mescroll.m.js

/*!
 * mescroll -- 精致的下拉刷新和上拉加载js框架  ( a great JS framework for pull-refresh and pull-up-loading )
 * version 1.3.1
 * 2017-12-19
 * 
 * 您如果在vue,angular等环境中,因作用域的问题未能正常引入或初始化Mescroll对象,则可引用mescroll.m.js;
 * mescroll.m.js去掉了mescroll.min.js套的一层模块规范的代码
 * 因为没有闭包限制作用域,所以能解决某些情况下引用mescroll.min.js报'Mescroll' undefined的问题
 * 具体请参考: https://github.com/mescroll/mescroll/issues/56
 */
function MeScroll(a,d){var f=this;f.version="1.3.1";f.isScrollBody=(!a||a=="body");f.scrollDom=f.isScrollBody?document.body:f.getDomById(a);if(!f.scrollDom){return}f.options=d||{};var c=navigator.userAgent;var b=!!c.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/);var g=typeof window.orientation=="undefined";var e=c.indexOf("Android")>-1||c.indexOf("Adr")>-1;f.os={ios:b,pc:g,android:e};f.isDownScrolling=false;f.isUpScrolling=false;f.initDownScroll();f.initUpScroll();setTimeout(function(){if(f.optDown.use&&f.optDown.auto){if(f.optDown.autoShowLoading){f.triggerDownScroll()}else{f.optDown.callback&&f.optDown.callback(f)}}f.optUp.use&&f.optUp.auto&&!f.isUpAutoLoad&&f.triggerUpScroll()},30)}MeScroll.prototype.extendDownScroll=function(a){MeScroll.extend(a,{use:true,auto:true,autoShowLoading:false,isLock:false,isBoth:false,offset:80,outOffsetRate:0.2,bottomOffset:20,minAngle:45,hardwareClass:"mescroll-hardware",warpId:null,warpClass:"mescroll-downwarp",resetClass:"mescroll-downwarp-reset",htmlContent:'<p class="downwarp-progress"></p><p class="downwarp-tip">下拉刷新 </p>',inited:function(c,b){c.downTipDom=b.getElementsByClassName("downwarp-tip")[0];c.downProgressDom=b.getElementsByClassName("downwarp-progress")[0]},inOffset:function(b){if(b.downTipDom){b.downTipDom.innerHTML="下拉刷新"}if(b.downProgressDom){b.downProgressDom.classList.remove("mescroll-rotate")}},outOffset:function(b){if(b.downTipDom){b.downTipDom.innerHTML="释放更新"}},onMoving:function(c,e,b){if(c.downProgressDom){var d=360*e;c.downProgressDom.style.webkitTransform="rotate("+d+"deg)";c.downProgressDom.style.transform="rotate("+d+"deg)"}},beforeLoading:function(c,b){return false},showLoading:function(b){if(b.downTipDom){b.downTipDom.innerHTML="加载中 ..."}if(b.downProgressDom){b.downProgressDom.classList.add("mescroll-rotate")}},callback:function(b){b.resetUpScroll()}})};MeScroll.prototype.extendUpScroll=function(a){var b=this.os.pc;MeScroll.extend(a,{use:true,auto:true,isLock:false,isBoth:false,isBounce:true,callback:null,page:{num:0,size:10,time:null},noMoreSize:5,offset:100,toTop:{warpId:null,src:null,html:null,offset:1000,warpClass:"mescroll-totop",showClass:"mescroll-fade-in",hideClass:"mescroll-fade-out",duration:300,supportTap:false},loadFull:{use:false,delay:500},empty:{warpId:null,icon:null,tip:"暂无相关数据~",btntext:"",btnClick:null,supportTap:false},clearId:null,clearEmptyId:null,hardwareClass:"mescroll-hardware",warpId:null,warpClass:"mescroll-upwarp",htmlLoading:'<p class="upwarp-progress mescroll-rotate"></p><p class="upwarp-tip">加载中..