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

   1 /* Treeview control
   2  *
   3  * Copyright 1998 Eric Kohl <ekohl@abo.rhein-zeitung.de>
   4  * Copyright 1998,1999 Alex Priem <alexp@sci.kun.nl>
   5  * Copyright 1999 Sylvain St-Germain
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  *
  21  * Note that TREEVIEW_INFO * and HTREEITEM are the same thing.
  22  *
  23  * Note2: All items always! have valid (allocated) pszText field.
  24  *      If item's text == LPSTR_TEXTCALLBACKA we allocate buffer
  25  *      of size TEXT_CALLBACK_SIZE in DoSetItem.
  26  *      We use callbackMask to keep track of fields to be updated.
  27  *
  28  * TODO:
  29  *   missing notifications: NM_SETCURSOR, TVN_GETINFOTIP, TVN_KEYDOWN,
  30  *      TVN_SETDISPINFO, TVN_SINGLEEXPAND
  31  *
  32  *   missing styles: TVS_FULLROWSELECT, TVS_INFOTIP, TVS_NOSCROLL,
  33  *      TVS_RTLREADING, TVS_TRACKSELECT
  34  *
  35  *   missing item styles: TVIS_CUT, TVIS_EXPANDPARTIAL
  36  *
  37  *   Make the insertion mark look right.
  38  *   Scroll (instead of repaint) as much as possible.
  39  */
  40
  41 #include "config.h"
  42 #include "wine/port.h"
  43
  44 #include <assert.h>
  45 #include <ctype.h>
  46 #include <string.h>
  47 #include <limits.h>
  48 #include <stdlib.h>
  49
  50 #define NONAMELESSUNION
  51 #define NONAMELESSSTRUCT
  52 #include "winbase.h"
  53 #include "wingdi.h"
  54 #include "commctrl.h"
  55 #include "comctl32.h"
  56 #include "wine/debug.h"
  57
  58 /* internal structures */
  59
  60 typedef struct _TREEITEM    /* HTREEITEM is a _TREEINFO *. */
  61 {
  62   UINT      callbackMask;
  63   UINT      state;
  64   UINT      stateMask;
  65   LPSTR     pszText;
  66   int       cchTextMax;
  67   int       iImage;
  68   int       iSelectedImage;
  69   int       cChildren;
  70   LPARAM    lParam;
  71   int       iIntegral;      /* item height multiplier (1 is normal) */
  72   int       iLevel;         /* indentation level:0=root level */
  73   HTREEITEM parent;         /* handle to parent or 0 if at root */
  74   HTREEITEM firstChild;     /* handle to first child or 0 if no child */
  75   HTREEITEM lastChild;
  76   HTREEITEM prevSibling;    /* handle to prev item in list, 0 if first */
  77   HTREEITEM nextSibling;    /* handle to next item in list, 0 if last */
  78   RECT      rect;
  79   LONG      linesOffset;
  80   LONG      stateOffset;
  81   LONG      imageOffset;
  82   LONG      textOffset;
  83   LONG      textWidth;      /* horizontal text extent for pszText */
  84   LONG      visibleOrder;   /* visible ordering, 0 is first visible item */
  85 } TREEVIEW_ITEM;
  86
  87
  88 typedef struct tagTREEVIEW_INFO
  89 {
  90   HWND          hwnd;
  91   HWND          hwndNotify;     /* Owner window to send notifications to */
  92   DWORD         dwStyle;
  93   HTREEITEM     root;
  94   UINT          uInternalStatus;
  95   INT           Timer;
  96   UINT          uNumItems;      /* number of valid TREEVIEW_ITEMs */
  97   INT           cdmode;         /* last custom draw setting */
  98   UINT          uScrollTime;    /* max. time for scrolling in milliseconds */
  99   BOOL          bRedraw;        /* if FALSE we validate but don't redraw in TREEVIEW_Paint() */
 100
 101   UINT          uItemHeight;    /* item height */
 102   BOOL          bHeightSet;
 103
 104   LONG          clientWidth;    /* width of control window */
 105   LONG          clientHeight;   /* height of control window */
 106
 107   LONG          treeWidth;      /* width of visible tree items */
 108   LONG          treeHeight;     /* height of visible tree items */
 109
 110   UINT          uIndent;        /* indentation in pixels */
 111   HTREEITEM     selectedItem;   /* handle to selected item or 0 if none */
 112   HTREEITEM     hotItem;        /* handle currently under cursor, 0 if none */
 113   HTREEITEM     focusedItem;    /* item that was under the cursor when WM_LBUTTONDOWN was received */
 114
 115   HTREEITEM     firstVisible;   /* handle to first visible item */
 116   LONG          maxVisibleOrder;
 117   HTREEITEM     dropItem;       /* handle to item selected by drag cursor */
 118   HTREEITEM     insertMarkItem; /* item after which insertion mark is placed */
 119   BOOL          insertBeforeorAfter; /* flag used by TVM_SETINSERTMARK */
 120   HIMAGELIST    dragList;       /* Bitmap of dragged item */
 121   LONG          scrollX;
 122   COLORREF      clrBk;
 123   COLORREF      clrText;
 124   COLORREF      clrLine;
 125   COLORREF      clrInsertMark;
 126   HFONT         hFont;
 127   HFONT         hBoldFont;
 128   HWND          hwndToolTip;
 129
 130   HWND          hwndEdit;
 131   WNDPROC       wpEditOrig;     /* orig window proc for subclassing edit */
 132   BOOL          bIgnoreEditKillFocus;
 133   BOOL          bLabelChanged;
 134
 135   BOOL          bNtfUnicode;    /* TRUE if should send NOTIFY with W */
 136   BOOL          bUnicode;       /* set by CCM_SETUNICODEFORMAT       */
 137   HIMAGELIST    himlNormal;
 138   int           normalImageHeight;
 139   int           normalImageWidth;
 140   HIMAGELIST    himlState;
 141   int           stateImageHeight;
 142   int           stateImageWidth;
 143   HDPA          items;
 144
 145   DWORD lastKeyPressTimestamp; /* Added */
 146   WPARAM charCode; /* Added */
 147   INT nSearchParamLength; /* Added */
 148   CHAR szSearchParam[ MAX_PATH ]; /* Added */
 149 } TREEVIEW_INFO;
 150
 151
 152 /******** Defines that TREEVIEW_ProcessLetterKeys uses ****************/
 153 #define KEY_DELAY       450
 154
 155 /* bitflags for infoPtr->uInternalStatus */
 156
 157 #define TV_HSCROLL      0x01    /* treeview too large to fit in window */
 158 #define TV_VSCROLL      0x02    /* (horizontal/vertical) */
 159 #define TV_LDRAG                0x04    /* Lbutton pushed to start drag */
 160 #define TV_LDRAGGING    0x08    /* Lbutton pushed, mouse moved. */
 161 #define TV_RDRAG                0x10    /* dito Rbutton */
 162 #define TV_RDRAGGING    0x20
 163
 164 /* bitflags for infoPtr->timer */
 165
 166 #define TV_EDIT_TIMER    2
 167 #define TV_EDIT_TIMER_SET 2
 168
 169
 170 VOID TREEVIEW_Register (VOID);
 171 VOID TREEVIEW_Unregister (VOID);
 172
 173
 174 WINE_DEFAULT_DEBUG_CHANNEL(treeview);
 175
 176
 177 #define TEXT_CALLBACK_SIZE 260
 178
 179 #define TREEVIEW_LEFT_MARGIN 8
 180
 181 #define MINIMUM_INDENT 19
 182
 183 #define CALLBACK_MASK_ALL (TVIF_TEXT|TVIF_CHILDREN|TVIF_IMAGE|TVIF_SELECTEDIMAGE)
 184
 185 #define STATEIMAGEINDEX(x) (((x) >> 12) & 0x0f)
 186 #define OVERLAYIMAGEINDEX(x) (((x) >> 8) & 0x0f)
 187 #define ISVISIBLE(x)         ((x)->visibleOrder >= 0)
 188
 189
 190 typedef VOID (*TREEVIEW_ItemEnumFunc)(TREEVIEW_INFO *, TREEVIEW_ITEM *,LPVOID);
 191
 192
 193 static VOID TREEVIEW_Invalidate(TREEVIEW_INFO *, TREEVIEW_ITEM *);
 194
 195 static LRESULT TREEVIEW_DoSelectItem(TREEVIEW_INFO *, INT, HTREEITEM, INT);
 196 static VOID TREEVIEW_SetFirstVisible(TREEVIEW_INFO *, TREEVIEW_ITEM *, BOOL);
 197 static LRESULT TREEVIEW_EnsureVisible(TREEVIEW_INFO *, HTREEITEM, BOOL);
 198 static LRESULT TREEVIEW_RButtonUp(TREEVIEW_INFO *, LPPOINT);
 199 static LRESULT TREEVIEW_EndEditLabelNow(TREEVIEW_INFO *infoPtr, BOOL bCancel);
 200 static VOID TREEVIEW_UpdateScrollBars(TREEVIEW_INFO *infoPtr);
 201 static LRESULT TREEVIEW_HScroll(TREEVIEW_INFO *, WPARAM);
 202 static INT TREEVIEW_NotifyFormat (TREEVIEW_INFO *infoPtr, HWND wParam, UINT lParam);
 203
 204
 205 /* Random Utilities *****************************************************/
 206
 207 #ifndef NDEBUG
 208 static inline void
 209 TREEVIEW_VerifyTree(TREEVIEW_INFO *infoPtr)
 210 {
 211     (void)infoPtr;
 212 }
 213 #else
 214 /* The definition is at the end of the file. */
 215 static void TREEVIEW_VerifyTree(TREEVIEW_INFO *infoPtr);
 216 #endif
 217
 218 /* Returns the treeview private data if hwnd is a treeview.
 219  * Otherwise returns an undefined value. */
 220 static TREEVIEW_INFO *
 221 TREEVIEW_GetInfoPtr(HWND hwnd)
 222 {
 223     return (TREEVIEW_INFO *)GetWindowLongA(hwnd, 0);
 224 }
 225
 226 /* Don't call this. Nothing wants an item index. */
 227 static inline int
 228 TREEVIEW_GetItemIndex(TREEVIEW_INFO *infoPtr, HTREEITEM handle)
 229 {
 230     assert(infoPtr != NULL);
 231
 232     return DPA_GetPtrIndex(infoPtr->items, handle);
 233 }
 234
 235 /***************************************************************************
 236  * This method checks that handle is an item for this tree.
 237  */
 238 static BOOL
 239 TREEVIEW_ValidItem(TREEVIEW_INFO *infoPtr, HTREEITEM handle)
 240 {
 241     if (TREEVIEW_GetItemIndex(infoPtr, handle) == -1)
 242     {
 243         TRACE("invalid item %p\n", handle);
 244         return FALSE;
 245     }
 246     else
 247         return TRUE;
 248 }
 249
 250 static HFONT
 251 TREEVIEW_CreateBoldFont(HFONT hOrigFont)
 252 {
 253     LOGFONTA font;
 254
 255     GetObjectA(hOrigFont, sizeof(font), &font);
 256     font.lfWeight = FW_BOLD;
 257     return CreateFontIndirectA(&font);
 258 }
 259
 260 static inline HFONT
 261 TREEVIEW_FontForItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
 262 {
 263     return (item->state & TVIS_BOLD) ? infoPtr->hBoldFont : infoPtr->hFont;
 264 }
 265
 266 /* for trace/debugging purposes only */
 267 static const char *
 268 TREEVIEW_ItemName(TREEVIEW_ITEM *item)
 269 {
 270     if (item == NULL) return "<null item>";
 271     if (item->pszText == LPSTR_TEXTCALLBACKA) return "<callback>";
 272     if (item->pszText == NULL) return "<null>";
 273     return item->pszText;
 274 }
 275
 276 /* An item is not a child of itself. */
 277 static BOOL
 278 TREEVIEW_IsChildOf(TREEVIEW_ITEM *parent, TREEVIEW_ITEM *child)
 279 {
 280     do
 281     {
 282         child = child->parent;
 283         if (child == parent) return TRUE;
 284     } while (child != NULL);
 285
 286     return FALSE;
 287 }
 288
 289
 290 /* Tree Traversal *******************************************************/
 291
 292 /***************************************************************************
 293  * This method returns the last expanded sibling or child child item
 294  * of a tree node
 295  */
 296 static TREEVIEW_ITEM *
 297 TREEVIEW_GetLastListItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem)
 298 {
 299     if (!wineItem)
 300        return NULL;
 301
 302     while (wineItem->lastChild)
 303     {
 304        if (wineItem->state & TVIS_EXPANDED)
 305           wineItem = wineItem->lastChild;
 306        else
 307           break;
 308     }
 309
 310     if (wineItem == infoPtr->root)
 311         return NULL;
 312
 313     return wineItem;
 314 }
 315
 316 /***************************************************************************
 317  * This method returns the previous non-hidden item in the list not
 318  * considering the tree hierarchy.
 319  */
 320 static TREEVIEW_ITEM *
 321 TREEVIEW_GetPrevListItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *tvItem)
 322 {
 323     if (tvItem->prevSibling)
 324     {
 325         /* This item has a prevSibling, get the last item in the sibling's tree. */
 326         TREEVIEW_ITEM *upItem = tvItem->prevSibling;
 327
 328         if ((upItem->state & TVIS_EXPANDED) && upItem->lastChild != NULL)
 329             return TREEVIEW_GetLastListItem(infoPtr, upItem->lastChild);
 330         else
 331             return upItem;
 332     }
 333     else
 334     {
 335         /* this item does not have a prevSibling, get the parent */
 336         return (tvItem->parent != infoPtr->root) ? tvItem->parent : NULL;
 337     }
 338 }
 339
 340
 341 /***************************************************************************
 342  * This method returns the next physical item in the treeview not
 343  * considering the tree hierarchy.
 344  */
 345 static TREEVIEW_ITEM *
 346 TREEVIEW_GetNextListItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *tvItem)
 347 {
 348     assert(tvItem != NULL);
 349
 350     /*
 351      * If this item has children and is expanded, return the first child
 352      */
 353     if ((tvItem->state & TVIS_EXPANDED) && tvItem->firstChild != NULL)
 354     {
 355         return tvItem->firstChild;
 356     }
 357
 358
 359     /*
 360      * try to get the sibling
 361      */
 362     if (tvItem->nextSibling)
 363         return tvItem->nextSibling;
 364
 365     /*
 366      * Otherwise, get the parent's sibling.
 367      */
 368     while (tvItem->parent)
 369     {
 370         tvItem = tvItem->parent;
 371
 372         if (tvItem->nextSibling)
 373             return tvItem->nextSibling;
 374     }
 375
 376     return NULL;
 377 }
 378
 379 /***************************************************************************
 380  * This method returns the nth item starting at the given item.  It returns
 381  * the last item (or first) we we run out of items.
 382  *
 383  * Will scroll backward if count is <0.
 384  *             forward if count is >0.
 385  */
 386 static TREEVIEW_ITEM *
 387 TREEVIEW_GetListItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
 388                      LONG count)
 389 {
 390     TREEVIEW_ITEM *(*next_item)(TREEVIEW_INFO *, TREEVIEW_ITEM *);
 391     TREEVIEW_ITEM *previousItem;
 392
 393     assert(wineItem != NULL);
 394
 395     if (count > 0)
 396     {
 397         next_item = TREEVIEW_GetNextListItem;
 398     }
 399     else if (count < 0)
 400     {
 401         count = -count;
 402         next_item = TREEVIEW_GetPrevListItem;
 403     }
 404     else
 405         return wineItem;
 406
 407     do
 408     {
 409         previousItem = wineItem;
 410         wineItem = next_item(infoPtr, wineItem);
 411
 412     } while (--count && wineItem != NULL);
 413
 414
 415     return wineItem ? wineItem : previousItem;
 416 }
 417
 418 /* Notifications ************************************************************/
 419
 420 static INT get_notifycode(TREEVIEW_INFO *infoPtr, INT code)
 421 {
 422     if (!infoPtr->bNtfUnicode) {
 423         switch (code) {
 424         case TVN_SELCHANGINGW:    return TVN_SELCHANGINGA;
 425         case TVN_SELCHANGEDW:     return TVN_SELCHANGEDA;
 426         case TVN_GETDISPINFOW:    return TVN_GETDISPINFOA;
 427         case TVN_SETDISPINFOW:    return TVN_SETDISPINFOA;
 428         case TVN_ITEMEXPANDINGW:  return TVN_ITEMEXPANDINGA;
 429         case TVN_ITEMEXPANDEDW:   return TVN_ITEMEXPANDEDA;
 430         case TVN_BEGINDRAGW:      return TVN_BEGINDRAGA;
 431         case TVN_BEGINRDRAGW:     return TVN_BEGINRDRAGA;
 432         case TVN_DELETEITEMW:     return TVN_DELETEITEMA;
 433         case TVN_BEGINLABELEDITW: return TVN_BEGINLABELEDITA;
 434         case TVN_ENDLABELEDITW:   return TVN_ENDLABELEDITA;
 435         case TVN_GETINFOTIPW:     return TVN_GETINFOTIPA;
 436         }
 437     }
 438     return code;
 439 }
 440
 441 static LRESULT
 442 TREEVIEW_SendRealNotify(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
 443 {
 444     TRACE("wParam=%d, lParam=%ld\n", wParam, lParam);
 445     return SendMessageW(infoPtr->hwndNotify, WM_NOTIFY, wParam, lParam);
 446 }
 447
 448 static BOOL
 449 TREEVIEW_SendSimpleNotify(TREEVIEW_INFO *infoPtr, UINT code)
 450 {
 451     NMHDR nmhdr;
 452     HWND hwnd = infoPtr->hwnd;
 453
 454     TRACE("%d\n", code);
 455     nmhdr.hwndFrom = hwnd;
 456     nmhdr.idFrom = GetWindowLongA(hwnd, GWL_ID);
 457     nmhdr.code = get_notifycode(infoPtr, code);
 458
 459     return (BOOL)TREEVIEW_SendRealNotify(infoPtr,
 460                                   (WPARAM)nmhdr.idFrom, (LPARAM)&nmhdr);
 461 }
 462
 463 static VOID
 464 TREEVIEW_TVItemFromItem(TREEVIEW_INFO *infoPtr, UINT mask, TVITEMA *tvItem, TREEVIEW_ITEM *item)
 465 {
 466     tvItem->mask = mask;
 467     tvItem->hItem = item;
 468     tvItem->state = item->state;
 469     tvItem->stateMask = 0;
 470     tvItem->iImage = item->iImage;
 471     tvItem->cchTextMax = item->cchTextMax;
 472     tvItem->iImage = item->iImage;
 473     tvItem->iSelectedImage = item->iSelectedImage;
 474     tvItem->cChildren = item->cChildren;
 475     tvItem->lParam = item->lParam;
 476
 477     /* **** **** **** **** WARNING **** **** **** **** */
 478     /* This control stores all the data in A format    */
 479     /* we will convert it to W if the notify format    */
 480     /* is Unicode.                                     */
 481     /* **** **** **** **** WARNING **** **** **** **** */
 482     if (infoPtr->bNtfUnicode) {
 483         INT len = MultiByteToWideChar( CP_ACP, 0, item->pszText, -1, NULL, 0 );
 484         if (len > 1) {
 485             tvItem->pszText = (LPSTR)COMCTL32_Alloc (len*sizeof(WCHAR));
 486             MultiByteToWideChar( CP_ACP, 0, item->pszText, -1, (LPWSTR)tvItem->pszText, len*sizeof(WCHAR) );
 487         }
 488     }
 489     else
 490         tvItem->pszText = item->pszText;
 491 }
 492
 493 static BOOL
 494 TREEVIEW_SendTreeviewNotify(TREEVIEW_INFO *infoPtr, UINT code, UINT action,
 495                             UINT mask, HTREEITEM oldItem, HTREEITEM newItem)
 496 {
 497     HWND hwnd = infoPtr->hwnd;
 498     NMTREEVIEWA nmhdr;
 499     BOOL ret;
 500
 501     TRACE("code:%d action:%x olditem:%p newitem:%p\n",
 502           code, action, oldItem, newItem);
 503
 504     ZeroMemory(&nmhdr, sizeof(NMTREEVIEWA));
 505
 506     nmhdr.hdr.hwndFrom = hwnd;
 507     nmhdr.hdr.idFrom = GetWindowLongA(hwnd, GWL_ID);
 508     nmhdr.hdr.code = get_notifycode(infoPtr, code);
 509     nmhdr.action = action;
 510
 511     if (oldItem)
 512         TREEVIEW_TVItemFromItem(infoPtr, mask, &nmhdr.itemOld, oldItem);
 513
 514     if (newItem)
 515         TREEVIEW_TVItemFromItem(infoPtr, mask, &nmhdr.itemNew, newItem);
 516
 517     nmhdr.ptDrag.x = 0;
 518     nmhdr.ptDrag.y = 0;
 519
 520     ret = (BOOL)TREEVIEW_SendRealNotify(infoPtr,
 521                               (WPARAM)GetWindowLongA(hwnd, GWL_ID),
 522                               (LPARAM)&nmhdr);
 523     if (infoPtr->bNtfUnicode) {
 524         COMCTL32_Free(nmhdr.itemOld.pszText);
 525         COMCTL32_Free(nmhdr.itemNew.pszText);
 526     }
 527     return ret;
 528 }
 529
 530 static BOOL
 531 TREEVIEW_SendTreeviewDnDNotify(TREEVIEW_INFO *infoPtr, UINT code,
 532                                HTREEITEM dragItem, POINT pt)
 533 {
 534     HWND hwnd = infoPtr->hwnd;
 535     NMTREEVIEWA nmhdr;
 536
 537     TRACE("code:%d dragitem:%p\n", code, dragItem);
 538
 539     nmhdr.hdr.hwndFrom = hwnd;
 540     nmhdr.hdr.idFrom = GetWindowLongA(hwnd, GWL_ID);
 541     nmhdr.hdr.code = get_notifycode(infoPtr, code);
 542     nmhdr.action = 0;
 543     nmhdr.itemNew.mask = TVIF_STATE | TVIF_PARAM | TVIF_HANDLE;
 544     nmhdr.itemNew.hItem = dragItem;
 545     nmhdr.itemNew.state = dragItem->state;
 546     nmhdr.itemNew.lParam = dragItem->lParam;
 547
 548     nmhdr.ptDrag.x = pt.x;
 549     nmhdr.ptDrag.y = pt.y;
 550
 551     return (BOOL)TREEVIEW_SendRealNotify(infoPtr,
 552                               (WPARAM)GetWindowLongA(hwnd, GWL_ID),
 553                               (LPARAM)&nmhdr);
 554 }
 555
 556
 557 static BOOL
 558 TREEVIEW_SendCustomDrawNotify(TREEVIEW_INFO *infoPtr, DWORD dwDrawStage,
 559                               HDC hdc, RECT rc)
 560 {
 561     HWND hwnd = infoPtr->hwnd;
 562     NMTVCUSTOMDRAW nmcdhdr;
 563     LPNMCUSTOMDRAW nmcd;
 564
 565     TRACE("drawstage:%lx hdc:%p\n", dwDrawStage, hdc);
 566
 567     nmcd = &nmcdhdr.nmcd;
 568     nmcd->hdr.hwndFrom = hwnd;
 569     nmcd->hdr.idFrom = GetWindowLongA(hwnd, GWL_ID);
 570     nmcd->hdr.code = NM_CUSTOMDRAW;
 571     nmcd->dwDrawStage = dwDrawStage;
 572     nmcd->hdc = hdc;
 573     nmcd->rc = rc;
 574     nmcd->dwItemSpec = 0;
 575     nmcd->uItemState = 0;
 576     nmcd->lItemlParam = 0;
 577     nmcdhdr.clrText = infoPtr->clrText;
 578     nmcdhdr.clrTextBk = infoPtr->clrBk;
 579     nmcdhdr.iLevel = 0;
 580
 581     return (BOOL)TREEVIEW_SendRealNotify(infoPtr,
 582                               (WPARAM)GetWindowLongA(hwnd, GWL_ID),
 583                               (LPARAM)&nmcdhdr);
 584 }
 585
 586
 587
 588 /* FIXME: need to find out when the flags in uItemState need to be set */
 589
 590 static BOOL
 591 TREEVIEW_SendCustomDrawItemNotify(TREEVIEW_INFO *infoPtr, HDC hdc,
 592                                   TREEVIEW_ITEM *wineItem, UINT uItemDrawState)
 593 {
 594     HWND hwnd = infoPtr->hwnd;
 595     NMTVCUSTOMDRAW nmcdhdr;
 596     LPNMCUSTOMDRAW nmcd;
 597     DWORD dwDrawStage, dwItemSpec;
 598     UINT uItemState;
 599     INT retval;
 600
 601     dwDrawStage = CDDS_ITEM | uItemDrawState;
 602     dwItemSpec = (DWORD)wineItem;
 603     uItemState = 0;
 604     if (wineItem->state & TVIS_SELECTED)
 605         uItemState |= CDIS_SELECTED;
 606     if (wineItem == infoPtr->selectedItem)
 607         uItemState |= CDIS_FOCUS;
 608     if (wineItem == infoPtr->hotItem)
 609         uItemState |= CDIS_HOT;
 610
 611     nmcd = &nmcdhdr.nmcd;
 612     nmcd->hdr.hwndFrom = hwnd;
 613     nmcd->hdr.idFrom = GetWindowLongA(hwnd, GWL_ID);
 614     nmcd->hdr.code = NM_CUSTOMDRAW;
 615     nmcd->dwDrawStage = dwDrawStage;
 616     nmcd->hdc = hdc;
 617     nmcd->rc = wineItem->rect;
 618     nmcd->dwItemSpec = dwItemSpec;
 619     nmcd->uItemState = uItemState;
 620     nmcd->lItemlParam = wineItem->lParam;
 621     nmcdhdr.clrText = infoPtr->clrText;
 622     nmcdhdr.clrTextBk = infoPtr->clrBk;
 623     nmcdhdr.iLevel = wineItem->iLevel;
 624
 625     TRACE("drawstage:%lx hdc:%p item:%lx, itemstate:%x, lItemlParam:%lx\n",
 626           nmcd->dwDrawStage, nmcd->hdc, nmcd->dwItemSpec,
 627           nmcd->uItemState, nmcd->lItemlParam);
 628
 629     retval = TREEVIEW_SendRealNotify(infoPtr,
 630                           (WPARAM)GetWindowLongA(hwnd, GWL_ID),
 631                           (LPARAM)&nmcdhdr);
 632
 633     infoPtr->clrText = nmcdhdr.clrText;
 634     infoPtr->clrBk = nmcdhdr.clrTextBk;
 635     return (BOOL)retval;
 636 }
 637
 638 static BOOL
 639 TREEVIEW_BeginLabelEditNotify(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *editItem)
 640 {
 641     HWND hwnd = infoPtr->hwnd;
 642     LPSTR allocated = NULL;
 643     NMTVDISPINFOA tvdi;
 644     BOOL ret;
 645
 646     tvdi.hdr.hwndFrom = hwnd;
 647     tvdi.hdr.idFrom = GetWindowLongA(hwnd, GWL_ID);
 648     tvdi.hdr.code = get_notifycode(infoPtr, TVN_BEGINLABELEDITW);
 649
 650     tvdi.item.mask = TVIF_HANDLE | TVIF_STATE | TVIF_PARAM | TVIF_TEXT;
 651     tvdi.item.hItem = editItem;
 652     tvdi.item.state = editItem->state;
 653     tvdi.item.lParam = editItem->lParam;
 654     if (infoPtr->bNtfUnicode) {
 655         INT len = MultiByteToWideChar( CP_ACP, 0, editItem->pszText, -1, NULL, 0 );
 656         if (len > 1) {
 657             tvdi.item.pszText = allocated = (LPSTR)COMCTL32_Alloc (len*sizeof(WCHAR));
 658             MultiByteToWideChar( CP_ACP, 0, editItem->pszText, -1, (LPWSTR)tvdi.item.pszText, len*sizeof(WCHAR) );
 659             tvdi.item.cchTextMax = len*sizeof(WCHAR);
 660         }
 661         else {
 662             tvdi.item.pszText = editItem->pszText;  /* ??? */
 663             tvdi.item.cchTextMax = editItem->cchTextMax;  /* ??? */
 664         }
 665     }
 666     else {
 667         tvdi.item.pszText = editItem->pszText;
 668         tvdi.item.cchTextMax = editItem->cchTextMax;
 669     }
 670
 671     ret = (BOOL)TREEVIEW_SendRealNotify(infoPtr,
 672                                          tvdi.hdr.idFrom,
 673                                         (LPARAM)&tvdi);
 674     if (allocated)
 675         COMCTL32_Free(allocated);
 676     return ret;
 677 }
 678
 679 static void
 680 TREEVIEW_UpdateDispInfo(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
 681                         UINT mask)
 682 {
 683     NMTVDISPINFOA callback;
 684     HWND hwnd = infoPtr->hwnd;
 685
 686     mask &= wineItem->callbackMask;
 687
 688     if (mask == 0) return;
 689
 690     callback.hdr.hwndFrom         = hwnd;
 691     callback.hdr.idFrom           = GetWindowLongA(hwnd, GWL_ID);
 692     callback.hdr.code             = get_notifycode(infoPtr, TVN_GETDISPINFOW);
 693
 694     /* 'state' always contains valid value, as well as 'lParam'.
