Bug 146208 ActionBarContributor Enhancement
Use MultiPageEditorActionBarContributor instead of EditorActionBarContributor to support more multi-page feature.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/editors/DesignerActionBarContributor.java
addRetargetAction( new RetargetAction( ApplyStyleMenuAction.ID, null ) );
		addRetargetAction( new RetargetAction( EditStyleMenuAction.ID, null ) );
		addRetargetAction( new RetargetAction( EditGroupMenuAction.ID, null ) );
		addRetargetAction( new RetargetAction( InsertGroupMenuAction.ID, null ) );
		
		registerActions( new RegisterActions[]{
			new RegisterActions( GEFActionConstants.TOGGLE_RULER_VISIBILITY,
					Messages.getString( "DesignerActionBarContributor.menu.element-showRuler" ), 
					IAction.AS_CHECK_BOX )
		} );
		registerActions( new RegisterActions[]{
			new RegisterActions( ToggleMarginVisibilityAction.ID,
					ToggleMarginVisibilityAction.LABEL,
					IAction.AS_CHECK_BOX )
		} );
		registerActions( getInsertElementActions( ) );
		registerActions( elementActions );
		registerActions( dataActions );
		addRetargetAction( new RetargetAction( ImportLibraryAction.ID,
				ImportLibraryAction.ACTION_TEXT ) );
		registerActions( parameterActions );
	}
	/**
	 * Gets insert elements actions including extension points.
	 */
	private RegisterActions[] getInsertElementActions( )
	{
		if ( insertElementActions == null )
		{
			insertElementActions = insertActions;