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     if (!TREEVIEW_DoSetItem(infoPtr, wineItem, tvItem))
2048         return FALSE;
2049
2050     /* store the orignal item values */
2051     originalItem = *wineItem;
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         si.nPos  = infoPtr->firstVisible->visibleOrder;
2694         si.nMax  = infoPtr->maxVisibleOrder - 1;
2695
2696         SetScrollInfo(hwnd, SB_VERT, &si, TRUE);
2697
2698         if (!(infoPtr->uInternalStatus & TV_VSCROLL))
2699             ShowScrollBar(hwnd, SB_VERT, TRUE);
2700         infoPtr->uInternalStatus |= TV_VSCROLL;
2701     }
2702     else
2703     {
2704         if (infoPtr->uInternalStatus & TV_VSCROLL)
2705             ShowScrollBar(hwnd, SB_VERT, FALSE);
2706         infoPtr->uInternalStatus &= ~TV_VSCROLL;
2707     }
2708
2709     if (horz)
2710     {
2711         si.nPage = infoPtr->clientWidth;
2712         si.nPos  = infoPtr->scrollX;
2713         si.nMax  = infoPtr->treeWidth - 1;
2714
2715         if (si.nPos > si.nMax - max( si.nPage-1, 0 ))
2716         {
2717            si.nPos = si.nMax - max( si.nPage-1, 0 );
2718            scrollX = si.nPos;
2719         }
2720
2721         if (!(infoPtr->uInternalStatus & TV_HSCROLL))
2722             ShowScrollBar(hwnd, SB_HORZ, TRUE);
2723         infoPtr->uInternalStatus |= TV_HSCROLL;
2724
2725         SetScrollInfo(hwnd, SB_HORZ, &si, TRUE);
2726     }
2727     else
2728     {
2729         if (infoPtr->uInternalStatus & TV_HSCROLL)
2730             ShowScrollBar(hwnd, SB_HORZ, FALSE);
2731         infoPtr->uInternalStatus &= ~TV_HSCROLL;
2732
2733         scrollX = 0;
2734     }
2735
2736     if (infoPtr->scrollX != scrollX)
2737     {
2738         TREEVIEW_HScroll(infoPtr,
2739                          MAKEWPARAM(SB_THUMBPOSITION, scrollX));
2740     }
2741
2742     if (!horz)
2743         infoPtr->uInternalStatus &= ~TV_HSCROLL;
2744 }
2745
2746 /* CtrlSpy doesn't mention this, but CorelDRAW's object manager needs it. */
2747 static LRESULT
2748 TREEVIEW_EraseBackground(TREEVIEW_INFO *infoPtr, HDC hDC)
2749 {
2750     HBRUSH hBrush = CreateSolidBrush(infoPtr->clrBk);
2751     RECT rect;
2752
2753     GetClientRect(infoPtr->hwnd, &rect);
2754     FillRect(hDC, &rect, hBrush);
2755     DeleteObject(hBrush);
2756
2757     return 1;
2758 }
2759
2760 static void
2761 TREEVIEW_Refresh(TREEVIEW_INFO *infoPtr, HDC hdc, RECT *rc)
2762 {
2763     HWND hwnd = infoPtr->hwnd;
2764     RECT rect = *rc;
2765     TREEVIEW_ITEM *wineItem;
2766
2767     if (infoPtr->clientHeight == 0 || infoPtr->clientWidth == 0)
2768     {
2769         TRACE("empty window\n");
2770         return;
2771     }
2772
2773     infoPtr->cdmode = TREEVIEW_SendCustomDrawNotify(infoPtr, CDDS_PREPAINT,
2774                                                     hdc, rect);
2775
2776     if (infoPtr->cdmode == CDRF_SKIPDEFAULT)
2777     {
2778         ReleaseDC(hwnd, hdc);
2779         return;
2780     }
2781
2782     for (wineItem = infoPtr->root->firstChild;
2783          wineItem != NULL;
2784          wineItem = TREEVIEW_GetNextListItem(infoPtr, wineItem))
2785     {
2786         if (ISVISIBLE(wineItem))
2787         {
2788             /* Avoid unneeded calculations */
2789             if (wineItem->rect.top > rect.bottom)
2790                 break;
2791             if (wineItem->rect.bottom < rect.top)
2792                 continue;
2793
2794             TREEVIEW_DrawItem(infoPtr, hdc, wineItem);
2795         }
2796     }
2797
2798     TREEVIEW_UpdateScrollBars(infoPtr);
2799
2800     if (infoPtr->cdmode & CDRF_NOTIFYPOSTPAINT)
2801         infoPtr->cdmode =
2802             TREEVIEW_SendCustomDrawNotify(infoPtr, CDDS_POSTPAINT, hdc, rect);
2803 }
2804
2805 static void
2806 TREEVIEW_Invalidate(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
2807 {
2808     if (item != NULL)
2809         InvalidateRect(infoPtr->hwnd, &item->rect, TRUE);
2810     else
2811         InvalidateRect(infoPtr->hwnd, NULL, TRUE);
2812 }
2813
2814 static LRESULT
2815 TREEVIEW_Paint(TREEVIEW_INFO *infoPtr, WPARAM wParam)
2816 {
2817     HDC hdc;
2818     PAINTSTRUCT ps;
2819     RECT rc;
2820
2821     TRACE("\n");
2822
2823     if (wParam)
2824     {
2825         hdc = (HDC)wParam;
2826         if (!GetUpdateRect(infoPtr->hwnd, &rc, TRUE))
2827         {
2828             HBITMAP hbitmap;
2829             BITMAP bitmap;
2830             hbitmap = GetCurrentObject(hdc, OBJ_BITMAP);
2831             if (!hbitmap) return 0;
2832             GetObjectA(hbitmap, sizeof(BITMAP), &bitmap);
2833             rc.left = 0; rc.top = 0;
2834             rc.right = bitmap.bmWidth;
2835             rc.bottom = bitmap.bmHeight;
2836             TREEVIEW_EraseBackground(infoPtr, (HDC)wParam);
2837         }
2838     }
2839     else
2840     {
2841         hdc = BeginPaint(infoPtr->hwnd, &ps);
2842         rc = ps.rcPaint;
2843     }
2844
2845     if(infoPtr->bRedraw) /* WM_SETREDRAW sets bRedraw */
2846         TREEVIEW_Refresh(infoPtr, hdc, &rc);
2847
2848     if (!wParam)
2849         EndPaint(infoPtr->hwnd, &ps);
2850
2851     return 0;
2852 }
2853
2854
2855 /* Sorting **************************************************************/
2856
2857 /***************************************************************************
2858  * Forward the DPA local callback to the treeview owner callback
2859  */
2860 static INT WINAPI
2861 TREEVIEW_CallBackCompare(TREEVIEW_ITEM *first, TREEVIEW_ITEM *second, LPTVSORTCB pCallBackSort)
2862 {
2863     /* Forward the call to the client-defined callback */
2864     return pCallBackSort->lpfnCompare(first->lParam,
2865                                       second->lParam,
2866                                       pCallBackSort->lParam);
2867 }
2868
2869 /***************************************************************************
2870  * Treeview native sort routine: sort on item text.
2871  */
2872 static INT WINAPI
2873 TREEVIEW_SortOnName(TREEVIEW_ITEM *first, TREEVIEW_ITEM *second,
2874                      TREEVIEW_INFO *infoPtr)
2875 {
2876     TREEVIEW_UpdateDispInfo(infoPtr, first, TVIF_TEXT);
2877     TREEVIEW_UpdateDispInfo(infoPtr, second, TVIF_TEXT);
2878
2879     return strcasecmp(first->pszText, second->pszText);
2880 }
2881
2882 /* Returns the number of physical children belonging to item. */
2883 static INT
2884 TREEVIEW_CountChildren(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
2885 {
2886     INT cChildren = 0;
2887     HTREEITEM hti;
2888
2889     for (hti = item->firstChild; hti != NULL; hti = hti->nextSibling)
2890         cChildren++;
2891
2892     return cChildren;
2893 }
2894
2895 /* Returns a DPA containing a pointer to each physical child of item in
2896  * sibling order. If item has no children, an empty DPA is returned. */
2897 static HDPA
2898 TREEVIEW_BuildChildDPA(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
2899 {
2900     HTREEITEM child = item->firstChild;
2901
2902     HDPA list = DPA_Create(8);
2903     if (list == 0) return NULL;
2904
2905     for (child = item->firstChild; child != NULL; child = child->nextSibling)
2906     {
2907         if (DPA_InsertPtr(list, INT_MAX, child) == -1)
2908         {
2909             DPA_Destroy(list);
2910             return NULL;
2911         }
2912     }
2913
2914     return list;
2915 }
2916
2917 /***************************************************************************
2918  * Setup the treeview structure with regards of the sort method
2919  * and sort the children of the TV item specified in lParam
2920  * fRecurse: currently unused. Should be zero.
2921  * parent: if pSort!=NULL, should equal pSort->hParent.
2922  *         otherwise, item which child items are to be sorted.
2923  * pSort:  sort method info. if NULL, sort on item text.
2924  *         if non-NULL, sort on item's lParam content, and let the
2925  *         application decide what that means. See also TVM_SORTCHILDRENCB.
2926  */
2927
2928 static LRESULT
2929 TREEVIEW_Sort(TREEVIEW_INFO *infoPtr, BOOL fRecurse, HTREEITEM parent,
2930               LPTVSORTCB pSort)
2931 {
2932     INT cChildren;
2933     PFNDPACOMPARE pfnCompare;
2934     LPARAM lpCompare;
2935
2936     /* undocumented feature: TVI_ROOT means `sort the whole tree' */
2937     if (parent == TVI_ROOT)
2938         parent = infoPtr->root;
2939
2940     /* Check for a valid handle to the parent item */
2941     if (!TREEVIEW_ValidItem(infoPtr, parent))
2942     {
2943         ERR("invalid item hParent=%x\n", (INT)parent);
2944         return FALSE;
2945     }
2946
2947     if (pSort)
2948     {
2949         pfnCompare = (PFNDPACOMPARE)TREEVIEW_CallBackCompare;
2950         lpCompare = (LPARAM)pSort;
2951     }
2952     else
2953     {
2954         pfnCompare = (PFNDPACOMPARE)TREEVIEW_SortOnName;
2955         lpCompare = (LPARAM)infoPtr;
2956     }
2957
2958     cChildren = TREEVIEW_CountChildren(infoPtr, parent);
2959
2960     /* Make sure there is something to sort */
2961     if (cChildren > 1)
2962     {
2963         /* TREEVIEW_ITEM rechaining */
2964         INT count = 0;
2965         HTREEITEM item = 0;
2966         HTREEITEM nextItem = 0;
2967         HTREEITEM prevItem = 0;
2968
2969         HDPA sortList = TREEVIEW_BuildChildDPA(infoPtr, parent);
2970
2971         if (sortList == NULL)
2972             return FALSE;
2973
2974         /* let DPA sort the list */
2975         DPA_Sort(sortList, pfnCompare, lpCompare);
2976
2977         /* The order of DPA entries has been changed, so fixup the
2978          * nextSibling and prevSibling pointers. */
2979
2980         item = (HTREEITEM)DPA_GetPtr(sortList, count++);
2981         while ((nextItem = (HTREEITEM)DPA_GetPtr(sortList, count++)) != NULL)
2982         {
2983             /* link the two current item toghether */
2984             item->nextSibling = nextItem;
2985             nextItem->prevSibling = item;
2986
2987             if (prevItem == NULL)
2988             {
2989                 /* this is the first item, update the parent */
2990                 parent->firstChild = item;
2991                 item->prevSibling = NULL;
2992             }
2993             else
2994             {
2995                 /* fix the back chaining */
2996                 item->prevSibling = prevItem;
2997             }
2998
2999             /* get ready for the next one */
3000             prevItem = item;
3001             item = nextItem;
3002         }
3003
3004         /* the last item is pointed to by item and never has a sibling */
3005         item->nextSibling = NULL;
3006         parent->lastChild = item;
3007
3008         DPA_Destroy(sortList);
3009
3010         TREEVIEW_VerifyTree(infoPtr);
3011
3012         if (parent->state & TVIS_EXPANDED)
3013         {
3014             int visOrder = infoPtr->firstVisible->visibleOrder;
3015
3016         if (parent == infoPtr->root)
3017             TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
3018         else
3019             TREEVIEW_RecalculateVisibleOrder(infoPtr, parent);
3020
3021             if (TREEVIEW_IsChildOf(parent, infoPtr->firstVisible))
3022             {
3023                 TREEVIEW_ITEM *item;
3024
3025                 for (item = infoPtr->root->firstChild; item != NULL;
3026                      item = TREEVIEW_GetNextListItem(infoPtr, item))
3027                 {
3028                     if (item->visibleOrder == visOrder)
3029                         break;
3030                 }
3031
3032                 TREEVIEW_SetFirstVisible(infoPtr, item, FALSE);
3033             }
3034
3035             TREEVIEW_Invalidate(infoPtr, NULL);
3036         }
3037
3038         return TRUE;
3039     }
3040     return FALSE;
3041 }
3042
3043
3044 /***************************************************************************
3045  * Setup the treeview structure with regards of the sort method
3046  * and sort the children of the TV item specified in lParam
3047  */
3048 static LRESULT
3049 TREEVIEW_SortChildrenCB(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPTVSORTCB pSort)
3050 {
3051     return TREEVIEW_Sort(infoPtr, wParam, pSort->hParent, pSort);
3052 }
3053
3054
3055 /***************************************************************************
3056  * Sort the children of the TV item specified in lParam.
