]> git.saurik.com Git - wxWidgets.git/blobdiff - src/richtext/richtextctrl.cpp
Add wxFontDialog ctor not taking wxFontData to wxOSX.
[wxWidgets.git] / src / richtext / richtextctrl.cpp
index 14266aa8c1a72e1bae62b86afd032040bd6ed87d..f5302ee6ca34e1110ae8874126d44063d910243d 100644 (file)
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        src/richtext/richeditctrl.cpp
+// Name:        src/richtext/richtextctrl.cpp
 // Purpose:     A rich edit control
 // Author:      Julian Smart
 // Modified by:
 #include "wx/fontenum.h"
 #include "wx/accel.h"
 
+#if defined (__WXGTK__) || defined(__WXX11__) || defined(__WXMOTIF__)
+#define wxHAVE_PRIMARY_SELECTION 1
+#else
+#define wxHAVE_PRIMARY_SELECTION 0
+#endif
+
+#if wxUSE_CLIPBOARD && wxHAVE_PRIMARY_SELECTION
+#include "wx/clipbrd.h"
+#endif
+
 // DLL options compatibility check:
 #include "wx/app.h"
 WX_CHECK_BUILD_OPTIONS("wxRichTextCtrl")
@@ -55,6 +65,7 @@ wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_STYLESHEET_CHANGED, wxRichTextEvent );
 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_CONTENT_INSERTED, wxRichTextEvent );
 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_CONTENT_DELETED, wxRichTextEvent );
 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_STYLE_CHANGED, wxRichTextEvent );
+wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_PROPERTIES_CHANGED, wxRichTextEvent );
 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_SELECTION_CHANGED, wxRichTextEvent );
 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_BUFFER_RESET, wxRichTextEvent );
 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_FOCUS_OBJECT_CHANGED, wxRichTextEvent );
@@ -115,6 +126,9 @@ public:
 
     void Notify();
 
+    bool GetRefreshEnabled() const { return m_refreshEnabled; }
+    void EnableRefresh(bool b) { m_refreshEnabled = b; }
+
 protected:
     virtual void DoShow();
     virtual void DoHide();
@@ -134,6 +148,7 @@ private:
     bool          m_flashOn;
     wxRichTextCaretTimer m_timer;
     wxRichTextCtrl* m_richTextCtrl;
+    bool          m_refreshEnabled;
 };
 #endif
 
@@ -230,7 +245,7 @@ bool wxRichTextCtrl::Create( wxWindow* parent, wxWindowID id, const wxString& va
                            validator, name))
         return false;
 
-    if (!GetFont().Ok())
+    if (!GetFont().IsOk())
     {
         SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
     }
@@ -293,12 +308,12 @@ bool wxRichTextCtrl::Create( wxWindow* parent, wxWindowID id, const wxString& va
     // Accelerators
     wxAcceleratorEntry entries[6];
 
-    entries[0].Set(wxACCEL_CMD,   (int) 'C',       wxID_COPY);
-    entries[1].Set(wxACCEL_CMD,   (int) 'X',       wxID_CUT);
-    entries[2].Set(wxACCEL_CMD,   (int) 'V',       wxID_PASTE);
-    entries[3].Set(wxACCEL_CMD,   (int) 'A',       wxID_SELECTALL);
-    entries[4].Set(wxACCEL_CMD,   (int) 'Z',       wxID_UNDO);
-    entries[5].Set(wxACCEL_CMD,   (int) 'Y',       wxID_REDO);
+    entries[0].Set(wxACCEL_CTRL,   (int) 'C',       wxID_COPY);
+    entries[1].Set(wxACCEL_CTRL,   (int) 'X',       wxID_CUT);
+    entries[2].Set(wxACCEL_CTRL,   (int) 'V',       wxID_PASTE);
+    entries[3].Set(wxACCEL_CTRL,   (int) 'A',       wxID_SELECTALL);
+    entries[4].Set(wxACCEL_CTRL,   (int) 'Z',       wxID_UNDO);
+    entries[5].Set(wxACCEL_CTRL,   (int) 'Y',       wxID_REDO);
 
     wxAcceleratorTable accel(6, entries);
     SetAcceleratorTable(accel);
@@ -316,6 +331,10 @@ bool wxRichTextCtrl::Create( wxWindow* parent, wxWindowID id, const wxString& va
     m_contextMenu->AppendSeparator();
     m_contextMenu->Append(wxID_RICHTEXT_PROPERTIES1, _("&Properties"));
 
+#if wxUSE_DRAG_AND_DROP
+    SetDropTarget(new wxRichTextDropTarget(this));
+#endif
+
     return true;
 }
 
@@ -339,6 +358,9 @@ void wxRichTextCtrl::Init()
     m_editable = true;
     m_caretAtLineStart = false;
     m_dragging = false;
+#if wxUSE_DRAG_AND_DROP
+    m_preDrag = false;
+#endif
     m_fullLayoutRequired = false;
     m_fullLayoutTime = 0;
     m_fullLayoutSavedPosition = 0;
@@ -393,6 +415,11 @@ void wxRichTextCtrl::OnPaint(wxPaintEvent& WXUNUSED(event))
 #if !wxRICHTEXT_USE_OWN_CARET
     if (GetCaret() && !IsFrozen())
         GetCaret()->Hide();
+#else
+    // Stop the caret refreshing the control from within the
+    // paint handler
+    if (GetCaret())
+        ((wxRichTextCaret*) GetCaret())->EnableRefresh(false);
 #endif
 
     {
@@ -418,9 +445,10 @@ void wxRichTextCtrl::OnPaint(wxPaintEvent& WXUNUSED(event))
         drawingArea.SetPosition(GetLogicalPoint(drawingArea.GetPosition()));
 
         wxRect availableSpace(GetClientSize());
+        wxRichTextDrawingContext context(& GetBuffer());
         if (GetBuffer().IsDirty())
         {
-            GetBuffer().Layout(dc, availableSpace, wxRICHTEXT_FIXED_WIDTH|wxRICHTEXT_VARIABLE_HEIGHT);
+            GetBuffer().Layout(dc, context, availableSpace, availableSpace, wxRICHTEXT_FIXED_WIDTH|wxRICHTEXT_VARIABLE_HEIGHT);
             GetBuffer().Invalidate(wxRICHTEXT_NONE);
             SetupScrollbars();
         }
@@ -437,7 +465,7 @@ void wxRichTextCtrl::OnPaint(wxPaintEvent& WXUNUSED(event))
         if ((GetExtraStyle() & wxRICHTEXT_EX_NO_GUIDELINES) == 0)
             flags |= wxRICHTEXT_DRAW_GUIDELINES;
 
-        GetBuffer().Draw(dc, GetBuffer().GetOwnRange(), GetSelection(), drawingArea, 0 /* descent */, flags);
+        GetBuffer().Draw(dc, context, GetBuffer().GetOwnRange(), GetSelection(), drawingArea, 0 /* descent */, flags);
 
         dc.DestroyClippingRegion();
 
@@ -447,6 +475,7 @@ void wxRichTextCtrl::OnPaint(wxPaintEvent& WXUNUSED(event))
 #if wxRICHTEXT_USE_OWN_CARET
         if (GetCaret()->IsVisible())
         {
+            PositionCaret();
             ((wxRichTextCaret*) GetCaret())->DoDraw(& dc);
         }
 #endif
@@ -456,6 +485,9 @@ void wxRichTextCtrl::OnPaint(wxPaintEvent& WXUNUSED(event))
     if (GetCaret())
         GetCaret()->Show();
     PositionCaret();
+#else
+    if (GetCaret())
+        ((wxRichTextCaret*) GetCaret())->EnableRefresh(true);
 #endif
 }
 
@@ -542,7 +574,28 @@ void wxRichTextCtrl::OnLeftClick(wxMouseEvent& event)
     long position = 0;
     wxRichTextObject* hitObj = NULL;
     wxRichTextObject* contextObj = NULL;
-    int hit = GetBuffer().HitTest(dc, event.GetLogicalPosition(dc), position, & hitObj, & contextObj);
+    wxRichTextDrawingContext context(& GetBuffer());
+    int hit = GetBuffer().HitTest(dc, context, event.GetLogicalPosition(dc), position, & hitObj, & contextObj);
+
+#if wxUSE_DRAG_AND_DROP
+    // If there's no selection, or we're not inside it, this isn't an attempt to initiate Drag'n'Drop
+    if (IsEditable() && HasSelection() && GetSelectionRange().ToInternal().Contains(position))
+    {
+        // This might be an attempt at initiating Drag'n'Drop. So set the time & flags
+        m_preDrag = true;
+        m_dragStartPoint = event.GetPosition();   // No need to worry about logical positions etc, we only care about the distance from the original pt
+
+#if wxUSE_DATETIME
+        m_dragStartTime = wxDateTime::UNow();
+#endif // wxUSE_DATETIME
+
+        // Preserve behaviour of clicking on an object within the selection
+        if (hit != wxRICHTEXT_HITTEST_NONE && hitObj)
+            m_dragging = true;
+
+        return; // Don't skip the event, else the selection will be lost
+    }
+#endif // wxUSE_DRAG_AND_DROP
 
     if (hit != wxRICHTEXT_HITTEST_NONE && hitObj)
     {
@@ -553,7 +606,6 @@ void wxRichTextCtrl::OnLeftClick(wxMouseEvent& event)
             SetFocusObject(container, false /* don't set caret position yet */);
         }
 
