73e5ca0a3c93e5daf41574a0d662837faec1ac70
[reactos.git] / reactos / dll / win32 / comctl32 / treeview.c
1 /* Treeview control
2 *
3 * Copyright 1998 Eric Kohl <ekohl@abo.rhein-zeitung.de>
4 * Copyright 1998,1999 Alex Priem <alexp@sci.kun.nl>
5 * Copyright 1999 Sylvain St-Germain
6 * Copyright 2002 CodeWeavers, Aric Stewart
7 *
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
21 *
22 * NOTES
23 *
24 * Note that TREEVIEW_INFO * and HTREEITEM are the same thing.
25 *
26 * Note2: 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, TVN_SINGLEEXPAND
33 *
34 * missing styles: TVS_FULLROWSELECT, 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 "comctl32.h"
44
45 WINE_DEFAULT_DEBUG_CHANNEL(treeview);
46
47 /* internal structures */
48 typedef struct tagTREEVIEW_INFO
49 {
50 HWND hwnd;
51 HWND hwndNotify; /* Owner window to send notifications to */
52 DWORD dwStyle;
53 HTREEITEM root;
54 UINT uInternalStatus;
55 INT Timer;
56 UINT uNumItems; /* number of valid TREEVIEW_ITEMs */
57 INT cdmode; /* last custom draw setting */
58 UINT uScrollTime; /* max. time for scrolling in milliseconds */
59 BOOL bRedraw; /* if FALSE we validate but don't redraw in TREEVIEW_Paint() */
60
61 UINT uItemHeight; /* item height */
62 BOOL bHeightSet;
63
64 LONG clientWidth; /* width of control window */
65 LONG clientHeight; /* height of control window */
66
67 LONG treeWidth; /* width of visible tree items */
68 LONG treeHeight; /* height of visible tree items */
69
70 UINT uIndent; /* indentation in pixels */
71 HTREEITEM selectedItem; /* handle to selected item or 0 if none */
72 HTREEITEM hotItem; /* handle currently under cursor, 0 if none */
73 HTREEITEM focusedItem; /* item that was under the cursor when WM_LBUTTONDOWN was received */
74 HTREEITEM editItem; /* item being edited with builtin edit box */
75
76 HTREEITEM firstVisible; /* handle to first visible item */
77 LONG maxVisibleOrder;
78 HTREEITEM dropItem; /* handle to item selected by drag cursor */
79 HTREEITEM insertMarkItem; /* item after which insertion mark is placed */
80 BOOL insertBeforeorAfter; /* flag used by TVM_SETINSERTMARK */
81 HIMAGELIST dragList; /* Bitmap of dragged item */
82 LONG scrollX;
83 INT wheelRemainder;
84 COLORREF clrBk;
85 COLORREF clrText;
86 COLORREF clrLine;
87 COLORREF clrInsertMark;
88 HFONT hFont;
89 HFONT hDefaultFont;
90 HFONT hBoldFont;
91 HFONT hUnderlineFont;
92 HFONT hBoldUnderlineFont;
93 HCURSOR hcurHand;
94 HWND hwndToolTip;
95
96 HWND hwndEdit;
97 WNDPROC wpEditOrig; /* orig window proc for subclassing edit */
98 BOOL bIgnoreEditKillFocus;
99 BOOL bLabelChanged;
100
101 BOOL bNtfUnicode; /* TRUE if should send NOTIFY with W */
102 HIMAGELIST himlNormal;
103 int normalImageHeight;
104 int normalImageWidth;
105 HIMAGELIST himlState;
106 int stateImageHeight;
107 int stateImageWidth;
108 HDPA items;
109
110 DWORD lastKeyPressTimestamp;
111 WPARAM charCode;
112 INT nSearchParamLength;
113 WCHAR szSearchParam[ MAX_PATH ];
114 } TREEVIEW_INFO;
115
116 typedef struct _TREEITEM /* HTREEITEM is a _TREEINFO *. */
117 {
118 HTREEITEM parent; /* handle to parent or 0 if at root */
119 HTREEITEM nextSibling; /* handle to next item in list, 0 if last */
120 HTREEITEM firstChild; /* handle to first child or 0 if no child */
121
122 UINT callbackMask;
123 UINT state;
124 UINT stateMask;
125 LPWSTR pszText;
126 int cchTextMax;
127 int iImage;
128 int iSelectedImage;
129 int iExpandedImage;
130 int cChildren;
131 LPARAM lParam;
132 int iIntegral; /* item height multiplier (1 is normal) */
133 int iLevel; /* indentation level:0=root level */
134 HTREEITEM lastChild;
135 HTREEITEM prevSibling; /* handle to prev item in list, 0 if first */
136 RECT rect;
137 LONG linesOffset;
138 LONG stateOffset;
139 LONG imageOffset;
140 LONG textOffset;
141 LONG textWidth; /* horizontal text extent for pszText */
142 LONG visibleOrder; /* visible ordering, 0 is first visible item */
143 const TREEVIEW_INFO *infoPtr; /* tree data this item belongs to */
144 } TREEVIEW_ITEM;
145
146 /******** Defines that TREEVIEW_ProcessLetterKeys uses ****************/
147 #define KEY_DELAY 450
148
149 /* bitflags for infoPtr->uInternalStatus */
150
151 #define TV_HSCROLL 0x01 /* treeview too large to fit in window */
152 #define TV_VSCROLL 0x02 /* (horizontal/vertical) */
153 #define TV_LDRAG 0x04 /* Lbutton pushed to start drag */
154 #define TV_LDRAGGING 0x08 /* Lbutton pushed, mouse moved. */
155 #define TV_RDRAG 0x10 /* ditto Rbutton */
156 #define TV_RDRAGGING 0x20
157
158 /* bitflags for infoPtr->timer */
159
160 #define TV_EDIT_TIMER 2
161 #define TV_EDIT_TIMER_SET 2
162
163 #define TEXT_CALLBACK_SIZE 260
164
165 #define TREEVIEW_LEFT_MARGIN 8
166
167 #define MINIMUM_INDENT 19
168
169 #define CALLBACK_MASK_ALL (TVIF_TEXT|TVIF_CHILDREN|TVIF_IMAGE|TVIF_SELECTEDIMAGE)
170
171 #define STATEIMAGEINDEX(x) (((x) >> 12) & 0x0f)
172 #define OVERLAYIMAGEINDEX(x) (((x) >> 8) & 0x0f)
173 #define ISVISIBLE(x) ((x)->visibleOrder >= 0)
174
175 #define GETLINECOLOR(x) ((x) == CLR_DEFAULT ? comctl32_color.clrGrayText : (x))
176 #define GETBKCOLOR(x) ((x) == CLR_NONE ? comctl32_color.clrWindow : (x))
177 #define GETTXTCOLOR(x) ((x) == CLR_NONE ? comctl32_color.clrWindowText : (x))
178 #define GETINSCOLOR(x) ((x) == CLR_DEFAULT ? comctl32_color.clrBtnText : (x))
179
180 static const WCHAR themeClass[] = { 'T','r','e','e','v','i','e','w',0 };
181
182
183 typedef VOID (*TREEVIEW_ItemEnumFunc)(TREEVIEW_INFO *, TREEVIEW_ITEM *,LPVOID);
184
185
186 static VOID TREEVIEW_Invalidate(const TREEVIEW_INFO *, const TREEVIEW_ITEM *);
187
188 static LRESULT TREEVIEW_DoSelectItem(TREEVIEW_INFO *, INT, HTREEITEM, INT);
189 static VOID TREEVIEW_SetFirstVisible(TREEVIEW_INFO *, TREEVIEW_ITEM *, BOOL);
190 static LRESULT TREEVIEW_EnsureVisible(TREEVIEW_INFO *, HTREEITEM, BOOL);
191 static LRESULT TREEVIEW_EndEditLabelNow(TREEVIEW_INFO *infoPtr, BOOL bCancel);
192 static VOID TREEVIEW_UpdateScrollBars(TREEVIEW_INFO *infoPtr);
193 static LRESULT TREEVIEW_HScroll(TREEVIEW_INFO *, WPARAM);
194
195 /* Random Utilities *****************************************************/
196 static void TREEVIEW_VerifyTree(TREEVIEW_INFO *infoPtr);
197
198 /* Returns the treeview private data if hwnd is a treeview.
199 * Otherwise returns an undefined value. */
200 static inline TREEVIEW_INFO *
201 TREEVIEW_GetInfoPtr(HWND hwnd)
202 {
203 return (TREEVIEW_INFO *)GetWindowLongPtrW(hwnd, 0);
204 }
205
206 /* Don't call this. Nothing wants an item index. */
207 static inline int
208 TREEVIEW_GetItemIndex(const TREEVIEW_INFO *infoPtr, HTREEITEM handle)
209 {
210 return DPA_GetPtrIndex(infoPtr->items, handle);
211 }
212
213 /* Checks if item has changed and needs to be redrawn */
214 static inline BOOL item_changed (const TREEVIEW_ITEM *tiOld, const TREEVIEW_ITEM *tiNew,
215 const TVITEMEXW *tvChange)
216 {
217 /* Number of children has changed */
218 if ((tvChange->mask & TVIF_CHILDREN) && (tiOld->cChildren != tiNew->cChildren))
219 return TRUE;
220
221 /* Image has changed and it's not a callback */
222 if ((tvChange->mask & TVIF_IMAGE) && (tiOld->iImage != tiNew->iImage) &&
223 tiNew->iImage != I_IMAGECALLBACK)
224 return TRUE;
225
226 /* Selected image has changed and it's not a callback */
227 if ((tvChange->mask & TVIF_SELECTEDIMAGE) && (tiOld->iSelectedImage != tiNew->iSelectedImage) &&
228 tiNew->iSelectedImage != I_IMAGECALLBACK)
229 return TRUE;
230
231 if ((tvChange->mask & TVIF_EXPANDEDIMAGE) && (tiOld->iExpandedImage != tiNew->iExpandedImage) &&
232 tiNew->iExpandedImage != I_IMAGECALLBACK)
233 return TRUE;
234
235 /* Text has changed and it's not a callback */
236 if ((tvChange->mask & TVIF_TEXT) && (tiOld->pszText != tiNew->pszText) &&
237 tiNew->pszText != LPSTR_TEXTCALLBACKW)
238 return TRUE;
239
240 /* Indent has changed */
241 if ((tvChange->mask & TVIF_INTEGRAL) && (tiOld->iIntegral != tiNew->iIntegral))
242 return TRUE;
243
244 /* Item state has changed */
245 if ((tvChange->mask & TVIF_STATE) && ((tiOld->state ^ tiNew->state) & tvChange->stateMask ))
246 return TRUE;
247
248 return FALSE;
249 }
250
251 /***************************************************************************
252 * This method checks that handle is an item for this tree.
253 */
254 static BOOL
255 TREEVIEW_ValidItem(const TREEVIEW_INFO *infoPtr, HTREEITEM handle)
256 {
257 if (TREEVIEW_GetItemIndex(infoPtr, handle) == -1)
258 {
259 TRACE("invalid item %p\n", handle);
260 return FALSE;
261 }
262 else
263 return TRUE;
264 }
265
266 static HFONT
267 TREEVIEW_CreateBoldFont(HFONT hOrigFont)
268 {
269 LOGFONTW font;
270
271 GetObjectW(hOrigFont, sizeof(font), &font);
272 font.lfWeight = FW_BOLD;
273 return CreateFontIndirectW(&font);
274 }
275
276 static HFONT
277 TREEVIEW_CreateUnderlineFont(HFONT hOrigFont)
278 {
279 LOGFONTW font;
280
281 GetObjectW(hOrigFont, sizeof(font), &font);
282 font.lfUnderline = TRUE;
283 return CreateFontIndirectW(&font);
284 }
285
286 static HFONT
287 TREEVIEW_CreateBoldUnderlineFont(HFONT hfont)
288 {
289 LOGFONTW font;
290
291 GetObjectW(hfont, sizeof(font), &font);
292 font.lfWeight = FW_BOLD;
293 font.lfUnderline = TRUE;
294 return CreateFontIndirectW(&font);
295 }
296
297 static inline HFONT
298 TREEVIEW_FontForItem(const TREEVIEW_INFO *infoPtr, const TREEVIEW_ITEM *item)
299 {
300 if ((infoPtr->dwStyle & TVS_TRACKSELECT) && (item == infoPtr->hotItem))
301 return item->state & TVIS_BOLD ? infoPtr->hBoldUnderlineFont : infoPtr->hUnderlineFont;
302 if (item->state & TVIS_BOLD)
303 return infoPtr->hBoldFont;
304 return infoPtr->hFont;
305 }
306
307 /* for trace/debugging purposes only */
308 static const char *
309 TREEVIEW_ItemName(const TREEVIEW_ITEM *item)
310 {
311 if (item == NULL) return "<null item>";
312 if (item->pszText == LPSTR_TEXTCALLBACKW) return "<callback>";
313 if (item->pszText == NULL) return "<null>";
314 return debugstr_w(item->pszText);
315 }
316
317 /* An item is not a child of itself. */
318 static BOOL
319 TREEVIEW_IsChildOf(const TREEVIEW_ITEM *parent, const TREEVIEW_ITEM *child)
320 {
321 do
322 {
323 child = child->parent;
324 if (child == parent) return TRUE;
325 } while (child != NULL);
326
327 return FALSE;
328 }
329
330
331 /* Tree Traversal *******************************************************/
332
333 /***************************************************************************
334 * This method returns the last expanded sibling or child child item
335 * of a tree node
336 */
337 static TREEVIEW_ITEM *
338 TREEVIEW_GetLastListItem(const TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
339 {
340 if (!item) return NULL;
341
342 while (item->lastChild)
343 {
344 if (item->state & TVIS_EXPANDED)
345 item = item->lastChild;
346 else
347 break;
348 }
349
350 if (item == infoPtr->root)
351 return NULL;
352
353 return item;
354 }
355
356 /***************************************************************************
357 * This method returns the previous non-hidden item in the list not
358 * considering the tree hierarchy.
359 */
360 static TREEVIEW_ITEM *
361 TREEVIEW_GetPrevListItem(const TREEVIEW_INFO *infoPtr, const TREEVIEW_ITEM *tvItem)
362 {
363 if (tvItem->prevSibling)
364 {
365 /* This item has a prevSibling, get the last item in the sibling's tree. */
366 TREEVIEW_ITEM *upItem = tvItem->prevSibling;
367
368 if ((upItem->state & TVIS_EXPANDED) && upItem->lastChild != NULL)
369 return TREEVIEW_GetLastListItem(infoPtr, upItem->lastChild);
370 else
371 return upItem;
372 }
373 else
374 {
375 /* this item does not have a prevSibling, get the parent */
376 return (tvItem->parent != infoPtr->root) ? tvItem->parent : NULL;
377 }
378 }
379
380
381 /***************************************************************************
382 * This method returns the next physical item in the treeview not
383 * considering the tree hierarchy.
384 */
385 static TREEVIEW_ITEM *
386 TREEVIEW_GetNextListItem(const TREEVIEW_INFO *infoPtr, const TREEVIEW_ITEM *tvItem)
387 {
388 /*
389 * If this item has children and is expanded, return the first child
390 */
391 if ((tvItem->state & TVIS_EXPANDED) && tvItem->firstChild != NULL)
392 {
393 return tvItem->firstChild;
394 }
395
396
397 /*
398 * try to get the sibling
399 */
400 if (tvItem->nextSibling)
401 return tvItem->nextSibling;
402
403 /*
404 * Otherwise, get the parent's sibling.
