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# Nestable

## PLEASE NOTE

I cannot provide any support or guidance beyond this README. If this code helps you that's great but I have no plans to develop Nestable beyond this demo (it's not a final product and has limited functionality). I cannot reply to any requests for help.

### Drag & drop hierarchical list with mouse and touch compatibility (jQuery / Zepto plugin)

Try Nestable Demo

Nestable is an experimental example and not under active development. If it suits your requirements feel free to expand upon it!

## 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`)

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>'`)

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.

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

Copyright © 2012 David Bushell | BSD & MIT license