如何更改单个JTree节点的样式(颜色，字体) [英] How to change style (color, font) of a single JTree node

问题描述

我在JFrame的两个面板中有两个JTree.我想更改从一棵树拖放到另一棵树上的节点的样式(颜色和字体).请提供一种永久更改JTree节点颜色的方法.

I have two JTree in two panels in a JFrame. I want to change the style(color and font) of nodes on drag and drop from one tree to the other.Please provide me a way to change the color of a JTree node permanently.

推荐答案

首先，您将需要一个可以处理样式和颜色的数据对象.您可以将DefaultMutableTreeNode子类化，并使用getts和setters添加这些数据项

To start, you will need to have a data object that can handle style and color. You could subclass DefaultMutableTreeNode and add these data items with getts and setters

然后，您需要创建一个自定义TreeCellRenderer.我建议扩展DefaultTreeCellRenderer，并在重写的处理程序中，检查您的自定义类，并修改JLabel输出以使用Font和Color(如果设置了这些值)

Then you'd need to create a custom TreeCellRenderer. I recommend extending DefaultTreeCellRenderer, and in the overridden handler, checking for your custom class, and modifying the JLabel output to use the Font and Color if these values are set

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