  /* Select the current item */
4327  TREEVIEW_SingleExpand(infoPtr, selection, ht.hItem);
4328  }
4329  else if (ht.flags & TVHT_ONITEMSTATEICON)
4330  {
4331  /* TVS_CHECKBOXES requires us to toggle the current state */
4332  if (infoPtr->dwStyle & TVS_CHECKBOXES)
4333  TREEVIEW_ToggleItemState(infoPtr, ht.hItem);
4334  }
4335 
4336  setfocus:
4337  SetFocus(hwnd);
4338  return 0;
4339 }
4340 
4341 
4342 static LRESULT
4344 {
4345  TVHITTESTINFO ht;
4346 
4347  if (infoPtr->hwndEdit)
4348  {
4349  SetFocus(infoPtr->hwnd);
4350  return 0;
4351  }
4352 
4353  ht.pt.x = (short)LOWORD(lParam);
4354  ht.pt.y = (short)HIWORD(lParam);
4355 
4356  if (TREEVIEW_HitTest(infoPtr, &ht))
4357  {
4358  infoPtr->focusedItem = ht.hItem;
4359  TREEVIEW_InvalidateItem(infoPtr, infoPtr->focusedItem);
4360  TREEVIEW_InvalidateItem(infoPtr, infoPtr->selectedItem);
4361  }
4362 
4363  if (TREEVIEW_TrackMouse(infoPtr, ht.pt))
4364  {
4365  if (ht.hItem)
4366  {
4368  infoPtr->dropItem = ht.hItem;
4369  }
4370  }
4371  else
4372  {
4373  SetFocus(infoPtr->hwnd);
4374  if(!TREEVIEW_SendSimpleNotify(infoPtr, NM_RCLICK))
4375  {
4376  /* Send a WM_CONTEXTMENU message in response to the RBUTTONUP */
4378  (WPARAM)infoPtr->hwnd, (LPARAM)GetMessagePos());
4379  }
4380  }
4381 
4382  if (ht.hItem)
4383  {
4384  TREEVIEW_InvalidateItem(infoPtr, infoPtr->focusedItem);
4385  infoPtr->focusedItem = infoPtr->selectedItem;
4386  TREEVIEW_InvalidateItem(infoPtr, infoPtr->focusedItem);
4387  }
4388 
4389  return 0;
4390 }
4391 
4392 static LRESULT
4394 {
4395  TREEVIEW_ITEM *dragItem = (HTREEITEM)lParam;
4396  INT cx, cy;
4397  HDC hdc, htopdc;
4398  HWND hwtop;
4399  HBITMAP hbmp, hOldbmp;
4400  SIZE size;
4401  RECT rc;
4402  HFONT hOldFont;
4403 
4404  TRACE("\n");
4405 
4406  if (!(infoPtr->himlNormal))
4407  return 0;
4408 
4409  if (!dragItem || !TREEVIEW_ValidItem(infoPtr, dragItem))
4410  return 0;
4411 
4412  TREEVIEW_UpdateDispInfo(infoPtr, dragItem, TVIF_TEXT);
4413 
4414  hwtop = GetDesktopWindow();
4415  htopdc = GetDC(hwtop);
4416  hdc = CreateCompatibleDC(htopdc);
4417 
4418  hOldFont = SelectObject(hdc, infoPtr->hFont);
4419 
4420  if (dragItem->pszText)
4421  GetTextExtentPoint32W(hdc, dragItem->pszText, strlenW(dragItem->pszText),
4422  &size);
4423  else
4424  GetTextExtentPoint32A(hdc, "", 0, &size);
4425 
4426  TRACE("%d %d %s\n", size.cx, size.cy, debugstr_w(dragItem->pszText));
4427  hbmp = CreateCompatibleBitmap(htopdc, size.cx, size.cy);
4428  hOldbmp = SelectObject(hdc, hbmp);
4429 
4430  ImageList_GetIconSize(infoPtr->himlNormal, &cx, &cy);
4431  size.cx += cx;
4432  if (cy > size.cy)
4433  size.cy = cy;
4434 
4435  infoPtr->dragList = ImageList_Create(size.cx, size.cy, ILC_COLOR, 10, 10);
4436  ImageList_Draw(infoPtr->himlNormal, dragItem->iImage, hdc, 0, 0,
4437  ILD_NORMAL);
4438 
4439 /*
4440  ImageList_GetImageInfo (infoPtr->himlNormal, dragItem->hItem, &iminfo);
4441  ImageList_AddMasked (infoPtr->dragList, iminfo.hbmImage, CLR_DEFAULT);
4442 */
4443 
4444 /* draw item text */
4445 
4446  SetRect(&rc, cx, 0, size.cx, size.cy);
