git.oblomov.eu Git - wine/blob - dlls/hhctrl.ocx/help.c

   1 /*
   2  * Help Viewer Implementation
   3  *
   4  * Copyright 2005 James Hawkins
   5  * Copyright 2007 Jacek Caban for CodeWeavers
   6  * Copyright 2011 Owen Rudge for CodeWeavers
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22
  23 #include "hhctrl.h"
  24
  25 #include "wingdi.h"
  26 #include "commctrl.h"
  27 #include "wininet.h"
  28
  29 #include "wine/debug.h"
  30
  31 #include "resource.h"
  32
  33 WINE_DEFAULT_DEBUG_CHANNEL(htmlhelp);
  34
  35 static LRESULT Help_OnSize(HWND hWnd);
  36 static void ExpandContract(HHInfo *pHHInfo);
  37
  38 /* Window type defaults */
  39
  40 #define WINTYPE_DEFAULT_X           280
  41 #define WINTYPE_DEFAULT_Y           100
  42 #define WINTYPE_DEFAULT_WIDTH       740
  43 #define WINTYPE_DEFAULT_HEIGHT      640
  44 #define WINTYPE_DEFAULT_NAVWIDTH    250
  45
  46 #define TAB_TOP_PADDING     8
  47 #define TAB_RIGHT_PADDING   4
  48 #define TAB_MARGIN  8
  49 #define EDIT_HEIGHT         20
  50
  51 static const WCHAR szEmpty[] = {0};
  52
  53 struct html_encoded_symbol {
  54     const char *html_code;
  55     char        ansi_symbol;
  56 };
  57
  58 /*
  59  * Table mapping the conversion between HTML encoded symbols and their ANSI code page equivalent.
  60  * Note: Add additional entries in proper alphabetical order (a binary search is used on this table).
  61  */
  62 struct html_encoded_symbol html_encoded_symbols[] =
  63 {
  64     {"AElig",  0xC6},
  65     {"Aacute", 0xC1},
  66     {"Acirc",  0xC2},
  67     {"Agrave", 0xC0},
  68     {"Aring",  0xC5},
  69     {"Atilde", 0xC3},
  70     {"Auml",   0xC4},
  71     {"Ccedil", 0xC7},
  72     {"ETH",    0xD0},
  73     {"Eacute", 0xC9},
  74     {"Ecirc",  0xCA},
  75     {"Egrave", 0xC8},
  76     {"Euml",   0xCB},
  77     {"Iacute", 0xCD},
  78     {"Icirc",  0xCE},
  79     {"Igrave", 0xCC},
  80     {"Iuml",   0xCF},
  81     {"Ntilde", 0xD1},
  82     {"Oacute", 0xD3},
  83     {"Ocirc",  0xD4},
  84     {"Ograve", 0xD2},
  85     {"Oslash", 0xD8},
  86     {"Otilde", 0xD5},
  87     {"Ouml",   0xD6},
  88     {"THORN",  0xDE},
  89     {"Uacute", 0xDA},
  90     {"Ucirc",  0xDB},
  91     {"Ugrave", 0xD9},
  92     {"Uuml",   0xDC},
  93     {"Yacute", 0xDD},
  94     {"aacute", 0xE1},
  95     {"acirc",  0xE2},
  96     {"acute",  0xB4},
  97     {"aelig",  0xE6},
  98     {"agrave", 0xE0},
  99     {"amp",    '&'},
 100     {"aring",  0xE5},
 101     {"atilde", 0xE3},
 102     {"auml",   0xE4},
 103     {"brvbar", 0xA6},
 104     {"ccedil", 0xE7},
 105     {"cedil",  0xB8},
 106     {"cent",   0xA2},
 107     {"copy",   0xA9},
 108     {"curren", 0xA4},
 109     {"deg",    0xB0},
 110     {"divide", 0xF7},
 111     {"eacute", 0xE9},
 112     {"ecirc",  0xEA},
 113     {"egrave", 0xE8},
 114     {"eth",    0xF0},
 115     {"euml",   0xEB},
 116     {"frac12", 0xBD},
 117     {"frac14", 0xBC},
 118     {"frac34", 0xBE},
 119     {"gt",     '>'},
 120     {"iacute", 0xED},
 121     {"icirc",  0xEE},
 122     {"iexcl",  0xA1},
 123     {"igrave", 0xEC},
 124     {"iquest", 0xBF},
 125     {"iuml",   0xEF},
 126     {"laquo",  0xAB},
 127     {"lt",     '<'},
 128     {"macr",   0xAF},
 129     {"micro",  0xB5},
 130     {"middot", 0xB7},
 131     {"nbsp",   ' '},
 132     {"not",    0xAC},
 133     {"ntilde", 0xF1},
 134     {"oacute", 0xF3},
 135     {"ocirc",  0xF4},
 136     {"ograve", 0xF2},
 137     {"ordf",   0xAA},
 138     {"ordm",   0xBA},
 139     {"oslash", 0xF8},
 140     {"otilde", 0xF5},
 141     {"ouml",   0xF6},
 142     {"para",   0xB6},
 143     {"plusmn", 0xB1},
 144     {"pound",  0xA3},
 145     {"quot",   '"'},
 146     {"raquo",  0xBB},
 147     {"reg",    0xAE},
 148     {"sect",   0xA7},
 149     {"shy",    0xAD},
 150     {"sup1",   0xB9},
 151     {"sup2",   0xB2},
 152     {"sup3",   0xB3},
 153     {"szlig",  0xDF},
 154     {"thorn",  0xFE},
 155     {"times",  0xD7},
 156     {"uacute", 0xFA},
 157     {"ucirc",  0xFB},
 158     {"ugrave", 0xF9},
 159     {"uml",    0xA8},
 160     {"uuml",   0xFC},
 161     {"yacute", 0xFD},
 162     {"yen",    0xA5},
 163     {"yuml",   0xFF}
 164 };
 165
 166 /* Loads a string from the resource file */
 167 static LPWSTR HH_LoadString(DWORD dwID)
 168 {
 169     LPWSTR string = NULL;
 170     LPCWSTR stringresource;
 171     int iSize;
 172
 173     iSize = LoadStringW(hhctrl_hinstance, dwID, (LPWSTR)&stringresource, 0);
 174
 175     string = heap_alloc((iSize + 2) * sizeof(WCHAR)); /* some strings (tab text) needs double-null termination */
 176     memcpy(string, stringresource, iSize*sizeof(WCHAR));
 177     string[iSize] = 0;
 178
 179     return string;
 180 }
 181
 182 static HRESULT navigate_url(HHInfo *info, LPCWSTR surl)
 183 {
 184     VARIANT url;
 185     HRESULT hres;
 186
 187     TRACE("%s\n", debugstr_w(surl));
 188
 189     V_VT(&url) = VT_BSTR;
 190     V_BSTR(&url) = SysAllocString(surl);
 191
 192     hres = IWebBrowser2_Navigate2(info->web_browser, &url, 0, 0, 0, 0);
 193
 194     VariantClear(&url);
 195
 196     if(FAILED(hres))
 197         TRACE("Navigation failed: %08x\n", hres);
 198
 199     return hres;
 200 }
 201
 202 BOOL NavigateToUrl(HHInfo *info, LPCWSTR surl)
 203 {
 204     ChmPath chm_path;
 205     BOOL ret;
 206     HRESULT hres;
 207
 208     static const WCHAR url_indicator[] = {':', '/', '/', 0};
 209
 210     TRACE("%s\n", debugstr_w(surl));
 211
 212     if (strstrW(surl, url_indicator)) {
 213         hres = navigate_url(info, surl);
 214         if(SUCCEEDED(hres))
 215             return TRUE;
 216     } /* look up in chm if it doesn't look like a full url */
 217
 218     SetChmPath(&chm_path, info->pCHMInfo->szFile, surl);
 219     ret = NavigateToChm(info, chm_path.chm_file, chm_path.chm_index);
 220
 221     heap_free(chm_path.chm_file);
 222     heap_free(chm_path.chm_index);
 223
 224     return ret;
 225 }
 226
 227 static BOOL AppendFullPathURL(LPCWSTR file, LPWSTR buf, LPCWSTR index)
 228 {
 229     static const WCHAR url_format[] =
 230         {'m','k',':','@','M','S','I','T','S','t','o','r','e',':','%','s',':',':','%','s','%','s',0};
 231     static const WCHAR slash[] = {'/',0};
 232     static const WCHAR empty[] = {0};
 233     WCHAR full_path[MAX_PATH];
 234
 235     TRACE("%s %p %s\n", debugstr_w(file), buf, debugstr_w(index));
 236
 237     if(!GetFullPathNameW(file, sizeof(full_path)/sizeof(full_path[0]), full_path, NULL)) {
 238         WARN("GetFullPathName failed: %u\n", GetLastError());
 239         return FALSE;
 240     }
 241
 242     wsprintfW(buf, url_format, full_path, (!index || index[0] == '/') ? empty : slash, index);
 243     return TRUE;
 244 }
 245
 246 BOOL NavigateToChm(HHInfo *info, LPCWSTR file, LPCWSTR index)
 247 {
 248     WCHAR buf[INTERNET_MAX_URL_LENGTH];
 249     LPWSTR ptr;
 250
 251     TRACE("%p %s %s\n", info, debugstr_w(file), debugstr_w(index));
 252
 253     if ((!info->web_browser) || !AppendFullPathURL(file, buf, index))
 254         return FALSE;
 255
 256     /* FIXME: HACK */
 257     if((ptr = strchrW(buf, '#')))
 258        *ptr = 0;
 259
 260     return SUCCEEDED(navigate_url(info, buf));
 261 }
 262
 263 static void DoSync(HHInfo *info)
 264 {
 265     WCHAR buf[INTERNET_MAX_URL_LENGTH];
 266     HRESULT hres;
 267     DWORD len;
 268     BSTR url;
 269
 270     hres = IWebBrowser2_get_LocationURL(info->web_browser, &url);
 271
 272     if (FAILED(hres))
 273     {
 274         WARN("get_LocationURL failed: %08x\n", hres);
 275         return;
 276     }
 277
 278     /* If we're not currently viewing a page in the active .chm file, abort */
 279     if ((!AppendFullPathURL(info->pszFile, buf, NULL)) || (len = lstrlenW(buf) > lstrlenW(url)))
 280     {
 281         SysFreeString(url);
 282         return;
 283     }
 284
 285     if (lstrcmpiW(buf, url) > 0)
 286     {
