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 <stdarg.h>
  47 #include <string.h>
  48 #include <limits.h>
  49 #include <stdlib.h>
  50
  51 #define NONAMELESSUNION
  52 #define NONAMELESSSTRUCT
  53 #include "windef.h"
  54 #include "winbase.h"
  55 #include "wingdi.h"
  56 #include "winuser.h"
  57 #include "winnls.h"
  58 #include "commctrl.h"
  59 #include "comctl32.h"
  60 #include "wine/debug.h"
  61
  62 /* internal structures */
  63
  64 typedef struct _TREEITEM    /* HTREEITEM is a _TREEINFO *. */
  65 {
  66   UINT      callbackMask;
  67   UINT      state;
  68   UINT      stateMask;
  69   LPSTR     pszText;
  70   int       cchTextMax;
  71   int       iImage;
  72   int       iSelectedImage;
  73   int       cChildren;
  74   LPARAM    lParam;
  75   int       iIntegral;      /* item height multiplier (1 is normal) */
  76   int       iLevel;         /* indentation level:0=root level */
  77   HTREEITEM parent;         /* handle to parent or 0 if at root */
  78   HTREEITEM firstChild;     /* handle to first child or 0 if no child */
  79   HTREEITEM lastChild;
  80   HTREEITEM prevSibling;    /* handle to prev item in list, 0 if first */
  81   HTREEITEM nextSibling;    /* handle to next item in list, 0 if last */
  82   RECT      rect;
  83   LONG      linesOffset;
  84   LONG      stateOffset;
  85   LONG      imageOffset;
  86   LONG      textOffset;
  87   LONG      textWidth;      /* horizontal text extent for pszText */
  88   LONG      visibleOrder;   /* visible ordering, 0 is first visible item */
  89 } TREEVIEW_ITEM;
  90
  91
  92 typedef struct tagTREEVIEW_INFO
  93 {
  94   HWND          hwnd;
  95   HWND          hwndNotify;     /* Owner window to send notifications to */
  96   DWORD         dwStyle;
  97   HTREEITEM     root;
  98   UINT          uInternalStatus;
  99   INT           Timer;
 100   UINT          uNumItems;      /* number of valid TREEVIEW_ITEMs */
 101   INT           cdmode;         /* last custom draw setting */
 102   UINT          uScrollTime;    /* max. time for scrolling in milliseconds */
 103   BOOL          bRedraw;        /* if FALSE we validate but don't redraw in TREEVIEW_Paint() */
 104
 105   UINT          uItemHeight;    /* item height */
 106   BOOL          bHeightSet;
 107
 108   LONG          clientWidth;    /* width of control window */
 109   LONG          clientHeight;   /* height of control window */
 110
 111   LONG          treeWidth;      /* width of visible tree items */
 112   LONG          treeHeight;     /* height of visible tree items */
 113
 114   UINT          uIndent;        /* indentation in pixels */
 115   HTREEITEM     selectedItem;   /* handle to selected item or 0 if none */
 116   HTREEITEM     hotItem;        /* handle currently under cursor, 0 if none */
 117   HTREEITEM     focusedItem;    /* item that was under the cursor when WM_LBUTTONDOWN was received */
 118
 119   HTREEITEM     firstVisible;   /* handle to first visible item */
 120   LONG          maxVisibleOrder;
 121   HTREEITEM     dropItem;       /* handle to item selected by drag cursor */
 122   HTREEITEM     insertMarkItem; /* item after which insertion mark is placed */
 123   BOOL          insertBeforeorAfter; /* flag used by TVM_SETINSERTMARK */
 124   HIMAGELIST    dragList;       /* Bitmap of dragged item */
 125   LONG          scrollX;
 126   COLORREF      clrBk;
 127   COLORREF      clrText;
 128   COLORREF      clrLine;
 129   COLORREF      clrInsertMark;
 130   HFONT         hFont;
 131   HFONT         hBoldFont;
 132   HWND          hwndToolTip;
 133
 134   HWND          hwndEdit;
 135   WNDPROC       wpEditOrig;     /* orig window proc for subclassing edit */
 136   BOOL          bIgnoreEditKillFocus;
 137   BOOL          bLabelChanged;
 138
 139   BOOL          bNtfUnicode;    /* TRUE if should send NOTIFY with W */
 140   BOOL          bUnicode;       /* set by CCM_SETUNICODEFORMAT       */
 141   HIMAGELIST    himlNormal;
 142   int           normalImageHeight;
 143   int           normalImageWidth;
 144   HIMAGELIST    himlState;
 145   int           stateImageHeight;
 146   int           stateImageWidth;
 147   HDPA          items;
 148
 149   DWORD lastKeyPressTimestamp; /* Added */
 150   WPARAM charCode; /* Added */
 151   INT nSearchParamLength; /* Added */
 152   CHAR szSearchParam[ MAX_PATH ]; /* Added */
 153 } TREEVIEW_INFO;
 154
 155
 156 /******** Defines that TREEVIEW_ProcessLetterKeys uses ****************/
 157 #define KEY_DELAY       450
 158
 159 /* bitflags for infoPtr->uInternalStatus */
 160
 161 #define TV_HSCROLL      0x01    /* treeview too large to fit in window */
 162 #define TV_VSCROLL      0x02    /* (horizontal/vertical) */
 163 #define TV_LDRAG                0x04    /* Lbutton pushed to start drag */
 164 #define TV_LDRAGGING    0x08    /* Lbutton pushed, mouse moved. */
 165 #define TV_RDRAG                0x10    /* dito Rbutton */
 166 #define TV_RDRAGGING    0x20
 167
 168 /* bitflags for infoPtr->timer */
 169
 170 #define TV_EDIT_TIMER    2
 171 #define TV_EDIT_TIMER_SET 2
 172
 173
 174 VOID TREEVIEW_Register (VOID);
 175 VOID TREEVIEW_Unregister (VOID);
 176
 177
 178 WINE_DEFAULT_DEBUG_CHANNEL(treeview);
 179
 180
 181 #define TEXT_CALLBACK_SIZE 260
 182
 183 #define TREEVIEW_LEFT_MARGIN 8
 184
 185 #define MINIMUM_INDENT 19
 186
 187 #define CALLBACK_MASK_ALL (TVIF_TEXT|TVIF_CHILDREN|TVIF_IMAGE|TVIF_SELECTEDIMAGE)
 188
 189 #define STATEIMAGEINDEX(x) (((x) >> 12) & 0x0f)
 190 #define OVERLAYIMAGEINDEX(x) (((x) >> 8) & 0x0f)
 191 #define ISVISIBLE(x)         ((x)->visibleOrder >= 0)
 192
 193
 194 typedef VOID (*TREEVIEW_ItemEnumFunc)(TREEVIEW_INFO *, TREEVIEW_ITEM *,LPVOID);
 195
 196
 197 static VOID TREEVIEW_Invalidate(TREEVIEW_INFO *, TREEVIEW_ITEM *);
 198
 199 static LRESULT TREEVIEW_DoSelectItem(TREEVIEW_INFO *, INT, HTREEITEM, INT);
 200 static VOID TREEVIEW_SetFirstVisible(TREEVIEW_INFO *, TREEVIEW_ITEM *, BOOL);
 201 static LRESULT TREEVIEW_EnsureVisible(TREEVIEW_INFO *, HTREEITEM, BOOL);
 202 static LRESULT TREEVIEW_RButtonUp(TREEVIEW_INFO *, LPPOINT);
 203 static LRESULT TREEVIEW_EndEditLabelNow(TREEVIEW_INFO *infoPtr, BOOL bCancel);
 204 static VOID TREEVIEW_UpdateScrollBars(TREEVIEW_INFO *infoPtr);
 205 static LRESULT TREEVIEW_HScroll(TREEVIEW_INFO *, WPARAM);
 206 static INT TREEVIEW_NotifyFormat (TREEVIEW_INFO *infoPtr, HWND wParam, UINT lParam);
 207
 208
 209 /* Random Utilities *****************************************************/
 210
 211 #ifndef NDEBUG
 212 static inline void
 213 TREEVIEW_VerifyTree(TREEVIEW_INFO *infoPtr)
 214 {
 215     (void)infoPtr;
 216 }
 217 #else
 218 /* The definition is at the end of the file. */
 219 static void TREEVIEW_VerifyTree(TREEVIEW_INFO *infoPtr);
 220 #endif
 221
 222 /* Returns the treeview private data if hwnd is a treeview.
 223  * Otherwise returns an undefined value. */
 224 static TREEVIEW_INFO *
 225 TREEVIEW_GetInfoPtr(HWND hwnd)
 226 {
 227     return (TREEVIEW_INFO *)GetWindowLongA(hwnd, 0);
 228 }
 229
 230 /* Don't call this. Nothing wants an item index. */
 231 static inline int
 232 TREEVIEW_GetItemIndex(TREEVIEW_INFO *infoPtr, HTREEITEM handle)
 233 {
 234     assert(infoPtr != NULL);
 235
 236     return DPA_GetPtrIndex(infoPtr->items, handle);
 237 }
 238
 239 /***************************************************************************
 240  * This method checks that handle is an item for this tree.
 241  */
 242 static BOOL
 243 TREEVIEW_ValidItem(TREEVIEW_INFO *infoPtr, HTREEITEM handle)
 244 {
 245     if (TREEVIEW_GetItemIndex(infoPtr, handle) == -1)
 246     {
 247         TRACE("invalid item %p\n", handle);
 248         return FALSE;
 249     }
 250     else
 251         return TRUE;
 252 }
 253
 254 static HFONT
 255 TREEVIEW_CreateBoldFont(HFONT hOrigFont)
 256 {
 257     LOGFONTA font;
 258
 259     GetObjectA(hOrigFont, sizeof(font), &font);
 260     font.lfWeight = FW_BOLD;
 261     return CreateFontIndirectA(&font);
 262 }
 263
 264 static inline HFONT
 265 TREEVIEW_FontForItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
 266 {
 267     return (item->state & TVIS_BOLD) ? infoPtr->hBoldFont : infoPtr->hFont;
 268 }
 269
 270 /* for trace/debugging purposes only */
 271 static const char *
 272 TREEVIEW_ItemName(TREEVIEW_ITEM *item)
 273 {
 274     if (item == NULL) return "<null item>";
 275     if (item->pszText == LPSTR_TEXTCALLBACKA) return "<callback>";
 276     if (item->pszText == NULL) return "<null>";
 277     return item->pszText;
 278 }
 279
 280 /* An item is not a child of itself. */
 281 static BOOL
 282 TREEVIEW_IsChildOf(TREEVIEW_ITEM *parent, TREEVIEW_ITEM *child)
 283 {
 284     do
 285     {
 286         child = child->parent;
 287         if (child == parent) return TRUE;
 288     } while (child != NULL);
 289
 290     return FALSE;
 291 }
 292
 293
 294 /* Tree Traversal *******************************************************/
 295
 296 /***************************************************************************
 297  * This method returns the last expanded sibling or child child item
 298  * of a tree node
 299  */
 300 static TREEVIEW_ITEM *
 301 TREEVIEW_GetLastListItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem)
 302 {
 303     if (!wineItem)
 304        return NULL;
 305
 306     while (wineItem->lastChild)
 307     {
 308        if (wineItem->state & TVIS_EXPANDED)
 309           wineItem = wineItem->lastChild;
 310        else
 311           break;
 312     }
 313
 314     if (wineItem == infoPtr->root)
 315         return NULL;
 316
 317     return wineItem;
 318 }
 319
 320 /***************************************************************************
 321  * This method returns the previous non-hidden item in the list not
 322  * considering the tree hierarchy.
 323  */
 324 static TREEVIEW_ITEM *
 325 TREEVIEW_GetPrevListItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *tvItem)
 326 {
 327     if (tvItem->prevSibling)
 328     {
 329         /* This item has a prevSibling, get the last item in the sibling's tree. */
 330         TREEVIEW_ITEM *upItem = tvItem->prevSibling;
 331
 332         if ((upItem->state & TVIS_EXPANDED) && upItem->lastChild != NULL)
 333             return TREEVIEW_GetLastListItem(infoPtr, upItem->lastChild);
 334         else
 335             return upItem;
 336     }
 337     else
 338     {
 339         /* this item does not have a prevSibling, get the parent */
 340         return (tvItem->parent != infoPtr->root) ? tvItem->parent : NULL;
 341     }
 342 }
 343
 344
 345 /***************************************************************************
 346  * This method returns the next physical item in the treeview not
 347  * considering the tree hierarchy.
 348  */
 349 static TREEVIEW_ITEM *
 350 TREEVIEW_GetNextListItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *tvItem)
 351 {
 352     assert(tvItem != NULL);
 353
 354     /*
 355      * If this item has children and is expanded, return the first child
 356      */
 357     if ((tvItem->state & TVIS_EXPANDED) && tvItem->firstChild != NULL)
 358     {
 359         return tvItem->firstChild;
 360     }
 361
 362
 363     /*
 364      * try to get the sibling
 365      */
 366     if (tvItem->nextSibling)
 367         return tvItem->nextSibling;
 368
 369     /*
 370      * Otherwise, get the parent's sibling.
 371      */
 372     while (tvItem->parent)
 373     {
 374         tvItem = tvItem->parent;
 375
 376         if (tvItem->nextSibling)
 377             return tvItem->nextSibling;
 378     }
 379
 380     return NULL;
 381 }
 382
 383 /***************************************************************************
 384  * This method returns the nth item starting at the given item.  It returns
 385  * the last item (or first) we we run out of items.
 386  *
 387  * Will scroll backward if count is <0.
 388  *             forward if count is >0.
 389  */
 390 static TREEVIEW_ITEM *
 391 TREEVIEW_GetListItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
 392                      LONG count)
 393 {
 394     TREEVIEW_ITEM *(*next_item)(TREEVIEW_INFO *, TREEVIEW_ITEM *);
 395     TREEVIEW_ITEM *previousItem;
 396
 397     assert(wineItem != NULL);
 398
 399     if (count > 0)
 400     {
 401         next_item = TREEVIEW_GetNextListItem;
 402     }
 403     else if (count < 0)
 404     {
 405         count = -count;
 406         next_item = TREEVIEW_GetPrevListItem;
 407     }
 408     else
 409         return wineItem;
 410
 411     do
 412     {
 413         previousItem = wineItem;
 414         wineItem = next_item(infoPtr, wineItem);
 415
 416     } while (--count && wineItem != NULL);
 417
 418
 419     return wineItem ? wineItem : previousItem;
 420 }
 421
 422 /* Notifications ************************************************************/
 423
 424 static INT get_notifycode(TREEVIEW_INFO *infoPtr, INT code)
 425 {
 426     if (!infoPtr->bNtfUnicode) {
 427         switch (code) {
 428         case TVN_SELCHANGINGW:    return TVN_SELCHANGINGA;
 429         case TVN_SELCHANGEDW:     return TVN_SELCHANGEDA;
 430         case TVN_GETDISPINFOW:    return TVN_GETDISPINFOA;
 431         case TVN_SETDISPINFOW:    return TVN_SETDISPINFOA;
 432         case TVN_ITEMEXPANDINGW:  return TVN_ITEMEXPANDINGA;
 433         case TVN_ITEMEXPANDEDW:   return TVN_ITEMEXPANDEDA;
 434         case TVN_BEGINDRAGW:      return TVN_BEGINDRAGA;
 435         case TVN_BEGINRDRAGW:     return TVN_BEGINRDRAGA;
 436         case TVN_DELETEITEMW:     return TVN_DELETEITEMA;
 437         case TVN_BEGINLABELEDITW: return TVN_BEGINLABELEDITA;
 438         case TVN_ENDLABELEDITW:   return TVN_ENDLABELEDITA;
 439         case TVN_GETINFOTIPW:     return TVN_GETINFOTIPA;
 440         }
 441     }
 442     return code;
 443 }
 444
 445 static LRESULT
 446 TREEVIEW_SendRealNotify(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
 447 {
 448     TRACE("wParam=%d, lParam=%ld\n", wParam, lParam);
 449     return SendMessageW(infoPtr->hwndNotify, WM_NOTIFY, wParam, lParam);
 450 }
 451
 452 static BOOL
 453 TREEVIEW_SendSimpleNotify(TREEVIEW_INFO *infoPtr, UINT code)
 454 {
 455     NMHDR nmhdr;
 456     HWND hwnd = infoPtr->hwnd;
 457
 458     TRACE("%d\n", code);
 459     nmhdr.hwndFrom = hwnd;
 460     nmhdr.idFrom = GetWindowLongA(hwnd, GWL_ID);
 461     nmhdr.code = get_notifycode(infoPtr, code);
 462
 463     return (BOOL)TREEVIEW_SendRealNotify(infoPtr,
 464                                   (WPARAM)nmhdr.idFrom, (LPARAM)&nmhdr);
 465 }
 466
 467 static VOID
 468 TREEVIEW_TVItemFromItem(TREEVIEW_INFO *infoPtr, UINT mask, TVITEMA *tvItem, TREEVIEW_ITEM *item)
 469 {
 470     tvItem->mask = mask;
 471     tvItem->hItem = item;
 472     tvItem->state = item->state;
 473     tvItem->stateMask = 0;
 474     tvItem->iImage = item->iImage;
 475     tvItem->cchTextMax = item->cchTextMax;
 476     tvItem->iImage = item->iImage;
 477     tvItem->iSelectedImage = item->iSelectedImage;
 478     tvItem->cChildren = item->cChildren;
 479     tvItem->lParam = item->lParam;
 480
 481     /* **** **** **** **** WARNING **** **** **** **** */
 482     /* This control stores all the data in A format    */
 483     /* we will convert it to W if the notify format    */
 484     /* is Unicode.                                     */
 485     /* **** **** **** **** WARNING **** **** **** **** */
 486     if (infoPtr->bNtfUnicode) {
 487         INT len = MultiByteToWideChar( CP_ACP, 0, item->pszText, -1, NULL, 0 );
 488         if (len > 1) {
 489             tvItem->pszText = (LPSTR)Alloc (len*sizeof(WCHAR));
 490             MultiByteToWideChar( CP_ACP, 0, item->pszText, -1, (LPWSTR)tvItem->pszText, len*sizeof(WCHAR) );
 491         }
 492     }
 493     else
 494         tvItem->pszText = item->pszText;
 495 }
 496
 497 static BOOL
 498 TREEVIEW_SendTreeviewNotify(TREEVIEW_INFO *infoPtr, UINT code, UINT action,
 499                             UINT mask, HTREEITEM oldItem, HTREEITEM newItem)
 500 {
 501     HWND hwnd = infoPtr->hwnd;
 502     NMTREEVIEWA nmhdr;
 503     BOOL ret;
 504
 505     TRACE("code:%d action:%x olditem:%p newitem:%p\n",
 506           code, action, oldItem, newItem);
 507
 508     ZeroMemory(&nmhdr, sizeof(NMTREEVIEWA));
 509
 510     nmhdr.hdr.hwndFrom = hwnd;
 511     nmhdr.hdr.idFrom = GetWindowLongA(hwnd, GWL_ID);
 512     nmhdr.hdr.code = get_notifycode(infoPtr, code);
 513     nmhdr.action = action;
 514
 515     if (oldItem)
 516         TREEVIEW_TVItemFromItem(infoPtr, mask, &nmhdr.itemOld, oldItem);
 517
 518     if (newItem)
 519         TREEVIEW_TVItemFromItem(infoPtr, mask, &nmhdr.itemNew, newItem);
 520
 521     nmhdr.ptDrag.x = 0;
 522     nmhdr.ptDrag.y = 0;
 523
 524     ret = (BOOL)TREEVIEW_SendRealNotify(infoPtr,
 525                               (WPARAM)GetWindowLongA(hwnd, GWL_ID),
 526                               (LPARAM)&nmhdr);
 527     if (infoPtr->bNtfUnicode) {
 528         Free(nmhdr.itemOld.pszText);
 529         Free(nmhdr.itemNew.pszText);
 530     }
 531     return ret;
 532 }
 533
 534 static BOOL
 535 TREEVIEW_SendTreeviewDnDNotify(TREEVIEW_INFO *infoPtr, UINT code,
 536                                HTREEITEM dragItem, POINT pt)
 537 {
 538     HWND hwnd = infoPtr->hwnd;
 539     NMTREEVIEWA nmhdr;
 540
 541     TRACE("code:%d dragitem:%p\n", code, dragItem);
 542
 543     nmhdr.hdr.hwndFrom = hwnd;
 544     nmhdr.hdr.idFrom = GetWindowLongA(hwnd, GWL_ID);
 545     nmhdr.hdr.code = get_notifycode(infoPtr, code);
 546     nmhdr.action = 0;
 547     nmhdr.itemNew.mask = TVIF_STATE | TVIF_PARAM | TVIF_HANDLE;
 548     nmhdr.itemNew.hItem = dragItem;
 549     nmhdr.itemNew.state = dragItem->state;
 550     nmhdr.itemNew.lParam = dragItem->lParam;
 551
 552     nmhdr.ptDrag.x = pt.x;
 553     nmhdr.ptDrag.y = pt.y;
 554
 555     return (BOOL)TREEVIEW_SendRealNotify(infoPtr,
 556                               (WPARAM)GetWindowLongA(hwnd, GWL_ID),
 557                               (LPARAM)&nmhdr);
 558 }
 559
 560
 561 static BOOL
 562 TREEVIEW_SendCustomDrawNotify(TREEVIEW_INFO *infoPtr, DWORD dwDrawStage,
 563                               HDC hdc, RECT rc)
 564 {
 565     HWND hwnd = infoPtr->hwnd;
 566     NMTVCUSTOMDRAW nmcdhdr;
 567     LPNMCUSTOMDRAW nmcd;
 568
 569     TRACE("drawstage:%lx hdc:%p\n", dwDrawStage, hdc);
 570
 571     nmcd = &nmcdhdr.nmcd;
 572     nmcd->hdr.hwndFrom = hwnd;
 573     nmcd->hdr.idFrom = GetWindowLongA(hwnd, GWL_ID);
 574     nmcd->hdr.code = NM_CUSTOMDRAW;
 575     nmcd->dwDrawStage = dwDrawStage;
 576     nmcd->hdc = hdc;
 577     nmcd->rc = rc;
 578     nmcd->dwItemSpec = 0;
 579     nmcd->uItemState = 0;
 580     nmcd->lItemlParam = 0;
 581     nmcdhdr.clrText = infoPtr->clrText;
 582     nmcdhdr.clrTextBk = infoPtr->clrBk;
 583     nmcdhdr.iLevel = 0;
 584
 585     return (BOOL)TREEVIEW_SendRealNotify(infoPtr,
 586                               (WPARAM)GetWindowLongA(hwnd, GWL_ID),
 587                               (LPARAM)&nmcdhdr);
 588 }
 589
 590
 591
 592 /* FIXME: need to find out when the flags in uItemState need to be set */
 593
 594 static BOOL
 595 TREEVIEW_SendCustomDrawItemNotify(TREEVIEW_INFO *infoPtr, HDC hdc,
 596                                   TREEVIEW_ITEM *wineItem, UINT uItemDrawState)
 597 {
 598     HWND hwnd = infoPtr->hwnd;
 599     NMTVCUSTOMDRAW nmcdhdr;
 600     LPNMCUSTOMDRAW nmcd;
 601     DWORD dwDrawStage, dwItemSpec;
 602     UINT uItemState;
 603     INT retval;
 604
 605     dwDrawStage = CDDS_ITEM | uItemDrawState;
 606     dwItemSpec = (DWORD)wineItem;
 607     uItemState = 0;
 608     if (wineItem->state & TVIS_SELECTED)
 609         uItemState |= CDIS_SELECTED;
 610     if (wineItem == infoPtr->selectedItem)
 611         uItemState |= CDIS_FOCUS;
 612     if (wineItem == infoPtr->hotItem)
 613         uItemState |= CDIS_HOT;
 614
 615     nmcd = &nmcdhdr.nmcd;
 616     nmcd->hdr.hwndFrom = hwnd;
 617     nmcd->hdr.idFrom = GetWindowLongA(hwnd, GWL_ID);
 618     nmcd->hdr.code = NM_CUSTOMDRAW;
 619     nmcd->dwDrawStage = dwDrawStage;
 620     nmcd->hdc = hdc;
 621     nmcd->rc = wineItem->rect;
 622     nmcd->dwItemSpec = dwItemSpec;
 623     nmcd->uItemState = uItemState;
 624     nmcd->lItemlParam = wineItem->lParam;
 625     nmcdhdr.clrText = infoPtr->clrText;
 626     nmcdhdr.clrTextBk = infoPtr->clrBk;
 627     nmcdhdr.iLevel = wineItem->iLevel;
 628
 629     TRACE("drawstage:%lx hdc:%p item:%lx, itemstate:%x, lItemlParam:%lx\n",
 630           nmcd->dwDrawStage, nmcd->hdc, nmcd->dwItemSpec,
 631           nmcd->uItemState, nmcd->lItemlParam);
 632
 633     retval = TREEVIEW_SendRealNotify(infoPtr,
 634                           (WPARAM)GetWindowLongA(hwnd, GWL_ID),
 635                           (LPARAM)&nmcdhdr);
 636
 637     infoPtr->clrText = nmcdhdr.clrText;
 638     infoPtr->clrBk = nmcdhdr.clrTextBk;
 639     return (BOOL)retval;
 640 }
 641
 642 static BOOL
 643 TREEVIEW_BeginLabelEditNotify(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *editItem)
 644 {
 645     HWND hwnd = infoPtr->hwnd;
 646     LPSTR allocated = NULL;
 647     NMTVDISPINFOA tvdi;
 648     BOOL ret;
 649
 650     tvdi.hdr.hwndFrom = hwnd;
 651     tvdi.hdr.idFrom = GetWindowLongA(hwnd, GWL_ID);
 652     tvdi.hdr.code = get_notifycode(infoPtr, TVN_BEGINLABELEDITW);
 653
 654     tvdi.item.mask = TVIF_HANDLE | TVIF_STATE | TVIF_PARAM | TVIF_TEXT;
 655     tvdi.item.hItem = editItem;
 656     tvdi.item.state = editItem->state;
 657     tvdi.item.lParam = editItem->lParam;
 658     if (infoPtr->bNtfUnicode) {
 659         INT len = MultiByteToWideChar( CP_ACP, 0, editItem->pszText, -1, NULL, 0 );
 660         if (len > 1) {
 661             tvdi.item.pszText = allocated = (LPSTR)Alloc (len*sizeof(WCHAR));
 662             MultiByteToWideChar( CP_ACP, 0, editItem->pszText, -1, (LPWSTR)tvdi.item.pszText, len*sizeof(WCHAR) );
 663             tvdi.item.cchTextMax = len*sizeof(WCHAR);
 664         }
 665         else {
 666             tvdi.item.pszText = editItem->pszText;  /* ??? */
 667             tvdi.item.cchTextMax = editItem->cchTextMax;  /* ??? */
 668         }
 669     }
 670     else {
 671         tvdi.item.pszText = editItem->pszText;
 672         tvdi.item.cchTextMax = editItem->cchTextMax;
 673     }
 674
 675     ret = (BOOL)TREEVIEW_SendRealNotify(infoPtr,
 676                                          tvdi.hdr.idFrom,
 677                                         (LPARAM)&tvdi);
 678     if (allocated)
 679         Free(allocated);
 680     return ret;
 681 }
 682
 683 static void
 684 TREEVIEW_UpdateDispInfo(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
 685                         UINT mask)
 686 {
 687     NMTVDISPINFOA callback;
 688     HWND hwnd = infoPtr->hwnd;
 689
 690     mask &= wineItem->callbackMask;
 691
 692     if (mask == 0) return;
 693
 694     callback.hdr.hwndFrom         = hwnd;
 695     callback.hdr.idFrom           = GetWindowLongA(hwnd, GWL_ID);
 696     callback.hdr.code             = get_notifycode(infoPtr, TVN_GETDISPINFOW);
 697
 698     /* 'state' always contains valid value, as well as 'lParam'.