405 */
406 while (tvItem->parent)
407 {
408 tvItem = tvItem->parent;
409
410 if (tvItem->nextSibling)
411 return tvItem->nextSibling;
412 }
413
414 return NULL;
415 }
416
417 /***************************************************************************
418 * This method returns the nth item starting at the given item. It returns
419 * the last item (or first) we we run out of items.
420 *
421 * Will scroll backward if count is <0.
422 * forward if count is >0.
423 */
424 static TREEVIEW_ITEM *
425 TREEVIEW_GetListItem(const TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item,
426 LONG count)
427 {
428 TREEVIEW_ITEM *(*next_item)(const TREEVIEW_INFO *, const TREEVIEW_ITEM *);
429 TREEVIEW_ITEM *previousItem;
430
431 assert(item != NULL);
432
433 if (count > 0)
434 {
435 next_item = TREEVIEW_GetNextListItem;
436 }
437 else if (count < 0)
438 {
439 count = -count;
440 next_item = TREEVIEW_GetPrevListItem;
441 }
442 else
443 return item;
444
445 do
446 {
447 previousItem = item;
448 item = next_item(infoPtr, item);
449
450 } while (--count && item != NULL);
451
452
453 return item ? item : previousItem;
454 }
455
456 /* Notifications ************************************************************/
457
458 static INT get_notifycode(const TREEVIEW_INFO *infoPtr, INT code)
459 {
460 if (!infoPtr->bNtfUnicode) {
461 switch (code) {
462 case TVN_SELCHANGINGW: return TVN_SELCHANGINGA;
463 case TVN_SELCHANGEDW: return TVN_SELCHANGEDA;
464 case TVN_GETDISPINFOW: return TVN_GETDISPINFOA;
465 case TVN_SETDISPINFOW: return TVN_SETDISPINFOA;
466 case TVN_ITEMEXPANDINGW: return TVN_ITEMEXPANDINGA;
467 case TVN_ITEMEXPANDEDW: return TVN_ITEMEXPANDEDA;
468 case TVN_BEGINDRAGW: return TVN_BEGINDRAGA;
469 case TVN_BEGINRDRAGW: return TVN_BEGINRDRAGA;
470 case TVN_DELETEITEMW: return TVN_DELETEITEMA;
471 case TVN_BEGINLABELEDITW: return TVN_BEGINLABELEDITA;
472 case TVN_ENDLABELEDITW: return TVN_ENDLABELEDITA;
473 case TVN_GETINFOTIPW: return TVN_GETINFOTIPA;
474 }
475 }
476 return code;
477 }
478
479 static inline BOOL
480 TREEVIEW_SendRealNotify(const TREEVIEW_INFO *infoPtr, WPARAM wParam, LPNMHDR pnmh)
481 {
482 TRACE("wParam=%ld, lParam=%p\n", wParam, pnmh);
483 return SendMessageW(infoPtr->hwndNotify, WM_NOTIFY, wParam, (LPARAM)pnmh);
484 }
485
486 static BOOL
487 TREEVIEW_SendSimpleNotify(const TREEVIEW_INFO *infoPtr, UINT code)
488 {
489 NMHDR nmhdr;
490 HWND hwnd = infoPtr->hwnd;
491
492 TRACE("%d\n", code);
493 nmhdr.hwndFrom = hwnd;
494 nmhdr.idFrom = GetWindowLongPtrW(hwnd, GWLP_ID);
495 nmhdr.code = get_notifycode(infoPtr, code);
496
497 return TREEVIEW_SendRealNotify(infoPtr, nmhdr.idFrom, &nmhdr);
498 }
499
500 static VOID
501 TREEVIEW_TVItemFromItem(const TREEVIEW_INFO *infoPtr, UINT mask, TVITEMW *tvItem, TREEVIEW_ITEM *item)
502 {
503 tvItem->mask = mask;
504 tvItem->hItem = item;
505 tvItem->state = item->state;
506 tvItem->stateMask = 0;
507 tvItem->iImage = item->iImage;
508 tvItem->iSelectedImage = item->iSelectedImage;
509 tvItem->cChildren = item->cChildren;
510 tvItem->lParam = item->lParam;
511
512 if(mask & TVIF_TEXT)
513 {
514 if (!infoPtr->bNtfUnicode)
515 {
516 tvItem->cchTextMax = WideCharToMultiByte( CP_ACP, 0, item->pszText, -1, NULL, 0, NULL, NULL );
517 tvItem->pszText = Alloc (tvItem->cchTextMax);
518 WideCharToMultiByte( CP_ACP, 0, item->pszText, -1, (LPSTR)tvItem->pszText, tvItem->cchTextMax, 0, 0 );
519 }
520 else
521 {
522 tvItem->cchTextMax = item->cchTextMax;
523 tvItem->pszText = item->pszText;
524 }
525 }
526 else
527 {
528 tvItem->cchTextMax = 0;
529 tvItem->pszText = NULL;
530 }
531 }
532
533 static BOOL
534 TREEVIEW_SendTreeviewNotify(const TREEVIEW_INFO *infoPtr, UINT code, UINT action,
535 UINT mask, HTREEITEM oldItem, HTREEITEM newItem)
536 {
537 HWND hwnd = infoPtr->hwnd;
538 NMTREEVIEWW nmhdr;
539 BOOL ret;
540
541 TRACE("code:%d action:%x olditem:%p newitem:%p\n",
542 code, action, oldItem, newItem);
543
544 ZeroMemory(&nmhdr, sizeof(NMTREEVIEWW));
545
546 nmhdr.hdr.hwndFrom = hwnd;
547 nmhdr.hdr.idFrom = GetWindowLongPtrW(hwnd, GWLP_ID);
548 nmhdr.hdr.code = get_notifycode(infoPtr, code);
549 nmhdr.action = action;
550
551 if (oldItem)
552 TREEVIEW_TVItemFromItem(infoPtr, mask, &nmhdr.itemOld, oldItem);
553
554 if (newItem)
555 TREEVIEW_TVItemFromItem(infoPtr, mask, &nmhdr.itemNew, newItem);
556
557 nmhdr.ptDrag.x = 0;
558 nmhdr.ptDrag.y = 0;
559
560 ret = TREEVIEW_SendRealNotify(infoPtr, nmhdr.hdr.idFrom, &nmhdr.hdr);
561 if (!infoPtr->bNtfUnicode)
562 {
563 Free(nmhdr.itemOld.pszText);
564 Free(nmhdr.itemNew.pszText);
565 }
566 return ret;
567 }
568
569 static BOOL
570 TREEVIEW_SendTreeviewDnDNotify(const TREEVIEW_INFO *infoPtr, UINT code,
571 HTREEITEM dragItem, POINT pt)
572 {
573 HWND hwnd = infoPtr->hwnd;
574 NMTREEVIEWW nmhdr;
575
576 TRACE("code:%d dragitem:%p\n", code, dragItem);
577
578 nmhdr.hdr.hwndFrom = hwnd;
579 nmhdr.hdr.idFrom = GetWindowLongPtrW(hwnd, GWLP_ID);
580 nmhdr.hdr.code = get_notifycode(infoPtr, code);
581 nmhdr.action = 0;
582 nmhdr.itemNew.mask = TVIF_STATE | TVIF_PARAM | TVIF_HANDLE;
583 nmhdr.itemNew.hItem = dragItem;
584 nmhdr.itemNew.state = dragItem->state;
585 nmhdr.itemNew.lParam = dragItem->lParam;
586
587 nmhdr.ptDrag.x = pt.x;
588 nmhdr.ptDrag.y = pt.y;
589
590 return TREEVIEW_SendRealNotify(infoPtr, nmhdr.hdr.idFrom, &nmhdr.hdr);
591 }
592
593
594 static BOOL
595 TREEVIEW_SendCustomDrawNotify(const TREEVIEW_INFO *infoPtr, DWORD dwDrawStage,
596 HDC hdc, RECT rc)
597 {
598 HWND hwnd = infoPtr->hwnd;
599 NMTVCUSTOMDRAW nmcdhdr;
600 LPNMCUSTOMDRAW nmcd;
601
602 TRACE("drawstage:%x hdc:%p\n", dwDrawStage, hdc);
603
604 nmcd = &nmcdhdr.nmcd;
605 nmcd->hdr.hwndFrom = hwnd;
606 nmcd->hdr.idFrom = GetWindowLongPtrW(hwnd, GWLP_ID);
607 nmcd->hdr.code = NM_CUSTOMDRAW;
608 nmcd->dwDrawStage = dwDrawStage;
609 nmcd->hdc = hdc;
610 nmcd->rc = rc;
611 nmcd->dwItemSpec = 0;
612 nmcd->uItemState = 0;
613 nmcd->lItemlParam = 0;
614 nmcdhdr.clrText = infoPtr->clrText;
615 nmcdhdr.clrTextBk = infoPtr->clrBk;
616 nmcdhdr.iLevel = 0;
617
618 return TREEVIEW_SendRealNotify(infoPtr, nmcd->hdr.idFrom, &nmcdhdr.nmcd.hdr);
619 }
620
621
622
623 /* FIXME: need to find out when the flags in uItemState need to be set */
624
625 static BOOL
626 TREEVIEW_SendCustomDrawItemNotify(const TREEVIEW_INFO *infoPtr, HDC hdc,
627 TREEVIEW_ITEM *item, UINT uItemDrawState,
628 NMTVCUSTOMDRAW *nmcdhdr)
629 {
630 HWND hwnd = infoPtr->hwnd;
631 LPNMCUSTOMDRAW nmcd;
632 DWORD dwDrawStage;
633 DWORD_PTR dwItemSpec;
634 UINT uItemState;
635
636 dwDrawStage = CDDS_ITEM | uItemDrawState;
637 dwItemSpec = (DWORD_PTR)item;
638 uItemState = 0;
639 if (item->state & TVIS_SELECTED)
640 uItemState |= CDIS_SELECTED;
641 if (item == infoPtr->selectedItem)
642 uItemState |= CDIS_FOCUS;
643 if (item == infoPtr->hotItem)
644 uItemState |= CDIS_HOT;
645
646 nmcd = &nmcdhdr->nmcd;
647 nmcd->hdr.hwndFrom = hwnd;
648 nmcd->hdr.idFrom = GetWindowLongPtrW(hwnd, GWLP_ID);
649 nmcd->hdr.code = NM_CUSTOMDRAW;
650 nmcd->dwDrawStage = dwDrawStage;
651 nmcd->hdc = hdc;
652 nmcd->rc = item->rect;
653 nmcd->dwItemSpec = dwItemSpec;
654 nmcd->uItemState = uItemState;
655 nmcd->lItemlParam = item->lParam;
656 nmcdhdr->iLevel = item->iLevel;
657
658 TRACE("drawstage:%x hdc:%p item:%lx, itemstate:%x, lItemlParam:%lx\n",
659 nmcd->dwDrawStage, nmcd->hdc, nmcd->dwItemSpec,
660 nmcd->uItemState, nmcd->lItemlParam);
661
662 return TREEVIEW_SendRealNotify(infoPtr, nmcd->hdr.idFrom, &nmcdhdr->nmcd.hdr);
663 }
664
665 static BOOL
666 TREEVIEW_BeginLabelEditNotify(const TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *editItem)
667 {
668 HWND hwnd = infoPtr->hwnd;
669 NMTVDISPINFOW tvdi;
670 BOOL ret;
671
672 tvdi.hdr.hwndFrom = hwnd;
673 tvdi.hdr.idFrom = GetWindowLongPtrW(hwnd, GWLP_ID);
674 tvdi.hdr.code = get_notifycode(infoPtr, TVN_BEGINLABELEDITW);
675
676 TREEVIEW_TVItemFromItem(infoPtr, TVIF_HANDLE | TVIF_STATE | TVIF_PARAM | TVIF_TEXT,
677 &tvdi.item, editItem);
678
679 ret = TREEVIEW_SendRealNotify(infoPtr, tvdi.hdr.idFrom, &tvdi.hdr);
680
681 if (!infoPtr->bNtfUnicode)
682 Free(tvdi.item.pszText);
683
684 return ret;
685 }
686
687 static void
688 TREEVIEW_UpdateDispInfo(const TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item,
689 UINT mask)
690 {
691 NMTVDISPINFOEXW callback;
692 HWND hwnd = infoPtr->hwnd;
693
694 TRACE("mask=0x%x, callbackmask=0x%x\n", mask, item->callbackMask);
695 mask &= item->callbackMask;
696
697 if (mask == 0) return;
698
699 callback.hdr.hwndFrom = hwnd;
700 callback.hdr.idFrom = GetWindowLongPtrW(hwnd, GWLP_ID);
701 callback.hdr.code = get_notifycode(infoPtr, TVN_GETDISPINFOW);
702
703 /* 'state' always contains valid value, as well as 'lParam'.
704 * All other parameters are uninitialized.
705 */
706 callback.item.pszText = item->pszText;
707 callback.item.cchTextMax = item->cchTextMax;
708 callback.item.mask = mask;
709 callback.item.hItem = item;
710 callback.item.state = item->state;
711 callback.item.lParam = item->lParam;
712
713 /* If text is changed we need to recalculate textWidth */
714 if (mask & TVIF_TEXT)
715 item->textWidth = 0;
716
717 TREEVIEW_SendRealNotify(infoPtr, callback.hdr.idFrom, &callback.hdr);
718 TRACE("resulting code 0x%08x\n", callback.hdr.code);
719
720 /* It may have changed due to a call to SetItem. */
721 mask &= item->callbackMask;
722
723 if ((mask & TVIF_TEXT) && callback.item.pszText != item->pszText)
724 {
725 /* Instead of copying text into our buffer user specified his own */
726 if (!infoPtr->bNtfUnicode && (callback.hdr.code == TVN_GETDISPINFOA)) {
727 LPWSTR newText;
728 int buflen;
729 int len = MultiByteToWideChar( CP_ACP, 0,
730 (LPSTR)callback.item.pszText, -1,
731 NULL, 0);
732 buflen = max((len)*sizeof(WCHAR), TEXT_CALLBACK_SIZE);
733 newText = ReAlloc(item->pszText, buflen);
734
735 TRACE("returned str %s, len=%d, buflen=%d\n",
736 debugstr_a((LPSTR)callback.item.pszText), len, buflen);
737
738 if (newText)
739 {
740 item->pszText = newText;
741 MultiByteToWideChar( CP_ACP, 0,
742 (LPSTR)callback.item.pszText, -1,
743 item->pszText, buflen/sizeof(WCHAR));
744 item->cchTextMax = buflen/sizeof(WCHAR);
745 }
746 /* If ReAlloc fails we have nothing to do, but keep original text */
747 }
748 else {
749 int len = max(lstrlenW(callback.item.pszText) + 1,
750 TEXT_CALLBACK_SIZE);
751 LPWSTR newText = ReAlloc(item->pszText, len);
752
753 TRACE("returned wstr %s, len=%d\n",
754 debugstr_w(callback.item.pszText), len);
755
756 if (newText)
757 {
758 item->pszText = newText;
759 strcpyW(item->pszText, callback.item.pszText);
760 item->cchTextMax = len;
761 }
762 /* If ReAlloc fails we have nothing to do, but keep original text */
763 }
764 }
765 else if (mask & TVIF_TEXT) {
766 /* User put text into our buffer, that is ok unless A string */
767 if (!infoPtr->bNtfUnicode && (callback.hdr.code == TVN_GETDISPINFOA)) {
768 LPWSTR newText;
769 int buflen;
770 int len = MultiByteToWideChar( CP_ACP, 0,
771 (LPSTR)callback.item.pszText, -1,
772 NULL, 0);
773 buflen = max((len)*sizeof(WCHAR), TEXT_CALLBACK_SIZE);
774 newText = Alloc(buflen);
775
776 TRACE("same buffer str %s, len=%d, buflen=%d\n",
777 debugstr_a((LPSTR)callback.item.pszText), len, buflen);
778
779 if (newText)
780 {
781 LPWSTR oldText = item->pszText;
782 item->pszText = newText;
783 MultiByteToWideChar( CP_ACP, 0,
784 (LPSTR)callback.item.pszText, -1,
785 item->pszText, buflen/sizeof(WCHAR));
786 item->cchTextMax = buflen/sizeof(WCHAR);
787 Free(oldText);
788 }
789 }
790 }
791
792 if (mask & TVIF_IMAGE)
793 item->iImage = callback.item.iImage;
794
795 if (mask & TVIF_SELECTEDIMAGE)
796 item->iSelectedImage = callback.item.iSelectedImage;
797
798 if (mask & TVIF_EXPANDEDIMAGE)
799 item->iExpandedImage = callback.item.iExpandedImage;
800
801 if (mask & TVIF_CHILDREN)
802 item->cChildren = callback.item.cChildren;
803
804 if (callback.item.mask & TVIF_STATE)
805 {
806 item->state &= ~callback.item.stateMask;
807 item->state |= (callback.item.state & callback.item.stateMask);
808 }
809
810 /* These members are now permanently set. */
811 if (callback.item.mask & TVIF_DI_SETITEM)
812 item->callbackMask &= ~callback.item.mask;
813 }
814
815 /***************************************************************************
816 * This function uses cChildren field to decide whether the item has
817 * children or not.
