fastclick.min.js

function FastClick(b){var c,a=this;this.trackingClick=false;this.trackingClickStart=0;this.targetElement=null;this.touchStartX=0;this.touchStartY=0;this.lastTouchIdentifier=0;this.touchBoundary=10;this.layer=b;if(!b||!b.nodeType){throw new TypeError("Layer must be a document node");}this.onClick=function(){return FastClick.prototype.onClick.apply(a,arguments);};this.onMouse=function(){return FastClick.prototype.onMouse.apply(a,arguments);};this.onTouchStart=function(){return FastClick.prototype.onTouchStart.apply(a,arguments);};this.onTouchMove=function(){return FastClick.prototype.onTouchMove.apply(a,arguments);};this.onTouchEnd=function(){return FastClick.prototype.onTouchEnd.apply(a,arguments);};this.onTouchCancel=function(){return FastClick.prototype.onTouchCancel.apply(a,arguments);};if(FastClick.notNeeded(b)){return;}if(this.deviceIsAndroid){b.addEventListener("mouseover",this.onMouse,true);b.addEventListener("mousedown",this.onMouse,true);b.addEventListener("mouseup",this.onMouse,true);}b.addEventListener("click",this.onClick,true);b.addEventListener("touchstart",this.onTouchStart,false);b.addEventListener("touchmove",this.onTouchMove,false);b.addEventListener("touchend",this.onTouchEnd,false);b.addEventListener("touchcancel",this.onTouchCancel,false);if(!Event.prototype.stopImmediatePropagation){b.removeEventListener=function(e,g,d){var f=Node.prototype.removeEventListener;if(e==="click"){f.call(b,e,g.hijacked||g,d);}else{f.call(b,e,g,d);}};b.addEventListener=function(f,g,e){var d=Node.prototype.addEventListener;if(f==="click"){d.call(b,f,g.hijacked||(g.hijacked=function(h){if(!h.propagationStopped){g(h);}}),e);}else{d.call(b,f,g,e);}};}if(typeof b.onclick==="function"){c=b.onclick;b.addEventListener("click",function(d){c(d);},false);b.onclick=null;}}FastClick.prototype.deviceIsAndroid=navigator.userAgent.indexOf("Android")>0;FastClick.prototype.deviceIsIOS=/iP(ad|hone|od)/.test(navigator.userAgent);FastClick.prototype.deviceIsIOS4=FastClick.prototype.deviceIsIOS&&(/OS 4_\d(_\d)?/).test(navigator.userAgent);FastClick.prototype.deviceIsIOSWithBadTarget=FastClick.prototype.deviceIsIOS&&(/OS ([6-9]|\d{2})_\d/).test(navigator.userAgent);FastClick.prototype.needsClick=function(a){switch(a.nodeName.toLowerCase()){case"button":case"select":case"textarea":if(a.disabled){return true;}break;case"input":if((this.deviceIsIOS&&a.type==="file")||a.disabled){return true;}break;case"label":case"video":return true;}return(/\bneedsclick\b/).test(a.className);};FastClick.prototype.needsFocus=function(a){switch(a.nodeName.toLowerCase()){case"textarea":return true;case"select":return !this.deviceIsAndroid;case"input":switch(a.type){case"button":case"checkbox":case"file":case"image":case"radio":case"submit":return false;}return !a.disabled&&!a.readOnly;default:return(/\bneedsfocus\b/).test(a.className);}};FastClick.prototype.sendClick=function(b,c){var a,d;if(document.activeElement&&document.activeElement!==b){document.activeElement.blur();}d=c.changedTouches[0];a=document.createEvent("MouseEvents");a.initMouseEvent(this.determineEventType(b),true,true,window,1,d.screenX,d.screenY,d.clientX,d.clientY,false,false,false,false,0,null);a.forwardedTouchEvent=true;b.dispatchEvent(a);};FastClick.prototype.determineEventType=function(a){if(this.deviceIsAndroid&&a.tagName.toLowerCase()==="select"){return"mousedown";}return"click";};FastClick.prototype.focus=function(a){var b;if(this.deviceIsIOS&&a.setSelectionRange&&a.type.indexOf("date")!==0&&a.type!=="time"){b=a.value.length;a.setSelectionRange(b,b);}else{a.focus();}};FastClick.prototype.updateScrollParent=function(b){var c,a;c=b.fastClickScrollParent;if(!c||!c.contains(b)){a=b;do{if(a.scrollHeight>a.offsetHeight){c=a;b.fastClickScrollParent=a;break;}a=a.parentElement;}while(a);}if(c){c.fastClickLastScrollTop=c.scrollTop;}};FastClick.prototype.getTargetElementFromEventTarget=function(a){if(a.nodeType===Node.TEXT_NODE){return a.parentNode;}return a;};FastClick.prototype.onTouchStart=function(c){var a,d,b;if(c.targetTouches.length>1){return true;}a=this.getTargetElementFromEventTarget(c.target);d=c.targetTouches[0];if(this.deviceIsIOS){b=window.getSelection();if(b.rangeCount&&!b.isCollapsed){return