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     if (infoPtr->hotItem == item)
 992         infoPtr->hotItem = NULL;
 993     if (infoPtr->focusedItem == item)
 994         infoPtr->focusedItem = NULL;
 995     if (infoPtr->firstVisible == item)
 996         infoPtr->firstVisible = NULL;
 997     if (infoPtr->dropItem == item)
 998         infoPtr->dropItem = NULL;
 999     if (infoPtr->insertMarkItem == item)
1000         infoPtr->insertMarkItem = NULL;
1001 }
1002
1003
1004 /* Item Insertion *******************************************************/
1005
1006 /***************************************************************************
1007  * This method inserts newItem before sibling as a child of parent.
1008  * sibling can be NULL, but only if parent has no children.
1009  */
1010 static void
1011 TREEVIEW_InsertBefore(TREEVIEW_ITEM *newItem, TREEVIEW_ITEM *sibling,
1012                       TREEVIEW_ITEM *parent)
1013 {
1014     assert(newItem != NULL);
1015     assert(parent != NULL);
1016
1017     if (sibling != NULL)
1018     {
1019         assert(sibling->parent == parent);
1020
1021         if (sibling->prevSibling != NULL)
1022             sibling->prevSibling->nextSibling = newItem;
1023
1024         newItem->prevSibling = sibling->prevSibling;
1025         sibling->prevSibling = newItem;
1026     }
1027     else
1028        newItem->prevSibling = NULL;
1029
1030     newItem->nextSibling = sibling;
1031
1032     if (parent->firstChild == sibling)
1033         parent->firstChild = newItem;
1034
1035     if (parent->lastChild == NULL)
1036         parent->lastChild = newItem;
1037 }
1038
1039 /***************************************************************************
1040  * This method inserts newItem after sibling as a child of parent.
1041  * sibling can be NULL, but only if parent has no children.
1042  */
1043 static void
1044 TREEVIEW_InsertAfter(TREEVIEW_ITEM *newItem, TREEVIEW_ITEM *sibling,
1045                      TREEVIEW_ITEM *parent)
1046 {
1047     assert(newItem != NULL);
1048     assert(parent != NULL);
1049
1050     if (sibling != NULL)
1051     {
1052         assert(sibling->parent == parent);
1053
1054         if (sibling->nextSibling != NULL)
1055             sibling->nextSibling->prevSibling = newItem;
1056
1057         newItem->nextSibling = sibling->nextSibling;
1058         sibling->nextSibling = newItem;
1059     }
1060     else
1061        newItem->nextSibling = NULL;
1062
1063     newItem->prevSibling = sibling;
1064
1065     if (parent->lastChild == sibling)
1066         parent->lastChild = newItem;
1067
1068     if (parent->firstChild == NULL)
1069         parent->firstChild = newItem;
1070 }
1071
1072 static BOOL
1073 TREEVIEW_DoSetItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
1074                    const TVITEMEXA *tvItem)
1075 {
1076     UINT callbackClear = 0;
1077     UINT callbackSet = 0;
1078
1079     /* Do this first in case it fails. */
1080     if (tvItem->mask & TVIF_TEXT)
1081     {
1082         wineItem->textWidth = 0; /* force width recalculation */
1083         if (tvItem->pszText != LPSTR_TEXTCALLBACKA)
1084         {
1085             int len = lstrlenA(tvItem->pszText) + 1;
1086             LPSTR newText = COMCTL32_ReAlloc(wineItem->pszText, len);
1087
1088             if (newText == NULL) return FALSE;
1089
1090             callbackClear |= TVIF_TEXT;
1091
1092             wineItem->pszText = newText;
1093             wineItem->cchTextMax = len;
1094             lstrcpynA(wineItem->pszText, tvItem->pszText, len);
1095             TRACE("setting text %s, item %p\n",
1096                   debugstr_a(wineItem->pszText), wineItem);
1097         }
1098         else
1099         {
1100             callbackSet |= TVIF_TEXT;
1101
1102             wineItem->pszText = COMCTL32_ReAlloc(wineItem->pszText,
1103                                                  TEXT_CALLBACK_SIZE);
1104             wineItem->cchTextMax = TEXT_CALLBACK_SIZE;
1105             TRACE("setting callback, item %p\n",
1106                   wineItem);
1107         }
1108     }
1109
1110     if (tvItem->mask & TVIF_CHILDREN)
1111     {
1112         wineItem->cChildren = tvItem->cChildren;
1113
1114         if (wineItem->cChildren == I_CHILDRENCALLBACK)
1115             callbackSet |= TVIF_CHILDREN;
1116         else
1117             callbackClear |= TVIF_CHILDREN;
1118     }
1119
1120     if (tvItem->mask & TVIF_IMAGE)
1121     {
1122         wineItem->iImage = tvItem->iImage;
1123
1124         if (wineItem->iImage == I_IMAGECALLBACK)
1125             callbackSet |= TVIF_IMAGE;
1126         else
1127             callbackClear |= TVIF_IMAGE;
1128     }
1129
1130     if (tvItem->mask & TVIF_SELECTEDIMAGE)
1131     {
1132         wineItem->iSelectedImage = tvItem->iSelectedImage;
1133
1134         if (wineItem->iSelectedImage == I_IMAGECALLBACK)
1135             callbackSet |= TVIF_SELECTEDIMAGE;
1136         else
1137             callbackClear |= TVIF_SELECTEDIMAGE;
1138     }
1139
1140     if (tvItem->mask & TVIF_PARAM)
1141         wineItem->lParam = tvItem->lParam;
1142
1143     /* If the application sets TVIF_INTEGRAL without
1144      * supplying a TVITEMEX structure, it's toast. */
1145     if (tvItem->mask & TVIF_INTEGRAL)
1146         wineItem->iIntegral = tvItem->iIntegral;
1147
1148     if (tvItem->mask & TVIF_STATE)
1149     {
1150         TRACE("prevstate,state,mask:%x,%x,%x\n", wineItem->state, tvItem->state,
1151               tvItem->stateMask);
1152         wineItem->state &= ~tvItem->stateMask;
1153         wineItem->state |= (tvItem->state & tvItem->stateMask);
1154     }
1155
1156     wineItem->callbackMask |= callbackSet;
1157     wineItem->callbackMask &= ~callbackClear;
1158
1159     return TRUE;
1160 }
1161
1162 /* Note that the new item is pre-zeroed. */
1163 static LRESULT
1164 TREEVIEW_InsertItemA(TREEVIEW_INFO *infoPtr, LPARAM lParam)
1165 {
1166     const TVINSERTSTRUCTA *ptdi = (LPTVINSERTSTRUCTA) lParam;
1167     const TVITEMEXA *tvItem = &ptdi->DUMMYUNIONNAME.itemex;
1168     HTREEITEM insertAfter;
1169     TREEVIEW_ITEM *newItem, *parentItem;
1170     BOOL bTextUpdated = FALSE;
1171
1172     if (ptdi->hParent == TVI_ROOT || ptdi->hParent == 0)
1173     {
1174         parentItem = infoPtr->root;
1175     }
1176     else
1177     {
1178         parentItem = ptdi->hParent;
1179
1180         if (!TREEVIEW_ValidItem(infoPtr, parentItem))
1181         {
1182             WARN("invalid parent %p\n", parentItem);
1183             return (LRESULT)(HTREEITEM)NULL;
1184         }
1185     }
1186
1187     insertAfter = ptdi->hInsertAfter;
1188
1189     /* Validate this now for convenience. */
1190     switch ((DWORD)insertAfter)
1191     {
1192     case (DWORD)TVI_FIRST:
1193     case (DWORD)TVI_LAST:
1194     case (DWORD)TVI_SORT:
1195         break;
1196
1197     default:
1198         if (!TREEVIEW_ValidItem(infoPtr, insertAfter) ||
1199             insertAfter->parent != parentItem)
1200         {
1201             WARN("invalid insert after %p\n", insertAfter);
1202             insertAfter = TVI_LAST;
1203         }
1204     }
1205
1206     TRACE("parent %p position %p: '%s'\n", parentItem, insertAfter,
1207           (tvItem->mask & TVIF_TEXT)
1208           ? ((tvItem->pszText == LPSTR_TEXTCALLBACKA) ? "<callback>"
1209              : tvItem->pszText)
1210           : "<no label>");
1211
1212     newItem = TREEVIEW_AllocateItem(infoPtr);
1213     if (newItem == NULL)
1214         return (LRESULT)(HTREEITEM)NULL;
1215
1216     newItem->parent = parentItem;
1217     newItem->iIntegral = 1;
1218
1219     if (!TREEVIEW_DoSetItem(infoPtr, newItem, tvItem))
1220         return (LRESULT)(HTREEITEM)NULL;
1221
1222     /* After this point, nothing can fail. (Except for TVI_SORT.) */
1223
1224     infoPtr->uNumItems++;
1225
1226     switch ((DWORD)insertAfter)
1227     {
1228     case (DWORD)TVI_FIRST:
1229         {
1230            TREEVIEW_ITEM *originalFirst = parentItem->firstChild;
1231            TREEVIEW_InsertBefore(newItem, parentItem->firstChild, parentItem);
1232            if (infoPtr->firstVisible == originalFirst)
1233               TREEVIEW_SetFirstVisible(infoPtr, newItem, TRUE);
1234         }
1235         break;
1236
1237     case (DWORD)TVI_LAST:
1238         TREEVIEW_InsertAfter(newItem, parentItem->lastChild, parentItem);
1239         break;
1240
1241         /* hInsertAfter names a specific item we want to insert after */
1242     default:
1243         TREEVIEW_InsertAfter(newItem, insertAfter, insertAfter->parent);
1244         break;
1245
1246     case (DWORD)TVI_SORT:
1247         {
1248             TREEVIEW_ITEM *aChild;
1249             TREEVIEW_ITEM *previousChild = NULL;
1250             BOOL bItemInserted = FALSE;
1251
1252             aChild = parentItem->firstChild;
1253
1254             bTextUpdated = TRUE;
1255             TREEVIEW_UpdateDispInfo(infoPtr, newItem, TVIF_TEXT);
1256
1257             /* Iterate the parent children to see where we fit in */
1258             while (aChild != NULL)
1259             {
1260                 INT comp;
1261
1262                 TREEVIEW_UpdateDispInfo(infoPtr, aChild, TVIF_TEXT);
1263                 comp = lstrcmpA(newItem->pszText, aChild->pszText);
1264
1265                 if (comp < 0)   /* we are smaller than the current one */
1266                 {
1267                     TREEVIEW_InsertBefore(newItem, aChild, parentItem);
1268                     bItemInserted = TRUE;
1269                     break;
1270                 }
1271                 else if (comp > 0)      /* we are bigger than the current one */
1272                 {
1273                     previousChild = aChild;
1274
1275                     /* This will help us to exit if there is no more sibling */
1276                     aChild = (aChild->nextSibling == 0)
1277                         ? NULL
1278                         : aChild->nextSibling;
1279
1280                     /* Look at the next item */
1281                     continue;
1282                 }
1283                 else if (comp == 0)
1284                 {
1285                     /*
1286                      * An item with this name is already existing, therefore,
1287                      * we add after the one we found
1288                      */
1289                     TREEVIEW_InsertAfter(newItem, aChild, parentItem);
1290                     bItemInserted = TRUE;
1291                     break;
1292                 }
1293             }
1294
1295             /*
1296              * we reach the end of the child list and the item has not
1297              * yet been inserted, therefore, insert it after the last child.
1298              */
1299             if ((!bItemInserted) && (aChild == NULL))
1300                 TREEVIEW_InsertAfter(newItem, previousChild, parentItem);
1301
1302             break;
1303         }
1304     }
1305
1306
1307     TRACE("new item %p; parent %p, mask %x\n", newItem,
1308           newItem->parent, tvItem->mask);
1309
1310     newItem->iLevel = newItem->parent->iLevel + 1;
1311
1312     if (newItem->parent->cChildren == 0)
1313         newItem->parent->cChildren = 1;
1314
1315     if (infoPtr->dwStyle & TVS_CHECKBOXES)
1316     {
1317         if (STATEIMAGEINDEX(newItem->state) == 0)
1318             newItem->state |= INDEXTOSTATEIMAGEMASK(1);
1319     }
1320
1321     if (infoPtr->firstVisible == NULL)
1322         infoPtr->firstVisible = newItem;
1323
1324     TREEVIEW_VerifyTree(infoPtr);
1325
1326     if (parentItem == infoPtr->root ||
1327         (ISVISIBLE(parentItem) && parentItem->state & TVIS_EXPANDED))
1328     {
1329        TREEVIEW_ITEM *item;
1330        TREEVIEW_ITEM *prev = TREEVIEW_GetPrevListItem(infoPtr, newItem);
1331
1332        TREEVIEW_RecalculateVisibleOrder(infoPtr, prev);
1333        TREEVIEW_ComputeItemInternalMetrics(infoPtr, newItem);
1334
1335        if (!bTextUpdated)
1336           TREEVIEW_UpdateDispInfo(infoPtr, newItem, TVIF_TEXT);
1337
1338        TREEVIEW_ComputeTextWidth(infoPtr, newItem, 0);
1339        TREEVIEW_UpdateScrollBars(infoPtr);
1340     /*
1341      * if the item was inserted in a visible part of the tree,
1342      * invalidate it, as well as those after it
1343      */
1344        for (item = newItem;
1345             item != NULL;
1346             item = TREEVIEW_GetNextListItem(infoPtr, item))
1347           TREEVIEW_Invalidate(infoPtr, item);
1348     }
1349     else
1350     {
1351        newItem->visibleOrder = -1;
1352
1353        /* refresh treeview if newItem is the first item inserted under parentItem */
1354        if (ISVISIBLE(parentItem) && newItem->prevSibling == newItem->nextSibling)
1355        {
1356           /* parent got '+' - update it */
1357           TREEVIEW_Invalidate(infoPtr, parentItem);
1358        }
1359     }
1360
1361     return (LRESULT)newItem;
1362 }
1363
1364
1365 static LRESULT
1366 TREEVIEW_InsertItemW(TREEVIEW_INFO *infoPtr, LPARAM lParam)
1367 {
1368     TVINSERTSTRUCTW *tvisW;
1369     TVINSERTSTRUCTA tvisA;
1370     LRESULT lRes;
1371
1372     tvisW = (LPTVINSERTSTRUCTW) lParam;
1373
1374     tvisA.hParent = tvisW->hParent;
1375     tvisA.hInsertAfter = tvisW->hInsertAfter;
1376
1377     tvisA.DUMMYUNIONNAME.item.mask = tvisW->DUMMYUNIONNAME.item.mask;
1378     tvisA.DUMMYUNIONNAME.item.hItem = tvisW->DUMMYUNIONNAME.item.hItem;
1379     tvisA.DUMMYUNIONNAME.item.state = tvisW->DUMMYUNIONNAME.item.state;
1380     tvisA.DUMMYUNIONNAME.item.stateMask = tvisW->DUMMYUNIONNAME.item.stateMask;
1381     tvisA.DUMMYUNIONNAME.item.cchTextMax =
1382         tvisW->DUMMYUNIONNAME.item.cchTextMax;
1383
1384     if (tvisW->DUMMYUNIONNAME.item.pszText)
1385     {
1386         if (tvisW->DUMMYUNIONNAME.item.pszText != LPSTR_TEXTCALLBACKW)
1387         {
1388             int len = WideCharToMultiByte( CP_ACP, 0, tvisW->DUMMYUNIONNAME.item.pszText, -1,
1389                                            NULL, 0, NULL, NULL );
1390             tvisA.DUMMYUNIONNAME.item.pszText = COMCTL32_Alloc(len);
1391             WideCharToMultiByte( CP_ACP, 0, tvisW->DUMMYUNIONNAME.item.pszText, -1,
1392                                  tvisA.DUMMYUNIONNAME.item.pszText, len, NULL, NULL );
1393         }
1394         else
1395         {
1396             tvisA.DUMMYUNIONNAME.item.pszText = LPSTR_TEXTCALLBACKA;
1397             tvisA.DUMMYUNIONNAME.item.cchTextMax = 0;
1398         }
1399     }
1400
1401     tvisA.DUMMYUNIONNAME.item.iImage = tvisW->DUMMYUNIONNAME.item.iImage;
1402     tvisA.DUMMYUNIONNAME.item.iSelectedImage =
1403         tvisW->DUMMYUNIONNAME.item.iSelectedImage;
1404     tvisA.DUMMYUNIONNAME.item.cChildren = tvisW->DUMMYUNIONNAME.item.cChildren;
1405     tvisA.DUMMYUNIONNAME.item.lParam = tvisW->DUMMYUNIONNAME.item.lParam;
1406
1407     lRes = TREEVIEW_InsertItemA(infoPtr, (LPARAM)&tvisA);
1408
1409     if (tvisA.DUMMYUNIONNAME.item.pszText != LPSTR_TEXTCALLBACKA)
1410     {
1411         COMCTL32_Free(tvisA.DUMMYUNIONNAME.item.pszText);
1412     }
1413
1414     return lRes;
1415
1416 }
1417
1418
1419 /* Item Deletion ************************************************************/
1420 static void
1421 TREEVIEW_RemoveItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem);
1422
1423 static void
1424 TREEVIEW_RemoveAllChildren(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *parentItem)
1425 {
1426     TREEVIEW_ITEM *kill = parentItem->firstChild;
1427
1428     while (kill != NULL)
1429     {
1430         TREEVIEW_ITEM *next = kill->nextSibling;
1431
1432         TREEVIEW_RemoveItem(infoPtr, kill);
1433
1434         kill = next;
1435     }
1436
1437     assert(parentItem->cChildren <= 0); /* I_CHILDRENCALLBACK or 0 */
1438     assert(parentItem->firstChild == NULL);
1439     assert(parentItem->lastChild == NULL);
1440 }
1441
1442 static void
1443 TREEVIEW_UnlinkItem(TREEVIEW_ITEM *item)
1444 {
1445     TREEVIEW_ITEM *parentItem = item->parent;
1446
1447     assert(item != NULL);
1448     assert(item->parent != NULL); /* i.e. it must not be the root */
1449
1450     if (parentItem->firstChild == item)
1451         parentItem->firstChild = item->nextSibling;
1452
1453     if (parentItem->lastChild == item)
1454         parentItem->lastChild = item->prevSibling;
1455
1456     if (parentItem->firstChild == NULL && parentItem->lastChild == NULL
1457         && parentItem->cChildren > 0)
1458         parentItem->cChildren = 0;
1459
1460     if (item->prevSibling)
1461         item->prevSibling->nextSibling = item->nextSibling;
1462
1463     if (item->nextSibling)
1464         item->nextSibling->prevSibling = item->prevSibling;
1465 }
1466
1467 static void
1468 TREEVIEW_RemoveItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem)
1469 {
1470     TRACE("%p, (%s)\n", wineItem, TREEVIEW_ItemName(wineItem));
1471
1472     TREEVIEW_SendTreeviewNotify(infoPtr, TVN_DELETEITEMW, TVC_UNKNOWN,
1473                                 TVIF_HANDLE | TVIF_PARAM, wineItem, 0);
1474
1475     if (wineItem->firstChild)
1476         TREEVIEW_RemoveAllChildren(infoPtr, wineItem);
1477
1478     TREEVIEW_UnlinkItem(wineItem);
1479
1480     infoPtr->uNumItems--;
1481
1482     if (wineItem->pszText != LPSTR_TEXTCALLBACKA)
1483         COMCTL32_Free(wineItem->pszText);
1484
1485     TREEVIEW_FreeItem(infoPtr, wineItem);
1486 }
1487
1488
1489 /* Empty out the tree. */
1490 static void
1491 TREEVIEW_RemoveTree(TREEVIEW_INFO *infoPtr)
1492 {
1493     TREEVIEW_RemoveAllChildren(infoPtr, infoPtr->root);
1494
1495     assert(infoPtr->uNumItems == 0);    /* root isn't counted in uNumItems */
1496 }
1497
1498 static LRESULT
1499 TREEVIEW_DeleteItem(TREEVIEW_INFO *infoPtr, HTREEITEM wineItem)
1500 {
1501     TREEVIEW_ITEM *oldSelection = infoPtr->selectedItem;
1502     TREEVIEW_ITEM *newSelection = oldSelection;
1503     TREEVIEW_ITEM *newFirstVisible = NULL;
1504     TREEVIEW_ITEM *parent, *prev = NULL;
1505     BOOL visible = FALSE;
1506
1507     if (wineItem == TVI_ROOT)
1508     {
1509         TRACE("TVI_ROOT\n");
1510         parent = infoPtr->root;
1511         newSelection = NULL;
1512         visible = TRUE;
1513         TREEVIEW_RemoveTree(infoPtr);
1514     }
1515     else
1516     {
1517         if (!TREEVIEW_ValidItem(infoPtr, wineItem))
1518             return FALSE;
1519
1520         TRACE("%p (%s)\n", wineItem, TREEVIEW_ItemName(wineItem));
1521         parent = wineItem->parent;
1522
1523         if (ISVISIBLE(wineItem))
1524         {
1525             prev = TREEVIEW_GetPrevListItem(infoPtr, wineItem);
1526             visible = TRUE;
1527         }
1528
1529         if (infoPtr->selectedItem != NULL
1530             && (wineItem == infoPtr->selectedItem
1531                 || TREEVIEW_IsChildOf(wineItem, infoPtr->selectedItem)))
1532         {
1533             if (wineItem->nextSibling)
1534                 newSelection = wineItem->nextSibling;
1535             else if (wineItem->parent != infoPtr->root)
1536                 newSelection = wineItem->parent;
1537         }
1538
1539         if (infoPtr->firstVisible == wineItem)
1540         {
1541             if (wineItem->nextSibling)
1542                newFirstVisible = wineItem->nextSibling;
1543             else if (wineItem->prevSibling)
1544                newFirstVisible = wineItem->prevSibling;
1545             else if (wineItem->parent != infoPtr->root)
1546                newFirstVisible = wineItem->parent;
1547                TREEVIEW_SetFirstVisible(infoPtr, NULL, TRUE);
1548         }
1549         else
1550             newFirstVisible = infoPtr->firstVisible;
1551
1552         TREEVIEW_RemoveItem(infoPtr, wineItem);
1553     }
1554
1555     /* Don't change if somebody else already has. */
1556     if (oldSelection == infoPtr->selectedItem)
1557     {
1558         if (TREEVIEW_ValidItem(infoPtr, newSelection))
1559             TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, newSelection, TVC_UNKNOWN);
1560         else
1561             infoPtr->selectedItem = 0;
1562     }
1563
1564     /* Validate insertMark dropItem.