 695      * All other parameters are uninitialized.
 696      */
 697     callback.item.pszText         = wineItem->pszText;
 698     callback.item.cchTextMax      = wineItem->cchTextMax;
 699     callback.item.mask            = mask;
 700     callback.item.hItem           = wineItem;
 701     callback.item.state           = wineItem->state;
 702     callback.item.lParam          = wineItem->lParam;
 703
 704     /* If text is changed we need to recalculate textWidth */
 705     if (mask & TVIF_TEXT)
 706        wineItem->textWidth = 0;
 707
 708     TREEVIEW_SendRealNotify(infoPtr,
 709                             (WPARAM)callback.hdr.idFrom, (LPARAM)&callback);
 710
 711     /* It may have changed due to a call to SetItem. */
 712     mask &= wineItem->callbackMask;
 713
 714     if ((mask & TVIF_TEXT) && callback.item.pszText != wineItem->pszText)
 715     {
 716         /* Instead of copying text into our buffer user specified its own */
 717         if (infoPtr->bNtfUnicode) {
 718             LPWSTR newText;
 719             int buflen;
 720             int len = WideCharToMultiByte( CP_ACP, 0,
 721                                            (LPWSTR)callback.item.pszText, -1,
 722                                            NULL, 0, NULL, NULL );
 723             buflen = max((len+1)*sizeof(WCHAR), TEXT_CALLBACK_SIZE);
 724             newText = (LPWSTR)COMCTL32_ReAlloc(wineItem->pszText, buflen);
 725
 726             TRACE("returned wstr %s, len=%d, buflen=%d\n",
 727                   debugstr_w((LPWSTR)callback.item.pszText), len, buflen);
 728
 729             if (newText)
 730             {
 731                 wineItem->pszText = (LPSTR)newText;
 732                 WideCharToMultiByte( CP_ACP, 0,
 733                                      (LPWSTR)callback.item.pszText, -1,
 734                                      wineItem->pszText, buflen,
 735                                      NULL, NULL );
 736                 wineItem->cchTextMax = buflen;
 737             }
 738             /* If ReAlloc fails we have nothing to do, but keep original text */
 739         }
 740         else {
 741             int len = max(lstrlenA(callback.item.pszText) + 1,
 742                           TEXT_CALLBACK_SIZE);
 743             LPSTR newText = COMCTL32_ReAlloc(wineItem->pszText, len);
 744
 745             TRACE("returned str %s, len=%d\n",
 746                   debugstr_a(callback.item.pszText), len);
 747
 748             if (newText)
 749             {
 750                 wineItem->pszText = newText;
 751                 strcpy(wineItem->pszText, callback.item.pszText);
 752                 wineItem->cchTextMax = len;
 753             }
 754             /* If ReAlloc fails we have nothing to do, but keep original text */
 755         }
 756     }
 757     else if (mask & TVIF_TEXT) {
 758         /* User put text into our buffer, that is ok unless W string */
 759         if (infoPtr->bNtfUnicode) {
 760             LPWSTR newText;
 761             LPSTR oldText = NULL;
 762             int buflen;
 763             int len = WideCharToMultiByte( CP_ACP, 0,
 764                                            (LPWSTR)callback.item.pszText, -1,
 765                                            NULL, 0, NULL, NULL );
 766             buflen = max((len+1)*sizeof(WCHAR), TEXT_CALLBACK_SIZE);
 767             newText = (LPWSTR)COMCTL32_Alloc(buflen);
 768
 769             TRACE("same buffer wstr %s, len=%d, buflen=%d\n",
 770                   debugstr_w((LPWSTR)callback.item.pszText), len, buflen);
 771
 772             if (newText)
 773             {
 774                 oldText = wineItem->pszText;
 775                 wineItem->pszText = (LPSTR)newText;
 776                 WideCharToMultiByte( CP_ACP, 0,
 777                                      (LPWSTR)callback.item.pszText, -1,
 778                                      wineItem->pszText, buflen, NULL, NULL );
 779                 wineItem->cchTextMax = buflen;
 780                 if (oldText)
 781                     COMCTL32_Free(oldText);
 782             }
 783         }
 784     }
 785
 786     if (mask & TVIF_IMAGE)
 787         wineItem->iImage = callback.item.iImage;
 788
 789     if (mask & TVIF_SELECTEDIMAGE)
 790         wineItem->iSelectedImage = callback.item.iSelectedImage;
 791
 792     if (mask & TVIF_CHILDREN)
 793         wineItem->cChildren = callback.item.cChildren;
 794
 795     /* These members are now permanently set. */
 796     if (callback.item.mask & TVIF_DI_SETITEM)
 797         wineItem->callbackMask &= ~callback.item.mask;
 798 }
 799
 800 /***************************************************************************
 801  * This function uses cChildren field to decide whether the item has
 802  * children or not.
 803  * Note: if this returns TRUE, the child items may not actually exist,
 804  * they could be virtual.
 805  *
 806  * Just use wineItem->firstChild to check for physical children.
 807  */
 808 static BOOL
 809 TREEVIEW_HasChildren(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem)
 810 {
 811     TREEVIEW_UpdateDispInfo(infoPtr, wineItem, TVIF_CHILDREN);
 812
 813     return wineItem->cChildren > 0;
 814 }
 815
 816
 817 /* Item Position ********************************************************/
 818
 819 /* Compute linesOffset, stateOffset, imageOffset, textOffset of an item. */
 820 static VOID
 821 TREEVIEW_ComputeItemInternalMetrics(TREEVIEW_INFO *infoPtr,
 822                                     TREEVIEW_ITEM *item)
 823 {
 824     /* Same effect, different optimisation. */
 825 #if 0
 826     BOOL lar = ((infoPtr->dwStyle & TVS_LINESATROOT)
 827                 && (infoPtr->dwStyle & (TVS_HASLINES|TVS_HASBUTTONS)));
 828 #else
 829     BOOL lar = ((infoPtr->dwStyle
 830                  & (TVS_LINESATROOT|TVS_HASLINES|TVS_HASBUTTONS))
 831                 > TVS_LINESATROOT);
 832 #endif
 833
 834     item->linesOffset = infoPtr->uIndent * (item->iLevel + lar - 1)
 835         - infoPtr->scrollX;
 836     item->stateOffset = item->linesOffset + infoPtr->uIndent;
 837     item->imageOffset = item->stateOffset
 838         + (STATEIMAGEINDEX(item->state) ? infoPtr->stateImageWidth : 0);
 839     item->textOffset  = item->imageOffset + infoPtr->normalImageWidth;
 840 }
 841
 842 static VOID
 843 TREEVIEW_ComputeTextWidth(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item, HDC hDC)
 844 {
 845     HDC hdc;
 846     HFONT hOldFont=0;
 847     SIZE sz;
 848
 849     /* DRAW's OM docker creates items like this */
 850     if (item->pszText == NULL)
 851     {
 852         item->textWidth = 0;
 853         return;
 854     }
 855
 856     if (item->textWidth != 0 && !(item->callbackMask & TVIF_TEXT))
 857        return;
 858
 859     if (hDC != 0)
 860     {
 861         hdc = hDC;
 862     }
 863     else
 864     {
 865         hdc = GetDC(infoPtr->hwnd);
 866         hOldFont = SelectObject(hdc, TREEVIEW_FontForItem(infoPtr, item));
 867     }
 868
 869     GetTextExtentPoint32A(hdc, item->pszText, strlen(item->pszText), &sz);
 870     item->textWidth = sz.cx;
 871
 872     if (hDC == 0)
 873     {
 874         SelectObject(hdc, hOldFont);
 875         ReleaseDC(0, hdc);
 876     }
 877 }
 878
 879 static VOID
 880 TREEVIEW_ComputeItemRect(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
 881 {
 882     item->rect.top = infoPtr->uItemHeight *
 883         (item->visibleOrder - infoPtr->firstVisible->visibleOrder);
 884
 885     item->rect.bottom = item->rect.top
 886         + infoPtr->uItemHeight * item->iIntegral - 1;
 887
 888     item->rect.left = 0;
 889     item->rect.right = infoPtr->clientWidth;
 890 }
 891
 892 /* We know that only items after start need their order updated. */
 893 static void
 894 TREEVIEW_RecalculateVisibleOrder(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *start)
 895 {
 896     TREEVIEW_ITEM *item;
 897     int order;
 898
 899     if (!start)
 900     {
 901         start = infoPtr->root->firstChild;
 902         order = 0;
 903     }
 904     else
 905         order = start->visibleOrder;
 906
 907     for (item = start; item != NULL;
 908          item = TREEVIEW_GetNextListItem(infoPtr, item))
 909     {
 910         item->visibleOrder = order;
 911         order += item->iIntegral;
 912     }
 913
 914     infoPtr->maxVisibleOrder = order;
 915
 916     for (item = start; item != NULL;
 917          item = TREEVIEW_GetNextListItem(infoPtr, item))
 918     {
 919         TREEVIEW_ComputeItemRect(infoPtr, item);
 920     }
 921 }
 922
 923
 924 /* Update metrics of all items in selected subtree.
 925  * root must be expanded
 926  */
 927 static VOID
 928 TREEVIEW_UpdateSubTree(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *root)
 929 {
 930    TREEVIEW_ITEM *sibling;
 931    HDC hdc;
 932    HFONT hOldFont;
 933
 934    if (!root->firstChild || !(root->state & TVIS_EXPANDED))
 935       return;
 936
 937    root->state &= ~TVIS_EXPANDED;
 938    sibling = TREEVIEW_GetNextListItem(infoPtr, root);
 939    root->state |= TVIS_EXPANDED;
 940
 941    hdc = GetDC(infoPtr->hwnd);
 942    hOldFont = SelectObject(hdc, infoPtr->hFont);
 943
 944    for (; root != sibling;
 945         root = TREEVIEW_GetNextListItem(infoPtr, root))
 946    {
 947       TREEVIEW_ComputeItemInternalMetrics(infoPtr, root);
 948
 949       if (root->callbackMask & TVIF_TEXT)
 950          TREEVIEW_UpdateDispInfo(infoPtr, root, TVIF_TEXT);
 951
 952       if (root->textWidth == 0)
 953       {
 954          SelectObject(hdc, TREEVIEW_FontForItem(infoPtr, root));
 955          TREEVIEW_ComputeTextWidth(infoPtr, root, hdc);
 956       }
 957    }
 958
 959    SelectObject(hdc, hOldFont);
 960    ReleaseDC(infoPtr->hwnd, hdc);
 961 }
 962
 963 /* Item Allocation **********************************************************/
 964
 965 static TREEVIEW_ITEM *
 966 TREEVIEW_AllocateItem(TREEVIEW_INFO *infoPtr)
 967 {
 968     TREEVIEW_ITEM *newItem = COMCTL32_Alloc(sizeof(TREEVIEW_ITEM));
 969
 970     if (!newItem)
 971         return NULL;
 972
 973     if (DPA_InsertPtr(infoPtr->items, INT_MAX, newItem) == -1)
 974     {
 975         COMCTL32_Free(newItem);
 976         return NULL;
 977     }
 978
 979     return newItem;
 980 }
 981
 982 /* Exact opposite of TREEVIEW_AllocateItem. In particular, it does not
 983  * free item->pszText. */
 984 static void
 985 TREEVIEW_FreeItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
 986 {
 987     DPA_DeletePtr(infoPtr->items, DPA_GetPtrIndex(infoPtr->items, item));
 988     COMCTL32_Free(item);
 989     if (infoPtr->selectedItem == item)
 990         infoPtr->selectedItem = NULL;
 991 }
 992
 993
 994 /* Item Insertion *******************************************************/
 995
 996 /***************************************************************************
 997  * This method inserts newItem before sibling as a child of parent.
 998  * sibling can be NULL, but only if parent has no children.
 999  */
1000 static void
1001 TREEVIEW_InsertBefore(TREEVIEW_ITEM *newItem, TREEVIEW_ITEM *sibling,
1002                       TREEVIEW_ITEM *parent)
1003 {
1004     assert(newItem != NULL);
1005     assert(parent != NULL);
1006
1007     if (sibling != NULL)
1008     {
1009         assert(sibling->parent == parent);
1010
1011         if (sibling->prevSibling != NULL)
1012             sibling->prevSibling->nextSibling = newItem;
1013
1014         newItem->prevSibling = sibling->prevSibling;
1015         sibling->prevSibling = newItem;
1016     }
1017     else
1018        newItem->prevSibling = NULL;
1019
1020     newItem->nextSibling = sibling;
1021
1022     if (parent->firstChild == sibling)
1023         parent->firstChild = newItem;
1024
1025     if (parent->lastChild == NULL)
1026         parent->lastChild = newItem;
1027 }
1028
1029 /***************************************************************************
1030  * This method inserts newItem after sibling as a child of parent.
1031  * sibling can be NULL, but only if parent has no children.
1032  */
1033 static void
1034 TREEVIEW_InsertAfter(TREEVIEW_ITEM *newItem, TREEVIEW_ITEM *sibling,
1035                      TREEVIEW_ITEM *parent)
1036 {
1037     assert(newItem != NULL);
1038     assert(parent != NULL);
1039
1040     if (sibling != NULL)
1041     {
1042         assert(sibling->parent == parent);
1043
1044         if (sibling->nextSibling != NULL)
1045             sibling->nextSibling->prevSibling = newItem;
1046
1047         newItem->nextSibling = sibling->nextSibling;
1048         sibling->nextSibling = newItem;
1049     }
1050     else
1051        newItem->nextSibling = NULL;
1052
1053     newItem->prevSibling = sibling;
1054
1055     if (parent->lastChild == sibling)
1056         parent->lastChild = newItem;
1057
1058     if (parent->firstChild == NULL)
1059         parent->firstChild = newItem;
1060 }
1061
1062 static BOOL
1063 TREEVIEW_DoSetItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
1064                    const TVITEMEXA *tvItem)
1065 {
1066     UINT callbackClear = 0;
1067     UINT callbackSet = 0;
1068
1069     /* Do this first in case it fails. */
1070     if (tvItem->mask & TVIF_TEXT)
1071     {
1072         wineItem->textWidth = 0; /* force width recalculation */
1073         if (tvItem->pszText != LPSTR_TEXTCALLBACKA)
1074         {
1075             int len = lstrlenA(tvItem->pszText) + 1;
1076             LPSTR newText = COMCTL32_ReAlloc(wineItem->pszText, len);
1077
1078             if (newText == NULL) return FALSE;
1079
1080             callbackClear |= TVIF_TEXT;
1081
1082             wineItem->pszText = newText;
1083             wineItem->cchTextMax = len;
1084             lstrcpynA(wineItem->pszText, tvItem->pszText, len);
1085             TRACE("setting text %s, item %p\n",
1086                   debugstr_a(wineItem->pszText), wineItem);
1087         }
1088         else
1089         {
1090             callbackSet |= TVIF_TEXT;
1091
1092             wineItem->pszText = COMCTL32_ReAlloc(wineItem->pszText,
1093                                                  TEXT_CALLBACK_SIZE);
1094             wineItem->cchTextMax = TEXT_CALLBACK_SIZE;
1095             TRACE("setting callback, item %p\n",
1096                   wineItem);
1097         }
1098     }
1099
1100     if (tvItem->mask & TVIF_CHILDREN)
1101     {
1102         wineItem->cChildren = tvItem->cChildren;
1103
1104         if (wineItem->cChildren == I_CHILDRENCALLBACK)
1105             callbackSet |= TVIF_CHILDREN;
1106         else
1107             callbackClear |= TVIF_CHILDREN;
1108     }
1109
1110     if (tvItem->mask & TVIF_IMAGE)
1111     {
1112         wineItem->iImage = tvItem->iImage;
1113
1114         if (wineItem->iImage == I_IMAGECALLBACK)
1115             callbackSet |= TVIF_IMAGE;
1116         else
1117             callbackClear |= TVIF_IMAGE;
1118     }
1119
1120     if (tvItem->mask & TVIF_SELECTEDIMAGE)
1121     {
1122         wineItem->iSelectedImage = tvItem->iSelectedImage;
1123
1124         if (wineItem->iSelectedImage == I_IMAGECALLBACK)
1125             callbackSet |= TVIF_SELECTEDIMAGE;
1126         else
1127             callbackClear |= TVIF_SELECTEDIMAGE;
1128     }
1129
1130     if (tvItem->mask & TVIF_PARAM)
1131         wineItem->lParam = tvItem->lParam;
1132
1133     /* If the application sets TVIF_INTEGRAL without
1134      * supplying a TVITEMEX structure, it's toast. */
1135     if (tvItem->mask & TVIF_INTEGRAL)
1136         wineItem->iIntegral = tvItem->iIntegral;
1137
1138     if (tvItem->mask & TVIF_STATE)
1139     {
1140         TRACE("prevstate,state,mask:%x,%x,%x\n", wineItem->state, tvItem->state,
1141               tvItem->stateMask);
1142         wineItem->state &= ~tvItem->stateMask;
1143         wineItem->state |= (tvItem->state & tvItem->stateMask);
1144     }
1145
1146     wineItem->callbackMask |= callbackSet;
1147     wineItem->callbackMask &= ~callbackClear;
1148
1149     return TRUE;
1150 }
1151
1152 /* Note that the new item is pre-zeroed. */
1153 static LRESULT
1154 TREEVIEW_InsertItemA(TREEVIEW_INFO *infoPtr, LPARAM lParam)
1155 {
1156     const TVINSERTSTRUCTA *ptdi = (LPTVINSERTSTRUCTA) lParam;
1157     const TVITEMEXA *tvItem = &ptdi->DUMMYUNIONNAME.itemex;
1158     HTREEITEM insertAfter;
1159     TREEVIEW_ITEM *newItem, *parentItem;
1160     BOOL bTextUpdated = FALSE;
1161
1162     if (ptdi->hParent == TVI_ROOT || ptdi->hParent == 0)
1163     {
1164         parentItem = infoPtr->root;
1165     }
1166     else
1167     {
1168         parentItem = ptdi->hParent;
1169
1170         if (!TREEVIEW_ValidItem(infoPtr, parentItem))
1171         {
1172             WARN("invalid parent %p\n", parentItem);
1173             return (LRESULT)(HTREEITEM)NULL;
1174         }
1175     }
1176
1177     insertAfter = ptdi->hInsertAfter;
1178
1179     /* Validate this now for convenience. */
1180     switch ((DWORD)insertAfter)
1181     {
1182     case (DWORD)TVI_FIRST:
1183     case (DWORD)TVI_LAST:
1184     case (DWORD)TVI_SORT:
1185         break;
1186
1187     default:
1188         if (!TREEVIEW_ValidItem(infoPtr, insertAfter) ||
1189             insertAfter->parent != parentItem)
1190         {
1191             WARN("invalid insert after %p\n", insertAfter);
1192             insertAfter = TVI_LAST;
1193         }
1194     }
1195
1196     TRACE("parent %p position %p: '%s'\n", parentItem, insertAfter,
1197           (tvItem->mask & TVIF_TEXT)
1198           ? ((tvItem->pszText == LPSTR_TEXTCALLBACKA) ? "<callback>"
1199              : tvItem->pszText)
1200           : "<no label>");
1201
1202     newItem = TREEVIEW_AllocateItem(infoPtr);
1203     if (newItem == NULL)
1204         return (LRESULT)(HTREEITEM)NULL;
1205
1206     newItem->parent = parentItem;
1207     newItem->iIntegral = 1;
1208
1209     if (!TREEVIEW_DoSetItem(infoPtr, newItem, tvItem))
1210         return (LRESULT)(HTREEITEM)NULL;
1211
1212     /* After this point, nothing can fail. (Except for TVI_SORT.) */
1213
1214     infoPtr->uNumItems++;
1215
1216     switch ((DWORD)insertAfter)
1217     {
1218     case (DWORD)TVI_FIRST:
1219         TREEVIEW_InsertBefore(newItem, parentItem->firstChild, parentItem);
1220         if (infoPtr->firstVisible == parentItem->firstChild)
1221             TREEVIEW_SetFirstVisible(infoPtr, newItem, TRUE);
1222         break;
1223
1224     case (DWORD)TVI_LAST:
1225         TREEVIEW_InsertAfter(newItem, parentItem->lastChild, parentItem);
1226         break;
1227
1228         /* hInsertAfter names a specific item we want to insert after */
1229     default:
1230         TREEVIEW_InsertAfter(newItem, insertAfter, insertAfter->parent);
1231         break;
1232
1233     case (DWORD)TVI_SORT:
1234         {
1235             TREEVIEW_ITEM *aChild;
1236             TREEVIEW_ITEM *previousChild = NULL;
1237             BOOL bItemInserted = FALSE;
1238
1239             aChild = parentItem->firstChild;
1240
1241             bTextUpdated = TRUE;
1242             TREEVIEW_UpdateDispInfo(infoPtr, newItem, TVIF_TEXT);
1243
1244             /* Iterate the parent children to see where we fit in */
1245             while (aChild != NULL)
1246             {
1247                 INT comp;
1248
1249                 TREEVIEW_UpdateDispInfo(infoPtr, aChild, TVIF_TEXT);
1250                 comp = lstrcmpA(newItem->pszText, aChild->pszText);
1251
1252                 if (comp < 0)   /* we are smaller than the current one */
1253                 {
1254                     TREEVIEW_InsertBefore(newItem, aChild, parentItem);
1255                     bItemInserted = TRUE;
1256                     break;
1257                 }
1258                 else if (comp > 0)      /* we are bigger than the current one */
1259                 {
1260                     previousChild = aChild;
1261
1262                     /* This will help us to exit if there is no more sibling */
1263                     aChild = (aChild->nextSibling == 0)
1264                         ? NULL
1265                         : aChild->nextSibling;
1266
1267                     /* Look at the next item */
1268                     continue;
1269                 }
1270                 else if (comp == 0)
1271                 {
1272                     /*
1273                      * An item with this name is already existing, therefore,
1274                      * we add after the one we found
1275                      */
1276                     TREEVIEW_InsertAfter(newItem, aChild, parentItem);
1277                     bItemInserted = TRUE;
1278                     break;
1279                 }
1280             }
1281
1282             /*
1283              * we reach the end of the child list and the item has not
1284              * yet been inserted, therefore, insert it after the last child.