 699      * All other parameters are uninitialized.
 700      */
 701     callback.item.pszText         = wineItem->pszText;
 702     callback.item.cchTextMax      = wineItem->cchTextMax;
 703     callback.item.mask            = mask;
 704     callback.item.hItem           = wineItem;
 705     callback.item.state           = wineItem->state;
 706     callback.item.lParam          = wineItem->lParam;
 707
 708     /* If text is changed we need to recalculate textWidth */
 709     if (mask & TVIF_TEXT)
 710        wineItem->textWidth = 0;
 711
 712     TREEVIEW_SendRealNotify(infoPtr,
 713                             (WPARAM)callback.hdr.idFrom, (LPARAM)&callback);
 714
 715     /* It may have changed due to a call to SetItem. */
 716     mask &= wineItem->callbackMask;
 717
 718     if ((mask & TVIF_TEXT) && callback.item.pszText != wineItem->pszText)
 719     {
 720         /* Instead of copying text into our buffer user specified its own */
 721         if (infoPtr->bNtfUnicode) {
 722             LPWSTR newText;
 723             int buflen;
 724             int len = WideCharToMultiByte( CP_ACP, 0,
 725                                            (LPWSTR)callback.item.pszText, -1,
 726                                            NULL, 0, NULL, NULL );
 727             buflen = max((len+1)*sizeof(WCHAR), TEXT_CALLBACK_SIZE);
 728             newText = (LPWSTR)ReAlloc(wineItem->pszText, buflen);
 729
 730             TRACE("returned wstr %s, len=%d, buflen=%d\n",
 731                   debugstr_w((LPWSTR)callback.item.pszText), len, buflen);
 732
 733             if (newText)
 734             {
 735                 wineItem->pszText = (LPSTR)newText;
 736                 WideCharToMultiByte( CP_ACP, 0,
 737                                      (LPWSTR)callback.item.pszText, -1,
 738                                      wineItem->pszText, buflen,
 739                                      NULL, NULL );
 740                 wineItem->cchTextMax = buflen;
 741             }
 742             /* If ReAlloc fails we have nothing to do, but keep original text */
 743         }
 744         else {
 745             int len = max(lstrlenA(callback.item.pszText) + 1,
 746                           TEXT_CALLBACK_SIZE);
 747             LPSTR newText = ReAlloc(wineItem->pszText, len);
 748
 749             TRACE("returned str %s, len=%d\n",
 750                   debugstr_a(callback.item.pszText), len);
 751
 752             if (newText)
 753             {
 754                 wineItem->pszText = newText;
 755                 strcpy(wineItem->pszText, callback.item.pszText);
 756                 wineItem->cchTextMax = len;
 757             }
 758             /* If ReAlloc fails we have nothing to do, but keep original text */
 759         }
 760     }
 761     else if (mask & TVIF_TEXT) {
 762         /* User put text into our buffer, that is ok unless W string */
 763         if (infoPtr->bNtfUnicode) {
 764             LPWSTR newText;
 765             LPSTR oldText = NULL;
 766             int buflen;
 767             int len = WideCharToMultiByte( CP_ACP, 0,
 768                                            (LPWSTR)callback.item.pszText, -1,
 769                                            NULL, 0, NULL, NULL );
 770             buflen = max((len+1)*sizeof(WCHAR), TEXT_CALLBACK_SIZE);
 771             newText = (LPWSTR)Alloc(buflen);
 772
 773             TRACE("same buffer wstr %s, len=%d, buflen=%d\n",
 774                   debugstr_w((LPWSTR)callback.item.pszText), len, buflen);
 775
 776             if (newText)
 777             {
 778                 oldText = wineItem->pszText;
 779                 wineItem->pszText = (LPSTR)newText;
 780                 WideCharToMultiByte( CP_ACP, 0,
 781                                      (LPWSTR)callback.item.pszText, -1,
 782                                      wineItem->pszText, buflen, NULL, NULL );
 783                 wineItem->cchTextMax = buflen;
 784                 if (oldText)
 785                     Free(oldText);
 786             }
 787         }
 788     }
 789
 790     if (mask & TVIF_IMAGE)
 791         wineItem->iImage = callback.item.iImage;
 792
 793     if (mask & TVIF_SELECTEDIMAGE)
 794         wineItem->iSelectedImage = callback.item.iSelectedImage;
 795
 796     if (mask & TVIF_CHILDREN)
 797         wineItem->cChildren = callback.item.cChildren;
 798
 799     /* These members are now permanently set. */
 800     if (callback.item.mask & TVIF_DI_SETITEM)
 801         wineItem->callbackMask &= ~callback.item.mask;
 802 }
 803
 804 /***************************************************************************
 805  * This function uses cChildren field to decide whether the item has
 806  * children or not.
 807  * Note: if this returns TRUE, the child items may not actually exist,
 808  * they could be virtual.
 809  *
 810  * Just use wineItem->firstChild to check for physical children.
 811  */
 812 static BOOL
 813 TREEVIEW_HasChildren(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem)
 814 {
 815     TREEVIEW_UpdateDispInfo(infoPtr, wineItem, TVIF_CHILDREN);
 816
 817     return wineItem->cChildren > 0;
 818 }
 819
 820
 821 /* Item Position ********************************************************/
 822
 823 /* Compute linesOffset, stateOffset, imageOffset, textOffset of an item. */
 824 static VOID
 825 TREEVIEW_ComputeItemInternalMetrics(TREEVIEW_INFO *infoPtr,
 826                                     TREEVIEW_ITEM *item)
 827 {
 828     /* Same effect, different optimisation. */
 829 #if 0
 830     BOOL lar = ((infoPtr->dwStyle & TVS_LINESATROOT)
 831                 && (infoPtr->dwStyle & (TVS_HASLINES|TVS_HASBUTTONS)));
 832 #else
 833     BOOL lar = ((infoPtr->dwStyle
 834                  & (TVS_LINESATROOT|TVS_HASLINES|TVS_HASBUTTONS))
 835                 > TVS_LINESATROOT);
 836 #endif
 837
 838     item->linesOffset = infoPtr->uIndent * (item->iLevel + lar - 1)
 839         - infoPtr->scrollX;
 840     item->stateOffset = item->linesOffset + infoPtr->uIndent;
 841     item->imageOffset = item->stateOffset
 842         + (STATEIMAGEINDEX(item->state) ? infoPtr->stateImageWidth : 0);
 843     item->textOffset  = item->imageOffset + infoPtr->normalImageWidth;
 844 }
 845
 846 static VOID
 847 TREEVIEW_ComputeTextWidth(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item, HDC hDC)
 848 {
 849     HDC hdc;
 850     HFONT hOldFont=0;
 851     SIZE sz;
 852
 853     /* DRAW's OM docker creates items like this */
 854     if (item->pszText == NULL)
 855     {
 856         item->textWidth = 0;
 857         return;
 858     }
 859
 860     if (item->textWidth != 0 && !(item->callbackMask & TVIF_TEXT))
 861        return;
 862
 863     if (hDC != 0)
 864     {
 865         hdc = hDC;
 866     }
 867     else
 868     {
 869         hdc = GetDC(infoPtr->hwnd);
 870         hOldFont = SelectObject(hdc, TREEVIEW_FontForItem(infoPtr, item));
 871     }
 872
 873     GetTextExtentPoint32A(hdc, item->pszText, strlen(item->pszText), &sz);
 874     item->textWidth = sz.cx;
 875
 876     if (hDC == 0)
 877     {
 878         SelectObject(hdc, hOldFont);
 879         ReleaseDC(0, hdc);
 880     }
 881 }
 882
 883 static VOID
 884 TREEVIEW_ComputeItemRect(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
 885 {
 886     item->rect.top = infoPtr->uItemHeight *
 887         (item->visibleOrder - infoPtr->firstVisible->visibleOrder);
 888
 889     item->rect.bottom = item->rect.top
 890         + infoPtr->uItemHeight * item->iIntegral - 1;
 891
 892     item->rect.left = 0;
 893     item->rect.right = infoPtr->clientWidth;
 894 }
 895
 896 /* We know that only items after start need their order updated. */
 897 static void
 898 TREEVIEW_RecalculateVisibleOrder(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *start)
 899 {
 900     TREEVIEW_ITEM *item;
 901     int order;
 902
 903     if (!start)
 904     {
 905         start = infoPtr->root->firstChild;
 906         order = 0;
 907     }
 908     else
 909         order = start->visibleOrder;
 910
 911     for (item = start; item != NULL;
 912          item = TREEVIEW_GetNextListItem(infoPtr, item))
 913     {
 914         item->visibleOrder = order;
 915         order += item->iIntegral;
 916     }
 917
 918     infoPtr->maxVisibleOrder = order;
 919
 920     for (item = start; item != NULL;
 921          item = TREEVIEW_GetNextListItem(infoPtr, item))
 922     {
 923         TREEVIEW_ComputeItemRect(infoPtr, item);
 924     }
 925 }
 926
 927
 928 /* Update metrics of all items in selected subtree.
 929  * root must be expanded
 930  */
 931 static VOID
 932 TREEVIEW_UpdateSubTree(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *root)
 933 {
 934    TREEVIEW_ITEM *sibling;
 935    HDC hdc;
 936    HFONT hOldFont;
 937
 938    if (!root->firstChild || !(root->state & TVIS_EXPANDED))
 939       return;
 940
 941    root->state &= ~TVIS_EXPANDED;
 942    sibling = TREEVIEW_GetNextListItem(infoPtr, root);
 943    root->state |= TVIS_EXPANDED;
 944
 945    hdc = GetDC(infoPtr->hwnd);
 946    hOldFont = SelectObject(hdc, infoPtr->hFont);
 947
 948    for (; root != sibling;
 949         root = TREEVIEW_GetNextListItem(infoPtr, root))
 950    {
 951       TREEVIEW_ComputeItemInternalMetrics(infoPtr, root);
 952
 953       if (root->callbackMask & TVIF_TEXT)
 954          TREEVIEW_UpdateDispInfo(infoPtr, root, TVIF_TEXT);
 955
 956       if (root->textWidth == 0)
 957       {
 958          SelectObject(hdc, TREEVIEW_FontForItem(infoPtr, root));
 959          TREEVIEW_ComputeTextWidth(infoPtr, root, hdc);
 960       }
 961    }
 962
 963    SelectObject(hdc, hOldFont);
 964    ReleaseDC(infoPtr->hwnd, hdc);
 965 }
 966
 967 /* Item Allocation **********************************************************/
 968
 969 static TREEVIEW_ITEM *
 970 TREEVIEW_AllocateItem(TREEVIEW_INFO *infoPtr)
 971 {
 972     TREEVIEW_ITEM *newItem = Alloc(sizeof(TREEVIEW_ITEM));
 973
 974     if (!newItem)
 975         return NULL;
 976
 977     if (DPA_InsertPtr(infoPtr->items, INT_MAX, newItem) == -1)
 978     {
 979         Free(newItem);
 980         return NULL;
 981     }
 982
 983     return newItem;
 984 }
 985
 986 /* Exact opposite of TREEVIEW_AllocateItem. In particular, it does not
 987  * free item->pszText. */
 988 static void
 989 TREEVIEW_FreeItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
 990 {
 991     DPA_DeletePtr(infoPtr->items, DPA_GetPtrIndex(infoPtr->items, item));
 992     Free(item);
 993     if (infoPtr->selectedItem == item)
 994         infoPtr->selectedItem = NULL;
 995     if (infoPtr->hotItem == item)
 996         infoPtr->hotItem = NULL;
 997     if (infoPtr->focusedItem == item)
 998         infoPtr->focusedItem = NULL;
 999     if (infoPtr->firstVisible == item)
1000         infoPtr->firstVisible = NULL;
1001     if (infoPtr->dropItem == item)
1002         infoPtr->dropItem = NULL;
1003     if (infoPtr->insertMarkItem == item)
1004         infoPtr->insertMarkItem = NULL;
1005 }
1006
1007
1008 /* Item Insertion *******************************************************/
1009
1010 /***************************************************************************
1011  * This method inserts newItem before sibling as a child of parent.
1012  * sibling can be NULL, but only if parent has no children.
1013  */
1014 static void
1015 TREEVIEW_InsertBefore(TREEVIEW_ITEM *newItem, TREEVIEW_ITEM *sibling,
1016                       TREEVIEW_ITEM *parent)
1017 {
1018     assert(newItem != NULL);
1019     assert(parent != NULL);
1020
1021     if (sibling != NULL)
1022     {
1023         assert(sibling->parent == parent);
1024
1025         if (sibling->prevSibling != NULL)
1026             sibling->prevSibling->nextSibling = newItem;
1027
1028         newItem->prevSibling = sibling->prevSibling;
1029         sibling->prevSibling = newItem;
1030     }
1031     else
1032        newItem->prevSibling = NULL;
1033
1034     newItem->nextSibling = sibling;
1035
1036     if (parent->firstChild == sibling)
1037         parent->firstChild = newItem;
1038
1039     if (parent->lastChild == NULL)
1040         parent->lastChild = newItem;
1041 }
1042
1043 /***************************************************************************
1044  * This method inserts newItem after sibling as a child of parent.
1045  * sibling can be NULL, but only if parent has no children.
1046  */
1047 static void
1048 TREEVIEW_InsertAfter(TREEVIEW_ITEM *newItem, TREEVIEW_ITEM *sibling,
1049                      TREEVIEW_ITEM *parent)
1050 {
1051     assert(newItem != NULL);
1052     assert(parent != NULL);
1053
1054     if (sibling != NULL)
1055     {
1056         assert(sibling->parent == parent);
1057
1058         if (sibling->nextSibling != NULL)
1059             sibling->nextSibling->prevSibling = newItem;
1060
1061         newItem->nextSibling = sibling->nextSibling;
1062         sibling->nextSibling = newItem;
1063     }
1064     else
1065        newItem->nextSibling = NULL;
1066
1067     newItem->prevSibling = sibling;
1068
1069     if (parent->lastChild == sibling)
1070         parent->lastChild = newItem;
1071
1072     if (parent->firstChild == NULL)
1073         parent->firstChild = newItem;
1074 }
1075
1076 static BOOL
1077 TREEVIEW_DoSetItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
1078                    const TVITEMEXA *tvItem)
1079 {
1080     UINT callbackClear = 0;
1081     UINT callbackSet = 0;
1082
1083     /* Do this first in case it fails. */
1084     if (tvItem->mask & TVIF_TEXT)
1085     {
1086         wineItem->textWidth = 0; /* force width recalculation */
1087         if (tvItem->pszText != LPSTR_TEXTCALLBACKA)
1088         {
1089             int len = lstrlenA(tvItem->pszText) + 1;
1090             LPSTR newText = ReAlloc(wineItem->pszText, len);
1091
1092             if (newText == NULL) return FALSE;
1093
1094             callbackClear |= TVIF_TEXT;
1095
1096             wineItem->pszText = newText;
1097             wineItem->cchTextMax = len;
1098             lstrcpynA(wineItem->pszText, tvItem->pszText, len);
1099             TRACE("setting text %s, item %p\n",
1100                   debugstr_a(wineItem->pszText), wineItem);
1101         }
1102         else
1103         {
1104             callbackSet |= TVIF_TEXT;
1105
1106             wineItem->pszText = ReAlloc(wineItem->pszText,
1107                                                  TEXT_CALLBACK_SIZE);
1108             wineItem->cchTextMax = TEXT_CALLBACK_SIZE;
1109             TRACE("setting callback, item %p\n",
1110                   wineItem);
1111         }
1112     }
1113
1114     if (tvItem->mask & TVIF_CHILDREN)
1115     {
1116         wineItem->cChildren = tvItem->cChildren;
1117
1118         if (wineItem->cChildren == I_CHILDRENCALLBACK)
1119             callbackSet |= TVIF_CHILDREN;
1120         else
1121             callbackClear |= TVIF_CHILDREN;
1122     }
1123
1124     if (tvItem->mask & TVIF_IMAGE)
1125     {
1126         wineItem->iImage = tvItem->iImage;
1127
1128         if (wineItem->iImage == I_IMAGECALLBACK)
1129             callbackSet |= TVIF_IMAGE;
1130         else
1131             callbackClear |= TVIF_IMAGE;
1132     }
1133
1134     if (tvItem->mask & TVIF_SELECTEDIMAGE)
1135     {
1136         wineItem->iSelectedImage = tvItem->iSelectedImage;
1137
1138         if (wineItem->iSelectedImage == I_IMAGECALLBACK)
1139             callbackSet |= TVIF_SELECTEDIMAGE;
1140         else
1141             callbackClear |= TVIF_SELECTEDIMAGE;
1142     }
1143
1144     if (tvItem->mask & TVIF_PARAM)
1145         wineItem->lParam = tvItem->lParam;
1146
1147     /* If the application sets TVIF_INTEGRAL without
1148      * supplying a TVITEMEX structure, it's toast. */
1149     if (tvItem->mask & TVIF_INTEGRAL)
1150         wineItem->iIntegral = tvItem->iIntegral;
1151
1152     if (tvItem->mask & TVIF_STATE)
1153     {
1154         TRACE("prevstate,state,mask:%x,%x,%x\n", wineItem->state, tvItem->state,
1155               tvItem->stateMask);
1156         wineItem->state &= ~tvItem->stateMask;
1157         wineItem->state |= (tvItem->state & tvItem->stateMask);
1158
1159         if (tvItem->stateMask & TVIS_BOLD)
1160           callbackSet |= TVIF_TEXT;
1161     }
1162
1163     wineItem->callbackMask |= callbackSet;
1164     wineItem->callbackMask &= ~callbackClear;
1165
1166     return TRUE;
1167 }
1168
1169 /* Note that the new item is pre-zeroed. */
1170 static LRESULT
1171 TREEVIEW_InsertItemA(TREEVIEW_INFO *infoPtr, LPARAM lParam)
1172 {
1173     const TVINSERTSTRUCTA *ptdi = (LPTVINSERTSTRUCTA) lParam;
1174     const TVITEMEXA *tvItem = &ptdi->DUMMYUNIONNAME.itemex;
1175     HTREEITEM insertAfter;
1176     TREEVIEW_ITEM *newItem, *parentItem;
1177     BOOL bTextUpdated = FALSE;
1178
1179     if (ptdi->hParent == TVI_ROOT || ptdi->hParent == 0)
1180     {
1181         parentItem = infoPtr->root;
1182     }
1183     else
1184     {
1185         parentItem = ptdi->hParent;
1186
1187         if (!TREEVIEW_ValidItem(infoPtr, parentItem))
1188         {
1189             WARN("invalid parent %p\n", parentItem);
1190             return (LRESULT)(HTREEITEM)NULL;
1191         }
1192     }
1193
1194     insertAfter = ptdi->hInsertAfter;
1195
1196     /* Validate this now for convenience. */
1197     switch ((DWORD)insertAfter)
1198     {
1199     case (DWORD)TVI_FIRST:
1200     case (DWORD)TVI_LAST:
1201     case (DWORD)TVI_SORT:
1202         break;
1203
1204     default:
1205         if (!TREEVIEW_ValidItem(infoPtr, insertAfter) ||
1206             insertAfter->parent != parentItem)
1207         {
1208             WARN("invalid insert after %p\n", insertAfter);
1209             insertAfter = TVI_LAST;
1210         }
1211     }
1212
1213     TRACE("parent %p position %p: '%s'\n", parentItem, insertAfter,
1214           (tvItem->mask & TVIF_TEXT)
1215           ? ((tvItem->pszText == LPSTR_TEXTCALLBACKA) ? "<callback>"
1216              : tvItem->pszText)
1217           : "<no label>");
1218
1219     newItem = TREEVIEW_AllocateItem(infoPtr);
1220     if (newItem == NULL)
1221         return (LRESULT)(HTREEITEM)NULL;
1222
1223     newItem->parent = parentItem;
1224     newItem->iIntegral = 1;
1225
1226     if (!TREEVIEW_DoSetItem(infoPtr, newItem, tvItem))
1227         return (LRESULT)(HTREEITEM)NULL;
1228
1229     /* After this point, nothing can fail. (Except for TVI_SORT.) */
1230
1231     infoPtr->uNumItems++;
1232
1233     switch ((DWORD)insertAfter)
1234     {
1235     case (DWORD)TVI_FIRST:
1236         {
1237            TREEVIEW_ITEM *originalFirst = parentItem->firstChild;
1238            TREEVIEW_InsertBefore(newItem, parentItem->firstChild, parentItem);
1239            if (infoPtr->firstVisible == originalFirst)
1240               TREEVIEW_SetFirstVisible(infoPtr, newItem, TRUE);
1241         }
1242         break;
1243
1244     case (DWORD)TVI_LAST:
1245         TREEVIEW_InsertAfter(newItem, parentItem->lastChild, parentItem);
1246         break;
1247
1248         /* hInsertAfter names a specific item we want to insert after */
1249     default:
1250         TREEVIEW_InsertAfter(newItem, insertAfter, insertAfter->parent);
1251         break;
1252
1253     case (DWORD)TVI_SORT:
1254         {
1255             TREEVIEW_ITEM *aChild;
1256             TREEVIEW_ITEM *previousChild = NULL;
1257             BOOL bItemInserted = FALSE;
1258
1259             aChild = parentItem->firstChild;
1260
1261             bTextUpdated = TRUE;
1262             TREEVIEW_UpdateDispInfo(infoPtr, newItem, TVIF_TEXT);
1263
1264             /* Iterate the parent children to see where we fit in */
1265             while (aChild != NULL)
1266             {
1267                 INT comp;
1268
1269                 TREEVIEW_UpdateDispInfo(infoPtr, aChild, TVIF_TEXT);
1270                 comp = lstrcmpA(newItem->pszText, aChild->pszText);
1271
1272                 if (comp < 0)   /* we are smaller than the current one */
1273                 {
1274                     TREEVIEW_InsertBefore(newItem, aChild, parentItem);
1275                     bItemInserted = TRUE;
1276                     break;
1277                 }
1278                 else if (comp > 0)      /* we are bigger than the current one */
1279                 {
1280                     previousChild = aChild;
1281
1282                     /* This will help us to exit if there is no more sibling */
1283                     aChild = (aChild->nextSibling == 0)
1284                         ? NULL
1285                         : aChild->nextSibling;
1286
1287                     /* Look at the next item */
1288                     continue;
1289                 }
1290                 else if (comp == 0)
1291                 {
1292                     /*
1293                      * An item with this name is already existing, therefore,
1294                      * we add after the one we found
1295                      */
1296                     TREEVIEW_InsertAfter(newItem, aChild, parentItem);
1297                     bItemInserted = TRUE;
1298                     break;
1299                 }
1300             }
1301
1302             /*
1303              * we reach the end of the child list and the item has not
1304              * yet been inserted, therefore, insert it after the last child.