1565      * hotItem ??? - used for comparison only.
1566      */
1567     if (!TREEVIEW_ValidItem(infoPtr, infoPtr->insertMarkItem))
1568         infoPtr->insertMarkItem = 0;
1569
1570     if (!TREEVIEW_ValidItem(infoPtr, infoPtr->dropItem))
1571         infoPtr->dropItem = 0;
1572
1573     if (!TREEVIEW_ValidItem(infoPtr, newFirstVisible))
1574         newFirstVisible = infoPtr->root->firstChild;
1575
1576     TREEVIEW_VerifyTree(infoPtr);
1577
1578
1579     if (visible)
1580     {
1581        TREEVIEW_SetFirstVisible(infoPtr, newFirstVisible, TRUE);
1582        TREEVIEW_RecalculateVisibleOrder(infoPtr, prev);
1583        TREEVIEW_UpdateScrollBars(infoPtr);
1584        TREEVIEW_Invalidate(infoPtr, NULL);
1585     }
1586     else if (ISVISIBLE(parent) && !TREEVIEW_HasChildren(infoPtr, parent))
1587     {
1588        /* parent lost '+/-' - update it */
1589        TREEVIEW_Invalidate(infoPtr, parent);
1590     }
1591
1592     return TRUE;
1593 }
1594
1595
1596 /* Get/Set Messages *********************************************************/
1597 static LRESULT
1598 TREEVIEW_SetRedraw(TREEVIEW_INFO* infoPtr, WPARAM wParam, LPARAM lParam)
1599 {
1600   if(wParam)
1601     infoPtr->bRedraw = TRUE;
1602   else
1603     infoPtr->bRedraw = FALSE;
1604
1605   return 0;
1606 }
1607
1608 static LRESULT
1609 TREEVIEW_GetIndent(TREEVIEW_INFO *infoPtr)
1610 {
1611     TRACE("\n");
1612     return infoPtr->uIndent;
1613 }
1614
1615 static LRESULT
1616 TREEVIEW_SetIndent(TREEVIEW_INFO *infoPtr, UINT newIndent)
1617 {
1618     TRACE("\n");
1619
1620     if (newIndent < MINIMUM_INDENT)
1621         newIndent = MINIMUM_INDENT;
1622
1623     if (infoPtr->uIndent != newIndent)
1624     {
1625         infoPtr->uIndent = newIndent;
1626         TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
1627         TREEVIEW_UpdateScrollBars(infoPtr);
1628         TREEVIEW_Invalidate(infoPtr, NULL);
1629     }
1630
1631     return 0;
1632 }
1633
1634
1635 static LRESULT
1636 TREEVIEW_GetToolTips(TREEVIEW_INFO *infoPtr)
1637 {
1638     TRACE("\n");
1639     return (LRESULT)infoPtr->hwndToolTip;
1640 }
1641
1642 static LRESULT
1643 TREEVIEW_SetToolTips(TREEVIEW_INFO *infoPtr, HWND hwndTT)
1644 {
1645     HWND prevToolTip;
1646
1647     TRACE("\n");
1648     prevToolTip = infoPtr->hwndToolTip;
1649     infoPtr->hwndToolTip = hwndTT;
1650
1651     return (LRESULT)prevToolTip;
1652 }
1653
1654
1655 static LRESULT
1656 TREEVIEW_GetScrollTime(TREEVIEW_INFO *infoPtr)
1657 {
1658     return infoPtr->uScrollTime;
1659 }
1660
1661 static LRESULT
1662 TREEVIEW_SetScrollTime(TREEVIEW_INFO *infoPtr, UINT uScrollTime)
1663 {
1664     UINT uOldScrollTime = infoPtr->uScrollTime;
1665
1666     infoPtr->uScrollTime = min(uScrollTime, 100);
1667
1668     return uOldScrollTime;
1669 }
1670
1671
1672 static LRESULT
1673 TREEVIEW_GetImageList(TREEVIEW_INFO *infoPtr, WPARAM wParam)
1674 {
1675     TRACE("\n");
1676
1677     switch (wParam)
1678     {
1679     case (WPARAM)TVSIL_NORMAL:
1680         return (LRESULT)infoPtr->himlNormal;
1681
1682     case (WPARAM)TVSIL_STATE:
1683         return (LRESULT)infoPtr->himlState;
1684
1685     default:
1686         return 0;
1687     }
1688 }
1689
1690 static LRESULT
1691 TREEVIEW_SetImageList(TREEVIEW_INFO *infoPtr, WPARAM wParam, HIMAGELIST himlNew)
1692 {
1693     HIMAGELIST himlOld = 0;
1694     int oldWidth  = infoPtr->normalImageWidth;
1695     int oldHeight = infoPtr->normalImageHeight;
1696
1697
1698     TRACE("%x,%p\n", wParam, himlNew);
1699
1700     switch (wParam)
1701     {
1702     case (WPARAM)TVSIL_NORMAL:
1703         himlOld = infoPtr->himlNormal;
1704         infoPtr->himlNormal = himlNew;
1705
1706         if (himlNew != NULL)
1707             ImageList_GetIconSize(himlNew, &infoPtr->normalImageWidth,
1708                                   &infoPtr->normalImageHeight);
1709         else
1710         {
1711             infoPtr->normalImageWidth = 0;
1712             infoPtr->normalImageHeight = 0;
1713         }
1714
1715         break;
1716
1717     case (WPARAM)TVSIL_STATE:
1718         himlOld = infoPtr->himlState;
1719         infoPtr->himlState = himlNew;
1720
1721         if (himlNew != NULL)
1722             ImageList_GetIconSize(himlNew, &infoPtr->stateImageWidth,
1723                                   &infoPtr->stateImageHeight);
1724         else
1725         {
1726             infoPtr->stateImageWidth = 0;
1727             infoPtr->stateImageHeight = 0;
1728         }
1729
1730         break;
1731     }
1732
1733     if (oldWidth != infoPtr->normalImageWidth ||
1734         oldHeight != infoPtr->normalImageHeight)
1735     {
1736        TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
1737        TREEVIEW_UpdateScrollBars(infoPtr);
1738     }
1739
1740     TREEVIEW_Invalidate(infoPtr, NULL);
1741
1742     return (LRESULT)himlOld;
1743 }
1744
1745 /* Compute the natural height (based on the font size) for items. */
1746 static UINT
1747 TREEVIEW_NaturalHeight(TREEVIEW_INFO *infoPtr)
1748 {
1749     TEXTMETRICA tm;
1750     HDC hdc = GetDC(0);
1751     HFONT hOldFont = SelectObject(hdc, infoPtr->hFont);
1752
1753     GetTextMetricsA(hdc, &tm);
1754
1755     SelectObject(hdc, hOldFont);
1756     ReleaseDC(0, hdc);
1757
1758     /* The 16 is a hack because our fonts are tiny. */
1759     /* add 2 for the focus border and 1 more for margin some apps assume */
1760     return max(16, tm.tmHeight + tm.tmExternalLeading + 3);
1761 }
1762
1763 static LRESULT
1764 TREEVIEW_SetItemHeight(TREEVIEW_INFO *infoPtr, INT newHeight)
1765 {
1766     INT prevHeight = infoPtr->uItemHeight;
1767
1768     TRACE("%d \n", newHeight);
1769     if (newHeight == -1)
1770     {
1771         infoPtr->uItemHeight = TREEVIEW_NaturalHeight(infoPtr);
1772         infoPtr->bHeightSet = FALSE;
1773     }
1774     else
1775     {
1776         infoPtr->uItemHeight = newHeight;
1777         infoPtr->bHeightSet = TRUE;
1778     }
1779
1780     /* Round down, unless we support odd ("non even") heights. */
1781     if (!(infoPtr->dwStyle) & TVS_NONEVENHEIGHT)
1782         infoPtr->uItemHeight &= ~1;
1783
1784     if (infoPtr->uItemHeight != prevHeight)
1785     {
1786         TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
1787         TREEVIEW_UpdateScrollBars(infoPtr);
1788         TREEVIEW_Invalidate(infoPtr, NULL);
1789     }
1790
1791     return prevHeight;
1792 }
1793
1794 static LRESULT
1795 TREEVIEW_GetItemHeight(TREEVIEW_INFO *infoPtr)
1796 {
1797     TRACE("\n");
1798     return infoPtr->uItemHeight;
1799 }
1800
1801
1802 static LRESULT
1803 TREEVIEW_GetFont(TREEVIEW_INFO *infoPtr)
1804 {
1805     TRACE("%p\n", infoPtr->hFont);
1806     return (LRESULT)infoPtr->hFont;
1807 }
1808
1809
1810 static INT CALLBACK
1811 TREEVIEW_ResetTextWidth(LPVOID pItem, DWORD unused)
1812 {
1813     (void)unused;
1814
1815     ((TREEVIEW_ITEM *)pItem)->textWidth = 0;
1816
1817     return 1;
1818 }
1819
1820 static LRESULT
1821 TREEVIEW_SetFont(TREEVIEW_INFO *infoPtr, HFONT hFont, BOOL bRedraw)
1822 {
1823     UINT uHeight = infoPtr->uItemHeight;
1824
1825     TRACE("%p %i\n", hFont, bRedraw);
1826
1827     infoPtr->hFont = hFont ? hFont : GetStockObject(SYSTEM_FONT);
1828
1829     DeleteObject(infoPtr->hBoldFont);
1830     infoPtr->hBoldFont = TREEVIEW_CreateBoldFont(infoPtr->hFont);
1831
1832     if (!infoPtr->bHeightSet)
1833         infoPtr->uItemHeight = TREEVIEW_NaturalHeight(infoPtr);
1834
1835     if (uHeight != infoPtr->uItemHeight)
1836        TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
1837
1838     DPA_EnumCallback(infoPtr->items, TREEVIEW_ResetTextWidth, 0);
1839
1840     TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
1841     TREEVIEW_UpdateScrollBars(infoPtr);
1842
1843     if (bRedraw)
1844         TREEVIEW_Invalidate(infoPtr, NULL);
1845
1846     return 0;
1847 }
1848
1849
1850 static LRESULT
1851 TREEVIEW_GetLineColor(TREEVIEW_INFO *infoPtr)
1852 {
1853     TRACE("\n");
1854     return (LRESULT)infoPtr->clrLine;
1855 }
1856
1857 static LRESULT
1858 TREEVIEW_SetLineColor(TREEVIEW_INFO *infoPtr, COLORREF color)
1859 {
1860     COLORREF prevColor = infoPtr->clrLine;
1861
1862     TRACE("\n");
1863     infoPtr->clrLine = color;
1864     return (LRESULT)prevColor;
1865 }
1866
1867
1868 static LRESULT
1869 TREEVIEW_GetTextColor(TREEVIEW_INFO *infoPtr)
1870 {
1871     TRACE("\n");
1872     return (LRESULT)infoPtr->clrText;
1873 }
1874
1875 static LRESULT
1876 TREEVIEW_SetTextColor(TREEVIEW_INFO *infoPtr, COLORREF color)
1877 {
1878     COLORREF prevColor = infoPtr->clrText;
1879
1880     TRACE("\n");
1881     infoPtr->clrText = color;
1882
1883     if (infoPtr->clrText != prevColor)
1884         TREEVIEW_Invalidate(infoPtr, NULL);
1885
1886     return (LRESULT)prevColor;
1887 }
1888
1889
1890 static LRESULT
1891 TREEVIEW_GetBkColor(TREEVIEW_INFO *infoPtr)
1892 {
1893     TRACE("\n");
1894     return (LRESULT)infoPtr->clrBk;
1895 }
1896
1897 static LRESULT
1898 TREEVIEW_SetBkColor(TREEVIEW_INFO *infoPtr, COLORREF newColor)
1899 {
1900     COLORREF prevColor = infoPtr->clrBk;
1901
1902     TRACE("\n");
1903     infoPtr->clrBk = newColor;
1904
1905     if (newColor != prevColor)
1906         TREEVIEW_Invalidate(infoPtr, NULL);
1907
1908     return (LRESULT)prevColor;
1909 }
1910
1911
1912 static LRESULT
1913 TREEVIEW_GetInsertMarkColor(TREEVIEW_INFO *infoPtr)
1914 {
1915     TRACE("\n");
1916     return (LRESULT)infoPtr->clrInsertMark;
1917 }
1918
1919 static LRESULT
1920 TREEVIEW_SetInsertMarkColor(TREEVIEW_INFO *infoPtr, COLORREF color)
1921 {
1922     COLORREF prevColor = infoPtr->clrInsertMark;
1923
1924     TRACE("%lx\n", color);
1925     infoPtr->clrInsertMark = color;
1926
1927     return (LRESULT)prevColor;
1928 }
1929
1930
1931 static LRESULT
1932 TREEVIEW_SetInsertMark(TREEVIEW_INFO *infoPtr, BOOL wParam, HTREEITEM item)
1933 {
1934     TRACE("%d %p\n", wParam, item);
1935
1936     if (!TREEVIEW_ValidItem(infoPtr, item))
1937         return 0;
1938
1939     infoPtr->insertBeforeorAfter = wParam;
1940     infoPtr->insertMarkItem = item;
1941
1942     TREEVIEW_Invalidate(infoPtr, NULL);
1943
1944     return 1;
1945 }
1946
1947
1948 /************************************************************************
1949  * Some serious braindamage here. lParam is a pointer to both the
1950  * input HTREEITEM and the output RECT.
1951  */
1952 static LRESULT
1953 TREEVIEW_GetItemRect(TREEVIEW_INFO *infoPtr, BOOL fTextRect, LPRECT lpRect)
1954 {
1955     TREEVIEW_ITEM *wineItem;
1956     const HTREEITEM *pItem = (HTREEITEM *)lpRect;
1957
1958     TRACE("\n");
1959     /*
1960      * validate parameters
1961      */
1962     if (pItem == NULL)
1963         return FALSE;
1964
1965     wineItem = *pItem;
1966     if (!TREEVIEW_ValidItem(infoPtr, wineItem) || !ISVISIBLE(wineItem))
1967         return FALSE;
1968
1969     /*
1970      * If wParam is TRUE return the text size otherwise return
1971      * the whole item size
1972      */
1973     if (fTextRect)
1974     {
1975         /* Windows does not send TVN_GETDISPINFO here. */
1976
1977         lpRect->top = wineItem->rect.top;
1978         lpRect->bottom = wineItem->rect.bottom;
1979
1980         lpRect->left = wineItem->textOffset;
1981         lpRect->right = wineItem->textOffset + wineItem->textWidth;
1982     }
1983     else
1984     {
1985         *lpRect = wineItem->rect;
1986     }
1987
1988     TRACE("%s [L:%ld R:%ld T:%ld B:%ld]\n", fTextRect ? "text" : "item",
1989           lpRect->left, lpRect->right, lpRect->top, lpRect->bottom);
1990
1991     return TRUE;
1992 }
1993
1994 static inline LRESULT
1995 TREEVIEW_GetVisibleCount(TREEVIEW_INFO *infoPtr)
1996 {
1997     /* Suprise! This does not take integral height into account. */
1998     return infoPtr->clientHeight / infoPtr->uItemHeight;
1999 }
2000
2001
2002 static LRESULT
2003 TREEVIEW_GetItemA(TREEVIEW_INFO *infoPtr, LPTVITEMEXA tvItem)
2004 {
2005     TREEVIEW_ITEM *wineItem;
2006
2007     wineItem = tvItem->hItem;
2008     if (!TREEVIEW_ValidItem(infoPtr, wineItem))
2009         return FALSE;
2010
2011     TREEVIEW_UpdateDispInfo(infoPtr, wineItem, tvItem->mask);
2012
2013     if (tvItem->mask & TVIF_CHILDREN)
2014         tvItem->cChildren = wineItem->cChildren;
2015
2016     if (tvItem->mask & TVIF_HANDLE)
2017         tvItem->hItem = wineItem;
2018
2019     if (tvItem->mask & TVIF_IMAGE)
2020         tvItem->iImage = wineItem->iImage;
2021
2022     if (tvItem->mask & TVIF_INTEGRAL)
2023         tvItem->iIntegral = wineItem->iIntegral;
2024
2025     /* undocumented: windows ignores TVIF_PARAM and
2026      * * always sets lParam
2027      */
2028     tvItem->lParam = wineItem->lParam;
2029
2030     if (tvItem->mask & TVIF_SELECTEDIMAGE)
2031         tvItem->iSelectedImage = wineItem->iSelectedImage;
2032
2033     if (tvItem->mask & TVIF_STATE) {
2034         /* Careful here - Windows ignores the stateMask when you get the state
2035             That contradicts the documentation, but makes more common sense, masking
2036             retrieval in this way seems overkill */
2037         tvItem->state = wineItem->state;
2038     }
2039
2040     if (tvItem->mask & TVIF_TEXT)
2041         lstrcpynA(tvItem->pszText, wineItem->pszText, tvItem->cchTextMax);
2042
2043     TRACE("item <%p>, txt %p, img %p, mask %x\n",
2044           wineItem, tvItem->pszText, &tvItem->iImage, tvItem->mask);
2045
2046     return TRUE;
2047 }
2048
2049 /* Beware MSDN Library Visual Studio 6.0. It says -1 on failure, 0 on success,
2050  * which is wrong. */
2051 static LRESULT
2052 TREEVIEW_SetItemA(TREEVIEW_INFO *infoPtr, LPTVITEMEXA tvItem)
2053 {
2054     TREEVIEW_ITEM *wineItem;
2055     TREEVIEW_ITEM originalItem;
2056
2057     wineItem = tvItem->hItem;
2058
2059     TRACE("item %d,mask %x\n", TREEVIEW_GetItemIndex(infoPtr, wineItem),
2060           tvItem->mask);
2061
2062     if (!TREEVIEW_ValidItem(infoPtr, wineItem))
2063         return FALSE;
2064
2065     /* store the orignal item values */
2066     originalItem = *wineItem;
2067
2068     if (!TREEVIEW_DoSetItem(infoPtr, wineItem, tvItem))
2069         return FALSE;
2070
2071     /* If the text or TVIS_BOLD was changed, and it is visible, recalculate. */
2072     if ((tvItem->mask & TVIF_TEXT
2073          || (tvItem->mask & TVIF_STATE && tvItem->stateMask & TVIS_BOLD))
2074         && ISVISIBLE(wineItem))
2075     {
2076         TREEVIEW_UpdateDispInfo(infoPtr, wineItem, TVIF_TEXT);
2077         TREEVIEW_ComputeTextWidth(infoPtr, wineItem, 0);
2078     }
2079
2080     if (tvItem->mask != 0 && ISVISIBLE(wineItem))
2081     {
2082         /* The refresh updates everything, but we can't wait until then. */
2083         TREEVIEW_ComputeItemInternalMetrics(infoPtr, wineItem);
2084
2085         /* if any of the items values changed, redraw the item */
2086         if(memcmp(&originalItem, wineItem, sizeof(TREEVIEW_ITEM)))
2087         {
2088             if (tvItem->mask & TVIF_INTEGRAL)
2089             {
2090                 TREEVIEW_RecalculateVisibleOrder(infoPtr, wineItem);
2091                 TREEVIEW_UpdateScrollBars(infoPtr);
2092
2093                 TREEVIEW_Invalidate(infoPtr, NULL);
2094             }
2095             else
2096             {
2097                 TREEVIEW_UpdateScrollBars(infoPtr);
2098                 TREEVIEW_Invalidate(infoPtr, wineItem);
2099             }
2100         }
2101     }
2102
2103     return TRUE;
2104 }
2105
2106 static LRESULT
2107 TREEVIEW_GetItemW(TREEVIEW_INFO *infoPtr, LPTVITEMEXW tvItem)
2108 {
2109     TREEVIEW_ITEM *wineItem;
2110     INT         iItem;
2111     iItem = (INT)tvItem->hItem;
2112
2113     wineItem = tvItem->hItem;
2114     if(!TREEVIEW_ValidItem (infoPtr, wineItem))
2115         return FALSE;
2116
2117     TREEVIEW_UpdateDispInfo(infoPtr, wineItem, tvItem->mask);
2118
2119     if (tvItem->mask & TVIF_CHILDREN) {
2120         if (TVIF_CHILDREN==I_CHILDRENCALLBACK)
2121             FIXME("I_CHILDRENCALLBACK not supported\n");
2122         tvItem->cChildren = wineItem->cChildren;
2123     }
2124
2125     if (tvItem->mask & TVIF_HANDLE) {
2126         tvItem->hItem = wineItem;
2127     }
2128     if (tvItem->mask & TVIF_IMAGE) {
2129         tvItem->iImage = wineItem->iImage;
2130     }
2131     if (tvItem->mask & TVIF_INTEGRAL) {
2132         tvItem->iIntegral = wineItem->iIntegral;
2133     }
2134     /* undocumented: windows ignores TVIF_PARAM and
2135      * always sets lParam           */
2136     tvItem->lParam = wineItem->lParam;
2137     if (tvItem->mask & TVIF_SELECTEDIMAGE) {
2138         tvItem->iSelectedImage = wineItem->iSelectedImage;
2139     }
2140     if (tvItem->mask & TVIF_STATE) {
2141         tvItem->state = wineItem->state & tvItem->stateMask;
2142     }
2143
2144     if (tvItem->mask & TVIF_TEXT) {
2145         if (wineItem->pszText == LPSTR_TEXTCALLBACKA) {
2146             tvItem->pszText = LPSTR_TEXTCALLBACKW;
2147             FIXME(" GetItem called with LPSTR_TEXTCALLBACK\n");
2148         }
2149         else if (wineItem->pszText) {
2150             TRACE("orig str %s at %p\n",
2151                   debugstr_a(wineItem->pszText), wineItem->pszText);
