Added rich text buffer clipboard support.

Added double-left-click word selection support.
Now saves only the active attributes to XML.
Eliminated wxRichTextFragment class to allow  wxRichTextBuffer
to be used where wxRichTextFragment was used.
Fixed AddParagraph virtual function hiding warning.
Miscellaneous small wxRichTextCtrl bug fixes and cleanup.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@41542 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/richtext/richtextctrl.cpp

@@ -329,19 +329,6 @@ void wxRichTextCtrl::OnLeftClick(wxMouseEvent& event)
 
         MoveCaret(position, caretAtLineStart);
         SetDefaultStyleToCursorStyle();
-
-#if 0
-        wxWindow* p = GetParent();
-        while (p && !p->IsKindOf(CLASSINFO(wxFrame)))
-            p = p->GetParent();
-
-        wxFrame* frame = wxDynamicCast(p, wxFrame);
-        if (frame)
-        {
-            wxString msg = wxString::Format(wxT("Found position %ld"), position);
-            frame->SetStatusText(msg, 1);
-        }
-#endif
     }
 
     event.Skip();
@@ -417,6 +404,7 @@ void wxRichTextCtrl::OnRightClick(wxMouseEvent& event)
 /// Left-double-click
 void wxRichTextCtrl::OnLeftDClick(wxMouseEvent& event)
 {
+    SelectWord(GetCaretPosition()+1);
     event.Skip();
 }
 
@@ -1620,6 +1608,60 @@ void wxRichTextCtrl::SelectNone()
     m_selectionAnchor = -2;
 }
 
+static bool wxIsWordDelimiter(const wxString& text)
+{
+    static wxString delimiters = wxT(" ,.:;!?-\"'~<7E>$%^&*()_+-=`<60>{}[]@#<>/\\|");
+    return !text.IsEmpty() && delimiters.Find(text) != wxNOT_FOUND;
+}
+
+/// Select the word at the given character position
+bool wxRichTextCtrl::SelectWord(long position)
+{
+    if (position < 0 || position > GetBuffer().GetRange().GetEnd())
+        return false;
+
+    wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(position);
+    if (!para)
+        return false;
+
+    long positionStart = position;
+    long positionEnd = position;
+
+    for (positionStart = position; positionStart >= para->GetRange().GetStart(); positionStart --)
+    {
+        wxString text = GetBuffer().GetTextForRange(wxRichTextRange(positionStart, positionStart));
+        if (wxIsWordDelimiter(text))
+        {
+            positionStart ++;
+            break;
+        }
+    }
+    if (positionStart < para->GetRange().GetStart())
+        positionStart = para->GetRange().GetStart();
+
+    for (positionEnd = position; positionEnd < para->GetRange().GetEnd(); positionEnd ++)
+    {
+        wxString text = GetBuffer().GetTextForRange(wxRichTextRange(positionEnd, positionEnd));
+        if (wxIsWordDelimiter(text))
+        {
+            positionEnd --;
+            break;
+        }
+    }
+    if (positionEnd >= para->GetRange().GetEnd())
+        positionEnd = para->GetRange().GetEnd();
+
+    SetSelection(positionStart, positionEnd+1);
+
+    if (positionStart >= 0)
+    {
+        MoveCaret(positionStart-1, true);
+        SetDefaultStyleToCursorStyle();
+    }
+
+    return true;
+}
+
 wxString wxRichTextCtrl::GetStringSelection() const
 {
     long from, to;
@@ -1743,9 +1785,9 @@ void wxRichTextCtrl::WriteText(const wxString& value)
 
 void wxRichTextCtrl::DoWriteText(const wxString& value, bool WXUNUSED(selectionOnly))
 {
-    wxString valueDos = wxTextFile::Translate(value, wxTextFileType_Unix);
+    wxString valueUnix = wxTextFile::Translate(value, wxTextFileType_Unix);
 
-    GetBuffer().InsertTextWithUndo(m_caretPosition+1, valueDos, this);
+    GetBuffer().InsertTextWithUndo(m_caretPosition+1, valueUnix, this);
 }
 
 void wxRichTextCtrl::AppendText(const wxString& text)
@@ -1951,6 +1993,7 @@ void wxRichTextCtrl::DoSetSelection(long from, long to, bool WXUNUSED(scrollCare
 {
     m_selectionAnchor = from;
     m_selectionRange.SetRange(from, to-1);
+
     Refresh(false);
     PositionCaret();
 }
@@ -2598,22 +2641,16 @@ bool wxRichTextCtrl::ApplyUnderlineToSelection()
 /// Is all of the selection aligned according to the specified flag?
 bool wxRichTextCtrl::IsSelectionAligned(wxTextAttrAlignment alignment)
 {
+    wxRichTextRange range;
     if (HasSelection())
-    {
-        wxRichTextRange range = GetInternalSelectionRange();
-        wxRichTextAttr attr;
-        attr.SetAlignment(alignment);
-
-        return HasParagraphAttributes(range, attr);
-    }
+        range = GetInternalSelectionRange();
     else
-    {
-        // If no selection, then we need to get information from the current paragraph.
-        wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(GetCaretPosition()+1);
-        if (para)
-            return para->GetAttributes().GetAlignment() == alignment;
-    }
-    return false;
+        range = wxRichTextRange(GetCaretPosition()+1, GetCaretPosition()+1);
+
+    wxRichTextAttr attr;
+    attr.SetAlignment(alignment);
+
+    return HasParagraphAttributes(range, attr);
 }
 
 /// Apply alignment to the selection