3057  */
3058 static LRESULT
3059 TREEVIEW_SortChildren(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
3060 {
3061     return TREEVIEW_Sort(infoPtr, (BOOL)wParam, (HTREEITEM)lParam, NULL);
3062 }
3063
3064
3065 /* Expansion/Collapse ***************************************************/
3066
3067 static BOOL
3068 TREEVIEW_SendExpanding(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
3069                        UINT action)
3070 {
3071     return !TREEVIEW_SendTreeviewNotify(infoPtr, TVN_ITEMEXPANDINGW, action,
3072                                         TVIF_HANDLE | TVIF_STATE | TVIF_PARAM
3073                                         | TVIF_IMAGE | TVIF_SELECTEDIMAGE,
3074                                         0, wineItem);
3075 }
3076
3077 static VOID
3078 TREEVIEW_SendExpanded(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
3079                       UINT action)
3080 {
3081     TREEVIEW_SendTreeviewNotify(infoPtr, TVN_ITEMEXPANDEDW, action,
3082                                 TVIF_HANDLE | TVIF_STATE | TVIF_PARAM
3083                                 | TVIF_IMAGE | TVIF_SELECTEDIMAGE,
3084                                 0, wineItem);
3085 }
3086
3087
3088 /* This corresponds to TVM_EXPAND with TVE_COLLAPSE.
3089  * bRemoveChildren corresponds to TVE_COLLAPSERESET. */
3090 static BOOL
3091 TREEVIEW_Collapse(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
3092                   BOOL bRemoveChildren, BOOL bUser)
3093 {
3094     UINT action = TVE_COLLAPSE | (bRemoveChildren ? TVE_COLLAPSERESET : 0);
3095     BOOL bSetSelection, bSetFirstVisible;
3096
3097     TRACE("TVE_COLLAPSE %p %s\n", wineItem, TREEVIEW_ItemName(wineItem));
3098
3099     if (!(wineItem->state & TVIS_EXPANDED) || wineItem->firstChild == NULL)
3100         return FALSE;
3101
3102     if (bUser)
3103         TREEVIEW_SendExpanding(infoPtr, wineItem, action);
3104
3105     wineItem->state &= ~TVIS_EXPANDED;
3106
3107     if (bUser)
3108         TREEVIEW_SendExpanded(infoPtr, wineItem, action);
3109
3110     bSetSelection = (infoPtr->selectedItem != NULL
3111                      && TREEVIEW_IsChildOf(wineItem, infoPtr->selectedItem));
3112
3113     bSetFirstVisible = (infoPtr->firstVisible != NULL
3114                         && TREEVIEW_IsChildOf(wineItem, infoPtr->firstVisible));
3115
3116     if (bRemoveChildren)
3117     {
3118         TRACE("TVE_COLLAPSERESET\n");
3119         wineItem->state &= ~TVIS_EXPANDEDONCE;
3120         TREEVIEW_RemoveAllChildren(infoPtr, wineItem);
3121     }
3122
3123     if (wineItem->firstChild)
3124     {
3125         TREEVIEW_ITEM *item, *sibling;
3126
3127         sibling = TREEVIEW_GetNextListItem(infoPtr, wineItem);
3128
3129         for (item = wineItem->firstChild; item != sibling;
3130              item = TREEVIEW_GetNextListItem(infoPtr, item))
3131         {
3132             item->visibleOrder = -1;
3133         }
3134     }
3135
3136     TREEVIEW_RecalculateVisibleOrder(infoPtr, wineItem);
3137
3138     TREEVIEW_SetFirstVisible(infoPtr, bSetFirstVisible ? wineItem
3139                              : infoPtr->firstVisible, TRUE);
3140
3141     if (bSetSelection)
3142     {
3143         /* Don't call DoSelectItem, it sends notifications. */
3144         if (TREEVIEW_ValidItem(infoPtr, infoPtr->selectedItem))
3145             infoPtr->selectedItem->state &= ~TVIS_SELECTED;
3146         wineItem->state |= TVIS_SELECTED;
3147         infoPtr->selectedItem = wineItem;
3148
3149         TREEVIEW_EnsureVisible(infoPtr, wineItem, FALSE);
3150     }
3151
3152     TREEVIEW_UpdateScrollBars(infoPtr);
3153     TREEVIEW_Invalidate(infoPtr, NULL);
3154
3155     return TRUE;
3156 }
3157
3158 static BOOL
3159 TREEVIEW_Expand(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
3160                 BOOL bExpandPartial, BOOL bUser)
3161 {
3162     TRACE("\n");
3163
3164     if (!TREEVIEW_HasChildren(infoPtr, wineItem)
3165         || wineItem->state & TVIS_EXPANDED)
3166         return FALSE;
3167
3168     TRACE("TVE_EXPAND %p %s\n", wineItem, TREEVIEW_ItemName(wineItem));
3169
3170     if (bUser || !(wineItem->state & TVIS_EXPANDEDONCE))
3171     {
3172         if (!TREEVIEW_SendExpanding(infoPtr, wineItem, TVE_EXPAND))
3173         {
3174             TRACE("  TVN_ITEMEXPANDING returned TRUE, exiting...\n");
3175             return FALSE;
3176         }
3177
3178         wineItem->state |= TVIS_EXPANDED;
3179         TREEVIEW_SendExpanded(infoPtr, wineItem, TVE_EXPAND);
3180         wineItem->state |= TVIS_EXPANDEDONCE;
3181     }
3182     else
3183     {
3184         /* this item has already been expanded */
3185         wineItem->state |= TVIS_EXPANDED;
3186     }
3187
3188     if (bExpandPartial)
3189         FIXME("TVE_EXPANDPARTIAL not implemented\n");
3190
3191     TREEVIEW_RecalculateVisibleOrder(infoPtr, wineItem);
3192     TREEVIEW_UpdateSubTree(infoPtr, wineItem);
3193     TREEVIEW_UpdateScrollBars(infoPtr);
3194
3195     /* Scroll up so that as many children as possible are visible.
3196      * This looses when expanding causes an HScroll bar to appear, but we
3197      * don't know that yet, so the last item is obscured. */
3198     if (wineItem->firstChild != NULL)
3199     {
3200         int nChildren = wineItem->lastChild->visibleOrder
3201             - wineItem->firstChild->visibleOrder + 1;
3202
3203         int visible_pos = wineItem->visibleOrder
3204             - infoPtr->firstVisible->visibleOrder;
3205
3206         int rows_below = TREEVIEW_GetVisibleCount(infoPtr) - visible_pos - 1;
3207
3208         if (visible_pos > 0 && nChildren > rows_below)
3209         {
3210             int scroll = nChildren - rows_below;
3211
3212             if (scroll > visible_pos)
3213                 scroll = visible_pos;
3214
3215             if (scroll > 0)
3216             {
3217                 TREEVIEW_ITEM *newFirstVisible
3218                     = TREEVIEW_GetListItem(infoPtr, infoPtr->firstVisible,
3219                                            scroll);
3220
3221
3222                 TREEVIEW_SetFirstVisible(infoPtr, newFirstVisible, TRUE);
3223             }
3224         }
3225     }
3226
3227     TREEVIEW_Invalidate(infoPtr, NULL);
3228
3229     return TRUE;
3230 }
3231
3232 static BOOL
3233 TREEVIEW_Toggle(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem, BOOL bUser)
3234 {
3235     TRACE("\n");
3236
3237     if (wineItem->state & TVIS_EXPANDED)
3238         return TREEVIEW_Collapse(infoPtr, wineItem, FALSE, bUser);
3239     else
3240         return TREEVIEW_Expand(infoPtr, wineItem, FALSE, bUser);
3241 }
3242
3243 static VOID
3244 TREEVIEW_ExpandAll(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
3245 {
3246     TREEVIEW_Expand(infoPtr, item, FALSE, TRUE);
3247
3248     for (item = item->firstChild; item != NULL; item = item->nextSibling)
3249     {
3250         if (TREEVIEW_HasChildren(infoPtr, item))
3251             TREEVIEW_ExpandAll(infoPtr, item);
3252     }
3253 }
3254
3255 /* Note:If the specified item is the child of a collapsed parent item,
3256    the parent's list of child items is (recursively) expanded to reveal the
3257    specified item. This is mentioned for TREEVIEW_SelectItem; don't
3258    know if it also applies here.
3259 */
3260
3261 static LRESULT
3262 TREEVIEW_ExpandMsg(TREEVIEW_INFO *infoPtr, UINT flag, HTREEITEM wineItem)
3263 {
3264     if (!TREEVIEW_ValidItem(infoPtr, wineItem))
3265         return 0;
3266
3267     TRACE("For (%s) item:%d, flags %x, state:%d\n",
3268               TREEVIEW_ItemName(wineItem), flag,
3269               TREEVIEW_GetItemIndex(infoPtr, wineItem), wineItem->state);
3270
3271     switch (flag & TVE_TOGGLE)
3272     {
3273     case TVE_COLLAPSE:
3274         return TREEVIEW_Collapse(infoPtr, wineItem, flag & TVE_COLLAPSERESET,
3275                                  FALSE);
3276
3277     case TVE_EXPAND:
3278         return TREEVIEW_Expand(infoPtr, wineItem, flag & TVE_EXPANDPARTIAL,
3279                                FALSE);
3280
3281     case TVE_TOGGLE:
3282         return TREEVIEW_Toggle(infoPtr, wineItem, TRUE);
3283
3284     default:
3285         return 0;
3286     }
3287
3288 #if 0
3289     TRACE("Exiting, Item %p state is now %d...\n", wineItem, wineItem->state);
3290 #endif
3291 }
3292
3293 /* Hit-Testing **********************************************************/
3294
3295 static TREEVIEW_ITEM *
3296 TREEVIEW_HitTestPoint(TREEVIEW_INFO *infoPtr, POINT pt)
3297 {
3298     TREEVIEW_ITEM *wineItem;
3299     LONG row;
3300
3301     if (!infoPtr->firstVisible)
3302         return NULL;
3303
3304     row = pt.y / infoPtr->uItemHeight + infoPtr->firstVisible->visibleOrder;
3305
3306     for (wineItem = infoPtr->firstVisible; wineItem != NULL;
3307          wineItem = TREEVIEW_GetNextListItem(infoPtr, wineItem))
3308     {
3309         if (row >= wineItem->visibleOrder
3310             && row < wineItem->visibleOrder + wineItem->iIntegral)
3311             break;
3312     }
3313
3314     return wineItem;
3315 }
3316
3317 static LRESULT
3318 TREEVIEW_HitTest(TREEVIEW_INFO *infoPtr, LPTVHITTESTINFO lpht)
3319 {
3320     TREEVIEW_ITEM *wineItem;
3321     RECT rect;
3322     UINT status;
3323     LONG x, y;
3324
3325     lpht->hItem = 0;
3326     GetClientRect(infoPtr->hwnd, &rect);
3327     status = 0;
3328     x = lpht->pt.x;
3329     y = lpht->pt.y;
3330
3331     if (x < rect.left)
3332     {
3333         status |= TVHT_TOLEFT;
3334     }
3335     else if (x > rect.right)
3336     {
3337         status |= TVHT_TORIGHT;
3338     }
3339
3340     if (y < rect.top)
3341     {
3342         status |= TVHT_ABOVE;
3343     }
3344     else if (y > rect.bottom)
3345     {
3346         status |= TVHT_BELOW;
3347     }
3348
3349     if (status)
3350     {
3351         lpht->flags = status;
3352         return (LRESULT)(HTREEITEM)NULL;
3353     }
3354
3355     wineItem = TREEVIEW_HitTestPoint(infoPtr, lpht->pt);
3356     if (!wineItem)
3357     {
3358         lpht->flags = TVHT_NOWHERE;
3359         return (LRESULT)(HTREEITEM)NULL;
3360     }
3361
3362     if (x >= wineItem->textOffset + wineItem->textWidth)
3363     {
3364         lpht->flags = TVHT_ONITEMRIGHT;
3365     }
3366     else if (x >= wineItem->textOffset)
3367     {
3368         lpht->flags = TVHT_ONITEMLABEL;
3369     }
3370     else if (x >= wineItem->imageOffset)
3371     {
3372         lpht->flags = TVHT_ONITEMICON;
3373     }
3374     else if (x >= wineItem->stateOffset)
3375     {
3376         lpht->flags = TVHT_ONITEMSTATEICON;
3377     }
3378     else if (x >= wineItem->linesOffset && infoPtr->dwStyle & TVS_HASBUTTONS)
3379     {
3380         lpht->flags = TVHT_ONITEMBUTTON;
3381     }
3382     else
3383     {
3384         lpht->flags = TVHT_ONITEMINDENT;
3385     }
3386
3387     lpht->hItem = wineItem;
3388     TRACE("(%ld,%ld):result %x\n", lpht->pt.x, lpht->pt.y, lpht->flags);
3389
3390     return (LRESULT)wineItem;
3391 }
3392