2152             MultiByteToWideChar(CP_ACP, 0, wineItem->pszText,
2153                                 -1 , tvItem->pszText, tvItem->cchTextMax);
2154         }
2155     }
2156
2157     TRACE("item %d<%p>, txt %p<%s>, img %p, action %x\n",
2158           iItem, tvItem, tvItem->pszText, debugstr_w(tvItem->pszText),
2159           &tvItem->iImage, tvItem->mask);
2160     return TRUE;
2161 }
2162
2163 static LRESULT
2164 TREEVIEW_SetItemW(TREEVIEW_INFO *infoPtr, LPTVITEMEXW tvItem)
2165 {
2166     TVITEMEXA tvItemA;
2167     INT len;
2168     LRESULT rc;
2169
2170     tvItemA.mask = tvItem->mask;
2171     tvItemA.hItem = tvItem->hItem;
2172     tvItemA.state = tvItem->state;
2173     tvItemA.stateMask = tvItem->stateMask;
2174     if (tvItem->mask & TVIF_TEXT) {
2175         len = WideCharToMultiByte(CP_ACP, 0, tvItem->pszText, -1,
2176                                   NULL ,0 , NULL,NULL);
2177         if (len) {
2178             len ++;
2179             tvItemA.pszText = HeapAlloc(GetProcessHeap(),0,len*sizeof(WCHAR));
2180             len = WideCharToMultiByte(CP_ACP, 0, tvItem->pszText, -1,
2181                                       tvItemA.pszText ,len*sizeof(WCHAR),
2182                                       NULL,NULL);
2183         }
2184         else
2185             tvItemA.pszText = NULL;
2186     }
2187     tvItemA.cchTextMax = tvItem->cchTextMax;
2188     tvItemA.iImage = tvItem->iImage;
2189     tvItemA.iSelectedImage = tvItem->iSelectedImage;
2190     tvItemA.cChildren = tvItem->cChildren;
2191     tvItemA.lParam = tvItem->lParam;
2192     tvItemA.iIntegral = tvItem->iIntegral;
2193
2194     rc = TREEVIEW_SetItemA(infoPtr,&tvItemA);
2195     HeapFree(GetProcessHeap(),0,tvItemA.pszText);
2196     return rc;
2197 }
2198
2199 static LRESULT
2200 TREEVIEW_GetItemState(TREEVIEW_INFO *infoPtr, HTREEITEM wineItem, UINT mask)
2201 {
2202     TRACE("\n");
2203
2204     if (!wineItem || !TREEVIEW_ValidItem(infoPtr, wineItem))
2205         return 0;
2206
2207     return (wineItem->state & mask);
2208 }
2209
2210 static LRESULT
2211 TREEVIEW_GetNextItem(TREEVIEW_INFO *infoPtr, UINT which, HTREEITEM wineItem)
2212 {
2213     TREEVIEW_ITEM *retval;
2214
2215     retval = 0;
2216
2217     /* handle all the global data here */
2218     switch (which)
2219     {
2220     case TVGN_CHILD:            /* Special case: child of 0 is root */
2221         if (wineItem)
2222             break;
2223         /* fall through */
2224     case TVGN_ROOT:
2225         retval = infoPtr->root->firstChild;
2226         break;
2227
2228     case TVGN_CARET:
2229         retval = infoPtr->selectedItem;
2230         break;
2231
2232     case TVGN_FIRSTVISIBLE:
2233         retval = infoPtr->firstVisible;
2234         break;
2235
2236     case TVGN_DROPHILITE:
2237         retval = infoPtr->dropItem;
2238         break;
2239
2240     case TVGN_LASTVISIBLE:
2241         retval = TREEVIEW_GetLastListItem(infoPtr, infoPtr->root);
2242         break;
2243     }
2244
2245     if (retval)
2246     {
2247         TRACE("flags:%x, returns %p\n", which, retval);
2248         return (LRESULT)retval;
2249     }
2250
2251     if (wineItem == TVI_ROOT) wineItem = infoPtr->root;
2252
2253     if (!TREEVIEW_ValidItem(infoPtr, wineItem))
2254         return FALSE;
2255
2256     switch (which)
2257     {
2258     case TVGN_NEXT:
2259         retval = wineItem->nextSibling;
2260         break;
2261     case TVGN_PREVIOUS:
2262         retval = wineItem->prevSibling;
2263         break;
2264     case TVGN_PARENT:
2265         retval = (wineItem->parent != infoPtr->root) ? wineItem->parent : NULL;
2266         break;
2267     case TVGN_CHILD:
2268         retval = wineItem->firstChild;
2269         break;
2270     case TVGN_NEXTVISIBLE:
2271         retval = TREEVIEW_GetNextListItem(infoPtr, wineItem);
2272         break;
2273     case TVGN_PREVIOUSVISIBLE:
2274         retval = TREEVIEW_GetPrevListItem(infoPtr, wineItem);
2275         break;
2276     default:
2277         TRACE("Unknown msg %x,item %p\n", which, wineItem);
2278         break;
2279     }
2280
2281     TRACE("flags:%x, item %p;returns %p\n", which, wineItem, retval);
2282     return (LRESULT)retval;
2283 }
2284
2285
2286 static LRESULT
2287 TREEVIEW_GetCount(TREEVIEW_INFO *infoPtr)
2288 {
2289     TRACE(" %d\n", infoPtr->uNumItems);
2290     return (LRESULT)infoPtr->uNumItems;
2291 }
2292
2293 static VOID
2294 TREEVIEW_ToggleItemState(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
2295 {
2296     if (infoPtr->dwStyle & TVS_CHECKBOXES)
2297     {
2298         static const unsigned int state_table[] = { 0, 2, 1 };
2299
2300         unsigned int state;
2301
2302         state = STATEIMAGEINDEX(item->state);
2303         TRACE("state:%x\n", state);
2304         item->state &= ~TVIS_STATEIMAGEMASK;
2305
2306         if (state < 3)
2307             state = state_table[state];
2308
2309         item->state |= INDEXTOSTATEIMAGEMASK(state);
2310
2311         TRACE("state:%x\n", state);
2312         TREEVIEW_Invalidate(infoPtr, item);
2313     }
2314 }
2315
2316
2317 /* Painting *************************************************************/
2318
2319 /* Draw the lines and expand button for an item. Also draws one section
2320  * of the line from item's parent to item's parent's next sibling. */
2321 static void
2322 TREEVIEW_DrawItemLines(TREEVIEW_INFO *infoPtr, HDC hdc, TREEVIEW_ITEM *item)
2323 {
2324     LONG centerx, centery;
2325     BOOL lar = ((infoPtr->dwStyle
2326                  & (TVS_LINESATROOT|TVS_HASLINES|TVS_HASBUTTONS))
2327                 > TVS_LINESATROOT);
2328
2329     if (!lar && item->iLevel == 0)
2330         return;
2331
2332     centerx = (item->linesOffset + item->stateOffset) / 2;
2333     centery = (item->rect.top + item->rect.bottom) / 2;
2334
2335     if (infoPtr->dwStyle & TVS_HASLINES)
2336     {
2337         HPEN hOldPen, hNewPen;
2338         HTREEITEM parent;
2339
2340         /*
2341          * Get a dotted grey pen
2342          */
2343         hNewPen = CreatePen(PS_ALTERNATE, 0, infoPtr->clrLine);
2344         hOldPen = SelectObject(hdc, hNewPen);
2345
2346         MoveToEx(hdc, item->stateOffset, centery, NULL);
2347         LineTo(hdc, centerx - 1, centery);
2348
2349         if (item->prevSibling || item->parent != infoPtr->root)
2350         {
2351             MoveToEx(hdc, centerx, item->rect.top, NULL);
2352             LineTo(hdc, centerx, centery);
2353         }
2354
2355         if (item->nextSibling)
2356         {
2357             MoveToEx(hdc, centerx, centery, NULL);
2358             LineTo(hdc, centerx, item->rect.bottom + 1);
2359         }
2360
2361         /* Draw the line from our parent to its next sibling. */
2362         parent = item->parent;
2363         while (parent != infoPtr->root)
2364         {
2365             int pcenterx = (parent->linesOffset + parent->stateOffset) / 2;
2366
2367             if (parent->nextSibling
2368                 /* skip top-levels unless TVS_LINESATROOT */
2369                 && parent->stateOffset > parent->linesOffset)
2370             {
2371                 MoveToEx(hdc, pcenterx, item->rect.top, NULL);
2372                 LineTo(hdc, pcenterx, item->rect.bottom + 1);
2373             }
2374
2375             parent = parent->parent;
2376         }
2377
2378         SelectObject(hdc, hOldPen);
2379         DeleteObject(hNewPen);
2380     }
2381
2382     /*
2383      * Display the (+/-) signs
2384      */
2385
2386     if (infoPtr->dwStyle & TVS_HASBUTTONS)
2387     {
2388         if (item->cChildren)
2389         {
2390             LONG height = item->rect.bottom - item->rect.top;
2391             LONG width  = item->stateOffset - item->linesOffset;
2392             LONG rectsize = min(height, width) / 4;
2393             /* plussize = ceil(rectsize * 3/4) */
2394             LONG plussize = (rectsize + 1) * 3 / 4;
2395
2396             HPEN hNewPen  = CreatePen(PS_SOLID, 0, infoPtr->clrLine);
2397             HPEN hOldPen  = SelectObject(hdc, hNewPen);
2398             HBRUSH hbr    = CreateSolidBrush(infoPtr->clrBk);
2399             HBRUSH hbrOld = SelectObject(hdc, hbr);
2400
2401             Rectangle(hdc, centerx - rectsize, centery - rectsize,
2402                       centerx + rectsize + 1, centery + rectsize + 1);
2403
2404             SelectObject(hdc, hbrOld);
2405             DeleteObject(hbr);
2406
2407             SelectObject(hdc, hOldPen);
2408             DeleteObject(hNewPen);
2409
2410             MoveToEx(hdc, centerx - plussize + 1, centery, NULL);
2411             LineTo(hdc, centerx + plussize, centery);
2412
2413             if (!(item->state & TVIS_EXPANDED))
2414             {
2415                 MoveToEx(hdc, centerx, centery - plussize + 1, NULL);
2416                 LineTo(hdc, centerx, centery + plussize);
2417             }
2418         }
2419     }
2420 }
2421
2422 static void
2423 TREEVIEW_DrawItem(TREEVIEW_INFO *infoPtr, HDC hdc, TREEVIEW_ITEM *wineItem)
2424 {
2425     INT cditem;
2426     HFONT hOldFont;
2427     int centery;
2428
2429     hOldFont = SelectObject(hdc, TREEVIEW_FontForItem(infoPtr, wineItem));
2430
2431     TREEVIEW_UpdateDispInfo(infoPtr, wineItem, CALLBACK_MASK_ALL);
2432
2433     /* The custom draw handler can query the text rectangle,
2434      * so get ready. */
2435     TREEVIEW_ComputeTextWidth(infoPtr, wineItem, hdc);
2436
2437     cditem = 0;
2438
2439     if (infoPtr->cdmode & CDRF_NOTIFYITEMDRAW)
2440     {
2441         cditem = TREEVIEW_SendCustomDrawItemNotify
2442             (infoPtr, hdc, wineItem, CDDS_ITEMPREPAINT);
2443         TRACE("prepaint:cditem-app returns 0x%x\n", cditem);
2444
2445         if (cditem & CDRF_SKIPDEFAULT)
2446         {
2447             SelectObject(hdc, hOldFont);
2448             return;
2449         }
2450     }
2451
2452     if (cditem & CDRF_NEWFONT)
2453         TREEVIEW_ComputeTextWidth(infoPtr, wineItem, hdc);
2454
2455     TREEVIEW_DrawItemLines(infoPtr, hdc, wineItem);
2456
2457     centery = (wineItem->rect.top + wineItem->rect.bottom) / 2;
2458
2459     /*
2460      * Display the images associated with this item
2461      */
2462     {
2463         INT imageIndex;
2464
2465         /* State images are displayed to the left of the Normal image
2466          * image number is in state; zero should be `display no image'.
2467          */
2468         imageIndex = STATEIMAGEINDEX(wineItem->state);
2469
2470         if (infoPtr->himlState && imageIndex)
2471         {
2472             ImageList_Draw(infoPtr->himlState, imageIndex, hdc,
2473                            wineItem->stateOffset,
2474                            centery - infoPtr->stateImageHeight / 2,
2475                            ILD_NORMAL);
2476         }
2477
2478         /* Now, draw the normal image; can be either selected or
2479          * non-selected image.
2480          */
2481
2482         if ((wineItem->state & TVIS_SELECTED) && (wineItem->iSelectedImage))
2483         {
2484             /* The item is currently selected */
2485             imageIndex = wineItem->iSelectedImage;
2486         }
2487         else
2488         {
2489             /* The item is not selected */
2490             imageIndex = wineItem->iImage;
2491         }
2492
2493         if (infoPtr->himlNormal)
2494         {
2495             int ovlIdx = wineItem->state & TVIS_OVERLAYMASK;
2496
2497             ImageList_Draw(infoPtr->himlNormal, imageIndex, hdc,
2498                            wineItem->imageOffset,
2499                            centery - infoPtr->normalImageHeight / 2,
2500                            ILD_NORMAL | ovlIdx);
2501         }
2502     }
2503
2504
2505     /*
2506      * Display the text associated with this item
2507      */
2508
2509     /* Don't paint item's text if it's being edited */
2510     if (!infoPtr->hwndEdit || (infoPtr->selectedItem != wineItem))
2511     {
2512         if (wineItem->pszText)
2513         {
2514             COLORREF oldTextColor = 0;
2515             INT oldBkMode;
2516             HBRUSH hbrBk = 0;
2517             BOOL inFocus = (GetFocus() == infoPtr->hwnd);
2518             RECT rcText;
2519
2520             oldBkMode = SetBkMode(hdc, TRANSPARENT);
2521
2522             /* - If item is drop target or it is selected and window is in focus -
2523              * use blue background (COLOR_HIGHLIGHT).
2524              * - If item is selected, window is not in focus, but it has style
2525              * TVS_SHOWSELALWAYS - use grey background (COLOR_BTNFACE)
2526              * - Otherwise - don't fill background
2527              */
2528             if ((wineItem->state & TVIS_DROPHILITED) || ((wineItem == infoPtr->focusedItem) && !(wineItem->state & TVIS_SELECTED)) ||
2529                 ((wineItem->state & TVIS_SELECTED) && (!infoPtr->focusedItem) &&
2530                  (inFocus || (infoPtr->dwStyle & TVS_SHOWSELALWAYS))))
2531             {
2532                 if ((wineItem->state & TVIS_DROPHILITED) || inFocus)
2533                 {
2534                     hbrBk = CreateSolidBrush(GetSysColor(COLOR_HIGHLIGHT));
2535                     oldTextColor =
2536                         SetTextColor(hdc, GetSysColor(COLOR_HIGHLIGHTTEXT));
2537                 }
2538                 else
2539                 {
2540                     hbrBk = CreateSolidBrush(GetSysColor(COLOR_BTNFACE));
2541
2542                     if (infoPtr->clrText == -1)
2543                         oldTextColor =
2544                             SetTextColor(hdc, GetSysColor(COLOR_WINDOWTEXT));
2545                     else
2546                         oldTextColor = SetTextColor(hdc, infoPtr->clrText);
2547                 }
2548             }
2549             else
2550             {
2551                 if (infoPtr->clrText == -1)
2552                     oldTextColor =
2553                         SetTextColor(hdc, GetSysColor(COLOR_WINDOWTEXT));
2554                 else
2555                     oldTextColor = SetTextColor(hdc, infoPtr->clrText);
2556             }
2557
2558             rcText.top = wineItem->rect.top;
2559             rcText.bottom = wineItem->rect.bottom;
2560             rcText.left = wineItem->textOffset;
2561             rcText.right = rcText.left + wineItem->textWidth + 4;
2562
2563             if (hbrBk)
2564             {
2565                 FillRect(hdc, &rcText, hbrBk);
2566                 DeleteObject(hbrBk);
2567             }
2568
2569             /* Draw the box around the selected item */
2570             if ((wineItem == infoPtr->selectedItem) && inFocus)
2571             {
2572                 DrawFocusRect(hdc,&rcText);
2573             }
2574
2575             InflateRect(&rcText, -2, -1); /* allow for the focus rect */
2576
2577             TRACE("drawing text %s at (%ld,%ld)-(%ld,%ld)\n",
2578                   debugstr_a(wineItem->pszText),
2579                   rcText.left, rcText.top, rcText.right, rcText.bottom);
2580
2581             /* Draw it */
2582             DrawTextA(hdc,
2583                       wineItem->pszText,
2584                       lstrlenA(wineItem->pszText),
2585                       &rcText,
2586                       DT_CENTER | DT_VCENTER | DT_SINGLELINE | DT_NOPREFIX);
2587
2588             /* Restore the hdc state */
2589             SetTextColor(hdc, oldTextColor);
2590
2591             if (oldBkMode != TRANSPARENT)
2592                 SetBkMode(hdc, oldBkMode);
2593         }
2594     }
2595
2596     /* Draw insertion mark if necessary */
2597
2598     if (infoPtr->insertMarkItem)
2599         TRACE("item:%d,mark:%d\n",
2600               TREEVIEW_GetItemIndex(infoPtr, wineItem),
2601               (int)infoPtr->insertMarkItem);
2602
2603     if (wineItem == infoPtr->insertMarkItem)
2604     {
2605         HPEN hNewPen, hOldPen;
2606         int offset;
2607         int left, right;
2608
2609         hNewPen = CreatePen(PS_SOLID, 2, infoPtr->clrInsertMark);
2610         hOldPen = SelectObject(hdc, hNewPen);
2611
2612         if (infoPtr->insertBeforeorAfter)
2613             offset = wineItem->rect.bottom - 1;
2614         else
2615             offset = wineItem->rect.top + 1;
2616
2617         left = wineItem->textOffset - 2;
2618         right = wineItem->textOffset + wineItem->textWidth + 2;
2619
2620         MoveToEx(hdc, left, offset - 3, NULL);
2621         LineTo(hdc, left, offset + 4);
2622
2623         MoveToEx(hdc, left, offset, NULL);
2624         LineTo(hdc, right + 1, offset);
2625
2626         MoveToEx(hdc, right, offset + 3, NULL);
2627         LineTo(hdc, right, offset - 4);
2628
2629         SelectObject(hdc, hOldPen);
2630         DeleteObject(hNewPen);
2631     }
2632
2633     if (cditem & CDRF_NOTIFYPOSTPAINT)
2634     {
2635         cditem = TREEVIEW_SendCustomDrawItemNotify
2636             (infoPtr, hdc, wineItem, CDDS_ITEMPOSTPAINT);
2637         TRACE("postpaint:cditem-app returns 0x%x\n", cditem);
2638     }
2639
2640     SelectObject(hdc, hOldFont);
2641 }
2642
2643 /* Computes treeHeight and treeWidth and updates the scroll bars.
