src/richtext/richtextctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/richtext/richtextctrl.cpp
   3 // Purpose:     A rich edit control
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     2005-09-30
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __BORLANDC__
  16     #pragma hdrstop
  17 #endif
  18
  19 #if wxUSE_RICHTEXT
  20
  21 #include "wx/richtext/richtextctrl.h"
  22 #include "wx/richtext/richtextstyles.h"
  23
  24 #ifndef WX_PRECOMP
  25     #include "wx/wx.h"
  26     #include "wx/settings.h"
  27 #endif
  28
  29 #include "wx/timer.h"
  30 #include "wx/textfile.h"
  31 #include "wx/ffile.h"
  32 #include "wx/filename.h"
  33 #include "wx/dcbuffer.h"
  34 #include "wx/arrimpl.cpp"
  35 #include "wx/fontenum.h"
  36 #include "wx/accel.h"
  37
  38 #if defined (__WXGTK__) || defined(__WXX11__) || defined(__WXMOTIF__)
  39 #define wxHAVE_PRIMARY_SELECTION 1
  40 #else
  41 #define wxHAVE_PRIMARY_SELECTION 0
  42 #endif
  43
  44 #if wxUSE_CLIPBOARD && wxHAVE_PRIMARY_SELECTION
  45 #include "wx/clipbrd.h"
  46 #endif
  47
  48 // DLL options compatibility check:
  49 #include "wx/app.h"
  50 WX_CHECK_BUILD_OPTIONS("wxRichTextCtrl")
  51
  52 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_LEFT_CLICK, wxRichTextEvent );
  53 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_MIDDLE_CLICK, wxRichTextEvent );
  54 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_RIGHT_CLICK, wxRichTextEvent );
  55 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_LEFT_DCLICK, wxRichTextEvent );
  56 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_RETURN, wxRichTextEvent );
  57 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_CHARACTER, wxRichTextEvent );
  58 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_DELETE, wxRichTextEvent );
  59
  60 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_STYLESHEET_REPLACING, wxRichTextEvent );
  61 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_STYLESHEET_REPLACED, wxRichTextEvent );
  62 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_STYLESHEET_CHANGING, wxRichTextEvent );
  63 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_STYLESHEET_CHANGED, wxRichTextEvent );
  64
  65 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_CONTENT_INSERTED, wxRichTextEvent );
  66 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_CONTENT_DELETED, wxRichTextEvent );
  67 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_STYLE_CHANGED, wxRichTextEvent );
  68 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_SELECTION_CHANGED, wxRichTextEvent );
  69 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_BUFFER_RESET, wxRichTextEvent );
  70 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_FOCUS_OBJECT_CHANGED, wxRichTextEvent );
  71
  72 #if wxRICHTEXT_USE_OWN_CARET
  73
  74 /*!
  75  * wxRichTextCaret
  76  *
  77  * This implements a non-flashing cursor in case there
  78  * are platform-specific problems with the generic caret.
  79  * wxRICHTEXT_USE_OWN_CARET is set in richtextbuffer.h.
  80  */
  81
  82 class wxRichTextCaret;
  83 class wxRichTextCaretTimer: public wxTimer
  84 {
  85   public:
  86     wxRichTextCaretTimer(wxRichTextCaret* caret)
  87     {
  88         m_caret = caret;
  89     }
  90     virtual void Notify();
  91     wxRichTextCaret* m_caret;
  92 };
  93
  94 class wxRichTextCaret: public wxCaret
  95 {
  96 public:
  97     // ctors
  98     // -----
  99         // default - use Create()
 100     wxRichTextCaret(): m_timer(this)  { Init(); }
 101         // creates a block caret associated with the given window
 102     wxRichTextCaret(wxRichTextCtrl *window, int width, int height)
 103         : wxCaret(window, width, height), m_timer(this) { Init(); m_richTextCtrl = window; }
 104     wxRichTextCaret(wxRichTextCtrl *window, const wxSize& size)
 105         : wxCaret(window, size), m_timer(this) { Init(); m_richTextCtrl = window; }
 106
 107     virtual ~wxRichTextCaret();
 108
 109     // implementation
 110     // --------------
 111
 112     // called by wxWindow (not using the event tables)
 113     virtual void OnSetFocus();
 114     virtual void OnKillFocus();
 115
 116     // draw the caret on the given DC
 117     void DoDraw(wxDC *dc);
 118
 119     // get the visible count
 120     int GetVisibleCount() const { return m_countVisible; }
 121
 122     // delay repositioning
 123     bool GetNeedsUpdate() const { return m_needsUpdate; }
 124     void SetNeedsUpdate(bool needsUpdate = true ) { m_needsUpdate = needsUpdate; }
 125
 126     void Notify();
 127
 128     bool GetRefreshEnabled() const { return m_refreshEnabled; }
 129     void EnableRefresh(bool b) { m_refreshEnabled = b; }
 130
 131 protected:
 132     virtual void DoShow();
 133     virtual void DoHide();
 134     virtual void DoMove();
 135     virtual void DoSize();
 136
 137     // refresh the caret
 138     void Refresh();
 139
 140 private:
 141     void Init();
 142
 143     int           m_xOld,
 144                   m_yOld;
 145     bool          m_hasFocus;       // true => our window has focus
 146     bool          m_needsUpdate;    // must be repositioned
 147     bool          m_flashOn;
 148     wxRichTextCaretTimer m_timer;
 149     wxRichTextCtrl* m_richTextCtrl;
 150     bool          m_refreshEnabled;
 151 };
 152 #endif
 153
 154 IMPLEMENT_DYNAMIC_CLASS( wxRichTextCtrl, wxControl )
 155
 156 IMPLEMENT_DYNAMIC_CLASS( wxRichTextEvent, wxNotifyEvent )
 157
 158 BEGIN_EVENT_TABLE( wxRichTextCtrl, wxControl )
 159     EVT_PAINT(wxRichTextCtrl::OnPaint)
 160     EVT_ERASE_BACKGROUND(wxRichTextCtrl::OnEraseBackground)
 161     EVT_IDLE(wxRichTextCtrl::OnIdle)
 162     EVT_SCROLLWIN(wxRichTextCtrl::OnScroll)
 163     EVT_LEFT_DOWN(wxRichTextCtrl::OnLeftClick)
 164     EVT_MOTION(wxRichTextCtrl::OnMoveMouse)
 165     EVT_LEFT_UP(wxRichTextCtrl::OnLeftUp)
 166     EVT_RIGHT_DOWN(wxRichTextCtrl::OnRightClick)
 167     EVT_MIDDLE_DOWN(wxRichTextCtrl::OnMiddleClick)
 168     EVT_LEFT_DCLICK(wxRichTextCtrl::OnLeftDClick)
 169     EVT_CHAR(wxRichTextCtrl::OnChar)
 170     EVT_KEY_DOWN(wxRichTextCtrl::OnChar)
 171     EVT_SIZE(wxRichTextCtrl::OnSize)
 172     EVT_SET_FOCUS(wxRichTextCtrl::OnSetFocus)
 173     EVT_KILL_FOCUS(wxRichTextCtrl::OnKillFocus)
 174     EVT_MOUSE_CAPTURE_LOST(wxRichTextCtrl::OnCaptureLost)
 175     EVT_CONTEXT_MENU(wxRichTextCtrl::OnContextMenu)
 176     EVT_SYS_COLOUR_CHANGED(wxRichTextCtrl::OnSysColourChanged)
 177
 178     EVT_MENU(wxID_UNDO, wxRichTextCtrl::OnUndo)
 179     EVT_UPDATE_UI(wxID_UNDO, wxRichTextCtrl::OnUpdateUndo)
 180
 181     EVT_MENU(wxID_REDO, wxRichTextCtrl::OnRedo)
 182     EVT_UPDATE_UI(wxID_REDO, wxRichTextCtrl::OnUpdateRedo)
 183
 184     EVT_MENU(wxID_COPY, wxRichTextCtrl::OnCopy)
 185     EVT_UPDATE_UI(wxID_COPY, wxRichTextCtrl::OnUpdateCopy)
 186
 187     EVT_MENU(wxID_PASTE, wxRichTextCtrl::OnPaste)
 188     EVT_UPDATE_UI(wxID_PASTE, wxRichTextCtrl::OnUpdatePaste)
 189
 190     EVT_MENU(wxID_CUT, wxRichTextCtrl::OnCut)
 191     EVT_UPDATE_UI(wxID_CUT, wxRichTextCtrl::OnUpdateCut)
 192
 193     EVT_MENU(wxID_CLEAR, wxRichTextCtrl::OnClear)
 194     EVT_UPDATE_UI(wxID_CLEAR, wxRichTextCtrl::OnUpdateClear)
 195
 196     EVT_MENU(wxID_SELECTALL, wxRichTextCtrl::OnSelectAll)
 197     EVT_UPDATE_UI(wxID_SELECTALL, wxRichTextCtrl::OnUpdateSelectAll)
 198
 199     EVT_MENU(wxID_RICHTEXT_PROPERTIES1, wxRichTextCtrl::OnProperties)
 200     EVT_UPDATE_UI(wxID_RICHTEXT_PROPERTIES1, wxRichTextCtrl::OnUpdateProperties)
 201
 202     EVT_MENU(wxID_RICHTEXT_PROPERTIES2, wxRichTextCtrl::OnProperties)
 203     EVT_UPDATE_UI(wxID_RICHTEXT_PROPERTIES2, wxRichTextCtrl::OnUpdateProperties)
 204
 205     EVT_MENU(wxID_RICHTEXT_PROPERTIES3, wxRichTextCtrl::OnProperties)
 206     EVT_UPDATE_UI(wxID_RICHTEXT_PROPERTIES3, wxRichTextCtrl::OnUpdateProperties)
 207
 208 END_EVENT_TABLE()
 209
 210 /*!
 211  * wxRichTextCtrl
 212  */
 213
 214 wxArrayString wxRichTextCtrl::sm_availableFontNames;
 215
 216 wxRichTextCtrl::wxRichTextCtrl()
 217               : wxScrollHelper(this)
 218 {
 219     Init();
 220 }
 221
 222 wxRichTextCtrl::wxRichTextCtrl(wxWindow* parent,
 223                                wxWindowID id,
 224                                const wxString& value,
 225                                const wxPoint& pos,
 226                                const wxSize& size,
 227                                long style,
 228                                const wxValidator& validator,
 229                                const wxString& name)
 230               : wxScrollHelper(this)
 231 {
 232     Init();
 233     Create(parent, id, value, pos, size, style, validator, name);
 234
 235 #if wxUSE_DRAG_AND_DROP
 236     SetDropTarget(new wxRichTextDropTarget(this));
 237 #endif
 238 }
 239
 240 /// Creation
 241 bool wxRichTextCtrl::Create( wxWindow* parent, wxWindowID id, const wxString& value, const wxPoint& pos, const wxSize& size, long style,
 242                              const wxValidator& validator, const wxString& name)
 243 {
 244     style |= wxVSCROLL;
 245
 246     if (!wxControl::Create(parent, id, pos, size,
 247                            style|wxFULL_REPAINT_ON_RESIZE,
 248                            validator, name))
 249         return false;
 250
 251     if (!GetFont().IsOk())
 252     {
 253         SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
 254     }
 255
 256     // No physical scrolling, so we can preserve margins
 257     EnableScrolling(false, false);
 258
 259     if (style & wxTE_READONLY)
 260         SetEditable(false);
 261
 262     // The base attributes must all have default values
 263     wxRichTextAttr attributes;
 264     attributes.SetFont(GetFont());
 265     attributes.SetTextColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT));
 266     attributes.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
 267     attributes.SetLineSpacing(10);
 268     attributes.SetParagraphSpacingAfter(10);
 269     attributes.SetParagraphSpacingBefore(0);
 270
 271     SetBasicStyle(attributes);
 272
 273     int margin = 5;
 274     SetMargins(margin, margin);
 275
 276     // The default attributes will be merged with base attributes, so
 277     // can be empty to begin with
 278     wxRichTextAttr defaultAttributes;
 279     SetDefaultStyle(defaultAttributes);
 280
 281     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
 282     SetBackgroundStyle(wxBG_STYLE_CUSTOM);
 283
 284     GetBuffer().Reset();
 285     GetBuffer().SetRichTextCtrl(this);
 286
 287 #if wxRICHTEXT_USE_OWN_CARET
 288     SetCaret(new wxRichTextCaret(this, wxRICHTEXT_DEFAULT_CARET_WIDTH, 16));
 289 #else
 290     SetCaret(new wxCaret(this, wxRICHTEXT_DEFAULT_CARET_WIDTH, 16));
 291 #endif
 292
 293     // Tell the sizers to use the given or best size
 294     SetInitialSize(size);
 295
 296 #if wxRICHTEXT_BUFFERED_PAINTING
 297     // Create a buffer
 298     RecreateBuffer(size);
 299 #endif
 300
 301     m_textCursor = wxCursor(wxCURSOR_IBEAM);
 302     m_urlCursor = wxCursor(wxCURSOR_HAND);
 303
 304     SetCursor(m_textCursor);
 305
 306     if (!value.IsEmpty())
 307         SetValue(value);
 308
 309     GetBuffer().AddEventHandler(this);
 310
 311     // Accelerators
 312     wxAcceleratorEntry entries[6];
 313
 314     entries[0].Set(wxACCEL_CTRL,   (int) 'C',       wxID_COPY);
 315     entries[1].Set(wxACCEL_CTRL,   (int) 'X',       wxID_CUT);
 316     entries[2].Set(wxACCEL_CTRL,   (int) 'V',       wxID_PASTE);
 317     entries[3].Set(wxACCEL_CTRL,   (int) 'A',       wxID_SELECTALL);
 318     entries[4].Set(wxACCEL_CTRL,   (int) 'Z',       wxID_UNDO);
 319     entries[5].Set(wxACCEL_CTRL,   (int) 'Y',       wxID_REDO);
 320
 321     wxAcceleratorTable accel(6, entries);
 322     SetAcceleratorTable(accel);
 323
 324     m_contextMenu = new wxMenu;
 325     m_contextMenu->Append(wxID_UNDO, _("&Undo"));
 326     m_contextMenu->Append(wxID_REDO, _("&Redo"));
 327     m_contextMenu->AppendSeparator();
 328     m_contextMenu->Append(wxID_CUT, _("Cu&t"));
 329     m_contextMenu->Append(wxID_COPY, _("&Copy"));
 330     m_contextMenu->Append(wxID_PASTE, _("&Paste"));
 331     m_contextMenu->Append(wxID_CLEAR, _("&Delete"));
 332     m_contextMenu->AppendSeparator();
 333     m_contextMenu->Append(wxID_SELECTALL, _("Select &All"));
 334     m_contextMenu->AppendSeparator();
 335     m_contextMenu->Append(wxID_RICHTEXT_PROPERTIES1, _("&Properties"));
 336
 337     return true;
 338 }
 339
 340 wxRichTextCtrl::~wxRichTextCtrl()
 341 {
 342     SetFocusObject(& GetBuffer(), false);
 343     GetBuffer().RemoveEventHandler(this);
 344
 345     delete m_contextMenu;
 346 }
 347
 348 /// Member initialisation
 349 void wxRichTextCtrl::Init()
 350 {
 351     m_contextMenu = NULL;
 352     m_caret = NULL;
 353     m_caretPosition = -1;
 354     m_selectionAnchor = -2;
 355     m_selectionAnchorObject = NULL;
 356     m_selectionState = wxRichTextCtrlSelectionState_Normal;
 357     m_editable = true;
 358     m_caretAtLineStart = false;
 359     m_dragging = false;
 360 #if wxUSE_DRAG_AND_DROP
 361     m_preDrag = false;
 362 #endif
 363     m_fullLayoutRequired = false;
 364     m_fullLayoutTime = 0;
 365     m_fullLayoutSavedPosition = 0;
 366     m_delayedLayoutThreshold = wxRICHTEXT_DEFAULT_DELAYED_LAYOUT_THRESHOLD;
 367     m_caretPositionForDefaultStyle = -2;
 368     m_focusObject = & m_buffer;
 369 }
 370
 371 void wxRichTextCtrl::DoThaw()
 372 {
 373     if (GetBuffer().IsDirty())
 374         LayoutContent();
 375     else
 376         SetupScrollbars();
 377
 378     wxWindow::DoThaw();
 379 }
 380
 381 /// Clear all text
 382 void wxRichTextCtrl::Clear()
 383 {
 384     if (GetFocusObject() == & GetBuffer())
 385     {
 386         m_buffer.ResetAndClearCommands();
 387         m_buffer.Invalidate(wxRICHTEXT_ALL);
 388     }
 389     else
 390     {
 391         GetFocusObject()->Reset();
 392     }
 393
 394     m_caretPosition = -1;
 395     m_caretPositionForDefaultStyle = -2;
 396     m_caretAtLineStart = false;
 397     m_selection.Reset();
 398     m_selectionState = wxRichTextCtrlSelectionState_Normal;
 399
 400     Scroll(0,0);
 401
 402     if (!IsFrozen())
 403     {
 404         LayoutContent();
 405         Refresh(false);
 406     }
 407
 408     wxTextCtrl::SendTextUpdatedEvent(this);
 409 }
 410
 411 /// Painting
 412 void wxRichTextCtrl::OnPaint(wxPaintEvent& WXUNUSED(event))
 413 {
 414 #if !wxRICHTEXT_USE_OWN_CARET
 415     if (GetCaret() && !IsFrozen())
 416         GetCaret()->Hide();
 417 #else
 418     // Stop the caret refreshing the control from within the
 419     // paint handler
 420     if (GetCaret())
 421         ((wxRichTextCaret*) GetCaret())->EnableRefresh(false);
 422 #endif
 423
 424     {
 425 #if wxRICHTEXT_BUFFERED_PAINTING
 426         wxBufferedPaintDC dc(this, m_bufferBitmap);
 427 #else
 428         wxPaintDC dc(this);
 429 #endif
 430
 431         if (IsFrozen())
 432             return;
 433
 434         PrepareDC(dc);
 435
 436         dc.SetFont(GetFont());
 437
 438         // Paint the background
 439         PaintBackground(dc);
 440
 441         // wxRect drawingArea(GetLogicalPoint(wxPoint(0, 0)), GetClientSize());
 442
 443         wxRect drawingArea(GetUpdateRegion().GetBox());
 444         drawingArea.SetPosition(GetLogicalPoint(drawingArea.GetPosition()));
 445
 446         wxRect availableSpace(GetClientSize());
 447         if (GetBuffer().IsDirty())
 448         {
 449             GetBuffer().Layout(dc, availableSpace, availableSpace, wxRICHTEXT_FIXED_WIDTH|wxRICHTEXT_VARIABLE_HEIGHT);
 450             GetBuffer().Invalidate(wxRICHTEXT_NONE);
 451             SetupScrollbars();
 452         }
 453
 454         wxRect clipRect(availableSpace);
 455         clipRect.x += GetBuffer().GetLeftMargin();
 456         clipRect.y += GetBuffer().GetTopMargin();
 457         clipRect.width -= (GetBuffer().GetLeftMargin() + GetBuffer().GetRightMargin());
 458         clipRect.height -= (GetBuffer().GetTopMargin() + GetBuffer().GetBottomMargin());
 459         clipRect.SetPosition(GetLogicalPoint(clipRect.GetPosition()));
 460         dc.SetClippingRegion(clipRect);
 461
 462         int flags = 0;
 463         if ((GetExtraStyle() & wxRICHTEXT_EX_NO_GUIDELINES) == 0)
 464             flags |= wxRICHTEXT_DRAW_GUIDELINES;
 465
 466         GetBuffer().Draw(dc, GetBuffer().GetOwnRange(), GetSelection(), drawingArea, 0 /* descent */, flags);
 467
 468         dc.DestroyClippingRegion();
 469
 470         // Other user defined painting after everything else (i.e. all text) is painted
 471         PaintAboveContent(dc);
 472
 473 #if wxRICHTEXT_USE_OWN_CARET
 474         if (GetCaret()->IsVisible())
 475         {
 476             PositionCaret();
 477             ((wxRichTextCaret*) GetCaret())->DoDraw(& dc);
 478         }
 479 #endif
 480     }
 481
 482 #if !wxRICHTEXT_USE_OWN_CARET
 483     if (GetCaret())
 484         GetCaret()->Show();
 485     PositionCaret();
 486 #else
 487     if (GetCaret())
 488         ((wxRichTextCaret*) GetCaret())->EnableRefresh(true);
 489 #endif
 490 }
 491
 492 // Empty implementation, to prevent flicker
 493 void wxRichTextCtrl::OnEraseBackground(wxEraseEvent& WXUNUSED(event))
 494 {
 495 }
 496
 497 void wxRichTextCtrl::OnSetFocus(wxFocusEvent& WXUNUSED(event))
 498 {
 499     if (GetCaret())
 500     {
 501 #if !wxRICHTEXT_USE_OWN_CARET
 502         PositionCaret();
 503 #endif
 504         GetCaret()->Show();
 505     }
 506
 507 #if defined(__WXGTK__) && !wxRICHTEXT_USE_OWN_CARET
 508     // Work around dropouts when control is focused
 509     if (!IsFrozen())
 510     {
 511         Refresh(false);
 512     }
 513 #endif
 514 }
 515
 516 void wxRichTextCtrl::OnKillFocus(wxFocusEvent& WXUNUSED(event))
 517 {
 518     if (GetCaret())
 519         GetCaret()->Hide();
 520
 521 #if defined(__WXGTK__) && !wxRICHTEXT_USE_OWN_CARET
 522     // Work around dropouts when control is focused
 523     if (!IsFrozen())
 524     {
 525         Refresh(false);
 526     }
 527 #endif
 528 }
 529
 530 void wxRichTextCtrl::OnCaptureLost(wxMouseCaptureLostEvent& WXUNUSED(event))
 531 {
 532     m_dragging = false;
 533 }
 534
 535 // Set up the caret for the given position and container, after a mouse click
 536 bool wxRichTextCtrl::SetCaretPositionAfterClick(wxRichTextParagraphLayoutBox* container, long position, int hitTestFlags, bool extendSelection)
 537 {
 538     bool caretAtLineStart = false;
 539
 540     if (hitTestFlags & wxRICHTEXT_HITTEST_BEFORE)
 541     {
 542         // If we're at the start of a line (but not first in para)
 543         // then we should keep the caret showing at the start of the line
 544         // by showing the m_caretAtLineStart flag.