1285              */
1286             if ((!bItemInserted) && (aChild == NULL))
1287                 TREEVIEW_InsertAfter(newItem, previousChild, parentItem);
1288
1289             break;
1290         }
1291     }
1292
1293
1294     TRACE("new item %p; parent %p, mask %x\n", newItem,
1295           newItem->parent, tvItem->mask);
1296
1297     newItem->iLevel = newItem->parent->iLevel + 1;
1298
1299     if (newItem->parent->cChildren == 0)
1300         newItem->parent->cChildren = 1;
1301
1302     if (infoPtr->dwStyle & TVS_CHECKBOXES)
1303     {
1304         if (STATEIMAGEINDEX(newItem->state) == 0)
1305             newItem->state |= INDEXTOSTATEIMAGEMASK(1);
1306     }
1307
1308     if (infoPtr->firstVisible == NULL)
1309         infoPtr->firstVisible = newItem;
1310
1311     TREEVIEW_VerifyTree(infoPtr);
1312
1313     if (parentItem == infoPtr->root ||
1314         (ISVISIBLE(parentItem) && parentItem->state & TVIS_EXPANDED))
1315     {
1316        TREEVIEW_ITEM *item;
1317        TREEVIEW_ITEM *prev = TREEVIEW_GetPrevListItem(infoPtr, newItem);
1318
1319        TREEVIEW_RecalculateVisibleOrder(infoPtr, prev);
1320        TREEVIEW_ComputeItemInternalMetrics(infoPtr, newItem);
1321
1322        if (!bTextUpdated)
1323           TREEVIEW_UpdateDispInfo(infoPtr, newItem, TVIF_TEXT);
1324
1325        TREEVIEW_ComputeTextWidth(infoPtr, newItem, 0);
1326        TREEVIEW_UpdateScrollBars(infoPtr);
1327     /*
1328      * if the item was inserted in a visible part of the tree,
1329      * invalidate it, as well as those after it
1330      */
1331        for (item = newItem;
1332             item != NULL;
1333             item = TREEVIEW_GetNextListItem(infoPtr, item))
1334           TREEVIEW_Invalidate(infoPtr, item);
1335     }
1336     else
1337     {
1338        newItem->visibleOrder = -1;
1339
1340        /* refresh treeview if newItem is the first item inserted under parentItem */
1341        if (ISVISIBLE(parentItem) && newItem->prevSibling == newItem->nextSibling)
1342        {
1343           /* parent got '+' - update it */
1344           TREEVIEW_Invalidate(infoPtr, parentItem);
1345        }
1346     }
1347
1348     return (LRESULT)newItem;
1349 }
1350
1351
1352 static LRESULT
1353 TREEVIEW_InsertItemW(TREEVIEW_INFO *infoPtr, LPARAM lParam)
1354 {
1355     TVINSERTSTRUCTW *tvisW;
1356     TVINSERTSTRUCTA tvisA;
1357     LRESULT lRes;
1358
1359     tvisW = (LPTVINSERTSTRUCTW) lParam;
1360
1361     tvisA.hParent = tvisW->hParent;
1362     tvisA.hInsertAfter = tvisW->hInsertAfter;
1363
1364     tvisA.DUMMYUNIONNAME.item.mask = tvisW->DUMMYUNIONNAME.item.mask;
1365     tvisA.DUMMYUNIONNAME.item.hItem = tvisW->DUMMYUNIONNAME.item.hItem;
1366     tvisA.DUMMYUNIONNAME.item.state = tvisW->DUMMYUNIONNAME.item.state;
1367     tvisA.DUMMYUNIONNAME.item.stateMask = tvisW->DUMMYUNIONNAME.item.stateMask;
1368     tvisA.DUMMYUNIONNAME.item.cchTextMax =
1369         tvisW->DUMMYUNIONNAME.item.cchTextMax;
1370
1371     if (tvisW->DUMMYUNIONNAME.item.pszText)
1372     {
1373         if (tvisW->DUMMYUNIONNAME.item.pszText != LPSTR_TEXTCALLBACKW)
1374         {
1375             int len = WideCharToMultiByte( CP_ACP, 0, tvisW->DUMMYUNIONNAME.item.pszText, -1,
1376                                            NULL, 0, NULL, NULL );
1377             tvisA.DUMMYUNIONNAME.item.pszText = COMCTL32_Alloc(len);
1378             WideCharToMultiByte( CP_ACP, 0, tvisW->DUMMYUNIONNAME.item.pszText, -1,
1379                                  tvisA.DUMMYUNIONNAME.item.pszText, len, NULL, NULL );
1380         }
1381         else
1382         {
1383             tvisA.DUMMYUNIONNAME.item.pszText = LPSTR_TEXTCALLBACKA;
1384             tvisA.DUMMYUNIONNAME.item.cchTextMax = 0;
1385         }
1386     }
1387
1388     tvisA.DUMMYUNIONNAME.item.iImage = tvisW->DUMMYUNIONNAME.item.iImage;
1389     tvisA.DUMMYUNIONNAME.item.iSelectedImage =
1390         tvisW->DUMMYUNIONNAME.item.iSelectedImage;
1391     tvisA.DUMMYUNIONNAME.item.cChildren = tvisW->DUMMYUNIONNAME.item.cChildren;
1392     tvisA.DUMMYUNIONNAME.item.lParam = tvisW->DUMMYUNIONNAME.item.lParam;
1393
1394     lRes = TREEVIEW_InsertItemA(infoPtr, (LPARAM)&tvisA);
1395
1396     if (tvisA.DUMMYUNIONNAME.item.pszText != LPSTR_TEXTCALLBACKA)
1397     {
1398         COMCTL32_Free(tvisA.DUMMYUNIONNAME.item.pszText);
1399     }
1400
1401     return lRes;
1402
1403 }
1404
1405
1406 /* Item Deletion ************************************************************/
1407 static void
1408 TREEVIEW_RemoveItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem);
1409
1410 static void
1411 TREEVIEW_RemoveAllChildren(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *parentItem)
1412 {
1413     TREEVIEW_ITEM *kill = parentItem->firstChild;
1414
1415     while (kill != NULL)
1416     {
1417         TREEVIEW_ITEM *next = kill->nextSibling;
1418
1419         TREEVIEW_RemoveItem(infoPtr, kill);
1420
1421         kill = next;
1422     }
1423
1424     assert(parentItem->cChildren <= 0); /* I_CHILDRENCALLBACK or 0 */
1425     assert(parentItem->firstChild == NULL);
1426     assert(parentItem->lastChild == NULL);
1427 }
1428
1429 static void
1430 TREEVIEW_UnlinkItem(TREEVIEW_ITEM *item)
1431 {
1432     TREEVIEW_ITEM *parentItem = item->parent;
1433
1434     assert(item != NULL);
1435     assert(item->parent != NULL); /* i.e. it must not be the root */
1436
1437     if (parentItem->firstChild == item)
1438         parentItem->firstChild = item->nextSibling;
1439
1440     if (parentItem->lastChild == item)
1441         parentItem->lastChild = item->prevSibling;
1442
1443     if (parentItem->firstChild == NULL && parentItem->lastChild == NULL
1444         && parentItem->cChildren > 0)
1445         parentItem->cChildren = 0;
1446
1447     if (item->prevSibling)
1448         item->prevSibling->nextSibling = item->nextSibling;
1449
1450     if (item->nextSibling)
1451         item->nextSibling->prevSibling = item->prevSibling;
1452 }
1453
1454 static void
1455 TREEVIEW_RemoveItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem)
1456 {
1457     TRACE("%p, (%s)\n", wineItem, TREEVIEW_ItemName(wineItem));
1458
1459     TREEVIEW_SendTreeviewNotify(infoPtr, TVN_DELETEITEMW, TVC_UNKNOWN,
1460                                 TVIF_HANDLE | TVIF_PARAM, wineItem, 0);
1461
1462     if (wineItem->firstChild)
1463         TREEVIEW_RemoveAllChildren(infoPtr, wineItem);
1464
1465     TREEVIEW_UnlinkItem(wineItem);
1466
1467     infoPtr->uNumItems--;
1468
1469     if (wineItem->pszText != LPSTR_TEXTCALLBACKA)
1470         COMCTL32_Free(wineItem->pszText);
1471
1472     TREEVIEW_FreeItem(infoPtr, wineItem);
1473 }
1474
1475
1476 /* Empty out the tree. */
1477 static void
1478 TREEVIEW_RemoveTree(TREEVIEW_INFO *infoPtr)
1479 {
1480     TREEVIEW_RemoveAllChildren(infoPtr, infoPtr->root);
1481
1482     assert(infoPtr->uNumItems == 0);    /* root isn't counted in uNumItems */
1483 }
1484
1485 static LRESULT
1486 TREEVIEW_DeleteItem(TREEVIEW_INFO *infoPtr, HTREEITEM wineItem)
1487 {
1488     TREEVIEW_ITEM *oldSelection = infoPtr->selectedItem;
1489     TREEVIEW_ITEM *newSelection = oldSelection;
1490     TREEVIEW_ITEM *newFirstVisible = NULL;
1491     TREEVIEW_ITEM *parent, *prev = NULL;
1492     BOOL visible = FALSE;
1493
1494     if (wineItem == TVI_ROOT)
1495     {
1496         TRACE("TVI_ROOT\n");
1497         parent = infoPtr->root;
1498         newSelection = NULL;
1499         visible = TRUE;
1500         TREEVIEW_RemoveTree(infoPtr);
1501     }
1502     else
1503     {
1504         if (!TREEVIEW_ValidItem(infoPtr, wineItem))
1505             return FALSE;
1506
1507         TRACE("%p (%s)\n", wineItem, TREEVIEW_ItemName(wineItem));
1508         parent = wineItem->parent;
1509
1510         if (ISVISIBLE(wineItem))
1511         {
1512             prev = TREEVIEW_GetPrevListItem(infoPtr, wineItem);
1513             visible = TRUE;
1514         }
1515
1516         if (infoPtr->selectedItem != NULL
1517             && (wineItem == infoPtr->selectedItem
1518                 || TREEVIEW_IsChildOf(wineItem, infoPtr->selectedItem)))
1519         {
1520             if (wineItem->nextSibling)
1521                 newSelection = wineItem->nextSibling;
1522             else if (wineItem->parent != infoPtr->root)
1523                 newSelection = wineItem->parent;
1524         }
1525
1526         if (infoPtr->firstVisible == wineItem)
1527         {
1528             if (wineItem->nextSibling)
1529                newFirstVisible = wineItem->nextSibling;
1530             else if (wineItem->prevSibling)
1531                newFirstVisible = wineItem->prevSibling;
1532             else if (wineItem->parent != infoPtr->root)
1533                newFirstVisible = wineItem->parent;
1534         }
1535         else
1536             newFirstVisible = infoPtr->firstVisible;
1537
1538         TREEVIEW_RemoveItem(infoPtr, wineItem);
1539     }
1540
1541     /* Don't change if somebody else already has. */
1542     if (oldSelection == infoPtr->selectedItem)
1543     {
1544         if (TREEVIEW_ValidItem(infoPtr, newSelection))
1545             TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, newSelection, TVC_UNKNOWN);
1546         else
1547             infoPtr->selectedItem = 0;
1548     }
1549
1550     /* Validate insertMark dropItem.
1551      * hotItem ??? - used for comparison only.
1552      */
1553     if (!TREEVIEW_ValidItem(infoPtr, infoPtr->insertMarkItem))
1554         infoPtr->insertMarkItem = 0;
1555
1556     if (!TREEVIEW_ValidItem(infoPtr, infoPtr->dropItem))
1557         infoPtr->dropItem = 0;
1558
1559     if (!TREEVIEW_ValidItem(infoPtr, newFirstVisible))
1560         newFirstVisible = infoPtr->root->firstChild;
1561
1562     TREEVIEW_VerifyTree(infoPtr);
1563
1564
1565     if (visible)
1566     {
1567        TREEVIEW_RecalculateVisibleOrder(infoPtr, prev);
1568        TREEVIEW_SetFirstVisible(infoPtr, newFirstVisible, TRUE);
1569        TREEVIEW_UpdateScrollBars(infoPtr);
1570        TREEVIEW_Invalidate(infoPtr, NULL);
1571     }
1572     else if (ISVISIBLE(parent) && !TREEVIEW_HasChildren(infoPtr, parent))
1573     {
1574        /* parent lost '+/-' - update it */
1575        TREEVIEW_Invalidate(infoPtr, parent);
1576     }
1577
1578     return TRUE;
1579 }
1580
1581
1582 /* Get/Set Messages *********************************************************/
1583 static LRESULT
1584 TREEVIEW_SetRedraw(TREEVIEW_INFO* infoPtr, WPARAM wParam, LPARAM lParam)
1585 {
1586   if(wParam)
1587     infoPtr->bRedraw = TRUE;
1588   else
1589     infoPtr->bRedraw = FALSE;
1590
1591   return 0;
1592 }
1593
1594 static LRESULT
1595 TREEVIEW_GetIndent(TREEVIEW_INFO *infoPtr)
1596 {
1597     TRACE("\n");
1598     return infoPtr->uIndent;
1599 }
1600
1601 static LRESULT
1602 TREEVIEW_SetIndent(TREEVIEW_INFO *infoPtr, UINT newIndent)
1603 {
1604     TRACE("\n");
1605
1606     if (newIndent < MINIMUM_INDENT)
1607         newIndent = MINIMUM_INDENT;
1608
1609     if (infoPtr->uIndent != newIndent)
1610     {
1611         infoPtr->uIndent = newIndent;
1612         TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
1613         TREEVIEW_UpdateScrollBars(infoPtr);
1614         TREEVIEW_Invalidate(infoPtr, NULL);
1615     }
1616
1617     return 0;
1618 }
1619
1620
1621 static LRESULT
1622 TREEVIEW_GetToolTips(TREEVIEW_INFO *infoPtr)
1623 {
1624     TRACE("\n");
1625     return (LRESULT)infoPtr->hwndToolTip;
1626 }
1627
1628 static LRESULT
1629 TREEVIEW_SetToolTips(TREEVIEW_INFO *infoPtr, HWND hwndTT)
1630 {
1631     HWND prevToolTip;
1632
1633     TRACE("\n");
1634     prevToolTip = infoPtr->hwndToolTip;
1635     infoPtr->hwndToolTip = hwndTT;
1636
1637     return (LRESULT)prevToolTip;
1638 }
1639
1640
1641 static LRESULT
1642 TREEVIEW_GetScrollTime(TREEVIEW_INFO *infoPtr)
1643 {
1644     return infoPtr->uScrollTime;
1645 }
1646
1647 static LRESULT
1648 TREEVIEW_SetScrollTime(TREEVIEW_INFO *infoPtr, UINT uScrollTime)
1649 {
1650     UINT uOldScrollTime = infoPtr->uScrollTime;
1651
1652     infoPtr->uScrollTime = min(uScrollTime, 100);
1653
1654     return uOldScrollTime;
1655 }
1656
1657
1658 static LRESULT
1659 TREEVIEW_GetImageList(TREEVIEW_INFO *infoPtr, WPARAM wParam)
1660 {
1661     TRACE("\n");
1662
1663     switch (wParam)
1664     {
1665     case (WPARAM)TVSIL_NORMAL:
1666         return (LRESULT)infoPtr->himlNormal;
1667
1668     case (WPARAM)TVSIL_STATE:
1669         return (LRESULT)infoPtr->himlState;
1670
1671     default:
1672         return 0;
1673     }
1674 }
1675
1676 static LRESULT
1677 TREEVIEW_SetImageList(TREEVIEW_INFO *infoPtr, WPARAM wParam, HIMAGELIST himlNew)
1678 {
1679     HIMAGELIST himlOld = 0;
1680     int oldWidth  = infoPtr->normalImageWidth;
1681     int oldHeight = infoPtr->normalImageHeight;
1682
1683
1684     TRACE("%x,%p\n", wParam, himlNew);
1685
1686     switch (wParam)
1687     {
1688     case (WPARAM)TVSIL_NORMAL:
1689         himlOld = infoPtr->himlNormal;
1690         infoPtr->himlNormal = himlNew;
1691
1692         if (himlNew != NULL)
1693             ImageList_GetIconSize(himlNew, &infoPtr->normalImageWidth,
1694                                   &infoPtr->normalImageHeight);
1695         else
1696         {
1697             infoPtr->normalImageWidth = 0;
1698             infoPtr->normalImageHeight = 0;
1699         }
1700
1701         break;
1702
1703     case (WPARAM)TVSIL_STATE:
1704         himlOld = infoPtr->himlState;
1705         infoPtr->himlState = himlNew;
1706
1707         if (himlNew != NULL)
1708             ImageList_GetIconSize(himlNew, &infoPtr->stateImageWidth,
1709                                   &infoPtr->stateImageHeight);
1710         else
1711         {
1712             infoPtr->stateImageWidth = 0;
1713             infoPtr->stateImageHeight = 0;
1714         }
1715
1716         break;
1717     }
1718
1719     if (oldWidth != infoPtr->normalImageWidth ||
1720         oldHeight != infoPtr->normalImageHeight)
1721     {
1722        TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
1723        TREEVIEW_UpdateScrollBars(infoPtr);
1724     }
1725
1726     TREEVIEW_Invalidate(infoPtr, NULL);
1727
1728     return (LRESULT)himlOld;
1729 }
1730
1731 /* Compute the natural height (based on the font size) for items. */
1732 static UINT
1733 TREEVIEW_NaturalHeight(TREEVIEW_INFO *infoPtr)
1734 {
1735     TEXTMETRICA tm;
1736     HDC hdc = GetDC(0);
1737     HFONT hOldFont = SelectObject(hdc, infoPtr->hFont);
1738
1739     GetTextMetricsA(hdc, &tm);
1740
1741     SelectObject(hdc, hOldFont);
1742     ReleaseDC(0, hdc);
1743
1744     /* The 16 is a hack because our fonts are tiny. */
1745     /* add 2 for the focus border and 1 more for margin some apps assume */
1746     return max(16, tm.tmHeight + tm.tmExternalLeading + 3);
1747 }
1748
1749 static LRESULT
1750 TREEVIEW_SetItemHeight(TREEVIEW_INFO *infoPtr, INT newHeight)
1751 {
1752     INT prevHeight = infoPtr->uItemHeight;
1753
1754     TRACE("%d \n", newHeight);
1755     if (newHeight == -1)
1756     {
1757         infoPtr->uItemHeight = TREEVIEW_NaturalHeight(infoPtr);
1758         infoPtr->bHeightSet = FALSE;
1759     }
1760     else
1761     {
1762         infoPtr->uItemHeight = newHeight;
1763         infoPtr->bHeightSet = TRUE;
1764     }
1765
1766     /* Round down, unless we support odd ("non even") heights. */
1767     if (!(infoPtr->dwStyle) & TVS_NONEVENHEIGHT)
1768         infoPtr->uItemHeight &= ~1;
1769
1770     if (infoPtr->uItemHeight != prevHeight)
1771     {
1772         TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
1773         TREEVIEW_UpdateScrollBars(infoPtr);
1774         TREEVIEW_Invalidate(infoPtr, NULL);
1775     }
1776
1777     return prevHeight;
1778 }
1779
1780 static LRESULT
1781 TREEVIEW_GetItemHeight(TREEVIEW_INFO *infoPtr)
1782 {
1783     TRACE("\n");
1784     return infoPtr->uItemHeight;
1785 }
1786
1787
1788 static LRESULT
1789 TREEVIEW_GetFont(TREEVIEW_INFO *infoPtr)
1790 {
1791     TRACE("%p\n", infoPtr->hFont);
1792     return (LRESULT)infoPtr->hFont;
1793 }
1794
1795
1796 static INT CALLBACK
1797 TREEVIEW_ResetTextWidth(LPVOID pItem, DWORD unused)
1798 {
1799     (void)unused;
1800
1801     ((TREEVIEW_ITEM *)pItem)->textWidth = 0;
1802
1803     return 1;
1804 }
1805
1806 static LRESULT
1807 TREEVIEW_SetFont(TREEVIEW_INFO *infoPtr, HFONT hFont, BOOL bRedraw)
1808 {
1809     UINT uHeight = infoPtr->uItemHeight;
1810
1811     TRACE("%p %i\n", hFont, bRedraw);
1812
1813     infoPtr->hFont = hFont ? hFont : GetStockObject(SYSTEM_FONT);
1814
1815     DeleteObject(infoPtr->hBoldFont);
1816     infoPtr->hBoldFont = TREEVIEW_CreateBoldFont(infoPtr->hFont);
1817
1818     if (!infoPtr->bHeightSet)
1819         infoPtr->uItemHeight = TREEVIEW_NaturalHeight(infoPtr);
1820
1821     if (uHeight != infoPtr->uItemHeight)
1822        TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
1823
1824     DPA_EnumCallback(infoPtr->items, TREEVIEW_ResetTextWidth, 0);
1825
1826     TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
1827     TREEVIEW_UpdateScrollBars(infoPtr);
1828
1829     if (bRedraw)
1830         TREEVIEW_Invalidate(infoPtr, NULL);
1831
1832     return 0;
1833 }
1834
1835
1836 static LRESULT
1837 TREEVIEW_GetLineColor(TREEVIEW_INFO *infoPtr)
1838 {
1839     TRACE("\n");
1840     return (LRESULT)infoPtr->clrLine;
1841 }
1842
1843 static LRESULT
1844 TREEVIEW_SetLineColor(TREEVIEW_INFO *infoPtr, COLORREF color)
1845 {
1846     COLORREF prevColor = infoPtr->clrLine;
1847
1848     TRACE("\n");
1849     infoPtr->clrLine = color;
1850     return (LRESULT)prevColor;
1851 }
1852
1853
1854 static LRESULT
1855 TREEVIEW_GetTextColor(TREEVIEW_INFO *infoPtr)
1856 {
1857     TRACE("\n");
1858     return (LRESULT)infoPtr->clrText;
1859 }
1860
1861 static LRESULT
1862 TREEVIEW_SetTextColor(TREEVIEW_INFO *infoPtr, COLORREF color)
1863 {
1864     COLORREF prevColor = infoPtr->clrText;
1865
1866     TRACE("\n");
1867     infoPtr->clrText = color;
1868
1869     if (infoPtr->clrText != prevColor)
1870         TREEVIEW_Invalidate(infoPtr, NULL);
1871
1872     return (LRESULT)prevColor;
1873 }
1874
1875
1876 static LRESULT
1877 TREEVIEW_GetBkColor(TREEVIEW_INFO *infoPtr)
1878 {
1879     TRACE("\n");
1880     return (LRESULT)infoPtr->clrBk;
1881 }
1882
1883 static LRESULT
1884 TREEVIEW_SetBkColor(TREEVIEW_INFO *infoPtr, COLORREF newColor)
1885 {
1886     COLORREF prevColor = infoPtr->clrBk;
1887
1888     TRACE("\n");
1889     infoPtr->clrBk = newColor;
1890
1891     if (newColor != prevColor)
1892         TREEVIEW_Invalidate(infoPtr, NULL);
1893
1894     return (LRESULT)prevColor;
1895 }
1896
1897
1898 static LRESULT
1899 TREEVIEW_GetInsertMarkColor(TREEVIEW_INFO *infoPtr)
1900 {
1901     TRACE("\n");
1902     return (LRESULT)infoPtr->clrInsertMark;
1903 }
1904
1905 static LRESULT
1906 TREEVIEW_SetInsertMarkColor(TREEVIEW_INFO *infoPtr, COLORREF color)
1907 {
1908     COLORREF prevColor = infoPtr->clrInsertMark;
1909
1910     TRACE("%lx\n", color);
1911     infoPtr->clrInsertMark = color;
1912
1913     return (LRESULT)prevColor;
1914 }
1915
1916
1917 static LRESULT
1918 TREEVIEW_SetInsertMark(TREEVIEW_INFO *infoPtr, BOOL wParam, HTREEITEM item)
1919 {
1920     TRACE("%d %p\n", wParam, item);
1921
1922     if (!TREEVIEW_ValidItem(infoPtr, item))
1923         return 0;
1924
1925     infoPtr->insertBeforeorAfter = wParam;
1926     infoPtr->insertMarkItem = item;
1927
1928     TREEVIEW_Invalidate(infoPtr, NULL);
1929
1930     return 1;
1931 }
1932
1933
1934 /************************************************************************
1935  * Some serious braindamage here. lParam is a pointer to both the
1936  * input HTREEITEM and the output RECT.
