/*!
 * Muuri v0.3.0
 * https://github.com/haltu/muuri
 * Copyright (c) 2015, Haltu Oy
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
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h},o.prototype.add=function(t,e){var i,n,s,a=this,l=[].concat(t),d=e||{},h=d.layout?d.layout:d.layout===r,f=[],u=a._items,g=!1;if(a._isDestroyed)return[];for(s=0;s<u.length;s++)(i=l.indexOf(u[s]._element))>-1&&l.splice(i,1);if(!l.length)return f;for(s=0;s<l.length;s++)n=new o.Item(a,l[s]),f[f.length]=n,n._isActive&&(g=!0,n._skipNextLayoutAnimation=!0);return S(u,f,d.index),a._emit("add",f.concat()),g&&h&&a.layout("instant"===h,typeof h===at?h:r),f},o.prototype.remove=function(t,e){var i,n,o,s=this,a=e||{},l=a.layout?a.layout:a.layout===r,d=!1;if(s._isDestroyed)return[];for(i=s.getItems(t),o=0;o<i.length;o++)n=i[o],n._isActive&&(d=!0),n._destroy(a.removeElements);return s._emit("remove",i.concat()),d&&l&&s.layout("instant"===l,typeof l===at?l:r),i},o.prototype.show=function(t,e){return this._isDestroyed?this:T(this,"show",t,e)},o.prototype.hide=function(t,e){return this._isDestroyed?this:T(this,"hide",t,e)},o.prototype.filter=function(t,e){var i,n,o,s=this,a=s._items,l=typeof 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i,n=this,o=n._element,s=n._items.concat();if(n._isDestroyed)return n;for(n._resizeHandler&&t.removeEventListener("resize",n._resizeHandler),i=0;i<s.length;i++)s[i]._destroy(e);return n._unsetSortGroups(),X(o,n._settings.containerClass),I(o,{height:""}),n._emit("destroy"),n._emitter.destroy(),ht[n._id]=r,n._isDestroyed=!0,n},o.prototype._getItem=function(t){var e,i,n,r,o=this;if(o._isDestroyed||!t)return o._items[0]||null;if(t instanceof s)return t._gridId===o._id?t:null;if(typeof t===dt)return e=t>-1?t:o._items.length+t,o._items[e]||null;for(i=null,r=0;r<o._items.length;r++)if(n=o._items[r],n._element===t){i=n;break}return i},o.prototype._emit=function(){return this._isDestroyed||this._emitter.emit.apply(this._emitter,arguments),this},o.prototype._refreshDimensions=function(){var t,e=this,i=this.getElement(),n=i.getBoundingClientRect(),r=["left","right","top","bottom"];for(e._width=rt.round(n.width),e._height=rt.round(n.height),e._left=rt.round(n.left),e._top=rt.round(n.top),e._padding={},e._border={},t=0;t<r.length;t++)e._padding[r[t]]=rt.round(A(i,"padding-"+r[t])),e._border[r[t]]=rt.round(A(i,"border-"+r[t]+"-width"));return e},o.prototype._setSortGroups=function(t){var e=this,i=[];return e._sortGroups=null,[].concat(t).forEach(function(t){"string"==typeof t&&i.indexOf(t)<0&&(i.push(t),ut[t]||(ut[t]=[]),ut[t].push(e._id))}),i.length&&(e._sortGroups=i),e},o.prototype._unsetSortGroups=function(){var t,e,i,n=this,r=n._sortGroups;if(r){for(e=0;e<r.length;e++)for(t=ut[r[e]],i=0;i<t.length;i++)if(t[i]===n._id){t.splice(i,1);break}n._sortGroups=null}return n},o.prototype._getSortConnections=function(t){var e,i,n,r,o=this,s=t?[o]:[],a=o._sortConnections;if(o._isDestroyed)return s;if(a&&a.length)for(r=0;r<a.length;r++)if((e=ut[a[r]])&&e.length)for(n=0;n<e.length;n++)(i=ht[e[n]])!