-        m_dragStart = event.GetLogicalPosition(dc);
         m_dragging = true;
         CaptureMouse();
 
@@ -563,12 +615,7 @@ void wxRichTextCtrl::OnLeftClick(wxMouseEvent& event)
 
         // For now, don't handle shift-click when we're selecting multiple objects.
         if (event.ShiftDown() && GetFocusObject() == oldFocusObject && m_selectionState == wxRichTextCtrlSelectionState_Normal)
-        {
-            if (!m_selection.IsValid())
-                ExtendSelection(oldCaretPos, m_caretPosition, wxRICHTEXT_SHIFT_DOWN);
-            else
-                ExtendSelection(m_caretPosition, m_caretPosition, wxRICHTEXT_SHIFT_DOWN);
-        }
+            ExtendSelection(oldCaretPos, m_caretPosition, wxRICHTEXT_SHIFT_DOWN);
         else
             SelectNone();
     }
@@ -594,8 +641,39 @@ void wxRichTextCtrl::OnLeftUp(wxMouseEvent& event)
         wxPoint logicalPt = event.GetLogicalPosition(dc);
         wxRichTextObject* hitObj = NULL;
         wxRichTextObject* contextObj = NULL;
+        wxRichTextDrawingContext context(& GetBuffer());
         // Only get objects at this level, not nested, because otherwise we couldn't swipe text at a single level.
-        int hit = GetFocusObject()->HitTest(dc, logicalPt, position, & hitObj, & contextObj, wxRICHTEXT_HITTEST_NO_NESTED_OBJECTS);
+        int hit = GetFocusObject()->HitTest(dc, context, logicalPt, position, & hitObj, & contextObj, wxRICHTEXT_HITTEST_NO_NESTED_OBJECTS);
+
+#if wxUSE_DRAG_AND_DROP
+        if (m_preDrag)
+        {
+            // Preserve the behaviour that would have happened without drag-and-drop detection, in OnLeftClick
+            m_preDrag = false; // Tell DnD not to happen now: we are processing Left Up ourselves.
+
+            // Do the actions that would have been done in OnLeftClick if we hadn't tried to drag
+            long position = 0;
+            wxRichTextObject* hitObj = NULL;
+            wxRichTextObject* contextObj = NULL;
+            int hit = GetBuffer().HitTest(dc, context, event.GetLogicalPosition(dc), position, & hitObj, & contextObj);
+            wxRichTextParagraphLayoutBox* oldFocusObject = GetFocusObject();
+            wxRichTextParagraphLayoutBox* container = wxDynamicCast(contextObj, wxRichTextParagraphLayoutBox);
+            if (container && container != GetFocusObject() && container->AcceptsFocus())
+            {
+                SetFocusObject(container, false /* don't set caret position yet */);
+            }
+
+            long oldCaretPos = m_caretPosition;
+
+            SetCaretPositionAfterClick(container, position, hit);
+
+            // For now, don't handle shift-click when we're selecting multiple objects.
+            if (event.ShiftDown() && GetFocusObject() == oldFocusObject && m_selectionState == wxRichTextCtrlSelectionState_Normal)
+                ExtendSelection(oldCaretPos, m_caretPosition, wxRICHTEXT_SHIFT_DOWN);
+            else
+                SelectNone();
+        }
+#endif
 
         if ((hit != wxRICHTEXT_HITTEST_NONE) && !(hit & wxRICHTEXT_HITTEST_OUTSIDE))
         {
@@ -639,11 +717,96 @@ void wxRichTextCtrl::OnLeftUp(wxMouseEvent& event)
             }
         }
     }
+
+#if wxUSE_DRAG_AND_DROP
+    m_preDrag = false;
+#endif // wxUSE_DRAG_AND_DROP
+
+#if wxUSE_CLIPBOARD && wxUSE_DATAOBJ && wxHAVE_PRIMARY_SELECTION
+    if (HasSelection() && GetFocusObject() && GetFocusObject()->GetBuffer())
+    {
+        // Put the selection in PRIMARY, if it exists
+        wxTheClipboard->UsePrimarySelection(true);
+
+        wxRichTextRange range = GetInternalSelectionRange();
+        GetFocusObject()->GetBuffer()->CopyToClipboard(range);
+
+        wxTheClipboard->UsePrimarySelection(false);
+    }
+#endif
 }
 
-/// Left-click
+/// Mouse-movements
 void wxRichTextCtrl::OnMoveMouse(wxMouseEvent& event)
 {
+#if wxUSE_DRAG_AND_DROP
+    // See if we're starting Drag'n'Drop
+    if (m_preDrag)
+    {
+        int x = m_dragStartPoint.x - event.GetPosition().x;
+        int y = m_dragStartPoint.y - event.GetPosition().y;
+        size_t distance = abs(x) + abs(y);
+#if wxUSE_DATETIME
+        wxTimeSpan diff = wxDateTime::UNow() - m_dragStartTime;
+#endif
+        if ((distance > 10)
+#if wxUSE_DATETIME
+             && (diff.GetMilliseconds() > 100)
+#endif
+           )
+        {
+            m_dragging = false;
+
+            // Start drag'n'drop
+            wxRichTextRange range = GetInternalSelectionRange();
+            if (range == wxRICHTEXT_NONE)
+            {
+              // Don't try to drag an empty range
+              m_preDrag = false;
+              return;
+            }
+
+            // Cache the current situation, to be restored if Drag'n'Drop is cancelled
+            long oldPos = GetCaretPosition();
+            wxRichTextParagraphLayoutBox* oldFocus = GetFocusObject();
+
+            wxDataObjectComposite* compositeObject = new wxDataObjectComposite();
+            wxString text = GetFocusObject()->GetTextForRange(range);
+#ifdef __WXMSW__
+            text = wxTextFile::Translate(text, wxTextFileType_Dos);
+#endif
+            compositeObject->Add(new wxTextDataObject(text), false /* not preferred */);
+
+            wxRichTextBuffer* richTextBuf = new wxRichTextBuffer;
+            GetFocusObject()->CopyFragment(range, *richTextBuf);
+            compositeObject->Add(new wxRichTextBufferDataObject(richTextBuf), true /* preferred */);
+
+            wxRichTextDropSource source(*compositeObject, this);
+            // Use wxDrag_DefaultMove, not because it's the likelier choice but because pressing Ctrl for Copy obeys the principle of least surprise
+            // The alternative, wxDrag_DefaultCopy, requires the user to know that Move needs the Shift key pressed
+            BeginBatchUndo(_("Drag"));
+            switch (source.DoDragDrop(wxDrag_AllowMove | wxDrag_DefaultMove))
+            {
+                case wxDragMove:
+                case wxDragCopy:  break;
+
+                case wxDragError:
+                    wxLogError(wxT("An error occurred during drag and drop operation"));
+                case wxDragNone:
+                case wxDragCancel:
+                    Refresh(); // This is needed in wxMSW, otherwise resetting the position doesn't 'take'
+                    SetCaretPosition(oldPos);
+                    SetFocusObject(oldFocus, false);
+                default: break;
+            }
+            EndBatchUndo();
+
+            m_preDrag = false;
+            return;
+        }
+    }
+#endif // wxUSE_DRAG_AND_DROP
+
     wxClientDC dc(this);
     PrepareDC(dc);
     dc.SetFont(GetFont());
@@ -663,7 +826,8 @@ void wxRichTextCtrl::OnMoveMouse(wxMouseEvent& event)
         flags = wxRICHTEXT_HITTEST_NO_NESTED_OBJECTS;
         container = GetFocusObject();
     }
-    int hit = container->HitTest(dc, logicalPt, position, & hitObj, & contextObj, flags);
+    wxRichTextDrawingContext context(& GetBuffer());
+    int hit = container->HitTest(dc, context, logicalPt, position, & hitObj, & contextObj, flags);
 
