// jQuery List DragSort v0.4.2
// License: http://dragsort.codeplex.com/license
(function(b){b.fn.dragsort=function(k){var d=b.extend({},b.fn.dragsort.defaults,k),g=[],a=null,j=null;this.selector&&b("head").append("<style type='text/css'>"+(this.selector.split(",").join(" "+d.dragSelector+",")+" "+d.dragSelector)+" { cursor: pointer; }</style>");this.each(function(k,i){b(i).is("table")&&b(i).children().size()==1&&b(i).children().is("tbody")&&(i=b(i).children().get(0));var m={draggedItem:null,placeHolderItem:null,pos:null,offset:null,offsetLimit:null,scroll:null,container:i,init:function(){b(this.container).attr("data-listIdx", k).mousedown(this.grabItem).find(d.dragSelector).css("cursor","pointer");b(this.container).children(d.itemSelector).each(function(a){b(this).attr("data-itemIdx",a)})},grabItem:function(e){if(!(e.which!=1||b(e.target).is(d.dragSelectorExclude))){for(var c=e.target;!b(c).is("[data-listIdx='"+b(this).attr("data-listIdx")+"'] "+d.dragSelector);){if(c==this)return;c=c.parentNode}a!=null&&a.draggedItem!=null&&a.dropItem();b(e.target).css("cursor","move");a=g[b(this).attr("data-listIdx")];a.draggedItem= b(c).closest(d.itemSelector);c=parseInt(a.draggedItem.css("marginTop"));var f=parseInt(a.draggedItem.css("marginLeft"));a.offset=a.draggedItem.offset();a.offset.top=e.pageY-a.offset.top+(isNaN(c)?0:c)-1;a.offset.left=e.pageX-a.offset.left+(isNaN(f)?0:f)-1;if(!d.dragBetween)c=b(a.container).outerHeight()==0?Math.max(1,Math.round(0.5+b(a.container).children(d.itemSelector).size()*a.draggedItem.outerWidth()/b(a.container).outerWidth()))*a.draggedItem.outerHeight():b(a.container).outerHeight(),a.offsetLimit= b(a.container).offset(),a.offsetLimit.right=a.offsetLimit.left+b(a.container).outerWidth()-a.draggedItem.outerWidth(),a.offsetLimit.bottom=a.offsetLimit.top+c-a.draggedItem.outerHeight();c=a.draggedItem.height();f=a.draggedItem.width();var h=a.draggedItem.attr("style");a.draggedItem.attr("data-origStyle",h?h:"");d.itemSelector=="tr"?(a.draggedItem.children().each(function(){b(this).width(b(this).width())}),a.placeHolderItem=a.draggedItem.clone().attr("data-placeHolder",!0),a.draggedItem.after(a.placeHolderItem), a.placeHolderItem.children().each(function(){b(this).css({borderWidth:0,width:b(this).width()+1,height:b(this).height()+1}).html("&nbsp;")})):(a.draggedItem.after(d.placeHolderTemplate),a.placeHolderItem=a.draggedItem.next().css({height:c,width:f}).attr("data-placeHolder",!0));a.draggedItem.css({position:"absolute",opacity:0.8,"z-index":999,height:c,width:f});b(g).each(function(a,b){b.createDropTargets();b.buildPositionTable()});a.scroll={moveX:0,moveY:0,maxX:b(document).width()-b(window).width(), maxY:b(document).height()-b(window).height()};a.scroll.scrollY=window.setInterval(function(){if(d.scrollContainer!=window)b(d.scrollContainer).scrollTop(b(d.scrollContainer).scrollTop()+a.scroll.moveY);else{var c=b(d.scrollContainer).scrollTop();if(a.scroll.moveY>0&&c<a.scroll.maxY||a.scroll.moveY<0&&c>0)b(d.scrollContainer).scrollTop(c+a.scroll.moveY),a.draggedItem.css("top",a.draggedItem.offset().top+a.scroll.moveY+1)}},10);a.scroll.scrollX=window.setInterval(function(){if(d.scrollContainer!=window)b(d.scrollContainer).scrollLeft(b(d.scrollContainer).scrollLeft()+ a.scroll.moveX);else{var c=b(d.scrollContainer).scrollLeft();if(a.scroll.moveX>0&&c<a.scroll.maxX||a.scroll.moveX<0&&c>0)b(d.scrollContainer).scrollLeft(c+a.scroll.moveX),a.draggedItem.css("left",a.draggedItem.offset().left+a.scroll.moveX+1)}},10);a.setPos(e.pageX,e.pageY);b(document).bind("selectstart",a.stopBubble);b(document).bind("mousemove",a.swapItems);b(document).bind("mouseup",a.dropItem);d.scrollContainer!