/*!
 * Nestable jQuery Plugin - Copyright (c) 2012 David Bushell - http://dbushell.com/
 * Dual-licensed under the BSD or MIT licenses
 */
!function(a,b,c,d){function e(c,d){this.w=a(b),this.el=a(c),this.options=a.extend({},j,d),this.init()}var f=("ontouchstart"in c.documentElement,function(){var a=c.createElement("div"),d=c.documentElement;if(!("pointerEvents"in a.style))return!1;a.style.pointerEvents="auto",a.style.pointerEvents="x",d.appendChild(a);var e=b.getComputedStyle&&"auto"===b.getComputedStyle(a,"").pointerEvents;return d.removeChild(a),!!e}()),g="mousedown touchstart MSPointerDown pointerdown",h="mousemove touchmove MSPointerMove pointermove",i="mouseup touchend touchcancel MSPointerUp MSPointerCancel pointerup pointercancel",j={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};e.prototype={init:function(){var b=this;b.reset(),b.el.data("nestable-group",this.options.group),b.placeEl=a('<div class="'+b.options.placeClass+'"/>'),a.each(this.el.find(b.options.itemNodeName),function(c,d){b.setParent(a(d))}),b.el.on("click","button",function(c){if(!(b.dragEl||"button"in c&&0!==c.button)){var d=a(c.currentTarget),e=d.data("action"),f=d.parent(b.options.itemNodeName);"collapse"===e&&b.collapseItem(f),"expand"===e&&b.expandItem(f)}});var c=function(c){c=c.originalEvent;var d=a(c.target);if(!d.hasClass(b.options.handleClass)){if(d.closest("."+b.options.noDragClass).length)return;d=d.closest("."+b.options.handleClass)}!d.length||b.dragEl||"button"in c&&0!==c.button||"touches"in c&&1!==c.touches.length||(c.preventDefault(),b.dragStart("touches"in c?c.touches[0]:c))},d=function(a){b.dragEl&&(a=a.originalEvent,a.preventDefault(),b.dragMove("touches"in a?a.touches[0]:a))},e=function(a){b.dragEl&&(a=a.originalEvent,a.preventDefault(),b.dragStop("touches"in a?a.touches[0]:a))};b.el.on(g,c),b.w.on(h,d),b.w.on(i,e)},serialize:function(){var b,c=0,d=this;return step=function(b,c){var e=[],f=b.children(d.options.itemNodeName);return f.each(function(){var b=a(this),f=a.extend({},b.data()),g=b.children(d.options.listNodeName);g.length&&(f.children=step(g,c+1)),e.push(f)}),e},b=step(d.el.find(d.options.listNodeName).first(),c)},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.moving=!1,this.dragEl=null,this.dragRootEl=null,this.dragDepth=0,this.hasNewRoot=!1,this.pointEl=null},expandItem:function(a){a.removeClass(this.options.collapsedClass),a.children('[data-action="expand"]').hide(),a.children('[data-action="collapse"]').show(),a.children(this.options.listNodeName).show()},collapseItem:function(a){var b=a.children(this.options.listNodeName);b.length&&(a.addClass(this.options.collapsedClass),a.children('[data-action="collapse"]').hide(),a.children('[data-action="expand"]').show(),a.children(this.options.listNodeName).hide())},expandAll:function(){var b=this;b.el.find(b.options.itemNodeName).each(function(){b.expandItem(a(this))})},collapseAll:function(){var b=this;b.el.find(b.options.itemNodeName).each(function(){b.collapseItem(a(this))})},setParent:function(b){b.children(this.options.listNodeName).length&&(b.prepend(a(this.options.expandBtnHTML)),b.prepend(a(this.options.collapseBtnHTML))),b.children('[data-action="expand"]').hide()},unsetParent:function(a){a.removeClass(this.options.collapsedClass),a.children("[data-action]").remove(),a.children(this.options.listNodeName).remove()},dragStart:function(b){var e=this.mouse,f=a(b.target),g=f.closest(this.options.itemNodeName);this.placeEl.css("height",g.height()),e.offsetX=b.offsetX!==d?b.offsetX:b.pageX-f.offset().left,e.offsetY=b.offsetY!