src/html/htmlwin.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        htmlwin.cpp
   3 // Purpose:     wxHtmlWindow class for parsing & displaying HTML (implementation)
   4 // Author:      Vaclav Slavik
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) 1999 Vaclav Slavik
   7 // Licence:     wxWindows Licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10
  11 #ifdef __GNUG__
  12 #pragma implementation "htmlwin.h"
  13 #pragma implementation "htmlproc.h"
  14 #endif
  15
  16 #include "wx/wxprec.h"
  17
  18 #include "wx/defs.h"
  19 #if wxUSE_HTML && wxUSE_STREAMS
  20
  21 #ifdef __BORLANDC__
  22 #pragma hdrstop
  23 #endif
  24
  25 #ifndef WXPRECOMP
  26     #include "wx/log.h"
  27     #include "wx/intl.h"
  28     #include "wx/dcclient.h"
  29     #include "wx/frame.h"
  30 #endif
  31
  32 #include "wx/html/htmlwin.h"
  33 #include "wx/html/htmlproc.h"
  34 #include "wx/list.h"
  35 #include "wx/clipbrd.h"
  36
  37 #include "wx/arrimpl.cpp"
  38 #include "wx/listimpl.cpp"
  39
  40 //-----------------------------------------------------------------------------
  41 // wxHtmlHistoryItem
  42 //-----------------------------------------------------------------------------
  43
  44 // item of history list
  45 class WXDLLEXPORT wxHtmlHistoryItem
  46 {
  47 public:
  48     wxHtmlHistoryItem(const wxString& p, const wxString& a) {m_Page = p, m_Anchor = a, m_Pos = 0;}
  49     int GetPos() const {return m_Pos;}
  50     void SetPos(int p) {m_Pos = p;}
  51     const wxString& GetPage() const {return m_Page;}
  52     const wxString& GetAnchor() const {return m_Anchor;}
  53
  54 private:
  55     wxString m_Page;
  56     wxString m_Anchor;
  57     int m_Pos;
  58 };
  59
  60
  61 //-----------------------------------------------------------------------------
  62 // our private arrays:
  63 //-----------------------------------------------------------------------------
  64
  65 WX_DECLARE_OBJARRAY(wxHtmlHistoryItem, wxHtmlHistoryArray);
  66 WX_DEFINE_OBJARRAY(wxHtmlHistoryArray);
  67
  68 WX_DECLARE_LIST(wxHtmlProcessor, wxHtmlProcessorList);
  69 WX_DEFINE_LIST(wxHtmlProcessorList);
  70
  71 //-----------------------------------------------------------------------------
  72 // wxHtmlWindow
  73 //-----------------------------------------------------------------------------
  74
  75
  76 void wxHtmlWindow::Init()
  77 {
  78     m_tmpMouseMoved = FALSE;
  79     m_tmpLastLink = NULL;
  80     m_tmpLastCell = NULL;
  81     m_tmpCanDrawLocks = 0;
  82     m_FS = new wxFileSystem();
  83     m_RelatedStatusBar = -1;
  84     m_RelatedFrame = NULL;
  85     m_TitleFormat = wxT("%s");
  86     m_OpenedPage = m_OpenedAnchor = m_OpenedPageTitle = wxEmptyString;
  87     m_Cell = NULL;
  88     m_Parser = new wxHtmlWinParser(this);
  89     m_Parser->SetFS(m_FS);
  90     m_HistoryPos = -1;
  91     m_HistoryOn = TRUE;
  92     m_History = new wxHtmlHistoryArray;
  93     m_Processors = NULL;
  94     m_Style = 0;
  95     SetBorders(10);
  96     m_selection = NULL;
  97     m_makingSelection = false;
  98 }
  99
 100 bool wxHtmlWindow::Create(wxWindow *parent, wxWindowID id,
 101                           const wxPoint& pos, const wxSize& size,
 102                           long style, const wxString& name)
 103 {
 104     if (!wxScrolledWindow::Create(parent, id, pos, size,
 105                                   style | wxVSCROLL | wxHSCROLL, name))
 106         return FALSE;
 107
 108     m_Style = style;
 109     SetPage(wxT("<html><body></body></html>"));
 110     return TRUE;
 111 }
 112
 113
 114 wxHtmlWindow::~wxHtmlWindow()
 115 {
 116     HistoryClear();
 117
 118     if (m_Cell) delete m_Cell;
 119
 120     delete m_Parser;
 121     delete m_FS;
 122     delete m_History;
 123     delete m_Processors;
 124 }
 125
 126
 127
 128 void wxHtmlWindow::SetRelatedFrame(wxFrame* frame, const wxString& format)
