cube-ui/lib/scroll/scroll.min.js

A fantastic mobile ui lib implement by Vue

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this.indicatorStyle.width=this.indicatorWidth+"px";this.x=o,this.scroller.options.useTransform?this.indicatorStyle[N.transform]="translateX("+o+"px)"+this.scroller.translateZ:this.indicatorStyle.left=o+"px"}},P.prototype.transitionTime=function(){var t=arguments.length>0&&void 0!==arguments[0]?arguments[0]:0;this.indicatorStyle[N.transitionDuration]=t+"ms"},P.prototype.transitionTimingFunction=function(t){this.indicatorStyle[N.transitionTimingFunction]=t},P.prototype.destroy=function(){this._removeDOMEvents(),this.wrapper.parentNode.removeChild(this.wrapper)},P.prototype._start=function(t){var e=t.touches?t.touches[0]:t;t.preventDefault(),t.stopPropagation(),this.transitionTime(),this.initiated=!0,this.moved=!1,this.lastPointX=e.pageX,this.lastPointY=e.pageY,this.startTime=o(),this._handleMoveEvents(l),this.scroller.trigger("beforeScrollStart")},P.prototype._move=function(t){var e=t.touches?t.touches[0]:t;t.preventDefault(),t.stopPropagation(),this.moved||this.scroller.trigger("scrollStart"),this.moved=!0;var i=e.pageX-this.lastPointX;this.lastPointX=e.pageX;var o=e.pageY-this.lastPointY;this.lastPointY=e.pageY;var n=this.x+i,r=this.y+o;this._pos(n,r)},P.prototype._end=function(t){if(this.initiated){this.initiated=!1,t.preventDefault(),t.stopPropagation(),this._handleMoveEvents(h);var e=this.scroller.options.snap;if(e){var i=e.speed,o=e.easing,n=void 0===o?$.bounce:o,r=this.scroller._nearestSnap(this.scroller.x,this.scroller.y),s=i||Math.max(Math.max(Math.min(Math.abs(this.scroller.x-r.x),1e3),Math.min(Math.abs(this.scroller.y-r.y),1e3)),300);this.scroller.x===r.x&&this.scroller.y===r.y||(this.scroller.directionX=0,this.scroller.directionY=0,this.scroller.currentPage=r,this.scroller.scrollTo(r.x,r.y,s,n))}this.moved&&this.scroller.trigger("scrollEnd",{x:this.scroller.x,y:this.scroller.y})}},P.prototype._pos=function(t,e){t<0?t=0:t>this.maxPosX&&(t=this.maxPosX),e<0?e=0:e>this.maxPosY&&(e=this.maxPosY),t=Math.round(t/this.sizeRatioX),e=Math.round(e/this.sizeRatioY),this.scroller.scrollTo(t,e),this.scroller.trigger("scroll",{x:this.scroller.x,y:this.scroller.y})},P.prototype._shouldShow=function(){return"vertical"===this.direction&&this.scroller.hasVerticalScroll||"horizontal"===this.direction&&this.scroller.hasHorizontalScroll?(this.wrapper.style.display="",!0):(this.wrapper.style.display="none",!1)},P.prototype._calculate=function(){if("vertical"===this.direction){var t=this.wrapper.clientHeight;this.indicatorHeight=Math.max(Math.round(t*t/(this.scroller.scrollerHeight||t||1)),8),this.indicatorStyle.height=this.indicatorHeight+"px",this.maxPosY=t-this.indicatorHeight,this.sizeRatioY=this.maxPosY/this.scroller.maxScrollY}else{var e=this.wrapper.clientWidth;this.indicatorWidth=Math.max(Math.round(e*e/(this.scroller.scrollerWidth||e||1)),8),this.indicatorStyle.width=this.indicatorWidth+"px",this.maxPosX=e-this.indicatorWidth,this.sizeRatioX=this.maxPosX/this.scroller.maxScrollX}},P.prototype._addDOMEvents=function(){var t=l;this._handleDOMEvents(t)},P.prototype._removeDOMEvents=function(){var t=h;this._handleDOMEvents(t),this._handleMoveEvents(t)},P.prototype._handleMoveEvents=function(t){this.scroller.options.disableTouch||t(window,"touchmove",this),this.scroller.options.disableMouse||t(window,"mousemove",this)},P.prototype._handleDOMEvents=function(t){this.scroller.options.disableTouch||(t(this.indicator,"touchstart",this),t(window,"touchend",this)),this.scroller.options.disableMouse||(t(this.indicator,"mousedown",this),t(window,"mouseup",this))};var et=2e3;D.prototype.onScroll=function(){var t=-this.scroller.y,e=t-this.anchorScrollTop;this.anchorItem=0===t?