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- !function(a){"use strict";function e(a){a.touches||(a.touches=a.originalEvent.touches)}function f(a,d){d._startY=a.touches[0].pageY,d.opts.scrollArea==window?(d._meHeight=b.height(),d._childrenHeight=c.height()):(d._meHeight=d.$element.height(),d._childrenHeight=d.$element.children().height()),d._scrollTop=d.$scrollArea.scrollTop()}function g(b,c){c._curY=b.touches[0].pageY,c._moveY=c._curY-c._startY,c._moveY>0?c.direction="down":c._moveY<0&&(c.direction="up");var d=Math.abs(c._moveY);""!=c.opts.loadUpFn&&c._scrollTop<=0&&"down"==c.direction&&(b.preventDefault(),c.insertDOM||(c.$element.prepend('<center class="'+c.opts.domUp.domClass+'"></center>'),c.insertDOM=!0),c.$domUp=a("."+c.opts.domUp.domClass),j(c.$domUp,0),d<=c.opts.distance?(c._offsetY=d,c.$domUp.html("").append(c.opts.domUp.domRefresh)):d>c.opts.distance&&d<=2*c.opts.distance?(c._offsetY=c.opts.distance+.5*(d-c.opts.distance),c.$domUp.html("").append(c.opts.domUp.domUpdate)):c._offsetY=c.opts.distance+.5*c.opts.distance+.2*(d-2*c.opts.distance),c.$domUp.css({height:c._offsetY})),""!=c.opts.loadDownFn&&c._childrenHeight<=c._meHeight+c._scrollTop&&"up"==c.direction&&(b.preventDefault(),c.insertDOM||(c.$element.append('<center class="'+c.opts.domDown.domClass+'"></center>'),c.insertDOM=!0),c.$domDown=a("."+c.opts.domDown.domClass),j(c.$domDown,0),d<=c.opts.distance?(c._offsetY=d,c.$domDown.html("").append(c.opts.domDown.domRefresh)):d>c.opts.distance&&d<=2*c.opts.distance?(c._offsetY=c.opts.distance+.5*(d-c.opts.distance),c.$domDown.html("").append(c.opts.domDown.domUpdate)):c._offsetY=c.opts.distance+.5*c.opts.distance+.2*(d-2*c.opts.distance),c.$domDown.css({height:c._offsetY}),c.$scrollArea.scrollTop(c._offsetY+c._scrollTop))}function h(b){var c=Math.abs(b._moveY);b.insertDOM&&("down"==b.direction?(b.$domResult=b.$domUp,b.domLoad=b.opts.domUp.domLoad):"up"==b.direction&&(b.$domResult=b.$domDown,b.domLoad=b.opts.domDown.domLoad),j(b.$domResult,300),c>b.opts.distance?(b.$domResult.css({height:b.$domResult.children().height()}),b.$domResult.html("").append(b.domLoad),i(b)):b.$domResult.css({height:"0"}).on("webkitTransitionEnd",function(){b.insertDOM=!1,a(this).remove()}),b._moveY=0)}function i(a){a.loading=!0,""!=a.opts.loadUpFn&&"down"==a.direction?a.opts.loadUpFn(a):""!=a.opts.loadDownFn&&"up"==a.direction&&a.opts.loadDownFn(a)}function j(a,b){a.css({"-webkit-transition":"all "+b+"ms",transition:"all "+b+"ms"})}var d,b=a(window),c=a(document);a.fn.dropload=function(a){return new d(this,a)},d=function(b,c){var d=this;d.$element=a(b),d.insertDOM=!1,d.loading=!1,d.isLock=!1,d.init(c)},d.prototype.init=function(c){var d=this;d.opts=a.extend({},{scrollArea:d.$element,domUp:{domClass:"dropload-up",domRefresh:'<center class="dropload-refresh">↓下拉刷新</center>',domUpdate:'<center class="dropload-update">↑释放更新</center>',domLoad:'<center class="dropload-load"><span class="loading"></span>加载中...</center>'},domDown:{domClass:"dropload-down",domRefresh:'<center class="dropload-refresh">↑上拉加载更多</center>',domUpdate:'<center class="dropload-update">↓释放加载</center>',domLoad:'<center class="dropload-load"><span class="loading"></span>加载中...</center>'},distance:50,loadUpFn:"",loadDownFn:""},c),d.$scrollArea=d.opts.scrollArea==window?b:d.opts.scrollArea,d.$element.on("touchstart",function(a){d.loading||d.isLock||(e(a),f(a,d))}),d.$element.on("touchmove",function(a){d.loading||d.isLock||(e(a,d),g(a,d))}),d.$element.on("touchend",function(){d.loading||d.isLock||h(d)})},d.prototype.lock=function(){var a=this;a.isLock=!0},d.prototype.unlock=function(){var a=this;a.isLock=!1},d.prototype.resetload=function(){var b=this;b.$domResult&&b.$domResult.css({height:"0"}).on("webkitTransitionEnd",function(){b.loading=!1,b.insertDOM=!1,a(this).remove()})}}(window.Zepto||window.jQuery);
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