Font (possible) fix

[wxWidgets.git] / src / richtext / richtextbuffer.cpp

diff --git a/src/richtext/richtextbuffer.cpp b/src/richtext/richtextbuffer.cpp
index ab68f2f3930344cc652a16559070bfeb9e8c8f72..82ae7f3c0d32651445aa8f8d43fc7214a3a0b89a 100644 (file)
--- a/src/richtext/richtextbuffer.cpp
+++ b/src/richtext/richtextbuffer.cpp
@@ -1,10 +1,10 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        richtextbuffer.cpp
+// Name:        richtext/richtextbuffer.cpp

 // Purpose:     Buffer for wxRichTextCtrl
 // Author:      Julian Smart
 // Purpose:     Buffer for wxRichTextCtrl
 // Author:      Julian Smart

-// Modified by: 
+// Modified by:

 // Created:     2005-09-30
 // Created:     2005-09-30

-// RCS-ID:      
+// RCS-ID:      $Id$

 // Copyright:   (c) Julian Smart
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 // Copyright:   (c) Julian Smart
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////


@@ -26,6 +26,7 @@
 
 #include "wx/filename.h"
 #include "wx/clipbrd.h"
 
 #include "wx/filename.h"
 #include "wx/clipbrd.h"

+#include "wx/dataobj.h"

 #include "wx/wfstream.h"
 #include "wx/module.h"
 #include "wx/mstream.h"
 #include "wx/wfstream.h"
 #include "wx/module.h"
 #include "wx/mstream.h"


@@ -174,9 +175,10 @@ bool wxRichTextCompositeObject::RemoveChild(wxRichTextObject* child, bool delete
     wxRichTextObjectList::compatibility_iterator node = m_children.Find(child);
     if (node)
     {
     wxRichTextObjectList::compatibility_iterator node = m_children.Find(child);
     if (node)
     {

+        wxRichTextObject* obj = node->GetData();
+        m_children.Erase(node);

         if (deleteChild)
         if (deleteChild)

-            delete node->GetData();
-        delete node;
+            delete obj;

 
         return true;
     }
 
         return true;
     }


@@ -195,7 +197,7 @@ bool wxRichTextCompositeObject::DeleteChildren()
         child->Dereference(); // Only delete if reference count is zero
 
         node = node->GetNext();
         child->Dereference(); // Only delete if reference count is zero
 
         node = node->GetNext();

-        delete oldNode;
+        m_children.Erase(oldNode);

     }
 
     return true;
     }
 
     return true;


@@ -293,12 +295,12 @@ void wxRichTextCompositeObject::CalculateRange(long start, long& end)
 bool wxRichTextCompositeObject::DeleteRange(const wxRichTextRange& range)
 {
     wxRichTextObjectList::compatibility_iterator node = m_children.GetFirst();
 bool wxRichTextCompositeObject::DeleteRange(const wxRichTextRange& range)
 {
     wxRichTextObjectList::compatibility_iterator node = m_children.GetFirst();

-    
+

     while (node)
     {
         wxRichTextObject* obj = (wxRichTextObject*) node->GetData();
         wxRichTextObjectList::compatibility_iterator next = node->GetNext();
     while (node)
     {
         wxRichTextObject* obj = (wxRichTextObject*) node->GetData();
         wxRichTextObjectList::compatibility_iterator next = node->GetNext();

-        
+

         // Delete the range in each paragraph
 
         // When a chunk has been deleted, internally the content does not
         // Delete the range in each paragraph
 
         // When a chunk has been deleted, internally the content does not


@@ -307,7 +309,7 @@ bool wxRichTextCompositeObject::DeleteRange(const wxRichTextRange& range)
         // If you may delete content from the same object twice, recalculate
         // the ranges inbetween DeleteRange calls by calling CalculateRanges, and
         // adjust the range you're deleting accordingly.
         // If you may delete content from the same object twice, recalculate
         // the ranges inbetween DeleteRange calls by calling CalculateRanges, and
         // adjust the range you're deleting accordingly.

-        
+

         if (!obj->GetRange().IsOutside(range))
         {
             obj->DeleteRange(range);
         if (!obj->GetRange().IsOutside(range))
         {
             obj->DeleteRange(range);


@@ -318,13 +320,13 @@ bool wxRichTextCompositeObject::DeleteRange(const wxRichTextRange& range)
             {
                 // An empty paragraph has length 1, so won't be deleted unless the
                 // whole range is deleted.
             {
                 // An empty paragraph has length 1, so won't be deleted unless the
                 // whole range is deleted.

-                RemoveChild(obj, true);       
+                RemoveChild(obj, true);

             }
         }
             }
         }

-        
+

         node = next;
     }
         node = next;
     }

-    
+

     return true;
 }
 
     return true;
 }
 


@@ -340,9 +342,9 @@ wxString wxRichTextCompositeObject::GetTextForRange(const wxRichTextRange& range
         if (!child->GetRange().IsOutside(range))
         {
             childRange.LimitTo(child->GetRange());
         if (!child->GetRange().IsOutside(range))
         {
             childRange.LimitTo(child->GetRange());

-            
+

             wxString childText = child->GetTextForRange(childRange);
             wxString childText = child->GetTextForRange(childRange);

-            
+

             text += childText;
         }
         node = node->GetNext();
             text += childText;
         }
         node = node->GetNext();


@@ -359,7 +361,7 @@ bool wxRichTextCompositeObject::Defragment()
     {
         wxRichTextObject* child = node->GetData();
         wxRichTextCompositeObject* composite = wxDynamicCast(child, wxRichTextCompositeObject);
     {
         wxRichTextObject* child = node->GetData();
         wxRichTextCompositeObject* composite = wxDynamicCast(child, wxRichTextCompositeObject);

-        if (composite)        
+        if (composite)

             composite->Defragment();
 
         if (node->GetNext())
             composite->Defragment();
 
         if (node->GetNext())


@@ -368,7 +370,7 @@ bool wxRichTextCompositeObject::Defragment()
             if (child->CanMerge(nextChild) && child->Merge(nextChild))
             {
                 nextChild->Dereference();
             if (child->CanMerge(nextChild) && child->Merge(nextChild))
             {
                 nextChild->Dereference();

-                delete node->GetNext();
+                m_children.Erase(node->GetNext());

 
                 // Don't set node -- we'll see if we can merge again with the next
                 // child.
 
                 // Don't set node -- we'll see if we can merge again with the next
                 // child.


@@ -480,6 +482,7 @@ void wxRichTextParagraphLayoutBox::Init()
     // For now, assume is the only box and has no initial size.
     m_range = wxRichTextRange(0, -1);
 
     // For now, assume is the only box and has no initial size.
     m_range = wxRichTextRange(0, -1);
 

+    m_invalidRange.SetRange(-1, -1);

     m_leftMargin = 4;
     m_rightMargin = 4;
     m_topMargin = 4;
     m_leftMargin = 4;
     m_rightMargin = 4;
     m_topMargin = 4;


@@ -494,11 +497,11 @@ bool wxRichTextParagraphLayoutBox::Draw(wxDC& dc, const wxRichTextRange& range,
     {
         wxRichTextParagraph* child = wxDynamicCast(node->GetData(), wxRichTextParagraph);
         wxASSERT (child != NULL);
     {
         wxRichTextParagraph* child = wxDynamicCast(node->GetData(), wxRichTextParagraph);
         wxASSERT (child != NULL);

-        
+

         if (child && !child->GetRange().IsOutside(range))
         {
             wxRect childRect(child->GetPosition(), child->GetCachedSize());
         if (child && !child->GetRange().IsOutside(range))
         {
             wxRect childRect(child->GetPosition(), child->GetCachedSize());

-            
+

             if (childRect.GetTop() > rect.GetBottom() || childRect.GetBottom() < rect.GetTop())
             {
                 // Skip
             if (childRect.GetTop() > rect.GetBottom() || childRect.GetBottom() < rect.GetTop())
             {
                 // Skip


@@ -515,7 +518,31 @@ bool wxRichTextParagraphLayoutBox::Draw(wxDC& dc, const wxRichTextRange& range,
 /// Lay the item out
 bool wxRichTextParagraphLayoutBox::Layout(wxDC& dc, const wxRect& rect, int style)
 {
 /// Lay the item out
 bool wxRichTextParagraphLayoutBox::Layout(wxDC& dc, const wxRect& rect, int style)
 {

-    wxRect availableSpace(rect.x + m_leftMargin,
+    wxRect availableSpace;
+    bool formatRect = (style & wxRICHTEXT_LAYOUT_SPECIFIED_RECT) == wxRICHTEXT_LAYOUT_SPECIFIED_RECT;
+
+    // If only laying out a specific area, the passed rect has a different meaning:
+    // the visible part of the buffer.
+    if (formatRect)
+    {
+        availableSpace = wxRect(0 + m_leftMargin,
+                          0 + m_topMargin,
+                          rect.width - m_leftMargin - m_rightMargin,
+                          rect.height);
+
+        // Invalidate the part of the buffer from the first visible line
+        // to the end. If other parts of the buffer are currently invalid,
+        // then they too will be taken into account if they are above
+        // the visible point.
+        long startPos = 0;
+        wxRichTextLine* line = GetLineAtYPosition(rect.y);
+        if (line)
+            startPos = line->GetAbsoluteRange().GetStart();
+
+        Invalidate(wxRichTextRange(startPos, GetRange().GetEnd()));
+    }
+    else
+        availableSpace = wxRect(rect.x + m_leftMargin,

                           rect.y + m_topMargin,
                           rect.width - m_leftMargin - m_rightMargin,
                           rect.height - m_topMargin - m_bottomMargin);
                           rect.y + m_topMargin,
                           rect.width - m_leftMargin - m_rightMargin,
                           rect.height - m_topMargin - m_bottomMargin);


@@ -523,6 +550,41 @@ bool wxRichTextParagraphLayoutBox::Layout(wxDC& dc, const wxRect& rect, int styl
     int maxWidth = 0;
 
     wxRichTextObjectList::compatibility_iterator node = m_children.GetFirst();
     int maxWidth = 0;
 
     wxRichTextObjectList::compatibility_iterator node = m_children.GetFirst();

+
+    bool layoutAll = true;
+
+    // Get invalid range, rounding to paragraph start/end.
+    wxRichTextRange invalidRange = GetInvalidRange(true);
+
+    if (invalidRange == wxRICHTEXT_NONE && !formatRect)
+        return true;
+
+    if (invalidRange == wxRICHTEXT_ALL)
+        layoutAll = true;
+    else    // If we know what range is affected, start laying out from that point on.
+        if (invalidRange.GetStart() > GetRange().GetStart())
+    {
+        wxRichTextParagraph* firstParagraph = GetParagraphAtPosition(invalidRange.GetStart());
+        if (firstParagraph)
+        {
+            wxRichTextObjectList::compatibility_iterator firstNode = m_children.Find(firstParagraph);
+            wxRichTextObjectList::compatibility_iterator previousNode = firstNode ? firstNode->GetPrevious() : wxRichTextObjectList::compatibility_iterator();
+            if (firstNode && previousNode)
+            {
+                wxRichTextParagraph* previousParagraph = wxDynamicCast(previousNode->GetData(), wxRichTextParagraph);
+                availableSpace.y = previousParagraph->GetPosition().y + previousParagraph->GetCachedSize().y;
+
+                // Now we're going to start iterating from the first affected paragraph.
+                node = firstNode;
+
+                layoutAll = false;
+            }
+        }
+    }
+
+    // A way to force speedy rest-of-buffer layout (the 'else' below)
+    bool forceQuickLayout = false;
+

     while (node)
     {
         // Assume this box only contains paragraphs
     while (node)
     {
         // Assume this box only contains paragraphs


@@ -530,11 +592,48 @@ bool wxRichTextParagraphLayoutBox::Layout(wxDC& dc, const wxRect& rect, int styl
         wxRichTextParagraph* child = wxDynamicCast(node->GetData(), wxRichTextParagraph);
         wxASSERT (child != NULL);
 
         wxRichTextParagraph* child = wxDynamicCast(node->GetData(), wxRichTextParagraph);
         wxASSERT (child != NULL);
 

-        child->Layout(dc, availableSpace, style);
+        // TODO: what if the child hasn't been laid out (e.g. involved in Undo) but still has 'old' lines
+        if (child && !forceQuickLayout && (layoutAll || child->GetLines().GetCount() == 0 || !child->GetRange().IsOutside(invalidRange)))
+        {
+            child->Layout(dc, availableSpace, style);
+
+            // Layout must set the cached size
+            availableSpace.y += child->GetCachedSize().y;
+            maxWidth = wxMax(maxWidth, child->GetCachedSize().x);
+
+            // If we're just formatting the visible part of the buffer,
+            // and we're now past the bottom of the window, start quick
+            // layout.
+            if (formatRect && child->GetPosition().y > rect.GetBottom())
+                forceQuickLayout = true;
+        }
+        else
+        {
+            // We're outside the immediately affected range, so now let's just
+            // move everything up or down. This assumes that all the children have previously
+            // been laid out and have wrapped line lists associated with them.
+            // TODO: check all paragraphs before the affected range.
+
+            int inc = availableSpace.y - child->GetPosition().y;
+
+            while (node)
+            {
+                wxRichTextParagraph* child = wxDynamicCast(node->GetData(), wxRichTextParagraph);
+                if (child)
+                {
+                    if (child->GetLines().GetCount() == 0)
+                        child->Layout(dc, availableSpace, style);
+                    else
+                        child->SetPosition(wxPoint(child->GetPosition().x, child->GetPosition().y + inc));
+
+                    availableSpace.y += child->GetCachedSize().y;
+                    maxWidth = wxMax(maxWidth, child->GetCachedSize().x);
+                }