 129 {
 130     m_RelatedFrame = frame;
 131     m_TitleFormat = format;
 132 }
 133
 134
 135
 136 void wxHtmlWindow::SetRelatedStatusBar(int bar)
 137 {
 138     m_RelatedStatusBar = bar;
 139 }
 140
 141
 142
 143 void wxHtmlWindow::SetFonts(wxString normal_face, wxString fixed_face, const int *sizes)
 144 {
 145     wxString op = m_OpenedPage;
 146
 147     m_Parser->SetFonts(normal_face, fixed_face, sizes);
 148     // fonts changed => contents invalid, so reload the page:
 149     SetPage(wxT("<html><body></body></html>"));
 150     if (!op.IsEmpty()) LoadPage(op);
 151 }
 152
 153
 154
 155 bool wxHtmlWindow::SetPage(const wxString& source)
 156 {
 157     wxString newsrc(source);
 158
 159     wxDELETE(m_selection);
 160
 161     // pass HTML through registered processors:
 162     if (m_Processors || m_GlobalProcessors)
 163     {
 164         wxHtmlProcessorList::Node *nodeL, *nodeG;
 165         int prL, prG;
 166
 167         nodeL = (m_Processors) ? m_Processors->GetFirst() : NULL;
 168         nodeG = (m_GlobalProcessors) ? m_GlobalProcessors->GetFirst() : NULL;
 169
 170         // VS: there are two lists, global and local, both of them sorted by
 171         //     priority. Since we have to go through _both_ lists with
 172         //     decreasing priority, we "merge-sort" the lists on-line by
 173         //     processing that one of the two heads that has higher priority
 174         //     in every iteration
 175         while (nodeL || nodeG)
 176         {
 177             prL = (nodeL) ? nodeL->GetData()->GetPriority() : -1;
 178             prG = (nodeG) ? nodeG->GetData()->GetPriority() : -1;
 179             if (prL > prG)
 180             {
 181                 if (nodeL->GetData()->IsEnabled())
 182                     newsrc = nodeL->GetData()->Process(newsrc);
 183                 nodeL = nodeL->GetNext();
 184             }
 185             else // prL <= prG
 186             {
 187                 if (nodeG->GetData()->IsEnabled())
 188                     newsrc = nodeG->GetData()->Process(newsrc);
 189                 nodeG = nodeG->GetNext();
 190             }
 191         }
 192     }
 193
 194     // ...and run the parser on it:
 195     wxClientDC *dc = new wxClientDC(this);
 196     dc->SetMapMode(wxMM_TEXT);
 197     SetBackgroundColour(wxColour(0xFF, 0xFF, 0xFF));
 198     m_OpenedPage = m_OpenedAnchor = m_OpenedPageTitle = wxEmptyString;
 199     m_Parser->SetDC(dc);
 200     if (m_Cell)
 201     {
 202         delete m_Cell;
 203         m_Cell = NULL;
 204     }
 205     m_Cell = (wxHtmlContainerCell*) m_Parser->Parse(newsrc);
 206     delete dc;
 207     m_Cell->SetIndent(m_Borders, wxHTML_INDENT_ALL, wxHTML_UNITS_PIXELS);
 208     m_Cell->SetAlignHor(wxHTML_ALIGN_CENTER);
 209     CreateLayout();
 210     if (m_tmpCanDrawLocks == 0)
 211         Refresh();
 212     return TRUE;
 213 }
 214
 215 bool wxHtmlWindow::AppendToPage(const wxString& source)
 216 {
 217     return SetPage(*(GetParser()->GetSource()) + source);
 218 }
 219
 220 bool wxHtmlWindow::LoadPage(const wxString& location)
 221 {
 222     wxBusyCursor busyCursor;
 223
 224     wxFSFile *f;
 225     bool rt_val;
 226     bool needs_refresh = FALSE;
 227
 228     m_tmpCanDrawLocks++;
 229     if (m_HistoryOn && (m_HistoryPos != -1))
 230     {
 231         // store scroll position into history item:
 232         int x, y;
 233         GetViewStart(&x, &y);
 234         (*m_History)[m_HistoryPos].SetPos(y);
 235     }
 236
 237     if (location[0] == wxT('#'))
 238     {
 239         // local anchor:
 240         wxString anch = location.Mid(1) /*1 to end*/;
 241         m_tmpCanDrawLocks--;
 242         rt_val = ScrollToAnchor(anch);
 243         m_tmpCanDrawLocks++;
 244     }
 245     else if (location.Find(wxT('#')) != wxNOT_FOUND && location.BeforeFirst(wxT('#')) == m_OpenedPage)
 246     {