 287         static const WCHAR delimW[] = {':',':','/',0};
 288         const WCHAR *index;
 289
 290         index = strstrW(url, delimW);
 291
 292         if (index)
 293             ActivateContentTopic(info->tabs[TAB_CONTENTS].hwnd, index + 3, info->content); /* skip over ::/ */
 294     }
 295
 296     SysFreeString(url);
 297 }
 298
 299 /* Size Bar */
 300
 301 #define SIZEBAR_WIDTH   4
 302
 303 static const WCHAR szSizeBarClass[] = {
 304     'H','H',' ','S','i','z','e','B','a','r',0
 305 };
 306
 307 /* Draw the SizeBar */
 308 static void SB_OnPaint(HWND hWnd)
 309 {
 310     PAINTSTRUCT ps;
 311     HDC hdc;
 312     RECT rc;
 313
 314     hdc = BeginPaint(hWnd, &ps);
 315
 316     GetClientRect(hWnd, &rc);
 317
 318     /* dark frame */
 319     rc.right += 1;
 320     rc.bottom -= 1;
 321     FrameRect(hdc, &rc, GetStockObject(GRAY_BRUSH));
 322
 323     /* white highlight */
 324     SelectObject(hdc, GetStockObject(WHITE_PEN));
 325     MoveToEx(hdc, rc.right, 1, NULL);
 326     LineTo(hdc, 1, 1);
 327     LineTo(hdc, 1, rc.bottom - 1);
 328
 329
 330     MoveToEx(hdc, 0, rc.bottom, NULL);
 331     LineTo(hdc, rc.right, rc.bottom);
 332
 333     EndPaint(hWnd, &ps);
 334 }
 335
 336 static void SB_OnLButtonDown(HWND hWnd, WPARAM wParam, LPARAM lParam)
 337 {
 338     SetCapture(hWnd);
 339 }
 340
 341 static void SB_OnLButtonUp(HWND hWnd, WPARAM wParam, LPARAM lParam)
 342 {
 343     HHInfo *pHHInfo = (HHInfo *)GetWindowLongPtrW(hWnd, 0);
 344     POINT pt;
 345
 346     pt.x = (short)LOWORD(lParam);
 347     pt.y = (short)HIWORD(lParam);
 348
 349     /* update the window sizes */
 350     pHHInfo->WinType.iNavWidth += pt.x;
 351     Help_OnSize(hWnd);
 352
 353     ReleaseCapture();
 354 }
 355
 356 static void SB_OnMouseMove(HWND hWnd, WPARAM wParam, LPARAM lParam)
 357 {
 358     /* ignore WM_MOUSEMOVE if not dragging the SizeBar */
 359     if (!(wParam & MK_LBUTTON))
 360         return;
 361 }
 362
 363 static LRESULT CALLBACK SizeBar_WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 364 {
 365     switch (message)
 366     {
 367         case WM_LBUTTONDOWN:
 368             SB_OnLButtonDown(hWnd, wParam, lParam);
 369             break;
 370         case WM_LBUTTONUP:
 371             SB_OnLButtonUp(hWnd, wParam, lParam);
 372             break;
 373         case WM_MOUSEMOVE:
 374             SB_OnMouseMove(hWnd, wParam, lParam);
 375             break;
 376         case WM_PAINT:
 377             SB_OnPaint(hWnd);
 378             break;
 379         default:
 380             return DefWindowProcW(hWnd, message, wParam, lParam);
 381     }
 382
 383     return 0;
 384 }
 385
 386 static void HH_RegisterSizeBarClass(HHInfo *pHHInfo)
 387 {
 388     WNDCLASSEXW wcex;
 389
 390     wcex.cbSize         = sizeof(WNDCLASSEXW);
 391     wcex.style          = 0;
 392     wcex.lpfnWndProc    = SizeBar_WndProc;
 393     wcex.cbClsExtra     = 0;
 394     wcex.cbWndExtra     = sizeof(LONG_PTR);
 395     wcex.hInstance      = hhctrl_hinstance;
 396     wcex.hIcon          = LoadIconW(NULL, (LPCWSTR)IDI_APPLICATION);
 397     wcex.hCursor        = LoadCursorW(NULL, (LPCWSTR)IDC_SIZEWE);
 398     wcex.hbrBackground  = (HBRUSH)(COLOR_MENU + 1);
 399     wcex.lpszMenuName   = NULL;
 400     wcex.lpszClassName  = szSizeBarClass;
 401     wcex.hIconSm        = LoadIconW(NULL, (LPCWSTR)IDI_APPLICATION);
 402
 403     RegisterClassExW(&wcex);
 404 }
 405
 406 static void SB_GetSizeBarRect(HHInfo *info, RECT *rc)
 407 {
 408     RECT rectWND, rectTB, rectNP;
 409
 410     GetClientRect(info->WinType.hwndHelp, &rectWND);
 411     GetClientRect(info->WinType.hwndToolBar, &rectTB);
 412     GetClientRect(info->WinType.hwndNavigation, &rectNP);
 413
 414     rc->left = rectNP.right;
 415     rc->top = rectTB.bottom;
 416     rc->bottom = rectWND.bottom - rectTB.bottom;
 417     rc->right = SIZEBAR_WIDTH;
 418 }
 419
 420 static BOOL HH_AddSizeBar(HHInfo *pHHInfo)
 421 {
 422     HWND hWnd;
 423     HWND hwndParent = pHHInfo->WinType.hwndHelp;
 424     DWORD dwStyles = WS_CHILDWINDOW | WS_OVERLAPPED;
 425     DWORD dwExStyles = WS_EX_LEFT | WS_EX_LTRREADING | WS_EX_RIGHTSCROLLBAR;
 426     RECT rc;
 427
 428     if (!pHHInfo->WinType.fNotExpanded)
 429         dwStyles |= WS_VISIBLE;
 430
 431     SB_GetSizeBarRect(pHHInfo, &rc);
 432
 433     hWnd = CreateWindowExW(dwExStyles, szSizeBarClass, szEmpty, dwStyles,
 434                            rc.left, rc.top, rc.right, rc.bottom,
 435                            hwndParent, NULL, hhctrl_hinstance, NULL);
 436     if (!hWnd)
 437         return FALSE;
 438
 439     /* store the pointer to the HH info struct */
 440     SetWindowLongPtrW(hWnd, 0, (LONG_PTR)pHHInfo);
 441
 442     pHHInfo->hwndSizeBar = hWnd;
 443     return TRUE;
 444 }
 445
 446 /* Child Window */
 447
 448 static const WCHAR szChildClass[] = {
 449     'H','H',' ','C','h','i','l','d',0
 450 };
 451
 452 static LRESULT Child_OnPaint(HWND hWnd)
 453 {
 454     PAINTSTRUCT ps;
 455     HDC hdc;
 456     RECT rc;
 457
 458     hdc = BeginPaint(hWnd, &ps);
 459
 460     /* Only paint the Navigation pane, identified by the fact
 461      * that it has a child window
 462      */
 463     if (GetWindow(hWnd, GW_CHILD))
 464     {
 465         GetClientRect(hWnd, &rc);
 466
 467         /* set the border color */
 468         SelectObject(hdc, GetStockObject(DC_PEN));
 469         SetDCPenColor(hdc, GetSysColor(COLOR_BTNSHADOW));
 470
 471         /* Draw the top border */
 472         LineTo(hdc, rc.right, 0);
 473
 474         SelectObject(hdc, GetStockObject(WHITE_PEN));
 475         MoveToEx(hdc, 0, 1, NULL);
 476         LineTo(hdc, rc.right, 1);
 477     }
 478
 479     EndPaint(hWnd, &ps);
 480
 481     return 0;
 482 }
 483
 484 static void ResizeTabChild(HHInfo *info, int tab)
 485 {
 486     HWND hwnd = info->tabs[tab].hwnd;
 487     INT width, height;
 488     RECT rect, tabrc;
 489     DWORD cnt;
 490
 491     GetClientRect(info->WinType.hwndNavigation, &rect);
 492     SendMessageW(info->hwndTabCtrl, TCM_GETITEMRECT, 0, (LPARAM)&tabrc);
 493     cnt = SendMessageW(info->hwndTabCtrl, TCM_GETROWCOUNT, 0, 0);
 494
 495     rect.left = TAB_MARGIN;
 496     rect.top = TAB_TOP_PADDING + cnt*(tabrc.bottom-tabrc.top) + TAB_MARGIN;
 497     rect.right -= TAB_RIGHT_PADDING + TAB_MARGIN;
 498     rect.bottom -= TAB_MARGIN;
 499     width = rect.right-rect.left;
 500     height = rect.bottom-rect.top;
 501
 502     SetWindowPos(hwnd, NULL, rect.left, rect.top, width, height,
 503                  SWP_NOZORDER | SWP_NOACTIVATE);
 504
 505     switch (tab)
 506     {
 507     case TAB_INDEX: {
 508         int scroll_width = GetSystemMetrics(SM_CXVSCROLL);
 509         int border_width = GetSystemMetrics(SM_CXBORDER);
 510         int edge_width = GetSystemMetrics(SM_CXEDGE);
 511
 512         /* Resize the tab widget column to perfectly fit the tab window and
 513          * leave sufficient space for the scroll widget.
 514          */
 515         SendMessageW(info->tabs[TAB_INDEX].hwnd, LVM_SETCOLUMNWIDTH, 0,
 516                      width-scroll_width-2*border_width-2*edge_width);
 517
 518         break;
 519     }
 520     case TAB_SEARCH: {
 521         int scroll_width = GetSystemMetrics(SM_CXVSCROLL);
 522         int border_width = GetSystemMetrics(SM_CXBORDER);
 523         int edge_width = GetSystemMetrics(SM_CXEDGE);
 524         int top_pos = 0;
 525
 526         SetWindowPos(info->search.hwndEdit, NULL, 0, top_pos, width,
 527                       EDIT_HEIGHT, SWP_NOZORDER | SWP_NOACTIVATE);
 528         top_pos += EDIT_HEIGHT + TAB_MARGIN;
 529         SetWindowPos(info->search.hwndList, NULL, 0, top_pos, width,
 530                       height-top_pos, SWP_NOZORDER | SWP_NOACTIVATE);
 531         /* Resize the tab widget column to perfectly fit the tab window and
 532          * leave sufficient space for the scroll widget.
