ExtJS5树拖放拖放深层复制 [英] ExtJS5 tree dragdrop deep copy

问题描述

在ExtJS5中，我有一个启用了拖放功能的TreePanel. 当我将带有子节点的节点从源树拖到目标树时，只会复制父节点.

In ExtJS5 I have a TreePanel with drag drop enabled. When I drag a node with children from a source tree to a target tree only the parent node is copied.

如果我尝试在'beforedrop'侦听器中进行深度克隆，它将失败并显示以下错误: Ext.data.Model.constructor():错误的模型构造函数参数2-会话"不是会话

If I try a deep clone in the 'beforedrop' listener, it fails with the following error: Ext.data.Model.constructor(): Bad Model constructor argument 2 - "session" is not a Session

该视图具有ViewController，但没有ViewModel.

The view has a viewcontroller but does not have a viewmodel.

视图中的树定义:

xtype: 'treepanel',
                    itemId: 'myProjectsTree',
                    rootVisible: false,
                    viewConfig: {
                        plugins: {
                            ptype: 'treeviewdragdrop',
                            enableDrag: false,
                            enableDrop: true
                        },
                        listeners: {                            
                            beforedrop: 'doDrop',....

在控制器中:

doDrop: function(dropNode, dragNode, overModel) {
        var node = dragNode.records[0]; 
        var clonedNode = node.copy('111', true);<--- failed here

我已经看到了在视图模型场景中定义的会话. 复制功能是否需要定义viewmodel会话? 有没有办法解决. ExtJS5中有错误吗?

I have seen sessions defined in a viewmodel scenario. Does the copy function need to have viewmodel session defined ? Is there any way around this. Is there a bug in ExtJS5.

任何帮助将不胜感激！

推荐答案

AFAIK EXT JS中存在与复制树节点有关的错误(

AFAIK there is bug in EXT JS related to copying tree nodes (EXTJS-13725). You should modify/override copy method in Ext.data.NodeInterface:

// copy: function(newId, deep) {
copy: function(newId, session, deep) {
    var me = this,
        result = me.callParent(arguments),
        len = me.childNodes ? me.childNodes.length : 0,
        i;


    if (deep) {
        for (i = 0; i < len; i++) {
            // result.appendChild(me.childNodes[i].copy(undefined, true));
            result.appendChild(me.childNodes[i].copy(undefined, session, true));
        }
    }
    return result;
}

基本上在原始代码中没有会话参数，而应该有会话参数.

Basically in original code there is no session argument, while there should be.

这篇关于ExtJS5树拖放拖放深层复制的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！