1305              */
1306             if ((!bItemInserted) && (aChild == NULL))
1307                 TREEVIEW_InsertAfter(newItem, previousChild, parentItem);
1308
1309             break;
1310         }
1311     }
1312
1313
1314     TRACE("new item %p; parent %p, mask %x\n", newItem,
1315           newItem->parent, tvItem->mask);
1316
1317     newItem->iLevel = newItem->parent->iLevel + 1;
1318
1319     if (newItem->parent->cChildren == 0)
1320         newItem->parent->cChildren = 1;
1321
1322     if (infoPtr->dwStyle & TVS_CHECKBOXES)
1323     {
1324         if (STATEIMAGEINDEX(newItem->state) == 0)
1325             newItem->state |= INDEXTOSTATEIMAGEMASK(1);
1326     }
1327
1328     if (infoPtr->firstVisible == NULL)
1329         infoPtr->firstVisible = newItem;
1330
1331     TREEVIEW_VerifyTree(infoPtr);
1332
1333     if (parentItem == infoPtr->root ||
1334         (ISVISIBLE(parentItem) && parentItem->state & TVIS_EXPANDED))
1335     {
1336        TREEVIEW_ITEM *item;
1337        TREEVIEW_ITEM *prev = TREEVIEW_GetPrevListItem(infoPtr, newItem);
1338
1339        TREEVIEW_RecalculateVisibleOrder(infoPtr, prev);
1340        TREEVIEW_ComputeItemInternalMetrics(infoPtr, newItem);
1341
1342        if (!bTextUpdated)
1343           TREEVIEW_UpdateDispInfo(infoPtr, newItem, TVIF_TEXT);
1344
1345        TREEVIEW_ComputeTextWidth(infoPtr, newItem, 0);
1346        TREEVIEW_UpdateScrollBars(infoPtr);
1347     /*
1348      * if the item was inserted in a visible part of the tree,
1349      * invalidate it, as well as those after it
1350      */
1351        for (item = newItem;
1352             item != NULL;
1353             item = TREEVIEW_GetNextListItem(infoPtr, item))
1354           TREEVIEW_Invalidate(infoPtr, item);
1355     }
1356     else
1357     {
1358        newItem->visibleOrder = -1;
1359
1360        /* refresh treeview if newItem is the first item inserted under parentItem */
1361        if (ISVISIBLE(parentItem) && newItem->prevSibling == newItem->nextSibling)
1362        {
1363           /* parent got '+' - update it */
1364           TREEVIEW_Invalidate(infoPtr, parentItem);
1365        }
1366     }
1367
1368     return (LRESULT)newItem;
1369 }
1370
1371
1372 static LRESULT
1373 TREEVIEW_InsertItemW(TREEVIEW_INFO *infoPtr, LPARAM lParam)
1374 {
1375     TVINSERTSTRUCTW *tvisW;
1376     TVINSERTSTRUCTA tvisA;
1377     LRESULT lRes;
1378
1379     tvisW = (LPTVINSERTSTRUCTW) lParam;
1380
1381     tvisA.hParent = tvisW->hParent;
1382     tvisA.hInsertAfter = tvisW->hInsertAfter;
1383
1384     tvisA.DUMMYUNIONNAME.item.mask = tvisW->DUMMYUNIONNAME.item.mask;
1385     tvisA.DUMMYUNIONNAME.item.hItem = tvisW->DUMMYUNIONNAME.item.hItem;
1386     tvisA.DUMMYUNIONNAME.item.state = tvisW->DUMMYUNIONNAME.item.state;
1387     tvisA.DUMMYUNIONNAME.item.stateMask = tvisW->DUMMYUNIONNAME.item.stateMask;
1388     tvisA.DUMMYUNIONNAME.item.cchTextMax =
1389         tvisW->DUMMYUNIONNAME.item.cchTextMax;
1390
1391     if (tvisW->DUMMYUNIONNAME.item.pszText)
1392     {
1393         if (tvisW->DUMMYUNIONNAME.item.pszText != LPSTR_TEXTCALLBACKW)
1394         {
1395             int len = WideCharToMultiByte( CP_ACP, 0, tvisW->DUMMYUNIONNAME.item.pszText, -1,
1396                                            NULL, 0, NULL, NULL );
1397             tvisA.DUMMYUNIONNAME.item.pszText = Alloc(len);
1398             WideCharToMultiByte( CP_ACP, 0, tvisW->DUMMYUNIONNAME.item.pszText, -1,
1399                                  tvisA.DUMMYUNIONNAME.item.pszText, len, NULL, NULL );
1400         }
1401         else
1402         {
1403             tvisA.DUMMYUNIONNAME.item.pszText = LPSTR_TEXTCALLBACKA;
1404             tvisA.DUMMYUNIONNAME.item.cchTextMax = 0;
1405         }
1406     }
1407
1408     tvisA.DUMMYUNIONNAME.item.iImage = tvisW->DUMMYUNIONNAME.item.iImage;
1409     tvisA.DUMMYUNIONNAME.item.iSelectedImage =
1410         tvisW->DUMMYUNIONNAME.item.iSelectedImage;
1411     tvisA.DUMMYUNIONNAME.item.cChildren = tvisW->DUMMYUNIONNAME.item.cChildren;
1412     tvisA.DUMMYUNIONNAME.item.lParam = tvisW->DUMMYUNIONNAME.item.lParam;
1413
1414     lRes = TREEVIEW_InsertItemA(infoPtr, (LPARAM)&tvisA);
1415
1416     if (tvisA.DUMMYUNIONNAME.item.pszText != LPSTR_TEXTCALLBACKA)
1417     {
1418         Free(tvisA.DUMMYUNIONNAME.item.pszText);
1419     }
1420
1421     return lRes;
1422
1423 }
1424
1425
1426 /* Item Deletion ************************************************************/
1427 static void
1428 TREEVIEW_RemoveItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem);
1429
1430 static void
1431 TREEVIEW_RemoveAllChildren(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *parentItem)
1432 {
1433     TREEVIEW_ITEM *kill = parentItem->firstChild;
1434
1435     while (kill != NULL)
1436     {
1437         TREEVIEW_ITEM *next = kill->nextSibling;
1438
1439         TREEVIEW_RemoveItem(infoPtr, kill);
1440
1441         kill = next;
1442     }
1443
1444     assert(parentItem->cChildren <= 0); /* I_CHILDRENCALLBACK or 0 */
1445     assert(parentItem->firstChild == NULL);
1446     assert(parentItem->lastChild == NULL);
1447 }
1448
1449 static void
1450 TREEVIEW_UnlinkItem(TREEVIEW_ITEM *item)
1451 {
1452     TREEVIEW_ITEM *parentItem = item->parent;
1453
1454     assert(item != NULL);
1455     assert(item->parent != NULL); /* i.e. it must not be the root */
1456
1457     if (parentItem->firstChild == item)
1458         parentItem->firstChild = item->nextSibling;
1459
1460     if (parentItem->lastChild == item)
1461         parentItem->lastChild = item->prevSibling;
1462
1463     if (parentItem->firstChild == NULL && parentItem->lastChild == NULL
1464         && parentItem->cChildren > 0)
1465         parentItem->cChildren = 0;
1466
1467     if (item->prevSibling)
1468         item->prevSibling->nextSibling = item->nextSibling;
1469
1470     if (item->nextSibling)
1471         item->nextSibling->prevSibling = item->prevSibling;
1472 }
1473
1474 static void
1475 TREEVIEW_RemoveItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem)
1476 {
1477     TRACE("%p, (%s)\n", wineItem, TREEVIEW_ItemName(wineItem));
1478
1479     TREEVIEW_SendTreeviewNotify(infoPtr, TVN_DELETEITEMW, TVC_UNKNOWN,
1480                                 TVIF_HANDLE | TVIF_PARAM, wineItem, 0);
1481
1482     if (wineItem->firstChild)
1483         TREEVIEW_RemoveAllChildren(infoPtr, wineItem);
1484
1485     TREEVIEW_UnlinkItem(wineItem);
1486
1487     infoPtr->uNumItems--;
1488
1489     if (wineItem->pszText != LPSTR_TEXTCALLBACKA)
1490         Free(wineItem->pszText);
1491
1492     TREEVIEW_FreeItem(infoPtr, wineItem);
1493 }
1494
1495
1496 /* Empty out the tree. */
1497 static void
1498 TREEVIEW_RemoveTree(TREEVIEW_INFO *infoPtr)
1499 {
1500     TREEVIEW_RemoveAllChildren(infoPtr, infoPtr->root);
1501
1502     assert(infoPtr->uNumItems == 0);    /* root isn't counted in uNumItems */
1503 }
1504
1505 static LRESULT
1506 TREEVIEW_DeleteItem(TREEVIEW_INFO *infoPtr, HTREEITEM wineItem)
1507 {
1508     TREEVIEW_ITEM *oldSelection = infoPtr->selectedItem;
1509     TREEVIEW_ITEM *newSelection = oldSelection;
1510     TREEVIEW_ITEM *newFirstVisible = NULL;
1511     TREEVIEW_ITEM *parent, *prev = NULL;
1512     BOOL visible = FALSE;
1513
1514     if (wineItem == TVI_ROOT)
1515     {
1516         TRACE("TVI_ROOT\n");
1517         parent = infoPtr->root;
1518         newSelection = NULL;
1519         visible = TRUE;
1520         TREEVIEW_RemoveTree(infoPtr);
1521     }
1522     else
1523     {
1524         if (!TREEVIEW_ValidItem(infoPtr, wineItem))
1525             return FALSE;
1526
1527         TRACE("%p (%s)\n", wineItem, TREEVIEW_ItemName(wineItem));
1528         parent = wineItem->parent;
1529
1530         if (ISVISIBLE(wineItem))
1531         {
1532             prev = TREEVIEW_GetPrevListItem(infoPtr, wineItem);
1533             visible = TRUE;
1534         }
1535
1536         if (infoPtr->selectedItem != NULL
1537             && (wineItem == infoPtr->selectedItem
1538                 || TREEVIEW_IsChildOf(wineItem, infoPtr->selectedItem)))
1539         {
1540             if (wineItem->nextSibling)
1541                 newSelection = wineItem->nextSibling;
1542             else if (wineItem->parent != infoPtr->root)
1543                 newSelection = wineItem->parent;
1544         }
1545
1546         if (infoPtr->firstVisible == wineItem)
1547         {
1548             if (wineItem->nextSibling)
1549                newFirstVisible = wineItem->nextSibling;
1550             else if (wineItem->prevSibling)
1551                newFirstVisible = wineItem->prevSibling;
1552             else if (wineItem->parent != infoPtr->root)
1553                newFirstVisible = wineItem->parent;
1554                TREEVIEW_SetFirstVisible(infoPtr, NULL, TRUE);
1555         }
1556         else
1557             newFirstVisible = infoPtr->firstVisible;
1558
1559         TREEVIEW_RemoveItem(infoPtr, wineItem);
1560     }
1561
1562     /* Don't change if somebody else already has. */
1563     if (oldSelection == infoPtr->selectedItem)
1564     {
1565         if (TREEVIEW_ValidItem(infoPtr, newSelection))
1566             TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, newSelection, TVC_UNKNOWN);
1567         else
1568             infoPtr->selectedItem = 0;
1569     }
1570
1571     /* Validate insertMark dropItem.
1572      * hotItem ??? - used for comparison only.
1573      */
1574     if (!TREEVIEW_ValidItem(infoPtr, infoPtr->insertMarkItem))
1575         infoPtr->insertMarkItem = 0;
1576
1577     if (!TREEVIEW_ValidItem(infoPtr, infoPtr->dropItem))
1578         infoPtr->dropItem = 0;
1579
1580     if (!TREEVIEW_ValidItem(infoPtr, newFirstVisible))
1581         newFirstVisible = infoPtr->root->firstChild;
1582
1583     TREEVIEW_VerifyTree(infoPtr);
1584
1585
1586     if (visible)
1587     {
1588        TREEVIEW_SetFirstVisible(infoPtr, newFirstVisible, TRUE);
1589        TREEVIEW_RecalculateVisibleOrder(infoPtr, prev);
1590        TREEVIEW_UpdateScrollBars(infoPtr);
1591        TREEVIEW_Invalidate(infoPtr, NULL);
1592     }
1593     else if (ISVISIBLE(parent) && !TREEVIEW_HasChildren(infoPtr, parent))
1594     {
1595        /* parent lost '+/-' - update it */
1596        TREEVIEW_Invalidate(infoPtr, parent);
1597     }
1598
1599     return TRUE;
1600 }
1601
1602
1603 /* Get/Set Messages *********************************************************/
1604 static LRESULT
1605 TREEVIEW_SetRedraw(TREEVIEW_INFO* infoPtr, WPARAM wParam, LPARAM lParam)
1606 {
1607   if(wParam)
1608     infoPtr->bRedraw = TRUE;
1609   else
1610     infoPtr->bRedraw = FALSE;
1611
1612   return 0;
1613 }
1614
1615 static LRESULT
1616 TREEVIEW_GetIndent(TREEVIEW_INFO *infoPtr)
1617 {
1618     TRACE("\n");
1619     return infoPtr->uIndent;
1620 }
1621
1622 static LRESULT
1623 TREEVIEW_SetIndent(TREEVIEW_INFO *infoPtr, UINT newIndent)
1624 {
1625     TRACE("\n");
1626
1627     if (newIndent < MINIMUM_INDENT)
1628         newIndent = MINIMUM_INDENT;
1629
1630     if (infoPtr->uIndent != newIndent)
1631     {
1632         infoPtr->uIndent = newIndent;
1633         TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
1634         TREEVIEW_UpdateScrollBars(infoPtr);
1635         TREEVIEW_Invalidate(infoPtr, NULL);
1636     }
1637
1638     return 0;
1639 }
1640
1641
1642 static LRESULT
1643 TREEVIEW_GetToolTips(TREEVIEW_INFO *infoPtr)
1644 {
1645     TRACE("\n");
1646     return (LRESULT)infoPtr->hwndToolTip;
1647 }
1648
1649 static LRESULT
1650 TREEVIEW_SetToolTips(TREEVIEW_INFO *infoPtr, HWND hwndTT)
1651 {
1652     HWND prevToolTip;
1653
1654     TRACE("\n");
1655     prevToolTip = infoPtr->hwndToolTip;
1656     infoPtr->hwndToolTip = hwndTT;
1657
1658     return (LRESULT)prevToolTip;
1659 }
1660
1661
1662 static LRESULT
1663 TREEVIEW_GetScrollTime(TREEVIEW_INFO *infoPtr)
1664 {
1665     return infoPtr->uScrollTime;
1666 }
1667
1668 static LRESULT
1669 TREEVIEW_SetScrollTime(TREEVIEW_INFO *infoPtr, UINT uScrollTime)
1670 {
1671     UINT uOldScrollTime = infoPtr->uScrollTime;
1672
1673     infoPtr->uScrollTime = min(uScrollTime, 100);
1674
1675     return uOldScrollTime;
1676 }
1677
1678
1679 static LRESULT
1680 TREEVIEW_GetImageList(TREEVIEW_INFO *infoPtr, WPARAM wParam)
1681 {
1682     TRACE("\n");
1683
1684     switch (wParam)
1685     {
1686     case (WPARAM)TVSIL_NORMAL:
1687         return (LRESULT)infoPtr->himlNormal;
1688
1689     case (WPARAM)TVSIL_STATE:
1690         return (LRESULT)infoPtr->himlState;
1691
1692     default:
1693         return 0;
1694     }
1695 }
1696
1697 static LRESULT
1698 TREEVIEW_SetImageList(TREEVIEW_INFO *infoPtr, WPARAM wParam, HIMAGELIST himlNew)
1699 {
1700     HIMAGELIST himlOld = 0;
1701     int oldWidth  = infoPtr->normalImageWidth;
1702     int oldHeight = infoPtr->normalImageHeight;
1703
1704
1705     TRACE("%x,%p\n", wParam, himlNew);
1706
1707     switch (wParam)
1708     {
1709     case (WPARAM)TVSIL_NORMAL:
1710         himlOld = infoPtr->himlNormal;
1711         infoPtr->himlNormal = himlNew;
1712
1713         if (himlNew != NULL)
1714             ImageList_GetIconSize(himlNew, &infoPtr->normalImageWidth,
1715                                   &infoPtr->normalImageHeight);
1716         else
1717         {
1718             infoPtr->normalImageWidth = 0;
1719             infoPtr->normalImageHeight = 0;
1720         }
1721
1722         break;
1723
1724     case (WPARAM)TVSIL_STATE:
1725         himlOld = infoPtr->himlState;
1726         infoPtr->himlState = himlNew;
1727
1728         if (himlNew != NULL)
1729             ImageList_GetIconSize(himlNew, &infoPtr->stateImageWidth,
1730                                   &infoPtr->stateImageHeight);
1731         else
1732         {
1733             infoPtr->stateImageWidth = 0;
1734             infoPtr->stateImageHeight = 0;
1735         }
1736
1737         break;
1738     }
1739
1740     if (oldWidth != infoPtr->normalImageWidth ||
1741         oldHeight != infoPtr->normalImageHeight)
1742     {
1743        TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
1744        TREEVIEW_UpdateScrollBars(infoPtr);
1745     }
1746
1747     TREEVIEW_Invalidate(infoPtr, NULL);
1748
1749     return (LRESULT)himlOld;
1750 }
1751
1752 /* Compute the natural height (based on the font size) for items. */
1753 static UINT
1754 TREEVIEW_NaturalHeight(TREEVIEW_INFO *infoPtr)
1755 {
1756     TEXTMETRICA tm;
1757     HDC hdc = GetDC(0);
1758     HFONT hOldFont = SelectObject(hdc, infoPtr->hFont);
1759
1760     GetTextMetricsA(hdc, &tm);
1761
1762     SelectObject(hdc, hOldFont);
1763     ReleaseDC(0, hdc);
1764
1765     /* The 16 is a hack because our fonts are tiny. */
1766     /* add 2 for the focus border and 1 more for margin some apps assume */
1767     return max(16, tm.tmHeight + tm.tmExternalLeading + 3);
1768 }
1769
1770 static LRESULT
1771 TREEVIEW_SetItemHeight(TREEVIEW_INFO *infoPtr, INT newHeight)
1772 {
1773     INT prevHeight = infoPtr->uItemHeight;
1774
1775     TRACE("%d \n", newHeight);
1776     if (newHeight == -1)
1777     {
1778         infoPtr->uItemHeight = TREEVIEW_NaturalHeight(infoPtr);
1779         infoPtr->bHeightSet = FALSE;
1780     }
1781     else
1782     {
1783         infoPtr->uItemHeight = newHeight;
1784         infoPtr->bHeightSet = TRUE;
1785     }
1786
1787     /* Round down, unless we support odd ("non even") heights. */
1788     if (!(infoPtr->dwStyle) & TVS_NONEVENHEIGHT)
1789         infoPtr->uItemHeight &= ~1;
1790
1791     if (infoPtr->uItemHeight != prevHeight)
1792     {
1793         TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
1794         TREEVIEW_UpdateScrollBars(infoPtr);
1795         TREEVIEW_Invalidate(infoPtr, NULL);
1796     }
1797
1798     return prevHeight;
1799 }
1800
1801 static LRESULT
1802 TREEVIEW_GetItemHeight(TREEVIEW_INFO *infoPtr)
1803 {
1804     TRACE("\n");
1805     return infoPtr->uItemHeight;
1806 }
1807
1808
1809 static LRESULT
1810 TREEVIEW_GetFont(TREEVIEW_INFO *infoPtr)
1811 {
1812     TRACE("%p\n", infoPtr->hFont);
1813     return (LRESULT)infoPtr->hFont;
1814 }
1815
1816
1817 static INT CALLBACK
1818 TREEVIEW_ResetTextWidth(LPVOID pItem, LPVOID unused)
1819 {
1820     (void)unused;
1821
1822     ((TREEVIEW_ITEM *)pItem)->textWidth = 0;
1823
1824     return 1;
1825 }
1826
1827 static LRESULT
1828 TREEVIEW_SetFont(TREEVIEW_INFO *infoPtr, HFONT hFont, BOOL bRedraw)
1829 {
1830     UINT uHeight = infoPtr->uItemHeight;
1831
1832     TRACE("%p %i\n", hFont, bRedraw);
1833
1834     infoPtr->hFont = hFont ? hFont : GetStockObject(SYSTEM_FONT);
1835
1836     DeleteObject(infoPtr->hBoldFont);
1837     infoPtr->hBoldFont = TREEVIEW_CreateBoldFont(infoPtr->hFont);
1838
1839     if (!infoPtr->bHeightSet)
1840         infoPtr->uItemHeight = TREEVIEW_NaturalHeight(infoPtr);
1841
1842     if (uHeight != infoPtr->uItemHeight)
1843        TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
1844
1845     DPA_EnumCallback(infoPtr->items, TREEVIEW_ResetTextWidth, 0);
1846
1847     TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
1848     TREEVIEW_UpdateScrollBars(infoPtr);
1849
1850     if (bRedraw)
1851         TREEVIEW_Invalidate(infoPtr, NULL);
1852
1853     return 0;
1854 }
1855
1856
1857 static LRESULT
1858 TREEVIEW_GetLineColor(TREEVIEW_INFO *infoPtr)
1859 {
1860     TRACE("\n");
1861     return (LRESULT)infoPtr->clrLine;
1862 }
1863
1864 static LRESULT
1865 TREEVIEW_SetLineColor(TREEVIEW_INFO *infoPtr, COLORREF color)
1866 {
1867     COLORREF prevColor = infoPtr->clrLine;
1868
1869     TRACE("\n");
1870     infoPtr->clrLine = color;
1871     return (LRESULT)prevColor;
1872 }
1873
1874
1875 static LRESULT
1876 TREEVIEW_GetTextColor(TREEVIEW_INFO *infoPtr)
1877 {
1878     TRACE("\n");
1879     return (LRESULT)infoPtr->clrText;
1880 }
1881
1882 static LRESULT
1883 TREEVIEW_SetTextColor(TREEVIEW_INFO *infoPtr, COLORREF color)
1884 {
1885     COLORREF prevColor = infoPtr->clrText;
1886
1887     TRACE("\n");
1888     infoPtr->clrText = color;
1889
1890     if (infoPtr->clrText != prevColor)
1891         TREEVIEW_Invalidate(infoPtr, NULL);
1892
1893     return (LRESULT)prevColor;
1894 }
1895
1896
1897 static LRESULT
1898 TREEVIEW_GetBkColor(TREEVIEW_INFO *infoPtr)
1899 {
1900     TRACE("\n");
1901     return (LRESULT)infoPtr->clrBk;
1902 }
1903
1904 static LRESULT
1905 TREEVIEW_SetBkColor(TREEVIEW_INFO *infoPtr, COLORREF newColor)
1906 {
1907     COLORREF prevColor = infoPtr->clrBk;
1908
1909     TRACE("\n");
1910     infoPtr->clrBk = newColor;
1911
1912     if (newColor != prevColor)
1913         TREEVIEW_Invalidate(infoPtr, NULL);
1914
1915     return (LRESULT)prevColor;
1916 }
1917
1918
1919 static LRESULT
1920 TREEVIEW_GetInsertMarkColor(TREEVIEW_INFO *infoPtr)
1921 {
1922     TRACE("\n");
1923     return (LRESULT)infoPtr->clrInsertMark;
1924 }
1925
1926 static LRESULT
1927 TREEVIEW_SetInsertMarkColor(TREEVIEW_INFO *infoPtr, COLORREF color)
1928 {
1929     COLORREF prevColor = infoPtr->clrInsertMark;
1930
1931     TRACE("%lx\n", color);
1932     infoPtr->clrInsertMark = color;
1933
1934     return (LRESULT)prevColor;
1935 }
1936
1937
1938 static LRESULT
1939 TREEVIEW_SetInsertMark(TREEVIEW_INFO *infoPtr, BOOL wParam, HTREEITEM item)
1940 {
1941     TRACE("%d %p\n", wParam, item);
1942
1943     if (!TREEVIEW_ValidItem(infoPtr, item))
1944         return 0;
1945
1946     infoPtr->insertBeforeorAfter = wParam;
1947     infoPtr->insertMarkItem = item;
1948
1949     TREEVIEW_Invalidate(infoPtr, NULL);
1950
1951     return 1;
1952 }
1953
1954
1955 /************************************************************************
1956  * Some serious braindamage here. lParam is a pointer to both the
1957  * input HTREEITEM and the output RECT.
