| Class Summary | 
| DragAndDropHandler | An abstract class implemented by palette clients to implement drag and drop
 of new items into the palette window and to customize the default Transferable 
 instance of items being dragged from the palette window to editor area. | 
| PaletteActions | An interface implemented by palette clients to provide custom actions
 for popup menus and actions for import of new items. | 
| PaletteController | PaletteController provides access to data in the palette. | 
| PaletteFactory | PaletteFactory creating new PaletteController instances. | 
| PaletteFilter | A palette filter than can prevent some categories and/or items from being
 displayed in palette's window. |