2644  */
2645 static void
2646 TREEVIEW_UpdateScrollBars(TREEVIEW_INFO *infoPtr)
2647 {
2648     TREEVIEW_ITEM *wineItem;
2649     HWND hwnd = infoPtr->hwnd;
2650     BOOL vert = FALSE;
2651     BOOL horz = FALSE;
2652     SCROLLINFO si;
2653     LONG scrollX = infoPtr->scrollX;
2654
2655     infoPtr->treeWidth = 0;
2656     infoPtr->treeHeight = 0;
2657
2658     /* We iterate through all visible items in order to get the tree height
2659      * and width */
2660     wineItem = infoPtr->root->firstChild;
2661
2662     while (wineItem != NULL)
2663     {
2664         if (ISVISIBLE(wineItem))
2665         {
2666             /* actually we draw text at textOffset + 2 */
2667             if (2+wineItem->textOffset+wineItem->textWidth > infoPtr->treeWidth)
2668                 infoPtr->treeWidth = wineItem->textOffset+wineItem->textWidth+2;
2669
2670             /* This is scroll-adjusted, but we fix this below. */
2671             infoPtr->treeHeight = wineItem->rect.bottom;
2672         }
2673
2674         wineItem = TREEVIEW_GetNextListItem(infoPtr, wineItem);
2675     }
2676
2677     /* Fix the scroll adjusted treeHeight and treeWidth. */
2678     if (infoPtr->root->firstChild)
2679         infoPtr->treeHeight -= infoPtr->root->firstChild->rect.top;
2680
2681     infoPtr->treeWidth += infoPtr->scrollX;
2682
2683     if (infoPtr->dwStyle & TVS_NOSCROLL) return;
2684
2685     /* Adding one scroll bar may take up enough space that it forces us
2686      * to add the other as well. */
2687     if (infoPtr->treeHeight > infoPtr->clientHeight)
2688     {
2689         vert = TRUE;
2690
2691         if (infoPtr->treeWidth
2692             > infoPtr->clientWidth - GetSystemMetrics(SM_CXVSCROLL))
2693             horz = TRUE;
2694     }
2695     else if (infoPtr->treeWidth > infoPtr->clientWidth)
2696         horz = TRUE;
2697
2698     if (!vert && horz && infoPtr->treeHeight
2699         > infoPtr->clientHeight - GetSystemMetrics(SM_CYVSCROLL))
2700         vert = TRUE;
2701
2702     if (horz && (infoPtr->dwStyle & TVS_NOHSCROLL)) horz = FALSE;
2703
2704     si.cbSize = sizeof(SCROLLINFO);
2705     si.fMask  = SIF_POS|SIF_RANGE|SIF_PAGE;
2706     si.nMin   = 0;
2707
2708     if (vert)
2709     {
2710         si.nPage = TREEVIEW_GetVisibleCount(infoPtr);
2711        if ( si.nPage )
2712        {
2713            si.nPos  = infoPtr->firstVisible->visibleOrder;
2714            si.nMax  = infoPtr->maxVisibleOrder - 1;
2715
2716            SetScrollInfo(hwnd, SB_VERT, &si, TRUE);
2717
2718            if (!(infoPtr->uInternalStatus & TV_VSCROLL))
2719                ShowScrollBar(hwnd, SB_VERT, TRUE);
2720            infoPtr->uInternalStatus |= TV_VSCROLL;
2721        }
2722        else
2723        {
2724            if (infoPtr->uInternalStatus & TV_VSCROLL)
2725                ShowScrollBar(hwnd, SB_VERT, FALSE);
2726            infoPtr->uInternalStatus &= ~TV_VSCROLL;
2727        }
2728     }
2729     else
2730     {
2731         if (infoPtr->uInternalStatus & TV_VSCROLL)
2732             ShowScrollBar(hwnd, SB_VERT, FALSE);
2733         infoPtr->uInternalStatus &= ~TV_VSCROLL;
2734     }
2735
2736     if (horz)
2737     {
2738         si.nPage = infoPtr->clientWidth;
2739         si.nPos  = infoPtr->scrollX;
2740         si.nMax  = infoPtr->treeWidth - 1;
2741
2742         if (si.nPos > si.nMax - max( si.nPage-1, 0 ))
2743         {
2744            si.nPos = si.nMax - max( si.nPage-1, 0 );
2745            scrollX = si.nPos;
2746         }
2747
2748         if (!(infoPtr->uInternalStatus & TV_HSCROLL))
2749             ShowScrollBar(hwnd, SB_HORZ, TRUE);
2750         infoPtr->uInternalStatus |= TV_HSCROLL;
2751
2752         SetScrollInfo(hwnd, SB_HORZ, &si, TRUE);
2753     }
2754     else
2755     {
2756         if (infoPtr->uInternalStatus & TV_HSCROLL)
2757             ShowScrollBar(hwnd, SB_HORZ, FALSE);
2758         infoPtr->uInternalStatus &= ~TV_HSCROLL;
2759
2760         scrollX = 0;
2761     }
2762
2763     if (infoPtr->scrollX != scrollX)
2764     {
2765         TREEVIEW_HScroll(infoPtr,
2766                          MAKEWPARAM(SB_THUMBPOSITION, scrollX));
2767     }
2768
2769     if (!horz)
2770         infoPtr->uInternalStatus &= ~TV_HSCROLL;
2771 }
2772
2773 /* CtrlSpy doesn't mention this, but CorelDRAW's object manager needs it. */
2774 static LRESULT
2775 TREEVIEW_EraseBackground(TREEVIEW_INFO *infoPtr, HDC hDC)
2776 {
2777     HBRUSH hBrush = CreateSolidBrush(infoPtr->clrBk);
2778     RECT rect;
2779
2780     GetClientRect(infoPtr->hwnd, &rect);
2781     FillRect(hDC, &rect, hBrush);
2782     DeleteObject(hBrush);
2783
2784     return 1;
2785 }
2786
2787 static void
2788 TREEVIEW_Refresh(TREEVIEW_INFO *infoPtr, HDC hdc, RECT *rc)
2789 {
2790     HWND hwnd = infoPtr->hwnd;
2791     RECT rect = *rc;
2792     TREEVIEW_ITEM *wineItem;
2793
2794     if (infoPtr->clientHeight == 0 || infoPtr->clientWidth == 0)
2795     {
2796         TRACE("empty window\n");
2797         return;
2798     }
2799
2800     infoPtr->cdmode = TREEVIEW_SendCustomDrawNotify(infoPtr, CDDS_PREPAINT,
2801                                                     hdc, rect);
2802
2803     if (infoPtr->cdmode == CDRF_SKIPDEFAULT)
2804     {
2805         ReleaseDC(hwnd, hdc);
2806         return;
2807     }
2808
2809     for (wineItem = infoPtr->root->firstChild;
2810          wineItem != NULL;
2811          wineItem = TREEVIEW_GetNextListItem(infoPtr, wineItem))
2812     {
2813         if (ISVISIBLE(wineItem))
2814         {
2815             /* Avoid unneeded calculations */
2816             if (wineItem->rect.top > rect.bottom)
2817                 break;
2818             if (wineItem->rect.bottom < rect.top)
2819                 continue;
2820
2821             TREEVIEW_DrawItem(infoPtr, hdc, wineItem);
2822         }
2823     }
2824
2825     TREEVIEW_UpdateScrollBars(infoPtr);
2826
2827     if (infoPtr->cdmode & CDRF_NOTIFYPOSTPAINT)
2828         infoPtr->cdmode =
2829             TREEVIEW_SendCustomDrawNotify(infoPtr, CDDS_POSTPAINT, hdc, rect);
2830 }
2831
2832 static void
2833 TREEVIEW_Invalidate(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
2834 {
2835     if (item != NULL)
2836         InvalidateRect(infoPtr->hwnd, &item->rect, TRUE);
2837     else
2838         InvalidateRect(infoPtr->hwnd, NULL, TRUE);
2839 }
2840
2841 static LRESULT
2842 TREEVIEW_Paint(TREEVIEW_INFO *infoPtr, WPARAM wParam)
2843 {
2844     HDC hdc;
2845     PAINTSTRUCT ps;
2846     RECT rc;
2847
2848     TRACE("\n");
2849
2850     if (wParam)
2851     {
2852         hdc = (HDC)wParam;
2853         if (!GetUpdateRect(infoPtr->hwnd, &rc, TRUE))
2854         {
2855             HBITMAP hbitmap;
2856             BITMAP bitmap;
2857             hbitmap = GetCurrentObject(hdc, OBJ_BITMAP);
2858             if (!hbitmap) return 0;
2859             GetObjectA(hbitmap, sizeof(BITMAP), &bitmap);
2860             rc.left = 0; rc.top = 0;
2861             rc.right = bitmap.bmWidth;
2862             rc.bottom = bitmap.bmHeight;
2863             TREEVIEW_EraseBackground(infoPtr, (HDC)wParam);
2864         }
2865     }
2866     else
2867     {
2868         hdc = BeginPaint(infoPtr->hwnd, &ps);
2869         rc = ps.rcPaint;
2870     }
2871
2872     if(infoPtr->bRedraw) /* WM_SETREDRAW sets bRedraw */
2873         TREEVIEW_Refresh(infoPtr, hdc, &rc);
2874
2875     if (!wParam)
2876         EndPaint(infoPtr->hwnd, &ps);
2877
2878     return 0;
2879 }
2880
2881
2882 /* Sorting **************************************************************/
2883
2884 /***************************************************************************
2885  * Forward the DPA local callback to the treeview owner callback
2886  */
2887 static INT WINAPI
2888 TREEVIEW_CallBackCompare(TREEVIEW_ITEM *first, TREEVIEW_ITEM *second, LPTVSORTCB pCallBackSort)
2889 {
2890     /* Forward the call to the client-defined callback */
2891     return pCallBackSort->lpfnCompare(first->lParam,
2892                                       second->lParam,
2893                                       pCallBackSort->lParam);
2894 }
2895
2896 /***************************************************************************
2897  * Treeview native sort routine: sort on item text.
2898  */
2899 static INT WINAPI
2900 TREEVIEW_SortOnName(TREEVIEW_ITEM *first, TREEVIEW_ITEM *second,
2901                      TREEVIEW_INFO *infoPtr)
2902 {
2903     TREEVIEW_UpdateDispInfo(infoPtr, first, TVIF_TEXT);
2904     TREEVIEW_UpdateDispInfo(infoPtr, second, TVIF_TEXT);
2905
2906     return strcasecmp(first->pszText, second->pszText);
2907 }
2908
2909 /* Returns the number of physical children belonging to item. */
2910 static INT
2911 TREEVIEW_CountChildren(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
2912 {
2913     INT cChildren = 0;
2914     HTREEITEM hti;
2915
2916     for (hti = item->firstChild; hti != NULL; hti = hti->nextSibling)
2917         cChildren++;
2918
2919     return cChildren;
2920 }
2921
2922 /* Returns a DPA containing a pointer to each physical child of item in
2923  * sibling order. If item has no children, an empty DPA is returned. */
2924 static HDPA
2925 TREEVIEW_BuildChildDPA(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
2926 {
2927     HTREEITEM child = item->firstChild;
2928
2929     HDPA list = DPA_Create(8);
2930     if (list == 0) return NULL;
2931
2932     for (child = item->firstChild; child != NULL; child = child->nextSibling)
2933     {
2934         if (DPA_InsertPtr(list, INT_MAX, child) == -1)
2935         {
2936             DPA_Destroy(list);
2937             return NULL;
2938         }
2939     }
2940
2941     return list;
2942 }
2943
2944 /***************************************************************************
2945  * Setup the treeview structure with regards of the sort method
2946  * and sort the children of the TV item specified in lParam
2947  * fRecurse: currently unused. Should be zero.
2948  * parent: if pSort!=NULL, should equal pSort->hParent.
2949  *         otherwise, item which child items are to be sorted.
2950  * pSort:  sort method info. if NULL, sort on item text.
2951  *         if non-NULL, sort on item's lParam content, and let the
2952  *         application decide what that means. See also TVM_SORTCHILDRENCB.
2953  */
2954
2955 static LRESULT
2956 TREEVIEW_Sort(TREEVIEW_INFO *infoPtr, BOOL fRecurse, HTREEITEM parent,
2957               LPTVSORTCB pSort)
2958 {
2959     INT cChildren;
2960     PFNDPACOMPARE pfnCompare;
2961     LPARAM lpCompare;
2962
2963     /* undocumented feature: TVI_ROOT or NULL means `sort the whole tree' */
2964     if (parent == TVI_ROOT || parent == NULL)
2965         parent = infoPtr->root;
2966
2967     /* Check for a valid handle to the parent item */
2968     if (!TREEVIEW_ValidItem(infoPtr, parent))
2969     {
2970         ERR("invalid item hParent=%x\n", (INT)parent);
2971         return FALSE;
2972     }
2973
2974     if (pSort)
2975     {
2976         pfnCompare = (PFNDPACOMPARE)TREEVIEW_CallBackCompare;
2977         lpCompare = (LPARAM)pSort;
2978     }
2979     else
2980     {
2981         pfnCompare = (PFNDPACOMPARE)TREEVIEW_SortOnName;
2982         lpCompare = (LPARAM)infoPtr;
2983     }
2984
2985     cChildren = TREEVIEW_CountChildren(infoPtr, parent);
2986
2987     /* Make sure there is something to sort */
2988     if (cChildren > 1)
2989     {
2990         /* TREEVIEW_ITEM rechaining */
2991         INT count = 0;
2992         HTREEITEM item = 0;
2993         HTREEITEM nextItem = 0;
2994         HTREEITEM prevItem = 0;
2995
2996         HDPA sortList = TREEVIEW_BuildChildDPA(infoPtr, parent);
2997
2998         if (sortList == NULL)
2999             return FALSE;
3000
3001         /* let DPA sort the list */
3002         DPA_Sort(sortList, pfnCompare, lpCompare);
3003
3004         /* The order of DPA entries has been changed, so fixup the
3005          * nextSibling and prevSibling pointers. */
3006
3007         item = (HTREEITEM)DPA_GetPtr(sortList, count++);
3008         while ((nextItem = (HTREEITEM)DPA_GetPtr(sortList, count++)) != NULL)
3009         {
3010             /* link the two current item toghether */
3011             item->nextSibling = nextItem;
3012             nextItem->prevSibling = item;
3013
3014             if (prevItem == NULL)
3015             {
3016                 /* this is the first item, update the parent */
3017                 parent->firstChild = item;
3018                 item->prevSibling = NULL;
3019             }
3020             else
3021             {
3022                 /* fix the back chaining */
3023                 item->prevSibling = prevItem;
3024             }
3025
3026             /* get ready for the next one */
3027             prevItem = item;
3028             item = nextItem;
3029         }
3030
3031         /* the last item is pointed to by item and never has a sibling */
3032         item->nextSibling = NULL;
3033         parent->lastChild = item;
3034
3035         DPA_Destroy(sortList);
3036
3037         TREEVIEW_VerifyTree(infoPtr);
3038
3039         if (parent->state & TVIS_EXPANDED)
3040         {
3041             int visOrder = infoPtr->firstVisible->visibleOrder;
3042
3043         if (parent == infoPtr->root)
3044             TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
3045         else
3046             TREEVIEW_RecalculateVisibleOrder(infoPtr, parent);
3047
3048             if (TREEVIEW_IsChildOf(parent, infoPtr->firstVisible))
3049             {
3050                 TREEVIEW_ITEM *item;
3051
3052                 for (item = infoPtr->root->firstChild; item != NULL;
3053                      item = TREEVIEW_GetNextListItem(infoPtr, item))
3054                 {
3055                     if (item->visibleOrder == visOrder)
3056                         break;
3057                 }
3058
3059                 TREEVIEW_SetFirstVisible(infoPtr, item, FALSE);
3060             }
3061
3062             TREEVIEW_Invalidate(infoPtr, NULL);
3063         }
3064
3065         return TRUE;
3066     }
3067     return FALSE;
3068 }
3069
3070
3071 /***************************************************************************
3072  * Setup the treeview structure with regards of the sort method
3073  * and sort the children of the TV item specified in lParam
3074  */
3075 static LRESULT
3076 TREEVIEW_SortChildrenCB(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPTVSORTCB pSort)
3077 {
3078     return TREEVIEW_Sort(infoPtr, wParam, pSort->hParent, pSort);
3079 }
3080
3081
3082 /***************************************************************************
3083  * Sort the children of the TV item specified in lParam.
3084  */
3085 static LRESULT
3086 TREEVIEW_SortChildren(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
3087 {
3088     return TREEVIEW_Sort(infoPtr, (BOOL)wParam, (HTREEITEM)lParam, NULL);
3089 }
3090
3091
3092 /* Expansion/Collapse ***************************************************/
3093
3094 static BOOL
3095 TREEVIEW_SendExpanding(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
3096                        UINT action)
3097 {
3098     return !TREEVIEW_SendTreeviewNotify(infoPtr, TVN_ITEMEXPANDINGW, action,
3099                                         TVIF_HANDLE | TVIF_STATE | TVIF_PARAM
3100                                         | TVIF_IMAGE | TVIF_SELECTEDIMAGE,
3101                                         0, wineItem);
3102 }
3103
3104 static VOID
3105 TREEVIEW_SendExpanded(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
3106                       UINT action)
3107 {
3108     TREEVIEW_SendTreeviewNotify(infoPtr, TVN_ITEMEXPANDEDW, action,
3109                                 TVIF_HANDLE | TVIF_STATE | TVIF_PARAM
3110                                 | TVIF_IMAGE | TVIF_SELECTEDIMAGE,
3111                                 0, wineItem);
3112 }
3113
3114
3115 /* This corresponds to TVM_EXPAND with TVE_COLLAPSE.
3116  * bRemoveChildren corresponds to TVE_COLLAPSERESET. */
3117 static BOOL
3118 TREEVIEW_Collapse(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
3119                   BOOL bRemoveChildren, BOOL bUser)
3120 {
3121     UINT action = TVE_COLLAPSE | (bRemoveChildren ? TVE_COLLAPSERESET : 0);
3122     BOOL bSetSelection, bSetFirstVisible;
3123
3124     TRACE("TVE_COLLAPSE %p %s\n", wineItem, TREEVIEW_ItemName(wineItem));
3125
3126     if (!(wineItem->state & TVIS_EXPANDED) || wineItem->firstChild == NULL)
3127         return FALSE;
3128
3129     if (bUser)
3130         TREEVIEW_SendExpanding(infoPtr, wineItem, action);
3131
3132     wineItem->state &= ~TVIS_EXPANDED;
3133
3134     if (bUser)
3135         TREEVIEW_SendExpanded(infoPtr, wineItem, action);
3136
3137     bSetSelection = (infoPtr->selectedItem != NULL
3138                      && TREEVIEW_IsChildOf(wineItem, infoPtr->selectedItem));
3139
3140     bSetFirstVisible = (infoPtr->firstVisible != NULL
3141                         && TREEVIEW_IsChildOf(wineItem, infoPtr->firstVisible));
3142
3143     if (bRemoveChildren)
3144     {
3145         TRACE("TVE_COLLAPSERESET\n");
3146         wineItem->state &= ~TVIS_EXPANDEDONCE;
3147         TREEVIEW_RemoveAllChildren(infoPtr, wineItem);
3148     }
3149
3150     if (wineItem->firstChild)
3151     {
3152         TREEVIEW_ITEM *item, *sibling;
3153
3154         sibling = TREEVIEW_GetNextListItem(infoPtr, wineItem);
3155
3156         for (item = wineItem->firstChild; item != sibling;
3157              item = TREEVIEW_GetNextListItem(infoPtr, item))
3158         {
3159             item->visibleOrder = -1;
3160         }
3161     }
3162
3163     TREEVIEW_RecalculateVisibleOrder(infoPtr, wineItem);
3164
3165     TREEVIEW_SetFirstVisible(infoPtr, bSetFirstVisible ? wineItem
3166                              : infoPtr->firstVisible, TRUE);
3167
3168     if (bSetSelection)
3169     {
3170         /* Don't call DoSelectItem, it sends notifications. */
3171         if (TREEVIEW_ValidItem(infoPtr, infoPtr->selectedItem))
3172             infoPtr->selectedItem->state &= ~TVIS_SELECTED;
3173         wineItem->state |= TVIS_SELECTED;
3174         infoPtr->selectedItem = wineItem;
3175
3176         TREEVIEW_EnsureVisible(infoPtr, wineItem, FALSE);
3177     }
3178
3179     TREEVIEW_UpdateScrollBars(infoPtr);
3180     TREEVIEW_Invalidate(infoPtr, NULL);
3181
3182     return TRUE;
3183 }
3184
3185 static BOOL
3186 TREEVIEW_Expand(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
3187                 BOOL bExpandPartial, BOOL bUser)
3188 {
3189     TRACE("\n");
3190
3191     if (!TREEVIEW_HasChildren(infoPtr, wineItem)
3192         || wineItem->state & TVIS_EXPANDED)
3193         return FALSE;
3194
3195     TRACE("TVE_EXPAND %p %s\n", wineItem, TREEVIEW_ItemName(wineItem));
3196
3197     if (bUser || !(wineItem->state & TVIS_EXPANDEDONCE))
3198     {
3199         if (!TREEVIEW_SendExpanding(infoPtr, wineItem, TVE_EXPAND))
3200         {
3201             TRACE("  TVN_ITEMEXPANDING returned TRUE, exiting...\n");
3202             return FALSE;
3203         }
3204
3205         wineItem->state |= TVIS_EXPANDED;
3206         TREEVIEW_SendExpanded(infoPtr, wineItem, TVE_EXPAND);
3207         wineItem->state |= TVIS_EXPANDEDONCE;
3208     }
3209     else
3210     {
3211         /* this item has already been expanded */
3212         wineItem->state |= TVIS_EXPANDED;
3213     }
3214
3215     if (bExpandPartial)
3216         FIXME("TVE_EXPANDPARTIAL not implemented\n");
3217
3218     TREEVIEW_RecalculateVisibleOrder(infoPtr, wineItem);
3219     TREEVIEW_UpdateSubTree(infoPtr, wineItem);
3220     TREEVIEW_UpdateScrollBars(infoPtr);
3221
3222     /* Scroll up so that as many children as possible are visible.
3223      * This looses when expanding causes an HScroll bar to appear, but we
3224      * don't know that yet, so the last item is obscured. */
3225     if (wineItem->firstChild != NULL)
3226     {
3227         int nChildren = wineItem->lastChild->visibleOrder
3228             - wineItem->firstChild->visibleOrder + 1;
3229
3230         int visible_pos = wineItem->visibleOrder
3231             - infoPtr->firstVisible->visibleOrder;
3232
3233         int rows_below = TREEVIEW_GetVisibleCount(infoPtr) - visible_pos - 1;
3234
3235         if (visible_pos > 0 && nChildren > rows_below)
3236         {
3237             int scroll = nChildren - rows_below;
3238
3239             if (scroll > visible_pos)
3240                 scroll = visible_pos;
3241
3242             if (scroll > 0)
3243             {
3244                 TREEVIEW_ITEM *newFirstVisible
3245                     = TREEVIEW_GetListItem(infoPtr, infoPtr->firstVisible,
3246                                            scroll);
3247
3248
3249                 TREEVIEW_SetFirstVisible(infoPtr, newFirstVisible, TRUE);
3250             }
3251         }
3252     }
3253
3254     TREEVIEW_Invalidate(infoPtr, NULL);
3255
3256     return TRUE;
3257 }
3258
3259 static BOOL
3260 TREEVIEW_Toggle(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem, BOOL bUser)
3261 {
3262     TRACE("\n");
3263
3264     if (wineItem->state & TVIS_EXPANDED)
3265         return TREEVIEW_Collapse(infoPtr, wineItem, FALSE, bUser);
3266     else
3267         return TREEVIEW_Expand(infoPtr, wineItem, FALSE, bUser);
3268 }
3269
3270 static VOID
3271 TREEVIEW_ExpandAll(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
3272 {
3273     TREEVIEW_Expand(infoPtr, item, FALSE, TRUE);
3274
3275     for (item = item->firstChild; item != NULL; item = item->nextSibling)
3276     {
3277         if (TREEVIEW_HasChildren(infoPtr, item))
3278             TREEVIEW_ExpandAll(infoPtr, item);
3279     }
3280 }
3281
3282 /* Note:If the specified item is the child of a collapsed parent item,
3283    the parent's list of child items is (recursively) expanded to reveal the
3284    specified item. This is mentioned for TREEVIEW_SelectItem; don't
3285    know if it also applies here.