3393 /* Item Label Editing ***************************************************/
3394
3395 static LRESULT
3396 TREEVIEW_GetEditControl(TREEVIEW_INFO *infoPtr)
3397 {
3398     return (LRESULT)infoPtr->hwndEdit;
3399 }
3400
3401 static LRESULT CALLBACK
3402 TREEVIEW_Edit_SubclassProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
3403 {
3404     TREEVIEW_INFO *infoPtr;
3405     BOOL bCancel = FALSE;
3406
3407     switch (uMsg)
3408     {
3409     case WM_PAINT:
3410         {
3411             LRESULT rc;
3412             TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(GetParent(hwnd));
3413
3414             TRACE("WM_PAINT start\n");
3415             rc = CallWindowProcA(infoPtr->wpEditOrig, hwnd, uMsg, wParam,
3416                                  lParam);
3417             TRACE("WM_PAINT done\n");
3418             return rc;
3419         }
3420
3421     case WM_KILLFOCUS:
3422     {
3423         TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(GetParent(hwnd));
3424         if (infoPtr->bIgnoreEditKillFocus)
3425             return TRUE;
3426
3427         break;
3428     }
3429
3430     case WM_GETDLGCODE:
3431         return DLGC_WANTARROWS | DLGC_WANTALLKEYS;
3432
3433     case WM_KEYDOWN:
3434         if (wParam == (WPARAM)VK_ESCAPE)
3435         {
3436             bCancel = TRUE;
3437             break;
3438         }
3439         else if (wParam == (WPARAM)VK_RETURN)
3440         {
3441             break;
3442         }
3443
3444         /* fall through */
3445     default:
3446         {
3447             TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(GetParent(hwnd));
3448
3449             return CallWindowProcA(infoPtr->wpEditOrig, hwnd, uMsg, wParam,
3450                                    lParam);
3451         }
3452     }
3453
3454     /* Processing TVN_ENDLABELEDIT message could kill the focus       */
3455     /* eg. Using a messagebox                                         */
3456
3457     infoPtr = TREEVIEW_GetInfoPtr(GetParent(hwnd));
3458     infoPtr->bIgnoreEditKillFocus = TRUE;
3459     TREEVIEW_EndEditLabelNow(infoPtr, bCancel || !infoPtr->bLabelChanged);
3460     infoPtr->bIgnoreEditKillFocus = FALSE;
3461
3462     return 0;
3463 }
3464
3465
3466 /* should handle edit control messages here */
3467
3468 static LRESULT
3469 TREEVIEW_Command(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
3470 {
3471     TRACE("%x %ld\n", wParam, lParam);
3472
3473     switch (HIWORD(wParam))
3474     {
3475     case EN_UPDATE:
3476         {
3477             /*
3478              * Adjust the edit window size
3479              */
3480             char buffer[1024];
3481             TREEVIEW_ITEM *editItem = infoPtr->selectedItem;
3482             HDC hdc = GetDC(infoPtr->hwndEdit);
3483             SIZE sz;
3484             int len;
3485             HFONT hFont, hOldFont = 0;
3486
3487             infoPtr->bLabelChanged = TRUE;
3488
3489             len = GetWindowTextA(infoPtr->hwndEdit, buffer, sizeof(buffer));
3490
3491             /* Select font to get the right dimension of the string */
3492             hFont = (HFONT)SendMessageA(infoPtr->hwndEdit, WM_GETFONT, 0, 0);
3493             if (hFont != 0)
3494             {
3495                 hOldFont = SelectObject(hdc, hFont);
3496             }
3497
3498             if (GetTextExtentPoint32A(hdc, buffer, strlen(buffer), &sz))
3499             {
3500                 TEXTMETRICA textMetric;
3501
3502                 /* Add Extra spacing for the next character */
3503                 GetTextMetricsA(hdc, &textMetric);
3504                 sz.cx += (textMetric.tmMaxCharWidth * 2);
3505
3506                 sz.cx = max(sz.cx, textMetric.tmMaxCharWidth * 3);
3507                 sz.cx = min(sz.cx,
3508                             infoPtr->clientWidth - editItem->textOffset + 2);
3509
3510                 SetWindowPos(infoPtr->hwndEdit,
3511                              HWND_TOP,
3512                              0,
3513                              0,
3514                              sz.cx,
3515                              editItem->rect.bottom - editItem->rect.top + 3,
3516                              SWP_NOMOVE | SWP_DRAWFRAME);
3517             }
3518
3519             if (hFont != 0)
3520             {
3521                 SelectObject(hdc, hOldFont);
3522             }
3523
3524             ReleaseDC(infoPtr->hwnd, hdc);
3525             break;
3526         }
3527
3528     default:
3529         return SendMessageA(GetParent(infoPtr->hwnd), WM_COMMAND, wParam, lParam);
3530     }
3531
3532     return 0;
3533 }
3534
3535 static HWND
3536 TREEVIEW_EditLabelA(TREEVIEW_INFO *infoPtr, HTREEITEM hItem)
3537 {
3538     HWND hwnd = infoPtr->hwnd;
3539     HWND hwndEdit;
3540     SIZE sz;
3541     TREEVIEW_ITEM *editItem = hItem;
3542     HINSTANCE hinst = (HINSTANCE)GetWindowLongA(hwnd, GWL_HINSTANCE);
3543     HDC hdc;
3544     HFONT hOldFont=0;
3545     TEXTMETRICA textMetric;
3546
3547     TRACE("%x %p\n", (unsigned)hwnd, hItem);
3548     if (!TREEVIEW_ValidItem(infoPtr, editItem))
3549         return NULL;
3550
3551     if (infoPtr->hwndEdit)
3552         return infoPtr->hwndEdit;
3553
3554     infoPtr->bLabelChanged = FALSE;
3555
3556     /* Make sure that edit item is selected */
3557     TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, hItem, TVC_UNKNOWN);
3558     TREEVIEW_EnsureVisible(infoPtr, hItem, TRUE);
3559
3560     TREEVIEW_UpdateDispInfo(infoPtr, editItem, TVIF_TEXT);
3561
3562     hdc = GetDC(hwnd);
3563     /* Select the font to get appropriate metric dimensions */
3564     if (infoPtr->hFont != 0)
3565     {
3566         hOldFont = SelectObject(hdc, infoPtr->hFont);
3567     }
3568
3569     /* Get string length in pixels */
3570     GetTextExtentPoint32A(hdc, editItem->pszText, strlen(editItem->pszText),
3571                           &sz);
3572
3573     /* Add Extra spacing for the next character */
3574     GetTextMetricsA(hdc, &textMetric);
3575     sz.cx += (textMetric.tmMaxCharWidth * 2);
3576
3577     sz.cx = max(sz.cx, textMetric.tmMaxCharWidth * 3);
3578     sz.cx = min(sz.cx, infoPtr->clientWidth - editItem->textOffset + 2);
3579
3580     if (infoPtr->hFont != 0)
3581     {
3582         SelectObject(hdc, hOldFont);
3583     }
3584
3585     ReleaseDC(hwnd, hdc);
3586     hwndEdit = CreateWindowExA(WS_EX_LEFT,
3587                                "EDIT",
3588                                0,
3589                                WS_CHILD | WS_BORDER | ES_AUTOHSCROLL |
3590                                WS_CLIPSIBLINGS | ES_WANTRETURN |
3591                                ES_LEFT, editItem->textOffset - 2,
3592                                editItem->rect.top - 1, sz.cx + 3,
3593                                editItem->rect.bottom -
3594                                editItem->rect.top + 3, hwnd, 0, hinst, 0);
3595 /* FIXME: (HMENU)IDTVEDIT,pcs->hInstance,0); */
3596
3597     infoPtr->hwndEdit = hwndEdit;
3598
3599     /* Get a 2D border. */
3600     SetWindowLongA(hwndEdit, GWL_EXSTYLE,
3601                    GetWindowLongA(hwndEdit, GWL_EXSTYLE) & ~WS_EX_CLIENTEDGE);
3602     SetWindowLongA(hwndEdit, GWL_STYLE,
3603                    GetWindowLongA(hwndEdit, GWL_STYLE) | WS_BORDER);
3604
3605     SendMessageA(hwndEdit, WM_SETFONT,
3606                  (WPARAM)TREEVIEW_FontForItem(infoPtr, editItem), FALSE);
3607
3608     infoPtr->wpEditOrig = (WNDPROC)SetWindowLongA(hwndEdit, GWL_WNDPROC,
3609                                                   (DWORD)
3610                                                   TREEVIEW_Edit_SubclassProc);
3611
3612     if (TREEVIEW_BeginLabelEditNotify(infoPtr, editItem))
3613     {
3614         DestroyWindow(hwndEdit);
3615         infoPtr->hwndEdit = 0;
3616         return NULL;
3617     }
3618
3619     infoPtr->selectedItem = hItem;
3620     SetWindowTextA(hwndEdit, editItem->pszText);
3621     SetFocus(hwndEdit);
3622     SendMessageA(hwndEdit, EM_SETSEL, 0, -1);
3623     ShowWindow(hwndEdit, SW_SHOW);
3624
3625     return hwndEdit;
3626 }
3627
3628
3629 static LRESULT
3630 TREEVIEW_EndEditLabelNow(TREEVIEW_INFO *infoPtr, BOOL bCancel)
3631 {
3632     HWND hwnd = infoPtr->hwnd;
3633     TREEVIEW_ITEM *editedItem = infoPtr->selectedItem;
3634     NMTVDISPINFOA tvdi;
3635     BOOL bCommit;
3636     char tmpText[1024] = { '\0' };
3637     int iLength = 0;
3638
3639     if (!infoPtr->hwndEdit)
3640         return FALSE;
3641
3642     tvdi.hdr.hwndFrom = hwnd;
3643     tvdi.hdr.idFrom = GetWindowLongA(hwnd, GWL_ID);
3644     tvdi.hdr.code = get_notifycode(infoPtr, TVN_ENDLABELEDITW);
3645     tvdi.item.mask = 0;
3646     tvdi.item.hItem = editedItem;
3647     tvdi.item.state = editedItem->state;
3648     tvdi.item.lParam = editedItem->lParam;
3649
3650     if (!bCancel)
3651     {
3652         iLength = GetWindowTextA(infoPtr->hwndEdit, tmpText, 1023);
3653
3654         if (iLength >= 1023)
3655         {
3656             ERR("Insufficient space to retrieve new item label\n");
3657         }
3658
3659         tvdi.item.pszText = tmpText;
3660         tvdi.item.cchTextMax = iLength + 1;
3661     }
3662     else
3663     {
3664         tvdi.item.pszText = NULL;
3665         tvdi.item.cchTextMax = 0;
3666     }
3667
3668     bCommit = (BOOL)TREEVIEW_SendRealNotify(infoPtr,
3669                                  (WPARAM)tvdi.hdr.idFrom, (LPARAM)&tvdi);
3670
3671     if (!bCancel && bCommit)    /* Apply the changes */
3672     {
3673         if (strcmp(tmpText, editedItem->pszText) != 0)
3674         {
3675             if (NULL == COMCTL32_ReAlloc(editedItem->pszText, iLength + 1))
3676             {
3677                 ERR("OutOfMemory, cannot allocate space for label\n");
3678                 DestroyWindow(infoPtr->hwndEdit);
3679                 infoPtr->hwndEdit = 0;
3680                 return FALSE;
3681             }
3682             else
3683             {
3684                 editedItem->cchTextMax = iLength + 1;
3685                 lstrcpyA(editedItem->pszText, tmpText);
3686             }
3687         }
3688     }
3689
3690     ShowWindow(infoPtr->hwndEdit, SW_HIDE);
3691     DestroyWindow(infoPtr->hwndEdit);
3692     infoPtr->hwndEdit = 0;
3693     return TRUE;
3694 }
3695
3696 static LRESULT
3697 TREEVIEW_HandleTimer(TREEVIEW_INFO *infoPtr, WPARAM wParam)
3698 {
3699     if (wParam != TV_EDIT_TIMER)
3700     {
3701         ERR("got unknown timer\n");
3702         return 1;
3703     }
3704
3705     KillTimer(infoPtr->hwnd, TV_EDIT_TIMER);
3706     infoPtr->Timer &= ~TV_EDIT_TIMER_SET;
3707
3708     TREEVIEW_EditLabelA(infoPtr, infoPtr->selectedItem);
3709
3710     return 0;
3711 }
3712
3713
3714 /* Mouse Tracking/Drag **************************************************/
3715
3716 /***************************************************************************
3717  * This is quite unusual piece of code, but that's how it's implemented in
3718  * Windows.