1937  */
1938 static LRESULT
1939 TREEVIEW_GetItemRect(TREEVIEW_INFO *infoPtr, BOOL fTextRect, LPRECT lpRect)
1940 {
1941     TREEVIEW_ITEM *wineItem;
1942     const HTREEITEM *pItem = (HTREEITEM *)lpRect;
1943
1944     TRACE("\n");
1945     /*
1946      * validate parameters
1947      */
1948     if (pItem == NULL)
1949         return FALSE;
1950
1951     wineItem = *pItem;
1952     if (!TREEVIEW_ValidItem(infoPtr, wineItem) || !ISVISIBLE(wineItem))
1953         return FALSE;
1954
1955     /*
1956      * If wParam is TRUE return the text size otherwise return
1957      * the whole item size
1958      */
1959     if (fTextRect)
1960     {
1961         /* Windows does not send TVN_GETDISPINFO here. */
1962
1963         lpRect->top = wineItem->rect.top;
1964         lpRect->bottom = wineItem->rect.bottom;
1965
1966         lpRect->left = wineItem->textOffset;
1967         lpRect->right = wineItem->textOffset + wineItem->textWidth;
1968     }
1969     else
1970     {
1971         *lpRect = wineItem->rect;
1972     }
1973
1974     TRACE("%s [L:%ld R:%ld T:%ld B:%ld]\n", fTextRect ? "text" : "item",
1975           lpRect->left, lpRect->right, lpRect->top, lpRect->bottom);
1976
1977     return TRUE;
1978 }
1979
1980 static inline LRESULT
1981 TREEVIEW_GetVisibleCount(TREEVIEW_INFO *infoPtr)
1982 {
1983     /* Suprise! This does not take integral height into account. */
1984     return infoPtr->clientHeight / infoPtr->uItemHeight;
1985 }
1986
1987
1988 static LRESULT
1989 TREEVIEW_GetItemA(TREEVIEW_INFO *infoPtr, LPTVITEMEXA tvItem)
1990 {
1991     TREEVIEW_ITEM *wineItem;
1992
1993     wineItem = tvItem->hItem;
1994     if (!TREEVIEW_ValidItem(infoPtr, wineItem))
1995         return FALSE;
1996
1997     TREEVIEW_UpdateDispInfo(infoPtr, wineItem, tvItem->mask);
1998
1999     if (tvItem->mask & TVIF_CHILDREN)
2000         tvItem->cChildren = wineItem->cChildren;
2001
2002     if (tvItem->mask & TVIF_HANDLE)
2003         tvItem->hItem = wineItem;
2004
2005     if (tvItem->mask & TVIF_IMAGE)
2006         tvItem->iImage = wineItem->iImage;
2007
2008     if (tvItem->mask & TVIF_INTEGRAL)
2009         tvItem->iIntegral = wineItem->iIntegral;
2010
2011     /* undocumented: windows ignores TVIF_PARAM and
2012      * * always sets lParam
2013      */
2014     tvItem->lParam = wineItem->lParam;
2015
2016     if (tvItem->mask & TVIF_SELECTEDIMAGE)
2017         tvItem->iSelectedImage = wineItem->iSelectedImage;
2018
2019     if (tvItem->mask & TVIF_STATE)
2020         tvItem->state = wineItem->state & tvItem->stateMask;
2021
2022     if (tvItem->mask & TVIF_TEXT)
2023         lstrcpynA(tvItem->pszText, wineItem->pszText, tvItem->cchTextMax);
2024
2025     TRACE("item <%p>, txt %p, img %p, mask %x\n",
2026           wineItem, tvItem->pszText, &tvItem->iImage, tvItem->mask);
2027
2028     return TRUE;
2029 }
2030
2031 /* Beware MSDN Library Visual Studio 6.0. It says -1 on failure, 0 on success,
2032  * which is wrong. */
2033 static LRESULT
2034 TREEVIEW_SetItemA(TREEVIEW_INFO *infoPtr, LPTVITEMEXA tvItem)
2035 {
2036     TREEVIEW_ITEM *wineItem;
2037     TREEVIEW_ITEM originalItem;
2038
2039     wineItem = tvItem->hItem;
2040
2041     TRACE("item %d,mask %x\n", TREEVIEW_GetItemIndex(infoPtr, wineItem),
2042           tvItem->mask);
2043
2044     if (!TREEVIEW_ValidItem(infoPtr, wineItem))
2045         return FALSE;
2046
2047     /* store the orignal item values */
2048     originalItem = *wineItem;
2049
2050     if (!TREEVIEW_DoSetItem(infoPtr, wineItem, tvItem))
2051         return FALSE;
2052
2053     /* If the text or TVIS_BOLD was changed, and it is visible, recalculate. */
2054     if ((tvItem->mask & TVIF_TEXT
2055          || (tvItem->mask & TVIF_STATE && tvItem->stateMask & TVIS_BOLD))
2056         && ISVISIBLE(wineItem))
2057     {
2058         TREEVIEW_UpdateDispInfo(infoPtr, wineItem, TVIF_TEXT);
2059         TREEVIEW_ComputeTextWidth(infoPtr, wineItem, 0);
2060     }
2061
2062     if (tvItem->mask != 0 && ISVISIBLE(wineItem))
2063     {
2064         /* The refresh updates everything, but we can't wait until then. */
2065         TREEVIEW_ComputeItemInternalMetrics(infoPtr, wineItem);
2066
2067         /* if any of the items values changed, redraw the item */
2068         if(memcmp(&originalItem, wineItem, sizeof(TREEVIEW_ITEM)))
2069         {
2070             if (tvItem->mask & TVIF_INTEGRAL)
2071             {
2072                 TREEVIEW_RecalculateVisibleOrder(infoPtr, wineItem);
2073                 TREEVIEW_UpdateScrollBars(infoPtr);
2074
2075                 TREEVIEW_Invalidate(infoPtr, NULL);
2076             }
2077             else
2078             {
2079                 TREEVIEW_UpdateScrollBars(infoPtr);
2080                 TREEVIEW_Invalidate(infoPtr, wineItem);
2081             }
2082         }
2083     }
2084
2085     return TRUE;
2086 }
2087
2088 static LRESULT
2089 TREEVIEW_GetItemW(TREEVIEW_INFO *infoPtr, LPTVITEMEXW tvItem)
2090 {
2091     TREEVIEW_ITEM *wineItem;
2092     INT         iItem;
2093     iItem = (INT)tvItem->hItem;
2094
2095     wineItem = tvItem->hItem;
2096     if(!TREEVIEW_ValidItem (infoPtr, wineItem))
2097         return FALSE;
2098
2099     TREEVIEW_UpdateDispInfo(infoPtr, wineItem, tvItem->mask);
2100
2101     if (tvItem->mask & TVIF_CHILDREN) {
2102         if (TVIF_CHILDREN==I_CHILDRENCALLBACK)
2103             FIXME("I_CHILDRENCALLBACK not supported\n");
2104         tvItem->cChildren = wineItem->cChildren;
2105     }
2106
2107     if (tvItem->mask & TVIF_HANDLE) {
2108         tvItem->hItem = wineItem;
2109     }
2110     if (tvItem->mask & TVIF_IMAGE) {
2111         tvItem->iImage = wineItem->iImage;
2112     }
2113     if (tvItem->mask & TVIF_INTEGRAL) {
2114         tvItem->iIntegral = wineItem->iIntegral;
2115     }
2116     /* undocumented: windows ignores TVIF_PARAM and
2117      * always sets lParam           */
2118     tvItem->lParam = wineItem->lParam;
2119     if (tvItem->mask & TVIF_SELECTEDIMAGE) {
2120         tvItem->iSelectedImage = wineItem->iSelectedImage;
2121     }
2122     if (tvItem->mask & TVIF_STATE) {
2123         tvItem->state = wineItem->state & tvItem->stateMask;
2124     }
2125
2126     if (tvItem->mask & TVIF_TEXT) {
2127         if (wineItem->pszText == LPSTR_TEXTCALLBACKA) {
2128             tvItem->pszText = LPSTR_TEXTCALLBACKW;
2129             FIXME(" GetItem called with LPSTR_TEXTCALLBACK\n");
2130         }
2131         else if (wineItem->pszText) {
2132             TRACE("orig str %s at %p\n",
2133                   debugstr_a(wineItem->pszText), wineItem->pszText);
2134             MultiByteToWideChar(CP_ACP, 0, wineItem->pszText,
2135                                 -1 , tvItem->pszText, tvItem->cchTextMax);
2136         }
2137     }
2138
2139     TRACE("item %d<%p>, txt %p<%s>, img %p, action %x\n",
2140           iItem, tvItem, tvItem->pszText, debugstr_w(tvItem->pszText),
2141           &tvItem->iImage, tvItem->mask);
2142     return TRUE;
2143 }
2144
2145 static LRESULT
2146 TREEVIEW_SetItemW(TREEVIEW_INFO *infoPtr, LPTVITEMEXW tvItem)
2147 {
2148     TVITEMEXA tvItemA;
2149     INT len;
2150     LRESULT rc;
2151
2152     tvItemA.mask = tvItem->mask;
2153     tvItemA.hItem = tvItem->hItem;
2154     tvItemA.state = tvItem->state;
2155     tvItemA.stateMask = tvItem->stateMask;
2156     if (tvItem->mask & TVIF_TEXT) {
2157         len = WideCharToMultiByte(CP_ACP, 0, tvItem->pszText, -1,
2158                                   NULL ,0 , NULL,NULL);
2159         if (len) {
2160             len ++;
2161             tvItemA.pszText = HeapAlloc(GetProcessHeap(),0,len*sizeof(WCHAR));
2162             len = WideCharToMultiByte(CP_ACP, 0, tvItem->pszText, -1,
2163                                       tvItemA.pszText ,len*sizeof(WCHAR),
2164                                       NULL,NULL);
2165         }
2166         else
2167             tvItemA.pszText = NULL;
2168     }
2169     tvItemA.cchTextMax = tvItem->cchTextMax;
2170     tvItemA.iImage = tvItem->iImage;
2171     tvItemA.iSelectedImage = tvItem->iSelectedImage;
2172     tvItemA.cChildren = tvItem->cChildren;
2173     tvItemA.lParam = tvItem->lParam;
2174     tvItemA.iIntegral = tvItem->iIntegral;
2175
2176     rc = TREEVIEW_SetItemA(infoPtr,&tvItemA);
2177     HeapFree(GetProcessHeap(),0,tvItemA.pszText);
2178     return rc;
2179 }
2180
2181 static LRESULT
2182 TREEVIEW_GetItemState(TREEVIEW_INFO *infoPtr, HTREEITEM wineItem, UINT mask)
2183 {
2184     TRACE("\n");
2185
2186     if (!wineItem || !TREEVIEW_ValidItem(infoPtr, wineItem))
2187         return 0;
2188
2189     return (wineItem->state & mask);
2190 }
2191
2192 static LRESULT
2193 TREEVIEW_GetNextItem(TREEVIEW_INFO *infoPtr, UINT which, HTREEITEM wineItem)
2194 {
2195     TREEVIEW_ITEM *retval;
2196
2197     retval = 0;
2198
2199     /* handle all the global data here */
2200     switch (which)
2201     {
2202     case TVGN_CHILD:            /* Special case: child of 0 is root */
2203         if (wineItem)
2204             break;
2205         /* fall through */
2206     case TVGN_ROOT:
2207         retval = infoPtr->root->firstChild;
2208         break;
2209
2210     case TVGN_CARET:
2211         retval = infoPtr->selectedItem;
2212         break;
2213
2214     case TVGN_FIRSTVISIBLE:
2215         retval = infoPtr->firstVisible;
2216         break;
2217
2218     case TVGN_DROPHILITE:
2219         retval = infoPtr->dropItem;
2220         break;
2221
2222     case TVGN_LASTVISIBLE:
2223         retval = TREEVIEW_GetLastListItem(infoPtr, infoPtr->root);
2224         break;
2225     }
2226
2227     if (retval)
2228     {
2229         TRACE("flags:%x, returns %p\n", which, retval);
2230         return (LRESULT)retval;
2231     }
2232
2233     if (wineItem == TVI_ROOT) wineItem = infoPtr->root;
2234
2235     if (!TREEVIEW_ValidItem(infoPtr, wineItem))
2236         return FALSE;
2237
2238     switch (which)
2239     {
2240     case TVGN_NEXT:
2241         retval = wineItem->nextSibling;
2242         break;
2243     case TVGN_PREVIOUS:
2244         retval = wineItem->prevSibling;
2245         break;
2246     case TVGN_PARENT:
2247         retval = (wineItem->parent != infoPtr->root) ? wineItem->parent : NULL;
2248         break;
2249     case TVGN_CHILD:
2250         retval = wineItem->firstChild;
2251         break;
2252     case TVGN_NEXTVISIBLE:
2253         retval = TREEVIEW_GetNextListItem(infoPtr, wineItem);
2254         break;
2255     case TVGN_PREVIOUSVISIBLE:
2256         retval = TREEVIEW_GetPrevListItem(infoPtr, wineItem);
2257         break;
2258     default:
2259         TRACE("Unknown msg %x,item %p\n", which, wineItem);
2260         break;
2261     }
2262
2263     TRACE("flags:%x, item %p;returns %p\n", which, wineItem, retval);
2264     return (LRESULT)retval;
2265 }
2266
2267
2268 static LRESULT
2269 TREEVIEW_GetCount(TREEVIEW_INFO *infoPtr)
2270 {
2271     TRACE(" %d\n", infoPtr->uNumItems);
2272     return (LRESULT)infoPtr->uNumItems;
2273 }
2274
2275 static VOID
2276 TREEVIEW_ToggleItemState(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
2277 {
2278     if (infoPtr->dwStyle & TVS_CHECKBOXES)
2279     {
2280         static const unsigned int state_table[] = { 0, 2, 1 };
2281
2282         unsigned int state;
2283
2284         state = STATEIMAGEINDEX(item->state);
2285         TRACE("state:%x\n", state);
2286         item->state &= ~TVIS_STATEIMAGEMASK;
2287
2288         if (state < 3)
2289             state = state_table[state];
2290
2291         item->state |= INDEXTOSTATEIMAGEMASK(state);
2292
2293         TRACE("state:%x\n", state);
2294         TREEVIEW_Invalidate(infoPtr, item);
2295     }
2296 }
2297
2298
2299 /* Painting *************************************************************/
2300
2301 /* Draw the lines and expand button for an item. Also draws one section
2302  * of the line from item's parent to item's parent's next sibling. */
2303 static void
2304 TREEVIEW_DrawItemLines(TREEVIEW_INFO *infoPtr, HDC hdc, TREEVIEW_ITEM *item)
2305 {
2306     LONG centerx, centery;
2307     BOOL lar = ((infoPtr->dwStyle
2308                  & (TVS_LINESATROOT|TVS_HASLINES|TVS_HASBUTTONS))
2309                 > TVS_LINESATROOT);
2310
2311     if (!lar && item->iLevel == 0)
2312         return;
2313
2314     centerx = (item->linesOffset + item->stateOffset) / 2;
2315     centery = (item->rect.top + item->rect.bottom) / 2;
2316
2317     if (infoPtr->dwStyle & TVS_HASLINES)
2318     {
2319         HPEN hOldPen, hNewPen;
2320         HTREEITEM parent;
2321
2322         /*
2323          * Get a dotted grey pen
2324          */
2325         hNewPen = CreatePen(PS_ALTERNATE, 0, infoPtr->clrLine);
2326         hOldPen = SelectObject(hdc, hNewPen);
2327
2328         MoveToEx(hdc, item->stateOffset, centery, NULL);
2329         LineTo(hdc, centerx - 1, centery);
2330
2331         if (item->prevSibling || item->parent != infoPtr->root)
2332         {
2333             MoveToEx(hdc, centerx, item->rect.top, NULL);
2334             LineTo(hdc, centerx, centery);
2335         }
2336
2337         if (item->nextSibling)
2338         {
2339             MoveToEx(hdc, centerx, centery, NULL);
2340             LineTo(hdc, centerx, item->rect.bottom + 1);
2341         }
2342
2343         /* Draw the line from our parent to its next sibling. */
2344         parent = item->parent;
2345         while (parent != infoPtr->root)
2346         {
2347             int pcenterx = (parent->linesOffset + parent->stateOffset) / 2;
2348
2349             if (parent->nextSibling
2350                 /* skip top-levels unless TVS_LINESATROOT */
2351                 && parent->stateOffset > parent->linesOffset)
2352             {
2353                 MoveToEx(hdc, pcenterx, item->rect.top, NULL);
2354                 LineTo(hdc, pcenterx, item->rect.bottom + 1);
2355             }
2356
2357             parent = parent->parent;
2358         }
2359
2360         SelectObject(hdc, hOldPen);
2361         DeleteObject(hNewPen);
2362     }
2363
2364     /*
2365      * Display the (+/-) signs
2366      */
2367
2368     if (infoPtr->dwStyle & TVS_HASBUTTONS)
2369     {
2370         if (item->cChildren)
2371         {
2372             LONG height = item->rect.bottom - item->rect.top;
2373             LONG width  = item->stateOffset - item->linesOffset;
2374             LONG rectsize = min(height, width) / 4;
2375             /* plussize = ceil(rectsize * 3/4) */
2376             LONG plussize = (rectsize + 1) * 3 / 4;
2377
2378             HPEN hNewPen  = CreatePen(PS_SOLID, 0, infoPtr->clrLine);
2379             HPEN hOldPen  = SelectObject(hdc, hNewPen);
2380             HBRUSH hbr    = CreateSolidBrush(infoPtr->clrBk);
2381             HBRUSH hbrOld = SelectObject(hdc, hbr);
2382
2383             Rectangle(hdc, centerx - rectsize, centery - rectsize,
2384                       centerx + rectsize + 1, centery + rectsize + 1);
2385
2386             SelectObject(hdc, hbrOld);
2387             DeleteObject(hbr);
2388
2389             SelectObject(hdc, hOldPen);
2390             DeleteObject(hNewPen);
2391
2392             MoveToEx(hdc, centerx - plussize + 1, centery, NULL);
2393             LineTo(hdc, centerx + plussize, centery);
2394
2395             if (!(item->state & TVIS_EXPANDED))
2396             {
2397                 MoveToEx(hdc, centerx, centery - plussize + 1, NULL);
2398                 LineTo(hdc, centerx, centery + plussize);
2399             }
2400         }
2401     }
2402 }
2403
2404 static void
2405 TREEVIEW_DrawItem(TREEVIEW_INFO *infoPtr, HDC hdc, TREEVIEW_ITEM *wineItem)
2406 {
2407     INT cditem;
2408     HFONT hOldFont;
2409     int centery;
2410
2411     hOldFont = SelectObject(hdc, TREEVIEW_FontForItem(infoPtr, wineItem));
2412
2413     TREEVIEW_UpdateDispInfo(infoPtr, wineItem, CALLBACK_MASK_ALL);
2414
2415     /* The custom draw handler can query the text rectangle,
2416      * so get ready. */
2417     TREEVIEW_ComputeTextWidth(infoPtr, wineItem, hdc);
2418
2419     cditem = 0;
2420
2421     if (infoPtr->cdmode & CDRF_NOTIFYITEMDRAW)
2422     {
2423         cditem = TREEVIEW_SendCustomDrawItemNotify
2424             (infoPtr, hdc, wineItem, CDDS_ITEMPREPAINT);
2425         TRACE("prepaint:cditem-app returns 0x%x\n", cditem);
2426
2427         if (cditem & CDRF_SKIPDEFAULT)
2428         {
2429             SelectObject(hdc, hOldFont);
2430             return;
2431         }
2432     }
2433
2434     if (cditem & CDRF_NEWFONT)
2435         TREEVIEW_ComputeTextWidth(infoPtr, wineItem, hdc);
2436
2437     TREEVIEW_DrawItemLines(infoPtr, hdc, wineItem);
2438
2439     centery = (wineItem->rect.top + wineItem->rect.bottom) / 2;
2440
2441     /*
2442      * Display the images associated with this item
2443      */
2444     {
2445         INT imageIndex;
2446
2447         /* State images are displayed to the left of the Normal image
2448          * image number is in state; zero should be `display no image'.
2449          */
2450         imageIndex = STATEIMAGEINDEX(wineItem->state);
2451
2452         if (infoPtr->himlState && imageIndex)
2453         {
2454             ImageList_Draw(infoPtr->himlState, imageIndex, hdc,
2455                            wineItem->stateOffset,
2456                            centery - infoPtr->stateImageHeight / 2,
2457                            ILD_NORMAL);
2458         }
2459
2460         /* Now, draw the normal image; can be either selected or
2461          * non-selected image.
2462          */
2463
2464         if ((wineItem->state & TVIS_SELECTED) && (wineItem->iSelectedImage))
2465         {
2466             /* The item is currently selected */
2467             imageIndex = wineItem->iSelectedImage;
2468         }
2469         else
2470         {
2471             /* The item is not selected */
2472             imageIndex = wineItem->iImage;
2473         }
2474
2475         if (infoPtr->himlNormal)
2476         {
2477             int ovlIdx = wineItem->state & TVIS_OVERLAYMASK;
2478
2479             ImageList_Draw(infoPtr->himlNormal, imageIndex, hdc,
2480                            wineItem->imageOffset,
2481                            centery - infoPtr->normalImageHeight / 2,
2482                            ILD_NORMAL | ovlIdx);
2483         }
2484     }
2485
2486
2487     /*
2488      * Display the text associated with this item
2489      */
2490
2491     /* Don't paint item's text if it's being edited */
2492     if (!infoPtr->hwndEdit || (infoPtr->selectedItem != wineItem))
2493     {
2494         if (wineItem->pszText)
2495         {
2496             COLORREF oldTextColor = 0;
2497             INT oldBkMode;
2498             HBRUSH hbrBk = 0;
2499             BOOL inFocus = (GetFocus() == infoPtr->hwnd);
2500             RECT rcText;
2501
2502             oldBkMode = SetBkMode(hdc, TRANSPARENT);
2503
2504             /* - If item is drop target or it is selected and window is in focus -
2505              * use blue background (COLOR_HIGHLIGHT).
2506              * - If item is selected, window is not in focus, but it has style
2507              * TVS_SHOWSELALWAYS - use grey background (COLOR_BTNFACE)
2508              * - Otherwise - don't fill background
2509              */
2510             if ((wineItem->state & TVIS_DROPHILITED) || ((wineItem == infoPtr->focusedItem) && !(wineItem->state & TVIS_SELECTED)) ||
2511                 ((wineItem->state & TVIS_SELECTED) && (!infoPtr->focusedItem) &&
2512                  (inFocus || (infoPtr->dwStyle & TVS_SHOWSELALWAYS))))
2513             {
2514                 if ((wineItem->state & TVIS_DROPHILITED) || inFocus)
2515                 {
2516                     hbrBk = CreateSolidBrush(GetSysColor(COLOR_HIGHLIGHT));
2517                     oldTextColor =
2518                         SetTextColor(hdc, GetSysColor(COLOR_HIGHLIGHTTEXT));
2519                 }
2520                 else
2521                 {
2522                     hbrBk = CreateSolidBrush(GetSysColor(COLOR_BTNFACE));
2523
2524                     if (infoPtr->clrText == -1)
2525                         oldTextColor =
2526                             SetTextColor(hdc, GetSysColor(COLOR_WINDOWTEXT));
2527                     else
2528                         oldTextColor = SetTextColor(hdc, infoPtr->clrText);
2529                 }
2530             }
2531             else
2532             {
2533                 if (infoPtr->clrText == -1)
2534                     oldTextColor =
2535                         SetTextColor(hdc, GetSysColor(COLOR_WINDOWTEXT));
2536                 else
2537                     oldTextColor = SetTextColor(hdc, infoPtr->clrText);
2538             }
2539
2540             rcText.top = wineItem->rect.top;
2541             rcText.bottom = wineItem->rect.bottom;
2542             rcText.left = wineItem->textOffset;
2543             rcText.right = rcText.left + wineItem->textWidth + 4;
2544
2545             if (hbrBk)
2546             {
2547                 FillRect(hdc, &rcText, hbrBk);
2548                 DeleteObject(hbrBk);
2549             }
2550
2551             /* Draw the box around the selected item */
2552             if ((wineItem == infoPtr->selectedItem) && inFocus)
2553             {
2554                 DrawFocusRect(hdc,&rcText);
2555             }
2556
2557             InflateRect(&rcText, -2, -1); /* allow for the focus rect */
2558
2559             TRACE("drawing text %s at (%ld,%ld)-(%ld,%ld)\n",
2560                   debugstr_a(wineItem->pszText),
2561                   rcText.left, rcText.top, rcText.right, rcText.bottom);
2562
2563             /* Draw it */
2564             DrawTextA(hdc,
2565                       wineItem->pszText,
2566                       lstrlenA(wineItem->pszText),
2567                       &rcText,
2568                       DT_CENTER | DT_VCENTER | DT_SINGLELINE | DT_NOPREFIX);
2569
2570             /* Restore the hdc state */
2571             SetTextColor(hdc, oldTextColor);
2572
2573             if (oldBkMode != TRANSPARENT)
2574                 SetBkMode(hdc, oldBkMode);
2575         }
2576     }
2577
2578     /* Draw insertion mark if necessary */
2579
2580     if (infoPtr->insertMarkItem)
2581         TRACE("item:%d,mark:%d\n",
2582               TREEVIEW_GetItemIndex(infoPtr, wineItem),
2583               (int)infoPtr->insertMarkItem);
2584
2585     if (wineItem == infoPtr->insertMarkItem)
2586     {
2587         HPEN hNewPen, hOldPen;
2588         int offset;
2589         int left, right;
2590
2591         hNewPen = CreatePen(PS_SOLID, 2, infoPtr->clrInsertMark);
2592         hOldPen = SelectObject(hdc, hNewPen);
2593
2594         if (infoPtr->insertBeforeorAfter)
2595             offset = wineItem->rect.bottom - 1;
2596         else
2597             offset = wineItem->rect.top + 1;
2598
2599         left = wineItem->textOffset - 2;
2600         right = wineItem->textOffset + wineItem->textWidth + 2;
2601
2602         MoveToEx(hdc, left, offset - 3, NULL);
2603         LineTo(hdc, left, offset + 4);
2604
2605         MoveToEx(hdc, left, offset, NULL);
2606         LineTo(hdc, right + 1, offset);
2607
2608         MoveToEx(hdc, right, offset + 3, NULL);
2609         LineTo(hdc, right, offset - 4);
2610
2611         SelectObject(hdc, hOldPen);
2612         DeleteObject(hNewPen);
2613     }
2614
2615     if (cditem & CDRF_NOTIFYPOSTPAINT)
2616     {
2617         cditem = TREEVIEW_SendCustomDrawItemNotify
2618             (infoPtr, hdc, wineItem, CDDS_ITEMPOSTPAINT);
2619         TRACE("postpaint:cditem-app returns 0x%x\n", cditem);
2620     }
2621
2622     SelectObject(hdc, hOldFont);
2623 }
2624
2625 /* Computes treeHeight and treeWidth and updates the scroll bars.
