【发布时间】：2014-10-29 07:27:46
【问题描述】：
使用下面的代码，我可以将一个 JSTree 节点拖放到一个 div 上，之后，该节点将从 jstree 中删除。 我将所有已删除的 jstree 节点存储在 mapOfRemovedNodes 对象中，其中节点 ID 为 KEY，节点对象本身为 VALUE。 现在，我想将节点移回 JSTree。 这是我的完整代码：
<!doctype html>
<head>
<title>JSTree</title>
<link rel="stylesheet" href="css/style.css" />
<link href="//maxcdn.bootstrapcdn.com/font-awesome/4.2.0/css/font-awesome.min.css" rel="stylesheet">
<script src="js/jquery.js"></script>
<script src="js/jstree.js"></script>
<script>
var mapOfRemovedNodes = new Object();
$(function() {
var arrayCollection = [
{"id": "animal", "parent": "#", "text": "Animals"},
{"id": "device", "parent": "#", "text": "Devices"},
{"id": "dog", "parent": "animal", "text": "Dogs", "icon": "fa fa-file-o"},
{"id": "lion", "parent": "animal", "text": "Lions", "icon": "fa fa-file-o"},
{"id": "mobile", "parent": "device", "text": "Mobile Phones", "icon": "fa fa-file-o"},
{"id": "lappy", "parent": "device", "text": "Laptops", "icon": "fa fa-file-o"},
{"id": "daburman", "parent": "dog", "text": "Dabur Man", "icon": "fa fa-long-arrow-right"},
{"id": "Dalmation", "parent": "dog", "text": "Dalmatian", "icon": "fa fa-long-arrow-right"},
{"id": "african", "parent": "lion", "text": "African Lion", "icon": "fa fa-long-arrow-right"},
{"id": "indian", "parent": "lion", "text": "Indian Lion", "icon": "fa fa-long-arrow-right"},
{"id": "apple", "parent": "mobile", "text": "Apple IPhone 6", "icon": "fa fa-long-arrow-right"},
{"id": "samsung", "parent": "mobile", "text": "Samsung Note II", "icon": "fa fa-long-arrow-right"},
{"id": "lenevo", "parent": "lappy", "text": "Lenevo", "icon": "fa fa-long-arrow-right"},
{"id": "hp", "parent": "lappy", "text": "HP", "icon": "fa fa-long-arrow-right"}
];
$('#jstree').jstree({
"plugins": ["dnd", "types"],
'core': {
'check_callback': true,
'data': arrayCollection,
'themes': {
'dots': false
}
},
"types": {
"root": {
"icon": "/static/3.0.8/assets/images/tree_icon.png",
"valid_children": ["default"]
},
"default": {
"valid_children": ["default", "file"]
},
"file": {
"icon": "fa fa-file-o",
"valid_children": []
}
}
});
$(document).on('dnd_start.vakata', function(e, data) {
console.log('Started dragging node from jstree');
});
$(document).on('dnd_move.vakata', function(e, data) {
console.log('Moving node from jstree to div');
});
$(document).on('dnd_stop.vakata', function(e, data) {
console.log('Dropped the node on to the div');
if (data.event.target.id === 'dragTarget') {
var nodeDragged = $(data.element).clone();
$('#dragTarget').append(nodeDragged);
var ref = $('#jstree').jstree(true);
var nodeToDelete = $('#' + data.data.nodes[0]);
mapOfRemovedNodes[data.data.nodes[0]] = nodeToDelete.clone(); // including the clone of the node in a map
ref.delete_node(nodeToDelete); // deleting the node on jstree after dropping it on to the div
console.log(getRemovedNode(data.data.nodes[0]));
}
});
});
function getRemovedNode(key) {
return mapOfRemovedNodes[key];
}
</script>
</head>
<body>
<div id="jstree" style="float: left; width: 500px"></div>
<div id="dragTarget" style="float: left; width: 750px; height: 750px; background-color: skyblue; text-align: center">
<h3>Dropped Items</h3>
</div>
<script>
document.getElementById('dragTarget').addEventListener('dragstart', function(evt) {
console.log("The 'dragstart' event fired.");
console.log(evt.target);
evt.dataTransfer.setData('text', evt.target.textContent);
}, false);
document.addEventListener("dragover", function(evt) {
console.log("The 'dragover' event fired.");
evt.preventDefault(); // Prevent the default behavior in order to enable dropping.
}, false);
document.getElementById('jstree').addEventListener("drop", function(evt) {
console.log("The 'drop' event on jsTree fired.");
evt.preventDefault(); // Prevent the default action to open as link for some elements.
console.log(evt);
//
// To do: How to drop the node (dragged from div) to jstree structure??
//
}, false);
</script>
</body>
</html>
假设我必须将一个节点从 div 拖放到 jstree 的任何位置。 在这里，如何将节点从 div 移动到 jstree 并将其放置在其父节点下的适当层次结构中？
【问题讨论】：