public void addMouseListener(MouseListener listener) {
// see bug 40889, bug 230073 and AnnotationRulerColumn#isPropagatingMouseListener()
if (listener == fMouseHandler)
super.addMouseListener(listener);
else {
TypedListener typedListener= null;
if (listener != null)
typedListener= new TypedListener(listener);
addListener(SWT.MouseDoubleClick, typedListener);
}
}
};
fCanvas.setBackground(getBackground(fCanvas.getDisplay()));