4447 
4448  if (dragItem->pszText)
4449  DrawTextW(hdc, dragItem->pszText, strlenW(dragItem->pszText), &rc,
4450  DT_LEFT);
4451 
4452  SelectObject(hdc, hOldFont);
4453  SelectObject(hdc, hOldbmp);
4454 
4455  ImageList_Add(infoPtr->dragList, hbmp, 0);
4456 
4457  DeleteDC(hdc);
4458  DeleteObject(hbmp);
4459  ReleaseDC(hwtop, htopdc);
4460 
4461  return (LRESULT)infoPtr->dragList;
4462 }
4463 
4464 /* Selection ************************************************************/
4465 
4466 static LRESULT
4468  INT cause)
4469 {
4470  TREEVIEW_ITEM *prevSelect;
4471 
4472  assert(newSelect == NULL || TREEVIEW_ValidItem(infoPtr, newSelect));
4473 
4474  TRACE("Entering item %p (%s), flag 0x%x, cause 0x%x, state 0x%x\n",
4475  newSelect, TREEVIEW_ItemName(newSelect), action, cause,
4476  newSelect ? newSelect->state : 0);
4477 
4478  /* reset and redraw focusedItem if focusedItem was set so we don't */
4479  /* have to worry about the previously focused item when we set a new one */
4480  TREEVIEW_InvalidateItem(infoPtr, infoPtr->focusedItem);
4481  infoPtr->focusedItem = NULL;
4482 
4483  switch (action)
4484  {
4486  FIXME("TVSI_NOSINGLEEXPAND specified.\n");
4487  /* Fall through */
4488  case TVGN_CARET:
4489  prevSelect = infoPtr->selectedItem;
4490 
4491  if (prevSelect == newSelect) {
4492  TREEVIEW_EnsureVisible(infoPtr, infoPtr->selectedItem, FALSE);
4493  break;
4494  }
4495 
4496  if (TREEVIEW_SendTreeviewNotify(infoPtr,
4498  cause,
4500  prevSelect,
4501  newSelect))
4502  return FALSE;
4503 
4504  if (prevSelect)
4505  prevSelect->state &= ~TVIS_SELECTED;
4506  if (newSelect)
4507  newSelect->state |= TVIS_SELECTED;
4508 
4509  infoPtr->selectedItem = newSelect;
4510 
4511  TREEVIEW_EnsureVisible(infoPtr, infoPtr->selectedItem, FALSE);
4512 
4513  TREEVIEW_InvalidateItem(infoPtr, prevSelect);
4514  TREEVIEW_InvalidateItem(infoPtr, newSelect);
4515 
4518  cause,
4520  prevSelect,
4521  newSelect);
4522  break;
4523 
4524  case TVGN_DROPHILITE:
4525  prevSelect = infoPtr->dropItem;
4526 
4527  if (prevSelect)
4528  prevSelect->state &= ~TVIS_DROPHILITED;
4529 
4530  infoPtr->dropItem = newSelect;
4531 
4532  if (newSelect)
4533  newSelect->state |= TVIS_DROPHILITED;
4534 
4535  TREEVIEW_Invalidate(infoPtr, prevSelect);
4536  TREEVIEW_Invalidate(infoPtr, newSelect);
4537  break;
4538 
4539  case TVGN_FIRSTVISIBLE:
4540  if (newSelect != NULL)
4541  {
4542  TREEVIEW_EnsureVisible(infoPtr, newSelect, FALSE);
4543  TREEVIEW_SetFirstVisible(infoPtr, newSelect, TRUE);
4544  TREEVIEW_Invalidate(infoPtr, NULL);
4545  }
4546  break;
4547  }
4548 
4549  TRACE("Leaving state 0x%x\n", newSelect ? newSelect->state : 0);
4550  return TRUE;
4551 }
4552 
4553 /* FIXME: handle NM_KILLFOCUS etc */
4554 static LRESULT
4556 {
4557  TREEVIEW_ITEM *selection = infoPtr->selectedItem;
4558 
4559  if (item && !TREEVIEW_ValidItem(infoPtr, item))
4560  return FALSE;
4561 
4562  if (item == infoPtr->selectedItem)
4563  return TRUE;
4564 
4565  TRACE("%p (%s) %d\n", item, TREEVIEW_ItemName(item), wParam);