2626  */
2627 static void
2628 TREEVIEW_UpdateScrollBars(TREEVIEW_INFO *infoPtr)
2629 {
2630     TREEVIEW_ITEM *wineItem;
2631     HWND hwnd = infoPtr->hwnd;
2632     BOOL vert = FALSE;
2633     BOOL horz = FALSE;
2634     SCROLLINFO si;
2635     LONG scrollX = infoPtr->scrollX;
2636
2637     infoPtr->treeWidth = 0;
2638     infoPtr->treeHeight = 0;
2639
2640     /* We iterate through all visible items in order to get the tree height
2641      * and width */
2642     wineItem = infoPtr->root->firstChild;
2643
2644     while (wineItem != NULL)
2645     {
2646         if (ISVISIBLE(wineItem))
2647         {
2648             /* actually we draw text at textOffset + 2 */
2649             if (2+wineItem->textOffset+wineItem->textWidth > infoPtr->treeWidth)
2650                 infoPtr->treeWidth = wineItem->textOffset+wineItem->textWidth+2;
2651
2652             /* This is scroll-adjusted, but we fix this below. */
2653             infoPtr->treeHeight = wineItem->rect.bottom;
2654         }
2655
2656         wineItem = TREEVIEW_GetNextListItem(infoPtr, wineItem);
2657     }
2658
2659     /* Fix the scroll adjusted treeHeight and treeWidth. */
2660     if (infoPtr->root->firstChild)
2661         infoPtr->treeHeight -= infoPtr->root->firstChild->rect.top;
2662
2663     infoPtr->treeWidth += infoPtr->scrollX;
2664
2665     if (infoPtr->dwStyle & TVS_NOSCROLL) return;
2666
2667     /* Adding one scroll bar may take up enough space that it forces us
2668      * to add the other as well. */
2669     if (infoPtr->treeHeight > infoPtr->clientHeight)
2670     {
2671         vert = TRUE;
2672
2673         if (infoPtr->treeWidth
2674             > infoPtr->clientWidth - GetSystemMetrics(SM_CXVSCROLL))
2675             horz = TRUE;
2676     }
2677     else if (infoPtr->treeWidth > infoPtr->clientWidth)
2678         horz = TRUE;
2679
2680     if (!vert && horz && infoPtr->treeHeight
2681         > infoPtr->clientHeight - GetSystemMetrics(SM_CYVSCROLL))
2682         vert = TRUE;
2683
2684     if (horz && (infoPtr->dwStyle & TVS_NOHSCROLL)) horz = FALSE;
2685
2686     si.cbSize = sizeof(SCROLLINFO);
2687     si.fMask  = SIF_POS|SIF_RANGE|SIF_PAGE;
2688     si.nMin   = 0;
2689
2690     if (vert)
2691     {
2692         si.nPage = TREEVIEW_GetVisibleCount(infoPtr);
2693        if ( si.nPage )
2694        {
2695            si.nPos  = infoPtr->firstVisible->visibleOrder;
2696            si.nMax  = infoPtr->maxVisibleOrder - 1;
2697
2698            SetScrollInfo(hwnd, SB_VERT, &si, TRUE);
2699
2700            if (!(infoPtr->uInternalStatus & TV_VSCROLL))
2701                ShowScrollBar(hwnd, SB_VERT, TRUE);
2702            infoPtr->uInternalStatus |= TV_VSCROLL;
2703        }
2704        else
2705        {
2706            if (infoPtr->uInternalStatus & TV_VSCROLL)
2707                ShowScrollBar(hwnd, SB_VERT, FALSE);
2708            infoPtr->uInternalStatus &= ~TV_VSCROLL;
2709        }
2710     }
2711     else
2712     {
2713         if (infoPtr->uInternalStatus & TV_VSCROLL)
2714             ShowScrollBar(hwnd, SB_VERT, FALSE);
2715         infoPtr->uInternalStatus &= ~TV_VSCROLL;
2716     }
2717
2718     if (horz)
2719     {
2720         si.nPage = infoPtr->clientWidth;
2721         si.nPos  = infoPtr->scrollX;
2722         si.nMax  = infoPtr->treeWidth - 1;
2723
2724         if (si.nPos > si.nMax - max( si.nPage-1, 0 ))
2725         {
2726            si.nPos = si.nMax - max( si.nPage-1, 0 );
2727            scrollX = si.nPos;
2728         }
2729
2730         if (!(infoPtr->uInternalStatus & TV_HSCROLL))
2731             ShowScrollBar(hwnd, SB_HORZ, TRUE);
2732         infoPtr->uInternalStatus |= TV_HSCROLL;
2733
2734         SetScrollInfo(hwnd, SB_HORZ, &si, TRUE);
2735     }
2736     else
2737     {
2738         if (infoPtr->uInternalStatus & TV_HSCROLL)
2739             ShowScrollBar(hwnd, SB_HORZ, FALSE);
2740         infoPtr->uInternalStatus &= ~TV_HSCROLL;
2741
2742         scrollX = 0;
2743     }
2744
2745     if (infoPtr->scrollX != scrollX)
2746     {
2747         TREEVIEW_HScroll(infoPtr,
2748                          MAKEWPARAM(SB_THUMBPOSITION, scrollX));
2749     }
2750
2751     if (!horz)
2752         infoPtr->uInternalStatus &= ~TV_HSCROLL;
2753 }
2754
2755 /* CtrlSpy doesn't mention this, but CorelDRAW's object manager needs it. */
2756 static LRESULT
2757 TREEVIEW_EraseBackground(TREEVIEW_INFO *infoPtr, HDC hDC)
2758 {
2759     HBRUSH hBrush = CreateSolidBrush(infoPtr->clrBk);
2760     RECT rect;
2761
2762     GetClientRect(infoPtr->hwnd, &rect);
2763     FillRect(hDC, &rect, hBrush);
2764     DeleteObject(hBrush);
2765
2766     return 1;
2767 }
2768
2769 static void
2770 TREEVIEW_Refresh(TREEVIEW_INFO *infoPtr, HDC hdc, RECT *rc)
2771 {
2772     HWND hwnd = infoPtr->hwnd;
2773     RECT rect = *rc;
2774     TREEVIEW_ITEM *wineItem;
2775
2776     if (infoPtr->clientHeight == 0 || infoPtr->clientWidth == 0)
2777     {
2778         TRACE("empty window\n");
2779         return;
2780     }
2781
2782     infoPtr->cdmode = TREEVIEW_SendCustomDrawNotify(infoPtr, CDDS_PREPAINT,
2783                                                     hdc, rect);
2784
2785     if (infoPtr->cdmode == CDRF_SKIPDEFAULT)
2786     {
2787         ReleaseDC(hwnd, hdc);
2788         return;
2789     }
2790
2791     for (wineItem = infoPtr->root->firstChild;
2792          wineItem != NULL;
2793          wineItem = TREEVIEW_GetNextListItem(infoPtr, wineItem))
2794     {
2795         if (ISVISIBLE(wineItem))
2796         {
2797             /* Avoid unneeded calculations */
2798             if (wineItem->rect.top > rect.bottom)
2799                 break;
2800             if (wineItem->rect.bottom < rect.top)
2801                 continue;
2802
2803             TREEVIEW_DrawItem(infoPtr, hdc, wineItem);
2804         }
2805     }
2806
2807     TREEVIEW_UpdateScrollBars(infoPtr);
2808
2809     if (infoPtr->cdmode & CDRF_NOTIFYPOSTPAINT)
2810         infoPtr->cdmode =
2811             TREEVIEW_SendCustomDrawNotify(infoPtr, CDDS_POSTPAINT, hdc, rect);
2812 }
2813
2814 static void
2815 TREEVIEW_Invalidate(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
2816 {
2817     if (item != NULL)
2818         InvalidateRect(infoPtr->hwnd, &item->rect, TRUE);
2819     else
2820         InvalidateRect(infoPtr->hwnd, NULL, TRUE);
2821 }
2822
2823 static LRESULT
2824 TREEVIEW_Paint(TREEVIEW_INFO *infoPtr, WPARAM wParam)
2825 {
2826     HDC hdc;
2827     PAINTSTRUCT ps;
2828     RECT rc;
2829
2830     TRACE("\n");
2831
2832     if (wParam)
2833     {
2834         hdc = (HDC)wParam;
2835         if (!GetUpdateRect(infoPtr->hwnd, &rc, TRUE))
2836         {
2837             HBITMAP hbitmap;
2838             BITMAP bitmap;
2839             hbitmap = GetCurrentObject(hdc, OBJ_BITMAP);
2840             if (!hbitmap) return 0;
2841             GetObjectA(hbitmap, sizeof(BITMAP), &bitmap);
2842             rc.left = 0; rc.top = 0;
2843             rc.right = bitmap.bmWidth;
2844             rc.bottom = bitmap.bmHeight;
2845             TREEVIEW_EraseBackground(infoPtr, (HDC)wParam);
2846         }
2847     }
2848     else
2849     {
2850         hdc = BeginPaint(infoPtr->hwnd, &ps);
2851         rc = ps.rcPaint;
2852     }
2853
2854     if(infoPtr->bRedraw) /* WM_SETREDRAW sets bRedraw */
2855         TREEVIEW_Refresh(infoPtr, hdc, &rc);
2856
2857     if (!wParam)
2858         EndPaint(infoPtr->hwnd, &ps);
2859
2860     return 0;
2861 }
2862
2863
2864 /* Sorting **************************************************************/
2865
2866 /***************************************************************************
2867  * Forward the DPA local callback to the treeview owner callback
2868  */
2869 static INT WINAPI
2870 TREEVIEW_CallBackCompare(TREEVIEW_ITEM *first, TREEVIEW_ITEM *second, LPTVSORTCB pCallBackSort)
2871 {
2872     /* Forward the call to the client-defined callback */
2873     return pCallBackSort->lpfnCompare(first->lParam,
2874                                       second->lParam,
2875                                       pCallBackSort->lParam);
2876 }
2877
2878 /***************************************************************************
2879  * Treeview native sort routine: sort on item text.
2880  */
2881 static INT WINAPI
2882 TREEVIEW_SortOnName(TREEVIEW_ITEM *first, TREEVIEW_ITEM *second,
2883                      TREEVIEW_INFO *infoPtr)
2884 {
2885     TREEVIEW_UpdateDispInfo(infoPtr, first, TVIF_TEXT);
2886     TREEVIEW_UpdateDispInfo(infoPtr, second, TVIF_TEXT);
2887
2888     return strcasecmp(first->pszText, second->pszText);
2889 }
2890
2891 /* Returns the number of physical children belonging to item. */
2892 static INT
2893 TREEVIEW_CountChildren(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
2894 {
2895     INT cChildren = 0;
2896     HTREEITEM hti;
2897
2898     for (hti = item->firstChild; hti != NULL; hti = hti->nextSibling)
2899         cChildren++;
2900
2901     return cChildren;
2902 }
2903
2904 /* Returns a DPA containing a pointer to each physical child of item in
2905  * sibling order. If item has no children, an empty DPA is returned. */
2906 static HDPA
2907 TREEVIEW_BuildChildDPA(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
2908 {
2909     HTREEITEM child = item->firstChild;
2910
2911     HDPA list = DPA_Create(8);
2912     if (list == 0) return NULL;
2913
2914     for (child = item->firstChild; child != NULL; child = child->nextSibling)
2915     {
2916         if (DPA_InsertPtr(list, INT_MAX, child) == -1)
2917         {
2918             DPA_Destroy(list);
2919             return NULL;
2920         }
2921     }
2922
2923     return list;
2924 }
2925
2926 /***************************************************************************
2927  * Setup the treeview structure with regards of the sort method
2928  * and sort the children of the TV item specified in lParam
2929  * fRecurse: currently unused. Should be zero.
2930  * parent: if pSort!=NULL, should equal pSort->hParent.
2931  *         otherwise, item which child items are to be sorted.
2932  * pSort:  sort method info. if NULL, sort on item text.
2933  *         if non-NULL, sort on item's lParam content, and let the
2934  *         application decide what that means. See also TVM_SORTCHILDRENCB.
2935  */
2936
2937 static LRESULT
2938 TREEVIEW_Sort(TREEVIEW_INFO *infoPtr, BOOL fRecurse, HTREEITEM parent,
2939               LPTVSORTCB pSort)
2940 {
2941     INT cChildren;
2942     PFNDPACOMPARE pfnCompare;
2943     LPARAM lpCompare;
2944
2945     /* undocumented feature: TVI_ROOT or NULL means `sort the whole tree' */
2946     if (parent == TVI_ROOT || parent == NULL)
2947         parent = infoPtr->root;
2948
2949     /* Check for a valid handle to the parent item */
2950     if (!TREEVIEW_ValidItem(infoPtr, parent))
2951     {
2952         ERR("invalid item hParent=%x\n", (INT)parent);
2953         return FALSE;
2954     }
2955
2956     if (pSort)
2957     {
2958         pfnCompare = (PFNDPACOMPARE)TREEVIEW_CallBackCompare;
2959         lpCompare = (LPARAM)pSort;
2960     }
2961     else
2962     {
2963         pfnCompare = (PFNDPACOMPARE)TREEVIEW_SortOnName;
2964         lpCompare = (LPARAM)infoPtr;
2965     }
2966
2967     cChildren = TREEVIEW_CountChildren(infoPtr, parent);
2968
2969     /* Make sure there is something to sort */
2970     if (cChildren > 1)
2971     {
2972         /* TREEVIEW_ITEM rechaining */
2973         INT count = 0;
2974         HTREEITEM item = 0;
2975         HTREEITEM nextItem = 0;
2976         HTREEITEM prevItem = 0;
2977
2978         HDPA sortList = TREEVIEW_BuildChildDPA(infoPtr, parent);
2979
2980         if (sortList == NULL)
2981             return FALSE;
2982
2983         /* let DPA sort the list */
2984         DPA_Sort(sortList, pfnCompare, lpCompare);
2985
2986         /* The order of DPA entries has been changed, so fixup the
2987          * nextSibling and prevSibling pointers. */
2988
2989         item = (HTREEITEM)DPA_GetPtr(sortList, count++);
2990         while ((nextItem = (HTREEITEM)DPA_GetPtr(sortList, count++)) != NULL)
2991         {
2992             /* link the two current item toghether */
2993             item->nextSibling = nextItem;
2994             nextItem->prevSibling = item;
2995
2996             if (prevItem == NULL)
2997             {
2998                 /* this is the first item, update the parent */
2999                 parent->firstChild = item;
3000                 item->prevSibling = NULL;
3001             }
3002             else
3003             {
3004                 /* fix the back chaining */
3005                 item->prevSibling = prevItem;
3006             }
3007
3008             /* get ready for the next one */
3009             prevItem = item;
3010             item = nextItem;
3011         }
3012
3013         /* the last item is pointed to by item and never has a sibling */
3014         item->nextSibling = NULL;
3015         parent->lastChild = item;
3016
3017         DPA_Destroy(sortList);
3018
3019         TREEVIEW_VerifyTree(infoPtr);
3020
3021         if (parent->state & TVIS_EXPANDED)
3022         {
3023             int visOrder = infoPtr->firstVisible->visibleOrder;
3024
3025         if (parent == infoPtr->root)
3026             TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
3027         else
3028             TREEVIEW_RecalculateVisibleOrder(infoPtr, parent);
3029
3030             if (TREEVIEW_IsChildOf(parent, infoPtr->firstVisible))
3031             {
3032                 TREEVIEW_ITEM *item;
3033
3034                 for (item = infoPtr->root->firstChild; item != NULL;
3035                      item = TREEVIEW_GetNextListItem(infoPtr, item))
3036                 {
3037                     if (item->visibleOrder == visOrder)
3038                         break;
3039                 }
3040
3041                 TREEVIEW_SetFirstVisible(infoPtr, item, FALSE);
3042             }
3043
3044             TREEVIEW_Invalidate(infoPtr, NULL);
3045         }
3046
3047         return TRUE;
3048     }
3049     return FALSE;
3050 }
3051
3052
3053 /***************************************************************************
3054  * Setup the treeview structure with regards of the sort method
3055  * and sort the children of the TV item specified in lParam
3056  */
3057 static LRESULT
3058 TREEVIEW_SortChildrenCB(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPTVSORTCB pSort)
3059 {
3060     return TREEVIEW_Sort(infoPtr, wParam, pSort->hParent, pSort);
3061 }
3062
3063
3064 /***************************************************************************
3065  * Sort the children of the TV item specified in lParam.
3066  */
3067 static LRESULT
3068 TREEVIEW_SortChildren(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
3069 {
3070     return TREEVIEW_Sort(infoPtr, (BOOL)wParam, (HTREEITEM)lParam, NULL);
3071 }
3072
3073
3074 /* Expansion/Collapse ***************************************************/
3075
3076 static BOOL
3077 TREEVIEW_SendExpanding(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
3078                        UINT action)
3079 {
3080     return !TREEVIEW_SendTreeviewNotify(infoPtr, TVN_ITEMEXPANDINGW, action,
3081                                         TVIF_HANDLE | TVIF_STATE | TVIF_PARAM
3082                                         | TVIF_IMAGE | TVIF_SELECTEDIMAGE,
3083                                         0, wineItem);
3084 }
3085
3086 static VOID
3087 TREEVIEW_SendExpanded(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
3088                       UINT action)
3089 {
3090     TREEVIEW_SendTreeviewNotify(infoPtr, TVN_ITEMEXPANDEDW, action,
3091                                 TVIF_HANDLE | TVIF_STATE | TVIF_PARAM
3092                                 | TVIF_IMAGE | TVIF_SELECTEDIMAGE,
3093                                 0, wineItem);
3094 }
3095
3096
3097 /* This corresponds to TVM_EXPAND with TVE_COLLAPSE.
3098  * bRemoveChildren corresponds to TVE_COLLAPSERESET. */
3099 static BOOL
3100 TREEVIEW_Collapse(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
3101                   BOOL bRemoveChildren, BOOL bUser)
3102 {
3103     UINT action = TVE_COLLAPSE | (bRemoveChildren ? TVE_COLLAPSERESET : 0);
3104     BOOL bSetSelection, bSetFirstVisible;
3105
3106     TRACE("TVE_COLLAPSE %p %s\n", wineItem, TREEVIEW_ItemName(wineItem));
3107
3108     if (!(wineItem->state & TVIS_EXPANDED) || wineItem->firstChild == NULL)
3109         return FALSE;
3110
3111     if (bUser)
3112         TREEVIEW_SendExpanding(infoPtr, wineItem, action);
3113
3114     wineItem->state &= ~TVIS_EXPANDED;
3115
3116     if (bUser)
3117         TREEVIEW_SendExpanded(infoPtr, wineItem, action);
3118
3119     bSetSelection = (infoPtr->selectedItem != NULL
3120                      && TREEVIEW_IsChildOf(wineItem, infoPtr->selectedItem));
3121
3122     bSetFirstVisible = (infoPtr->firstVisible != NULL
3123                         && TREEVIEW_IsChildOf(wineItem, infoPtr->firstVisible));
3124
3125     if (bRemoveChildren)
3126     {
3127         TRACE("TVE_COLLAPSERESET\n");
3128         wineItem->state &= ~TVIS_EXPANDEDONCE;
3129         TREEVIEW_RemoveAllChildren(infoPtr, wineItem);
3130     }
3131
3132     if (wineItem->firstChild)
3133     {
3134         TREEVIEW_ITEM *item, *sibling;
3135
3136         sibling = TREEVIEW_GetNextListItem(infoPtr, wineItem);
3137
3138         for (item = wineItem->firstChild; item != sibling;
3139              item = TREEVIEW_GetNextListItem(infoPtr, item))
3140         {
3141             item->visibleOrder = -1;
3142         }
3143     }
3144
3145     TREEVIEW_RecalculateVisibleOrder(infoPtr, wineItem);
3146
3147     TREEVIEW_SetFirstVisible(infoPtr, bSetFirstVisible ? wineItem
3148                              : infoPtr->firstVisible, TRUE);
3149
3150     if (bSetSelection)
3151     {
3152         /* Don't call DoSelectItem, it sends notifications. */
3153         if (TREEVIEW_ValidItem(infoPtr, infoPtr->selectedItem))
3154             infoPtr->selectedItem->state &= ~TVIS_SELECTED;
3155         wineItem->state |= TVIS_SELECTED;
3156         infoPtr->selectedItem = wineItem;
3157
3158         TREEVIEW_EnsureVisible(infoPtr, wineItem, FALSE);
3159     }
3160
3161     TREEVIEW_UpdateScrollBars(infoPtr);
3162     TREEVIEW_Invalidate(infoPtr, NULL);
3163
3164     return TRUE;
3165 }
3166
3167 static BOOL
3168 TREEVIEW_Expand(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
3169                 BOOL bExpandPartial, BOOL bUser)
3170 {
3171     TRACE("\n");
3172
3173     if (!TREEVIEW_HasChildren(infoPtr, wineItem)
3174         || wineItem->state & TVIS_EXPANDED)
3175         return FALSE;
3176
3177     TRACE("TVE_EXPAND %p %s\n", wineItem, TREEVIEW_ItemName(wineItem));
3178
3179     if (bUser || !(wineItem->state & TVIS_EXPANDEDONCE))
3180     {
3181         if (!TREEVIEW_SendExpanding(infoPtr, wineItem, TVE_EXPAND))
3182         {
3183             TRACE("  TVN_ITEMEXPANDING returned TRUE, exiting...\n");
3184             return FALSE;
3185         }
3186
3187         wineItem->state |= TVIS_EXPANDED;
3188         TREEVIEW_SendExpanded(infoPtr, wineItem, TVE_EXPAND);
3189         wineItem->state |= TVIS_EXPANDEDONCE;
3190     }
3191     else
3192     {
3193         /* this item has already been expanded */
3194         wineItem->state |= TVIS_EXPANDED;
3195     }
3196
3197     if (bExpandPartial)
3198         FIXME("TVE_EXPANDPARTIAL not implemented\n");
3199
3200     TREEVIEW_RecalculateVisibleOrder(infoPtr, wineItem);
3201     TREEVIEW_UpdateSubTree(infoPtr, wineItem);
3202     TREEVIEW_UpdateScrollBars(infoPtr);
3203
3204     /* Scroll up so that as many children as possible are visible.
3205      * This looses when expanding causes an HScroll bar to appear, but we
3206      * don't know that yet, so the last item is obscured. */
3207     if (wineItem->firstChild != NULL)
3208     {
3209         int nChildren = wineItem->lastChild->visibleOrder
3210             - wineItem->firstChild->visibleOrder + 1;
3211
3212         int visible_pos = wineItem->visibleOrder
3213             - infoPtr->firstVisible->visibleOrder;
3214
3215         int rows_below = TREEVIEW_GetVisibleCount(infoPtr) - visible_pos - 1;
3216
3217         if (visible_pos > 0 && nChildren > rows_below)
3218         {
3219             int scroll = nChildren - rows_below;
3220
3221             if (scroll > visible_pos)
3222                 scroll = visible_pos;
3223
3224             if (scroll > 0)
3225             {
3226                 TREEVIEW_ITEM *newFirstVisible
3227                     = TREEVIEW_GetListItem(infoPtr, infoPtr->firstVisible,
3228                                            scroll);
3229
3230
3231                 TREEVIEW_SetFirstVisible(infoPtr, newFirstVisible, TRUE);
3232             }
3233         }
3234     }
3235
3236     TREEVIEW_Invalidate(infoPtr, NULL);
3237
3238     return TRUE;
3239 }
3240
3241 static BOOL
3242 TREEVIEW_Toggle(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem, BOOL bUser)
3243 {
3244     TRACE("\n");
3245
3246     if (wineItem->state & TVIS_EXPANDED)
3247         return TREEVIEW_Collapse(infoPtr, wineItem, FALSE, bUser);
3248     else
3249         return TREEVIEW_Expand(infoPtr, wineItem, FALSE, bUser);
3250 }
3251
3252 static VOID
3253 TREEVIEW_ExpandAll(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
3254 {
3255     TREEVIEW_Expand(infoPtr, item, FALSE, TRUE);
3256
3257     for (item = item->firstChild; item != NULL; item = item->nextSibling)
3258     {
3259         if (TREEVIEW_HasChildren(infoPtr, item))
3260             TREEVIEW_ExpandAll(infoPtr, item);
3261     }
3262 }
3263
3264 /* Note:If the specified item is the child of a collapsed parent item,
3265    the parent's list of child items is (recursively) expanded to reveal the
3266    specified item. This is mentioned for TREEVIEW_SelectItem; don't
3267    know if it also applies here.