3286 */
3287
3288 static LRESULT
3289 TREEVIEW_ExpandMsg(TREEVIEW_INFO *infoPtr, UINT flag, HTREEITEM wineItem)
3290 {
3291     if (!TREEVIEW_ValidItem(infoPtr, wineItem))
3292         return 0;
3293
3294     TRACE("For (%s) item:%d, flags %x, state:%d\n",
3295               TREEVIEW_ItemName(wineItem), flag,
3296               TREEVIEW_GetItemIndex(infoPtr, wineItem), wineItem->state);
3297
3298     switch (flag & TVE_TOGGLE)
3299     {
3300     case TVE_COLLAPSE:
3301         return TREEVIEW_Collapse(infoPtr, wineItem, flag & TVE_COLLAPSERESET,
3302                                  FALSE);
3303
3304     case TVE_EXPAND:
3305         return TREEVIEW_Expand(infoPtr, wineItem, flag & TVE_EXPANDPARTIAL,
3306                                FALSE);
3307
3308     case TVE_TOGGLE:
3309         return TREEVIEW_Toggle(infoPtr, wineItem, TRUE);
3310
3311     default:
3312         return 0;
3313     }
3314
3315 #if 0
3316     TRACE("Exiting, Item %p state is now %d...\n", wineItem, wineItem->state);
3317 #endif
3318 }
3319
3320 /* Hit-Testing **********************************************************/
3321
3322 static TREEVIEW_ITEM *
3323 TREEVIEW_HitTestPoint(TREEVIEW_INFO *infoPtr, POINT pt)
3324 {
3325     TREEVIEW_ITEM *wineItem;
3326     LONG row;
3327
3328     if (!infoPtr->firstVisible)
3329         return NULL;
3330
3331     row = pt.y / infoPtr->uItemHeight + infoPtr->firstVisible->visibleOrder;
3332
3333     for (wineItem = infoPtr->firstVisible; wineItem != NULL;
3334          wineItem = TREEVIEW_GetNextListItem(infoPtr, wineItem))
3335     {
3336         if (row >= wineItem->visibleOrder
3337             && row < wineItem->visibleOrder + wineItem->iIntegral)
3338             break;
3339     }
3340
3341     return wineItem;
3342 }
3343
3344 static LRESULT
3345 TREEVIEW_HitTest(TREEVIEW_INFO *infoPtr, LPTVHITTESTINFO lpht)
3346 {
3347     TREEVIEW_ITEM *wineItem;
3348     RECT rect;
3349     UINT status;
3350     LONG x, y;
3351
3352     lpht->hItem = 0;
3353     GetClientRect(infoPtr->hwnd, &rect);
3354     status = 0;
3355     x = lpht->pt.x;
3356     y = lpht->pt.y;
3357
3358     if (x < rect.left)
3359     {
3360         status |= TVHT_TOLEFT;
3361     }
3362     else if (x > rect.right)
3363     {
3364         status |= TVHT_TORIGHT;
3365     }
3366
3367     if (y < rect.top)
3368     {
3369         status |= TVHT_ABOVE;
3370     }
3371     else if (y > rect.bottom)
3372     {
3373         status |= TVHT_BELOW;
3374     }
3375
3376     if (status)
3377     {
3378         lpht->flags = status;
3379         return (LRESULT)(HTREEITEM)NULL;
3380     }
3381
3382     wineItem = TREEVIEW_HitTestPoint(infoPtr, lpht->pt);
3383     if (!wineItem)
3384     {
3385         lpht->flags = TVHT_NOWHERE;
3386         return (LRESULT)(HTREEITEM)NULL;
3387     }
3388
3389     if (x >= wineItem->textOffset + wineItem->textWidth)
3390     {
3391         lpht->flags = TVHT_ONITEMRIGHT;
3392     }
3393     else if (x >= wineItem->textOffset)
3394     {
3395         lpht->flags = TVHT_ONITEMLABEL;
3396     }
3397     else if (x >= wineItem->imageOffset)
3398     {
3399         lpht->flags = TVHT_ONITEMICON;
3400     }
3401     else if (x >= wineItem->stateOffset)
3402     {
3403         lpht->flags = TVHT_ONITEMSTATEICON;
3404     }
3405     else if (x >= wineItem->linesOffset && infoPtr->dwStyle & TVS_HASBUTTONS)
3406     {
3407         lpht->flags = TVHT_ONITEMBUTTON;
3408     }
3409     else
3410     {
3411         lpht->flags = TVHT_ONITEMINDENT;
3412     }
3413
3414     lpht->hItem = wineItem;
3415     TRACE("(%ld,%ld):result %x\n", lpht->pt.x, lpht->pt.y, lpht->flags);
3416
3417     return (LRESULT)wineItem;
3418 }
3419
3420 /* Item Label Editing ***************************************************/
3421
3422 static LRESULT
3423 TREEVIEW_GetEditControl(TREEVIEW_INFO *infoPtr)
3424 {
3425     return (LRESULT)infoPtr->hwndEdit;
3426 }
3427
3428 static LRESULT CALLBACK
3429 TREEVIEW_Edit_SubclassProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
3430 {
3431     TREEVIEW_INFO *infoPtr;
3432     BOOL bCancel = FALSE;
3433
3434     switch (uMsg)
3435     {
3436     case WM_PAINT:
3437         {
3438             LRESULT rc;
3439             TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(GetParent(hwnd));
3440
3441             TRACE("WM_PAINT start\n");
3442             rc = CallWindowProcA(infoPtr->wpEditOrig, hwnd, uMsg, wParam,
3443                                  lParam);
3444             TRACE("WM_PAINT done\n");
3445             return rc;
3446         }
3447
3448     case WM_KILLFOCUS:
3449     {
3450         TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(GetParent(hwnd));
3451         if (infoPtr->bIgnoreEditKillFocus)
3452             return TRUE;
3453
3454         break;
3455     }
3456
3457     case WM_GETDLGCODE:
3458         return DLGC_WANTARROWS | DLGC_WANTALLKEYS;
3459
3460     case WM_KEYDOWN:
3461         if (wParam == (WPARAM)VK_ESCAPE)
3462         {
3463             bCancel = TRUE;
3464             break;
3465         }
3466         else if (wParam == (WPARAM)VK_RETURN)
3467         {
3468             break;
3469         }
3470
3471         /* fall through */
3472     default:
3473         {
3474             TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(GetParent(hwnd));
3475
3476             return CallWindowProcA(infoPtr->wpEditOrig, hwnd, uMsg, wParam,
3477                                    lParam);
3478         }
3479     }
3480
3481     /* Processing TVN_ENDLABELEDIT message could kill the focus       */
3482     /* eg. Using a messagebox                                         */
3483
3484     infoPtr = TREEVIEW_GetInfoPtr(GetParent(hwnd));
3485     infoPtr->bIgnoreEditKillFocus = TRUE;
3486     TREEVIEW_EndEditLabelNow(infoPtr, bCancel || !infoPtr->bLabelChanged);
3487     infoPtr->bIgnoreEditKillFocus = FALSE;
3488
3489     return 0;
3490 }
3491
3492
3493 /* should handle edit control messages here */
3494
3495 static LRESULT
3496 TREEVIEW_Command(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
3497 {
3498     TRACE("%x %ld\n", wParam, lParam);
3499
3500     switch (HIWORD(wParam))
3501     {
3502     case EN_UPDATE:
3503         {
3504             /*
3505              * Adjust the edit window size
3506              */
3507             char buffer[1024];
3508             TREEVIEW_ITEM *editItem = infoPtr->selectedItem;
3509             HDC hdc = GetDC(infoPtr->hwndEdit);
3510             SIZE sz;
3511             int len;
3512             HFONT hFont, hOldFont = 0;
3513
3514             infoPtr->bLabelChanged = TRUE;
3515
3516             len = GetWindowTextA(infoPtr->hwndEdit, buffer, sizeof(buffer));
3517
3518             /* Select font to get the right dimension of the string */
3519             hFont = (HFONT)SendMessageA(infoPtr->hwndEdit, WM_GETFONT, 0, 0);
3520             if (hFont != 0)
3521             {
3522                 hOldFont = SelectObject(hdc, hFont);
3523             }
3524
3525             if (GetTextExtentPoint32A(hdc, buffer, strlen(buffer), &sz))
3526             {
3527                 TEXTMETRICA textMetric;
3528
3529                 /* Add Extra spacing for the next character */
3530                 GetTextMetricsA(hdc, &textMetric);
3531                 sz.cx += (textMetric.tmMaxCharWidth * 2);
3532
3533                 sz.cx = max(sz.cx, textMetric.tmMaxCharWidth * 3);
3534                 sz.cx = min(sz.cx,
3535                             infoPtr->clientWidth - editItem->textOffset + 2);
3536
3537                 SetWindowPos(infoPtr->hwndEdit,
3538                              HWND_TOP,
3539                              0,
3540                              0,
3541                              sz.cx,
3542                              editItem->rect.bottom - editItem->rect.top + 3,
3543                              SWP_NOMOVE | SWP_DRAWFRAME);
3544             }
3545
3546             if (hFont != 0)
3547             {
3548                 SelectObject(hdc, hOldFont);
3549             }
3550
3551             ReleaseDC(infoPtr->hwnd, hdc);
3552             break;
3553         }
3554
3555     default:
3556         return SendMessageA(GetParent(infoPtr->hwnd), WM_COMMAND, wParam, lParam);
3557     }
3558
3559     return 0;
3560 }
3561
3562 static HWND
3563 TREEVIEW_EditLabelA(TREEVIEW_INFO *infoPtr, HTREEITEM hItem)
3564 {
3565     HWND hwnd = infoPtr->hwnd;
3566     HWND hwndEdit;
3567     SIZE sz;
3568     TREEVIEW_ITEM *editItem = hItem;
3569     HINSTANCE hinst = (HINSTANCE)GetWindowLongA(hwnd, GWL_HINSTANCE);
3570     HDC hdc;
3571     HFONT hOldFont=0;
3572     TEXTMETRICA textMetric;
3573
3574     TRACE("%x %p\n", (unsigned)hwnd, hItem);
3575     if (!TREEVIEW_ValidItem(infoPtr, editItem))
3576         return NULL;
3577
3578     if (infoPtr->hwndEdit)
3579         return infoPtr->hwndEdit;
3580
3581     infoPtr->bLabelChanged = FALSE;
3582
3583     /* Make sure that edit item is selected */
3584     TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, hItem, TVC_UNKNOWN);
3585     TREEVIEW_EnsureVisible(infoPtr, hItem, TRUE);
3586
3587     TREEVIEW_UpdateDispInfo(infoPtr, editItem, TVIF_TEXT);
3588
3589     hdc = GetDC(hwnd);
3590     /* Select the font to get appropriate metric dimensions */
3591     if (infoPtr->hFont != 0)
3592     {
3593         hOldFont = SelectObject(hdc, infoPtr->hFont);
3594     }
3595
3596     /* Get string length in pixels */
3597     GetTextExtentPoint32A(hdc, editItem->pszText, strlen(editItem->pszText),
3598                           &sz);
3599
3600     /* Add Extra spacing for the next character */
3601     GetTextMetricsA(hdc, &textMetric);
3602     sz.cx += (textMetric.tmMaxCharWidth * 2);
3603
3604     sz.cx = max(sz.cx, textMetric.tmMaxCharWidth * 3);
3605     sz.cx = min(sz.cx, infoPtr->clientWidth - editItem->textOffset + 2);
3606
3607     if (infoPtr->hFont != 0)
3608     {
3609         SelectObject(hdc, hOldFont);
3610     }
3611
3612     ReleaseDC(hwnd, hdc);
3613     hwndEdit = CreateWindowExA(WS_EX_LEFT,
3614                                "EDIT",
3615                                0,
3616                                WS_CHILD | WS_BORDER | ES_AUTOHSCROLL |
3617                                WS_CLIPSIBLINGS | ES_WANTRETURN |
3618                                ES_LEFT, editItem->textOffset - 2,
3619                                editItem->rect.top - 1, sz.cx + 3,
3620                                editItem->rect.bottom -
3621                                editItem->rect.top + 3, hwnd, 0, hinst, 0);
3622 /* FIXME: (HMENU)IDTVEDIT,pcs->hInstance,0); */
3623
3624     infoPtr->hwndEdit = hwndEdit;
3625
3626     /* Get a 2D border. */
3627     SetWindowLongA(hwndEdit, GWL_EXSTYLE,
3628                    GetWindowLongA(hwndEdit, GWL_EXSTYLE) & ~WS_EX_CLIENTEDGE);
3629     SetWindowLongA(hwndEdit, GWL_STYLE,
3630                    GetWindowLongA(hwndEdit, GWL_STYLE) | WS_BORDER);
3631
3632     SendMessageA(hwndEdit, WM_SETFONT,
3633                  (WPARAM)TREEVIEW_FontForItem(infoPtr, editItem), FALSE);
3634
3635     infoPtr->wpEditOrig = (WNDPROC)SetWindowLongA(hwndEdit, GWL_WNDPROC,
3636                                                   (DWORD)
3637                                                   TREEVIEW_Edit_SubclassProc);
3638
3639     if (TREEVIEW_BeginLabelEditNotify(infoPtr, editItem))
3640     {
3641         DestroyWindow(hwndEdit);
3642         infoPtr->hwndEdit = 0;
3643         return NULL;
3644     }
3645
3646     infoPtr->selectedItem = hItem;
3647     SetWindowTextA(hwndEdit, editItem->pszText);
3648     SetFocus(hwndEdit);
3649     SendMessageA(hwndEdit, EM_SETSEL, 0, -1);
3650     ShowWindow(hwndEdit, SW_SHOW);
3651
3652     return hwndEdit;
3653 }
3654
3655
3656 static LRESULT
3657 TREEVIEW_EndEditLabelNow(TREEVIEW_INFO *infoPtr, BOOL bCancel)
3658 {
3659     HWND hwnd = infoPtr->hwnd;
3660     TREEVIEW_ITEM *editedItem = infoPtr->selectedItem;
3661     NMTVDISPINFOA tvdi;
3662     BOOL bCommit;
3663     char tmpText[1024] = { '\0' };
3664     int iLength = 0;
3665
3666     if (!infoPtr->hwndEdit)
3667         return FALSE;
3668
3669     tvdi.hdr.hwndFrom = hwnd;
3670     tvdi.hdr.idFrom = GetWindowLongA(hwnd, GWL_ID);
3671     tvdi.hdr.code = get_notifycode(infoPtr, TVN_ENDLABELEDITW);
3672     tvdi.item.mask = 0;
3673     tvdi.item.hItem = editedItem;
3674     tvdi.item.state = editedItem->state;
3675     tvdi.item.lParam = editedItem->lParam;
3676
3677     if (!bCancel)
3678     {
3679         iLength = GetWindowTextA(infoPtr->hwndEdit, tmpText, 1023);
3680
3681         if (iLength >= 1023)
3682         {
3683             ERR("Insufficient space to retrieve new item label\n");
3684         }
3685
3686         tvdi.item.pszText = tmpText;
3687         tvdi.item.cchTextMax = iLength + 1;
3688     }
3689     else
3690     {
3691         tvdi.item.pszText = NULL;
3692         tvdi.item.cchTextMax = 0;
3693     }
3694
3695     bCommit = (BOOL)TREEVIEW_SendRealNotify(infoPtr,
3696                                  (WPARAM)tvdi.hdr.idFrom, (LPARAM)&tvdi);
3697
3698     if (!bCancel && bCommit)    /* Apply the changes */
3699     {
3700         if (strcmp(tmpText, editedItem->pszText) != 0)
3701         {
3702             if (NULL == COMCTL32_ReAlloc(editedItem->pszText, iLength + 1))
3703             {
3704                 ERR("OutOfMemory, cannot allocate space for label\n");
3705                 DestroyWindow(infoPtr->hwndEdit);
3706                 infoPtr->hwndEdit = 0;
3707                 return FALSE;
3708             }
3709             else
3710             {
3711                 editedItem->cchTextMax = iLength + 1;
3712                 lstrcpyA(editedItem->pszText, tmpText);
3713             }
3714         }
3715     }
3716
3717     ShowWindow(infoPtr->hwndEdit, SW_HIDE);
3718     DestroyWindow(infoPtr->hwndEdit);
3719     infoPtr->hwndEdit = 0;
3720     return TRUE;
3721 }
3722
3723 static LRESULT
3724 TREEVIEW_HandleTimer(TREEVIEW_INFO *infoPtr, WPARAM wParam)
3725 {
3726     if (wParam != TV_EDIT_TIMER)
3727     {
3728         ERR("got unknown timer\n");
3729         return 1;
3730     }
3731
3732     KillTimer(infoPtr->hwnd, TV_EDIT_TIMER);
3733     infoPtr->Timer &= ~TV_EDIT_TIMER_SET;
3734
3735     TREEVIEW_EditLabelA(infoPtr, infoPtr->selectedItem);
3736
3737     return 0;
3738 }
3739
3740
3741 /* Mouse Tracking/Drag **************************************************/
3742
3743 /***************************************************************************
3744  * This is quite unusual piece of code, but that's how it's implemented in
3745  * Windows.
3746  */
3747 static LRESULT
3748 TREEVIEW_TrackMouse(TREEVIEW_INFO *infoPtr, POINT pt)
3749 {
3750     INT cxDrag = GetSystemMetrics(SM_CXDRAG);
3751     INT cyDrag = GetSystemMetrics(SM_CYDRAG);
3752     RECT r;
3753     MSG msg;
3754
3755     r.top = pt.y - cyDrag;
3756     r.left = pt.x - cxDrag;
3757     r.bottom = pt.y + cyDrag;
3758     r.right = pt.x + cxDrag;
3759
3760     SetCapture(infoPtr->hwnd);
3761
3762     while (1)
3763     {
3764         if (PeekMessageA(&msg, 0, 0, 0, PM_REMOVE | PM_NOYIELD))
3765         {
3766             if (msg.message == WM_MOUSEMOVE)
3767             {
3768                 pt.x = SLOWORD(msg.lParam);
3769                 pt.y = SHIWORD(msg.lParam);
3770                 if (PtInRect(&r, pt))
3771                     continue;
3772                 else
3773                 {
3774                     ReleaseCapture();
3775                     return 1;
3776                 }
3777             }
3778             else if (msg.message >= WM_LBUTTONDOWN &&
3779                      msg.message <= WM_RBUTTONDBLCLK)
3780             {
3781                 if (msg.message == WM_RBUTTONUP)
3782                     TREEVIEW_RButtonUp(infoPtr, &pt);
3783                 break;
3784             }
3785
3786             DispatchMessageA(&msg);
3787         }
3788
3789         if (GetCapture() != infoPtr->hwnd)
3790             return 0;
3791     }
3792
3793     ReleaseCapture();
3794     return 0;
3795 }
3796
3797
3798 static LRESULT
3799 TREEVIEW_LButtonDoubleClick(TREEVIEW_INFO *infoPtr, LPARAM lParam)
3800 {
3801     TREEVIEW_ITEM *wineItem;
3802     TVHITTESTINFO hit;
3803
3804     TRACE("\n");
3805     SetFocus(infoPtr->hwnd);
3806
3807     if (infoPtr->Timer & TV_EDIT_TIMER_SET)
3808     {
3809         /* If there is pending 'edit label' event - kill it now */
3810         KillTimer(infoPtr->hwnd, TV_EDIT_TIMER);
3811     }
3812
3813     hit.pt.x = SLOWORD(lParam);
3814     hit.pt.y = SHIWORD(lParam);
3815
3816     wineItem = (TREEVIEW_ITEM *)TREEVIEW_HitTest(infoPtr, &hit);
3817     if (!wineItem)
3818         return 0;
3819     TRACE("item %d\n", TREEVIEW_GetItemIndex(infoPtr, wineItem));
3820
3821     if (TREEVIEW_SendSimpleNotify(infoPtr, NM_DBLCLK) == FALSE)
3822     {                           /* FIXME! */
3823         switch (hit.flags)
3824         {
3825         case TVHT_ONITEMRIGHT:
3826             /* FIXME: we should not have sent NM_DBLCLK in this case. */
3827             break;
3828
3829         case TVHT_ONITEMINDENT:
3830             if (!(infoPtr->dwStyle & TVS_HASLINES))
3831             {
3832                 break;
3833             }
3834             else
3835             {
3836                 int level = hit.pt.x / infoPtr->uIndent;
3837                 if (!(infoPtr->dwStyle & TVS_LINESATROOT)) level++;
3838
3839                 while (wineItem->iLevel > level)
3840                 {
3841                     wineItem = wineItem->parent;
3842                 }
3843
3844                 /* fall through */
3845             }
3846
3847         case TVHT_ONITEMLABEL:
3848         case TVHT_ONITEMICON:
3849         case TVHT_ONITEMBUTTON:
3850             TREEVIEW_Toggle(infoPtr, wineItem, TRUE);
3851             break;
3852
3853         case TVHT_ONITEMSTATEICON:
3854            if (infoPtr->dwStyle & TVS_CHECKBOXES)
3855                TREEVIEW_ToggleItemState(infoPtr, wineItem);
3856            else
3857                TREEVIEW_Toggle(infoPtr, wineItem, TRUE);
3858            break;
3859         }
3860     }
3861     return TRUE;
3862 }
3863
3864
3865 static LRESULT
3866 TREEVIEW_LButtonDown(TREEVIEW_INFO *infoPtr, LPARAM lParam)
3867 {
3868     HWND hwnd = infoPtr->hwnd;
3869     TVHITTESTINFO ht;
3870     BOOL bTrack;
3871     HTREEITEM tempItem;
3872
3873     /* If Edit control is active - kill it and return.
3874      * The best way to do it is to set focus to itself.
3875      * Edit control subclassed procedure will automatically call
3876      * EndEditLabelNow.