 545         wxRichTextParagraph* para = container->GetParagraphAtPosition(position);
 546         wxRichTextLine* line = container->GetLineAtPosition(position);
 547
 548         if (line && para && line->GetAbsoluteRange().GetStart() == position && para->GetRange().GetStart() != position)
 549             caretAtLineStart = true;
 550         position --;
 551     }
 552
 553     if (extendSelection && (m_caretPosition != position))
 554         ExtendSelection(m_caretPosition, position, wxRICHTEXT_SHIFT_DOWN);
 555
 556     MoveCaret(position, caretAtLineStart);
 557     SetDefaultStyleToCursorStyle();
 558
 559     return true;
 560 }
 561
 562 /// Left-click
 563 void wxRichTextCtrl::OnLeftClick(wxMouseEvent& event)
 564 {
 565     SetFocus();
 566
 567     wxClientDC dc(this);
 568     PrepareDC(dc);
 569     dc.SetFont(GetFont());
 570
 571     // TODO: detect change of focus object
 572     long position = 0;
 573     wxRichTextObject* hitObj = NULL;
 574     wxRichTextObject* contextObj = NULL;
 575     int hit = GetBuffer().HitTest(dc, event.GetLogicalPosition(dc), position, & hitObj, & contextObj);
 576
 577 #if wxUSE_DRAG_AND_DROP
 578     // If there's no selection, or we're not inside it, this isn't an attempt to initiate Drag'n'Drop
 579     if (IsEditable() && HasSelection() && GetSelectionRange().ToInternal().Contains(position))
 580     {
 581         // This might be an attempt at initiating Drag'n'Drop. So set the time & flags
 582         m_preDrag = true;
 583         m_dragStartPoint = event.GetPosition();   // No need to worry about logical positions etc, we only care about the distance from the original pt
 584
 585 #if wxUSE_DATETIME
 586         m_dragStartTime = wxDateTime::UNow();
 587 #endif // wxUSE_DATETIME
 588
 589         // Preserve behaviour of clicking on an object within the selection
 590         if (hit != wxRICHTEXT_HITTEST_NONE && hitObj)
 591             m_dragging = true;
 592
 593         return; // Don't skip the event, else the selection will be lost
 594     }
 595 #endif // wxUSE_DRAG_AND_DROP
 596
 597     if (hit != wxRICHTEXT_HITTEST_NONE && hitObj)
 598     {
 599         wxRichTextParagraphLayoutBox* oldFocusObject = GetFocusObject();
 600         wxRichTextParagraphLayoutBox* container = wxDynamicCast(contextObj, wxRichTextParagraphLayoutBox);
 601         if (container && container != GetFocusObject() && container->AcceptsFocus())
 602         {
 603             SetFocusObject(container, false /* don't set caret position yet */);
 604         }
 605
 606         m_dragging = true;
 607         CaptureMouse();
 608
 609         long oldCaretPos = m_caretPosition;
 610
 611         SetCaretPositionAfterClick(container, position, hit);
 612
 613         // For now, don't handle shift-click when we're selecting multiple objects.
 614         if (event.ShiftDown() && GetFocusObject() == oldFocusObject && m_selectionState == wxRichTextCtrlSelectionState_Normal)
 615             ExtendSelection(oldCaretPos, m_caretPosition, wxRICHTEXT_SHIFT_DOWN);
 616         else
 617             SelectNone();
 618     }
 619
 620     event.Skip();
 621 }
 622
 623 /// Left-up
 624 void wxRichTextCtrl::OnLeftUp(wxMouseEvent& event)
 625 {
 626     if (m_dragging)
 627     {
 628         m_dragging = false;
 629         if (GetCapture() == this)
 630             ReleaseMouse();
 631
 632         // See if we clicked on a URL
 633         wxClientDC dc(this);
 634         PrepareDC(dc);
 635         dc.SetFont(GetFont());
 636
 637         long position = 0;
 638         wxPoint logicalPt = event.GetLogicalPosition(dc);
 639         wxRichTextObject* hitObj = NULL;
 640         wxRichTextObject* contextObj = NULL;
 641         // Only get objects at this level, not nested, because otherwise we couldn't swipe text at a single level.
 642         int hit = GetFocusObject()->HitTest(dc, logicalPt, position, & hitObj, & contextObj, wxRICHTEXT_HITTEST_NO_NESTED_OBJECTS);
 643
 644 #if wxUSE_DRAG_AND_DROP
 645         if (m_preDrag)
 646         {
 647             // Preserve the behaviour that would have happened without drag-and-drop detection, in OnLeftClick
 648             m_preDrag = false; // Tell DnD not to happen now: we are processing Left Up ourselves.
 649
 650             // Do the actions that would have been done in OnLeftClick if we hadn't tried to drag
 651             long position = 0;
 652             wxRichTextObject* hitObj = NULL;
 653             wxRichTextObject* contextObj = NULL;
 654             int hit = GetBuffer().HitTest(dc, event.GetLogicalPosition(dc), position, & hitObj, & contextObj);
 655             wxRichTextParagraphLayoutBox* oldFocusObject = GetFocusObject();
 656             wxRichTextParagraphLayoutBox* container = wxDynamicCast(contextObj, wxRichTextParagraphLayoutBox);
 657             if (container && container != GetFocusObject() && container->AcceptsFocus())
 658             {
 659                 SetFocusObject(container, false /* don't set caret position yet */);
 660             }
 661
 662             long oldCaretPos = m_caretPosition;
 663
 664             SetCaretPositionAfterClick(container, position, hit);
 665
 666             // For now, don't handle shift-click when we're selecting multiple objects.
 667             if (event.ShiftDown() && GetFocusObject() == oldFocusObject && m_selectionState == wxRichTextCtrlSelectionState_Normal)
 668                 ExtendSelection(oldCaretPos, m_caretPosition, wxRICHTEXT_SHIFT_DOWN);
 669             else
 670                 SelectNone();
 671         }
 672 #endif
 673
 674         if ((hit != wxRICHTEXT_HITTEST_NONE) && !(hit & wxRICHTEXT_HITTEST_OUTSIDE))
 675         {
 676             wxRichTextEvent cmdEvent(
 677                 wxEVT_COMMAND_RICHTEXT_LEFT_CLICK,
 678                 GetId());
 679             cmdEvent.SetEventObject(this);
 680             cmdEvent.SetPosition(position);
 681             if (hitObj)
 682                 cmdEvent.SetContainer(hitObj->GetContainer());
 683
 684             if (!GetEventHandler()->ProcessEvent(cmdEvent))
 685             {
 686                 wxRichTextAttr attr;
 687                 if (GetStyle(position, attr))
 688                 {
 689                     if (attr.HasFlag(wxTEXT_ATTR_URL))
 690                     {
 691                         wxString urlTarget = attr.GetURL();
 692                         if (!urlTarget.IsEmpty())
 693                         {
 694                             wxMouseEvent mouseEvent(event);
 695
 696                             long startPos = 0, endPos = 0;
 697                             wxRichTextObject* obj = GetFocusObject()->GetLeafObjectAtPosition(position);
 698                             if (obj)
 699                             {
 700                                 startPos = obj->GetRange().GetStart();
 701                                 endPos = obj->GetRange().GetEnd();
 702                             }
 703
 704                             wxTextUrlEvent urlEvent(GetId(), mouseEvent, startPos, endPos);
 705                             InitCommandEvent(urlEvent);
 706
 707                             urlEvent.SetString(urlTarget);
 708
 709                             GetEventHandler()->ProcessEvent(urlEvent);
 710                         }
 711                     }
 712                 }
 713             }
 714         }
 715     }
 716
 717 #if wxUSE_DRAG_AND_DROP
 718     m_preDrag = false;
 719 #endif // wxUSE_DRAG_AND_DROP
 720
 721 #if wxUSE_CLIPBOARD && wxUSE_DATAOBJ && wxHAVE_PRIMARY_SELECTION
 722     if (HasSelection() && GetFocusObject() && GetFocusObject()->GetBuffer())
 723     {
 724         // Put the selection in PRIMARY, if it exists
 725         wxTheClipboard->UsePrimarySelection(true);
 726
 727         wxRichTextRange range = GetInternalSelectionRange();
 728         GetFocusObject()->GetBuffer()->CopyToClipboard(range);
 729
 730         wxTheClipboard->UsePrimarySelection(false);
 731     }
 732 #endif
 733 }
 734
 735 /// Mouse-movements
 736 void wxRichTextCtrl::OnMoveMouse(wxMouseEvent& event)
 737 {
 738 #if wxUSE_DRAG_AND_DROP
 739     // See if we're starting Drag'n'Drop
 740     if (m_preDrag)
 741     {
 742         int x = m_dragStartPoint.x - event.GetPosition().x;
 743         int y = m_dragStartPoint.y - event.GetPosition().y;
 744         size_t distance = abs(x) + abs(y);
 745 #if wxUSE_DATETIME
 746         wxTimeSpan diff = wxDateTime::UNow() - m_dragStartTime;
 747 #endif
 748         if ((distance > 10)
 749 #if wxUSE_DATETIME
 750              && (diff.GetMilliseconds() > 100)
 751 #endif
 752            )
 753         {
 754             m_dragging = false;
 755
 756             // Start drag'n'drop
 757             wxRichTextRange range = GetInternalSelectionRange();
 758             if (range == wxRICHTEXT_NONE)
 759             {
 760               // Don't try to drag an empty range
 761               m_preDrag = false;
 762               return;
 763             }
 764
 765             // Cache the current situation, to be restored if Drag'n'Drop is cancelled
 766             long oldPos = GetCaretPosition();
 767             wxRichTextParagraphLayoutBox* oldFocus = GetFocusObject();
 768
 769             wxDataObjectComposite* compositeObject = new wxDataObjectComposite();
 770             wxString text = GetFocusObject()->GetTextForRange(range);
 771 #ifdef __WXMSW__
 772             text = wxTextFile::Translate(text, wxTextFileType_Dos);
 773 #endif
 774             compositeObject->Add(new wxTextDataObject(text), false /* not preferred */);
 775
 776             wxRichTextBuffer* richTextBuf = new wxRichTextBuffer;
 777             GetFocusObject()->CopyFragment(range, *richTextBuf);
 778             compositeObject->Add(new wxRichTextBufferDataObject(richTextBuf), true /* preferred */);
 779
 780             wxRichTextDropSource source(*compositeObject, this);
 781             // Use wxDrag_DefaultMove, not because it's the likelier choice but because pressing Ctrl for Copy obeys the principle of least surprise
 782             // The alternative, wxDrag_DefaultCopy, requires the user to know that Move needs the Shift key pressed
 783             BeginBatchUndo(_("Drag"));
 784             switch (source.DoDragDrop(wxDrag_AllowMove | wxDrag_DefaultMove))
 785             {
 786                 case wxDragMove:
 787                 case wxDragCopy:  break;
 788
 789                 case wxDragError:
 790                     wxLogError(wxT("An error occurred during drag and drop operation"));
 791                 case wxDragNone:
 792                 case wxDragCancel:
 793                     Refresh(); // This is needed in wxMSW, otherwise resetting the position doesn't 'take'
 794                     SetCaretPosition(oldPos);
 795                     SetFocusObject(oldFocus, false);
 796                 default: break;
 797             }
 798             EndBatchUndo();
 799
 800             m_preDrag = false;
 801             return;
 802         }
 803     }
 804 #endif // wxUSE_DRAG_AND_DROP
 805
 806     wxClientDC dc(this);
 807     PrepareDC(dc);
 808     dc.SetFont(GetFont());
 809
 810     long position = 0;
 811     wxPoint logicalPt = event.GetLogicalPosition(dc);
 812     wxRichTextObject* hitObj = NULL;
 813     wxRichTextObject* contextObj = NULL;
 814
 815     int flags = 0;
 816
 817     // If we're dragging, let's only consider positions at this level; otherwise
 818     // selecting a range is not going to work.
 819     wxRichTextParagraphLayoutBox* container = & GetBuffer();
 820     if (m_dragging)
 821     {
 822         flags = wxRICHTEXT_HITTEST_NO_NESTED_OBJECTS;
 823         container = GetFocusObject();
 824     }
 825     int hit = container->HitTest(dc, logicalPt, position, & hitObj, & contextObj, flags);
 826
 827     // See if we need to change the cursor
 828
 829     {
 830         if (hit != wxRICHTEXT_HITTEST_NONE && !(hit & wxRICHTEXT_HITTEST_OUTSIDE) && hitObj)
 831         {
 832             wxRichTextParagraphLayoutBox* actualContainer = wxDynamicCast(contextObj, wxRichTextParagraphLayoutBox);
 833             wxRichTextAttr attr;
 834             if (actualContainer && GetStyle(position, attr, actualContainer))
 835             {
 836                 if (attr.HasFlag(wxTEXT_ATTR_URL))
 837                 {
 838                     SetCursor(m_urlCursor);
 839                 }
 840                 else if (!attr.HasFlag(wxTEXT_ATTR_URL))
 841                 {
 842                     SetCursor(m_textCursor);
 843                 }
 844             }
 845         }
 846         else
 847             SetCursor(m_textCursor);
 848     }
 849
 850     if (!event.Dragging())
 851     {
 852         event.Skip();
 853         return;
 854     }
 855
 856     if (m_dragging
 857 #if wxUSE_DRAG_AND_DROP
 858         && !m_preDrag
 859 #endif
 860         )
 861     {
 862         wxRichTextParagraphLayoutBox* commonAncestor = NULL;
 863         wxRichTextParagraphLayoutBox* otherContainer = NULL;
 864         wxRichTextParagraphLayoutBox* firstContainer = NULL;
 865
 866         // Check for dragging across multiple containers
 867         long position2 = 0;
 868         wxRichTextObject* hitObj2 = NULL, *contextObj2 = NULL;
 869         int hit2 = GetBuffer().HitTest(dc, logicalPt, position2, & hitObj2, & contextObj2, 0);
 870         if (hit2 != wxRICHTEXT_HITTEST_NONE && !(hit2 & wxRICHTEXT_HITTEST_OUTSIDE) && hitObj2 && hitObj != hitObj2)
 871         {
 872             // See if we can find a common ancestor
 873             if (m_selectionState == wxRichTextCtrlSelectionState_Normal)
 874             {
 875                 firstContainer = GetFocusObject();
 876                 commonAncestor = wxDynamicCast(firstContainer->GetParent(), wxRichTextParagraphLayoutBox);
 877             }
 878             else
 879             {
 880                 firstContainer = wxDynamicCast(m_selectionAnchorObject, wxRichTextParagraphLayoutBox);
 881                 //commonAncestor = GetFocusObject(); // when the selection state is not normal, the focus object (e.g. table)
 882                                                    // is the common ancestor.
 883                 commonAncestor = wxDynamicCast(firstContainer->GetParent(), wxRichTextParagraphLayoutBox);
 884             }
 885
 886             if (commonAncestor && commonAncestor->HandlesChildSelections())
 887             {
 888                 wxRichTextObject* p = hitObj2;
 889                 while (p)
 890                 {
 891                     if (p->GetParent() == commonAncestor)
 892                     {
 893                         otherContainer = wxDynamicCast(p, wxRichTextParagraphLayoutBox);
 894                         break;
 895                     }
 896                     p = p->GetParent();
 897                 }
 898             }
 899
 900             if (commonAncestor && firstContainer && otherContainer)
 901             {
 902                 // We have now got a second container that shares a parent with the current or anchor object.
 903                 if (m_selectionState == wxRichTextCtrlSelectionState_Normal)
 904                 {
 905                     // Don't go into common-ancestor selection mode if we still have the same
 906                     // container.
 907                     if (otherContainer != firstContainer)
 908                     {
 909                         m_selectionState = wxRichTextCtrlSelectionState_CommonAncestor;
 910                         m_selectionAnchorObject = firstContainer;
 911                         m_selectionAnchor = firstContainer->GetRange().GetStart();
 912
 913                         // The common ancestor, such as a table, returns the cell selection
 914                         // between the anchor and current position.
 915                         m_selection = commonAncestor->GetSelection(m_selectionAnchor, otherContainer->GetRange().GetStart());
 916                     }
 917                 }
 918                 else
 919                 {
 920                     m_selection = commonAncestor->GetSelection(m_selectionAnchor, otherContainer->GetRange().GetStart());
 921                 }
 922
 923                 Refresh();
 924
 925                 if (otherContainer->AcceptsFocus())
 926                     SetFocusObject(otherContainer, false /* don't set caret and clear selection */);
 927                 MoveCaret(-1, false);
 928                 SetDefaultStyleToCursorStyle();
 929             }
 930         }
 931     }
 932
 933     if (hitObj && m_dragging && hit != wxRICHTEXT_HITTEST_NONE && m_selectionState == wxRichTextCtrlSelectionState_Normal
 934 #if wxUSE_DRAG_AND_DROP
 935         && !m_preDrag
 936 #endif
 937         )
 938     {
 939         // TODO: test closeness
 940         SetCaretPositionAfterClick(container, position, hit, true /* extend selection */);
 941     }
 942 }
 943
 944 /// Right-click
 945 void wxRichTextCtrl::OnRightClick(wxMouseEvent& event)
 946 {
 947     SetFocus();
 948
 949     wxClientDC dc(this);
 950     PrepareDC(dc);
 951     dc.SetFont(GetFont());
 952
 953     long position = 0;
 954     wxPoint logicalPt = event.GetLogicalPosition(dc);
 955     wxRichTextObject* hitObj = NULL;
 956     wxRichTextObject* contextObj = NULL;
 957     int hit = GetFocusObject()->HitTest(dc, logicalPt, position, & hitObj, & contextObj);
 958
 959     if (hitObj && hitObj->GetContainer() != GetFocusObject())
 960     {
 961         wxRichTextParagraphLayoutBox* actualContainer = wxDynamicCast(contextObj, wxRichTextParagraphLayoutBox);
 962         if (actualContainer && actualContainer->AcceptsFocus())
 963         {
 964             SetFocusObject(actualContainer, false /* don't set caret position yet */);
 965             SetCaretPositionAfterClick(actualContainer, position, hit);
 966         }
 967     }
 968
 969     wxRichTextEvent cmdEvent(
 970         wxEVT_COMMAND_RICHTEXT_RIGHT_CLICK,
 971         GetId());
 972     cmdEvent.SetEventObject(this);
 973     cmdEvent.SetPosition(position);
 974     if (hitObj)
 975         cmdEvent.SetContainer(hitObj->GetContainer());
 976
 977     if (!GetEventHandler()->ProcessEvent(cmdEvent))
 978         event.Skip();
 979 }
 980
 981 /// Left-double-click
 982 void wxRichTextCtrl::OnLeftDClick(wxMouseEvent& WXUNUSED(event))
 983 {
 984     wxRichTextEvent cmdEvent(
 985         wxEVT_COMMAND_RICHTEXT_LEFT_DCLICK,
 986         GetId());
 987     cmdEvent.SetEventObject(this);
 988     cmdEvent.SetPosition(m_caretPosition+1);
 989     cmdEvent.SetContainer(GetFocusObject());
 990
 991     if (!GetEventHandler()->ProcessEvent(cmdEvent))
 992     {
 993         SelectWord(GetCaretPosition()+1);
 994     }
 995 }
 996
 997 /// Middle-click
 998 void wxRichTextCtrl::OnMiddleClick(wxMouseEvent& event)
 999 {
1000     wxRichTextEvent cmdEvent(
1001         wxEVT_COMMAND_RICHTEXT_MIDDLE_CLICK,
1002         GetId());
1003     cmdEvent.SetEventObject(this);
1004     cmdEvent.SetPosition(m_caretPosition+1);
1005     cmdEvent.SetContainer(GetFocusObject());
1006
1007     if (!GetEventHandler()->ProcessEvent(cmdEvent))
1008         event.Skip();
1009
1010 #if wxUSE_CLIPBOARD && wxUSE_DATAOBJ && wxHAVE_PRIMARY_SELECTION
1011     // Paste any PRIMARY selection, if it exists
1012     wxTheClipboard->UsePrimarySelection(true);
1013     Paste();
1014     wxTheClipboard->UsePrimarySelection(false);
1015 #endif
1016 }
1017
1018 /// Key press
1019 void wxRichTextCtrl::OnChar(wxKeyEvent& event)
1020 {
1021     int flags = 0;
1022     if (event.CmdDown())
1023         flags |= wxRICHTEXT_CTRL_DOWN;
1024     if (event.ShiftDown())
1025         flags |= wxRICHTEXT_SHIFT_DOWN;
1026     if (event.AltDown())
1027         flags |= wxRICHTEXT_ALT_DOWN;
1028
1029     if (event.GetEventType() == wxEVT_KEY_DOWN)
1030     {
1031         if (event.IsKeyInCategory(WXK_CATEGORY_NAVIGATION))
1032         {
1033             KeyboardNavigate(event.GetKeyCode(), flags);
1034             return;
1035         }
1036
1037         long keycode = event.GetKeyCode();
1038         switch ( keycode )
1039         {
1040             case WXK_ESCAPE:
1041             case WXK_START:
1042             case WXK_LBUTTON:
1043             case WXK_RBUTTON:
1044             case WXK_CANCEL:
1045             case WXK_MBUTTON:
1046             case WXK_CLEAR:
1047             case WXK_SHIFT:
1048             case WXK_ALT:
1049             case WXK_CONTROL:
1050             case WXK_MENU:
1051             case WXK_PAUSE:
1052             case WXK_CAPITAL:
1053             case WXK_END:
1054             case WXK_HOME:
1055             case WXK_LEFT:
1056             case WXK_UP:
1057             case WXK_RIGHT:
1058             case WXK_DOWN:
1059             case WXK_SELECT:
1060             case WXK_PRINT:
1061             case WXK_EXECUTE:
1062             case WXK_SNAPSHOT:
1063             case WXK_INSERT:
1064             case WXK_HELP:
1065             case WXK_F1:
1066             case WXK_F2:
1067             case WXK_F3:
1068             case WXK_F4:
1069             case WXK_F5:
1070             case WXK_F6:
1071             case WXK_F7:
1072             case WXK_F8:
1073             case WXK_F9:
1074             case WXK_F10:
1075             case WXK_F11:
1076             case WXK_F12:
1077             case WXK_F13:
1078             case WXK_F14:
1079             case WXK_F15:
1080             case WXK_F16:
1081             case WXK_F17:
1082             case WXK_F18:
1083             case WXK_F19:
1084             case WXK_F20:
1085             case WXK_F21:
1086             case WXK_F22:
1087             case WXK_F23:
1088             case WXK_F24:
1089             case WXK_NUMLOCK:
1090             case WXK_SCROLL:
1091             case WXK_PAGEUP:
1092             case WXK_PAGEDOWN:
1093             case WXK_NUMPAD_F1:
1094             case WXK_NUMPAD_F2:
1095             case WXK_NUMPAD_F3:
1096             case WXK_NUMPAD_F4:
1097             case WXK_NUMPAD_HOME:
1098             case WXK_NUMPAD_LEFT:
1099             case WXK_NUMPAD_UP:
1100             case WXK_NUMPAD_RIGHT:
1101             case WXK_NUMPAD_DOWN:
1102             case WXK_NUMPAD_PAGEUP:
1103             case WXK_NUMPAD_PAGEDOWN:
1104             case WXK_NUMPAD_END:
1105             case WXK_NUMPAD_BEGIN:
1106             case WXK_NUMPAD_INSERT:
1107             case WXK_WINDOWS_LEFT:
1108             {
1109                 return;
1110             }
1111             default:
1112             {
1113             }
1114         }
1115
1116         // Must process this before translation, otherwise it's translated into a WXK_DELETE event.