{index:0,offset:0}:this._calculateAnchoredItem(this.anchorItem,e),this.anchorScrollTop=t;var i=this._calculateAnchoredItem(this.anchorItem,this.wrapperEl.offsetHeight),o=this.anchorItem.index,n=i.index;e<0?(o-=30,n+=10):(o-=10,n+=30),this.fill(o,n),this.maybeRequestContent()},D.prototype.onResize=function(){var t=this.options.createTombstone();t.style.position="absolute",this.scrollerEl.appendChild(t),t.style.display="",this.tombstoneHeight=t.offsetHeight,this.tombstoneWidth=t.offsetWidth,this.scrollerEl.removeChild(t);for(var e=0;e<this.items.length;e++)this.items[e].height=this.items[e].width=0;this.onScroll()},D.prototype.fill=function(t,e){this.firstAttachedItem=Math.max(0,t),this.hasMore||(e=Math.min(e,this.items.length)),this.lastAttachedItem=e,this.attachContent()},D.prototype.maybeRequestContent=function(){var t=this;if(!this.requestInProgress&&this.hasMore){var e=this.lastAttachedItem-this.loadedItems;e<=0||(this.requestInProgress=!0,this.options.fetch(e).then(function(e){if(t.requestInProgress=!1,e)t.addContent(e);else{t.hasMore=!1;var i=t._removeTombstones(),o=0;t.anchorItem.index<=t.items.length?(o=t._fixScrollPosition(),t._setupAnimations({},o),t.scroller.resetPosition(t.scroller.options.bounceTime)):(t.anchorItem.index-=i,o=t._fixScrollPosition(),t._setupAnimations({},o),t.scroller.stop(),t.scroller.resetPosition(),t.onScroll())}}))}},D.prototype.addContent=function(t){for(var e=0;e<t.length;e++)this.items.length<=this.loadedItems&&this._addItem(),this.items[this.loadedItems++].data=t[e];this.attachContent(),this.maybeRequestContent()},D.prototype.attachContent=function(){var t=this._collectUnusedNodes(),e=this._createDOMNodes(t);this._cleanupUnusedNodes(t),this._cacheNodeSize();var i=this._fixScrollPosition();this._setupAnimations(e,i)},D.prototype.resetMore=function(){this.hasMore=!0},D.prototype._removeTombstones=function(){for(var t=void 0,e=0,i=this.items.length,o=0;o<i;o++){var n=this.items[o].node,r=this.items[o].data;n&&!M(n)||r||(t||(t=o),n&&this.scrollerEl.removeChild(n))}return e=i-t,this.items.splice(t),this.lastAttachedItem=Math.min(this.lastAttachedItem,this.items.length),e},D.prototype._collectUnusedNodes=function(){for(var t=[],e=0;e<this.items.length;e++)if(e!==this.firstAttachedItem){var i=this.items[e].node;i&&(M(i)?(this.tombstones.push(i),this.tombstones[this.tombstones.length-1].style.display="none"):t.push(i)),this.items[e].node=null}else e=this.lastAttachedItem-1;return t},D.prototype._createDOMNodes=function(t){for(var e={},i=this.firstAttachedItem;i<this.lastAttachedItem;i++){for(;this.items.length<=i;)this._addItem();var o=this.items[i].node,n=this.items[i].data;if(o){if(!M(o)||!n)continue;o.style.zIndex=1,e[i]=[o,this.items[i].top-this.anchorScrollTop],this.items[i].node=null}var r=n?this.options.render(n,t.pop()):this._getTombStone();r.style.position="absolute",this.items[i].top=-1,this.scrollerEl.appendChild(r),this.items[i].node=r}return e},D.prototype._cleanupUnusedNodes=function(t){for(;t.length;)this.scrollerEl.removeChild(t.pop())},D.prototype._cacheNodeSize=function(){for(var t=this.firstAttachedItem;t<this.lastAttachedItem;t++)this.items[t].data&&!this.items[t].height&&(this.items[t].height=this.items[t].node.offsetHeight,this.items[t].width=this.items[t].node.offsetWidth)},D.prototype._fixScrollPosition=function(){this.anchorScrollTop=0;for(var