4566 
4567  if (!TREEVIEW_DoSelectItem(infoPtr, wParam, item, TVC_UNKNOWN))
4568  return FALSE;
4569 
4570  TREEVIEW_SingleExpand(infoPtr, selection, item);
4571 
4572  return TRUE;
4573 }
4574 
4575 /*************************************************************************
4576  * TREEVIEW_ProcessLetterKeys
4577  *
4578  * Processes keyboard messages generated by pressing the letter keys
4579  * on the keyboard.
4580  * What this does is perform a case insensitive search from the
4581  * current position with the following quirks:
4582  * - If two chars or more are pressed in quick succession we search
4583  * for the corresponding string (e.g. 'abc').
4584  * - If there is a delay we wipe away the current search string and
4585  * restart with just that char.
4586  * - If the user keeps pressing the same character, whether slowly or
4587  * fast, so that the search string is entirely composed of this
4588  * character ('aaaaa' for instance), then we search for first item
4589  * that starting with that character.
4590  * - If the user types the above character in quick succession, then
4591  * we must also search for the corresponding string ('aaaaa'), and
4592  * go to that string if there is a match.
4593  *
4594  * RETURNS
4595  *
4596  * Zero.
4597  *
4598  * BUGS
4599  *
4600  * - The current implementation has a list of characters it will
4601  * accept and it ignores everything else. In particular it will
4602  * ignore accentuated characters which seems to match what
4603  * Windows does. But I'm not sure it makes sense to follow
4604  * Windows there.
4605  * - We don't sound a beep when the search fails.
4606  * - The search should start from the focused item, not from the selected
4607  * item. One reason for this is to allow for multiple selections in trees.
4608  * But currently infoPtr->focusedItem does not seem very usable.
4609  *
4610  * SEE ALSO
4611  *
4612  * TREEVIEW_ProcessLetterKeys
4613  */
4614 static INT TREEVIEW_ProcessLetterKeys(TREEVIEW_INFO *infoPtr, WPARAM charCode, LPARAM keyData)
4615 {
4616  HTREEITEM nItem;
4617  HTREEITEM endidx,idx;
4618  TVITEMEXW item;
4620  DWORD timestamp,elapsed;
4621 
4622  /* simple parameter checking */
4623  if (!charCode || !keyData) return 0;
4624 
4625  /* only allow the valid WM_CHARs through */
4626  if (!isalnum(charCode) &&
4627  charCode != '.' && charCode != '`' && charCode != '!' &&
4628  charCode != '@' && charCode != '#' && charCode != '$' &&
4629  charCode != '%' && charCode != '^' && charCode != '&' &&
4630  charCode != '*' && charCode != '(' && charCode != ')' &&
4631  charCode != '-' && charCode != '_' && charCode != '+' &&
4632  charCode != '=' && charCode != '\\'&& charCode != ']' &&
4633  charCode != '}' && charCode != '[' && charCode != '{' &&
4634  charCode != '/' && charCode != '?' && charCode != '>' &&
4635  charCode != '<' && charCode != ',' && charCode != '~')
4636  return 0;
4637 
4638  /* compute how much time elapsed since last keypress */
4639  timestamp = GetTickCount();
4640  if (timestamp > infoPtr->lastKeyPressTimestamp) {