3719  */
3720 static LRESULT
3721 TREEVIEW_TrackMouse(TREEVIEW_INFO *infoPtr, POINT pt)
3722 {
3723     INT cxDrag = GetSystemMetrics(SM_CXDRAG);
3724     INT cyDrag = GetSystemMetrics(SM_CYDRAG);
3725     RECT r;
3726     MSG msg;
3727
3728     r.top = pt.y - cyDrag;
3729     r.left = pt.x - cxDrag;
3730     r.bottom = pt.y + cyDrag;
3731     r.right = pt.x + cxDrag;
3732
3733     SetCapture(infoPtr->hwnd);
3734
3735     while (1)
3736     {
3737         if (PeekMessageA(&msg, 0, 0, 0, PM_REMOVE | PM_NOYIELD))
3738         {
3739             if (msg.message == WM_MOUSEMOVE)
3740             {
3741                 pt.x = SLOWORD(msg.lParam);
3742                 pt.y = SHIWORD(msg.lParam);
3743                 if (PtInRect(&r, pt))
3744                     continue;
3745                 else
3746                 {
3747                     ReleaseCapture();
3748                     return 1;
3749                 }
3750             }
3751             else if (msg.message >= WM_LBUTTONDOWN &&
3752                      msg.message <= WM_RBUTTONDBLCLK)
3753             {
3754                 if (msg.message == WM_RBUTTONUP)
3755                     TREEVIEW_RButtonUp(infoPtr, &pt);
3756                 break;
3757             }
3758
3759             DispatchMessageA(&msg);
3760         }
3761
3762         if (GetCapture() != infoPtr->hwnd)
3763             return 0;
3764     }
3765
3766     ReleaseCapture();
3767     return 0;
3768 }
3769
3770
3771 static LRESULT
3772 TREEVIEW_LButtonDoubleClick(TREEVIEW_INFO *infoPtr, LPARAM lParam)
3773 {
3774     TREEVIEW_ITEM *wineItem;
3775     TVHITTESTINFO hit;
3776
3777     TRACE("\n");
3778     SetFocus(infoPtr->hwnd);
3779
3780     if (infoPtr->Timer & TV_EDIT_TIMER_SET)
3781     {
3782         /* If there is pending 'edit label' event - kill it now */
3783         KillTimer(infoPtr->hwnd, TV_EDIT_TIMER);
3784     }
3785
3786     hit.pt.x = SLOWORD(lParam);
3787     hit.pt.y = SHIWORD(lParam);
3788
3789     wineItem = (TREEVIEW_ITEM *)TREEVIEW_HitTest(infoPtr, &hit);
3790     if (!wineItem)
3791         return 0;
3792     TRACE("item %d\n", TREEVIEW_GetItemIndex(infoPtr, wineItem));
3793
3794     if (TREEVIEW_SendSimpleNotify(infoPtr, NM_DBLCLK) == FALSE)
3795     {                           /* FIXME! */
3796         switch (hit.flags)
3797         {
3798         case TVHT_ONITEMRIGHT:
3799             /* FIXME: we should not have sent NM_DBLCLK in this case. */
3800             break;
3801
3802         case TVHT_ONITEMINDENT:
3803             if (!(infoPtr->dwStyle & TVS_HASLINES))
3804             {
3805                 break;
3806             }
3807             else
3808             {
3809                 int level = hit.pt.x / infoPtr->uIndent;
3810                 if (!(infoPtr->dwStyle & TVS_LINESATROOT)) level++;
3811
3812                 while (wineItem->iLevel > level)
3813                 {
3814                     wineItem = wineItem->parent;
3815                 }
3816
3817                 /* fall through */
3818             }
3819
3820         case TVHT_ONITEMLABEL:
3821         case TVHT_ONITEMICON:
3822         case TVHT_ONITEMBUTTON:
3823             TREEVIEW_Toggle(infoPtr, wineItem, TRUE);
3824             break;
3825
3826         case TVHT_ONITEMSTATEICON:
3827            if (infoPtr->dwStyle & TVS_CHECKBOXES)
3828                TREEVIEW_ToggleItemState(infoPtr, wineItem);
3829            else
3830                TREEVIEW_Toggle(infoPtr, wineItem, TRUE);
3831            break;
3832         }
3833     }
3834     return TRUE;
3835 }
3836
3837
3838 static LRESULT
3839 TREEVIEW_LButtonDown(TREEVIEW_INFO *infoPtr, LPARAM lParam)
3840 {
3841     HWND hwnd = infoPtr->hwnd;
3842     TVHITTESTINFO ht;
3843     BOOL bTrack;
3844     HTREEITEM tempItem;
3845
3846     /* If Edit control is active - kill it and return.
3847      * The best way to do it is to set focus to itself.
3848      * Edit control subclassed procedure will automatically call
3849      * EndEditLabelNow.
3850      */
3851     if (infoPtr->hwndEdit)
3852     {
3853         SetFocus(hwnd);
3854         return 0;
3855     }
3856
3857     ht.pt.x = SLOWORD(lParam);
3858     ht.pt.y = SHIWORD(lParam);
3859
3860     TREEVIEW_HitTest(infoPtr, &ht);
3861     TRACE("item %d\n", TREEVIEW_GetItemIndex(infoPtr, ht.hItem));
3862
3863     /* update focusedItem and redraw both items */
3864     if(ht.hItem && (ht.flags & TVHT_ONITEM))
3865     {
3866         infoPtr->focusedItem = ht.hItem;
3867         InvalidateRect(hwnd, &(((HTREEITEM)(ht.hItem))->rect), TRUE);
3868
3869         if(infoPtr->selectedItem)
3870             InvalidateRect(hwnd, &(infoPtr->selectedItem->rect), TRUE);
3871     }
3872
3873     bTrack = (ht.flags & TVHT_ONITEM)
3874         && !(infoPtr->dwStyle & TVS_DISABLEDRAGDROP);
3875
3876     /* Send NM_CLICK right away */
3877     if (!bTrack)
3878         if (TREEVIEW_SendSimpleNotify(infoPtr, NM_CLICK))
3879             goto setfocus;
3880
3881     if (ht.flags & TVHT_ONITEMBUTTON)
3882     {
3883         TREEVIEW_Toggle(infoPtr, ht.hItem, TRUE);
3884         goto setfocus;
3885     }
3886     else if (bTrack)
3887     {   /* if TREEVIEW_TrackMouse == 1 dragging occurred and the cursor left the dragged item's rectangle */
3888         if (TREEVIEW_TrackMouse(infoPtr, ht.pt))
3889         {
3890             TREEVIEW_SendTreeviewDnDNotify(infoPtr, TVN_BEGINDRAGW, ht.hItem, ht.pt);
3891             infoPtr->dropItem = ht.hItem;
3892
3893             /* clean up focusedItem as we dragged and won't select this item */
3894             if(infoPtr->focusedItem)
3895             {
3896                 /* refresh the item that was focused */
3897                 tempItem = infoPtr->focusedItem;
3898                 infoPtr->focusedItem = 0;
3899                 InvalidateRect(infoPtr->hwnd, &tempItem->rect, TRUE);
3900
3901                 /* refresh the selected item to return the filled background */
3902                 InvalidateRect(infoPtr->hwnd, &(infoPtr->selectedItem->rect), TRUE);
3903             }
3904
3905             return 0;
3906         }
3907     }
3908
3909     if (TREEVIEW_SendSimpleNotify(infoPtr, NM_CLICK))
3910         goto setfocus;
3911
3912     /*
3913      * If the style allows editing and the node is already selected
3914      * and the click occurred on the item label...
3915      */
3916     if ((infoPtr->dwStyle & TVS_EDITLABELS) &&
3917                 (ht.flags & TVHT_ONITEMLABEL) && (infoPtr->selectedItem == ht.hItem))
3918     {
3919         if (infoPtr->Timer & TV_EDIT_TIMER_SET)
3920             KillTimer(hwnd, TV_EDIT_TIMER);
3921
3922         SetTimer(hwnd, TV_EDIT_TIMER, GetDoubleClickTime(), 0);
3923         infoPtr->Timer |= TV_EDIT_TIMER_SET;
3924     }
3925     else if (ht.flags & TVHT_ONITEM) /* select the item if the hit was inside of the icon or text */
3926     {
3927         /*
3928          * if we are TVS_SINGLEEXPAND then we want this single click to
3929          * do a bunch of things.
3930          */
3931         if((infoPtr->dwStyle & TVS_SINGLEEXPAND) &&
3932           (infoPtr->hwndEdit == 0))
3933         {
3934             TREEVIEW_ITEM *SelItem;
3935
3936             /*
3937              * Send the notification
3938              */
3939             TREEVIEW_SendTreeviewNotify(infoPtr, TVN_SINGLEEXPAND, TVC_UNKNOWN, TVIF_HANDLE | TVIF_PARAM, ht.hItem, 0);
3940
3941             /*
3942              * Close the previous selection all the way to the root
3943              * as long as the new selection is not a child
3944              */
3945             if((infoPtr->selectedItem)
3946                 && (infoPtr->selectedItem != ht.hItem))
3947             {
3948                 BOOL closeit = TRUE;
3949                 SelItem = ht.hItem;
3950
3951                 /* determine if the hitItem is a child of the currently selected item */
3952                 while(closeit && SelItem && TREEVIEW_ValidItem(infoPtr, SelItem) && (SelItem != infoPtr->root))
3953                 {
3954                     closeit = (SelItem != infoPtr->selectedItem);
3955                     SelItem = SelItem->parent;
3956                 }
3957
3958                 if(closeit)
3959                 {
3960                     if(TREEVIEW_ValidItem(infoPtr, infoPtr->selectedItem))
3961                         SelItem = infoPtr->selectedItem;
3962
3963                     while(SelItem && (SelItem != ht.hItem) && TREEVIEW_ValidItem(infoPtr, SelItem) && (SelItem != infoPtr->root))
3964                     {
3965                         TREEVIEW_Collapse(infoPtr, SelItem, FALSE, FALSE);
3966                         SelItem = SelItem->parent;
3967                     }
3968                 }
3969             }
3970
3971             /*
3972              * Expand the current item
3973              */
3974             TREEVIEW_Expand(infoPtr, ht.hItem, TVE_TOGGLE, FALSE);
3975         }
3976
3977         /* Select the current item */
3978         TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, ht.hItem, TVC_BYMOUSE);
3979     }
3980     else if (ht.flags & TVHT_ONITEMSTATEICON)
3981     {
3982         /* TVS_CHECKBOXES requires us to toggle the current state */
3983         if (infoPtr->dwStyle & TVS_CHECKBOXES)
3984             TREEVIEW_ToggleItemState(infoPtr, ht.hItem);
3985     }
3986
3987   setfocus:
3988     SetFocus(hwnd);
3989     return 0;
3990 }
3991
3992
3993 static LRESULT
3994 TREEVIEW_RButtonDown(TREEVIEW_INFO *infoPtr, LPARAM lParam)
3995 {
3996     TVHITTESTINFO ht;
3997
3998     if (infoPtr->hwndEdit)
3999     {
4000         SetFocus(infoPtr->hwnd);
4001         return 0;
4002     }
4003
4004     ht.pt.x = SLOWORD(lParam);
4005     ht.pt.y = SHIWORD(lParam);
4006
4007     TREEVIEW_HitTest(infoPtr, &ht);
4008
4009     if (TREEVIEW_TrackMouse(infoPtr, ht.pt))
4010     {
4011         if (ht.hItem)
4012         {
4013             TREEVIEW_SendTreeviewDnDNotify(infoPtr, TVN_BEGINRDRAGW, ht.hItem, ht.pt);
4014             infoPtr->dropItem = ht.hItem;
4015         }
4016     }
4017     else
4018     {
4019         SetFocus(infoPtr->hwnd);
4020         TREEVIEW_SendSimpleNotify(infoPtr, NM_RCLICK);
4021     }
4022
4023     return 0;
4024 }
4025
4026 static LRESULT
4027 TREEVIEW_RButtonUp(TREEVIEW_INFO *infoPtr, LPPOINT pPt)
4028 {
4029     return 0;
4030 }
4031
4032
4033 static LRESULT
4034 TREEVIEW_CreateDragImage(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
4035 {
4036     TREEVIEW_ITEM *dragItem = (HTREEITEM)lParam;
4037     INT cx, cy;
4038     HDC hdc, htopdc;
4039     HWND hwtop;
4040     HBITMAP hbmp, hOldbmp;
4041     SIZE size;
4042     RECT rc;
4043     HFONT hOldFont;
4044
4045     TRACE("\n");
4046
4047     if (!(infoPtr->himlNormal))
4048         return 0;
4049
4050     if (!dragItem || !TREEVIEW_ValidItem(infoPtr, dragItem))
4051         return 0;
4052
4053     TREEVIEW_UpdateDispInfo(infoPtr, dragItem, TVIF_TEXT);
4054
4055     hwtop = GetDesktopWindow();
4056     htopdc = GetDC(hwtop);
4057     hdc = CreateCompatibleDC(htopdc);
4058
4059     hOldFont = SelectObject(hdc, infoPtr->hFont);
4060     GetTextExtentPoint32A(hdc, dragItem->pszText, lstrlenA(dragItem->pszText),
4061                           &size);
4062     TRACE("%ld %ld %s %d\n", size.cx, size.cy, dragItem->pszText,
4063           lstrlenA(dragItem->pszText));
4064     hbmp = CreateCompatibleBitmap(htopdc, size.cx, size.cy);
4065     hOldbmp = SelectObject(hdc, hbmp);
4066
4067     ImageList_GetIconSize(infoPtr->himlNormal, &cx, &cy);
4068     size.cx += cx;
4069     if (cy > size.cy)
4070         size.cy = cy;
4071
4072     infoPtr->dragList = ImageList_Create(size.cx, size.cy, ILC_COLOR, 10, 10);
4073     ImageList_Draw(infoPtr->himlNormal, dragItem->iImage, hdc, 0, 0,
4074                    ILD_NORMAL);
4075
4076 /*
4077  ImageList_GetImageInfo (infoPtr->himlNormal, dragItem->hItem, &iminfo);
4078  ImageList_AddMasked (infoPtr->dragList, iminfo.hbmImage, CLR_DEFAULT);
4079 */
4080
4081 /* draw item text */
4082
4083     SetRect(&rc, cx, 0, size.cx, size.cy);
4084     DrawTextA(hdc, dragItem->pszText, lstrlenA(dragItem->pszText), &rc,
4085               DT_LEFT);
4086     SelectObject(hdc, hOldFont);
4087     SelectObject(hdc, hOldbmp);
4088
4089     ImageList_Add(infoPtr->dragList, hbmp, 0);
4090
4091     DeleteDC(hdc);
4092     DeleteObject(hbmp);
4093     ReleaseDC(hwtop, htopdc);
4094
4095     return (LRESULT)infoPtr->dragList;
4096 }
4097
4098 /* Selection ************************************************************/
4099
4100 static LRESULT
4101 TREEVIEW_DoSelectItem(TREEVIEW_INFO *infoPtr, INT action, HTREEITEM newSelect,
4102                       INT cause)
4103 {
4104     TREEVIEW_ITEM *prevSelect;
4105     RECT rcFocused;
4106
4107     assert(newSelect == NULL || TREEVIEW_ValidItem(infoPtr, newSelect));
4108
4109     TRACE("Entering item %p (%s), flag %x, cause %x, state %d\n",
4110           newSelect, TREEVIEW_ItemName(newSelect), action, cause,
4111           newSelect ? newSelect->state : 0);
4112
4113     /* reset and redraw focusedItem if focusedItem was set so we don't */
4114     /* have to worry about the previously focused item when we set a new one */
4115     if(infoPtr->focusedItem)
4116     {
4117         rcFocused = (infoPtr->focusedItem)->rect;
4118         infoPtr->focusedItem = 0;
4119         InvalidateRect(infoPtr->hwnd, &rcFocused, TRUE);
4120     }
4121
4122     switch (action)
4123     {
4124     case TVGN_CARET:
4125         prevSelect = infoPtr->selectedItem;
4126
4127         if (prevSelect == newSelect)
4128             return FALSE;
4129
4130         if (TREEVIEW_SendTreeviewNotify(infoPtr,
4131                                         TVN_SELCHANGINGW,
4132                                         cause,
4133                                         TVIF_HANDLE | TVIF_STATE | TVIF_PARAM,
4134                                         prevSelect,
4135                                         newSelect))
4136             return FALSE;
4137
4138         if (prevSelect)
4139             prevSelect->state &= ~TVIS_SELECTED;
4140         if (newSelect)
4141             newSelect->state |= TVIS_SELECTED;
4142
4143         infoPtr->selectedItem = newSelect;
4144
4145         TREEVIEW_EnsureVisible(infoPtr, infoPtr->selectedItem, FALSE);
4146
4147         TREEVIEW_SendTreeviewNotify(infoPtr,
4148                                     TVN_SELCHANGEDW,
4149                                     cause,
4150                                     TVIF_HANDLE | TVIF_STATE | TVIF_PARAM,
4151                                     prevSelect,
4152                                     newSelect);
4153         TREEVIEW_Invalidate(infoPtr, prevSelect);
4154         TREEVIEW_Invalidate(infoPtr, newSelect);
4155         break;
4156
4157     case TVGN_DROPHILITE:
4158         prevSelect = infoPtr->dropItem;
4159
4160         if (prevSelect)
4161             prevSelect->state &= ~TVIS_DROPHILITED;
4162
4163         infoPtr->dropItem = newSelect;
4164
4165         if (newSelect)
4166             newSelect->state |= TVIS_DROPHILITED;
4167
4168         TREEVIEW_Invalidate(infoPtr, prevSelect);
4169         TREEVIEW_Invalidate(infoPtr, newSelect);
4170         break;
4171
4172     case TVGN_FIRSTVISIBLE:
4173         TREEVIEW_EnsureVisible(infoPtr, newSelect, FALSE);
4174         TREEVIEW_SetFirstVisible(infoPtr, newSelect, TRUE);
4175         TREEVIEW_Invalidate(infoPtr, NULL);
4176         break;
4177     }
4178
4179     TRACE("Leaving state %d\n", newSelect ? newSelect->state : 0);
4180     return TRUE;
4181 }
4182
4183 /* FIXME: handle NM_KILLFOCUS etc */
4184 static LRESULT
4185 TREEVIEW_SelectItem(TREEVIEW_INFO *infoPtr, INT wParam, HTREEITEM item)
4186 {
4187     if (item != NULL && !TREEVIEW_ValidItem(infoPtr, item))
4188         return FALSE;
4189
4190     TRACE("%p (%s) %d\n", item, TREEVIEW_ItemName(item), wParam);
4191
4192     if (!TREEVIEW_DoSelectItem(infoPtr, wParam, item, TVC_UNKNOWN))
4193         return FALSE;
4194
4195     return TRUE;
4196 }
4197
4198 /*************************************************************************
4199  *              TREEVIEW_ProcessLetterKeys
4200  *
4201  *  Processes keyboard messages generated by pressing the letter keys
4202  *  on the keyboard.
