如何获取JFrame中的所有元素？ [英] How to get all elements inside a JFrame?

问题描述

我有这个代码来获取我需要的所有元素并进行一些处理。问题是我需要指定每个面板来获取其中的元素。

I have this code to get all the elements I need and do some processing. The problem is I need to specify every panel I have to get the elements inside it.

for (Component c : panCrawling.getComponents()) {
    //processing
}
for (Component c : panFile.getComponents()) {
    //processing
}
for (Component c : panThread.getComponents()) {
    //processing
}
for (Component c : panLog.getComponents()) {
    //processing
}
//continue to all panels

我想做这样的事情并得到所有元素无需拼写所有面板名称。我是怎么做到的下面的代码没有获得所有元素。

I want to do something like this and get all the elements without need specefy all the panels names. How I do this. The code below don't get all the elements.

for (Component c : this.getComponents()) {
    //processing
}

推荐答案

你可以写一个递归方法并递归每个容器：

You can write a recursive method and recurse on every container:

此网站提供了一些示例代码：

This site provides some sample code:

public static List<Component> getAllComponents(final Container c) {
    Component[] comps = c.getComponents();
    List<Component> compList = new ArrayList<Component>();
    for (Component comp : comps) {
        compList.add(comp);
        if (comp instanceof Container)
            compList.addAll(getAllComponents((Container) comp));
    }
    return compList;
}

如果你只想要直接子组件的组件，你可以限制递归深度为2。

If you only want the components of the immediate sub-components, you could limit the recursion depth to 2.

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