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
protected boolean updateSelection(IStructuredSelection selection) {
		return super.updateSelection(selection)
				&& canDelete(getSelectedResourcesArray());
	}
	/**
	 * Returns the model provider ids that are known to the client that
	 * instantiated this operation.
	 * 
	 * @return the model provider ids that are known to the client that
	 *         instantiated this operation.
	 * @since 3.2
	 */
	public String[] getModelProviderIds() {
		return modelProviderIds;
	}
	/**
	 * Sets the model provider ids that are known to the client that
	 * instantiated this operation. Any potential side effects reported by these
	 * models during validation will be ignored.
	 * 
	 * @param modelProviderIds
	 *            the model providers known to the client who is using this
	 *            operation.
	 * @since 3.2
	 */
	public void setModelProviderIds(String[] modelProviderIds) {
		this.modelProviderIds = modelProviderIds;
	}
}