==o&&s.indexOf(i)<0&&s.push(i);return s},s.prototype.getGrid=function(){return ht[this._gridId]},s.prototype.getElement=function(){return this._element},s.prototype.getWidth=function(){return this._width},s.prototype.getHeight=function(){return this._height},s.prototype.getMargin=function(){return{left:this._margin.left,right:this._margin.right,top:this._margin.top,bottom:this._margin.bottom}},s.prototype.getPosition=function(){return{left:this._left,top:this._top}},s.prototype.isActive=function(){return this._isActive},s.prototype.isVisible=function(){return!this._isHidden},s.prototype.isShowing=function(){return this._isShowing},s.prototype.isHiding=function(){return this._isHiding},s.prototype.isPositioning=function(){return this._isPositioning},s.prototype.isDragging=function(){return!!this._drag&&this._drag._data.isActive},s.prototype.isReleasing=function(){return this._release.isActive},s.prototype._stopLayout=function(t){var e=this;return e._isDestroyed||!e._isPositioning?e:(e._animate.stop(),X(e._element,e.getGrid()._settings.itemPositioningClass),e._isPositioning=!1,t&&K(e._layoutQueue,!0,e),e)},s.prototype._refreshDimensions=function(){var t,e,i,n,r,o,s=this;if(s._isDestroyed||s._isHidden)return s;for(t=s._element,i=["left","right","top","bottom"],r=s._margin=s._margin||{},o=0;o<4;o++)n=rt.round(A(t,"margin-"+i[o])),r[i[o]]=n>0?n:0;return e=t.getBoundingClientRect(),s._width=rt.round(e.width),s._height=rt.round(e.height),s._outerWidth=s._width+r.left+r.right,s._outerHeight=s._height+r.top+r.bottom,s},s.prototype._refreshSortData=function(){var t,e,i=this;return i._isDestroyed||(t={},e=i.getGrid()._settings.sortData,e&&it.keys(e).forEach(function(n){t[n]=e[n](i,i._element)}),i._sortData=t),i},s.prototype._layout=function(t,e){var 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r._isDestroyed?r:(i=r.getGrid(),n=i._settings,r._isShowing?t?(i._itemShowHandler.stop(r),K(s,!0,r),a&&(s[s.length]=a),i._itemShowHandler.start(r,t,function(){r._isShowing=!1,K(s,!1,r)})):a&&(s[s.length]=a):r._isHidden?(r._isHiding&&i._itemHideHandler.stop(r),r._isActive=r._isShowing=!0,r._isHidden=r._isHiding=!1,E(o,n.itemVisibleClass),X(o,n.itemHiddenClass),I(o,{display:"block"}),K(s,!0,r),a&&(s[s.length]=a),i._itemShowHandler.start(r,t,function(){r._isShowing=!1,K(s,!1,r)})):a&&a(!1,r),r)},s.prototype._hide=function(t,e){var i,n,r=this,o=r._element,s=r._visibilityQueue,a=typeof e===at?e:null;return r._isDestroyed?r:(i=r.getGrid(),n=i._settings,r._isHiding?t?(i._itemHideHandler.stop(r),K(s,!0,r),a&&(s[s.length]=a),i._itemHideHandler.start(r,t,function(){r._isHiding=!1,I(o,{display:"none"}),K(s,!1,r)})):a&&(s[s.length]=a):r._isHidden?a&&a(!1,r):(r._isShowing&&i._itemShowHandler.stop(r),r._isHidden=r._isHiding=!0,r._isActive=r._isShowing=!1,E(o,n.itemHiddenClass),X(o,n.itemVisibleClass),K(s,!0,r),typeof a===at&&(s[s.length]=a),i._itemHideHandler.start(r,t,function(){r._isHiding=!1,I(o,{display:"none"}),K(s,!1,r)})),r)},s.prototype._destroy=function(t){var