Jquery Nestable

http://dbushell.github.io/Nestable/

by B L Praveen

HTML

<link rel="stylesheet" href="http://fontawesome.io/assets/font-awesome/css/font-awesome.css">
<a href="#" id="add-item">Add Item</a>
<div class="dd" id="nestable3">
            <ol class="dd-list">
                <li class="dd-item dd3-item" data-id="13">
                    <div class="dd-handle dd3-handle">Drag</div><div class="dd-col"><span class="toggle status-expanded">-</span></div><div class="dd3-content">Item 13</div>
                </li>
                <li class="dd-item dd3-item" data-id="14">
                    <div class="dd-handle dd3-handle">Drag</div><div class="dd-col"><span class="toggle status-expanded">-</span></div><div class="dd3-content">Item 14</div>
                </li>
                <li class="dd-item dd3-item" data-id="15">
                    <div class="dd-handle dd3-handle">Drag</div><div class="dd-col"><span class="toggle status-expanded">-</span></div><div class="dd3-content">Item 15</div>
                    <ol class="dd-list">
                        <li class="dd-item dd3-item" data-id="16">
                            <div class="dd-handle dd3-handle">Drag</div><div class="dd-col"><span class="toggle status-expanded">-</span></div><div class="dd3-content">Item 16</div>
                        </li>
                        <li class="dd-item dd3-item" data-id="17">
                            <div class="dd-handle dd3-handle">Drag</div><div class="dd-col"><span class="toggle status-expanded">-</span></div><div class="dd3-content">Item 17</div>
                        </li>
                        <li class="dd-item dd3-item" data-id="18">
                            <div class="dd-handle dd3-handle">Drag</div><div class="dd-col"><span class="toggle status-expanded">-</span></div><div class="dd3-content">Item 18</div>
                        </li>
                    </ol>
                </li>
            </ol>
        </div>

CSS

/**
 * Nestable
 */

.dd { position: relative; display: block; margin: 0; padding: 0; max-width: 600px; list-style: none; font-size: 13px; line-height: 20px; }

.dd-list { display: block; position: relative; margin: 0; padding: 0; list-style: none; }
.dd-list .dd-list { padding-left: 30px; }
.dd-collapsed .dd-list { display: none; }

.dd-item,
.dd-empty,
.dd-placeholder { display: block; position: relative; margin: 0; padding: 0; min-height: 20px; font-size: 13px; line-height: 20px; }

.dd-handle { display: block; height: 30px; margin: 5px 0; padding: 5px 10px; color: #333; text-decoration: none; font-weight: bold; border: 1px solid #ccc;
    background: #fafafa;
    background: -webkit-linear-gradient(top, #fafafa 0%, #eee 100%);
    background:    -moz-linear-gradient(top, #fafafa 0%, #eee 100%);
    background:         linear-gradient(top, #fafafa 0%, #eee 100%);
    -webkit-border-radius: 3px;
            border-radius: 3px;
    box-sizing: border-box; -moz-box-sizing: border-box;
}
.dd-handle:hover { color: #2ea8e5; background: #fff; }

.dd-item > button { display: block; position: relative; cursor: pointer; float: left; width: 25px; height: 20px; margin: 5px 0; padding: 0; text-indent: 100%; white-space: nowrap; overflow: hidden; border: 0; background: transparent; font-size: 12px; line-height: 1; text-align: center; font-weight: bold; }
.dd-item > button:before { content: '+'; display: block; position: absolute; width: 100%; text-align: center; text-indent: 0; }
.dd-item > button[data-action="collapse"]:before { content: '-'; }

.dd-placeholder,
.dd-empty { margin: 5px 0; padding: 0; min-height: 30px; background: #f2fbff; border: 1px dashed #b6bcbf; box-sizing: border-box; -moz-box-sizing: border-box; }
.dd-empty { border: 1px dashed #bbb; min-height: 100px; background-color: #e5e5e5;
    background-image: -webkit-linear-gradient(45deg, #fff 25%, transparent 25%, transparent 75%, #fff 75%, #fff), 
                      -webkit-linear-gradient(45deg, #fff...

JavaScript

$('#add-item').click(function() {
    console.log('asd');
        nestlist.data("nestable").addItem('<div class="dd-handle dd3-handle">Drag</div><div class="dd-col"><span class="toggle status-expanded">-</span></div><div class="dd3-content">item10</div>');
     
});


    
    $('.dd-col').on('click', function(e)
    {
        var target = $(e.target),
            action = target.data('action'),
            li = $(target).closest('li');
     if($(target).find('.toggle').hasClass('status-expanded')) {

         nestlist.data("nestable").collapseItem(li);
         $(target).find('.toggle').removeClass('status-expanded').addClass('status-collapsed');
     } else {
         $(target).find('.toggle').removeClass('status-collapsed').addClass('status-expanded');
        nestlist.data("nestable").expandItem(li);
     }
        if (action === 'expand-all') {
            $('.dd').nestable('expandAll');
        }
        if (action === 'collapse-all') {
            $('.dd').nestable('collapseAll');
        }
    });

/*!
 * Nestable jQuery Plugin - Copyright (c) 2012 David Bushell - http://dbushell.com/
 * Dual-licensed under the BSD or MIT licenses
 */
;(function($, window, document, undefined)
{
    var hasTouch = 'ontouchstart' in window;

    /**
     * Detect CSS pointer-events property
     * events are normally disabled on the dragging element to avoid conflicts
     * https://github.com/ausi/Feature-detection-technique-for-pointer-events/blob/master/modernizr-pointerevents.js
     */
    var hasPointerEvents = (function()
    {
        var el    = document.createElement('div'),
            docEl = document.documentElement;
        if (!('pointerEvents' in el.style)) {
            return false;
        }
        el.style.pointerEvents = 'auto';
        el.style.pointerEvents = 'x';
        docEl.appendChild(el);
        var supports = window.getComputedStyle && window.getComputedStyle(el, '').pointerEvents === 'auto';
        docEl.removeChild(el);
        return...