1117         if (event.CmdDown() && event.GetKeyCode() == WXK_BACK)
1118         {
1119             BeginBatchUndo(_("Delete Text"));
1120
1121             long newPos = m_caretPosition;
1122
1123             bool processed = DeleteSelectedContent(& newPos);
1124
1125             // Submit range in character positions, which are greater than caret positions,
1126             // so subtract 1 for deleted character and add 1 for conversion to character position.
1127             if (newPos > -1)
1128             {
1129                 if (event.CmdDown())
1130                 {
1131                     long pos = wxRichTextCtrl::FindNextWordPosition(-1);
1132                     if (pos < newPos)
1133                     {
1134                         GetFocusObject()->DeleteRangeWithUndo(wxRichTextRange(pos+1, newPos), this, & GetBuffer());
1135                         processed = true;
1136                     }
1137                 }
1138
1139                 if (!processed)
1140                     GetFocusObject()->DeleteRangeWithUndo(wxRichTextRange(newPos, newPos), this, & GetBuffer());
1141             }
1142
1143             EndBatchUndo();
1144
1145             if (GetLastPosition() == -1)
1146             {
1147                 GetFocusObject()->Reset();
1148
1149                 m_caretPosition = -1;
1150                 PositionCaret();
1151                 SetDefaultStyleToCursorStyle();
1152             }
1153
1154             ScrollIntoView(m_caretPosition, WXK_LEFT);
1155
1156             wxRichTextEvent cmdEvent(
1157                 wxEVT_COMMAND_RICHTEXT_DELETE,
1158                 GetId());
1159             cmdEvent.SetEventObject(this);
1160             cmdEvent.SetFlags(flags);
1161             cmdEvent.SetPosition(m_caretPosition+1);
1162             cmdEvent.SetContainer(GetFocusObject());
1163             GetEventHandler()->ProcessEvent(cmdEvent);
1164
1165             Update();
1166         }
1167         else
1168             event.Skip();
1169
1170         return;
1171     }
1172
1173     // all the other keys modify the controls contents which shouldn't be
1174     // possible if we're read-only
1175     if ( !IsEditable() )
1176     {
1177         event.Skip();
1178         return;
1179     }
1180
1181     if (event.GetKeyCode() == WXK_RETURN)
1182     {
1183         BeginBatchUndo(_("Insert Text"));
1184
1185         long newPos = m_caretPosition;
1186
1187         DeleteSelectedContent(& newPos);
1188
1189         if (event.ShiftDown())
1190         {
1191             wxString text;
1192             text = wxRichTextLineBreakChar;
1193             GetFocusObject()->InsertTextWithUndo(& GetBuffer(), newPos+1, text, this);
1194             m_caretAtLineStart = true;
1195             PositionCaret();
1196         }
1197         else
1198             GetFocusObject()->InsertNewlineWithUndo(& GetBuffer(), newPos+1, this, wxRICHTEXT_INSERT_WITH_PREVIOUS_PARAGRAPH_STYLE|wxRICHTEXT_INSERT_INTERACTIVE);
1199
1200         EndBatchUndo();
1201         SetDefaultStyleToCursorStyle();
1202
1203         ScrollIntoView(m_caretPosition, WXK_RIGHT);
1204
1205         wxRichTextEvent cmdEvent(
1206             wxEVT_COMMAND_RICHTEXT_RETURN,
1207             GetId());
1208         cmdEvent.SetEventObject(this);
1209         cmdEvent.SetFlags(flags);
1210         cmdEvent.SetPosition(newPos+1);
1211         cmdEvent.SetContainer(GetFocusObject());
1212
1213         if (!GetEventHandler()->ProcessEvent(cmdEvent))
1214         {
1215             // Generate conventional event
1216             wxCommandEvent textEvent(wxEVT_COMMAND_TEXT_ENTER, GetId());
1217             InitCommandEvent(textEvent);
1218
1219             GetEventHandler()->ProcessEvent(textEvent);
1220         }
1221         Update();
1222     }
1223     else if (event.GetKeyCode() == WXK_BACK)
1224     {
1225         BeginBatchUndo(_("Delete Text"));
1226
1227         long newPos = m_caretPosition;
1228
1229         bool processed = DeleteSelectedContent(& newPos);
1230
1231         // Submit range in character positions, which are greater than caret positions,
1232         // so subtract 1 for deleted character and add 1 for conversion to character position.
1233         if (newPos > -1)
1234         {
1235             if (event.CmdDown())
1236             {
1237                 long pos = wxRichTextCtrl::FindNextWordPosition(-1);
1238                 if (pos < newPos)
1239                 {
1240                     GetFocusObject()->DeleteRangeWithUndo(wxRichTextRange(pos+1, newPos), this, & GetBuffer());
1241                     processed = true;
1242                 }
1243             }
1244
1245             if (!processed)
1246                 GetFocusObject()->DeleteRangeWithUndo(wxRichTextRange(newPos, newPos), this, & GetBuffer());
1247         }
1248
1249         EndBatchUndo();
1250
1251         if (GetLastPosition() == -1)
1252         {
1253             GetFocusObject()->Reset();
1254
1255             m_caretPosition = -1;
1256             PositionCaret();
1257             SetDefaultStyleToCursorStyle();
1258         }
1259
1260         ScrollIntoView(m_caretPosition, WXK_LEFT);
1261
1262         wxRichTextEvent cmdEvent(
1263             wxEVT_COMMAND_RICHTEXT_DELETE,
1264             GetId());
1265         cmdEvent.SetEventObject(this);
1266         cmdEvent.SetFlags(flags);
1267         cmdEvent.SetPosition(m_caretPosition+1);
1268         cmdEvent.SetContainer(GetFocusObject());
1269         GetEventHandler()->ProcessEvent(cmdEvent);
1270
1271         Update();
1272     }
1273     else if (event.GetKeyCode() == WXK_DELETE)
1274     {
1275         BeginBatchUndo(_("Delete Text"));
1276
1277         long newPos = m_caretPosition;
1278
1279         bool processed = DeleteSelectedContent(& newPos);
1280
1281         // Submit range in character positions, which are greater than caret positions,
1282         if (newPos < GetFocusObject()->GetOwnRange().GetEnd()+1)
1283         {
1284             if (event.CmdDown())
1285             {
1286                 long pos = wxRichTextCtrl::FindNextWordPosition(1);
1287                 if (pos != -1 && (pos > newPos))
1288                 {
1289                     GetFocusObject()->DeleteRangeWithUndo(wxRichTextRange(newPos+1, pos), this, & GetBuffer());
1290                     processed = true;
1291                 }
1292             }
1293
1294             if (!processed && newPos < (GetLastPosition()-1))
1295                 GetFocusObject()->DeleteRangeWithUndo(wxRichTextRange(newPos+1, newPos+1), this, & GetBuffer());
1296         }
1297
1298         EndBatchUndo();
1299
1300         if (GetLastPosition() == -1)
1301         {
1302             GetFocusObject()->Reset();
1303
1304             m_caretPosition = -1;
1305             PositionCaret();
1306             SetDefaultStyleToCursorStyle();
1307         }
1308
1309         ScrollIntoView(m_caretPosition, WXK_LEFT);
1310
1311         wxRichTextEvent cmdEvent(
1312             wxEVT_COMMAND_RICHTEXT_DELETE,
1313             GetId());
1314         cmdEvent.SetEventObject(this);
1315         cmdEvent.SetFlags(flags);
1316         cmdEvent.SetPosition(m_caretPosition+1);
1317         cmdEvent.SetContainer(GetFocusObject());
1318         GetEventHandler()->ProcessEvent(cmdEvent);
1319
1320         Update();
1321     }
1322     else
1323     {
1324         long keycode = event.GetKeyCode();
1325         switch ( keycode )
1326         {
1327             case WXK_ESCAPE:
1328             {
1329                 event.Skip();
1330                 return;
1331             }
1332
1333             default:
1334             {
1335 #ifdef __WXMAC__
1336                 if (event.CmdDown())
1337 #else
1338                 // Fixes AltGr+key with European input languages on Windows
1339                 if ((event.CmdDown() && !event.AltDown()) || (event.AltDown() && !event.CmdDown()))
1340 #endif
1341                 {
1342                     event.Skip();
1343                     return;
1344                 }
1345
1346                 wxRichTextEvent cmdEvent(
1347                     wxEVT_COMMAND_RICHTEXT_CHARACTER,
1348                     GetId());
1349                 cmdEvent.SetEventObject(this);
1350                 cmdEvent.SetFlags(flags);
1351 #if wxUSE_UNICODE
1352                 cmdEvent.SetCharacter(event.GetUnicodeKey());
1353 #else
1354                 cmdEvent.SetCharacter((wxChar) keycode);
1355 #endif
1356                 cmdEvent.SetPosition(m_caretPosition+1);
1357                 cmdEvent.SetContainer(GetFocusObject());
1358
1359                 if (keycode == wxT('\t'))
1360                 {
1361                     // See if we need to promote or demote the selection or paragraph at the cursor
1362                     // position, instead of inserting a tab.
1363                     long pos = GetAdjustedCaretPosition(GetCaretPosition());
1364                     wxRichTextParagraph* para = GetFocusObject()->GetParagraphAtPosition(pos);
1365                     if (para && para->GetRange().GetStart() == pos && para->GetAttributes().HasListStyleName())
1366                     {
1367                         wxRichTextRange range;
1368                         if (HasSelection())
1369                             range = GetSelectionRange();
1370                         else
1371                             range = para->GetRange().FromInternal();
1372
1373                         int promoteBy = event.ShiftDown() ? 1 : -1;
1374
1375                         PromoteList(promoteBy, range, NULL);
1376
1377                         GetEventHandler()->ProcessEvent(cmdEvent);
1378
1379                         return;
1380                     }
1381                 }
1382
1383                 BeginBatchUndo(_("Insert Text"));
1384
1385                 long newPos = m_caretPosition;
1386                 DeleteSelectedContent(& newPos);
1387
1388 #if wxUSE_UNICODE
1389                 wxString str = event.GetUnicodeKey();
1390 #else
1391                 wxString str = (wxChar) event.GetKeyCode();
1392 #endif
1393                 GetFocusObject()->InsertTextWithUndo(& GetBuffer(), newPos+1, str, this, 0);
1394
1395                 EndBatchUndo();
1396
1397                 SetDefaultStyleToCursorStyle();
1398                 ScrollIntoView(m_caretPosition, WXK_RIGHT);
1399
1400                 cmdEvent.SetPosition(m_caretPosition);
1401                 GetEventHandler()->ProcessEvent(cmdEvent);
1402
1403                 Update();
1404             }
1405         }
1406     }
1407 }
1408
1409 /// Delete content if there is a selection, e.g. when pressing a key.
1410 bool wxRichTextCtrl::DeleteSelectedContent(long* newPos)
1411 {
1412     if (HasSelection())
1413     {
1414         long pos = m_selection.GetRange().GetStart();
1415         wxRichTextRange range = m_selection.GetRange();
1416
1417         // SelectAll causes more to be selected than doing it interactively,
1418         // and causes a new paragraph to be inserted. So for multiline buffers,
1419         // don't delete the final position.
1420         if (range.GetEnd() == GetLastPosition() && GetNumberOfLines() > 0)
1421             range.SetEnd(range.GetEnd()-1);
1422
1423         GetFocusObject()->DeleteRangeWithUndo(range, this, & GetBuffer());
1424         m_selection.Reset();
1425         m_selectionState = wxRichTextCtrlSelectionState_Normal;
1426
1427         if (newPos)
1428             *newPos = pos-1;
1429         return true;
1430     }
1431     else
1432         return false;
1433 }
1434
1435 /// Keyboard navigation
1436
1437 /*
1438
1439 Left:       left one character
1440 Right:      right one character
1441 Up:         up one line
1442 Down:       down one line
1443 Ctrl-Left:  left one word
1444 Ctrl-Right: right one word
1445 Ctrl-Up:    previous paragraph start
1446 Ctrl-Down:  next start of paragraph
1447 Home:       start of line
1448 End:        end of line
1449 Ctrl-Home:  start of document
1450 Ctrl-End:   end of document
1451 Page-Up:    Up a screen
1452 Page-Down:  Down a screen
1453
1454 Maybe:
1455
1456 Ctrl-Alt-PgUp: Start of window
1457 Ctrl-Alt-PgDn: End of window
1458 F8:         Start selection mode
1459 Esc:        End selection mode
1460
1461 Adding Shift does the above but starts/extends selection.
1462
1463
1464  */
1465
1466 bool wxRichTextCtrl::KeyboardNavigate(int keyCode, int flags)
1467 {
1468     bool success = false;
1469
1470     if (keyCode == WXK_RIGHT || keyCode == WXK_NUMPAD_RIGHT)
1471     {
1472         if (flags & wxRICHTEXT_CTRL_DOWN)
1473             success = WordRight(1, flags);
1474         else
1475             success = MoveRight(1, flags);
1476     }
1477     else if (keyCode == WXK_LEFT || keyCode == WXK_NUMPAD_LEFT)
1478     {
1479         if (flags & wxRICHTEXT_CTRL_DOWN)
1480             success = WordLeft(1, flags);
1481         else
1482             success = MoveLeft(1, flags);
1483     }
1484     else if (keyCode == WXK_UP || keyCode == WXK_NUMPAD_UP)
1485     {
1486         if (flags & wxRICHTEXT_CTRL_DOWN)
1487             success = MoveToParagraphStart(flags);
1488         else
1489             success = MoveUp(1, flags);
1490     }
1491     else if (keyCode == WXK_DOWN || keyCode == WXK_NUMPAD_DOWN)
1492     {
1493         if (flags & wxRICHTEXT_CTRL_DOWN)
1494             success = MoveToParagraphEnd(flags);
1495         else
1496             success = MoveDown(1, flags);
1497     }
1498     else if (keyCode == WXK_PAGEUP || keyCode == WXK_NUMPAD_PAGEUP)
1499     {
1500         success = PageUp(1, flags);
1501     }
1502     else if (keyCode == WXK_PAGEDOWN || keyCode == WXK_NUMPAD_PAGEDOWN)
1503     {
1504         success = PageDown(1, flags);
1505     }
1506     else if (keyCode == WXK_HOME || keyCode == WXK_NUMPAD_HOME)
1507     {
1508         if (flags & wxRICHTEXT_CTRL_DOWN)
1509             success = MoveHome(flags);
1510         else
1511             success = MoveToLineStart(flags);
1512     }
1513     else if (keyCode == WXK_END || keyCode == WXK_NUMPAD_END)
1514     {
1515         if (flags & wxRICHTEXT_CTRL_DOWN)
1516             success = MoveEnd(flags);
1517         else
1518             success = MoveToLineEnd(flags);
1519     }
1520
1521     if (success)
1522     {
1523         ScrollIntoView(m_caretPosition, keyCode);
1524         SetDefaultStyleToCursorStyle();
1525     }
1526
1527     return success;
1528 }
1529
1530 /// Extend the selection. Selections are in caret positions.
1531 bool wxRichTextCtrl::ExtendSelection(long oldPos, long newPos, int flags)
1532 {
1533     if (flags & wxRICHTEXT_SHIFT_DOWN)
1534     {
1535         if (oldPos == newPos)
1536             return false;
1537
1538         wxRichTextSelection oldSelection = m_selection;
1539
1540         m_selection.SetContainer(GetFocusObject());
1541
1542         wxRichTextRange oldRange;
1543         if (m_selection.IsValid())
1544             oldRange = m_selection.GetRange();
1545         else
1546             oldRange = wxRICHTEXT_NO_SELECTION;
1547         wxRichTextRange newRange;
1548
1549         // If not currently selecting, start selecting
1550         if (oldRange.GetStart() == -2)
1551         {
1552             m_selectionAnchor = oldPos;
1553
1554             if (oldPos > newPos)
1555                 newRange.SetRange(newPos+1, oldPos);
1556             else
1557                 newRange.SetRange(oldPos+1, newPos);
1558         }
1559         else
1560         {
1561             // Always ensure that the selection range start is greater than
1562             // the end.
1563             if (newPos > m_selectionAnchor)
1564                 newRange.SetRange(m_selectionAnchor+1, newPos);
1565             else if (newPos == m_selectionAnchor)
1566                 newRange = wxRichTextRange(-2, -2);
1567             else
1568                 newRange.SetRange(newPos+1, m_selectionAnchor);
1569         }
1570
1571         m_selection.SetRange(newRange);
1572
1573         RefreshForSelectionChange(oldSelection, m_selection);
1574
1575         if (newRange.GetStart() > newRange.GetEnd())
1576         {
1577             wxLogDebug(wxT("Strange selection range"));
1578         }
1579
1580         return true;
1581     }
1582     else
1583         return false;
1584 }
1585
1586 /// Scroll into view, returning true if we scrolled.
1587 /// This takes a _caret_ position.
1588 bool wxRichTextCtrl::ScrollIntoView(long position, int keyCode)
1589 {
1590     wxRichTextLine* line = GetVisibleLineForCaretPosition(position);
1591
1592     if (!line)
1593         return false;
1594
1595     int ppuX, ppuY;
1596     GetScrollPixelsPerUnit(& ppuX, & ppuY);
1597
1598     int startXUnits, startYUnits;
1599     GetViewStart(& startXUnits, & startYUnits);
1600     int startY = startYUnits * ppuY;
1601
1602     int sx = 0, sy = 0;
1603     GetVirtualSize(& sx, & sy);
1604     int sxUnits = 0;
1605     int syUnits = 0;
1606     if (ppuY != 0)
1607         syUnits = sy/ppuY;
1608
1609     wxRect rect = line->GetRect();
1610
1611     bool scrolled = false;
1612
1613     wxSize clientSize = GetClientSize();
1614
1615     int leftMargin, rightMargin, topMargin, bottomMargin;
1616
1617     {
1618         wxClientDC dc(this);
1619         wxRichTextObject::GetTotalMargin(dc, & GetBuffer(), GetBuffer().GetAttributes(), leftMargin, rightMargin,
1620             topMargin, bottomMargin);
1621     }
1622 //    clientSize.y -= GetBuffer().GetBottomMargin();
1623     clientSize.y -= bottomMargin;
1624
1625     if (GetWindowStyle() & wxRE_CENTRE_CARET)
1626     {
1627         int y = rect.y - GetClientSize().y/2;
1628         int yUnits = (int) (0.5 + ((float) y)/(float) ppuY);
1629         if (y >= 0 && (y + clientSize.y) < GetBuffer().GetCachedSize().y)
1630         {
1631             if (startYUnits != yUnits)
1632             {
1633                 SetScrollbars(ppuX, ppuY, sxUnits, syUnits, 0, yUnits);
1634                 scrolled = true;
1635             }
1636 #if !wxRICHTEXT_USE_OWN_CARET
1637             if (scrolled)
1638 #endif
1639                 PositionCaret();
1640
1641             return scrolled;
1642         }
1643     }
1644
1645     // Going down
1646     if (keyCode == WXK_DOWN || keyCode == WXK_NUMPAD_DOWN ||
1647         keyCode == WXK_RIGHT || keyCode == WXK_NUMPAD_RIGHT ||
1648         keyCode == WXK_END || keyCode == WXK_NUMPAD_END ||
1649         keyCode == WXK_PAGEDOWN || keyCode == WXK_NUMPAD_PAGEDOWN)
1650     {
1651         if ((rect.y + rect.height) > (clientSize.y + startY))
1652         {
1653             // Make it scroll so this item is at the bottom
1654             // of the window
1655             int y = rect.y - (clientSize.y - rect.height);
1656             int yUnits = (int) (0.5 + ((float) y)/(float) ppuY);
1657
1658             // If we're still off the screen, scroll another line down
1659             if ((rect.y + rect.height) > (clientSize.y + (yUnits*ppuY)))
1660                 yUnits ++;
1661
1662             if (startYUnits != yUnits)
1663             {
1664                 SetScrollbars(ppuX, ppuY, sxUnits, syUnits, 0, yUnits);
1665                 scrolled = true;
1666             }
1667         }
1668         else if (rect.y < (startY + GetBuffer().GetTopMargin()))
1669         {
1670             // Make it scroll so this item is at the top
1671             // of the window
1672             int y = rect.y - GetBuffer().GetTopMargin();
1673             int yUnits = (int) (0.5 + ((float) y)/(float) ppuY);
1674
1675             if (startYUnits != yUnits)
1676             {
1677                 SetScrollbars(ppuX, ppuY, sxUnits, syUnits, 0, yUnits);
1678                 scrolled = true;
1679             }
1680         }
1681     }
1682     // Going up
1683     else if (keyCode == WXK_UP  || keyCode == WXK_NUMPAD_UP ||
1684              keyCode == WXK_LEFT || keyCode == WXK_NUMPAD_LEFT ||
1685              keyCode == WXK_HOME || keyCode == WXK_NUMPAD_HOME ||
1686              keyCode == WXK_PAGEUP || keyCode == WXK_NUMPAD_PAGEUP )
1687     {
1688         if (rect.y < (startY + GetBuffer().GetBottomMargin()))
1689         {
1690             // Make it scroll so this item is at the top
1691             // of the window
1692             int y = rect.y - GetBuffer().GetTopMargin();
1693             int yUnits = (int) (0.5 + ((float) y)/(float) ppuY);
1694
1695             if (startYUnits != yUnits)
1696             {
1697                 SetScrollbars(ppuX, ppuY, sxUnits, syUnits, 0, yUnits);
1698                 scrolled = true;
1699             }
1700         }
1701         else if ((rect.y + rect.height) > (clientSize.y + startY))
1702         {
1703             // Make it scroll so this item is at the bottom
1704             // of the window
1705             int y = rect.y - (clientSize.y - rect.height);
1706             int yUnits = (int) (0.5 + ((float) y)/(float) ppuY);
1707
1708             // If we're still off the screen, scroll another line down
1709             if ((rect.y + rect.height) > (clientSize.y + (yUnits*ppuY)))
1710                 yUnits ++;
1711
1712             if (startYUnits != yUnits)
1713             {
1714                 SetScrollbars(ppuX, ppuY, sxUnits, syUnits, 0, yUnits);
1715                 scrolled = true;
1716             }
1717         }
1718     }
1719
1720 #if !wxRICHTEXT_USE_OWN_CARET
1721     if (scrolled)
1722 #endif
1723         PositionCaret();
1724
1725     return scrolled;
1726 }
1727
1728 /// Is the given position visible on the screen?