e,i,n,o=this,s=o._element;return o._isDestroyed?o:(e=o.getGrid(),i=e._settings,n=e._items.indexOf(o),o._release.destroy(),o._migrate.destroy(),o._stopLayout(!0),e._itemShowHandler.stop(o),e._itemHideHandler.stop(o),o._drag&&o._drag.destroy(),o._animate.destroy(),o._animateChild.destroy(),s.removeAttribute("style"),o._child.removeAttribute("style"),K(o._visibilityQueue,!0,o),X(s,i.itemPositioningClass),X(s,i.itemDraggingClass),X(s,i.itemReleasingClass),X(s,i.itemClass),X(s,i.itemVisibleClass),X(s,i.itemHiddenClass),n>-1&&e._items.splice(n,1),t&&s.parentNode.removeChild(s),ft[o._id]=r,o._isActive=o._isPositioning=o._isHiding=o._isShowing=!1,o._isDestroyed=o._isHidden=!0,o)},h.prototype.on=function(t,e){if(this._isDestroyed)return this;var i=this._events[t]||[];return i[i.length]=e,this._events[t]=i,this},h.prototype.once=function(t,e){var i=this;return this.on(t,function n(){i.off(t,n),e.apply(null,arguments)})},h.prototype.off=function(t,e){if(this._isDestroyed)return this;for(var 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s.onFinish===at?s.onFinish:null,l={duration:s.duration||300,easing:s.easing||"ease",queue:r._queue};r._isAnimating&&r.stop(),t&&H(o,t),r._isAnimating=!0,a&&(l.complete=function(){a()}),i(o,e,l),i.Utilities.dequeue(o,r._queue)}},f.prototype.stop=function(){!this._isDestroyed&&this._isAnimating&&(this._isAnimating=!1,i(this._element,"stop",this._queue))},f.prototype.destroy=function(){this._isDestroyed||(this.stop(),this._element=null,this._isDestroyed=!0)},u.prototype.destroy=function(){var t=this;return t._isDestroyed||(t.stop(!0),t._isDestroyed=!0),t},u.prototype.getItem=function(){return ft[this._itemId]||null},u.prototype.start=function(t,e,i){var n,r,s,a,l,d,h,u,g,_,p,c,m,y,v=this;return v._isDestroyed?v:(n=v.getItem(),r=n.getElement(),s=n.isVisible(),a=n.getGrid(),l=a._settings,d=t._settings,h=t.getElement(),_=i||et.body,u=a._items.indexOf(n),null===(g=typeof 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e._isDestroyed||(t=e.getItem(),X(t.getElement(),t.getGrid()._settings.itemReleasingClass),e.isActive=!1,e.isPositioningStarted=!1,e.containerDiffX=0,e.containerDiffY=0),e},g.prototype.start=function(){var t,e,i,n=this;return n._isDestroyed||n.isActive?n:(t=n.getItem(),e=t.getElement(),i=t.getGrid(),n.isActive=!0,E(e,i._settings.itemReleasingClass),i._emit("dragReleaseStart",t),t._layout(!1),n)},g.prototype.stop=function(t){var e,i,n,r,o,s,a,l,d=this;return d._isDestroyed||!d.isActive?d:(e=d.getItem(),i=e.getElement(),n=e.getGrid(),r=n.getElement(),o=d.containerDiffX,s=d.containerDiffY,d.reset(),i.parentNode!==r&&(a=t?x(i,"x")-o:e._left,l=t?x(i,"y")-s:e._top,r.appendChild(i),I(i,{transform:"translateX("+a+"px) translateY("+l+"px)"})),t||n._emit("dragReleaseEnd",e),d)},_.defaultStartPredicate=function(e,i){var n,r,o,s=e.getElement(),a=e._drag,l=a.getGrid(),d=l._settings.dragStartPredicate||{},h=rt.abs(d.distance)||0,f=rt.abs(d.delay)||0,u="string"==typeof d.handle&&d.handle;if(!i.isFinal){if(u&&!pt(i.srcEvent.target,u))return!1;if(i.distance<h||i.deltaTime<f)return;return!0}n="a"===s.tagName.toLowerCase(),r=s.getAttribute("href"),o=s.getAttribute("target"),n&&r&&rt.abs(i.deltaX)<2&&rt.abs(i.deltaY)<2&&i.deltaTime<200&&(o&&"_self"!