Java / Swing：从JPanel内部获取Window / JFrame [英] Java/Swing: Obtain Window/JFrame from inside a JPanel

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（依此类推），直到找到一个窗口：

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

你可以使用 SwingUtilities.getWindowAncestor（...）将返回一个可以转换为顶级类型的窗口的方法。

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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