4203  *  What this does is perform a case insensitive search from the
4204  *  current position with the following quirks:
4205  *  - If two chars or more are pressed in quick succession we search
4206  *    for the corresponding string (e.g. 'abc').
4207  *  - If there is a delay we wipe away the current search string and
4208  *    restart with just that char.
4209  *  - If the user keeps pressing the same character, whether slowly or
4210  *    fast, so that the search string is entirely composed of this
4211  *    character ('aaaaa' for instance), then we search for first item
4212  *    that starting with that character.
4213  *  - If the user types the above character in quick succession, then
4214  *    we must also search for the corresponding string ('aaaaa'), and
4215  *    go to that string if there is a match.
4216  *
4217  * RETURNS
4218  *
4219  *  Zero.
4220  *
4221  * BUGS
4222  *
4223  *  - The current implementation has a list of characters it will
4224  *    accept and it ignores averything else. In particular it will
4225  *    ignore accentuated characters which seems to match what
4226  *    Windows does. But I'm not sure it makes sense to follow
4227  *    Windows there.
4228  *  - We don't sound a beep when the search fails.
4229  *  - The search should start from the focused item, not from the selected
4230  *    item. One reason for this is to allow for multiple selections in trees.
4231  *    But currently infoPtr->focusedItem does not seem very usable.
4232  *
4233  * SEE ALSO
4234  *
4235  *  TREEVIEW_ProcessLetterKeys
4236  */
4237 static INT TREEVIEW_ProcessLetterKeys(
4238     HWND hwnd, /* handle to the window */
4239     WPARAM charCode, /* the character code, the actual character */
4240     LPARAM keyData /* key data */
4241     )
4242 {
4243     TREEVIEW_INFO *infoPtr;
4244     HTREEITEM nItem;
4245     HTREEITEM endidx,idx;
4246     TVITEMEXA item;
4247     CHAR buffer[MAX_PATH];
4248     DWORD timestamp,elapsed;
4249
4250     /* simple parameter checking */
4251     if (!hwnd || !charCode || !keyData)
4252         return 0;
4253
4254     infoPtr=(TREEVIEW_INFO*)GetWindowLongA(hwnd, 0);
4255     if (!infoPtr)
4256         return 0;
4257
4258     /* only allow the valid WM_CHARs through */
4259     if (!isalnum(charCode) &&
4260         charCode != '.' && charCode != '`' && charCode != '!' &&
4261         charCode != '@' && charCode != '#' && charCode != '$' &&
4262         charCode != '%' && charCode != '^' && charCode != '&' &&
4263         charCode != '*' && charCode != '(' && charCode != ')' &&
4264         charCode != '-' && charCode != '_' && charCode != '+' &&
4265         charCode != '=' && charCode != '\\'&& charCode != ']' &&
4266         charCode != '}' && charCode != '[' && charCode != '{' &&
4267         charCode != '/' && charCode != '?' && charCode != '>' &&
4268         charCode != '<' && charCode != ',' && charCode != '~')
4269         return 0;
4270
4271     /* compute how much time elapsed since last keypress */
4272     timestamp = GetTickCount();
4273     if (timestamp > infoPtr->lastKeyPressTimestamp) {
4274         elapsed=timestamp-infoPtr->lastKeyPressTimestamp;
4275     } else {
4276         elapsed=infoPtr->lastKeyPressTimestamp-timestamp;
4277     }
4278
4279     /* update the search parameters */
4280     infoPtr->lastKeyPressTimestamp=timestamp;
4281     if (elapsed < KEY_DELAY) {
4282         if (infoPtr->nSearchParamLength < sizeof(infoPtr->szSearchParam)) {
4283             infoPtr->szSearchParam[infoPtr->nSearchParamLength++]=charCode;
4284         }
4285         if (infoPtr->charCode != charCode) {
4286             infoPtr->charCode=charCode=0;
4287         }
4288     } else {
4289         infoPtr->charCode=charCode;
4290         infoPtr->szSearchParam[0]=charCode;
4291         infoPtr->nSearchParamLength=1;
4292         /* Redundant with the 1 char string */
4293         charCode=0;
4294     }
4295
4296     /* and search from the current position */
4297     nItem=NULL;
4298     if (infoPtr->selectedItem != NULL) {
4299         endidx=infoPtr->selectedItem;
4300         /* if looking for single character match,
4301          * then we must always move forward
4302          */
4303         if (infoPtr->nSearchParamLength == 1)
4304             idx=TREEVIEW_GetNextListItem(infoPtr,endidx);
4305         else
4306             idx=endidx;
4307     } else {
4308         endidx=NULL;
4309         idx=infoPtr->root->firstChild;
4310     }
4311     do {
4312         if (idx == NULL) {
4313             if (endidx == NULL)
4314                 break;
4315             idx=infoPtr->root->firstChild;
4316         }
4317
4318         /* get item */
4319         ZeroMemory(&item, sizeof(item));
4320         item.mask = TVIF_TEXT;
4321         item.hItem = idx;
4322         item.pszText = buffer;
4323         item.cchTextMax = sizeof(buffer);
4324         TREEVIEW_GetItemA( infoPtr, &item );
4325
4326         /* check for a match */
4327         if (strncasecmp(item.pszText,infoPtr->szSearchParam,infoPtr->nSearchParamLength) == 0) {
4328             nItem=idx;
4329             break;
4330         } else if ( (charCode != 0) && (nItem == NULL) &&
4331                     (nItem != infoPtr->selectedItem) &&
4332                     (strncasecmp(item.pszText,infoPtr->szSearchParam,1) == 0) ) {
4333             /* This would work but we must keep looking for a longer match */
4334             nItem=idx;
4335         }
4336         idx=TREEVIEW_GetNextListItem(infoPtr,idx);
4337     } while (idx != endidx);
4338
4339     if (nItem != NULL) {
4340         if (TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, nItem, TVC_BYKEYBOARD)) {
4341             TREEVIEW_EnsureVisible(infoPtr, nItem, FALSE);
4342         }
4343     }
4344
4345     return 0;
4346 }
4347
4348 /* Scrolling ************************************************************/
4349
4350 static LRESULT
4351 TREEVIEW_EnsureVisible(TREEVIEW_INFO *infoPtr, HTREEITEM item, BOOL bHScroll)
4352 {
4353     HTREEITEM newFirstVisible = NULL;
4354     int visible_pos;
4355
4356     if (!TREEVIEW_ValidItem(infoPtr, item))
4357         return FALSE;
4358
4359     if (!ISVISIBLE(item))
4360     {
4361         /* Expand parents as necessary. */
4362         HTREEITEM parent;
4363
4364         /* see if we are trying to ensure that root is vislble */
4365         if((item != infoPtr->root) && TREEVIEW_ValidItem(infoPtr, item))
4366           parent = item->parent;
4367         else
4368           parent = item; /* this item is the topmost item */
4369
4370         while (parent != infoPtr->root)
4371         {
4372             if (!(parent->state & TVIS_EXPANDED))
4373                 TREEVIEW_Expand(infoPtr, parent, FALSE, FALSE);
4374
4375             parent = parent->parent;
4376         }
4377     }
4378
4379     TRACE("%p (%s) %ld - %ld\n", item, TREEVIEW_ItemName(item), item->visibleOrder,
4380           infoPtr->firstVisible->visibleOrder);
4381
4382     visible_pos = item->visibleOrder - infoPtr->firstVisible->visibleOrder;
4383
4384     if (visible_pos < 0)
4385     {
4386         /* item is before the start of the list: put it at the top. */
4387         newFirstVisible = item;
4388     }
4389     else if (visible_pos >= TREEVIEW_GetVisibleCount(infoPtr)
4390              /* Sometimes, before we are displayed, GVC is 0, causing us to
4391               * spuriously scroll up. */
4392              && visible_pos > 0)
4393     {
4394         /* item is past the end of the list. */
4395         int scroll = visible_pos - TREEVIEW_GetVisibleCount(infoPtr);
4396
4397         newFirstVisible = TREEVIEW_GetListItem(infoPtr, infoPtr->firstVisible,
4398                                                scroll + 1);
4399     }
4400
4401     if (bHScroll)
4402     {
4403         /* Scroll window so item's text is visible as much as possible */
4404         /* Calculation of amount of extra space is taken from EditLabel code */
4405         INT pos, x;
4406         TEXTMETRICA textMetric;
4407         HDC hdc = GetWindowDC(infoPtr->hwnd);
4408
4409         x = item->textWidth;
4410
4411         GetTextMetricsA(hdc, &textMetric);
4412         ReleaseDC(infoPtr->hwnd, hdc);
4413
4414         x += (textMetric.tmMaxCharWidth * 2);
4415         x = max(x, textMetric.tmMaxCharWidth * 3);
4416
4417         if (item->textOffset < 0)
4418            pos = item->textOffset;
4419         else if (item->textOffset + x > infoPtr->clientWidth)
4420         {
4421            if (x > infoPtr->clientWidth)
4422               pos = item->textOffset;
4423            else
4424               pos = item->textOffset + x - infoPtr->clientWidth;
4425         }
4426         else
4427            pos = 0;
4428
4429         TREEVIEW_HScroll(infoPtr, MAKEWPARAM(SB_THUMBPOSITION, infoPtr->scrollX + pos));
4430     }
4431
4432     if (newFirstVisible != NULL && newFirstVisible != infoPtr->firstVisible)
4433     {
4434         TREEVIEW_SetFirstVisible(infoPtr, newFirstVisible, TRUE);
4435
4436         return TRUE;
4437     }
4438
4439     return FALSE;
4440 }
4441
4442 static VOID
4443 TREEVIEW_SetFirstVisible(TREEVIEW_INFO *infoPtr,
4444                          TREEVIEW_ITEM *newFirstVisible,
4445                          BOOL bUpdateScrollPos)
4446 {
4447     int gap_size;
4448
4449     TRACE("%p: %s\n", newFirstVisible, TREEVIEW_ItemName(newFirstVisible));
4450
4451     if (newFirstVisible != NULL)
4452     {
4453         /* Prevent an empty gap from appearing at the bottom... */
4454         gap_size = TREEVIEW_GetVisibleCount(infoPtr)
4455             - infoPtr->maxVisibleOrder + newFirstVisible->visibleOrder;
4456
4457         if (gap_size > 0)
4458         {
4459             newFirstVisible = TREEVIEW_GetListItem(infoPtr, newFirstVisible,
4460                                                    -gap_size);
4461
4462             /* ... unless we just don't have enough items. */
4463             if (newFirstVisible == NULL)
4464                 newFirstVisible = infoPtr->root->firstChild;
4465         }
4466     }
4467
4468     if (infoPtr->firstVisible != newFirstVisible)
4469     {
4470         if (infoPtr->firstVisible == NULL || newFirstVisible == NULL)
4471         {
4472             infoPtr->firstVisible = newFirstVisible;
4473             TREEVIEW_Invalidate(infoPtr, NULL);
4474         }
4475         else
4476         {
4477             TREEVIEW_ITEM *item;
4478             int scroll = infoPtr->uItemHeight *
4479                          (infoPtr->firstVisible->visibleOrder
4480                           - newFirstVisible->visibleOrder);
4481
4482             infoPtr->firstVisible = newFirstVisible;
4483
4484             for (item = infoPtr->root->firstChild; item != NULL;
4485                  item = TREEVIEW_GetNextListItem(infoPtr, item))
4486             {
4487                item->rect.top += scroll;
4488                item->rect.bottom += scroll;
4489             }
4490
4491             if (bUpdateScrollPos)
4492                 SetScrollPos(infoPtr->hwnd, SB_VERT,
4493                               newFirstVisible->visibleOrder, TRUE);
4494
4495             ScrollWindow(infoPtr->hwnd, 0, scroll, NULL, NULL);
4496             UpdateWindow(infoPtr->hwnd);
4497         }
4498     }
4499 }
4500
4501 /************************************************************************
4502  * VScroll is always in units of visible items. i.e. we always have a
4503  * visible item aligned to the top of the control. (Unless we have no
4504  * items at all.)