     // See if we need to change the cursor
 
@@ -671,18 +835,8 @@ void wxRichTextCtrl::OnMoveMouse(wxMouseEvent& event)
         if (hit != wxRICHTEXT_HITTEST_NONE && !(hit & wxRICHTEXT_HITTEST_OUTSIDE) && hitObj)
         {
             wxRichTextParagraphLayoutBox* actualContainer = wxDynamicCast(contextObj, wxRichTextParagraphLayoutBox);
-            wxRichTextAttr attr;
-            if (actualContainer && GetStyle(position, attr, actualContainer))
-            {
-                if (attr.HasFlag(wxTEXT_ATTR_URL))
-                {
-                    SetCursor(m_urlCursor);
-                }
-                else if (!attr.HasFlag(wxTEXT_ATTR_URL))
-                {
-                    SetCursor(m_textCursor);
-                }
-            }
+            if (actualContainer)
+                ProcessMouseMovement(actualContainer, hitObj, position, logicalPt);
         }
         else
             SetCursor(m_textCursor);
@@ -694,7 +848,11 @@ void wxRichTextCtrl::OnMoveMouse(wxMouseEvent& event)
         return;
     }
 
-    if (m_dragging)
+    if (m_dragging
+#if wxUSE_DRAG_AND_DROP
+        && !m_preDrag
+#endif
+        )
     {
         wxRichTextParagraphLayoutBox* commonAncestor = NULL;
         wxRichTextParagraphLayoutBox* otherContainer = NULL;
@@ -703,7 +861,8 @@ void wxRichTextCtrl::OnMoveMouse(wxMouseEvent& event)
         // Check for dragging across multiple containers
         long position2 = 0;
         wxRichTextObject* hitObj2 = NULL, *contextObj2 = NULL;
-        int hit2 = GetBuffer().HitTest(dc, logicalPt, position2, & hitObj2, & contextObj2, 0);
+        wxRichTextDrawingContext context(& GetBuffer());
+        int hit2 = GetBuffer().HitTest(dc, context, logicalPt, position2, & hitObj2, & contextObj2, 0);
         if (hit2 != wxRICHTEXT_HITTEST_NONE && !(hit2 & wxRICHTEXT_HITTEST_OUTSIDE) && hitObj2 && hitObj != hitObj2)
         {
             // See if we can find a common ancestor
@@ -767,7 +926,11 @@ void wxRichTextCtrl::OnMoveMouse(wxMouseEvent& event)
         }
     }
 
-    if (hitObj && m_dragging && hit != wxRICHTEXT_HITTEST_NONE && m_selectionState == wxRichTextCtrlSelectionState_Normal)
+    if (hitObj && m_dragging && hit != wxRICHTEXT_HITTEST_NONE && m_selectionState == wxRichTextCtrlSelectionState_Normal
+#if wxUSE_DRAG_AND_DROP
+        && !m_preDrag
+#endif
+        )
     {
         // TODO: test closeness
         SetCaretPositionAfterClick(container, position, hit, true /* extend selection */);
@@ -787,7 +950,8 @@ void wxRichTextCtrl::OnRightClick(wxMouseEvent& event)
     wxPoint logicalPt = event.GetLogicalPosition(dc);
     wxRichTextObject* hitObj = NULL;
     wxRichTextObject* contextObj = NULL;
-    int hit = GetFocusObject()->HitTest(dc, logicalPt, position, & hitObj, & contextObj);
+    wxRichTextDrawingContext context(& GetBuffer());
+    int hit = GetFocusObject()->HitTest(dc, context, logicalPt, position, & hitObj, & contextObj);
 
     if (hitObj && hitObj->GetContainer() != GetFocusObject())
     {
@@ -839,6 +1003,13 @@ void wxRichTextCtrl::OnMiddleClick(wxMouseEvent& event)
 
     if (!GetEventHandler()->ProcessEvent(cmdEvent))
         event.Skip();
+
+#if wxUSE_CLIPBOARD && wxUSE_DATAOBJ && wxHAVE_PRIMARY_SELECTION
+    // Paste any PRIMARY selection, if it exists
+    wxTheClipboard->UsePrimarySelection(true);
+    Paste();
+    wxTheClipboard->UsePrimarySelection(false);
+#endif
 }
 
 /// Key press
@@ -942,12 +1113,26 @@ void wxRichTextCtrl::OnChar(wxKeyEvent& event)
         // Must process this before translation, otherwise it's translated into a WXK_DELETE event.
         if (event.CmdDown() && event.GetKeyCode() == WXK_BACK)
         {
+            if (!IsEditable())
+            {
+                return;
+            }
+
+            if (HasSelection() && !CanDeleteRange(* GetFocusObject(), GetSelectionRange()))
+            {
+                return;
+            }
+
             BeginBatchUndo(_("Delete Text"));
 
             long newPos = m_caretPosition;
 
             bool processed = DeleteSelectedContent(& newPos);
 
+            int deletions = 0;
+            if (processed)
+                deletions ++;
+
             // Submit range in character positions, which are greater than caret positions,
             // so subtract 1 for deleted character and add 1 for conversion to character position.
             if (newPos > -1)
@@ -957,13 +1142,25 @@ void wxRichTextCtrl::OnChar(wxKeyEvent& event)
                     long pos = wxRichTextCtrl::FindNextWordPosition(-1);
                     if (pos < newPos)
                     {
-                        GetFocusObject()->DeleteRangeWithUndo(wxRichTextRange(pos+1, newPos), this, & GetBuffer());
+                        wxRichTextRange range(pos+1, newPos);
+                        if (CanDeleteRange(* GetFocusObject(), range.FromInternal()))
+                        {
+                            GetFocusObject()->DeleteRangeWithUndo(range, this, & GetBuffer());
+                            deletions ++;
+                        }
                         processed = true;
                     }
                 }
 
                 if (!processed)
-                    GetFocusObject()->DeleteRangeWithUndo(wxRichTextRange(newPos, newPos), this, & GetBuffer());
+                {
+                    wxRichTextRange range(newPos, newPos);
+                    if (CanDeleteRange(* GetFocusObject(), range.FromInternal()))
+                    {
+                        GetFocusObject()->DeleteRangeWithUndo(range, this, & GetBuffer());
+                        deletions ++;
+                    }
+                }
             }
 
             EndBatchUndo();
@@ -979,14 +1176,17 @@ void wxRichTextCtrl::OnChar(wxKeyEvent& event)
 
             ScrollIntoView(m_caretPosition, WXK_LEFT);
 
-            wxRichTextEvent cmdEvent(
-                wxEVT_COMMAND_RICHTEXT_DELETE,
-                GetId());
-            cmdEvent.SetEventObject(this);
-            cmdEvent.SetFlags(flags);
-            cmdEvent.SetPosition(m_caretPosition+1);
-            cmdEvent.SetContainer(GetFocusObject());
-            GetEventHandler()->ProcessEvent(cmdEvent);
+            if (deletions > 0)
+            {
+                wxRichTextEvent cmdEvent(
+                    wxEVT_COMMAND_RICHTEXT_DELETE,
+                    GetId());
+                cmdEvent.SetEventObject(this);
+                cmdEvent.SetFlags(flags);
+                cmdEvent.SetPosition(m_caretPosition+1);
+                cmdEvent.SetContainer(GetFocusObject());
+                GetEventHandler()->ProcessEvent(cmdEvent);
+            }
 
             Update();
         }
@@ -1006,22 +1206,30 @@ void wxRichTextCtrl::OnChar(wxKeyEvent& event)
 
     if (event.GetKeyCode() == WXK_RETURN)
     {
-        BeginBatchUndo(_("Insert Text"));
+        if (!CanInsertContent(* GetFocusObject(), m_caretPosition+1))
+            return;
 
         long newPos = m_caretPosition;
 
+        if (HasSelection() && !CanDeleteRange(* GetFocusObject(), GetSelectionRange()))
+        {
+            return;
+        }
+
+        BeginBatchUndo(_("Insert Text"));
+
         DeleteSelectedContent(& newPos);
 
         if (event.ShiftDown())
         {
             wxString text;
             text = wxRichTextLineBreakChar;
-            GetFocusObject()->InsertTextWithUndo(newPos+1, text, this, & GetBuffer());
+            GetFocusObject()->InsertTextWithUndo(& GetBuffer(), newPos+1, text, this);
             m_caretAtLineStart = true;
             PositionCaret();
         }
         else
-            GetFocusObject()->InsertNewlineWithUndo(newPos+1, this, & GetBuffer(), wxRICHTEXT_INSERT_WITH_PREVIOUS_PARAGRAPH_STYLE|wxRICHTEXT_INSERT_INTERACTIVE);
+            GetFocusObject()->InsertNewlineWithUndo(& GetBuffer(), newPos+1, this, wxRICHTEXT_INSERT_WITH_PREVIOUS_PARAGRAPH_STYLE|wxRICHTEXT_INSERT_INTERACTIVE);
 
         EndBatchUndo();
         SetDefaultStyleToCursorStyle();
@@ -1048,12 +1256,21 @@ void wxRichTextCtrl::OnChar(wxKeyEvent& event)
     }
     else if (event.GetKeyCode() == WXK_BACK)
     {
-        BeginBatchUndo(_("Delete Text"));
-
         long newPos = m_caretPosition;
 