</p>',htmlNodata:'<p class="upwarp-nodata">-- END --</p>',inited:function(c,d){},showLoading:function(c,d){d.innerHTML=c.optUp.htmlLoading},showNoMore:function(c,d){d.innerHTML=c.optUp.htmlNodata},onScroll:null,scrollbar:{use:b,barClass:"mescroll-bar"}})};MeScroll.extend=function(b,a){if(!b){return a}for(key in a){if(b[key]==null){b[key]=a[key]}else{if(typeof b[key]=="object"){MeScroll.extend(b[key],a[key])}}}return b};MeScroll.prototype.initDownScroll=function(){var b=this;b.optDown=b.options.down||{};b.extendDownScroll(b.optDown);b.touchstartEvent=function(c){if(b.isScrollTo){c.preventDefault()}b.startPoint=b.getPoint(c);b.lastPoint=b.startPoint;b.maxTouchmoveY=b.getBodyHeight()-b.optDown.bottomOffset;b.inTouchend=false;if(b.os.pc&&b.getScrollTop()<=0){b.scrollDom.addEventListener("mousemove",b.touchmoveEvent);document.ondragstart=function(){return false}}};b.scrollDom.addEventListener("mousedown",b.touchstartEvent);b.scrollDom.addEventListener("touchstart",b.touchstartEvent);b.touchmoveEvent=function(k){var c=b.getScrollTop();var g=b.getPoint(k);var d=g.y-b.startPoint.y;if(d>0){if(c<=0){if(k.cancelable&&!k.defaultPrevented){k.preventDefault()}if(b.optDown.use&&!b.inTouchend&&!b.isDownScrolling&&!b.optDown.isLock&&(!b.isUpScrolling||(b.isUpScrolling&&b.optUp.isBoth))){var n=Math.abs(b.lastPoint.x-g.x);var m=Math.abs(b.lastPoint.y-g.y);var l=Math.sqrt(n*n+m*m);if(l!=0){var f=Math.asin(m/l)/Math.PI*180;if(f<b.optDown.minAngle){return}}if(b.maxTouchmoveY>0&&g.y>=b.maxTouchmoveY){b.inTouchend=true;b.touchendEvent();return}var o=g.y-b.lastPoint.y;if(!b.downHight){b.downHight=0}if(b.downHight<b.optDown.offset){if(b.movetype!=1){b.movetype=1;b.optDown.inOffset(b);b.downwarp.classList.remove(b.optDown.resetClass);b.scrollDom.classList.add(b.optDown.hardwareClass);b.scrollDom.style.webkitOverflowScrolling="auto";b.isMoveDown=true}b.downHight+=o}else{if(b.movetype!=2){b.movetype=2;b.optDown.outOffset(b);b.downwarp.classList.remove(b.optDown.resetClass);b.scrollDom.classList.add(b.optDown.hardwareClass);b.scrollDom.style.webkitOverflowScrolling="auto";b.isMoveDown=true}if(o>0){b.downHight+=o*b.optDown.outOffsetRate}else{b.downHight+=o}}b.downwarp.style.height=b.downHight+"px";var j=b.downHight/b.optDown.offset;b.optDown.onMoving(b,j,b.downHight)}}}else{if(d<0){var p=b.getScrollHeight();var i=b.getClientHeight();var h=p-i-c;if(!b.optUp.isBounce&&k.cancelable&&!k.defaultPrevented&&h<=0){k.preventDefault()}if(b.optUp.use&&!b.optUp.isLock&&b.optUp.hasNext&&!b.isUpScrolling&&(!b.isDownScrolling||(b.isDownScrolling&&b.optDown.isBoth))&&(i+b.optUp.offset>=p||h<=0)){b.triggerUpScroll()}}}b.lastPoint=g};b.scrollDom.addEventListener("touchmove",b.touchmoveEvent);b.touchendEvent=function(){if(b.optDown.use&&b.isMoveDown){if(b.downHight>=b.optDown.offset){b.triggerDownScroll()}else{b.downwarp.classList.add(b.optDown.resetClass);b.downHight=0;b.downwarp.style.height=0}b.scrollDom.style.webkitOverflowScrolling="touch";b.scrollDom.classList.remove(b.optDown.hardwareClass);b.movetype=0;b.isMoveDown=false}if(b.os.pc){b.scrollDom.removeEventListener("mousemove",b.touchmoveEvent);document.ondragstart=function(){return true}}};b.scrollDom.addEventListener("mouseup",b.touchendEvent);b.scrollDom.addEventListener("mouseleave",b.touchendEvent);b.scrollDom.addEventListener("touchend",b.touchendEvent);b.scrollDom.addEventListener("touchcancel",b.touchendEvent);if(b.optDown.use){b.downwarp=document.createElement("div");b.downwarp.className=b.optDown.warpClass;b.downwarp.innerHTML='<div class="downwarp-content">'+b.optDown.htmlContent+"</div>";var