!function(t,e,s,i){var a="ontouchstart"in s,o=function(){var t=s.createElement("div"),i=s.documentElement;if(!("pointerEvents"in t.style))return!1;t.style.pointerEvents="auto",t.style.pointerEvents="x",i.appendChild(t);var a=e.getComputedStyle&&"auto"===e.getComputedStyle(t,"").pointerEvents;return i.removeChild(t),!!a}(),l={listNodeName:"ol",itemNodeName:"li",rootClass:"dd",listClass:"dd-list",itemClass:"dd-item",dragClass:"dd-dragel",handleClass:"dd-handle",collapsedClass:"dd-collapsed",placeClass:"dd-placeholder",noDragClass:"dd-nodrag",emptyClass:"dd-empty",expandBtnHTML:'<button data-action="expand" type="button">Expand</button>',collapseBtnHTML:'<button data-action="collapse" type="button">Collapse</button>',group:0,maxDepth:5,threshold:20};function n(e,i){this.w=t(s),this.el=t(e),this.options=t.extend({},l,i),this.init()}n.prototype={init:function(){var s=this;s.reset(),s.el.data("nestable-group",this.options.group),s.placeEl=t('<div class="'+s.options.placeClass+'"/>'),t.each(this.el.find(s.options.itemNodeName),function(e,i){s.setParent(t(i))}),s.el.on("click","button",function(e){if(!s.dragEl){var i=t(e.currentTarget),a=i.data("action"),o=i.parent(s.options.itemNodeName);"collapse"===a&&s.collapseItem(o),"expand"===a&&s.expandItem(o)}});var i=function(e){var i=t(e.target);if(!i.hasClass(s.options.handleClass)){if(i.closest("."+s.options.noDragClass).length)return;i=i.closest("."+s.options.handleClass)}i.length&&!s.dragEl&&(s.isTouch=/^touch/.test(e.type),s.isTouch&&1!==e.touches.length||(e.preventDefault(),s.dragStart(e.touches?e.touches[0]:e)))},o=function(t){s.dragEl&&(t.preventDefault(),s.dragMove(t.touches?t.touches[0]:t))},l=function(t){s.dragEl&&(t.preventDefault(),s.dragStop(t.touches?t.touches[0]:t))};a&&(s.el[0].addEventListener("touchstart",i,!1),e.addEventListener("touchmove",o,!1),e.addEventListener("touchend",l,!1),e.addEventListener("touchcancel",l,!1)),s.el.on("mousedown",i),s.w.on("mousemove",o),s.w.on("mouseup",l)},serialize:function(){var e=this;return step=function(s,i){var a=[];return s.children(e.options.itemNodeName).each(function(){var s=t(this),o=t.extend({},s.data()),l=s.children(e.options.listNodeName);l.length&&(o.children=step(l,i+1)),a.push(o)}),a},step(e.el.find(e.options.listNodeName).first(),0)},serialise:function(){return this.serialize()},reset:function(){this.mouse={offsetX:0,offsetY:0,startX:0,startY:0,lastX:0,lastY:0,nowX:0,nowY:0,distX:0,distY:0,dirAx:0,dirX:0,dirY:0,lastDirX:0,lastDirY:0,distAxX:0,distAxY:0},this.isTouch=!1,this.moving=!1,this.dragEl=null,this.dragRootEl=null,this.dragDepth=0,this.hasNewRoot=!1,this.pointEl=null},expandItem:function(t){t.removeClass(this.options.collapsedClass),t.children('[data-action="expand"]').hide(),t.children('[data-action="collapse"]').show(),t.children(this.options.listNodeName).show()},collapseItem:function(t){t.children(this.options.listNodeName).length&&(t.addClass(this.options.collapsedClass),t.children('[data-action="collapse"]').hide(),t.children('[data-action="expand"]').show(),t.children(this.options.listNodeName).hide())},expandAll:function(){var e=this;e.el.find(e.options.itemNodeName).each(function(){e.expandItem(t(this))})},collapseAll:function(){var e=this;e.el.find(e.options.itemNodeName).each(function(){e.collapseItem(t(this))})},setParent:function(e){e.children(this.options.listNodeName).length&&(e.prepend(t(this.options.expandBtnHTML)),e.prepend(t(this.options.collapseBtnHTML))),e.children('[data-action="expand"]').hide()},unsetParent:function(t){t.removeClass(this.options.collapsedClass),t.children("[data-action]").remove(),t.children(this.options.listNodeName).remove()},dragStart:function(e){var a=this.mouse,o=t(e.target),l=o.closest(this.options.itemNodeName);this.placeEl.css("height",l.height()),a.offsetX=e.offsetX!