==d?b.offsetY:b.pageY-f.offset().top,e.startX=e.lastX=b.pageX,e.startY=e.lastY=b.pageY,this.dragRootEl=this.el,this.dragEl=a(c.createElement(this.options.listNodeName)).addClass(this.options.listClass+" "+this.options.dragClass),this.dragEl.css("width",g.width()),g.after(this.placeEl),g[0].parentNode.removeChild(g[0]),g.appendTo(this.dragEl),a(c.body).append(this.dragEl),this.dragEl.css({left:b.pageX-e.offsetX,top:b.pageY-e.offsetY});var h,i,j=this.dragEl.find(this.options.itemNodeName);for(h=0;h<j.length;h++)i=a(j[h]).parents(this.options.listNodeName).length,i>this.dragDepth&&(this.dragDepth=i)},dragStop:function(a){var b=this.dragEl.children(this.options.itemNodeName).first();b[0].parentNode.removeChild(b[0]),this.placeEl.replaceWith(b),this.dragEl.remove(),this.el.trigger("change"),this.hasNewRoot&&this.dragRootEl.trigger("change"),this.reset()},dragMove:function(d){var e,g,h,i,j,k=this.options,l=this.mouse;this.dragEl.css({left:d.pageX-l.offsetX,top:d.pageY-l.offsetY}),l.lastX=l.nowX,l.lastY=l.nowY,l.nowX=d.pageX,l.nowY=d.pageY,l.distX=l.nowX-l.lastX,l.distY=l.nowY-l.lastY,l.lastDirX=l.dirX,l.lastDirY=l.dirY,l.dirX=0===l.distX?0:l.distX>0?1:-1,l.dirY=0===l.distY?0:l.distY>0?1:-1;var m=Math.abs(l.distX)>Math.abs(l.distY)?1:0;if(!l.moving)return l.dirAx=m,void(l.moving=!0);l.dirAx!==m?(l.distAxX=0,l.distAxY=0):(l.distAxX+=Math.abs(l.distX),0!==l.dirX&&l.dirX!==l.lastDirX&&(l.distAxX=0),l.distAxY+=Math.abs(l.distY),0!==l.dirY&&l.dirY!==l.lastDirY&&(l.distAxY=0)),l.dirAx=m,l.dirAx&&l.distAxX>=k.threshold&&(l.distAxX=0,h=this.placeEl.prev(k.itemNodeName),l.distX>0&&h.length&&!h.hasClass(k.collapsedClass)&&(e=h.find(k.listNodeName).last(),j=this.placeEl.parents(k.listNodeName).length,j+this.dragDepth<=k.maxDepth&&(e.length?(e=h.children(k.listNodeName).last(),e.append(this.placeEl)):(e=a("<"+k.listNodeName+"/>").addClass(k.listClass),e.append(this.placeEl),h.append(e),this.setParent(h)))),l.distX<0&&(i=this.placeEl.next(k.itemNodeName),i.length||(g=this.placeEl.parent(),this.placeEl.closest(k.itemNodeName).after(this.placeEl),g.children().length||this.unsetParent(g.parent()))));var n=!1;if(f||(this.dragEl[0].style.visibility="hidden"),this.pointEl=a(c.elementFromPoint(d.pageX-c.body.scrollLeft,d.pageY-(b.pageYOffset||c.documentElement.scrollTop))),f||(this.dragEl[0].style.visibility="visible"),this.pointEl.hasClass(k.handleClass)&&(this.pointEl=this.pointEl.parent(k.itemNodeName)),this.pointEl.hasClass(k.emptyClass))n=!0;else if(!this.pointEl.length||!this.pointEl.hasClass(k.itemClass))return;var o=this.pointEl.closest("."+k.rootClass),p=this.dragRootEl.data("nestable-id")!==o.data("nestable-id");if(!l.dirAx||p||n){if(p&&k.group!==o.data("nestable-group"))return;if(j=this.dragDepth-1+this.pointEl.parents(k.listNodeName).length,j>k.maxDepth)return;var q=d.pageY<this.pointEl.offset().top+this.pointEl.height()/2;g=this.placeEl.parent(),n?(e=a(c.createElement(k.listNodeName)).addClass(k.listClass),e.append(this.placeEl),this.pointEl.replaceWith(e)):q?this.pointEl.before(this.placeEl):this.pointEl.after(this.placeEl),g.children().length||this.unsetParent(g.parent()),this.dragRootEl.find(k.itemNodeName).length||this.dragRootEl.append('<div class="'+k.emptyClass+'"/>'),p&&(this.dragRootEl=o,this.hasNewRoot=this.el[0]!==this.dragRootEl[0])}}},a.fn.nestable=function(b){var c=this,d=this;return c.each(function(){var c=a(this).data("nestable");c?"string"==typeof b&&"function"==typeof c[b]&&(d=c[b]()):(a(this).data("nestable",new e(this,b)),a(this).data("nestable-id",(new Date).getTime()))}),d||c}}(window.jQuery||window.Zepto,window,document);