Using the following code, I could drag a JSTree node and drop it on to a div, and after that, the node would be deleted from the jstree. I am storing all the removed jstree nodes in mapOfRemovedNodes object, where node id is KEY and the node object itself is VALUE. Now, I want to move the node back to the JSTree. This is my complete code:
<!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>
Let's say I have to drag a node from the div and drop it anywhere on to the jstree. Here, How could I move the node from div to jstree and place it in proper hierarchy exactly under its parent node?
Got the solution!! Posting my answer, as this might be useful for others who are facing similar kind of issues.
<!doctype html>
<head>
<title>JSTree</title>
<link rel="stylesheet" href="css/style_jstree.css" />
<link href="fonts/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 arrayCollection;
$(function() {
arrayCollection = [
{"id": "animal", "parent": "#", "text": "Animals", "data": {"name": "Quick"}},
{"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", "data": {"lastName": "Silver"}},
{"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,
'responsive': true
}
},
"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) {
if (data.event.target.id === 'dragTarget') {
var jsonElement;
var nodeDragged = $(data.element).clone();
// $('#dragTarget').append(nodeDragged);
if (data.data.jstree && data.data.origin)
{
jsonElement = data.data.origin.get_node(data.element);
var id = jsonElement.id;
var icon = jsonElement.icon;
var parent = jsonElement.parent;
var parents = jsonElement.parents.join();
var text = jsonElement.text;
var divElement = '<div data-id=\'' + id + '\' data-text=\'' + text + '\' data-icon=\'' + icon + '\' data-parent=\'' + parent + '\' draggable=true><i class=\'' + icon + '\'></i> ' + text + '</div>';
$('#dragTarget').append(divElement);
arrayCollection = arrayCollection
.filter(function(el) {
return el.id !== id;
});
resfreshJSTree();
}
}
});
});
function resfreshJSTree() {
$('#jstree').jstree(true).settings.core.data = arrayCollection;
$('#jstree').jstree(true).refresh();
}
</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>
var draggedDivElement;
document.getElementById('dragTarget').addEventListener('dragstart', function(evt) {
console.log("The 'dragstart' event fired.");
var jsonElement = new Object();
var divElement = evt.target;
jsonElement.id = divElement.getAttribute('data-id');
jsonElement.text = divElement.getAttribute('data-text');
jsonElement.icon = divElement.getAttribute('data-icon');
jsonElement.parent = divElement.getAttribute('data-parent');
evt.dataTransfer.setData('jsonElement', JSON.stringify(jsonElement));
draggedDivElement = divElement;
}, 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.
arrayCollection.push(JSON.parse(evt.dataTransfer.getData('jsonElement')));
resfreshJSTree();
if(draggedDivElement!==null){
draggedDivElement.innerHTML = '';
}
}, false);
</script>
</body>
</html>
来源：https://stackoverflow.com/questions/26624813/how-to-drag-a-node-from-a-div-and-drop-it-on-to-a-jstree-jstree-version-3-0-4