 533          */
 534         SendMessageW(info->search.hwndList, LVM_SETCOLUMNWIDTH, 0,
 535                      width-scroll_width-2*border_width-2*edge_width);
 536
 537         break;
 538     }
 539     }
 540 }
 541
 542 static LRESULT Child_OnSize(HWND hwnd)
 543 {
 544     HHInfo *info = (HHInfo*)GetWindowLongPtrW(hwnd, 0);
 545     RECT rect;
 546
 547     if(!info || hwnd != info->WinType.hwndNavigation)
 548         return 0;
 549
 550     GetClientRect(hwnd, &rect);
 551     SetWindowPos(info->hwndTabCtrl, HWND_TOP, 0, 0,
 552                  rect.right - TAB_RIGHT_PADDING,
 553                  rect.bottom - TAB_TOP_PADDING, SWP_NOMOVE);
 554
 555     ResizeTabChild(info, TAB_CONTENTS);
 556     ResizeTabChild(info, TAB_INDEX);
 557     ResizeTabChild(info, TAB_SEARCH);
 558     return 0;
 559 }
 560
 561 static LRESULT OnTabChange(HWND hwnd)
 562 {
 563     HHInfo *info = (HHInfo*)GetWindowLongPtrW(hwnd, 0);
 564     int tab_id, tab_index, i;
 565
 566     TRACE("%p\n", hwnd);
 567
 568     if (!info)
 569         return 0;
 570
 571     if(info->tabs[info->current_tab].hwnd)
 572         ShowWindow(info->tabs[info->current_tab].hwnd, SW_HIDE);
 573
 574     tab_id = (int) SendMessageW(info->hwndTabCtrl, TCM_GETCURSEL, 0, 0);
 575     /* convert the ID of the tab to an index in our tab list */
 576     tab_index = -1;
 577     for (i=0; i<TAB_NUMTABS; i++)
 578     {
 579         if (info->tabs[i].id == tab_id)
 580         {
 581             tab_index = i;
 582             break;
 583         }
 584     }
 585     if (tab_index == -1)
 586     {
 587         FIXME("Tab ID %d does not correspond to a valid index in the tab list.\n", tab_id);
 588         return 0;
 589     }
 590     info->current_tab = tab_index;
 591
 592     if(info->tabs[info->current_tab].hwnd)
 593         ShowWindow(info->tabs[info->current_tab].hwnd, SW_SHOW);
 594
 595     return 0;
 596 }
 597
 598 static LRESULT OnTopicChange(HHInfo *info, void *user_data)
 599 {
 600     LPCWSTR chmfile = NULL, name = NULL, local = NULL;
 601     ContentItem *citer;
 602     SearchItem *siter;
 603     IndexItem *iiter;
 604
 605     if(!user_data || !info)
 606         return 0;
 607
 608     switch (info->current_tab)
 609     {
 610     case TAB_CONTENTS:
 611         citer = (ContentItem *) user_data;
 612         name = citer->name;
 613         local = citer->local;
 614         while(citer) {
 615             if(citer->merge.chm_file) {
 616                 chmfile = citer->merge.chm_file;
 617                 break;
 618             }
 619             citer = citer->parent;
 620         }
 621         break;
 622     case TAB_INDEX:
 623         iiter = (IndexItem *) user_data;
 624         if(iiter->nItems == 0) {
 625             FIXME("No entries for this item!\n");
 626             return 0;
 627         }
 628         if(iiter->nItems > 1) {
 629             int i = 0;
 630             LVITEMW lvi;
 631
 632             SendMessageW(info->popup.hwndList, LVM_DELETEALLITEMS, 0, 0);
 633             for(i=0;i<iiter->nItems;i++) {
 634                 IndexSubItem *item = &iiter->items[i];
 635                 WCHAR *name = iiter->keyword;
 636
 637                 if(!item->name)
 638                     item->name = GetDocumentTitle(info->pCHMInfo, item->local);
 639                 if(item->name)
 640                     name = item->name;
 641                 memset(&lvi, 0, sizeof(lvi));
 642                 lvi.iItem = i;
 643                 lvi.mask = LVIF_TEXT|LVIF_PARAM;
 644                 lvi.cchTextMax = strlenW(name)+1;
 645                 lvi.pszText = name;
 646                 lvi.lParam = (LPARAM) item;
 647                 SendMessageW(info->popup.hwndList, LVM_INSERTITEMW, 0, (LPARAM)&lvi);
 648             }
 649             ShowWindow(info->popup.hwndPopup, SW_SHOW);
 650             return 0;
 651         }
 652         name = iiter->items[0].name;
 653         local = iiter->items[0].local;
 654         chmfile = iiter->merge.chm_file;
 655         break;
 656     case TAB_SEARCH:
 657         siter = (SearchItem *) user_data;
 658         name = siter->filename;
 659         local = siter->filename;
 660         chmfile = info->pCHMInfo->szFile;
 661         break;
 662     default:
 663         FIXME("Unhandled operation for this tab!\n");
 664         return 0;
 665     }
 666
 667     if(!chmfile)
 668     {
 669         FIXME("No help file found for this item!\n");
 670         return 0;
 671     }
 672
 673     TRACE("name %s loal %s\n", debugstr_w(name), debugstr_w(local));
 674
 675     NavigateToChm(info, chmfile, local);
 676     return 0;
 677 }
 678
 679 /* Capture the Enter/Return key and send it up to Child_WndProc as an NM_RETURN message */
 680 static LRESULT CALLBACK EditChild_WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 681 {
 682     WNDPROC editWndProc = (WNDPROC)GetWindowLongPtrW(hWnd, GWLP_USERDATA);
 683
 684     if(message == WM_KEYUP && wParam == VK_RETURN)
 685     {
 686         NMHDR nmhdr;
 687
 688         nmhdr.hwndFrom = hWnd;
 689         nmhdr.code = NM_RETURN;
 690         SendMessageW(GetParent(GetParent(hWnd)), WM_NOTIFY, wParam, (LPARAM)&nmhdr);
 691     }
 692     return editWndProc(hWnd, message, wParam, lParam);
 693 }
 694
 695 static LRESULT CALLBACK Child_WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 696 {
 697     switch (message)
 698     {
 699     case WM_PAINT:
 700         return Child_OnPaint(hWnd);
 701     case WM_SIZE:
 702         return Child_OnSize(hWnd);
 703     case WM_NOTIFY: {
 704         HHInfo *info = (HHInfo*)GetWindowLongPtrW(hWnd, 0);
 705         NMHDR *nmhdr = (NMHDR*)lParam;
 706
 707         switch(nmhdr->code) {
 708         case TCN_SELCHANGE:
 709             return OnTabChange(hWnd);
 710         case TVN_SELCHANGEDW:
 711             return OnTopicChange(info, (void*)((NMTREEVIEWW *)lParam)->itemNew.lParam);
 712         case TVN_ITEMEXPANDINGW: {
 713             TVITEMW *item = &((NMTREEVIEWW *)lParam)->itemNew;
 714             HWND hwndTreeView = info->tabs[TAB_CONTENTS].hwnd;
 715
 716             item->mask = TVIF_IMAGE|TVIF_SELECTEDIMAGE;
 717             if (item->state & TVIS_EXPANDED)
 718             {
 719                 item->iImage = HHTV_FOLDER;
 720                 item->iSelectedImage = HHTV_FOLDER;
 721             }
 722             else
 723             {
 724                 item->iImage = HHTV_OPENFOLDER;
 725                 item->iSelectedImage = HHTV_OPENFOLDER;
 726             }
 727             SendMessageW(hwndTreeView, TVM_SETITEMW, 0, (LPARAM)item);
 728             return 0;
 729         }
 730         case NM_DBLCLK:
 731             if(!info)
 732                 return 0;
 733             switch(info->current_tab)
 734             {
 735             case TAB_INDEX:
 736                 return OnTopicChange(info, (void*)((NMITEMACTIVATE *)lParam)->lParam);
 737             case TAB_SEARCH:
 738                 return OnTopicChange(info, (void*)((NMITEMACTIVATE *)lParam)->lParam);
 739             }
 740             break;
 741         case NM_RETURN:
 742             if(!info)
 743                 return 0;
 744             switch(info->current_tab) {
 745             case TAB_INDEX: {
 746                 HWND hwndList = info->tabs[TAB_INDEX].hwnd;
 747                 LVITEMW lvItem;
 748
 749                 lvItem.iItem = (int) SendMessageW(hwndList, LVM_GETSELECTIONMARK, 0, 0);
 750                 lvItem.mask = TVIF_PARAM;
 751                 SendMessageW(hwndList, LVM_GETITEMW, 0, (LPARAM)&lvItem);
 752                 OnTopicChange(info, (void*) lvItem.lParam);
 753                 return 0;
 754             }
 755             case TAB_SEARCH: {
 756                 if(nmhdr->hwndFrom == info->search.hwndEdit) {
 757                     char needle[100];
 758                     DWORD i, len;
 759
 760                     len = GetWindowTextA(info->search.hwndEdit, needle, sizeof(needle));
 761                     if(!len)
 762                     {
 763                         FIXME("Unable to get search text.\n");
 764                         return 0;
 765                     }
 766                     /* Convert the requested text for comparison later against the
 767                      * lower case version of HTML file contents.