=window&&b(window).bind("DOMMouseScroll mousewheel",a.wheel);return!1}},setPos:function(e, c){var f=c-this.offset.top,h=e-this.offset.left;d.dragBetween||(f=Math.min(this.offsetLimit.bottom,Math.max(f,this.offsetLimit.top)),h=Math.min(this.offsetLimit.right,Math.max(h,this.offsetLimit.left)));this.draggedItem.parents().each(function(){if(b(this).css("position")!="static"&&(!b.browser.mozilla||b(this).css("display")!="table")){var a=b(this).offset();f-=a.top;h-=a.left;return!1}});if(d.scrollContainer==window)c-=b(window).scrollTop(),e-=b(window).scrollLeft(),c=Math.max(0,c-b(window).height()+ 5)+Math.min(0,c-5),e=Math.max(0,e-b(window).width()+5)+Math.min(0,e-5);else{var l=b(d.scrollContainer),g=l.offset();c=Math.max(0,c-l.height()-g.top)+Math.min(0,c-g.top);e=Math.max(0,e-l.width()-g.left)+Math.min(0,e-g.left)}a.scroll.moveX=e==0?0:e*d.scrollSpeed/Math.abs(e);a.scroll.moveY=c==0?0:c*d.scrollSpeed/Math.abs(c);this.draggedItem.css({top:f,left:h})},wheel:function(e){if((b.browser.safari||b.browser.mozilla)&&a&&d.scrollContainer!=window){var c=b(d.scrollContainer),f=c.offset();e.pageX>f.left&& e.pageX<f.left+c.width()&&e.pageY>f.top&&e.pageY<f.top+c.height()&&(f=e.detail?e.detail*5:e.wheelDelta/-2,c.scrollTop(c.scrollTop()+f),e.preventDefault())}},buildPositionTable:function(){var a=this.draggedItem==null?null:this.draggedItem.get(0),c=[];b(this.container).children(d.itemSelector).each(function(d,h){if(h!=a){var g=b(h).offset();g.right=g.left+b(h).width();g.bottom=g.top+b(h).height();g.elm=h;c.push(g)}});this.pos=c},dropItem:function(){if(a.draggedItem!=null){b(a.container).find(d.dragSelector).css("cursor", "pointer");a.placeHolderItem.before(a.draggedItem);var e=a.draggedItem.attr("data-origStyle");e==""?a.draggedItem.removeAttr("style"):a.draggedItem.attr("style",e);a.draggedItem.removeAttr("data-origStyle");a.placeHolderItem.remove();b("[data-dropTarget]").remove();window.clearInterval(a.scroll.scrollY);window.clearInterval(a.scroll.scrollX);var c=!1;b(g).each(function(){b(this.container).children(d.itemSelector).each(function(a){parseInt(b(this).attr("data-itemIdx"))!=a&&(c=!0,b(this).attr("data-itemIdx", a))})});c&&d.dragEnd.apply(a.draggedItem);a.draggedItem=null;b(document).unbind("selectstart",a.stopBubble);b(document).unbind("mousemove",a.swapItems);b(document).unbind("mouseup",a.dropItem);d.scrollContainer!=window&&b(window).unbind("DOMMouseScroll mousewheel",a.wheel);return!1}},stopBubble:function(){return!1},swapItems:function(e){if(a.draggedItem==null)return!1;a.setPos(e.pageX,e.pageY);for(var c=a.findPos(e.pageX,e.pageY),f=a,h=0;c==-1&&d.dragBetween&&h<g.length;h++)c=g[h].findPos(e.pageX, e.pageY),f=g[h];if(c==-1||b(f.pos[c].elm).attr("data-placeHolder"))return!1;j==null||j.top>a.draggedItem.offset().top||j.left>a.draggedItem.offset().left?b(f.pos[c].elm).before(a.placeHolderItem):b(f.pos[c].elm).after(a.placeHolderItem);b(g).each(function(a,b){b.createDropTargets();b.buildPositionTable()});j=a.draggedItem.offset();return!1},findPos:function(a,b){for(var d=0;d<this.pos.length;d++)if(this.pos[d].left<a&&this.pos[d].right>a&&this.pos[d].top<b&&this.pos[d].bottom>b)return d;return-1}, createDropTargets:function(){d.dragBetween&&b(g).each(function(){var d=b(this.container).find("[data-placeHolder]"),c=b(this.container).find("[data-dropTarget]");d.size()>0&&c.size()>0?c.remove():d.size()==0&&c.size()==0&&(b(this.container).append(a.placeHolderItem.removeAttr("data-placeHolder").clone().attr("data-dropTarget",!0)),a.placeHolderItem.attr("data-placeHolder",!0))})}};m.init();g.push(m)});return this};b.fn.dragsort.defaults={itemSelector:"li",dragSelector:"li",dragSelectorExclude:"input, textarea, a[href]", dragEnd:function(){},dragBetween:!1,placeHolderTemplate:"<li>&nbsp;</li>",scrollContainer:window,scrollSpeed:5}})(jQuery);