t=0;t<this.anchorItem.index;t++)this.anchorScrollTop+=this.items[t].height||this.tombstoneHeight;this.anchorScrollTop+=this.anchorItem.offset;for(var e=this.anchorScrollTop-this.anchorItem.offset,i=this.anchorItem.index;i>this.firstAttachedItem;)e-=this.items[i-1].height||this.tombstoneHeight,i--;return e},D.prototype._setupAnimations=function(t,e){var i=this;for(var o in t){var n=t[o];this.items[o].node.style.transform="translateY("+(this.anchorScrollTop+n[1])+"px) scale("+this.tombstoneWidth/this.items[o].width+", "+this.tombstoneHeight/this.items[o].height+")",this.items[o].node.offsetTop,n[0].offsetTop,this.items[o].node.style.transition="transform 200ms"}for(var r=this.firstAttachedItem;r<this.lastAttachedItem;r++){var s=t[r];if(s){var a=s[0];a.style.transition="transform 200ms, opacity 200ms",a.style.transform="translateY("+e+"px) scale("+this.items[r].width/this.tombstoneWidth+", "+this.items[r].height/this.tombstoneHeight+")",a.style.opacity=0}e!==this.items[r].top&&(s||(this.items[r].node.style.transition=""),this.items[r].node.style.transform="translateY("+e+"px)"),this.items[r].top=e,e+=this.items[r].height||this.tombstoneHeight}this.scroller.maxScrollY=-(e-this.wrapperEl.offsetHeight+(this.hasMore?et:0)),setTimeout(function(){for(var e in t){var o=t[e];o[0].style.display="none",i.tombstones.push(o[0])}},200)},D.prototype._getTombStone=function(){var t=this.tombstones.pop();return t?(t.style.display="",t.style.opacity=1,t.style.transform="",t.style.transition="",t):this.options.createTombstone()},D.prototype._addItem=function(){this.items.push({data:null,node:null,height:0,width:0,top:0})},D.prototype._calculateAnchoredItem=function(t,e){if(0===e)return t;var i=t.index,o=0;if((e+=t.offset)<0){for(;e<0&&i>0&&this.items[i-1].height;)e+=this.items[i-1].height,i--;o=Math.max(-i,Math.ceil(Math.min(e,0)/this.tombstoneHeight))}else{for(;e>0&&i<this.items.length&&this.items[i].height&&this.items[i].height<e;)e-=this.items[i].height,i++;(i>=this.items.length||!this.items[i].height)&&(o=Math.floor(Math.max(e,0)/this.tombstoneHeight))}return i+=o,e-=o*this.tombstoneHeight,{index:i,offset:e}},function(t){t.prototype._init=function(t,e){this._handleOptions(e),this._events={},this.x=0,this.y=0,this.directionX=0,this.directionY=0,this.setScale(1),this._addDOMEvents(),this._initExtFeatures(),this._watchTransition(),this.options.observeDOM&&this._initDOMObserver(),this.options.autoBlur&&this._handleAutoBlur(),this.refresh(),this.options.snap||this.scrollTo(this.options.startX,this.options.startY),this.enable()},t.prototype.setScale=function(t){this.lastScale=r(this.scale)?t:this.scale,this.scale=t},t.prototype._handleOptions=function(t){this.options=n({},B,t),this.translateZ=this.options.HWCompositing&&A?" translateZ(0)":"",this.options.useTransition=this.options.useTransition&&W,this.options.useTransform=this.options.useTransform&&U,this.options.preventDefault=!this.options.eventPassthrough&&this.options.preventDefault,this.options.scrollX="horizontal"!==this.options.eventPassthrough&&this.options.scrollX,this.options.scrollY="vertical"!