Team:Jiangnan China/jssweetscroll

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e=this.el,i=this.props,o=this.options,r=this.startTime,l=this.startProps,u=this.easing,a=o.duration,c=o.step,h={},f=t-r,p=gt(1,vt(f/a,0));s(i,function(t,n){var e=l[n],i=t-e;if(0===i)return!0;var o=u(p,a*p,0,1,a);h[n]=yt(e+i*o)}),s(h,function(t,n){x(e,t,n)}),f<=a?(c.call(this,p,h),this.rafId=Tt(function(t){return n._loop(t)})):this.stop(!0)}},{key:"calcStartProps",value:function(t,n){var e={x:_(this.el,"x"),y:_(this.el,"y")};if(this.options.quickMode){var i=I(this.el),o=i.viewport,r=o.width,l=o.height;ht(e.y-n)>l&&(e.y=e.y>n?n+l:n-l),ht(e.x-t)>r&&(e.x=e.x>t?t+r:t-r)}return e}}]),t}(),Pt=function(){return Ot?"onwheel"in xt?"wheel":"onmousewheel"in xt?"mousewheel":"DOMMouseScroll":"wheel"}(),Qt=Pt+", touchstart, touchmove",Wt=function(){function t(){var n=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},e=arguments.length>1&&void 0!==arguments[1]?arguments[1]:"body, html";mt(this,t),this.isSSR=!Ot,this.options=c({},t.defaults,n),this.container=this.getContainer(e),null==this.container?(this.header=null,this.tween=null,this.isSSR||(/comp|inter|loaded/.test(xt.readyState)?this.log('Not found scrollable container. => "'+e+'"'):this.log("Should be initialize later than DOMContentLoaded."))):(this.header=p(this.options.header),this.tween=new Dt(this.container),this._trigger=null,this._shouldCallCancelScroll=!1,this.bindContainerClick())}return kt(t,[{key:"log",value:function(t){this.options.outputLog&&f("[SweetScroll] "+t)}},{key:"getScrollOffset",value:function(t,n){var i=this.container,o=this.header,r=this.parseCoodinate(n.offset),l=this.parseCoodinate(t);if(!l&&e(t))if("#"===t)l={top:0,left:0};else{var u=p(t),a=L(u,i);if(!a)return;l=a}return l?(r&&(l.top+=r.top,l.left+=r.left),o&&(l.top=vt(0,l.top-w(o).height)),l):null}},{key:"normalizeScrollOffset",value:function(t,n){var e=this.container,i=c({},t),o=I(e),r=o.viewport,l=o.size;return i.top=n.verticalScroll?vt(0,gt(l.height-r.height,i.top)):_(e,"y"),i.left=n.horizontalScroll?vt(0,gt(l.width-r.width,i.left)):_(e,"x"),i}},{key:"to",value:function(t){var n=this,i=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};if(!this.isSSR){var o=this.container,r=c({},this.options,i),l=this._trigger,u=e(t)&&/^#/.test(t)?t:null;if(this._options=r,this._trigger=null,this._shouldCallCancelScroll=!1,this.stop(),!o)return this.log("Not found container element.");var a=this.getScrollOffset(t,r);if(!a)return this.log("Invalid parameter of distance. => "+t);if(this.hook(r,"beforeScroll",a,l)===!1)return void(this._options=null);a=this.normalizeScrollOffset(a,r),this.tween.run(a.left,a.top,{duration:r.duration,delay:r.delay,easing:r.easing,quickMode:r.quickMode,complete:function(){null!=u&&u!==_t.location.hash&&n.updateURLHash(u,r.updateURL),n.unbindContainerStop(),n._options=null,n._shouldCallCancelScroll?n.hook(r,"cancelScroll"):n.hook(r,"afterScroll",a,l),n.hook(r,"completeScroll",n._shouldCallCancelScroll)},step:function(t,e){n.hook(r,"stepScroll",t,e)}}),this.bindContainerStop()}}},{key:"toTop",value:function(t){var n=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};this.to(t,c({},n,{verticalScroll:!0,horizontalScroll:!1}))}},{key:"toLeft",value:function(t){var n=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};this.to(t,c({},n,{verticalScroll:!1,horizontalScroll:!0}))}},{key:"toElement",value:function(t){var n=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};if(!this.isSSR)if(t instanceof Element){var e=L(t,this.container);this.to(e,c({},n))}else this.log("Invalid parameter.")}},{key:"stop",value:function(){var t=arguments.length>0&&void 0!==arguments[0]&&arguments[0];this.isSSR||(this.container?(this._stopScrollListener&&(this._shouldCallCancelScroll=!0),this.tween.stop(t)):this.log("Not found scrollable container."))}},{key:"update",value:function(){var t=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};this.container?(this.stop(),this.unbindContainerClick(),this.unbindContainerStop(),this.options=c({},this.options,t),this.header=p(this.options.header),this.bindContainerClick()):this.isSSR||this.log("Not found scrollable container.")}},{key:"destroy",value:function(){this.container?(this.stop(),this.unbindContainerClick(),this.unbindContainerStop(),this.container=null,this.header=null,this.tween=null):this.isSSR||this.log("Not found scrollable 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t=this.container;t&&this._stopScrollListener&&(A(t,Qt,this._stopScrollListener),this._stopScrollListener=null)}},{key:"hook",value:function(t,n){for(var e=t[n],o=arguments.length,r=Array(o>2?o-2:0),l=2;l<o;l++)r[l-2]=arguments[l];if(i(e)){var u=e.apply(this,r);if("undefined"==typeof u)return u}return this[n].apply(this,r)}},{key:"handleStopScroll",value:function(t){var n=this._options?this._options.stopScroll:this.options.stopScroll;n?this.stop():t.preventDefault()}},{key:"handleContainerClick",value:function(t){for(var n=this.options,e=t.target;e&&e!==xt;e=e.parentNode)if(v(e,n.trigger)){var i=e.getAttribute("data-scroll"),o=this.parseDataOptions(e),r=i||e.getAttribute("href");n=c({},n,o),n.preventDefault&&t.preventDefault(),n.stopPropagation&&t.stopPropagation(),this._trigger=e,n.horizontalScroll&&n.verticalScroll?this.to(r,n):n.verticalScroll?this.toTop(r,n):n.horizontalScroll&&this.toLeft(r,n)}}},{key:"parseDataOptions",value:function(t){var n=t.getAttribute("data-scroll-options");return n?JSON.parse(n):{}}}]),t}();return Wt.defaults={trigger:"[data-scroll]",header:"[data-scroll-header]",duration:1e3,delay:0,easing:"easeOutQuint",offset:0,verticalScroll:!0,horizontalScroll:!1,stopScroll:!0,updateURL:!1,preventDefault:!0,stopPropagation:!0,outputLog:!1,quickMode:!1,beforeScroll:null,afterScroll:null,cancelScroll:null,completeScroll:null,stepScroll:null},Wt});