1958  */
1959 static LRESULT
1960 TREEVIEW_GetItemRect(TREEVIEW_INFO *infoPtr, BOOL fTextRect, LPRECT lpRect)
1961 {
1962     TREEVIEW_ITEM *wineItem;
1963     const HTREEITEM *pItem = (HTREEITEM *)lpRect;
1964
1965     TRACE("\n");
1966     /*
1967      * validate parameters
1968      */
1969     if (pItem == NULL)
1970         return FALSE;
1971
1972     wineItem = *pItem;
1973     if (!TREEVIEW_ValidItem(infoPtr, wineItem) || !ISVISIBLE(wineItem))
1974         return FALSE;
1975
1976     /*
1977      * If wParam is TRUE return the text size otherwise return
1978      * the whole item size
1979      */
1980     if (fTextRect)
1981     {
1982         /* Windows does not send TVN_GETDISPINFO here. */
1983
1984         lpRect->top = wineItem->rect.top;
1985         lpRect->bottom = wineItem->rect.bottom;
1986
1987         lpRect->left = wineItem->textOffset;
1988         lpRect->right = wineItem->textOffset + wineItem->textWidth;
1989     }
1990     else
1991     {
1992         *lpRect = wineItem->rect;
1993     }
1994
1995     TRACE("%s [L:%ld R:%ld T:%ld B:%ld]\n", fTextRect ? "text" : "item",
1996           lpRect->left, lpRect->right, lpRect->top, lpRect->bottom);
1997
1998     return TRUE;
1999 }
2000
2001 static inline LRESULT
2002 TREEVIEW_GetVisibleCount(TREEVIEW_INFO *infoPtr)
2003 {
2004     /* Suprise! This does not take integral height into account. */
2005     return infoPtr->clientHeight / infoPtr->uItemHeight;
2006 }
2007
2008
2009 static LRESULT
2010 TREEVIEW_GetItemA(TREEVIEW_INFO *infoPtr, LPTVITEMEXA tvItem)
2011 {
2012     TREEVIEW_ITEM *wineItem;
2013
2014     wineItem = tvItem->hItem;
2015     if (!TREEVIEW_ValidItem(infoPtr, wineItem))
2016         return FALSE;
2017
2018     TREEVIEW_UpdateDispInfo(infoPtr, wineItem, tvItem->mask);
2019
2020     if (tvItem->mask & TVIF_CHILDREN)
2021         tvItem->cChildren = wineItem->cChildren;
2022
2023     if (tvItem->mask & TVIF_HANDLE)
2024         tvItem->hItem = wineItem;
2025
2026     if (tvItem->mask & TVIF_IMAGE)
2027         tvItem->iImage = wineItem->iImage;
2028
2029     if (tvItem->mask & TVIF_INTEGRAL)
2030         tvItem->iIntegral = wineItem->iIntegral;
2031
2032     /* undocumented: windows ignores TVIF_PARAM and
2033      * * always sets lParam
2034      */
2035     tvItem->lParam = wineItem->lParam;
2036
2037     if (tvItem->mask & TVIF_SELECTEDIMAGE)
2038         tvItem->iSelectedImage = wineItem->iSelectedImage;
2039
2040     if (tvItem->mask & TVIF_STATE) {
2041         /* Careful here - Windows ignores the stateMask when you get the state
2042             That contradicts the documentation, but makes more common sense, masking
2043             retrieval in this way seems overkill */
2044         tvItem->state = wineItem->state;
2045     }
2046
2047     if (tvItem->mask & TVIF_TEXT)
2048         lstrcpynA(tvItem->pszText, wineItem->pszText, tvItem->cchTextMax);
2049
2050     TRACE("item <%p>, txt %p, img %p, mask %x\n",
2051           wineItem, tvItem->pszText, &tvItem->iImage, tvItem->mask);
2052
2053     return TRUE;
2054 }
2055
2056 /* Beware MSDN Library Visual Studio 6.0. It says -1 on failure, 0 on success,
2057  * which is wrong. */
2058 static LRESULT
2059 TREEVIEW_SetItemA(TREEVIEW_INFO *infoPtr, LPTVITEMEXA tvItem)
2060 {
2061     TREEVIEW_ITEM *wineItem;
2062     TREEVIEW_ITEM originalItem;
2063
2064     wineItem = tvItem->hItem;
2065
2066     TRACE("item %d,mask %x\n", TREEVIEW_GetItemIndex(infoPtr, wineItem),
2067           tvItem->mask);
2068
2069     if (!TREEVIEW_ValidItem(infoPtr, wineItem))
2070         return FALSE;
2071
2072     /* store the orignal item values */
2073     originalItem = *wineItem;
2074
2075     if (!TREEVIEW_DoSetItem(infoPtr, wineItem, tvItem))
2076         return FALSE;
2077
2078     /* If the text or TVIS_BOLD was changed, and it is visible, recalculate. */
2079     if ((tvItem->mask & TVIF_TEXT
2080          || (tvItem->mask & TVIF_STATE && tvItem->stateMask & TVIS_BOLD))
2081         && ISVISIBLE(wineItem))
2082     {
2083         TREEVIEW_UpdateDispInfo(infoPtr, wineItem, TVIF_TEXT);
2084         TREEVIEW_ComputeTextWidth(infoPtr, wineItem, 0);
2085     }
2086
2087     if (tvItem->mask != 0 && ISVISIBLE(wineItem))
2088     {
2089         /* The refresh updates everything, but we can't wait until then. */
2090         TREEVIEW_ComputeItemInternalMetrics(infoPtr, wineItem);
2091
2092         /* if any of the items values changed, redraw the item */
2093         if(memcmp(&originalItem, wineItem, sizeof(TREEVIEW_ITEM)))
2094         {
2095             if (tvItem->mask & TVIF_INTEGRAL)
2096             {
2097                 TREEVIEW_RecalculateVisibleOrder(infoPtr, wineItem);
2098                 TREEVIEW_UpdateScrollBars(infoPtr);
2099
2100                 TREEVIEW_Invalidate(infoPtr, NULL);
2101             }
2102             else
2103             {
2104                 TREEVIEW_UpdateScrollBars(infoPtr);
2105                 TREEVIEW_Invalidate(infoPtr, wineItem);
2106             }
2107         }
2108     }
2109
2110     return TRUE;
2111 }
2112
2113 static LRESULT
2114 TREEVIEW_GetItemW(TREEVIEW_INFO *infoPtr, LPTVITEMEXW tvItem)
2115 {
2116     TREEVIEW_ITEM *wineItem;
2117     INT         iItem;
2118     iItem = (INT)tvItem->hItem;
2119
2120     wineItem = tvItem->hItem;
2121     if(!TREEVIEW_ValidItem (infoPtr, wineItem))
2122         return FALSE;
2123
2124     TREEVIEW_UpdateDispInfo(infoPtr, wineItem, tvItem->mask);
2125
2126     if (tvItem->mask & TVIF_CHILDREN) {
2127         if (TVIF_CHILDREN==I_CHILDRENCALLBACK)
2128             FIXME("I_CHILDRENCALLBACK not supported\n");
2129         tvItem->cChildren = wineItem->cChildren;
2130     }
2131
2132     if (tvItem->mask & TVIF_HANDLE) {
2133         tvItem->hItem = wineItem;
2134     }
2135     if (tvItem->mask & TVIF_IMAGE) {
2136         tvItem->iImage = wineItem->iImage;
2137     }
2138     if (tvItem->mask & TVIF_INTEGRAL) {
2139         tvItem->iIntegral = wineItem->iIntegral;
2140     }
2141     /* undocumented: windows ignores TVIF_PARAM and
2142      * always sets lParam           */
2143     tvItem->lParam = wineItem->lParam;
2144     if (tvItem->mask & TVIF_SELECTEDIMAGE) {
2145         tvItem->iSelectedImage = wineItem->iSelectedImage;
2146     }
2147     if (tvItem->mask & TVIF_STATE) {
2148         tvItem->state = wineItem->state & tvItem->stateMask;
2149     }
2150
2151     if (tvItem->mask & TVIF_TEXT) {
2152         if (wineItem->pszText == LPSTR_TEXTCALLBACKA) {
2153             tvItem->pszText = LPSTR_TEXTCALLBACKW;
2154             FIXME(" GetItem called with LPSTR_TEXTCALLBACK\n");
2155         }
2156         else if (wineItem->pszText) {
2157             TRACE("orig str %s at %p\n",
2158                   debugstr_a(wineItem->pszText), wineItem->pszText);
2159             MultiByteToWideChar(CP_ACP, 0, wineItem->pszText,
2160                                 -1 , tvItem->pszText, tvItem->cchTextMax);
2161         }
2162     }
2163
2164     TRACE("item %d<%p>, txt %p<%s>, img %p, action %x\n",
2165           iItem, tvItem, tvItem->pszText, debugstr_w(tvItem->pszText),
2166           &tvItem->iImage, tvItem->mask);
2167     return TRUE;
2168 }
2169
2170 static LRESULT
2171 TREEVIEW_SetItemW(TREEVIEW_INFO *infoPtr, LPTVITEMEXW tvItem)
2172 {
2173     TVITEMEXA tvItemA;
2174     INT len;
2175     LRESULT rc;
2176
2177     tvItemA.mask = tvItem->mask;
2178     tvItemA.hItem = tvItem->hItem;
2179     tvItemA.state = tvItem->state;
2180     tvItemA.stateMask = tvItem->stateMask;
2181     if (tvItem->mask & TVIF_TEXT) {
2182         len = WideCharToMultiByte(CP_ACP, 0, tvItem->pszText, -1,
2183                                   NULL ,0 , NULL,NULL);
2184         if (len) {
2185             len ++;
2186             tvItemA.pszText = HeapAlloc(GetProcessHeap(),0,len*sizeof(WCHAR));
2187             len = WideCharToMultiByte(CP_ACP, 0, tvItem->pszText, -1,
2188                                       tvItemA.pszText ,len*sizeof(WCHAR),
2189                                       NULL,NULL);
2190         }
2191         else
2192             tvItemA.pszText = NULL;
2193     }
2194     tvItemA.cchTextMax = tvItem->cchTextMax;
2195     tvItemA.iImage = tvItem->iImage;
2196     tvItemA.iSelectedImage = tvItem->iSelectedImage;
2197     tvItemA.cChildren = tvItem->cChildren;
2198     tvItemA.lParam = tvItem->lParam;
2199     tvItemA.iIntegral = tvItem->iIntegral;
2200
2201     rc = TREEVIEW_SetItemA(infoPtr,&tvItemA);
2202     HeapFree(GetProcessHeap(),0,tvItemA.pszText);
2203     return rc;
2204 }
2205
2206 static LRESULT
2207 TREEVIEW_GetItemState(TREEVIEW_INFO *infoPtr, HTREEITEM wineItem, UINT mask)
2208 {
2209     TRACE("\n");
2210
2211     if (!wineItem || !TREEVIEW_ValidItem(infoPtr, wineItem))
2212         return 0;
2213
2214     return (wineItem->state & mask);
2215 }
2216
2217 static LRESULT
2218 TREEVIEW_GetNextItem(TREEVIEW_INFO *infoPtr, UINT which, HTREEITEM wineItem)
2219 {
2220     TREEVIEW_ITEM *retval;
2221
2222     retval = 0;
2223
2224     /* handle all the global data here */
2225     switch (which)
2226     {
2227     case TVGN_CHILD:            /* Special case: child of 0 is root */
2228         if (wineItem)
2229             break;
2230         /* fall through */
2231     case TVGN_ROOT:
2232         retval = infoPtr->root->firstChild;
2233         break;
2234
2235     case TVGN_CARET:
2236         retval = infoPtr->selectedItem;
2237         break;
2238
2239     case TVGN_FIRSTVISIBLE:
2240         retval = infoPtr->firstVisible;
2241         break;
2242
2243     case TVGN_DROPHILITE:
2244         retval = infoPtr->dropItem;
2245         break;
2246
2247     case TVGN_LASTVISIBLE:
2248         retval = TREEVIEW_GetLastListItem(infoPtr, infoPtr->root);
2249         break;
2250     }
2251
2252     if (retval)
2253     {
2254         TRACE("flags:%x, returns %p\n", which, retval);
2255         return (LRESULT)retval;
2256     }
2257
2258     if (wineItem == TVI_ROOT) wineItem = infoPtr->root;
2259
2260     if (!TREEVIEW_ValidItem(infoPtr, wineItem))
2261         return FALSE;
2262
2263     switch (which)
2264     {
2265     case TVGN_NEXT:
2266         retval = wineItem->nextSibling;
2267         break;
2268     case TVGN_PREVIOUS:
2269         retval = wineItem->prevSibling;
2270         break;
2271     case TVGN_PARENT:
2272         retval = (wineItem->parent != infoPtr->root) ? wineItem->parent : NULL;
2273         break;
2274     case TVGN_CHILD:
2275         retval = wineItem->firstChild;
2276         break;
2277     case TVGN_NEXTVISIBLE:
2278         retval = TREEVIEW_GetNextListItem(infoPtr, wineItem);
2279         break;
2280     case TVGN_PREVIOUSVISIBLE:
2281         retval = TREEVIEW_GetPrevListItem(infoPtr, wineItem);
2282         break;
2283     default:
2284         TRACE("Unknown msg %x,item %p\n", which, wineItem);
2285         break;
2286     }
2287
2288     TRACE("flags:%x, item %p;returns %p\n", which, wineItem, retval);
2289     return (LRESULT)retval;
2290 }
2291
2292
2293 static LRESULT
2294 TREEVIEW_GetCount(TREEVIEW_INFO *infoPtr)
2295 {
2296     TRACE(" %d\n", infoPtr->uNumItems);
2297     return (LRESULT)infoPtr->uNumItems;
2298 }
2299
2300 static VOID
2301 TREEVIEW_ToggleItemState(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
2302 {
2303     if (infoPtr->dwStyle & TVS_CHECKBOXES)
2304     {
2305         static const unsigned int state_table[] = { 0, 2, 1 };
2306
2307         unsigned int state;
2308
2309         state = STATEIMAGEINDEX(item->state);
2310         TRACE("state:%x\n", state);
2311         item->state &= ~TVIS_STATEIMAGEMASK;
2312
2313         if (state < 3)
2314             state = state_table[state];
2315
2316         item->state |= INDEXTOSTATEIMAGEMASK(state);
2317
2318         TRACE("state:%x\n", state);
2319         TREEVIEW_Invalidate(infoPtr, item);
2320     }
2321 }
2322
2323
2324 /* Painting *************************************************************/
2325
2326 /* Draw the lines and expand button for an item. Also draws one section
2327  * of the line from item's parent to item's parent's next sibling. */
2328 static void
2329 TREEVIEW_DrawItemLines(TREEVIEW_INFO *infoPtr, HDC hdc, TREEVIEW_ITEM *item)
2330 {
2331     LONG centerx, centery;
2332     BOOL lar = ((infoPtr->dwStyle
2333                  & (TVS_LINESATROOT|TVS_HASLINES|TVS_HASBUTTONS))
2334                 > TVS_LINESATROOT);
2335
2336     if (!lar && item->iLevel == 0)
2337         return;
2338
2339     centerx = (item->linesOffset + item->stateOffset) / 2;
2340     centery = (item->rect.top + item->rect.bottom) / 2;
2341
2342     if (infoPtr->dwStyle & TVS_HASLINES)
2343     {
2344         HPEN hOldPen, hNewPen;
2345         HTREEITEM parent;
2346
2347         /*
2348          * Get a dotted grey pen
2349          */
2350         hNewPen = CreatePen(PS_ALTERNATE, 0, infoPtr->clrLine);
2351         hOldPen = SelectObject(hdc, hNewPen);
2352
2353         MoveToEx(hdc, item->stateOffset, centery, NULL);
2354         LineTo(hdc, centerx - 1, centery);
2355
2356         if (item->prevSibling || item->parent != infoPtr->root)
2357         {
2358             MoveToEx(hdc, centerx, item->rect.top, NULL);
2359             LineTo(hdc, centerx, centery);
2360         }
2361
2362         if (item->nextSibling)
2363         {
2364             MoveToEx(hdc, centerx, centery, NULL);
2365             LineTo(hdc, centerx, item->rect.bottom + 1);
2366         }
2367
2368         /* Draw the line from our parent to its next sibling. */
2369         parent = item->parent;
2370         while (parent != infoPtr->root)
2371         {
2372             int pcenterx = (parent->linesOffset + parent->stateOffset) / 2;
2373
2374             if (parent->nextSibling
2375                 /* skip top-levels unless TVS_LINESATROOT */
2376                 && parent->stateOffset > parent->linesOffset)
2377             {
2378                 MoveToEx(hdc, pcenterx, item->rect.top, NULL);
2379                 LineTo(hdc, pcenterx, item->rect.bottom + 1);
2380             }
2381
2382             parent = parent->parent;
2383         }
2384
2385         SelectObject(hdc, hOldPen);
2386         DeleteObject(hNewPen);
2387     }
2388
2389     /*
2390      * Display the (+/-) signs
2391      */
2392
2393     if (infoPtr->dwStyle & TVS_HASBUTTONS)
2394     {
2395         if (item->cChildren)
2396         {
2397             LONG height = item->rect.bottom - item->rect.top;
2398             LONG width  = item->stateOffset - item->linesOffset;
2399             LONG rectsize = min(height, width) / 4;
2400             /* plussize = ceil(rectsize * 3/4) */
2401             LONG plussize = (rectsize + 1) * 3 / 4;
2402
2403             HPEN hNewPen  = CreatePen(PS_SOLID, 0, infoPtr->clrLine);
2404             HPEN hOldPen  = SelectObject(hdc, hNewPen);
2405             HBRUSH hbr    = CreateSolidBrush(infoPtr->clrBk);
2406             HBRUSH hbrOld = SelectObject(hdc, hbr);
2407
2408             Rectangle(hdc, centerx - rectsize, centery - rectsize,
2409                       centerx + rectsize + 1, centery + rectsize + 1);
2410
2411             SelectObject(hdc, hbrOld);
2412             DeleteObject(hbr);
2413
2414             SelectObject(hdc, hOldPen);
2415             DeleteObject(hNewPen);
2416
2417             MoveToEx(hdc, centerx - plussize + 1, centery, NULL);
2418             LineTo(hdc, centerx + plussize, centery);
2419
2420             if (!(item->state & TVIS_EXPANDED))
2421             {
2422                 MoveToEx(hdc, centerx, centery - plussize + 1, NULL);
2423                 LineTo(hdc, centerx, centery + plussize);
2424             }
2425         }
2426     }
2427 }
2428
2429 static void
2430 TREEVIEW_DrawItem(TREEVIEW_INFO *infoPtr, HDC hdc, TREEVIEW_ITEM *wineItem)
2431 {
2432     INT cditem;
2433     HFONT hOldFont;
2434     int centery;
2435
2436     hOldFont = SelectObject(hdc, TREEVIEW_FontForItem(infoPtr, wineItem));
2437
2438     TREEVIEW_UpdateDispInfo(infoPtr, wineItem, CALLBACK_MASK_ALL);
2439
2440     /* The custom draw handler can query the text rectangle,
2441      * so get ready. */
2442     TREEVIEW_ComputeTextWidth(infoPtr, wineItem, hdc);
2443
2444     cditem = 0;
2445
2446     if (infoPtr->cdmode & CDRF_NOTIFYITEMDRAW)
2447     {
2448         cditem = TREEVIEW_SendCustomDrawItemNotify
2449             (infoPtr, hdc, wineItem, CDDS_ITEMPREPAINT);
2450         TRACE("prepaint:cditem-app returns 0x%x\n", cditem);
2451
2452         if (cditem & CDRF_SKIPDEFAULT)
2453         {
2454             SelectObject(hdc, hOldFont);
2455             return;
2456         }
2457     }
2458
2459     if (cditem & CDRF_NEWFONT)
2460         TREEVIEW_ComputeTextWidth(infoPtr, wineItem, hdc);
2461
2462     TREEVIEW_DrawItemLines(infoPtr, hdc, wineItem);
2463
2464     centery = (wineItem->rect.top + wineItem->rect.bottom) / 2;
2465
2466     /*
2467      * Display the images associated with this item
2468      */
2469     {
2470         INT imageIndex;
2471
2472         /* State images are displayed to the left of the Normal image
2473          * image number is in state; zero should be `display no image'.
2474          */
2475         imageIndex = STATEIMAGEINDEX(wineItem->state);
2476
2477         if (infoPtr->himlState && imageIndex)
2478         {
2479             ImageList_Draw(infoPtr->himlState, imageIndex, hdc,
2480                            wineItem->stateOffset,
2481                            centery - infoPtr->stateImageHeight / 2,
2482                            ILD_NORMAL);
2483         }
2484
2485         /* Now, draw the normal image; can be either selected or
2486          * non-selected image.
2487          */
2488
2489         if ((wineItem->state & TVIS_SELECTED) && (wineItem->iSelectedImage))
2490         {
2491             /* The item is currently selected */
2492             imageIndex = wineItem->iSelectedImage;
2493         }
2494         else
2495         {
2496             /* The item is not selected */
2497             imageIndex = wineItem->iImage;
2498         }
2499
2500         if (infoPtr->himlNormal)
2501         {
2502             int ovlIdx = wineItem->state & TVIS_OVERLAYMASK;
2503
2504             ImageList_Draw(infoPtr->himlNormal, imageIndex, hdc,
2505                            wineItem->imageOffset,
2506                            centery - infoPtr->normalImageHeight / 2,
2507                            ILD_NORMAL | ovlIdx);
2508         }
2509     }
2510
2511
2512     /*
2513      * Display the text associated with this item
2514      */
2515
2516     /* Don't paint item's text if it's being edited */
2517     if (!infoPtr->hwndEdit || (infoPtr->selectedItem != wineItem))
2518     {
2519         if (wineItem->pszText)
2520         {
2521             COLORREF oldTextColor = 0;
2522             INT oldBkMode;
2523             HBRUSH hbrBk = 0;
2524             BOOL inFocus = (GetFocus() == infoPtr->hwnd);
2525             RECT rcText;
2526
2527             oldBkMode = SetBkMode(hdc, TRANSPARENT);
2528
2529             /* - If item is drop target or it is selected and window is in focus -
2530              * use blue background (COLOR_HIGHLIGHT).
2531              * - If item is selected, window is not in focus, but it has style
2532              * TVS_SHOWSELALWAYS - use grey background (COLOR_BTNFACE)
2533              * - Otherwise - don't fill background
2534              */
2535             if ((wineItem->state & TVIS_DROPHILITED) || ((wineItem == infoPtr->focusedItem) && !(wineItem->state & TVIS_SELECTED)) ||
2536                 ((wineItem->state & TVIS_SELECTED) && (!infoPtr->focusedItem) &&
2537                  (inFocus || (infoPtr->dwStyle & TVS_SHOWSELALWAYS))))
2538             {
2539                 if ((wineItem->state & TVIS_DROPHILITED) || inFocus)
2540                 {
2541                     hbrBk = CreateSolidBrush(GetSysColor(COLOR_HIGHLIGHT));
2542                     oldTextColor =
2543                         SetTextColor(hdc, GetSysColor(COLOR_HIGHLIGHTTEXT));
2544                 }
2545                 else
2546                 {
2547                     hbrBk = CreateSolidBrush(GetSysColor(COLOR_BTNFACE));
2548
2549                     if (infoPtr->clrText == -1)
2550                         oldTextColor =
2551                             SetTextColor(hdc, GetSysColor(COLOR_WINDOWTEXT));
2552                     else
2553                         oldTextColor = SetTextColor(hdc, infoPtr->clrText);
2554                 }
2555             }
2556             else
2557             {
2558                 if (infoPtr->clrText == -1)
2559                     oldTextColor =
2560                         SetTextColor(hdc, GetSysColor(COLOR_WINDOWTEXT));
2561                 else
2562                     oldTextColor = SetTextColor(hdc, infoPtr->clrText);
2563             }
2564
2565             rcText.top = wineItem->rect.top;
2566             rcText.bottom = wineItem->rect.bottom;
2567             rcText.left = wineItem->textOffset;
2568             rcText.right = rcText.left + wineItem->textWidth + 4;
2569
2570             if (hbrBk)
2571             {
2572                 FillRect(hdc, &rcText, hbrBk);
2573                 DeleteObject(hbrBk);
2574             }
2575
2576             /* Draw the box around the selected item */
2577             if ((wineItem == infoPtr->selectedItem) && inFocus)
2578             {
2579                 DrawFocusRect(hdc,&rcText);
2580             }
2581
2582             InflateRect(&rcText, -2, -1); /* allow for the focus rect */
2583
2584             TRACE("drawing text %s at (%ld,%ld)-(%ld,%ld)\n",
2585                   debugstr_a(wineItem->pszText),
2586                   rcText.left, rcText.top, rcText.right, rcText.bottom);
2587
2588             /* Draw it */
2589             DrawTextA(hdc,
2590                       wineItem->pszText,
2591                       lstrlenA(wineItem->pszText),
2592                       &rcText,
2593                       DT_CENTER | DT_VCENTER | DT_SINGLELINE | DT_NOPREFIX);
2594
2595             /* Restore the hdc state */
2596             SetTextColor(hdc, oldTextColor);
2597
2598             if (oldBkMode != TRANSPARENT)
2599                 SetBkMode(hdc, oldBkMode);
2600         }
2601     }
2602
2603     /* Draw insertion mark if necessary */
2604
2605     if (infoPtr->insertMarkItem)
2606         TRACE("item:%d,mark:%d\n",
2607               TREEVIEW_GetItemIndex(infoPtr, wineItem),
2608               (int)infoPtr->insertMarkItem);
2609
2610     if (wineItem == infoPtr->insertMarkItem)
2611     {
2612         HPEN hNewPen, hOldPen;
2613         int offset;
2614         int left, right;
2615
2616         hNewPen = CreatePen(PS_SOLID, 2, infoPtr->clrInsertMark);
2617         hOldPen = SelectObject(hdc, hNewPen);
2618
2619         if (infoPtr->insertBeforeorAfter)
2620             offset = wineItem->rect.bottom - 1;
2621         else
2622             offset = wineItem->rect.top + 1;
2623
2624         left = wineItem->textOffset - 2;
2625         right = wineItem->textOffset + wineItem->textWidth + 2;
2626
2627         MoveToEx(hdc, left, offset - 3, NULL);
2628         LineTo(hdc, left, offset + 4);
2629
2630         MoveToEx(hdc, left, offset, NULL);
2631         LineTo(hdc, right + 1, offset);
2632
2633         MoveToEx(hdc, right, offset + 3, NULL);
2634         LineTo(hdc, right, offset - 4);
2635
2636         SelectObject(hdc, hOldPen);
2637         DeleteObject(hNewPen);
2638     }
2639
2640     if (cditem & CDRF_NOTIFYPOSTPAINT)
2641     {
2642         cditem = TREEVIEW_SendCustomDrawItemNotify
2643             (infoPtr, hdc, wineItem, CDDS_ITEMPOSTPAINT);
2644         TRACE("postpaint:cditem-app returns 0x%x\n", cditem);
2645     }
2646
2647     SelectObject(hdc, hOldFont);
2648 }
2649
2650 /* Computes treeHeight and treeWidth and updates the scroll bars.
2651  */
2652 static void
2653 TREEVIEW_UpdateScrollBars(TREEVIEW_INFO *infoPtr)
2654 {
2655     TREEVIEW_ITEM *wineItem;
2656     HWND hwnd = infoPtr->hwnd;
2657     BOOL vert = FALSE;
2658     BOOL horz = FALSE;
2659     SCROLLINFO si;
2660     LONG scrollX = infoPtr->scrollX;
2661
2662     infoPtr->treeWidth = 0;
2663     infoPtr->treeHeight = 0;
2664
2665     /* We iterate through all visible items in order to get the tree height
2666      * and width */
2667     wineItem = infoPtr->root->firstChild;
2668
2669     while (wineItem != NULL)
2670     {
2671         if (ISVISIBLE(wineItem))
2672         {
2673             /* actually we draw text at textOffset + 2 */
2674             if (2+wineItem->textOffset+wineItem->textWidth > infoPtr->treeWidth)
2675                 infoPtr->treeWidth = wineItem->textOffset+wineItem->textWidth+2;
2676
2677             /* This is scroll-adjusted, but we fix this below. */
2678             infoPtr->treeHeight = wineItem->rect.bottom;
2679         }
2680
2681         wineItem = TREEVIEW_GetNextListItem(infoPtr, wineItem);
2682     }
2683
2684     /* Fix the scroll adjusted treeHeight and treeWidth. */
2685     if (infoPtr->root->firstChild)
2686         infoPtr->treeHeight -= infoPtr->root->firstChild->rect.top;
2687
2688     infoPtr->treeWidth += infoPtr->scrollX;
2689
2690     if (infoPtr->dwStyle & TVS_NOSCROLL) return;
2691
2692     /* Adding one scroll bar may take up enough space that it forces us
2693      * to add the other as well. */
2694     if (infoPtr->treeHeight > infoPtr->clientHeight)
2695     {
2696         vert = TRUE;
2697
2698         if (infoPtr->treeWidth
2699             > infoPtr->clientWidth - GetSystemMetrics(SM_CXVSCROLL))
2700             horz = TRUE;
2701     }
2702     else if (infoPtr->treeWidth > infoPtr->clientWidth)
2703         horz = TRUE;
2704
2705     if (!vert && horz && infoPtr->treeHeight
2706         > infoPtr->clientHeight - GetSystemMetrics(SM_CYVSCROLL))
2707         vert = TRUE;
2708
2709     if (horz && (infoPtr->dwStyle & TVS_NOHSCROLL)) horz = FALSE;
2710
2711     si.cbSize = sizeof(SCROLLINFO);
2712     si.fMask  = SIF_POS|SIF_RANGE|SIF_PAGE;
2713     si.nMin   = 0;
2714
2715     if (vert)
2716     {
2717         si.nPage = TREEVIEW_GetVisibleCount(infoPtr);
2718        if ( si.nPage )
2719        {
2720            si.nPos  = infoPtr->firstVisible->visibleOrder;
2721            si.nMax  = infoPtr->maxVisibleOrder - 1;
2722
2723            SetScrollInfo(hwnd, SB_VERT, &si, TRUE);
2724
2725            if (!(infoPtr->uInternalStatus & TV_VSCROLL))
2726                ShowScrollBar(hwnd, SB_VERT, TRUE);
2727            infoPtr->uInternalStatus |= TV_VSCROLL;
2728        }
2729        else
2730        {
2731            if (infoPtr->uInternalStatus & TV_VSCROLL)
2732                ShowScrollBar(hwnd, SB_VERT, FALSE);
2733            infoPtr->uInternalStatus &= ~TV_VSCROLL;
2734        }
2735     }
2736     else
2737     {
2738         if (infoPtr->uInternalStatus & TV_VSCROLL)
2739             ShowScrollBar(hwnd, SB_VERT, FALSE);
2740         infoPtr->uInternalStatus &= ~TV_VSCROLL;
2741     }
2742
2743     if (horz)
2744     {
2745         si.nPage = infoPtr->clientWidth;
2746         si.nPos  = infoPtr->scrollX;
2747         si.nMax  = infoPtr->treeWidth - 1;
2748
2749         if (si.nPos > si.nMax - max( si.nPage-1, 0 ))
2750         {
2751            si.nPos = si.nMax - max( si.nPage-1, 0 );
2752            scrollX = si.nPos;
2753         }
2754
2755         if (!(infoPtr->uInternalStatus & TV_HSCROLL))
2756             ShowScrollBar(hwnd, SB_HORZ, TRUE);
2757         infoPtr->uInternalStatus |= TV_HSCROLL;
2758
2759         SetScrollInfo(hwnd, SB_HORZ, &si, TRUE);
2760     }
2761     else
2762     {
2763         if (infoPtr->uInternalStatus & TV_HSCROLL)
2764             ShowScrollBar(hwnd, SB_HORZ, FALSE);
2765         infoPtr->uInternalStatus &= ~TV_HSCROLL;
2766
2767         scrollX = 0;
2768     }
2769
2770     if (infoPtr->scrollX != scrollX)
2771     {
2772         TREEVIEW_HScroll(infoPtr,
2773                          MAKEWPARAM(SB_THUMBPOSITION, scrollX));
2774     }
2775
2776     if (!horz)
2777         infoPtr->uInternalStatus &= ~TV_HSCROLL;
2778 }
2779
2780 /* CtrlSpy doesn't mention this, but CorelDRAW's object manager needs it. */
2781 static LRESULT
2782 TREEVIEW_EraseBackground(TREEVIEW_INFO *infoPtr, HDC hDC)
2783 {
2784     HBRUSH hBrush = CreateSolidBrush(infoPtr->clrBk);
2785     RECT rect;
2786
2787     GetClientRect(infoPtr->hwnd, &rect);
2788     FillRect(hDC, &rect, hBrush);
2789     DeleteObject(hBrush);
2790
2791     return 1;
2792 }
2793
2794 static void
2795 TREEVIEW_Refresh(TREEVIEW_INFO *infoPtr, HDC hdc, RECT *rc)
2796 {
2797     HWND hwnd = infoPtr->hwnd;
2798     RECT rect = *rc;
2799     TREEVIEW_ITEM *wineItem;
2800
2801     if (infoPtr->clientHeight == 0 || infoPtr->clientWidth == 0)
2802     {
2803         TRACE("empty window\n");
2804         return;
2805     }
2806
2807     infoPtr->cdmode = TREEVIEW_SendCustomDrawNotify(infoPtr, CDDS_PREPAINT,
2808                                                     hdc, rect);
2809
2810     if (infoPtr->cdmode == CDRF_SKIPDEFAULT)
2811     {
2812         ReleaseDC(hwnd, hdc);
2813         return;
2814     }
2815
2816     for (wineItem = infoPtr->root->firstChild;
2817          wineItem != NULL;
2818          wineItem = TREEVIEW_GetNextListItem(infoPtr, wineItem))
2819     {
2820         if (ISVISIBLE(wineItem))
2821         {
2822             /* Avoid unneeded calculations */
2823             if (wineItem->rect.top > rect.bottom)
2824                 break;
2825             if (wineItem->rect.bottom < rect.top)
2826                 continue;
2827
2828             TREEVIEW_DrawItem(infoPtr, hdc, wineItem);
2829         }
2830     }
2831
2832     TREEVIEW_UpdateScrollBars(infoPtr);
2833
2834     if (infoPtr->cdmode & CDRF_NOTIFYPOSTPAINT)
2835         infoPtr->cdmode =
2836             TREEVIEW_SendCustomDrawNotify(infoPtr, CDDS_POSTPAINT, hdc, rect);
2837 }
2838
2839 static void
2840 TREEVIEW_Invalidate(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
2841 {
2842     if (item != NULL)
2843         InvalidateRect(infoPtr->hwnd, &item->rect, TRUE);
2844     else
2845         InvalidateRect(infoPtr->hwnd, NULL, TRUE);
2846 }
2847
2848 static LRESULT
2849 TREEVIEW_Paint(TREEVIEW_INFO *infoPtr, WPARAM wParam)
2850 {
2851     HDC hdc;
2852     PAINTSTRUCT ps;
2853     RECT rc;
2854
2855     TRACE("\n");
2856
2857     if (wParam)
2858     {
2859         hdc = (HDC)wParam;
2860         if (!GetUpdateRect(infoPtr->hwnd, &rc, TRUE))
2861         {
2862             HBITMAP hbitmap;
2863             BITMAP bitmap;
2864             hbitmap = GetCurrentObject(hdc, OBJ_BITMAP);
2865             if (!hbitmap) return 0;
2866             GetObjectA(hbitmap, sizeof(BITMAP), &bitmap);
2867             rc.left = 0; rc.top = 0;
2868             rc.right = bitmap.bmWidth;
2869             rc.bottom = bitmap.bmHeight;
2870             TREEVIEW_EraseBackground(infoPtr, (HDC)wParam);
2871         }
2872     }
2873     else
2874     {
2875         hdc = BeginPaint(infoPtr->hwnd, &ps);
2876         rc = ps.rcPaint;
2877     }
2878
2879     if(infoPtr->bRedraw) /* WM_SETREDRAW sets bRedraw */
2880         TREEVIEW_Refresh(infoPtr, hdc, &rc);
2881
2882     if (!wParam)
2883         EndPaint(infoPtr->hwnd, &ps);
2884
2885     return 0;
2886 }
2887
2888
2889 /* Sorting **************************************************************/
2890
2891 /***************************************************************************
2892  * Forward the DPA local callback to the treeview owner callback
2893  */
2894 static INT WINAPI
2895 TREEVIEW_CallBackCompare(TREEVIEW_ITEM *first, TREEVIEW_ITEM *second, LPTVSORTCB pCallBackSort)
2896 {
2897     /* Forward the call to the client-defined callback */
2898     return pCallBackSort->lpfnCompare(first->lParam,
2899                                       second->lParam,
2900                                       pCallBackSort->lParam);
2901 }
2902
2903 /***************************************************************************
2904  * Treeview native sort routine: sort on item text.