 247         wxString anch = location.AfterFirst(wxT('#'));
 248         m_tmpCanDrawLocks--;
 249         rt_val = ScrollToAnchor(anch);
 250         m_tmpCanDrawLocks++;
 251     }
 252     else if (location.Find(wxT('#')) != wxNOT_FOUND &&
 253              (m_FS->GetPath() + location.BeforeFirst(wxT('#'))) == m_OpenedPage)
 254     {
 255         wxString anch = location.AfterFirst(wxT('#'));
 256         m_tmpCanDrawLocks--;
 257         rt_val = ScrollToAnchor(anch);
 258         m_tmpCanDrawLocks++;
 259     }
 260
 261     else
 262     {
 263         needs_refresh = TRUE;
 264         // load&display it:
 265         if (m_RelatedStatusBar != -1)
 266         {
 267             m_RelatedFrame->SetStatusText(_("Connecting..."), m_RelatedStatusBar);
 268             Refresh(FALSE);
 269         }
 270
 271         f = m_Parser->OpenURL(wxHTML_URL_PAGE, location);
 272
 273         // try to interpret 'location' as filename instead of URL:
 274         if (f == NULL)
 275         {
 276             wxFileName fn(location);
 277             wxString location2 = wxFileSystem::FileNameToURL(fn);
 278             f = m_Parser->OpenURL(wxHTML_URL_PAGE, location2);
 279         }
 280
 281         if (f == NULL)
 282         {
 283             wxLogError(_("Unable to open requested HTML document: %s"), location.c_str());
 284             m_tmpCanDrawLocks--;
 285             return FALSE;
 286         }
 287
 288         else
 289         {
 290             wxNode *node;
 291             wxString src = wxEmptyString;
 292
 293             if (m_RelatedStatusBar != -1)
 294             {
 295                 wxString msg = _("Loading : ") + location;
 296                 m_RelatedFrame->SetStatusText(msg, m_RelatedStatusBar);
 297                 Refresh(FALSE);
 298             }
 299
 300             node = m_Filters.GetFirst();
 301             while (node)
 302             {
 303                 wxHtmlFilter *h = (wxHtmlFilter*) node->GetData();
 304                 if (h->CanRead(*f))
 305                 {
 306                     src = h->ReadFile(*f);
 307                     break;
 308                 }
 309                 node = node->GetNext();
 310             }
 311             if (src == wxEmptyString)
 312             {
 313                 if (m_DefaultFilter == NULL) m_DefaultFilter = GetDefaultFilter();
 314                 src = m_DefaultFilter->ReadFile(*f);
 315             }
 316
 317             m_FS->ChangePathTo(f->GetLocation());
 318             rt_val = SetPage(src);
 319             m_OpenedPage = f->GetLocation();
 320             if (f->GetAnchor() != wxEmptyString)
 321             {
 322                 ScrollToAnchor(f->GetAnchor());
 323             }
 324
 325             delete f;
 326
 327             if (m_RelatedStatusBar != -1) m_RelatedFrame->SetStatusText(_("Done"), m_RelatedStatusBar);
 328         }
 329     }
 330
 331     if (m_HistoryOn) // add this page to history there:
 332     {
 333         int c = m_History->GetCount() - (m_HistoryPos + 1);
 334
 335         if (m_HistoryPos < 0 ||
 336             (*m_History)[m_HistoryPos].GetPage() != m_OpenedPage ||
 337             (*m_History)[m_HistoryPos].GetAnchor() != m_OpenedAnchor)
 338         {
 339             m_HistoryPos++;
 340             for (int i = 0; i < c; i++)
 341                 m_History->RemoveAt(m_HistoryPos);
 342             m_History->Add(new wxHtmlHistoryItem(m_OpenedPage, m_OpenedAnchor));
 343         }
 344     }
 345
 346     if (m_OpenedPageTitle == wxEmptyString)
 347         OnSetTitle(wxFileNameFromPath(m_OpenedPage));
 348
 349     if (needs_refresh)
 350     {
 351         m_tmpCanDrawLocks--;
 352         Refresh();
 353     }
 354     else
 355         m_tmpCanDrawLocks--;
 356
 357     return rt_val;
 358 }
 359
 360
 361 bool wxHtmlWindow::LoadFile(const wxFileName& filename)
 362 {
