Managing double buffering

Double buffering is a technique that is used to prevent the screen from flickering in an unpleasant manner when many objects are being manipulated. Since the manager view is implemented as a lightweight component, that is, as a direct subclass of java.awt.Container , it cannot handle double buffering by itself. To use double buffering in an AWT environment, the manager view must be the child of a heavyweight component, specially designed to handle double-buffering for instances of IlvManagerView . These components can be of the IlvManagerViewPanel or of the IlvScrollManagerView class.

The methods of the IlvManagerViewPanel and the IlvScrollManagerView class that handle double-buffering are:

boolean isDoubleBuffering()    

void setDoubleBuffering(boolean set)  

In a Swing application, the manager view is embedded in a JComponent . JComponent objects have their own double-buffering mechanism:

   jcomponent.setDoubleBuffered(true);

When you add an IlvManagerView into an IlvJManagerViewPanel or an IlvJScrollManagerView, local double buffering in the IlvManagerView instance is disabled and Swing double buffering is used instead. In specific situations, when Swing double buffering is disabled, enable IlvManagerView local double buffering by calling setDoubleBuffering after the view has been added to the Swing component.

IlvManager mgr = new IlvManager();
IlvManagerView v = new IlvManagerView(mgr);
IlvManagerViewPanel panel = new IlvManagerViewPanel(v);
panel.setDoubleBuffering(true);