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Danilo Vilarinho
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[zTree] Limit Drag and Drop
Question
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ztree
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zTree (O11)
Forge asset by Eduardo Luís

Hello!

How to limit Drag and Drop to only work at level 0 of the tree? The other levels are not possible to carry out the drag and drop.

                                                                                                        OK


I have this code implemented in ztreeSettingsCallback.ztreeSettingsCallback.beforeDrop

In which it limits the user to drag and drop to other nodes..

But the way it is implemented I can do the drag and drop. Like for example:


                                                                                                     NOK


What I want to do is to limit Drag and Drop only to the root node or level 0.


Thanks!

0
0
08 Feb 2021
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Danilo Vilarinho
Solution
//insert in ztreeSettingsCallback.ztreeSettingsCallback.beforeDrag


"function (treeId, treeNodes) {

    for (var y=0,l=treeNodes.length; y<l; y++) {
        var treeNode = treeNodes[y];
        var extraOptions = treeNode.extra.split(',');
        
        for (i=0;i<extraOptions.length;i++) {
            var option = extraOptions[i].split(':');

            if (option[0] == 'drag') {
                if (option[1] == 'false') return false;
            } 
                    else if (treeNode.parentTId) {
                    var parentNodeExtraOptions = getParentNode().extra.split(',');
                    
                    for (x=0;x<parentNodeExtraOptions.length;x++) {
                        var poption = parentNodeExtraOptions[x].split(':');
                        if (poption[0] == 'childDrag') {
                            if (poption[1] == 'false') return false;
                        }
                    }
                }
        }
    }
    return true;
}"
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0
10 Feb 2021
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