3268 */
3269
3270 static LRESULT
3271 TREEVIEW_ExpandMsg(TREEVIEW_INFO *infoPtr, UINT flag, HTREEITEM wineItem)
3272 {
3273     if (!TREEVIEW_ValidItem(infoPtr, wineItem))
3274         return 0;
3275
3276     TRACE("For (%s) item:%d, flags %x, state:%d\n",
3277               TREEVIEW_ItemName(wineItem), flag,
3278               TREEVIEW_GetItemIndex(infoPtr, wineItem), wineItem->state);
3279
3280     switch (flag & TVE_TOGGLE)
3281     {
3282     case TVE_COLLAPSE:
3283         return TREEVIEW_Collapse(infoPtr, wineItem, flag & TVE_COLLAPSERESET,
3284                                  FALSE);
3285
3286     case TVE_EXPAND:
3287         return TREEVIEW_Expand(infoPtr, wineItem, flag & TVE_EXPANDPARTIAL,
3288                                FALSE);
3289
3290     case TVE_TOGGLE:
3291         return TREEVIEW_Toggle(infoPtr, wineItem, TRUE);
3292
3293     default:
3294         return 0;
3295     }
3296
3297 #if 0
3298     TRACE("Exiting, Item %p state is now %d...\n", wineItem, wineItem->state);
3299 #endif
3300 }
3301
3302 /* Hit-Testing **********************************************************/
3303
3304 static TREEVIEW_ITEM *
3305 TREEVIEW_HitTestPoint(TREEVIEW_INFO *infoPtr, POINT pt)
3306 {
3307     TREEVIEW_ITEM *wineItem;
3308     LONG row;
3309
3310     if (!infoPtr->firstVisible)
3311         return NULL;
3312
3313     row = pt.y / infoPtr->uItemHeight + infoPtr->firstVisible->visibleOrder;
3314
3315     for (wineItem = infoPtr->firstVisible; wineItem != NULL;
3316          wineItem = TREEVIEW_GetNextListItem(infoPtr, wineItem))
3317     {
3318         if (row >= wineItem->visibleOrder
3319             && row < wineItem->visibleOrder + wineItem->iIntegral)
3320             break;
3321     }
3322
3323     return wineItem;
3324 }
3325
3326 static LRESULT
3327 TREEVIEW_HitTest(TREEVIEW_INFO *infoPtr, LPTVHITTESTINFO lpht)
3328 {
3329     TREEVIEW_ITEM *wineItem;
3330     RECT rect;
3331     UINT status;
3332     LONG x, y;
3333
3334     lpht->hItem = 0;
3335     GetClientRect(infoPtr->hwnd, &rect);
3336     status = 0;
3337     x = lpht->pt.x;
3338     y = lpht->pt.y;
3339
3340     if (x < rect.left)
3341     {
3342         status |= TVHT_TOLEFT;
3343     }
3344     else if (x > rect.right)
3345     {
3346         status |= TVHT_TORIGHT;
3347     }
3348
3349     if (y < rect.top)
3350     {
3351         status |= TVHT_ABOVE;
3352     }
3353     else if (y > rect.bottom)
3354     {
3355         status |= TVHT_BELOW;
3356     }
3357
3358     if (status)
3359     {
3360         lpht->flags = status;
3361         return (LRESULT)(HTREEITEM)NULL;
3362     }
3363
3364     wineItem = TREEVIEW_HitTestPoint(infoPtr, lpht->pt);
3365     if (!wineItem)
3366     {
3367         lpht->flags = TVHT_NOWHERE;
3368         return (LRESULT)(HTREEITEM)NULL;
3369     }
3370
3371     if (x >= wineItem->textOffset + wineItem->textWidth)
3372     {
3373         lpht->flags = TVHT_ONITEMRIGHT;
3374     }
3375     else if (x >= wineItem->textOffset)
3376     {
3377         lpht->flags = TVHT_ONITEMLABEL;
3378     }
3379     else if (x >= wineItem->imageOffset)
3380     {
3381         lpht->flags = TVHT_ONITEMICON;
3382     }
3383     else if (x >= wineItem->stateOffset)
3384     {
3385         lpht->flags = TVHT_ONITEMSTATEICON;
3386     }
3387     else if (x >= wineItem->linesOffset && infoPtr->dwStyle & TVS_HASBUTTONS)
3388     {
3389         lpht->flags = TVHT_ONITEMBUTTON;
3390     }
3391     else
3392     {
3393         lpht->flags = TVHT_ONITEMINDENT;
3394     }
3395
3396     lpht->hItem = wineItem;
3397     TRACE("(%ld,%ld):result %x\n", lpht->pt.x, lpht->pt.y, lpht->flags);
3398
3399     return (LRESULT)wineItem;
3400 }
3401
3402 /* Item Label Editing ***************************************************/
3403
3404 static LRESULT
3405 TREEVIEW_GetEditControl(TREEVIEW_INFO *infoPtr)
3406 {
3407     return (LRESULT)infoPtr->hwndEdit;
3408 }
3409
3410 static LRESULT CALLBACK
3411 TREEVIEW_Edit_SubclassProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
3412 {
3413     TREEVIEW_INFO *infoPtr;
3414     BOOL bCancel = FALSE;
3415
3416     switch (uMsg)
3417     {
3418     case WM_PAINT:
3419         {
3420             LRESULT rc;
3421             TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(GetParent(hwnd));
3422
3423             TRACE("WM_PAINT start\n");
3424             rc = CallWindowProcA(infoPtr->wpEditOrig, hwnd, uMsg, wParam,
3425                                  lParam);
3426             TRACE("WM_PAINT done\n");
3427             return rc;
3428         }
3429
3430     case WM_KILLFOCUS:
3431     {
3432         TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(GetParent(hwnd));
3433         if (infoPtr->bIgnoreEditKillFocus)
3434             return TRUE;
3435
3436         break;
3437     }
3438
3439     case WM_GETDLGCODE:
3440         return DLGC_WANTARROWS | DLGC_WANTALLKEYS;
3441
3442     case WM_KEYDOWN:
3443         if (wParam == (WPARAM)VK_ESCAPE)
3444         {
3445             bCancel = TRUE;
3446             break;
3447         }
3448         else if (wParam == (WPARAM)VK_RETURN)
3449         {
3450             break;
3451         }
3452
3453         /* fall through */
3454     default:
3455         {
3456             TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(GetParent(hwnd));
3457
3458             return CallWindowProcA(infoPtr->wpEditOrig, hwnd, uMsg, wParam,
3459                                    lParam);
3460         }
3461     }
3462
3463     /* Processing TVN_ENDLABELEDIT message could kill the focus       */
3464     /* eg. Using a messagebox                                         */
3465
3466     infoPtr = TREEVIEW_GetInfoPtr(GetParent(hwnd));
3467     infoPtr->bIgnoreEditKillFocus = TRUE;
3468     TREEVIEW_EndEditLabelNow(infoPtr, bCancel || !infoPtr->bLabelChanged);
3469     infoPtr->bIgnoreEditKillFocus = FALSE;
3470
3471     return 0;
3472 }
3473
3474
3475 /* should handle edit control messages here */
3476
3477 static LRESULT
3478 TREEVIEW_Command(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
3479 {
3480     TRACE("%x %ld\n", wParam, lParam);
3481
3482     switch (HIWORD(wParam))
3483     {
3484     case EN_UPDATE:
3485         {
3486             /*
3487              * Adjust the edit window size
3488              */
3489             char buffer[1024];
3490             TREEVIEW_ITEM *editItem = infoPtr->selectedItem;
3491             HDC hdc = GetDC(infoPtr->hwndEdit);
3492             SIZE sz;
3493             int len;
3494             HFONT hFont, hOldFont = 0;
3495
3496             infoPtr->bLabelChanged = TRUE;
3497
3498             len = GetWindowTextA(infoPtr->hwndEdit, buffer, sizeof(buffer));
3499
3500             /* Select font to get the right dimension of the string */
3501             hFont = (HFONT)SendMessageA(infoPtr->hwndEdit, WM_GETFONT, 0, 0);
3502             if (hFont != 0)
3503             {
3504                 hOldFont = SelectObject(hdc, hFont);
3505             }
3506
3507             if (GetTextExtentPoint32A(hdc, buffer, strlen(buffer), &sz))
3508             {
3509                 TEXTMETRICA textMetric;
3510
3511                 /* Add Extra spacing for the next character */
3512                 GetTextMetricsA(hdc, &textMetric);
3513                 sz.cx += (textMetric.tmMaxCharWidth * 2);
3514
3515                 sz.cx = max(sz.cx, textMetric.tmMaxCharWidth * 3);
3516                 sz.cx = min(sz.cx,
3517                             infoPtr->clientWidth - editItem->textOffset + 2);
3518
3519                 SetWindowPos(infoPtr->hwndEdit,
3520                              HWND_TOP,
3521                              0,
3522                              0,
3523                              sz.cx,
3524                              editItem->rect.bottom - editItem->rect.top + 3,
3525                              SWP_NOMOVE | SWP_DRAWFRAME);
3526             }
3527
3528             if (hFont != 0)
3529             {
3530                 SelectObject(hdc, hOldFont);
3531             }
3532
3533             ReleaseDC(infoPtr->hwnd, hdc);
3534             break;
3535         }
3536
3537     default:
3538         return SendMessageA(GetParent(infoPtr->hwnd), WM_COMMAND, wParam, lParam);
3539     }
3540
3541     return 0;
3542 }
3543
3544 static HWND
3545 TREEVIEW_EditLabelA(TREEVIEW_INFO *infoPtr, HTREEITEM hItem)
3546 {
3547     HWND hwnd = infoPtr->hwnd;
3548     HWND hwndEdit;
3549     SIZE sz;
3550     TREEVIEW_ITEM *editItem = hItem;
3551     HINSTANCE hinst = (HINSTANCE)GetWindowLongA(hwnd, GWL_HINSTANCE);
3552     HDC hdc;
3553     HFONT hOldFont=0;
3554     TEXTMETRICA textMetric;
3555
3556     TRACE("%x %p\n", (unsigned)hwnd, hItem);
3557     if (!TREEVIEW_ValidItem(infoPtr, editItem))
3558         return NULL;
3559
3560     if (infoPtr->hwndEdit)
3561         return infoPtr->hwndEdit;
3562
3563     infoPtr->bLabelChanged = FALSE;
3564
3565     /* Make sure that edit item is selected */
3566     TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, hItem, TVC_UNKNOWN);
3567     TREEVIEW_EnsureVisible(infoPtr, hItem, TRUE);
3568
3569     TREEVIEW_UpdateDispInfo(infoPtr, editItem, TVIF_TEXT);
3570
3571     hdc = GetDC(hwnd);
3572     /* Select the font to get appropriate metric dimensions */
3573     if (infoPtr->hFont != 0)
3574     {
3575         hOldFont = SelectObject(hdc, infoPtr->hFont);
3576     }
3577
3578     /* Get string length in pixels */
3579     GetTextExtentPoint32A(hdc, editItem->pszText, strlen(editItem->pszText),
3580                           &sz);
3581
3582     /* Add Extra spacing for the next character */
3583     GetTextMetricsA(hdc, &textMetric);
3584     sz.cx += (textMetric.tmMaxCharWidth * 2);
3585
3586     sz.cx = max(sz.cx, textMetric.tmMaxCharWidth * 3);
3587     sz.cx = min(sz.cx, infoPtr->clientWidth - editItem->textOffset + 2);
3588
3589     if (infoPtr->hFont != 0)
3590     {
3591         SelectObject(hdc, hOldFont);
3592     }
3593
3594     ReleaseDC(hwnd, hdc);
3595     hwndEdit = CreateWindowExA(WS_EX_LEFT,
3596                                "EDIT",
3597                                0,
3598                                WS_CHILD | WS_BORDER | ES_AUTOHSCROLL |
3599                                WS_CLIPSIBLINGS | ES_WANTRETURN |
3600                                ES_LEFT, editItem->textOffset - 2,
3601                                editItem->rect.top - 1, sz.cx + 3,
3602                                editItem->rect.bottom -
3603                                editItem->rect.top + 3, hwnd, 0, hinst, 0);
3604 /* FIXME: (HMENU)IDTVEDIT,pcs->hInstance,0); */
3605
3606     infoPtr->hwndEdit = hwndEdit;
3607
3608     /* Get a 2D border. */
3609     SetWindowLongA(hwndEdit, GWL_EXSTYLE,
3610                    GetWindowLongA(hwndEdit, GWL_EXSTYLE) & ~WS_EX_CLIENTEDGE);
3611     SetWindowLongA(hwndEdit, GWL_STYLE,
3612                    GetWindowLongA(hwndEdit, GWL_STYLE) | WS_BORDER);
3613
3614     SendMessageA(hwndEdit, WM_SETFONT,
3615                  (WPARAM)TREEVIEW_FontForItem(infoPtr, editItem), FALSE);
3616
3617     infoPtr->wpEditOrig = (WNDPROC)SetWindowLongA(hwndEdit, GWL_WNDPROC,
3618                                                   (DWORD)
3619                                                   TREEVIEW_Edit_SubclassProc);
3620
3621     if (TREEVIEW_BeginLabelEditNotify(infoPtr, editItem))
3622     {
3623         DestroyWindow(hwndEdit);
3624         infoPtr->hwndEdit = 0;
3625         return NULL;
3626     }
3627
3628     infoPtr->selectedItem = hItem;
3629     SetWindowTextA(hwndEdit, editItem->pszText);
3630     SetFocus(hwndEdit);
3631     SendMessageA(hwndEdit, EM_SETSEL, 0, -1);
3632     ShowWindow(hwndEdit, SW_SHOW);
3633
3634     return hwndEdit;
3635 }
3636
3637
3638 static LRESULT
3639 TREEVIEW_EndEditLabelNow(TREEVIEW_INFO *infoPtr, BOOL bCancel)
3640 {
3641     HWND hwnd = infoPtr->hwnd;
3642     TREEVIEW_ITEM *editedItem = infoPtr->selectedItem;
3643     NMTVDISPINFOA tvdi;
3644     BOOL bCommit;
3645     char tmpText[1024] = { '\0' };
3646     int iLength = 0;
3647
3648     if (!infoPtr->hwndEdit)
3649         return FALSE;
3650
3651     tvdi.hdr.hwndFrom = hwnd;
3652     tvdi.hdr.idFrom = GetWindowLongA(hwnd, GWL_ID);
3653     tvdi.hdr.code = get_notifycode(infoPtr, TVN_ENDLABELEDITW);
3654     tvdi.item.mask = 0;
3655     tvdi.item.hItem = editedItem;
3656     tvdi.item.state = editedItem->state;
3657     tvdi.item.lParam = editedItem->lParam;
3658
3659     if (!bCancel)
3660     {
3661         iLength = GetWindowTextA(infoPtr->hwndEdit, tmpText, 1023);
3662
3663         if (iLength >= 1023)
3664         {
3665             ERR("Insufficient space to retrieve new item label\n");
3666         }
3667
3668         tvdi.item.pszText = tmpText;
3669         tvdi.item.cchTextMax = iLength + 1;
3670     }
3671     else
3672     {
3673         tvdi.item.pszText = NULL;
3674         tvdi.item.cchTextMax = 0;
3675     }
3676
3677     bCommit = (BOOL)TREEVIEW_SendRealNotify(infoPtr,
3678                                  (WPARAM)tvdi.hdr.idFrom, (LPARAM)&tvdi);
3679
3680     if (!bCancel && bCommit)    /* Apply the changes */
3681     {
3682         if (strcmp(tmpText, editedItem->pszText) != 0)
3683         {
3684             if (NULL == COMCTL32_ReAlloc(editedItem->pszText, iLength + 1))
3685             {
3686                 ERR("OutOfMemory, cannot allocate space for label\n");
3687                 DestroyWindow(infoPtr->hwndEdit);
3688                 infoPtr->hwndEdit = 0;
3689                 return FALSE;
3690             }
3691             else
3692             {
3693                 editedItem->cchTextMax = iLength + 1;
3694                 lstrcpyA(editedItem->pszText, tmpText);
3695             }
3696         }
3697     }
3698
3699     ShowWindow(infoPtr->hwndEdit, SW_HIDE);
3700     DestroyWindow(infoPtr->hwndEdit);
3701     infoPtr->hwndEdit = 0;
3702     return TRUE;
3703 }
3704
3705 static LRESULT
3706 TREEVIEW_HandleTimer(TREEVIEW_INFO *infoPtr, WPARAM wParam)
3707 {
3708     if (wParam != TV_EDIT_TIMER)
3709     {
3710         ERR("got unknown timer\n");
3711         return 1;
3712     }
3713
3714     KillTimer(infoPtr->hwnd, TV_EDIT_TIMER);
3715     infoPtr->Timer &= ~TV_EDIT_TIMER_SET;
3716
3717     TREEVIEW_EditLabelA(infoPtr, infoPtr->selectedItem);
3718
3719     return 0;
3720 }
3721
3722
3723 /* Mouse Tracking/Drag **************************************************/
3724
3725 /***************************************************************************
3726  * This is quite unusual piece of code, but that's how it's implemented in
3727  * Windows.
3728  */
3729 static LRESULT
3730 TREEVIEW_TrackMouse(TREEVIEW_INFO *infoPtr, POINT pt)
3731 {
3732     INT cxDrag = GetSystemMetrics(SM_CXDRAG);
3733     INT cyDrag = GetSystemMetrics(SM_CYDRAG);
3734     RECT r;
3735     MSG msg;
3736
3737     r.top = pt.y - cyDrag;
3738     r.left = pt.x - cxDrag;
3739     r.bottom = pt.y + cyDrag;
3740     r.right = pt.x + cxDrag;
3741
3742     SetCapture(infoPtr->hwnd);
3743
3744     while (1)
3745     {
3746         if (PeekMessageA(&msg, 0, 0, 0, PM_REMOVE | PM_NOYIELD))
3747         {
3748             if (msg.message == WM_MOUSEMOVE)
3749             {
3750                 pt.x = SLOWORD(msg.lParam);
3751                 pt.y = SHIWORD(msg.lParam);
3752                 if (PtInRect(&r, pt))
3753                     continue;
3754                 else
3755                 {
3756                     ReleaseCapture();
3757                     return 1;
3758                 }
3759             }
3760             else if (msg.message >= WM_LBUTTONDOWN &&
3761                      msg.message <= WM_RBUTTONDBLCLK)
3762             {
3763                 if (msg.message == WM_RBUTTONUP)
3764                     TREEVIEW_RButtonUp(infoPtr, &pt);
3765                 break;
3766             }
3767
3768             DispatchMessageA(&msg);
3769         }
3770
3771         if (GetCapture() != infoPtr->hwnd)
3772             return 0;
3773     }
3774
3775     ReleaseCapture();
3776     return 0;
3777 }
3778
3779
3780 static LRESULT
3781 TREEVIEW_LButtonDoubleClick(TREEVIEW_INFO *infoPtr, LPARAM lParam)
3782 {
3783     TREEVIEW_ITEM *wineItem;
3784     TVHITTESTINFO hit;
3785
3786     TRACE("\n");
3787     SetFocus(infoPtr->hwnd);
3788
3789     if (infoPtr->Timer & TV_EDIT_TIMER_SET)
3790     {
3791         /* If there is pending 'edit label' event - kill it now */
3792         KillTimer(infoPtr->hwnd, TV_EDIT_TIMER);
3793     }
3794
3795     hit.pt.x = SLOWORD(lParam);
3796     hit.pt.y = SHIWORD(lParam);
3797
3798     wineItem = (TREEVIEW_ITEM *)TREEVIEW_HitTest(infoPtr, &hit);
3799     if (!wineItem)
3800         return 0;
3801     TRACE("item %d\n", TREEVIEW_GetItemIndex(infoPtr, wineItem));
3802
3803     if (TREEVIEW_SendSimpleNotify(infoPtr, NM_DBLCLK) == FALSE)
3804     {                           /* FIXME! */
3805         switch (hit.flags)
3806         {
3807         case TVHT_ONITEMRIGHT:
3808             /* FIXME: we should not have sent NM_DBLCLK in this case. */
3809             break;
3810
3811         case TVHT_ONITEMINDENT:
3812             if (!(infoPtr->dwStyle & TVS_HASLINES))
3813             {
3814                 break;
3815             }
3816             else
3817             {
3818                 int level = hit.pt.x / infoPtr->uIndent;
3819                 if (!(infoPtr->dwStyle & TVS_LINESATROOT)) level++;
3820
3821                 while (wineItem->iLevel > level)
3822                 {
3823                     wineItem = wineItem->parent;
3824                 }
3825
3826                 /* fall through */
3827             }
3828
3829         case TVHT_ONITEMLABEL:
3830         case TVHT_ONITEMICON:
3831         case TVHT_ONITEMBUTTON:
3832             TREEVIEW_Toggle(infoPtr, wineItem, TRUE);
3833             break;
3834
3835         case TVHT_ONITEMSTATEICON:
3836            if (infoPtr->dwStyle & TVS_CHECKBOXES)
3837                TREEVIEW_ToggleItemState(infoPtr, wineItem);
3838            else
3839                TREEVIEW_Toggle(infoPtr, wineItem, TRUE);
3840            break;
3841         }
3842     }
3843     return TRUE;
3844 }
3845
3846
3847 static LRESULT
3848 TREEVIEW_LButtonDown(TREEVIEW_INFO *infoPtr, LPARAM lParam)
3849 {
3850     HWND hwnd = infoPtr->hwnd;
3851     TVHITTESTINFO ht;
3852     BOOL bTrack;
3853     HTREEITEM tempItem;
3854
3855     /* If Edit control is active - kill it and return.
3856      * The best way to do it is to set focus to itself.
3857      * Edit control subclassed procedure will automatically call
3858      * EndEditLabelNow.
3859      */
3860     if (infoPtr->hwndEdit)
3861     {
3862         SetFocus(hwnd);
3863         return 0;
3864     }
3865
3866     ht.pt.x = SLOWORD(lParam);
3867     ht.pt.y = SHIWORD(lParam);
3868
3869     TREEVIEW_HitTest(infoPtr, &ht);
3870     TRACE("item %d\n", TREEVIEW_GetItemIndex(infoPtr, ht.hItem));
3871
3872     /* update focusedItem and redraw both items */
3873     if(ht.hItem && (ht.flags & TVHT_ONITEM))
3874     {
3875         infoPtr->focusedItem = ht.hItem;
3876         InvalidateRect(hwnd, &(((HTREEITEM)(ht.hItem))->rect), TRUE);
3877
3878         if(infoPtr->selectedItem)
3879             InvalidateRect(hwnd, &(infoPtr->selectedItem->rect), TRUE);
3880     }
3881
3882     bTrack = (ht.flags & TVHT_ONITEM)
3883         && !(infoPtr->dwStyle & TVS_DISABLEDRAGDROP);
3884
3885     /* Send NM_CLICK right away */
3886     if (!bTrack)
3887         if (TREEVIEW_SendSimpleNotify(infoPtr, NM_CLICK))
3888             goto setfocus;
3889
3890     if (ht.flags & TVHT_ONITEMBUTTON)
3891     {
3892         TREEVIEW_Toggle(infoPtr, ht.hItem, TRUE);
3893         goto setfocus;
3894     }
3895     else if (bTrack)
3896     {   /* if TREEVIEW_TrackMouse == 1 dragging occurred and the cursor left the dragged item's rectangle */
3897         if (TREEVIEW_TrackMouse(infoPtr, ht.pt))
3898         {
3899             TREEVIEW_SendTreeviewDnDNotify(infoPtr, TVN_BEGINDRAGW, ht.hItem, ht.pt);
3900             infoPtr->dropItem = ht.hItem;
3901
3902             /* clean up focusedItem as we dragged and won't select this item */
3903             if(infoPtr->focusedItem)
3904             {
3905                 /* refresh the item that was focused */
3906                 tempItem = infoPtr->focusedItem;
3907                 infoPtr->focusedItem = 0;
3908                 InvalidateRect(infoPtr->hwnd, &tempItem->rect, TRUE);
3909
3910                 /* refresh the selected item to return the filled background */
3911                 InvalidateRect(infoPtr->hwnd, &(infoPtr->selectedItem->rect), TRUE);
3912             }
3913
3914             return 0;
3915         }
3916     }
3917
3918     if (TREEVIEW_SendSimpleNotify(infoPtr, NM_CLICK))
3919         goto setfocus;
3920
3921     /*
3922      * If the style allows editing and the node is already selected
3923      * and the click occurred on the item label...
3924      */
3925     if ((infoPtr->dwStyle & TVS_EDITLABELS) &&
3926                 (ht.flags & TVHT_ONITEMLABEL) && (infoPtr->selectedItem == ht.hItem))
3927     {
3928         if (infoPtr->Timer & TV_EDIT_TIMER_SET)
3929             KillTimer(hwnd, TV_EDIT_TIMER);
3930
3931         SetTimer(hwnd, TV_EDIT_TIMER, GetDoubleClickTime(), 0);
3932         infoPtr->Timer |= TV_EDIT_TIMER_SET;
3933     }
3934     else if (ht.flags & TVHT_ONITEM) /* select the item if the hit was inside of the icon or text */
3935     {
3936         /*
3937          * if we are TVS_SINGLEEXPAND then we want this single click to
3938          * do a bunch of things.
3939          */
3940         if((infoPtr->dwStyle & TVS_SINGLEEXPAND) &&
3941           (infoPtr->hwndEdit == 0))
3942         {
3943             TREEVIEW_ITEM *SelItem;
3944
3945             /*
3946              * Send the notification
3947              */
3948             TREEVIEW_SendTreeviewNotify(infoPtr, TVN_SINGLEEXPAND, TVC_UNKNOWN, TVIF_HANDLE | TVIF_PARAM, ht.hItem, 0);
3949
3950             /*
3951              * Close the previous selection all the way to the root
3952              * as long as the new selection is not a child
3953              */
3954             if((infoPtr->selectedItem)
3955                 && (infoPtr->selectedItem != ht.hItem))
3956             {
3957                 BOOL closeit = TRUE;
3958                 SelItem = ht.hItem;
3959
3960                 /* determine if the hitItem is a child of the currently selected item */
3961                 while(closeit && SelItem && TREEVIEW_ValidItem(infoPtr, SelItem) && (SelItem != infoPtr->root))
3962                 {
3963                     closeit = (SelItem != infoPtr->selectedItem);
3964                     SelItem = SelItem->parent;
3965                 }
3966
3967                 if(closeit)
3968                 {
3969                     if(TREEVIEW_ValidItem(infoPtr, infoPtr->selectedItem))
3970                         SelItem = infoPtr->selectedItem;
3971
3972                     while(SelItem && (SelItem != ht.hItem) && TREEVIEW_ValidItem(infoPtr, SelItem) && (SelItem != infoPtr->root))
3973                     {
3974                         TREEVIEW_Collapse(infoPtr, SelItem, FALSE, FALSE);
3975                         SelItem = SelItem->parent;
3976                     }
3977                 }
3978             }
3979
3980             /*
3981              * Expand the current item
3982              */
3983             TREEVIEW_Expand(infoPtr, ht.hItem, TVE_TOGGLE, FALSE);
3984         }
3985
3986         /* Select the current item */
3987         TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, ht.hItem, TVC_BYMOUSE);
3988     }
3989     else if (ht.flags & TVHT_ONITEMSTATEICON)
3990     {
3991         /* TVS_CHECKBOXES requires us to toggle the current state */
3992         if (infoPtr->dwStyle & TVS_CHECKBOXES)
3993             TREEVIEW_ToggleItemState(infoPtr, ht.hItem);
3994     }
3995
3996   setfocus:
3997     SetFocus(hwnd);
3998     return 0;
3999 }
4000
4001
4002 static LRESULT
4003 TREEVIEW_RButtonDown(TREEVIEW_INFO *infoPtr, LPARAM lParam)
4004 {
4005     TVHITTESTINFO ht;
4006
4007     if (infoPtr->hwndEdit)
4008     {
4009         SetFocus(infoPtr->hwnd);
4010         return 0;
4011     }
4012
4013     ht.pt.x = SLOWORD(lParam);
4014     ht.pt.y = SHIWORD(lParam);
4015
4016     TREEVIEW_HitTest(infoPtr, &ht);
4017
4018     if (TREEVIEW_TrackMouse(infoPtr, ht.pt))
4019     {
4020         if (ht.hItem)
4021         {
4022             TREEVIEW_SendTreeviewDnDNotify(infoPtr, TVN_BEGINRDRAGW, ht.hItem, ht.pt);
4023             infoPtr->dropItem = ht.hItem;
4024         }
4025     }
4026     else
4027     {
4028         SetFocus(infoPtr->hwnd);
4029         TREEVIEW_SendSimpleNotify(infoPtr, NM_RCLICK);
4030     }
4031
4032     return 0;
4033 }
4034
4035 static LRESULT
4036 TREEVIEW_RButtonUp(TREEVIEW_INFO *infoPtr, LPPOINT pPt)
4037 {
4038     return 0;
4039 }
4040
4041
4042 static LRESULT
4043 TREEVIEW_CreateDragImage(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
4044 {
4045     TREEVIEW_ITEM *dragItem = (HTREEITEM)lParam;
4046     INT cx, cy;
4047     HDC hdc, htopdc;
4048     HWND hwtop;
4049     HBITMAP hbmp, hOldbmp;
4050     SIZE size;
4051     RECT rc;
4052     HFONT hOldFont;
4053
4054     TRACE("\n");
4055
4056     if (!(infoPtr->himlNormal))
4057         return 0;
4058
4059     if (!dragItem || !TREEVIEW_ValidItem(infoPtr, dragItem))
4060         return 0;
4061
4062     TREEVIEW_UpdateDispInfo(infoPtr, dragItem, TVIF_TEXT);
4063
4064     hwtop = GetDesktopWindow();
4065     htopdc = GetDC(hwtop);
4066     hdc = CreateCompatibleDC(htopdc);
4067
4068     hOldFont = SelectObject(hdc, infoPtr->hFont);
4069     GetTextExtentPoint32A(hdc, dragItem->pszText, lstrlenA(dragItem->pszText),
4070                           &size);
4071     TRACE("%ld %ld %s %d\n", size.cx, size.cy, dragItem->pszText,
4072           lstrlenA(dragItem->pszText));
4073     hbmp = CreateCompatibleBitmap(htopdc, size.cx, size.cy);
4074     hOldbmp = SelectObject(hdc, hbmp);
4075
4076     ImageList_GetIconSize(infoPtr->himlNormal, &cx, &cy);
4077     size.cx += cx;
4078     if (cy > size.cy)
4079         size.cy = cy;
4080
4081     infoPtr->dragList = ImageList_Create(size.cx, size.cy, ILC_COLOR, 10, 10);
4082     ImageList_Draw(infoPtr->himlNormal, dragItem->iImage, hdc, 0, 0,
4083                    ILD_NORMAL);
4084
4085 /*
4086  ImageList_GetImageInfo (infoPtr->himlNormal, dragItem->hItem, &iminfo);
4087  ImageList_AddMasked (infoPtr->dragList, iminfo.hbmImage, CLR_DEFAULT);
4088 */
4089
4090 /* draw item text */
4091
4092     SetRect(&rc, cx, 0, size.cx, size.cy);
4093     DrawTextA(hdc, dragItem->pszText, lstrlenA(dragItem->pszText), &rc,
4094               DT_LEFT);
4095     SelectObject(hdc, hOldFont);
4096     SelectObject(hdc, hOldbmp);
4097
4098     ImageList_Add(infoPtr->dragList, hbmp, 0);
4099
4100     DeleteDC(hdc);
4101     DeleteObject(hbmp);
4102     ReleaseDC(hwtop, htopdc);
4103
4104     return (LRESULT)infoPtr->dragList;
4105 }
4106
4107 /* Selection ************************************************************/
4108
4109 static LRESULT
4110 TREEVIEW_DoSelectItem(TREEVIEW_INFO *infoPtr, INT action, HTREEITEM newSelect,
4111                       INT cause)
4112 {
4113     TREEVIEW_ITEM *prevSelect;
4114     RECT rcFocused;
4115
4116     assert(newSelect == NULL || TREEVIEW_ValidItem(infoPtr, newSelect));
4117
4118     TRACE("Entering item %p (%s), flag %x, cause %x, state %d\n",
4119           newSelect, TREEVIEW_ItemName(newSelect), action, cause,
4120           newSelect ? newSelect->state : 0);
4121
4122     /* reset and redraw focusedItem if focusedItem was set so we don't */
4123     /* have to worry about the previously focused item when we set a new one */
4124     if(infoPtr->focusedItem)
4125     {
4126         rcFocused = (infoPtr->focusedItem)->rect;
4127         infoPtr->focusedItem = 0;
4128         InvalidateRect(infoPtr->hwnd, &rcFocused, TRUE);
4129     }
4130
4131     switch (action)
4132     {
4133     case TVGN_CARET:
4134         prevSelect = infoPtr->selectedItem;
4135
4136         if (prevSelect == newSelect)
4137             return FALSE;
4138
4139         if (TREEVIEW_SendTreeviewNotify(infoPtr,
4140                                         TVN_SELCHANGINGW,
4141                                         cause,
4142                                         TVIF_HANDLE | TVIF_STATE | TVIF_PARAM,
4143                                         prevSelect,
4144                                         newSelect))
4145             return FALSE;
4146
4147         if (prevSelect)
4148             prevSelect->state &= ~TVIS_SELECTED;
4149         if (newSelect)
4150             newSelect->state |= TVIS_SELECTED;
4151
4152         infoPtr->selectedItem = newSelect;
4153
4154         TREEVIEW_EnsureVisible(infoPtr, infoPtr->selectedItem, FALSE);
4155
4156         TREEVIEW_SendTreeviewNotify(infoPtr,
4157                                     TVN_SELCHANGEDW,
4158                                     cause,
4159                                     TVIF_HANDLE | TVIF_STATE | TVIF_PARAM,
4160                                     prevSelect,
4161                                     newSelect);
4162         TREEVIEW_Invalidate(infoPtr, prevSelect);
4163         TREEVIEW_Invalidate(infoPtr, newSelect);
4164         break;
4165
4166     case TVGN_DROPHILITE:
4167         prevSelect = infoPtr->dropItem;
4168
4169         if (prevSelect)
4170             prevSelect->state &= ~TVIS_DROPHILITED;
4171
4172         infoPtr->dropItem = newSelect;
4173
4174         if (newSelect)
4175             newSelect->state |= TVIS_DROPHILITED;
4176
4177         TREEVIEW_Invalidate(infoPtr, prevSelect);
4178         TREEVIEW_Invalidate(infoPtr, newSelect);
4179         break;
4180
4181     case TVGN_FIRSTVISIBLE:
4182         TREEVIEW_EnsureVisible(infoPtr, newSelect, FALSE);
4183         TREEVIEW_SetFirstVisible(infoPtr, newSelect, TRUE);
4184         TREEVIEW_Invalidate(infoPtr, NULL);
4185         break;
4186     }
4187
4188     TRACE("Leaving state %d\n", newSelect ? newSelect->state : 0);
4189     return TRUE;
4190 }
4191
4192 /* FIXME: handle NM_KILLFOCUS etc */
4193 static LRESULT
4194 TREEVIEW_SelectItem(TREEVIEW_INFO *infoPtr, INT wParam, HTREEITEM item)
4195 {
4196     if (item != NULL && !TREEVIEW_ValidItem(infoPtr, item))
4197         return FALSE;
4198
4199     TRACE("%p (%s) %d\n", item, TREEVIEW_ItemName(item), wParam);
4200
4201     if (!TREEVIEW_DoSelectItem(infoPtr, wParam, item, TVC_UNKNOWN))
4202         return FALSE;
4203
4204     return TRUE;
4205 }
4206
4207 /*************************************************************************
4208  *              TREEVIEW_ProcessLetterKeys
4209  *
4210  *  Processes keyboard messages generated by pressing the letter keys
4211  *  on the keyboard.