4505  */
4506 static LRESULT
4507 TREEVIEW_VScroll(TREEVIEW_INFO *infoPtr, WPARAM wParam)
4508 {
4509     TREEVIEW_ITEM *oldFirstVisible = infoPtr->firstVisible;
4510     TREEVIEW_ITEM *newFirstVisible = NULL;
4511
4512     int nScrollCode = LOWORD(wParam);
4513
4514     TRACE("wp %x\n", wParam);
4515
4516     if (!(infoPtr->uInternalStatus & TV_VSCROLL))
4517         return 0;
4518
4519     if (infoPtr->hwndEdit)
4520         SetFocus(infoPtr->hwnd);
4521
4522     if (!oldFirstVisible)
4523     {
4524         assert(infoPtr->root->firstChild == NULL);
4525         return 0;
4526     }
4527
4528     switch (nScrollCode)
4529     {
4530     case SB_TOP:
4531         newFirstVisible = infoPtr->root->firstChild;
4532         break;
4533
4534     case SB_BOTTOM:
4535         newFirstVisible = TREEVIEW_GetLastListItem(infoPtr, infoPtr->root);
4536         break;
4537
4538     case SB_LINEUP:
4539         newFirstVisible = TREEVIEW_GetPrevListItem(infoPtr, oldFirstVisible);
4540         break;
4541
4542     case SB_LINEDOWN:
4543         newFirstVisible = TREEVIEW_GetNextListItem(infoPtr, oldFirstVisible);
4544         break;
4545
4546     case SB_PAGEUP:
4547         newFirstVisible = TREEVIEW_GetListItem(infoPtr, oldFirstVisible,
4548                                                -max(1, TREEVIEW_GetVisibleCount(infoPtr)));
4549         break;
4550
4551     case SB_PAGEDOWN:
4552         newFirstVisible = TREEVIEW_GetListItem(infoPtr, oldFirstVisible,
4553                                                max(1, TREEVIEW_GetVisibleCount(infoPtr)));
4554         break;
4555
4556     case SB_THUMBTRACK:
4557     case SB_THUMBPOSITION:
4558         newFirstVisible = TREEVIEW_GetListItem(infoPtr,
4559                                                infoPtr->root->firstChild,
4560                                                (LONG)(SHORT)HIWORD(wParam));
4561         break;
4562
4563     case SB_ENDSCROLL:
4564         return 0;
4565     }
4566
4567     if (newFirstVisible != NULL)
4568     {
4569         if (newFirstVisible != oldFirstVisible)
4570             TREEVIEW_SetFirstVisible(infoPtr, newFirstVisible,
4571                                   nScrollCode != SB_THUMBTRACK);
4572         else if (nScrollCode == SB_THUMBPOSITION)
4573             SetScrollPos(infoPtr->hwnd, SB_VERT,
4574                          newFirstVisible->visibleOrder, TRUE);
4575     }
4576
4577     return 0;
4578 }
4579
4580 static LRESULT
4581 TREEVIEW_HScroll(TREEVIEW_INFO *infoPtr, WPARAM wParam)
4582 {
4583     int maxWidth;
4584     int scrollX = infoPtr->scrollX;
4585     int nScrollCode = LOWORD(wParam);
4586
4587     TRACE("wp %x\n", wParam);
4588
4589     if (!(infoPtr->uInternalStatus & TV_HSCROLL))
4590         return FALSE;
4591
4592     if (infoPtr->hwndEdit)
4593         SetFocus(infoPtr->hwnd);
4594
4595     maxWidth = infoPtr->treeWidth - infoPtr->clientWidth;
4596     /* shall never occur */
4597     if (maxWidth <= 0)
4598     {
4599        scrollX = 0;
4600        goto scroll;
4601     }
4602
4603     switch (nScrollCode)
4604     {
4605     case SB_LINELEFT:
4606         scrollX -= infoPtr->uItemHeight;
4607         break;
4608     case SB_LINERIGHT:
4609         scrollX += infoPtr->uItemHeight;
4610         break;
4611     case SB_PAGELEFT:
4612         scrollX -= infoPtr->clientWidth;
4613         break;
4614     case SB_PAGERIGHT:
4615         scrollX += infoPtr->clientWidth;
4616         break;
4617
4618     case SB_THUMBTRACK:
4619     case SB_THUMBPOSITION:
4620         scrollX = (int)(SHORT)HIWORD(wParam);
4621         break;
4622
4623     case SB_ENDSCROLL:
4624        return 0;
4625     }
4626
4627     if (scrollX > maxWidth)
4628         scrollX = maxWidth;
4629     else if (scrollX < 0)
4630         scrollX = 0;
4631
4632 scroll:
4633     if (scrollX != infoPtr->scrollX)
4634     {
4635         TREEVIEW_ITEM *item;
4636         LONG scroll_pixels = infoPtr->scrollX - scrollX;
4637
4638         for (item = infoPtr->root->firstChild; item != NULL;
4639              item = TREEVIEW_GetNextListItem(infoPtr, item))
4640         {
4641            item->linesOffset += scroll_pixels;
4642            item->stateOffset += scroll_pixels;
4643            item->imageOffset += scroll_pixels;
4644            item->textOffset  += scroll_pixels;
4645         }
4646
4647         ScrollWindow(infoPtr->hwnd, scroll_pixels, 0, NULL, NULL);
4648         infoPtr->scrollX = scrollX;
4649         UpdateWindow(infoPtr->hwnd);
4650     }
4651
4652     if (nScrollCode != SB_THUMBTRACK)
4653        SetScrollPos(infoPtr->hwnd, SB_HORZ, scrollX, TRUE);
4654
4655     return 0;
4656 }
4657
4658 static LRESULT
4659 TREEVIEW_MouseWheel(TREEVIEW_INFO *infoPtr, WPARAM wParam)
4660 {
4661     short gcWheelDelta;
4662     UINT pulScrollLines = 3;
4663
4664     if (infoPtr->firstVisible == NULL)
4665         return TRUE;
4666
4667     SystemParametersInfoW(SPI_GETWHEELSCROLLLINES, 0, &pulScrollLines, 0);
4668
4669     gcWheelDelta = -(short)HIWORD(wParam);
4670     pulScrollLines *= (gcWheelDelta / WHEEL_DELTA);
4671
4672     if (abs(gcWheelDelta) >= WHEEL_DELTA && pulScrollLines)
4673     {
4674         int newDy = infoPtr->firstVisible->visibleOrder + pulScrollLines;
4675         int maxDy = infoPtr->maxVisibleOrder;
4676
4677         if (newDy > maxDy)
4678             newDy = maxDy;
4679
4680         if (newDy < 0)
4681             newDy = 0;
4682
4683         TREEVIEW_VScroll(infoPtr, MAKEWPARAM(SB_THUMBPOSITION, newDy));
4684     }
4685     return TRUE;
4686 }
4687
4688 /* Create/Destroy *******************************************************/
4689
4690 static LRESULT
4691 TREEVIEW_Create(HWND hwnd)
4692 {
4693     RECT rcClient;
4694     TREEVIEW_INFO *infoPtr;
4695
4696     TRACE("wnd %p, style %lx\n", hwnd, GetWindowLongA(hwnd, GWL_STYLE));
4697
4698     infoPtr = (TREEVIEW_INFO *)COMCTL32_Alloc(sizeof(TREEVIEW_INFO));
4699
4700     if (infoPtr == NULL)
4701     {
4702         ERR("could not allocate info memory!\n");
4703         return 0;
4704     }
4705
4706     SetWindowLongA(hwnd, 0, (DWORD)infoPtr);
4707
4708     infoPtr->hwnd = hwnd;
4709     infoPtr->dwStyle = GetWindowLongA(hwnd, GWL_STYLE);
4710     infoPtr->uInternalStatus = 0;
4711     infoPtr->Timer = 0;
4712     infoPtr->uNumItems = 0;
4713     infoPtr->cdmode = 0;
4714     infoPtr->uScrollTime = 300; /* milliseconds */
4715     infoPtr->bRedraw = TRUE;
4716
4717     GetClientRect(hwnd, &rcClient);
4718
4719     /* No scroll bars yet. */
4720     infoPtr->clientWidth = rcClient.right;
4721     infoPtr->clientHeight = rcClient.bottom;
4722
4723     infoPtr->treeWidth = 0;
4724     infoPtr->treeHeight = 0;
4725
4726     infoPtr->uIndent = 19;
4727     infoPtr->selectedItem = 0;
4728     infoPtr->focusedItem = 0;
4729     /* hotItem? */
4730     infoPtr->firstVisible = 0;
4731     infoPtr->maxVisibleOrder = 0;
4732     infoPtr->dropItem = 0;
4733     infoPtr->insertMarkItem = 0;
4734     infoPtr->insertBeforeorAfter = 0;
4735     /* dragList */
4736
4737     infoPtr->scrollX = 0;
4738
4739     infoPtr->clrBk = GetSysColor(COLOR_WINDOW);
4740     infoPtr->clrText = -1;      /* use system color */
4741     infoPtr->clrLine = RGB(128, 128, 128);
4742     infoPtr->clrInsertMark = GetSysColor(COLOR_BTNTEXT);
4743
4744     /* hwndToolTip */
4745
4746     infoPtr->hwndEdit = 0;
4747     infoPtr->wpEditOrig = NULL;
4748     infoPtr->bIgnoreEditKillFocus = FALSE;
4749     infoPtr->bLabelChanged = FALSE;
4750
4751     infoPtr->himlNormal = NULL;
4752     infoPtr->himlState = NULL;
4753     infoPtr->normalImageWidth = 0;
4754     infoPtr->normalImageHeight = 0;
4755     infoPtr->stateImageWidth = 0;
4756     infoPtr->stateImageHeight = 0;
4757
4758     infoPtr->items = DPA_Create(16);
4759
4760     infoPtr->hFont = GetStockObject(DEFAULT_GUI_FONT);
4761     infoPtr->hBoldFont = TREEVIEW_CreateBoldFont(infoPtr->hFont);
4762
4763     infoPtr->uItemHeight = TREEVIEW_NaturalHeight(infoPtr);
4764
4765     infoPtr->root = TREEVIEW_AllocateItem(infoPtr);
4766     infoPtr->root->state = TVIS_EXPANDED;
4767     infoPtr->root->iLevel = -1;
4768     infoPtr->root->visibleOrder = -1;
4769
4770     infoPtr->hwndNotify = GetParent(hwnd);
4771 #if 0
4772     infoPtr->bTransparent = ( GetWindowLongA( hwnd, GWL_STYLE) & TBSTYLE_FLAT);
4773 #endif
4774
4775     infoPtr->hwndToolTip = 0;
4776
4777     infoPtr->bUnicode = IsWindowUnicode (hwnd);
4778
4779     /* Determine what type of notify should be issued */
4780     /* sets infoPtr->bNtfUnicode */
4781     TREEVIEW_NotifyFormat(infoPtr, infoPtr->hwndNotify, NF_REQUERY);
4782
4783     if (!(infoPtr->dwStyle & TVS_NOTOOLTIPS))
4784         infoPtr->hwndToolTip = COMCTL32_CreateToolTip(hwnd);
4785
4786     if (infoPtr->dwStyle & TVS_CHECKBOXES)
4787     {
4788         RECT rc;
4789         HBITMAP hbm, hbmOld;
4790         HDC hdc;
4791         int nIndex;
4792
4793         infoPtr->himlState =
4794             ImageList_Create(16, 16, ILC_COLOR | ILC_MASK, 3, 0);
4795
4796         hdc = CreateCompatibleDC(0);
4797         hbm = CreateCompatibleBitmap(hdc, 48, 16);
4798         hbmOld = SelectObject(hdc, hbm);
4799
4800         rc.left  = 0;   rc.top    = 0;
4801         rc.right = 48;  rc.bottom = 16;
4802         FillRect(hdc, &rc, (HBRUSH)(COLOR_WINDOW+1));
4803
4804         rc.left  = 18;   rc.top    = 2;
4805         rc.right = 30;   rc.bottom = 14;
4806         DrawFrameControl(hdc, &rc, DFC_BUTTON,
4807                           DFCS_BUTTONCHECK|DFCS_FLAT);
4808
4809         rc.left  = 34;   rc.right  = 46;
4810         DrawFrameControl(hdc, &rc, DFC_BUTTON,
4811                           DFCS_BUTTONCHECK|DFCS_FLAT|DFCS_CHECKED);
4812
4813         nIndex = ImageList_AddMasked(infoPtr->himlState, hbm,
4814                                       GetSysColor(COLOR_WINDOW));
4815         TRACE("chckbox index %d\n", nIndex);
4816         SelectObject(hdc, hbmOld);
4817         DeleteObject(hbm);
4818         DeleteDC(hdc);
4819
4820         infoPtr->stateImageWidth = 16;
4821         infoPtr->stateImageHeight = 16;
4822     }
4823     return 0;
4824 }
4825
4826
4827 static LRESULT
4828 TREEVIEW_Destroy(TREEVIEW_INFO *infoPtr)
4829 {
4830     TRACE("\n");
4831
4832     TREEVIEW_RemoveTree(infoPtr);
4833
4834     /* tool tip is automatically destroyed: we are its owner */
4835
4836     /* Restore original wndproc */
4837     if (infoPtr->hwndEdit)
4838         SetWindowLongA(infoPtr->hwndEdit, GWL_WNDPROC,
4839                        (LONG)infoPtr->wpEditOrig);
4840
4841     /* Deassociate treeview from the window before doing anything drastic. */
4842     SetWindowLongA(infoPtr->hwnd, 0, (LONG)NULL);
4843
4844     DeleteObject(infoPtr->hBoldFont);
4845     COMCTL32_Free(infoPtr);
4846
4847     return 0;
4848 }
4849
4850 /* Miscellaneous Messages ***********************************************/
4851
4852 static LRESULT
4853 TREEVIEW_ScrollKeyDown(TREEVIEW_INFO *infoPtr, WPARAM key)
4854 {
4855     static const struct
4856     {
4857         unsigned char code;
4858     }
4859     scroll[] =
4860     {
4861 #define SCROLL_ENTRY(dir, code) { ((dir) << 7) | (code) }
4862         SCROLL_ENTRY(SB_VERT, SB_PAGEUP),       /* VK_PRIOR */
4863         SCROLL_ENTRY(SB_VERT, SB_PAGEDOWN),     /* VK_NEXT */
4864         SCROLL_ENTRY(SB_VERT, SB_BOTTOM),       /* VK_END */
4865         SCROLL_ENTRY(SB_VERT, SB_TOP),          /* VK_HOME */
4866         SCROLL_ENTRY(SB_HORZ, SB_LINEUP),       /* VK_LEFT */
4867         SCROLL_ENTRY(SB_VERT, SB_LINEUP),       /* VK_UP */
4868         SCROLL_ENTRY(SB_HORZ, SB_LINEDOWN),     /* VK_RIGHT */
4869         SCROLL_ENTRY(SB_VERT, SB_LINEDOWN)      /* VK_DOWN */
4870 #undef SCROLL_ENTRY
4871     };
4872
4873     if (key >= VK_PRIOR && key <= VK_DOWN)
4874     {
4875         unsigned char code = scroll[key - VK_PRIOR].code;
4876
4877         (((code & (1 << 7)) == (SB_HORZ << 7))
4878          ? TREEVIEW_HScroll
4879          : TREEVIEW_VScroll)(infoPtr, code & 0x7F);
4880     }
4881
4882     return 0;
4883 }
4884
4885 /************************************************************************
4886  *        TREEVIEW_KeyDown
4887  *
4888  * VK_UP       Move selection to the previous non-hidden item.