818 * Note: if this returns TRUE, the child items may not actually exist,
819 * they could be virtual.
820 *
821 * Just use item->firstChild to check for physical children.
822 */
823 static BOOL
824 TREEVIEW_HasChildren(const TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
825 {
826 TREEVIEW_UpdateDispInfo(infoPtr, item, TVIF_CHILDREN);
827
828 return item->cChildren > 0;
829 }
830
831 static INT TREEVIEW_NotifyFormat (TREEVIEW_INFO *infoPtr, HWND hwndFrom, UINT nCommand)
832 {
833 INT format;
834
835 TRACE("(hwndFrom=%p, nCommand=%d)\n", hwndFrom, nCommand);
836
837 if (nCommand != NF_REQUERY) return 0;
838
839 format = SendMessageW(hwndFrom, WM_NOTIFYFORMAT, (WPARAM)infoPtr->hwnd, NF_QUERY);
840 TRACE("format=%d\n", format);
841
842 /* Invalid format returned by NF_QUERY defaults to ANSI*/
843 if (format != NFR_ANSI && format != NFR_UNICODE)
844 format = NFR_ANSI;
845
846 infoPtr->bNtfUnicode = (format == NFR_UNICODE);
847
848 return format;
849 }
850
851 /* Item Position ********************************************************/
852
853 /* Compute linesOffset, stateOffset, imageOffset, textOffset of an item. */
854 static VOID
855 TREEVIEW_ComputeItemInternalMetrics(const TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
856 {
857 /* has TVS_LINESATROOT and (TVS_HASLINES|TVS_HASBUTTONS) */
858 BOOL lar = ((infoPtr->dwStyle & (TVS_LINESATROOT|TVS_HASLINES|TVS_HASBUTTONS))
859 > TVS_LINESATROOT);
860
861 item->linesOffset = infoPtr->uIndent * (lar ? item->iLevel : item->iLevel - 1)
862 - infoPtr->scrollX;
863 item->stateOffset = item->linesOffset + infoPtr->uIndent;
864 item->imageOffset = item->stateOffset
865 + (STATEIMAGEINDEX(item->state) ? infoPtr->stateImageWidth : 0);
866 item->textOffset = item->imageOffset + infoPtr->normalImageWidth;
867 }
868
869 static VOID
870 TREEVIEW_ComputeTextWidth(const TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item, HDC hDC)
871 {
872 HDC hdc;
873 HFONT hOldFont=0;
874 SIZE sz;
875
876 /* DRAW's OM docker creates items like this */
877 if (item->pszText == NULL)
878 {
879 item->textWidth = 0;
880 return;
881 }
882
883 if (hDC != 0)
884 {
885 hdc = hDC;
886 }
887 else
888 {
889 hdc = GetDC(infoPtr->hwnd);
890 hOldFont = SelectObject(hdc, TREEVIEW_FontForItem(infoPtr, item));
891 }
892
893 GetTextExtentPoint32W(hdc, item->pszText, strlenW(item->pszText), &sz);
894 item->textWidth = sz.cx;
895
896 if (hDC == 0)
897 {
898 SelectObject(hdc, hOldFont);
899 ReleaseDC(0, hdc);
900 }
901 }
902
903 static VOID
904 TREEVIEW_ComputeItemRect(const TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
905 {
906 item->rect.top = infoPtr->uItemHeight *
907 (item->visibleOrder - infoPtr->firstVisible->visibleOrder);
908
909 item->rect.bottom = item->rect.top
910 + infoPtr->uItemHeight * item->iIntegral - 1;
911
912 item->rect.left = 0;
913 item->rect.right = infoPtr->clientWidth;
914 }
915
916 /* We know that only items after start need their order updated. */
917 static void
918 TREEVIEW_RecalculateVisibleOrder(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *start)
919 {
920 TREEVIEW_ITEM *item;
921 int order;
922
923 if (!start)
924 {
925 start = infoPtr->root->firstChild;
926 order = 0;
927 }
928 else
929 order = start->visibleOrder;
930
931 for (item = start; item != NULL;
932 item = TREEVIEW_GetNextListItem(infoPtr, item))
933 {
934 if (!ISVISIBLE(item) && order > 0)
935 TREEVIEW_ComputeItemInternalMetrics(infoPtr, item);
936 item->visibleOrder = order;
937 order += item->iIntegral;
938 }
939
940 infoPtr->maxVisibleOrder = order;
941
942 for (item = start; item != NULL;
943 item = TREEVIEW_GetNextListItem(infoPtr, item))
944 {
945 TREEVIEW_ComputeItemRect(infoPtr, item);
946 }
947 }
948
949
950 /* Update metrics of all items in selected subtree.
951 * root must be expanded
952 */
953 static VOID
954 TREEVIEW_UpdateSubTree(const TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *root)
955 {
956 TREEVIEW_ITEM *sibling;
957 HDC hdc;
958 HFONT hOldFont;
959
960 if (!root->firstChild || !(root->state & TVIS_EXPANDED))
961 return;
962
963 root->state &= ~TVIS_EXPANDED;
964 sibling = TREEVIEW_GetNextListItem(infoPtr, root);
965 root->state |= TVIS_EXPANDED;
966
967 hdc = GetDC(infoPtr->hwnd);
968 hOldFont = SelectObject(hdc, infoPtr->hFont);
969
970 for (; root != sibling;
971 root = TREEVIEW_GetNextListItem(infoPtr, root))
972 {
973 TREEVIEW_ComputeItemInternalMetrics(infoPtr, root);
974
975 if (root->callbackMask & TVIF_TEXT)
976 TREEVIEW_UpdateDispInfo(infoPtr, root, TVIF_TEXT);
977
978 if (root->textWidth == 0)
979 {
980 SelectObject(hdc, TREEVIEW_FontForItem(infoPtr, root));
981 TREEVIEW_ComputeTextWidth(infoPtr, root, hdc);
982 }
983 }
984
985 SelectObject(hdc, hOldFont);
986 ReleaseDC(infoPtr->hwnd, hdc);
987 }
988
989 /* Item Allocation **********************************************************/
990
991 static TREEVIEW_ITEM *
992 TREEVIEW_AllocateItem(const TREEVIEW_INFO *infoPtr)
993 {
994 TREEVIEW_ITEM *newItem = Alloc(sizeof(TREEVIEW_ITEM));
995
996 if (!newItem)
997 return NULL;
998
999 /* I_IMAGENONE would make more sense but this is neither what is
1000 * documented (MSDN doesn't specify) nor what Windows actually does
1001 * (it sets it to zero)... and I can so imagine an application using
1002 * inc/dec to toggle the images. */
1003 newItem->iImage = 0;
1004 newItem->iSelectedImage = 0;
1005 newItem->iExpandedImage = (WORD)I_IMAGENONE;
1006 newItem->infoPtr = infoPtr;
1007
1008 if (DPA_InsertPtr(infoPtr->items, INT_MAX, newItem) == -1)
1009 {
1010 Free(newItem);
1011 return NULL;
1012 }
1013
1014 return newItem;
1015 }
1016
1017 /* Exact opposite of TREEVIEW_AllocateItem. In particular, it does not
1018 * free item->pszText. */
1019 static void
1020 TREEVIEW_FreeItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
1021 {
1022 DPA_DeletePtr(infoPtr->items, DPA_GetPtrIndex(infoPtr->items, item));
1023 if (infoPtr->selectedItem == item)
1024 infoPtr->selectedItem = NULL;
1025 if (infoPtr->hotItem == item)
1026 infoPtr->hotItem = NULL;
1027 if (infoPtr->focusedItem == item)
1028 infoPtr->focusedItem = NULL;
1029 if (infoPtr->firstVisible == item)
1030 infoPtr->firstVisible = NULL;
1031 if (infoPtr->dropItem == item)
1032 infoPtr->dropItem = NULL;
1033 if (infoPtr->insertMarkItem == item)
1034 infoPtr->insertMarkItem = NULL;
1035 Free(item);
1036 }
1037
1038
1039 /* Item Insertion *******************************************************/
1040
1041 /***************************************************************************
1042 * This method inserts newItem before sibling as a child of parent.
1043 * sibling can be NULL, but only if parent has no children.
1044 */
1045 static void
1046 TREEVIEW_InsertBefore(TREEVIEW_ITEM *newItem, TREEVIEW_ITEM *sibling,
1047 TREEVIEW_ITEM *parent)
1048 {
1049 assert(parent != NULL);
1050
1051 if (sibling != NULL)
1052 {
1053 assert(sibling->parent == parent);
1054
1055 if (sibling->prevSibling != NULL)
1056 sibling->prevSibling->nextSibling = newItem;
1057
1058 newItem->prevSibling = sibling->prevSibling;
1059 sibling->prevSibling = newItem;
1060 }
1061 else
1062 newItem->prevSibling = NULL;
1063
1064 newItem->nextSibling = sibling;
1065
1066 if (parent->firstChild == sibling)
1067 parent->firstChild = newItem;
1068
1069 if (parent->lastChild == NULL)
1070 parent->lastChild = newItem;
1071 }
1072
1073 /***************************************************************************
1074 * This method inserts newItem after sibling as a child of parent.
1075 * sibling can be NULL, but only if parent has no children.
