the workbench toolbar and menu bar using the
tags toolbarPath and menubarPath. It uses the class WindowActionDelegate
which implements IWorkbenchWindowActionDelegate to implement the action.
The action for the popup menu is defined as an objectContribution by the
class PopupMenuActionDelegate in&nbsp; the extension point org.eclipse.ui.popupMenus.
PopupMenuActionDelegate implements IObjectActionDelegate and uses the IWorkbenchPart
provided to open a message dialog. The view action ViewActionDelegate is
defi