2905  */
2906 static INT WINAPI
2907 TREEVIEW_SortOnName(TREEVIEW_ITEM *first, TREEVIEW_ITEM *second,
2908                      TREEVIEW_INFO *infoPtr)
2909 {
2910     TREEVIEW_UpdateDispInfo(infoPtr, first, TVIF_TEXT);
2911     TREEVIEW_UpdateDispInfo(infoPtr, second, TVIF_TEXT);
2912
2913     return strcasecmp(first->pszText, second->pszText);
2914 }
2915
2916 /* Returns the number of physical children belonging to item. */
2917 static INT
2918 TREEVIEW_CountChildren(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
2919 {
2920     INT cChildren = 0;
2921     HTREEITEM hti;
2922
2923     for (hti = item->firstChild; hti != NULL; hti = hti->nextSibling)
2924         cChildren++;
2925
2926     return cChildren;
2927 }
2928
2929 /* Returns a DPA containing a pointer to each physical child of item in
2930  * sibling order. If item has no children, an empty DPA is returned. */
2931 static HDPA
2932 TREEVIEW_BuildChildDPA(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
2933 {
2934     HTREEITEM child = item->firstChild;
2935
2936     HDPA list = DPA_Create(8);
2937     if (list == 0) return NULL;
2938
2939     for (child = item->firstChild; child != NULL; child = child->nextSibling)
2940     {
2941         if (DPA_InsertPtr(list, INT_MAX, child) == -1)
2942         {
2943             DPA_Destroy(list);
2944             return NULL;
2945         }
2946     }
2947
2948     return list;
2949 }
2950
2951 /***************************************************************************
2952  * Setup the treeview structure with regards of the sort method
2953  * and sort the children of the TV item specified in lParam
2954  * fRecurse: currently unused. Should be zero.
2955  * parent: if pSort!=NULL, should equal pSort->hParent.
2956  *         otherwise, item which child items are to be sorted.
2957  * pSort:  sort method info. if NULL, sort on item text.
2958  *         if non-NULL, sort on item's lParam content, and let the
2959  *         application decide what that means. See also TVM_SORTCHILDRENCB.
2960  */
2961
2962 static LRESULT
2963 TREEVIEW_Sort(TREEVIEW_INFO *infoPtr, BOOL fRecurse, HTREEITEM parent,
2964               LPTVSORTCB pSort)
2965 {
2966     INT cChildren;
2967     PFNDPACOMPARE pfnCompare;
2968     LPARAM lpCompare;
2969
2970     /* undocumented feature: TVI_ROOT or NULL means `sort the whole tree' */
2971     if (parent == TVI_ROOT || parent == NULL)
2972         parent = infoPtr->root;
2973
2974     /* Check for a valid handle to the parent item */
2975     if (!TREEVIEW_ValidItem(infoPtr, parent))
2976     {
2977         ERR("invalid item hParent=%x\n", (INT)parent);
2978         return FALSE;
2979     }
2980
2981     if (pSort)
2982     {
2983         pfnCompare = (PFNDPACOMPARE)TREEVIEW_CallBackCompare;
2984         lpCompare = (LPARAM)pSort;
2985     }
2986     else
2987     {
2988         pfnCompare = (PFNDPACOMPARE)TREEVIEW_SortOnName;
2989         lpCompare = (LPARAM)infoPtr;
2990     }
2991
2992     cChildren = TREEVIEW_CountChildren(infoPtr, parent);
2993
2994     /* Make sure there is something to sort */
2995     if (cChildren > 1)
2996     {
2997         /* TREEVIEW_ITEM rechaining */
2998         INT count = 0;
2999         HTREEITEM item = 0;
3000         HTREEITEM nextItem = 0;
3001         HTREEITEM prevItem = 0;
3002
3003         HDPA sortList = TREEVIEW_BuildChildDPA(infoPtr, parent);
3004
3005         if (sortList == NULL)
3006             return FALSE;
3007
3008         /* let DPA sort the list */
3009         DPA_Sort(sortList, pfnCompare, lpCompare);
3010
3011         /* The order of DPA entries has been changed, so fixup the
3012          * nextSibling and prevSibling pointers. */
3013
3014         item = (HTREEITEM)DPA_GetPtr(sortList, count++);
3015         while ((nextItem = (HTREEITEM)DPA_GetPtr(sortList, count++)) != NULL)
3016         {
3017             /* link the two current item toghether */
3018             item->nextSibling = nextItem;
3019             nextItem->prevSibling = item;
3020
3021             if (prevItem == NULL)
3022             {
3023                 /* this is the first item, update the parent */
3024                 parent->firstChild = item;
3025                 item->prevSibling = NULL;
3026             }
3027             else
3028             {
3029                 /* fix the back chaining */
3030                 item->prevSibling = prevItem;
3031             }
3032
3033             /* get ready for the next one */
3034             prevItem = item;
3035             item = nextItem;
3036         }
3037
3038         /* the last item is pointed to by item and never has a sibling */
3039         item->nextSibling = NULL;
3040         parent->lastChild = item;
3041
3042         DPA_Destroy(sortList);
3043
3044         TREEVIEW_VerifyTree(infoPtr);
3045
3046         if (parent->state & TVIS_EXPANDED)
3047         {
3048             int visOrder = infoPtr->firstVisible->visibleOrder;
3049
3050         if (parent == infoPtr->root)
3051             TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
3052         else
3053             TREEVIEW_RecalculateVisibleOrder(infoPtr, parent);
3054
3055             if (TREEVIEW_IsChildOf(parent, infoPtr->firstVisible))
3056             {
3057                 TREEVIEW_ITEM *item;
3058
3059                 for (item = infoPtr->root->firstChild; item != NULL;
3060                      item = TREEVIEW_GetNextListItem(infoPtr, item))
3061                 {
3062                     if (item->visibleOrder == visOrder)
3063                         break;
3064                 }
3065
3066                 if (!item) item = parent->firstChild;
3067                 TREEVIEW_SetFirstVisible(infoPtr, item, FALSE);
3068             }
3069
3070             TREEVIEW_Invalidate(infoPtr, NULL);
3071         }
3072
3073         return TRUE;
3074     }
3075     return FALSE;
3076 }
3077
3078
3079 /***************************************************************************
3080  * Setup the treeview structure with regards of the sort method
3081  * and sort the children of the TV item specified in lParam
3082  */
3083 static LRESULT
3084 TREEVIEW_SortChildrenCB(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPTVSORTCB pSort)
3085 {
3086     return TREEVIEW_Sort(infoPtr, wParam, pSort->hParent, pSort);
3087 }
3088
3089
3090 /***************************************************************************
3091  * Sort the children of the TV item specified in lParam.
3092  */
3093 static LRESULT
3094 TREEVIEW_SortChildren(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
3095 {
3096     return TREEVIEW_Sort(infoPtr, (BOOL)wParam, (HTREEITEM)lParam, NULL);
3097 }
3098
3099
3100 /* Expansion/Collapse ***************************************************/
3101
3102 static BOOL
3103 TREEVIEW_SendExpanding(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
3104                        UINT action)
3105 {
3106     return !TREEVIEW_SendTreeviewNotify(infoPtr, TVN_ITEMEXPANDINGW, action,
3107                                         TVIF_HANDLE | TVIF_STATE | TVIF_PARAM
3108                                         | TVIF_IMAGE | TVIF_SELECTEDIMAGE,
3109                                         0, wineItem);
3110 }
3111
3112 static VOID
3113 TREEVIEW_SendExpanded(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
3114                       UINT action)
3115 {
3116     TREEVIEW_SendTreeviewNotify(infoPtr, TVN_ITEMEXPANDEDW, action,
3117                                 TVIF_HANDLE | TVIF_STATE | TVIF_PARAM
3118                                 | TVIF_IMAGE | TVIF_SELECTEDIMAGE,
3119                                 0, wineItem);
3120 }
3121
3122
3123 /* This corresponds to TVM_EXPAND with TVE_COLLAPSE.
3124  * bRemoveChildren corresponds to TVE_COLLAPSERESET. */
3125 static BOOL
3126 TREEVIEW_Collapse(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
3127                   BOOL bRemoveChildren, BOOL bUser)
3128 {
3129     UINT action = TVE_COLLAPSE | (bRemoveChildren ? TVE_COLLAPSERESET : 0);
3130     BOOL bSetSelection, bSetFirstVisible;
3131
3132     TRACE("TVE_COLLAPSE %p %s\n", wineItem, TREEVIEW_ItemName(wineItem));
3133
3134     if (!(wineItem->state & TVIS_EXPANDED))
3135         return FALSE;
3136
3137     if (bUser)
3138         TREEVIEW_SendExpanding(infoPtr, wineItem, action);
3139
3140     if (wineItem->firstChild == NULL)
3141         return FALSE;
3142
3143     wineItem->state &= ~TVIS_EXPANDED;
3144
3145     if (bUser)
3146         TREEVIEW_SendExpanded(infoPtr, wineItem, action);
3147
3148     bSetSelection = (infoPtr->selectedItem != NULL
3149                      && TREEVIEW_IsChildOf(wineItem, infoPtr->selectedItem));
3150
3151     bSetFirstVisible = (infoPtr->firstVisible != NULL
3152                         && TREEVIEW_IsChildOf(wineItem, infoPtr->firstVisible));
3153
3154     if (bRemoveChildren)
3155     {
3156         TRACE("TVE_COLLAPSERESET\n");
3157         wineItem->state &= ~TVIS_EXPANDEDONCE;
3158         TREEVIEW_RemoveAllChildren(infoPtr, wineItem);
3159     }
3160
3161     if (wineItem->firstChild)
3162     {
3163         TREEVIEW_ITEM *item, *sibling;
3164
3165         sibling = TREEVIEW_GetNextListItem(infoPtr, wineItem);
3166
3167         for (item = wineItem->firstChild; item != sibling;
3168              item = TREEVIEW_GetNextListItem(infoPtr, item))
3169         {
3170             item->visibleOrder = -1;
3171         }
3172     }
3173
3174     TREEVIEW_RecalculateVisibleOrder(infoPtr, wineItem);
3175
3176     TREEVIEW_SetFirstVisible(infoPtr, bSetFirstVisible ? wineItem
3177                              : infoPtr->firstVisible, TRUE);
3178
3179     if (bSetSelection)
3180     {
3181         /* Don't call DoSelectItem, it sends notifications. */
3182         if (TREEVIEW_ValidItem(infoPtr, infoPtr->selectedItem))
3183             infoPtr->selectedItem->state &= ~TVIS_SELECTED;
3184         wineItem->state |= TVIS_SELECTED;
3185         infoPtr->selectedItem = wineItem;
3186
3187         TREEVIEW_EnsureVisible(infoPtr, wineItem, FALSE);
3188     }
3189
3190     TREEVIEW_UpdateScrollBars(infoPtr);
3191     TREEVIEW_Invalidate(infoPtr, NULL);
3192
3193     return TRUE;
3194 }
3195
3196 static BOOL
3197 TREEVIEW_Expand(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem,
3198                 BOOL bExpandPartial, BOOL bUser)
3199 {
3200     TRACE("\n");
3201
3202     if (wineItem->state & TVIS_EXPANDED)
3203         return FALSE;
3204
3205     TRACE("TVE_EXPAND %p %s\n", wineItem, TREEVIEW_ItemName(wineItem));
3206
3207     if (bUser || ((wineItem->cChildren != 0) &&
3208                   !(wineItem->state & TVIS_EXPANDEDONCE)))
3209     {
3210         if (!TREEVIEW_SendExpanding(infoPtr, wineItem, TVE_EXPAND))
3211         {
3212             TRACE("  TVN_ITEMEXPANDING returned TRUE, exiting...\n");
3213             return FALSE;
3214         }
3215
3216         if (!wineItem->firstChild)
3217             return FALSE;
3218
3219         wineItem->state |= TVIS_EXPANDED;
3220         TREEVIEW_SendExpanded(infoPtr, wineItem, TVE_EXPAND);
3221         wineItem->state |= TVIS_EXPANDEDONCE;
3222     }
3223     else
3224     {
3225         if (!wineItem->firstChild)
3226             return FALSE;
3227
3228         /* this item has already been expanded */
3229         wineItem->state |= TVIS_EXPANDED;
3230     }
3231
3232     if (bExpandPartial)
3233         FIXME("TVE_EXPANDPARTIAL not implemented\n");
3234
3235     TREEVIEW_RecalculateVisibleOrder(infoPtr, wineItem);
3236     TREEVIEW_UpdateSubTree(infoPtr, wineItem);
3237     TREEVIEW_UpdateScrollBars(infoPtr);
3238
3239     /* Scroll up so that as many children as possible are visible.
3240      * This looses when expanding causes an HScroll bar to appear, but we
3241      * don't know that yet, so the last item is obscured. */
3242     if (wineItem->firstChild != NULL)
3243     {
3244         int nChildren = wineItem->lastChild->visibleOrder
3245             - wineItem->firstChild->visibleOrder + 1;
3246
3247         int visible_pos = wineItem->visibleOrder
3248             - infoPtr->firstVisible->visibleOrder;
3249
3250         int rows_below = TREEVIEW_GetVisibleCount(infoPtr) - visible_pos - 1;
3251
3252         if (visible_pos > 0 && nChildren > rows_below)
3253         {
3254             int scroll = nChildren - rows_below;
3255
3256             if (scroll > visible_pos)
3257                 scroll = visible_pos;
3258
3259             if (scroll > 0)
3260             {
3261                 TREEVIEW_ITEM *newFirstVisible
3262                     = TREEVIEW_GetListItem(infoPtr, infoPtr->firstVisible,
3263                                            scroll);
3264
3265
3266                 TREEVIEW_SetFirstVisible(infoPtr, newFirstVisible, TRUE);
3267             }
3268         }
3269     }
3270
3271     TREEVIEW_Invalidate(infoPtr, NULL);
3272
3273     return TRUE;
3274 }
3275
3276 static BOOL
3277 TREEVIEW_Toggle(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *wineItem, BOOL bUser)
3278 {
3279     TRACE("\n");
3280
3281     if (wineItem->state & TVIS_EXPANDED)
3282         return TREEVIEW_Collapse(infoPtr, wineItem, FALSE, bUser);
3283     else
3284         return TREEVIEW_Expand(infoPtr, wineItem, FALSE, bUser);
3285 }
3286
3287 static VOID
3288 TREEVIEW_ExpandAll(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
3289 {
3290     TREEVIEW_Expand(infoPtr, item, FALSE, TRUE);
3291
3292     for (item = item->firstChild; item != NULL; item = item->nextSibling)
3293     {
3294         if (TREEVIEW_HasChildren(infoPtr, item))
3295             TREEVIEW_ExpandAll(infoPtr, item);
3296     }
3297 }
3298
3299 /* Note:If the specified item is the child of a collapsed parent item,
3300    the parent's list of child items is (recursively) expanded to reveal the
3301    specified item. This is mentioned for TREEVIEW_SelectItem; don't
3302    know if it also applies here.