 768                      */
 769                     for(i=0;i<len;i++)
 770                         needle[i] = tolower(needle[i]);
 771                     InitSearch(info, needle);
 772                     return 0;
 773                 }else if(nmhdr->hwndFrom == info->search.hwndList) {
 774                     HWND hwndList = info->search.hwndList;
 775                     LVITEMW lvItem;
 776
 777                     lvItem.iItem = (int) SendMessageW(hwndList, LVM_GETSELECTIONMARK, 0, 0);
 778                     lvItem.mask = TVIF_PARAM;
 779                     SendMessageW(hwndList, LVM_GETITEMW, 0, (LPARAM)&lvItem);
 780                     OnTopicChange(info, (void*) lvItem.lParam);
 781                     return 0;
 782                 }
 783                 break;
 784             }
 785             }
 786             break;
 787         }
 788         break;
 789     }
 790     default:
 791         return DefWindowProcW(hWnd, message, wParam, lParam);
 792     }
 793
 794     return 0;
 795 }
 796
 797 static void HH_RegisterChildWndClass(HHInfo *pHHInfo)
 798 {
 799     WNDCLASSEXW wcex;
 800
 801     wcex.cbSize         = sizeof(WNDCLASSEXW);
 802     wcex.style          = 0;
 803     wcex.lpfnWndProc    = Child_WndProc;
 804     wcex.cbClsExtra     = 0;
 805     wcex.cbWndExtra     = sizeof(LONG_PTR);
 806     wcex.hInstance      = hhctrl_hinstance;
 807     wcex.hIcon          = LoadIconW(NULL, (LPCWSTR)IDI_APPLICATION);
 808     wcex.hCursor        = LoadCursorW(NULL, (LPCWSTR)IDC_ARROW);
 809     wcex.hbrBackground  = (HBRUSH)(COLOR_BTNFACE + 1);
 810     wcex.lpszMenuName   = NULL;
 811     wcex.lpszClassName  = szChildClass;
 812     wcex.hIconSm        = LoadIconW(NULL, (LPCWSTR)IDI_APPLICATION);
 813
 814     RegisterClassExW(&wcex);
 815 }
 816
 817 /* Toolbar */
 818
 819 #define ICON_SIZE   20
 820
 821 static void DisplayPopupMenu(HHInfo *info)
 822 {
 823     HMENU menu, submenu;
 824     TBBUTTONINFOW button;
 825     MENUITEMINFOW item;
 826     POINT coords;
 827     RECT rect;
 828     DWORD index;
 829
 830     menu = LoadMenuW(hhctrl_hinstance, MAKEINTRESOURCEW(MENU_POPUP));
 831
 832     if (!menu)
 833         return;
 834
 835     submenu = GetSubMenu(menu, 0);
 836
 837     /* Update the Show/Hide menu item */
 838     item.cbSize = sizeof(MENUITEMINFOW);
 839     item.fMask = MIIM_FTYPE | MIIM_STATE | MIIM_STRING;
 840     item.fType = MFT_STRING;
 841     item.fState = MF_ENABLED;
 842
 843     if (info->WinType.fNotExpanded)
 844         item.dwTypeData = HH_LoadString(IDS_SHOWTABS);
 845     else
 846         item.dwTypeData = HH_LoadString(IDS_HIDETABS);
 847
 848     SetMenuItemInfoW(submenu, IDTB_EXPAND, FALSE, &item);
 849     heap_free(item.dwTypeData);
 850
 851     /* Find the index toolbar button */
 852     button.cbSize = sizeof(TBBUTTONINFOW);
 853     button.dwMask = TBIF_COMMAND;
 854     index = SendMessageW(info->WinType.hwndToolBar, TB_GETBUTTONINFOW, IDTB_OPTIONS, (LPARAM) &button);
 855
 856     if (index == -1)
 857        return;
 858
 859     /* Get position */
 860     SendMessageW(info->WinType.hwndToolBar, TB_GETITEMRECT, index, (LPARAM) &rect);
 861
 862     coords.x = rect.left;
 863     coords.y = rect.bottom;
 864
 865     ClientToScreen(info->WinType.hwndToolBar, &coords);
 866     TrackPopupMenu(submenu, TPM_LEFTALIGN | TPM_TOPALIGN | TPM_LEFTBUTTON | TPM_NOANIMATION, coords.x, coords.y, 0, info->WinType.hwndHelp, NULL);
 867 }
 868
 869 static void TB_OnClick(HWND hWnd, DWORD dwID)
 870 {
 871     HHInfo *info = (HHInfo *)GetWindowLongPtrW(hWnd, 0);
 872
 873     switch (dwID)
 874     {
 875         case IDTB_STOP:
 876             DoPageAction(info, WB_STOP);
 877             break;
 878         case IDTB_REFRESH:
 879             DoPageAction(info, WB_REFRESH);
 880             break;
 881         case IDTB_BACK:
 882             DoPageAction(info, WB_GOBACK);
 883             break;
 884         case IDTB_HOME:
 885             NavigateToChm(info, info->pCHMInfo->szFile, info->WinType.pszHome);
 886             break;
 887         case IDTB_FORWARD:
 888             DoPageAction(info, WB_GOFORWARD);
 889             break;
 890         case IDTB_PRINT:
 891             DoPageAction(info, WB_PRINT);
 892             break;
 893         case IDTB_EXPAND:
 894         case IDTB_CONTRACT:
 895             ExpandContract(info);
 896             break;
 897         case IDTB_SYNC:
 898             DoSync(info);
 899             break;
 900         case IDTB_OPTIONS:
 901             DisplayPopupMenu(info);
 902             break;
 903         case IDTB_NOTES:
 904         case IDTB_CONTENTS:
 905         case IDTB_INDEX:
 906         case IDTB_SEARCH:
 907         case IDTB_HISTORY:
 908         case IDTB_FAVORITES:
 909             /* These are officially unimplemented as of the Windows 7 SDK */
 910             break;
 911         case IDTB_BROWSE_FWD:
 912         case IDTB_BROWSE_BACK:
 913         case IDTB_JUMP1:
 914         case IDTB_JUMP2:
 915         case IDTB_CUSTOMIZE:
 916         case IDTB_ZOOM:
 917         case IDTB_TOC_NEXT:
 918         case IDTB_TOC_PREV:
 919             break;
 920     }
 921 }
 922
 923 static void TB_AddButton(TBBUTTON *pButtons, DWORD dwIndex, DWORD dwID, DWORD dwBitmap)
 924 {
 925     pButtons[dwIndex].iBitmap = dwBitmap;
 926     pButtons[dwIndex].idCommand = dwID;
 927     pButtons[dwIndex].fsState = TBSTATE_ENABLED;
 928     pButtons[dwIndex].fsStyle = BTNS_BUTTON;
 929     pButtons[dwIndex].dwData = 0;
 930     pButtons[dwIndex].iString = 0;
 931 }
 932
 933 static void TB_AddButtonsFromFlags(HHInfo *pHHInfo, TBBUTTON *pButtons, DWORD dwButtonFlags, LPDWORD pdwNumButtons)
 934 {
 935     int nHistBitmaps = 0, nStdBitmaps = 0, nHHBitmaps = 0;
 936     HWND hToolbar = pHHInfo->WinType.hwndToolBar;
 937     TBADDBITMAP tbAB;
 938     DWORD unsupported;
 939
 940     /* Common bitmaps */
 941     tbAB.hInst = HINST_COMMCTRL;
 942     tbAB.nID = IDB_HIST_LARGE_COLOR;
 943     nHistBitmaps = SendMessageW(hToolbar, TB_ADDBITMAP, 0, (LPARAM)&tbAB);
 944     tbAB.nID = IDB_STD_LARGE_COLOR;
 945     nStdBitmaps = SendMessageW(hToolbar, TB_ADDBITMAP, 0, (LPARAM)&tbAB);
 946     /* hhctrl.ocx bitmaps */
 947     tbAB.hInst = hhctrl_hinstance;
 948     tbAB.nID = IDB_HHTOOLBAR;
 949     nHHBitmaps = SendMessageW(hToolbar, TB_ADDBITMAP, HHTB_NUMBITMAPS, (LPARAM)&tbAB);
 950
 951     *pdwNumButtons = 0;
 952
 953     unsupported = dwButtonFlags & (HHWIN_BUTTON_BROWSE_FWD |
 954         HHWIN_BUTTON_BROWSE_BCK | HHWIN_BUTTON_NOTES | HHWIN_BUTTON_CONTENTS |
 955         HHWIN_BUTTON_INDEX | HHWIN_BUTTON_SEARCH | HHWIN_BUTTON_HISTORY |
 956         HHWIN_BUTTON_FAVORITES | HHWIN_BUTTON_JUMP1 | HHWIN_BUTTON_JUMP2 |
 957         HHWIN_BUTTON_ZOOM | HHWIN_BUTTON_TOC_NEXT | HHWIN_BUTTON_TOC_PREV);
 958     if (unsupported)
 959         FIXME("got asked for unsupported buttons: %06x\n", unsupported);
 960
 961     if (dwButtonFlags & HHWIN_BUTTON_EXPAND)
 962     {
 963         TB_AddButton(pButtons, (*pdwNumButtons)++, IDTB_EXPAND, nHHBitmaps + HHTB_EXPAND);
 964         TB_AddButton(pButtons, (*pdwNumButtons)++, IDTB_CONTRACT, nHHBitmaps + HHTB_CONTRACT);
 965
 966         if (pHHInfo->WinType.fNotExpanded)
 967             pButtons[1].fsState |= TBSTATE_HIDDEN;
 968         else
 969             pButtons[0].fsState |= TBSTATE_HIDDEN;
 970     }
 971
 972     if (dwButtonFlags & HHWIN_BUTTON_BACK)
 973         TB_AddButton(pButtons, (*pdwNumButtons)++, IDTB_BACK, nHistBitmaps + HIST_BACK);
 974
 975     if (dwButtonFlags & HHWIN_BUTTON_FORWARD)
 976         TB_AddButton(pButtons, (*pdwNumButtons)++, IDTB_FORWARD, nHistBitmaps + HIST_FORWARD);
 977
 978     if (dwButtonFlags & HHWIN_BUTTON_STOP)
 979         TB_AddButton(pButtons, (*pdwNumButtons)++, IDTB_STOP, nHHBitmaps + HHTB_STOP);
 980
 981     if (dwButtonFlags & HHWIN_BUTTON_REFRESH)
 982         TB_AddButton(pButtons, (*pdwNumButtons)++, IDTB_REFRESH, nHHBitmaps + HHTB_REFRESH);
 983
 984     if (dwButtonFlags & HHWIN_BUTTON_HOME)
 985         TB_AddButton(pButtons, (*pdwNumButtons)++, IDTB_HOME, nHHBitmaps + HHTB_HOME);
