Java/Swing:从 JPanel 中获取 Window/JFrame

Java/Swing: Obtain Window/JFrame from inside a JPanel(Java/Swing:从 JPanel 中获取 Window/JFrame)

问题描述

如何获取 JPanel 所在的 JFrame?

How can I get the JFrame in which a JPanel is living?

我目前的解决方案是向面板询问它的父级(等等)，直到我找到一个窗口:

My current solution is to ask the panel for it's parent (and so on) until I find a Window:

Container parent = this; // this is a JPanel
do {
    parent = parent.getParent();
} while (!(parent instanceof Window) && parent != null);
if (parent != null) {
    // found a parent Window
}

有没有更优雅的方式，标准库中的方法可能是?

Is there a more elegant way, a method in the Standard Library may be?

推荐答案

您可以使用 SwingUtilities.getWindowAncestor(...) 方法，该方法将返回一个您可以转换为顶级类型的 Window.

You could use SwingUtilities.getWindowAncestor(...) method that will return a Window that you could cast to your top level type.

JFrame topFrame = (JFrame) SwingUtilities.getWindowAncestor(this);

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