ripple-core/public/js/fastclick.min.js

Ripple is an interactive audience response system that allows presenters to survey audience members in real time communication through their mobile devices.

/*
 FastClick: polyfill to remove click delays on browsers with touch UIs.

 @version 0.6.7
 @codingstandard ftlabs-jsv2
 @copyright The Financial Times Limited [All Rights Reserved]
 @license MIT License (see LICENSE.txt)
*/
function FastClick(a){var b,c=this;this.trackingClick=!1;this.trackingClickStart=0;this.targetElement=null;this.lastTouchIdentifier=this.touchStartY=this.touchStartX=0;this.touchBoundary=10;this.layer=a;if(!a||!a.nodeType)throw new TypeError("Layer must be a document node");this.onClick=function(){return FastClick.prototype.onClick.apply(c,arguments)};this.onMouse=function(){return FastClick.prototype.onMouse.apply(c,arguments)};this.onTouchStart=function(){return FastClick.prototype.onTouchStart.apply(c,
arguments)};this.onTouchEnd=function(){return FastClick.prototype.onTouchEnd.apply(c,arguments)};this.onTouchCancel=function(){return FastClick.prototype.onTouchCancel.apply(c,arguments)};FastClick.notNeeded(a)||(this.deviceIsAndroid&&(a.addEventListener("mouseover",this.onMouse,!0),a.addEventListener("mousedown",this.onMouse,!0),a.addEventListener("mouseup",this.onMouse,!0)),a.addEventListener("click",this.onClick,!0),a.addEventListener("touchstart",this.onTouchStart,!1),a.addEventListener("touchend",
this.onTouchEnd,!1),a.addEventListener("touchcancel",this.onTouchCancel,!1),Event.prototype.stopImmediatePropagation||(a.removeEventListener=function(b,c,e){var f=Node.prototype.removeEventListener;"click"===b?f.call(a,b,c.hijacked||c,e):f.call(a,b,c,e)},a.addEventListener=function(b,c,e){var f=Node.prototype.addEventListener;"click"===b?f.call(a,b,c.hijacked||(c.hijacked=function(a){a.propagationStopped||c(a)}),e):f.call(a,b,c,e)}),"function"===typeof a.onclick&&(b=a.onclick,a.addEventListener("click",
function(a){b(a)},!1),a.onclick=null))}FastClick.prototype.deviceIsAndroid=0<navigator.userAgent.indexOf("Android");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!0;break;case "input":if(this.deviceIsIOS&&"file"===a.type||a.disabled)return!0;break;case "label":case "video":return!0}return/\bneedsclick\b/.test(a.className)};
FastClick.prototype.needsFocus=function(a){switch(a.nodeName.toLowerCase()){case "textarea":case "select":return!0;case "input":switch(a.type){case "button":case "checkbox":case "file":case "image":case "radio":case "submit":return!1}return!a.disabled&&!a.readOnly;default:return/\bneedsfocus\b/.test(a.className)}};
FastClick.prototype.sendClick=function(a,b){var c,d;document.activeElement&&document.activeElement!==a&&document.activeElement.blur();d=b.changedTouches[0];c=document.createEvent("MouseEvents");c.initMouseEvent("click",!0,!0,window,1,d.screenX,d.screenY,d.clientX,d.clientY,!1,!1,!1,!1,0,null);c.forwardedTouchEvent=!0;a.dispatchEvent(c)};FastClick.prototype.focus=function(a){var b;this.deviceIsIOS&&a.setSelectionRange?(b=a.value.length,a.setSelectionRange(b,b)):a.focus()};
FastClick.prototype.updateScrollParent=function(a){var b,c;b=a.fastClickScrollParent;if(!b||!b.contains(a)){c=a;do{if(c.scrollHeight>c.offsetHeight){b=c;a.fastClickScrollParent=c;break}c=c.parentElement}while(c)}b&&(b.fastClickLastScrollTop=b.scrollTop)};FastClick.prototype.getTargetElementFromEventTarget=function(a){return a.nodeType===Node.TEXT_NODE?a.parentNode:a};
