Example: Using Drag Plugins with Delegate

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Adding Plugins to a Delegate instance

DD.Delegate provides a reference to the dd instance so you can plug into the underlying dd with del.dd.plug(). This allows you to use DD plugins on a Delegate instance, as well as provides the ability to write plugins for Delegate itself.

Constrain Plugin

Here is how you would add the constrain plugin to a DD.Delegate instance.

YUI().use('dd-delegate', 'dd-constrain', function(Y) {
 var del = new Y.DD.Delegate({
 container: '#demo',
 nodes: 'li'
 });
 del.dd.plug(Y.Plugin.DDConstrained, {
 constrain2node: '#play'
 });
});

DDProxy Plugin

Here is how you would add the dd-proxy plugin to a DD.Delegate instance.

YUI().use('dd-delegate', 'dd-proxy', function(Y) {
 var del = new Y.DD.Delegate({
 container: '#demo',
 nodes: 'li'
 });
 del.dd.plug(Y.Plugin.DDProxy, {
 moveOnEnd: false,
 cloneNode: true
 });
});

Full Example Source

HTML

<div id="play">
 <div id="demo">
 <ul>
 <li>Item #1</li>
 <li>Item #2</li>
 <li>Item #3</li>
 <li>Item #4</li>
 <li>Item #5</li>
 <li>Item #6</li>
 <li>Item #7</li>
 <li>Item #8</li>
 <li>Item #9</li>
 <li>Item #10</li>
 </ul>
 </div>
 
 <div id="drop">Drop on me</div>
</div>

CSS

#demo {
}
#demo ul li {
 border: 1px solid black;
 background-color: #8DD5E7;
 cursor: move;
 margin: 3px;
 list-style-type: none;
 z-index: 2;
 width: 200px;
 height: 20px;
 padding: 2px;
 zoom: 1;
}
#play {
 border: 1px solid black;
 zoom: 1;
 padding: 2em;
}
#drop {
 border: 1px solid black;
 background-color: #eee;
 height: 50px;
 width: 200px;
 float: right;
 bottom: 50px;
 position: relative;
}
#drop strong {
 font-weight: bold;
}
#drop.yui3-dd-drop-over {
 background-color: #ccc;
}
#example-canvas {
 position: static;
}

Javascript

YUI().use('dd-delegate', 'dd-drop-plugin', 'dd-constrain', 'dd-proxy', function(Y) {
 var del = new Y.DD.Delegate({
 container: '#demo',
 nodes: 'li'
 });
 del.on('drag:start', function(e) {
 e.target.get('node').setStyle('opacity', '.5');
 });
 del.on('drag:end', function(e) {
 e.target.get('node').setStyle('opacity', '1');
 });
 
 del.dd.plug(Y.Plugin.DDConstrained, {
 constrain2node: '#play'
 });
 del.dd.plug(Y.Plugin.DDProxy, {
 moveOnEnd: false,
 cloneNode: true
 });
 var drop = Y.one('#drop').plug(Y.Plugin.Drop);
 drop.drop.on('drop:hit', function(e) {
 drop.set('innerHTML', 'You dropped: <strong>' + e.drag.get('node').get('innerHTML') + '</strong>');
 });
 
});