1729 bool wxRichTextCtrl::IsPositionVisible(long pos) const
1730 {
1731     wxRichTextLine* line = GetVisibleLineForCaretPosition(pos-1);
1732
1733     if (!line)
1734         return false;
1735
1736     int ppuX, ppuY;
1737     GetScrollPixelsPerUnit(& ppuX, & ppuY);
1738
1739     int startX, startY;
1740     GetViewStart(& startX, & startY);
1741     startX = 0;
1742     startY = startY * ppuY;
1743
1744     wxRect rect = line->GetRect();
1745     wxSize clientSize = GetClientSize();
1746     clientSize.y -= GetBuffer().GetBottomMargin();
1747
1748     return (rect.GetTop() >= (startY + GetBuffer().GetTopMargin())) && (rect.GetBottom() <= (startY + clientSize.y));
1749 }
1750
1751 void wxRichTextCtrl::SetCaretPosition(long position, bool showAtLineStart)
1752 {
1753     m_caretPosition = position;
1754     m_caretAtLineStart = showAtLineStart;
1755 }
1756
1757 /// Move caret one visual step forward: this may mean setting a flag
1758 /// and keeping the same position if we're going from the end of one line
1759 /// to the start of the next, which may be the exact same caret position.
1760 void wxRichTextCtrl::MoveCaretForward(long oldPosition)
1761 {
1762     wxRichTextParagraph* para = GetFocusObject()->GetParagraphAtPosition(oldPosition);
1763
1764     // Only do the check if we're not at the end of the paragraph (where things work OK
1765     // anyway)
1766     if (para && (oldPosition != para->GetRange().GetEnd() - 1))
1767     {
1768         wxRichTextLine* line = GetFocusObject()->GetLineAtPosition(oldPosition);
1769
1770         if (line)
1771         {
1772             wxRichTextRange lineRange = line->GetAbsoluteRange();
1773
1774             // We're at the end of a line. See whether we need to
1775             // stay at the same actual caret position but change visual
1776             // position, or not.
1777             if (oldPosition == lineRange.GetEnd())
1778             {
1779                 if (m_caretAtLineStart)
1780                 {
1781                     // We're already at the start of the line, so actually move on now.
1782                     m_caretPosition = oldPosition + 1;
1783                     m_caretAtLineStart = false;
1784                 }
1785                 else
1786                 {
1787                     // We're showing at the end of the line, so keep to
1788                     // the same position but indicate that we're to show
1789                     // at the start of the next line.
1790                     m_caretPosition = oldPosition;
1791                     m_caretAtLineStart = true;
1792                 }
1793                 SetDefaultStyleToCursorStyle();
1794                 return;
1795             }
1796         }
1797     }
1798     m_caretPosition ++;
1799     SetDefaultStyleToCursorStyle();
1800 }
1801
1802 /// Move caret one visual step backward: this may mean setting a flag
1803 /// and keeping the same position if we're going from the end of one line
1804 /// to the start of the next, which may be the exact same caret position.
1805 void wxRichTextCtrl::MoveCaretBack(long oldPosition)
1806 {
1807     wxRichTextParagraph* para = GetFocusObject()->GetParagraphAtPosition(oldPosition);
1808
1809     // Only do the check if we're not at the start of the paragraph (where things work OK
1810     // anyway)
1811     if (para && (oldPosition != para->GetRange().GetStart()))
1812     {
1813         wxRichTextLine* line = GetFocusObject()->GetLineAtPosition(oldPosition);
1814
1815         if (line)
1816         {
1817             wxRichTextRange lineRange = line->GetAbsoluteRange();
1818
1819             // We're at the start of a line. See whether we need to
1820             // stay at the same actual caret position but change visual
1821             // position, or not.
1822             if (oldPosition == lineRange.GetStart())
1823             {
1824                 m_caretPosition = oldPosition-1;
1825                 m_caretAtLineStart = true;
1826                 return;
1827             }
1828             else if (oldPosition == lineRange.GetEnd())
1829             {
1830                 if (m_caretAtLineStart)
1831                 {
1832                     // We're at the start of the line, so keep the same caret position
1833                     // but clear the start-of-line flag.
1834                     m_caretPosition = oldPosition;
1835                     m_caretAtLineStart = false;
1836                 }
1837                 else
1838                 {
1839                     // We're showing at the end of the line, so go back
1840                     // to the previous character position.
1841                     m_caretPosition = oldPosition - 1;
1842                 }
1843                 SetDefaultStyleToCursorStyle();
1844                 return;
1845             }
1846         }
1847     }
1848     m_caretPosition --;
1849     SetDefaultStyleToCursorStyle();
1850 }
1851
1852 /// Move right
1853 bool wxRichTextCtrl::MoveRight(int noPositions, int flags)
1854 {
1855     long endPos = GetFocusObject()->GetOwnRange().GetEnd();
1856
1857     if (m_caretPosition + noPositions < endPos)
1858     {
1859         long oldPos = m_caretPosition;
1860         long newPos = m_caretPosition + noPositions;
1861
1862         bool extendSel = ExtendSelection(m_caretPosition, newPos, flags);
1863         if (!extendSel)
1864             SelectNone();
1865
1866         // Determine by looking at oldPos and m_caretPosition whether
1867         // we moved from the end of a line to the start of the next line, in which case
1868         // we want to adjust the caret position such that it is positioned at the
1869         // start of the next line, rather than jumping past the first character of the
1870         // line.
1871         if (noPositions == 1 && !extendSel)
1872             MoveCaretForward(oldPos);
1873         else
1874             SetCaretPosition(newPos);
1875
1876         PositionCaret();
1877         SetDefaultStyleToCursorStyle();
1878
1879         return true;
1880     }
1881     else
1882         return false;
1883 }
1884
1885 /// Move left
1886 bool wxRichTextCtrl::MoveLeft(int noPositions, int flags)
1887 {
1888     long startPos = -1;
1889
1890     if (m_caretPosition > startPos - noPositions + 1)
1891     {
1892         long oldPos = m_caretPosition;
1893         long newPos = m_caretPosition - noPositions;
1894         bool extendSel = ExtendSelection(m_caretPosition, newPos, flags);
1895         if (!extendSel)
1896             SelectNone();
1897
1898         if (noPositions == 1 && !extendSel)
1899             MoveCaretBack(oldPos);
1900         else
1901             SetCaretPosition(newPos);
1902
1903         PositionCaret();
1904         SetDefaultStyleToCursorStyle();
1905
1906         return true;
1907     }
1908     else
1909         return false;
1910 }
1911
1912 // Find the caret position for the combination of hit-test flags and character position.
1913 // Returns the caret position and also an indication of where to place the caret (caretLineStart)
1914 // since this is ambiguous (same position used for end of line and start of next).
1915 long wxRichTextCtrl::FindCaretPositionForCharacterPosition(long position, int hitTestFlags, wxRichTextParagraphLayoutBox* container,
1916                                                    bool& caretLineStart)
1917 {
1918     // If end of previous line, and hitTest is wxRICHTEXT_HITTEST_BEFORE,
1919     // we want to be at the end of the last line but with m_caretAtLineStart set to true,
1920     // so we view the caret at the start of the line.
1921     caretLineStart = false;
1922     long caretPosition = position;
1923
1924     if (hitTestFlags & wxRICHTEXT_HITTEST_BEFORE)
1925     {
1926         wxRichTextLine* thisLine = container->GetLineAtPosition(position-1);
1927         wxRichTextRange lineRange;
1928         if (thisLine)
1929             lineRange = thisLine->GetAbsoluteRange();
1930
1931         if (thisLine && (position-1) == lineRange.GetEnd())
1932         {
1933             caretPosition --;
1934             caretLineStart = true;
1935         }
1936         else
1937         {
1938             wxRichTextParagraph* para = container->GetParagraphAtPosition(position);
1939             if (para && para->GetRange().GetStart() == position)
1940                 caretPosition --;
1941         }
1942     }
1943     return caretPosition;
1944 }
1945
1946 /// Move up
1947 bool wxRichTextCtrl::MoveUp(int noLines, int flags)
1948 {
1949     return MoveDown(- noLines, flags);
1950 }
1951
1952 /// Move up
1953 bool wxRichTextCtrl::MoveDown(int noLines, int flags)
1954 {
1955     if (!GetCaret())
1956         return false;
1957
1958     long lineNumber = GetFocusObject()->GetVisibleLineNumber(m_caretPosition, true, m_caretAtLineStart);
1959     wxPoint pt = GetCaret()->GetPosition();
1960     long newLine = lineNumber + noLines;
1961     bool notInThisObject = false;
1962
1963     if (lineNumber != -1)
1964     {
1965         if (noLines > 0)
1966         {
1967             long lastLine = GetFocusObject()->GetVisibleLineNumber(GetFocusObject()->GetOwnRange().GetEnd());
1968             if (newLine > lastLine)
1969                 notInThisObject = true;
1970         }
1971         else
1972         {
1973             if (newLine < 0)
1974                 notInThisObject = true;
1975         }
1976     }
1977
1978     wxRichTextParagraphLayoutBox* container = GetFocusObject();
1979     int hitTestFlags = wxRICHTEXT_HITTEST_NO_NESTED_OBJECTS|wxRICHTEXT_HITTEST_NO_FLOATING_OBJECTS;
1980
1981     if (notInThisObject)
1982     {
1983         // If we know we're navigating out of the current object,
1984         // try to find an object anywhere in the buffer at the new position (up or down a bit)
1985         container = & GetBuffer();
1986         hitTestFlags &= ~wxRICHTEXT_HITTEST_NO_NESTED_OBJECTS;
1987
1988         if (noLines > 0) // going down
1989         {
1990             pt.y = GetFocusObject()->GetPosition().y + GetFocusObject()->GetCachedSize().y + 2;
1991         }
1992         else // going up
1993         {
1994             pt.y = GetFocusObject()->GetPosition().y - 2;
1995         }
1996     }
1997     else
1998     {
1999         wxRichTextLine* lineObj = GetFocusObject()->GetLineForVisibleLineNumber(newLine);
2000         if (lineObj)
2001             pt.y = lineObj->GetAbsolutePosition().y + 2;
2002         else
2003             return false;
2004     }
2005
2006     long newPos = 0;
2007     wxClientDC dc(this);
2008     PrepareDC(dc);
2009     dc.SetFont(GetFont());
2010
2011     wxRichTextObject* hitObj = NULL;
2012     wxRichTextObject* contextObj = NULL;
2013     int hitTest = container->HitTest(dc, pt, newPos, & hitObj, & contextObj, hitTestFlags);
2014
2015     if (hitObj &&
2016         ((hitTest & wxRICHTEXT_HITTEST_NONE) == 0) &&
2017         (! (hitObj == (& m_buffer) && ((hitTest & wxRICHTEXT_HITTEST_OUTSIDE) != 0))) // outside the buffer counts as 'do nothing'
2018         )
2019     {
2020         if (notInThisObject)
2021         {
2022             wxRichTextParagraphLayoutBox* actualContainer = wxDynamicCast(contextObj, wxRichTextParagraphLayoutBox);
2023             if (actualContainer && actualContainer != GetFocusObject() && actualContainer->AcceptsFocus())
2024             {
2025                 SetFocusObject(actualContainer, false /* don't set caret position yet */);
2026
2027                 container = actualContainer;
2028             }
2029         }
2030
2031         bool caretLineStart = true;
2032         long caretPosition = FindCaretPositionForCharacterPosition(newPos, hitTest, container, caretLineStart);
2033         long newSelEnd = caretPosition;
2034         bool extendSel;
2035
2036         if (notInThisObject)
2037             extendSel = false;
2038         else
2039             extendSel = ExtendSelection(m_caretPosition, newSelEnd, flags);
2040
2041         if (!extendSel)
2042             SelectNone();
2043
2044         SetCaretPosition(caretPosition, caretLineStart);
2045         PositionCaret();
2046         SetDefaultStyleToCursorStyle();
2047
2048         return true;
2049     }
2050
2051     return false;
2052 }
2053
2054 /// Move to the end of the paragraph
2055 bool wxRichTextCtrl::MoveToParagraphEnd(int flags)
2056 {
2057     wxRichTextParagraph* para = GetFocusObject()->GetParagraphAtPosition(m_caretPosition, true);
2058     if (para)
2059     {
2060         long newPos = para->GetRange().GetEnd() - 1;
2061         bool extendSel = ExtendSelection(m_caretPosition, newPos, flags);
2062         if (!extendSel)
2063             SelectNone();
2064
2065         SetCaretPosition(newPos);
2066         PositionCaret();
2067         SetDefaultStyleToCursorStyle();
2068
2069         return true;
2070     }
2071
2072     return false;
2073 }
2074
2075 /// Move to the start of the paragraph
2076 bool wxRichTextCtrl::MoveToParagraphStart(int flags)
2077 {
2078     wxRichTextParagraph* para = GetFocusObject()->GetParagraphAtPosition(m_caretPosition, true);
2079     if (para)
2080     {
2081         long newPos = para->GetRange().GetStart() - 1;
2082         bool extendSel = ExtendSelection(m_caretPosition, newPos, flags);
2083         if (!extendSel)
2084             SelectNone();
2085
2086         SetCaretPosition(newPos);
2087         PositionCaret();
2088         SetDefaultStyleToCursorStyle();
2089
2090         return true;
2091     }
2092
2093     return false;
2094 }
2095
2096 /// Move to the end of the line
2097 bool wxRichTextCtrl::MoveToLineEnd(int flags)
2098 {
2099     wxRichTextLine* line = GetVisibleLineForCaretPosition(m_caretPosition);
2100
2101     if (line)
2102     {
2103         wxRichTextRange lineRange = line->GetAbsoluteRange();
2104         long newPos = lineRange.GetEnd();
2105         bool extendSel = ExtendSelection(m_caretPosition, newPos, flags);
2106         if (!extendSel)
2107             SelectNone();
2108
2109         SetCaretPosition(newPos);
2110         PositionCaret();
2111         SetDefaultStyleToCursorStyle();
2112
2113         return true;
2114     }
2115
2116     return false;
2117 }
2118
2119 /// Move to the start of the line
2120 bool wxRichTextCtrl::MoveToLineStart(int flags)
2121 {
2122     wxRichTextLine* line = GetVisibleLineForCaretPosition(m_caretPosition);
2123     if (line)
2124     {
2125         wxRichTextRange lineRange = line->GetAbsoluteRange();
2126         long newPos = lineRange.GetStart()-1;
2127
2128         bool extendSel = ExtendSelection(m_caretPosition, newPos, flags);
2129         if (!extendSel)
2130             SelectNone();
2131
2132         wxRichTextParagraph* para = GetFocusObject()->GetParagraphForLine(line);
2133
2134         SetCaretPosition(newPos, para->GetRange().GetStart() != lineRange.GetStart());
2135         PositionCaret();
2136         SetDefaultStyleToCursorStyle();
2137
2138         return true;
2139     }
2140
2141     return false;
2142 }
2143
2144 /// Move to the start of the buffer
2145 bool wxRichTextCtrl::MoveHome(int flags)
2146 {
2147     if (m_caretPosition != -1)
2148     {
2149         bool extendSel = ExtendSelection(m_caretPosition, -1, flags);
2150         if (!extendSel)
2151             SelectNone();
2152
2153         SetCaretPosition(-1);
2154         PositionCaret();
2155         SetDefaultStyleToCursorStyle();
2156
2157         return true;
2158     }
2159     else
2160         return false;
2161 }
2162
2163 /// Move to the end of the buffer
2164 bool wxRichTextCtrl::MoveEnd(int flags)
2165 {
2166     long endPos = GetFocusObject()->GetOwnRange().GetEnd()-1;
2167
2168     if (m_caretPosition != endPos)
2169     {
2170         bool extendSel = ExtendSelection(m_caretPosition, endPos, flags);
2171         if (!extendSel)
2172             SelectNone();
2173
2174         SetCaretPosition(endPos);
2175         PositionCaret();
2176         SetDefaultStyleToCursorStyle();
2177
2178         return true;
2179     }
2180     else
2181         return false;
2182 }
2183
2184 /// Move noPages pages up
2185 bool wxRichTextCtrl::PageUp(int noPages, int flags)
2186 {
2187     return PageDown(- noPages, flags);
2188 }
2189
2190 /// Move noPages pages down
2191 bool wxRichTextCtrl::PageDown(int noPages, int flags)
2192 {
2193     // Calculate which line occurs noPages * screen height further down.
2194     wxRichTextLine* line = GetVisibleLineForCaretPosition(m_caretPosition);
2195     if (line)
2196     {
2197         wxSize clientSize = GetClientSize();
2198         int newY = line->GetAbsolutePosition().y + noPages*clientSize.y;
2199
2200         wxRichTextLine* newLine = GetFocusObject()->GetLineAtYPosition(newY);
2201         if (newLine)
2202         {
2203             wxRichTextRange lineRange = newLine->GetAbsoluteRange();
2204             long pos = lineRange.GetStart()-1;
2205             if (pos != m_caretPosition)
2206             {
2207                 wxRichTextParagraph* para = GetFocusObject()->GetParagraphForLine(newLine);
2208
2209                 bool extendSel = ExtendSelection(m_caretPosition, pos, flags);
2210                 if (!extendSel)
2211                     SelectNone();
2212
2213                 SetCaretPosition(pos, para->GetRange().GetStart() != lineRange.GetStart());
2214                 PositionCaret();
2215                 SetDefaultStyleToCursorStyle();
2216
2217                 return true;
2218             }
2219         }
2220     }
2221
2222     return false;
2223 }
2224
2225 static bool wxRichTextCtrlIsWhitespace(const wxString& str)
2226 {
2227     return str == wxT(" ") || str == wxT("\t");
2228 }
2229
2230 // Finds the caret position for the next word
2231 long wxRichTextCtrl::FindNextWordPosition(int direction) const
2232 {
2233     long endPos = GetFocusObject()->GetOwnRange().GetEnd();
2234
2235     if (direction > 0)
2236     {
2237         long i = m_caretPosition+1+direction; // +1 for conversion to character pos
2238
2239         // First skip current text to space
2240         while (i < endPos && i > -1)
2241         {
2242             // i is in character, not caret positions
2243             wxString text = GetFocusObject()->GetTextForRange(wxRichTextRange(i, i));
2244             wxRichTextLine* line = GetFocusObject()->GetLineAtPosition(i, false);
2245             if (line && (i == line->GetAbsoluteRange().GetEnd()))
2246             {
2247                 break;
2248             }
2249             else if (!wxRichTextCtrlIsWhitespace(text) && !text.empty())
2250                 i += direction;
2251             else
2252             {
2253                 break;
2254             }
2255         }
2256         while (i < endPos && i > -1)
2257         {
2258             // i is in character, not caret positions
2259             wxString text = GetFocusObject()->GetTextForRange(wxRichTextRange(i, i));
2260             wxRichTextLine* line = GetFocusObject()->GetLineAtPosition(i, false);
2261             if (line && (i == line->GetAbsoluteRange().GetEnd()))
2262                 return wxMax(-1, i);
2263
2264             if (text.empty()) // End of paragraph, or maybe an image
2265                 return wxMax(-1, i - 1);
2266             else if (wxRichTextCtrlIsWhitespace(text) || text.empty())
2267                 i += direction;
2268             else
2269             {
2270                 // Convert to caret position
2271                 return wxMax(-1, i - 1);
2272             }
2273         }
2274         if (i >= endPos)
2275             return endPos-1;
2276         return i-1;
2277     }
2278     else
2279     {
2280         long i = m_caretPosition;
2281
2282         // First skip white space
2283         while (i < endPos && i > -1)
2284         {
2285             // i is in character, not caret positions
2286             wxString text = GetFocusObject()->GetTextForRange(wxRichTextRange(i, i));
2287             wxRichTextLine* line = GetFocusObject()->GetLineAtPosition(i, false);
2288
2289             if (text.empty() || (line && (i == line->GetAbsoluteRange().GetStart()))) // End of paragraph, or maybe an image
2290                 break;
2291             else if (wxRichTextCtrlIsWhitespace(text) || text.empty())
2292                 i += direction;
2293             else
2294                 break;
2295         }
2296         // Next skip current text to space
2297         while (i < endPos && i > -1)
2298         {
2299             // i is in character, not caret positions
2300             wxString text = GetFocusObject()->GetTextForRange(wxRichTextRange(i, i));
2301             wxRichTextLine* line = GetFocusObject()->GetLineAtPosition(i, false);
2302             if (line && line->GetAbsoluteRange().GetStart() == i)
2303                 return i-1;
2304
2305             if (!wxRichTextCtrlIsWhitespace(text) /* && !text.empty() */)
2306                 i += direction;
2307             else
2308             {
2309                 return i;
2310             }
2311         }
2312         if (i < -1)
2313             return -1;
2314         return i;
2315     }
2316 }
2317
2318 /// Move n words left
2319 bool wxRichTextCtrl::WordLeft(int WXUNUSED(n), int flags)
2320 {
2321     long pos = FindNextWordPosition(-1);
2322     if (pos != m_caretPosition)
2323     {
2324         wxRichTextParagraph* para = GetFocusObject()->GetParagraphAtPosition(pos, true);
2325
2326         bool extendSel = ExtendSelection(m_caretPosition, pos, flags);
2327         if (!extendSel)
2328             SelectNone();
2329
2330         SetCaretPosition(pos, para->GetRange().GetStart() != pos);
2331         PositionCaret();
2332         SetDefaultStyleToCursorStyle();
2333
2334         return true;
2335     }
2336
2337     return false;
2338 }
2339
2340 /// Move n words right
2341 bool wxRichTextCtrl::WordRight(int WXUNUSED(n), int flags)
2342 {
2343     long pos = FindNextWordPosition(1);
2344     if (pos != m_caretPosition)
2345     {
2346         wxRichTextParagraph* para = GetFocusObject()->GetParagraphAtPosition(pos, true);
2347
2348         bool extendSel = ExtendSelection(m_caretPosition, pos, flags);
2349         if (!extendSel)
2350             SelectNone();
2351
2352         SetCaretPosition(pos, para->GetRange().GetStart() != pos);
2353         PositionCaret();
2354         SetDefaultStyleToCursorStyle();
2355
2356         return true;
2357     }
2358
2359     return false;
2360 }
2361
2362 /// Sizing
2363 void wxRichTextCtrl::OnSize(wxSizeEvent& event)
2364 {
2365     // Only do sizing optimization for large buffers
2366     if (GetBuffer().GetOwnRange().GetEnd() > m_delayedLayoutThreshold)
2367     {
2368         m_fullLayoutRequired = true;
2369         m_fullLayoutTime = wxGetLocalTimeMillis();
2370         m_fullLayoutSavedPosition = GetFirstVisiblePosition();
2371         LayoutContent(true /* onlyVisibleRect */);
2372     }
2373     else
2374         GetBuffer().Invalidate(wxRICHTEXT_ALL);
2375
2376 #if wxRICHTEXT_BUFFERED_PAINTING
2377     RecreateBuffer();
2378 #endif
2379
2380     event.Skip();
2381 }
2382
2383 // Force any pending layout due to large buffer
2384 void wxRichTextCtrl::ForceDelayedLayout()
2385 {
2386     if (m_fullLayoutRequired)
2387     {
2388         m_fullLayoutRequired = false;
2389         m_fullLayoutTime = 0;
2390         GetBuffer().Invalidate(wxRICHTEXT_ALL);
2391         ShowPosition(m_fullLayoutSavedPosition);
2392         Refresh(false);
2393         Update();
2394     }
2395 }
2396
2397 /// Idle-time processing
2398 void wxRichTextCtrl::OnIdle(wxIdleEvent& event)
2399 {
2400 #if wxRICHTEXT_USE_OWN_CARET
2401     if (((wxRichTextCaret*) GetCaret())->GetNeedsUpdate())
2402     {
2403         ((wxRichTextCaret*) GetCaret())->SetNeedsUpdate(false);
2404         PositionCaret();
2405         GetCaret()->Show();
2406     }
2407 #endif
2408
2409     const int layoutInterval = wxRICHTEXT_DEFAULT_LAYOUT_INTERVAL;
2410
2411     if (m_fullLayoutRequired && (wxGetLocalTimeMillis() > (m_fullLayoutTime + layoutInterval)))
2412     {
2413         m_fullLayoutRequired = false;
2414         m_fullLayoutTime = 0;
2415         GetBuffer().Invalidate(wxRICHTEXT_ALL);
2416         ShowPosition(m_fullLayoutSavedPosition);
2417         Refresh(false);
2418     }
2419
2420     if (m_caretPositionForDefaultStyle != -2)
2421     {
2422         // If the caret position has changed, no longer reflect the default style
2423         // in the UI.