 
 

-        // Layout must set the cached size
-        availableSpace.y += child->GetCachedSize().y;
-        maxWidth = wxMax(maxWidth, child->GetCachedSize().x);
+                node = node->GetNext();
+            }
+            break;
+        }

 
         node = node->GetNext();
     }
 
         node = node->GetNext();
     }


@@ -542,6 +641,7 @@ bool wxRichTextParagraphLayoutBox::Layout(wxDC& dc, const wxRect& rect, int styl
     SetCachedSize(wxSize(maxWidth, availableSpace.y));
 
     m_dirty = false;
     SetCachedSize(wxSize(maxWidth, availableSpace.y));
 
     m_dirty = false;

+    m_invalidRange = wxRICHTEXT_NONE;

 
     return true;
 }
 
     return true;
 }


@@ -557,8 +657,8 @@ bool wxRichTextParagraphLayoutBox::GetRangeSize(const wxRichTextRange& range, wx
 {
     wxSize sz;
 
 {
     wxSize sz;
 

-    wxRichTextObjectList::compatibility_iterator startPara = NULL;
-    wxRichTextObjectList::compatibility_iterator endPara = NULL;
+    wxRichTextObjectList::compatibility_iterator startPara = wxRichTextObjectList::compatibility_iterator();
+    wxRichTextObjectList::compatibility_iterator endPara = wxRichTextObjectList::compatibility_iterator();

 
     // First find the first paragraph whose starting position is within the range.
     wxRichTextObjectList::compatibility_iterator node = m_children.GetFirst();
 
     // First find the first paragraph whose starting position is within the range.
     wxRichTextObjectList::compatibility_iterator node = m_children.GetFirst();


@@ -670,15 +770,17 @@ wxRichTextLine* wxRichTextParagraphLayoutBox::GetLineAtPosition(long pos, bool c
         {
             wxRichTextLine* line = node2->GetData();
 
         {
             wxRichTextLine* line = node2->GetData();
 

-            if (line->GetRange().Contains(pos) ||
+            wxRichTextRange range = line->GetAbsoluteRange();
+
+            if (range.Contains(pos) ||

 
                 // If the position is end-of-paragraph, then return the last line of
                 // of the paragraph.
 
                 // If the position is end-of-paragraph, then return the last line of
                 // of the paragraph.

-                (line->GetRange().GetEnd() == child->GetRange().GetEnd()-1) && (pos == child->GetRange().GetEnd()))
+                (range.GetEnd() == child->GetRange().GetEnd()-1) && (pos == child->GetRange().GetEnd()))

                 return line;
 
             node2 = node2->GetNext();
                 return line;
 
             node2 = node2->GetNext();

-        }          
+        }

 
         node = node->GetNext();
     }
 
         node = node->GetNext();
     }


@@ -710,7 +812,7 @@ wxRichTextLine* wxRichTextParagraphLayoutBox::GetLineAtYPosition(int y) const
                 return line;
 
             node2 = node2->GetNext();
                 return line;
 
             node2 = node2->GetNext();

-        }          
+        }

 
         node = node->GetNext();
     }
 
         node = node->GetNext();
     }


@@ -744,7 +846,7 @@ int wxRichTextParagraphLayoutBox::GetLineCount() const
 /// Get the paragraph for a given line
 wxRichTextParagraph* wxRichTextParagraphLayoutBox::GetParagraphForLine(wxRichTextLine* line) const
 {
 /// Get the paragraph for a given line
 wxRichTextParagraph* wxRichTextParagraphLayoutBox::GetParagraphForLine(wxRichTextLine* line) const
 {

-    return GetParagraphAtPosition(line->GetRange().GetStart());
+    return GetParagraphAtPosition(line->GetAbsoluteRange().GetStart());

 }
 
 /// Get the line size at the given position
 }
 
 /// Get the line size at the given position


@@ -820,7 +922,7 @@ wxRichTextRange wxRichTextParagraphLayoutBox::AddParagraphs(const wxString& text
 
         i ++;
     }
 
         i ++;
     }

-    if (!line.IsEmpty())
+    if (!line.empty())

     {
         lastPara = new wxRichTextParagraph(line, this, & style);
         //wxLogDebug("Para Face = %s", lastPara->GetAttributes().GetFont().GetFaceName());
     {
         lastPara = new wxRichTextParagraph(line, this, & style);
         //wxLogDebug("Para Face = %s", lastPara->GetAttributes().GetFont().GetFaceName());


@@ -902,7 +1004,7 @@ bool wxRichTextParagraphLayoutBox::InsertFragment(long position, wxRichTextFragm
             while (objectNode)
             {
                 wxRichTextObject* newObj = objectNode->GetData()->Clone();
             while (objectNode)
             {
                 wxRichTextObject* newObj = objectNode->GetData()->Clone();

-                
+

                 if (!nextObject)
                 {
                     // Append
                 if (!nextObject)
                 {
                     // Append


@@ -913,7 +1015,7 @@ bool wxRichTextParagraphLayoutBox::InsertFragment(long position, wxRichTextFragm
                     // Insert before nextObject
                     para->InsertChild(newObj, nextObject);
                 }
                     // Insert before nextObject
                     para->InsertChild(newObj, nextObject);
                 }

-                
+

                 objectNode = objectNode->GetNext();
             }
 
                 objectNode = objectNode->GetNext();
             }
 


@@ -949,10 +1051,10 @@ bool wxRichTextParagraphLayoutBox::InsertFragment(long position, wxRichTextFragm
             while (objectNode)
             {
                 wxRichTextObject* newObj = objectNode->GetData()->Clone();
             while (objectNode)
             {
                 wxRichTextObject* newObj = objectNode->GetData()->Clone();

-                
+

                 // Append
                 para->AppendChild(newObj);
                 // Append
                 para->AppendChild(newObj);

-                
+

                 objectNode = objectNode->GetNext();
             }
 
                 objectNode = objectNode->GetNext();
             }
 


@@ -978,7 +1080,7 @@ bool wxRichTextParagraphLayoutBox::InsertFragment(long position, wxRichTextFragm
                 if (nextParagraph)
                     InsertChild(finalPara, nextParagraph);
                 else
                 if (nextParagraph)
                     InsertChild(finalPara, nextParagraph);
                 else

-                    AppendChild(finalPara);                
+                    AppendChild(finalPara);

             }
             else while (i)
             {
             }
             else while (i)
             {


@@ -991,7 +1093,7 @@ bool wxRichTextParagraphLayoutBox::InsertFragment(long position, wxRichTextFragm
                     InsertChild(finalPara, nextParagraph);
                 else
                     AppendChild(finalPara);
                     InsertChild(finalPara, nextParagraph);
                 else
                     AppendChild(finalPara);

-                
+

                 i = i->GetNext();
             }
 
                 i = i->GetNext();
             }
 


@@ -1003,7 +1105,7 @@ bool wxRichTextParagraphLayoutBox::InsertFragment(long position, wxRichTextFragm
                 // Ensure there's at least one object
                 if (finalPara->GetChildCount() == 0)
                 {
                 // Ensure there's at least one object
                 if (finalPara->GetChildCount() == 0)
                 {

-                    wxRichTextPlainText* text = new wxRichTextPlainText(wxT(""));
+                    wxRichTextPlainText* text = new wxRichTextPlainText(wxEmptyString);

                     text->SetAttributes(finalPara->GetAttributes());
 
                     finalPara->AppendChild(text);
                     text->SetAttributes(finalPara->GetAttributes());
 
                     finalPara->AppendChild(text);


@@ -1021,9 +1123,9 @@ bool wxRichTextParagraphLayoutBox::InsertFragment(long position, wxRichTextFragm
         {
             wxRichTextParagraph* para = wxDynamicCast(i->GetData(), wxRichTextParagraph);
             wxASSERT( para != NULL );
         {
             wxRichTextParagraph* para = wxDynamicCast(i->GetData(), wxRichTextParagraph);
             wxASSERT( para != NULL );

-            
+

             AppendChild(para->Clone());
             AppendChild(para->Clone());

-            
+

             i = i->GetNext();
         }
 
             i = i->GetNext();
         }
 


@@ -1046,7 +1148,7 @@ bool wxRichTextParagraphLayoutBox::CopyFragment(const wxRichTextRange& range, wx
         if (!para->GetRange().IsOutside(range))
         {
             fragment.AppendChild(para->Clone());
         if (!para->GetRange().IsOutside(range))
         {
             fragment.AppendChild(para->Clone());

-        }        
+        }

         i = i->GetNext();
     }
 
         i = i->GetNext();
     }
 


@@ -1123,20 +1225,21 @@ long wxRichTextParagraphLayoutBox::GetVisibleLineNumber(long pos, bool caretPosi
             while (node2)
             {
                 wxRichTextLine* line = node2->GetData();
             while (node2)
             {
                 wxRichTextLine* line = node2->GetData();

-                
-                if (line->GetRange().Contains(pos))
+                wxRichTextRange lineRange = line->GetAbsoluteRange();
+
+                if (lineRange.Contains(pos))

                 {
                     // If the caret is displayed at the end of the previous wrapped line,
                     // we want to return the line it's _displayed_ at (not the actual line
                     // containing the position).
                 {
                     // If the caret is displayed at the end of the previous wrapped line,
                     // we want to return the line it's _displayed_ at (not the actual line
                     // containing the position).

-                    if (line->GetRange().GetStart() == pos && !startOfLine && child->GetRange().GetStart() != pos)
+                    if (lineRange.GetStart() == pos && !startOfLine && child->GetRange().GetStart() != pos)

                         return lineCount - 1;
                     else
                         return lineCount;
                 }
 
                 lineCount ++;
                         return lineCount - 1;
                     else
                         return lineCount;
                 }
 
                 lineCount ++;

-                
+

                 node2 = node2->GetNext();
             }
             // If we didn't find it in the lines, it must be
                 node2 = node2->GetNext();
             }
             // If we didn't find it in the lines, it must be


@@ -1170,14 +1273,14 @@ wxRichTextLine* wxRichTextParagraphLayoutBox::GetLineForVisibleLineNumber(long l
             while (node2)
             {
                 wxRichTextLine* line = node2->GetData();
             while (node2)
             {
                 wxRichTextLine* line = node2->GetData();

-                
+

                 if (lineCount == lineNumber)
                     return line;
 
                 lineCount ++;
                 if (lineCount == lineNumber)
                     return line;
 
                 lineCount ++;

-                
+

                 node2 = node2->GetNext();
                 node2 = node2->GetNext();

-            }          
+            }

         }
         else
             lineCount += child->GetLines().GetCount();
         }
         else
             lineCount += child->GetLines().GetCount();


@@ -1193,14 +1296,14 @@ wxRichTextLine* wxRichTextParagraphLayoutBox::GetLineForVisibleLineNumber(long l
 bool wxRichTextParagraphLayoutBox::DeleteRange(const wxRichTextRange& range)
 {
     wxRichTextObjectList::compatibility_iterator node = m_children.GetFirst();
 bool wxRichTextParagraphLayoutBox::DeleteRange(const wxRichTextRange& range)
 {
     wxRichTextObjectList::compatibility_iterator node = m_children.GetFirst();

-    
+

     while (node)
     {
         wxRichTextParagraph* obj = wxDynamicCast(node->GetData(), wxRichTextParagraph);
         wxASSERT (obj != NULL);
 
         wxRichTextObjectList::compatibility_iterator next = node->GetNext();
     while (node)
     {
         wxRichTextParagraph* obj = wxDynamicCast(node->GetData(), wxRichTextParagraph);
         wxASSERT (obj != NULL);
 
         wxRichTextObjectList::compatibility_iterator next = node->GetNext();

-        
+

         // Delete the range in each paragraph
 
         if (!obj->GetRange().IsOutside(range))
         // Delete the range in each paragraph
 
         if (!obj->GetRange().IsOutside(range))


@@ -1249,7 +1352,7 @@ bool wxRichTextParagraphLayoutBox::DeleteRange(const wxRichTextRange& range)
                             }
 
                             wxRichTextObjectList::compatibility_iterator next1 = node1->GetNext();
                             }
 
                             wxRichTextObjectList::compatibility_iterator next1 = node1->GetNext();

-                            delete node1;
+                            nextParagraph->GetChildren().Erase(node1);

 
                             node1 = next1;
                         }
 
                             node1 = next1;
                         }


@@ -1258,14 +1361,14 @@ bool wxRichTextParagraphLayoutBox::DeleteRange(const wxRichTextRange& range)
                         RemoveChild(nextParagraph, true);
 
                     }
                         RemoveChild(nextParagraph, true);
 
                     }

-                }                
+                }

 
             }
         }
 
             }
         }

-        
+

         node = next;
     }
         node = next;
     }

-    
+

     return true;
 }
 
     return true;
 }
 


@@ -1284,9 +1387,9 @@ wxString wxRichTextParagraphLayoutBox::GetTextForRange(const wxRichTextRange& ra
                 text += wxT("\n");
             wxRichTextRange childRange = range;
             childRange.LimitTo(child->GetRange());
                 text += wxT("\n");
             wxRichTextRange childRange = range;
             childRange.LimitTo(child->GetRange());

-            
+

             wxString childText = child->GetTextForRange(childRange);
             wxString childText = child->GetTextForRange(childRange);

-            
+

             text += childText;
 
             lineCount ++;
             text += childText;
 
             lineCount ++;


@@ -1378,13 +1481,13 @@ wxRichTextObject* wxRichTextParagraphLayoutBox::GetLeafObjectAtPosition(long pos
     if (para)
     {
         wxRichTextObjectList::compatibility_iterator node = para->GetChildren().GetFirst();
     if (para)
     {
         wxRichTextObjectList::compatibility_iterator node = para->GetChildren().GetFirst();

-        
+

         while (node)
         {
             wxRichTextObject* child = node->GetData();
             if (child->GetRange().Contains(position))
                 return child;
         while (node)
         {
             wxRichTextObject* child = node->GetData();
             if (child->GetRange().Contains(position))
                 return child;

-            
+

             node = node->GetNext();
         }
         if (position == para->GetRange().GetEnd() && para->GetChildCount() > 0)
             node = node->GetNext();
         }
         if (position == para->GetRange().GetEnd() && para->GetChildCount() > 0)


@@ -1410,7 +1513,7 @@ bool wxRichTextParagraphLayoutBox::SetStyle(const wxRichTextRange& range, const
     bool haveControl = (GetRichTextCtrl() != NULL);
 
     wxRichTextAction* action = NULL;
     bool haveControl = (GetRichTextCtrl() != NULL);
 
     wxRichTextAction* action = NULL;

-    
+

     if (haveControl && withUndo)
     {
         action = new wxRichTextAction(NULL, _("Change Style"), wxRICHTEXT_CHANGE_STYLE, & GetRichTextCtrl()->GetBuffer(), GetRichTextCtrl());
     if (haveControl && withUndo)
     {
         action = new wxRichTextAction(NULL, _("Change Style"), wxRICHTEXT_CHANGE_STYLE, & GetRichTextCtrl()->GetBuffer(), GetRichTextCtrl());


@@ -1434,8 +1537,8 @@ bool wxRichTextParagraphLayoutBox::SetStyle(const wxRichTextRange& range, const
             {
                 // We'll be using a copy of the paragraph to make style changes,
                 // not updating the buffer directly.
             {
                 // We'll be using a copy of the paragraph to make style changes,
                 // not updating the buffer directly.

