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
new RegisterActions( NewDataSetAction.ID,
					Messages.getString( "designerActionBarContributor.menu.data-newdataset" ) ),
	};
	private static final RegisterActions[] parameterActions = new RegisterActions[]{
			new RegisterActions( NewParameterAction.INSERT_SCALAR_PARAMETER,
					Messages.getString( "ParametersNodeProvider.menu.text.parameter" ) ),
			new RegisterActions( NewParameterAction.INSERT_CASCADING_PARAMETER_GROUP,
					Messages.getString( "ParametersNodeProvider.menu.text.cascadingParameter" ) ),
			new RegisterActions( NewParameterAction.INSERT_PARAMETER_GROUP,
					Messages.getString( "ParametersNodeProvider.menu.text.group" ) ),
	};
	/*
	 * @see org.eclipse.gef.ui.actions.ActionBarContributor#buildActions()
	 */
	protected void buildActions( )
	{
		addRetargetAction( new UndoRetargetAction( ) );
		addRetargetAction( new RedoRetargetAction( ) );
		addRetargetAction( new DeleteRetargetAction( ) );
		addRetargetAction( new ZoomInRetargetAction( ) );
		addRetargetAction( new ZoomOutRetargetAction( ) );
		addRetargetAction( new RetargetAction( ActionFactory.CUT.getId( ), null ) );
		addRetargetAction( new RetargetAction( ActionFactory.COPY.getId( ),
				null ) );
		addRetargetAction( new RetargetAction( ActionFactory.PASTE.getId( ),
				null ) );
		addRetargetAction( new RetargetAction( ImportCSSStyleAction.ID,
				ImportCSSStyleAction.ACTION_TEXT ) );
		addRetargetAction( new RetargetAction( AddStyleAction.ID,
				Messages.getString( "DesignerActionBarContributor.style.new" ) ) );