Replace() optimization for single line controls restored

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/wxUNIVERSAL@8575 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/univ/textctrl.cpp

@@ -488,6 +488,48 @@ void wxTextCtrl::Replace(long from, long to, const wxString& text)
 
 #else // 1 (new replacement code)
 
+    if ( IsSingleLine() )
+    {
+        // replace the part of the text with the new value
+        wxString valueNew(m_value, (size_t)from);
+
+        // remember it for later use
+        wxCoord startNewText = GetTextWidth(valueNew);
+
+        valueNew += text;
+        if ( (size_t)to < m_value.length() )
+        {
+            valueNew += m_value.c_str() + (size_t)to;
+        }
+
+        // OPT: is the following really ok? not sure any more now at 2 am...
+
+        // we usually refresh till the end of line except of the most common case
+        // when some text is appended to the end of the string in which case we
+        // refresh just it
+        wxCoord widthNewText;
+
+        if ( (size_t)from < m_value.length() )
+        {
+            // refresh till the end of line
+            widthNewText = 0;
+        }
+        else // text appended, not replaced
+        {
+            // refresh only the new text
+            widthNewText = GetTextWidth(text);
+        }
+
+        m_value = valueNew;
+
+        // force m_colLastVisible update
+        m_colLastVisible = -1;
+
+        // repaint
+        RefreshPixelRange(0, startNewText, widthNewText);
+    }
+    else // multiline
+    {
         /*
            Join all the lines in the replacement range into one string, then
            replace a part of it with the new text and break it into lines again.
@@ -598,6 +640,7 @@ void wxTextCtrl::Replace(long from, long to, const wxString& text)
 
         // update the (cached) last position
         m_posLast += text.length() - to + from;
+    }
 
     // update the current position: note that we always put the cursor at the
     // end of the replacement text