Nestable (with autoscroll)

Drag & drop hierarchical list with mouse and touch compatibility (jQuery)

Autoscroll Nestable Demo

Drag & drop hierarchical list with mouse and touch compatibility (jQuery plugin).

This version of Nestable also has autoscroll built in to trigger scrolling when an element is dragged to the edge of a scroll parent.

Usage

Write your nested HTML lists like so:

<div class="dd">
    <ol class="dd-list">
        <li class="dd-item" data-id="1">
            <div class="dd-handle">Item 1</div>
        </li>
        <li class="dd-item" data-id="2">
            <div class="dd-handle">Item 2</div>
        </li>
        <li class="dd-item" data-id="3">
            <div class="dd-handle">Item 3</div>
            <ol class="dd-list">
                <li class="dd-item" data-id="4">
                    <div class="dd-handle">Item 4</div>
                </li>
                <li class="dd-item" data-id="5">
                    <div class="dd-handle">Item 5</div>
                </li>
            </ol>
        </li>
    </ol>
</div>

Then activate with jQuery like so:

$('.dd').nestable({ /* config options */ });

Events

The change event is fired when items are reordered.

$('.dd').on('change', function() {
    /* on change event */
});

Methods

You can get a serialised object with all data-* attributes for each item.

$('.dd').nestable('serialize');

The serialised JSON for the example above would be:

[{"id":1},{"id":2},{"id":3,"children":[{"id":4},{"id":5}]}]

Configuration

You can change the follow options:

• maxDepth number of levels an item can be nested (default 5)
• group group ID to allow dragging between lists (default 0)
• autoscroll A boolean to turn on scrolling for the nestable (default false)

These advanced config options are also available:

• listNodeName The HTML element to create for lists (default 'ol')
• itemNodeName The HTML element to create for list items (default 'li')
• rootClass The class of the root element .nestable() was used on (default 'dd')
• listClass The class of all list elements (default 'dd-list')
• itemClass The class of all list item elements (default 'dd-item')
• dragClass The class applied to the list element that is being dragged (default 'dd-dragel')
• handleClass The class of the content element inside each list item (default 'dd-handle')
• collapsedClass The class applied to lists that have been collapsed (default 'dd-collapsed')
• placeClass The class of the placeholder element (default 'dd-placeholder')
• emptyClass The class used for empty list placeholder elements (default 'dd-empty')
• expandBtnHTML The HTML text used to generate a list item expand button (default '<button data-action="expand">Expand></button>')
• collapseBtnHTML The HTML text used to generate a list item collapse button (default '<button data-action="collapse">Collapse</button>')
• axis For autoscroll, lock scrolling to specific axis set to 'x' or 'y' (default false)
• scrollSensitivity For autoscroll, distance from top and bottom of parent to trigger scroll (default 70)
• scrollSpeed For autoscroll, number of pixels to scroll each time (default 3)
• scrollDelay For autoscroll, millisecond delay between scrolls (default 15)

Inspect the Nestable Demo for guidance.

Change Log

15th October 2012

• Merge for Zepto.js support
• Merge fix for remove/detach items

27th June 2012

• Added maxDepth option (default to 5)
• Added empty placeholder
• Updated CSS class structure with options for listClass and itemClass.
• Fixed to allow drag and drop between multiple Nestable instances (off by default).
• Added group option to enabled the above.

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Author: David Bushell http://dbushell.com @dbushell

Copyright © 2012 David Bushell | BSD & MIT license