4641  elapsed=timestamp-infoPtr->lastKeyPressTimestamp;
4642  } else {
4643  elapsed=infoPtr->lastKeyPressTimestamp-timestamp;
4644  }
4645 
4646  /* update the search parameters */
4647  infoPtr->lastKeyPressTimestamp=timestamp;
4648  if (elapsed < KEY_DELAY) {
4649  if (infoPtr->nSearchParamLength < ARRAY_SIZE(infoPtr->szSearchParam)) {
4650  infoPtr->szSearchParam[infoPtr->nSearchParamLength++]=charCode;
4651  }
4652  if (infoPtr->charCode != charCode) {
4653  infoPtr->charCode=charCode=0;
4654  }
4655  } else {
4656  infoPtr->charCode=charCode;
4657  infoPtr->szSearchParam[0]=charCode;
4658  infoPtr->nSearchParamLength=1;
4659  /* Redundant with the 1 char string */
4660  charCode=0;
4661  }
4662 
4663  /* and search from the current position */
4664  nItem=NULL;
4665  if (infoPtr->selectedItem != NULL) {
4666  endidx=infoPtr->selectedItem;
4667  /* if looking for single character match,
4668  * then we must always move forward
4669  */
4670  if (infoPtr->nSearchParamLength == 1)
4671  idx=TREEVIEW_GetNextListItem(infoPtr,endidx);
4672  else
4673  idx=endidx;
4674  } else {
4675  endidx=NULL;
4676  idx=infoPtr->root->firstChild;
4677  }
4678  do {
4679  /* At the end point, sort out wrapping */
4680  if (idx == NULL) {
4681 
4682  /* If endidx is null, stop at the last item (ie top to bottom) */
4683  if (endidx == NULL)
4684  break;
4685 
4686  /* Otherwise, start again at the very beginning */
4687  idx=infoPtr->root->firstChild;
4688 
4689  /* But if we are stopping on the first child, end now! */
4690  if (idx == endidx) break;
4691  }
4692 
4693  /* get item */
4694  ZeroMemory(&item, sizeof(item));
4695  item.mask = TVIF_TEXT;
4696  item.hItem = idx;
4697  item.pszText = buffer;
4698  item.cchTextMax = sizeof(buffer);
4699  TREEVIEW_GetItemT( infoPtr, &item, TRUE );
4700 
4701  /* check for a match */
4702  if (strncmpiW(item.pszText,infoPtr->szSearchParam,infoPtr->nSearchParamLength) == 0) {
4703  nItem=idx;
4704  break;
4705  } else if ( (charCode != 0) && (nItem == NULL) &&
4706  (nItem != infoPtr->selectedItem) &&
4707  (strncmpiW(item.pszText,infoPtr->szSearchParam,1) == 0) ) {
4708  /* This would work but we must keep looking for a longer match */
4709  nItem=idx;
4710  }
4711  idx=TREEVIEW_GetNextListItem(infoPtr,idx);
4712  } while (idx != endidx);
4713 
4714  if (nItem != NULL) {
4715  if (TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, nItem, TVC_BYKEYBOARD)) {
4716  TREEVIEW_EnsureVisible(infoPtr, nItem, FALSE);
4717  }
4718  }
4719 
4720  return 0;
4721 }
4722 
4723 /* Scrolling ************************************************************/
4724 
4725 static LRESULT
4727 {
4728  int viscount;
4729  BOOL hasFirstVisible = infoPtr->firstVisible != NULL;
4730  HTREEITEM newFirstVisible = NULL;
4731  int visible_pos = -1;
4732 
4733  if (!TREEVIEW_ValidItem(infoPtr, item))
4734  return FALSE;
4735 
4736  if (!ISVISIBLE(item))
4737  {
4738  /* Expand parents as necessary. */
4739  HTREEITEM parent;
4740 
4741  /* see if we are trying to ensure that root is visible */