-                wxRichTextParagraph* newPara = NULL;
-                
+                wxRichTextParagraph* newPara wxDUMMY_INITIALIZE(NULL);
+

                 if (haveControl && withUndo)
                 {
                     newPara = new wxRichTextParagraph(*para);
                 if (haveControl && withUndo)
                 {
                     newPara = new wxRichTextParagraph(*para);


@@ -1454,24 +1557,24 @@ bool wxRichTextParagraphLayoutBox::SetStyle(const wxRichTextRange& range, const
                 {
                     wxRichTextRange childRange(range);
                     childRange.LimitTo(newPara->GetRange());
                 {
                     wxRichTextRange childRange(range);
                     childRange.LimitTo(newPara->GetRange());

-                    
+

                     // Find the starting position and if necessary split it so
                     // we can start applying a different style.
                     // TODO: check that the style actually changes or is different
                     // from style outside of range
                     // Find the starting position and if necessary split it so
                     // we can start applying a different style.
                     // TODO: check that the style actually changes or is different
                     // from style outside of range

-                    wxRichTextObject* firstObject = NULL;
-                    wxRichTextObject* lastObject = NULL;
-                    
+                    wxRichTextObject* firstObject wxDUMMY_INITIALIZE(NULL);
+                    wxRichTextObject* lastObject wxDUMMY_INITIALIZE(NULL);
+

                     if (childRange.GetStart() == newPara->GetRange().GetStart())
                         firstObject = newPara->GetChildren().GetFirst()->GetData();
                     else
                         firstObject = newPara->SplitAt(range.GetStart());
                     if (childRange.GetStart() == newPara->GetRange().GetStart())
                         firstObject = newPara->GetChildren().GetFirst()->GetData();
                     else
                         firstObject = newPara->SplitAt(range.GetStart());

-                    
+

                     // Increment by 1 because we're apply the style one _after_ the split point
                     long splitPoint = childRange.GetEnd();
                     if (splitPoint != newPara->GetRange().GetEnd())
                         splitPoint ++;
                     // Increment by 1 because we're apply the style one _after_ the split point
                     long splitPoint = childRange.GetEnd();
                     if (splitPoint != newPara->GetRange().GetEnd())
                         splitPoint ++;

-                    
+

                     // Find last object
                     if (splitPoint == newPara->GetRange().GetEnd() || splitPoint == (newPara->GetRange().GetEnd() - 1))
                         lastObject = newPara->GetChildren().GetLast()->GetData();
                     // Find last object
                     if (splitPoint == newPara->GetRange().GetEnd() || splitPoint == (newPara->GetRange().GetEnd() - 1))
                         lastObject = newPara->GetChildren().GetLast()->GetData();


@@ -1479,29 +1582,29 @@ bool wxRichTextParagraphLayoutBox::SetStyle(const wxRichTextRange& range, const
                         // lastObject is set as a side-effect of splitting. It's
                         // returned as the object before the new object.
                         (void) newPara->SplitAt(splitPoint, & lastObject);
                         // lastObject is set as a side-effect of splitting. It's
                         // returned as the object before the new object.
                         (void) newPara->SplitAt(splitPoint, & lastObject);

-                    
+

                     wxASSERT(firstObject != NULL);
                     wxASSERT(lastObject != NULL);
                     wxASSERT(firstObject != NULL);
                     wxASSERT(lastObject != NULL);

-                    
+

                     if (!firstObject || !lastObject)
                         continue;
                     if (!firstObject || !lastObject)
                         continue;

-                    
+

                     wxRichTextObjectList::compatibility_iterator firstNode = newPara->GetChildren().Find(firstObject);
                     wxRichTextObjectList::compatibility_iterator lastNode = newPara->GetChildren().Find(lastObject);
                     wxRichTextObjectList::compatibility_iterator firstNode = newPara->GetChildren().Find(firstObject);
                     wxRichTextObjectList::compatibility_iterator lastNode = newPara->GetChildren().Find(lastObject);

-                    
+

                     wxASSERT(firstNode != NULL);
                     wxASSERT(lastNode != NULL);
                     wxASSERT(firstNode != NULL);
                     wxASSERT(lastNode != NULL);

-                    
+

                     wxRichTextObjectList::compatibility_iterator node2 = firstNode;
                     wxRichTextObjectList::compatibility_iterator node2 = firstNode;

-                    
+

                     while (node2)
                     {
                         wxRichTextObject* child = node2->GetData();
                     while (node2)
                     {
                         wxRichTextObject* child = node2->GetData();

-                        
+

                         wxRichTextApplyStyle(child->GetAttributes(), style);
                         if (node2 == lastNode)
                             break;
                         wxRichTextApplyStyle(child->GetAttributes(), style);
                         if (node2 == lastNode)
                             break;

-                        
+

                         node2 = node2->GetNext();
                     }
                 }
                         node2 = node2->GetNext();
                     }
                 }


@@ -1528,11 +1631,13 @@ bool wxRichTextParagraphLayoutBox::SetStyle(const wxRichTextRange& range, const
 /// Get the text attributes for this position.
 bool wxRichTextParagraphLayoutBox::GetStyle(long position, wxTextAttrEx& style) const
 {
 /// Get the text attributes for this position.
 bool wxRichTextParagraphLayoutBox::GetStyle(long position, wxTextAttrEx& style) const
 {

-    wxRichTextObject* obj = NULL;
+    wxRichTextObject* obj wxDUMMY_INITIALIZE(NULL);
+

     if (style.IsParagraphStyle())
         obj = GetParagraphAtPosition(position);
     else
         obj = GetLeafObjectAtPosition(position);
     if (style.IsParagraphStyle())
         obj = GetParagraphAtPosition(position);
     else
         obj = GetLeafObjectAtPosition(position);

+

     if (obj)
     {
         style = obj->GetAttributes();
     if (obj)
     {
         style = obj->GetAttributes();


@@ -1545,11 +1650,13 @@ bool wxRichTextParagraphLayoutBox::GetStyle(long position, wxTextAttrEx& style)
 /// Get the text attributes for this position.
 bool wxRichTextParagraphLayoutBox::GetStyle(long position, wxRichTextAttr& style) const
 {
 /// Get the text attributes for this position.
 bool wxRichTextParagraphLayoutBox::GetStyle(long position, wxRichTextAttr& style) const
 {

-    wxRichTextObject* obj = NULL;
+    wxRichTextObject* obj wxDUMMY_INITIALIZE(NULL);
+

     if (style.IsParagraphStyle())
         obj = GetParagraphAtPosition(position);
     else
         obj = GetLeafObjectAtPosition(position);
     if (style.IsParagraphStyle())
         obj = GetParagraphAtPosition(position);
     else
         obj = GetLeafObjectAtPosition(position);

+

     if (obj)
     {
         style = obj->GetAttributes();
     if (obj)
     {
         style = obj->GetAttributes();


@@ -1668,7 +1775,48 @@ void wxRichTextParagraphLayoutBox::Reset()
 {
     Clear();
 
 {
     Clear();
 

-    AddParagraph(wxT(""));
+    AddParagraph(wxEmptyString);
+}
+
+/// Invalidate the buffer. With no argument, invalidates whole buffer.
+void wxRichTextParagraphLayoutBox::Invalidate(const wxRichTextRange& invalidRange)
+{
+    SetDirty(true);
+
+    if (invalidRange == wxRICHTEXT_ALL)
+    {
+        m_invalidRange = wxRICHTEXT_ALL;
+        return;
+    }
+
+    // Already invalidating everything
+    if (m_invalidRange == wxRICHTEXT_ALL)
+        return;
+
+    if ((invalidRange.GetStart() < m_invalidRange.GetStart()) || m_invalidRange.GetStart() == -1)
+        m_invalidRange.SetStart(invalidRange.GetStart());
+    if (invalidRange.GetEnd() > m_invalidRange.GetEnd())
+        m_invalidRange.SetEnd(invalidRange.GetEnd());
+}
+
+/// Get invalid range, rounding to entire paragraphs if argument is true.
+wxRichTextRange wxRichTextParagraphLayoutBox::GetInvalidRange(bool wholeParagraphs) const
+{
+    if (m_invalidRange == wxRICHTEXT_ALL || m_invalidRange == wxRICHTEXT_NONE)
+        return m_invalidRange;
+
+    wxRichTextRange range = m_invalidRange;
+
+    if (wholeParagraphs)
+    {
+        wxRichTextParagraph* para1 = GetParagraphAtPosition(range.GetStart());
+        wxRichTextParagraph* para2 = GetParagraphAtPosition(range.GetEnd());
+        if (para1)
+            range.SetStart(para1->GetRange().GetStart());
+        if (para2)
+            range.SetEnd(para2->GetRange().GetEnd());
+    }
+    return range;

 }
 
 /*!
 }
 
 /*!


@@ -1746,21 +1894,21 @@ bool wxRichTextParagraph::Draw(wxDC& dc, const wxRichTextRange& WXUNUSED(range),
             else
             {
                 wxString bulletText = GetBulletText();
             else
             {
                 wxString bulletText = GetBulletText();

-                if (!bulletText.IsEmpty())
+                if (!bulletText.empty())

                 {
                     if (GetAttributes().GetFont().Ok())
                         dc.SetFont(GetAttributes().GetFont());
                 {
                     if (GetAttributes().GetFont().Ok())
                         dc.SetFont(GetAttributes().GetFont());

-                    
+

                     if (GetAttributes().GetTextColour().Ok())
                         dc.SetTextForeground(GetAttributes().GetTextColour());
                     if (GetAttributes().GetTextColour().Ok())
                         dc.SetTextForeground(GetAttributes().GetTextColour());

-                    
+

                     dc.SetBackgroundMode(wxTRANSPARENT);
                     dc.SetBackgroundMode(wxTRANSPARENT);

-                    
+

                     // Get line height from first line, if any
                     wxRichTextLine* line = m_cachedLines.GetFirst() ? (wxRichTextLine* ) m_cachedLines.GetFirst()->GetData() : (wxRichTextLine*) NULL;
                     // Get line height from first line, if any
                     wxRichTextLine* line = m_cachedLines.GetFirst() ? (wxRichTextLine* ) m_cachedLines.GetFirst()->GetData() : (wxRichTextLine*) NULL;

-                    
+

                     wxPoint linePos;
                     wxPoint linePos;

-                    int lineHeight = 0;
+                    int lineHeight wxDUMMY_INITIALIZE(0);

                     if (line)
                     {
                         lineHeight = line->GetSize().y;
                     if (line)
                     {
                         lineHeight = line->GetSize().y;


@@ -1772,24 +1920,25 @@ bool wxRichTextParagraph::Draw(wxDC& dc, const wxRichTextRange& WXUNUSED(range),
                         linePos = GetPosition();
                         linePos.y += spaceBeforePara;
                     }
                         linePos = GetPosition();
                         linePos.y += spaceBeforePara;
                     }

-                    
+

                     int charHeight = dc.GetCharHeight();
                     int charHeight = dc.GetCharHeight();

-                    
+

                     int x = GetPosition().x + leftIndent;
                     int y = linePos.y + (lineHeight - charHeight);
                     int x = GetPosition().x + leftIndent;
                     int y = linePos.y + (lineHeight - charHeight);

-                    
+

                     dc.DrawText(bulletText, x, y);
                 }
             }
         }
     }
                     dc.DrawText(bulletText, x, y);
                 }
             }
         }
     }

-    
+

     // Draw the range for each line, one object at a time.
 
     wxRichTextLineList::compatibility_iterator node = m_cachedLines.GetFirst();
     while (node)
     {
         wxRichTextLine* line = node->GetData();
     // Draw the range for each line, one object at a time.
 
     wxRichTextLineList::compatibility_iterator node = m_cachedLines.GetFirst();
     while (node)
     {
         wxRichTextLine* line = node->GetData();