+        if (HasSelection() && !CanDeleteRange(* GetFocusObject(), GetSelectionRange()))
+        {
+            return;
+        }
+
+        BeginBatchUndo(_("Delete Text"));
+
         bool processed = DeleteSelectedContent(& newPos);
 
+        int deletions = 0;
+        if (processed)
+            deletions ++;
+
         // Submit range in character positions, which are greater than caret positions,
         // so subtract 1 for deleted character and add 1 for conversion to character position.
         if (newPos > -1)
@@ -1063,13 +1280,25 @@ void wxRichTextCtrl::OnChar(wxKeyEvent& event)
                 long pos = wxRichTextCtrl::FindNextWordPosition(-1);
                 if (pos < newPos)
                 {
-                    GetFocusObject()->DeleteRangeWithUndo(wxRichTextRange(pos+1, newPos), this, & GetBuffer());
+                    wxRichTextRange range(pos+1, newPos);
+                    if (CanDeleteRange(* GetFocusObject(), range.FromInternal()))
+                    {
+                        GetFocusObject()->DeleteRangeWithUndo(range, this, & GetBuffer());
+                        deletions ++;
+                    }
                     processed = true;
                 }
             }
 
             if (!processed)
-                GetFocusObject()->DeleteRangeWithUndo(wxRichTextRange(newPos, newPos), this, & GetBuffer());
+            {
+                wxRichTextRange range(newPos, newPos);
+                if (CanDeleteRange(* GetFocusObject(), range.FromInternal()))
+                {
+                    GetFocusObject()->DeleteRangeWithUndo(range, this, & GetBuffer());
+                    deletions ++;
+                }
+            }
         }
 
         EndBatchUndo();
@@ -1085,25 +1314,37 @@ void wxRichTextCtrl::OnChar(wxKeyEvent& event)
 
         ScrollIntoView(m_caretPosition, WXK_LEFT);
 
-        wxRichTextEvent cmdEvent(
-            wxEVT_COMMAND_RICHTEXT_DELETE,
-            GetId());
-        cmdEvent.SetEventObject(this);
-        cmdEvent.SetFlags(flags);
-        cmdEvent.SetPosition(m_caretPosition+1);
-        cmdEvent.SetContainer(GetFocusObject());
-        GetEventHandler()->ProcessEvent(cmdEvent);
+        if (deletions > 0)
+        {
+            wxRichTextEvent cmdEvent(
+                wxEVT_COMMAND_RICHTEXT_DELETE,
+                GetId());
+            cmdEvent.SetEventObject(this);
+            cmdEvent.SetFlags(flags);
+            cmdEvent.SetPosition(m_caretPosition+1);
+            cmdEvent.SetContainer(GetFocusObject());
+            GetEventHandler()->ProcessEvent(cmdEvent);
+        }
 
         Update();
     }
     else if (event.GetKeyCode() == WXK_DELETE)
     {
-        BeginBatchUndo(_("Delete Text"));
-
         long newPos = m_caretPosition;
 
+        if (HasSelection() && !CanDeleteRange(* GetFocusObject(), GetSelectionRange()))
+        {
+            return;
+        }
+
+        BeginBatchUndo(_("Delete Text"));
+
         bool processed = DeleteSelectedContent(& newPos);
 
+        int deletions = 0;
+        if (processed)
+            deletions ++;
+
         // Submit range in character positions, which are greater than caret positions,
         if (newPos < GetFocusObject()->GetOwnRange().GetEnd()+1)
         {
@@ -1112,13 +1353,25 @@ void wxRichTextCtrl::OnChar(wxKeyEvent& event)
                 long pos = wxRichTextCtrl::FindNextWordPosition(1);
                 if (pos != -1 && (pos > newPos))
                 {
-                    GetFocusObject()->DeleteRangeWithUndo(wxRichTextRange(newPos+1, pos), this, & GetBuffer());
+                    wxRichTextRange range(newPos+1, pos);
+                    if (CanDeleteRange(* GetFocusObject(), range.FromInternal()))
+                    {
+                        GetFocusObject()->DeleteRangeWithUndo(range, this, & GetBuffer());
+                        deletions ++;
+                    }
                     processed = true;
                 }
             }
 
             if (!processed && newPos < (GetLastPosition()-1))
-                GetFocusObject()->DeleteRangeWithUndo(wxRichTextRange(newPos+1, newPos+1), this, & GetBuffer());
+            {
+                wxRichTextRange range(newPos+1, newPos+1);
+                if (CanDeleteRange(* GetFocusObject(), range.FromInternal()))
+                {
+                    GetFocusObject()->DeleteRangeWithUndo(range, this, & GetBuffer());
+                    deletions ++;
+                }
+            }
         }
 
         EndBatchUndo();
@@ -1132,14 +1385,19 @@ void wxRichTextCtrl::OnChar(wxKeyEvent& event)
             SetDefaultStyleToCursorStyle();
         }
 
-        wxRichTextEvent cmdEvent(
-            wxEVT_COMMAND_RICHTEXT_DELETE,
-            GetId());
-        cmdEvent.SetEventObject(this);
-        cmdEvent.SetFlags(flags);
-        cmdEvent.SetPosition(m_caretPosition+1);
-        cmdEvent.SetContainer(GetFocusObject());
-        GetEventHandler()->ProcessEvent(cmdEvent);
+        ScrollIntoView(m_caretPosition, WXK_LEFT);
+
+        if (deletions > 0)
+        {
+            wxRichTextEvent cmdEvent(
+                wxEVT_COMMAND_RICHTEXT_DELETE,
+                GetId());
+            cmdEvent.SetEventObject(this);
+            cmdEvent.SetFlags(flags);
+            cmdEvent.SetPosition(m_caretPosition+1);
+            cmdEvent.SetContainer(GetFocusObject());
+            GetEventHandler()->ProcessEvent(cmdEvent);
+        }
 
         Update();
     }
@@ -1204,6 +1462,12 @@ void wxRichTextCtrl::OnChar(wxKeyEvent& event)
                     }
                 }
 
+                if (!CanInsertContent(* GetFocusObject(), m_caretPosition+1))
+                    return;
+
+                if (HasSelection() && !CanDeleteRange(* GetFocusObject(), GetSelectionRange()))
+                    return;
+
                 BeginBatchUndo(_("Insert Text"));
 
                 long newPos = m_caretPosition;
@@ -1214,13 +1478,14 @@ void wxRichTextCtrl::OnChar(wxKeyEvent& event)
 #else
                 wxString str = (wxChar) event.GetKeyCode();
 #endif
-                GetFocusObject()->InsertTextWithUndo(newPos+1, str, this, & GetBuffer(), 0);
+                GetFocusObject()->InsertTextWithUndo(& GetBuffer(), newPos+1, str, this, 0);
 
                 EndBatchUndo();
 
                 SetDefaultStyleToCursorStyle();
                 ScrollIntoView(m_caretPosition, WXK_RIGHT);
 
+                cmdEvent.SetPosition(m_caretPosition);
                 GetEventHandler()->ProcessEvent(cmdEvent);
 
                 Update();
@@ -1229,6 +1494,25 @@ void wxRichTextCtrl::OnChar(wxKeyEvent& event)
     }
 }
 
+bool wxRichTextCtrl::ProcessMouseMovement(wxRichTextParagraphLayoutBox* container, wxRichTextObject* WXUNUSED(obj), long position, const wxPoint& WXUNUSED(pos))
+{
+    wxRichTextAttr attr;
+    if (container && GetStyle(position, attr, container))
+    {
+        if (attr.HasFlag(wxTEXT_ATTR_URL))
+        {
+            SetCursor(m_urlCursor);
+        }
+        else if (!attr.HasFlag(wxTEXT_ATTR_URL))
+        {
+            SetCursor(m_textCursor);
+        }
+        return true;
+    }
+    else
+        return false;
+}
+
 /// Delete content if there is a selection, e.g. when pressing a key.
 bool wxRichTextCtrl::DeleteSelectedContent(long* newPos)
 {
@@ -1833,7 +2117,8 @@ bool wxRichTextCtrl::MoveDown(int noLines, int flags)
 
     wxRichTextObject* hitObj = NULL;
     wxRichTextObject* contextObj = NULL;
-    int hitTest = container->HitTest(dc, pt, newPos, & hitObj, & contextObj, hitTestFlags);
+    wxRichTextDrawingContext context(& GetBuffer());
+    int hitTest = container->HitTest(dc, context, pt, newPos, & hitObj, & contextObj, hitTestFlags);
 
     if (hitObj &&
         ((hitTest & wxRICHTEXT_HITTEST_NONE) == 0) &&
@@ -2203,6 +2488,19 @@ void wxRichTextCtrl::OnSize(wxSizeEvent& event)
     event.Skip();
 }
 