4742  if((item != infoPtr->root) && TREEVIEW_ValidItem(infoPtr, item))
4743  parent = item->parent;
4744  else
4745  parent = item; /* this item is the topmost item */
4746 
4747  while (parent != infoPtr->root)
4748  {
4749  if (!(parent->state & TVIS_EXPANDED))
4750  TREEVIEW_Expand(infoPtr, parent, FALSE, TRUE);
4751 
4752  parent = parent->parent;
4753  }
4754  }
4755 
4756  viscount = TREEVIEW_GetVisibleCount(infoPtr);
4757 
4758  TRACE("%p (%s) %d - %d viscount(%d)\n", item, TREEVIEW_ItemName(item), item->visibleOrder,
4759  hasFirstVisible ? infoPtr->firstVisible->visibleOrder : -1, viscount);
4760 
4761  if (hasFirstVisible)
4762  visible_pos = item->visibleOrder - infoPtr->firstVisible->visibleOrder;
4763 
4764  if (visible_pos < 0)
4765  {
4766  /* item is before the start of the list: put it at the top. */
4767  newFirstVisible = item;
4768  }
4769  else if (visible_pos >= viscount
4770  /* Sometimes, before we are displayed, GVC is 0, causing us to
4771  * spuriously scroll up. */
4772  && visible_pos > 0 && !(infoPtr->dwStyle & TVS_NOSCROLL) )
4773  {
4774  /* item is past the end of the list. */
4775  int scroll = visible_pos - viscount;
4776 
4777  newFirstVisible = TREEVIEW_GetListItem(infoPtr, infoPtr->firstVisible,
4778  scroll + 1);
4779  }
4780 
4781  if (bHScroll)
4782  {
4783  /* Scroll window so item's text is visible as much as possible */
4784  /* Calculation of amount of extra space is taken from EditLabel code */
4785  INT pos, x;
4786  TEXTMETRICW textMetric;
4787  HDC hdc = GetWindowDC(infoPtr->hwnd);
4788 
4789  x = item->textWidth;
4790 
4791  GetTextMetricsW(hdc, &textMetric);
4792  ReleaseDC(infoPtr->hwnd, hdc);
4793 
4794  x += (textMetric.tmMaxCharWidth * 2);
4795  x = max(x, textMetric.tmMaxCharWidth * 3);
4796 
4797  if (item->textOffset < 0)
4798  pos = item->textOffset;
4799  else if (item->textOffset + x > infoPtr->clientWidth)
4800  {
4801  if (x > infoPtr->clientWidth)
4802  pos = item->textOffset;
4803  else
4804  pos = item->textOffset + x - infoPtr->clientWidth;
4805  }
4806  else
4807  pos = 0;
4808 
4809  TREEVIEW_HScroll(infoPtr, MAKEWPARAM(SB_THUMBPOSITION, infoPtr->scrollX + pos));
4810  }
4811 
4812  if (newFirstVisible != NULL && newFirstVisible != infoPtr->firstVisible)
4813  {
4814  TREEVIEW_SetFirstVisible(infoPtr, newFirstVisible, TRUE);
4815 
4816  return TRUE;
4817  }
4818 
4819  return FALSE;
4820 }
4821 
4822 static VOID
4824  TREEVIEW_ITEM *newFirstVisible,
4825  BOOL bUpdateScrollPos)
4826 {
4827  int gap_size;
4828 
4829  TRACE("%p: %s\n", newFirstVisible, TREEVIEW_ItemName(newFirstVisible));
4830 
4831  if (newFirstVisible != NULL)
4832  {
4833  /* Prevent an empty gap from appearing at the bottom... */
4834  gap_size = TREEVIEW_GetVisibleCount(infoPtr)
4835  - infoPtr->maxVisibleOrder + newFirstVisible->visibleOrder;
4836 
4837  if (gap_size > 0)
4838  {
4839  newFirstVisible = TREEVIEW_GetListItem(infoPtr, newFirstVisible,
4840  -gap_size);
4841 
4842  /* ... unless we just don't have enough items. */
4843  if (newFirstVisible == NULL)