NSPopover以分离状态启动 [英] NSPopover to start in a detached state

问题描述

是否有一种方法可以强制NSPopover以分离状态启动?我只看到isDetached，它是弹出框状态的只读属性，还有NSPopoverDelegate方法detachableWindow(forPopover:)，它使我可以覆盖创建的窗口.我实际上想单击一个按钮，并使NSPopover在此照片的状态下启动.

Is there a way to force the NSPopover to start in the detached state? I only see isDetached which is a read-only property for the state of the popover and an NSPopoverDelegate method detachableWindow(forPopover:) which lets me override the window that gets created. I'd like to essentially click a button and have the NSPopover start in the state in this photo.

此窗口的样式恰好是产品的要求，我似乎找不到任何NSWindow样式设置来使窗口做类似这样的事情(也没有NSPanel)

The style of this window is exactly what a product requirement is and I can't seem to find any NSWindow style settings that would make a window do something like this (nor an NSPanel)

这种独立的弹出框功能在其中似乎很特别:

This detached popover functionality seems special in that it:

1. 非模态，但保持在主应用之上.仍然能够与主应用程序交互，就像在消息"中一样，如何仍然可以单击并键入新消息.
2. 单击另一个应用程序AppFoo，会将主应用程序和帮助程序窗口都置于AppFoo后面.
3. 帮助器窗口可以移动，并且在应用程序停用后不会隐藏(其他应用程序被选中).
4. 左上角有一个小小的本机灰色X.

推荐答案

这就是诀窍. 使用所需的委托方法detachableWindowForPopover:为您完成工作，例如:

Here is the trick. Use the required delegate method detachableWindowForPopover: to do the work for you, like:

- (void) showPopoverDetached
{
    NSWindow* detachedWindow = [self detachableWindowForPopover:nil];

    [detachedWindow.windowController showWindow:nil];
}

似乎Apple工程师以一种非常聪明的方式实现了detachableWindowForPopover:，我想它使用了内容视图控制器类，并且将始终创建类似分离窗口实例的单例. 一旦detachableWindowForPopover:调用了所呈现的窗口实例，无论何时何地调用它，都将重复使用它，直接调用它(从上面的示例中的函数)或间接调用它(例如，当您拖动，分离，从其原始位置)

Seems that the Apple engineers implemented detachableWindowForPopover: on a pretty smart way, I guess it uses the content view controller class, and will always create a singleton like instance of the detached window. Once detachableWindowForPopover: has called the presented window instance will be re-used no matter when and why it is called, called it directly (from a func like my sample above) or indirectly (e.g. when you drag out, detach, the popover from its original position)

这样，它们可以防止弹出窗口两次"分离，我们还可以以编程方式实现分离的方法，这对他们来说是一件好事！

This way they can prevent a popover being detached 'twice' and we can also implement the detached way programmatically, nice job from them!

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