+// Force any pending layout due to large buffer
+void wxRichTextCtrl::ForceDelayedLayout()
+{
+    if (m_fullLayoutRequired)
+    {
+        m_fullLayoutRequired = false;
+        m_fullLayoutTime = 0;
+        GetBuffer().Invalidate(wxRICHTEXT_ALL);
+        ShowPosition(m_fullLayoutSavedPosition);
+        Refresh(false);
+        Update();
+    }
+}
 
 /// Idle-time processing
 void wxRichTextCtrl::OnIdle(wxIdleEvent& event)
@@ -2309,7 +2607,7 @@ void wxRichTextCtrl::SetupScrollbars(bool atTop)
 void wxRichTextCtrl::PaintBackground(wxDC& dc)
 {
     wxColour backgroundColour = GetBackgroundColour();
-    if (!backgroundColour.Ok())
+    if (!backgroundColour.IsOk())
         backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
 
     // Clear the background
@@ -2336,9 +2634,9 @@ bool wxRichTextCtrl::RecreateBuffer(const wxSize& size)
     if (sz.x < 1 || sz.y < 1)
         return false;
 
-    if (!m_bufferBitmap.Ok() || m_bufferBitmap.GetWidth() < sz.x || m_bufferBitmap.GetHeight() < sz.y)
+    if (!m_bufferBitmap.IsOk() || m_bufferBitmap.GetWidth() < sz.x || m_bufferBitmap.GetHeight() < sz.y)
         m_bufferBitmap = wxBitmap(sz.x, sz.y);
-    return m_bufferBitmap.Ok();
+    return m_bufferBitmap.IsOk();
 }
 #endif
 
@@ -2534,7 +2832,8 @@ wxRichTextCtrl::HitTest(const wxPoint& pt,
 
     wxRichTextObject* hitObj = NULL;
     wxRichTextObject* contextObj = NULL;
-    int hit = ((wxRichTextCtrl*)this)->GetFocusObject()->HitTest(dc, pt2, *pos, & hitObj, & contextObj, wxRICHTEXT_HITTEST_NO_NESTED_OBJECTS);
+    wxRichTextDrawingContext context((wxRichTextBuffer*) & GetBuffer());
+    int hit = ((wxRichTextCtrl*)this)->GetFocusObject()->HitTest(dc, context, pt2, *pos, & hitObj, & contextObj, wxRICHTEXT_HITTEST_NO_NESTED_OBJECTS);
 
     if ((hit & wxRICHTEXT_HITTEST_BEFORE) && (hit & wxRICHTEXT_HITTEST_OUTSIDE))
         return wxTE_HT_BEFORE;
@@ -2546,6 +2845,24 @@ wxRichTextCtrl::HitTest(const wxPoint& pt,
     return wxTE_HT_UNKNOWN;
 }
 
+wxRichTextParagraphLayoutBox*
+wxRichTextCtrl::FindContainerAtPoint(const wxPoint pt, long& position, int& hit, wxRichTextObject* hitObj, int flags/* = 0*/)
+{
+    wxClientDC dc(this);
+    PrepareDC(dc);
+    dc.SetFont(GetFont());
+
+    wxPoint logicalPt = GetLogicalPoint(pt);
+
+    wxRichTextObject* contextObj = NULL;
+    wxRichTextDrawingContext context(& GetBuffer());
+    hit = GetBuffer().HitTest(dc, context, logicalPt, position, &hitObj, &contextObj, flags);
+    wxRichTextParagraphLayoutBox* container = wxDynamicCast(contextObj, wxRichTextParagraphLayoutBox);
+
+    return container;
+}
+
+
 // ----------------------------------------------------------------------------
 // set/get the controls text
 // ----------------------------------------------------------------------------
@@ -2607,7 +2924,7 @@ void wxRichTextCtrl::DoWriteText(const wxString& value, int flags)
 {
     wxString valueUnix = wxTextFile::Translate(value, wxTextFileType_Unix);
 
-    GetFocusObject()->InsertTextWithUndo(m_caretPosition+1, valueUnix, this, & GetBuffer(), wxRICHTEXT_INSERT_WITH_PREVIOUS_PARAGRAPH_STYLE);
+    GetFocusObject()->InsertTextWithUndo(& GetBuffer(), m_caretPosition+1, valueUnix, this, wxRICHTEXT_INSERT_WITH_PREVIOUS_PARAGRAPH_STYLE);
 
     if ( flags & SetValue_SendEvent )
         wxTextCtrl::SendTextUpdatedEvent(this);
@@ -2645,17 +2962,17 @@ bool wxRichTextCtrl::WriteImage(const wxString& filename, wxBitmapType bitmapTyp
 
 bool wxRichTextCtrl::WriteImage(const wxRichTextImageBlock& imageBlock, const wxRichTextAttr& textAttr)
 {
-    return GetFocusObject()->InsertImageWithUndo(m_caretPosition+1, imageBlock, this, & GetBuffer(), 0, textAttr);
+    return GetFocusObject()->InsertImageWithUndo(& GetBuffer(), m_caretPosition+1, imageBlock, this, 0, textAttr);
 }
 
 bool wxRichTextCtrl::WriteImage(const wxBitmap& bitmap, wxBitmapType bitmapType, const wxRichTextAttr& textAttr)
 {
-    if (bitmap.Ok())
+    if (bitmap.IsOk())
     {
         wxRichTextImageBlock imageBlock;
 
         wxImage image = bitmap.ConvertToImage();
-        if (image.Ok() && imageBlock.MakeImageBlock(image, bitmapType))
+        if (image.IsOk() && imageBlock.MakeImageBlock(image, bitmapType))
             return WriteImage(imageBlock, textAttr);
     }
 
@@ -2673,7 +2990,7 @@ wxRichTextBox* wxRichTextCtrl::WriteTextBox(const wxRichTextAttr& textAttr)
 
     // The object returned is the one actually inserted into the buffer,
     // while the original one is deleted.
-    wxRichTextObject* obj = GetFocusObject()->InsertObjectWithUndo(m_caretPosition+1, textBox, this, & GetBuffer(), wxRICHTEXT_INSERT_WITH_PREVIOUS_PARAGRAPH_STYLE);
+    wxRichTextObject* obj = GetFocusObject()->InsertObjectWithUndo(& GetBuffer(), m_caretPosition+1, textBox, this, wxRICHTEXT_INSERT_WITH_PREVIOUS_PARAGRAPH_STYLE);
     wxRichTextBox* box = wxDynamicCast(obj, wxRichTextBox);
     return box;
 }
@@ -2705,7 +3022,7 @@ wxRichTextTable* wxRichTextCtrl::WriteTable(int rows, int cols, const wxRichText
 
     // The object returned is the one actually inserted into the buffer,
     // while the original one is deleted.
-    wxRichTextObject* obj = GetFocusObject()->InsertObjectWithUndo(m_caretPosition+1, table, this, & GetBuffer(), wxRICHTEXT_INSERT_WITH_PREVIOUS_PARAGRAPH_STYLE);
+    wxRichTextObject* obj = GetFocusObject()->InsertObjectWithUndo(& GetBuffer(), m_caretPosition+1, table, this, wxRICHTEXT_INSERT_WITH_PREVIOUS_PARAGRAPH_STYLE);
     wxRichTextTable* tableResult = wxDynamicCast(obj, wxRichTextTable);
     return tableResult;
 }
@@ -2714,7 +3031,7 @@ wxRichTextTable* wxRichTextCtrl::WriteTable(int rows, int cols, const wxRichText
 /// Insert a newline (actually paragraph) at the current insertion point.
 bool wxRichTextCtrl::Newline()
 {
-    return GetFocusObject()->InsertNewlineWithUndo(m_caretPosition+1, this, & GetBuffer(), wxRICHTEXT_INSERT_WITH_PREVIOUS_PARAGRAPH_STYLE);
+    return GetFocusObject()->InsertNewlineWithUndo(& GetBuffer(), m_caretPosition+1, this, wxRICHTEXT_INSERT_WITH_PREVIOUS_PARAGRAPH_STYLE);
 }
 
 /// Insert a line break at the current insertion point.
@@ -2722,7 +3039,7 @@ bool wxRichTextCtrl::LineBreak()
 {
     wxString text;
     text = wxRichTextLineBreakChar;
-    return GetFocusObject()->InsertTextWithUndo(m_caretPosition+1, text, this, & GetBuffer());
+    return GetFocusObject()->InsertTextWithUndo(& GetBuffer(), m_caretPosition+1, text, this);
 }
 