1076 */
1077 static void
1078 TREEVIEW_InsertAfter(TREEVIEW_ITEM *newItem, TREEVIEW_ITEM *sibling,
1079 TREEVIEW_ITEM *parent)
1080 {
1081 assert(parent != NULL);
1082
1083 if (sibling != NULL)
1084 {
1085 assert(sibling->parent == parent);
1086
1087 if (sibling->nextSibling != NULL)
1088 sibling->nextSibling->prevSibling = newItem;
1089
1090 newItem->nextSibling = sibling->nextSibling;
1091 sibling->nextSibling = newItem;
1092 }
1093 else
1094 newItem->nextSibling = NULL;
1095
1096 newItem->prevSibling = sibling;
1097
1098 if (parent->lastChild == sibling)
1099 parent->lastChild = newItem;
1100
1101 if (parent->firstChild == NULL)
1102 parent->firstChild = newItem;
1103 }
1104
1105 static BOOL
1106 TREEVIEW_DoSetItemT(const TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item,
1107 const TVITEMEXW *tvItem, BOOL isW)
1108 {
1109 UINT callbackClear = 0;
1110 UINT callbackSet = 0;
1111
1112 TRACE("item %p\n", item);
1113 /* Do this first in case it fails. */
1114 if (tvItem->mask & TVIF_TEXT)
1115 {
1116 item->textWidth = 0; /* force width recalculation */
1117 if (tvItem->pszText != LPSTR_TEXTCALLBACKW && tvItem->pszText != NULL) /* covers != TEXTCALLBACKA too, and undocumented: pszText of NULL also means TEXTCALLBACK */
1118 {
1119 int len;
1120 LPWSTR newText;
1121 if (isW)
1122 len = lstrlenW(tvItem->pszText) + 1;
1123 else
1124 len = MultiByteToWideChar(CP_ACP, 0, (LPSTR)tvItem->pszText, -1, NULL, 0);
1125
1126 newText = ReAlloc(item->pszText, len * sizeof(WCHAR));
1127
1128 if (newText == NULL) return FALSE;
1129
1130 callbackClear |= TVIF_TEXT;
1131
1132 item->pszText = newText;
1133 item->cchTextMax = len;
1134 if (isW)
1135 lstrcpynW(item->pszText, tvItem->pszText, len);
1136 else
1137 MultiByteToWideChar(CP_ACP, 0, (LPSTR)tvItem->pszText, -1,
1138 item->pszText, len);
1139
1140 TRACE("setting text %s, item %p\n", debugstr_w(item->pszText), item);
1141 }
1142 else
1143 {
1144 callbackSet |= TVIF_TEXT;
1145
1146 item->pszText = ReAlloc(item->pszText,
1147 TEXT_CALLBACK_SIZE * sizeof(WCHAR));
1148 item->cchTextMax = TEXT_CALLBACK_SIZE;
1149 TRACE("setting callback, item %p\n", item);
1150 }
1151 }
1152
1153 if (tvItem->mask & TVIF_CHILDREN)
1154 {
1155 item->cChildren = tvItem->cChildren;
1156
1157 if (item->cChildren == I_CHILDRENCALLBACK)
1158 callbackSet |= TVIF_CHILDREN;
1159 else
1160 callbackClear |= TVIF_CHILDREN;
1161 }
1162
1163 if (tvItem->mask & TVIF_IMAGE)
1164 {
1165 item->iImage = tvItem->iImage;
1166
1167 if (item->iImage == I_IMAGECALLBACK)
1168 callbackSet |= TVIF_IMAGE;
1169 else
1170 callbackClear |= TVIF_IMAGE;
1171 }
1172
1173 if (tvItem->mask & TVIF_SELECTEDIMAGE)
1174 {
1175 item->iSelectedImage = tvItem->iSelectedImage;
1176
1177 if (item->iSelectedImage == I_IMAGECALLBACK)
1178 callbackSet |= TVIF_SELECTEDIMAGE;
1179 else
1180 callbackClear |= TVIF_SELECTEDIMAGE;
1181 }
1182
1183 if (tvItem->mask & TVIF_EXPANDEDIMAGE)
1184 {
1185 item->iExpandedImage = tvItem->iExpandedImage;
1186
1187 if (item->iExpandedImage == I_IMAGECALLBACK)
1188 callbackSet |= TVIF_EXPANDEDIMAGE;
1189 else
1190 callbackClear |= TVIF_EXPANDEDIMAGE;
1191 }
1192
1193 if (tvItem->mask & TVIF_PARAM)
1194 item->lParam = tvItem->lParam;
1195
1196 /* If the application sets TVIF_INTEGRAL without
1197 * supplying a TVITEMEX structure, it's toast. */
1198 if (tvItem->mask & TVIF_INTEGRAL)
1199 item->iIntegral = tvItem->iIntegral;
1200
1201 if (tvItem->mask & TVIF_STATE)
1202 {
1203 TRACE("prevstate,state,mask:%x,%x,%x\n", item->state, tvItem->state,
1204 tvItem->stateMask);
1205 item->state &= ~tvItem->stateMask;
1206 item->state |= (tvItem->state & tvItem->stateMask);
1207 }
1208
1209 if (tvItem->mask & TVIF_STATEEX)
1210 {
1211 FIXME("New extended state: %x\n", tvItem->uStateEx);
1212 }
1213
1214 item->callbackMask |= callbackSet;
1215 item->callbackMask &= ~callbackClear;
1216
1217 return TRUE;
1218 }
1219
1220 /* Note that the new item is pre-zeroed. */
1221 static LRESULT
1222 TREEVIEW_InsertItemT(TREEVIEW_INFO *infoPtr, const TVINSERTSTRUCTW *ptdi, BOOL isW)
1223 {
1224 const TVITEMEXW *tvItem = &ptdi->u.itemex;
1225 HTREEITEM insertAfter;
1226 TREEVIEW_ITEM *newItem, *parentItem;
1227 BOOL bTextUpdated = FALSE;
1228
1229 if (ptdi->hParent == TVI_ROOT || ptdi->hParent == 0)
1230 {
1231 parentItem = infoPtr->root;
1232 }
1233 else
1234 {
1235 parentItem = ptdi->hParent;
1236
1237 if (!TREEVIEW_ValidItem(infoPtr, parentItem))
1238 {
1239 WARN("invalid parent %p\n", parentItem);
1240 return 0;
1241 }
1242 }
1243
1244 insertAfter = ptdi->hInsertAfter;
1245
1246 /* Validate this now for convenience. */
1247 switch ((DWORD_PTR)insertAfter)
1248 {
1249 case (DWORD_PTR)TVI_FIRST:
1250 case (DWORD_PTR)TVI_LAST:
1251 case (DWORD_PTR)TVI_SORT:
1252 break;
1253
1254 default:
1255 if (!TREEVIEW_ValidItem(infoPtr, insertAfter) ||
1256 insertAfter->parent != parentItem)
1257 {
1258 WARN("invalid insert after %p\n", insertAfter);
1259 insertAfter = TVI_LAST;
1260 }
1261 }
1262
1263 TRACE("parent %p position %p: %s\n", parentItem, insertAfter,
1264 (tvItem->mask & TVIF_TEXT)
1265 ? ((tvItem->pszText == LPSTR_TEXTCALLBACKW) ? "<callback>"
1266 : (isW ? debugstr_w(tvItem->pszText) : debugstr_a((LPSTR)tvItem->pszText)))
1267 : "<no label>");
1268
1269 newItem = TREEVIEW_AllocateItem(infoPtr);
1270 if (newItem == NULL)
1271 return 0;
1272
1273 newItem->parent = parentItem;
1274 newItem->iIntegral = 1;
1275 newItem->visibleOrder = -1;
1276
1277 if (!TREEVIEW_DoSetItemT(infoPtr, newItem, tvItem, isW))
1278 return 0;
1279
1280 /* After this point, nothing can fail. (Except for TVI_SORT.) */
1281
1282 infoPtr->uNumItems++;
1283
1284 switch ((DWORD_PTR)insertAfter)
1285 {
1286 case (DWORD_PTR)TVI_FIRST:
1287 {
1288 TREEVIEW_ITEM *originalFirst = parentItem->firstChild;
1289 TREEVIEW_InsertBefore(newItem, parentItem->firstChild, parentItem);
1290 if (infoPtr->firstVisible == originalFirst)
1291 TREEVIEW_SetFirstVisible(infoPtr, newItem, TRUE);
1292 }
1293 break;
1294
1295 case (DWORD_PTR)TVI_LAST:
1296 TREEVIEW_InsertAfter(newItem, parentItem->lastChild, parentItem);
1297 break;
1298
1299 /* hInsertAfter names a specific item we want to insert after */
1300 default:
1301 TREEVIEW_InsertAfter(newItem, insertAfter, insertAfter->parent);
1302 break;
1303
1304 case (DWORD_PTR)TVI_SORT:
1305 {
1306 TREEVIEW_ITEM *aChild;
1307 TREEVIEW_ITEM *previousChild = NULL;
1308 TREEVIEW_ITEM *originalFirst = parentItem->firstChild;
1309 BOOL bItemInserted = FALSE;
1310
1311 aChild = parentItem->firstChild;
1312
1313 bTextUpdated = TRUE;
1314 TREEVIEW_UpdateDispInfo(infoPtr, newItem, TVIF_TEXT);
1315
1316 /* Iterate the parent children to see where we fit in */
1317 while (aChild != NULL)
1318 {
1319 INT comp;
1320
1321 TREEVIEW_UpdateDispInfo(infoPtr, aChild, TVIF_TEXT);
1322 comp = lstrcmpW(newItem->pszText, aChild->pszText);
1323
1324 if (comp < 0) /* we are smaller than the current one */
1325 {
1326 TREEVIEW_InsertBefore(newItem, aChild, parentItem);
1327 if (infoPtr->firstVisible == originalFirst &&
1328 aChild == originalFirst)
1329 TREEVIEW_SetFirstVisible(infoPtr, newItem, TRUE);
1330 bItemInserted = TRUE;
1331 break;
1332 }
1333 else if (comp > 0) /* we are bigger than the current one */
1334 {
1335 previousChild = aChild;
1336
1337 /* This will help us to exit if there is no more sibling */
1338 aChild = (aChild->nextSibling == 0)
1339 ? NULL
1340 : aChild->nextSibling;
1341
1342 /* Look at the next item */
1343 continue;
1344 }
1345 else if (comp == 0)
1346 {
1347 /*
1348 * An item with this name is already existing, therefore,
1349 * we add after the one we found
1350 */
1351 TREEVIEW_InsertAfter(newItem, aChild, parentItem);
1352 bItemInserted = TRUE;
1353 break;
1354 }
1355 }
1356
1357 /*
1358 * we reach the end of the child list and the item has not
1359 * yet been inserted, therefore, insert it after the last child.
1360 */
1361 if ((!bItemInserted) && (aChild == NULL))
1362 TREEVIEW_InsertAfter(newItem, previousChild, parentItem);
1363
1364 break;
1365 }
1366 }
1367
1368
1369 TRACE("new item %p; parent %p, mask %x\n", newItem,
1370 newItem->parent, tvItem->mask);
1371
1372 newItem->iLevel = newItem->parent->iLevel + 1;
1373
1374 if (newItem->parent->cChildren == 0)
1375 newItem->parent->cChildren = 1;
1376
1377 if (infoPtr->dwStyle & TVS_CHECKBOXES)
1378 {
1379 if (STATEIMAGEINDEX(newItem->state) == 0)
1380 newItem->state |= INDEXTOSTATEIMAGEMASK(1);
1381 }
1382
1383 if (infoPtr->firstVisible == NULL)
1384 infoPtr->firstVisible = newItem;
1385
1386 TREEVIEW_VerifyTree(infoPtr);
1387
1388 if (!infoPtr->bRedraw) return (LRESULT)newItem;
1389
1390 if (parentItem == infoPtr->root ||
1391 (ISVISIBLE(parentItem) && parentItem->state & TVIS_EXPANDED))
1392 {
1393 TREEVIEW_ITEM *item;
1394 TREEVIEW_ITEM *prev = TREEVIEW_GetPrevListItem(infoPtr, newItem);
1395
1396 TREEVIEW_RecalculateVisibleOrder(infoPtr, prev);
1397 TREEVIEW_ComputeItemInternalMetrics(infoPtr, newItem);
1398
1399 if (!bTextUpdated)
1400 TREEVIEW_UpdateDispInfo(infoPtr, newItem, TVIF_TEXT);
1401
1402 TREEVIEW_ComputeTextWidth(infoPtr, newItem, 0);
1403 TREEVIEW_UpdateScrollBars(infoPtr);
1404 /*
1405 * if the item was inserted in a visible part of the tree,
1406 * invalidate it, as well as those after it
1407 */
1408 for (item = newItem;
1409 item != NULL;
1410 item = TREEVIEW_GetNextListItem(infoPtr, item))
1411 TREEVIEW_Invalidate(infoPtr, item);
1412 }
1413 else
1414 {
1415 /* refresh treeview if newItem is the first item inserted under parentItem */
1416 if (ISVISIBLE(parentItem) && newItem->prevSibling == newItem->nextSibling)
1417 {
1418 /* parent got '+' - update it */
1419 TREEVIEW_Invalidate(infoPtr, parentItem);
1420 }
1421 }
1422
1423 return (LRESULT)newItem;
1424 }
1425
1426 /* Item Deletion ************************************************************/
1427 static void
1428 TREEVIEW_RemoveItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item);
1429
1430 static void
1431 TREEVIEW_RemoveAllChildren(TREEVIEW_INFO *infoPtr, const TREEVIEW_ITEM *parentItem)
1432 {
1433 TREEVIEW_ITEM *kill = parentItem->firstChild;
1434
1435 while (kill != NULL)
1436 {
1437 TREEVIEW_ITEM *next = kill->nextSibling;
1438
1439 TREEVIEW_RemoveItem(infoPtr, kill);
1440
1441 kill = next;
1442 }
1443
1444 assert(parentItem->cChildren <= 0); /* I_CHILDRENCALLBACK or 0 */
1445 assert(parentItem->firstChild == NULL);
1446 assert(parentItem->lastChild == NULL);
1447 }
1448
1449 static void
1450 TREEVIEW_UnlinkItem(const TREEVIEW_ITEM *item)
1451 {
1452 TREEVIEW_ITEM *parentItem = item->parent;
1453
1454 assert(item != NULL);
1455 assert(item->parent != NULL); /* i.e. it must not be the root */
1456
1457 if (parentItem->firstChild == item)
1458 parentItem->firstChild = item->nextSibling;
1459
1460 if (parentItem->lastChild == item)
1461 parentItem->lastChild = item->prevSibling;
1462
1463 if (parentItem->firstChild == NULL && parentItem->lastChild == NULL
1464 && parentItem->cChildren > 0)
1465 parentItem->cChildren = 0;
1466
1467 if (item->prevSibling)
1468 item->prevSibling->nextSibling = item->nextSibling;
1469
1470 if (item->nextSibling)
1471 item->nextSibling->prevSibling = item->prevSibling;
1472 }
1473
1474 static void
1475 TREEVIEW_RemoveItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
1476 {
1477 TRACE("%p, (%s)\n", item, TREEVIEW_ItemName(item));
1478
1479 if (item->firstChild)
1480 TREEVIEW_RemoveAllChildren(infoPtr, item);
1481
1482 TREEVIEW_SendTreeviewNotify(infoPtr, TVN_DELETEITEMW, TVC_UNKNOWN,
1483 TVIF_HANDLE | TVIF_PARAM, item, 0);
1484
1485 TREEVIEW_UnlinkItem(item);
1486
1487 infoPtr->uNumItems--;
1488
1489 if (item->pszText != LPSTR_TEXTCALLBACKW)
1490 Free(item->pszText);
1491
1492 TREEVIEW_FreeItem(infoPtr, item);
1493 }
1494
1495
1496 /* Empty out the tree. */
1497 static void
1498 TREEVIEW_RemoveTree(TREEVIEW_INFO *infoPtr)
1499 {
1500 TREEVIEW_RemoveAllChildren(infoPtr, infoPtr->root);
1501
1502 assert(infoPtr->uNumItems == 0); /* root isn't counted in uNumItems */
1503 }
1504
1505 static LRESULT
1506 TREEVIEW_DeleteItem(TREEVIEW_INFO *infoPtr, HTREEITEM item)
1507 {
1508 TREEVIEW_ITEM *newSelection = NULL;
1509 TREEVIEW_ITEM *newFirstVisible = NULL;
1510 TREEVIEW_ITEM *parent, *prev = NULL;
1511 BOOL visible = FALSE;
1512
1513 if (item == TVI_ROOT || !item)
1514 {
1515 TRACE("TVI_ROOT\n");
1516 parent = infoPtr->root;
1517 newSelection = NULL;
1518 visible = TRUE;
1519 TREEVIEW_RemoveTree(infoPtr);
1520 }
1521 else
1522 {
1523 if (!TREEVIEW_ValidItem(infoPtr, item))
1524 return FALSE;
1525
1526 TRACE("%p (%s)\n", item, TREEVIEW_ItemName(item));
1527 parent = item->parent;
1528
1529 if (ISVISIBLE(item))
1530 {
1531 prev = TREEVIEW_GetPrevListItem(infoPtr, item);
1532 visible = TRUE;
1533 }
1534
1535 if (infoPtr->selectedItem != NULL
1536 && (item == infoPtr->selectedItem
1537 || TREEVIEW_IsChildOf(item, infoPtr->selectedItem)))
1538 {
1539 if (item->nextSibling)
1540 newSelection = item->nextSibling;
1541 else if (item->parent != infoPtr->root)
1542 newSelection = item->parent;
1543 else
1544 newSelection = item->prevSibling;
1545 TRACE("newSelection = %p\n", newSelection);
1546 }
1547
1548 if (infoPtr->firstVisible == item)
1549 {
1550 if (item->nextSibling)
1551 newFirstVisible = item->nextSibling;
1552 else if (item->prevSibling)
1553 newFirstVisible = item->prevSibling;
1554 else if (item->parent != infoPtr->root)
1555 newFirstVisible = item->parent;
1556 TREEVIEW_SetFirstVisible(infoPtr, NULL, TRUE);
1557 }
1558 else
1559 newFirstVisible = infoPtr->firstVisible;
1560
1561 TREEVIEW_RemoveItem(infoPtr, item);
1562 }
1563
1564 /* Don't change if somebody else already has (infoPtr->selectedItem is cleared by FreeItem). */
1565 if (!infoPtr->selectedItem && newSelection)
1566 {
1567 if (TREEVIEW_ValidItem(infoPtr, newSelection))
1568 TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, newSelection, TVC_UNKNOWN);
1569 }
1570
1571 /* Validate insertMark dropItem.
1572 * hotItem ??? - used for comparison only.