+        wxRichTextRange lineRange = line->GetAbsoluteRange();

 
         int maxDescent = line->GetDescent();
 
 
         int maxDescent = line->GetDescent();
 


@@ -1803,11 +1952,11 @@ bool wxRichTextParagraph::Draw(wxDC& dc, const wxRichTextRange& WXUNUSED(range),
         while (node2)
         {
             wxRichTextObject* child = node2->GetData();
         while (node2)
         {
             wxRichTextObject* child = node2->GetData();

-            if (!child->GetRange().IsOutside(line->GetRange()))
+            if (!child->GetRange().IsOutside(lineRange))

             {
                 // Draw this part of the line at the correct position
                 wxRichTextRange objectRange(child->GetRange());
             {
                 // Draw this part of the line at the correct position
                 wxRichTextRange objectRange(child->GetRange());

-                objectRange.LimitTo(line->GetRange());
+                objectRange.LimitTo(lineRange);

 
                 wxSize objectSize;
                 int descent = 0;
 
                 wxSize objectSize;
                 int descent = 0;


@@ -1819,7 +1968,7 @@ bool wxRichTextParagraph::Draw(wxDC& dc, const wxRichTextRange& WXUNUSED(range),
 
                 objectPosition.x += objectSize.x;
             }
 
                 objectPosition.x += objectSize.x;
             }

-            else if (child->GetRange().GetStart() > line->GetRange().GetEnd())
+            else if (child->GetRange().GetStart() > lineRange.GetEnd())

                 // Can break out of inner loop now since we've passed this line's range
                 break;
 
                 // Can break out of inner loop now since we've passed this line's range
                 break;
 


@@ -1827,7 +1976,7 @@ bool wxRichTextParagraph::Draw(wxDC& dc, const wxRichTextRange& WXUNUSED(range),
         }
 
         node = node->GetNext();
         }
 
         node = node->GetNext();

-    }    
+    }

 
     return true;
 }
 
     return true;
 }


@@ -1835,7 +1984,7 @@ bool wxRichTextParagraph::Draw(wxDC& dc, const wxRichTextRange& WXUNUSED(range),
 /// Lay the item out
 bool wxRichTextParagraph::Layout(wxDC& dc, const wxRect& rect, int style)
 {
 /// Lay the item out
 bool wxRichTextParagraph::Layout(wxDC& dc, const wxRect& rect, int style)
 {

-    ClearLines();
+    // ClearLines();

 
     // Increase the size of the paragraph due to spacing
     int spaceBeforePara = ConvertTenthsMMToPixels(dc, GetAttributes().GetParagraphSpacingBefore());
 
     // Increase the size of the paragraph due to spacing
     int spaceBeforePara = ConvertTenthsMMToPixels(dc, GetAttributes().GetParagraphSpacingBefore());


@@ -1943,7 +2092,7 @@ bool wxRichTextParagraph::Layout(wxDC& dc, const wxRect& rect, int style)
                 wrapPosition = wxMax(lastCompletedEndPos+1,child->GetRange().GetEnd());
 
             // wxLogDebug(wxT("Split at %ld"), wrapPosition);
                 wrapPosition = wxMax(lastCompletedEndPos+1,child->GetRange().GetEnd());
 
             // wxLogDebug(wxT("Split at %ld"), wrapPosition);

-            
+

             // Let's find the actual size of the current line now
             wxSize actualSize;
             wxRichTextRange actualRange(lastCompletedEndPos+1, wrapPosition);
             // Let's find the actual size of the current line now
             wxSize actualSize;
             wxRichTextRange actualRange(lastCompletedEndPos+1, wrapPosition);


@@ -1951,28 +2100,28 @@ bool wxRichTextParagraph::Layout(wxDC& dc, const wxRect& rect, int style)
             currentWidth = actualSize.x;
             lineHeight = wxMax(lineHeight, actualSize.y);
             maxDescent = wxMax(childDescent, maxDescent);
             currentWidth = actualSize.x;
             lineHeight = wxMax(lineHeight, actualSize.y);
             maxDescent = wxMax(childDescent, maxDescent);

-            
+

             // Add a new line
             // Add a new line

-            wxRichTextLine* line = new wxRichTextLine(this);            
-            line->SetRange(actualRange);
+            wxRichTextLine* line = AllocateLine(lineCount);
+
+            // Set relative range so we won't have to change line ranges when paragraphs are moved
+            line->SetRange(wxRichTextRange(actualRange.GetStart() - GetRange().GetStart(), actualRange.GetEnd() - GetRange().GetStart()));

             line->SetPosition(currentPosition);
             line->SetSize(wxSize(currentWidth, lineHeight));
             line->SetDescent(maxDescent);
 
             line->SetPosition(currentPosition);
             line->SetSize(wxSize(currentWidth, lineHeight));
             line->SetDescent(maxDescent);
 

-            m_cachedLines.Append(line);
-            

             // Now move down a line. TODO: add margins, spacing
             currentPosition.y += lineHeight;
             currentPosition.y += lineSpacing;
             currentWidth = 0;
             maxDescent = 0;
             // Now move down a line. TODO: add margins, spacing
             currentPosition.y += lineHeight;
             currentPosition.y += lineSpacing;
             currentWidth = 0;
             maxDescent = 0;

-            maxWidth = wxMax(maxWidth, currentWidth); 
-            
+            maxWidth = wxMax(maxWidth, currentWidth);
+

             lineCount ++;
 
             // TODO: account for zero-length objects, such as fields
             wxASSERT(wrapPosition > lastCompletedEndPos);
             lineCount ++;
 
             // TODO: account for zero-length objects, such as fields
             wxASSERT(wrapPosition > lastCompletedEndPos);

-            
+

             lastEndPos = wrapPosition;
             lastCompletedEndPos = lastEndPos;
 
             lastEndPos = wrapPosition;
             lastCompletedEndPos = lastEndPos;
 


@@ -2005,9 +2154,13 @@ bool wxRichTextParagraph::Layout(wxDC& dc, const wxRect& rect, int style)
     {
         currentPosition.x = (lineCount == 0 ? startPositionFirstLine : startPositionSubsequentLines);
 
     {
         currentPosition.x = (lineCount == 0 ? startPositionFirstLine : startPositionSubsequentLines);
 

-        wxRichTextLine* line = new wxRichTextLine(this);
-        
-        line->SetRange(lastCompletedEndPos+1, GetRange().GetEnd()-1);
+        wxRichTextLine* line = AllocateLine(lineCount);
+
+        wxRichTextRange actualRange(lastCompletedEndPos+1, GetRange().GetEnd()-1);
+
+        // Set relative range so we won't have to change line ranges when paragraphs are moved
+        line->SetRange(wxRichTextRange(actualRange.GetStart() - GetRange().GetStart(), actualRange.GetEnd() - GetRange().GetStart()));
+

         line->SetPosition(currentPosition);
 
         if (lineHeight == 0)
         line->SetPosition(currentPosition);
 
         if (lineHeight == 0)


@@ -2027,10 +2180,11 @@ bool wxRichTextParagraph::Layout(wxDC& dc, const wxRect& rect, int style)
         currentPosition.y += lineHeight;
         currentPosition.y += lineSpacing;
         lineCount ++;
         currentPosition.y += lineHeight;
         currentPosition.y += lineSpacing;
         lineCount ++;

-        
-        m_cachedLines.Append(line);

     }
 
     }
 

+    // Remove remaining unused line objects, if any
+    ClearUnusedLines(lineCount);
+

     // Apply styles to wrapped lines
     ApplyParagraphStyle(rect);
 
     // Apply styles to wrapped lines
     ApplyParagraphStyle(rect);
 


@@ -2075,7 +2229,7 @@ void wxRichTextParagraph::ApplyParagraphStyle(const wxRect& rect)
 bool wxRichTextParagraph::InsertText(long pos, const wxString& text)
 {
     wxRichTextObject* childToUse = NULL;
 bool wxRichTextParagraph::InsertText(long pos, const wxString& text)
 {
     wxRichTextObject* childToUse = NULL;

-    wxRichTextObjectList::compatibility_iterator nodeToUse = NULL;
+    wxRichTextObjectList::compatibility_iterator nodeToUse = wxRichTextObjectList::compatibility_iterator();

 
     wxRichTextObjectList::compatibility_iterator node = m_children.GetFirst();
     while (node)
 
     wxRichTextObjectList::compatibility_iterator node = m_children.GetFirst();
     while (node)


@@ -2116,7 +2270,7 @@ bool wxRichTextParagraph::InsertText(long pos, const wxString& text)
                 wxRichTextObject* child = node->GetData();
                 child->SetRange(wxRichTextRange(textObject->GetRange().GetStart() + textLength,
                                                  textObject->GetRange().GetEnd() + textLength));
                 wxRichTextObject* child = node->GetData();
                 child->SetRange(wxRichTextRange(textObject->GetRange().GetStart() + textLength,
                                                  textObject->GetRange().GetEnd() + textLength));

-                
+

                 node = node->GetNext();
             }
 
                 node = node->GetNext();
             }
 


@@ -2173,11 +2327,11 @@ bool wxRichTextParagraph::GetRangeSize(const wxRichTextRange& range, wxSize& siz
             if (!child->GetRange().IsOutside(range))
             {
                 wxSize childSize;
             if (!child->GetRange().IsOutside(range))
             {
                 wxSize childSize;

-                
+

                 wxRichTextRange rangeToUse = range;
                 rangeToUse.LimitTo(child->GetRange());
                 int childDescent = 0;
                 wxRichTextRange rangeToUse = range;
                 rangeToUse.LimitTo(child->GetRange());
                 int childDescent = 0;

-                
+

                 if (child->GetRangeSize(rangeToUse, childSize, childDescent, dc, flags))
                 {
                     sz.y = wxMax(sz.y, childSize.y);
                 if (child->GetRangeSize(rangeToUse, childSize, childDescent, dc, flags))
                 {
                     sz.y = wxMax(sz.y, childSize.y);


@@ -2206,20 +2360,21 @@ bool wxRichTextParagraph::GetRangeSize(const wxRichTextRange& range, wxSize& siz
         while (node)
         {
             wxRichTextLine* line = node->GetData();
         while (node)
         {
             wxRichTextLine* line = node->GetData();

-            if (!line->GetRange().IsOutside(range))
+            wxRichTextRange lineRange = line->GetAbsoluteRange();
+            if (!lineRange.IsOutside(range))

             {
                 wxSize lineSize;
             {
                 wxSize lineSize;

-                        
+

                 wxRichTextObjectList::compatibility_iterator node2 = m_children.GetFirst();
                 while (node2)
                 {
                     wxRichTextObject* child = node2->GetData();
                 wxRichTextObjectList::compatibility_iterator node2 = m_children.GetFirst();
                 while (node2)
                 {
                     wxRichTextObject* child = node2->GetData();

-                    
-                    if (!child->GetRange().IsOutside(line->GetRange()))
+
+                    if (!child->GetRange().IsOutside(lineRange))

                     {
                     {

-                        wxRichTextRange rangeToUse = line->GetRange();
+                        wxRichTextRange rangeToUse = lineRange;

                         rangeToUse.LimitTo(child->GetRange());
                         rangeToUse.LimitTo(child->GetRange());

-                        
+

                         wxSize childSize;
                         int childDescent = 0;
                         if (child->GetRangeSize(rangeToUse, childSize, childDescent, dc, flags))
                         wxSize childSize;
                         int childDescent = 0;
                         if (child->GetRangeSize(rangeToUse, childSize, childDescent, dc, flags))


@@ -2229,7 +2384,7 @@ bool wxRichTextParagraph::GetRangeSize(const wxRichTextRange& range, wxSize& siz
                         }
                         descent = wxMax(descent, childDescent);
                     }
                         }
                         descent = wxMax(descent, childDescent);
                     }

-                    
+

                     node2 = node2->GetNext();
                 }
 
                     node2 = node2->GetNext();
                 }
 


@@ -2296,12 +2451,13 @@ bool wxRichTextParagraph::FindPosition(wxDC& dc, long index, wxPoint& pt, int* h
     while (node)
     {
         wxRichTextLine* line = node->GetData();
     while (node)
     {
         wxRichTextLine* line = node->GetData();

-        if (index >= line->GetRange().GetStart() && index <= line->GetRange().GetEnd())
+        wxRichTextRange lineRange = line->GetAbsoluteRange();
+        if (index >= lineRange.GetStart() && index <= lineRange.GetEnd())

         {
             // If this is the last point in the line, and we're forcing the
             // returned value to be the start of the next line, do the required
             // thing.
         {
             // If this is the last point in the line, and we're forcing the
             // returned value to be the start of the next line, do the required
             // thing.