 // ----------------------------------------------------------------------------
@@ -2792,12 +3109,12 @@ bool wxRichTextCtrl::CanCopy() const
 
 bool wxRichTextCtrl::CanCut() const
 {
-    return HasSelection() && IsEditable();
+    return CanDeleteSelection();
 }
 
 bool wxRichTextCtrl::CanPaste() const
 {
-    if ( !IsEditable() )
+    if ( !IsEditable() || !GetFocusObject() || !CanInsertContent(* GetFocusObject(), m_caretPosition+1))
         return false;
 
     return GetBuffer().CanPasteFromClipboard();
@@ -2805,7 +3122,7 @@ bool wxRichTextCtrl::CanPaste() const
 
 bool wxRichTextCtrl::CanDeleteSelection() const
 {
-    return HasSelection() && IsEditable();
+    return HasSelection() && IsEditable() && CanDeleteRange(* GetFocusObject(), GetSelectionRange());
 }
 
 
@@ -2911,13 +3228,19 @@ void wxRichTextCtrl::SetSelection(long from, long to)
 // Editing
 // ----------------------------------------------------------------------------
 
-void wxRichTextCtrl::Replace(long WXUNUSED(from), long WXUNUSED(to),
+void wxRichTextCtrl::Replace(long from, long to,
                              const wxString& value)
 {
     BeginBatchUndo(_("Replace"));
 
+    SetSelection(from, to);
+
+    wxRichTextAttr attr = GetDefaultStyle();
+
     DeleteSelectedContent();
 
+    SetDefaultStyle(attr);
+
     DoWriteText(value, SetValue_SelectionOnly);
 
     EndBatchUndo();
@@ -3127,8 +3450,8 @@ void wxRichTextCtrl::OnProperties(wxCommandEvent& event)
     if (idx >= 0 && idx < m_contextMenuPropertiesInfo.GetCount())
     {
         wxRichTextObject* obj = m_contextMenuPropertiesInfo.GetObject(idx);
-        if (obj && obj->CanEditProperties())
-            obj->EditProperties(this, & GetBuffer());
+        if (obj && CanEditProperties(obj))
+            EditProperties(obj, this);
 
         m_contextMenuPropertiesInfo.Clear();
     }
@@ -3148,45 +3471,98 @@ void wxRichTextCtrl::OnContextMenu(wxContextMenuEvent& event)
         return;
     }
 
+    ShowContextMenu(m_contextMenu, event.GetPosition());
+}
+
+// Prepares the context menu, adding appropriate property-editing commands.
+// Returns the number of property commands added.
+int wxRichTextCtrl::PrepareContextMenu(wxMenu* menu, const wxPoint& pt, bool addPropertyCommands)
+{
     wxClientDC dc(this);
     PrepareDC(dc);
     dc.SetFont(GetFont());
 
+    m_contextMenuPropertiesInfo.Clear();
+
     long position = 0;
-    wxPoint pt = event.GetPosition();
-    wxPoint logicalPt = GetLogicalPoint(ScreenToClient(pt));
     wxRichTextObject* hitObj = NULL;
     wxRichTextObject* contextObj = NULL;
-    int hit = GetFocusObject()->HitTest(dc, logicalPt, position, & hitObj, & contextObj);
+    if (pt != wxDefaultPosition)
+    {
+        wxPoint logicalPt = GetLogicalPoint(ScreenToClient(pt));
+        wxRichTextDrawingContext context(& GetBuffer());
+        int hit = GetBuffer().HitTest(dc, context, logicalPt, position, & hitObj, & contextObj);
 
-    m_contextMenuPropertiesInfo.Clear();
+        if (hit == wxRICHTEXT_HITTEST_ON || hit == wxRICHTEXT_HITTEST_BEFORE || hit == wxRICHTEXT_HITTEST_AFTER)
+        {
+            wxRichTextParagraphLayoutBox* actualContainer = wxDynamicCast(contextObj, wxRichTextParagraphLayoutBox);
+            if (hitObj && actualContainer)
+            {
+                if (actualContainer->AcceptsFocus())
+                {
+                    SetFocusObject(actualContainer, false /* don't set caret position yet */);
+                    SetCaretPositionAfterClick(actualContainer, position, hit);
+                }
 
-    if (hit == wxRICHTEXT_HITTEST_ON || hit == wxRICHTEXT_HITTEST_BEFORE || hit == wxRICHTEXT_HITTEST_AFTER)
+                if (addPropertyCommands)
+                    m_contextMenuPropertiesInfo.AddItems(this, actualContainer, hitObj);
+            }
+            else
+            {
+                if (addPropertyCommands)
+                    m_contextMenuPropertiesInfo.AddItems(this, GetFocusObject(), NULL);
+            }
+        }
+        else
+        {
+            if (addPropertyCommands)
+                m_contextMenuPropertiesInfo.AddItems(this, GetFocusObject(), NULL);
+        }
+    }
+    else
     {
+        // Invoked from the keyboard, so don't set the caret position and don't use the event
+        // position
+        hitObj = GetFocusObject()->GetLeafObjectAtPosition(m_caretPosition+1);
+        if (hitObj)
+            contextObj = hitObj->GetParentContainer();
+        else
+            contextObj = GetFocusObject();
+
         wxRichTextParagraphLayoutBox* actualContainer = wxDynamicCast(contextObj, wxRichTextParagraphLayoutBox);
         if (hitObj && actualContainer)
         {
-            if (actualContainer->AcceptsFocus())
-            {
-                SetFocusObject(actualContainer, false /* don't set caret position yet */);
-                SetCaretPositionAfterClick(actualContainer, position, hit);
-            }
-
-            m_contextMenuPropertiesInfo.AddItems(actualContainer, hitObj);
+            if (addPropertyCommands)
+                m_contextMenuPropertiesInfo.AddItems(this, actualContainer, hitObj);
         }
         else
-            m_contextMenuPropertiesInfo.AddItems(GetFocusObject(), NULL);
+        {
+            if (addPropertyCommands)
+                m_contextMenuPropertiesInfo.AddItems(this, GetFocusObject(), NULL);
+        }
     }
-    else
+
+    if (menu)
     {
-        m_contextMenuPropertiesInfo.AddItems(GetFocusObject(), NULL);
+        if (addPropertyCommands)
+            m_contextMenuPropertiesInfo.AddMenuItems(menu);
+        return m_contextMenuPropertiesInfo.GetCount();
     }
+    else
+        return 0;
+}
 
-    if (m_contextMenu)
+// Shows the context menu, adding appropriate property-editing commands
+bool wxRichTextCtrl::ShowContextMenu(wxMenu* menu, const wxPoint& pt, bool addPropertyCommands)
+{
+    if (menu)
     {
-        m_contextMenuPropertiesInfo.AddMenuItems(m_contextMenu);
-        PopupMenu(m_contextMenu);
+        PrepareContextMenu(menu, pt, addPropertyCommands);
+        PopupMenu(menu);
+        return true;
     }
+    else
+        return false;
 }
 
 bool wxRichTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
@@ -3304,6 +3680,11 @@ bool wxRichTextCtrl::GetUncombinedStyle(long position, wxRichTextAttr& style, wx
     return container->GetUncombinedStyle(position, style);
 }
 
+bool wxRichTextCtrl::SetProperties(const wxRichTextRange& range, const wxRichTextProperties& properties, int flags)
+{
+    return GetFocusObject()->SetProperties(range.ToInternal(), properties, flags);
+}
+
 /// Set font, and also the buffer attributes
 bool wxRichTextCtrl::SetFont(const wxFont& font)
 {
@@ -3357,13 +3738,26 @@ void wxRichTextCtrl::PositionCaret(wxRichTextParagraphLayoutBox* container)
             if (GetCaret()->GetSize() != newSz)
                 GetCaret()->SetSize(newSz);
 
-            int halfSize = newSz.y/2;
-            // If the caret is beyond the margin, hide it by moving it out of the way
-            if (((pt.y + halfSize) < GetBuffer().GetTopMargin()) || ((pt.y + halfSize) > (GetClientSize().y - GetBuffer().GetBottomMargin())))
+            // Adjust size so the caret size and position doesn't appear in the margins
+            if (((pt.y + newSz.y) <= GetBuffer().GetTopMargin()) || (pt.y >= (GetClientSize().y - GetBuffer().GetBottomMargin())))
             {
                 pt.x = -200;
                 pt.y = -200;
             }
+            else if (pt.y < GetBuffer().GetTopMargin() && (pt.y + newSz.y) > GetBuffer().GetTopMargin())
+            {
+                newSz.y -= (GetBuffer().GetTopMargin() - pt.y);
+                if (newSz.y > 0)
+                {
+                    pt.y = GetBuffer().GetTopMargin();
+                    GetCaret()->SetSize(newSz);
+                }
+            }
+            else if (pt.y < (GetClientSize().y - GetBuffer().GetBottomMargin()) && (pt.y + newSz.y) > (GetClientSize().y - GetBuffer().GetBottomMargin()))
+            {
+                newSz.y = GetClientSize().y - GetBuffer().GetBottomMargin() - pt.y;
+                GetCaret()->SetSize(newSz);
+            }
 