1573 */
1574 if (!TREEVIEW_ValidItem(infoPtr, infoPtr->insertMarkItem))
1575 infoPtr->insertMarkItem = 0;
1576
1577 if (!TREEVIEW_ValidItem(infoPtr, infoPtr->dropItem))
1578 infoPtr->dropItem = 0;
1579
1580 if (!TREEVIEW_ValidItem(infoPtr, newFirstVisible))
1581 newFirstVisible = infoPtr->root->firstChild;
1582
1583 TREEVIEW_VerifyTree(infoPtr);
1584
1585 if (!infoPtr->bRedraw) return TRUE;
1586
1587 if (visible)
1588 {
1589 TREEVIEW_SetFirstVisible(infoPtr, newFirstVisible, TRUE);
1590 TREEVIEW_RecalculateVisibleOrder(infoPtr, prev);
1591 TREEVIEW_UpdateScrollBars(infoPtr);
1592 TREEVIEW_Invalidate(infoPtr, NULL);
1593 }
1594 else if (ISVISIBLE(parent) && !TREEVIEW_HasChildren(infoPtr, parent))
1595 {
1596 /* parent lost '+/-' - update it */
1597 TREEVIEW_Invalidate(infoPtr, parent);
1598 }
1599
1600 return TRUE;
1601 }
1602
1603
1604 /* Get/Set Messages *********************************************************/
1605 static LRESULT
1606 TREEVIEW_SetRedraw(TREEVIEW_INFO* infoPtr, WPARAM wParam)
1607 {
1608 infoPtr->bRedraw = wParam != 0;
1609
1610 if (infoPtr->bRedraw)
1611 {
1612 TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
1613 TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
1614 TREEVIEW_UpdateScrollBars(infoPtr);
1615 TREEVIEW_Invalidate(infoPtr, NULL);
1616 }
1617 return 0;
1618 }
1619
1620 static LRESULT
1621 TREEVIEW_GetIndent(const TREEVIEW_INFO *infoPtr)
1622 {
1623 TRACE("\n");
1624 return infoPtr->uIndent;
1625 }
1626
1627 static LRESULT
1628 TREEVIEW_SetIndent(TREEVIEW_INFO *infoPtr, UINT newIndent)
1629 {
1630 TRACE("\n");
1631
1632 if (newIndent < MINIMUM_INDENT)
1633 newIndent = MINIMUM_INDENT;
1634
1635 if (infoPtr->uIndent != newIndent)
1636 {
1637 infoPtr->uIndent = newIndent;
1638 TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
1639 TREEVIEW_UpdateScrollBars(infoPtr);
1640 TREEVIEW_Invalidate(infoPtr, NULL);
1641 }
1642
1643 return 0;
1644 }
1645
1646
1647 static LRESULT
1648 TREEVIEW_GetToolTips(const TREEVIEW_INFO *infoPtr)
1649 {
1650 TRACE("\n");
1651 return (LRESULT)infoPtr->hwndToolTip;
1652 }
1653
1654 static LRESULT
1655 TREEVIEW_SetToolTips(TREEVIEW_INFO *infoPtr, HWND hwndTT)
1656 {
1657 HWND prevToolTip;
1658
1659 TRACE("\n");
1660 prevToolTip = infoPtr->hwndToolTip;
1661 infoPtr->hwndToolTip = hwndTT;
1662
1663 return (LRESULT)prevToolTip;
1664 }
1665
1666 static LRESULT
1667 TREEVIEW_SetUnicodeFormat(TREEVIEW_INFO *infoPtr, BOOL fUnicode)
1668 {
1669 BOOL rc = infoPtr->bNtfUnicode;
1670 infoPtr->bNtfUnicode = fUnicode;
1671 return rc;
1672 }
1673
1674 static LRESULT
1675 TREEVIEW_GetUnicodeFormat(const TREEVIEW_INFO *infoPtr)
1676 {
1677 return infoPtr->bNtfUnicode;
1678 }
1679
1680 static LRESULT
1681 TREEVIEW_GetScrollTime(const TREEVIEW_INFO *infoPtr)
1682 {
1683 return infoPtr->uScrollTime;
1684 }
1685
1686 static LRESULT
1687 TREEVIEW_SetScrollTime(TREEVIEW_INFO *infoPtr, UINT uScrollTime)
1688 {
1689 UINT uOldScrollTime = infoPtr->uScrollTime;
1690
1691 infoPtr->uScrollTime = min(uScrollTime, 100);
1692
1693 return uOldScrollTime;
1694 }
1695
1696
1697 static LRESULT
1698 TREEVIEW_GetImageList(const TREEVIEW_INFO *infoPtr, WPARAM wParam)
1699 {
1700 TRACE("\n");
1701
1702 switch (wParam)
1703 {
1704 case TVSIL_NORMAL:
1705 return (LRESULT)infoPtr->himlNormal;
1706
1707 case TVSIL_STATE:
1708 return (LRESULT)infoPtr->himlState;
1709
1710 default:
1711 return 0;
1712 }
1713 }
1714
1715 #define TVHEIGHT_MIN 16
1716 #define TVHEIGHT_FONT_ADJUST 3 /* 2 for focus border + 1 for margin some apps assume */
1717
1718 /* Compute the natural height for items. */
1719 static UINT
1720 TREEVIEW_NaturalHeight(const TREEVIEW_INFO *infoPtr)
1721 {
1722 TEXTMETRICW tm;
1723 HDC hdc = GetDC(0);
1724 HFONT hOldFont = SelectObject(hdc, infoPtr->hFont);
1725 UINT height;
1726
1727 /* Height is the maximum of:
1728 * 16 (a hack because our fonts are tiny), and
1729 * The text height + border & margin, and
1730 * The size of the normal image list
1731 */
1732 GetTextMetricsW(hdc, &tm);
1733 SelectObject(hdc, hOldFont);
1734 ReleaseDC(0, hdc);
1735
1736 height = TVHEIGHT_MIN;
1737 if (height < tm.tmHeight + tm.tmExternalLeading + TVHEIGHT_FONT_ADJUST)
1738 height = tm.tmHeight + tm.tmExternalLeading + TVHEIGHT_FONT_ADJUST;
1739 if (height < infoPtr->normalImageHeight)
1740 height = infoPtr->normalImageHeight;
1741
1742 /* Round down, unless we support odd ("non even") heights. */
1743 if (!(infoPtr->dwStyle & TVS_NONEVENHEIGHT))
1744 height &= ~1;
1745
1746 return height;
1747 }
1748
1749 static LRESULT
1750 TREEVIEW_SetImageList(TREEVIEW_INFO *infoPtr, UINT type, HIMAGELIST himlNew)
1751 {
1752 HIMAGELIST himlOld = 0;
1753 int oldWidth = infoPtr->normalImageWidth;
1754 int oldHeight = infoPtr->normalImageHeight;
1755
1756 TRACE("%u,%p\n", type, himlNew);
1757
1758 switch (type)
1759 {
1760 case TVSIL_NORMAL:
1761 himlOld = infoPtr->himlNormal;
1762 infoPtr->himlNormal = himlNew;
1763
1764 if (himlNew)
1765 ImageList_GetIconSize(himlNew, &infoPtr->normalImageWidth,
1766 &infoPtr->normalImageHeight);
1767 else
1768 {
1769 infoPtr->normalImageWidth = 0;
1770 infoPtr->normalImageHeight = 0;
1771 }
1772
1773 break;
1774
1775 case TVSIL_STATE:
1776 himlOld = infoPtr->himlState;
1777 infoPtr->himlState = himlNew;
1778
1779 if (himlNew)
1780 ImageList_GetIconSize(himlNew, &infoPtr->stateImageWidth,
1781 &infoPtr->stateImageHeight);
1782 else
1783 {
1784 infoPtr->stateImageWidth = 0;
1785 infoPtr->stateImageHeight = 0;
1786 }
1787
1788 break;
1789
1790 default:
1791 ERR("unknown imagelist type %u\n", type);
1792 }
1793
1794 if (oldWidth != infoPtr->normalImageWidth ||
1795 oldHeight != infoPtr->normalImageHeight)
1796 {
1797 BOOL bRecalcVisible = FALSE;
1798
1799 if (oldHeight != infoPtr->normalImageHeight &&
1800 !infoPtr->bHeightSet)
1801 {
1802 infoPtr->uItemHeight = TREEVIEW_NaturalHeight(infoPtr);
1803 bRecalcVisible = TRUE;
1804 }
1805
1806 if (infoPtr->normalImageWidth > MINIMUM_INDENT &&
1807 infoPtr->normalImageWidth != infoPtr->uIndent)
1808 {
1809 infoPtr->uIndent = infoPtr->normalImageWidth;
1810 bRecalcVisible = TRUE;
1811 }
1812
1813 if (bRecalcVisible)
1814 TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
1815
1816 TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
1817 TREEVIEW_UpdateScrollBars(infoPtr);
1818 }
1819
1820 TREEVIEW_Invalidate(infoPtr, NULL);
1821
1822 return (LRESULT)himlOld;
1823 }
1824
1825 static LRESULT
1826 TREEVIEW_SetItemHeight(TREEVIEW_INFO *infoPtr, INT newHeight)
1827 {
1828 INT prevHeight = infoPtr->uItemHeight;
1829
1830 TRACE("new=%d, old=%d\n", newHeight, prevHeight);
1831 if (newHeight == -1)
1832 {
1833 infoPtr->uItemHeight = TREEVIEW_NaturalHeight(infoPtr);
1834 infoPtr->bHeightSet = FALSE;
1835 }
1836 else
1837 {
1838 if (newHeight == 0) newHeight = 1;
1839 infoPtr->uItemHeight = newHeight;
1840 infoPtr->bHeightSet = TRUE;
1841 }
1842
1843 /* Round down, unless we support odd ("non even") heights. */
1844 if (!(infoPtr->dwStyle & TVS_NONEVENHEIGHT) && infoPtr->uItemHeight != 1)
1845 {
1846 infoPtr->uItemHeight &= ~1;
1847 TRACE("after rounding=%d\n", infoPtr->uItemHeight);
1848 }
1849
1850 if (infoPtr->uItemHeight != prevHeight)
1851 {
1852 TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
1853 TREEVIEW_UpdateScrollBars(infoPtr);
1854 TREEVIEW_Invalidate(infoPtr, NULL);
1855 }
1856
1857 return prevHeight;
1858 }
1859
1860 static LRESULT
1861 TREEVIEW_GetItemHeight(const TREEVIEW_INFO *infoPtr)
1862 {
1863 TRACE("\n");
1864 return infoPtr->uItemHeight;
1865 }
1866
1867
1868 static LRESULT
1869 TREEVIEW_GetFont(const TREEVIEW_INFO *infoPtr)
1870 {
1871 TRACE("%p\n", infoPtr->hFont);
1872 return (LRESULT)infoPtr->hFont;
1873 }
1874
1875
1876 static INT CALLBACK
1877 TREEVIEW_ResetTextWidth(LPVOID pItem, LPVOID unused)
1878 {
1879 (void)unused;
1880
1881 ((TREEVIEW_ITEM *)pItem)->textWidth = 0;
1882
1883 return 1;
1884 }
1885
1886 static LRESULT
1887 TREEVIEW_SetFont(TREEVIEW_INFO *infoPtr, HFONT hFont, BOOL bRedraw)
1888 {
1889 UINT uHeight = infoPtr->uItemHeight;
1890
1891 TRACE("%p %i\n", hFont, bRedraw);
1892
1893 infoPtr->hFont = hFont ? hFont : infoPtr->hDefaultFont;
1894
1895 DeleteObject(infoPtr->hBoldFont);
1896 DeleteObject(infoPtr->hUnderlineFont);
1897 DeleteObject(infoPtr->hBoldUnderlineFont);
1898 infoPtr->hBoldFont = TREEVIEW_CreateBoldFont(infoPtr->hFont);
1899 infoPtr->hUnderlineFont = TREEVIEW_CreateUnderlineFont(infoPtr->hFont);
1900 infoPtr->hBoldUnderlineFont = TREEVIEW_CreateBoldUnderlineFont(infoPtr->hFont);
1901
1902 if (!infoPtr->bHeightSet)
1903 infoPtr->uItemHeight = TREEVIEW_NaturalHeight(infoPtr);
1904
1905 if (uHeight != infoPtr->uItemHeight)
1906 TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
1907
1908 DPA_EnumCallback(infoPtr->items, TREEVIEW_ResetTextWidth, 0);
1909
1910 TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
1911 TREEVIEW_UpdateScrollBars(infoPtr);
1912
1913 if (bRedraw)
1914 TREEVIEW_Invalidate(infoPtr, NULL);
1915
1916 return 0;
1917 }
1918
1919
1920 static LRESULT
1921 TREEVIEW_GetLineColor(const TREEVIEW_INFO *infoPtr)
1922 {
1923 TRACE("\n");
1924 return (LRESULT)infoPtr->clrLine;
1925 }
1926
1927 static LRESULT
1928 TREEVIEW_SetLineColor(TREEVIEW_INFO *infoPtr, COLORREF color)
1929 {
1930 COLORREF prevColor = infoPtr->clrLine;
1931
1932 TRACE("\n");
1933 infoPtr->clrLine = color;
1934 return (LRESULT)prevColor;
1935 }
1936
1937
1938 static LRESULT
1939 TREEVIEW_GetTextColor(const TREEVIEW_INFO *infoPtr)
1940 {
1941 TRACE("\n");
1942 return (LRESULT)infoPtr->clrText;
1943 }
1944
1945 static LRESULT
1946 TREEVIEW_SetTextColor(TREEVIEW_INFO *infoPtr, COLORREF color)
1947 {
1948 COLORREF prevColor = infoPtr->clrText;
1949
1950 TRACE("\n");
1951 infoPtr->clrText = color;
1952
1953 if (infoPtr->clrText != prevColor)
1954 TREEVIEW_Invalidate(infoPtr, NULL);
1955
1956 return (LRESULT)prevColor;
1957 }
1958
1959
1960 static LRESULT
1961 TREEVIEW_GetBkColor(const TREEVIEW_INFO *infoPtr)
1962 {
1963 TRACE("\n");
1964 return (LRESULT)infoPtr->clrBk;
1965 }
1966
1967 static LRESULT
1968 TREEVIEW_SetBkColor(TREEVIEW_INFO *infoPtr, COLORREF newColor)
1969 {
1970 COLORREF prevColor = infoPtr->clrBk;
1971
1972 TRACE("\n");
1973 infoPtr->clrBk = newColor;
1974
1975 if (newColor != prevColor)
1976 TREEVIEW_Invalidate(infoPtr, NULL);
1977
1978 return (LRESULT)prevColor;
1979 }
1980
1981
1982 static LRESULT
1983 TREEVIEW_GetInsertMarkColor(const TREEVIEW_INFO *infoPtr)
1984 {
1985 TRACE("\n");
1986 return (LRESULT)infoPtr->clrInsertMark;
1987 }
1988
1989 static LRESULT
1990 TREEVIEW_SetInsertMarkColor(TREEVIEW_INFO *infoPtr, COLORREF color)
1991 {
1992 COLORREF prevColor = infoPtr->clrInsertMark;
1993
1994 TRACE("%x\n", color);
1995 infoPtr->clrInsertMark = color;
1996
1997 return (LRESULT)prevColor;
1998 }
1999
2000
2001 static LRESULT
2002 TREEVIEW_SetInsertMark(TREEVIEW_INFO *infoPtr, BOOL wParam, HTREEITEM item)
2003 {
2004 TRACE("%d %p\n", wParam, item);
2005
2006 if (!TREEVIEW_ValidItem(infoPtr, item))
2007 return 0;
2008
2009 infoPtr->insertBeforeorAfter = wParam;
2010 infoPtr->insertMarkItem = item;
2011
2012 TREEVIEW_Invalidate(infoPtr, NULL);
2013
2014 return 1;
2015 }
2016
2017
2018 /************************************************************************
2019 * Some serious braindamage here. lParam is a pointer to both the
2020 * input HTREEITEM and the output RECT.