2424         if (GetCaretPosition() != m_caretPositionForDefaultStyle)
2425             m_caretPositionForDefaultStyle = -2;
2426     }
2427
2428     event.Skip();
2429 }
2430
2431 /// Scrolling
2432 void wxRichTextCtrl::OnScroll(wxScrollWinEvent& event)
2433 {
2434 #if wxRICHTEXT_USE_OWN_CARET
2435     if (!((wxRichTextCaret*) GetCaret())->GetNeedsUpdate())
2436     {
2437         GetCaret()->Hide();
2438         ((wxRichTextCaret*) GetCaret())->SetNeedsUpdate();
2439     }
2440 #endif
2441
2442     event.Skip();
2443 }
2444
2445 /// Set up scrollbars, e.g. after a resize
2446 void wxRichTextCtrl::SetupScrollbars(bool atTop)
2447 {
2448     if (IsFrozen())
2449         return;
2450
2451     if (GetBuffer().IsEmpty())
2452     {
2453         SetScrollbars(0, 0, 0, 0, 0, 0);
2454         return;
2455     }
2456
2457     // TODO: reimplement scrolling so we scroll by line, not by fixed number
2458     // of pixels. See e.g. wxVScrolledWindow for ideas.
2459     int pixelsPerUnit = 5;
2460     wxSize clientSize = GetClientSize();
2461
2462     int maxHeight = GetBuffer().GetCachedSize().y + GetBuffer().GetTopMargin();
2463
2464     // Round up so we have at least maxHeight pixels
2465     int unitsY = (int) (((float)maxHeight/(float)pixelsPerUnit) + 0.5);
2466
2467     int startX = 0, startY = 0;
2468     if (!atTop)
2469         GetViewStart(& startX, & startY);
2470
2471     int maxPositionX = 0;
2472     int maxPositionY = (int) ((((float)(wxMax((unitsY*pixelsPerUnit) - clientSize.y, 0)))/((float)pixelsPerUnit)) + 0.5);
2473
2474     int newStartX = wxMin(maxPositionX, startX);
2475     int newStartY = wxMin(maxPositionY, startY);
2476
2477     int oldPPUX, oldPPUY;
2478     int oldStartX, oldStartY;
2479     int oldVirtualSizeX = 0, oldVirtualSizeY = 0;
2480     GetScrollPixelsPerUnit(& oldPPUX, & oldPPUY);
2481     GetViewStart(& oldStartX, & oldStartY);
2482     GetVirtualSize(& oldVirtualSizeX, & oldVirtualSizeY);
2483     if (oldPPUY > 0)
2484         oldVirtualSizeY /= oldPPUY;
2485
2486     if (oldPPUX == 0 && oldPPUY == pixelsPerUnit && oldVirtualSizeY == unitsY && oldStartX == newStartX && oldStartY == newStartY)
2487         return;
2488
2489     // Don't set scrollbars if there were none before, and there will be none now.
2490     if (oldPPUY != 0 && (oldVirtualSizeY*oldPPUY < clientSize.y) && (unitsY*pixelsPerUnit < clientSize.y))
2491         return;
2492
2493     // Move to previous scroll position if
2494     // possible
2495     SetScrollbars(0, pixelsPerUnit, 0, unitsY, newStartX, newStartY);
2496 }
2497
2498 /// Paint the background
2499 void wxRichTextCtrl::PaintBackground(wxDC& dc)
2500 {
2501     wxColour backgroundColour = GetBackgroundColour();
2502     if (!backgroundColour.IsOk())
2503         backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
2504
2505     // Clear the background
2506     dc.SetBrush(wxBrush(backgroundColour));
2507     dc.SetPen(*wxTRANSPARENT_PEN);
2508     wxRect windowRect(GetClientSize());
2509     windowRect.x -= 2; windowRect.y -= 2;
2510     windowRect.width += 4; windowRect.height += 4;
2511
2512     // We need to shift the rectangle to take into account
2513     // scrolling. Converting device to logical coordinates.
2514     CalcUnscrolledPosition(windowRect.x, windowRect.y, & windowRect.x, & windowRect.y);
2515     dc.DrawRectangle(windowRect);
2516 }
2517
2518 #if wxRICHTEXT_BUFFERED_PAINTING
2519 /// Recreate buffer bitmap if necessary
2520 bool wxRichTextCtrl::RecreateBuffer(const wxSize& size)
2521 {
2522     wxSize sz = size;
2523     if (sz == wxDefaultSize)
2524         sz = GetClientSize();
2525
2526     if (sz.x < 1 || sz.y < 1)
2527         return false;
2528
2529     if (!m_bufferBitmap.IsOk() || m_bufferBitmap.GetWidth() < sz.x || m_bufferBitmap.GetHeight() < sz.y)
2530         m_bufferBitmap = wxBitmap(sz.x, sz.y);
2531     return m_bufferBitmap.IsOk();
2532 }
2533 #endif
2534
2535 // ----------------------------------------------------------------------------
2536 // file IO functions
2537 // ----------------------------------------------------------------------------
2538
2539 bool wxRichTextCtrl::DoLoadFile(const wxString& filename, int fileType)
2540 {
2541     bool success = GetBuffer().LoadFile(filename, (wxRichTextFileType)fileType);
2542     if (success)
2543         m_filename = filename;
2544
2545     DiscardEdits();
2546     SetInsertionPoint(0);
2547     LayoutContent();
2548     PositionCaret();
2549     SetupScrollbars(true);
2550     Refresh(false);
2551     wxTextCtrl::SendTextUpdatedEvent(this);
2552
2553     if (success)
2554         return true;
2555     else
2556     {
2557         wxLogError(_("File couldn't be loaded."));
2558
2559         return false;
2560     }
2561 }
2562
2563 bool wxRichTextCtrl::DoSaveFile(const wxString& filename, int fileType)
2564 {
2565     if (GetBuffer().SaveFile(filename, (wxRichTextFileType)fileType))
2566     {
2567         m_filename = filename;
2568
2569         DiscardEdits();
2570
2571         return true;
2572     }
2573
2574     wxLogError(_("The text couldn't be saved."));
2575
2576     return false;
2577 }
2578
2579 // ----------------------------------------------------------------------------
2580 // wxRichTextCtrl specific functionality
2581 // ----------------------------------------------------------------------------
2582
2583 /// Add a new paragraph of text to the end of the buffer
2584 wxRichTextRange wxRichTextCtrl::AddParagraph(const wxString& text)
2585 {
2586     wxRichTextRange range = GetFocusObject()->AddParagraph(text);
2587     GetBuffer().Invalidate();
2588     LayoutContent();
2589     return range;
2590 }
2591
2592 /// Add an image
2593 wxRichTextRange wxRichTextCtrl::AddImage(const wxImage& image)
2594 {
2595     wxRichTextRange range = GetFocusObject()->AddImage(image);
2596     GetBuffer().Invalidate();
2597     LayoutContent();
2598     return range;
2599 }
2600
2601 // ----------------------------------------------------------------------------
2602 // selection and ranges
2603 // ----------------------------------------------------------------------------
2604
2605 void wxRichTextCtrl::SelectAll()
2606 {
2607     SetSelection(-1, -1);
2608 }
2609
2610 /// Select none
2611 void wxRichTextCtrl::SelectNone()
2612 {
2613     if (m_selection.IsValid())
2614     {
2615         wxRichTextSelection oldSelection = m_selection;
2616
2617         m_selection.Reset();
2618
2619         RefreshForSelectionChange(oldSelection, m_selection);
2620     }
2621     m_selectionAnchor = -2;
2622     m_selectionAnchorObject = NULL;
2623     m_selectionState = wxRichTextCtrlSelectionState_Normal;
2624 }
2625
2626 static bool wxIsWordDelimiter(const wxString& text)
2627 {
2628     return !text.IsEmpty() && !wxIsalnum(text[0]);
2629 }
2630
2631 /// Select the word at the given character position
2632 bool wxRichTextCtrl::SelectWord(long position)
2633 {
2634     if (position < 0 || position > GetFocusObject()->GetOwnRange().GetEnd())
2635         return false;
2636
2637     wxRichTextParagraph* para = GetFocusObject()->GetParagraphAtPosition(position);
2638     if (!para)
2639         return false;
2640
2641     if (position == para->GetRange().GetEnd())
2642         position --;
2643
2644     long positionStart = position;
2645     long positionEnd = position;
2646
2647     for (positionStart = position; positionStart >= para->GetRange().GetStart(); positionStart --)
2648     {
2649         wxString text = GetFocusObject()->GetTextForRange(wxRichTextRange(positionStart, positionStart));
2650         if (wxIsWordDelimiter(text))
2651         {
2652             positionStart ++;
2653             break;
2654         }
2655     }
2656     if (positionStart < para->GetRange().GetStart())
2657         positionStart = para->GetRange().GetStart();
2658
2659     for (positionEnd = position; positionEnd < para->GetRange().GetEnd(); positionEnd ++)
2660     {
2661         wxString text = GetFocusObject()->GetTextForRange(wxRichTextRange(positionEnd, positionEnd));
2662         if (wxIsWordDelimiter(text))
2663         {
2664             positionEnd --;
2665             break;
2666         }
2667     }
2668     if (positionEnd >= para->GetRange().GetEnd())
2669         positionEnd = para->GetRange().GetEnd();
2670
2671     if (positionEnd < positionStart)
2672         return false;
2673
2674     SetSelection(positionStart, positionEnd+1);
2675
2676     if (positionStart >= 0)
2677     {
2678         MoveCaret(positionStart-1, true);
2679         SetDefaultStyleToCursorStyle();
2680     }
2681
2682     return true;
2683 }
2684
2685 wxString wxRichTextCtrl::GetStringSelection() const
2686 {
2687     long from, to;
2688     GetSelection(&from, &to);
2689
2690     return GetRange(from, to);
2691 }
2692
2693 // ----------------------------------------------------------------------------
2694 // hit testing
2695 // ----------------------------------------------------------------------------
2696
2697 wxTextCtrlHitTestResult
2698 wxRichTextCtrl::HitTest(const wxPoint& pt, wxTextCoord *x, wxTextCoord *y) const
2699 {
2700     // implement in terms of the other overload as the native ports typically
2701     // can get the position and not (x, y) pair directly (although wxUniv
2702     // directly gets x and y -- and so overrides this method as well)
2703     long pos;
2704     wxTextCtrlHitTestResult rc = HitTest(pt, &pos);
2705
2706     if ( rc != wxTE_HT_UNKNOWN )
2707     {
2708         PositionToXY(pos, x, y);
2709     }
2710
2711     return rc;
2712 }
2713
2714 wxTextCtrlHitTestResult
2715 wxRichTextCtrl::HitTest(const wxPoint& pt,
2716                         long * pos) const
2717 {
2718     wxClientDC dc((wxRichTextCtrl*) this);
2719     ((wxRichTextCtrl*)this)->PrepareDC(dc);
2720
2721     // Buffer uses logical position (relative to start of buffer)
2722     // so convert
2723     wxPoint pt2 = GetLogicalPoint(pt);
2724
2725     wxRichTextObject* hitObj = NULL;
2726     wxRichTextObject* contextObj = NULL;
2727     int hit = ((wxRichTextCtrl*)this)->GetFocusObject()->HitTest(dc, pt2, *pos, & hitObj, & contextObj, wxRICHTEXT_HITTEST_NO_NESTED_OBJECTS);
2728
2729     if ((hit & wxRICHTEXT_HITTEST_BEFORE) && (hit & wxRICHTEXT_HITTEST_OUTSIDE))
2730         return wxTE_HT_BEFORE;
2731     else if ((hit & wxRICHTEXT_HITTEST_AFTER) && (hit & wxRICHTEXT_HITTEST_OUTSIDE))
2732         return wxTE_HT_BEYOND;
2733     else if (hit & (wxRICHTEXT_HITTEST_BEFORE|wxRICHTEXT_HITTEST_AFTER))
2734         return wxTE_HT_ON_TEXT;
2735
2736     return wxTE_HT_UNKNOWN;
2737 }
2738
2739 wxRichTextParagraphLayoutBox*
2740 wxRichTextCtrl::FindContainerAtPoint(const wxPoint pt, long& position, int& hit, wxRichTextObject* hitObj, int flags/* = 0*/)
2741 {
2742     wxClientDC dc(this);
2743     PrepareDC(dc);
2744     dc.SetFont(GetFont());
2745
2746     wxPoint logicalPt = GetLogicalPoint(pt);
2747
2748     wxRichTextObject* contextObj = NULL;
2749     hit = GetBuffer().HitTest(dc, logicalPt, position, &hitObj, &contextObj, flags);
2750     wxRichTextParagraphLayoutBox* container = wxDynamicCast(contextObj, wxRichTextParagraphLayoutBox);
2751
2752     return container;
2753 }
2754
2755
2756 // ----------------------------------------------------------------------------
2757 // set/get the controls text
2758 // ----------------------------------------------------------------------------
2759
2760 wxString wxRichTextCtrl::DoGetValue() const
2761 {
2762     return GetBuffer().GetText();
2763 }
2764
2765 wxString wxRichTextCtrl::GetRange(long from, long to) const
2766 {
2767     // Public API for range is different from internals
2768     return GetFocusObject()->GetTextForRange(wxRichTextRange(from, to-1));
2769 }
2770
2771 void wxRichTextCtrl::DoSetValue(const wxString& value, int flags)
2772 {
2773     // Don't call Clear here, since it always sends a text updated event
2774     m_buffer.ResetAndClearCommands();
2775     m_buffer.Invalidate(wxRICHTEXT_ALL);
2776     m_caretPosition = -1;
2777     m_caretPositionForDefaultStyle = -2;
2778     m_caretAtLineStart = false;
2779     m_selection.Reset();
2780     m_selectionState = wxRichTextCtrlSelectionState_Normal;
2781
2782     Scroll(0,0);
2783
2784     if (!IsFrozen())
2785     {
2786         LayoutContent();
2787         Refresh(false);
2788     }
2789
2790     if (!value.IsEmpty())
2791     {
2792         // Remove empty paragraph
2793         GetBuffer().Clear();
2794         DoWriteText(value, flags);
2795
2796         // for compatibility, don't move the cursor when doing SetValue()
2797         SetInsertionPoint(0);
2798     }
2799     else
2800     {
2801         // still send an event for consistency
2802         if (flags & SetValue_SendEvent)
2803             wxTextCtrl::SendTextUpdatedEvent(this);
2804     }
2805     DiscardEdits();
2806 }
2807
2808 void wxRichTextCtrl::WriteText(const wxString& value)
2809 {
2810     DoWriteText(value);
2811 }
2812
2813 void wxRichTextCtrl::DoWriteText(const wxString& value, int flags)
2814 {
2815     wxString valueUnix = wxTextFile::Translate(value, wxTextFileType_Unix);
2816
2817     GetFocusObject()->InsertTextWithUndo(& GetBuffer(), m_caretPosition+1, valueUnix, this, wxRICHTEXT_INSERT_WITH_PREVIOUS_PARAGRAPH_STYLE);
2818
2819     if ( flags & SetValue_SendEvent )
2820         wxTextCtrl::SendTextUpdatedEvent(this);
2821 }
2822
2823 void wxRichTextCtrl::AppendText(const wxString& text)
2824 {
2825     SetInsertionPointEnd();
2826
2827     WriteText(text);
2828 }
2829
2830 /// Write an image at the current insertion point
2831 bool wxRichTextCtrl::WriteImage(const wxImage& image, wxBitmapType bitmapType, const wxRichTextAttr& textAttr)
2832 {
2833     wxRichTextImageBlock imageBlock;
2834
2835     wxImage image2 = image;
2836     if (imageBlock.MakeImageBlock(image2, bitmapType))
2837         return WriteImage(imageBlock, textAttr);
2838
2839     return false;
2840 }
2841
2842 bool wxRichTextCtrl::WriteImage(const wxString& filename, wxBitmapType bitmapType, const wxRichTextAttr& textAttr)
2843 {
2844     wxRichTextImageBlock imageBlock;
2845
2846     wxImage image;
2847     if (imageBlock.MakeImageBlock(filename, bitmapType, image, false))
2848         return WriteImage(imageBlock, textAttr);
2849
2850     return false;
2851 }
2852
2853 bool wxRichTextCtrl::WriteImage(const wxRichTextImageBlock& imageBlock, const wxRichTextAttr& textAttr)
2854 {
2855     return GetFocusObject()->InsertImageWithUndo(& GetBuffer(), m_caretPosition+1, imageBlock, this, 0, textAttr);
2856 }
2857
2858 bool wxRichTextCtrl::WriteImage(const wxBitmap& bitmap, wxBitmapType bitmapType, const wxRichTextAttr& textAttr)
2859 {
2860     if (bitmap.IsOk())
2861     {
2862         wxRichTextImageBlock imageBlock;
2863
2864         wxImage image = bitmap.ConvertToImage();
2865         if (image.IsOk() && imageBlock.MakeImageBlock(image, bitmapType))
2866             return WriteImage(imageBlock, textAttr);
2867     }
2868
2869     return false;
2870 }
2871
2872 // Write a text box at the current insertion point.
2873 wxRichTextBox* wxRichTextCtrl::WriteTextBox(const wxRichTextAttr& textAttr)
2874 {
2875     wxRichTextBox* textBox = new wxRichTextBox;
2876     textBox->SetAttributes(textAttr);
2877     textBox->SetParent(& GetBuffer()); // set parent temporarily for AddParagraph to use correct style
2878     textBox->AddParagraph(wxEmptyString);
2879     textBox->SetParent(NULL);
2880
2881     // The object returned is the one actually inserted into the buffer,
2882     // while the original one is deleted.
2883     wxRichTextObject* obj = GetFocusObject()->InsertObjectWithUndo(& GetBuffer(), m_caretPosition+1, textBox, this, wxRICHTEXT_INSERT_WITH_PREVIOUS_PARAGRAPH_STYLE);
2884     wxRichTextBox* box = wxDynamicCast(obj, wxRichTextBox);
2885     return box;
2886 }
2887
2888 // Write a table at the current insertion point, returning the table.