-            if (index == line->GetRange().GetEnd() && forceLineStart)
+            if (index == lineRange.GetEnd() && forceLineStart)

             {
                 if (node->GetNext())
                 {
             {
                 if (node->GetNext())
                 {


@@ -2314,7 +2470,7 @@ bool wxRichTextParagraph::FindPosition(wxDC& dc, long index, wxPoint& pt, int* h
 
             pt.y = line->GetPosition().y + GetPosition().y;
 
 
             pt.y = line->GetPosition().y + GetPosition().y;
 

-            wxRichTextRange r(line->GetRange().GetStart(), index);
+            wxRichTextRange r(lineRange.GetStart(), index);

             wxSize rangeSize;
             int descent = 0;
 
             wxSize rangeSize;
             int descent = 0;
 


@@ -2350,30 +2506,31 @@ int wxRichTextParagraph::HitTest(wxDC& dc, const wxPoint& pt, long& textPosition
         wxRichTextLine* line = node->GetData();
         wxPoint linePos = paraPos + line->GetPosition();
         wxSize lineSize = line->GetSize();
         wxRichTextLine* line = node->GetData();
         wxPoint linePos = paraPos + line->GetPosition();
         wxSize lineSize = line->GetSize();

+        wxRichTextRange lineRange = line->GetAbsoluteRange();

 
         if (pt.y >= linePos.y && pt.y <= linePos.y + lineSize.y)
         {
             if (pt.x < linePos.x)
             {
 
         if (pt.y >= linePos.y && pt.y <= linePos.y + lineSize.y)
         {
             if (pt.x < linePos.x)
             {

-                textPosition = line->GetRange().GetStart();
+                textPosition = lineRange.GetStart();

                 return wxRICHTEXT_HITTEST_BEFORE;
             }
             else if (pt.x >= (linePos.x + lineSize.x))
             {
                 return wxRICHTEXT_HITTEST_BEFORE;
             }
             else if (pt.x >= (linePos.x + lineSize.x))
             {

-                textPosition = line->GetRange().GetEnd();
+                textPosition = lineRange.GetEnd();

                 return wxRICHTEXT_HITTEST_AFTER;
             }
             else
             {
                 long i;
                 int lastX = linePos.x;
                 return wxRICHTEXT_HITTEST_AFTER;
             }
             else
             {
                 long i;
                 int lastX = linePos.x;

-                for (i = line->GetRange().GetStart(); i <= line->GetRange().GetEnd(); i++)
+                for (i = lineRange.GetStart(); i <= lineRange.GetEnd(); i++)

                 {
                     wxSize childSize;
                     int descent = 0;
                 {
                     wxSize childSize;
                     int descent = 0;

-                    
-                    wxRichTextRange rangeToUse(line->GetRange().GetStart(), i);
-                    
+
+                    wxRichTextRange rangeToUse(lineRange.GetStart(), i);
+

                     GetRangeSize(rangeToUse, childSize, descent, dc, wxRICHTEXT_UNFORMATTED);
 
                     int nextX = childSize.x + linePos.x;
                     GetRangeSize(rangeToUse, childSize, descent, dc, wxRICHTEXT_UNFORMATTED);
 
                     int nextX = childSize.x + linePos.x;


@@ -2399,7 +2556,7 @@ int wxRichTextParagraph::HitTest(wxDC& dc, const wxPoint& pt, long& textPosition
                 }
             }
         }
                 }
             }
         }

-        
+

         node = node->GetNext();
     }
 
         node = node->GetNext();
     }
 


@@ -2418,7 +2575,12 @@ wxRichTextObject* wxRichTextParagraph::SplitAt(long pos, wxRichTextObject** prev
         if (pos == child->GetRange().GetStart())
         {
             if (previousObject)
         if (pos == child->GetRange().GetStart())
         {
             if (previousObject)

-                *previousObject = child;
+            {
+                if (node->GetPrevious())
+                    *previousObject = node->GetPrevious()->GetData();
+                else
+                    *previousObject = NULL;
+            }

 
             return child;
         }
 
             return child;
         }


@@ -2478,7 +2640,7 @@ void wxRichTextParagraph::MoveToList(wxRichTextObject* obj, wxList& list)
 /// Add content back from list
 void wxRichTextParagraph::MoveFromList(wxList& list)
 {
 /// Add content back from list
 void wxRichTextParagraph::MoveFromList(wxList& list)
 {

-    for (wxNode* node = list.GetFirst(); node; node = node->GetNext())
+    for (wxList::compatibility_iterator node = list.GetFirst(); node; node = node->GetNext())

     {
         AppendChild((wxRichTextObject*) node->GetData());
     }
     {
         AppendChild((wxRichTextObject*) node->GetData());
     }


@@ -2504,7 +2666,7 @@ wxRichTextObject* wxRichTextParagraph::FindObjectAtPosition(long position)
         wxRichTextObject* obj = node->GetData();
         if (obj->GetRange().Contains(position))
             return obj;
         wxRichTextObject* obj = node->GetData();
         if (obj->GetRange().Contains(position))
             return obj;

-        
+

         node = node->GetNext();
     }
     return NULL;
         node = node->GetNext();
     }
     return NULL;


@@ -2667,6 +2829,40 @@ wxString wxRichTextParagraph::GetBulletText()
     return text;
 }
 
     return text;
 }
 

+/// Allocate or reuse a line object
+wxRichTextLine* wxRichTextParagraph::AllocateLine(int pos)
+{
+    if (pos < (int) m_cachedLines.GetCount())
+    {
+        wxRichTextLine* line = m_cachedLines.Item(pos)->GetData();
+        line->Init(this);
+        return line;
+    }
+    else
+    {
+        wxRichTextLine* line = new wxRichTextLine(this);
+        m_cachedLines.Append(line);
+        return line;
+    }
+}
+
+/// Clear remaining unused line objects, if any
+bool wxRichTextParagraph::ClearUnusedLines(int lineCount)
+{
+    int cachedLineCount = m_cachedLines.GetCount();
+    if ((int) cachedLineCount > lineCount)
+    {
+        for (int i = 0; i < (int) (cachedLineCount - lineCount); i ++)
+        {
+            wxRichTextLineList::compatibility_iterator node = m_cachedLines.GetLast();
+            wxRichTextLine* line = node->GetData();
+            m_cachedLines.Erase(node);
+            delete line;
+        }
+    }
+    return true;
+}
+

 
 /*!
  * wxRichTextLine
 
 /*!
  * wxRichTextLine


@@ -2677,15 +2873,16 @@ wxString wxRichTextParagraph::GetBulletText()
 
 wxRichTextLine::wxRichTextLine(wxRichTextParagraph* parent)
 {
 
 wxRichTextLine::wxRichTextLine(wxRichTextParagraph* parent)
 {

-    Init();
-
-    m_parent = parent;
+    Init(parent);

 }
 
 /// Initialisation
 }
 
 /// Initialisation

-void wxRichTextLine::Init()
+void wxRichTextLine::Init(wxRichTextParagraph* parent)

 {
 {

-    m_parent = NULL;
+    m_parent = parent;
+    m_range.SetRange(-1, -1);
+    m_pos = wxPoint(0, 0);
+    m_size = wxSize(0, 0);

     m_descent = 0;
 }
 
     m_descent = 0;
 }
 


@@ -2701,6 +2898,14 @@ wxPoint wxRichTextLine::GetAbsolutePosition() const
     return m_parent->GetPosition() + m_pos;
 }
 
     return m_parent->GetPosition() + m_pos;
 }
 

+/// Get the absolute range
+wxRichTextRange wxRichTextLine::GetAbsoluteRange() const
+{
+    wxRichTextRange range(m_range.GetStart() + m_parent->GetRange().GetStart(), 0);
+    range.SetEnd(range.GetStart() + m_range.GetLength()-1);
+    return range;
+}
+

 /*!
  * wxRichTextPlainText
  * This object represents a single piece of text.
 /*!
  * wxRichTextPlainText
  * This object represents a single piece of text.


@@ -2766,7 +2971,7 @@ bool wxRichTextPlainText::Draw(wxDC& dc, const wxRichTextRange& range, const wxR
         // Let's draw unselected chunk, selected chunk, then unselected chunk.
 
         dc.SetBackgroundMode(wxTRANSPARENT);
         // Let's draw unselected chunk, selected chunk, then unselected chunk.
 
         dc.SetBackgroundMode(wxTRANSPARENT);

-    
+

         // 1. Initial unselected chunk, if any, up until start of selection.
         if (selectionRange.GetStart() > range.GetStart() && selectionRange.GetStart() <= range.GetEnd())
         {
         // 1. Initial unselected chunk, if any, up until start of selection.
         if (selectionRange.GetStart() > range.GetStart() && selectionRange.GetStart() <= range.GetEnd())
         {


@@ -2822,7 +3027,7 @@ bool wxRichTextPlainText::Draw(wxDC& dc, const wxRichTextRange& range, const wxR
 
             dc.SetTextForeground(GetAttributes().GetTextColour());
             dc.DrawText(stringFragment, x, y);
 
             dc.SetTextForeground(GetAttributes().GetTextColour());
             dc.DrawText(stringFragment, x, y);

-        }        
+        }

     }
 
     return true;
     }
 
     return true;


@@ -2939,7 +3144,7 @@ wxString wxRichTextPlainText::GetTextForRange(const wxRichTextRange& range) cons
 bool wxRichTextPlainText::CanMerge(wxRichTextObject* object) const
 {
     return object->GetClassInfo() == CLASSINFO(wxRichTextPlainText) &&
 bool wxRichTextPlainText::CanMerge(wxRichTextObject* object) const
 {
     return object->GetClassInfo() == CLASSINFO(wxRichTextPlainText) &&

-        (m_text.IsEmpty() || wxTextAttrEq(GetAttributes(), object->GetAttributes()));
+        (m_text.empty() || wxTextAttrEq(GetAttributes(), object->GetAttributes()));

 }
 
 /// Returns true if this object merged itself with the given one.
 }
 
 /// Returns true if this object merged itself with the given one.


@@ -2999,14 +3204,16 @@ void wxRichTextBuffer::Clear()
     DeleteChildren();
     GetCommandProcessor()->ClearCommands();
     Modify(false);
     DeleteChildren();
     GetCommandProcessor()->ClearCommands();
     Modify(false);

+    Invalidate(wxRICHTEXT_ALL);

 }
 
 void wxRichTextBuffer::Reset()
 {
     DeleteChildren();
 }
 
 void wxRichTextBuffer::Reset()
 {
     DeleteChildren();

-    AddParagraph(wxT(""));
+    AddParagraph(wxEmptyString);

     GetCommandProcessor()->ClearCommands();
     Modify(false);
     GetCommandProcessor()->ClearCommands();
     Modify(false);

+    Invalidate(wxRICHTEXT_ALL);

 }
 
 /// Submit command to insert the given text
 }
 
 /// Submit command to insert the given text


@@ -3022,9 +3229,9 @@ bool wxRichTextBuffer::InsertTextWithUndo(long pos, const wxString& text, wxRich
 
     // Set the range we'll need to delete in Undo
     action->SetRange(wxRichTextRange(pos, pos + text.Length() - 1));
 
     // Set the range we'll need to delete in Undo
     action->SetRange(wxRichTextRange(pos, pos + text.Length() - 1));

-    
+

     SubmitAction(action);
     SubmitAction(action);

-        
+

     return true;
 }
 
     return true;
 }
 


@@ -3035,8 +3242,8 @@ bool wxRichTextBuffer::InsertNewlineWithUndo(long pos, wxRichTextCtrl* ctrl)
 
     wxTextAttrEx attr(GetBasicStyle());
     wxRichTextApplyStyle(attr, GetDefaultStyle());
 
     wxTextAttrEx attr(GetBasicStyle());
     wxRichTextApplyStyle(attr, GetDefaultStyle());

-    
-    wxRichTextParagraph* newPara = new wxRichTextParagraph(wxT(""), this, & attr);
+
+    wxRichTextParagraph* newPara = new wxRichTextParagraph(wxEmptyString, this, & attr);

     action->GetNewParagraphs().AppendChild(newPara);
     action->GetNewParagraphs().UpdateRanges();
     action->GetNewParagraphs().SetPartialParagraph(false);
     action->GetNewParagraphs().AppendChild(newPara);
     action->GetNewParagraphs().UpdateRanges();
     action->GetNewParagraphs().SetPartialParagraph(false);


@@ -3044,9 +3251,9 @@ bool wxRichTextBuffer::InsertNewlineWithUndo(long pos, wxRichTextCtrl* ctrl)
 
     // Set the range we'll need to delete in Undo
     action->SetRange(wxRichTextRange(pos, pos));
 
     // Set the range we'll need to delete in Undo
     action->SetRange(wxRichTextRange(pos, pos));

-    
+

     SubmitAction(action);
     SubmitAction(action);

-        
+

     return true;
 }
 
     return true;
 }
 


@@ -3057,7 +3264,7 @@ bool wxRichTextBuffer::InsertImageWithUndo(long pos, const wxRichTextImageBlock&
 
     wxTextAttrEx attr(GetBasicStyle());
     wxRichTextApplyStyle(attr, GetDefaultStyle());
 
     wxTextAttrEx attr(GetBasicStyle());
     wxRichTextApplyStyle(attr, GetDefaultStyle());

-    
+

     wxRichTextParagraph* newPara = new wxRichTextParagraph(this, & attr);
     wxRichTextImage* imageObject = new wxRichTextImage(imageBlock, newPara);
     newPara->AppendChild(imageObject);
     wxRichTextParagraph* newPara = new wxRichTextParagraph(this, & attr);
     wxRichTextImage* imageObject = new wxRichTextImage(imageBlock, newPara);
     newPara->AppendChild(imageObject);


@@ -3070,9 +3277,9 @@ bool wxRichTextBuffer::InsertImageWithUndo(long pos, const wxRichTextImageBlock&
 
     // Set the range we'll need to delete in Undo
     action->SetRange(wxRichTextRange(pos, pos));
 
     // Set the range we'll need to delete in Undo
     action->SetRange(wxRichTextRange(pos, pos));

-    
+

     SubmitAction(action);
     SubmitAction(action);