==o?t.open(r,o):t.location.href=r)},_.defaultSortPredicate=function(t){var e,i,n,r,o,s=t._drag,a=s._data,l=s.getGrid(),d=l._settings.dragSortPredicate||{},h=d.threshold||50,f=d.action||"move",u={width:t._width,height:t._height,left:rt.round(a.elementClientX),top:rt.round(a.elementClientY)},g=J(u,l,h),_=0,p=0,c=-1;if(!g)return!1;for(g===l?(u.left=rt.round(a.gridX)+t._margin.left,u.top=rt.round(a.gridY)+t._margin.top):(_=g._left+g._border.left+g._padding.left,p=g._top+g._border.top+g._padding.top),o=0;o<g._items.length;o++)n=g._items[o],n._isActive&&n!==t&&(i=!0,(r=W(u,{width:n._width,height:n._height,left:rt.round(n._left)+n._margin.left+_,top:rt.round(n._top)+n._margin.top+p}))>c&&(e=o,c=r));return c<h&&t.getGrid()!==g&&(e=i?-1:0,c=1/0),c>=h&&{grid:g,index:e,action:f}},_.prototype.destroy=function(){var t=this;return t._isDestroyed||(t.stop(),t._hammer.destroy(),t.getItem()._element.removeEventListener("dragstart",$,!1),t._isDestroyed=!0),t},_.prototype.getItem=function(){return ft[this._itemId]||null},_.prototype.getGrid=function(){return ht[this._gridId]||null},
_.prototype.reset=function(){var t=this,e=t._data;return e.isActive=!1,e.container=null,e.containingBlock=null,e.startEvent=null,e.currentEvent=null,e.scrollers=[],e.left=0,e.top=0,e.gridX=0,e.gridY=0,e.elementClientX=0,e.elementClientY=0,e.containerDiffX=0,e.containerDiffY=0,t},_.prototype.checkOverlap=function(){var t,e,i,n,r,o=this,s=o.getItem(),a=o._sortPredicate(s,o._data.currentEvent);return v(a)&&typeof a.index===dt?(t=s.getGrid(),e=t._items.indexOf(s),i=a.grid||t,n=a.index,r="swap"===a.action?"swap":"move",t===i?(n=p(t._items,n),e!==n&&(("swap"===r?c:m)(t._items,e,n),t._emit("move",{item:s,fromIndex:e,toIndex:n,action:r}),t.layout())):(s._gridId=i._id,o._isMigrating=s._gridId!==o._gridId,t._items.splice(e,1),S(i._items,s,n),n=i._items.indexOf(s),s._sortData=null,t._emit("send",{item:s,fromGrid:t,fromIndex:e,toGrid:i,toIndex:n}),i._emit("receive",{item:s,fromGrid:t,fromIndex:e,toGrid:i,toIndex:n}),t.layout(),i.layout()),o):o},_.prototype.finishMigration=function(){var t,e,i,n=this,r=n.getItem(),s=r._release,a=r.getElement(),l=r.getGrid(),d=l.getElement(),h=l._settings,u=h.dragContainer||d,g=n.getGrid()._settings,_=a.parentNode;return n._isMigrating=!1,n.destroy(),r._animate.destroy(),r._animateChild.destroy(),X(a,g.itemClass),X(a,g.itemVisibleClass),X(a,g.itemHiddenClass),E(a,h.itemClass),E(a,h.itemVisibleClass),r._animate=new o.ItemAnimate(r,a),r._animateChild=new o.ItemAnimate(r,r._child),r._isDefaultAnimate=r._animate instanceof f,u!