2021 */
2022 static LRESULT
2023 TREEVIEW_GetItemRect(const TREEVIEW_INFO *infoPtr, BOOL fTextRect, LPRECT lpRect)
2024 {
2025 TREEVIEW_ITEM *item;
2026 const HTREEITEM *pItem = (HTREEITEM *)lpRect;
2027
2028 TRACE("\n");
2029
2030 if (pItem == NULL)
2031 return FALSE;
2032
2033 item = *pItem;
2034 if (!TREEVIEW_ValidItem(infoPtr, item) || !ISVISIBLE(item))
2035 return FALSE;
2036
2037 /*
2038 * If wParam is TRUE return the text size otherwise return
2039 * the whole item size
2040 */
2041 if (fTextRect)
2042 {
2043 /* Windows does not send TVN_GETDISPINFO here. */
2044
2045 lpRect->top = item->rect.top;
2046 lpRect->bottom = item->rect.bottom;
2047
2048 lpRect->left = item->textOffset;
2049 if (!item->textWidth)
2050 TREEVIEW_ComputeTextWidth(infoPtr, item, 0);
2051
2052 lpRect->right = item->textOffset + item->textWidth + 4;
2053 }
2054 else
2055 {
2056 *lpRect = item->rect;
2057 }
2058
2059 TRACE("%s [%s]\n", fTextRect ? "text" : "item", wine_dbgstr_rect(lpRect));
2060
2061 return TRUE;
2062 }
2063
2064 static inline LRESULT
2065 TREEVIEW_GetVisibleCount(const TREEVIEW_INFO *infoPtr)
2066 {
2067 /* Surprise! This does not take integral height into account. */
2068 TRACE("client=%d, item=%d\n", infoPtr->clientHeight, infoPtr->uItemHeight);
2069 return infoPtr->clientHeight / infoPtr->uItemHeight;
2070 }
2071
2072
2073 static LRESULT
2074 TREEVIEW_GetItemT(const TREEVIEW_INFO *infoPtr, LPTVITEMEXW tvItem, BOOL isW)
2075 {
2076 TREEVIEW_ITEM *item = tvItem->hItem;
2077
2078 if (!TREEVIEW_ValidItem(infoPtr, item))
2079 {
2080 if (!item) return FALSE;
2081
2082 TRACE("got item from different tree %p, called from %p\n", item->infoPtr, infoPtr);
2083 infoPtr = item->infoPtr;
2084 if (!TREEVIEW_ValidItem(infoPtr, item)) return FALSE;
2085 }
2086
2087 TREEVIEW_UpdateDispInfo(infoPtr, item, tvItem->mask);
2088
2089 if (tvItem->mask & TVIF_CHILDREN)
2090 {
2091 if (item->cChildren==I_CHILDRENCALLBACK)
2092 FIXME("I_CHILDRENCALLBACK not supported\n");
2093 tvItem->cChildren = item->cChildren;
2094 }
2095
2096 if (tvItem->mask & TVIF_HANDLE)
2097 tvItem->hItem = item;
2098
2099 if (tvItem->mask & TVIF_IMAGE)
2100 tvItem->iImage = item->iImage;
2101
2102 if (tvItem->mask & TVIF_INTEGRAL)
2103 tvItem->iIntegral = item->iIntegral;
2104
2105 /* undocumented: (mask & TVIF_PARAM) ignored and lParam is always set */
2106 tvItem->lParam = item->lParam;
2107
2108 if (tvItem->mask & TVIF_SELECTEDIMAGE)
2109 tvItem->iSelectedImage = item->iSelectedImage;
2110
2111 if (tvItem->mask & TVIF_EXPANDEDIMAGE)
2112 tvItem->iExpandedImage = item->iExpandedImage;
2113
2114 /* undocumented: stateMask and (state & TVIF_STATE) ignored, so state is always set */
2115 tvItem->state = item->state;
2116
2117 if (tvItem->mask & TVIF_TEXT)
2118 {
2119 if (item->pszText == NULL)
2120 {
2121 if (tvItem->cchTextMax > 0)
2122 tvItem->pszText[0] = '\0';
2123 }
2124 else if (isW)
2125 {
2126 if (item->pszText == LPSTR_TEXTCALLBACKW)
2127 {
2128 tvItem->pszText = LPSTR_TEXTCALLBACKW;
2129 FIXME(" GetItem called with LPSTR_TEXTCALLBACK\n");
2130 }
2131 else
2132 {
2133 lstrcpynW(tvItem->pszText, item->pszText, tvItem->cchTextMax);
2134 }
2135 }
2136 else
2137 {
2138 if (item->pszText == LPSTR_TEXTCALLBACKW)
2139 {
2140 tvItem->pszText = (LPWSTR)LPSTR_TEXTCALLBACKA;
2141 FIXME(" GetItem called with LPSTR_TEXTCALLBACK\n");
2142 }
2143 else
2144 {
2145 WideCharToMultiByte(CP_ACP, 0, item->pszText, -1,
2146 (LPSTR)tvItem->pszText, tvItem->cchTextMax, NULL, NULL);
2147 }
2148 }
2149 }
2150
2151 if (tvItem->mask & TVIF_STATEEX)
2152 {
2153 FIXME("Extended item state not supported, returning 0.\n");
2154 tvItem->uStateEx = 0;
2155 }
2156
2157 TRACE("item <%p>, txt %p, img %d, mask %x\n",
2158 item, tvItem->pszText, tvItem->iImage, tvItem->mask);
2159
2160 return TRUE;
2161 }
2162
2163 /* Beware MSDN Library Visual Studio 6.0. It says -1 on failure, 0 on success,
2164 * which is wrong. */
2165 static LRESULT
2166 TREEVIEW_SetItemT(TREEVIEW_INFO *infoPtr, const TVITEMEXW *tvItem, BOOL isW)
2167 {
2168 TREEVIEW_ITEM *item;
2169 TREEVIEW_ITEM originalItem;
2170
2171 item = tvItem->hItem;
2172
2173 TRACE("item %d,mask %x\n", TREEVIEW_GetItemIndex(infoPtr, item),
2174 tvItem->mask);
2175
2176 if (!TREEVIEW_ValidItem(infoPtr, item))
2177 return FALSE;
2178
2179 /* store the original item values */
2180 originalItem = *item;
2181
2182 if (!TREEVIEW_DoSetItemT(infoPtr, item, tvItem, isW))
2183 return FALSE;
2184
2185 /* If the text or TVIS_BOLD was changed, and it is visible, recalculate. */
2186 if ((tvItem->mask & TVIF_TEXT
2187 || (tvItem->mask & TVIF_STATE && tvItem->stateMask & TVIS_BOLD))
2188 && ISVISIBLE(item))
2189 {
2190 TREEVIEW_UpdateDispInfo(infoPtr, item, TVIF_TEXT);
2191 TREEVIEW_ComputeTextWidth(infoPtr, item, 0);
2192 }
2193
2194 if (tvItem->mask != 0 && ISVISIBLE(item))
2195 {
2196 /* The refresh updates everything, but we can't wait until then. */
2197 TREEVIEW_ComputeItemInternalMetrics(infoPtr, item);
2198
2199 /* if any of the item's values changed and it's not a callback, redraw the item */
2200 if (item_changed(&originalItem, item, tvItem))
2201 {
2202 if (tvItem->mask & TVIF_INTEGRAL)
2203 {
2204 TREEVIEW_RecalculateVisibleOrder(infoPtr, item);
2205 TREEVIEW_UpdateScrollBars(infoPtr);
2206
2207 TREEVIEW_Invalidate(infoPtr, NULL);
2208 }
2209 else
2210 {
2211 TREEVIEW_UpdateScrollBars(infoPtr);
2212 TREEVIEW_Invalidate(infoPtr, item);
2213 }
2214 }
2215 }
2216
2217 return TRUE;
2218 }
2219
2220 static LRESULT
2221 TREEVIEW_GetItemState(const TREEVIEW_INFO *infoPtr, HTREEITEM item, UINT mask)
2222 {
2223 TRACE("\n");
2224
2225 if (!item || !TREEVIEW_ValidItem(infoPtr, item))
2226 return 0;
2227
2228 return (item->state & mask);
2229 }
2230
2231 static LRESULT
2232 TREEVIEW_GetNextItem(const TREEVIEW_INFO *infoPtr, UINT which, HTREEITEM item)
2233 {
2234 TREEVIEW_ITEM *retval;
2235
2236 retval = 0;
2237
2238 /* handle all the global data here */
2239 switch (which)
2240 {
2241 case TVGN_CHILD: /* Special case: child of 0 is root */
2242 if (item)
2243 break;
2244 /* fall through */
2245 case TVGN_ROOT:
2246 retval = infoPtr->root->firstChild;
2247 break;
2248
2249 case TVGN_CARET:
2250 retval = infoPtr->selectedItem;
2251 break;
2252
2253 case TVGN_FIRSTVISIBLE:
2254 retval = infoPtr->firstVisible;
2255 break;
2256
2257 case TVGN_DROPHILITE:
2258 retval = infoPtr->dropItem;
2259 break;
2260
2261 case TVGN_LASTVISIBLE:
2262 retval = TREEVIEW_GetLastListItem(infoPtr, infoPtr->root);
2263 break;
2264 }
2265
2266 if (retval)
2267 {
2268 TRACE("flags:%x, returns %p\n", which, retval);
2269 return (LRESULT)retval;
2270 }
2271
2272 if (item == TVI_ROOT) item = infoPtr->root;
2273
2274 if (!TREEVIEW_ValidItem(infoPtr, item))
2275 return FALSE;
2276
2277 switch (which)
2278 {
2279 case TVGN_NEXT:
2280 retval = item->nextSibling;
2281 break;
2282 case TVGN_PREVIOUS:
2283 retval = item->prevSibling;
2284 break;
2285 case TVGN_PARENT:
2286 retval = (item->parent != infoPtr->root) ? item->parent : NULL;
2287 break;
2288 case TVGN_CHILD:
2289 retval = item->firstChild;
2290 break;
2291 case TVGN_NEXTVISIBLE:
2292 retval = TREEVIEW_GetNextListItem(infoPtr, item);
2293 break;
2294 case TVGN_PREVIOUSVISIBLE:
2295 retval = TREEVIEW_GetPrevListItem(infoPtr, item);
2296 break;
2297 default:
2298 TRACE("Unknown msg %x,item %p\n", which, item);
2299 break;
2300 }
2301
2302 TRACE("flags:%x, item %p;returns %p\n", which, item, retval);
2303 return (LRESULT)retval;
2304 }
2305
2306
2307 static LRESULT
2308 TREEVIEW_GetCount(const TREEVIEW_INFO *infoPtr)
2309 {
2310 TRACE(" %d\n", infoPtr->uNumItems);
2311 return (LRESULT)infoPtr->uNumItems;
2312 }
2313
2314 static VOID
2315 TREEVIEW_ToggleItemState(const TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
2316 {
2317 if (infoPtr->dwStyle & TVS_CHECKBOXES)
2318 {
2319 static const unsigned int state_table[] = { 0, 2, 1 };
2320
2321 unsigned int state;
2322
2323 state = STATEIMAGEINDEX(item->state);
2324 TRACE("state:%x\n", state);
2325 item->state &= ~TVIS_STATEIMAGEMASK;
2326
2327 if (state < 3)
2328 state = state_table[state];
2329
2330 item->state |= INDEXTOSTATEIMAGEMASK(state);
2331
2332 TRACE("state:%x\n", state);
2333 TREEVIEW_Invalidate(infoPtr, item);
2334 }
2335 }
2336
2337
2338 /* Painting *************************************************************/
2339
2340 /* Draw the lines and expand button for an item. Also draws one section
2341 * of the line from item's parent to item's parent's next sibling. */
2342 static void
2343 TREEVIEW_DrawItemLines(const TREEVIEW_INFO *infoPtr, HDC hdc, const TREEVIEW_ITEM *item)
2344 {
2345 LONG centerx, centery;
2346 BOOL lar = ((infoPtr->dwStyle
2347 & (TVS_LINESATROOT|TVS_HASLINES|TVS_HASBUTTONS))
2348 > TVS_LINESATROOT);
2349 HBRUSH hbr, hbrOld;
2350 COLORREF clrBk = GETBKCOLOR(infoPtr->clrBk);
2351
2352 if (!lar && item->iLevel == 0)
2353 return;
2354
2355 hbr = CreateSolidBrush(clrBk);
2356 hbrOld = SelectObject(hdc, hbr);
2357
2358 centerx = (item->linesOffset + item->stateOffset) / 2;
2359 centery = (item->rect.top + item->rect.bottom) / 2;
2360
2361 if (infoPtr->dwStyle & TVS_HASLINES)
2362 {
2363 HPEN hOldPen, hNewPen;
2364 HTREEITEM parent;
2365 LOGBRUSH lb;
2366
2367 /* Get a dotted grey pen */
2368 lb.lbStyle = BS_SOLID;
2369 lb.lbColor = GETLINECOLOR(infoPtr->clrLine);
2370 hNewPen = ExtCreatePen(PS_COSMETIC|PS_ALTERNATE, 1, &lb, 0, NULL);
2371 hOldPen = SelectObject(hdc, hNewPen);
2372
2373 /* Make sure the center is on a dot (using +2 instead
2374 * of +1 gives us pixel-by-pixel compat with native) */
2375 centery = (centery + 2) & ~1;
2376
2377 MoveToEx(hdc, item->stateOffset, centery, NULL);
2378 LineTo(hdc, centerx - 1, centery);
2379
2380 if (item->prevSibling || item->parent != infoPtr->root)
2381 {
2382 MoveToEx(hdc, centerx, item->rect.top, NULL);
2383 LineTo(hdc, centerx, centery);
2384 }
2385
2386 if (item->nextSibling)
2387 {
2388 MoveToEx(hdc, centerx, centery, NULL);
2389 LineTo(hdc, centerx, item->rect.bottom + 1);
2390 }
2391
2392 /* Draw the line from our parent to its next sibling. */
2393 parent = item->parent;
2394 while (parent != infoPtr->root)
2395 {
2396 int pcenterx = (parent->linesOffset + parent->stateOffset) / 2;
2397
2398 if (parent->nextSibling
2399 /* skip top-levels unless TVS_LINESATROOT */
2400 && parent->stateOffset > parent->linesOffset)
2401 {
2402 MoveToEx(hdc, pcenterx, item->rect.top, NULL);
2403 LineTo(hdc, pcenterx, item->rect.bottom + 1);
2404 }
2405
2406 parent = parent->parent;
2407 }
2408
2409 SelectObject(hdc, hOldPen);
2410 DeleteObject(hNewPen);
2411 }
2412
2413 /*
2414 * Display the (+/-) signs
2415 */
2416
2417 if (infoPtr->dwStyle & TVS_HASBUTTONS)
2418 {
2419 if (item->cChildren)
2420 {
2421 HTHEME theme = GetWindowTheme(infoPtr->hwnd);
2422 if (theme)
2423 {
2424 RECT glyphRect = item->rect;
2425 glyphRect.left = item->linesOffset;
2426 glyphRect.right = item->stateOffset;
2427 DrawThemeBackground (theme, hdc, TVP_GLYPH,
2428 (item->state & TVIS_EXPANDED) ? GLPS_OPENED : GLPS_CLOSED,
2429 &glyphRect, NULL);
2430 }
2431 else
2432 {
2433 LONG height = item->rect.bottom - item->rect.top;
2434 LONG width = item->stateOffset - item->linesOffset;
2435 LONG rectsize = min(height, width) / 4;
2436 /* plussize = ceil(rectsize * 3/4) */
2437 LONG plussize = (rectsize + 1) * 3 / 4;
2438
2439 HPEN new_pen = CreatePen(PS_SOLID, 0, GETLINECOLOR(infoPtr->clrLine));
2440 HPEN old_pen = SelectObject(hdc, new_pen);
2441
2442 Rectangle(hdc, centerx - rectsize - 1, centery - rectsize - 1,
2443 centerx + rectsize + 2, centery + rectsize + 2);
2444
2445 SelectObject(hdc, old_pen);
2446 DeleteObject(new_pen);
2447
2448 /* draw +/- signs with current text color */
2449 new_pen = CreatePen(PS_SOLID, 0, GETTXTCOLOR(infoPtr->clrText));
2450 old_pen = SelectObject(hdc, new_pen);
2451
2452 if (height < 18 || width < 18)
2453 {
2454 MoveToEx(hdc, centerx - plussize + 1, centery, NULL);
2455 LineTo(hdc, centerx + plussize, centery);
2456
2457 if (!(item->state & TVIS_EXPANDED) ||
2458 (item->state & TVIS_EXPANDPARTIAL))
2459 {
2460 MoveToEx(hdc, centerx, centery - plussize + 1, NULL);
2461 LineTo(hdc, centerx, centery + plussize);
2462 }
2463 }
2464 else
2465 {
2466 Rectangle(hdc, centerx - plussize + 1, centery - 1,
2467 centerx + plussize, centery + 2);
2468
2469 if (!(item->state & TVIS_EXPANDED) ||
2470 (item->state & TVIS_EXPANDPARTIAL))
2471 {
2472 Rectangle(hdc, centerx - 1, centery - plussize + 1,
2473 centerx + 2, centery + plussize);
2474 SetPixel(hdc, centerx - 1, centery, clrBk);
2475 SetPixel(hdc, centerx + 1, centery, clrBk);
2476 }
2477 }
2478
2479 SelectObject(hdc, old_pen);
2480 DeleteObject(new_pen);
2481 }
2482 }
2483 }
2484 SelectObject(hdc, hbrOld);
2485 DeleteObject(hbr);
2486 }
2487
2488 static void
2489 TREEVIEW_DrawItem(const TREEVIEW_INFO *infoPtr, HDC hdc, TREEVIEW_ITEM *item)
2490 {
2491 INT cditem;
2492 HFONT hOldFont;
2493 COLORREF oldTextColor, oldTextBkColor;
2494 int centery;
2495 BOOL inFocus = (GetFocus() == infoPtr->hwnd);
2496 NMTVCUSTOMDRAW nmcdhdr;
2497
2498 TREEVIEW_UpdateDispInfo(infoPtr, item, CALLBACK_MASK_ALL);
2499
2500 /* - If item is drop target or it is selected and window is in focus -
2501 * use blue background (COLOR_HIGHLIGHT).
