使用NSNotification委派NSTextField的方法 [英] Delegate methods of NSTextField using NSNotification

问题描述

我在窗口中有一个NSTokenField。我使用它来存储与Core Data对象相关的标签。现在我设置了，我可以添加标签到对象，但我不能删除它们。我需要一个委托方法在NSTokenField，可以让我知道什么时候用户已经将焦点移出NSTokenField。因为NSTokenField是NSTextField的子类，我想我可以使用它的委托方法。它有两个我认为可能有用：

I have an NSTokenField in a window. I am using it to store tags related to a Core Data object. Right now I have it set up such that I can add tags to the objects, but I cannot delete them. I need a delegate method on the NSTokenField that can let me know when the user has moved the focus out of the NSTokenField. Since NSTokenField is a subclass of NSTextField I figured that I could use its delegate methods. It has two that I think could be useful:

- (void)textDidChange:(NSNotification *)aNotification
- (void)textDidEndEditing:(NSNotification *)aNotification

我将控制器类设置为我的NSTokenField并把这两个方法放入我的控制器类。我把一个基本的NSLog到他们每个人，当我与NSTokenField交互时也不触发。我猜这与NSNotification有关系。如何激活这些方法？

I set my controller class as the delegate of my NSTokenField and put both of these methods into my controller class. I put a basic NSLog into each of them and neither is triggered when I interact with the NSTokenField. I am guessing it has something to do with NSNotification. How do I activate these methods?

推荐答案

NSTokenField code> controlTextDidChange：和 controlTextDidEndEditing：通知;改变以上两种方法，实现它们：

The NSTokenField invokes the controlTextDidChange: and the controlTextDidEndEditing: notifications; change the two methods above, implementing them as:

- (void)controlTextDidChange:(NSNotification*)aNotification
{
    //Code here..
}

- (void)controlTextDidEndEditing:(NSNotification *)aNotification
{
    //Code here..
}

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