change mouse cursor when over selection

moved to mouse handler. don't change when dragging or selecting.

lib/ace/css/editor.css

@@ -50,6 +50,10 @@
     cursor: text !important;
 }
 
+.ace_selection .ace_content {
+    cursor: default;
+}
+
 .ace_gutter {
     position: absolute;
     overflow : hidden;

lib/ace/mouse/mouse_handler.js

@@ -74,6 +74,17 @@ var MouseHandler = function(editor) {
         editor.focus();
         return event.preventDefault(e);
     });
+
+    editor.on('mousemove', function(e){
+        var char = editor.renderer.pixelToScreenCoordinates(e.x, e.y);
+        var range = editor.session.selection.getRange();
+
+        if( !range.isEmpty() && range.contains(char.row, char.column) ){
+            editor.setStyle("ace_selection");
+        }else{
+            editor.unsetStyle("ace_selection");
+        }
+    });
 };
 
 (function() {