 363     wxString url = wxFileSystem::FileNameToURL(filename);
 364     return LoadPage(url);
 365 }
 366
 367
 368 bool wxHtmlWindow::ScrollToAnchor(const wxString& anchor)
 369 {
 370     const wxHtmlCell *c = m_Cell->Find(wxHTML_COND_ISANCHOR, &anchor);
 371     if (!c)
 372     {
 373         wxLogWarning(_("HTML anchor %s does not exist."), anchor.c_str());
 374         return FALSE;
 375     }
 376     else
 377     {
 378         int y;
 379
 380         for (y = 0; c != NULL; c = c->GetParent()) y += c->GetPosY();
 381         Scroll(-1, y / wxHTML_SCROLL_STEP);
 382         m_OpenedAnchor = anchor;
 383         return TRUE;
 384     }
 385 }
 386
 387
 388 void wxHtmlWindow::OnSetTitle(const wxString& title)
 389 {
 390     if (m_RelatedFrame)
 391     {
 392         wxString tit;
 393         tit.Printf(m_TitleFormat, title.c_str());
 394         m_RelatedFrame->SetTitle(tit);
 395     }
 396     m_OpenedPageTitle = title;
 397 }
 398
 399
 400
 401
 402
 403 void wxHtmlWindow::CreateLayout()
 404 {
 405     int ClientWidth, ClientHeight;
 406
 407     if (!m_Cell) return;
 408
 409     if (m_Style & wxHW_SCROLLBAR_NEVER)
 410     {
 411         SetScrollbars(wxHTML_SCROLL_STEP, 1, m_Cell->GetWidth() / wxHTML_SCROLL_STEP, 0); // always off
 412         GetClientSize(&ClientWidth, &ClientHeight);
 413         m_Cell->Layout(ClientWidth);
 414     }
 415
 416     else {
 417         GetClientSize(&ClientWidth, &ClientHeight);
 418         m_Cell->Layout(ClientWidth);
 419         if (ClientHeight < m_Cell->GetHeight() + GetCharHeight())
 420         {
 421             SetScrollbars(
 422                   wxHTML_SCROLL_STEP, wxHTML_SCROLL_STEP,
 423                   m_Cell->GetWidth() / wxHTML_SCROLL_STEP,
 424                   (m_Cell->GetHeight() + GetCharHeight()) / wxHTML_SCROLL_STEP
 425                   /*cheat: top-level frag is always container*/);
 426         }
 427         else /* we fit into window, no need for scrollbars */
 428         {
 429             SetScrollbars(wxHTML_SCROLL_STEP, 1, m_Cell->GetWidth() / wxHTML_SCROLL_STEP, 0); // disable...
 430             GetClientSize(&ClientWidth, &ClientHeight);
 431             m_Cell->Layout(ClientWidth); // ...and relayout
 432         }
 433     }
 434 }
 435
 436
 437
 438 void wxHtmlWindow::ReadCustomization(wxConfigBase *cfg, wxString path)
 439 {
 440     wxString oldpath;
 441     wxString tmp;
 442     int p_fontsizes[7];
 443     wxString p_fff, p_ffn;
 444
 445     if (path != wxEmptyString)
 446     {
 447         oldpath = cfg->GetPath();
 448         cfg->SetPath(path);
 449     }
 450
 451     m_Borders = cfg->Read(wxT("wxHtmlWindow/Borders"), m_Borders);
 452     p_fff = cfg->Read(wxT("wxHtmlWindow/FontFaceFixed"), m_Parser->m_FontFaceFixed);
 453     p_ffn = cfg->Read(wxT("wxHtmlWindow/FontFaceNormal"), m_Parser->m_FontFaceNormal);
 454     for (int i = 0; i < 7; i++)
 455     {
 456         tmp.Printf(wxT("wxHtmlWindow/FontsSize%i"), i);
 457         p_fontsizes[i] = cfg->Read(tmp, m_Parser->m_FontsSizes[i]);
 458     }
 459     SetFonts(p_ffn, p_fff, p_fontsizes);
 460
 461     if (path != wxEmptyString)
 462         cfg->SetPath(oldpath);
 463 }
 464
 465
 466
 467 void wxHtmlWindow::WriteCustomization(wxConfigBase *cfg, wxString path)
 468 {
 469     wxString oldpath;
 470     wxString tmp;
 471
 472     if (path != wxEmptyString)
 473     {
 474         oldpath = cfg->GetPath();
 475         cfg->SetPath(path);
 476     }
 477
 478     cfg->Write(wxT("wxHtmlWindow/Borders"), (long) m_Borders);
 479     cfg->Write(wxT("wxHtmlWindow/FontFaceFixed"), m_Parser->m_FontFaceFixed);
 480     cfg->Write(wxT("wxHtmlWindow/FontFaceNormal"), m_Parser->m_FontFaceNormal);
 481     for (int i = 0; i < 7; i++)
 482     {
 483         tmp.Printf(wxT("wxHtmlWindow/FontsSize%i"), i);
 484         cfg->Write(tmp, (long) m_Parser->m_FontsSizes[i]);
 485     }
 486
 487     if (path != wxEmptyString)