-        
+

     return true;
 }
 
     return true;
 }
 


@@ -3080,12 +3287,12 @@ bool wxRichTextBuffer::InsertImageWithUndo(long pos, const wxRichTextImageBlock&
 bool wxRichTextBuffer::DeleteRangeWithUndo(const wxRichTextRange& range, long initialCaretPosition, long WXUNUSED(newCaretPositon), wxRichTextCtrl* ctrl)
 {
     wxRichTextAction* action = new wxRichTextAction(NULL, _("Delete"), wxRICHTEXT_DELETE, this, ctrl);
 bool wxRichTextBuffer::DeleteRangeWithUndo(const wxRichTextRange& range, long initialCaretPosition, long WXUNUSED(newCaretPositon), wxRichTextCtrl* ctrl)
 {
     wxRichTextAction* action = new wxRichTextAction(NULL, _("Delete"), wxRICHTEXT_DELETE, this, ctrl);

-    
+

     action->SetPosition(initialCaretPosition);
 
     // Set the range to delete
     action->SetRange(range);
     action->SetPosition(initialCaretPosition);
 
     // Set the range to delete
     action->SetRange(range);

-    
+

     // Copy the fragment that we'll need to restore in Undo
     CopyFragment(range, action->GetOldParagraphs());
 
     // Copy the fragment that we'll need to restore in Undo
     CopyFragment(range, action->GetOldParagraphs());
 


@@ -3110,7 +3317,7 @@ bool wxRichTextBuffer::DeleteRangeWithUndo(const wxRichTextRange& range, long in
     }
 
     SubmitAction(action);
     }
 
     SubmitAction(action);

-        
+

     return true;
 }
 
     return true;
 }
 


@@ -3127,7 +3334,7 @@ bool wxRichTextBuffer::BeginBatchUndo(const wxString& cmdName)
         m_batchedCommand = new wxRichTextCommand(cmdName);
     }
 
         m_batchedCommand = new wxRichTextCommand(cmdName);
     }
 

-    m_batchedCommandDepth ++;    
+    m_batchedCommandDepth ++;

 
     return true;
 }
 
     return true;
 }


@@ -3169,7 +3376,7 @@ bool wxRichTextBuffer::SubmitAction(wxRichTextAction* action)
 /// Begin suppressing undo/redo commands.
 bool wxRichTextBuffer::BeginSuppressUndo()
 {
 /// Begin suppressing undo/redo commands.
 bool wxRichTextBuffer::BeginSuppressUndo()
 {

-    m_suppressUndo ++;    
+    m_suppressUndo ++;

 
     return true;
 }
 
     return true;
 }


@@ -3177,7 +3384,7 @@ bool wxRichTextBuffer::BeginSuppressUndo()
 /// End suppressing undo/redo commands.
 bool wxRichTextBuffer::EndSuppressUndo()
 {
 /// End suppressing undo/redo commands.
 bool wxRichTextBuffer::EndSuppressUndo()
 {

-    m_suppressUndo --;    
+    m_suppressUndo --;

 
     return true;
 }
 
     return true;
 }


@@ -3209,9 +3416,9 @@ bool wxRichTextBuffer::EndStyle()
         return false;
     }
 
         return false;
     }
 

-    wxNode* node = m_attributeStack.GetLast();
+    wxList::compatibility_iterator node = m_attributeStack.GetLast();

     wxTextAttrEx* attr = (wxTextAttrEx*)node->GetData();
     wxTextAttrEx* attr = (wxTextAttrEx*)node->GetData();

-    delete node;
+    m_attributeStack.Erase(node);

 
     SetDefaultStyle(*attr);
 
 
     SetDefaultStyle(*attr);
 


@@ -3230,7 +3437,7 @@ bool wxRichTextBuffer::EndAllStyles()
 /// Clear the style stack
 void wxRichTextBuffer::ClearStyleStack()
 {
 /// Clear the style stack
 void wxRichTextBuffer::ClearStyleStack()
 {

-    for (wxNode* node = m_attributeStack.GetFirst(); node; node = node->GetNext())
+    for (wxList::compatibility_iterator node = m_attributeStack.GetFirst(); node; node = node->GetNext())

         delete (wxTextAttrEx*) node->GetData();
     m_attributeStack.Clear();
 }
         delete (wxTextAttrEx*) node->GetData();
     m_attributeStack.Clear();
 }


@@ -3243,7 +3450,7 @@ bool wxRichTextBuffer::BeginBold()
 
     wxTextAttrEx attr;
     attr.SetFont(font,wxTEXT_ATTR_FONT_WEIGHT);
 
     wxTextAttrEx attr;
     attr.SetFont(font,wxTEXT_ATTR_FONT_WEIGHT);

-    
+

     return BeginStyle(attr);
 }
 
     return BeginStyle(attr);
 }
 


@@ -3255,7 +3462,7 @@ bool wxRichTextBuffer::BeginItalic()
 
     wxTextAttrEx attr;
     attr.SetFont(font, wxTEXT_ATTR_FONT_ITALIC);
 
     wxTextAttrEx attr;
     attr.SetFont(font, wxTEXT_ATTR_FONT_ITALIC);

-    
+

     return BeginStyle(attr);
 }
 
     return BeginStyle(attr);
 }
 


@@ -3267,7 +3474,7 @@ bool wxRichTextBuffer::BeginUnderline()
 
     wxTextAttrEx attr;
     attr.SetFont(font, wxTEXT_ATTR_FONT_UNDERLINE);
 
     wxTextAttrEx attr;
     attr.SetFont(font, wxTEXT_ATTR_FONT_UNDERLINE);

-    
+

     return BeginStyle(attr);
 }
 
     return BeginStyle(attr);
 }
 


@@ -3279,7 +3486,7 @@ bool wxRichTextBuffer::BeginFontSize(int pointSize)
 
     wxTextAttrEx attr;
     attr.SetFont(font, wxTEXT_ATTR_FONT_SIZE);
 
     wxTextAttrEx attr;
     attr.SetFont(font, wxTEXT_ATTR_FONT_SIZE);

-    
+

     return BeginStyle(attr);
 }
 
     return BeginStyle(attr);
 }
 


@@ -3289,7 +3496,7 @@ bool wxRichTextBuffer::BeginFont(const wxFont& font)
     wxTextAttrEx attr;
     attr.SetFlags(wxTEXT_ATTR_FONT);
     attr.SetFont(font);
     wxTextAttrEx attr;
     attr.SetFlags(wxTEXT_ATTR_FONT);
     attr.SetFont(font);

-    
+

     return BeginStyle(attr);
 }
 
     return BeginStyle(attr);
 }
 


@@ -3299,7 +3506,7 @@ bool wxRichTextBuffer::BeginTextColour(const wxColour& colour)
     wxTextAttrEx attr;
     attr.SetFlags(wxTEXT_ATTR_TEXT_COLOUR);
     attr.SetTextColour(colour);
     wxTextAttrEx attr;
     attr.SetFlags(wxTEXT_ATTR_TEXT_COLOUR);
     attr.SetTextColour(colour);

-    
+

     return BeginStyle(attr);
 }
 
     return BeginStyle(attr);
 }
 


@@ -3309,7 +3516,7 @@ bool wxRichTextBuffer::BeginAlignment(wxTextAttrAlignment alignment)
     wxTextAttrEx attr;
     attr.SetFlags(wxTEXT_ATTR_ALIGNMENT);
     attr.SetAlignment(alignment);
     wxTextAttrEx attr;
     attr.SetFlags(wxTEXT_ATTR_ALIGNMENT);
     attr.SetAlignment(alignment);

-    
+

     return BeginStyle(attr);
 }
 
     return BeginStyle(attr);
 }
 


@@ -3319,7 +3526,7 @@ bool wxRichTextBuffer::BeginLeftIndent(int leftIndent, int leftSubIndent)
     wxTextAttrEx attr;
     attr.SetFlags(wxTEXT_ATTR_LEFT_INDENT);
     attr.SetLeftIndent(leftIndent, leftSubIndent);
     wxTextAttrEx attr;
     attr.SetFlags(wxTEXT_ATTR_LEFT_INDENT);
     attr.SetLeftIndent(leftIndent, leftSubIndent);

-    
+

     return BeginStyle(attr);
 }
 
     return BeginStyle(attr);
 }
 


@@ -3329,7 +3536,7 @@ bool wxRichTextBuffer::BeginRightIndent(int rightIndent)
     wxTextAttrEx attr;
     attr.SetFlags(wxTEXT_ATTR_RIGHT_INDENT);
     attr.SetRightIndent(rightIndent);
     wxTextAttrEx attr;
     attr.SetFlags(wxTEXT_ATTR_RIGHT_INDENT);
     attr.SetRightIndent(rightIndent);

-    
+

     return BeginStyle(attr);
 }
 
     return BeginStyle(attr);
 }
 


@@ -3346,7 +3553,7 @@ bool wxRichTextBuffer::BeginParagraphSpacing(int before, int after)
     attr.SetFlags(flags);
     attr.SetParagraphSpacingBefore(before);
     attr.SetParagraphSpacingAfter(after);
     attr.SetFlags(flags);
     attr.SetParagraphSpacingBefore(before);
     attr.SetParagraphSpacingAfter(after);

-    
+

     return BeginStyle(attr);
 }
 
     return BeginStyle(attr);
 }
 


@@ -3356,7 +3563,7 @@ bool wxRichTextBuffer::BeginLineSpacing(int lineSpacing)
     wxTextAttrEx attr;
     attr.SetFlags(wxTEXT_ATTR_LINE_SPACING);
     attr.SetLineSpacing(lineSpacing);
     wxTextAttrEx attr;
     attr.SetFlags(wxTEXT_ATTR_LINE_SPACING);
     attr.SetLineSpacing(lineSpacing);

-    
+

     return BeginStyle(attr);
 }
 
     return BeginStyle(attr);
 }
 


@@ -3368,7 +3575,7 @@ bool wxRichTextBuffer::BeginNumberedBullet(int bulletNumber, int leftIndent, int
     attr.SetBulletStyle(bulletStyle);
     attr.SetBulletNumber(bulletNumber);
     attr.SetLeftIndent(leftIndent, leftSubIndent);
     attr.SetBulletStyle(bulletStyle);
     attr.SetBulletNumber(bulletNumber);
     attr.SetLeftIndent(leftIndent, leftSubIndent);

-    
+

     return BeginStyle(attr);
 }
 
     return BeginStyle(attr);
 }
 


@@ -3380,7 +3587,7 @@ bool wxRichTextBuffer::BeginSymbolBullet(wxChar symbol, int leftIndent, int left
     attr.SetBulletStyle(bulletStyle);
     attr.SetLeftIndent(leftIndent, leftSubIndent);
     attr.SetBulletSymbol(symbol);
     attr.SetBulletStyle(bulletStyle);
     attr.SetLeftIndent(leftIndent, leftSubIndent);
     attr.SetBulletSymbol(symbol);

-    
+

     return BeginStyle(attr);
 }
 
     return BeginStyle(attr);
 }
 


@@ -3518,8 +3725,11 @@ void wxRichTextBuffer::CleanUpHandlers()
     sm_handlers.Clear();
 }
 
     sm_handlers.Clear();
 }
 

-wxString wxRichTextBuffer::GetExtWildcard(bool combine, bool save)
+wxString wxRichTextBuffer::GetExtWildcard(bool combine, bool save, wxArrayInt* types)

 {
 {

+    if (types)
+        types->Clear();
+

     wxString wildcard;
 
     wxList::compatibility_iterator node = GetHandlers().GetFirst();
     wxString wildcard;
 
     wxList::compatibility_iterator node = GetHandlers().GetFirst();


@@ -3546,6 +3756,8 @@ wxString wxRichTextBuffer::GetExtWildcard(bool combine, bool save)
                 wildcard += handler->GetExtension();
                 wildcard += wxT(")|*.");
                 wildcard += handler->GetExtension();
                 wildcard += handler->GetExtension();
                 wildcard += wxT(")|*.");
                 wildcard += handler->GetExtension();

+                if (types)
+                    types->Add(handler->GetType());

             }
             count ++;
         }
             }
             count ++;
         }


@@ -3563,7 +3775,13 @@ bool wxRichTextBuffer::LoadFile(const wxString& filename, int type)
 {
     wxRichTextFileHandler* handler = FindHandlerFilenameOrType(filename, type);
     if (handler)
 {
     wxRichTextFileHandler* handler = FindHandlerFilenameOrType(filename, type);
     if (handler)

-        return handler->LoadFile(this, filename);
+    {
+        SetDefaultStyle(wxTextAttrEx());
+
+        bool success = handler->LoadFile(this, filename);
+        Invalidate(wxRICHTEXT_ALL);
+        return success;
+    }

     else
         return false;
 }
     else
         return false;
 }


@@ -3583,7 +3801,12 @@ bool wxRichTextBuffer::LoadFile(wxInputStream& stream, int type)
 {
     wxRichTextFileHandler* handler = FindHandler(type);
     if (handler)
 {
     wxRichTextFileHandler* handler = FindHandler(type);
     if (handler)

-        return handler->LoadFile(this, stream);
+    {
+        SetDefaultStyle(wxTextAttrEx());
+        bool success = handler->LoadFile(this, stream);
+        Invalidate(wxRICHTEXT_ALL);
+        return success;
+    }

     else
         return false;
 }
     else
         return false;
 }


@@ -3602,12 +3825,16 @@ bool wxRichTextBuffer::SaveFile(wxOutputStream& stream, int type)
 bool wxRichTextBuffer::CopyToClipboard(const wxRichTextRange& range)
 {
     bool success = false;
 bool wxRichTextBuffer::CopyToClipboard(const wxRichTextRange& range)
 {
     bool success = false;

+#if wxUSE_CLIPBOARD && wxUSE_DATAOBJ

     wxString text = GetTextForRange(range);
     wxString text = GetTextForRange(range);