2889 wxRichTextTable* wxRichTextCtrl::WriteTable(int rows, int cols, const wxRichTextAttr& tableAttr, const wxRichTextAttr& cellAttr)
2890 {
2891     wxASSERT(rows > 0 && cols > 0);
2892
2893     if (rows <= 0 || cols <= 0)
2894         return NULL;
2895
2896     wxRichTextTable* table = new wxRichTextTable;
2897     table->SetAttributes(tableAttr);
2898     table->SetParent(& GetBuffer()); // set parent temporarily for AddParagraph to use correct style
2899
2900     table->CreateTable(rows, cols);
2901
2902     table->SetParent(NULL);
2903
2904     int i, j;
2905     for (j = 0; j < rows; j++)
2906     {
2907         for (i = 0; i < cols; i++)
2908         {
2909             table->GetCell(j, i)->GetAttributes() = cellAttr;
2910         }
2911     }
2912
2913     // The object returned is the one actually inserted into the buffer,
2914     // while the original one is deleted.
2915     wxRichTextObject* obj = GetFocusObject()->InsertObjectWithUndo(& GetBuffer(), m_caretPosition+1, table, this, wxRICHTEXT_INSERT_WITH_PREVIOUS_PARAGRAPH_STYLE);
2916     wxRichTextTable* tableResult = wxDynamicCast(obj, wxRichTextTable);
2917     return tableResult;
2918 }
2919
2920
2921 /// Insert a newline (actually paragraph) at the current insertion point.
2922 bool wxRichTextCtrl::Newline()
2923 {
2924     return GetFocusObject()->InsertNewlineWithUndo(& GetBuffer(), m_caretPosition+1, this, wxRICHTEXT_INSERT_WITH_PREVIOUS_PARAGRAPH_STYLE);
2925 }
2926
2927 /// Insert a line break at the current insertion point.
2928 bool wxRichTextCtrl::LineBreak()
2929 {
2930     wxString text;
2931     text = wxRichTextLineBreakChar;
2932     return GetFocusObject()->InsertTextWithUndo(& GetBuffer(), m_caretPosition+1, text, this);
2933 }
2934
2935 // ----------------------------------------------------------------------------
2936 // Clipboard operations
2937 // ----------------------------------------------------------------------------
2938
2939 void wxRichTextCtrl::Copy()
2940 {
2941     if (CanCopy())
2942     {
2943         wxRichTextRange range = GetInternalSelectionRange();
2944         GetBuffer().CopyToClipboard(range);
2945     }
2946 }
2947
2948 void wxRichTextCtrl::Cut()
2949 {
2950     if (CanCut())
2951     {
2952         wxRichTextRange range = GetInternalSelectionRange();
2953         GetBuffer().CopyToClipboard(range);
2954
2955         DeleteSelectedContent();
2956         LayoutContent();
2957         Refresh(false);
2958     }
2959 }
2960
2961 void wxRichTextCtrl::Paste()
2962 {
2963     if (CanPaste())
2964     {
2965         BeginBatchUndo(_("Paste"));
2966
2967         long newPos = m_caretPosition;
2968         DeleteSelectedContent(& newPos);
2969
2970         GetBuffer().PasteFromClipboard(newPos);
2971
2972         EndBatchUndo();
2973     }
2974 }
2975
2976 void wxRichTextCtrl::DeleteSelection()
2977 {
2978     if (CanDeleteSelection())
2979     {
2980         DeleteSelectedContent();
2981     }
2982 }
2983
2984 bool wxRichTextCtrl::HasSelection() const
2985 {
2986     return (m_selection.IsValid() && m_selection.GetContainer() == GetFocusObject());
2987 }
2988
2989 bool wxRichTextCtrl::HasUnfocusedSelection() const
2990 {
2991     return m_selection.IsValid();
2992 }
2993
2994 bool wxRichTextCtrl::CanCopy() const
2995 {
2996     // Can copy if there's a selection
2997     return HasSelection();
2998 }
2999
3000 bool wxRichTextCtrl::CanCut() const
3001 {
3002     return HasSelection() && IsEditable();
3003 }
3004
3005 bool wxRichTextCtrl::CanPaste() const
3006 {
3007     if ( !IsEditable() )
3008         return false;
3009
3010     return GetBuffer().CanPasteFromClipboard();
3011 }
3012
3013 bool wxRichTextCtrl::CanDeleteSelection() const
3014 {
3015     return HasSelection() && IsEditable();
3016 }
3017
3018
3019 // ----------------------------------------------------------------------------
3020 // Accessors
3021 // ----------------------------------------------------------------------------
3022
3023 void wxRichTextCtrl::SetContextMenu(wxMenu* menu)
3024 {
3025     if (m_contextMenu && m_contextMenu != menu)
3026         delete m_contextMenu;
3027     m_contextMenu = menu;
3028 }
3029
3030 void wxRichTextCtrl::SetEditable(bool editable)
3031 {
3032     m_editable = editable;
3033 }
3034
3035 void wxRichTextCtrl::SetInsertionPoint(long pos)
3036 {
3037     SelectNone();
3038
3039     m_caretPosition = pos - 1;
3040
3041     PositionCaret();
3042
3043     SetDefaultStyleToCursorStyle();
3044 }
3045
3046 void wxRichTextCtrl::SetInsertionPointEnd()
3047 {
3048     long pos = GetLastPosition();
3049     SetInsertionPoint(pos);
3050 }
3051
3052 long wxRichTextCtrl::GetInsertionPoint() const
3053 {
3054     return m_caretPosition+1;
3055 }
3056
3057 wxTextPos wxRichTextCtrl::GetLastPosition() const
3058 {
3059     return GetFocusObject()->GetOwnRange().GetEnd();
3060 }
3061
3062 // If the return values from and to are the same, there is no
3063 // selection.
3064 void wxRichTextCtrl::GetSelection(long* from, long* to) const
3065 {
3066     if (m_selection.IsValid())
3067     {
3068         *from = m_selection.GetRange().GetStart();
3069         *to = m_selection.GetRange().GetEnd();
3070         (*to) ++;
3071     }
3072     else
3073     {
3074         *from = -2;
3075         *to = -2;
3076     }
3077 }
3078
3079 bool wxRichTextCtrl::IsEditable() const
3080 {
3081     return m_editable;
3082 }
3083
3084 // ----------------------------------------------------------------------------
3085 // selection
3086 // ----------------------------------------------------------------------------
3087
3088 void wxRichTextCtrl::SetSelection(long from, long to)
3089 {
3090     // if from and to are both -1, it means (in wxWidgets) that all text should
3091     // be selected.
3092     if ( (from == -1) && (to == -1) )
3093     {
3094         from = 0;
3095         to = GetLastPosition()+1;
3096     }
3097
3098     if (from == to)
3099     {
3100         SelectNone();
3101     }
3102     else
3103     {
3104         wxRichTextSelection oldSelection = m_selection;
3105
3106         m_selectionAnchor = from-1;
3107         m_selectionAnchorObject = NULL;
3108         m_selection.Set(wxRichTextRange(from, to-1), GetFocusObject());
3109
3110         m_caretPosition = wxMax(-1, to-1);
3111
3112         RefreshForSelectionChange(oldSelection, m_selection);
3113         PositionCaret();
3114     }
3115 }
3116
3117 // ----------------------------------------------------------------------------
3118 // Editing
3119 // ----------------------------------------------------------------------------
3120
3121 void wxRichTextCtrl::Replace(long from, long to,
3122                              const wxString& value)
3123 {
3124     BeginBatchUndo(_("Replace"));
3125
3126     SetSelection(from, to);
3127
3128     wxRichTextAttr attr = GetDefaultStyle();
3129
3130     DeleteSelectedContent();
3131
3132     SetDefaultStyle(attr);
3133
3134     DoWriteText(value, SetValue_SelectionOnly);
3135
3136     EndBatchUndo();
3137 }
3138
3139 void wxRichTextCtrl::Remove(long from, long to)
3140 {
3141     SelectNone();
3142
3143     GetFocusObject()->DeleteRangeWithUndo(wxRichTextRange(from, to-1), this, & GetBuffer());
3144
3145     LayoutContent();
3146     if (!IsFrozen())
3147         Refresh(false);
3148 }
3149
3150 bool wxRichTextCtrl::IsModified() const
3151 {
3152     return m_buffer.IsModified();
3153 }
3154
3155 void wxRichTextCtrl::MarkDirty()
3156 {
3157     m_buffer.Modify(true);
3158 }
3159
3160 void wxRichTextCtrl::DiscardEdits()
3161 {
3162     m_caretPositionForDefaultStyle = -2;
3163     m_buffer.Modify(false);
3164     m_buffer.GetCommandProcessor()->ClearCommands();
3165 }
3166
3167 int wxRichTextCtrl::GetNumberOfLines() const
3168 {
3169     return GetFocusObject()->GetParagraphCount();
3170 }
3171
3172 // ----------------------------------------------------------------------------
3173 // Positions <-> coords
3174 // ----------------------------------------------------------------------------
3175
3176 long wxRichTextCtrl::XYToPosition(long x, long y) const
3177 {
3178     return GetFocusObject()->XYToPosition(x, y);
3179 }
3180
3181 bool wxRichTextCtrl::PositionToXY(long pos, long *x, long *y) const
3182 {
3183     return GetFocusObject()->PositionToXY(pos, x, y);
3184 }
3185
3186 // ----------------------------------------------------------------------------
3187 //
3188 // ----------------------------------------------------------------------------
3189
3190 void wxRichTextCtrl::ShowPosition(long pos)
3191 {
3192     if (!IsPositionVisible(pos))
3193         ScrollIntoView(pos-1, WXK_DOWN);
3194 }
3195
3196 int wxRichTextCtrl::GetLineLength(long lineNo) const
3197 {
3198     return GetFocusObject()->GetParagraphLength(lineNo);
3199 }
3200
3201 wxString wxRichTextCtrl::GetLineText(long lineNo) const
3202 {
3203     return GetFocusObject()->GetParagraphText(lineNo);
3204 }
3205
3206 // ----------------------------------------------------------------------------
3207 // Undo/redo
3208 // ----------------------------------------------------------------------------
3209
3210 void wxRichTextCtrl::Undo()
3211 {
3212     if (CanUndo())
3213     {
3214         GetCommandProcessor()->Undo();
3215     }
3216 }
3217
3218 void wxRichTextCtrl::Redo()
3219 {
3220     if (CanRedo())
3221     {
3222         GetCommandProcessor()->Redo();
3223     }
3224 }
3225
3226 bool wxRichTextCtrl::CanUndo() const
3227 {
3228     return GetCommandProcessor()->CanUndo() && IsEditable();
3229 }
3230
3231 bool wxRichTextCtrl::CanRedo() const
3232 {
3233     return GetCommandProcessor()->CanRedo() && IsEditable();
3234 }
3235
3236 // ----------------------------------------------------------------------------
3237 // implementation details
3238 // ----------------------------------------------------------------------------
3239
3240 void wxRichTextCtrl::Command(wxCommandEvent& event)
3241 {
3242     SetValue(event.GetString());
3243     GetEventHandler()->ProcessEvent(event);
3244 }
3245
3246 void wxRichTextCtrl::OnDropFiles(wxDropFilesEvent& event)
3247 {
3248     // By default, load the first file into the text window.
3249     if (event.GetNumberOfFiles() > 0)
3250     {
3251         LoadFile(event.GetFiles()[0]);
3252     }
3253 }
3254
3255 wxSize wxRichTextCtrl::DoGetBestSize() const
3256 {
3257     return wxSize(10, 10);
3258 }
3259
3260 // ----------------------------------------------------------------------------
3261 // standard handlers for standard edit menu events
3262 // ----------------------------------------------------------------------------
3263
3264 void wxRichTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
3265 {
3266     Cut();
3267 }
3268
3269 void wxRichTextCtrl::OnClear(wxCommandEvent& WXUNUSED(event))
3270 {
3271     DeleteSelection();
3272 }
3273
3274 void wxRichTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
3275 {
3276     Copy();
3277 }
3278
3279 void wxRichTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
3280 {
3281     Paste();
3282 }
3283
3284 void wxRichTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
3285 {
3286     Undo();
3287 }
3288
3289 void wxRichTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
3290 {
3291     Redo();
3292 }
3293
3294 void wxRichTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
3295 {
3296     event.Enable( CanCut() );
3297 }
3298
3299 void wxRichTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
3300 {
3301     event.Enable( CanCopy() );
3302 }
3303
3304 void wxRichTextCtrl::OnUpdateClear(wxUpdateUIEvent& event)
3305 {
3306     event.Enable( CanDeleteSelection() );
3307 }
3308
3309 void wxRichTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
3310 {
3311     event.Enable( CanPaste() );
3312 }
3313
3314 void wxRichTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
3315 {
3316     event.Enable( CanUndo() );
3317     event.SetText( GetCommandProcessor()->GetUndoMenuLabel() );
3318 }
3319
3320 void wxRichTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
3321 {
3322     event.Enable( CanRedo() );
3323     event.SetText( GetCommandProcessor()->GetRedoMenuLabel() );
3324 }
3325
3326 void wxRichTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
3327 {
3328     if (GetLastPosition() > 0)
3329         SelectAll();
3330 }
3331
3332 void wxRichTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
3333 {
3334     event.Enable(GetLastPosition() > 0);
3335 }
3336
3337 void wxRichTextCtrl::OnProperties(wxCommandEvent& event)
3338 {
3339     int idx = event.GetId() - wxID_RICHTEXT_PROPERTIES1;
3340     if (idx >= 0 && idx < m_contextMenuPropertiesInfo.GetCount())
3341     {
3342         wxRichTextObject* obj = m_contextMenuPropertiesInfo.GetObject(idx);
3343         if (obj && CanEditProperties(obj))
3344             EditProperties(obj, this);
3345
3346         m_contextMenuPropertiesInfo.Clear();
3347     }
3348 }
3349
3350 void wxRichTextCtrl::OnUpdateProperties(wxUpdateUIEvent& event)
3351 {
3352     int idx = event.GetId() - wxID_RICHTEXT_PROPERTIES1;
3353     event.Enable(idx >= 0 && idx < m_contextMenuPropertiesInfo.GetCount());
3354 }
3355
3356 void wxRichTextCtrl::OnContextMenu(wxContextMenuEvent& event)
3357 {
3358     if (event.GetEventObject() != this)
3359     {
3360         event.Skip();
3361         return;
3362     }
3363
3364     ShowContextMenu(m_contextMenu, event.GetPosition());
3365 }
3366
3367 // Prepares the context menu, adding appropriate property-editing commands.
3368 // Returns the number of property commands added.
3369 int wxRichTextCtrl::PrepareContextMenu(wxMenu* menu, const wxPoint& pt, bool addPropertyCommands)
3370 {
3371     wxClientDC dc(this);
3372     PrepareDC(dc);
3373     dc.SetFont(GetFont());
3374
3375     m_contextMenuPropertiesInfo.Clear();
3376
3377     long position = 0;
3378     wxRichTextObject* hitObj = NULL;
3379     wxRichTextObject* contextObj = NULL;
3380     if (pt != wxDefaultPosition)
3381     {
3382         wxPoint logicalPt = GetLogicalPoint(ScreenToClient(pt));
3383         int hit = GetBuffer().HitTest(dc, logicalPt, position, & hitObj, & contextObj);
3384
3385         if (hit == wxRICHTEXT_HITTEST_ON || hit == wxRICHTEXT_HITTEST_BEFORE || hit == wxRICHTEXT_HITTEST_AFTER)
3386         {
3387             wxRichTextParagraphLayoutBox* actualContainer = wxDynamicCast(contextObj, wxRichTextParagraphLayoutBox);
3388             if (hitObj && actualContainer)
3389             {
3390                 if (actualContainer->AcceptsFocus())
3391                 {
3392                     SetFocusObject(actualContainer, false /* don't set caret position yet */);
3393                     SetCaretPositionAfterClick(actualContainer, position, hit);
3394                 }
3395
3396                 if (addPropertyCommands)
3397                     m_contextMenuPropertiesInfo.AddItems(this, actualContainer, hitObj);
3398             }
3399             else
3400             {
3401                 if (addPropertyCommands)
3402                     m_contextMenuPropertiesInfo.AddItems(this, GetFocusObject(), NULL);
3403             }
3404         }
3405         else
3406         {
3407             if (addPropertyCommands)
3408                 m_contextMenuPropertiesInfo.AddItems(this, GetFocusObject(), NULL);
3409         }
3410     }
3411     else
3412     {
3413         // Invoked from the keyboard, so don't set the caret position and don't use the event
3414         // position
3415         hitObj = GetFocusObject()->GetLeafObjectAtPosition(m_caretPosition+1);
3416         if (hitObj)
3417             contextObj = hitObj->GetParentContainer();
3418         else
3419             contextObj = GetFocusObject();
3420
3421         wxRichTextParagraphLayoutBox* actualContainer = wxDynamicCast(contextObj, wxRichTextParagraphLayoutBox);
3422         if (hitObj && actualContainer)
3423         {
3424             if (addPropertyCommands)
3425                 m_contextMenuPropertiesInfo.AddItems(this, actualContainer, hitObj);
3426         }
3427         else
3428         {
3429             if (addPropertyCommands)
3430                 m_contextMenuPropertiesInfo.AddItems(this, GetFocusObject(), NULL);
3431         }
3432     }
3433
3434     if (menu)
3435     {
3436         if (addPropertyCommands)
3437             m_contextMenuPropertiesInfo.AddMenuItems(menu);
3438         return m_contextMenuPropertiesInfo.GetCount();
3439     }
3440     else
3441         return 0;
3442 }
3443
3444 // Shows the context menu, adding appropriate property-editing commands
3445 bool wxRichTextCtrl::ShowContextMenu(wxMenu* menu, const wxPoint& pt, bool addPropertyCommands)
3446 {
3447     if (menu)
3448     {
3449         PrepareContextMenu(menu, pt, addPropertyCommands);
3450         PopupMenu(menu);
3451         return true;
3452     }
3453     else
3454         return false;
3455 }
3456
3457 bool wxRichTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
3458 {
3459     return GetFocusObject()->SetStyle(wxRichTextRange(start, end-1), wxRichTextAttr(style));
3460 }
3461
3462 bool wxRichTextCtrl::SetStyle(long start, long end, const wxRichTextAttr& style)
3463 {
3464     return GetFocusObject()->SetStyle(wxRichTextRange(start, end-1), style);
3465 }
3466
3467 bool wxRichTextCtrl::SetStyle(const wxRichTextRange& range, const wxTextAttr& style)
3468 {
3469     return GetFocusObject()->SetStyle(range.ToInternal(), wxRichTextAttr(style));
3470 }
3471
3472 bool wxRichTextCtrl::SetStyle(const wxRichTextRange& range, const wxRichTextAttr& style)
3473 {
3474     return GetFocusObject()->SetStyle(range.ToInternal(), style);
3475 }
3476
3477 void wxRichTextCtrl::SetStyle(wxRichTextObject *obj, const wxRichTextAttr& textAttr)
3478 {
3479     GetFocusObject()->SetStyle(obj, textAttr);
3480 }
3481
3482 // extended style setting operation with flags including:
3483 // wxRICHTEXT_SETSTYLE_WITH_UNDO, wxRICHTEXT_SETSTYLE_OPTIMIZE, wxRICHTEXT_SETSTYLE_PARAGRAPHS_ONLY.
3484 // see richtextbuffer.h for more details.
3485
3486 bool wxRichTextCtrl::SetStyleEx(const wxRichTextRange& range, const wxRichTextAttr& style, int flags)
3487 {
3488     return GetFocusObject()->SetStyle(range.ToInternal(), style, flags);
3489 }
3490
3491 bool wxRichTextCtrl::SetDefaultStyle(const wxTextAttr& style)
3492 {
3493     return GetBuffer().SetDefaultStyle(style);
3494 }
3495
3496 bool wxRichTextCtrl::SetDefaultStyle(const wxRichTextAttr& style)
3497 {
3498     wxRichTextAttr attr1(style);
3499     attr1.GetTextBoxAttr().Reset();
3500     return GetBuffer().SetDefaultStyle(attr1);
3501 }
3502
3503 const wxRichTextAttr& wxRichTextCtrl::GetDefaultStyleEx() const
3504 {
3505     return GetBuffer().GetDefaultStyle();
3506 }
3507
3508 bool wxRichTextCtrl::GetStyle(long position, wxTextAttr& style)
3509 {
3510     wxRichTextAttr attr;
3511     if (GetFocusObject()->GetStyle(position, attr))
3512     {
3513         style = attr;
3514         return true;
3515     }
3516     else
3517         return false;
3518 }
3519
3520 bool wxRichTextCtrl::GetStyle(long position, wxRichTextAttr& style)
3521 {
3522     return GetFocusObject()->GetStyle(position, style);
3523 }
3524
3525 bool wxRichTextCtrl::GetStyle(long position, wxRichTextAttr& style, wxRichTextParagraphLayoutBox* container)
3526 {
3527     wxRichTextAttr attr;
3528     if (container->GetStyle(position, attr))
3529     {
3530         style = attr;
3531         return true;
3532     }
3533     else
3534         return false;
3535 }
3536
3537 // get the common set of styles for the range
3538 bool wxRichTextCtrl::GetStyleForRange(const wxRichTextRange& range, wxTextAttr& style)
3539 {
3540     wxRichTextAttr attr;
3541     if (GetFocusObject()->GetStyleForRange(range.ToInternal(), attr))
3542     {
3543         style = attr;
3544         return true;
3545     }
3546     else
3547         return false;
3548 }
3549
3550 bool wxRichTextCtrl::GetStyleForRange(const wxRichTextRange& range, wxRichTextAttr& style)
3551 {
3552     return GetFocusObject()->GetStyleForRange(range.ToInternal(), style);
3553 }
3554
3555 bool wxRichTextCtrl::GetStyleForRange(const wxRichTextRange& range, wxRichTextAttr& style, wxRichTextParagraphLayoutBox* container)
3556 {
3557     return container->GetStyleForRange(range.ToInternal(), style);
3558 }
3559
3560 /// Get the content (uncombined) attributes for this position.
3561 bool wxRichTextCtrl::GetUncombinedStyle(long position, wxRichTextAttr& style)
3562 {
3563     return GetFocusObject()->GetUncombinedStyle(position, style);
3564 }
3565
3566 /// Get the content (uncombined) attributes for this position.