             GetCaret()->Move(pt);
             GetCaret()->Show();
@@ -3385,7 +3779,8 @@ bool wxRichTextCtrl::GetCaretPositionForIndex(long position, wxRect& rect, wxRic
     if (!container)
         container = GetFocusObject();
 
-    if (container->FindPosition(dc, position, pt, & height, m_caretAtLineStart))
+    wxRichTextDrawingContext context(& GetBuffer());
+    if (container->FindPosition(dc, context, position, pt, & height, m_caretAtLineStart))
     {
         // Caret height can't be zero
         if (height == 0)
@@ -3465,9 +3860,10 @@ bool wxRichTextCtrl::LayoutContent(bool onlyVisibleRect)
 
         PrepareDC(dc);
 
+        wxRichTextDrawingContext context(& GetBuffer());
         GetBuffer().Defragment();
         GetBuffer().UpdateRanges();     // If items were deleted, ranges need recalculation
-        GetBuffer().Layout(dc, availableSpace, flags);
+        GetBuffer().Layout(dc, context, availableSpace, availableSpace, flags);
         GetBuffer().Invalidate(wxRICHTEXT_NONE);
 
         if (!IsFrozen())
@@ -3477,7 +3873,7 @@ bool wxRichTextCtrl::LayoutContent(bool onlyVisibleRect)
     return true;
 }
 
-/// Is all of the selection bold?
+/// Is all of the selection, or the current caret position, bold?
 bool wxRichTextCtrl::IsSelectionBold()
 {
     if (HasSelection())
@@ -3507,7 +3903,7 @@ bool wxRichTextCtrl::IsSelectionBold()
     return false;
 }
 
-/// Is all of the selection italics?
+/// Is all of the selection, or the current caret position, italics?
 bool wxRichTextCtrl::IsSelectionItalics()
 {
     if (HasSelection())
@@ -3537,7 +3933,7 @@ bool wxRichTextCtrl::IsSelectionItalics()
     return false;
 }
 
-/// Is all of the selection underlined?
+/// Is all of the selection, or the current caret position, underlined?
 bool wxRichTextCtrl::IsSelectionUnderlined()
 {
     if (HasSelection())
@@ -3567,6 +3963,33 @@ bool wxRichTextCtrl::IsSelectionUnderlined()
     return false;
 }
 
+/// Does all of the selection, or the current caret position, have this wxTextAttrEffects flag(s)?
+bool wxRichTextCtrl::DoesSelectionHaveTextEffectFlag(int flag)
+{
+    wxRichTextAttr attr;
+    attr.SetFlags(wxTEXT_ATTR_EFFECTS);
+    attr.SetTextEffectFlags(flag);
+    attr.SetTextEffects(flag);
+
+    if (HasSelection())
+    {
+        return HasCharacterAttributes(GetSelectionRange(), attr);
+    }
+    else
+    {
+        // If no selection, then we need to combine current style with default style
+        // to see what the effect would be if we started typing.
+        long pos = GetAdjustedCaretPosition(GetCaretPosition());
+        if (GetStyle(pos, attr))
+        {
+            if (IsDefaultStyleShowing())
+                wxRichTextApplyStyle(attr, GetDefaultStyleEx());
+            return (attr.GetTextEffectFlags() & flag) != 0;
+        }
+    }
+    return false;
+}
+
 /// Apply bold to the selection
 bool wxRichTextCtrl::ApplyBoldToSelection()
 {
@@ -3621,6 +4044,28 @@ bool wxRichTextCtrl::ApplyUnderlineToSelection()
     return true;
 }
 
+/// Apply the wxTextAttrEffects flag(s) to the selection, or the current caret position if there's no selection
+bool wxRichTextCtrl::ApplyTextEffectToSelection(int flags)
+{
+    wxRichTextAttr attr;
+    attr.SetFlags(wxTEXT_ATTR_EFFECTS);
+    attr.SetTextEffectFlags(flags);
+    if (!DoesSelectionHaveTextEffectFlag(flags))
+        attr.SetTextEffects(flags);
+     else
+        attr.SetTextEffects(attr.GetTextEffectFlags() & ~flags);
+
+    if (HasSelection())
+        return SetStyleEx(GetSelectionRange(), attr, wxRICHTEXT_SETSTYLE_WITH_UNDO|wxRICHTEXT_SETSTYLE_OPTIMIZE|wxRICHTEXT_SETSTYLE_CHARACTERS_ONLY);
+    else
+    {
+        wxRichTextAttr current = GetDefaultStyleEx();
+        current.Apply(attr);
+        SetAndShowDefaultStyle(current);
+    }
+    return true;
+}
+
 /// Is all of the selection aligned according to the specified flag?
 bool wxRichTextCtrl::IsSelectionAligned(wxTextAttrAlignment alignment)
 {
@@ -3691,10 +4136,22 @@ bool wxRichTextCtrl::ApplyStyle(wxRichTextStyleDefinition* def)
         // to change its style independently.
         flags |= wxRICHTEXT_SETSTYLE_PARAGRAPHS_ONLY;
     }
-    else
+    else if (def->IsKindOf(CLASSINFO(wxRichTextCharacterStyleDefinition)))
         attr.SetCharacterStyleName(def->GetName());
+    else if (def->IsKindOf(CLASSINFO(wxRichTextBoxStyleDefinition)))
+        attr.GetTextBoxAttr().SetBoxStyleName(def->GetName());
 
-    if (HasSelection())
+    if (def->IsKindOf(CLASSINFO(wxRichTextBoxStyleDefinition)))
+    {
+        if (GetFocusObject() && (GetFocusObject() != & GetBuffer()))
+        {
+            SetStyle(GetFocusObject(), attr);
+            return true;
+        }
+        else
+            return false;
+    }
+    else if (HasSelection())
         return SetStyleEx(GetSelectionRange(), attr, flags);
     else
     {
@@ -3751,7 +4208,15 @@ bool wxRichTextCtrl::SetDefaultStyleToCursorStyle()
     // If at the start of a paragraph, use the next position.
     long pos = GetAdjustedCaretPosition(GetCaretPosition());
 
-    if (GetUncombinedStyle(pos, attr))
+    wxRichTextObject* obj = GetFocusObject()->GetLeafObjectAtPosition(pos);
+    if (obj && obj->IsTopLevel())
+    {
+        // Don't use the attributes of a top-level object, since they might apply
+        // to content of the object, e.g. background colour.
+        SetDefaultStyle(wxRichTextAttr());
+        return true;
+    }
+    else if (GetUncombinedStyle(pos, attr))
     {
         SetDefaultStyle(attr);
         return true;
@@ -3976,6 +4441,9 @@ bool wxRichTextCtrl::SetFocusObject(wxRichTextParagraphLayoutBox* obj, bool setC
     wxRichTextParagraphLayoutBox* oldContainer = GetFocusObject();
     bool changingContainer = (m_focusObject != obj);
 
+    if (changingContainer && HasSelection())
+        SelectNone();
+
     m_focusObject = obj;
 
     if (!obj)
@@ -4007,6 +4475,93 @@ bool wxRichTextCtrl::SetFocusObject(wxRichTextParagraphLayoutBox* obj, bool setC
     return true;
 }
 