==this.options.eventPassthrough&&this.options.scrollY,this.options.freeScroll=this.options.freeScroll&&!this.options.eventPassthrough,this.options.directionLockThreshold=this.options.eventPassthrough?0:this.options.directionLockThreshold,!0===this.options.tap&&(this.options.tap="tap")},t.prototype._addDOMEvents=function(){var t=l;this._handleDOMEvents(t)},t.prototype._removeDOMEvents=function(){var t=h;this._handleDOMEvents(t)},t.prototype._handleDOMEvents=function(t){var e=this.options.bindToWrapper?this.wrapper:window;t(window,"orientationchange",this),t(window,"resize",this),this.options.click&&t(this.wrapper,"click",this,!0),this.options.disableMouse||(t(this.wrapper,"mousedown",this),t(e,"mousemove",this),t(e,"mousecancel",this),t(e,"mouseup",this)),H&&!this.options.disableTouch&&(t(this.wrapper,"touchstart",this),t(e,"touchmove",this),t(e,"touchcancel",this),t(e,"touchend",this)),t(this.scroller,N.transitionEnd,this)},t.prototype._initExtFeatures=function(){this.options.snap&&this._initSnap(),this.options.scrollbar&&this._initScrollbar(),this.options.pullUpLoad&&this._initPullUp(),this.options.pullDownRefresh&&this._initPullDown(),this.options.wheel&&this._initWheel(),this.options.mouseWheel&&this._initMouseWheel(),this.options.zoom&&this._initZoom(),this.options.infinity&&this._initInfinite()},t.prototype._watchTransition=function(){if("function"==typeof Object.defineProperty){var t=this,e=!1,i=this.useTransition?"isInTransition":"isAnimating";Object.defineProperty(this,i,{get:function(){return e},set:function(i){e=i;for(var o=t.scroller.children.length?t.scroller.children:[t.scroller],n=e&&!t.pulling?"none":"auto",r=0;r<o.length;r++)o[r].style.pointerEvents=n}})}},t.prototype._handleAutoBlur=function(){this.on("scrollStart",function(){var t=document.activeElement;!t||"INPUT"!==t.tagName&&"TEXTAREA"!==t.tagName||t.blur()})},t.prototype._initDOMObserver=function(){var t=this;if("undefined"!=typeof MutationObserver){var e=void 0,i=new MutationObserver(function(i){if(!t._shouldNotRefresh()){for(var o=!1,n=!1,r=0;r<i.length;r++){var s=i[r];if("attributes"!==s.type){o=!0;break}if(s.target!==t.scroller){n=!0;break}}o?t.refresh():n&&(clearTimeout(e),e=setTimeout(function(){t._shouldNotRefresh()||t.refresh()},60))}}),o={attributes:!0,childList:!0,subtree:!0};i.observe(this.scroller,o),this.on("destroy",function(){i.disconnect()})}else this._checkDOMUpdate()},t.prototype._shouldNotRefresh=function(){var t=this.x>this.minScrollX||this.x<this.maxScrollX||this.y>this.minScrollY||this.y<this.maxScrollY;return this.isInTransition||this.stopFromTransition||t},t.prototype._checkDOMUpdate=function(){function t(){if(!this.destroyed){i=p(this.scroller);var t=i.width,r=i.height;o===t&&n===r||this.refresh(),o=t,n=r,e.call(this)}}function e(){var e=this;setTimeout(function(){t.call(e)},1e3)}var i=p(this.scroller),o=i.width,n=i.height;e.call(this)},t.prototype.handleEvent=function(t){switch(t.type){case"touchstart":case"mousedown":this._start(t),this.options.zoom&&t.touches&&t.touches.length>1&&this._zoomStart(t);break;case"touchmove":case"mousemove":this.options.zoom&&t.touches&&t.touches.length>1?this._zoom(t):this._move(t);break;case"touchend":case"mouseup":case"touchcancel":case"mousecancel":this.scaled?this._zoomEnd(t):this._end(t);break;case"orientationchange":case"resize":this._resize();break;case"transitionend":case"webkitTransitionEnd":case"oTransitionEnd":case"MSTransitionEnd":this._transitionEnd(t);break;case"click":this.enabled&&!t._constructed&&(f(t.target,this.options.preventDefaultException)||(t.preventDefault(),t.stopPropagation()));break;case"wheel":case"DOMMouseScroll":case"mousewheel":this._onMouseWheel(t)}},t.prototype.refresh=function(){var t="static"===window.getComputedStyle(this.wrapper,null).position,e=p(this.wrapper);this.wrapperWidth=e.width,this.wrapperHeight=e.height;var i=p(this.scroller);this.scrollerWidth=Math.round(i.width*this.scale),this.scrollerHeight=Math.round(i.height*this.scale),this.relativeX=i.left,this.relativeY=i.top,t&&(this.relativeX-=e.left,this.relativeY-=e.top),this.minScrollX=0,this.minScrollY=0;var o=this.options.wheel;o?