a=b.optDown.warpId?b.getDomById(b.optDown.warpId):b.scrollDom;if(b.optDown.warpId&&a){a.appendChild(b.downwarp)}else{if(!a){a=b.scrollDom}a.insertBefore(b.downwarp,b.scrollDom.firstChild)}setTimeout(function(){b.optDown.inited(b,b.downwarp)},0)}};MeScroll.prototype.getPoint=function(a){return{x:a.touches?a.touches[0].pageX:a.clientX,y:a.touches?a.touches[0].pageY:a.clientY}};MeScroll.prototype.triggerDownScroll=function(){if(!this.optDown.beforeLoading(this,this.downwarp)){this.showDownScroll();this.optDown.callback&&this.optDown.callback(this)}};MeScroll.prototype.showDownScroll=function(){this.isDownScrolling=true;this.optDown.showLoading(this);this.downHight=this.optDown.offset;this.downwarp.classList.add(this.optDown.resetClass);this.downwarp.style.height=this.optDown.offset+"px"};MeScroll.prototype.endDownScroll=function(){this.downHight=0;this.downwarp.style.height=0;this.isDownScrolling=false;if(this.downProgressDom){this.downProgressDom.classList.remove("mescroll-rotate")}};MeScroll.prototype.lockDownScroll=function(a){if(a==null){a=true}this.optDown.isLock=a};MeScroll.prototype.initUpScroll=function(){var b=this;b.optUp=b.options.up||{use:false};b.extendUpScroll(b.optUp);if(b.optUp.scrollbar.use){b.scrollDom.classList.add(b.optUp.scrollbar.barClass)}if(!b.optUp.isBounce){b.setBounce(false)}if(b.optUp.use==false){return}b.optUp.hasNext=true;b.upwarp=document.createElement("div");b.upwarp.className=b.optUp.warpClass;var a;if(b.optUp.warpId){a=b.getDomById(b.optUp.warpId)}if(!a){a=b.scrollDom}a.appendChild(b.upwarp);b.preScrollY=0;b.scrollEvent=function(){var e=b.getScrollTop();var d=e-b.preScrollY>0;b.preScrollY=e;if(!b.isUpScrolling&&(!b.isDownScrolling||(b.isDownScrolling&&b.optDown.isBoth))){if(!b.optUp.isLock&&b.optUp.hasNext){var c=b.getScrollHeight()-b.getClientHeight()-e;if(c<=b.optUp.offset&&d){b.triggerUpScroll()}}var f=b.optUp.toTop;if(f.src||f.html){if(e>=f.offset){b.showTopBtn()}else{b.hideTopBtn()}}}b.optUp.onScroll&&b.optUp.onScroll(b,e,d)};if(b.isScrollBody){window.addEventListener("scroll",b.scrollEvent)}else{b.scrollDom.addEventListener("scroll",b.scrollEvent)}setTimeout(function(){b.optUp.inited(b,b.upwarp)},0)};MeScroll.prototype.setBounce=function(a){if(this.isScrollBody||!this.os.ios){return}if(a==false){this.optUp.isBounce=false;window.addEventListener("touchmove",this.bounceTouchmove)}else{this.optUp.isBounce=true;window.removeEventListener("touchmove",this.bounceTouchmove)}};MeScroll.prototype.bounceTouchmove=function(g){var i=this;var c=g.target;var d=true;while(c!==document.body&&c!==document){var l=c.classList;if(l){if(l.contains("mescroll")||l.contains("mescroll-touch")){d=false;break}else{if(l.contains("mescroll-touch-x")||l.contains("mescroll-touch-y")){var b=g.touches?g.touches[0].pageX:g.clientX;var a=g.touches?g.touches[0].pageY:g.clientY;if(!i.preWinX){i.preWinX=b}if(!i.preWinY){i.preWinY=a}var k=Math.abs(i.preWinX-b);var j=Math.abs(i.preWinY-a);var h=Math.sqrt(k*k+j*j);i.preWinX=b;i.preWinY=a;if(h!=0){var f=Math.asin(j/h)/Math.PI*180;if((f<=45&&l.contains("mescroll-touch-x"))||(f>45&&l.contains("mescroll-touch-y"))){d=false;break}}}}}c=c.parentNode}if(d&&g.cancelable&&!g.defaultPrevented){g.preventDefault()}};MeScroll.prototype.triggerUpScroll=function(){if(!this.isUpScrolling){this.showUpScroll();this.optUp.page.num++;this.isUpAutoLoad=true;this.optUp.callback&&this.optUp.callback(this.optUp.page,this)}};MeScroll.prototype.showUpScroll=function(){this.isUpScrolling=true;this.upwarp.classList.add(this.optUp.hardwareClass);this.upwarp.style.visibility="visible";this.optUp.showLoading(this,this.upwarp)};MeScroll.prototype.showNoMore=function(){this.upwarp.style.visibility="visible";this.optUp.hasNext=false;this.optUp.showNoMore(this,this.upwarp)};MeScroll.prototype.hideUpScroll=function(){this.upwarp.style.visibility="hidden";this.upwarp.classList.remove(this.optUp.hardwareClass);var a=this.upwarp.getElementsByClassName("upwarp-progress")[0];if(a){a.classList.remove("mescroll-rotate")}};MeScroll.prototype.endUpScroll=function(a){if(a!