 986
 987     if (dwButtonFlags & HHWIN_BUTTON_SYNC)
 988         TB_AddButton(pButtons, (*pdwNumButtons)++, IDTB_SYNC, nHHBitmaps + HHTB_SYNC);
 989
 990     if (dwButtonFlags & HHWIN_BUTTON_OPTIONS)
 991         TB_AddButton(pButtons, (*pdwNumButtons)++, IDTB_OPTIONS, nStdBitmaps + STD_PROPERTIES);
 992
 993     if (dwButtonFlags & HHWIN_BUTTON_PRINT)
 994         TB_AddButton(pButtons, (*pdwNumButtons)++, IDTB_PRINT, nStdBitmaps + STD_PRINT);
 995 }
 996
 997 static BOOL HH_AddToolbar(HHInfo *pHHInfo)
 998 {
 999     HWND hToolbar;
1000     HWND hwndParent = pHHInfo->WinType.hwndHelp;
1001     DWORD toolbarFlags;
1002     TBBUTTON buttons[IDTB_TOC_PREV - IDTB_EXPAND];
1003     DWORD dwStyles, dwExStyles;
1004     DWORD dwNumButtons, dwIndex;
1005
1006     if (pHHInfo->WinType.fsWinProperties & HHWIN_PARAM_TB_FLAGS)
1007         toolbarFlags = pHHInfo->WinType.fsToolBarFlags;
1008     else
1009         toolbarFlags = HHWIN_DEF_BUTTONS;
1010
1011     dwStyles = WS_CHILDWINDOW | WS_VISIBLE | TBSTYLE_FLAT |
1012                TBSTYLE_WRAPABLE | TBSTYLE_TOOLTIPS | CCS_NODIVIDER;
1013     dwExStyles = WS_EX_LEFT | WS_EX_LTRREADING | WS_EX_RIGHTSCROLLBAR;
1014
1015     hToolbar = CreateWindowExW(dwExStyles, TOOLBARCLASSNAMEW, NULL, dwStyles,
1016                                0, 0, 0, 0, hwndParent, NULL,
1017                                hhctrl_hinstance, NULL);
1018     if (!hToolbar)
1019         return FALSE;
1020     pHHInfo->WinType.hwndToolBar = hToolbar;
1021
1022     SendMessageW(hToolbar, TB_SETBITMAPSIZE, 0, MAKELONG(ICON_SIZE, ICON_SIZE));
1023     SendMessageW(hToolbar, TB_BUTTONSTRUCTSIZE, sizeof(TBBUTTON), 0);
1024     SendMessageW(hToolbar, WM_SETFONT, (WPARAM)pHHInfo->hFont, TRUE);
1025
1026     TB_AddButtonsFromFlags(pHHInfo, buttons, toolbarFlags, &dwNumButtons);
1027
1028     for (dwIndex = 0; dwIndex < dwNumButtons; dwIndex++)
1029     {
1030         LPWSTR szBuf = HH_LoadString(buttons[dwIndex].idCommand);
1031         DWORD dwLen = strlenW(szBuf);
1032         szBuf[dwLen + 1] = 0; /* Double-null terminate */
1033
1034         buttons[dwIndex].iString = (DWORD)SendMessageW(hToolbar, TB_ADDSTRINGW, 0, (LPARAM)szBuf);
1035         heap_free(szBuf);
1036     }
1037
1038     SendMessageW(hToolbar, TB_ADDBUTTONSW, dwNumButtons, (LPARAM)buttons);
1039     SendMessageW(hToolbar, TB_AUTOSIZE, 0, 0);
1040     ShowWindow(hToolbar, SW_SHOW);
1041
1042     return TRUE;
1043 }
1044
1045 /* Navigation Pane */
1046
1047 static void NP_GetNavigationRect(HHInfo *pHHInfo, RECT *rc)
1048 {
1049     HWND hwndParent = pHHInfo->WinType.hwndHelp;
1050     HWND hwndToolbar = pHHInfo->WinType.hwndToolBar;
1051     RECT rectWND, rectTB;
1052
1053     GetClientRect(hwndParent, &rectWND);
1054     GetClientRect(hwndToolbar, &rectTB);
1055
1056     rc->left = 0;
1057     rc->top = rectTB.bottom;
1058     rc->bottom = rectWND.bottom - rectTB.bottom;
1059
1060     if (!(pHHInfo->WinType.fsValidMembers & HHWIN_PARAM_NAV_WIDTH) &&
1061           pHHInfo->WinType.iNavWidth == 0)
1062     {
1063         pHHInfo->WinType.iNavWidth = WINTYPE_DEFAULT_NAVWIDTH;
1064     }
1065
1066     rc->right = pHHInfo->WinType.iNavWidth;
1067 }
1068
1069 static DWORD NP_CreateTab(HINSTANCE hInstance, HWND hwndTabCtrl, DWORD index)
1070 {
1071     TCITEMW tie;
1072     LPWSTR tabText = HH_LoadString(index);
1073     DWORD ret;
1074
1075     tie.mask = TCIF_TEXT;
1076     tie.pszText = tabText;
1077
1078     ret = SendMessageW( hwndTabCtrl, TCM_INSERTITEMW, index, (LPARAM)&tie );
1079
1080     heap_free(tabText);
1081     return ret;
1082 }
1083
1084 static BOOL HH_AddNavigationPane(HHInfo *info)
1085 {
1086     HWND hWnd, hwndTabCtrl;
1087     HWND hwndParent = info->WinType.hwndHelp;
1088     DWORD dwStyles = WS_CHILDWINDOW;
1089     DWORD dwExStyles = WS_EX_LEFT | WS_EX_LTRREADING | WS_EX_RIGHTSCROLLBAR;
1090     RECT rc;
1091
1092     if (!info->WinType.fNotExpanded)
1093         dwStyles |= WS_VISIBLE;
1094
1095     NP_GetNavigationRect(info, &rc);
1096
1097     hWnd = CreateWindowExW(dwExStyles, szChildClass, szEmpty, dwStyles,
1098                            rc.left, rc.top, rc.right, rc.bottom,
1099                            hwndParent, NULL, hhctrl_hinstance, NULL);
1100     if (!hWnd)
1101         return FALSE;
1102
1103     SetWindowLongPtrW(hWnd, 0, (LONG_PTR)info);
1104
1105     hwndTabCtrl = CreateWindowExW(dwExStyles, WC_TABCONTROLW, szEmpty, dwStyles | WS_VISIBLE,
1106                                   0, TAB_TOP_PADDING,
1107                                   rc.right - TAB_RIGHT_PADDING,
1108                                   rc.bottom - TAB_TOP_PADDING,
1109                                   hWnd, NULL, hhctrl_hinstance, NULL);
1110     if (!hwndTabCtrl)
1111         return FALSE;
1112
1113     if (*info->WinType.pszToc)
1114         info->tabs[TAB_CONTENTS].id = NP_CreateTab(hhctrl_hinstance, hwndTabCtrl, IDS_CONTENTS);
1115
1116     if (*info->WinType.pszIndex)
1117         info->tabs[TAB_INDEX].id = NP_CreateTab(hhctrl_hinstance, hwndTabCtrl, IDS_INDEX);
1118
1119     if (info->WinType.fsWinProperties & HHWIN_PROP_TAB_SEARCH)
1120         info->tabs[TAB_SEARCH].id = NP_CreateTab(hhctrl_hinstance, hwndTabCtrl, IDS_SEARCH);
1121
1122     if (info->WinType.fsWinProperties & HHWIN_PROP_TAB_FAVORITES)
1123         info->tabs[TAB_FAVORITES].id = NP_CreateTab(hhctrl_hinstance, hwndTabCtrl, IDS_FAVORITES);
1124
1125     SendMessageW(hwndTabCtrl, WM_SETFONT, (WPARAM)info->hFont, TRUE);
1126
1127     info->hwndTabCtrl = hwndTabCtrl;
1128     info->WinType.hwndNavigation = hWnd;
1129     return TRUE;
1130 }
1131
1132 /* HTML Pane */
1133
1134 static void HP_GetHTMLRect(HHInfo *info, RECT *rc)
1135 {
1136     RECT rectTB, rectWND, rectNP, rectSB;
1137
1138     GetClientRect(info->WinType.hwndHelp, &rectWND);
1139     GetClientRect(info->WinType.hwndToolBar, &rectTB);
1140     GetClientRect(info->hwndSizeBar, &rectSB);
1141
1142     if (info->WinType.fNotExpanded)
1143         rc->left = 0;
1144     else
1145     {
1146         GetClientRect(info->WinType.hwndNavigation, &rectNP);
1147         rc->left = rectNP.right + rectSB.right;
1148     }
1149
1150     rc->top = rectTB.bottom;
1151     rc->right = rectWND.right - rc->left;
1152     rc->bottom = rectWND.bottom - rectTB.bottom;
1153 }
1154
1155 static BOOL HH_AddHTMLPane(HHInfo *pHHInfo)
1156 {
1157     HWND hWnd;
1158     HWND hwndParent = pHHInfo->WinType.hwndHelp;
1159     DWORD dwStyles = WS_CHILDWINDOW | WS_VISIBLE | WS_CLIPCHILDREN;
1160     DWORD dwExStyles = WS_EX_LEFT | WS_EX_LTRREADING | WS_EX_RIGHTSCROLLBAR | WS_EX_CLIENTEDGE;
1161     RECT rc;
1162
1163     HP_GetHTMLRect(pHHInfo, &rc);
1164
1165     hWnd = CreateWindowExW(dwExStyles, szChildClass, szEmpty, dwStyles,
1166                            rc.left, rc.top, rc.right, rc.bottom,
1167                            hwndParent, NULL, hhctrl_hinstance, NULL);
1168     if (!hWnd)
1169         return FALSE;
1170
1171     if (!InitWebBrowser(pHHInfo, hWnd))
1172         return FALSE;
1173
1174     /* store the pointer to the HH info struct */
1175     SetWindowLongPtrW(hWnd, 0, (LONG_PTR)pHHInfo);
1176
1177     ShowWindow(hWnd, SW_SHOW);
1178     UpdateWindow(hWnd);
1179
1180     pHHInfo->WinType.hwndHTML = hWnd;
1181     return TRUE;
1182 }
1183
1184 static BOOL AddContentTab(HHInfo *info)
1185 {
1186     HIMAGELIST hImageList;
1187     HBITMAP hBitmap;
1188     HWND hWnd;
1189
1190     if(info->tabs[TAB_CONTENTS].id == -1)
1191         return TRUE; /* No "Contents" tab */
1192     hWnd = CreateWindowExW(WS_EX_CLIENTEDGE, WC_TREEVIEWW, szEmpty, WS_CHILD | WS_BORDER | TVS_LINESATROOT
1193                            | TVS_SHOWSELALWAYS | TVS_HASBUTTONS, 50, 50, 100, 100,
1194                            info->WinType.hwndNavigation, NULL, hhctrl_hinstance, NULL);
1195     if(!hWnd) {
1196         ERR("Could not create treeview control\n");
1197         return FALSE;
1198     }
1199
1200     hImageList = ImageList_Create(16, 16, ILC_COLOR32, 0, HHTV_NUMBITMAPS);
1201     hBitmap = LoadBitmapW(hhctrl_hinstance, MAKEINTRESOURCEW(IDB_HHTREEVIEW));