 488         cfg->SetPath(oldpath);
 489 }
 490
 491
 492
 493 bool wxHtmlWindow::HistoryBack()
 494 {
 495     wxString a, l;
 496
 497     if (m_HistoryPos < 1) return FALSE;
 498
 499     // store scroll position into history item:
 500     int x, y;
 501     GetViewStart(&x, &y);
 502     (*m_History)[m_HistoryPos].SetPos(y);
 503
 504     // go to previous position:
 505     m_HistoryPos--;
 506
 507     l = (*m_History)[m_HistoryPos].GetPage();
 508     a = (*m_History)[m_HistoryPos].GetAnchor();
 509     m_HistoryOn = FALSE;
 510     m_tmpCanDrawLocks++;
 511     if (a == wxEmptyString) LoadPage(l);
 512     else LoadPage(l + wxT("#") + a);
 513     m_HistoryOn = TRUE;
 514     m_tmpCanDrawLocks--;
 515     Scroll(0, (*m_History)[m_HistoryPos].GetPos());
 516     Refresh();
 517     return TRUE;
 518 }
 519
 520 bool wxHtmlWindow::HistoryCanBack()
 521 {
 522     if (m_HistoryPos < 1) return FALSE;
 523     return TRUE ;
 524 }
 525
 526
 527 bool wxHtmlWindow::HistoryForward()
 528 {
 529     wxString a, l;
 530
 531     if (m_HistoryPos == -1) return FALSE;
 532     if (m_HistoryPos >= (int)m_History->GetCount() - 1)return FALSE;
 533
 534     m_OpenedPage = wxEmptyString; // this will disable adding new entry into history in LoadPage()
 535
 536     m_HistoryPos++;
 537     l = (*m_History)[m_HistoryPos].GetPage();
 538     a = (*m_History)[m_HistoryPos].GetAnchor();
 539     m_HistoryOn = FALSE;
 540     m_tmpCanDrawLocks++;
 541     if (a == wxEmptyString) LoadPage(l);
 542     else LoadPage(l + wxT("#") + a);
 543     m_HistoryOn = TRUE;
 544     m_tmpCanDrawLocks--;
 545     Scroll(0, (*m_History)[m_HistoryPos].GetPos());
 546     Refresh();
 547     return TRUE;
 548 }
 549
 550 bool wxHtmlWindow::HistoryCanForward()
 551 {
 552     if (m_HistoryPos == -1) return FALSE;
 553     if (m_HistoryPos >= (int)m_History->GetCount() - 1)return FALSE;
 554     return TRUE ;
 555 }
 556
 557
 558 void wxHtmlWindow::HistoryClear()
 559 {
 560     m_History->Empty();
 561     m_HistoryPos = -1;
 562 }
 563
 564 void wxHtmlWindow::AddProcessor(wxHtmlProcessor *processor)
 565 {
 566     if (!m_Processors)
 567     {
 568         m_Processors = new wxHtmlProcessorList;
 569         m_Processors->DeleteContents(TRUE);
 570     }
 571     wxHtmlProcessorList::Node *node;
 572
 573     for (node = m_Processors->GetFirst(); node; node = node->GetNext())
 574     {
 575         if (processor->GetPriority() > node->GetData()->GetPriority())
 576         {
 577             m_Processors->Insert(node, processor);
 578             return;
 579         }
 580     }
 581     m_Processors->Append(processor);
 582 }
 583
 584 /*static */ void wxHtmlWindow::AddGlobalProcessor(wxHtmlProcessor *processor)
 585 {
 586     if (!m_GlobalProcessors)
 587     {
 588         m_GlobalProcessors = new wxHtmlProcessorList;
 589         m_GlobalProcessors->DeleteContents(TRUE);
 590     }
 591     wxHtmlProcessorList::Node *node;
 592
 593     for (node = m_GlobalProcessors->GetFirst(); node; node = node->GetNext())
 594     {
 595         if (processor->GetPriority() > node->GetData()->GetPriority())
 596         {
 597             m_GlobalProcessors->Insert(node, processor);
 598             return;
 599         }
 600     }
 601     m_GlobalProcessors->Append(processor);
 602 }
 603
 604
 605
 606 wxList wxHtmlWindow::m_Filters;
 607 wxHtmlFilter *wxHtmlWindow::m_DefaultFilter = NULL;
 608 wxCursor *wxHtmlWindow::s_cur_hand = NULL;
 609 wxCursor *wxHtmlWindow::s_cur_arrow = NULL;
 610 wxHtmlProcessorList *wxHtmlWindow::m_GlobalProcessors = NULL;
 611
 612 void wxHtmlWindow::CleanUpStatics()
 613 {
 614     wxDELETE(m_DefaultFilter);
 615     m_Filters.DeleteContents(TRUE);
 616     m_Filters.Clear();
 617     wxDELETE(m_GlobalProcessors);
 618     wxDELETE(s_cur_hand);
 619     wxDELETE(s_cur_arrow);
 620 }
 621
 622
 623