2502 * - If item is selected, window is not in focus, but it has style
2503 * TVS_SHOWSELALWAYS - use grey background (COLOR_BTNFACE)
2504 * - Otherwise - use background color
2505 */
2506 if ((item->state & TVIS_DROPHILITED) || ((item == infoPtr->focusedItem) && !(item->state & TVIS_SELECTED)) ||
2507 ((item->state & TVIS_SELECTED) && (!infoPtr->focusedItem || item == infoPtr->focusedItem) &&
2508 (inFocus || (infoPtr->dwStyle & TVS_SHOWSELALWAYS))))
2509 {
2510 if ((item->state & TVIS_DROPHILITED) || inFocus)
2511 {
2512 nmcdhdr.clrTextBk = comctl32_color.clrHighlight;
2513 nmcdhdr.clrText = comctl32_color.clrHighlightText;
2514 }
2515 else
2516 {
2517 nmcdhdr.clrTextBk = comctl32_color.clrBtnFace;
2518 nmcdhdr.clrText = GETTXTCOLOR(infoPtr->clrText);
2519 }
2520 }
2521 else
2522 {
2523 nmcdhdr.clrTextBk = GETBKCOLOR(infoPtr->clrBk);
2524 if ((infoPtr->dwStyle & TVS_TRACKSELECT) && (item == infoPtr->hotItem))
2525 nmcdhdr.clrText = comctl32_color.clrHighlight;
2526 else
2527 nmcdhdr.clrText = GETTXTCOLOR(infoPtr->clrText);
2528 }
2529
2530 hOldFont = SelectObject(hdc, TREEVIEW_FontForItem(infoPtr, item));
2531
2532 /* The custom draw handler can query the text rectangle,
2533 * so get ready. */
2534 /* should already be known, set to 0 when changed */
2535 if (!item->textWidth)
2536 TREEVIEW_ComputeTextWidth(infoPtr, item, hdc);
2537
2538 cditem = 0;
2539
2540 if (infoPtr->cdmode & CDRF_NOTIFYITEMDRAW)
2541 {
2542 cditem = TREEVIEW_SendCustomDrawItemNotify
2543 (infoPtr, hdc, item, CDDS_ITEMPREPAINT, &nmcdhdr);
2544 TRACE("prepaint:cditem-app returns 0x%x\n", cditem);
2545
2546 if (cditem & CDRF_SKIPDEFAULT)
2547 {
2548 SelectObject(hdc, hOldFont);
2549 return;
2550 }
2551 }
2552
2553 if (cditem & CDRF_NEWFONT)
2554 TREEVIEW_ComputeTextWidth(infoPtr, item, hdc);
2555
2556 TREEVIEW_DrawItemLines(infoPtr, hdc, item);
2557
2558 /* Set colors. Custom draw handler can change these so we do this after it. */
2559 oldTextColor = SetTextColor(hdc, nmcdhdr.clrText);
2560 oldTextBkColor = SetBkColor(hdc, nmcdhdr.clrTextBk);
2561
2562 centery = (item->rect.top + item->rect.bottom) / 2;
2563
2564 /*
2565 * Display the images associated with this item
2566 */
2567 {
2568 INT imageIndex;
2569
2570 /* State images are displayed to the left of the Normal image
2571 * image number is in state; zero should be `display no image'.
2572 */
2573 imageIndex = STATEIMAGEINDEX(item->state);
2574
2575 if (infoPtr->himlState && imageIndex)
2576 {
2577 ImageList_Draw(infoPtr->himlState, imageIndex, hdc,
2578 item->stateOffset,
2579 centery - infoPtr->stateImageHeight / 2,
2580 ILD_NORMAL);
2581 }
2582
2583 /* Now, draw the normal image; can be either selected,
2584 * non-selected or expanded image.
2585 */
2586
2587 if ((item->state & TVIS_SELECTED) && (item->iSelectedImage >= 0))
2588 {
2589 /* The item is currently selected */
2590 imageIndex = item->iSelectedImage;
2591 }
2592 else if ((item->state & TVIS_EXPANDED) && (item->iExpandedImage != (WORD)I_IMAGENONE))
2593 {
2594 /* The item is currently not selected but expanded */
2595 imageIndex = item->iExpandedImage;
2596 }
2597 else
2598 {
2599 /* The item is not selected and not expanded */
2600 imageIndex = item->iImage;
2601 }
2602
2603 if (infoPtr->himlNormal)
2604 {
2605 UINT style = item->state & TVIS_CUT ? ILD_SELECTED : ILD_NORMAL;
2606
2607 style |= item->state & TVIS_OVERLAYMASK;
2608
2609 ImageList_DrawEx(infoPtr->himlNormal, imageIndex, hdc,
2610 item->imageOffset, centery - infoPtr->normalImageHeight / 2,
2611 0, 0, infoPtr->clrBk, item->state & TVIS_CUT ? GETBKCOLOR(infoPtr->clrBk) : CLR_DEFAULT,
2612 style);
2613 }
2614 }
2615
2616
2617 /*
2618 * Display the text associated with this item
2619 */
2620
2621 /* Don't paint item's text if it's being edited */
2622 if (!infoPtr->hwndEdit || (infoPtr->selectedItem != item))
2623 {
2624 if (item->pszText)
2625 {
2626 RECT rcText;
2627 UINT align;
2628 SIZE sz;
2629
2630 rcText.top = item->rect.top;
2631 rcText.bottom = item->rect.bottom;
2632 rcText.left = item->textOffset;
2633 rcText.right = rcText.left + item->textWidth + 4;
2634
2635 TRACE("drawing text %s at (%s)\n",
2636 debugstr_w(item->pszText), wine_dbgstr_rect(&rcText));
2637
2638 /* Draw it */
2639 GetTextExtentPoint32W(hdc, item->pszText, strlenW(item->pszText), &sz);
2640
2641 align = SetTextAlign(hdc, TA_LEFT | TA_TOP);
2642 ExtTextOutW(hdc, rcText.left + 2, (rcText.top + rcText.bottom - sz.cy) / 2,
2643 ETO_CLIPPED | ETO_OPAQUE,
2644 &rcText,
2645 item->pszText,
2646 lstrlenW(item->pszText),
2647 NULL);
2648 SetTextAlign(hdc, align);
2649
2650 /* Draw focus box around the selected item */
2651 if ((item == infoPtr->selectedItem) && inFocus)
2652 {
2653 DrawFocusRect(hdc,&rcText);
2654 }
2655 }
2656 }
2657
2658 /* Draw insertion mark if necessary */
2659
2660 if (infoPtr->insertMarkItem)
2661 TRACE("item:%d,mark:%p\n",
2662 TREEVIEW_GetItemIndex(infoPtr, item),
2663 infoPtr->insertMarkItem);
2664
2665 if (item == infoPtr->insertMarkItem)
2666 {
2667 HPEN hNewPen, hOldPen;
2668 int offset;
2669 int left, right;
2670
2671 hNewPen = CreatePen(PS_SOLID, 2, GETINSCOLOR(infoPtr->clrInsertMark));
2672 hOldPen = SelectObject(hdc, hNewPen);
2673
2674 if (infoPtr->insertBeforeorAfter)
2675 offset = item->rect.bottom - 1;
2676 else
2677 offset = item->rect.top + 1;
2678
2679 left = item->textOffset - 2;
2680 right = item->textOffset + item->textWidth + 2;
2681
2682 MoveToEx(hdc, left, offset - 3, NULL);
2683 LineTo(hdc, left, offset + 4);
2684
2685 MoveToEx(hdc, left, offset, NULL);
2686 LineTo(hdc, right + 1, offset);
2687
2688 MoveToEx(hdc, right, offset + 3, NULL);
2689 LineTo(hdc, right, offset - 4);
2690
2691 SelectObject(hdc, hOldPen);
2692 DeleteObject(hNewPen);
2693 }
2694
2695 if (cditem & CDRF_NOTIFYPOSTPAINT)
2696 {
2697 cditem = TREEVIEW_SendCustomDrawItemNotify
2698 (infoPtr, hdc, item, CDDS_ITEMPOSTPAINT, &nmcdhdr);
2699 TRACE("postpaint:cditem-app returns 0x%x\n", cditem);
2700 }
2701
2702 /* Restore the hdc state */
2703 SetTextColor(hdc, oldTextColor);
2704 SetBkColor(hdc, oldTextBkColor);
2705 SelectObject(hdc, hOldFont);
2706 }
2707
2708 /* Computes treeHeight and treeWidth and updates the scroll bars.