1202     ImageList_Add(hImageList, hBitmap, NULL);
1203     SendMessageW(hWnd, TVM_SETIMAGELIST, TVSIL_NORMAL, (LPARAM)hImageList);
1204
1205     info->contents.hImageList = hImageList;
1206     info->tabs[TAB_CONTENTS].hwnd = hWnd;
1207     ResizeTabChild(info, TAB_CONTENTS);
1208     ShowWindow(hWnd, SW_SHOW);
1209
1210     return TRUE;
1211 }
1212
1213 static BOOL AddIndexTab(HHInfo *info)
1214 {
1215     char hidden_column[] = "Column";
1216     LVCOLUMNA lvc;
1217
1218     if(info->tabs[TAB_INDEX].id == -1)
1219         return TRUE; /* No "Index" tab */
1220     info->tabs[TAB_INDEX].hwnd = CreateWindowExW(WS_EX_CLIENTEDGE, WC_LISTVIEWW,
1221            szEmpty, WS_CHILD | WS_BORDER | LVS_SINGLESEL | LVS_REPORT | LVS_NOCOLUMNHEADER, 50, 50, 100, 100,
1222            info->WinType.hwndNavigation, NULL, hhctrl_hinstance, NULL);
1223     if(!info->tabs[TAB_INDEX].hwnd) {
1224         ERR("Could not create ListView control\n");
1225         return FALSE;
1226     }
1227     memset(&lvc, 0, sizeof(lvc));
1228     lvc.mask = LVCF_TEXT;
1229     lvc.pszText = hidden_column;
1230     if(SendMessageW(info->tabs[TAB_INDEX].hwnd, LVM_INSERTCOLUMNA, 0, (LPARAM) &lvc) == -1)
1231     {
1232         ERR("Could not create ListView column\n");
1233         return FALSE;
1234     }
1235
1236     ResizeTabChild(info, TAB_INDEX);
1237     ShowWindow(info->tabs[TAB_INDEX].hwnd, SW_HIDE);
1238
1239     return TRUE;
1240 }
1241
1242 static BOOL AddSearchTab(HHInfo *info)
1243 {
1244     HWND hwndList, hwndEdit, hwndContainer;
1245     char hidden_column[] = "Column";
1246     WNDPROC editWndProc;
1247     LVCOLUMNA lvc;
1248
1249     if(info->tabs[TAB_SEARCH].id == -1)
1250         return TRUE; /* No "Search" tab */
1251     hwndContainer = CreateWindowExW(WS_EX_CONTROLPARENT, szChildClass, szEmpty,
1252                                     WS_CHILD, 0, 0, 0, 0, info->WinType.hwndNavigation,
1253                                     NULL, hhctrl_hinstance, NULL);
1254     if(!hwndContainer) {
1255         ERR("Could not create search window container control.\n");
1256         return FALSE;
1257     }
1258     hwndEdit = CreateWindowExW(WS_EX_CLIENTEDGE, WC_EDITW, szEmpty, WS_CHILD
1259                                 | WS_VISIBLE | ES_LEFT | SS_NOTIFY, 0, 0, 0, 0,
1260                                hwndContainer, NULL, hhctrl_hinstance, NULL);
1261     if(!hwndEdit) {
1262         ERR("Could not create search ListView control.\n");
1263         return FALSE;
1264     }
1265     if(SendMessageW(hwndEdit, WM_SETFONT, (WPARAM) info->hFont, (LPARAM) FALSE) == -1)
1266     {
1267         ERR("Could not set font for edit control.\n");
1268         return FALSE;
1269     }
1270     editWndProc = (WNDPROC) SetWindowLongPtrW(hwndEdit, GWLP_WNDPROC, (LONG_PTR)EditChild_WndProc);
1271     if(!editWndProc) {
1272         ERR("Could not redirect messages for edit control.\n");
1273         return FALSE;
1274     }
1275     SetWindowLongPtrW(hwndEdit, GWLP_USERDATA, (LONG_PTR)editWndProc);
1276     hwndList = CreateWindowExW(WS_EX_CLIENTEDGE, WC_LISTVIEWW, szEmpty,
1277                                WS_CHILD | WS_VISIBLE | WS_BORDER | LVS_SINGLESEL
1278                                 | LVS_REPORT | LVS_NOCOLUMNHEADER, 0, 0, 0, 0,
1279                                hwndContainer, NULL, hhctrl_hinstance, NULL);
1280     if(!hwndList) {
1281         ERR("Could not create search ListView control.\n");
1282         return FALSE;
1283     }
1284     memset(&lvc, 0, sizeof(lvc));
1285     lvc.mask = LVCF_TEXT;
1286     lvc.pszText = hidden_column;
1287     if(SendMessageW(hwndList, LVM_INSERTCOLUMNA, 0, (LPARAM) &lvc) == -1)
1288     {
1289         ERR("Could not create ListView column\n");
1290         return FALSE;
1291     }
1292
1293     info->search.hwndEdit = hwndEdit;
1294     info->search.hwndList = hwndList;
1295     info->search.hwndContainer = hwndContainer;
1296     info->tabs[TAB_SEARCH].hwnd = hwndContainer;
1297
1298     SetWindowLongPtrW(hwndContainer, 0, (LONG_PTR)info);
1299
1300     ResizeTabChild(info, TAB_SEARCH);
1301
1302     return TRUE;
1303 }
1304
1305 /* The Index tab's sub-topic popup */
1306
1307 static void ResizePopupChild(HHInfo *info)
1308 {
1309     int scroll_width = GetSystemMetrics(SM_CXVSCROLL);
1310     int border_width = GetSystemMetrics(SM_CXBORDER);
1311     int edge_width = GetSystemMetrics(SM_CXEDGE);
1312     INT width, height;
1313     RECT rect;
1314
1315     if(!info)
1316         return;
1317
1318     GetClientRect(info->popup.hwndPopup, &rect);
1319     SetWindowPos(info->popup.hwndCallback, HWND_TOP, 0, 0,
1320                  rect.right, rect.bottom, SWP_NOMOVE);
1321
1322     rect.left = TAB_MARGIN;
1323     rect.top = TAB_TOP_PADDING + TAB_MARGIN;
1324     rect.right -= TAB_RIGHT_PADDING + TAB_MARGIN;
1325     rect.bottom -= TAB_MARGIN;
1326     width = rect.right-rect.left;
1327     height = rect.bottom-rect.top;
1328
1329     SetWindowPos(info->popup.hwndList, NULL, rect.left, rect.top, width, height,
1330                  SWP_NOZORDER | SWP_NOACTIVATE);
1331
1332     SendMessageW(info->popup.hwndList, LVM_SETCOLUMNWIDTH, 0,
1333                  width-scroll_width-2*border_width-2*edge_width);
1334 }
1335
1336 static LRESULT CALLBACK HelpPopup_WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
1337 {
1338     HHInfo *info = (HHInfo *)GetWindowLongPtrW(hWnd, 0);
1339
1340     switch (message)
1341     {
1342     case WM_SIZE:
1343         ResizePopupChild(info);
1344         return 0;
1345     case WM_DESTROY:
1346         DestroyWindow(hWnd);
1347         return 0;
1348     case WM_CLOSE:
1349         ShowWindow(hWnd, SW_HIDE);
1350         return 0;
1351
1352     default:
1353         return DefWindowProcW(hWnd, message, wParam, lParam);
1354     }
1355
1356     return 0;
1357 }
1358
1359 static LRESULT CALLBACK PopupChild_WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
1360 {
1361     switch (message)
1362     {
1363     case WM_NOTIFY: {
1364         NMHDR *nmhdr = (NMHDR*)lParam;
1365         switch(nmhdr->code)
1366         {
1367         case NM_DBLCLK: {
1368             HHInfo *info = (HHInfo*)GetWindowLongPtrW(hWnd, 0);
1369             IndexSubItem *iter;
1370
1371             if(info == 0 || lParam == 0)
1372                 return 0;
1373             iter = (IndexSubItem*) ((NMITEMACTIVATE *)lParam)->lParam;
1374             if(iter == 0)
1375                 return 0;
1376             NavigateToChm(info, info->index->merge.chm_file, iter->local);
1377             ShowWindow(info->popup.hwndPopup, SW_HIDE);
1378             return 0;
1379         }
1380         case NM_RETURN: {
1381             HHInfo *info = (HHInfo*)GetWindowLongPtrW(hWnd, 0);
1382             IndexSubItem *iter;
1383             LVITEMW lvItem;
1384
1385             if(info == 0)
1386                 return 0;
1387
1388             lvItem.iItem = (int) SendMessageW(info->popup.hwndList, LVM_GETSELECTIONMARK, 0, 0);
1389             lvItem.mask = TVIF_PARAM;
1390             SendMessageW(info->popup.hwndList, LVM_GETITEMW, 0, (LPARAM)&lvItem);
1391             iter = (IndexSubItem*) lvItem.lParam;
1392             NavigateToChm(info, info->index->merge.chm_file, iter->local);
1393             ShowWindow(info->popup.hwndPopup, SW_HIDE);
1394             return 0;
1395         }
1396         }
1397         break;
1398     }
1399     default:
1400         return DefWindowProcW(hWnd, message, wParam, lParam);
1401     }
1402
1403     return 0;
1404 }
1405
1406 static BOOL AddIndexPopup(HHInfo *info)
1407 {
1408     static const WCHAR szPopupChildClass[] = {'H','H',' ','P','o','p','u','p',' ','C','h','i','l','d',0};
1409     static const WCHAR windowCaptionW[] = {'S','e','l','e','c','t',' ','T','o','p','i','c',':',0};
1410     static const WCHAR windowClassW[] = {'H','H',' ','P','o','p','u','p',0};
1411     HWND hwndList, hwndPopup, hwndCallback;
1412     char hidden_column[] = "Column";
1413     WNDCLASSEXW wcex;
1414     LVCOLUMNA lvc;
1415
1416     if(info->tabs[TAB_INDEX].id == -1)
1417         return TRUE; /* No "Index" tab */
1418
1419     wcex.cbSize         = sizeof(WNDCLASSEXW);