 624 void wxHtmlWindow::AddFilter(wxHtmlFilter *filter)
 625 {
 626     m_Filters.Append(filter);
 627 }
 628
 629
 630 bool wxHtmlWindow::IsSelectionEnabled() const
 631 {
 632 #if wxUSE_CLIPBOARD
 633     return !(m_Style & wxHW_NO_SELECTION);
 634 #else
 635     return false;
 636 #endif
 637 }
 638
 639
 640 wxString wxHtmlWindow::SelectionToText()
 641 {
 642     if ( !m_selection )
 643         return wxEmptyString;
 644
 645     const wxHtmlCell *end = m_selection->GetToCell();
 646     wxString text;
 647     wxHtmlTerminalCellsInterator i(m_selection->GetFromCell(), end);
 648     if ( i )
 649     {
 650         text << i->ConvertToText(m_selection);
 651         ++i;
 652     }
 653     const wxHtmlCell *prev = *i;
 654     while ( i )
 655     {
 656         if ( prev->GetParent() != i->GetParent() )
 657             text << _T('\n');
 658         text << i->ConvertToText(*i == end ? m_selection : NULL);
 659         prev = *i;
 660         ++i;
 661     }
 662     return text;
 663 }
 664
 665 void wxHtmlWindow::CopySelection(ClipboardType t)
 666 {
 667 #if wxUSE_CLIPBOARD
 668     if ( m_selection )
 669     {
 670         wxTheClipboard->UsePrimarySelection(t == Primary);
 671         wxString txt(SelectionToText());
 672         if ( wxTheClipboard->Open() )
 673         {
 674             wxTheClipboard->SetData(new wxTextDataObject(txt));
 675             wxTheClipboard->Close();
 676             wxLogTrace(_T("wxhtmlselection"),
 677                        _("Copied to clipboard:\"%s\""), txt.c_str());
 678         }
 679     }
 680 #endif
 681 }
 682
 683
 684 void wxHtmlWindow::OnLinkClicked(const wxHtmlLinkInfo& link)
 685 {
 686     const wxMouseEvent *e = link.GetEvent();
 687     if (e == NULL || e->LeftUp())
 688         LoadPage(link.GetHref());
 689 }
 690
 691 void wxHtmlWindow::OnCellClicked(wxHtmlCell *cell,
 692                                  wxCoord x, wxCoord y,
 693                                  const wxMouseEvent& event)
 694 {
 695     wxCHECK_RET( cell, _T("can't be called with NULL cell") );
 696
 697     cell->OnMouseClick(this, x, y, event);
 698 }
 699
 700 void wxHtmlWindow::OnCellMouseHover(wxHtmlCell * WXUNUSED(cell),
 701                                     wxCoord WXUNUSED(x), wxCoord WXUNUSED(y))
 702 {
 703     // do nothing here
 704 }
 705
 706 void wxHtmlWindow::OnDraw(wxDC& dc)
 707 {
 708     if (m_tmpCanDrawLocks > 0 || m_Cell == NULL) return;
 709
 710     int x, y;
 711     wxRect rect = GetUpdateRegion().GetBox();
 712
 713     dc.SetMapMode(wxMM_TEXT);
 714     dc.SetBackgroundMode(wxTRANSPARENT);
 715     GetViewStart(&x, &y);
 716
 717     wxHtmlRenderingState rstate(m_selection);
 718     m_Cell->Draw(dc, 0, 0,
 719                  y * wxHTML_SCROLL_STEP + rect.GetTop(),
 720                  y * wxHTML_SCROLL_STEP + rect.GetBottom(),
 721                  rstate);
 722 }
 723
 724
 725
 726
 727 void wxHtmlWindow::OnSize(wxSizeEvent& event)
 728 {
 729     wxScrolledWindow::OnSize(event);
 730     CreateLayout();
 731     Refresh();
 732 }
 733
 734
 735 void wxHtmlWindow::OnMouseMove(wxMouseEvent& event)
 736 {
 737     m_tmpMouseMoved = true;
 738 }
 739
 740 void wxHtmlWindow::OnMouseDown(wxMouseEvent& event)
 741 {
 742     if ( event.LeftDown() && IsSelectionEnabled() )
 743     {
 744         m_makingSelection = true;
 745
 746         if ( m_selection )
 747         {
 748             wxDELETE(m_selection);
 749             Refresh();
 750         }
 751         m_tmpSelFromPos = CalcUnscrolledPosition(event.GetPosition());
 752         m_tmpSelFromCell = NULL;
 753
 754         CaptureMouse();
 755     }
 756 }
 757
 758 void wxHtmlWindow::OnMouseUp(wxMouseEvent& event)
 759 {
 760     if ( m_makingSelection )
 761     {
 762         ReleaseMouse();
 763         m_makingSelection = false;
 764
 765         // did the user move the mouse far enough from starting point?