2709 */
2710 static void
2711 TREEVIEW_UpdateScrollBars(TREEVIEW_INFO *infoPtr)
2712 {
2713 TREEVIEW_ITEM *item;
2714 HWND hwnd = infoPtr->hwnd;
2715 BOOL vert = FALSE;
2716 BOOL horz = FALSE;
2717 SCROLLINFO si;
2718 LONG scrollX = infoPtr->scrollX;
2719
2720 infoPtr->treeWidth = 0;
2721 infoPtr->treeHeight = 0;
2722
2723 /* We iterate through all visible items in order to get the tree height
2724 * and width */
2725 item = infoPtr->root->firstChild;
2726
2727 while (item != NULL)
2728 {
2729 if (ISVISIBLE(item))
2730 {
2731 /* actually we draw text at textOffset + 2 */
2732 if (2+item->textOffset+item->textWidth > infoPtr->treeWidth)
2733 infoPtr->treeWidth = item->textOffset+item->textWidth+2;
2734
2735 /* This is scroll-adjusted, but we fix this below. */
2736 infoPtr->treeHeight = item->rect.bottom;
2737 }
2738
2739 item = TREEVIEW_GetNextListItem(infoPtr, item);
2740 }
2741
2742 /* Fix the scroll adjusted treeHeight and treeWidth. */
2743 if (infoPtr->root->firstChild)
2744 infoPtr->treeHeight -= infoPtr->root->firstChild->rect.top;
2745
2746 infoPtr->treeWidth += infoPtr->scrollX;
2747
2748 if (infoPtr->dwStyle & TVS_NOSCROLL) return;
2749
2750 /* Adding one scroll bar may take up enough space that it forces us
2751 * to add the other as well. */
2752 if (infoPtr->treeHeight > infoPtr->clientHeight)
2753 {
2754 vert = TRUE;
2755
2756 if (infoPtr->treeWidth
2757 > infoPtr->clientWidth - GetSystemMetrics(SM_CXVSCROLL))
2758 horz = TRUE;
2759 }
2760 else if (infoPtr->treeWidth > infoPtr->clientWidth || infoPtr->scrollX > 0)
2761 horz = TRUE;
2762
2763 if (!vert && horz && infoPtr->treeHeight
2764 > infoPtr->clientHeight - GetSystemMetrics(SM_CYVSCROLL))
2765 vert = TRUE;
2766
2767 if (horz && (infoPtr->dwStyle & TVS_NOHSCROLL)) horz = FALSE;
2768
2769 si.cbSize = sizeof(SCROLLINFO);
2770 si.fMask = SIF_POS|SIF_RANGE|SIF_PAGE;
2771 si.nMin = 0;
2772
2773 if (vert)
2774 {
2775 si.nPage = TREEVIEW_GetVisibleCount(infoPtr);
2776 if ( si.nPage && NULL != infoPtr->firstVisible)
2777 {
2778 si.nPos = infoPtr->firstVisible->visibleOrder;
2779 si.nMax = infoPtr->maxVisibleOrder - 1;
2780
2781 SetScrollInfo(hwnd, SB_VERT, &si, TRUE);
2782
2783 if (!(infoPtr->uInternalStatus & TV_VSCROLL))
2784 ShowScrollBar(hwnd, SB_VERT, TRUE);
2785 infoPtr->uInternalStatus |= TV_VSCROLL;
2786 }
2787 else
2788 {
2789 if (infoPtr->uInternalStatus & TV_VSCROLL)
2790 ShowScrollBar(hwnd, SB_VERT, FALSE);
2791 infoPtr->uInternalStatus &= ~TV_VSCROLL;
2792 }
2793 }
2794 else
2795 {
2796 if (infoPtr->uInternalStatus & TV_VSCROLL)
2797 ShowScrollBar(hwnd, SB_VERT, FALSE);
2798 infoPtr->uInternalStatus &= ~TV_VSCROLL;
2799 }
2800
2801 if (horz)
2802 {
2803 si.nPage = infoPtr->clientWidth;
2804 si.nPos = infoPtr->scrollX;
2805 si.nMax = infoPtr->treeWidth - 1;
2806
2807 if (si.nPos > si.nMax - max( si.nPage-1, 0 ))
2808 {
2809 si.nPos = si.nMax - max( si.nPage-1, 0 );
2810 scrollX = si.nPos;
2811 }
2812
2813 if (!(infoPtr->uInternalStatus & TV_HSCROLL))
2814 ShowScrollBar(hwnd, SB_HORZ, TRUE);
2815 infoPtr->uInternalStatus |= TV_HSCROLL;
2816
2817 SetScrollInfo(hwnd, SB_HORZ, &si, TRUE);
2818 TREEVIEW_HScroll(infoPtr,
2819 MAKEWPARAM(SB_THUMBPOSITION, scrollX));
2820 }
2821 else
2822 {
2823 if (infoPtr->uInternalStatus & TV_HSCROLL)
2824 ShowScrollBar(hwnd, SB_HORZ, FALSE);
2825 infoPtr->uInternalStatus &= ~TV_HSCROLL;
2826
2827 scrollX = 0;
2828 if (infoPtr->scrollX != 0)
2829 {
2830 TREEVIEW_HScroll(infoPtr,
2831 MAKEWPARAM(SB_THUMBPOSITION, scrollX));
2832 }
2833 }
2834
2835 if (!horz)
2836 infoPtr->uInternalStatus &= ~TV_HSCROLL;
2837 }
2838
2839 static void
2840 TREEVIEW_FillBkgnd(const TREEVIEW_INFO *infoPtr, HDC hdc, const RECT *rc)
2841 {
2842 HBRUSH hBrush;
2843 COLORREF clrBk = GETBKCOLOR(infoPtr->clrBk);
2844
2845 hBrush = CreateSolidBrush(clrBk);
2846 FillRect(hdc, rc, hBrush);
2847 DeleteObject(hBrush);
2848 }
2849
2850 /* CtrlSpy doesn't mention this, but CorelDRAW's object manager needs it. */
2851 static LRESULT
2852 TREEVIEW_EraseBackground(const TREEVIEW_INFO *infoPtr, HDC hdc)
2853 {
2854 RECT rect;
2855
2856 TRACE("%p\n", infoPtr);
2857
2858 GetClientRect(infoPtr->hwnd, &rect);
2859 TREEVIEW_FillBkgnd(infoPtr, hdc, &rect);
2860
2861 return 1;
2862 }
2863
2864 static void
2865 TREEVIEW_Refresh(TREEVIEW_INFO *infoPtr, HDC hdc, const RECT *rc)
2866 {
2867 HWND hwnd = infoPtr->hwnd;
2868 RECT rect = *rc;
2869 TREEVIEW_ITEM *item;
2870
2871 if (infoPtr->clientHeight == 0 || infoPtr->clientWidth == 0)
2872 {
2873 TRACE("empty window\n");
2874 return;
2875 }
2876
2877 infoPtr->cdmode = TREEVIEW_SendCustomDrawNotify(infoPtr, CDDS_PREPAINT,
2878 hdc, rect);
2879
2880 if (infoPtr->cdmode == CDRF_SKIPDEFAULT)
2881 {
2882 ReleaseDC(hwnd, hdc);
2883 return;
2884 }
2885
2886 for (item = infoPtr->root->firstChild;
2887 item != NULL;
2888 item = TREEVIEW_GetNextListItem(infoPtr, item))
2889 {
2890 if (ISVISIBLE(item))
2891 {
2892 /* Avoid unneeded calculations */
2893 if (item->rect.top > rect.bottom)
2894 break;
2895 if (item->rect.bottom < rect.top)
2896 continue;
2897
2898 TREEVIEW_DrawItem(infoPtr, hdc, item);
2899 }
2900 }
2901
2902 //
2903 // This is correct, but is causes and infinite loop of WM_PAINT messages, resulting
2904 // in continuous painting of the scroll bar in reactos. Comment out until the real
2905 // bug is found
2906 //
2907 //TREEVIEW_UpdateScrollBars(infoPtr);
2908
2909 if (infoPtr->cdmode & CDRF_NOTIFYPOSTPAINT)
2910 infoPtr->cdmode =
2911 TREEVIEW_SendCustomDrawNotify(infoPtr, CDDS_POSTPAINT, hdc, rect);
2912 }
2913
2914 static inline void
2915 TREEVIEW_InvalidateItem(const TREEVIEW_INFO *infoPtr, const TREEVIEW_ITEM *item)
2916 {
2917 if (item) InvalidateRect(infoPtr->hwnd, &item->rect, TRUE);
2918 }
2919
2920 static void
2921 TREEVIEW_Invalidate(const TREEVIEW_INFO *infoPtr, const TREEVIEW_ITEM *item)
2922 {
2923 if (item)
2924 InvalidateRect(infoPtr->hwnd, &item->rect, TRUE);
2925 else
2926 InvalidateRect(infoPtr->hwnd, NULL, TRUE);
2927 }
2928
2929 static void
2930 TREEVIEW_InitCheckboxes(TREEVIEW_INFO *infoPtr)
2931 {
2932 RECT rc;
2933 HBITMAP hbm, hbmOld;
2934 HDC hdc, hdcScreen;
2935 int nIndex;
2936
2937 infoPtr->himlState = ImageList_Create(16, 16, ILC_COLOR | ILC_MASK, 3, 0);
2938
2939 hdcScreen = GetDC(0);
2940
2941 hdc = CreateCompatibleDC(hdcScreen);
2942 hbm = CreateCompatibleBitmap(hdcScreen, 48, 16);
2943 hbmOld = SelectObject(hdc, hbm);
2944
2945 SetRect(&rc, 0, 0, 48, 16);
2946 FillRect(hdc, &rc, (HBRUSH)(COLOR_WINDOW+1));
2947
2948 SetRect(&rc, 18, 2, 30, 14);
2949 DrawFrameControl(hdc, &rc, DFC_BUTTON,
2950 DFCS_BUTTONCHECK|DFCS_FLAT);
2951
2952 SetRect(&rc, 34, 2, 46, 14);
2953 DrawFrameControl(hdc, &rc, DFC_BUTTON,
2954 DFCS_BUTTONCHECK|DFCS_FLAT|DFCS_CHECKED);
2955
2956 SelectObject(hdc, hbmOld);
2957 nIndex = ImageList_AddMasked(infoPtr->himlState, hbm,
2958 comctl32_color.clrWindow);
2959 TRACE("checkbox index %d\n", nIndex);
2960
2961 DeleteObject(hbm);
2962 DeleteDC(hdc);
2963 ReleaseDC(0, hdcScreen);
2964
2965 infoPtr->stateImageWidth = 16;
2966 infoPtr->stateImageHeight = 16;
2967 }
2968
2969 static void
2970 TREEVIEW_ResetImageStateIndex(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
2971 {
2972 TREEVIEW_ITEM *child = item->firstChild;
2973
2974 item->state &= ~TVIS_STATEIMAGEMASK;
2975 item->state |= INDEXTOSTATEIMAGEMASK(1);
2976
2977 while (child)
2978 {
2979 TREEVIEW_ITEM *next = child->nextSibling;
2980 TREEVIEW_ResetImageStateIndex(infoPtr, child);
2981 child = next;
2982 }
2983 }
2984
2985 static LRESULT
2986 TREEVIEW_Paint(TREEVIEW_INFO *infoPtr, HDC hdc_ref)
2987 {
2988 HDC hdc;
2989 PAINTSTRUCT ps;
2990 RECT rc;
2991
2992 TRACE("(%p %p)\n", infoPtr, hdc_ref);
2993
2994 if ((infoPtr->dwStyle & TVS_CHECKBOXES) && !infoPtr->himlState)
2995 {
2996 TREEVIEW_InitCheckboxes(infoPtr);
2997 TREEVIEW_ResetImageStateIndex(infoPtr, infoPtr->root);
2998
2999 TREEVIEW_EndEditLabelNow(infoPtr, TRUE);
3000 TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
3001 TREEVIEW_UpdateScrollBars(infoPtr);
3002 TREEVIEW_Invalidate(infoPtr, NULL);
3003 }
3004
3005 if (hdc_ref)
3006 {
3007 hdc = hdc_ref;
3008 GetClientRect(infoPtr->hwnd, &rc);
3009 TREEVIEW_FillBkgnd(infoPtr, hdc, &rc);
3010 }
3011 else
3012 {
3013 hdc = BeginPaint(infoPtr->hwnd, &ps);
3014 rc = ps.rcPaint;
3015 if(ps.fErase)
3016 TREEVIEW_FillBkgnd(infoPtr, hdc, &rc);
3017 }
3018
3019 if(infoPtr->bRedraw) /* WM_SETREDRAW sets bRedraw */
3020 TREEVIEW_Refresh(infoPtr, hdc, &rc);
3021
3022 if (!hdc_ref)
3023 EndPaint(infoPtr->hwnd, &ps);
3024
3025 return 0;
3026 }
3027
3028 static LRESULT
3029 TREEVIEW_PrintClient(TREEVIEW_INFO *infoPtr, HDC hdc, DWORD options)
3030 {
3031 FIXME("Partial Stub: (hdc=%p options=0x%08x)\n", hdc, options);
3032
3033 if ((options & PRF_CHECKVISIBLE) && !IsWindowVisible(infoPtr->hwnd))
3034 return 0;
3035
3036 if (options & PRF_ERASEBKGND)
3037 TREEVIEW_EraseBackground(infoPtr, hdc);
3038
3039 if (options & PRF_CLIENT)
3040 {
3041 RECT rc;
3042 GetClientRect(infoPtr->hwnd, &rc);
3043 TREEVIEW_Refresh(infoPtr, hdc, &rc);
3044 }
3045
3046 return 0;
3047 }
3048
3049 /* Sorting **************************************************************/
3050
3051 /***************************************************************************
3052 * Forward the DPA local callback to the treeview owner callback
3053 */
3054 static INT WINAPI
3055 TREEVIEW_CallBackCompare(const TREEVIEW_ITEM *first, const TREEVIEW_ITEM *second,
3056 const TVSORTCB *pCallBackSort)
3057 {
3058 /* Forward the call to the client-defined callback */
3059 return pCallBackSort->lpfnCompare(first->lParam,
3060 second->lParam,
3061 pCallBackSort->lParam);
3062 }
3063
3064 /***************************************************************************
3065 * Treeview native sort routine: sort on item text.
3066 */
3067 static INT WINAPI
3068 TREEVIEW_SortOnName(TREEVIEW_ITEM *first, TREEVIEW_ITEM *second,
3069 const TREEVIEW_INFO *infoPtr)
3070 {
3071 TREEVIEW_UpdateDispInfo(infoPtr, first, TVIF_TEXT);
3072 TREEVIEW_UpdateDispInfo(infoPtr, second, TVIF_TEXT);
3073
3074 if(first->pszText && second->pszText)
3075 return lstrcmpiW(first->pszText, second->pszText);
3076 else if(first->pszText)
3077 return -1;
3078 else if(second->pszText)
3079 return 1;
3080 else
3081 return 0;
3082 }
3083
3084 /* Returns the number of physical children belonging to item. */
3085 static INT
3086 TREEVIEW_CountChildren(const TREEVIEW_ITEM *item)
3087 {
3088 INT cChildren = 0;
3089 HTREEITEM hti;
3090
3091 for (hti = item->firstChild; hti != NULL; hti = hti->nextSibling)
3092 cChildren++;
3093
3094 return cChildren;
3095 }
3096
3097 /* Returns a DPA containing a pointer to each physical child of item in
3098 * sibling order. If item has no children, an empty DPA is returned. */
3099 static HDPA
3100 TREEVIEW_BuildChildDPA(const TREEVIEW_ITEM *item)
3101 {
3102 HTREEITEM child;
3103
3104 HDPA list = DPA_Create(8);
3105 if (list == 0) return NULL;
3106
3107 for (child = item->firstChild; child != NULL; child = child->nextSibling)
3108 {
3109 if (DPA_InsertPtr(list, INT_MAX, child) == -1)
3110 {
3111 DPA_Destroy(list);
3112 return NULL;
3113 }
3114 }
3115
3116 return list;
3117 }
3118
3119 /***************************************************************************
3120 * Setup the treeview structure with regards of the sort method
3121 * and sort the children of the TV item specified in lParam
3122 * fRecurse: currently unused. Should be zero.
3123 * parent: if pSort!=NULL, should equal pSort->hParent.
3124 * otherwise, item which child items are to be sorted.
3125 * pSort: sort method info. if NULL, sort on item text.
3126 * if non-NULL, sort on item's lParam content, and let the
3127 * application decide what that means. See also TVM_SORTCHILDRENCB.
3128 */
3129
3130 static LRESULT
3131 TREEVIEW_Sort(TREEVIEW_INFO *infoPtr, HTREEITEM parent,
3132 LPTVSORTCB pSort)
3133 {
3134 INT cChildren;
3135 PFNDPACOMPARE pfnCompare;
3136 LPARAM lpCompare;
3137
3138 /* undocumented feature: TVI_ROOT or NULL means `sort the whole tree' */
3139 if (parent == TVI_ROOT || parent == NULL)
3140 parent = infoPtr->root;
3141
3142 /* Check for a valid handle to the parent item */
3143 if (!TREEVIEW_ValidItem(infoPtr, parent))
3144 {
3145 ERR("invalid item hParent=%p\n", parent);
3146 return FALSE;
3147 }
3148
3149 if (pSort)
3150 {
3151 pfnCompare = (PFNDPACOMPARE)TREEVIEW_CallBackCompare;
3152 lpCompare = (LPARAM)pSort;
3153 }
3154 else
3155 {
3156 pfnCompare = (PFNDPACOMPARE)TREEVIEW_SortOnName;
3157 lpCompare = (LPARAM)infoPtr;
3158 }
3159
3160 cChildren = TREEVIEW_CountChildren(parent);
3161
3162 /* Make sure there is something to sort */
3163 if (cChildren > 1)
3164 {
3165 /* TREEVIEW_ITEM rechaining */
3166 INT count = 0;
3167 HTREEITEM item = 0;
3168 HTREEITEM nextItem = 0;
3169 HTREEITEM prevItem = 0;
3170
3171 HDPA sortList = TREEVIEW_BuildChildDPA(parent);
3172
3173 if (sortList == NULL)
3174 return FALSE;
3175
3176 /* let DPA sort the list */
3177 DPA_Sort(sortList, pfnCompare, lpCompare);
3178
3179 /* The order of DPA entries has been changed, so fixup the
3180 * nextSibling and prevSibling pointers. */
3181
3182 item = DPA_GetPtr(sortList, count++);
3183 while ((nextItem = DPA_GetPtr(sortList, count++)) != NULL)
3184 {
3185 /* link the two current item together */
3186 item->nextSibling = nextItem;
3187 nextItem->prevSibling = item;
3188
3189 if (prevItem == NULL)
3190 {
3191 /* this is the first item, update the parent */
3192 parent->firstChild = item;
3193 item->prevSibling = NULL;
3194 }
3195 else
3196 {
3197 /* fix the back chaining */
3198 item->prevSibling = prevItem;
3199 }
3200
3201 /* get ready for the next one */
3202 prevItem = item;
3203 item = nextItem