3303 */
3304
3305 static LRESULT
3306 TREEVIEW_ExpandMsg(TREEVIEW_INFO *infoPtr, UINT flag, HTREEITEM wineItem)
3307 {
3308     if (!TREEVIEW_ValidItem(infoPtr, wineItem))
3309         return 0;
3310
3311     TRACE("For (%s) item:%d, flags %x, state:%d\n",
3312               TREEVIEW_ItemName(wineItem), flag,
3313               TREEVIEW_GetItemIndex(infoPtr, wineItem), wineItem->state);
3314
3315     switch (flag & TVE_TOGGLE)
3316     {
3317     case TVE_COLLAPSE:
3318         return TREEVIEW_Collapse(infoPtr, wineItem, flag & TVE_COLLAPSERESET,
3319                                  FALSE);
3320
3321     case TVE_EXPAND:
3322         return TREEVIEW_Expand(infoPtr, wineItem, flag & TVE_EXPANDPARTIAL,
3323                                FALSE);
3324
3325     case TVE_TOGGLE:
3326         return TREEVIEW_Toggle(infoPtr, wineItem, TRUE);
3327
3328     default:
3329         return 0;
3330     }
3331
3332 #if 0
3333     TRACE("Exiting, Item %p state is now %d...\n", wineItem, wineItem->state);
3334 #endif
3335 }
3336
3337 /* Hit-Testing **********************************************************/
3338
3339 static TREEVIEW_ITEM *
3340 TREEVIEW_HitTestPoint(TREEVIEW_INFO *infoPtr, POINT pt)
3341 {
3342     TREEVIEW_ITEM *wineItem;
3343     LONG row;
3344
3345     if (!infoPtr->firstVisible)
3346         return NULL;
3347
3348     row = pt.y / infoPtr->uItemHeight + infoPtr->firstVisible->visibleOrder;
3349
3350     for (wineItem = infoPtr->firstVisible; wineItem != NULL;
3351          wineItem = TREEVIEW_GetNextListItem(infoPtr, wineItem))
3352     {
3353         if (row >= wineItem->visibleOrder
3354             && row < wineItem->visibleOrder + wineItem->iIntegral)
3355             break;
3356     }
3357
3358     return wineItem;
3359 }
3360
3361 static LRESULT
3362 TREEVIEW_HitTest(TREEVIEW_INFO *infoPtr, LPTVHITTESTINFO lpht)
3363 {
3364     TREEVIEW_ITEM *wineItem;
3365     RECT rect;
3366     UINT status;
3367     LONG x, y;
3368
3369     lpht->hItem = 0;
3370     GetClientRect(infoPtr->hwnd, &rect);
3371     status = 0;
3372     x = lpht->pt.x;
3373     y = lpht->pt.y;
3374
3375     if (x < rect.left)
3376     {
3377         status |= TVHT_TOLEFT;
3378     }
3379     else if (x > rect.right)
3380     {
3381         status |= TVHT_TORIGHT;
3382     }
3383
3384     if (y < rect.top)
3385     {
3386         status |= TVHT_ABOVE;
3387     }
3388     else if (y > rect.bottom)
3389     {
3390         status |= TVHT_BELOW;
3391     }
3392
3393     if (status)
3394     {
3395         lpht->flags = status;
3396         return (LRESULT)(HTREEITEM)NULL;
3397     }
3398
3399     wineItem = TREEVIEW_HitTestPoint(infoPtr, lpht->pt);
3400     if (!wineItem)
3401     {
3402         lpht->flags = TVHT_NOWHERE;
3403         return (LRESULT)(HTREEITEM)NULL;
3404     }
3405
3406     if (x >= wineItem->textOffset + wineItem->textWidth)
3407     {
3408         lpht->flags = TVHT_ONITEMRIGHT;
3409     }
3410     else if (x >= wineItem->textOffset)
3411     {
3412         lpht->flags = TVHT_ONITEMLABEL;
3413     }
3414     else if (x >= wineItem->imageOffset)
3415     {
3416         lpht->flags = TVHT_ONITEMICON;
3417     }
3418     else if (x >= wineItem->stateOffset)
3419     {
3420         lpht->flags = TVHT_ONITEMSTATEICON;
3421     }
3422     else if (x >= wineItem->linesOffset && infoPtr->dwStyle & TVS_HASBUTTONS)
3423     {
3424         lpht->flags = TVHT_ONITEMBUTTON;
3425     }
3426     else
3427     {
3428         lpht->flags = TVHT_ONITEMINDENT;
3429     }
3430
3431     lpht->hItem = wineItem;
3432     TRACE("(%ld,%ld):result %x\n", lpht->pt.x, lpht->pt.y, lpht->flags);
3433
3434     return (LRESULT)wineItem;
3435 }
3436
3437 /* Item Label Editing ***************************************************/
3438
3439 static LRESULT
3440 TREEVIEW_GetEditControl(TREEVIEW_INFO *infoPtr)
3441 {
3442     return (LRESULT)infoPtr->hwndEdit;
3443 }
3444
3445 static LRESULT CALLBACK
3446 TREEVIEW_Edit_SubclassProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
3447 {
3448     TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(GetParent(hwnd));
3449     BOOL bCancel = FALSE;
3450     LRESULT rc;
3451
3452     switch (uMsg)
3453     {
3454     case WM_PAINT:
3455          TRACE("WM_PAINT start\n");
3456          rc = CallWindowProcA(infoPtr->wpEditOrig, hwnd, uMsg, wParam,
3457                                  lParam);
3458          TRACE("WM_PAINT done\n");
3459          return rc;
3460
3461     case WM_KILLFOCUS:
3462         if (infoPtr->bIgnoreEditKillFocus)
3463             return TRUE;
3464         break;
3465
3466     case WM_GETDLGCODE:
3467         return DLGC_WANTARROWS | DLGC_WANTALLKEYS;
3468
3469     case WM_KEYDOWN:
3470         if (wParam == (WPARAM)VK_ESCAPE)
3471         {
3472             bCancel = TRUE;
3473             break;
3474         }
3475         else if (wParam == (WPARAM)VK_RETURN)
3476         {
3477             break;
3478         }
3479
3480         /* fall through */
3481     default:
3482         return CallWindowProcA(infoPtr->wpEditOrig, hwnd, uMsg, wParam, lParam);
3483     }
3484
3485     /* Processing TVN_ENDLABELEDIT message could kill the focus       */
3486     /* eg. Using a messagebox                                         */
3487
3488     infoPtr->bIgnoreEditKillFocus = TRUE;
3489     TREEVIEW_EndEditLabelNow(infoPtr, bCancel || !infoPtr->bLabelChanged);
3490     infoPtr->bIgnoreEditKillFocus = FALSE;
3491
3492     return 0;
3493 }
3494
3495
3496 /* should handle edit control messages here */
3497
3498 static LRESULT
3499 TREEVIEW_Command(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
3500 {
3501     TRACE("%x %ld\n", wParam, lParam);
3502
3503     switch (HIWORD(wParam))
3504     {
3505     case EN_UPDATE:
3506         {
3507             /*
3508              * Adjust the edit window size
3509              */
3510             char buffer[1024];
3511             TREEVIEW_ITEM *editItem = infoPtr->selectedItem;
3512             HDC hdc = GetDC(infoPtr->hwndEdit);
3513             SIZE sz;
3514             int len;
3515             HFONT hFont, hOldFont = 0;
3516
3517             infoPtr->bLabelChanged = TRUE;
3518
3519             len = GetWindowTextA(infoPtr->hwndEdit, buffer, sizeof(buffer));
3520
3521             /* Select font to get the right dimension of the string */
3522             hFont = (HFONT)SendMessageA(infoPtr->hwndEdit, WM_GETFONT, 0, 0);
3523             if (hFont != 0)
3524             {
3525                 hOldFont = SelectObject(hdc, hFont);
3526             }
3527
3528             if (GetTextExtentPoint32A(hdc, buffer, strlen(buffer), &sz))
3529             {
3530                 TEXTMETRICA textMetric;
3531
3532                 /* Add Extra spacing for the next character */
3533                 GetTextMetricsA(hdc, &textMetric);
3534                 sz.cx += (textMetric.tmMaxCharWidth * 2);
3535
3536                 sz.cx = max(sz.cx, textMetric.tmMaxCharWidth * 3);
3537                 sz.cx = min(sz.cx,
3538                             infoPtr->clientWidth - editItem->textOffset + 2);
3539
3540                 SetWindowPos(infoPtr->hwndEdit,
3541                              HWND_TOP,
3542                              0,
3543                              0,
3544                              sz.cx,
3545                              editItem->rect.bottom - editItem->rect.top + 3,
3546                              SWP_NOMOVE | SWP_DRAWFRAME);
3547             }
3548
3549             if (hFont != 0)
3550             {
3551                 SelectObject(hdc, hOldFont);
3552             }
3553
3554             ReleaseDC(infoPtr->hwnd, hdc);
3555             break;
3556         }
3557
3558     default:
3559         return SendMessageA(infoPtr->hwndNotify, WM_COMMAND, wParam, lParam);
3560     }
3561
3562     return 0;
3563 }
3564
3565 static HWND
3566 TREEVIEW_EditLabelA(TREEVIEW_INFO *infoPtr, HTREEITEM hItem)
3567 {
3568     HWND hwnd = infoPtr->hwnd;
3569     HWND hwndEdit;
3570     SIZE sz;
3571     TREEVIEW_ITEM *editItem = hItem;
3572     HINSTANCE hinst = (HINSTANCE)GetWindowLongA(hwnd, GWL_HINSTANCE);
3573     HDC hdc;
3574     HFONT hOldFont=0;
3575     TEXTMETRICA textMetric;
3576
3577     TRACE("%x %p\n", (unsigned)hwnd, hItem);
3578     if (!TREEVIEW_ValidItem(infoPtr, editItem))
3579         return NULL;
3580
3581     if (infoPtr->hwndEdit)
3582         return infoPtr->hwndEdit;
3583
3584     infoPtr->bLabelChanged = FALSE;
3585
3586     /* Make sure that edit item is selected */
3587     TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, hItem, TVC_UNKNOWN);
3588     TREEVIEW_EnsureVisible(infoPtr, hItem, TRUE);
3589
3590     TREEVIEW_UpdateDispInfo(infoPtr, editItem, TVIF_TEXT);
3591
3592     hdc = GetDC(hwnd);
3593     /* Select the font to get appropriate metric dimensions */
3594     if (infoPtr->hFont != 0)
3595     {
3596         hOldFont = SelectObject(hdc, infoPtr->hFont);
3597     }
3598
3599     /* Get string length in pixels */
3600     GetTextExtentPoint32A(hdc, editItem->pszText, strlen(editItem->pszText),
3601                           &sz);
3602
3603     /* Add Extra spacing for the next character */
3604     GetTextMetricsA(hdc, &textMetric);
3605     sz.cx += (textMetric.tmMaxCharWidth * 2);
3606
3607     sz.cx = max(sz.cx, textMetric.tmMaxCharWidth * 3);
3608     sz.cx = min(sz.cx, infoPtr->clientWidth - editItem->textOffset + 2);
3609
3610     if (infoPtr->hFont != 0)
3611     {
3612         SelectObject(hdc, hOldFont);
3613     }
3614
3615     ReleaseDC(hwnd, hdc);
3616     hwndEdit = CreateWindowExA(WS_EX_LEFT,
3617                                "EDIT",
3618                                0,
3619                                WS_CHILD | WS_BORDER | ES_AUTOHSCROLL |
3620                                WS_CLIPSIBLINGS | ES_WANTRETURN |
3621                                ES_LEFT, editItem->textOffset - 2,
3622                                editItem->rect.top - 1, sz.cx + 3,
3623                                editItem->rect.bottom -
3624                                editItem->rect.top + 3, hwnd, 0, hinst, 0);
3625 /* FIXME: (HMENU)IDTVEDIT,pcs->hInstance,0); */
3626
3627     infoPtr->hwndEdit = hwndEdit;
3628
3629     /* Get a 2D border. */
3630     SetWindowLongA(hwndEdit, GWL_EXSTYLE,
3631                    GetWindowLongA(hwndEdit, GWL_EXSTYLE) & ~WS_EX_CLIENTEDGE);
3632     SetWindowLongA(hwndEdit, GWL_STYLE,
3633                    GetWindowLongA(hwndEdit, GWL_STYLE) | WS_BORDER);
3634
3635     SendMessageA(hwndEdit, WM_SETFONT,
3636                  (WPARAM)TREEVIEW_FontForItem(infoPtr, editItem), FALSE);
3637
3638     infoPtr->wpEditOrig = (WNDPROC)SetWindowLongA(hwndEdit, GWL_WNDPROC,
3639                                                   (DWORD)
3640                                                   TREEVIEW_Edit_SubclassProc);
3641
3642     if (TREEVIEW_BeginLabelEditNotify(infoPtr, editItem))
3643     {
3644         DestroyWindow(hwndEdit);
3645         infoPtr->hwndEdit = 0;
3646         return NULL;
3647     }
3648
3649     infoPtr->selectedItem = hItem;
3650     SetWindowTextA(hwndEdit, editItem->pszText);
3651     SetFocus(hwndEdit);
3652     SendMessageA(hwndEdit, EM_SETSEL, 0, -1);
3653     ShowWindow(hwndEdit, SW_SHOW);
3654
3655     return hwndEdit;
3656 }
3657
3658
3659 static LRESULT
3660 TREEVIEW_EndEditLabelNow(TREEVIEW_INFO *infoPtr, BOOL bCancel)
3661 {
3662     HWND hwnd = infoPtr->hwnd;
3663     TREEVIEW_ITEM *editedItem = infoPtr->selectedItem;
3664     NMTVDISPINFOA tvdi;
3665     BOOL bCommit;
3666     char tmpText[1024] = { '\0' };
3667     int iLength = 0;
3668
3669     if (!infoPtr->hwndEdit)
3670         return FALSE;
3671
3672     tvdi.hdr.hwndFrom = hwnd;
3673     tvdi.hdr.idFrom = GetWindowLongA(hwnd, GWL_ID);
3674     tvdi.hdr.code = get_notifycode(infoPtr, TVN_ENDLABELEDITW);
3675     tvdi.item.mask = 0;
3676     tvdi.item.hItem = editedItem;
3677     tvdi.item.state = editedItem->state;
3678     tvdi.item.lParam = editedItem->lParam;
3679
3680     if (!bCancel)
3681     {
3682         iLength = GetWindowTextA(infoPtr->hwndEdit, tmpText, 1023);
3683
3684         if (iLength >= 1023)
3685         {
3686             ERR("Insufficient space to retrieve new item label\n");
3687         }
3688
3689         tvdi.item.pszText = tmpText;
3690         tvdi.item.cchTextMax = iLength + 1;
3691     }
3692     else
3693     {
3694         tvdi.item.pszText = NULL;
3695         tvdi.item.cchTextMax = 0;
3696     }
3697
3698     bCommit = (BOOL)TREEVIEW_SendRealNotify(infoPtr,
3699                                  (WPARAM)tvdi.hdr.idFrom, (LPARAM)&tvdi);
3700
3701     if (!bCancel && bCommit)    /* Apply the changes */
3702     {
3703         if (strcmp(tmpText, editedItem->pszText) != 0)
3704         {
3705             if (NULL == ReAlloc(editedItem->pszText, iLength + 1))
3706             {
3707                 ERR("OutOfMemory, cannot allocate space for label\n");
3708                 DestroyWindow(infoPtr->hwndEdit);
3709                 infoPtr->hwndEdit = 0;
3710                 return FALSE;
3711             }
3712             else
3713             {
3714                 editedItem->cchTextMax = iLength + 1;
3715                 lstrcpyA(editedItem->pszText, tmpText);
3716             }
3717         }
3718     }
3719
3720     ShowWindow(infoPtr->hwndEdit, SW_HIDE);
3721     DestroyWindow(infoPtr->hwndEdit);
3722     infoPtr->hwndEdit = 0;
3723     return TRUE;
3724 }
3725
3726 static LRESULT
3727 TREEVIEW_HandleTimer(TREEVIEW_INFO *infoPtr, WPARAM wParam)
3728 {
3729     if (wParam != TV_EDIT_TIMER)
3730     {
3731         ERR("got unknown timer\n");
3732         return 1;
3733     }
3734
3735     KillTimer(infoPtr->hwnd, TV_EDIT_TIMER);
3736     infoPtr->Timer &= ~TV_EDIT_TIMER_SET;
3737
3738     TREEVIEW_EditLabelA(infoPtr, infoPtr->selectedItem);
3739
3740     return 0;
3741 }
3742
3743
3744 /* Mouse Tracking/Drag **************************************************/
3745
3746 /***************************************************************************
3747  * This is quite unusual piece of code, but that's how it's implemented in
3748  * Windows.
3749  */
3750 static LRESULT
3751 TREEVIEW_TrackMouse(TREEVIEW_INFO *infoPtr, POINT pt)
3752 {
3753     INT cxDrag = GetSystemMetrics(SM_CXDRAG);
3754     INT cyDrag = GetSystemMetrics(SM_CYDRAG);
3755     RECT r;
3756     MSG msg;
3757
3758     r.top = pt.y - cyDrag;
3759     r.left = pt.x - cxDrag;
3760     r.bottom = pt.y + cyDrag;
3761     r.right = pt.x + cxDrag;
3762
3763     SetCapture(infoPtr->hwnd);
3764
3765     while (1)
3766     {
3767         if (PeekMessageA(&msg, 0, 0, 0, PM_REMOVE | PM_NOYIELD))
3768         {
3769             if (msg.message == WM_MOUSEMOVE)
3770             {
3771                 pt.x = (short)LOWORD(msg.lParam);
3772                 pt.y = (short)HIWORD(msg.lParam);
3773                 if (PtInRect(&r, pt))
3774                     continue;
3775                 else
3776                 {
3777                     ReleaseCapture();
3778                     return 1;
3779                 }
3780             }
3781             else if (msg.message >= WM_LBUTTONDOWN &&
3782                      msg.message <= WM_RBUTTONDBLCLK)
3783             {
3784                 if (msg.message == WM_RBUTTONUP)
3785                     TREEVIEW_RButtonUp(infoPtr, &pt);
3786                 break;
3787             }
3788
3789             DispatchMessageA(&msg);
3790         }
3791
3792         if (GetCapture() != infoPtr->hwnd)
3793             return 0;
3794     }
3795
3796     ReleaseCapture();
3797     return 0;
3798 }
3799
3800
3801 static LRESULT
3802 TREEVIEW_LButtonDoubleClick(TREEVIEW_INFO *infoPtr, LPARAM lParam)
3803 {
3804     TREEVIEW_ITEM *wineItem;
3805     TVHITTESTINFO hit;
3806
3807     TRACE("\n");
3808     SetFocus(infoPtr->hwnd);
3809
3810     if (infoPtr->Timer & TV_EDIT_TIMER_SET)
3811     {
3812         /* If there is pending 'edit label' event - kill it now */
3813         KillTimer(infoPtr->hwnd, TV_EDIT_TIMER);
3814     }
3815
3816     hit.pt.x = (short)LOWORD(lParam);
3817     hit.pt.y = (short)HIWORD(lParam);
3818
3819     wineItem = (TREEVIEW_ITEM *)TREEVIEW_HitTest(infoPtr, &hit);
3820     if (!wineItem)
3821         return 0;
3822     TRACE("item %d\n", TREEVIEW_GetItemIndex(infoPtr, wineItem));
3823
3824     if (TREEVIEW_SendSimpleNotify(infoPtr, NM_DBLCLK) == FALSE)
3825     {                           /* FIXME! */
3826         switch (hit.flags)
3827         {
3828         case TVHT_ONITEMRIGHT:
3829             /* FIXME: we should not have sent NM_DBLCLK in this case. */
3830             break;
3831
3832         case TVHT_ONITEMINDENT:
3833             if (!(infoPtr->dwStyle & TVS_HASLINES))
3834             {
3835                 break;
3836             }
3837             else
3838             {
3839                 int level = hit.pt.x / infoPtr->uIndent;
3840                 if (!(infoPtr->dwStyle & TVS_LINESATROOT)) level++;
3841
3842                 while (wineItem->iLevel > level)
3843                 {
3844                     wineItem = wineItem->parent;
3845                 }
3846
3847                 /* fall through */
3848             }
3849
3850         case TVHT_ONITEMLABEL:
3851         case TVHT_ONITEMICON:
3852         case TVHT_ONITEMBUTTON:
3853             TREEVIEW_Toggle(infoPtr, wineItem, TRUE);
3854             break;
3855
3856         case TVHT_ONITEMSTATEICON:
3857            if (infoPtr->dwStyle & TVS_CHECKBOXES)
3858                TREEVIEW_ToggleItemState(infoPtr, wineItem);
3859            else
3860                TREEVIEW_Toggle(infoPtr, wineItem, TRUE);
3861            break;
3862         }
3863     }
3864     return TRUE;
3865 }
3866
3867
3868 static LRESULT
3869 TREEVIEW_LButtonDown(TREEVIEW_INFO *infoPtr, LPARAM lParam)
3870 {
3871     HWND hwnd = infoPtr->hwnd;
3872     TVHITTESTINFO ht;
3873     BOOL bTrack;
3874     HTREEITEM tempItem;
3875
3876     /* If Edit control is active - kill it and return.
3877      * The best way to do it is to set focus to itself.
3878      * Edit control subclassed procedure will automatically call
3879      * EndEditLabelNow.
3880      */
3881     if (infoPtr->hwndEdit)
3882     {
3883         SetFocus(hwnd);
3884         return 0;
3885     }
3886
3887     ht.pt.x = (short)LOWORD(lParam);
3888     ht.pt.y = (short)HIWORD(lParam);
3889
3890     TREEVIEW_HitTest(infoPtr, &ht);
3891     TRACE("item %d\n", TREEVIEW_GetItemIndex(infoPtr, ht.hItem));
3892
3893     /* update focusedItem and redraw both items */
3894     if(ht.hItem && (ht.flags & TVHT_ONITEM))
3895     {
3896         infoPtr->focusedItem = ht.hItem;
3897         InvalidateRect(hwnd, &(((HTREEITEM)(ht.hItem))->rect), TRUE);
3898
3899         if(infoPtr->selectedItem)
3900             InvalidateRect(hwnd, &(infoPtr->selectedItem->rect), TRUE);
3901     }
3902
3903     bTrack = (ht.flags & TVHT_ONITEM)
3904         && !(infoPtr->dwStyle & TVS_DISABLEDRAGDROP);
3905
3906     /* Send NM_CLICK right away */
3907     if (!bTrack)
3908         if (TREEVIEW_SendSimpleNotify(infoPtr, NM_CLICK))
3909             goto setfocus;
3910
3911     if (ht.flags & TVHT_ONITEMBUTTON)
3912     {
3913         TREEVIEW_Toggle(infoPtr, ht.hItem, TRUE);
3914         goto setfocus;
3915     }
3916     else if (bTrack)
3917     {   /* if TREEVIEW_TrackMouse == 1 dragging occurred and the cursor left the dragged item's rectangle */
3918         if (TREEVIEW_TrackMouse(infoPtr, ht.pt))
3919         {
3920             TREEVIEW_SendTreeviewDnDNotify(infoPtr, TVN_BEGINDRAGW, ht.hItem, ht.pt);
3921             infoPtr->dropItem = ht.hItem;
3922
3923             /* clean up focusedItem as we dragged and won't select this item */
3924             if(infoPtr->focusedItem)
3925             {
3926                 /* refresh the item that was focused */
3927                 tempItem = infoPtr->focusedItem;
3928                 infoPtr->focusedItem = 0;
3929                 InvalidateRect(infoPtr->hwnd, &tempItem->rect, TRUE);
3930
3931                 /* refresh the selected item to return the filled background */
3932                 InvalidateRect(infoPtr->hwnd, &(infoPtr->selectedItem->rect), TRUE);
3933             }
3934
3935             return 0;
3936         }
3937     }
3938
3939     if (bTrack && TREEVIEW_SendSimpleNotify(infoPtr, NM_CLICK))
3940         goto setfocus;
3941
3942     /*
3943      * If the style allows editing and the node is already selected
3944      * and the click occurred on the item label...
3945      */
3946     if ((infoPtr->dwStyle & TVS_EDITLABELS) &&
3947                 (ht.flags & TVHT_ONITEMLABEL) && (infoPtr->selectedItem == ht.hItem))
3948     {
3949         if (infoPtr->Timer & TV_EDIT_TIMER_SET)
3950             KillTimer(hwnd, TV_EDIT_TIMER);
3951
3952         SetTimer(hwnd, TV_EDIT_TIMER, GetDoubleClickTime(), 0);
3953         infoPtr->Timer |= TV_EDIT_TIMER_SET;
3954     }
3955     else if (ht.flags & (TVHT_ONITEMICON|TVHT_ONITEMLABEL)) /* select the item if the hit was inside of the icon or text */
3956     {
3957         /*
3958          * if we are TVS_SINGLEEXPAND then we want this single click to
3959          * do a bunch of things.
3960          */
3961         if((infoPtr->dwStyle & TVS_SINGLEEXPAND) &&
3962           (infoPtr->hwndEdit == 0))
3963         {
3964             TREEVIEW_ITEM *SelItem;
3965
3966             /*
3967              * Send the notification
3968              */
3969             TREEVIEW_SendTreeviewNotify(infoPtr, TVN_SINGLEEXPAND, TVC_UNKNOWN, TVIF_HANDLE | TVIF_PARAM, ht.hItem, 0);
3970
3971             /*
3972              * Close the previous selection all the way to the root
3973              * as long as the new selection is not a child
3974              */
3975             if((infoPtr->selectedItem)
3976                 && (infoPtr->selectedItem != ht.hItem))
3977             {
3978                 BOOL closeit = TRUE;
3979                 SelItem = ht.hItem;
3980
3981                 /* determine if the hitItem is a child of the currently selected item */
3982                 while(closeit && SelItem && TREEVIEW_ValidItem(infoPtr, SelItem) && (SelItem != infoPtr->root))
3983                 {
3984                     closeit = (SelItem != infoPtr->selectedItem);
3985                     SelItem = SelItem->parent;
3986                 }
3987
3988                 if(closeit)
3989                 {
3990                     if(TREEVIEW_ValidItem(infoPtr, infoPtr->selectedItem))
3991                         SelItem = infoPtr->selectedItem;
3992
3993                     while(SelItem && (SelItem != ht.hItem) && TREEVIEW_ValidItem(infoPtr, SelItem) && (SelItem != infoPtr->root))
3994                     {
3995                         TREEVIEW_Collapse(infoPtr, SelItem, FALSE, FALSE);
3996                         SelItem = SelItem->parent;
3997                     }
3998                 }
3999             }
4000
4001             /*
4002              * Expand the current item
4003              */
4004             TREEVIEW_Expand(infoPtr, ht.hItem, TVE_TOGGLE, FALSE);
4005         }
4006
4007         /* Select the current item */
4008         TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, ht.hItem, TVC_BYMOUSE);
4009     }
4010     else if (ht.flags & TVHT_ONITEMSTATEICON)
4011     {
4012         /* TVS_CHECKBOXES requires us to toggle the current state */
4013         if (infoPtr->dwStyle & TVS_CHECKBOXES)
4014             TREEVIEW_ToggleItemState(infoPtr, ht.hItem);
4015     }
4016
4017   setfocus:
4018     SetFocus(hwnd);
4019     return 0;
4020 }
4021
4022
4023 static LRESULT
4024 TREEVIEW_RButtonDown(TREEVIEW_INFO *infoPtr, LPARAM lParam)
4025 {
4026     TVHITTESTINFO ht;
4027
4028     if (infoPtr->hwndEdit)
4029     {
4030         SetFocus(infoPtr->hwnd);
4031         return 0;
4032     }
4033
4034     ht.pt.x = (short)LOWORD(lParam);
4035     ht.pt.y = (short)HIWORD(lParam);
4036
4037     TREEVIEW_HitTest(infoPtr, &ht);
4038
4039     if (TREEVIEW_TrackMouse(infoPtr, ht.pt))
4040     {
4041         if (ht.hItem)
4042         {
4043             TREEVIEW_SendTreeviewDnDNotify(infoPtr, TVN_BEGINRDRAGW, ht.hItem, ht.pt);
4044             infoPtr->dropItem = ht.hItem;
4045         }
4046     }
4047     else
4048     {
4049         SetFocus(infoPtr->hwnd);
4050         TREEVIEW_SendSimpleNotify(infoPtr, NM_RCLICK);
4051     }
4052
4053     return 0;
4054 }
4055
4056 static LRESULT
4057 TREEVIEW_RButtonUp(TREEVIEW_INFO *infoPtr, LPPOINT pPt)
4058 {
4059     return 0;
4060 }
4061
4062
4063 static LRESULT
4064 TREEVIEW_CreateDragImage(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
4065 {
4066     TREEVIEW_ITEM *dragItem = (HTREEITEM)lParam;
4067     INT cx, cy;
4068     HDC hdc, htopdc;
4069     HWND hwtop;
4070     HBITMAP hbmp, hOldbmp;
4071     SIZE size;
4072     RECT rc;
4073     HFONT hOldFont;
4074
4075     TRACE("\n");
4076
4077     if (!(infoPtr->himlNormal))
4078         return 0;
4079
4080     if (!dragItem || !TREEVIEW_ValidItem(infoPtr, dragItem))
4081         return 0;
4082
4083     TREEVIEW_UpdateDispInfo(infoPtr, dragItem, TVIF_TEXT);
4084
4085     hwtop = GetDesktopWindow();
4086     htopdc = GetDC(hwtop);
4087     hdc = CreateCompatibleDC(htopdc);
4088
4089     hOldFont = SelectObject(hdc, infoPtr->hFont);
4090     GetTextExtentPoint32A(hdc, dragItem->pszText, lstrlenA(dragItem->pszText),
4091                           &size);
4092     TRACE("%ld %ld %s %d\n", size.cx, size.cy, dragItem->pszText,
4093           lstrlenA(dragItem->pszText));
4094     hbmp = CreateCompatibleBitmap(htopdc, size.cx, size.cy);
4095     hOldbmp = SelectObject(hdc, hbmp);
4096
4097     ImageList_GetIconSize(infoPtr->himlNormal, &cx, &cy);
4098     size.cx += cx;
4099     if (cy > size.cy)
4100         size.cy = cy;
4101
4102     infoPtr->dragList = ImageList_Create(size.cx, size.cy, ILC_COLOR, 10, 10);
4103     ImageList_Draw(infoPtr->himlNormal, dragItem->iImage, hdc, 0, 0,
4104                    ILD_NORMAL);
4105
4106 /*
4107  ImageList_GetImageInfo (infoPtr->himlNormal, dragItem->hItem, &iminfo);
4108  ImageList_AddMasked (infoPtr->dragList, iminfo.hbmImage, CLR_DEFAULT);
4109 */
4110
4111 /* draw item text */
4112
4113     SetRect(&rc, cx, 0, size.cx, size.cy);
4114     DrawTextA(hdc, dragItem->pszText, lstrlenA(dragItem->pszText), &rc,
4115               DT_LEFT);
4116     SelectObject(hdc, hOldFont);
4117     SelectObject(hdc, hOldbmp);
4118
4119     ImageList_Add(infoPtr->dragList, hbmp, 0);
4120
4121     DeleteDC(hdc);
4122     DeleteObject(hbmp);
4123     ReleaseDC(hwtop, htopdc);
4124
4125     return (LRESULT)infoPtr->dragList;
4126 }
4127
4128 /* Selection ************************************************************/
4129
4130 static LRESULT
4131 TREEVIEW_DoSelectItem(TREEVIEW_INFO *infoPtr, INT action, HTREEITEM newSelect,
4132                       INT cause)
4133 {
4134     TREEVIEW_ITEM *prevSelect;
4135     RECT rcFocused;
4136
4137     assert(newSelect == NULL || TREEVIEW_ValidItem(infoPtr, newSelect));
4138
4139     TRACE("Entering item %p (%s), flag %x, cause %x, state %d\n",
4140           newSelect, TREEVIEW_ItemName(newSelect), action, cause,
4141           newSelect ? newSelect->state : 0);
4142
4143     /* reset and redraw focusedItem if focusedItem was set so we don't */
4144     /* have to worry about the previously focused item when we set a new one */
4145     if(infoPtr->focusedItem)
4146     {
4147         rcFocused = (infoPtr->focusedItem)->rect;
4148         infoPtr->focusedItem = 0;
4149         InvalidateRect(infoPtr->hwnd, &rcFocused, TRUE);
4150     }
4151
4152     switch (action)
4153     {
4154     case TVGN_CARET:
4155         prevSelect = infoPtr->selectedItem;
4156
4157         if (prevSelect == newSelect)
4158             return FALSE;
4159
4160         if (TREEVIEW_SendTreeviewNotify(infoPtr,
4161                                         TVN_SELCHANGINGW,
4162                                         cause,
4163                                         TVIF_HANDLE | TVIF_STATE | TVIF_PARAM,
4164                                         prevSelect,
4165                                         newSelect))
4166             return FALSE;
4167
4168         if (prevSelect)
4169             prevSelect->state &= ~TVIS_SELECTED;
4170         if (newSelect)
4171             newSelect->state |= TVIS_SELECTED;
4172
4173         infoPtr->selectedItem = newSelect;
4174
4175         TREEVIEW_EnsureVisible(infoPtr, infoPtr->selectedItem, FALSE);
4176
4177         TREEVIEW_SendTreeviewNotify(infoPtr,
4178                                     TVN_SELCHANGEDW,
4179                                     cause,
4180                                     TVIF_HANDLE | TVIF_STATE | TVIF_PARAM,
4181                                     prevSelect,
4182                                     newSelect);
4183         TREEVIEW_Invalidate(infoPtr, prevSelect);
4184         TREEVIEW_Invalidate(infoPtr, newSelect);
4185         break;
4186
4187     case TVGN_DROPHILITE:
4188         prevSelect = infoPtr->dropItem;
4189
4190         if (prevSelect)
4191             prevSelect->state &= ~TVIS_DROPHILITED;
4192
4193         infoPtr->dropItem = newSelect;
4194
4195         if (newSelect)
4196             newSelect->state |= TVIS_DROPHILITED;
4197
4198         TREEVIEW_Invalidate(infoPtr, prevSelect);
4199         TREEVIEW_Invalidate(infoPtr, newSelect);
4200         break;
4201
4202     case TVGN_FIRSTVISIBLE:
4203         TREEVIEW_EnsureVisible(infoPtr, newSelect, FALSE);
4204         TREEVIEW_SetFirstVisible(infoPtr, newSelect, TRUE);
4205         TREEVIEW_Invalidate(infoPtr, NULL);
4206         break;
4207     }
4208
4209     TRACE("Leaving state %d\n", newSelect ? newSelect->state : 0);
4210     return TRUE;
4211 }
4212
4213 /* FIXME: handle NM_KILLFOCUS etc */
4214 static LRESULT
4215 TREEVIEW_SelectItem(TREEVIEW_INFO *infoPtr, INT wParam, HTREEITEM item)
4216 {
4217     if (item != NULL && !TREEVIEW_ValidItem(infoPtr, item))
4218         return FALSE;
4219
4220     TRACE("%p (%s) %d\n", item, TREEVIEW_ItemName(item), wParam);
4221
4222     if (!TREEVIEW_DoSelectItem(infoPtr, wParam, item, TVC_UNKNOWN))
4223         return FALSE;
4224
4225     return TRUE;
4226 }
4227
4228 /*************************************************************************
4229  *              TREEVIEW_ProcessLetterKeys
4230  *
4231  *  Processes keyboard messages generated by pressing the letter keys
4232  *  on the keyboard.