3877      */
3878     if (infoPtr->hwndEdit)
3879     {
3880         SetFocus(hwnd);
3881         return 0;
3882     }
3883
3884     ht.pt.x = SLOWORD(lParam);
3885     ht.pt.y = SHIWORD(lParam);
3886
3887     TREEVIEW_HitTest(infoPtr, &ht);
3888     TRACE("item %d\n", TREEVIEW_GetItemIndex(infoPtr, ht.hItem));
3889
3890     /* update focusedItem and redraw both items */
3891     if(ht.hItem && (ht.flags & TVHT_ONITEM))
3892     {
3893         infoPtr->focusedItem = ht.hItem;
3894         InvalidateRect(hwnd, &(((HTREEITEM)(ht.hItem))->rect), TRUE);
3895
3896         if(infoPtr->selectedItem)
3897             InvalidateRect(hwnd, &(infoPtr->selectedItem->rect), TRUE);
3898     }
3899
3900     bTrack = (ht.flags & TVHT_ONITEM)
3901         && !(infoPtr->dwStyle & TVS_DISABLEDRAGDROP);
3902
3903     /* Send NM_CLICK right away */
3904     if (!bTrack)
3905         if (TREEVIEW_SendSimpleNotify(infoPtr, NM_CLICK))
3906             goto setfocus;
3907
3908     if (ht.flags & TVHT_ONITEMBUTTON)
3909     {
3910         TREEVIEW_Toggle(infoPtr, ht.hItem, TRUE);
3911         goto setfocus;
3912     }
3913     else if (bTrack)
3914     {   /* if TREEVIEW_TrackMouse == 1 dragging occurred and the cursor left the dragged item's rectangle */
3915         if (TREEVIEW_TrackMouse(infoPtr, ht.pt))
3916         {
3917             TREEVIEW_SendTreeviewDnDNotify(infoPtr, TVN_BEGINDRAGW, ht.hItem, ht.pt);
3918             infoPtr->dropItem = ht.hItem;
3919
3920             /* clean up focusedItem as we dragged and won't select this item */
3921             if(infoPtr->focusedItem)
3922             {
3923                 /* refresh the item that was focused */
3924                 tempItem = infoPtr->focusedItem;
3925                 infoPtr->focusedItem = 0;
3926                 InvalidateRect(infoPtr->hwnd, &tempItem->rect, TRUE);
3927
3928                 /* refresh the selected item to return the filled background */
3929                 InvalidateRect(infoPtr->hwnd, &(infoPtr->selectedItem->rect), TRUE);
3930             }
3931
3932             return 0;
3933         }
3934     }
3935
3936     if (bTrack && TREEVIEW_SendSimpleNotify(infoPtr, NM_CLICK))
3937         goto setfocus;
3938
3939     /*
3940      * If the style allows editing and the node is already selected
3941      * and the click occurred on the item label...
3942      */
3943     if ((infoPtr->dwStyle & TVS_EDITLABELS) &&
3944                 (ht.flags & TVHT_ONITEMLABEL) && (infoPtr->selectedItem == ht.hItem))
3945     {
3946         if (infoPtr->Timer & TV_EDIT_TIMER_SET)
3947             KillTimer(hwnd, TV_EDIT_TIMER);
3948
3949         SetTimer(hwnd, TV_EDIT_TIMER, GetDoubleClickTime(), 0);
3950         infoPtr->Timer |= TV_EDIT_TIMER_SET;
3951     }
3952     else if (ht.flags & TVHT_ONITEM) /* select the item if the hit was inside of the icon or text */
3953     {
3954         /*
3955          * if we are TVS_SINGLEEXPAND then we want this single click to
3956          * do a bunch of things.
3957          */
3958         if((infoPtr->dwStyle & TVS_SINGLEEXPAND) &&
3959           (infoPtr->hwndEdit == 0))
3960         {
3961             TREEVIEW_ITEM *SelItem;
3962
3963             /*
3964              * Send the notification
3965              */
3966             TREEVIEW_SendTreeviewNotify(infoPtr, TVN_SINGLEEXPAND, TVC_UNKNOWN, TVIF_HANDLE | TVIF_PARAM, ht.hItem, 0);
3967
3968             /*
3969              * Close the previous selection all the way to the root
3970              * as long as the new selection is not a child
3971              */
3972             if((infoPtr->selectedItem)
3973                 && (infoPtr->selectedItem != ht.hItem))
3974             {
3975                 BOOL closeit = TRUE;
3976                 SelItem = ht.hItem;
3977
3978                 /* determine if the hitItem is a child of the currently selected item */
3979                 while(closeit && SelItem && TREEVIEW_ValidItem(infoPtr, SelItem) && (SelItem != infoPtr->root))
3980                 {
3981                     closeit = (SelItem != infoPtr->selectedItem);
3982                     SelItem = SelItem->parent;
3983                 }
3984
3985                 if(closeit)
3986                 {
3987                     if(TREEVIEW_ValidItem(infoPtr, infoPtr->selectedItem))
3988                         SelItem = infoPtr->selectedItem;
3989
3990                     while(SelItem && (SelItem != ht.hItem) && TREEVIEW_ValidItem(infoPtr, SelItem) && (SelItem != infoPtr->root))
3991                     {
3992                         TREEVIEW_Collapse(infoPtr, SelItem, FALSE, FALSE);
3993                         SelItem = SelItem->parent;
3994                     }
3995                 }
3996             }
3997
3998             /*
3999              * Expand the current item
4000              */
4001             TREEVIEW_Expand(infoPtr, ht.hItem, TVE_TOGGLE, FALSE);
4002         }
4003
4004         /* Select the current item */
4005         TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, ht.hItem, TVC_BYMOUSE);
4006     }
4007     else if (ht.flags & TVHT_ONITEMSTATEICON)
4008     {
4009         /* TVS_CHECKBOXES requires us to toggle the current state */
4010         if (infoPtr->dwStyle & TVS_CHECKBOXES)
4011             TREEVIEW_ToggleItemState(infoPtr, ht.hItem);
4012     }
4013
4014   setfocus:
4015     SetFocus(hwnd);
4016     return 0;
4017 }
4018
4019
4020 static LRESULT
4021 TREEVIEW_RButtonDown(TREEVIEW_INFO *infoPtr, LPARAM lParam)
4022 {
4023     TVHITTESTINFO ht;
4024
4025     if (infoPtr->hwndEdit)
4026     {
4027         SetFocus(infoPtr->hwnd);
4028         return 0;
4029     }
4030
4031     ht.pt.x = SLOWORD(lParam);
4032     ht.pt.y = SHIWORD(lParam);
4033
4034     TREEVIEW_HitTest(infoPtr, &ht);
4035
4036     if (TREEVIEW_TrackMouse(infoPtr, ht.pt))
4037     {
4038         if (ht.hItem)
4039         {
4040             TREEVIEW_SendTreeviewDnDNotify(infoPtr, TVN_BEGINRDRAGW, ht.hItem, ht.pt);
4041             infoPtr->dropItem = ht.hItem;
4042         }
4043     }
4044     else
4045     {
4046         SetFocus(infoPtr->hwnd);
4047         TREEVIEW_SendSimpleNotify(infoPtr, NM_RCLICK);
4048     }
4049
4050     return 0;
4051 }
4052
4053 static LRESULT
4054 TREEVIEW_RButtonUp(TREEVIEW_INFO *infoPtr, LPPOINT pPt)
4055 {
4056     return 0;
4057 }
4058
4059
4060 static LRESULT
4061 TREEVIEW_CreateDragImage(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
4062 {
4063     TREEVIEW_ITEM *dragItem = (HTREEITEM)lParam;
4064     INT cx, cy;
4065     HDC hdc, htopdc;
4066     HWND hwtop;
4067     HBITMAP hbmp, hOldbmp;
4068     SIZE size;
4069     RECT rc;
4070     HFONT hOldFont;
4071
4072     TRACE("\n");
4073
4074     if (!(infoPtr->himlNormal))
4075         return 0;
4076
4077     if (!dragItem || !TREEVIEW_ValidItem(infoPtr, dragItem))
4078         return 0;
4079
4080     TREEVIEW_UpdateDispInfo(infoPtr, dragItem, TVIF_TEXT);
4081
4082     hwtop = GetDesktopWindow();
4083     htopdc = GetDC(hwtop);
4084     hdc = CreateCompatibleDC(htopdc);
4085
4086     hOldFont = SelectObject(hdc, infoPtr->hFont);
4087     GetTextExtentPoint32A(hdc, dragItem->pszText, lstrlenA(dragItem->pszText),
4088                           &size);
4089     TRACE("%ld %ld %s %d\n", size.cx, size.cy, dragItem->pszText,
4090           lstrlenA(dragItem->pszText));
4091     hbmp = CreateCompatibleBitmap(htopdc, size.cx, size.cy);
4092     hOldbmp = SelectObject(hdc, hbmp);
4093
4094     ImageList_GetIconSize(infoPtr->himlNormal, &cx, &cy);
4095     size.cx += cx;
4096     if (cy > size.cy)
4097         size.cy = cy;
4098
4099     infoPtr->dragList = ImageList_Create(size.cx, size.cy, ILC_COLOR, 10, 10);
4100     ImageList_Draw(infoPtr->himlNormal, dragItem->iImage, hdc, 0, 0,
4101                    ILD_NORMAL);
4102
4103 /*
4104  ImageList_GetImageInfo (infoPtr->himlNormal, dragItem->hItem, &iminfo);
4105  ImageList_AddMasked (infoPtr->dragList, iminfo.hbmImage, CLR_DEFAULT);
4106 */
4107
4108 /* draw item text */
4109
4110     SetRect(&rc, cx, 0, size.cx, size.cy);
4111     DrawTextA(hdc, dragItem->pszText, lstrlenA(dragItem->pszText), &rc,
4112               DT_LEFT);
4113     SelectObject(hdc, hOldFont);
4114     SelectObject(hdc, hOldbmp);
4115
4116     ImageList_Add(infoPtr->dragList, hbmp, 0);
4117
4118     DeleteDC(hdc);
4119     DeleteObject(hbmp);
4120     ReleaseDC(hwtop, htopdc);
4121
4122     return (LRESULT)infoPtr->dragList;
4123 }
4124
4125 /* Selection ************************************************************/
4126
4127 static LRESULT
4128 TREEVIEW_DoSelectItem(TREEVIEW_INFO *infoPtr, INT action, HTREEITEM newSelect,
4129                       INT cause)
4130 {
4131     TREEVIEW_ITEM *prevSelect;
4132     RECT rcFocused;
4133
4134     assert(newSelect == NULL || TREEVIEW_ValidItem(infoPtr, newSelect));
4135
4136     TRACE("Entering item %p (%s), flag %x, cause %x, state %d\n",
4137           newSelect, TREEVIEW_ItemName(newSelect), action, cause,
4138           newSelect ? newSelect->state : 0);
4139
4140     /* reset and redraw focusedItem if focusedItem was set so we don't */
4141     /* have to worry about the previously focused item when we set a new one */
4142     if(infoPtr->focusedItem)
4143     {
4144         rcFocused = (infoPtr->focusedItem)->rect;
4145         infoPtr->focusedItem = 0;
4146         InvalidateRect(infoPtr->hwnd, &rcFocused, TRUE);
4147     }
4148
4149     switch (action)
4150     {
4151     case TVGN_CARET:
4152         prevSelect = infoPtr->selectedItem;
4153
4154         if (prevSelect == newSelect)
4155             return FALSE;
4156
4157         if (TREEVIEW_SendTreeviewNotify(infoPtr,
4158                                         TVN_SELCHANGINGW,
4159                                         cause,
4160                                         TVIF_HANDLE | TVIF_STATE | TVIF_PARAM,
4161                                         prevSelect,
4162                                         newSelect))
4163             return FALSE;
4164
4165         if (prevSelect)
4166             prevSelect->state &= ~TVIS_SELECTED;
4167         if (newSelect)
4168             newSelect->state |= TVIS_SELECTED;
4169
4170         infoPtr->selectedItem = newSelect;
4171
4172         TREEVIEW_EnsureVisible(infoPtr, infoPtr->selectedItem, FALSE);
4173
4174         TREEVIEW_SendTreeviewNotify(infoPtr,
4175                                     TVN_SELCHANGEDW,
4176                                     cause,
4177                                     TVIF_HANDLE | TVIF_STATE | TVIF_PARAM,
4178                                     prevSelect,
4179                                     newSelect);
4180         TREEVIEW_Invalidate(infoPtr, prevSelect);
4181         TREEVIEW_Invalidate(infoPtr, newSelect);
4182         break;
4183
4184     case TVGN_DROPHILITE:
4185         prevSelect = infoPtr->dropItem;
4186
4187         if (prevSelect)
4188             prevSelect->state &= ~TVIS_DROPHILITED;
4189
4190         infoPtr->dropItem = newSelect;
4191
4192         if (newSelect)
4193             newSelect->state |= TVIS_DROPHILITED;
4194
4195         TREEVIEW_Invalidate(infoPtr, prevSelect);
4196         TREEVIEW_Invalidate(infoPtr, newSelect);
4197         break;
4198
4199     case TVGN_FIRSTVISIBLE:
4200         TREEVIEW_EnsureVisible(infoPtr, newSelect, FALSE);
4201         TREEVIEW_SetFirstVisible(infoPtr, newSelect, TRUE);
4202         TREEVIEW_Invalidate(infoPtr, NULL);
4203         break;
4204     }
4205
4206     TRACE("Leaving state %d\n", newSelect ? newSelect->state : 0);
4207     return TRUE;
4208 }
4209
4210 /* FIXME: handle NM_KILLFOCUS etc */
4211 static LRESULT
4212 TREEVIEW_SelectItem(TREEVIEW_INFO *infoPtr, INT wParam, HTREEITEM item)
4213 {
4214     if (item != NULL && !TREEVIEW_ValidItem(infoPtr, item))
4215         return FALSE;
4216
4217     TRACE("%p (%s) %d\n", item, TREEVIEW_ItemName(item), wParam);
4218
4219     if (!TREEVIEW_DoSelectItem(infoPtr, wParam, item, TVC_UNKNOWN))
4220         return FALSE;
4221
4222     return TRUE;
4223 }
4224
4225 /*************************************************************************
4226  *              TREEVIEW_ProcessLetterKeys
4227  *
4228  *  Processes keyboard messages generated by pressing the letter keys
4229  *  on the keyboard.
4230  *  What this does is perform a case insensitive search from the
4231  *  current position with the following quirks:
4232  *  - If two chars or more are pressed in quick succession we search
4233  *    for the corresponding string (e.g. 'abc').
4234  *  - If there is a delay we wipe away the current search string and
4235  *    restart with just that char.
4236  *  - If the user keeps pressing the same character, whether slowly or
4237  *    fast, so that the search string is entirely composed of this
4238  *    character ('aaaaa' for instance), then we search for first item
4239  *    that starting with that character.
4240  *  - If the user types the above character in quick succession, then
4241  *    we must also search for the corresponding string ('aaaaa'), and
4242  *    go to that string if there is a match.
4243  *
4244  * RETURNS
4245  *
4246  *  Zero.
4247  *
4248  * BUGS
4249  *
4250  *  - The current implementation has a list of characters it will
4251  *    accept and it ignores averything else. In particular it will
4252  *    ignore accentuated characters which seems to match what
4253  *    Windows does. But I'm not sure it makes sense to follow
4254  *    Windows there.
4255  *  - We don't sound a beep when the search fails.
4256  *  - The search should start from the focused item, not from the selected
4257  *    item. One reason for this is to allow for multiple selections in trees.
4258  *    But currently infoPtr->focusedItem does not seem very usable.
4259  *
4260  * SEE ALSO
4261  *
4262  *  TREEVIEW_ProcessLetterKeys
4263  */
4264 static INT TREEVIEW_ProcessLetterKeys(
4265     HWND hwnd, /* handle to the window */
4266     WPARAM charCode, /* the character code, the actual character */
4267     LPARAM keyData /* key data */
4268     )
4269 {
4270     TREEVIEW_INFO *infoPtr;
4271     HTREEITEM nItem;
4272     HTREEITEM endidx,idx;
4273     TVITEMEXA item;
4274     CHAR buffer[MAX_PATH];
4275     DWORD timestamp,elapsed;
4276
4277     /* simple parameter checking */
4278     if (!hwnd || !charCode || !keyData)
4279         return 0;
4280
4281     infoPtr=(TREEVIEW_INFO*)GetWindowLongA(hwnd, 0);
4282     if (!infoPtr)
4283         return 0;
4284
4285     /* only allow the valid WM_CHARs through */
4286     if (!isalnum(charCode) &&
4287         charCode != '.' && charCode != '`' && charCode != '!' &&
4288         charCode != '@' && charCode != '#' && charCode != '$' &&
4289         charCode != '%' && charCode != '^' && charCode != '&' &&
4290         charCode != '*' && charCode != '(' && charCode != ')' &&
4291         charCode != '-' && charCode != '_' && charCode != '+' &&
4292         charCode != '=' && charCode != '\\'&& charCode != ']' &&
4293         charCode != '}' && charCode != '[' && charCode != '{' &&
4294         charCode != '/' && charCode != '?' && charCode != '>' &&
4295         charCode != '<' && charCode != ',' && charCode != '~')
4296         return 0;
4297
4298     /* compute how much time elapsed since last keypress */
4299     timestamp = GetTickCount();
4300     if (timestamp > infoPtr->lastKeyPressTimestamp) {
4301         elapsed=timestamp-infoPtr->lastKeyPressTimestamp;
4302     } else {
4303         elapsed=infoPtr->lastKeyPressTimestamp-timestamp;
4304     }
4305
4306     /* update the search parameters */
4307     infoPtr->lastKeyPressTimestamp=timestamp;
4308     if (elapsed < KEY_DELAY) {
4309         if (infoPtr->nSearchParamLength < sizeof(infoPtr->szSearchParam)) {
4310             infoPtr->szSearchParam[infoPtr->nSearchParamLength++]=charCode;
4311         }
4312         if (infoPtr->charCode != charCode) {
4313             infoPtr->charCode=charCode=0;
4314         }
4315     } else {
4316         infoPtr->charCode=charCode;
4317         infoPtr->szSearchParam[0]=charCode;
4318         infoPtr->nSearchParamLength=1;
4319         /* Redundant with the 1 char string */
4320         charCode=0;
4321     }
4322
4323     /* and search from the current position */
4324     nItem=NULL;
4325     if (infoPtr->selectedItem != NULL) {
4326         endidx=infoPtr->selectedItem;
4327         /* if looking for single character match,
4328          * then we must always move forward
4329          */
4330         if (infoPtr->nSearchParamLength == 1)
4331             idx=TREEVIEW_GetNextListItem(infoPtr,endidx);
4332         else
4333             idx=endidx;
4334     } else {
4335         endidx=NULL;
4336         idx=infoPtr->root->firstChild;
4337     }
4338     do {
4339         if (idx == NULL) {
4340             if (endidx == NULL)
4341                 break;
4342             idx=infoPtr->root->firstChild;
4343         }
4344
4345         /* get item */
4346         ZeroMemory(&item, sizeof(item));
4347         item.mask = TVIF_TEXT;
4348         item.hItem = idx;
4349         item.pszText = buffer;
4350         item.cchTextMax = sizeof(buffer);
4351         TREEVIEW_GetItemA( infoPtr, &item );
4352
4353         /* check for a match */
4354         if (strncasecmp(item.pszText,infoPtr->szSearchParam,infoPtr->nSearchParamLength) == 0) {
4355             nItem=idx;
4356             break;
4357         } else if ( (charCode != 0) && (nItem == NULL) &&
4358                     (nItem != infoPtr->selectedItem) &&
4359                     (strncasecmp(item.pszText,infoPtr->szSearchParam,1) == 0) ) {
4360             /* This would work but we must keep looking for a longer match */
4361             nItem=idx;
4362         }
4363         idx=TREEVIEW_GetNextListItem(infoPtr,idx);
4364     } while (idx != endidx);
4365
4366     if (nItem != NULL) {
4367         if (TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, nItem, TVC_BYKEYBOARD)) {
4368             TREEVIEW_EnsureVisible(infoPtr, nItem, FALSE);
4369         }
4370     }
4371
4372     return 0;
4373 }
4374
4375 /* Scrolling ************************************************************/
4376
4377 static LRESULT
4378 TREEVIEW_EnsureVisible(TREEVIEW_INFO *infoPtr, HTREEITEM item, BOOL bHScroll)
4379 {
4380     HTREEITEM newFirstVisible = NULL;
4381     int visible_pos;
4382
4383     if (!TREEVIEW_ValidItem(infoPtr, item))
4384         return FALSE;
4385
4386     if (!ISVISIBLE(item))
4387     {
4388         /* Expand parents as necessary. */
4389         HTREEITEM parent;
4390
4391         /* see if we are trying to ensure that root is vislble */
4392         if((item != infoPtr->root) && TREEVIEW_ValidItem(infoPtr, item))
4393           parent = item->parent;
4394         else
4395           parent = item; /* this item is the topmost item */
4396
4397         while (parent != infoPtr->root)
4398         {
4399             if (!(parent->state & TVIS_EXPANDED))
4400                 TREEVIEW_Expand(infoPtr, parent, FALSE, FALSE);
4401
4402             parent = parent->parent;
4403         }
4404     }
4405
4406     TRACE("%p (%s) %ld - %ld\n", item, TREEVIEW_ItemName(item), item->visibleOrder,
4407           infoPtr->firstVisible->visibleOrder);
4408
4409     visible_pos = item->visibleOrder - infoPtr->firstVisible->visibleOrder;
4410
4411     if (visible_pos < 0)
4412     {
4413         /* item is before the start of the list: put it at the top. */
4414         newFirstVisible = item;
4415     }
4416     else if (visible_pos >= TREEVIEW_GetVisibleCount(infoPtr)
4417              /* Sometimes, before we are displayed, GVC is 0, causing us to
4418               * spuriously scroll up. */
4419              && visible_pos > 0)
4420     {
4421         /* item is past the end of the list. */
4422         int scroll = visible_pos - TREEVIEW_GetVisibleCount(infoPtr);
4423
4424         newFirstVisible = TREEVIEW_GetListItem(infoPtr, infoPtr->firstVisible,
4425                                                scroll + 1);
4426     }
4427
4428     if (bHScroll)
4429     {
4430         /* Scroll window so item's text is visible as much as possible */
4431         /* Calculation of amount of extra space is taken from EditLabel code */
4432         INT pos, x;
4433         TEXTMETRICA textMetric;
4434         HDC hdc = GetWindowDC(infoPtr->hwnd);
4435
4436         x = item->textWidth;
4437
4438         GetTextMetricsA(hdc, &textMetric);
4439         ReleaseDC(infoPtr->hwnd, hdc);
4440
4441         x += (textMetric.tmMaxCharWidth * 2);
4442         x = max(x, textMetric.tmMaxCharWidth * 3);
4443
4444         if (item->textOffset < 0)
4445            pos = item->textOffset;
4446         else if (item->textOffset + x > infoPtr->clientWidth)
4447         {
4448            if (x > infoPtr->clientWidth)
4449               pos = item->textOffset;
4450            else
4451               pos = item->textOffset + x - infoPtr->clientWidth;
4452         }
4453         else
4454            pos = 0;
4455
4456         TREEVIEW_HScroll(infoPtr, MAKEWPARAM(SB_THUMBPOSITION, infoPtr->scrollX + pos));
4457     }
4458
4459     if (newFirstVisible != NULL && newFirstVisible != infoPtr->firstVisible)
4460     {
4461         TREEVIEW_SetFirstVisible(infoPtr, newFirstVisible, TRUE);
4462
4463         return TRUE;
4464     }
4465
4466     return FALSE;
4467 }
4468
4469 static VOID
4470 TREEVIEW_SetFirstVisible(TREEVIEW_INFO *infoPtr,
4471                          TREEVIEW_ITEM *newFirstVisible,
4472                          BOOL bUpdateScrollPos)
4473 {
4474     int gap_size;
4475
4476     TRACE("%p: %s\n", newFirstVisible, TREEVIEW_ItemName(newFirstVisible));
4477
4478     if (newFirstVisible != NULL)
4479     {
4480         /* Prevent an empty gap from appearing at the bottom... */
4481         gap_size = TREEVIEW_GetVisibleCount(infoPtr)
4482             - infoPtr->maxVisibleOrder + newFirstVisible->visibleOrder;
4483
4484         if (gap_size > 0)
4485         {
4486             newFirstVisible = TREEVIEW_GetListItem(infoPtr, newFirstVisible,
4487                                                    -gap_size);
4488
4489             /* ... unless we just don't have enough items. */
4490             if (newFirstVisible == NULL)
4491                 newFirstVisible = infoPtr->root->firstChild;
4492         }
4493     }
4494
4495     if (infoPtr->firstVisible != newFirstVisible)
4496     {
4497         if (infoPtr->firstVisible == NULL || newFirstVisible == NULL)
4498         {
4499             infoPtr->firstVisible = newFirstVisible;
4500             TREEVIEW_Invalidate(infoPtr, NULL);
4501         }
4502         else
4503         {
4504             TREEVIEW_ITEM *item;
4505             int scroll = infoPtr->uItemHeight *
4506                          (infoPtr->firstVisible->visibleOrder
4507                           - newFirstVisible->visibleOrder);
4508
4509             infoPtr->firstVisible = newFirstVisible;
4510
4511             for (item = infoPtr->root->firstChild; item != NULL;
4512                  item = TREEVIEW_GetNextListItem(infoPtr, item))
4513             {
4514                item->rect.top += scroll;
4515                item->rect.bottom += scroll;
4516             }
4517
4518             if (bUpdateScrollPos)
4519                 SetScrollPos(infoPtr->hwnd, SB_VERT,
4520                               newFirstVisible->visibleOrder, TRUE);
4521
4522             ScrollWindow(infoPtr->hwnd, 0, scroll, NULL, NULL);
4523             UpdateWindow(infoPtr->hwnd);
4524         }
4525     }
4526 }
4527
4528 /************************************************************************
4529  * VScroll is always in units of visible items. i.e. we always have a
4530  * visible item aligned to the top of the control. (Unless we have no
4531  * items at all.)