==_&&(u.appendChild(a),i=G(_,u,!0),t=x(a,"x")+i.left,e=x(a,"y")+i.top,I(a,{transform:"translateX("+t+"px) translateY("+e+"px)"})),r._refreshDimensions()._refreshSortData(),r._child.removeAttribute("style"),l._itemShowHandler.start(r,!0),r._drag=h.dragEnabled?new o.ItemDrag(r):null,i=G(u,d,!0),s.containerDiffX=i.left,s.containerDiffY=i.top,s.start(),n},_.prototype.stop=function(){var t,e,i,n=this,r=n._data;if(!r.isActive)return n;if(n._isMigrating)return void n.finishMigration(r.currentEvent);for(t=n.getItem()._element,e=n.getGrid(),i=0;i<r.scrollers.length;i++)r.scrollers[i].removeEventListener("scroll",n._scrollHandler);return n._checkSortOverlap("cancel"),t.parentNode!==e._element&&(e._element.appendChild(t),I(t,{transform:"translateX("+r.gridX+"px) translateY("+r.gridY+"px)"})),X(t,e._settings.itemDraggingClass),n.reset(),n},_.prototype.onStart=function(t){var e,i,n,r,o,s,a,l,d,h,f,u,g,_,p=this,c=p.getItem();if(c._isActive){for(e=c._element,i=p.getGrid(),n=i._settings,r=p._data,o=c._release,c.isPositioning()&&c._stopLayout(!0),c._migrate.isActive&&c._migrate.stop(!0),c.isReleasing()&&o.reset(),r.isActive=!0,r.startEvent=r.currentEvent=t,s=x(e,"x"),a=x(e,"y"),l=i._element,r.container=d=n.dragContainer||l,r.containingBlock=h=k(d,!0),r.left=r.gridX=s,r.top=r.gridY=a,d!==l&&(g=e.parentNode===d,g||d.appendChild(e),f=G(h,l),r.containerDiffX=f.left,r.containerDiffY=f.top,g?(r.gridX=s-r.containerDiffX,r.gridY=a-r.containerDiffY):(r.left=s+r.containerDiffX,r.top=a+r.containerDiffY,I(e,{transform:"translateX("+r.left+"px) translateY("+r.top+"px)"}))),u=e.getBoundingClientRect(),r.elementClientX=u.left,r.elementClientY=u.top,r.scrollers=O(e),d!==l&&(r.scrollers=y(r.scrollers.concat(l).concat(O(l)))),_=0;_<r.scrollers.length;_++)r.scrollers[_].addEventListener("scroll",p._scrollHandler);return E(e,n.itemDraggingClass),i._emit("dragStart",c,t),p}},_.prototype.onMove=function(t){var e,i,n,r,o,s,a=this,l=a.getItem();return l._isActive?(e=l._element,i=a.getGrid(),n=i._settings,r=a._data,o=t.deltaX-r.currentEvent.deltaX,s=t.deltaY-r.currentEvent.deltaY,r.currentEvent=t,r.left+=o,r.top+=s,r.gridX+=o,r.gridY+=s,r.elementClientX+=o,r.elementClientY+=s,I(e,{transform:"translateX("+r.left+"px) translateY("+r.top+"px)"}),n.dragSort&&a._checkSortOverlap(),i._emit("dragMove",l,t),a):void a.stop()},_.prototype.onScroll=function(t){var e,i=this,n=i.getItem(),r=n._element,o=i.getGrid(),s=o._settings,a=i._data,l=o._element,d=r.getBoundingClientRect(),h=a.elementClientX-d.left,f=a.elementClientY-d.top;return a.container!==l&&(e=G(a.containingBlock,l),a.containerDiffX=e.left,a.containerDiffY=e.top),a.left+=h,a.top+=f,a.gridX=a.left-a.containerDiffX,a.gridY=a.top-a.containerDiffY,I(r,{transform:"translateX("+a.left+"px) translateY("+a.top+"px)"}),s.dragSort&&i._checkSortOverlap(),o._emit("dragScroll",n,t),i},_.prototype.onEnd=function(t){var e,i=this,n=i.getItem(),r=n._element,o=i.getGrid(),s=o._settings,a=i._data,l=n._release;if(!n._isActive)return void i.stop();for(s.dragSort&&i._checkSortOverlap("finish"),e=0;e<a.scrollers.length;e++)a.scrollers[e].removeEventListener("scroll",i._scrollHandler);return X(r,s.itemDraggingClass),l.containerDiffX=a.containerDiffX,l.containerDiffY=a.containerDiffY,i.reset(),o._emit("dragEnd",n,t),i._isMigrating?i.finishMigration():l.start(),i},o});