4233  *  What this does is perform a case insensitive search from the
4234  *  current position with the following quirks:
4235  *  - If two chars or more are pressed in quick succession we search
4236  *    for the corresponding string (e.g. 'abc').
4237  *  - If there is a delay we wipe away the current search string and
4238  *    restart with just that char.
4239  *  - If the user keeps pressing the same character, whether slowly or
4240  *    fast, so that the search string is entirely composed of this
4241  *    character ('aaaaa' for instance), then we search for first item
4242  *    that starting with that character.
4243  *  - If the user types the above character in quick succession, then
4244  *    we must also search for the corresponding string ('aaaaa'), and
4245  *    go to that string if there is a match.
4246  *
4247  * RETURNS
4248  *
4249  *  Zero.
4250  *
4251  * BUGS
4252  *
4253  *  - The current implementation has a list of characters it will
4254  *    accept and it ignores averything else. In particular it will
4255  *    ignore accentuated characters which seems to match what
4256  *    Windows does. But I'm not sure it makes sense to follow
4257  *    Windows there.
4258  *  - We don't sound a beep when the search fails.
4259  *  - The search should start from the focused item, not from the selected
4260  *    item. One reason for this is to allow for multiple selections in trees.
4261  *    But currently infoPtr->focusedItem does not seem very usable.
4262  *
4263  * SEE ALSO
4264  *
4265  *  TREEVIEW_ProcessLetterKeys
4266  */
4267 static INT TREEVIEW_ProcessLetterKeys(
4268     HWND hwnd, /* handle to the window */
4269     WPARAM charCode, /* the character code, the actual character */
4270     LPARAM keyData /* key data */
4271     )
4272 {
4273     TREEVIEW_INFO *infoPtr;
4274     HTREEITEM nItem;
4275     HTREEITEM endidx,idx;
4276     TVITEMEXA item;
4277     CHAR buffer[MAX_PATH];
4278     DWORD timestamp,elapsed;
4279
4280     /* simple parameter checking */
4281     if (!hwnd || !charCode || !keyData)
4282         return 0;
4283
4284     infoPtr=(TREEVIEW_INFO*)GetWindowLongA(hwnd, 0);
4285     if (!infoPtr)
4286         return 0;
4287
4288     /* only allow the valid WM_CHARs through */
4289     if (!isalnum(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         charCode != '}' && charCode != '[' && charCode != '{' &&
4297         charCode != '/' && charCode != '?' && charCode != '>' &&
4298         charCode != '<' && charCode != ',' && charCode != '~')
4299         return 0;
4300
4301     /* compute how much time elapsed since last keypress */
4302     timestamp = GetTickCount();
4303     if (timestamp > infoPtr->lastKeyPressTimestamp) {
4304         elapsed=timestamp-infoPtr->lastKeyPressTimestamp;
4305     } else {
4306         elapsed=infoPtr->lastKeyPressTimestamp-timestamp;
4307     }
4308
4309     /* update the search parameters */
4310     infoPtr->lastKeyPressTimestamp=timestamp;
4311     if (elapsed < KEY_DELAY) {
4312         if (infoPtr->nSearchParamLength < sizeof(infoPtr->szSearchParam)) {
4313             infoPtr->szSearchParam[infoPtr->nSearchParamLength++]=charCode;
4314         }
4315         if (infoPtr->charCode != charCode) {
4316             infoPtr->charCode=charCode=0;
4317         }
4318     } else {
4319         infoPtr->charCode=charCode;
4320         infoPtr->szSearchParam[0]=charCode;
4321         infoPtr->nSearchParamLength=1;
4322         /* Redundant with the 1 char string */
4323         charCode=0;
4324     }
4325
4326     /* and search from the current position */
4327     nItem=NULL;
4328     if (infoPtr->selectedItem != NULL) {
4329         endidx=infoPtr->selectedItem;
4330         /* if looking for single character match,
4331          * then we must always move forward
4332          */
4333         if (infoPtr->nSearchParamLength == 1)
4334             idx=TREEVIEW_GetNextListItem(infoPtr,endidx);
4335         else
4336             idx=endidx;
4337     } else {
4338         endidx=NULL;
4339         idx=infoPtr->root->firstChild;
4340     }
4341     do {
4342         if (idx == NULL) {
4343             if (endidx == NULL)
4344                 break;
4345             idx=infoPtr->root->firstChild;
4346         }
4347
4348         /* get item */
4349         ZeroMemory(&item, sizeof(item));
4350         item.mask = TVIF_TEXT;
4351         item.hItem = idx;
4352         item.pszText = buffer;
4353         item.cchTextMax = sizeof(buffer);
4354         TREEVIEW_GetItemA( infoPtr, &item );
4355
4356         /* check for a match */
4357         if (strncasecmp(item.pszText,infoPtr->szSearchParam,infoPtr->nSearchParamLength) == 0) {
4358             nItem=idx;
4359             break;
4360         } else if ( (charCode != 0) && (nItem == NULL) &&
4361                     (nItem != infoPtr->selectedItem) &&
4362                     (strncasecmp(item.pszText,infoPtr->szSearchParam,1) == 0) ) {
4363             /* This would work but we must keep looking for a longer match */
4364             nItem=idx;
4365         }
4366         idx=TREEVIEW_GetNextListItem(infoPtr,idx);
4367     } while (idx != endidx);
4368
4369     if (nItem != NULL) {
4370         if (TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, nItem, TVC_BYKEYBOARD)) {
4371             TREEVIEW_EnsureVisible(infoPtr, nItem, FALSE);
4372         }
4373     }
4374
4375     return 0;
4376 }
4377
4378 /* Scrolling ************************************************************/
4379
4380 static LRESULT
4381 TREEVIEW_EnsureVisible(TREEVIEW_INFO *infoPtr, HTREEITEM item, BOOL bHScroll)
4382 {
4383     HTREEITEM newFirstVisible = NULL;
4384     int visible_pos;
4385
4386     if (!TREEVIEW_ValidItem(infoPtr, item))
4387         return FALSE;
4388
4389     if (!ISVISIBLE(item))
4390     {
4391         /* Expand parents as necessary. */
4392         HTREEITEM parent;
4393
4394         /* see if we are trying to ensure that root is vislble */
4395         if((item != infoPtr->root) && TREEVIEW_ValidItem(infoPtr, item))
4396           parent = item->parent;
4397         else
4398           parent = item; /* this item is the topmost item */
4399
4400         while (parent != infoPtr->root)
4401         {
4402             if (!(parent->state & TVIS_EXPANDED))
4403                 TREEVIEW_Expand(infoPtr, parent, FALSE, FALSE);
4404
4405             parent = parent->parent;
4406         }
4407     }
4408
4409     TRACE("%p (%s) %ld - %ld\n", item, TREEVIEW_ItemName(item), item->visibleOrder,
4410           infoPtr->firstVisible->visibleOrder);
4411
4412     visible_pos = item->visibleOrder - infoPtr->firstVisible->visibleOrder;
4413
4414     if (visible_pos < 0)
4415     {
4416         /* item is before the start of the list: put it at the top. */
4417         newFirstVisible = item;
4418     }
4419     else if (visible_pos >= TREEVIEW_GetVisibleCount(infoPtr)
4420              /* Sometimes, before we are displayed, GVC is 0, causing us to
4421               * spuriously scroll up. */
4422              && visible_pos > 0)
4423     {
4424         /* item is past the end of the list. */
4425         int scroll = visible_pos - TREEVIEW_GetVisibleCount(infoPtr);
4426
4427         newFirstVisible = TREEVIEW_GetListItem(infoPtr, infoPtr->firstVisible,
4428                                                scroll + 1);
4429     }
4430
4431     if (bHScroll)
4432     {
4433         /* Scroll window so item's text is visible as much as possible */
4434         /* Calculation of amount of extra space is taken from EditLabel code */
4435         INT pos, x;
4436         TEXTMETRICA textMetric;
4437         HDC hdc = GetWindowDC(infoPtr->hwnd);
4438
4439         x = item->textWidth;
4440
4441         GetTextMetricsA(hdc, &textMetric);
4442         ReleaseDC(infoPtr->hwnd, hdc);
4443
4444         x += (textMetric.tmMaxCharWidth * 2);
4445         x = max(x, textMetric.tmMaxCharWidth * 3);
4446
4447         if (item->textOffset < 0)
4448            pos = item->textOffset;
4449         else if (item->textOffset + x > infoPtr->clientWidth)
4450         {
4451            if (x > infoPtr->clientWidth)
4452               pos = item->textOffset;
4453            else
4454               pos = item->textOffset + x - infoPtr->clientWidth;
4455         }
4456         else
4457            pos = 0;
4458
4459         TREEVIEW_HScroll(infoPtr, MAKEWPARAM(SB_THUMBPOSITION, infoPtr->scrollX + pos));
4460     }
4461
4462     if (newFirstVisible != NULL && newFirstVisible != infoPtr->firstVisible)
4463     {
4464         TREEVIEW_SetFirstVisible(infoPtr, newFirstVisible, TRUE);
4465
4466         return TRUE;
4467     }
4468
4469     return FALSE;
4470 }
4471
4472 static VOID
4473 TREEVIEW_SetFirstVisible(TREEVIEW_INFO *infoPtr,
4474                          TREEVIEW_ITEM *newFirstVisible,
4475                          BOOL bUpdateScrollPos)
4476 {
4477     int gap_size;
4478
4479     TRACE("%p: %s\n", newFirstVisible, TREEVIEW_ItemName(newFirstVisible));
4480
4481     if (newFirstVisible != NULL)
4482     {
4483         /* Prevent an empty gap from appearing at the bottom... */
4484         gap_size = TREEVIEW_GetVisibleCount(infoPtr)
4485             - infoPtr->maxVisibleOrder + newFirstVisible->visibleOrder;
4486
4487         if (gap_size > 0)
4488         {
4489             newFirstVisible = TREEVIEW_GetListItem(infoPtr, newFirstVisible,
4490                                                    -gap_size);
4491
4492             /* ... unless we just don't have enough items. */
4493             if (newFirstVisible == NULL)
4494                 newFirstVisible = infoPtr->root->firstChild;
4495         }
4496     }
4497
4498     if (infoPtr->firstVisible != newFirstVisible)
4499     {
4500         if (infoPtr->firstVisible == NULL || newFirstVisible == NULL)
4501         {
4502             infoPtr->firstVisible = newFirstVisible;
4503             TREEVIEW_Invalidate(infoPtr, NULL);
4504         }
4505         else
4506         {
4507             TREEVIEW_ITEM *item;
4508             int scroll = infoPtr->uItemHeight *
4509                          (infoPtr->firstVisible->visibleOrder
4510                           - newFirstVisible->visibleOrder);
4511
4512             infoPtr->firstVisible = newFirstVisible;
4513
4514             for (item = infoPtr->root->firstChild; item != NULL;
4515                  item = TREEVIEW_GetNextListItem(infoPtr, item))
4516             {
4517                item->rect.top += scroll;
4518                item->rect.bottom += scroll;
4519             }
4520
4521             if (bUpdateScrollPos)
4522                 SetScrollPos(infoPtr->hwnd, SB_VERT,
4523                               newFirstVisible->visibleOrder, TRUE);
4524
4525             ScrollWindow(infoPtr->hwnd, 0, scroll, NULL, NULL);
4526             UpdateWindow(infoPtr->hwnd);
4527         }
4528     }
4529 }
4530
4531 /************************************************************************
4532  * VScroll is always in units of visible items. i.e. we always have a
4533  * visible item aligned to the top of the control. (Unless we have no
4534  * items at all.)
4535  */
4536 static LRESULT
4537 TREEVIEW_VScroll(TREEVIEW_INFO *infoPtr, WPARAM wParam)
4538 {
4539     TREEVIEW_ITEM *oldFirstVisible = infoPtr->firstVisible;
4540     TREEVIEW_ITEM *newFirstVisible = NULL;
4541
4542     int nScrollCode = LOWORD(wParam);
4543
4544     TRACE("wp %x\n", wParam);
4545
4546     if (!(infoPtr->uInternalStatus & TV_VSCROLL))
4547         return 0;
4548
4549     if (infoPtr->hwndEdit)
4550         SetFocus(infoPtr->hwnd);
4551
4552     if (!oldFirstVisible)
4553     {
4554         assert(infoPtr->root->firstChild == NULL);
4555         return 0;
4556     }
4557
4558     switch (nScrollCode)
4559     {
4560     case SB_TOP:
4561         newFirstVisible = infoPtr->root->firstChild;
4562         break;
4563
4564     case SB_BOTTOM:
4565         newFirstVisible = TREEVIEW_GetLastListItem(infoPtr, infoPtr->root);
4566         break;
4567
4568     case SB_LINEUP:
4569         newFirstVisible = TREEVIEW_GetPrevListItem(infoPtr, oldFirstVisible);
4570         break;
4571
4572     case SB_LINEDOWN:
4573         newFirstVisible = TREEVIEW_GetNextListItem(infoPtr, oldFirstVisible);
4574         break;
4575
4576     case SB_PAGEUP:
4577         newFirstVisible = TREEVIEW_GetListItem(infoPtr, oldFirstVisible,
4578                                                -max(1, TREEVIEW_GetVisibleCount(infoPtr)));
4579         break;
4580
4581     case SB_PAGEDOWN:
4582         newFirstVisible = TREEVIEW_GetListItem(infoPtr, oldFirstVisible,
4583                                                max(1, TREEVIEW_GetVisibleCount(infoPtr)));
4584         break;
4585
4586     case SB_THUMBTRACK:
4587     case SB_THUMBPOSITION:
4588         newFirstVisible = TREEVIEW_GetListItem(infoPtr,
4589                                                infoPtr->root->firstChild,
4590                                                (LONG)(SHORT)HIWORD(wParam));
4591         break;
4592
4593     case SB_ENDSCROLL:
4594         return 0;
4595     }
4596
4597     if (newFirstVisible != NULL)
4598     {
4599         if (newFirstVisible != oldFirstVisible)
4600             TREEVIEW_SetFirstVisible(infoPtr, newFirstVisible,
4601                                   nScrollCode != SB_THUMBTRACK);
4602         else if (nScrollCode == SB_THUMBPOSITION)
4603             SetScrollPos(infoPtr->hwnd, SB_VERT,
4604                          newFirstVisible->visibleOrder, TRUE);
4605     }
4606
4607     return 0;
4608 }
4609
4610 static LRESULT
4611 TREEVIEW_HScroll(TREEVIEW_INFO *infoPtr, WPARAM wParam)
4612 {
4613     int maxWidth;
4614     int scrollX = infoPtr->scrollX;
4615     int nScrollCode = LOWORD(wParam);
4616
4617     TRACE("wp %x\n", wParam);
4618
4619     if (!(infoPtr->uInternalStatus & TV_HSCROLL))
4620         return FALSE;
4621
4622     if (infoPtr->hwndEdit)
4623         SetFocus(infoPtr->hwnd);
4624
4625     maxWidth = infoPtr->treeWidth - infoPtr->clientWidth;
4626     /* shall never occur */
4627     if (maxWidth <= 0)
4628     {
4629        scrollX = 0;
4630        goto scroll;
4631     }
4632
4633     switch (nScrollCode)
4634     {
4635     case SB_LINELEFT:
4636         scrollX -= infoPtr->uItemHeight;
4637         break;
4638     case SB_LINERIGHT:
4639         scrollX += infoPtr->uItemHeight;
4640         break;
4641     case SB_PAGELEFT:
4642         scrollX -= infoPtr->clientWidth;
4643         break;
4644     case SB_PAGERIGHT:
4645         scrollX += infoPtr->clientWidth;
4646         break;
4647
4648     case SB_THUMBTRACK:
4649     case SB_THUMBPOSITION:
4650         scrollX = (int)(SHORT)HIWORD(wParam);
4651         break;
4652
4653     case SB_ENDSCROLL:
4654        return 0;
4655     }
4656
4657     if (scrollX > maxWidth)
4658         scrollX = maxWidth;
4659     else if (scrollX < 0)
4660         scrollX = 0;
4661
4662 scroll:
4663     if (scrollX != infoPtr->scrollX)
4664     {
4665         TREEVIEW_ITEM *item;
4666         LONG scroll_pixels = infoPtr->scrollX - scrollX;
4667
4668         for (item = infoPtr->root->firstChild; item != NULL;
4669              item = TREEVIEW_GetNextListItem(infoPtr, item))
4670         {
4671            item->linesOffset += scroll_pixels;
4672            item->stateOffset += scroll_pixels;
4673            item->imageOffset += scroll_pixels;
4674            item->textOffset  += scroll_pixels;
4675         }
4676
4677         ScrollWindow(infoPtr->hwnd, scroll_pixels, 0, NULL, NULL);
4678         infoPtr->scrollX = scrollX;
4679         UpdateWindow(infoPtr->hwnd);
4680     }
4681
4682     if (nScrollCode != SB_THUMBTRACK)
4683        SetScrollPos(infoPtr->hwnd, SB_HORZ, scrollX, TRUE);
4684
4685     return 0;
4686 }
4687
4688 static LRESULT
4689 TREEVIEW_MouseWheel(TREEVIEW_INFO *infoPtr, WPARAM wParam)
4690 {
4691     short gcWheelDelta;
4692     UINT pulScrollLines = 3;
4693
4694     if (infoPtr->firstVisible == NULL)
4695         return TRUE;
4696
4697     SystemParametersInfoW(SPI_GETWHEELSCROLLLINES, 0, &pulScrollLines, 0);
4698
4699     gcWheelDelta = -(short)HIWORD(wParam);
4700     pulScrollLines *= (gcWheelDelta / WHEEL_DELTA);
4701
4702     if (abs(gcWheelDelta) >= WHEEL_DELTA && pulScrollLines)
4703     {
4704         int newDy = infoPtr->firstVisible->visibleOrder + pulScrollLines;
4705         int maxDy = infoPtr->maxVisibleOrder;
4706
4707         if (newDy > maxDy)
4708             newDy = maxDy;
4709
4710         if (newDy < 0)
4711             newDy = 0;
4712
4713         TREEVIEW_VScroll(infoPtr, MAKEWPARAM(SB_THUMBPOSITION, newDy));
4714     }
4715     return TRUE;
4716 }
4717
4718 /* Create/Destroy *******************************************************/
4719
4720 static LRESULT
4721 TREEVIEW_Create(HWND hwnd)
4722 {
4723     RECT rcClient;
4724     TREEVIEW_INFO *infoPtr;
4725
4726     TRACE("wnd %p, style %lx\n", hwnd, GetWindowLongA(hwnd, GWL_STYLE));
4727
4728     infoPtr = (TREEVIEW_INFO *)Alloc(sizeof(TREEVIEW_INFO));
4729
4730     if (infoPtr == NULL)
4731     {
4732         ERR("could not allocate info memory!\n");
4733         return 0;
4734     }
4735
4736     SetWindowLongA(hwnd, 0, (DWORD)infoPtr);
4737
4738     infoPtr->hwnd = hwnd;
4739     infoPtr->dwStyle = GetWindowLongA(hwnd, GWL_STYLE);
4740     infoPtr->uInternalStatus = 0;
4741     infoPtr->Timer = 0;
4742     infoPtr->uNumItems = 0;
4743     infoPtr->cdmode = 0;
4744     infoPtr->uScrollTime = 300; /* milliseconds */
4745     infoPtr->bRedraw = TRUE;
4746
4747     GetClientRect(hwnd, &rcClient);
4748
4749     /* No scroll bars yet. */
4750     infoPtr->clientWidth = rcClient.right;
4751     infoPtr->clientHeight = rcClient.bottom;
4752
4753     infoPtr->treeWidth = 0;
4754     infoPtr->treeHeight = 0;
4755
4756     infoPtr->uIndent = 19;
4757     infoPtr->selectedItem = 0;
4758     infoPtr->focusedItem = 0;
4759     /* hotItem? */
4760     infoPtr->firstVisible = 0;
4761     infoPtr->maxVisibleOrder = 0;
4762     infoPtr->dropItem = 0;
4763     infoPtr->insertMarkItem = 0;
4764     infoPtr->insertBeforeorAfter = 0;
4765     /* dragList */
4766
4767     infoPtr->scrollX = 0;
4768
4769     infoPtr->clrBk = GetSysColor(COLOR_WINDOW);
4770     infoPtr->clrText = -1;      /* use system color */
4771     infoPtr->clrLine = RGB(128, 128, 128);
4772     infoPtr->clrInsertMark = GetSysColor(COLOR_BTNTEXT);
4773
4774     /* hwndToolTip */
4775
4776     infoPtr->hwndEdit = 0;
4777     infoPtr->wpEditOrig = NULL;
4778     infoPtr->bIgnoreEditKillFocus = FALSE;
4779     infoPtr->bLabelChanged = FALSE;
4780
4781     infoPtr->himlNormal = NULL;
4782     infoPtr->himlState = NULL;
4783     infoPtr->normalImageWidth = 0;
4784     infoPtr->normalImageHeight = 0;
4785     infoPtr->stateImageWidth = 0;
4786     infoPtr->stateImageHeight = 0;
4787
4788     infoPtr->items = DPA_Create(16);
4789
4790     infoPtr->hFont = GetStockObject(DEFAULT_GUI_FONT);
4791     infoPtr->hBoldFont = TREEVIEW_CreateBoldFont(infoPtr->hFont);
4792
4793     infoPtr->uItemHeight = TREEVIEW_NaturalHeight(infoPtr);
4794
4795     infoPtr->root = TREEVIEW_AllocateItem(infoPtr);
4796     infoPtr->root->state = TVIS_EXPANDED;
4797     infoPtr->root->iLevel = -1;
4798     infoPtr->root->visibleOrder = -1;
4799
4800     infoPtr->hwndNotify = GetParent(hwnd);
4801 #if 0
4802     infoPtr->bTransparent = ( GetWindowLongA( hwnd, GWL_STYLE) & TBSTYLE_FLAT);
4803 #endif
4804
4805     infoPtr->hwndToolTip = 0;
4806
4807     infoPtr->bUnicode = IsWindowUnicode (hwnd);
4808
4809     /* Determine what type of notify should be issued */
4810     /* sets infoPtr->bNtfUnicode */
4811     TREEVIEW_NotifyFormat(infoPtr, infoPtr->hwndNotify, NF_REQUERY);
4812
4813     if (!(infoPtr->dwStyle & TVS_NOTOOLTIPS))
4814         infoPtr->hwndToolTip = COMCTL32_CreateToolTip(hwnd);
4815
4816     if (infoPtr->dwStyle & TVS_CHECKBOXES)
4817     {
4818         RECT rc;
4819         HBITMAP hbm, hbmOld;
4820         HDC hdc,hdcScreen;
4821         int nIndex;
4822
4823         infoPtr->himlState =
4824             ImageList_Create(16, 16, ILC_COLOR | ILC_MASK, 3, 0);
4825
4826         hdcScreen = CreateDCA("DISPLAY", NULL, NULL, NULL);
4827
4828         /* Create a coloured bitmap compatible with the screen depth
4829            because checkboxes are not black&white */
4830         hdc = CreateCompatibleDC(hdcScreen);
4831         hbm = CreateCompatibleBitmap(hdcScreen, 48, 16);
4832         hbmOld = SelectObject(hdc, hbm);
4833
4834         rc.left  = 0;   rc.top    = 0;
4835         rc.right = 48;  rc.bottom = 16;
4836         FillRect(hdc, &rc, (HBRUSH)(COLOR_WINDOW+1));
4837
4838         rc.left  = 18;   rc.top    = 2;
4839         rc.right = 30;   rc.bottom = 14;
4840         DrawFrameControl(hdc, &rc, DFC_BUTTON,
4841                           DFCS_BUTTONCHECK|DFCS_FLAT);
4842
4843         rc.left  = 34;   rc.right  = 46;
4844         DrawFrameControl(hdc, &rc, DFC_BUTTON,
4845                           DFCS_BUTTONCHECK|DFCS_FLAT|DFCS_CHECKED);
4846
4847         SelectObject(hdc, hbmOld);
4848         nIndex = ImageList_AddMasked(infoPtr->himlState, hbm,
4849                                       GetSysColor(COLOR_WINDOW));
4850         TRACE("checkbox index %d\n", nIndex);
4851
4852         DeleteObject(hbm);
4853         DeleteDC(hdc);
4854         DeleteDC(hdcScreen);
4855
4856         infoPtr->stateImageWidth = 16;
4857         infoPtr->stateImageHeight = 16;
4858     }
4859     return 0;
4860 }
4861
4862
4863 static LRESULT
4864 TREEVIEW_Destroy(TREEVIEW_INFO *infoPtr)
4865 {
4866     TRACE("\n");
4867
4868     TREEVIEW_RemoveTree(infoPtr);
4869
4870     /* tool tip is automatically destroyed: we are its owner */
4871
4872     /* Restore original wndproc */
4873     if (infoPtr->hwndEdit)
4874         SetWindowLongA(infoPtr->hwndEdit, GWL_WNDPROC,
4875                        (LONG)infoPtr->wpEditOrig);
4876
4877     /* Deassociate treeview from the window before doing anything drastic. */
4878     SetWindowLongA(infoPtr->hwnd, 0, (LONG)NULL);
4879
4880     DeleteObject(infoPtr->hBoldFont);
4881     Free(infoPtr);
4882
4883     return 0;
4884 }
4885
4886 /* Miscellaneous Messages ***********************************************/
4887
4888 static LRESULT
4889 TREEVIEW_ScrollKeyDown(TREEVIEW_INFO *infoPtr, WPARAM key)
4890 {
4891     static const struct
4892     {
4893         unsigned char code;
4894     }
4895     scroll[] =
4896     {
4897 #define SCROLL_ENTRY(dir, code) { ((dir) << 7) | (code) }
4898         SCROLL_ENTRY(SB_VERT, SB_PAGEUP),       /* VK_PRIOR */
4899         SCROLL_ENTRY(SB_VERT, SB_PAGEDOWN),     /* VK_NEXT */
4900         SCROLL_ENTRY(SB_VERT, SB_BOTTOM),       /* VK_END */
4901         SCROLL_ENTRY(SB_VERT, SB_TOP),          /* VK_HOME */
4902         SCROLL_ENTRY(SB_HORZ, SB_LINEUP),       /* VK_LEFT */
4903         SCROLL_ENTRY(SB_VERT, SB_LINEUP),       /* VK_UP */
4904         SCROLL_ENTRY(SB_HORZ, SB_LINEDOWN),     /* VK_RIGHT */
4905         SCROLL_ENTRY(SB_VERT, SB_LINEDOWN)      /* VK_DOWN */
4906 #undef SCROLL_ENTRY
4907     };
4908
4909     if (key >= VK_PRIOR && key <= VK_DOWN)
4910     {
4911         unsigned char code = scroll[key - VK_PRIOR].code;
4912
4913         (((code & (1 << 7)) == (SB_HORZ << 7))
4914          ? TREEVIEW_HScroll
4915          : TREEVIEW_VScroll)(infoPtr, code & 0x7F);
4916     }
4917
4918     return 0;
4919 }
4920
4921 /************************************************************************
4922  *        TREEVIEW_KeyDown
4923  *
4924  * VK_UP       Move selection to the previous non-hidden item.
