Bug 153038 NPE when delete master page content in old report design.
UI/org.eclipse.birt.report.designer.ui.editors.schematic/src/org/eclipse/birt/report/designer/internal/ui/editors/layout/ReportEditorWithPalette.java
GraphicalEditorWithFlyoutPalette implements IColleague
{
	protected PaletteRoot paletteRoot;
	private EditPartFactory editPartFactoy;
	
	private ModuleHandle model;
	
	private ModelEventManager manager = createModelEventManager( );
	private FileReportProvider provider;
	private static final String DLG_ERROR_OPEN_ERROR_MSG = "Can't open file";
	public ReportEditorWithPalette( )
	{
		super( );
		setEditDomain( new DefaultEditDomain( this ) );