 766         if ( m_selection )
 767         {
 768             // we don't want mouse up event that ended selecting to be
 769             // handled as mouse click and e.g. follow hyperlink:
 770             return;
 771         }
 772     }
 773
 774     SetFocus();
 775     if ( m_Cell )
 776     {
 777         wxPoint pos = CalcUnscrolledPosition(event.GetPosition());
 778         wxHtmlCell *cell = m_Cell->FindCellByPos(pos.x, pos.y);
 779
 780         // VZ: is it possible that we don't find anything at all?
 781         // VS: yes. FindCellByPos returns terminal cell and
 782         //     containers may have empty borders
 783         if ( cell )
 784             OnCellClicked(cell, pos.x, pos.y, event);
 785     }
 786 }
 787
 788
 789
 790 void wxHtmlWindow::OnIdle(wxIdleEvent& WXUNUSED(event))
 791 {
 792     if (s_cur_hand == NULL)
 793     {
 794         s_cur_hand = new wxCursor(wxCURSOR_HAND);
 795         s_cur_arrow = new wxCursor(wxCURSOR_ARROW);
 796     }
 797
 798     if (m_tmpMouseMoved && (m_Cell != NULL))
 799     {
 800         int xc, yc, x, y;
 801         wxGetMousePosition(&xc, &yc);
 802         ScreenToClient(&xc, &yc);
 803         CalcUnscrolledPosition(xc, yc, &x, &y);
 804
 805         wxHtmlCell *cell = m_Cell->FindCellByPos(x, y);
 806
 807         // handle selection update:
 808         if ( m_makingSelection )
 809         {
 810             bool goingDown = m_tmpSelFromPos.y < y ||
 811                              m_tmpSelFromPos.y == y && m_tmpSelFromPos.x < x;
 812
 813             if ( !m_tmpSelFromCell )
 814             {
 815                 if (goingDown)
 816                 {
 817                     m_tmpSelFromCell = m_Cell->FindCellByPos(x, y,
 818                                                  wxHTML_FIND_NEAREST_AFTER);
 819                     if (!m_tmpSelFromCell)
 820                         m_tmpSelFromCell = m_Cell->GetFirstTerminal();
 821                 }
 822                 else
 823                 {
 824                     m_tmpSelFromCell = m_Cell->FindCellByPos(x, y,
 825                                                  wxHTML_FIND_NEAREST_BEFORE);
 826                     if (!m_tmpSelFromCell)
 827                         m_tmpSelFromCell = m_Cell->GetLastTerminal();
 828                 }
 829             }
 830
 831             wxHtmlCell *selcell = cell;
 832             if (!selcell)
 833             {
 834                 if (goingDown)
 835                 {
 836                     selcell = m_Cell->FindCellByPos(x, y,
 837                                                  wxHTML_FIND_NEAREST_AFTER);
 838                     if (!selcell)
 839                         selcell = m_Cell->GetLastTerminal();
 840                 }
 841                 else
 842                 {
 843                     selcell = m_Cell->FindCellByPos(x, y,
 844                                                  wxHTML_FIND_NEAREST_BEFORE);
 845                     if (!selcell)
 846                         selcell = m_Cell->GetFirstTerminal();
 847                 }
 848             }
 849
 850             // NB: it may *rarely* happen that the code above didn't find one
 851             //     of the cells, e.g. if wxHtmlWindow doesn't contain any
 852             //     visible cells.