FastClick.prototype.onTouchStart=function(a){var b,c,d;if(1<a.targetTouches.length)return!0;b=this.getTargetElementFromEventTarget(a.target);c=a.targetTouches[0];if(this.deviceIsIOS){d=window.getSelection();if(d.rangeCount&&!d.isCollapsed)return!0;if(!this.deviceIsIOS4){if(c.identifier===this.lastTouchIdentifier)return a.preventDefault(),!1;this.lastTouchIdentifier=c.identifier;this.updateScrollParent(b)}}this.trackingClick=!0;this.trackingClickStart=a.timeStamp;this.targetElement=b;this.touchStartX=
c.pageX;this.touchStartY=c.pageY;200>a.timeStamp-this.lastClickTime&&a.preventDefault();return!0};FastClick.prototype.touchHasMoved=function(a){a=a.changedTouches[0];var b=this.touchBoundary;return Math.abs(a.pageX-this.touchStartX)>b||Math.abs(a.pageY-this.touchStartY)>b?!0:!1};FastClick.prototype.findControl=function(a){return void 0!==a.control?a.control:a.htmlFor?document.getElementById(a.htmlFor):a.querySelector("button, input:not([type=hidden]), keygen, meter, output, progress, select, textarea")};
FastClick.prototype.onTouchEnd=function(a){var b,c,d;d=this.targetElement;this.touchHasMoved(a)&&(this.trackingClick=!1,this.targetElement=null);if(!this.trackingClick)return!0;if(200>a.timeStamp-this.lastClickTime)return this.cancelNextClick=!0;this.lastClickTime=a.timeStamp;b=this.trackingClickStart;this.trackingClick=!1;this.trackingClickStart=0;this.deviceIsIOSWithBadTarget&&(d=a.changedTouches[0],d=document.elementFromPoint(d.pageX-window.pageXOffset,d.pageY-window.pageYOffset));c=d.tagName.toLowerCase();
if("label"===c){if(b=this.findControl(d)){this.focus(d);if(this.deviceIsAndroid)return!1;d=b}}else if(this.needsFocus(d)){if(100<a.timeStamp-b||this.deviceIsIOS&&window.top!==window&&"input"===c)return this.targetElement=null,!1;this.focus(d);if(!this.deviceIsIOS4||"select"!==c)this.targetElement=null,a.preventDefault();return!1}if(this.deviceIsIOS&&!this.deviceIsIOS4&&(b=d.fastClickScrollParent)&&b.fastClickLastScrollTop!==b.scrollTop)return!0;this.needsClick(d)||(a.preventDefault(),this.sendClick(d,
a));return!1};FastClick.prototype.onTouchCancel=function(){this.trackingClick=!1;this.targetElement=null};FastClick.prototype.onMouse=function(a){return!this.targetElement||a.forwardedTouchEvent||!a.cancelable?!0:!this.needsClick(this.targetElement)||this.cancelNextClick?(a.stopImmediatePropagation?a.stopImmediatePropagation():a.propagationStopped=!0,a.stopPropagation(),a.preventDefault(),!1):!0};
FastClick.prototype.onClick=function(a){if(this.trackingClick)return this.targetElement=null,this.trackingClick=!1,!0;if("submit"===a.target.type&&0===a.detail)return!0;a=this.onMouse(a);a||(this.targetElement=null);return a};
FastClick.prototype.destroy=function(){var a=this.layer;this.deviceIsAndroid&&(a.removeEventListener("mouseover",this.onMouse,!0),a.removeEventListener("mousedown",this.onMouse,!0),a.removeEventListener("mouseup",this.onMouse,!0));a.removeEventListener("click",this.onClick,!0);a.removeEventListener("touchstart",this.onTouchStart,!1);a.removeEventListener("touchend",this.onTouchEnd,!1);a.removeEventListener("touchcancel",this.onTouchCancel,!1)};
FastClick.notNeeded=function(a){var b;if("undefined"===typeof window.ontouchstart)return!0;if(/Chrome\/[0-9]+/.test(navigator.userAgent))if(FastClick.prototype.deviceIsAndroid){if((b=document.querySelector("meta[name=viewport]"))&&-1!==b.content.indexOf("user-scalable=no"))return!0}else return!0;return"none"===a.style.msTouchAction?!0:!1};FastClick.attach=function(a){return new FastClick(a)};
"undefined"!==typeof define&&define.amd?define(function(){return FastClick}):"undefined"!==typeof module&&module.exports?(module.exports=FastClick.attach,module.exports.FastClick=FastClick):window.FastClick=FastClick;