Bug 167619 [Undo] 'Undo Delete Resources' should not be available after full project deletion
I20061212-0010. When deleting a project with all its contents there's a comment in the dialog that I cannot undo (OK). Once the project is gone I can still undo the project which is unexpected. Undoing the deletion results in an empty project which can be in a completely weird state (e.g. a Java project without a .classpath file). Adding Markus to track whether deleting from the Package Explorer is affected too.
bundles/org.eclipse.ui.ide/extensions/org/eclipse/ui/actions/DeleteResourceAction.java
* 
		 * @param t
		 *            the testing mode
		 */
		void setTestingMode(boolean t) {
			fIsTesting = t;
		}
	}
	/**
	 * The id of this action.
	 */
	public static final String ID = PlatformUI.PLUGIN_ID
			+ ".DeleteResourceAction";
	/**
	 * The shell in which to show any dialogs.
	 */
	private Shell shell;
	/**
	 * Whether or not we are deleting content for projects.
	 */
	private boolean deleteContent = false;
	/**
	 * Flag that allows testing mode ... it won't pop up the project delete
	 * dialog, and will return "delete all content".
	 */
	protected boolean fTestingMode = false;
	private String[] modelProviderIds;
	/**
	 * Creates a new delete resource action.
	 *