+#if wxUSE_DRAG_AND_DROP
+void wxRichTextCtrl::OnDrop(wxCoord WXUNUSED(x), wxCoord WXUNUSED(y), wxDragResult def, wxDataObject* DataObj)
+{
+    m_preDrag = false;
+
+    if ((def != wxDragCopy) && (def != wxDragMove))
+    {
+        return;
+    }
+
+    if (!GetSelection().IsValid())
+    {
+        return;
+    }
+
+    wxRichTextParagraphLayoutBox* originContainer = GetSelection().GetContainer();
+    wxRichTextParagraphLayoutBox* destContainer = GetFocusObject(); // This will be the drop container, not necessarily the same as the origin one
+
+    wxRichTextBuffer* richTextBuffer = ((wxRichTextBufferDataObject*)DataObj)->GetRichTextBuffer();
+    if (richTextBuffer)
+    {
+        long position = GetCaretPosition();
+        wxRichTextRange selectionrange = GetInternalSelectionRange();
+        if (selectionrange.Contains(position) && (def == wxDragMove))
+        {
+            // It doesn't make sense to move onto itself
+            return;
+        }
+
+        // If we're moving, and the data is being moved forward, we need to drop first, then delete the selection
+        // If moving backwards, we need to delete then drop. If we're copying (or doing nothing) we don't delete anyway
+        bool DeleteAfter = (def == wxDragMove) && (position > selectionrange.GetEnd());
+        if ((def == wxDragMove) && !DeleteAfter)
+        {
+            // We can't use e.g. DeleteSelectedContent() as it uses the focus container
+            originContainer->DeleteRangeWithUndo(selectionrange, this, &GetBuffer());
+        }
+
+        destContainer->InsertParagraphsWithUndo(&GetBuffer(), position+1, *richTextBuffer, this, 0);
+        ShowPosition(position + richTextBuffer->GetOwnRange().GetEnd());
+
+        delete richTextBuffer;
+
+        if (DeleteAfter)
+        {
+            // We can't use e.g. DeleteSelectedContent() as it uses the focus container
+            originContainer->DeleteRangeWithUndo(selectionrange, this, &GetBuffer());
+        }
+
+        SelectNone();
+        Refresh();
+    }
+}
+#endif // wxUSE_DRAG_AND_DROP
+
+
+#if wxUSE_DRAG_AND_DROP
+bool wxRichTextDropSource::GiveFeedback(wxDragResult WXUNUSED(effect))
+{
+    wxCHECK_MSG(m_rtc, false, wxT("NULL m_rtc"));
+
+    long position = 0;
+    int hit = 0;
+    wxRichTextObject* hitObj = NULL;
+    wxRichTextParagraphLayoutBox* container = m_rtc->FindContainerAtPoint(m_rtc->ScreenToClient(wxGetMousePosition()), position, hit, hitObj);
+
+    if (!(hit & wxRICHTEXT_HITTEST_NONE) && container && container->AcceptsFocus())
+    {
+        m_rtc->StoreFocusObject(container);
+        m_rtc->SetCaretPositionAfterClick(container, position, hit);
+    }
+
+    return false;  // so that the base-class sets a cursor
+}
+#endif // wxUSE_DRAG_AND_DROP
+
+bool wxRichTextCtrl::CanDeleteRange(wxRichTextParagraphLayoutBox& WXUNUSED(container), const wxRichTextRange& WXUNUSED(range)) const
+{
+    return true;
+}
+
+bool wxRichTextCtrl::CanInsertContent(wxRichTextParagraphLayoutBox& WXUNUSED(container), long WXUNUSED(pos)) const
+{
+    return true;
+}
+
+
 #if wxRICHTEXT_USE_OWN_CARET
 
 // ----------------------------------------------------------------------------
@@ -4016,6 +4571,7 @@ bool wxRichTextCtrl::SetFocusObject(wxRichTextParagraphLayoutBox* obj, bool setC
 void wxRichTextCaret::Init()
 {
     m_hasFocus = true;
+    m_refreshEnabled = true;
 
     m_xOld =
     m_yOld = -1;
@@ -4060,7 +4616,7 @@ void wxRichTextCaret::DoMove()
 
         if (m_xOld != -1 && m_yOld != -1)
         {
-            if (m_richTextCtrl)
+            if (m_richTextCtrl && m_refreshEnabled)
             {
                 wxRect rect(GetPosition(), GetSize());
                 m_richTextCtrl->RefreshRect(rect, false);
@@ -4111,7 +4667,7 @@ void wxRichTextCaret::OnKillFocus()
 
 void wxRichTextCaret::Refresh()
 {
-    if (m_richTextCtrl)
+    if (m_richTextCtrl && m_refreshEnabled)
     {
         wxRect rect(GetPosition(), GetSize());
         m_richTextCtrl->RefreshRect(rect, false);
@@ -4165,12 +4721,11 @@ bool wxRichTextContextMenuPropertiesInfo::AddItem(const wxString& label, wxRichT
 int wxRichTextContextMenuPropertiesInfo::AddMenuItems(wxMenu* menu, int startCmd) const
 {
     wxMenuItem* item = menu->FindItem(startCmd);
-    // If none of the standard properties identifiers are in the menu, assume it's
-    // a custom menu without properties commands, and don't add them.
-    if (item)
+    // If none of the standard properties identifiers are in the menu, add them if necessary.
+    // If no items to add, just set the text to something generic
+    if (GetCount() == 0)
     {
-        // If no items, to add just set the text to something generic
-        if (GetCount() == 0)
+        if (item)
         {
             menu->SetLabel(startCmd, _("&Properties"));
 
@@ -4184,50 +4739,59 @@ int wxRichTextContextMenuPropertiesInfo::AddMenuItems(wxMenu* menu, int startCmd
                 }
             }
         }
-        else
+    }
+    else
+    {
+        int i;
+        int pos = -1;
+        // Find the position of the first properties item
+        for (i = 0; i < (int) menu->GetMenuItemCount(); i++)
         {
-            int i;
-            int pos = -1;
-            // Find the position of the first properties item
-            for (i = 0; i < (int) menu->GetMenuItemCount(); i++)
+            wxMenuItem* item = menu->FindItemByPosition(i);
+            if (item && item->GetId() == startCmd)
             {
-                wxMenuItem* item = menu->FindItemByPosition(i);
-                if (item && item->GetId() == startCmd)
-                {
-                    pos = i;
-                    break;
-                }
+                pos = i;
+                break;
             }
+        }
 
-            if (pos != -1)
+        if (pos != -1)
+        {
+            int insertBefore = pos+1;
+            for (i = startCmd; i < startCmd+GetCount(); i++)
             {
-                int insertBefore = pos+1;
-                for (i = startCmd; i < startCmd+GetCount(); i++)
+                if (menu->FindItem(i))
                 {
-                    if (menu->FindItem(i))
-                    {
-                        menu->SetLabel(i, m_labels[i - startCmd]);
-                    }
+                    menu->SetLabel(i, m_labels[i - startCmd]);
+                }
+                else
+                {
+                    if (insertBefore >= (int) menu->GetMenuItemCount())
+                        menu->Append(i, m_labels[i - startCmd]);
                     else
-                    {
-                        if (insertBefore >= (int) menu->GetMenuItemCount())
-                            menu->Append(i, m_labels[i - startCmd]);
-                        else
-                            menu->Insert(insertBefore, i, m_labels[i - startCmd]);
-                    }
-                    insertBefore ++;
+                        menu->Insert(insertBefore, i, m_labels[i - startCmd]);
                 }
+                insertBefore ++;
+            }
 
-                // Delete any old items still left on the menu
-                for (i = startCmd + GetCount(); i < startCmd+3; i++)
+            // Delete any old items still left on the menu
+            for (i = startCmd + GetCount(); i < startCmd+3; i++)
+            {
+                if (menu->FindItem(i))
                 {
-                    if (menu->FindItem(i))
-                    {
-                        menu->Delete(i);
-                    }
+                    menu->Delete(i);
                 }
             }
         }
+        else
+        {
+            // No existing property identifiers were found, so append to the end of the menu.
+            menu->AppendSeparator();
+            for (i = startCmd; i < startCmd+GetCount(); i++)
+            {
+                menu->Append(i, m_labels[i - startCmd]);
+            }
+        }
     }
 
     return GetCount();
@@ -4235,17 +4799,17 @@ int wxRichTextContextMenuPropertiesInfo::AddMenuItems(wxMenu* menu, int startCmd
 
 // Add appropriate menu items for the current container and clicked on object
 // (and container's parent, if appropriate).
-int wxRichTextContextMenuPropertiesInfo::AddItems(wxRichTextObject* container, wxRichTextObject* obj)
+int wxRichTextContextMenuPropertiesInfo::AddItems(wxRichTextCtrl* ctrl, wxRichTextObject* container, wxRichTextObject* obj)
 {
     Clear();
-    if (obj && obj->CanEditProperties())
-        AddItem(obj->GetPropertiesMenuLabel(), obj);
+    if (obj && ctrl->CanEditProperties(obj))
+        AddItem(ctrl->GetPropertiesMenuLabel(obj), obj);
 
-    if (container && container != obj && container->CanEditProperties() && m_labels.Index(container->GetPropertiesMenuLabel()) == wxNOT_FOUND)
-        AddItem(container->GetPropertiesMenuLabel(), container);
+    if (container && container != obj && ctrl->CanEditProperties(container) && m_labels.Index(ctrl->GetPropertiesMenuLabel(container)) == wxNOT_FOUND)
+        AddItem(ctrl->GetPropertiesMenuLabel(container), container);
 
-    if (container && container->GetParent() && container->GetParent()->CanEditProperties() && m_labels.Index(container->GetParent()->GetPropertiesMenuLabel()) == wxNOT_FOUND)
-        AddItem(container->GetParent()->GetPropertiesMenuLabel(), container->GetParent());
+    if (container && container->GetParent() && ctrl->CanEditProperties(container->GetParent()) && m_labels.Index(ctrl->GetPropertiesMenuLabel(container->GetParent())) == wxNOT_FOUND)
+        AddItem(ctrl->GetPropertiesMenuLabel(container->GetParent()), container->GetParent());
 
     return GetCount();
 }