Fix handling of & in wxDataViewCtrl markup on wxOSX

Follow up to 60bd6842e4. Apply equivalent
changes to wxMarkupToAttrString, add a new wxItemMarkupToAttrString
class for mnemonics-less strings and use it in wxDataViewTextRenderer.

include/wx/osx/cocoa/private/markuptoattr.h

@@ -16,17 +16,20 @@
 // wxMarkupToAttrString: create NSAttributedString from markup.
 // ----------------------------------------------------------------------------
 
-class wxMarkupToAttrString : public wxMarkupParserAttrOutput
+class wxMarkupToAttrStringBase : public wxMarkupParserAttrOutput
 {
-public:
+protected:
     // We don't care about the original colours because we never use them but
     // we do need the correct initial font as we apply modifiers (e.g. create a
     // font larger than it) to it and so it must be valid.
-    wxMarkupToAttrString(const wxFont& font, const wxString& markup)
-        : wxMarkupParserAttrOutput(font, wxColour(), wxColour())
+    wxMarkupToAttrStringBase(const wxFont& font)
+        : wxMarkupParserAttrOutput(font, wxColour(), wxColour()),
+          m_attrString(NULL)
+    {}
+
+    void Parse(const wxFont& font, const wxString& markup)
     {
-        const wxCFStringRef
-            label(wxControl::RemoveMnemonics(wxMarkupParser::Strip(markup)));
+        const wxCFStringRef label(PrepareText(wxMarkupParser::Strip(markup)));
         m_attrString = [[NSMutableAttributedString alloc]
                         initWithString: label.AsNSString()];
 
@@ -49,11 +52,16 @@ public:
         [m_attrString endEditing];
     }
 
-    ~wxMarkupToAttrString()
+    ~wxMarkupToAttrStringBase()
     {
-        [m_attrString release];
+        if ( m_attrString )
+            [m_attrString release];
     }
 
+    // prepare text chunk for display, e.g. strip mnemonics from it
+    virtual wxString PrepareText(const wxString& text) = 0;
+
+public:
     // Accessor for the users of this class.
     //
     // We keep ownership of the returned string.
@@ -66,7 +74,7 @@ public:
     // Implement base class pure virtual methods to process markup tags.
     virtual void OnText(const wxString& text)
     {
-        m_pos += wxControl::RemoveMnemonics(text).length();
+        m_pos += PrepareText(text).length();
     }
 
     virtual void OnAttrStart(const Attr& WXUNUSED(attr))
@@ -111,9 +119,46 @@ private:
 
     // The positions of starting ranges.
     wxStack<unsigned> m_rangeStarts;
+};
 
 
+// for use with labels with mnemonics
+class wxMarkupToAttrString : public wxMarkupToAttrStringBase
+{
+public:
+    wxMarkupToAttrString(const wxFont& font, const wxString& markup)
+        : wxMarkupToAttrStringBase(font)
+    {
+        Parse(font, markup);
+    }
+
+protected:
+    virtual wxString PrepareText(const wxString& text)
+    {
+        return wxControl::RemoveMnemonics(text);
+    }
+
     wxDECLARE_NO_COPY_CLASS(wxMarkupToAttrString);
 };
 
+
+// for raw markup with no mnemonics
+class wxItemMarkupToAttrString : public wxMarkupToAttrStringBase
+{
+public:
+    wxItemMarkupToAttrString(const wxFont& font, const wxString& markup)
+        : wxMarkupToAttrStringBase(font)
+    {
+        Parse(font, markup);
+    }
+
+protected:
+    virtual wxString PrepareText(const wxString& text)
+    {
+        return text;
+    }
+
+    wxDECLARE_NO_COPY_CLASS(wxItemMarkupToAttrString);
+};
+
 #endif // _WX_OSX_COCOA_PRIVATE_MARKUPTOATTR_H_

src/osx/cocoa/dataview.mm

@@ -2956,7 +2956,7 @@ bool wxDataViewTextRenderer::MacRender()
 #if wxUSE_MARKUP
     if ( m_useMarkup )
     {
-        wxMarkupToAttrString toAttr(wxFont([cell font]), GetValue().GetString());
+        wxItemMarkupToAttrString toAttr(wxFont([cell font]), GetValue().GetString());
         NSMutableAttributedString *str = toAttr.GetNSAttributedString();
 
         if ( [cell lineBreakMode] != NSLineBreakByClipping )