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