Bug 200316 [CommonNavigator] Can not contribute property page to classpath container in project explorer
bundles/org.eclipse.ui.navigator.resources/src/org/eclipse/ui/internal/navigator/resources/actions/PropertiesActionProvider.java
propertiesAction);
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.actions.ActionGroup#setContext(org.eclipse.ui.actions.ActionContext)
	 */
	public void setContext(ActionContext context) {
		super.setContext(context);
		propertiesAction.selectionChanged(delegateSelectionProvider
				.getSelection());
	}
	private class DelegateIAdaptable implements IAdaptable {
		private Object delegate;
		private DelegateIAdaptable(Object o) {
			delegate = o;
		}
		/*
		 * (non-Javadoc)
		 * 
		 * @see org.eclipse.core.runtime.IAdaptable#getAdapter(java.lang.Class)
		 */
		public Object getAdapter(Class adapter) {
			if (adapter.isInstance(delegate)) {
				return delegate;
			}
			return Platform.getAdapterManager().getAdapter(delegate, adapter);
		}
	}
	private class DelegateSelectionProvider implements ISelectionProvider {