4532  */
4533 static LRESULT
4534 TREEVIEW_VScroll(TREEVIEW_INFO *infoPtr, WPARAM wParam)
4535 {
4536     TREEVIEW_ITEM *oldFirstVisible = infoPtr->firstVisible;
4537     TREEVIEW_ITEM *newFirstVisible = NULL;
4538
4539     int nScrollCode = LOWORD(wParam);
4540
4541     TRACE("wp %x\n", wParam);
4542
4543     if (!(infoPtr->uInternalStatus & TV_VSCROLL))
4544         return 0;
4545
4546     if (infoPtr->hwndEdit)
4547         SetFocus(infoPtr->hwnd);
4548
4549     if (!oldFirstVisible)
4550     {
4551         assert(infoPtr->root->firstChild == NULL);
4552         return 0;
4553     }
4554
4555     switch (nScrollCode)
4556     {
4557     case SB_TOP:
4558         newFirstVisible = infoPtr->root->firstChild;
4559         break;
4560
4561     case SB_BOTTOM:
4562         newFirstVisible = TREEVIEW_GetLastListItem(infoPtr, infoPtr->root);
4563         break;
4564
4565     case SB_LINEUP:
4566         newFirstVisible = TREEVIEW_GetPrevListItem(infoPtr, oldFirstVisible);
4567         break;
4568
4569     case SB_LINEDOWN:
4570         newFirstVisible = TREEVIEW_GetNextListItem(infoPtr, oldFirstVisible);
4571         break;
4572
4573     case SB_PAGEUP:
4574         newFirstVisible = TREEVIEW_GetListItem(infoPtr, oldFirstVisible,
4575                                                -max(1, TREEVIEW_GetVisibleCount(infoPtr)));
4576         break;
4577
4578     case SB_PAGEDOWN:
4579         newFirstVisible = TREEVIEW_GetListItem(infoPtr, oldFirstVisible,
4580                                                max(1, TREEVIEW_GetVisibleCount(infoPtr)));
4581         break;
4582
4583     case SB_THUMBTRACK:
4584     case SB_THUMBPOSITION:
4585         newFirstVisible = TREEVIEW_GetListItem(infoPtr,
4586                                                infoPtr->root->firstChild,
4587                                                (LONG)(SHORT)HIWORD(wParam));
4588         break;
4589
4590     case SB_ENDSCROLL:
4591         return 0;
4592     }
4593
4594     if (newFirstVisible != NULL)
4595     {
4596         if (newFirstVisible != oldFirstVisible)
4597             TREEVIEW_SetFirstVisible(infoPtr, newFirstVisible,
4598                                   nScrollCode != SB_THUMBTRACK);
4599         else if (nScrollCode == SB_THUMBPOSITION)
4600             SetScrollPos(infoPtr->hwnd, SB_VERT,
4601                          newFirstVisible->visibleOrder, TRUE);
4602     }
4603
4604     return 0;
4605 }
4606
4607 static LRESULT
4608 TREEVIEW_HScroll(TREEVIEW_INFO *infoPtr, WPARAM wParam)
4609 {
4610     int maxWidth;
4611     int scrollX = infoPtr->scrollX;
4612     int nScrollCode = LOWORD(wParam);
4613
4614     TRACE("wp %x\n", wParam);
4615
4616     if (!(infoPtr->uInternalStatus & TV_HSCROLL))
4617         return FALSE;
4618
4619     if (infoPtr->hwndEdit)
4620         SetFocus(infoPtr->hwnd);
4621
4622     maxWidth = infoPtr->treeWidth - infoPtr->clientWidth;
4623     /* shall never occur */
4624     if (maxWidth <= 0)
4625     {
4626        scrollX = 0;
4627        goto scroll;
4628     }
4629
4630     switch (nScrollCode)
4631     {
4632     case SB_LINELEFT:
4633         scrollX -= infoPtr->uItemHeight;
4634         break;
4635     case SB_LINERIGHT:
4636         scrollX += infoPtr->uItemHeight;
4637         break;
4638     case SB_PAGELEFT:
4639         scrollX -= infoPtr->clientWidth;
4640         break;
4641     case SB_PAGERIGHT:
4642         scrollX += infoPtr->clientWidth;
4643         break;
4644
4645     case SB_THUMBTRACK:
4646     case SB_THUMBPOSITION:
4647         scrollX = (int)(SHORT)HIWORD(wParam);
4648         break;
4649
4650     case SB_ENDSCROLL:
4651        return 0;
4652     }
4653
4654     if (scrollX > maxWidth)
4655         scrollX = maxWidth;
4656     else if (scrollX < 0)
4657         scrollX = 0;
4658
4659 scroll:
4660     if (scrollX != infoPtr->scrollX)
4661     {
4662         TREEVIEW_ITEM *item;
4663         LONG scroll_pixels = infoPtr->scrollX - scrollX;
4664
4665         for (item = infoPtr->root->firstChild; item != NULL;
4666              item = TREEVIEW_GetNextListItem(infoPtr, item))
4667         {
4668            item->linesOffset += scroll_pixels;
4669            item->stateOffset += scroll_pixels;
4670            item->imageOffset += scroll_pixels;
4671            item->textOffset  += scroll_pixels;
4672         }
4673
4674         ScrollWindow(infoPtr->hwnd, scroll_pixels, 0, NULL, NULL);
4675         infoPtr->scrollX = scrollX;
4676         UpdateWindow(infoPtr->hwnd);
4677     }
4678
4679     if (nScrollCode != SB_THUMBTRACK)
4680        SetScrollPos(infoPtr->hwnd, SB_HORZ, scrollX, TRUE);
4681
4682     return 0;
4683 }
4684
4685 static LRESULT
4686 TREEVIEW_MouseWheel(TREEVIEW_INFO *infoPtr, WPARAM wParam)
4687 {
4688     short gcWheelDelta;
4689     UINT pulScrollLines = 3;
4690
4691     if (infoPtr->firstVisible == NULL)
4692         return TRUE;
4693
4694     SystemParametersInfoW(SPI_GETWHEELSCROLLLINES, 0, &pulScrollLines, 0);
4695
4696     gcWheelDelta = -(short)HIWORD(wParam);
4697     pulScrollLines *= (gcWheelDelta / WHEEL_DELTA);
4698
4699     if (abs(gcWheelDelta) >= WHEEL_DELTA && pulScrollLines)
4700     {
4701         int newDy = infoPtr->firstVisible->visibleOrder + pulScrollLines;
4702         int maxDy = infoPtr->maxVisibleOrder;
4703
4704         if (newDy > maxDy)
4705             newDy = maxDy;
4706
4707         if (newDy < 0)
4708             newDy = 0;
4709
4710         TREEVIEW_VScroll(infoPtr, MAKEWPARAM(SB_THUMBPOSITION, newDy));
4711     }
4712     return TRUE;
4713 }
4714
4715 /* Create/Destroy *******************************************************/
4716
4717 static LRESULT
4718 TREEVIEW_Create(HWND hwnd)
4719 {
4720     RECT rcClient;
4721     TREEVIEW_INFO *infoPtr;
4722
4723     TRACE("wnd %p, style %lx\n", hwnd, GetWindowLongA(hwnd, GWL_STYLE));
4724
4725     infoPtr = (TREEVIEW_INFO *)COMCTL32_Alloc(sizeof(TREEVIEW_INFO));
4726
4727     if (infoPtr == NULL)
4728     {
4729         ERR("could not allocate info memory!\n");
4730         return 0;
4731     }
4732
4733     SetWindowLongA(hwnd, 0, (DWORD)infoPtr);
4734
4735     infoPtr->hwnd = hwnd;
4736     infoPtr->dwStyle = GetWindowLongA(hwnd, GWL_STYLE);
4737     infoPtr->uInternalStatus = 0;
4738     infoPtr->Timer = 0;
4739     infoPtr->uNumItems = 0;
4740     infoPtr->cdmode = 0;
4741     infoPtr->uScrollTime = 300; /* milliseconds */
4742     infoPtr->bRedraw = TRUE;
4743
4744     GetClientRect(hwnd, &rcClient);
4745
4746     /* No scroll bars yet. */
4747     infoPtr->clientWidth = rcClient.right;
4748     infoPtr->clientHeight = rcClient.bottom;
4749
4750     infoPtr->treeWidth = 0;
4751     infoPtr->treeHeight = 0;
4752
4753     infoPtr->uIndent = 19;
4754     infoPtr->selectedItem = 0;
4755     infoPtr->focusedItem = 0;
4756     /* hotItem? */
4757     infoPtr->firstVisible = 0;
4758     infoPtr->maxVisibleOrder = 0;
4759     infoPtr->dropItem = 0;
4760     infoPtr->insertMarkItem = 0;
4761     infoPtr->insertBeforeorAfter = 0;
4762     /* dragList */
4763
4764     infoPtr->scrollX = 0;
4765
4766     infoPtr->clrBk = GetSysColor(COLOR_WINDOW);
4767     infoPtr->clrText = -1;      /* use system color */
4768     infoPtr->clrLine = RGB(128, 128, 128);
4769     infoPtr->clrInsertMark = GetSysColor(COLOR_BTNTEXT);
4770
4771     /* hwndToolTip */
4772
4773     infoPtr->hwndEdit = 0;
4774     infoPtr->wpEditOrig = NULL;
4775     infoPtr->bIgnoreEditKillFocus = FALSE;
4776     infoPtr->bLabelChanged = FALSE;
4777
4778     infoPtr->himlNormal = NULL;
4779     infoPtr->himlState = NULL;
4780     infoPtr->normalImageWidth = 0;
4781     infoPtr->normalImageHeight = 0;
4782     infoPtr->stateImageWidth = 0;
4783     infoPtr->stateImageHeight = 0;
4784
4785     infoPtr->items = DPA_Create(16);
4786
4787     infoPtr->hFont = GetStockObject(DEFAULT_GUI_FONT);
4788     infoPtr->hBoldFont = TREEVIEW_CreateBoldFont(infoPtr->hFont);
4789
4790     infoPtr->uItemHeight = TREEVIEW_NaturalHeight(infoPtr);
4791
4792     infoPtr->root = TREEVIEW_AllocateItem(infoPtr);
4793     infoPtr->root->state = TVIS_EXPANDED;
4794     infoPtr->root->iLevel = -1;
4795     infoPtr->root->visibleOrder = -1;
4796
4797     infoPtr->hwndNotify = GetParent(hwnd);
4798 #if 0
4799     infoPtr->bTransparent = ( GetWindowLongA( hwnd, GWL_STYLE) & TBSTYLE_FLAT);
4800 #endif
4801
4802     infoPtr->hwndToolTip = 0;
4803
4804     infoPtr->bUnicode = IsWindowUnicode (hwnd);
4805
4806     /* Determine what type of notify should be issued */
4807     /* sets infoPtr->bNtfUnicode */
4808     TREEVIEW_NotifyFormat(infoPtr, infoPtr->hwndNotify, NF_REQUERY);
4809
4810     if (!(infoPtr->dwStyle & TVS_NOTOOLTIPS))
4811         infoPtr->hwndToolTip = COMCTL32_CreateToolTip(hwnd);
4812
4813     if (infoPtr->dwStyle & TVS_CHECKBOXES)
4814     {
4815         RECT rc;
4816         HBITMAP hbm, hbmOld;
4817         HDC hdc;
4818         int nIndex;
4819
4820         infoPtr->himlState =
4821             ImageList_Create(16, 16, ILC_COLOR | ILC_MASK, 3, 0);
4822
4823         hdc = CreateCompatibleDC(0);
4824         hbm = CreateCompatibleBitmap(hdc, 48, 16);
4825         hbmOld = SelectObject(hdc, hbm);
4826
4827         rc.left  = 0;   rc.top    = 0;
4828         rc.right = 48;  rc.bottom = 16;
4829         FillRect(hdc, &rc, (HBRUSH)(COLOR_WINDOW+1));
4830
4831         rc.left  = 18;   rc.top    = 2;
4832         rc.right = 30;   rc.bottom = 14;
4833         DrawFrameControl(hdc, &rc, DFC_BUTTON,
4834                           DFCS_BUTTONCHECK|DFCS_FLAT);
4835
4836         rc.left  = 34;   rc.right  = 46;
4837         DrawFrameControl(hdc, &rc, DFC_BUTTON,
4838                           DFCS_BUTTONCHECK|DFCS_FLAT|DFCS_CHECKED);
4839
4840         nIndex = ImageList_AddMasked(infoPtr->himlState, hbm,
4841                                       GetSysColor(COLOR_WINDOW));
4842         TRACE("chckbox index %d\n", nIndex);
4843         SelectObject(hdc, hbmOld);
4844         DeleteObject(hbm);
4845         DeleteDC(hdc);
4846
4847         infoPtr->stateImageWidth = 16;
4848         infoPtr->stateImageHeight = 16;
4849     }
4850     return 0;
4851 }
4852
4853
4854 static LRESULT
4855 TREEVIEW_Destroy(TREEVIEW_INFO *infoPtr)
4856 {
4857     TRACE("\n");
4858
4859     TREEVIEW_RemoveTree(infoPtr);
4860
4861     /* tool tip is automatically destroyed: we are its owner */
4862
4863     /* Restore original wndproc */
4864     if (infoPtr->hwndEdit)
4865         SetWindowLongA(infoPtr->hwndEdit, GWL_WNDPROC,
4866                        (LONG)infoPtr->wpEditOrig);
4867
4868     /* Deassociate treeview from the window before doing anything drastic. */
4869     SetWindowLongA(infoPtr->hwnd, 0, (LONG)NULL);
4870
4871     DeleteObject(infoPtr->hBoldFont);
4872     COMCTL32_Free(infoPtr);
4873
4874     return 0;
4875 }
4876
4877 /* Miscellaneous Messages ***********************************************/
4878
4879 static LRESULT
4880 TREEVIEW_ScrollKeyDown(TREEVIEW_INFO *infoPtr, WPARAM key)
4881 {
4882     static const struct
4883     {
4884         unsigned char code;
4885     }
4886     scroll[] =
4887     {
4888 #define SCROLL_ENTRY(dir, code) { ((dir) << 7) | (code) }
4889         SCROLL_ENTRY(SB_VERT, SB_PAGEUP),       /* VK_PRIOR */
4890         SCROLL_ENTRY(SB_VERT, SB_PAGEDOWN),     /* VK_NEXT */
4891         SCROLL_ENTRY(SB_VERT, SB_BOTTOM),       /* VK_END */
4892         SCROLL_ENTRY(SB_VERT, SB_TOP),          /* VK_HOME */
4893         SCROLL_ENTRY(SB_HORZ, SB_LINEUP),       /* VK_LEFT */
4894         SCROLL_ENTRY(SB_VERT, SB_LINEUP),       /* VK_UP */
4895         SCROLL_ENTRY(SB_HORZ, SB_LINEDOWN),     /* VK_RIGHT */
4896         SCROLL_ENTRY(SB_VERT, SB_LINEDOWN)      /* VK_DOWN */
4897 #undef SCROLL_ENTRY
4898     };
4899
4900     if (key >= VK_PRIOR && key <= VK_DOWN)
4901     {
4902         unsigned char code = scroll[key - VK_PRIOR].code;
4903
4904         (((code & (1 << 7)) == (SB_HORZ << 7))
4905          ? TREEVIEW_HScroll
4906          : TREEVIEW_VScroll)(infoPtr, code & 0x7F);
4907     }
4908
4909     return 0;
4910 }
4911
4912 /************************************************************************
4913  *        TREEVIEW_KeyDown
4914  *
4915  * VK_UP       Move selection to the previous non-hidden item.
4916  * VK_DOWN     Move selection to the next non-hidden item.
4917  * VK_HOME     Move selection to the first item.
4918  * VK_END      Move selection to the last item.
4919  * VK_LEFT     If expanded then collapse, otherwise move to parent.
4920  * VK_RIGHT    If collapsed then expand, otherwise move to first child.
4921  * VK_ADD      Expand.
4922  * VK_SUBTRACT Collapse.
4923  * VK_MULTIPLY Expand all.
4924  * VK_PRIOR    Move up GetVisibleCount items.
4925  * VK_NEXT     Move down GetVisibleCount items.
4926  * VK_BACK     Move to parent.