1420     wcex.style          = CS_HREDRAW | CS_VREDRAW;
1421     wcex.lpfnWndProc    = HelpPopup_WndProc;
1422     wcex.cbClsExtra     = 0;
1423     wcex.cbWndExtra     = sizeof(LONG_PTR);
1424     wcex.hInstance      = hhctrl_hinstance;
1425     wcex.hIcon          = LoadIconW(NULL, (LPCWSTR)IDI_APPLICATION);
1426     wcex.hCursor        = LoadCursorW(NULL, (LPCWSTR)IDC_ARROW);
1427     wcex.hbrBackground  = (HBRUSH)(COLOR_MENU + 1);
1428     wcex.lpszMenuName   = NULL;
1429     wcex.lpszClassName  = windowClassW;
1430     wcex.hIconSm        = LoadIconW(NULL, (LPCWSTR)IDI_APPLICATION);
1431     RegisterClassExW(&wcex);
1432
1433     wcex.cbSize         = sizeof(WNDCLASSEXW);
1434     wcex.style          = 0;
1435     wcex.lpfnWndProc    = PopupChild_WndProc;
1436     wcex.cbClsExtra     = 0;
1437     wcex.cbWndExtra     = sizeof(LONG_PTR);
1438     wcex.hInstance      = hhctrl_hinstance;
1439     wcex.hIcon          = LoadIconW(NULL, (LPCWSTR)IDI_APPLICATION);
1440     wcex.hCursor        = LoadCursorW(NULL, (LPCWSTR)IDC_ARROW);
1441     wcex.hbrBackground  = (HBRUSH)(COLOR_BTNFACE + 1);
1442     wcex.lpszMenuName   = NULL;
1443     wcex.lpszClassName  = szPopupChildClass;
1444     wcex.hIconSm        = LoadIconW(NULL, (LPCWSTR)IDI_APPLICATION);
1445     RegisterClassExW(&wcex);
1446
1447     hwndPopup = CreateWindowExW(WS_EX_LEFT | WS_EX_LTRREADING | WS_EX_APPWINDOW
1448                                  | WS_EX_WINDOWEDGE | WS_EX_RIGHTSCROLLBAR,
1449                                 windowClassW, windowCaptionW, WS_POPUPWINDOW
1450                                  | WS_OVERLAPPEDWINDOW | WS_VISIBLE
1451                                  | WS_CLIPSIBLINGS | WS_CLIPCHILDREN, CW_USEDEFAULT,
1452                                 CW_USEDEFAULT, 300, 200, info->WinType.hwndHelp,
1453                                 NULL, hhctrl_hinstance, NULL);
1454     if (!hwndPopup)
1455         return FALSE;
1456
1457     hwndCallback = CreateWindowExW(WS_EX_LEFT | WS_EX_LTRREADING | WS_EX_RIGHTSCROLLBAR,
1458                                    szPopupChildClass, szEmpty, WS_CHILDWINDOW | WS_VISIBLE,
1459                                    0, 0, 0, 0,
1460                                    hwndPopup, NULL, hhctrl_hinstance, NULL);
1461     if (!hwndCallback)
1462         return FALSE;
1463
1464     ShowWindow(hwndPopup, SW_HIDE);
1465     hwndList = CreateWindowExW(WS_EX_CLIENTEDGE, WC_LISTVIEWW, szEmpty,
1466                                WS_CHILD | WS_BORDER | LVS_SINGLESEL | LVS_REPORT
1467                                 | LVS_NOCOLUMNHEADER, 50, 50, 100, 100,
1468                                hwndCallback, NULL, hhctrl_hinstance, NULL);
1469     if(!hwndList) {
1470         ERR("Could not create popup ListView control\n");
1471         return FALSE;
1472     }
1473     memset(&lvc, 0, sizeof(lvc));
1474     lvc.mask = LVCF_TEXT;
1475     lvc.pszText = hidden_column;
1476     if(SendMessageW(hwndList, LVM_INSERTCOLUMNA, 0, (LPARAM) &lvc) == -1)
1477     {
1478         ERR("Could not create popup ListView column\n");
1479         return FALSE;
1480     }
1481
1482     info->popup.hwndCallback = hwndCallback;
1483     info->popup.hwndPopup = hwndPopup;
1484     info->popup.hwndList = hwndList;
1485     SetWindowLongPtrW(hwndPopup, 0, (LONG_PTR)info);
1486     SetWindowLongPtrW(hwndCallback, 0, (LONG_PTR)info);
1487
1488     ResizePopupChild(info);
1489     ShowWindow(hwndList, SW_SHOW);
1490
1491     return TRUE;
1492 }
1493
1494 /* Viewer Window */
1495
1496 static void ExpandContract(HHInfo *pHHInfo)
1497 {
1498     RECT r, nav;
1499
1500     pHHInfo->WinType.fNotExpanded = !pHHInfo->WinType.fNotExpanded;
1501     GetWindowRect(pHHInfo->WinType.hwndHelp, &r);
1502     NP_GetNavigationRect(pHHInfo, &nav);
1503
1504     /* hide/show both the nav bar and the size bar */
1505     if (pHHInfo->WinType.fNotExpanded)
1506     {
1507         ShowWindow(pHHInfo->WinType.hwndNavigation, SW_HIDE);
1508         ShowWindow(pHHInfo->hwndSizeBar, SW_HIDE);
1509         r.left = r.left + nav.right;
1510
1511         SendMessageW(pHHInfo->WinType.hwndToolBar, TB_HIDEBUTTON, IDTB_EXPAND, MAKELPARAM(FALSE, 0));
1512         SendMessageW(pHHInfo->WinType.hwndToolBar, TB_HIDEBUTTON, IDTB_CONTRACT, MAKELPARAM(TRUE, 0));
1513     }
1514     else
1515     {
1516         ShowWindow(pHHInfo->WinType.hwndNavigation, SW_SHOW);
1517         ShowWindow(pHHInfo->hwndSizeBar, SW_SHOW);
1518         r.left = r.left - nav.right;
1519
1520         SendMessageW(pHHInfo->WinType.hwndToolBar, TB_HIDEBUTTON, IDTB_EXPAND, MAKELPARAM(TRUE, 0));
1521         SendMessageW(pHHInfo->WinType.hwndToolBar, TB_HIDEBUTTON, IDTB_CONTRACT, MAKELPARAM(FALSE, 0));
1522     }
1523
1524     MoveWindow(pHHInfo->WinType.hwndHelp, r.left, r.top, r.right-r.left, r.bottom-r.top, TRUE);
1525 }
1526
1527 static LRESULT Help_OnSize(HWND hWnd)
1528 {
1529     HHInfo *pHHInfo = (HHInfo *)GetWindowLongPtrW(hWnd, 0);
1530     DWORD dwSize;
1531     RECT rc;
1532
1533     if (!pHHInfo)
1534         return 0;
1535
1536     if (!pHHInfo->WinType.fNotExpanded)
1537     {
1538         NP_GetNavigationRect(pHHInfo, &rc);
1539         SetWindowPos(pHHInfo->WinType.hwndNavigation, HWND_TOP, 0, 0,
1540                      rc.right, rc.bottom, SWP_NOMOVE);
1541
1542         SB_GetSizeBarRect(pHHInfo, &rc);
1543         SetWindowPos(pHHInfo->hwndSizeBar, HWND_TOP, rc.left, rc.top,
1544                      rc.right, rc.bottom, SWP_SHOWWINDOW);
1545
1546     }
1547
1548     HP_GetHTMLRect(pHHInfo, &rc);
1549     SetWindowPos(pHHInfo->WinType.hwndHTML, HWND_TOP, rc.left, rc.top,
1550                  rc.right, rc.bottom, SWP_SHOWWINDOW);
1551
1552     /* Resize browser window taking the frame size into account */
1553     dwSize = GetSystemMetrics(SM_CXFRAME);
1554     ResizeWebBrowser(pHHInfo, rc.right - dwSize, rc.bottom - dwSize);
1555
1556     return 0;
1557 }
1558
1559 static LRESULT CALLBACK Help_WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
1560 {
1561     switch (message)
1562     {
1563     case WM_COMMAND:
1564         if (HIWORD(wParam) == BN_CLICKED)
1565             TB_OnClick(hWnd, LOWORD(wParam));
1566         break;
1567     case WM_SIZE:
1568         return Help_OnSize(hWnd);
1569     case WM_CLOSE:
1570         ReleaseHelpViewer((HHInfo *)GetWindowLongPtrW(hWnd, 0));
1571         return 0;
1572     case WM_DESTROY:
1573         if(hh_process)
1574             PostQuitMessage(0);
1575         break;
1576
1577     default:
1578         return DefWindowProcW(hWnd, message, wParam, lParam);
1579     }
1580
1581     return 0;
1582 }
1583
1584 static BOOL HH_CreateHelpWindow(HHInfo *info)
1585 {
1586     HWND hWnd;
1587     RECT winPos = info->WinType.rcWindowPos;
1588     WNDCLASSEXW wcex;
1589     DWORD dwStyles, dwExStyles;
1590     DWORD x, y, width = 0, height = 0;
1591     LPCWSTR caption;
1592
1593     static const WCHAR windowClassW[] = {
1594         'H','H',' ', 'P','a','r','e','n','t',0
1595     };
1596
1597     wcex.cbSize         = sizeof(WNDCLASSEXW);
1598     wcex.style          = CS_HREDRAW | CS_VREDRAW;
1599     wcex.lpfnWndProc    = Help_WndProc;
1600     wcex.cbClsExtra     = 0;
1601     wcex.cbWndExtra     = sizeof(LONG_PTR);
1602     wcex.hInstance      = hhctrl_hinstance;
1603     wcex.hIcon          = LoadIconW(NULL, (LPCWSTR)IDI_APPLICATION);
1604     wcex.hCursor        = LoadCursorW(NULL, (LPCWSTR)IDC_ARROW);
1605     wcex.hbrBackground  = (HBRUSH)(COLOR_MENU + 1);
1606     wcex.lpszMenuName   = NULL;
1607     wcex.lpszClassName  = windowClassW;
1608     wcex.hIconSm        = LoadIconW(NULL, (LPCWSTR)IDI_APPLICATION);
1609
1610     RegisterClassExW(&wcex);
1611
1612     /* Read in window parameters if available */
1613     if (info->WinType.fsValidMembers & HHWIN_PARAM_STYLES)
1614         dwStyles = info->WinType.dwStyles | WS_OVERLAPPEDWINDOW;
1615     else
1616         dwStyles = WS_OVERLAPPEDWINDOW | WS_VISIBLE |
1617                    WS_CLIPSIBLINGS | WS_CLIPCHILDREN;
1618
1619     if (info->WinType.fsValidMembers & HHWIN_PARAM_EXSTYLES)
1620         dwExStyles = info->WinType.dwExStyles;
