/**
 * dropload
 * 西门(http://ons.me/526.html)
 * 0.9.0(160215)
 */
!function(a){"use strict";function g(a){a.touches||(a.touches=a.originalEvent.touches)}function h(a,b){b._startY=a.touches[0].pageY,b.touchScrollTop=b.$scrollArea.scrollTop()}function i(b,c){c._curY=b.touches[0].pageY,c._moveY=c._curY-c._startY,c._moveY>0?c.direction="down":c._moveY<0&&(c.direction="up");var d=Math.abs(c._moveY);""!=c.opts.loadUpFn&&c.touchScrollTop<=0&&"down"==c.direction&&!c.isLockUp&&(b.preventDefault(),c.$domUp=a("."+c.opts.domUp.domClass),c.upInsertDOM||(c.$element.prepend('<div class="'+c.opts.domUp.domClass+'"></div>'),c.upInsertDOM=!0),n(c.$domUp,0),d<=c.opts.distance?(c._offsetY=d,c.$domUp.html(c.opts.domUp.domRefresh)):d>c.opts.distance&&d<=2*c.opts.distance?(c._offsetY=c.opts.distance+.5*(d-c.opts.distance),c.$domUp.html(c.opts.domUp.domUpdate)):c._offsetY=c.opts.distance+.5*c.opts.distance+.2*(d-2*c.opts.distance),c.$domUp.css({height:c._offsetY}))}function j(b){var c=Math.abs(b._moveY);""!=b.opts.loadUpFn&&b.touchScrollTop<=0&&"down"==b.direction&&!b.isLockUp&&(n(b.$domUp,300),c>b.opts.distance?(b.$domUp.css({height:b.$domUp.children().height()}),b.$domUp.html(b.opts.domUp.domLoad),b.loading=!0,b.opts.loadUpFn(b)):b.$domUp.css({height:"0"}).on("webkitTransitionEnd mozTransitionEnd transitionend",function(){b.upInsertDOM=!1,a(this).remove()}),b._moveY=0)}function k(a){a.opts.autoLoad&&a._scrollContentHeight-a._threshold<=a._scrollWindowHeight&&m(a)}function l(a){a._scrollContentHeight=a.opts.scrollArea==b?e.height():a.$element[0].scrollHeight}function m(a){a.direction="up",a.$domDown.html(a.opts.domDown.domLoad),a.loading=!0,a.opts.loadDownFn(a)}function n(a,b){a.css({"-webkit-transition":"all "+b+"ms",transition:"all "+b+"ms"})}var f,b=window,c=document,d=a(b),e=a(c);a.fn.dropload=function(a){return new f(this,a)},f=function(a,b){var c=this;c.$element=a,c.upInsertDOM=!1,c.loading=!1,c.isLockUp=!1,c.isLockDown=!1,c.isData=!0,c._scrollTop=0,c._threshold=0,c.init(b)},f.prototype.init=function(f){var l=this;l.opts=a.extend(!0,{},{scrollArea:l.$element,domUp:{domClass:"dropload-up",domRefresh:'<div class="dropload-refresh">↓下拉刷新</div>',domUpdate:'<div class="dropload-update">↑释放更新</div>',domLoad:'<div class="dropload-load"><span class="loading"></span>加载中...</div>'},domDown:{domClass:"dropload-down",domRefresh:'<div class="dropload-refresh">↑上拉加载更多</div>',domLoad:'<div class="dropload-load"><span class="loading"></span>加载中...</div>',domNoData:'<div class="dropload-noData">暂无数据</div>'},autoLoad:!0,distance:50,threshold:"",loadUpFn:"",loadDownFn:""},f),""!=l.opts.loadDownFn&&(l.$element.append('<div class="'+l.opts.domDown.domClass+'">'+l.opts.domDown.domRefresh+"</div>"),l.$domDown=a("."+l.opts.domDown.domClass)),l._threshold=l.$domDown&&""===l.opts.threshold?Math.floor(1*l.$domDown.height()/3):l.opts.threshold,l.opts.scrollArea==b?(l.$scrollArea=d,l._scrollContentHeight=e.height(),l._scrollWindowHeight=c.documentElement.clientHeight):(l.$scrollArea=l.opts.scrollArea,l._scrollContentHeight=l.$element[0].scrollHeight,l._scrollWindowHeight=l.$element.height()),k(l),d.on("resize",function(){l._scrollWindowHeight=l.opts.scrollArea==b?b.innerHeight:l.$element.height()}),l.$element.on("touchstart",function(a){l.loading||(g(a),h(a,l))}),l.$element.on("touchmove",function(a){l.loading||(g(a,l),i(a,l))}),l.$element.on("touchend",function(){l.loading||j(l)}),l.$scrollArea.on("scroll",function(){l._scrollTop=l.$scrollArea.scrollTop(),""!=l.opts.loadDownFn&&!l.loading&&!l.isLockDown&&l._scrollContentHeight-l._threshold<=l._scrollWindowHeight+l._scrollTop&&m(l)})},f.prototype.lock=function(a){var b=this;void 0===a?"up"==b.direction?b.isLockDown=!0:"down"==b.direction?b.isLockUp=!0:(b.isLockUp=!0,b.isLockDown=!0):"up"==a?b.isLockUp=!0:"down"==a&&(b.isLockDown=!0,b.direction="up")},f.prototype.unlock=function(){var a=this;a.isLockUp=!1,a.isLockDown=!1,a.direction="up"},f.prototype.noData=function(a){var b=this;void 0===a||1==a?b.isData=!1:0==a&&(b.isData=!0)},f.prototype.resetload=function(){var b=this;"down"==b.direction&&b.upInsertDOM?b.$domUp.css({height:"0"}).on("webkitTransitionEnd mozTransitionEnd transitionend",function(){b.loading=!1,b.upInsertDOM=!1,a(this).remove(),l(b)}):"up"==b.direction&&(b.loading=!1,b.isData?(b.$domDown.html(b.opts.domDown.domRefresh),l(b),k(b)):b.$domDown.html(b.opts.domDown.domNoData))}}(window.Zepto||window.jQuery);