4212  *  What this does is perform a case insensitive search from the
4213  *  current position with the following quirks:
4214  *  - If two chars or more are pressed in quick succession we search
4215  *    for the corresponding string (e.g. 'abc').
4216  *  - If there is a delay we wipe away the current search string and
4217  *    restart with just that char.
4218  *  - If the user keeps pressing the same character, whether slowly or
4219  *    fast, so that the search string is entirely composed of this
4220  *    character ('aaaaa' for instance), then we search for first item
4221  *    that starting with that character.
4222  *  - If the user types the above character in quick succession, then
4223  *    we must also search for the corresponding string ('aaaaa'), and
4224  *    go to that string if there is a match.
4225  *
4226  * RETURNS
4227  *
4228  *  Zero.
4229  *
4230  * BUGS
4231  *
4232  *  - The current implementation has a list of characters it will
4233  *    accept and it ignores averything else. In particular it will
4234  *    ignore accentuated characters which seems to match what
4235  *    Windows does. But I'm not sure it makes sense to follow
4236  *    Windows there.
4237  *  - We don't sound a beep when the search fails.
4238  *  - The search should start from the focused item, not from the selected
4239  *    item. One reason for this is to allow for multiple selections in trees.
4240  *    But currently infoPtr->focusedItem does not seem very usable.
4241  *
4242  * SEE ALSO
4243  *
4244  *  TREEVIEW_ProcessLetterKeys
4245  */
4246 static INT TREEVIEW_ProcessLetterKeys(
4247     HWND hwnd, /* handle to the window */
4248     WPARAM charCode, /* the character code, the actual character */
4249     LPARAM keyData /* key data */
4250     )
4251 {
4252     TREEVIEW_INFO *infoPtr;
4253     HTREEITEM nItem;
4254     HTREEITEM endidx,idx;
4255     TVITEMEXA item;
4256     CHAR buffer[MAX_PATH];
4257     DWORD timestamp,elapsed;
4258
4259     /* simple parameter checking */
4260     if (!hwnd || !charCode || !keyData)
4261         return 0;
4262
4263     infoPtr=(TREEVIEW_INFO*)GetWindowLongA(hwnd, 0);
4264     if (!infoPtr)
4265         return 0;
4266
4267     /* only allow the valid WM_CHARs through */
4268     if (!isalnum(charCode) &&
4269         charCode != '.' && charCode != '`' && charCode != '!' &&
4270         charCode != '@' && charCode != '#' && charCode != '$' &&
4271         charCode != '%' && charCode != '^' && charCode != '&' &&
4272         charCode != '*' && charCode != '(' && charCode != ')' &&
4273         charCode != '-' && charCode != '_' && charCode != '+' &&
4274         charCode != '=' && charCode != '\\'&& charCode != ']' &&
4275         charCode != '}' && charCode != '[' && charCode != '{' &&
4276         charCode != '/' && charCode != '?' && charCode != '>' &&
4277         charCode != '<' && charCode != ',' && charCode != '~')
4278         return 0;
4279
4280     /* compute how much time elapsed since last keypress */
4281     timestamp = GetTickCount();
4282     if (timestamp > infoPtr->lastKeyPressTimestamp) {
4283         elapsed=timestamp-infoPtr->lastKeyPressTimestamp;
4284     } else {
4285         elapsed=infoPtr->lastKeyPressTimestamp-timestamp;
4286     }
4287
4288     /* update the search parameters */
4289     infoPtr->lastKeyPressTimestamp=timestamp;
4290     if (elapsed < KEY_DELAY) {
4291         if (infoPtr->nSearchParamLength < sizeof(infoPtr->szSearchParam)) {
4292             infoPtr->szSearchParam[infoPtr->nSearchParamLength++]=charCode;
4293         }
4294         if (infoPtr->charCode != charCode) {
4295             infoPtr->charCode=charCode=0;
4296         }
4297     } else {
4298         infoPtr->charCode=charCode;
4299         infoPtr->szSearchParam[0]=charCode;
4300         infoPtr->nSearchParamLength=1;
4301         /* Redundant with the 1 char string */
4302         charCode=0;
4303     }
4304
4305     /* and search from the current position */
4306     nItem=NULL;
4307     if (infoPtr->selectedItem != NULL) {
4308         endidx=infoPtr->selectedItem;
4309         /* if looking for single character match,
4310          * then we must always move forward
4311          */
4312         if (infoPtr->nSearchParamLength == 1)
4313             idx=TREEVIEW_GetNextListItem(infoPtr,endidx);
4314         else
4315             idx=endidx;
4316     } else {
4317         endidx=NULL;
4318         idx=infoPtr->root->firstChild;
4319     }
4320     do {
4321         if (idx == NULL) {
4322             if (endidx == NULL)
4323                 break;
4324             idx=infoPtr->root->firstChild;
4325         }
4326
4327         /* get item */
4328         ZeroMemory(&item, sizeof(item));
4329         item.mask = TVIF_TEXT;
4330         item.hItem = idx;
4331         item.pszText = buffer;
4332         item.cchTextMax = sizeof(buffer);
4333         TREEVIEW_GetItemA( infoPtr, &item );
4334
4335         /* check for a match */
4336         if (strncasecmp(item.pszText,infoPtr->szSearchParam,infoPtr->nSearchParamLength) == 0) {
4337             nItem=idx;
4338             break;
4339         } else if ( (charCode != 0) && (nItem == NULL) &&
4340                     (nItem != infoPtr->selectedItem) &&
4341                     (strncasecmp(item.pszText,infoPtr->szSearchParam,1) == 0) ) {
4342             /* This would work but we must keep looking for a longer match */
4343             nItem=idx;
4344         }
4345         idx=TREEVIEW_GetNextListItem(infoPtr,idx);
4346     } while (idx != endidx);
4347
4348     if (nItem != NULL) {
4349         if (TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, nItem, TVC_BYKEYBOARD)) {
4350             TREEVIEW_EnsureVisible(infoPtr, nItem, FALSE);
4351         }
4352     }
4353
4354     return 0;
4355 }
4356
4357 /* Scrolling ************************************************************/
4358
4359 static LRESULT
4360 TREEVIEW_EnsureVisible(TREEVIEW_INFO *infoPtr, HTREEITEM item, BOOL bHScroll)
4361 {
4362     HTREEITEM newFirstVisible = NULL;
4363     int visible_pos;
4364
4365     if (!TREEVIEW_ValidItem(infoPtr, item))
4366         return FALSE;
4367
4368     if (!ISVISIBLE(item))
4369     {
4370         /* Expand parents as necessary. */
4371         HTREEITEM parent;
4372
4373         /* see if we are trying to ensure that root is vislble */
4374         if((item != infoPtr->root) && TREEVIEW_ValidItem(infoPtr, item))
4375           parent = item->parent;
4376         else
4377           parent = item; /* this item is the topmost item */
4378
4379         while (parent != infoPtr->root)
4380         {
4381             if (!(parent->state & TVIS_EXPANDED))
4382                 TREEVIEW_Expand(infoPtr, parent, FALSE, FALSE);
4383
4384             parent = parent->parent;
4385         }
4386     }
4387
4388     TRACE("%p (%s) %ld - %ld\n", item, TREEVIEW_ItemName(item), item->visibleOrder,
4389           infoPtr->firstVisible->visibleOrder);
4390
4391     visible_pos = item->visibleOrder - infoPtr->firstVisible->visibleOrder;
4392
4393     if (visible_pos < 0)
4394     {
4395         /* item is before the start of the list: put it at the top. */
4396         newFirstVisible = item;
4397     }
4398     else if (visible_pos >= TREEVIEW_GetVisibleCount(infoPtr)
4399              /* Sometimes, before we are displayed, GVC is 0, causing us to
4400               * spuriously scroll up. */
4401              && visible_pos > 0)
4402     {
4403         /* item is past the end of the list. */
4404         int scroll = visible_pos - TREEVIEW_GetVisibleCount(infoPtr);
4405
4406         newFirstVisible = TREEVIEW_GetListItem(infoPtr, infoPtr->firstVisible,
4407                                                scroll + 1);
4408     }
4409
4410     if (bHScroll)
4411     {
4412         /* Scroll window so item's text is visible as much as possible */
4413         /* Calculation of amount of extra space is taken from EditLabel code */
4414         INT pos, x;
4415         TEXTMETRICA textMetric;
4416         HDC hdc = GetWindowDC(infoPtr->hwnd);
4417
4418         x = item->textWidth;
4419
4420         GetTextMetricsA(hdc, &textMetric);
4421         ReleaseDC(infoPtr->hwnd, hdc);
4422
4423         x += (textMetric.tmMaxCharWidth * 2);
4424         x = max(x, textMetric.tmMaxCharWidth * 3);
4425
4426         if (item->textOffset < 0)
4427            pos = item->textOffset;
4428         else if (item->textOffset + x > infoPtr->clientWidth)
4429         {
4430            if (x > infoPtr->clientWidth)
4431               pos = item->textOffset;
4432            else
4433               pos = item->textOffset + x - infoPtr->clientWidth;
4434         }
4435         else
4436            pos = 0;
4437
4438         TREEVIEW_HScroll(infoPtr, MAKEWPARAM(SB_THUMBPOSITION, infoPtr->scrollX + pos));
4439     }
4440
4441     if (newFirstVisible != NULL && newFirstVisible != infoPtr->firstVisible)
4442     {
4443         TREEVIEW_SetFirstVisible(infoPtr, newFirstVisible, TRUE);
4444
4445         return TRUE;
4446     }
4447
4448     return FALSE;
4449 }
4450
4451 static VOID
4452 TREEVIEW_SetFirstVisible(TREEVIEW_INFO *infoPtr,
4453                          TREEVIEW_ITEM *newFirstVisible,
4454                          BOOL bUpdateScrollPos)
4455 {
4456     int gap_size;
4457
4458     TRACE("%p: %s\n", newFirstVisible, TREEVIEW_ItemName(newFirstVisible));
4459
4460     if (newFirstVisible != NULL)
4461     {
4462         /* Prevent an empty gap from appearing at the bottom... */
4463         gap_size = TREEVIEW_GetVisibleCount(infoPtr)
4464             - infoPtr->maxVisibleOrder + newFirstVisible->visibleOrder;
4465
4466         if (gap_size > 0)
4467         {
4468             newFirstVisible = TREEVIEW_GetListItem(infoPtr, newFirstVisible,
4469                                                    -gap_size);
4470
4471             /* ... unless we just don't have enough items. */
4472             if (newFirstVisible == NULL)
4473                 newFirstVisible = infoPtr->root->firstChild;
4474         }
4475     }
4476
4477     if (infoPtr->firstVisible != newFirstVisible)
4478     {
4479         if (infoPtr->firstVisible == NULL || newFirstVisible == NULL)
4480         {
4481             infoPtr->firstVisible = newFirstVisible;
4482             TREEVIEW_Invalidate(infoPtr, NULL);
4483         }
4484         else
4485         {
4486             TREEVIEW_ITEM *item;
4487             int scroll = infoPtr->uItemHeight *
4488                          (infoPtr->firstVisible->visibleOrder
4489                           - newFirstVisible->visibleOrder);
4490
4491             infoPtr->firstVisible = newFirstVisible;
4492
4493             for (item = infoPtr->root->firstChild; item != NULL;
4494                  item = TREEVIEW_GetNextListItem(infoPtr, item))
4495             {
4496                item->rect.top += scroll;
4497                item->rect.bottom += scroll;
4498             }
4499
4500             if (bUpdateScrollPos)
4501                 SetScrollPos(infoPtr->hwnd, SB_VERT,
4502                               newFirstVisible->visibleOrder, TRUE);
4503
4504             ScrollWindow(infoPtr->hwnd, 0, scroll, NULL, NULL);
4505             UpdateWindow(infoPtr->hwnd);
4506         }
4507     }
4508 }
4509
4510 /************************************************************************
4511  * VScroll is always in units of visible items. i.e. we always have a
4512  * visible item aligned to the top of the control. (Unless we have no
4513  * items at all.)
4514  */
4515 static LRESULT
4516 TREEVIEW_VScroll(TREEVIEW_INFO *infoPtr, WPARAM wParam)
4517 {
4518     TREEVIEW_ITEM *oldFirstVisible = infoPtr->firstVisible;
4519     TREEVIEW_ITEM *newFirstVisible = NULL;
4520
4521     int nScrollCode = LOWORD(wParam);
4522
4523     TRACE("wp %x\n", wParam);
4524
4525     if (!(infoPtr->uInternalStatus & TV_VSCROLL))
4526         return 0;
4527
4528     if (infoPtr->hwndEdit)
4529         SetFocus(infoPtr->hwnd);
4530
4531     if (!oldFirstVisible)
4532     {
4533         assert(infoPtr->root->firstChild == NULL);
4534         return 0;
4535     }
4536
4537     switch (nScrollCode)
4538     {
4539     case SB_TOP:
4540         newFirstVisible = infoPtr->root->firstChild;
4541         break;
4542
4543     case SB_BOTTOM:
4544         newFirstVisible = TREEVIEW_GetLastListItem(infoPtr, infoPtr->root);
4545         break;
4546
4547     case SB_LINEUP:
4548         newFirstVisible = TREEVIEW_GetPrevListItem(infoPtr, oldFirstVisible);
4549         break;
4550
4551     case SB_LINEDOWN:
4552         newFirstVisible = TREEVIEW_GetNextListItem(infoPtr, oldFirstVisible);
4553         break;
4554
4555     case SB_PAGEUP:
4556         newFirstVisible = TREEVIEW_GetListItem(infoPtr, oldFirstVisible,
4557                                                -max(1, TREEVIEW_GetVisibleCount(infoPtr)));
4558         break;
4559
4560     case SB_PAGEDOWN:
4561         newFirstVisible = TREEVIEW_GetListItem(infoPtr, oldFirstVisible,
4562                                                max(1, TREEVIEW_GetVisibleCount(infoPtr)));
4563         break;
4564
4565     case SB_THUMBTRACK:
4566     case SB_THUMBPOSITION:
4567         newFirstVisible = TREEVIEW_GetListItem(infoPtr,
4568                                                infoPtr->root->firstChild,
4569                                                (LONG)(SHORT)HIWORD(wParam));
4570         break;
4571
4572     case SB_ENDSCROLL:
4573         return 0;
4574     }
4575
4576     if (newFirstVisible != NULL)
4577     {
4578         if (newFirstVisible != oldFirstVisible)
4579             TREEVIEW_SetFirstVisible(infoPtr, newFirstVisible,
4580                                   nScrollCode != SB_THUMBTRACK);
4581         else if (nScrollCode == SB_THUMBPOSITION)
4582             SetScrollPos(infoPtr->hwnd, SB_VERT,
4583                          newFirstVisible->visibleOrder, TRUE);
4584     }
4585
4586     return 0;
4587 }
4588
4589 static LRESULT
4590 TREEVIEW_HScroll(TREEVIEW_INFO *infoPtr, WPARAM wParam)
4591 {
4592     int maxWidth;
4593     int scrollX = infoPtr->scrollX;
4594     int nScrollCode = LOWORD(wParam);
4595
4596     TRACE("wp %x\n", wParam);
4597
4598     if (!(infoPtr->uInternalStatus & TV_HSCROLL))
4599         return FALSE;
4600
4601     if (infoPtr->hwndEdit)
4602         SetFocus(infoPtr->hwnd);
4603
4604     maxWidth = infoPtr->treeWidth - infoPtr->clientWidth;
4605     /* shall never occur */
4606     if (maxWidth <= 0)
4607     {
4608        scrollX = 0;
4609        goto scroll;
4610     }
4611
4612     switch (nScrollCode)
4613     {
4614     case SB_LINELEFT:
4615         scrollX -= infoPtr->uItemHeight;
4616         break;
4617     case SB_LINERIGHT:
4618         scrollX += infoPtr->uItemHeight;
4619         break;
4620     case SB_PAGELEFT:
4621         scrollX -= infoPtr->clientWidth;
4622         break;
4623     case SB_PAGERIGHT:
4624         scrollX += infoPtr->clientWidth;
4625         break;
4626
4627     case SB_THUMBTRACK:
4628     case SB_THUMBPOSITION:
4629         scrollX = (int)(SHORT)HIWORD(wParam);
4630         break;
4631
4632     case SB_ENDSCROLL:
4633        return 0;
4634     }
4635
4636     if (scrollX > maxWidth)
4637         scrollX = maxWidth;
4638     else if (scrollX < 0)
4639         scrollX = 0;
4640
4641 scroll:
4642     if (scrollX != infoPtr->scrollX)
4643     {
4644         TREEVIEW_ITEM *item;
4645         LONG scroll_pixels = infoPtr->scrollX - scrollX;
4646
4647         for (item = infoPtr->root->firstChild; item != NULL;
4648              item = TREEVIEW_GetNextListItem(infoPtr, item))
4649         {
4650            item->linesOffset += scroll_pixels;
4651            item->stateOffset += scroll_pixels;
4652            item->imageOffset += scroll_pixels;
4653            item->textOffset  += scroll_pixels;
4654         }
4655
4656         ScrollWindow(infoPtr->hwnd, scroll_pixels, 0, NULL, NULL);
4657         infoPtr->scrollX = scrollX;
4658         UpdateWindow(infoPtr->hwnd);
4659     }
4660
4661     if (nScrollCode != SB_THUMBTRACK)
4662        SetScrollPos(infoPtr->hwnd, SB_HORZ, scrollX, TRUE);
4663
4664     return 0;
4665 }
4666
4667 static LRESULT
4668 TREEVIEW_MouseWheel(TREEVIEW_INFO *infoPtr, WPARAM wParam)
4669 {
4670     short gcWheelDelta;
4671     UINT pulScrollLines = 3;
4672
4673     if (infoPtr->firstVisible == NULL)
4674         return TRUE;
4675
4676     SystemParametersInfoW(SPI_GETWHEELSCROLLLINES, 0, &pulScrollLines, 0);
4677
4678     gcWheelDelta = -(short)HIWORD(wParam);
4679     pulScrollLines *= (gcWheelDelta / WHEEL_DELTA);
4680
4681     if (abs(gcWheelDelta) >= WHEEL_DELTA && pulScrollLines)
4682     {
4683         int newDy = infoPtr->firstVisible->visibleOrder + pulScrollLines;
4684         int maxDy = infoPtr->maxVisibleOrder;
4685
4686         if (newDy > maxDy)
4687             newDy = maxDy;
4688
4689         if (newDy < 0)
4690             newDy = 0;
4691
4692         TREEVIEW_VScroll(infoPtr, MAKEWPARAM(SB_THUMBPOSITION, newDy));
4693     }
4694     return TRUE;
4695 }
4696
4697 /* Create/Destroy *******************************************************/
4698
4699 static LRESULT
4700 TREEVIEW_Create(HWND hwnd)
4701 {
4702     RECT rcClient;
4703     TREEVIEW_INFO *infoPtr;
4704
4705     TRACE("wnd %p, style %lx\n", hwnd, GetWindowLongA(hwnd, GWL_STYLE));
4706
4707     infoPtr = (TREEVIEW_INFO *)COMCTL32_Alloc(sizeof(TREEVIEW_INFO));
4708
4709     if (infoPtr == NULL)
4710     {
4711         ERR("could not allocate info memory!\n");
4712         return 0;
4713     }
4714
4715     SetWindowLongA(hwnd, 0, (DWORD)infoPtr);
4716
4717     infoPtr->hwnd = hwnd;
4718     infoPtr->dwStyle = GetWindowLongA(hwnd, GWL_STYLE);
4719     infoPtr->uInternalStatus = 0;
4720     infoPtr->Timer = 0;
4721     infoPtr->uNumItems = 0;
4722     infoPtr->cdmode = 0;
4723     infoPtr->uScrollTime = 300; /* milliseconds */
4724     infoPtr->bRedraw = TRUE;
4725
4726     GetClientRect(hwnd, &rcClient);
4727
4728     /* No scroll bars yet. */
4729     infoPtr->clientWidth = rcClient.right;
4730     infoPtr->clientHeight = rcClient.bottom;
4731
4732     infoPtr->treeWidth = 0;
4733     infoPtr->treeHeight = 0;
4734
4735     infoPtr->uIndent = 19;
4736     infoPtr->selectedItem = 0;
4737     infoPtr->focusedItem = 0;
4738     /* hotItem? */
4739     infoPtr->firstVisible = 0;
4740     infoPtr->maxVisibleOrder = 0;
4741     infoPtr->dropItem = 0;
4742     infoPtr->insertMarkItem = 0;
4743     infoPtr->insertBeforeorAfter = 0;
4744     /* dragList */
4745
4746     infoPtr->scrollX = 0;
4747
4748     infoPtr->clrBk = GetSysColor(COLOR_WINDOW);
4749     infoPtr->clrText = -1;      /* use system color */
4750     infoPtr->clrLine = RGB(128, 128, 128);
4751     infoPtr->clrInsertMark = GetSysColor(COLOR_BTNTEXT);
4752
4753     /* hwndToolTip */
4754
4755     infoPtr->hwndEdit = 0;
4756     infoPtr->wpEditOrig = NULL;
4757     infoPtr->bIgnoreEditKillFocus = FALSE;
4758     infoPtr->bLabelChanged = FALSE;
4759
4760     infoPtr->himlNormal = NULL;
4761     infoPtr->himlState = NULL;
4762     infoPtr->normalImageWidth = 0;
4763     infoPtr->normalImageHeight = 0;
4764     infoPtr->stateImageWidth = 0;
4765     infoPtr->stateImageHeight = 0;
4766
4767     infoPtr->items = DPA_Create(16);
4768
4769     infoPtr->hFont = GetStockObject(DEFAULT_GUI_FONT);
4770     infoPtr->hBoldFont = TREEVIEW_CreateBoldFont(infoPtr->hFont);
4771
4772     infoPtr->uItemHeight = TREEVIEW_NaturalHeight(infoPtr);
4773
4774     infoPtr->root = TREEVIEW_AllocateItem(infoPtr);
4775     infoPtr->root->state = TVIS_EXPANDED;
4776     infoPtr->root->iLevel = -1;
4777     infoPtr->root->visibleOrder = -1;
4778
4779     infoPtr->hwndNotify = GetParent(hwnd);
4780 #if 0
4781     infoPtr->bTransparent = ( GetWindowLongA( hwnd, GWL_STYLE) & TBSTYLE_FLAT);
4782 #endif
4783
4784     infoPtr->hwndToolTip = 0;
4785
4786     infoPtr->bUnicode = IsWindowUnicode (hwnd);
4787
4788     /* Determine what type of notify should be issued */
4789     /* sets infoPtr->bNtfUnicode */
4790     TREEVIEW_NotifyFormat(infoPtr, infoPtr->hwndNotify, NF_REQUERY);
4791
4792     if (!(infoPtr->dwStyle & TVS_NOTOOLTIPS))
4793         infoPtr->hwndToolTip = COMCTL32_CreateToolTip(hwnd);
4794
4795     if (infoPtr->dwStyle & TVS_CHECKBOXES)
4796     {
4797         RECT rc;
4798         HBITMAP hbm, hbmOld;
4799         HDC hdc;
4800         int nIndex;
4801
4802         infoPtr->himlState =
4803             ImageList_Create(16, 16, ILC_COLOR | ILC_MASK, 3, 0);
4804
4805         hdc = CreateCompatibleDC(0);
4806         hbm = CreateCompatibleBitmap(hdc, 48, 16);
4807         hbmOld = SelectObject(hdc, hbm);
4808
4809         rc.left  = 0;   rc.top    = 0;
4810         rc.right = 48;  rc.bottom = 16;
4811         FillRect(hdc, &rc, (HBRUSH)(COLOR_WINDOW+1));
4812
4813         rc.left  = 18;   rc.top    = 2;
4814         rc.right = 30;   rc.bottom = 14;
4815         DrawFrameControl(hdc, &rc, DFC_BUTTON,
4816                           DFCS_BUTTONCHECK|DFCS_FLAT);
4817
4818         rc.left  = 34;   rc.right  = 46;
4819         DrawFrameControl(hdc, &rc, DFC_BUTTON,
4820                           DFCS_BUTTONCHECK|DFCS_FLAT|DFCS_CHECKED);
4821
4822         nIndex = ImageList_AddMasked(infoPtr->himlState, hbm,
4823                                       GetSysColor(COLOR_WINDOW));
4824         TRACE("chckbox index %d\n", nIndex);
4825         SelectObject(hdc, hbmOld);
4826         DeleteObject(hbm);
4827         DeleteDC(hdc);
4828
4829         infoPtr->stateImageWidth = 16;
4830         infoPtr->stateImageHeight = 16;
4831     }
4832     return 0;
4833 }
4834
4835
4836 static LRESULT
4837 TREEVIEW_Destroy(TREEVIEW_INFO *infoPtr)
4838 {
4839     TRACE("\n");
4840
4841     TREEVIEW_RemoveTree(infoPtr);
4842
4843     /* tool tip is automatically destroyed: we are its owner */
4844
4845     /* Restore original wndproc */
4846     if (infoPtr->hwndEdit)
4847         SetWindowLongA(infoPtr->hwndEdit, GWL_WNDPROC,
4848                        (LONG)infoPtr->wpEditOrig);
4849
4850     /* Deassociate treeview from the window before doing anything drastic. */
4851     SetWindowLongA(infoPtr->hwnd, 0, (LONG)NULL);
4852
4853     DeleteObject(infoPtr->hBoldFont);
4854     COMCTL32_Free(infoPtr);
4855
4856     return 0;
4857 }
4858
4859 /* Miscellaneous Messages ***********************************************/
4860
4861 static LRESULT
4862 TREEVIEW_ScrollKeyDown(TREEVIEW_INFO *infoPtr, WPARAM key)
4863 {
4864     static const struct
4865     {
4866         unsigned char code;
4867     }
4868     scroll[] =
4869     {
4870 #define SCROLL_ENTRY(dir, code) { ((dir) << 7) | (code) }
4871         SCROLL_ENTRY(SB_VERT, SB_PAGEUP),       /* VK_PRIOR */
4872         SCROLL_ENTRY(SB_VERT, SB_PAGEDOWN),     /* VK_NEXT */
4873         SCROLL_ENTRY(SB_VERT, SB_BOTTOM),       /* VK_END */
4874         SCROLL_ENTRY(SB_VERT, SB_TOP),          /* VK_HOME */
4875         SCROLL_ENTRY(SB_HORZ, SB_LINEUP),       /* VK_LEFT */
4876         SCROLL_ENTRY(SB_VERT, SB_LINEUP),       /* VK_UP */
4877         SCROLL_ENTRY(SB_HORZ, SB_LINEDOWN),     /* VK_RIGHT */
4878         SCROLL_ENTRY(SB_VERT, SB_LINEDOWN)      /* VK_DOWN */
4879 #undef SCROLL_ENTRY
4880     };
4881
4882     if (key >= VK_PRIOR && key <= VK_DOWN)
4883     {
4884         unsigned char code = scroll[key - VK_PRIOR].code;
4885
4886         (((code & (1 << 7)) == (SB_HORZ << 7))
4887          ? TREEVIEW_HScroll
4888          : TREEVIEW_VScroll)(infoPtr, code & 0x7F);
4889     }
4890
4891     return 0;
4892 }
4893
4894 /************************************************************************
4895  *        TREEVIEW_KeyDown
4896  *
4897  * VK_UP       Move selection to the previous non-hidden item.