3567 bool wxRichTextCtrl::GetUncombinedStyle(long position, wxRichTextAttr& style, wxRichTextParagraphLayoutBox* container)
3568 {
3569     return container->GetUncombinedStyle(position, style);
3570 }
3571
3572 /// Set font, and also the buffer attributes
3573 bool wxRichTextCtrl::SetFont(const wxFont& font)
3574 {
3575     wxControl::SetFont(font);
3576
3577     wxRichTextAttr attr = GetBuffer().GetAttributes();
3578     attr.SetFont(font);
3579     GetBuffer().SetBasicStyle(attr);
3580
3581     GetBuffer().Invalidate(wxRICHTEXT_ALL);
3582     Refresh(false);
3583
3584     return true;
3585 }
3586
3587 /// Transform logical to physical
3588 wxPoint wxRichTextCtrl::GetPhysicalPoint(const wxPoint& ptLogical) const
3589 {
3590     wxPoint pt;
3591     CalcScrolledPosition(ptLogical.x, ptLogical.y, & pt.x, & pt.y);
3592
3593     return pt;
3594 }
3595
3596 /// Transform physical to logical
3597 wxPoint wxRichTextCtrl::GetLogicalPoint(const wxPoint& ptPhysical) const
3598 {
3599     wxPoint pt;
3600     CalcUnscrolledPosition(ptPhysical.x, ptPhysical.y, & pt.x, & pt.y);
3601
3602     return pt;
3603 }
3604
3605 /// Position the caret
3606 void wxRichTextCtrl::PositionCaret(wxRichTextParagraphLayoutBox* container)
3607 {
3608     if (!GetCaret())
3609         return;
3610
3611     //wxLogDebug(wxT("PositionCaret"));
3612
3613     wxRect caretRect;
3614     if (GetCaretPositionForIndex(GetCaretPosition(), caretRect, container))
3615     {
3616         wxPoint newPt = caretRect.GetPosition();
3617         wxSize newSz = caretRect.GetSize();
3618         wxPoint pt = GetPhysicalPoint(newPt);
3619         if (GetCaret()->GetPosition() != pt || GetCaret()->GetSize() != newSz)
3620         {
3621             GetCaret()->Hide();
3622             if (GetCaret()->GetSize() != newSz)
3623                 GetCaret()->SetSize(newSz);
3624
3625             // Adjust size so the caret size and position doesn't appear in the margins
3626             if (((pt.y + newSz.y) <= GetBuffer().GetTopMargin()) || (pt.y >= (GetClientSize().y - GetBuffer().GetBottomMargin())))
3627             {
3628                 pt.x = -200;
3629                 pt.y = -200;
3630             }
3631             else if (pt.y < GetBuffer().GetTopMargin() && (pt.y + newSz.y) > GetBuffer().GetTopMargin())
3632             {
3633                 newSz.y -= (GetBuffer().GetTopMargin() - pt.y);
3634                 if (newSz.y > 0)
3635                 {
3636                     pt.y = GetBuffer().GetTopMargin();
3637                     GetCaret()->SetSize(newSz);
3638                 }
3639             }
3640             else if (pt.y < (GetClientSize().y - GetBuffer().GetBottomMargin()) && (pt.y + newSz.y) > (GetClientSize().y - GetBuffer().GetBottomMargin()))
3641             {
3642                 newSz.y = GetClientSize().y - GetBuffer().GetBottomMargin() - pt.y;
3643                 GetCaret()->SetSize(newSz);
3644             }
3645
3646             GetCaret()->Move(pt);
3647             GetCaret()->Show();
3648         }
3649     }
3650 }
3651
3652 /// Get the caret height and position for the given character position
3653 bool wxRichTextCtrl::GetCaretPositionForIndex(long position, wxRect& rect, wxRichTextParagraphLayoutBox* container)
3654 {
3655     wxClientDC dc(this);
3656     dc.SetFont(GetFont());
3657
3658     PrepareDC(dc);
3659
3660     wxPoint pt;
3661     int height = 0;
3662
3663     if (!container)
3664         container = GetFocusObject();
3665
3666     if (container->FindPosition(dc, position, pt, & height, m_caretAtLineStart))
3667     {
3668         // Caret height can't be zero
3669         if (height == 0)
3670             height = dc.GetCharHeight();
3671
3672         rect = wxRect(pt, wxSize(wxRICHTEXT_DEFAULT_CARET_WIDTH, height));
3673         return true;
3674     }
3675
3676     return false;
3677 }
3678
3679 /// Gets the line for the visible caret position. If the caret is
3680 /// shown at the very end of the line, it means the next character is actually
3681 /// on the following line. So let's get the line we're expecting to find
3682 /// if this is the case.
3683 wxRichTextLine* wxRichTextCtrl::GetVisibleLineForCaretPosition(long caretPosition) const
3684 {
3685     wxRichTextLine* line = GetFocusObject()->GetLineAtPosition(caretPosition, true);
3686     wxRichTextParagraph* para = GetFocusObject()->GetParagraphAtPosition(caretPosition, true);
3687     if (line)
3688     {
3689         wxRichTextRange lineRange = line->GetAbsoluteRange();
3690         if (caretPosition == lineRange.GetStart()-1 &&
3691             (para->GetRange().GetStart() != lineRange.GetStart()))
3692         {
3693             if (!m_caretAtLineStart)
3694                 line = GetFocusObject()->GetLineAtPosition(caretPosition-1, true);
3695         }
3696     }
3697     return line;
3698 }
3699
3700
3701 /// Move the caret to the given character position
3702 bool wxRichTextCtrl::MoveCaret(long pos, bool showAtLineStart, wxRichTextParagraphLayoutBox* container)
3703 {
3704     if (GetBuffer().IsDirty())
3705         LayoutContent();
3706
3707     if (!container)
3708         container = GetFocusObject();
3709
3710     if (pos <= container->GetOwnRange().GetEnd())
3711     {
3712         SetCaretPosition(pos, showAtLineStart);
3713
3714         PositionCaret(container);
3715
3716         return true;
3717     }
3718     else
3719         return false;
3720 }
3721
3722 /// Layout the buffer: which we must do before certain operations, such as
3723 /// setting the caret position.
3724 bool wxRichTextCtrl::LayoutContent(bool onlyVisibleRect)
3725 {
3726     if (GetBuffer().IsDirty() || onlyVisibleRect)
3727     {
3728         wxRect availableSpace(GetClientSize());
3729         if (availableSpace.width == 0)
3730             availableSpace.width = 10;
3731         if (availableSpace.height == 0)
3732             availableSpace.height = 10;
3733
3734         int flags = wxRICHTEXT_FIXED_WIDTH|wxRICHTEXT_VARIABLE_HEIGHT;
3735         if (onlyVisibleRect)
3736         {
3737             flags |= wxRICHTEXT_LAYOUT_SPECIFIED_RECT;
3738             availableSpace.SetPosition(GetLogicalPoint(wxPoint(0, 0)));
3739         }
3740
3741         wxClientDC dc(this);
3742         dc.SetFont(GetFont());
3743
3744         PrepareDC(dc);
3745
3746         GetBuffer().Defragment();
3747         GetBuffer().UpdateRanges();     // If items were deleted, ranges need recalculation
3748         GetBuffer().Layout(dc, availableSpace, availableSpace, flags);
3749         GetBuffer().Invalidate(wxRICHTEXT_NONE);
3750
3751         if (!IsFrozen())
3752             SetupScrollbars();
3753     }
3754
3755     return true;
3756 }
3757
3758 /// Is all of the selection, or the current caret position, bold?
3759 bool wxRichTextCtrl::IsSelectionBold()
3760 {
3761     if (HasSelection())
3762     {
3763         wxRichTextAttr attr;
3764         wxRichTextRange range = GetSelectionRange();
3765         attr.SetFlags(wxTEXT_ATTR_FONT_WEIGHT);
3766         attr.SetFontWeight(wxFONTWEIGHT_BOLD);
3767
3768         return HasCharacterAttributes(range, attr);
3769     }
3770     else
3771     {
3772         // If no selection, then we need to combine current style with default style
3773         // to see what the effect would be if we started typing.
3774         wxRichTextAttr attr;
3775         attr.SetFlags(wxTEXT_ATTR_FONT_WEIGHT);
3776
3777         long pos = GetAdjustedCaretPosition(GetCaretPosition());
3778         if (GetStyle(pos, attr))
3779         {
3780             if (IsDefaultStyleShowing())
3781                 wxRichTextApplyStyle(attr, GetDefaultStyleEx());
3782             return attr.GetFontWeight() == wxFONTWEIGHT_BOLD;
3783         }
3784     }
3785     return false;
3786 }
3787
3788 /// Is all of the selection, or the current caret position, italics?
3789 bool wxRichTextCtrl::IsSelectionItalics()
3790 {
3791     if (HasSelection())
3792     {
3793         wxRichTextRange range = GetSelectionRange();
3794         wxRichTextAttr attr;
3795         attr.SetFlags(wxTEXT_ATTR_FONT_ITALIC);
3796         attr.SetFontStyle(wxFONTSTYLE_ITALIC);
3797
3798         return HasCharacterAttributes(range, attr);
3799     }
3800     else
3801     {
3802         // If no selection, then we need to combine current style with default style
3803         // to see what the effect would be if we started typing.
3804         wxRichTextAttr attr;
3805         attr.SetFlags(wxTEXT_ATTR_FONT_ITALIC);
3806
3807         long pos = GetAdjustedCaretPosition(GetCaretPosition());
3808         if (GetStyle(pos, attr))
3809         {
3810             if (IsDefaultStyleShowing())
3811                 wxRichTextApplyStyle(attr, GetDefaultStyleEx());
3812             return attr.GetFontStyle() == wxFONTSTYLE_ITALIC;
3813         }
3814     }
3815     return false;
3816 }
3817
3818 /// Is all of the selection, or the current caret position, underlined?
3819 bool wxRichTextCtrl::IsSelectionUnderlined()
3820 {
3821     if (HasSelection())
3822     {
3823         wxRichTextRange range = GetSelectionRange();
3824         wxRichTextAttr attr;
3825         attr.SetFlags(wxTEXT_ATTR_FONT_UNDERLINE);
3826         attr.SetFontUnderlined(true);
3827
3828         return HasCharacterAttributes(range, attr);
3829     }
3830     else
3831     {
3832         // If no selection, then we need to combine current style with default style
3833         // to see what the effect would be if we started typing.
3834         wxRichTextAttr attr;
3835         attr.SetFlags(wxTEXT_ATTR_FONT_UNDERLINE);
3836         long pos = GetAdjustedCaretPosition(GetCaretPosition());
3837
3838         if (GetStyle(pos, attr))
3839         {
3840             if (IsDefaultStyleShowing())
3841                 wxRichTextApplyStyle(attr, GetDefaultStyleEx());
3842             return attr.GetFontUnderlined();
3843         }
3844     }
3845     return false;
3846 }
3847
3848 /// Does all of the selection, or the current caret position, have this wxTextAttrEffects flag(s)?
3849 bool wxRichTextCtrl::DoesSelectionHaveTextEffectFlag(int flag)
3850 {
3851     wxRichTextAttr attr;
3852     attr.SetFlags(wxTEXT_ATTR_EFFECTS);
3853     attr.SetTextEffectFlags(flag);
3854     attr.SetTextEffects(flag);
3855
3856     if (HasSelection())
3857     {
3858         return HasCharacterAttributes(GetSelectionRange(), attr);
3859     }
3860     else
3861     {
3862         // If no selection, then we need to combine current style with default style
3863         // to see what the effect would be if we started typing.
3864         long pos = GetAdjustedCaretPosition(GetCaretPosition());
3865         if (GetStyle(pos, attr))
3866         {
3867             if (IsDefaultStyleShowing())
3868                 wxRichTextApplyStyle(attr, GetDefaultStyleEx());
3869             return (attr.GetTextEffectFlags() & flag) != 0;
3870         }
3871     }
3872     return false;
3873 }
3874
3875 /// Apply bold to the selection
3876 bool wxRichTextCtrl::ApplyBoldToSelection()
3877 {
3878     wxRichTextAttr attr;
3879     attr.SetFlags(wxTEXT_ATTR_FONT_WEIGHT);
3880     attr.SetFontWeight(IsSelectionBold() ? wxFONTWEIGHT_NORMAL : wxFONTWEIGHT_BOLD);
3881
3882     if (HasSelection())
3883         return SetStyleEx(GetSelectionRange(), attr, wxRICHTEXT_SETSTYLE_WITH_UNDO|wxRICHTEXT_SETSTYLE_OPTIMIZE|wxRICHTEXT_SETSTYLE_CHARACTERS_ONLY);
3884     else
3885     {
3886         wxRichTextAttr current = GetDefaultStyleEx();
3887         current.Apply(attr);
3888         SetAndShowDefaultStyle(current);
3889     }
3890     return true;
3891 }
3892
3893 /// Apply italic to the selection
3894 bool wxRichTextCtrl::ApplyItalicToSelection()
3895 {
3896     wxRichTextAttr attr;
3897     attr.SetFlags(wxTEXT_ATTR_FONT_ITALIC);
3898     attr.SetFontStyle(IsSelectionItalics() ? wxFONTSTYLE_NORMAL : wxFONTSTYLE_ITALIC);
3899
3900     if (HasSelection())
3901         return SetStyleEx(GetSelectionRange(), attr, wxRICHTEXT_SETSTYLE_WITH_UNDO|wxRICHTEXT_SETSTYLE_OPTIMIZE|wxRICHTEXT_SETSTYLE_CHARACTERS_ONLY);
3902     else
3903     {
3904         wxRichTextAttr current = GetDefaultStyleEx();
3905         current.Apply(attr);
3906         SetAndShowDefaultStyle(current);
3907     }
3908     return true;
3909 }
3910
3911 /// Apply underline to the selection
3912 bool wxRichTextCtrl::ApplyUnderlineToSelection()
3913 {
3914     wxRichTextAttr attr;
3915     attr.SetFlags(wxTEXT_ATTR_FONT_UNDERLINE);
3916     attr.SetFontUnderlined(!IsSelectionUnderlined());
3917
3918     if (HasSelection())
3919         return SetStyleEx(GetSelectionRange(), attr, wxRICHTEXT_SETSTYLE_WITH_UNDO|wxRICHTEXT_SETSTYLE_OPTIMIZE|wxRICHTEXT_SETSTYLE_CHARACTERS_ONLY);
3920     else
3921     {
3922         wxRichTextAttr current = GetDefaultStyleEx();
3923         current.Apply(attr);
3924         SetAndShowDefaultStyle(current);
3925     }
3926     return true;
3927 }
3928
3929 /// Apply the wxTextAttrEffects flag(s) to the selection, or the current caret position if there's no selection
3930 bool wxRichTextCtrl::ApplyTextEffectToSelection(int flags)
3931 {
3932     wxRichTextAttr attr;
3933     attr.SetFlags(wxTEXT_ATTR_EFFECTS);
3934     attr.SetTextEffectFlags(flags);
3935     if (!DoesSelectionHaveTextEffectFlag(flags))
3936         attr.SetTextEffects(flags);
3937      else
3938         attr.SetTextEffects(attr.GetTextEffectFlags() & ~flags);
3939
3940     if (HasSelection())
3941         return SetStyleEx(GetSelectionRange(), attr, wxRICHTEXT_SETSTYLE_WITH_UNDO|wxRICHTEXT_SETSTYLE_OPTIMIZE|wxRICHTEXT_SETSTYLE_CHARACTERS_ONLY);
3942     else
3943     {
3944         wxRichTextAttr current = GetDefaultStyleEx();
3945         current.Apply(attr);
3946         SetAndShowDefaultStyle(current);
3947     }
3948     return true;
3949 }
3950
3951 /// Is all of the selection aligned according to the specified flag?
3952 bool wxRichTextCtrl::IsSelectionAligned(wxTextAttrAlignment alignment)
3953 {
3954     wxRichTextRange range;
3955     if (HasSelection())
3956         range = GetSelectionRange();
3957     else
3958         range = wxRichTextRange(GetCaretPosition()+1, GetCaretPosition()+2);
3959
3960     wxRichTextAttr attr;
3961     attr.SetAlignment(alignment);
3962
3963     return HasParagraphAttributes(range, attr);
3964 }
3965
3966 /// Apply alignment to the selection
3967 bool wxRichTextCtrl::ApplyAlignmentToSelection(wxTextAttrAlignment alignment)
3968 {
3969     wxRichTextAttr attr;
3970     attr.SetAlignment(alignment);
3971     if (HasSelection())
3972         return SetStyle(GetSelectionRange(), attr);
3973     else
3974     {
3975         wxRichTextParagraph* para = GetFocusObject()->GetParagraphAtPosition(GetCaretPosition()+1);
3976         if (para)
3977             return SetStyleEx(para->GetRange().FromInternal(), attr, wxRICHTEXT_SETSTYLE_WITH_UNDO|wxRICHTEXT_SETSTYLE_OPTIMIZE|wxRICHTEXT_SETSTYLE_PARAGRAPHS_ONLY);
3978     }
3979     return true;
3980 }
3981
3982 /// Apply a named style to the selection
3983 bool wxRichTextCtrl::ApplyStyle(wxRichTextStyleDefinition* def)
3984 {
3985     // Flags are defined within each definition, so only certain
3986     // attributes are applied.
3987     wxRichTextAttr attr(GetStyleSheet() ? def->GetStyleMergedWithBase(GetStyleSheet()) : def->GetStyle());
3988
3989     int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO|wxRICHTEXT_SETSTYLE_OPTIMIZE|wxRICHTEXT_SETSTYLE_RESET;
3990
3991     if (def->IsKindOf(CLASSINFO(wxRichTextListStyleDefinition)))
3992     {
3993         flags |= wxRICHTEXT_SETSTYLE_PARAGRAPHS_ONLY;
3994
3995         wxRichTextRange range;
3996
3997         if (HasSelection())
3998             range = GetSelectionRange();
3999         else
4000         {
4001             long pos = GetAdjustedCaretPosition(GetCaretPosition());
4002             range = wxRichTextRange(pos, pos+1);
4003         }
4004
4005         return SetListStyle(range, (wxRichTextListStyleDefinition*) def, flags);
4006     }
4007
4008     bool isPara = false;
4009
4010     // Make sure the attr has the style name
4011     if (def->IsKindOf(CLASSINFO(wxRichTextParagraphStyleDefinition)))
4012     {
4013         isPara = true;
4014         attr.SetParagraphStyleName(def->GetName());
4015
4016         // If applying a paragraph style, we only want the paragraph nodes to adopt these
4017         // attributes, and not the leaf nodes. This will allow the content (e.g. text)
4018         // to change its style independently.
4019         flags |= wxRICHTEXT_SETSTYLE_PARAGRAPHS_ONLY;
4020     }
4021     else if (def->IsKindOf(CLASSINFO(wxRichTextCharacterStyleDefinition)))
4022         attr.SetCharacterStyleName(def->GetName());
4023     else if (def->IsKindOf(CLASSINFO(wxRichTextBoxStyleDefinition)))
4024         attr.GetTextBoxAttr().SetBoxStyleName(def->GetName());
4025
4026     if (def->IsKindOf(CLASSINFO(wxRichTextBoxStyleDefinition)))
4027     {
4028         if (GetFocusObject() && (GetFocusObject() != & GetBuffer()))
4029         {
4030             SetStyle(GetFocusObject(), attr);
4031             return true;
4032         }
4033         else
4034             return false;
4035     }
4036     else if (HasSelection())
4037         return SetStyleEx(GetSelectionRange(), attr, flags);
4038     else
4039     {
4040         wxRichTextAttr current = GetDefaultStyleEx();
4041         wxRichTextAttr defaultStyle(attr);
4042         if (isPara)
4043         {
4044             // Don't apply extra character styles since they are already implied
4045             // in the paragraph style
4046             defaultStyle.SetFlags(defaultStyle.GetFlags() & ~wxTEXT_ATTR_CHARACTER);
4047         }
4048         current.Apply(defaultStyle);
4049         SetAndShowDefaultStyle(current);
4050
4051         // If it's a paragraph style, we want to apply the style to the
4052         // current paragraph even if we didn't select any text.
4053         if (isPara)
4054         {
4055             long pos = GetAdjustedCaretPosition(GetCaretPosition());
4056             wxRichTextParagraph* para = GetFocusObject()->GetParagraphAtPosition(pos);
4057             if (para)
4058             {
4059                 return SetStyleEx(para->GetRange().FromInternal(), attr, flags);
4060             }
4061         }
4062         return true;
4063     }
4064 }
4065
4066 /// Apply the style sheet to the buffer, for example if the styles have changed.
4067 bool wxRichTextCtrl::ApplyStyleSheet(wxRichTextStyleSheet* styleSheet)
4068 {
4069     if (!styleSheet)
4070         styleSheet = GetBuffer().GetStyleSheet();
4071     if (!styleSheet)
4072         return false;
4073
4074     if (GetBuffer().ApplyStyleSheet(styleSheet))
4075     {
4076         GetBuffer().Invalidate(wxRICHTEXT_ALL);
4077         Refresh(false);
4078         return true;
4079     }
4080     else
4081         return false;
4082 }
4083
4084 /// Sets the default style to the style under the cursor
4085 bool wxRichTextCtrl::SetDefaultStyleToCursorStyle()
4086 {
4087     wxRichTextAttr attr;
4088     attr.SetFlags(wxTEXT_ATTR_CHARACTER);
4089
4090     // If at the start of a paragraph, use the next position.
4091     long pos = GetAdjustedCaretPosition(GetCaretPosition());
4092
4093     wxRichTextObject* obj = GetFocusObject()->GetLeafObjectAtPosition(pos);
4094     if (obj && obj->IsTopLevel())
4095     {
4096         // Don't use the attributes of a top-level object, since they might apply
4097         // to content of the object, e.g. background colour.
4098         SetDefaultStyle(wxRichTextAttr());
4099         return true;
4100     }
4101     else if (GetUncombinedStyle(pos, attr))
4102     {
4103         SetDefaultStyle(attr);
4104         return true;
4105     }
4106
4107     return false;
4108 }
4109
4110 /// Returns the first visible position in the current view
4111 long wxRichTextCtrl::GetFirstVisiblePosition() const
4112 {
4113     wxRichTextLine* line = GetFocusObject()->GetLineAtYPosition(GetLogicalPoint(wxPoint(0, 0)).y);
4114     if (line)
4115         return line->GetAbsoluteRange().GetStart();
4116     else
4117         return 0;
4118 }
4119
4120 /// Get the first visible point in the window
4121 wxPoint wxRichTextCtrl::GetFirstVisiblePoint() const
4122 {
4123     int ppuX, ppuY;
4124     int startXUnits, startYUnits;
4125
4126     GetScrollPixelsPerUnit(& ppuX, & ppuY);
4127     GetViewStart(& startXUnits, & startYUnits);
4128
4129     return wxPoint(startXUnits * ppuX, startYUnits * ppuY);
4130 }
4131
4132 /// The adjusted caret position is the character position adjusted to take
4133 /// into account whether we're at the start of a paragraph, in which case
4134 /// style information should be taken from the next position, not current one.