 853             if ( selcell && m_tmpSelFromCell )
 854             {
 855                 if ( !m_selection )
 856                 {
 857                     // start selecting only if mouse movement was big enough
 858                     // (otherwise it was meant as mouse click, not selection):
 859                     const int PRECISION = 2;
 860                     wxPoint diff = m_tmpSelFromPos - wxPoint(x,y);
 861                     if (abs(diff.x) > PRECISION || abs(diff.y) > PRECISION)
 862                     {
 863                         m_selection = new wxHtmlSelection();
 864                     }
 865                 }
 866                 if ( m_selection )
 867                 {
 868                     if ( m_tmpSelFromCell->IsBefore(selcell) )
 869                     {
 870                         m_selection->Set(m_tmpSelFromPos, m_tmpSelFromCell,
 871                                          wxPoint(x,y), selcell);
 872                     }
 873                     else
 874                     {
 875                         m_selection->Set(wxPoint(x,y), selcell,
 876                                          m_tmpSelFromPos, m_tmpSelFromCell);
 877                     }
 878                     Refresh(); // FIXME - optimize!
 879 #ifdef __UNIX__
 880                     CopySelection(Primary);
 881 #endif
 882                 }
 883             }
 884         }
 885
 886         // handle cursor and status bar text changes:
 887         if ( cell != m_tmpLastCell )
 888         {
 889             wxHtmlLinkInfo *lnk = cell ? cell->GetLink(x, y) : NULL;
 890
 891             if (lnk != m_tmpLastLink)
 892             {
 893                 if (lnk == NULL)
 894                 {
 895                     SetCursor(*s_cur_arrow);
 896                     if (m_RelatedStatusBar != -1)
 897                         m_RelatedFrame->SetStatusText(wxEmptyString, m_RelatedStatusBar);
 898                 }
 899                 else
 900                 {
 901                     SetCursor(*s_cur_hand);
 902                     if (m_RelatedStatusBar != -1)
 903                         m_RelatedFrame->SetStatusText(lnk->GetHref(), m_RelatedStatusBar);
 904                 }
 905                 m_tmpLastLink = lnk;
 906             }
 907
 908             m_tmpLastCell = cell;
 909         }
 910         else // mouse moved but stayed in the same cell
 911         {
 912             if ( cell )
 913                 OnCellMouseHover(cell, x, y);
 914         }
 915
 916         m_tmpMouseMoved = FALSE;
 917     }
 918 }
 919
 920 #if wxUSE_CLIPBOARD
 921 void wxHtmlWindow::OnKeyUp(wxKeyEvent& event)
 922 {
 923     if ( event.GetKeyCode() == 'C' && event.ControlDown() )
 924     {
 925         if ( m_selection )
 926             CopySelection();
 927     }
 928     else
 929         event.Skip();
 930 }
 931
 932 void wxHtmlWindow::OnCopy(wxCommandEvent& event)
 933 {
 934     if ( m_selection )
 935         CopySelection();
 936 }
 937 #endif
 938
 939
 940
 941 IMPLEMENT_ABSTRACT_CLASS(wxHtmlProcessor,wxObject)
 942
 943 IMPLEMENT_DYNAMIC_CLASS(wxHtmlWindow,wxScrolledWindow)
 944
 945 BEGIN_EVENT_TABLE(wxHtmlWindow, wxScrolledWindow)
 946     EVT_SIZE(wxHtmlWindow::OnSize)
 947     EVT_LEFT_DOWN(wxHtmlWindow::OnMouseDown)
 948     EVT_LEFT_UP(wxHtmlWindow::OnMouseUp)
 949     EVT_RIGHT_UP(wxHtmlWindow::OnMouseUp)
 950     EVT_MOTION(wxHtmlWindow::OnMouseMove)
 951     EVT_IDLE(wxHtmlWindow::OnIdle)
 952 #if wxUSE_CLIPBOARD
 953     EVT_KEY_UP(wxHtmlWindow::OnKeyUp)
 954     EVT_MENU(wxID_COPY, wxHtmlWindow::OnCopy)
 955 #endif
 956 END_EVENT_TABLE()
 957
 958
 959
 960
 961
 962 // A module to allow initialization/cleanup
 963 // without calling these functions from app.cpp or from
 964 // the user's application.
 965
 966 class wxHtmlWinModule: public wxModule
 967 {
 968 DECLARE_DYNAMIC_CLASS(wxHtmlWinModule)
 969 public:
 970     wxHtmlWinModule() : wxModule() {}
 971     bool OnInit() { return TRUE; }
 972     void OnExit() { wxHtmlWindow::CleanUpStatics(); }
 973 };
 974
 975 IMPLEMENT_DYNAMIC_CLASS(wxHtmlWinModule, wxModule)
 976
 977
 978 // This hack forces the linker to always link in m_* files
 979 // (wxHTML doesn't work without handlers from these files)
 980 #include "wx/html/forcelnk.h"
 981 FORCE_WXHTML_MODULES()
 982
 983 #endif