4898  * VK_DOWN     Move selection to the next non-hidden item.
4899  * VK_HOME     Move selection to the first item.
4900  * VK_END      Move selection to the last item.
4901  * VK_LEFT     If expanded then collapse, otherwise move to parent.
4902  * VK_RIGHT    If collapsed then expand, otherwise move to first child.
4903  * VK_ADD      Expand.
4904  * VK_SUBTRACT Collapse.
4905  * VK_MULTIPLY Expand all.
4906  * VK_PRIOR    Move up GetVisibleCount items.
4907  * VK_NEXT     Move down GetVisibleCount items.
4908  * VK_BACK     Move to parent.
4909  * CTRL-Left,Right,Up,Down,PgUp,PgDown,Home,End: Scroll without changing selection
4910  */
4911 static LRESULT
4912 TREEVIEW_KeyDown(TREEVIEW_INFO *infoPtr, WPARAM wParam)
4913 {
4914     /* If it is non-NULL and different, it will be selected and visible. */
4915     TREEVIEW_ITEM *newSelection = NULL;
4916
4917     TREEVIEW_ITEM *prevItem = infoPtr->selectedItem;
4918
4919     TRACE("%x\n", wParam);
4920
4921     if (prevItem == NULL)
4922         return FALSE;
4923
4924     if (GetAsyncKeyState(VK_CONTROL) & 0x8000)
4925         return TREEVIEW_ScrollKeyDown(infoPtr, wParam);
4926
4927     switch (wParam)
4928     {
4929     case VK_UP:
4930         newSelection = TREEVIEW_GetPrevListItem(infoPtr, prevItem);
4931         if (!newSelection)
4932             newSelection = infoPtr->root->firstChild;
4933         break;
4934
4935     case VK_DOWN:
4936         newSelection = TREEVIEW_GetNextListItem(infoPtr, prevItem);
4937         break;
4938
4939     case VK_HOME:
4940         newSelection = infoPtr->root->firstChild;
4941         break;
4942
4943     case VK_END:
4944         newSelection = TREEVIEW_GetLastListItem(infoPtr, infoPtr->root);
4945         break;
4946
4947     case VK_LEFT:
4948         if (prevItem->state & TVIS_EXPANDED)
4949         {
4950             TREEVIEW_Collapse(infoPtr, prevItem, FALSE, TRUE);
4951         }
4952         else if (prevItem->parent != infoPtr->root)
4953         {
4954             newSelection = prevItem->parent;
4955         }
4956         break;
4957
4958     case VK_RIGHT:
4959         if (TREEVIEW_HasChildren(infoPtr, prevItem))
4960         {
4961             if (!(prevItem->state & TVIS_EXPANDED))
4962                 TREEVIEW_Expand(infoPtr, prevItem, FALSE, TRUE);
4963             else
4964             {
4965                 newSelection = prevItem->firstChild;
4966             }
4967         }
4968
4969         break;
4970
4971     case VK_MULTIPLY:
4972         TREEVIEW_ExpandAll(infoPtr, prevItem);
4973         break;
4974
4975     case VK_ADD:
4976         if (!(prevItem->state & TVIS_EXPANDED))
4977             TREEVIEW_Expand(infoPtr, prevItem, FALSE, TRUE);
4978         break;
4979
4980     case VK_SUBTRACT:
4981         if (prevItem->state & TVIS_EXPANDED)
4982             TREEVIEW_Collapse(infoPtr, prevItem, FALSE, TRUE);
4983         break;
4984
4985     case VK_PRIOR:
4986         newSelection
4987             = TREEVIEW_GetListItem(infoPtr, prevItem,
4988                                    -TREEVIEW_GetVisibleCount(infoPtr));
4989         break;
4990
4991     case VK_NEXT:
4992         newSelection
4993             = TREEVIEW_GetListItem(infoPtr, prevItem,
4994                                    TREEVIEW_GetVisibleCount(infoPtr));
4995         break;
4996
4997     case VK_BACK:
4998         newSelection = prevItem->parent;
4999         if (newSelection == infoPtr->root)
5000             newSelection = NULL;
5001         break;
5002
5003     case VK_SPACE:
5004         if (infoPtr->dwStyle & TVS_CHECKBOXES)
5005             TREEVIEW_ToggleItemState(infoPtr, prevItem);
5006         break;
5007     }
5008
5009     if (newSelection && newSelection != prevItem)
5010     {
5011         if (TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, newSelection,
5012                                   TVC_BYKEYBOARD))
5013         {
5014             TREEVIEW_EnsureVisible(infoPtr, newSelection, FALSE);
5015         }
5016     }
5017
5018     return FALSE;
5019 }
5020
5021 static LRESULT
5022 TREEVIEW_Notify(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
5023 {
5024     LPNMHDR lpnmh = (LPNMHDR)lParam;
5025
5026     if (lpnmh->code == PGN_CALCSIZE) {
5027         LPNMPGCALCSIZE lppgc = (LPNMPGCALCSIZE)lParam;
5028
5029         if (lppgc->dwFlag == PGF_CALCWIDTH) {
5030             lppgc->iWidth = infoPtr->treeWidth;
5031             TRACE("got PGN_CALCSIZE, returning horz size = %ld, client=%ld\n",
5032                   infoPtr->treeWidth, infoPtr->clientWidth);
5033         }
5034         else {
5035             lppgc->iHeight = infoPtr->treeHeight;
5036             TRACE("got PGN_CALCSIZE, returning vert size = %ld, client=%ld\n",
5037                   infoPtr->treeHeight, infoPtr->clientHeight);
5038         }
5039         return 0;
5040     }
5041     return DefWindowProcA(infoPtr->hwnd, WM_NOTIFY, wParam, lParam);
5042 }
5043
5044 static INT TREEVIEW_NotifyFormat (TREEVIEW_INFO *infoPtr, HWND hwndFrom, UINT nCommand)
5045 {
5046     INT format;
5047
5048     TRACE("(hwndFrom=%p, nCommand=%d)\n", hwndFrom, nCommand);
5049
5050     if (nCommand != NF_REQUERY) return 0;
5051
5052     format = SendMessageW(hwndFrom, WM_NOTIFYFORMAT, (WPARAM)infoPtr->hwnd, NF_QUERY);
5053     TRACE("format=%d\n", format);
5054
5055     if (format != NFR_ANSI && format != NFR_UNICODE) return 0;
5056
5057     infoPtr->bNtfUnicode = (format == NFR_UNICODE);
5058
5059     return format;
5060 }
5061
5062 static LRESULT
5063 TREEVIEW_Size(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
5064 {
5065     if (wParam == SIZE_RESTORED)
5066     {
5067         infoPtr->clientWidth  = SLOWORD(lParam);
5068         infoPtr->clientHeight = SHIWORD(lParam);
5069
5070         TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
5071         TREEVIEW_SetFirstVisible(infoPtr, infoPtr->firstVisible, TRUE);
5072         TREEVIEW_UpdateScrollBars(infoPtr);
5073     }
5074     else
5075     {
5076         FIXME("WM_SIZE flag %x %lx not handled\n", wParam, lParam);
5077     }
5078
5079     TREEVIEW_Invalidate(infoPtr, NULL);
5080     return 0;
5081 }
5082
5083 static LRESULT
5084 TREEVIEW_StyleChanged(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
5085 {
5086     TRACE("(%x %lx)\n", wParam, lParam);
5087
5088     if (wParam == GWL_STYLE)
5089     {
5090        DWORD dwNewStyle = ((LPSTYLESTRUCT)lParam)->styleNew;
5091
5092        /* we have to take special care about tooltips */
5093        if ((infoPtr->dwStyle ^ dwNewStyle) & TVS_NOTOOLTIPS)
5094        {
5095           if (infoPtr->dwStyle & TVS_NOTOOLTIPS)
5096           {
5097               infoPtr->hwndToolTip = COMCTL32_CreateToolTip(infoPtr->hwnd);
5098               TRACE("\n");
5099           }
5100           else
5101           {
5102              DestroyWindow(infoPtr->hwndToolTip);
5103              infoPtr->hwndToolTip = 0;
5104           }
5105        }
5106
5107        infoPtr->dwStyle = dwNewStyle;
5108     }
5109
5110     TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
5111     TREEVIEW_UpdateScrollBars(infoPtr);
5112     TREEVIEW_Invalidate(infoPtr, NULL);
5113
5114     return 0;
5115 }
5116
5117 static LRESULT
5118 TREEVIEW_SetFocus(TREEVIEW_INFO *infoPtr)
5119 {
5120     TRACE("\n");
5121
5122     if (!infoPtr->selectedItem)
5123     {
5124         TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, infoPtr->firstVisible,
5125                               TVC_UNKNOWN);
5126     }
5127
5128     TREEVIEW_SendSimpleNotify(infoPtr, NM_SETFOCUS);
5129     TREEVIEW_Invalidate(infoPtr, infoPtr->selectedItem);
5130     return 0;
5131 }
5132
5133 static LRESULT
5134 TREEVIEW_KillFocus(TREEVIEW_INFO *infoPtr)
5135 {
5136     TRACE("\n");
5137
5138     TREEVIEW_SendSimpleNotify(infoPtr, NM_KILLFOCUS);
5139     TREEVIEW_Invalidate(infoPtr, infoPtr->selectedItem);
5140     return 0;
5141 }
5142
5143
5144 static LRESULT WINAPI
5145 TREEVIEW_WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
5146 {
5147     TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
5148     if (infoPtr) TREEVIEW_VerifyTree(infoPtr);
5149     else
5150     {
5151         if (uMsg == WM_CREATE)
5152             TREEVIEW_Create(hwnd);
5153         else
5154             goto def;
5155     }
5156
5157     switch (uMsg)
5158     {
5159     case TVM_CREATEDRAGIMAGE:
5160         return TREEVIEW_CreateDragImage(infoPtr, wParam, lParam);
5161
5162     case TVM_DELETEITEM:
5163         return TREEVIEW_DeleteItem(infoPtr, (HTREEITEM)lParam);
5164
5165     case TVM_EDITLABELA:
5166         return (LRESULT)TREEVIEW_EditLabelA(infoPtr, (HTREEITEM)lParam);
5167
5168     case TVM_EDITLABELW:
5169         FIXME("Unimplemented msg TVM_EDITLABELW\n");
5170         return 0;
5171
5172     case TVM_ENDEDITLABELNOW:
5173         return TREEVIEW_EndEditLabelNow(infoPtr, (BOOL)wParam);
5174
5175     case TVM_ENSUREVISIBLE:
5176         return TREEVIEW_EnsureVisible(infoPtr, (HTREEITEM)lParam, TRUE);
5177
5178     case TVM_EXPAND:
5179         return TREEVIEW_ExpandMsg(infoPtr, (UINT)wParam, (HTREEITEM)lParam);
5180
5181     case TVM_GETBKCOLOR:
5182         return TREEVIEW_GetBkColor(infoPtr);
5183
5184     case TVM_GETCOUNT:
5185         return TREEVIEW_GetCount(infoPtr);
5186
5187     case TVM_GETEDITCONTROL:
5188         return TREEVIEW_GetEditControl(infoPtr);
5189
5190     case TVM_GETIMAGELIST:
5191         return TREEVIEW_GetImageList(infoPtr, wParam);
5192
5193     case TVM_GETINDENT:
5194         return TREEVIEW_GetIndent(infoPtr);
5195
5196     case TVM_GETINSERTMARKCOLOR:
5197         return TREEVIEW_GetInsertMarkColor(infoPtr);
5198
5199     case TVM_GETISEARCHSTRINGA:
5200         FIXME("Unimplemented msg TVM_GETISEARCHSTRINGA\n");
5201         return 0;
5202
5203     case TVM_GETISEARCHSTRINGW:
5204         FIXME("Unimplemented msg TVM_GETISEARCHSTRINGW\n");
5205         return 0;
5206
5207     case TVM_GETITEMA:
5208         return TREEVIEW_GetItemA(infoPtr, (LPTVITEMEXA)lParam);
5209
5210     case TVM_GETITEMW:
5211         return TREEVIEW_GetItemW(infoPtr, (LPTVITEMEXW)lParam);
5212
5213     case TVM_GETITEMHEIGHT:
5214         return TREEVIEW_GetItemHeight(infoPtr);
5215
5216     case TVM_GETITEMRECT:
5217         return TREEVIEW_GetItemRect(infoPtr, (BOOL)wParam, (LPRECT)lParam);
5218
5219     case TVM_GETITEMSTATE:
5220         return TREEVIEW_GetItemState(infoPtr, (HTREEITEM)wParam, (UINT)lParam);
5221
5222     case TVM_GETLINECOLOR:
5223         return TREEVIEW_GetLineColor(infoPtr);
5224
5225     case TVM_GETNEXTITEM:
5226         return TREEVIEW_GetNextItem(infoPtr, (UINT)wParam, (HTREEITEM)lParam);
5227
5228     case TVM_GETSCROLLTIME:
5229         return TREEVIEW_GetScrollTime(infoPtr);
5230
5231     case TVM_GETTEXTCOLOR:
5232         return TREEVIEW_GetTextColor(infoPtr);
5233
5234     case TVM_GETTOOLTIPS:
5235         return TREEVIEW_GetToolTips(infoPtr);
5236
5237     case TVM_GETUNICODEFORMAT:
5238         FIXME("Unimplemented msg TVM_GETUNICODEFORMAT\n");
5239         return 0;
5240
5241     case TVM_GETVISIBLECOUNT:
5242         return TREEVIEW_GetVisibleCount(infoPtr);
5243
5244     case TVM_HITTEST:
5245         return TREEVIEW_HitTest(infoPtr, (LPTVHITTESTINFO)lParam);
5246
5247     case TVM_INSERTITEMA:
5248         return TREEVIEW_InsertItemA(infoPtr, lParam);
5249
5250     case TVM_INSERTITEMW:
5251         return TREEVIEW_InsertItemW(infoPtr, lParam);
5252
5253     case TVM_SELECTITEM:
5254         return TREEVIEW_SelectItem(infoPtr, (INT)wParam, (HTREEITEM)lParam);
5255
5256     case TVM_SETBKCOLOR:
5257         return TREEVIEW_SetBkColor(infoPtr, (COLORREF)lParam);
5258
5259     case TVM_SETIMAGELIST:
5260         return TREEVIEW_SetImageList(infoPtr, wParam, (HIMAGELIST)lParam);
5261
5262     case TVM_SETINDENT:
5263         return TREEVIEW_SetIndent(infoPtr, (UINT)wParam);
5264
5265     case TVM_SETINSERTMARK:
5266         return TREEVIEW_SetInsertMark(infoPtr, (BOOL)wParam, (HTREEITEM)lParam);
5267
5268     case TVM_SETINSERTMARKCOLOR:
5269         return TREEVIEW_SetInsertMarkColor(infoPtr, (COLORREF)lParam);
5270
5271     case TVM_SETITEMA:
5272         return TREEVIEW_SetItemA(infoPtr, (LPTVITEMEXA)lParam);
5273
5274     case TVM_SETITEMW:
5275     return TREEVIEW_SetItemW(infoPtr, (LPTVITEMEXW)lParam);
5276         return 0;
5277
5278     case TVM_SETLINECOLOR:
5279         return TREEVIEW_SetLineColor(infoPtr, (COLORREF)lParam);
5280
5281     case TVM_SETITEMHEIGHT:
5282         return TREEVIEW_SetItemHeight(infoPtr, (INT)(SHORT)wParam);
5283
5284     case TVM_SETSCROLLTIME:
5285         return TREEVIEW_SetScrollTime(infoPtr, (UINT)wParam);
5286
5287     case TVM_SETTEXTCOLOR:
5288         return TREEVIEW_SetTextColor(infoPtr, (COLORREF)lParam);
5289
5290     case TVM_SETTOOLTIPS:
5291         return TREEVIEW_SetToolTips(infoPtr, (HWND)wParam);
5292
5293     case TVM_SETUNICODEFORMAT:
5294         FIXME("Unimplemented msg TVM_SETUNICODEFORMAT\n");
5295         return 0;
5296
5297     case TVM_SORTCHILDREN:
5298         return TREEVIEW_SortChildren(infoPtr, wParam, lParam);
5299
5300     case TVM_SORTCHILDRENCB:
5301         return TREEVIEW_SortChildrenCB(infoPtr, wParam, (LPTVSORTCB)lParam);
5302
5303     case WM_CHAR:
5304         return TREEVIEW_ProcessLetterKeys( hwnd, wParam, lParam );
5305
5306     case WM_COMMAND:
5307         return TREEVIEW_Command(infoPtr, wParam, lParam);
5308
5309     case WM_DESTROY:
5310         return TREEVIEW_Destroy(infoPtr);
5311
5312         /* WM_ENABLE */
5313
5314     case WM_ERASEBKGND:
5315         return TREEVIEW_EraseBackground(infoPtr, (HDC)wParam);
5316
5317     case WM_GETDLGCODE:
5318         return DLGC_WANTARROWS | DLGC_WANTCHARS;
5319
5320     case WM_GETFONT:
5321         return TREEVIEW_GetFont(infoPtr);
5322
5323     case WM_HSCROLL:
5324         return TREEVIEW_HScroll(infoPtr, wParam);
5325
5326     case WM_KEYDOWN:
5327         return TREEVIEW_KeyDown(infoPtr, wParam);
5328
5329     case WM_KILLFOCUS:
5330         return TREEVIEW_KillFocus(infoPtr);
5331
5332     case WM_LBUTTONDBLCLK:
5333         return TREEVIEW_LButtonDoubleClick(infoPtr, lParam);
5334
5335     case WM_LBUTTONDOWN:
5336         return TREEVIEW_LButtonDown(infoPtr, lParam);
5337
5338         /* WM_MBUTTONDOWN */
5339
5340         /* WM_MOUSEMOVE */
5341
5342     case WM_NOTIFY:
5343         return TREEVIEW_Notify(infoPtr, wParam, lParam);
5344
5345     case WM_NOTIFYFORMAT:
5346         return TREEVIEW_NotifyFormat(infoPtr, (HWND)wParam, (UINT)lParam);
5347
5348     case WM_PAINT:
5349         return TREEVIEW_Paint(infoPtr, wParam);
5350
5351         /* WM_PRINTCLIENT */
5352
5353     case WM_RBUTTONDOWN:
5354         return TREEVIEW_RButtonDown(infoPtr, lParam);
5355
5356     case WM_SETFOCUS:
5357         return TREEVIEW_SetFocus(infoPtr);
5358
5359     case WM_SETFONT:
5360         return TREEVIEW_SetFont(infoPtr, (HFONT)wParam, (BOOL)lParam);
5361
5362     case WM_SETREDRAW:
5363         return TREEVIEW_SetRedraw(infoPtr, wParam, lParam);
5364
5365     case WM_SIZE:
5366         return TREEVIEW_Size(infoPtr, wParam, lParam);
5367
5368     case WM_STYLECHANGED:
5369         return TREEVIEW_StyleChanged(infoPtr, wParam, lParam);
5370
5371         /* WM_SYSCOLORCHANGE */
5372
5373         /* WM_SYSKEYDOWN */
5374
5375     case WM_TIMER:
5376         return TREEVIEW_HandleTimer(infoPtr, wParam);
5377
5378     case WM_VSCROLL:
5379         return TREEVIEW_VScroll(infoPtr, wParam);
5380
5381         /* WM_WININICHANGE */
5382
5383     case WM_MOUSEWHEEL:
5384         if (wParam & (MK_SHIFT | MK_CONTROL))
5385             goto def;
5386         return TREEVIEW_MouseWheel(infoPtr, wParam);
5387
5388     case WM_DRAWITEM:
5389         TRACE("drawItem\n");
5390         goto def;
5391
5392     default:
5393         /* This mostly catches MFC and Delphi messages. :( */
5394         if ((uMsg >= WM_USER) && (uMsg < WM_APP))
5395             TRACE("Unknown msg %04x wp=%08x lp=%08lx\n", uMsg, wParam, lParam);
5396 def:
5397         return DefWindowProcA(hwnd, uMsg, wParam, lParam);
5398     }
5399     return 0;
5400 }
5401
5402
5403 /* Class Registration ***************************************************/
5404
5405 VOID
5406 TREEVIEW_Register(void)
5407 {
5408     WNDCLASSA wndClass;
5409
5410     TRACE("\n");
5411
5412     ZeroMemory(&wndClass, sizeof(WNDCLASSA));
5413     wndClass.style = CS_GLOBALCLASS | CS_DBLCLKS;
5414     wndClass.lpfnWndProc = (WNDPROC)TREEVIEW_WindowProc;
5415     wndClass.cbClsExtra = 0;
5416     wndClass.cbWndExtra = sizeof(TREEVIEW_INFO *);
5417
5418     wndClass.hCursor = LoadCursorA(0, IDC_ARROWA);
5419     wndClass.hbrBackground = 0;
5420     wndClass.lpszClassName = WC_TREEVIEWA;
5421
5422     RegisterClassA(&wndClass);
5423 }
5424
5425
5426 VOID
5427 TREEVIEW_Unregister(void)
5428 {
5429     UnregisterClassA(WC_TREEVIEWA, NULL);
5430 }
5431
5432
5433 /* Tree Verification ****************************************************/
5434
5435 #ifdef NDEBUG
5436 static inline void
5437 TREEVIEW_VerifyChildren(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item);
5438
5439 static inline void TREEVIEW_VerifyItemCommon(TREEVIEW_INFO *infoPtr,
5440                                              TREEVIEW_ITEM *item)
5441 {
5442     assert(infoPtr != NULL);
5443     assert(item != NULL);
5444
5445     /* both NULL, or both non-null */
5446     assert((item->firstChild == NULL) == (item->lastChild == NULL));
5447
5448     assert(item->firstChild != item);
5449     assert(item->lastChild != item);
5450
5451     if (item->firstChild)
5452     {
5453         assert(item->firstChild->parent == item);
5454         assert(item->firstChild->prevSibling == NULL);
5455     }
5456
5457     if (item->lastChild)
5458     {
5459         assert(item->lastChild->parent == item);
5460         assert(item->lastChild->nextSibling == NULL);
5461     }
5462
5463     assert(item->nextSibling != item);
5464     if (item->nextSibling)
5465     {
5466         assert(item->nextSibling->parent == item->parent);
5467         assert(item->nextSibling->prevSibling == item);
5468     }
5469
5470     assert(item->prevSibling != item);
5471     if (item->prevSibling)
5472     {
5473         assert(item->prevSibling->parent == item->parent);
5474         assert(item->prevSibling->nextSibling == item);
5475     }
5476 }
5477
5478 static inline void
5479 TREEVIEW_VerifyItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
5480 {
5481     assert(item != NULL);
5482
5483     assert(item->parent != NULL);
5484     assert(item->parent != item);
5485     assert(item->iLevel == item->parent->iLevel + 1);
5486
5487     assert(DPA_GetPtrIndex(infoPtr->items, item) != -1);
5488
5489     TREEVIEW_VerifyItemCommon(infoPtr, item);
5490
5491     TREEVIEW_VerifyChildren(infoPtr, item);
5492 }
5493
5494 static inline void
5495 TREEVIEW_VerifyChildren(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
5496 {
5497     TREEVIEW_ITEM *child;
5498     assert(item != NULL);
5499
5500     for (child = item->firstChild; child != NULL; child = child->nextSibling)
5501         TREEVIEW_VerifyItem(infoPtr, child);
5502 }
5503
5504 static inline void
5505 TREEVIEW_VerifyRoot(TREEVIEW_INFO *infoPtr)
5506 {
5507     TREEVIEW_ITEM *root = infoPtr->root;
5508
5509     assert(root != NULL);
5510     assert(root->iLevel == -1);
5511     assert(root->parent == NULL);
5512     assert(root->prevSibling == NULL);
5513
5514     TREEVIEW_VerifyItemCommon(infoPtr, root);
5515
5516     TREEVIEW_VerifyChildren(infoPtr, root);
5517 }
5518
5519 static void
5520 TREEVIEW_VerifyTree(TREEVIEW_INFO *infoPtr)
5521 {
5522     assert(infoPtr != NULL);
5523
5524     TREEVIEW_VerifyRoot(infoPtr);
5525 }
5526 #endif