4135 long wxRichTextCtrl::GetAdjustedCaretPosition(long caretPos) const
4136 {
4137     wxRichTextParagraph* para = GetFocusObject()->GetParagraphAtPosition(caretPos+1);
4138
4139     if (para && (caretPos+1 == para->GetRange().GetStart()))
4140         caretPos ++;
4141     return caretPos;
4142 }
4143
4144 /// Get/set the selection range in character positions. -1, -1 means no selection.
4145 /// The range is in API convention, i.e. a single character selection is denoted
4146 /// by (n, n+1)
4147 wxRichTextRange wxRichTextCtrl::GetSelectionRange() const
4148 {
4149     wxRichTextRange range = GetInternalSelectionRange();
4150     if (range != wxRichTextRange(-2,-2) && range != wxRichTextRange(-1,-1))
4151         range.SetEnd(range.GetEnd() + 1);
4152     return range;
4153 }
4154
4155 void wxRichTextCtrl::SetSelectionRange(const wxRichTextRange& range)
4156 {
4157     SetSelection(range.GetStart(), range.GetEnd());
4158 }
4159
4160 /// Set list style
4161 bool wxRichTextCtrl::SetListStyle(const wxRichTextRange& range, wxRichTextListStyleDefinition* def, int flags, int startFrom, int specifiedLevel)
4162 {
4163     return GetFocusObject()->SetListStyle(range.ToInternal(), def, flags, startFrom, specifiedLevel);
4164 }
4165
4166 bool wxRichTextCtrl::SetListStyle(const wxRichTextRange& range, const wxString& defName, int flags, int startFrom, int specifiedLevel)
4167 {
4168     return GetFocusObject()->SetListStyle(range.ToInternal(), defName, flags, startFrom, specifiedLevel);
4169 }
4170
4171 /// Clear list for given range
4172 bool wxRichTextCtrl::ClearListStyle(const wxRichTextRange& range, int flags)
4173 {
4174     return GetFocusObject()->ClearListStyle(range.ToInternal(), flags);
4175 }
4176
4177 /// Number/renumber any list elements in the given range
4178 bool wxRichTextCtrl::NumberList(const wxRichTextRange& range, wxRichTextListStyleDefinition* def, int flags, int startFrom, int specifiedLevel)
4179 {
4180     return GetFocusObject()->NumberList(range.ToInternal(), def, flags, startFrom, specifiedLevel);
4181 }
4182
4183 bool wxRichTextCtrl::NumberList(const wxRichTextRange& range, const wxString& defName, int flags, int startFrom, int specifiedLevel)
4184 {
4185     return GetFocusObject()->NumberList(range.ToInternal(), defName, flags, startFrom, specifiedLevel);
4186 }
4187
4188 /// Promote the list items within the given range. promoteBy can be a positive or negative number, e.g. 1 or -1
4189 bool wxRichTextCtrl::PromoteList(int promoteBy, const wxRichTextRange& range, wxRichTextListStyleDefinition* def, int flags, int specifiedLevel)
4190 {
4191     return GetFocusObject()->PromoteList(promoteBy, range.ToInternal(), def, flags, specifiedLevel);
4192 }
4193
4194 bool wxRichTextCtrl::PromoteList(int promoteBy, const wxRichTextRange& range, const wxString& defName, int flags, int specifiedLevel)
4195 {
4196     return GetFocusObject()->PromoteList(promoteBy, range.ToInternal(), defName, flags, specifiedLevel);
4197 }
4198
4199 /// Deletes the content in the given range
4200 bool wxRichTextCtrl::Delete(const wxRichTextRange& range)
4201 {
4202     return GetFocusObject()->DeleteRangeWithUndo(range.ToInternal(), this, & GetBuffer());
4203 }
4204
4205 const wxArrayString& wxRichTextCtrl::GetAvailableFontNames()
4206 {
4207     if (sm_availableFontNames.GetCount() == 0)
4208     {
4209         sm_availableFontNames = wxFontEnumerator::GetFacenames();
4210         sm_availableFontNames.Sort();
4211     }
4212     return sm_availableFontNames;
4213 }
4214
4215 void wxRichTextCtrl::ClearAvailableFontNames()
4216 {
4217     sm_availableFontNames.Clear();
4218 }
4219
4220 void wxRichTextCtrl::OnSysColourChanged(wxSysColourChangedEvent& WXUNUSED(event))
4221 {
4222     //wxLogDebug(wxT("wxRichTextCtrl::OnSysColourChanged"));
4223
4224     wxTextAttrEx basicStyle = GetBasicStyle();
4225     basicStyle.SetTextColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT));
4226     SetBasicStyle(basicStyle);
4227     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
4228
4229     Refresh();
4230 }
4231
4232 // Refresh the area affected by a selection change
4233 bool wxRichTextCtrl::RefreshForSelectionChange(const wxRichTextSelection& oldSelection, const wxRichTextSelection& newSelection)
4234 {
4235     // If the selection is not part of the focus object, or we have multiple ranges, then the chances are that
4236     // the selection contains whole containers rather than just text, so refresh everything
4237     // for now as it would be hard to compute the rectangle bounding all selections.
4238     // TODO: improve on this.
4239     if ((oldSelection.IsValid() && (oldSelection.GetContainer() != GetFocusObject() || oldSelection.GetCount() > 1)) ||
4240         (newSelection.IsValid() && (newSelection.GetContainer() != GetFocusObject() || newSelection.GetCount() > 1)))
4241     {
4242         Refresh(false);
4243         return true;
4244     }
4245
4246     wxRichTextRange oldRange, newRange;
4247     if (oldSelection.IsValid())
4248         oldRange = oldSelection.GetRange();
4249     else
4250         oldRange = wxRICHTEXT_NO_SELECTION;
4251     if (newSelection.IsValid())
4252         newRange = newSelection.GetRange();
4253     else
4254         newRange = wxRICHTEXT_NO_SELECTION;
4255
4256     // Calculate the refresh rectangle - just the affected lines
4257     long firstPos, lastPos;
4258     if (oldRange.GetStart() == -2 && newRange.GetStart() != -2)
4259     {
4260         firstPos = newRange.GetStart();
4261         lastPos = newRange.GetEnd();
4262     }
4263     else if (oldRange.GetStart() != -2 && newRange.GetStart() == -2)
4264     {
4265         firstPos = oldRange.GetStart();
4266         lastPos = oldRange.GetEnd();
4267     }
4268     else if (oldRange.GetStart() == -2 && newRange.GetStart() == -2)
4269     {
4270         return false;
4271     }
4272     else
4273     {
4274         firstPos = wxMin(oldRange.GetStart(), newRange.GetStart());
4275         lastPos = wxMax(oldRange.GetEnd(), newRange.GetEnd());
4276     }
4277
4278     wxRichTextLine* firstLine = GetFocusObject()->GetLineAtPosition(firstPos);
4279     wxRichTextLine* lastLine = GetFocusObject()->GetLineAtPosition(lastPos);
4280
4281     if (firstLine && lastLine)
4282     {
4283         wxSize clientSize = GetClientSize();
4284         wxPoint pt1 = GetPhysicalPoint(firstLine->GetAbsolutePosition());
4285         wxPoint pt2 = GetPhysicalPoint(lastLine->GetAbsolutePosition()) + wxPoint(0, lastLine->GetSize().y);
4286
4287         pt1.x = 0;
4288         pt1.y = wxMax(0, pt1.y);
4289         pt2.x = 0;
4290         pt2.y = wxMin(clientSize.y, pt2.y);
4291
4292         wxRect rect(pt1, wxSize(clientSize.x, pt2.y - pt1.y));
4293         RefreshRect(rect, false);
4294     }
4295     else
4296         Refresh(false);
4297
4298     return true;
4299 }
4300
4301 // margins functions
4302 bool wxRichTextCtrl::DoSetMargins(const wxPoint& pt)
4303 {
4304     GetBuffer().GetAttributes().GetTextBoxAttr().GetMargins().GetLeft().SetValue(pt.x, wxTEXT_ATTR_UNITS_PIXELS);
4305     GetBuffer().GetAttributes().GetTextBoxAttr().GetMargins().GetRight().SetValue(pt.x, wxTEXT_ATTR_UNITS_PIXELS);
4306     GetBuffer().GetAttributes().GetTextBoxAttr().GetMargins().GetTop().SetValue(pt.y, wxTEXT_ATTR_UNITS_PIXELS);
4307     GetBuffer().GetAttributes().GetTextBoxAttr().GetMargins().GetBottom().SetValue(pt.y, wxTEXT_ATTR_UNITS_PIXELS);
4308
4309     return true;
4310 }
4311
4312 wxPoint wxRichTextCtrl::DoGetMargins() const
4313 {
4314     return wxPoint(GetBuffer().GetAttributes().GetTextBoxAttr().GetMargins().GetLeft().GetValue(),
4315                    GetBuffer().GetAttributes().GetTextBoxAttr().GetMargins().GetTop().GetValue());
4316 }
4317
4318 bool wxRichTextCtrl::SetFocusObject(wxRichTextParagraphLayoutBox* obj, bool setCaretPosition)
4319 {
4320     if (obj && !obj->AcceptsFocus())
4321         return false;
4322
4323     wxRichTextParagraphLayoutBox* oldContainer = GetFocusObject();
4324     bool changingContainer = (m_focusObject != obj);
4325
4326     if (changingContainer && HasSelection())
4327         SelectNone();
4328
4329     m_focusObject = obj;
4330
4331     if (!obj)
4332         m_focusObject = & m_buffer;
4333
4334     if (setCaretPosition && changingContainer)
4335     {
4336         m_selection.Reset();
4337         m_selectionAnchor = -2;
4338         m_selectionAnchorObject = NULL;
4339         m_selectionState = wxRichTextCtrlSelectionState_Normal;
4340
4341         long pos = -1;
4342
4343         m_caretAtLineStart = false;
4344         MoveCaret(pos, m_caretAtLineStart);
4345         SetDefaultStyleToCursorStyle();
4346
4347         wxRichTextEvent cmdEvent(
4348             wxEVT_COMMAND_RICHTEXT_FOCUS_OBJECT_CHANGED,
4349             GetId());
4350         cmdEvent.SetEventObject(this);
4351         cmdEvent.SetPosition(m_caretPosition+1);
4352         cmdEvent.SetOldContainer(oldContainer);
4353         cmdEvent.SetContainer(m_focusObject);
4354
4355         GetEventHandler()->ProcessEvent(cmdEvent);
4356     }
4357     return true;
4358 }
4359
4360 #if wxUSE_DRAG_AND_DROP
4361 void wxRichTextCtrl::OnDrop(wxCoord WXUNUSED(x), wxCoord WXUNUSED(y), wxDragResult def, wxDataObject* DataObj)
4362 {
4363     m_preDrag = false;
4364
4365     if ((def != wxDragCopy) && (def != wxDragMove))
4366     {
4367         return;
4368     }
4369
4370     if (!GetSelection().IsValid())
4371     {
4372         return;
4373     }
4374
4375     wxRichTextParagraphLayoutBox* originContainer = GetSelection().GetContainer();
4376     wxRichTextParagraphLayoutBox* destContainer = GetFocusObject(); // This will be the drop container, not necessarily the same as the origin one
4377
4378     wxRichTextBuffer* richTextBuffer = ((wxRichTextBufferDataObject*)DataObj)->GetRichTextBuffer();
4379     if (richTextBuffer)
4380     {
4381         long position = GetCaretPosition();
4382         wxRichTextRange selectionrange = GetInternalSelectionRange();
4383         if (selectionrange.Contains(position) && (def == wxDragMove))
4384         {
4385             // It doesn't make sense to move onto itself
4386             return;
4387         }
4388
4389         // If we're moving, and the data is being moved forward, we need to drop first, then delete the selection
4390         // If moving backwards, we need to delete then drop. If we're copying (or doing nothing) we don't delete anyway
4391         bool DeleteAfter = (def == wxDragMove) && (position > selectionrange.GetEnd());
4392         if ((def == wxDragMove) && !DeleteAfter)
4393         {
4394             // We can't use e.g. DeleteSelectedContent() as it uses the focus container
4395             originContainer->DeleteRangeWithUndo(selectionrange, this, &GetBuffer());
4396         }
4397
4398         destContainer->InsertParagraphsWithUndo(&GetBuffer(), position+1, *richTextBuffer, this, 0);
4399         ShowPosition(position + richTextBuffer->GetOwnRange().GetEnd());
4400
4401         delete richTextBuffer;
4402
4403         if (DeleteAfter)
4404         {
4405             // We can't use e.g. DeleteSelectedContent() as it uses the focus container
4406             originContainer->DeleteRangeWithUndo(selectionrange, this, &GetBuffer());
4407         }
4408
4409         SelectNone();
4410         Refresh();
4411     }
4412 }
4413 #endif // wxUSE_DRAG_AND_DROP
4414
4415
4416 #if wxUSE_DRAG_AND_DROP
4417 bool wxRichTextDropSource::GiveFeedback(wxDragResult WXUNUSED(effect))
4418 {
4419     wxCHECK_MSG(m_rtc, false, wxT("NULL m_rtc"));
4420
4421     long position = 0;
4422     int hit = 0;
4423     wxRichTextObject* hitObj = NULL;
4424     wxRichTextParagraphLayoutBox* container = m_rtc->FindContainerAtPoint(m_rtc->ScreenToClient(wxGetMousePosition()), position, hit, hitObj);
4425
4426     if (!(hit & wxRICHTEXT_HITTEST_NONE) && container && container->AcceptsFocus())
4427     {
4428         m_rtc->StoreFocusObject(container);
4429         m_rtc->SetCaretPositionAfterClick(container, position, hit);
4430     }
4431
4432     return false;  // so that the base-class sets a cursor
4433 }
4434 #endif // wxUSE_DRAG_AND_DROP
4435
4436
4437 #if wxRICHTEXT_USE_OWN_CARET
4438
4439 // ----------------------------------------------------------------------------
4440 // initialization and destruction
4441 // ----------------------------------------------------------------------------
4442
4443 void wxRichTextCaret::Init()
4444 {
4445     m_hasFocus = true;
4446     m_refreshEnabled = true;
4447
4448     m_xOld =
4449     m_yOld = -1;
4450     m_richTextCtrl = NULL;
4451     m_needsUpdate = false;
4452     m_flashOn = true;
4453 }
4454
4455 wxRichTextCaret::~wxRichTextCaret()
4456 {
4457     if (m_timer.IsRunning())
4458         m_timer.Stop();
4459 }
4460
4461 // ----------------------------------------------------------------------------
4462 // showing/hiding/moving the caret (base class interface)
4463 // ----------------------------------------------------------------------------
4464
4465 void wxRichTextCaret::DoShow()
4466 {
4467     m_flashOn = true;
4468
4469     if (!m_timer.IsRunning())
4470         m_timer.Start(GetBlinkTime());
4471
4472     Refresh();
4473 }
4474
4475 void wxRichTextCaret::DoHide()
4476 {
4477     if (m_timer.IsRunning())
4478         m_timer.Stop();
4479
4480     Refresh();
4481 }
4482
4483 void wxRichTextCaret::DoMove()
4484 {
4485     if (IsVisible())
4486     {
4487         Refresh();
4488
4489         if (m_xOld != -1 && m_yOld != -1)
4490         {
4491             if (m_richTextCtrl && m_refreshEnabled)
4492             {
4493                 wxRect rect(GetPosition(), GetSize());
4494                 m_richTextCtrl->RefreshRect(rect, false);
4495             }
4496         }
4497     }
4498
4499     m_xOld = m_x;
4500     m_yOld = m_y;
4501 }
4502
4503 void wxRichTextCaret::DoSize()
4504 {
4505     int countVisible = m_countVisible;
4506     if (countVisible > 0)
4507     {
4508         m_countVisible = 0;
4509         DoHide();
4510     }
4511
4512     if (countVisible > 0)
4513     {
4514         m_countVisible = countVisible;
4515         DoShow();
4516     }
4517 }
4518
4519 // ----------------------------------------------------------------------------
4520 // handling the focus
4521 // ----------------------------------------------------------------------------
4522
4523 void wxRichTextCaret::OnSetFocus()
4524 {
4525     m_hasFocus = true;
4526
4527     if ( IsVisible() )
4528         Refresh();
4529 }
4530
4531 void wxRichTextCaret::OnKillFocus()
4532 {
4533     m_hasFocus = false;
4534 }
4535
4536 // ----------------------------------------------------------------------------
4537 // drawing the caret
4538 // ----------------------------------------------------------------------------
4539
4540 void wxRichTextCaret::Refresh()
4541 {
4542     if (m_richTextCtrl && m_refreshEnabled)
4543     {
4544         wxRect rect(GetPosition(), GetSize());
4545         m_richTextCtrl->RefreshRect(rect, false);
4546     }
4547 }
4548
4549 void wxRichTextCaret::DoDraw(wxDC *dc)
4550 {
4551     dc->SetPen( *wxBLACK_PEN );
4552
4553     dc->SetBrush(*(m_hasFocus ? wxBLACK_BRUSH : wxTRANSPARENT_BRUSH));
4554     dc->SetPen(*wxBLACK_PEN);
4555
4556     wxPoint pt(m_x, m_y);
4557
4558     if (m_richTextCtrl)
4559     {
4560         pt = m_richTextCtrl->GetLogicalPoint(pt);
4561     }
4562     if (IsVisible() && m_flashOn)
4563         dc->DrawRectangle(pt.x, pt.y, m_width, m_height);
4564 }
4565
4566 void wxRichTextCaret::Notify()
4567 {
4568     m_flashOn = !m_flashOn;
4569     Refresh();
4570 }
4571
4572 void wxRichTextCaretTimer::Notify()
4573 {
4574     m_caret->Notify();
4575 }
4576 #endif
4577     // wxRICHTEXT_USE_OWN_CARET
4578
4579 // Add an item
4580 bool wxRichTextContextMenuPropertiesInfo::AddItem(const wxString& label, wxRichTextObject* obj)
4581 {
4582     if (GetCount() < 3)
4583     {
4584         m_labels.Add(label);
4585         m_objects.Add(obj);
4586         return true;
4587     }
4588     else
4589         return false;
4590 }
4591
4592 // Returns number of menu items were added.
4593 int wxRichTextContextMenuPropertiesInfo::AddMenuItems(wxMenu* menu, int startCmd) const
4594 {
4595     wxMenuItem* item = menu->FindItem(startCmd);
4596     // If none of the standard properties identifiers are in the menu, add them if necessary.
4597     // If no items to add, just set the text to something generic
4598     if (GetCount() == 0)
4599     {
4600         if (item)
4601         {
4602             menu->SetLabel(startCmd, _("&Properties"));
4603
4604             // Delete the others if necessary
4605             int i;
4606             for (i = startCmd+1; i < startCmd+3; i++)
4607             {
4608                 if (menu->FindItem(i))
4609                 {
4610                     menu->Delete(i);
4611                 }
4612             }
4613         }
4614     }
4615     else
4616     {
4617         int i;
4618         int pos = -1;
4619         // Find the position of the first properties item
4620         for (i = 0; i < (int) menu->GetMenuItemCount(); i++)
4621         {
4622             wxMenuItem* item = menu->FindItemByPosition(i);
4623             if (item && item->GetId() == startCmd)
4624             {
4625                 pos = i;
4626                 break;
4627             }
4628         }
4629
4630         if (pos != -1)
4631         {
4632             int insertBefore = pos+1;
4633             for (i = startCmd; i < startCmd+GetCount(); i++)
4634             {
4635                 if (menu->FindItem(i))
4636                 {
4637                     menu->SetLabel(i, m_labels[i - startCmd]);
4638                 }
4639                 else
4640                 {
4641                     if (insertBefore >= (int) menu->GetMenuItemCount())
4642                         menu->Append(i, m_labels[i - startCmd]);
4643                     else
4644                         menu->Insert(insertBefore, i, m_labels[i - startCmd]);
4645                 }
4646                 insertBefore ++;
4647             }
4648
4649             // Delete any old items still left on the menu
4650             for (i = startCmd + GetCount(); i < startCmd+3; i++)
4651             {
4652                 if (menu->FindItem(i))
4653                 {
4654                     menu->Delete(i);
4655                 }
4656             }
4657         }
4658         else
4659         {
4660             // No existing property identifiers were found, so append to the end of the menu.
4661             menu->AppendSeparator();
4662             for (i = startCmd; i < startCmd+GetCount(); i++)
4663             {
4664                 menu->Append(i, m_labels[i - startCmd]);
4665             }
4666         }
4667     }
4668
4669     return GetCount();
4670 }
4671
4672 // Add appropriate menu items for the current container and clicked on object
4673 // (and container's parent, if appropriate).
4674 int wxRichTextContextMenuPropertiesInfo::AddItems(wxRichTextCtrl* ctrl, wxRichTextObject* container, wxRichTextObject* obj)
4675 {
4676     Clear();
4677     if (obj && ctrl->CanEditProperties(obj))
4678         AddItem(obj->GetPropertiesMenuLabel(), obj);
4679
4680     if (container && container != obj && ctrl->CanEditProperties(container) && m_labels.Index(container->GetPropertiesMenuLabel()) == wxNOT_FOUND)
4681         AddItem(container->GetPropertiesMenuLabel(), container);
4682
4683     if (container && container->GetParent() && ctrl->CanEditProperties(container->GetParent()) && m_labels.Index(container->GetParent()->GetPropertiesMenuLabel()) == wxNOT_FOUND)
4684         AddItem(container->GetParent()->GetPropertiesMenuLabel(), container->GetParent());
4685
4686     return GetCount();
4687 }
4688
4689 #endif
4690     // wxUSE_RICHTEXT