1621     else
1622         dwExStyles = WS_EX_LEFT | WS_EX_LTRREADING | WS_EX_APPWINDOW |
1623                      WS_EX_WINDOWEDGE | WS_EX_RIGHTSCROLLBAR;
1624
1625     if (info->WinType.fsValidMembers & HHWIN_PARAM_RECT)
1626     {
1627         x = winPos.left;
1628         y = winPos.top;
1629         width = winPos.right - x;
1630         height = winPos.bottom - y;
1631     }
1632     if (!width || !height)
1633     {
1634         x = WINTYPE_DEFAULT_X;
1635         y = WINTYPE_DEFAULT_Y;
1636         width = WINTYPE_DEFAULT_WIDTH;
1637         height = WINTYPE_DEFAULT_HEIGHT;
1638     }
1639
1640     if (info->WinType.fNotExpanded)
1641     {
1642         if (!(info->WinType.fsValidMembers & HHWIN_PARAM_NAV_WIDTH) &&
1643               info->WinType.iNavWidth == 0)
1644         {
1645             info->WinType.iNavWidth = WINTYPE_DEFAULT_NAVWIDTH;
1646         }
1647
1648         x += info->WinType.iNavWidth;
1649         width -= info->WinType.iNavWidth;
1650     }
1651
1652
1653     caption = info->WinType.pszCaption;
1654     if (!*caption) caption = info->pCHMInfo->defTitle;
1655
1656     hWnd = CreateWindowExW(dwExStyles, windowClassW, caption,
1657                            dwStyles, x, y, width, height, NULL, NULL, hhctrl_hinstance, NULL);
1658     if (!hWnd)
1659         return FALSE;
1660
1661     ShowWindow(hWnd, SW_SHOW);
1662     UpdateWindow(hWnd);
1663
1664     /* store the pointer to the HH info struct */
1665     SetWindowLongPtrW(hWnd, 0, (LONG_PTR)info);
1666
1667     info->WinType.hwndHelp = hWnd;
1668     return TRUE;
1669 }
1670
1671 static void HH_CreateFont(HHInfo *pHHInfo)
1672 {
1673     LOGFONTW lf;
1674
1675     GetObjectW(GetStockObject(DEFAULT_GUI_FONT), sizeof(LOGFONTW), &lf);
1676     lf.lfWeight = FW_NORMAL;
1677     lf.lfItalic = FALSE;
1678     lf.lfUnderline = FALSE;
1679
1680     pHHInfo->hFont = CreateFontIndirectW(&lf);
1681 }
1682
1683 static void HH_InitRequiredControls(DWORD dwControls)
1684 {
1685     INITCOMMONCONTROLSEX icex;
1686
1687     icex.dwSize = sizeof(INITCOMMONCONTROLSEX);
1688     icex.dwICC = dwControls;
1689     InitCommonControlsEx(&icex);
1690 }
1691
1692 /* Creates the whole package */
1693 static BOOL CreateViewer(HHInfo *pHHInfo)
1694 {
1695     HH_CreateFont(pHHInfo);
1696
1697     if (!HH_CreateHelpWindow(pHHInfo))
1698         return FALSE;
1699
1700     HH_InitRequiredControls(ICC_BAR_CLASSES);
1701
1702     if (!HH_AddToolbar(pHHInfo))
1703         return FALSE;
1704
1705     HH_RegisterChildWndClass(pHHInfo);
1706
1707     if (!HH_AddNavigationPane(pHHInfo))
1708         return FALSE;
1709
1710     HH_RegisterSizeBarClass(pHHInfo);
1711
1712     if (!HH_AddSizeBar(pHHInfo))
1713         return FALSE;
1714
1715     if (!HH_AddHTMLPane(pHHInfo))
1716         return FALSE;
1717
1718     if (!AddContentTab(pHHInfo))
1719         return FALSE;
1720
1721     if (!AddIndexTab(pHHInfo))
1722         return FALSE;
1723
1724     if (!AddIndexPopup(pHHInfo))
1725         return FALSE;
1726
1727     if (!AddSearchTab(pHHInfo))
1728         return FALSE;
1729
1730     InitContent(pHHInfo);
1731     InitIndex(pHHInfo);
1732
1733     return TRUE;
1734 }
1735
1736 void ReleaseHelpViewer(HHInfo *info)
1737 {
1738     TRACE("(%p)\n", info);
1739
1740     if (!info)
1741         return;
1742
1743     /* Free allocated strings */
1744     heap_free(info->pszType);
1745     heap_free(info->pszCaption);
1746     heap_free(info->pszToc);
1747     heap_free(info->pszIndex);
1748     heap_free(info->pszFile);
1749     heap_free(info->pszHome);
1750     heap_free(info->pszJump1);
1751     heap_free(info->pszJump2);
1752     heap_free(info->pszUrlJump1);
1753     heap_free(info->pszUrlJump2);
1754
1755     if (info->pCHMInfo)
1756         CloseCHM(info->pCHMInfo);
1757
1758     ReleaseWebBrowser(info);
1759     ReleaseContent(info);
1760     ReleaseIndex(info);
1761     ReleaseSearch(info);
1762
1763     if(info->contents.hImageList)
1764         ImageList_Destroy(info->contents.hImageList);
1765     if(info->WinType.hwndHelp)
1766         DestroyWindow(info->WinType.hwndHelp);
1767
1768     heap_free(info);
1769     OleUninitialize();
1770 }
1771
1772 HHInfo *CreateHelpViewer(LPCWSTR filename)
1773 {
1774     HHInfo *info = heap_alloc_zero(sizeof(HHInfo));
1775     int i;
1776
1777     /* Set the invalid tab ID (-1) as the default value for all
1778      * of the tabs, this matches a failed TCM_INSERTITEM call.
1779      */
1780     for(i=0;i<sizeof(info->tabs)/sizeof(HHTab);i++)
1781         info->tabs[i].id = -1;
1782
1783     OleInitialize(NULL);
1784
1785     info->pCHMInfo = OpenCHM(filename);
1786     if(!info->pCHMInfo) {
1787         ReleaseHelpViewer(info);
1788         return NULL;
1789     }
1790
1791     if (!LoadWinTypeFromCHM(info)) {
1792         ReleaseHelpViewer(info);
1793         return NULL;
1794     }
1795
1796     if(!CreateViewer(info)) {
1797         ReleaseHelpViewer(info);
1798         return NULL;
1799     }
1800
1801     return info;
1802 }
1803
1804 /*
1805  * Search the table of HTML entities and return the corresponding ANSI symbol.
1806  */
1807 static char find_html_symbol(const char *entity, int entity_len)
1808 {
1809     int max = sizeof(html_encoded_symbols)/sizeof(html_encoded_symbols[0])-1;
1810     int min = 0, dir;
1811
1812     while(min <= max)
1813     {
1814         int pos = (min+max)/2;
1815         const char *encoded_symbol = html_encoded_symbols[pos].html_code;
1816         dir = strncmp(encoded_symbol, entity, entity_len);
1817         if(dir == 0 && !encoded_symbol[entity_len]) return html_encoded_symbols[pos].ansi_symbol;
1818         if(dir < 0)
1819             min = pos+1;
1820         else
1821             max = pos-1;
1822     }
1823     return 0;
1824 }
1825
1826 /*
1827  * Decode a string containing HTML encoded characters into a unicode string.
1828  */
1829 WCHAR *decode_html(const char *html_fragment, int html_fragment_len, UINT code_page)
1830 {
1831     const char *h = html_fragment;
1832     char *amp, *sem, symbol, *tmp;
1833     int len, tmp_len = 0;
1834     WCHAR *unicode_text;
1835
1836     tmp = heap_alloc(html_fragment_len+1);
1837     while(1)
1838     {
1839         symbol = 0;
1840         amp = strchr(h, '&');
1841         if(!amp) break;
1842         len = amp-h;
1843         /* Copy the characters prior to the HTML encoded character */
1844         memcpy(&tmp[tmp_len], h, len);
1845         tmp_len += len;
1846         amp++; /* skip ampersand */
1847         sem = strchr(amp, ';');
1848         /* Require a semicolon after the ampersand */
1849         if(!sem)
1850         {
1851             h = amp;
1852             tmp[tmp_len++] = '&';
1853             continue;
1854         }
1855         /* Find the symbol either by using the ANSI character number (prefixed by the pound symbol)
1856          * or by searching the HTML entity table */
1857         len = sem-amp;
1858         if(amp[0] == '#')
1859         {
1860             char *endnum = NULL;
1861             int tmp;
1862
1863             tmp = (char) strtol(amp, &endnum, 10);
1864             if(endnum == sem)
1865                 symbol = tmp;
1866         }
1867         else
1868             symbol = find_html_symbol(amp, len);
1869         if(!symbol)
1870         {
1871             FIXME("Failed to translate HTML encoded character '&%.*s;'.\n", len, amp);
1872             h = amp;
1873             tmp[tmp_len++] = '&';
1874             continue;
1875         }
1876         /* Insert the new symbol */
1877         h = sem+1;
1878         tmp[tmp_len++] = symbol;
1879     }
1880     /* Convert any remaining characters */
1881     len = html_fragment_len-(h-html_fragment);
1882     memcpy(&tmp[tmp_len], h, len);
1883     tmp_len += len;
1884     tmp[tmp_len++] = 0; /* NULL-terminate the string */
1885
1886     len = MultiByteToWideChar(code_page, 0, tmp, tmp_len, NULL, 0);
1887     unicode_text = heap_alloc(len*sizeof(WCHAR));
1888     MultiByteToWideChar(code_page, 0, tmp, tmp_len, unicode_text, len);
1889     heap_free(tmp);
1890     return unicode_text;
1891 }