防止节点掉落到Primefaces树中某些类型的节点上 [英] Prevent nodes to be dropped on nodes of certain type in Primefaces tree

问题描述

我有一棵树，我的代码是：

I have a tree and my code is:

<p:tree id="tree_newCms_pl"
        value="#..............."
        var="item"
        animate="true"
        selectionMode="single" selection=".............."
        dynamic="true"
        draggable="true" droppable="true">

我只想允许更改节点的位置，并防止将其放置到其他父节点上。我该如何解决？

I only want to allow to change the position of a node, and prevent it from being dropped onto a different parent. How can I fix this?

推荐答案

可以使用属性来完成。 dropRestrict = sibling 。

This can be done using an attribute. dropRestrict="sibling".

<p:tree id="tree_newCms_pl"
        value="#..............."
        var="item"
        animate="true"
        selectionMode="single" selection=".............."
        dynamic="true"
        draggable="true" droppable="true" dropRestrict="sibling">

根据文档

定义父子限制当节点被删除时，有效值
为none（默认值）且为兄弟。

Defines parent-child restrictions when a node is dropped valid values are none (default) and sibling.

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