4889  * VK_DOWN     Move selection to the next non-hidden item.
4890  * VK_HOME     Move selection to the first item.
4891  * VK_END      Move selection to the last item.
4892  * VK_LEFT     If expanded then collapse, otherwise move to parent.
4893  * VK_RIGHT    If collapsed then expand, otherwise move to first child.
4894  * VK_ADD      Expand.
4895  * VK_SUBTRACT Collapse.
4896  * VK_MULTIPLY Expand all.
4897  * VK_PRIOR    Move up GetVisibleCount items.
4898  * VK_NEXT     Move down GetVisibleCount items.
4899  * VK_BACK     Move to parent.
4900  * CTRL-Left,Right,Up,Down,PgUp,PgDown,Home,End: Scroll without changing selection
4901  */
4902 static LRESULT
4903 TREEVIEW_KeyDown(TREEVIEW_INFO *infoPtr, WPARAM wParam)
4904 {
4905     /* If it is non-NULL and different, it will be selected and visible. */
4906     TREEVIEW_ITEM *newSelection = NULL;
4907
4908     TREEVIEW_ITEM *prevItem = infoPtr->selectedItem;
4909
4910     TRACE("%x\n", wParam);
4911
4912     if (prevItem == NULL)
4913         return FALSE;
4914
4915     if (GetAsyncKeyState(VK_CONTROL) & 0x8000)
4916         return TREEVIEW_ScrollKeyDown(infoPtr, wParam);
4917
4918     switch (wParam)
4919     {
4920     case VK_UP:
4921         newSelection = TREEVIEW_GetPrevListItem(infoPtr, prevItem);
4922         if (!newSelection)
4923             newSelection = infoPtr->root->firstChild;
4924         break;
4925
4926     case VK_DOWN:
4927         newSelection = TREEVIEW_GetNextListItem(infoPtr, prevItem);
4928         break;
4929
4930     case VK_HOME:
4931         newSelection = infoPtr->root->firstChild;
4932         break;
4933
4934     case VK_END:
4935         newSelection = TREEVIEW_GetLastListItem(infoPtr, infoPtr->root);
4936         break;
4937
4938     case VK_LEFT:
4939         if (prevItem->state & TVIS_EXPANDED)
4940         {
4941             TREEVIEW_Collapse(infoPtr, prevItem, FALSE, TRUE);
4942         }
4943         else if (prevItem->parent != infoPtr->root)
4944         {
4945             newSelection = prevItem->parent;
4946         }
4947         break;
4948
4949     case VK_RIGHT:
4950         if (TREEVIEW_HasChildren(infoPtr, prevItem))
4951         {
4952             if (!(prevItem->state & TVIS_EXPANDED))
4953                 TREEVIEW_Expand(infoPtr, prevItem, FALSE, TRUE);
4954             else
4955             {
4956                 newSelection = prevItem->firstChild;
4957             }
4958         }
4959
4960         break;
4961
4962     case VK_MULTIPLY:
4963         TREEVIEW_ExpandAll(infoPtr, prevItem);
4964         break;
4965
4966     case VK_ADD:
4967         if (!(prevItem->state & TVIS_EXPANDED))
4968             TREEVIEW_Expand(infoPtr, prevItem, FALSE, TRUE);
4969         break;
4970
4971     case VK_SUBTRACT:
4972         if (prevItem->state & TVIS_EXPANDED)
4973             TREEVIEW_Collapse(infoPtr, prevItem, FALSE, TRUE);
4974         break;
4975
4976     case VK_PRIOR:
4977         newSelection
4978             = TREEVIEW_GetListItem(infoPtr, prevItem,
4979                                    -TREEVIEW_GetVisibleCount(infoPtr));
4980         break;
4981
4982     case VK_NEXT:
4983         newSelection
4984             = TREEVIEW_GetListItem(infoPtr, prevItem,
4985                                    TREEVIEW_GetVisibleCount(infoPtr));
4986         break;
4987
4988     case VK_BACK:
4989         newSelection = prevItem->parent;
4990         if (newSelection == infoPtr->root)
4991             newSelection = NULL;
4992         break;
4993
4994     case VK_SPACE:
4995         if (infoPtr->dwStyle & TVS_CHECKBOXES)
4996             TREEVIEW_ToggleItemState(infoPtr, prevItem);
4997         break;
4998     }
4999
5000     if (newSelection && newSelection != prevItem)
5001     {
5002         if (TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, newSelection,
5003                                   TVC_BYKEYBOARD))
5004         {
5005             TREEVIEW_EnsureVisible(infoPtr, newSelection, FALSE);
5006         }
5007     }
5008
5009     return FALSE;
5010 }
5011
5012 static LRESULT
5013 TREEVIEW_Notify(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
5014 {
5015     LPNMHDR lpnmh = (LPNMHDR)lParam;
5016
5017     if (lpnmh->code == PGN_CALCSIZE) {
5018         LPNMPGCALCSIZE lppgc = (LPNMPGCALCSIZE)lParam;
5019
5020         if (lppgc->dwFlag == PGF_CALCWIDTH) {
5021             lppgc->iWidth = infoPtr->treeWidth;
5022             TRACE("got PGN_CALCSIZE, returning horz size = %ld, client=%ld\n",
5023                   infoPtr->treeWidth, infoPtr->clientWidth);
5024         }
5025         else {
5026             lppgc->iHeight = infoPtr->treeHeight;
5027             TRACE("got PGN_CALCSIZE, returning vert size = %ld, client=%ld\n",
5028                   infoPtr->treeHeight, infoPtr->clientHeight);
5029         }
5030         return 0;
5031     }
5032     return DefWindowProcA(infoPtr->hwnd, WM_NOTIFY, wParam, lParam);
5033 }
5034
5035 static INT TREEVIEW_NotifyFormat (TREEVIEW_INFO *infoPtr, HWND hwndFrom, UINT nCommand)
5036 {
5037     INT format;
5038
5039     TRACE("(hwndFrom=%p, nCommand=%d)\n", hwndFrom, nCommand);
5040
5041     if (nCommand != NF_REQUERY) return 0;
5042
5043     format = SendMessageW(hwndFrom, WM_NOTIFYFORMAT, (WPARAM)infoPtr->hwnd, NF_QUERY);
5044     TRACE("format=%d\n", format);
5045
5046     if (format != NFR_ANSI && format != NFR_UNICODE) return 0;
5047
5048     infoPtr->bNtfUnicode = (format == NFR_UNICODE);
5049
5050     return format;
5051 }
5052
5053 static LRESULT
5054 TREEVIEW_Size(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
5055 {
5056     if (wParam == SIZE_RESTORED)
5057     {
5058         infoPtr->clientWidth  = SLOWORD(lParam);
5059         infoPtr->clientHeight = SHIWORD(lParam);
5060
5061         TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
5062         TREEVIEW_SetFirstVisible(infoPtr, infoPtr->firstVisible, TRUE);
5063         TREEVIEW_UpdateScrollBars(infoPtr);
5064     }
5065     else
5066     {
5067         FIXME("WM_SIZE flag %x %lx not handled\n", wParam, lParam);
5068     }
5069
5070     TREEVIEW_Invalidate(infoPtr, NULL);
5071     return 0;
5072 }
5073
5074 static LRESULT
5075 TREEVIEW_StyleChanged(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
5076 {
5077     TRACE("(%x %lx)\n", wParam, lParam);
5078
5079     if (wParam == GWL_STYLE)
5080     {
5081        DWORD dwNewStyle = ((LPSTYLESTRUCT)lParam)->styleNew;
5082
5083        /* we have to take special care about tooltips */
5084        if ((infoPtr->dwStyle ^ dwNewStyle) & TVS_NOTOOLTIPS)
5085        {
5086           if (infoPtr->dwStyle & TVS_NOTOOLTIPS)
5087           {
5088               infoPtr->hwndToolTip = COMCTL32_CreateToolTip(infoPtr->hwnd);
5089               TRACE("\n");
5090           }
5091           else
5092           {
5093              DestroyWindow(infoPtr->hwndToolTip);
5094              infoPtr->hwndToolTip = 0;
5095           }
5096        }
5097
5098        infoPtr->dwStyle = dwNewStyle;
5099     }
5100
5101     TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
5102     TREEVIEW_UpdateScrollBars(infoPtr);
5103     TREEVIEW_Invalidate(infoPtr, NULL);
5104
5105     return 0;
5106 }
5107
5108 static LRESULT
5109 TREEVIEW_SetFocus(TREEVIEW_INFO *infoPtr)
5110 {
5111     TRACE("\n");
5112
5113     if (!infoPtr->selectedItem)
5114     {
5115         TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, infoPtr->firstVisible,
5116                               TVC_UNKNOWN);
5117     }
5118
5119     TREEVIEW_SendSimpleNotify(infoPtr, NM_SETFOCUS);
5120     TREEVIEW_Invalidate(infoPtr, infoPtr->selectedItem);
5121     return 0;
5122 }
5123
5124 static LRESULT
5125 TREEVIEW_KillFocus(TREEVIEW_INFO *infoPtr)
5126 {
5127     TRACE("\n");
5128
5129     TREEVIEW_SendSimpleNotify(infoPtr, NM_KILLFOCUS);
5130     TREEVIEW_Invalidate(infoPtr, infoPtr->selectedItem);
5131     return 0;
5132 }
5133
5134
5135 static LRESULT WINAPI
5136 TREEVIEW_WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
5137 {
5138     TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
5139     if (infoPtr) TREEVIEW_VerifyTree(infoPtr);
5140     else
5141     {
5142         if (uMsg == WM_CREATE)
5143             TREEVIEW_Create(hwnd);
5144         else
5145             goto def;
5146     }
5147
5148     switch (uMsg)
5149     {
5150     case TVM_CREATEDRAGIMAGE:
5151         return TREEVIEW_CreateDragImage(infoPtr, wParam, lParam);
5152
5153     case TVM_DELETEITEM:
5154         return TREEVIEW_DeleteItem(infoPtr, (HTREEITEM)lParam);
5155
5156     case TVM_EDITLABELA:
5157         return (LRESULT)TREEVIEW_EditLabelA(infoPtr, (HTREEITEM)lParam);
5158
5159     case TVM_EDITLABELW:
5160         FIXME("Unimplemented msg TVM_EDITLABELW\n");
5161         return 0;
5162
5163     case TVM_ENDEDITLABELNOW:
5164         return TREEVIEW_EndEditLabelNow(infoPtr, (BOOL)wParam);
5165
5166     case TVM_ENSUREVISIBLE:
5167         return TREEVIEW_EnsureVisible(infoPtr, (HTREEITEM)lParam, TRUE);
5168
5169     case TVM_EXPAND:
5170         return TREEVIEW_ExpandMsg(infoPtr, (UINT)wParam, (HTREEITEM)lParam);
5171
5172     case TVM_GETBKCOLOR:
5173         return TREEVIEW_GetBkColor(infoPtr);
5174
5175     case TVM_GETCOUNT:
5176         return TREEVIEW_GetCount(infoPtr);
5177
5178     case TVM_GETEDITCONTROL:
5179         return TREEVIEW_GetEditControl(infoPtr);
5180
5181     case TVM_GETIMAGELIST:
5182         return TREEVIEW_GetImageList(infoPtr, wParam);
5183
5184     case TVM_GETINDENT:
5185         return TREEVIEW_GetIndent(infoPtr);
5186
5187     case TVM_GETINSERTMARKCOLOR:
5188         return TREEVIEW_GetInsertMarkColor(infoPtr);
5189
5190     case TVM_GETISEARCHSTRINGA:
5191         FIXME("Unimplemented msg TVM_GETISEARCHSTRINGA\n");
5192         return 0;
5193
5194     case TVM_GETISEARCHSTRINGW:
5195         FIXME("Unimplemented msg TVM_GETISEARCHSTRINGW\n");