4925  * VK_DOWN     Move selection to the next non-hidden item.
4926  * VK_HOME     Move selection to the first item.
4927  * VK_END      Move selection to the last item.
4928  * VK_LEFT     If expanded then collapse, otherwise move to parent.
4929  * VK_RIGHT    If collapsed then expand, otherwise move to first child.
4930  * VK_ADD      Expand.
4931  * VK_SUBTRACT Collapse.
4932  * VK_MULTIPLY Expand all.
4933  * VK_PRIOR    Move up GetVisibleCount items.
4934  * VK_NEXT     Move down GetVisibleCount items.
4935  * VK_BACK     Move to parent.
4936  * CTRL-Left,Right,Up,Down,PgUp,PgDown,Home,End: Scroll without changing selection
4937  */
4938 static LRESULT
4939 TREEVIEW_KeyDown(TREEVIEW_INFO *infoPtr, WPARAM wParam)
4940 {
4941     /* If it is non-NULL and different, it will be selected and visible. */
4942     TREEVIEW_ITEM *newSelection = NULL;
4943
4944     TREEVIEW_ITEM *prevItem = infoPtr->selectedItem;
4945
4946     TRACE("%x\n", wParam);
4947
4948     if (prevItem == NULL)
4949         return FALSE;
4950
4951     if (GetAsyncKeyState(VK_CONTROL) & 0x8000)
4952         return TREEVIEW_ScrollKeyDown(infoPtr, wParam);
4953
4954     switch (wParam)
4955     {
4956     case VK_UP:
4957         newSelection = TREEVIEW_GetPrevListItem(infoPtr, prevItem);
4958         if (!newSelection)
4959             newSelection = infoPtr->root->firstChild;
4960         break;
4961
4962     case VK_DOWN:
4963         newSelection = TREEVIEW_GetNextListItem(infoPtr, prevItem);
4964         break;
4965
4966     case VK_HOME:
4967         newSelection = infoPtr->root->firstChild;
4968         break;
4969
4970     case VK_END:
4971         newSelection = TREEVIEW_GetLastListItem(infoPtr, infoPtr->root);
4972         break;
4973
4974     case VK_LEFT:
4975         if (prevItem->state & TVIS_EXPANDED)
4976         {
4977             TREEVIEW_Collapse(infoPtr, prevItem, FALSE, TRUE);
4978         }
4979         else if (prevItem->parent != infoPtr->root)
4980         {
4981             newSelection = prevItem->parent;
4982         }
4983         break;
4984
4985     case VK_RIGHT:
4986         if (TREEVIEW_HasChildren(infoPtr, prevItem))
4987         {
4988             if (!(prevItem->state & TVIS_EXPANDED))
4989                 TREEVIEW_Expand(infoPtr, prevItem, FALSE, TRUE);
4990             else
4991             {
4992                 newSelection = prevItem->firstChild;
4993             }
4994         }
4995
4996         break;
4997
4998     case VK_MULTIPLY:
4999         TREEVIEW_ExpandAll(infoPtr, prevItem);
5000         break;
5001
5002     case VK_ADD:
5003         if (!(prevItem->state & TVIS_EXPANDED))
5004             TREEVIEW_Expand(infoPtr, prevItem, FALSE, TRUE);
5005         break;
5006
5007     case VK_SUBTRACT:
5008         if (prevItem->state & TVIS_EXPANDED)
5009             TREEVIEW_Collapse(infoPtr, prevItem, FALSE, TRUE);
5010         break;
5011
5012     case VK_PRIOR:
5013         newSelection
5014             = TREEVIEW_GetListItem(infoPtr, prevItem,
5015                                    -TREEVIEW_GetVisibleCount(infoPtr));
5016         break;
5017
5018     case VK_NEXT:
5019         newSelection
5020             = TREEVIEW_GetListItem(infoPtr, prevItem,
5021                                    TREEVIEW_GetVisibleCount(infoPtr));
5022         break;
5023
5024     case VK_BACK:
5025         newSelection = prevItem->parent;
5026         if (newSelection == infoPtr->root)
5027             newSelection = NULL;
5028         break;
5029
5030     case VK_SPACE:
5031         if (infoPtr->dwStyle & TVS_CHECKBOXES)
5032             TREEVIEW_ToggleItemState(infoPtr, prevItem);
5033         break;
5034     }
5035
5036     if (newSelection && newSelection != prevItem)
5037     {
5038         if (TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, newSelection,
5039                                   TVC_BYKEYBOARD))
5040         {
5041             TREEVIEW_EnsureVisible(infoPtr, newSelection, FALSE);
5042         }
5043     }
5044
5045     return FALSE;
5046 }
5047
5048 static LRESULT
5049 TREEVIEW_Notify(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
5050 {
5051     LPNMHDR lpnmh = (LPNMHDR)lParam;
5052
5053     if (lpnmh->code == PGN_CALCSIZE) {
5054         LPNMPGCALCSIZE lppgc = (LPNMPGCALCSIZE)lParam;
5055
5056         if (lppgc->dwFlag == PGF_CALCWIDTH) {
5057             lppgc->iWidth = infoPtr->treeWidth;
5058             TRACE("got PGN_CALCSIZE, returning horz size = %ld, client=%ld\n",
5059                   infoPtr->treeWidth, infoPtr->clientWidth);
5060         }
5061         else {
5062             lppgc->iHeight = infoPtr->treeHeight;
5063             TRACE("got PGN_CALCSIZE, returning vert size = %ld, client=%ld\n",
5064                   infoPtr->treeHeight, infoPtr->clientHeight);
5065         }
5066         return 0;
5067     }
5068     return DefWindowProcA(infoPtr->hwnd, WM_NOTIFY, wParam, lParam);
5069 }
5070
5071 static INT TREEVIEW_NotifyFormat (TREEVIEW_INFO *infoPtr, HWND hwndFrom, UINT nCommand)
5072 {
5073     INT format;
5074
5075     TRACE("(hwndFrom=%p, nCommand=%d)\n", hwndFrom, nCommand);
5076
5077     if (nCommand != NF_REQUERY) return 0;
5078
5079     format = SendMessageW(hwndFrom, WM_NOTIFYFORMAT, (WPARAM)infoPtr->hwnd, NF_QUERY);
5080     TRACE("format=%d\n", format);
5081
5082     if (format != NFR_ANSI && format != NFR_UNICODE) return 0;
5083
5084     infoPtr->bNtfUnicode = (format == NFR_UNICODE);
5085
5086     return format;
5087 }
5088
5089 static LRESULT
5090 TREEVIEW_Size(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
5091 {
5092     if (wParam == SIZE_RESTORED)
5093     {
5094         infoPtr->clientWidth  = (short)LOWORD(lParam);
5095         infoPtr->clientHeight = (short)HIWORD(lParam);
5096
5097         TREEVIEW_RecalculateVisibleOrder(infoPtr, NULL);
5098         TREEVIEW_SetFirstVisible(infoPtr, infoPtr->firstVisible, TRUE);
5099         TREEVIEW_UpdateScrollBars(infoPtr);
5100     }
5101     else
5102     {
5103         FIXME("WM_SIZE flag %x %lx not handled\n", wParam, lParam);
5104     }
5105
5106     TREEVIEW_Invalidate(infoPtr, NULL);
5107     return 0;
5108 }
5109
5110 static LRESULT
5111 TREEVIEW_StyleChanged(TREEVIEW_INFO *infoPtr, WPARAM wParam, LPARAM lParam)
5112 {
5113     TRACE("(%x %lx)\n", wParam, lParam);
5114
5115     if (wParam == GWL_STYLE)
5116     {
5117        DWORD dwNewStyle = ((LPSTYLESTRUCT)lParam)->styleNew;
5118
5119        /* we have to take special care about tooltips */
5120        if ((infoPtr->dwStyle ^ dwNewStyle) & TVS_NOTOOLTIPS)
5121        {
5122           if (infoPtr->dwStyle & TVS_NOTOOLTIPS)
5123           {
5124               infoPtr->hwndToolTip = COMCTL32_CreateToolTip(infoPtr->hwnd);
5125               TRACE("\n");
5126           }
5127           else
5128           {
5129              DestroyWindow(infoPtr->hwndToolTip);
5130              infoPtr->hwndToolTip = 0;
5131           }
5132        }
5133
5134        infoPtr->dwStyle = dwNewStyle;
5135     }
5136
5137     TREEVIEW_UpdateSubTree(infoPtr, infoPtr->root);
5138     TREEVIEW_UpdateScrollBars(infoPtr);
5139     TREEVIEW_Invalidate(infoPtr, NULL);
5140
5141     return 0;
5142 }
5143
5144 static LRESULT
5145 TREEVIEW_SetFocus(TREEVIEW_INFO *infoPtr)
5146 {
5147     TRACE("\n");
5148
5149     if (!infoPtr->selectedItem)
5150     {
5151         TREEVIEW_DoSelectItem(infoPtr, TVGN_CARET, infoPtr->firstVisible,
5152                               TVC_UNKNOWN);
5153     }
5154
5155     TREEVIEW_SendSimpleNotify(infoPtr, NM_SETFOCUS);
5156     TREEVIEW_Invalidate(infoPtr, infoPtr->selectedItem);
5157     return 0;
5158 }
5159
5160 static LRESULT
5161 TREEVIEW_KillFocus(TREEVIEW_INFO *infoPtr)
5162 {
5163     TRACE("\n");
5164
5165     TREEVIEW_SendSimpleNotify(infoPtr, NM_KILLFOCUS);
5166     TREEVIEW_Invalidate(infoPtr, infoPtr->selectedItem);
5167     return 0;
5168 }
5169
5170
5171 static LRESULT WINAPI
5172 TREEVIEW_WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
5173 {
5174     TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
5175
5176     TRACE("hwnd %p msg %04x wp=%08x lp=%08lx\n", hwnd, uMsg, wParam, lParam);
5177
5178     if (infoPtr) TREEVIEW_VerifyTree(infoPtr);
5179     else
5180     {
5181         if (uMsg == WM_CREATE)
5182             TREEVIEW_Create(hwnd);
5183         else
5184             goto def;
5185     }
5186
5187     switch (uMsg)
5188     {
5189     case TVM_CREATEDRAGIMAGE:
5190         return TREEVIEW_CreateDragImage(infoPtr, wParam, lParam);
5191
5192     case TVM_DELETEITEM:
5193         return TREEVIEW_DeleteItem(infoPtr, (HTREEITEM)lParam);
5194
5195     case TVM_EDITLABELA:
5196         return (LRESULT)TREEVIEW_EditLabelA(infoPtr, (HTREEITEM)lParam);
5197
5198     case TVM_EDITLABELW:
5199         FIXME("Unimplemented msg TVM_EDITLABELW\n");
5200         return 0;
5201
5202     case TVM_ENDEDITLABELNOW:
5203         return TREEVIEW_EndEditLabelNow(infoPtr, (BOOL)wParam);
5204
5205     case TVM_ENSUREVISIBLE:
5206         return TREEVIEW_EnsureVisible(infoPtr, (HTREEITEM)lParam, TRUE);
5207
5208     case TVM_EXPAND:
5209         return TREEVIEW_ExpandMsg(infoPtr, (UINT)wParam, (HTREEITEM)lParam);
5210
5211     case TVM_GETBKCOLOR:
5212         return TREEVIEW_GetBkColor(infoPtr);
5213
5214     case TVM_GETCOUNT:
5215         return TREEVIEW_GetCount(infoPtr);
5216
5217     case TVM_GETEDITCONTROL:
5218         return TREEVIEW_GetEditControl(infoPtr);
5219
5220     case TVM_GETIMAGELIST:
5221         return TREEVIEW_GetImageList(infoPtr, wParam);
5222
5223     case TVM_GETINDENT:
5224         return TREEVIEW_GetIndent(infoPtr);
5225
5226     case TVM_GETINSERTMARKCOLOR:
5227         return TREEVIEW_GetInsertMarkColor(infoPtr);
5228
5229     case TVM_GETISEARCHSTRINGA:
5230         FIXME("Unimplemented msg TVM_GETISEARCHSTRINGA\n");
5231         return 0;
5232
5233     case TVM_GETISEARCHSTRINGW:
5234         FIXME("Unimplemented msg TVM_GETISEARCHSTRINGW\n");
5235         return 0;
5236
5237     case TVM_GETITEMA:
5238         return TREEVIEW_GetItemA(infoPtr, (LPTVITEMEXA)lParam);
5239
5240     case TVM_GETITEMW:
5241         return TREEVIEW_GetItemW(infoPtr, (LPTVITEMEXW)lParam);
5242
5243     case TVM_GETITEMHEIGHT:
5244         return TREEVIEW_GetItemHeight(infoPtr);
5245
5246     case TVM_GETITEMRECT:
5247         return TREEVIEW_GetItemRect(infoPtr, (BOOL)wParam, (LPRECT)lParam);
5248
5249     case TVM_GETITEMSTATE:
5250         return TREEVIEW_GetItemState(infoPtr, (HTREEITEM)wParam, (UINT)lParam);
5251
5252     case TVM_GETLINECOLOR:
5253         return TREEVIEW_GetLineColor(infoPtr);
5254
5255     case TVM_GETNEXTITEM:
5256         return TREEVIEW_GetNextItem(infoPtr, (UINT)wParam, (HTREEITEM)lParam);
5257
5258     case TVM_GETSCROLLTIME:
5259         return TREEVIEW_GetScrollTime(infoPtr);
5260
5261     case TVM_GETTEXTCOLOR:
5262         return TREEVIEW_GetTextColor(infoPtr);
5263
5264     case TVM_GETTOOLTIPS:
5265         return TREEVIEW_GetToolTips(infoPtr);
5266
5267     case TVM_GETUNICODEFORMAT:
5268         FIXME("Unimplemented msg TVM_GETUNICODEFORMAT\n");
5269         return 0;
5270
5271     case TVM_GETVISIBLECOUNT:
5272         return TREEVIEW_GetVisibleCount(infoPtr);
5273
5274     case TVM_HITTEST:
5275         return TREEVIEW_HitTest(infoPtr, (LPTVHITTESTINFO)lParam);
5276
5277     case TVM_INSERTITEMA:
5278         return TREEVIEW_InsertItemA(infoPtr, lParam);
5279
5280     case TVM_INSERTITEMW:
5281         return TREEVIEW_InsertItemW(infoPtr, lParam);
5282
5283     case TVM_SELECTITEM:
5284         return TREEVIEW_SelectItem(infoPtr, (INT)wParam, (HTREEITEM)lParam);
5285
5286     case TVM_SETBKCOLOR:
5287         return TREEVIEW_SetBkColor(infoPtr, (COLORREF)lParam);
5288
5289     case TVM_SETIMAGELIST:
5290         return TREEVIEW_SetImageList(infoPtr, wParam, (HIMAGELIST)lParam);
5291
5292     case TVM_SETINDENT:
5293         return TREEVIEW_SetIndent(infoPtr, (UINT)wParam);
5294
5295     case TVM_SETINSERTMARK:
5296         return TREEVIEW_SetInsertMark(infoPtr, (BOOL)wParam, (HTREEITEM)lParam);
5297
5298     case TVM_SETINSERTMARKCOLOR:
5299         return TREEVIEW_SetInsertMarkColor(infoPtr, (COLORREF)lParam);
5300
5301     case TVM_SETITEMA:
5302         return TREEVIEW_SetItemA(infoPtr, (LPTVITEMEXA)lParam);
5303
5304     case TVM_SETITEMW:
5305     return TREEVIEW_SetItemW(infoPtr, (LPTVITEMEXW)lParam);
5306         return 0;
5307
5308     case TVM_SETLINECOLOR:
5309         return TREEVIEW_SetLineColor(infoPtr, (COLORREF)lParam);
5310
5311     case TVM_SETITEMHEIGHT:
5312         return TREEVIEW_SetItemHeight(infoPtr, (INT)(SHORT)wParam);
5313
5314     case TVM_SETSCROLLTIME:
5315         return TREEVIEW_SetScrollTime(infoPtr, (UINT)wParam);
5316
5317     case TVM_SETTEXTCOLOR:
5318         return TREEVIEW_SetTextColor(infoPtr, (COLORREF)lParam);
5319
5320     case TVM_SETTOOLTIPS:
5321         return TREEVIEW_SetToolTips(infoPtr, (HWND)wParam);
5322
5323     case TVM_SETUNICODEFORMAT:
5324         FIXME("Unimplemented msg TVM_SETUNICODEFORMAT\n");
5325         return 0;
5326
5327     case TVM_SORTCHILDREN:
5328         return TREEVIEW_SortChildren(infoPtr, wParam, lParam);
5329
5330     case TVM_SORTCHILDRENCB:
5331         return TREEVIEW_SortChildrenCB(infoPtr, wParam, (LPTVSORTCB)lParam);
5332
5333     case WM_CHAR:
5334         return TREEVIEW_ProcessLetterKeys( hwnd, wParam, lParam );
5335
5336     case WM_COMMAND:
5337         return TREEVIEW_Command(infoPtr, wParam, lParam);
5338
5339     case WM_DESTROY:
5340         return TREEVIEW_Destroy(infoPtr);
5341
5342         /* WM_ENABLE */
5343
5344     case WM_ERASEBKGND:
5345         return TREEVIEW_EraseBackground(infoPtr, (HDC)wParam);
5346
5347     case WM_GETDLGCODE:
5348         return DLGC_WANTARROWS | DLGC_WANTCHARS;
5349
5350     case WM_GETFONT:
5351         return TREEVIEW_GetFont(infoPtr);
5352
5353     case WM_HSCROLL:
5354         return TREEVIEW_HScroll(infoPtr, wParam);
5355
5356     case WM_KEYDOWN:
5357         return TREEVIEW_KeyDown(infoPtr, wParam);
5358
5359     case WM_KILLFOCUS:
5360         return TREEVIEW_KillFocus(infoPtr);
5361
5362     case WM_LBUTTONDBLCLK:
5363         return TREEVIEW_LButtonDoubleClick(infoPtr, lParam);
5364
5365     case WM_LBUTTONDOWN:
5366         return TREEVIEW_LButtonDown(infoPtr, lParam);
5367
5368         /* WM_MBUTTONDOWN */
5369
5370         /* WM_MOUSEMOVE */
5371
5372     case WM_NOTIFY:
5373         return TREEVIEW_Notify(infoPtr, wParam, lParam);
5374
5375     case WM_NOTIFYFORMAT:
5376         return TREEVIEW_NotifyFormat(infoPtr, (HWND)wParam, (UINT)lParam);
5377
5378     case WM_PAINT:
5379         return TREEVIEW_Paint(infoPtr, wParam);
5380
5381         /* WM_PRINTCLIENT */
5382
5383     case WM_RBUTTONDOWN:
5384         return TREEVIEW_RButtonDown(infoPtr, lParam);
5385
5386     case WM_SETFOCUS:
5387         return TREEVIEW_SetFocus(infoPtr);
5388
5389     case WM_SETFONT:
5390         return TREEVIEW_SetFont(infoPtr, (HFONT)wParam, (BOOL)lParam);
5391
5392     case WM_SETREDRAW:
5393         return TREEVIEW_SetRedraw(infoPtr, wParam, lParam);
5394
5395     case WM_SIZE:
5396         return TREEVIEW_Size(infoPtr, wParam, lParam);
5397
5398     case WM_STYLECHANGED:
5399         return TREEVIEW_StyleChanged(infoPtr, wParam, lParam);
5400
5401         /* WM_SYSCOLORCHANGE */
5402
5403         /* WM_SYSKEYDOWN */
5404
5405     case WM_TIMER:
5406         return TREEVIEW_HandleTimer(infoPtr, wParam);
5407
5408     case WM_VSCROLL:
5409         return TREEVIEW_VScroll(infoPtr, wParam);
5410
5411         /* WM_WININICHANGE */
5412
5413     case WM_MOUSEWHEEL:
5414         if (wParam & (MK_SHIFT | MK_CONTROL))
5415             goto def;
5416         return TREEVIEW_MouseWheel(infoPtr, wParam);
5417
5418     case WM_DRAWITEM:
5419         TRACE("drawItem\n");
5420         goto def;
5421
5422     default:
5423         /* This mostly catches MFC and Delphi messages. :( */
5424         if ((uMsg >= WM_USER) && (uMsg < WM_APP))
5425             TRACE("Unknown msg %04x wp=%08x lp=%08lx\n", uMsg, wParam, lParam);
5426 def:
5427         return DefWindowProcA(hwnd, uMsg, wParam, lParam);
5428     }
5429     return 0;
5430 }
5431
5432
5433 /* Class Registration ***************************************************/
5434
5435 VOID
5436 TREEVIEW_Register(void)
5437 {
5438     WNDCLASSA wndClass;
5439
5440     TRACE("\n");
5441
5442     ZeroMemory(&wndClass, sizeof(WNDCLASSA));
5443     wndClass.style = CS_GLOBALCLASS | CS_DBLCLKS;
5444     wndClass.lpfnWndProc = (WNDPROC)TREEVIEW_WindowProc;
5445     wndClass.cbClsExtra = 0;
5446     wndClass.cbWndExtra = sizeof(TREEVIEW_INFO *);
5447
5448     wndClass.hCursor = LoadCursorA(0, (LPSTR)IDC_ARROW);
5449     wndClass.hbrBackground = 0;
5450     wndClass.lpszClassName = WC_TREEVIEWA;
5451
5452     RegisterClassA(&wndClass);
5453 }
5454
5455
5456 VOID
5457 TREEVIEW_Unregister(void)
5458 {
5459     UnregisterClassA(WC_TREEVIEWA, NULL);
5460 }
5461
5462
5463 /* Tree Verification ****************************************************/
5464
5465 #ifdef NDEBUG
5466 static inline void
5467 TREEVIEW_VerifyChildren(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item);
5468
5469 static inline void TREEVIEW_VerifyItemCommon(TREEVIEW_INFO *infoPtr,
5470                                              TREEVIEW_ITEM *item)
5471 {
5472     assert(infoPtr != NULL);
5473     assert(item != NULL);
5474
5475     /* both NULL, or both non-null */
5476     assert((item->firstChild == NULL) == (item->lastChild == NULL));
5477
5478     assert(item->firstChild != item);
5479     assert(item->lastChild != item);
5480
5481     if (item->firstChild)
5482     {
5483         assert(item->firstChild->parent == item);
5484         assert(item->firstChild->prevSibling == NULL);
5485     }
5486
5487     if (item->lastChild)
5488     {
5489         assert(item->lastChild->parent == item);
5490         assert(item->lastChild->nextSibling == NULL);
5491     }
5492
5493     assert(item->nextSibling != item);
5494     if (item->nextSibling)
5495     {
5496         assert(item->nextSibling->parent == item->parent);
5497         assert(item->nextSibling->prevSibling == item);
5498     }
5499
5500     assert(item->prevSibling != item);
5501     if (item->prevSibling)
5502     {
5503         assert(item->prevSibling->parent == item->parent);
5504         assert(item->prevSibling->nextSibling == item);
5505     }
5506 }
5507
5508 static inline void
5509 TREEVIEW_VerifyItem(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
5510 {
5511     assert(item != NULL);
5512
5513     assert(item->parent != NULL);
5514     assert(item->parent != item);
5515     assert(item->iLevel == item->parent->iLevel + 1);
5516
5517     assert(DPA_GetPtrIndex(infoPtr->items, item) != -1);
5518
5519     TREEVIEW_VerifyItemCommon(infoPtr, item);
5520
5521     TREEVIEW_VerifyChildren(infoPtr, item);
5522 }
5523
5524 static inline void
5525 TREEVIEW_VerifyChildren(TREEVIEW_INFO *infoPtr, TREEVIEW_ITEM *item)
5526 {
5527     TREEVIEW_ITEM *child;
5528     assert(item != NULL);
5529
5530     for (child = item->firstChild; child != NULL; child = child->nextSibling)
5531         TREEVIEW_VerifyItem(infoPtr, child);
5532 }
5533
5534 static inline void
5535 TREEVIEW_VerifyRoot(TREEVIEW_INFO *infoPtr)
5536 {
5537     TREEVIEW_ITEM *root = infoPtr->root;
5538
5539     assert(root != NULL);
5540     assert(root->iLevel == -1);
5541     assert(root->parent == NULL);
5542     assert(root->prevSibling == NULL);
5543
5544     TREEVIEW_VerifyItemCommon(infoPtr, root);
5545
5546     TREEVIEW_VerifyChildren(infoPtr, root);
5547 }
5548
5549 static void
5550 TREEVIEW_VerifyTree(TREEVIEW_INFO *infoPtr)
5551 {
5552     assert(infoPtr != NULL);
5553
5554     TREEVIEW_VerifyRoot(infoPtr);
5555 }
5556 #endif