true;}if(!this.deviceIsIOS4){if(d.identifier===this.lastTouchIdentifier){c.preventDefault();return false;}this.lastTouchIdentifier=d.identifier;this.updateScrollParent(a);}}this.trackingClick=true;this.trackingClickStart=c.timeStamp;this.targetElement=a;this.touchStartX=d.pageX;this.touchStartY=d.pageY;if((c.timeStamp-this.lastClickTime)<200){c.preventDefault();}return true;};FastClick.prototype.touchHasMoved=function(a){var c=a.changedTouches[0],b=this.touchBoundary;if(Math.abs(c.pageX-this.touchStartX)>b||Math.abs(c.pageY-this.touchStartY)>b){return true;}return false;};FastClick.prototype.onTouchMove=function(a){if(!this.trackingClick){return true;}if(this.targetElement!==this.getTargetElementFromEventTarget(a.target)||this.touchHasMoved(a)){this.trackingClick=false;this.targetElement=null;}return true;};FastClick.prototype.findControl=function(a){if(a.control!==undefined){return a.control;}if(a.htmlFor){return document.getElementById(a.htmlFor);}return a.querySelector("button, input:not([type=hidden]), keygen, meter, output, progress, select, textarea");};FastClick.prototype.onTouchEnd=function(c){var e,d,b,g,f,a=this.targetElement;if(!this.trackingClick){return true;}if((c.timeStamp-this.lastClickTime)<200){this.cancelNextClick=true;return true;}this.cancelNextClick=false;this.lastClickTime=c.timeStamp;d=this.trackingClickStart;this.trackingClick=false;this.trackingClickStart=0;if(this.deviceIsIOSWithBadTarget){f=c.changedTouches[0];a=document.elementFromPoint(f.pageX-window.pageXOffset,f.pageY-window.pageYOffset)||a;a.fastClickScrollParent=this.targetElement.fastClickScrollParent;}b=a.tagName.toLowerCase();if(b==="label"){e=this.findControl(a);if(e){this.focus(a);if(this.deviceIsAndroid){return false;}a=e;}}else{if(this.needsFocus(a)){if((c.timeStamp-d)>100||(this.deviceIsIOS&&window.top!==window&&b==="input")){this.targetElement=null;return false;}this.focus(a);if(!this.deviceIsIOS4||b!=="select"){this.targetElement=null;c.preventDefault();}return false;}}if(this.deviceIsIOS&&!this.deviceIsIOS4){g=a.fastClickScrollParent;if(g&&g.fastClickLastScrollTop!==g.scrollTop){return true;}}if(!this.needsClick(a)){c.preventDefault();this.sendClick(a,c);}return false;};FastClick.prototype.onTouchCancel=function(){this.trackingClick=false;this.targetElement=null;};FastClick.prototype.onMouse=function(a){if(!this.targetElement){return true;}if(a.forwardedTouchEvent){return true;}if(!a.cancelable){return true;}if(!this.needsClick(this.targetElement)||this.cancelNextClick){if(a.stopImmediatePropagation){a.stopImmediatePropagation();}else{a.propagationStopped=true;}a.stopPropagation();a.preventDefault();return false;}return true;};FastClick.prototype.onClick=function(a){var b;if(this.trackingClick){this.targetElement=null;this.trackingClick=false;return true;}if(a.target.type==="submit"&&a.detail===0){return true;}b=this.onMouse(a);if(!b){this.targetElement=null;}return b;};FastClick.prototype.destroy=function(){var a=this.layer;if(this.deviceIsAndroid){a.removeEventListener("mouseover",this.onMouse,true);a.removeEventListener("mousedown",this.onMouse,true);a.removeEventListener("mouseup",this.onMouse,true);}a.removeEventListener("click",this.onClick,true);a.removeEventListener("touchstart",this.onTouchStart,false);a.removeEventListener("touchmove",this.onTouchMove,false);a.removeEventListener("touchend",this.onTouchEnd,false);a.removeEventListener("touchcancel",this.onTouchCancel,false);};FastClick.notNeeded=function(b){var a;var c;if(typeof window.ontouchstart==="undefined"){return true;}c=+(/Chrome\/([0-9]+)/.exec(navigator.userAgent)||[,0])[1];if(c){if(FastClick.prototype.deviceIsAndroid){a=document.querySelector("meta[name=viewport]");if(a){if(a.content.indexOf("user-scalable=no")!==-1){return true;}if(c>31&&window.innerWidth<=window.screen.width){return true;}}}else{return true;}}if(b.style.msTouchAction==="none"){return true;}return false;};FastClick.attach=function(a){return new FastClick(a);};if(typeof define!=="undefined"&&define.amd){define(function(){return FastClick;});}else{if(typeof module!=="undefined"&&module.exports){module.exports=FastClick.attach;module.exports.FastClick=FastClick;}else{window.FastClick=FastClick;}}