4927  * CTRL-Left,Right,Up,Down,PgUp,PgDown,Home,End: Scroll without changing selection
4928  */
4929 static LRESULT
4930 TREEVIEW_KeyDown(TREEVIEW_INFO *infoPtr, WPARAM wParam)
4931 {
4932     /* If it is non-NULL and different, it will be selected and visible. */
4933     TREEVIEW_ITEM *newSelection = NULL;
4934
4935     TREEVIEW_ITEM *prevItem = infoPtr->selectedItem;
4936
4937     TRACE("%x\n", wParam);
4938
4939     if (prevItem == NULL)
4940         return FALSE;
4941
4942     if (GetAsyncKeyState(VK_CONTROL) & 0x8000)
4943         return TREEVIEW_ScrollKeyDown(infoPtr, wParam);
4944
4945     switch (wParam)
4946     {
4947     case VK_UP:
4948         newSelection = TREEVIEW_GetPrevListItem(infoPtr, prevItem);
4949         if (!newSelection)
4950             newSelection = infoPtr->root->firstChild;
4951         break;
4952
4953     case VK_DOWN:
4954         newSelection = TREEVIEW_GetNextListItem(infoPtr, prevItem);
4955         break;
4956
4957     case VK_HOME:
4958         newSelection = infoPtr->root->firstChild;
4959         break;
4960
4961     case VK_END:
4962         newSelection = TREEVIEW_GetLastListItem(infoPtr, infoPtr->root);
4963         break;
4964
4965     case VK_LEFT:
4966         if (prevItem->state & TVIS_EXPANDED)
4967         {
4968             TREEVIEW_Collapse(infoPtr, prevItem, FALSE, TRUE);
4969         }
4970         else if (prevItem->parent != infoPtr->root)
4971         {
4972             newSelection = prevItem->parent;
4973         }
4974         break;
4975
4976     case VK_RIGHT:
4977         if (TREEVIEW_HasChildren(infoPtr, prevItem))
4978         {
4979             if (!(prevItem->state & TVIS_EXPANDED))
4980                 TREEVIEW_Expand(infoPtr, prevItem, FALSE, TRUE);
4981             else
4982             {
4983                 newSelection = prevItem->firstChild;
4984             }
4985         }
4986
4987         break;
4988
4989     case VK_MULTIPLY:
4990         TREEVIEW_ExpandAll(infoPtr, prevItem);
4991         break;
4992
4993     case VK_ADD:
4994         if (!(prevItem->state & TVIS_EXPANDED))
4995             TREEVIEW_Expand(infoPtr, prevItem, FALSE, TRUE);
4996         break;
4997
4998     case VK_SUBTRACT:
4999         if (prevItem->state & TVIS_EXPANDED)
5000             TREEVIEW_Collapse(infoPtr, prevItem, FALSE, TRUE);
5001         break;
5002
5003     case VK_PRIOR:
5004         newSelection
5005             = TREEVIEW_GetListItem(infoPtr, prevItem,
5006                                    -TREEVIEW_GetVisibleCount(infoPtr));
5007         break;
5008
5009     case VK_NEXT:
5010         newSelection
5011             = TREEVIEW_GetListItem(infoPtr, prevItem,
5012                                    TREEVIEW_GetVisibleCount(infoPtr));
5013         break;
5014
5015     case VK_BACK:
5016         newSelection = prevItem->parent;
5017         if (newSelection == infoPtr->root)
5018             newSelection = NULL;
5019         break;
5020
5021     case VK_SPACE:
5022         if (infoPtr->dwStyle & TVS_CHECKBOXES)
5023             TREEVIEW_ToggleItemState(infoPtr, prevItem);
5024         break;
5025     }
5026
5027     if (newSelection && newSelection != prevItem)
5028     {
5029         if (TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, newSelection,
5030                                   TVC_BYKEYBOARD))
5031         {
5032             TREEVIEW_EnsureVisible(infoPtr, newSelection, FALSE);
5033         }
5034     }
5035
5036     return FALSE;
5037 }
5038
5039 static LRESULT
5040 TREEVIEW_Notify(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
5041 {
5042     LPNMHDR lpnmh = (LPNMHDR)lParam;
5043
5044     if (lpnmh->code == PGN_CALCSIZE) {
5045         LPNMPGCALCSIZE lppgc = (LPNMPGCALCSIZE)lParam;
5046
5047         if (lppgc->dwFlag == PGF_CALCWIDTH) {
5048             lppgc->iWidth = infoPtr->treeWidth;
5049             TRACE("got PGN_CALCSIZE, returning horz size = %ld, client=%ld\n",
5050                   infoPtr->treeWidth, infoPtr->clientWidth);
5051         }
5052         else {
5053             lppgc->iHeight = infoPtr->treeHeight;
5054             TRACE("got PGN_CALCSIZE, returning vert size = %ld, client=%ld\n",
5055                   infoPtr->treeHeight, infoPtr->clientHeight);
5056         }
5057         return 0;
5058     }
5059     return DefWindowProcA(infoPtr->hwnd, WM_NOTIFY, wParam, lParam);
5060 }
5061
5062 static INT TREEVIEW_NotifyFormat (TREEVIEW_INFO *infoPtr, HWND hwndFrom, UINT nCommand)
5063 {
5064     INT format;
5065
5066     TRACE("(hwndFrom=%p, nCommand=%d)\n", hwndFrom, nCommand);
5067
5068     if (nCommand != NF_REQUERY) return 0;
5069
5070     format = SendMessageW(hwndFrom, WM_NOTIFYFORMAT, (WPARAM)infoPtr->hwnd, NF_QUERY);
5071     TRACE("format=%d\n", format);
5072
5073     if (format != NFR_ANSI && format != NFR_UNICODE) return 0;
5074
5075     infoPtr->bNtfUnicode = (format == NFR_UNICODE);
5076
5077     return format;
5078 }
5079
5080 static LRESULT
5081 TREEVIEW_Size(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
5082 {
5083     if (wParam == SIZE_RESTORED)
5084     {
5085         infoPtr->clientWidth  = SLOWORD(lParam);
5086         infoPtr->clientHeight = SHIWORD(lParam);
5087
5088         TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
5089         TREEVIEW_SetFirstVisible(infoPtr, infoPtr->firstVisible, TRUE);
5090         TREEVIEW_UpdateScrollBars(infoPtr);
5091     }
5092     else
5093     {
5094         FIXME("WM_SIZE flag %x %lx not handled\n", wParam, lParam);
5095     }
5096
5097     TREEVIEW_Invalidate(infoPtr, NULL);
5098     return 0;
5099 }
5100
5101 static LRESULT
5102 TREEVIEW_StyleChanged(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
5103 {
5104     TRACE("(%x %lx)\n", wParam, lParam);
5105
5106     if (wParam == GWL_STYLE)
5107     {
5108        DWORD dwNewStyle = ((LPSTYLESTRUCT)lParam)->styleNew;
5109
5110        /* we have to take special care about tooltips */
5111        if ((infoPtr->dwStyle ^ dwNewStyle) & TVS_NOTOOLTIPS)
5112        {
5113           if (infoPtr->dwStyle & TVS_NOTOOLTIPS)
5114           {
5115               infoPtr->hwndToolTip = COMCTL32_CreateToolTip(infoPtr->hwnd);
5116               TRACE("\n");
5117           }
5118           else
5119           {
5120              DestroyWindow(infoPtr->hwndToolTip);
5121              infoPtr->hwndToolTip = 0;
5122           }
5123        }
5124
5125        infoPtr->dwStyle = dwNewStyle;
5126     }
5127
5128     TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
5129     TREEVIEW_UpdateScrollBars(infoPtr);
5130     TREEVIEW_Invalidate(infoPtr, NULL);
5131
5132     return 0;
5133 }
5134
5135 static LRESULT
5136 TREEVIEW_SetFocus(TREEVIEW_INFO *infoPtr)
5137 {
5138     TRACE("\n");
5139
5140     if (!infoPtr->selectedItem)
5141     {
5142         TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, infoPtr->firstVisible,
5143                               TVC_UNKNOWN);
5144     }
5145
5146     TREEVIEW_SendSimpleNotify(infoPtr, NM_SETFOCUS);
5147     TREEVIEW_Invalidate(infoPtr, infoPtr->selectedItem);
5148     return 0;
5149 }
5150
5151 static LRESULT
5152 TREEVIEW_KillFocus(TREEVIEW_INFO *infoPtr)
5153 {
5154     TRACE("\n");
5155
5156     TREEVIEW_SendSimpleNotify(infoPtr, NM_KILLFOCUS);
5157     TREEVIEW_Invalidate(infoPtr, infoPtr->selectedItem);
5158     return 0;
5159 }
5160
5161
5162 static LRESULT WINAPI
5163 TREEVIEW_WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
5164 {
5165     TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
5166     if (infoPtr) TREEVIEW_VerifyTree(infoPtr);
5167     else
5168     {
5169         if (uMsg == WM_CREATE)
5170             TREEVIEW_Create(hwnd);
5171         else
5172             goto def;
5173     }
5174
5175     switch (uMsg)
5176     {
5177     case TVM_CREATEDRAGIMAGE:
5178         return TREEVIEW_CreateDragImage(infoPtr, wParam, lParam);
5179
5180     case TVM_DELETEITEM:
5181         return TREEVIEW_DeleteItem(infoPtr, (HTREEITEM)lParam);
5182
5183     case TVM_EDITLABELA:
5184         return (LRESULT)TREEVIEW_EditLabelA(infoPtr, (HTREEITEM)lParam);
5185
5186     case TVM_EDITLABELW:
5187         FIXME("Unimplemented msg TVM_EDITLABELW\n");
5188         return 0;
5189
5190     case TVM_ENDEDITLABELNOW:
5191         return TREEVIEW_EndEditLabelNow(infoPtr, (BOOL)wParam);
5192
5193     case TVM_ENSUREVISIBLE:
5194         return TREEVIEW_EnsureVisible(infoPtr, (HTREEITEM)lParam, TRUE);
5195
5196     case TVM_EXPAND:
5197         return TREEVIEW_ExpandMsg(infoPtr, (UINT)wParam, (HTREEITEM)lParam);
5198
5199     case TVM_GETBKCOLOR:
5200         return TREEVIEW_GetBkColor(infoPtr);
5201
5202     case TVM_GETCOUNT:
5203         return TREEVIEW_GetCount(infoPtr);
5204
5205     case TVM_GETEDITCONTROL:
5206         return TREEVIEW_GetEditControl(infoPtr);
5207
5208     case TVM_GETIMAGELIST:
5209         return TREEVIEW_GetImageList(infoPtr, wParam);
5210
5211     case TVM_GETINDENT:
5212         return TREEVIEW_GetIndent(infoPtr);
5213
5214     case TVM_GETINSERTMARKCOLOR:
5215         return TREEVIEW_GetInsertMarkColor(infoPtr);
5216
5217     case TVM_GETISEARCHSTRINGA:
5218         FIXME("Unimplemented msg TVM_GETISEARCHSTRINGA\n");
5219         return 0;
5220
5221     case TVM_GETISEARCHSTRINGW:
5222         FIXME("Unimplemented msg TVM_GETISEARCHSTRINGW\n");
5223         return 0;
5224
5225     case TVM_GETITEMA:
5226         return TREEVIEW_GetItemA(infoPtr, (LPTVITEMEXA)lParam);
5227
5228     case TVM_GETITEMW:
5229         return TREEVIEW_GetItemW(infoPtr, (LPTVITEMEXW)lParam);
5230
5231     case TVM_GETITEMHEIGHT:
5232         return TREEVIEW_GetItemHeight(infoPtr);
5233
5234     case TVM_GETITEMRECT:
5235         return TREEVIEW_GetItemRect(infoPtr, (BOOL)wParam, (LPRECT)lParam);
5236
5237     case TVM_GETITEMSTATE:
5238         return TREEVIEW_GetItemState(infoPtr, (HTREEITEM)wParam, (UINT)lParam);
5239
5240     case TVM_GETLINECOLOR:
5241         return TREEVIEW_GetLineColor(infoPtr);
5242
5243     case TVM_GETNEXTITEM:
5244         return TREEVIEW_GetNextItem(infoPtr, (UINT)wParam, (HTREEITEM)lParam);
5245
5246     case TVM_GETSCROLLTIME:
5247         return TREEVIEW_GetScrollTime(infoPtr);
5248
5249     case TVM_GETTEXTCOLOR:
5250         return TREEVIEW_GetTextColor(infoPtr);
5251
5252     case TVM_GETTOOLTIPS:
5253         return TREEVIEW_GetToolTips(infoPtr);
5254
5255     case TVM_GETUNICODEFORMAT:
5256         FIXME("Unimplemented msg TVM_GETUNICODEFORMAT\n");
5257         return 0;
5258
5259     case TVM_GETVISIBLECOUNT:
5260         return TREEVIEW_GetVisibleCount(infoPtr);
5261
5262     case TVM_HITTEST:
5263         return TREEVIEW_HitTest(infoPtr, (LPTVHITTESTINFO)lParam);
5264
5265     case TVM_INSERTITEMA:
5266         return TREEVIEW_InsertItemA(infoPtr, lParam);
5267
5268     case TVM_INSERTITEMW:
5269         return TREEVIEW_InsertItemW(infoPtr, lParam);
5270
5271     case TVM_SELECTITEM:
5272         return TREEVIEW_SelectItem(infoPtr, (INT)wParam, (HTREEITEM)lParam);
5273
5274     case TVM_SETBKCOLOR:
5275         return TREEVIEW_SetBkColor(infoPtr, (COLORREF)lParam);
5276
5277     case TVM_SETIMAGELIST:
5278         return TREEVIEW_SetImageList(infoPtr, wParam, (HIMAGELIST)lParam);
5279
5280     case TVM_SETINDENT:
5281         return TREEVIEW_SetIndent(infoPtr, (UINT)wParam);
5282
5283     case TVM_SETINSERTMARK:
5284         return TREEVIEW_SetInsertMark(infoPtr, (BOOL)wParam, (HTREEITEM)lParam);
5285
5286     case TVM_SETINSERTMARKCOLOR:
5287         return TREEVIEW_SetInsertMarkColor(infoPtr, (COLORREF)lParam);
5288
5289     case TVM_SETITEMA:
5290         return TREEVIEW_SetItemA(infoPtr, (LPTVITEMEXA)lParam);
5291
5292     case TVM_SETITEMW:
5293     return TREEVIEW_SetItemW(infoPtr, (LPTVITEMEXW)lParam);
5294         return 0;
5295
5296     case TVM_SETLINECOLOR:
5297         return TREEVIEW_SetLineColor(infoPtr, (COLORREF)lParam);
5298
5299     case TVM_SETITEMHEIGHT:
5300         return TREEVIEW_SetItemHeight(infoPtr, (INT)(SHORT)wParam);
5301
5302     case TVM_SETSCROLLTIME:
5303         return TREEVIEW_SetScrollTime(infoPtr, (UINT)wParam);
5304
5305     case TVM_SETTEXTCOLOR:
5306         return TREEVIEW_SetTextColor(infoPtr, (COLORREF)lParam);
5307
5308     case TVM_SETTOOLTIPS:
5309         return TREEVIEW_SetToolTips(infoPtr, (HWND)wParam);
5310
5311     case TVM_SETUNICODEFORMAT:
5312         FIXME("Unimplemented msg TVM_SETUNICODEFORMAT\n");
5313         return 0;
5314
5315     case TVM_SORTCHILDREN:
5316         return TREEVIEW_SortChildren(infoPtr, wParam, lParam);
5317
5318     case TVM_SORTCHILDRENCB:
5319         return TREEVIEW_SortChildrenCB(infoPtr, wParam, (LPTVSORTCB)lParam);
5320
5321     case WM_CHAR:
5322         return TREEVIEW_ProcessLetterKeys( hwnd, wParam, lParam );
5323
5324     case WM_COMMAND:
5325         return TREEVIEW_Command(infoPtr, wParam, lParam);
5326
5327     case WM_DESTROY:
5328         return TREEVIEW_Destroy(infoPtr);
5329
5330         /* WM_ENABLE */
5331
5332     case WM_ERASEBKGND:
5333         return TREEVIEW_EraseBackground(infoPtr, (HDC)wParam);
5334
5335     case WM_GETDLGCODE:
5336         return DLGC_WANTARROWS | DLGC_WANTCHARS;
5337
5338     case WM_GETFONT:
5339         return TREEVIEW_GetFont(infoPtr);
5340
5341     case WM_HSCROLL:
5342         return TREEVIEW_HScroll(infoPtr, wParam);
5343
5344     case WM_KEYDOWN:
5345         return TREEVIEW_KeyDown(infoPtr, wParam);
5346
5347     case WM_KILLFOCUS:
5348         return TREEVIEW_KillFocus(infoPtr);
5349
5350     case WM_LBUTTONDBLCLK:
5351         return TREEVIEW_LButtonDoubleClick(infoPtr, lParam);
5352
5353     case WM_LBUTTONDOWN:
5354         return TREEVIEW_LButtonDown(infoPtr, lParam);
5355
5356         /* WM_MBUTTONDOWN */
5357
5358         /* WM_MOUSEMOVE */
5359
5360     case WM_NOTIFY:
5361         return TREEVIEW_Notify(infoPtr, wParam, lParam);
5362
5363     case WM_NOTIFYFORMAT:
5364         return TREEVIEW_NotifyFormat(infoPtr, (HWND)wParam, (UINT)lParam);
5365
5366     case WM_PAINT:
5367         return TREEVIEW_Paint(infoPtr, wParam);
5368
5369         /* WM_PRINTCLIENT */
5370
5371     case WM_RBUTTONDOWN:
5372         return TREEVIEW_RButtonDown(infoPtr, lParam);
5373
5374     case WM_SETFOCUS:
5375         return TREEVIEW_SetFocus(infoPtr);
5376
5377     case WM_SETFONT:
5378         return TREEVIEW_SetFont(infoPtr, (HFONT)wParam, (BOOL)lParam);
5379
5380     case WM_SETREDRAW:
5381         return TREEVIEW_SetRedraw(infoPtr, wParam, lParam);
5382
5383     case WM_SIZE:
5384         return TREEVIEW_Size(infoPtr, wParam, lParam);
5385
5386     case WM_STYLECHANGED:
5387         return TREEVIEW_StyleChanged(infoPtr, wParam, lParam);
5388
5389         /* WM_SYSCOLORCHANGE */
5390
5391         /* WM_SYSKEYDOWN */
5392
5393     case WM_TIMER:
5394         return TREEVIEW_HandleTimer(infoPtr, wParam);
5395
5396     case WM_VSCROLL:
5397         return TREEVIEW_VScroll(infoPtr, wParam);
5398
5399         /* WM_WININICHANGE */
5400
5401     case WM_MOUSEWHEEL:
5402         if (wParam & (MK_SHIFT | MK_CONTROL))
5403             goto def;
5404         return TREEVIEW_MouseWheel(infoPtr, wParam);
5405
5406     case WM_DRAWITEM:
5407         TRACE("drawItem\n");
5408         goto def;
5409
5410     default:
5411         /* This mostly catches MFC and Delphi messages. :( */
5412         if ((uMsg >= WM_USER) && (uMsg < WM_APP))
5413             TRACE("Unknown msg %04x wp=%08x lp=%08lx\n", uMsg, wParam, lParam);
5414 def:
5415         return DefWindowProcA(hwnd, uMsg, wParam, lParam);
5416     }
5417     return 0;
5418 }
5419
5420
5421 /* Class Registration ***************************************************/
5422
5423 VOID
5424 TREEVIEW_Register(void)
5425 {
5426     WNDCLASSA wndClass;
5427
5428     TRACE("\n");
5429
5430     ZeroMemory(&wndClass, sizeof(WNDCLASSA));
5431     wndClass.style = CS_GLOBALCLASS | CS_DBLCLKS;
5432     wndClass.lpfnWndProc = (WNDPROC)TREEVIEW_WindowProc;
5433     wndClass.cbClsExtra = 0;
5434     wndClass.cbWndExtra = sizeof(TREEVIEW_INFO *);
5435
5436     wndClass.hCursor = LoadCursorA(0, IDC_ARROWA);
5437     wndClass.hbrBackground = 0;
5438     wndClass.lpszClassName = WC_TREEVIEWA;
5439
5440     RegisterClassA(&wndClass);
5441 }
5442
5443
5444 VOID
5445 TREEVIEW_Unregister(void)
5446 {
5447     UnregisterClassA(WC_TREEVIEWA, NULL);
5448 }
5449
5450
5451 /* Tree Verification ****************************************************/
5452
5453 #ifdef NDEBUG
5454 static inline void
5455 TREEVIEW_VerifyChildren(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item);
5456
5457 static inline void TREEVIEW_VerifyItemCommon(TREEVIEW_INFO *infoPtr,
5458                                              TREEVIEW_ITEM *item)
5459 {
5460     assert(infoPtr != NULL);
5461     assert(item != NULL);
5462
5463     /* both NULL, or both non-null */
5464     assert((item->firstChild == NULL) == (item->lastChild == NULL));
5465
5466     assert(item->firstChild != item);
5467     assert(item->lastChild != item);
5468
5469     if (item->firstChild)
5470     {
5471         assert(item->firstChild->parent == item);
5472         assert(item->firstChild->prevSibling == NULL);
5473     }
5474
5475     if (item->lastChild)
5476     {
5477         assert(item->lastChild->parent == item);
5478         assert(item->lastChild->nextSibling == NULL);
5479     }
5480
5481     assert(item->nextSibling != item);
5482     if (item->nextSibling)
5483     {
5484         assert(item->nextSibling->parent == item->parent);
5485         assert(item->nextSibling->prevSibling == item);
5486     }
5487
5488     assert(item->prevSibling != item);
5489     if (item->prevSibling)
5490     {
5491         assert(item->prevSibling->parent == item->parent);
5492         assert(item->prevSibling->nextSibling == item);
5493     }
5494 }
5495
5496 static inline void
5497 TREEVIEW_VerifyItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
5498 {
5499     assert(item != NULL);
5500
5501     assert(item->parent != NULL);
5502     assert(item->parent != item);
5503     assert(item->iLevel == item->parent->iLevel + 1);
5504
5505     assert(DPA_GetPtrIndex(infoPtr->items, item) != -1);
5506
5507     TREEVIEW_VerifyItemCommon(infoPtr, item);
5508
5509     TREEVIEW_VerifyChildren(infoPtr, item);
5510 }
5511
5512 static inline void
5513 TREEVIEW_VerifyChildren(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
5514 {
5515     TREEVIEW_ITEM *child;
5516     assert(item != NULL);
5517
5518     for (child = item->firstChild; child != NULL; child = child->nextSibling)
5519         TREEVIEW_VerifyItem(infoPtr, child);
5520 }
5521
5522 static inline void
5523 TREEVIEW_VerifyRoot(TREEVIEW_INFO *infoPtr)
5524 {
5525     TREEVIEW_ITEM *root = infoPtr->root;
5526
5527     assert(root != NULL);
5528     assert(root->iLevel == -1);
5529     assert(root->parent == NULL);
5530     assert(root->prevSibling == NULL);
5531
5532     TREEVIEW_VerifyItemCommon(infoPtr, root);
5533
5534     TREEVIEW_VerifyChildren(infoPtr, root);
5535 }
5536
5537 static void
5538 TREEVIEW_VerifyTree(TREEVIEW_INFO *infoPtr)
5539 {
5540     assert(infoPtr != NULL);
5541
5542     TREEVIEW_VerifyRoot(infoPtr);
5543 }
5544 #endif