The Sortable Utility allows you to create a sortable list from a container and a group of children. It also allows you to join lists together in various ways.
Getting Started
To include the source files for Sortable and its dependencies, first load the YUI seed file if you haven't already loaded it.
<script src="http://yui.yahooapis.com/3.8.0/build/yui/yui-min.js"></script>
Next, create a new YUI instance for your application and populate it with the
modules you need by specifying them as arguments to the YUI().use()
method.
YUI will automatically load any dependencies required by the modules you
specify.
<script> // Create a new YUI instance and populate it with the required modules. YUI().use('sortable', function (Y) { // Sortable is available and ready for use. Add implementation // code here. }); </script>
For more information on creating YUI instances and on the
use()
method, see the
documentation for the YUI Global Object.
A Basic Sortable List
The most common use case of a sortable list is an Unordered List.
Below is the sample markup used to create a container
and a list.
<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>
To turn this into a sortable list, you just need to create the Sortable
object and tell it the container
and the nodes
.
The nodes
can be any selector string that matches a child of the container
. For performance reasons you will want to make the container
an element that is as close to the nodes
as possible. The farther away in the DOM the container
is from the nodes
the worse the performance will be.
YUI().use('sortable', function(Y) { var sortable = new Y.Sortable({ container: '#demo', nodes: 'li', opacity: '.1' }); });
Note: Sortable
does not auto find your drop target items, if you change the nodes
under the hood (add or remove) you need to call sortable.sync()
to manage them.
Events
Sortable uses DD.Delegate
under the hood to handle the Drag and Drop operations. It sets itself as the bubbleTarget
of the Delegate
instance, so all DD
-related events are bubbled to it.
For more information on DD
related events, see the events section on the Drag and Drop page.
Joining Lists
By default, a Sortable
list can only interact with itself; you can't drag from one Sortable
list to another. But a Sortable
instance can be configured to be joined with another Sortable
instance.
There are four ways a Sortable
list can be joined: inner
, outer
, full
and none
(none
is the default).
Join Type | Description |
---|---|
inner |
Items in the joined list can be moved into the main list but items in the main list can not be moved to the joined list. |
outer |
Items in the main list can be moved into the joined list but items in the joined list can not be moved to the main list. |
full |
All items in both lists can be moved into and out of any other joined list. |
none |
The default join type. No interaction with other lists. |
YUI().use('sortable', function(Y) { var sortable1 = new Y.Sortable({ container: '#demo1', nodes: 'li', opacity: '.1' }); var sortable2 = new Y.Sortable({ container: '#demo2', nodes: 'li', opacity: '.1' }); sortable1.join(sortable2, 'full'); });
You can also join multiple lists in multiple ways to get the experience you are looking for.
YUI().use('sortable', function(Y) { var sortable1 = new Y.Sortable({ container: '#demo1', nodes: 'li', opacity: '.1' }); var sortable2 = new Y.Sortable({ container: '#demo2', nodes: 'li', opacity: '.1' }); var sortable3 = new Y.Sortable({ container: '#demo3', nodes: 'li', opacity: '.1' }); sortable1.join(sortable2, 'inner'); sortable2.join(sortable3, 'outer'); sortable3.join(sortable1, 'full'); sortable3.join(sortable2, 'full'); });
Using DD Plugins
The DD.Delegate
object bound to a Sortable
instance is exposed to allow you to easily attach plugins to a Sortable
instance.
The Sortable
instance has a delegate
namespace, which is a reference to the internal DD.Delegate
instance.
var sortable = new Y.Sortable({ container: '#demo', nodes: 'li' }); sortable.delegate.dd.plug(SomeDDPlugin);