(this.items=this.scroller.children,this.options.itemHeight=this.itemHeight=this.items.length?this.scrollerHeight/this.items.length:0,void 0===this.selectedIndex&&(this.selectedIndex=o.selectedIndex||0),this.options.startY=-this.selectedIndex*this.itemHeight,this.maxScrollX=0,this.maxScrollY=-this.itemHeight*(this.items.length-1)):(this.maxScrollX=this.wrapperWidth-this.scrollerWidth,this.options.infinity||(this.maxScrollY=this.wrapperHeight-this.scrollerHeight),this.maxScrollX<0?(this.maxScrollX-=this.relativeX,this.minScrollX=-this.relativeX):this.scale>1&&(this.maxScrollX=this.maxScrollX/2-this.relativeX,this.minScrollX=this.maxScrollX),this.maxScrollY<0?(this.maxScrollY-=this.relativeY,this.minScrollY=-this.relativeY):this.scale>1&&(this.maxScrollY=this.maxScrollY/2-this.relativeY,this.minScrollY=this.maxScrollY)),this.hasHorizontalScroll=this.options.scrollX&&this.maxScrollX<this.minScrollX,this.hasVerticalScroll=this.options.scrollY&&this.maxScrollY<this.minScrollY,this.hasHorizontalScroll||(this.maxScrollX=this.minScrollX,this.scrollerWidth=this.wrapperWidth),this.hasVerticalScroll||(this.maxScrollY=this.minScrollY,this.scrollerHeight=this.wrapperHeight),this.endTime=0,this.directionX=0,this.directionY=0,this.wrapperOffset=c(this.wrapper),this.trigger("refresh"),!this.scaled&&this.resetPosition()},t.prototype.enable=function(){this.enabled=!0},t.prototype.disable=function(){this.enabled=!1}}(E),function(t){t.prototype._start=function(t){var e=F[t.type];if((e===z||0===t.button)&&!(!this.enabled||this.destroyed||this.initiated&&this.initiated!==e)){this.initiated=e,this.options.preventDefault&&!f(t.target,this.options.preventDefaultException)&&t.preventDefault(),this.options.stopPropagation&&t.stopPropagation(),this.moved=!1,this.distX=0,this.distY=0,this.directionX=0,this.directionY=0,this.movingDirectionX=0,this.movingDirectionY=0,this.directionLocked=0,this._transitionTime(),this.startTime=o(),this.options.wheel&&(this.target=t.target),this.stop();var i=t.touches?t.touches[0]:t;this.startX=this.x,this.startY=this.y,this.absStartX=this.x,this.absStartY=this.y,this.pointX=i.pageX,this.pointY=i.pageY,this.trigger("beforeScrollStart")}},t.prototype._move=function(t){if(this.enabled&&!this.destroyed&&F[t.type]===this.initiated){this.options.preventDefault&&t.preventDefault(),this.options.stopPropagation&&t.stopPropagation();var e=t.touches?t.touches[0]:t,i=e.pageX-this.pointX,n=e.pageY-this.pointY;this.pointX=e.pageX,this.pointY=e.pageY,this.distX+=i,this.distY+=n;var r=Math.abs(this.distX),s=Math.abs(this.distY),a=o();if(!(a-this.endTime>this.options.momentumLimitTime&&s<this.options.momentumLimitDistance&&r<this.options.momentumLimitDistance)){if(this.directionLocked||this.options.freeScroll||(r>s+this.options.directionLockThreshold?this.directionLocked="h":s>=r+this.options.directionLockThreshold?this.directionLocked="v":this.directionLocked="n"),"h"===this.directionLocked){if("vertical"===this.options.eventPassthrough)t.preventDefault();else if("horizontal"===this.options.eventPassthrough)return void(this.initiated=!1);n=0}else if("v"===this.directionLocked){if("horizontal"===this.options.eventPassthrough)t.preventDefault();else if("vertical"===this.options.eventPassthrough)return void(this.initiated=!1);i=0}i=this.hasHorizontalScroll?i:0,n=this.hasVerticalScroll?n:0,this.movingDirectionX=i>0?J:i<0?K:0,this.movingDirectionY=n>0?Z:n<0?G:0;var l=this.x+i,h=this.y+n,c=!1,u=!1,p=!1,f=!1,d=this.options.bounce;!1!==d&&(c=void 0===d.top||d.top,u=