JTree始终以“编辑模式"显示所有节点. [英] JTree, always display all nodes in "edit mode"

问题描述

我正在显示自定义对象的树，并且已经设置了自定义自定义CellTreeEditor和CellTreeRenderer.

I'm displaying a tree of custom objects, and I've got custom custom CellTreeEditor and CellTreeRenderer set.

现在，我真正想要的是始终像在编辑模式"中一样显示所有对象.现在，我几乎完全实现了CellTreeRenderer.getTreeCellRendererComponent()和CellTreeEditor.getTreeCellEditorComponent().这种工作，但是在执行任何编辑之前，我仍然必须单击节点以使其聚焦.

Now what I really want is to always display all objects as in "edit mode". Right now I have the CellTreeRenderer.getTreeCellRendererComponent() and CellTreeEditor.getTreeCellEditorComponent() implemented almost identically. This kind of works, but I still have to click a node to focus it before I can do any editing.

是否还有其他更明智的方法，例如说永远不使用渲染器，默认为我的CellTreeEditor?

Is there any more sensible way of doing this, perhaps like saying no renderer should never be used, defaulting to my CellTreeEditor?

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要弄清楚:我所拥有的是一棵看起来像这样的树(是的，它也看起来像胡扯，但这不重要):

To clearify: What I have is a tree looking like this (and yes, it also looks like crap, but that's beside the point):

现在，我通过具有渲染器和编辑器来完成此任务，该渲染器和编辑器从getTreeCell[Renderer|Editor]Component()返回相同的组件.

Right now, I accomplish this by having a renderer and an editor that returns identical components from getTreeCell[Renderer|Editor]Component().

如果我单击渲染器提供的ComboBox的向下箭头，则在打开下拉菜单时它将略微闪烁，但随后会中断并由我的编辑器组件替换.这意味着我必须再次单击它才能打开下拉列表.这是我要避免的行为.

If I click on the down-arrow on the ComboBox supplied by the renderer, it will flicker slighty as it opens the dropdown, but then be interrupted and replaced by my editor component. This means I have to click it again to open the dropdown. This is the behaviour I want to avoid.

推荐答案

扩大我的评论:不，您不希望跨单元共享编辑器(讨厌的事情开始发生)，而是添加一个TreeCellListener来侦听更改潜在顾客(也就是关注的)选择路径，然后明确开始在该路径上进行编辑

Expanding my comment: no, you don't want to have your editor shared across cells (nasty thingies start to happen) Instead, add a TreeCellListener which listens for changes in the lead (aka: focused) selection path and then explicitly start editing on that path

    final JXTree tree = new JXTree();
    tree.setEditable(true);
    tree.expandAll();
    TreeSelectionListener l = new TreeSelectionListener() {

        @Override
        public void valueChanged(TreeSelectionEvent e) {
            final TreePath path = e.getNewLeadSelectionPath();
            if (path != null) {
                SwingUtilities.invokeLater(new Runnable() {
                    public void run() {
                        tree.startEditingAtPath(path);
                    }
                });
            }
        }

    };
    tree.addTreeSelectionListener(l);

真正使它起作用的技巧是通常的:将自定义反应包装到invokeLater中，以确保树的内部更新完成

The trick to really make it work is the usual: wrap the custom reaction into an invokeLater to be sure the tree's internal update is complete

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