==i?e.offsetX:e.pageX-o.offset().left,a.offsetY=e.offsetY!==i?e.offsetY:e.pageY-o.offset().top,a.startX=a.lastX=e.pageX,a.startY=a.lastY=e.pageY,this.dragRootEl=this.el,this.dragEl=t(s.createElement(this.options.listNodeName)).addClass(this.options.listClass+" "+this.options.dragClass),this.dragEl.css("width",l.width()),l.after(this.placeEl),l[0].parentNode.removeChild(l[0]),l.appendTo(this.dragEl),t(s.body).append(this.dragEl),this.dragEl.css({left:e.pageX-a.offsetX,top:e.pageY-a.offsetY});var n,d,h=this.dragEl.find(this.options.itemNodeName);for(n=0;n<h.length;n++)(d=t(h[n]).parents(this.options.listNodeName).length)>this.dragDepth&&(this.dragDepth=d)},dragStop:function(t){var e=this.dragEl.children(this.options.itemNodeName).first();e[0].parentNode.removeChild(e[0]),this.placeEl.replaceWith(e),this.dragEl.remove(),this.el.trigger("change"),this.hasNewRoot&&this.dragRootEl.trigger("change"),this.reset()},dragMove:function(i){var a,l,n,d=this.options,h=this.mouse;this.dragEl.css({left:i.pageX-h.offsetX,top:i.pageY-h.offsetY}),h.lastX=h.nowX,h.lastY=h.nowY,h.nowX=i.pageX,h.nowY=i.pageY,h.distX=h.nowX-h.lastX,h.distY=h.nowY-h.lastY,h.lastDirX=h.dirX,h.lastDirY=h.dirY,h.dirX=0===h.distX?0:h.distX>0?1:-1,h.dirY=0===h.distY?0:h.distY>0?1:-1;var r=Math.abs(h.distX)>Math.abs(h.distY)?1:0;if(!h.moving)return h.dirAx=r,void(h.moving=!0);h.dirAx!==r?(h.distAxX=0,h.distAxY=0):(h.distAxX+=Math.abs(h.distX),0!==h.dirX&&h.dirX!==h.lastDirX&&(h.distAxX=0),h.distAxY+=Math.abs(h.distY),0!==h.dirY&&h.dirY!==h.lastDirY&&(h.distAxY=0)),h.dirAx=r,h.dirAx&&h.distAxX>=d.threshold&&(h.distAxX=0,n=this.placeEl.prev(d.itemNodeName),h.distX>0&&n.length&&!n.hasClass(d.collapsedClass)&&(a=n.find(d.listNodeName).last(),this.placeEl.parents(d.listNodeName).length+this.dragDepth<=d.maxDepth&&(a.length?(a=n.children(d.listNodeName).last()).append(this.placeEl):((a=t("<"+d.listNodeName+"/>").addClass(d.listClass)).append(this.placeEl),n.append(a),this.setParent(n)))),h.distX<0&&(this.placeEl.next(d.itemNodeName).length||(l=this.placeEl.parent(),this.placeEl.closest(d.itemNodeName).after(this.placeEl),l.children().length||this.unsetParent(l.parent()))));var p=!1;if(o||(this.dragEl[0].style.visibility="hidden"),this.pointEl=t(s.elementFromPoint(i.pageX-s.body.scrollLeft,i.pageY-(e.pageYOffset||s.documentElement.scrollTop))),o||(this.dragEl[0].style.visibility="visible"),this.pointEl.hasClass(d.handleClass)&&(this.pointEl=this.pointEl.parent(d.itemNodeName)),this.pointEl.hasClass(d.emptyClass))p=!0;else if(!this.pointEl.length||!this.pointEl.hasClass(d.itemClass))return;var c=this.pointEl.closest("."+d.rootClass),g=this.dragRootEl.data("nestable-id")!==c.data("nestable-id");if(!h.dirAx||g||p){if(g&&d.group!==c.data("nestable-group"))return;if(this.dragDepth-1+this.pointEl.parents(d.listNodeName).length>d.maxDepth)return;var f=i.pageY<this.pointEl.offset().top+this.pointEl.height()/2;l=this.placeEl.parent(),p?((a=t(s.createElement(d.listNodeName)).addClass(d.listClass)).append(this.placeEl),this.pointEl.replaceWith(a)):f?this.pointEl.before(this.placeEl):this.pointEl.after(this.placeEl),l.children().length||this.unsetParent(l.parent()),this.dragRootEl.find(d.itemNodeName).length||this.dragRootEl.append('<div class="'+d.emptyClass+'"/>'),g&&(this.dragRootEl=c,this.hasNewRoot=this.el[0]!==this.dragRootEl[0])}}},t.fn.nestable=function(e){var s=this;return this.each(function(){var i=t(this).data("nestable");i?"string"==typeof e&&"function"==typeof i[e]&&(s=i[e]()):(t(this).data("nestable",new n(this,e)),t(this).data("nestable-id",(new Date).getTime()))}),s||this}}(window.jQuery||window.Zepto,window,document);