NSView的viewWillAppear等效项是什么

Question

I have a NSDocument based application with a nib that represents the visual document. As soon as the view Appeared I want to trigger some actions.

For a "normal" UIViewController I would simply override viewDidAppear: . However, NSDocument does not have this method, even though it has a view per document.

Answer 1

NSDocument offers
-(void)windowControllerDidLoadNib:(NSWindowController *)aController; method.
I think this is what you are looking for.
The document window controllers are still accessible using NSDocument 's windowControllers method.

If you have more precise requirements on window appearing/disappearing, becoming key, etc..., you could handle that with window notifications , or window delegation system .

Answer 2

有-[NSDocument showWindows] ，可以在末尾添加一些自定义逻辑。