=null){if(a){this.showNoMore()}else{this.hideUpScroll()}}this.isUpScrolling=false};MeScroll.prototype.resetUpScroll=function(b){if(this.optUp&&this.optUp.use){var a=this.optUp.page;this.prePageNum=a.num;this.prePageTime=a.time;a.num=1;a.time=null;if(!this.isDownScrolling&&b!=false){if(b==null){this.removeEmpty();this.clearDataList();this.showUpScroll()}else{this.showDownScroll()}}this.isUpAutoLoad=true;this.optUp.callback&&this.optUp.callback(a,this)}};MeScroll.prototype.setPageNum=function(a){this.optUp.page.num=a-1};MeScroll.prototype.setPageSize=function(a){this.optUp.page.size=a};MeScroll.prototype.clearDataList=function(){var b=this.optUp.clearId||this.optUp.clearEmptyId;if(b){var a=this.getDomById(b);if(a){a.innerHTML=""}}};MeScroll.prototype.endByPage=function(b,d,c){var a;if(this.optUp.use&&d!=null){a=this.optUp.page.num<d}this.endSuccess(b,a,c)};MeScroll.prototype.endBySize=function(c,b,d){var a;if(this.optUp.use&&b!=null){var e=(this.optUp.page.num-1)*this.optUp.page.size+c;a=e<b}this.endSuccess(c,a,d)};MeScroll.prototype.endSuccess=function(c,a,e){if(this.isDownScrolling){this.endDownScroll()}if(this.optUp.use){var d;if(c!=null){var f=this.optUp.page.num;var b=this.optUp.page.size;if(f==1){this.clearDataList();if(e){this.optUp.page.time=e}}if(c<b||a==false){this.optUp.hasNext=false;if(c==0&&f==1){d=false;this.showEmpty()}else{var g=(f-1)*b+c;if(g<this.optUp.noMoreSize){d=false}else{d=true}this.removeEmpty()}}else{d=false;this.optUp.hasNext=true;this.removeEmpty()}}this.endUpScroll(d);this.loadFull()}};MeScroll.prototype.endErr=function(){if(this.isDownScrolling){var a=this.optUp.page;if(a&&this.prePageNum){a.num=this.prePageNum;a.time=this.prePageTime}this.endDownScroll()}if(this.isUpScrolling){this.optUp.page.num--;this.endUpScroll(false)}};MeScroll.prototype.loadFull=function(){var a=this;if(a.optUp.loadFull.use&&!a.optUp.isLock&&a.optUp.hasNext&&a.getScrollHeight()<=a.getClientHeight()){setTimeout(function(){if(a.getScrollHeight()<=a.getClientHeight()){a.triggerUpScroll()}},a.optUp.loadFull.delay)}};MeScroll.prototype.lockUpScroll=function(a){if(a==null){a=true}this.optUp.isLock=a};MeScroll.prototype.showEmpty=function(){var b=this;var c=b.optUp.empty;var a=c.warpId||b.optUp.clearEmptyId;if(a==null){return}var f=b.getDomById(a);if(f){b.removeEmpty();var e="";if(c.icon){e+='<img class="empty-icon" src="'+c.icon+'"/>'}if(c.tip){e+='<p class="empty-tip">'+c.tip+"</p>"}if(c.btntext){e+='<p class="empty-btn">'+c.btntext+"</p>"}b.emptyDom=document.createElement("div");b.emptyDom.className="mescroll-empty";b.emptyDom.innerHTML=e;f.appendChild(b.emptyDom);if(c.btnClick){var d=b.emptyDom.getElementsByClassName("empty-btn")[0];if(c.supportTap){d.addEventListener("tap",function(g){g.stopPropagation();g.preventDefault();c.btnClick()})}else{d.onclick=function(){c.btnClick()}}}}};MeScroll.prototype.removeEmpty=function(){this.removeChild(this.emptyDom)};MeScroll.prototype.showTopBtn=function(){if(!this.topBtnShow){this.topBtnShow=true;var