如何将数据从NSWindowController传递到其NSViewController？ [英] How to pass data from NSWindowController to its NSViewController?

问题描述

我有一个 IBOutlet 的 NSToolBar 按钮在我的 NSWindowController class，这是我的主窗口类：

  class MainWindowController：NSWindowController {
 
 @ IBOutlet weak var myButton：NSButton！ 
 
 // ... 
} 
  

c $> $

如何在我的内容 NSViewController 中访问此按钮？是否有更好的方法来组织 IBOutlets 和控制器以方便此访问？

解决方案

如何使用委托？此示例将更改您的按钮的标题。

  @objc protocol SomeDelegate {
 func changeTitle（title：String）
} 
 b $ b class ViewController：NSViewController {
 
 weak var delegate：SomeDelegate？ 
 
 @IBAction func myAction（sender：AnyObject）{
 delegate？.changeTitle（NewTitle）
} 
 
} 
 
 class MainWindowController：NSWindowController，SomeDelegate {
 
 @IBOutlet weak var myButton：NSButton！ 
 
 override func windowDidLoad（）{
 super.windowDidLoad（）
 
 //在窗口控件的窗口加载完成后， nib文件。 
 let myVc = window！.contentViewController as！ ViewController 
 myVc.delegate = self 
 
} 
 
 func changeTitle（title：String）{
 myButton.title = title 
} 
 
} 
  

I have a IBOutlet of a NSToolBar button in my NSWindowController class, which is my main window class:

class MainWindowController: NSWindowController {

    @IBOutlet weak var myButton: NSButton!

    // ...
}

I have a class MainViewController that is that content NSViewController of the main window.

How can I access this button in my content NSViewController? Is there a better way to organize the IBOutlets and the controllers to facilitate this access?

解决方案

How about like this using delegate? This example will change your button's title.

@objc protocol SomeDelegate {
    func changeTitle(title: String)
}

class ViewController: NSViewController {

    weak var delegate: SomeDelegate?

    @IBAction func myAction(sender: AnyObject) {
        delegate?.changeTitle("NewTitle")
    }

}

class MainWindowController: NSWindowController, SomeDelegate {

    @IBOutlet weak var myButton: NSButton!

    override func windowDidLoad() {
        super.windowDidLoad()

        // Implement this method to handle any initialization after your window controller's window has been loaded from its nib file.
        let myVc = window!.contentViewController as! ViewController
        myVc.delegate = self

    }

    func changeTitle(title: String) {
        myButton.title = title
    }

}

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