/** Configures the palette viewer and adds a drag source listener to it */
	protected PaletteViewerProvider createPaletteViewerProvider() {
		return new PaletteViewerProvider(getEditDomain()) {
			protected void configurePaletteViewer(PaletteViewer viewer) {
					super.configurePaletteViewer(viewer);
					paletteListener = new PaletteListener() {

					@Override
					public void activeToolChanged(PaletteViewer palette,
							ToolEntry tool) {
						getPaletteRoot().setDefaultEntry(tool);
					}
					
				};
				viewer.addPaletteListener(paletteListener);
				viewer.addDragSourceListener(new TemplateTransferDragSourceListener(viewer));
			}
		};
	}