b=this;var c=b.optUp.toTop;if(b.toTopBtn==null){if(c.html){b.toTopBtn=document.createElement("div");b.toTopBtn.innerHTML=c.html}else{b.toTopBtn=document.createElement("img");b.toTopBtn.src=c.src}b.toTopBtn.className=c.warpClass;if(c.supportTap){b.toTopBtn.addEventListener("tap",function(d){d.stopPropagation();d.preventDefault();b.scrollTo(0,b.optUp.toTop.duration)})}else{b.toTopBtn.onclick=function(){b.scrollTo(0,b.optUp.toTop.duration)}}var a;if(c.warpId){a=b.getDomById(c.warpId)}if(!a){a=document.body}a.appendChild(b.toTopBtn)}b.toTopBtn.classList.remove(c.hideClass);b.toTopBtn.classList.add(c.showClass)}};MeScroll.prototype.hideTopBtn=function(){if(this.topBtnShow&&this.toTopBtn){this.topBtnShow=false;this.toTopBtn.classList.remove(this.optUp.toTop.showClass);this.toTopBtn.classList.add(this.optUp.toTop.hideClass)}};MeScroll.prototype.scrollTo=function(f,b){var c=this;var e=c.getScrollTop();var a=f;if(a>0){var d=c.getScrollHeight()-c.getClientHeight();if(a>d){a=d}}else{a=0}c.isScrollTo=true;c.getStep(e,a,function(g){c.setScrollTop(g);if(g==a){c.isScrollTo=false}},b)};MeScroll.prototype.getStep=function(e,c,j,k,g){var h=c-e;if(k==0||h==0){j&&j(c);return}k=k||300;g=g||30;var f=k/g;var b=h/f;var d=0;var a=window.setInterval(function(){if(d<f-1){e+=b;j&&j(e,a);d++}else{j&&j(c,a);window.clearInterval(a)}},g)};MeScroll.prototype.getScrollHeight=function(){return this.scrollDom.scrollHeight};MeScroll.prototype.getClientHeight=function(){if(this.isScrollBody&&document.compatMode=="CSS1Compat"){return document.documentElement.clientHeight}else{return this.scrollDom.clientHeight}};MeScroll.prototype.getBodyHeight=function(){return document.body.clientHeight||document.documentElement.clientHeight};MeScroll.prototype.getScrollTop=function(){if(this.isScrollBody){return document.documentElement.scrollTop||document.body.scrollTop}else{return this.scrollDom.scrollTop}};MeScroll.prototype.getToBottom=function(){return this.getScrollHeight()-this.getClientHeight()-this.getScrollTop()};MeScroll.prototype.setScrollTop=function(a){if(this.isScrollBody){document.documentElement.scrollTop=a;document.body.scrollTop=a}else{this.scrollDom.scrollTop=a}};MeScroll.prototype.getDomById=function(b){var a;if(b){a=document.getElementById(b)}if(!a){console.error('the element with id as "'+b+'" can not be found: document.getElementById("'+b+'")==null')}return a};MeScroll.prototype.removeChild=function(b){if(b){var a=b.parentNode;a&&a.removeChild(b);b=null}};MeScroll.prototype.destroy=function(){var a=this;a.scrollDom.removeEventListener("touchstart",a.touchstartEvent);a.scrollDom.removeEventListener("touchmove",a.touchmoveEvent);a.scrollDom.removeEventListener("touchend",a.touchendEvent);a.scrollDom.removeEventListener("touchcancel",a.touchendEvent);a.scrollDom.removeEventListener("mousedown",a.touchstartEvent);a.scrollDom.removeEventListener("mousemove",a.touchmoveEvent);a.scrollDom.removeEventListener("mouseup",a.touchendEvent);a.scrollDom.removeEventListener("mouseleave",a.touchendEvent);a.removeChild(a.downwarp);if(a.isScrollBody){window.removeEventListener("scroll",a.scrollEvent)}else{a.scrollDom.removeEventListener("scroll",a.scrollEvent)}a.removeChild(a.upwarp);a.removeChild(a.toTopBtn);a.setBounce(true)};