-    if (wxTheClipboard->Open())
-    {        
+    if (!wxTheClipboard->IsOpened() && wxTheClipboard->Open())
+    {

         success = wxTheClipboard->SetData(new wxTextDataObject(text));
         wxTheClipboard->Close();
     }
         success = wxTheClipboard->SetData(new wxTextDataObject(text));
         wxTheClipboard->Close();
     }

+#else
+    wxUnusedVar(range);
+#endif

     return success;
 }
 
     return success;
 }
 


@@ -3615,6 +3842,7 @@ bool wxRichTextBuffer::CopyToClipboard(const wxRichTextRange& range)
 bool wxRichTextBuffer::PasteFromClipboard(long position)
 {
     bool success = false;
 bool wxRichTextBuffer::PasteFromClipboard(long position)
 {
     bool success = false;

+#if wxUSE_CLIPBOARD && wxUSE_DATAOBJ

     if (CanPasteFromClipboard())
     {
         if (wxTheClipboard->Open())
     if (CanPasteFromClipboard())
     {
         if (wxTheClipboard->Open())


@@ -3626,7 +3854,7 @@ bool wxRichTextBuffer::PasteFromClipboard(long position)
                 wxString text(data.GetText());
 
                 InsertTextWithUndo(position+1, text, GetRichTextCtrl());
                 wxString text(data.GetText());
 
                 InsertTextWithUndo(position+1, text, GetRichTextCtrl());

-                
+

                 success = true;
             }
             else if (wxTheClipboard->IsSupported(wxDF_BITMAP))
                 success = true;
             }
             else if (wxTheClipboard->IsSupported(wxDF_BITMAP))


@@ -3637,17 +3865,17 @@ bool wxRichTextBuffer::PasteFromClipboard(long position)
                 wxImage image(bitmap.ConvertToImage());
 
                 wxRichTextAction* action = new wxRichTextAction(NULL, _("Insert Image"), wxRICHTEXT_INSERT, this, GetRichTextCtrl(), false);
                 wxImage image(bitmap.ConvertToImage());
 
                 wxRichTextAction* action = new wxRichTextAction(NULL, _("Insert Image"), wxRICHTEXT_INSERT, this, GetRichTextCtrl(), false);

-                
+

                 action->GetNewParagraphs().AddImage(image);
 
                 if (action->GetNewParagraphs().GetChildCount() == 1)
                     action->GetNewParagraphs().SetPartialParagraph(true);
                 action->GetNewParagraphs().AddImage(image);
 
                 if (action->GetNewParagraphs().GetChildCount() == 1)
                     action->GetNewParagraphs().SetPartialParagraph(true);

-                
+

                 action->SetPosition(position);
                 action->SetPosition(position);

-                
+

                 // Set the range we'll need to delete in Undo
                 action->SetRange(wxRichTextRange(position, position));
                 // Set the range we'll need to delete in Undo
                 action->SetRange(wxRichTextRange(position, position));

-                
+

                 SubmitAction(action);
 
                 success = true;
                 SubmitAction(action);
 
                 success = true;


@@ -3655,21 +3883,26 @@ bool wxRichTextBuffer::PasteFromClipboard(long position)
             wxTheClipboard->Close();
         }
     }
             wxTheClipboard->Close();
         }
     }

+#else
+    wxUnusedVar(position);
+#endif

     return success;
 }
 
 /// Can we paste from the clipboard?
 bool wxRichTextBuffer::CanPasteFromClipboard() const
 {
     return success;
 }
 
 /// Can we paste from the clipboard?
 bool wxRichTextBuffer::CanPasteFromClipboard() const
 {

-    bool canPaste = FALSE;
-    if (wxTheClipboard->Open())
+    bool canPaste = false;
+#if wxUSE_CLIPBOARD && wxUSE_DATAOBJ
+    if (!wxTheClipboard->IsOpened() && wxTheClipboard->Open())

     {
         if (wxTheClipboard->IsSupported(wxDF_TEXT) || wxTheClipboard->IsSupported(wxDF_BITMAP))
         {
     {
         if (wxTheClipboard->IsSupported(wxDF_TEXT) || wxTheClipboard->IsSupported(wxDF_BITMAP))
         {

-            canPaste = TRUE;
+            canPaste = true;

         }
         wxTheClipboard->Close();
     }
         }
         wxTheClipboard->Close();
     }

+#endif

     return canPaste;
 }
 
     return canPaste;
 }
 


@@ -3709,12 +3942,12 @@ IMPLEMENT_DYNAMIC_CLASS(wxRichTextModule, wxModule)
  */
 
 wxRichTextCommand::wxRichTextCommand(const wxString& name, wxRichTextCommandId id, wxRichTextBuffer* buffer,
  */
 
 wxRichTextCommand::wxRichTextCommand(const wxString& name, wxRichTextCommandId id, wxRichTextBuffer* buffer,

-                                     wxRichTextCtrl* ctrl, bool ignoreFirstTime): wxCommand(TRUE, name)
+                                     wxRichTextCtrl* ctrl, bool ignoreFirstTime): wxCommand(true, name)

 {
     /* wxRichTextAction* action = */ new wxRichTextAction(this, name, id, buffer, ctrl, ignoreFirstTime);
 }
 
 {
     /* wxRichTextAction* action = */ new wxRichTextAction(this, name, id, buffer, ctrl, ignoreFirstTime);
 }
 

-wxRichTextCommand::wxRichTextCommand(const wxString& name): wxCommand(TRUE, name)
+wxRichTextCommand::wxRichTextCommand(const wxString& name): wxCommand(true, name)

 {
 }
 
 {
 }
 


@@ -3731,7 +3964,7 @@ void wxRichTextCommand::AddAction(wxRichTextAction* action)
 
 bool wxRichTextCommand::Do()
 {
 
 bool wxRichTextCommand::Do()
 {

-    for (wxNode* node = m_actions.GetFirst(); node; node = node->GetNext())
+    for (wxList::compatibility_iterator node = m_actions.GetFirst(); node; node = node->GetNext())

     {
         wxRichTextAction* action = (wxRichTextAction*) node->GetData();
         action->Do();
     {
         wxRichTextAction* action = (wxRichTextAction*) node->GetData();
         action->Do();


@@ -3742,7 +3975,7 @@ bool wxRichTextCommand::Do()
 
 bool wxRichTextCommand::Undo()
 {
 
 bool wxRichTextCommand::Undo()
 {

-    for (wxNode* node = m_actions.GetLast(); node; node = node->GetPrevious())
+    for (wxList::compatibility_iterator node = m_actions.GetLast(); node; node = node->GetPrevious())

     {
         wxRichTextAction* action = (wxRichTextAction*) node->GetData();
         action->Undo();
     {
         wxRichTextAction* action = (wxRichTextAction*) node->GetData();
         action->Undo();


@@ -3790,6 +4023,7 @@ bool wxRichTextAction::Do()
         {
             m_buffer->InsertFragment(GetPosition(), m_newParagraphs);
             m_buffer->UpdateRanges();
         {
             m_buffer->InsertFragment(GetPosition(), m_newParagraphs);
             m_buffer->UpdateRanges();

+            m_buffer->Invalidate(GetRange());

 
             long newCaretPosition = GetPosition() + m_newParagraphs.GetRange().GetLength() - 1;
             if (m_newParagraphs.GetPartialParagraph())
 
             long newCaretPosition = GetPosition() + m_newParagraphs.GetRange().GetLength() - 1;
             if (m_newParagraphs.GetPartialParagraph())


@@ -3803,6 +4037,7 @@ bool wxRichTextAction::Do()
         {
             m_buffer->DeleteRange(GetRange());
             m_buffer->UpdateRanges();
         {
             m_buffer->DeleteRange(GetRange());
             m_buffer->UpdateRanges();

+            m_buffer->Invalidate(wxRichTextRange(GetRange().GetStart(), GetRange().GetStart()));

 
             UpdateAppearance(GetRange().GetStart()-1, true /* send update event */);
 
 
             UpdateAppearance(GetRange().GetStart()-1, true /* send update event */);
 


@@ -3811,6 +4046,7 @@ bool wxRichTextAction::Do()
     case wxRICHTEXT_CHANGE_STYLE:
         {
             ApplyParagraphs(GetNewParagraphs());
     case wxRICHTEXT_CHANGE_STYLE:
         {
             ApplyParagraphs(GetNewParagraphs());

+            m_buffer->Invalidate(GetRange());

 
             UpdateAppearance(GetPosition());
 
 
             UpdateAppearance(GetPosition());
 


@@ -3833,6 +4069,7 @@ bool wxRichTextAction::Undo()
         {
             m_buffer->DeleteRange(GetRange());
             m_buffer->UpdateRanges();
         {
             m_buffer->DeleteRange(GetRange());
             m_buffer->UpdateRanges();

+            m_buffer->Invalidate(wxRichTextRange(GetRange().GetStart(), GetRange().GetStart()));

 
             long newCaretPosition = GetPosition() - 1;
             // if (m_newParagraphs.GetPartialParagraph())
 
             long newCaretPosition = GetPosition() - 1;
             // if (m_newParagraphs.GetPartialParagraph())


@@ -3846,6 +4083,7 @@ bool wxRichTextAction::Undo()
         {
             m_buffer->InsertFragment(GetRange().GetStart(), m_oldParagraphs);
             m_buffer->UpdateRanges();
         {
             m_buffer->InsertFragment(GetRange().GetStart(), m_oldParagraphs);
             m_buffer->UpdateRanges();

+            m_buffer->Invalidate(GetRange());

 
             UpdateAppearance(GetPosition(), true /* send update event */);
 
 
             UpdateAppearance(GetPosition(), true /* send update event */);
 


@@ -3854,6 +4092,7 @@ bool wxRichTextAction::Undo()
     case wxRICHTEXT_CHANGE_STYLE:
         {
             ApplyParagraphs(GetOldParagraphs());
     case wxRICHTEXT_CHANGE_STYLE:
         {
             ApplyParagraphs(GetOldParagraphs());

+            m_buffer->Invalidate(GetRange());

 
             UpdateAppearance(GetPosition());
 
 
             UpdateAppearance(GetPosition());
 


@@ -3881,7 +4120,7 @@ void wxRichTextAction::UpdateAppearance(long caretPosition, bool sendUpdateEvent
             if (sendUpdateEvent)
                 m_ctrl->SendUpdateEvent();
         }
             if (sendUpdateEvent)
                 m_ctrl->SendUpdateEvent();
         }

-    }    
+    }

 }
 
 /// Replace the buffer paragraphs with the new ones.
 }
 
 /// Replace the buffer paragraphs with the new ones.


@@ -4132,23 +4371,23 @@ bool wxTextAttrEqPartial(const wxTextAttrEx& attr1, const wxTextAttrEx& attr2, i
         (attr1.GetRightIndent() != attr2.GetRightIndent()))
         return false;
 
         (attr1.GetRightIndent() != attr2.GetRightIndent()))
         return false;
 

-    if ((flags && wxTEXT_ATTR_PARA_SPACING_AFTER) &&
+    if ((flags & wxTEXT_ATTR_PARA_SPACING_AFTER) &&

         (attr1.GetParagraphSpacingAfter() != attr2.GetParagraphSpacingAfter()))
         return false;
 
         (attr1.GetParagraphSpacingAfter() != attr2.GetParagraphSpacingAfter()))
         return false;
 

-    if ((flags && wxTEXT_ATTR_PARA_SPACING_BEFORE) &&
+    if ((flags & wxTEXT_ATTR_PARA_SPACING_BEFORE) &&

         (attr1.GetParagraphSpacingBefore() != attr2.GetParagraphSpacingBefore()))
         return false;
 
         (attr1.GetParagraphSpacingBefore() != attr2.GetParagraphSpacingBefore()))
         return false;
 

-    if ((flags && wxTEXT_ATTR_LINE_SPACING) &&
+    if ((flags & wxTEXT_ATTR_LINE_SPACING) &&

         (attr1.GetLineSpacing() != attr2.GetLineSpacing()))
         return false;
 
         (attr1.GetLineSpacing() != attr2.GetLineSpacing()))
         return false;
 

-    if ((flags && wxTEXT_ATTR_CHARACTER_STYLE_NAME) &&
+    if ((flags & wxTEXT_ATTR_CHARACTER_STYLE_NAME) &&

         (attr1.GetCharacterStyleName() != attr2.GetCharacterStyleName()))
         return false;
 
         (attr1.GetCharacterStyleName() != attr2.GetCharacterStyleName()))
         return false;
 

-    if ((flags && wxTEXT_ATTR_PARAGRAPH_STYLE_NAME) &&
+    if ((flags & wxTEXT_ATTR_PARAGRAPH_STYLE_NAME) &&

         (attr1.GetParagraphStyleName() != attr2.GetParagraphStyleName()))
         return false;
 
         (attr1.GetParagraphStyleName() != attr2.GetParagraphStyleName()))
         return false;
 


@@ -4214,23 +4453,23 @@ bool wxTextAttrEqPartial(const wxTextAttrEx& attr1, const wxRichTextAttr& attr2,
         (attr1.GetRightIndent() != attr2.GetRightIndent()))
         return false;
 
         (attr1.GetRightIndent() != attr2.GetRightIndent()))
         return false;
 

-    if ((flags && wxTEXT_ATTR_PARA_SPACING_AFTER) &&
+    if ((flags & wxTEXT_ATTR_PARA_SPACING_AFTER) &&

         (attr1.GetParagraphSpacingAfter() != attr2.GetParagraphSpacingAfter()))
         return false;
 
         (attr1.GetParagraphSpacingAfter() != attr2.GetParagraphSpacingAfter()))
         return false;
 