5196         return 0;
5197
5198     case TVM_GETITEMA:
5199         return TREEVIEW_GetItemA(infoPtr, (LPTVITEMEXA)lParam);
5200
5201     case TVM_GETITEMW:
5202         return TREEVIEW_GetItemW(infoPtr, (LPTVITEMEXW)lParam);
5203
5204     case TVM_GETITEMHEIGHT:
5205         return TREEVIEW_GetItemHeight(infoPtr);
5206
5207     case TVM_GETITEMRECT:
5208         return TREEVIEW_GetItemRect(infoPtr, (BOOL)wParam, (LPRECT)lParam);
5209
5210     case TVM_GETITEMSTATE:
5211         return TREEVIEW_GetItemState(infoPtr, (HTREEITEM)wParam, (UINT)lParam);
5212
5213     case TVM_GETLINECOLOR:
5214         return TREEVIEW_GetLineColor(infoPtr);
5215
5216     case TVM_GETNEXTITEM:
5217         return TREEVIEW_GetNextItem(infoPtr, (UINT)wParam, (HTREEITEM)lParam);
5218
5219     case TVM_GETSCROLLTIME:
5220         return TREEVIEW_GetScrollTime(infoPtr);
5221
5222     case TVM_GETTEXTCOLOR:
5223         return TREEVIEW_GetTextColor(infoPtr);
5224
5225     case TVM_GETTOOLTIPS:
5226         return TREEVIEW_GetToolTips(infoPtr);
5227
5228     case TVM_GETUNICODEFORMAT:
5229         FIXME("Unimplemented msg TVM_GETUNICODEFORMAT\n");
5230         return 0;
5231
5232     case TVM_GETVISIBLECOUNT:
5233         return TREEVIEW_GetVisibleCount(infoPtr);
5234
5235     case TVM_HITTEST:
5236         return TREEVIEW_HitTest(infoPtr, (LPTVHITTESTINFO)lParam);
5237
5238     case TVM_INSERTITEMA:
5239         return TREEVIEW_InsertItemA(infoPtr, lParam);
5240
5241     case TVM_INSERTITEMW:
5242         return TREEVIEW_InsertItemW(infoPtr, lParam);
5243
5244     case TVM_SELECTITEM:
5245         return TREEVIEW_SelectItem(infoPtr, (INT)wParam, (HTREEITEM)lParam);
5246
5247     case TVM_SETBKCOLOR:
5248         return TREEVIEW_SetBkColor(infoPtr, (COLORREF)lParam);
5249
5250     case TVM_SETIMAGELIST:
5251         return TREEVIEW_SetImageList(infoPtr, wParam, (HIMAGELIST)lParam);
5252
5253     case TVM_SETINDENT:
5254         return TREEVIEW_SetIndent(infoPtr, (UINT)wParam);
5255
5256     case TVM_SETINSERTMARK:
5257         return TREEVIEW_SetInsertMark(infoPtr, (BOOL)wParam, (HTREEITEM)lParam);
5258
5259     case TVM_SETINSERTMARKCOLOR:
5260         return TREEVIEW_SetInsertMarkColor(infoPtr, (COLORREF)lParam);
5261
5262     case TVM_SETITEMA:
5263         return TREEVIEW_SetItemA(infoPtr, (LPTVITEMEXA)lParam);
5264
5265     case TVM_SETITEMW:
5266     return TREEVIEW_SetItemW(infoPtr, (LPTVITEMEXW)lParam);
5267         return 0;
5268
5269     case TVM_SETLINECOLOR:
5270         return TREEVIEW_SetLineColor(infoPtr, (COLORREF)lParam);
5271
5272     case TVM_SETITEMHEIGHT:
5273         return TREEVIEW_SetItemHeight(infoPtr, (INT)(SHORT)wParam);
5274
5275     case TVM_SETSCROLLTIME:
5276         return TREEVIEW_SetScrollTime(infoPtr, (UINT)wParam);
5277
5278     case TVM_SETTEXTCOLOR:
5279         return TREEVIEW_SetTextColor(infoPtr, (COLORREF)lParam);
5280
5281     case TVM_SETTOOLTIPS:
5282         return TREEVIEW_SetToolTips(infoPtr, (HWND)wParam);
5283
5284     case TVM_SETUNICODEFORMAT:
5285         FIXME("Unimplemented msg TVM_SETUNICODEFORMAT\n");
5286         return 0;
5287
5288     case TVM_SORTCHILDREN:
5289         return TREEVIEW_SortChildren(infoPtr, wParam, lParam);
5290
5291     case TVM_SORTCHILDRENCB:
5292         return TREEVIEW_SortChildrenCB(infoPtr, wParam, (LPTVSORTCB)lParam);
5293
5294     case WM_CHAR:
5295         return TREEVIEW_ProcessLetterKeys( hwnd, wParam, lParam );
5296
5297     case WM_COMMAND:
5298         return TREEVIEW_Command(infoPtr, wParam, lParam);
5299
5300     case WM_DESTROY:
5301         return TREEVIEW_Destroy(infoPtr);
5302
5303         /* WM_ENABLE */
5304
5305     case WM_ERASEBKGND:
5306         return TREEVIEW_EraseBackground(infoPtr, (HDC)wParam);
5307
5308     case WM_GETDLGCODE:
5309         return DLGC_WANTARROWS | DLGC_WANTCHARS;
5310
5311     case WM_GETFONT:
5312         return TREEVIEW_GetFont(infoPtr);
5313
5314     case WM_HSCROLL:
5315         return TREEVIEW_HScroll(infoPtr, wParam);
5316
5317     case WM_KEYDOWN:
5318         return TREEVIEW_KeyDown(infoPtr, wParam);
5319
5320     case WM_KILLFOCUS:
5321         return TREEVIEW_KillFocus(infoPtr);
5322
5323     case WM_LBUTTONDBLCLK:
5324         return TREEVIEW_LButtonDoubleClick(infoPtr, lParam);
5325
5326     case WM_LBUTTONDOWN:
5327         return TREEVIEW_LButtonDown(infoPtr, lParam);
5328
5329         /* WM_MBUTTONDOWN */
5330
5331         /* WM_MOUSEMOVE */
5332
5333     case WM_NOTIFY:
5334         return TREEVIEW_Notify(infoPtr, wParam, lParam);
5335
5336     case WM_NOTIFYFORMAT:
5337         return TREEVIEW_NotifyFormat(infoPtr, (HWND)wParam, (UINT)lParam);
5338
5339     case WM_PAINT:
5340         return TREEVIEW_Paint(infoPtr, wParam);
5341
5342         /* WM_PRINTCLIENT */
5343
5344     case WM_RBUTTONDOWN:
5345         return TREEVIEW_RButtonDown(infoPtr, lParam);
5346
5347     case WM_SETFOCUS:
5348         return TREEVIEW_SetFocus(infoPtr);
5349
5350     case WM_SETFONT:
5351         return TREEVIEW_SetFont(infoPtr, (HFONT)wParam, (BOOL)lParam);
5352
5353     case WM_SETREDRAW:
5354         return TREEVIEW_SetRedraw(infoPtr, wParam, lParam);
5355
5356     case WM_SIZE:
5357         return TREEVIEW_Size(infoPtr, wParam, lParam);
5358
5359     case WM_STYLECHANGED:
5360         return TREEVIEW_StyleChanged(infoPtr, wParam, lParam);
5361
5362         /* WM_SYSCOLORCHANGE */
5363
5364         /* WM_SYSKEYDOWN */
5365
5366     case WM_TIMER:
5367         return TREEVIEW_HandleTimer(infoPtr, wParam);
5368
5369     case WM_VSCROLL:
5370         return TREEVIEW_VScroll(infoPtr, wParam);
5371
5372         /* WM_WININICHANGE */
5373
5374     case WM_MOUSEWHEEL:
5375         if (wParam & (MK_SHIFT | MK_CONTROL))
5376             goto def;
5377         return TREEVIEW_MouseWheel(infoPtr, wParam);
5378
5379     case WM_DRAWITEM:
5380         TRACE("drawItem\n");
5381         goto def;
5382
5383     default:
5384         /* This mostly catches MFC and Delphi messages. :( */
5385         if ((uMsg >= WM_USER) && (uMsg < WM_APP))
5386             TRACE("Unknown msg %04x wp=%08x lp=%08lx\n", uMsg, wParam, lParam);
5387 def:
5388         return DefWindowProcA(hwnd, uMsg, wParam, lParam);
5389     }
5390     return 0;
5391 }
5392
5393
5394 /* Class Registration ***************************************************/
5395
5396 VOID
5397 TREEVIEW_Register(void)
5398 {
5399     WNDCLASSA wndClass;
5400
5401     TRACE("\n");
5402
5403     ZeroMemory(&wndClass, sizeof(WNDCLASSA));
5404     wndClass.style = CS_GLOBALCLASS | CS_DBLCLKS;
5405     wndClass.lpfnWndProc = (WNDPROC)TREEVIEW_WindowProc;
5406     wndClass.cbClsExtra = 0;
5407     wndClass.cbWndExtra = sizeof(TREEVIEW_INFO *);
5408
5409     wndClass.hCursor = LoadCursorA(0, IDC_ARROWA);
5410     wndClass.hbrBackground = 0;
5411     wndClass.lpszClassName = WC_TREEVIEWA;
5412
5413     RegisterClassA(&wndClass);
5414 }
5415
5416
5417 VOID
5418 TREEVIEW_Unregister(void)
5419 {
5420     UnregisterClassA(WC_TREEVIEWA, NULL);
5421 }
5422
5423
5424 /* Tree Verification ****************************************************/
5425
5426 #ifdef NDEBUG
5427 static inline void
5428 TREEVIEW_VerifyChildren(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item);
5429
5430 static inline void TREEVIEW_VerifyItemCommon(TREEVIEW_INFO *infoPtr,
5431                                              TREEVIEW_ITEM *item)
5432 {
5433     assert(infoPtr != NULL);
5434     assert(item != NULL);
5435
5436     /* both NULL, or both non-null */
5437     assert((item->firstChild == NULL) == (item->lastChild == NULL));
5438
5439     assert(item->firstChild != item);
5440     assert(item->lastChild != item);
5441
5442     if (item->firstChild)
5443     {
5444         assert(item->firstChild->parent == item);
5445         assert(item->firstChild->prevSibling == NULL);
5446     }
5447
5448     if (item->lastChild)
5449     {
5450         assert(item->lastChild->parent == item);
5451         assert(item->lastChild->nextSibling == NULL);
5452     }
5453
5454     assert(item->nextSibling != item);
5455     if (item->nextSibling)
5456     {
5457         assert(item->nextSibling->parent == item->parent);
5458         assert(item->nextSibling->prevSibling == item);
5459     }
5460
5461     assert(item->prevSibling != item);
5462     if (item->prevSibling)
5463     {
5464         assert(item->prevSibling->parent == item->parent);
5465         assert(item->prevSibling->nextSibling == item);
5466     }
5467 }
5468
5469 static inline void
5470 TREEVIEW_VerifyItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
5471 {
5472     assert(item != NULL);
5473
5474     assert(item->parent != NULL);
5475     assert(item->parent != item);
5476     assert(item->iLevel == item->parent->iLevel + 1);
5477
5478     assert(DPA_GetPtrIndex(infoPtr->items, item) != -1);
5479
5480     TREEVIEW_VerifyItemCommon(infoPtr, item);
5481
5482     TREEVIEW_VerifyChildren(infoPtr, item);
5483 }
5484
5485 static inline void
5486 TREEVIEW_VerifyChildren(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
5487 {
5488     TREEVIEW_ITEM *child;
5489     assert(item != NULL);
5490
5491     for (child = item->firstChild; child != NULL; child = child->nextSibling)
5492         TREEVIEW_VerifyItem(infoPtr, child);
5493 }
5494
5495 static inline void
5496 TREEVIEW_VerifyRoot(TREEVIEW_INFO *infoPtr)
5497 {
5498     TREEVIEW_ITEM *root = infoPtr->root;
5499
5500     assert(root != NULL);
5501     assert(root->iLevel == -1);
5502     assert(root->parent == NULL);
5503     assert(root->prevSibling == NULL);
5504
5505     TREEVIEW_VerifyItemCommon(infoPtr, root);
5506
5507     TREEVIEW_VerifyChildren(infoPtr, root);
5508 }
5509
5510 static void
5511 TREEVIEW_VerifyTree(TREEVIEW_INFO *infoPtr)
5512 {
5513     assert(infoPtr != NULL);
5514
5515     TREEVIEW_VerifyRoot(infoPtr);
5516 }
5517 #endif