JavaFX 2 TreeItem中节点的模型标识符 [英] Model-Identifier for Node in JavaFX 2 TreeItem

问题描述

是否可以在JavaFX 2 TreeItem<String>中存储模型对象的标识符或模型对象本身?只有Value可以存储文本...

Is there a way to store an identifier of a model object or the model object itself in a JavaFX 2 TreeItem<String>? There is just Value to store the text...

我正在从模型对象列表中填充TreeView，并且需要在用户单击节点时找到它.我曾经在.NET Windows Forms或HTML中使用Value和Text，但是恐怕我无法将这种思维方式适应JavaFX ...

I'm populating a TreeView from a list of model objects, and need to find it when the user clicks a node. I'm used to work with Value and Text in .NET Windows Forms or HTML and I am afraid I cannot adapt this way of thinking to JavaFX...

推荐答案

您可以将任何对象与TreeView一起使用，它们仅需覆盖toString()即可呈现或扩展javafx.scene.Node

You can use any objects with TreeView, they just have to override toString() for presenting or extend javafx.scene.Node

例如下课:

private static class MyObject {
    private final String value;
    public MyObject(String st) { value = st; }

    public String toString() { return "MyObject{" + "value=" + value + '}'; }
}

TreeView应该以以下方式创建:

TreeView should be created next way:

TreeView<MyObject> treeView = new TreeView<MyObject>();
TreeItem<MyObject> treeRoot = new TreeItem<MyObject>(new MyObject("Root node"));
treeView.setRoot(treeRoot);

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