-    if ((flags && wxTEXT_ATTR_PARA_SPACING_BEFORE) &&
+    if ((flags & wxTEXT_ATTR_PARA_SPACING_BEFORE) &&

         (attr1.GetParagraphSpacingBefore() != attr2.GetParagraphSpacingBefore()))
         return false;
 
         (attr1.GetParagraphSpacingBefore() != attr2.GetParagraphSpacingBefore()))
         return false;
 

-    if ((flags && wxTEXT_ATTR_LINE_SPACING) &&
+    if ((flags & wxTEXT_ATTR_LINE_SPACING) &&

         (attr1.GetLineSpacing() != attr2.GetLineSpacing()))
         return false;
 
         (attr1.GetLineSpacing() != attr2.GetLineSpacing()))
         return false;
 

-    if ((flags && wxTEXT_ATTR_CHARACTER_STYLE_NAME) &&
+    if ((flags & wxTEXT_ATTR_CHARACTER_STYLE_NAME) &&

         (attr1.GetCharacterStyleName() != attr2.GetCharacterStyleName()))
         return false;
 
         (attr1.GetCharacterStyleName() != attr2.GetCharacterStyleName()))
         return false;
 

-    if ((flags && wxTEXT_ATTR_PARAGRAPH_STYLE_NAME) &&
+    if ((flags & wxTEXT_ATTR_PARAGRAPH_STYLE_NAME) &&

         (attr1.GetParagraphStyleName() != attr2.GetParagraphStyleName()))
         return false;
 
         (attr1.GetParagraphStyleName() != attr2.GetParagraphStyleName()))
         return false;
 


@@ -4340,7 +4579,7 @@ bool wxRichTextApplyStyle(wxRichTextAttr& destStyle, const wxTextAttrEx& style)
 
 bool wxRichTextApplyStyle(wxTextAttrEx& destStyle, const wxRichTextAttr& style)
 {
 
 bool wxRichTextApplyStyle(wxTextAttrEx& destStyle, const wxRichTextAttr& style)
 {

-    
+

     // Whole font. Avoiding setting individual attributes if possible, since
     // it recreates the font each time.
     if ((style.GetFlags() & (wxTEXT_ATTR_FONT)) == (wxTEXT_ATTR_FONT))
     // Whole font. Avoiding setting individual attributes if possible, since
     // it recreates the font each time.
     if ((style.GetFlags() & (wxTEXT_ATTR_FONT)) == (wxTEXT_ATTR_FONT))


@@ -4354,16 +4593,16 @@ bool wxRichTextApplyStyle(wxTextAttrEx& destStyle, const wxRichTextAttr& style)
 
         if (style.GetFlags() & wxTEXT_ATTR_FONT_FACE)
             font.SetFaceName(style.GetFontFaceName());
 
         if (style.GetFlags() & wxTEXT_ATTR_FONT_FACE)
             font.SetFaceName(style.GetFontFaceName());

-        
+

         if (style.GetFlags() & wxTEXT_ATTR_FONT_SIZE)
             font.SetPointSize(style.GetFontSize());
         if (style.GetFlags() & wxTEXT_ATTR_FONT_SIZE)
             font.SetPointSize(style.GetFontSize());

-        
+

         if (style.GetFlags() & wxTEXT_ATTR_FONT_ITALIC)
             font.SetStyle(style.GetFontStyle());
         if (style.GetFlags() & wxTEXT_ATTR_FONT_ITALIC)
             font.SetStyle(style.GetFontStyle());

-        
+

         if (style.GetFlags() & wxTEXT_ATTR_FONT_WEIGHT)
             font.SetWeight(style.GetFontWeight());
         if (style.GetFlags() & wxTEXT_ATTR_FONT_WEIGHT)
             font.SetWeight(style.GetFontWeight());

-        
+

         if (style.GetFlags() & wxTEXT_ATTR_FONT_UNDERLINE)
             font.SetUnderlined(style.GetFontUnderlined());
 
         if (style.GetFlags() & wxTEXT_ATTR_FONT_UNDERLINE)
             font.SetUnderlined(style.GetFontUnderlined());
 


@@ -4549,6 +4788,9 @@ void wxRichTextAttr::CopyTo(wxTextAttrEx& attr) const
 wxFont wxRichTextAttr::CreateFont() const
 {
     wxFont font(m_fontSize, wxDEFAULT, m_fontStyle, m_fontWeight, m_fontUnderlined, m_fontFaceName);
 wxFont wxRichTextAttr::CreateFont() const
 {
     wxFont font(m_fontSize, wxDEFAULT, m_fontStyle, m_fontWeight, m_fontUnderlined, m_fontFaceName);

+#ifdef __WXMAC__
+    font.SetNoAntiAliasing(true);
+#endif

     return font;
 }
 
     return font;
 }
 


@@ -4623,6 +4865,7 @@ void wxTextAttrEx::operator= (const wxTextAttr& attr)
 
 IMPLEMENT_CLASS(wxRichTextFileHandler, wxObject)
 
 
 IMPLEMENT_CLASS(wxRichTextFileHandler, wxObject)
 

+#if wxUSE_STREAMS

 bool wxRichTextFileHandler::LoadFile(wxRichTextBuffer *buffer, const wxString& filename)
 {
     wxFFileInputStream stream(filename);
 bool wxRichTextFileHandler::LoadFile(wxRichTextBuffer *buffer, const wxString& filename)
 {
     wxFFileInputStream stream(filename);


@@ -4640,6 +4883,7 @@ bool wxRichTextFileHandler::SaveFile(wxRichTextBuffer *buffer, const wxString& f
     else
         return false;
 }
     else
         return false;
 }

+#endif // wxUSE_STREAMS

 
 /// Can we handle this filename (if using files)? By default, checks the extension.
 bool wxRichTextFileHandler::CanHandle(const wxString& filename) const
 
 /// Can we handle this filename (if using files)? By default, checks the extension.
 bool wxRichTextFileHandler::CanHandle(const wxString& filename) const


@@ -4658,20 +4902,28 @@ bool wxRichTextFileHandler::CanHandle(const wxString& filename) const
 IMPLEMENT_CLASS(wxRichTextPlainTextHandler, wxRichTextFileHandler)
 
 #if wxUSE_STREAMS
 IMPLEMENT_CLASS(wxRichTextPlainTextHandler, wxRichTextFileHandler)
 
 #if wxUSE_STREAMS

-bool wxRichTextPlainTextHandler::LoadFile(wxRichTextBuffer *buffer, wxInputStream& stream)
+bool wxRichTextPlainTextHandler::DoLoadFile(wxRichTextBuffer *buffer, wxInputStream& stream)

 {
     if (!stream.IsOk())
         return false;
 
     wxString str;
 {
     if (!stream.IsOk())
         return false;
 
     wxString str;

-    int ch = 0;
+    int lastCh = 0;

 
     while (!stream.Eof())
     {
 
     while (!stream.Eof())
     {

-        ch = stream.GetC();
+        int ch = stream.GetC();
+
+        if (!stream.Eof())
+        {
+            if (ch == 10 && lastCh != 13)
+                str += wxT('\n');
+
+            if (ch > 0 && ch != 10)
+                str += wxChar(ch);

 
 

-        if (ch > 0)
-            str += ch;
+            lastCh = ch;
+        }

     }
 
     buffer->Clear();
     }
 
     buffer->Clear();


@@ -4682,7 +4934,7 @@ bool wxRichTextPlainTextHandler::LoadFile(wxRichTextBuffer *buffer, wxInputStrea
 
 }
 
 
 }
 

-bool wxRichTextPlainTextHandler::SaveFile(wxRichTextBuffer *buffer, wxOutputStream& stream)
+bool wxRichTextPlainTextHandler::DoSaveFile(wxRichTextBuffer *buffer, wxOutputStream& stream)

 {
     if (!stream.IsOk())
         return false;
 {
     if (!stream.IsOk())
         return false;


@@ -4693,8 +4945,7 @@ bool wxRichTextPlainTextHandler::SaveFile(wxRichTextBuffer *buffer, wxOutputStre
     stream.Write((const char*) buf, text.Length());
     return true;
 }
     stream.Write((const char*) buf, text.Length());
     return true;
 }

-
-#endif
+#endif // wxUSE_STREAMS

 
 /*
  * Stores information about an image, in binary in-memory form
 
 /*
  * Stores information about an image, in binary in-memory form


@@ -4748,10 +4999,10 @@ bool wxRichTextImageBlock::MakeImageBlock(const wxString& filename, int imageTyp
     m_imageType = imageType;
 
     wxString filenameToRead(filename);
     m_imageType = imageType;
 
     wxString filenameToRead(filename);

-    bool removeFile = FALSE;
+    bool removeFile = false;

 
     if (imageType == -1)
 
     if (imageType == -1)

-        return FALSE; // Could not determine image type
+        return false; // Could not determine image type

 
     if ((imageType != wxBITMAP_TYPE_JPEG) && convertToJPEG)
     {
 
     if ((imageType != wxBITMAP_TYPE_JPEG) && convertToJPEG)
     {


@@ -4764,13 +5015,13 @@ bool wxRichTextImageBlock::MakeImageBlock(const wxString& filename, int imageTyp
 
         image.SaveFile(tempFile, wxBITMAP_TYPE_JPEG);
         filenameToRead = tempFile;
 
         image.SaveFile(tempFile, wxBITMAP_TYPE_JPEG);
         filenameToRead = tempFile;

-        removeFile = TRUE;
+        removeFile = true;

 
         m_imageType = wxBITMAP_TYPE_JPEG;
     }
     wxFile file;
     if (!file.Open(filenameToRead))
 
         m_imageType = wxBITMAP_TYPE_JPEG;
     }
     wxFile file;
     if (!file.Open(filenameToRead))

-        return FALSE;
+        return false;

 
     m_dataSize = (size_t) file.Length();
     file.Close();
 
     m_dataSize = (size_t) file.Length();
     file.Close();


@@ -4793,24 +5044,24 @@ bool wxRichTextImageBlock::MakeImageBlock(wxImage& image, int imageType, int qua
     image.SetOption(wxT("quality"), quality);
 
     if (imageType == -1)
     image.SetOption(wxT("quality"), quality);
 
     if (imageType == -1)

-        return FALSE; // Could not determine image type
+        return false; // Could not determine image type

 
     wxString tempFile;
     bool success = wxGetTempFileName(_("image"), tempFile) ;
 
     wxString tempFile;
     bool success = wxGetTempFileName(_("image"), tempFile) ;

-    
+

     wxASSERT(success);
     wxUnusedVar(success);
     wxASSERT(success);
     wxUnusedVar(success);

-    
+

     if (!image.SaveFile(tempFile, m_imageType))
     {
         if (wxFileExists(tempFile))
             wxRemoveFile(tempFile);
     if (!image.SaveFile(tempFile, m_imageType))
     {
         if (wxFileExists(tempFile))
             wxRemoveFile(tempFile);

-        return FALSE;
+        return false;

     }
 
     wxFile file;
     if (!file.Open(tempFile))
     }
 
     wxFile file;
     if (!file.Open(tempFile))

-        return FALSE;
+        return false;

 
     m_dataSize = (size_t) file.Length();
     file.Close();
 
     m_dataSize = (size_t) file.Length();
     file.Close();


@@ -4859,7 +5110,7 @@ void wxRichTextImageBlock::operator=(const wxRichTextImageBlock& block)
 bool wxRichTextImageBlock::Load(wxImage& image)
 {
     if (!m_data)
 bool wxRichTextImageBlock::Load(wxImage& image)
 {
     if (!m_data)

-        return FALSE;
+        return false;

 
     // Read in the image.
 #if 1
 
     // Read in the image.
 #if 1


@@ -4872,7 +5123,7 @@ bool wxRichTextImageBlock::Load(wxImage& image)
 
     if (!WriteBlock(tempFile, m_data, m_dataSize))
     {
 
     if (!WriteBlock(tempFile, m_data, m_dataSize))
     {

-        return FALSE;
+        return false;

     }
     success = image.LoadFile(tempFile, GetImageType());
     wxRemoveFile(tempFile);
     }
     success = image.LoadFile(tempFile, GetImageType());
     wxRemoveFile(tempFile);


@@ -4890,7 +5141,7 @@ bool wxRichTextImageBlock::WriteHex(wxOutputStream& stream)
     {
         hex = wxDecToHex(m_data[i]);
         wxCharBuffer buf = hex.ToAscii();
     {
         hex = wxDecToHex(m_data[i]);
         wxCharBuffer buf = hex.ToAscii();

-        
+

         stream.Write((const char*) buf, hex.Length());
     }
 
         stream.Write((const char*) buf, hex.Length());
     }
 


@@ -4913,7 +5164,7 @@ bool wxRichTextImageBlock::ReadHex(wxInputStream& stream, int length, int imageT
         str[0] = stream.GetC();
         str[1] = stream.GetC();
 
         str[0] = stream.GetC();
         str[1] = stream.GetC();
 

-        m_data[i] = wxHexToDec(str);
+        m_data[i] = (unsigned char)wxHexToDec(str);

     }
 
     m_dataSize = dataSize;
     }
 
     m_dataSize = dataSize;


@@ -4957,11 +5208,10 @@ bool wxRichTextImageBlock::WriteBlock(const wxString& filename, unsigned char* b
 {
     wxFileOutputStream outStream(filename);
     if (!outStream.Ok())
 {
     wxFileOutputStream outStream(filename);
     if (!outStream.Ok())

-        return FALSE;
+        return false;

 
     return WriteBlock(outStream, block, size);
 }
 
 #endif
     // wxUSE_RICHTEXT
 
     return WriteBlock(outStream, block, size);
 }
 
 #endif
     // wxUSE_RICHTEXT

-