| H A D | platform.js | 32 function PointerGestureEvent(a,b){var c=b||{},d=document.createEvent("Event"),e={bubbles:Boolean(c.bubbles)===c.bubbles||!0,cancelable:Boolean(c.cancelable)===c.cancelable||!0};d.initEvent(a,e.bubbles,e.cancelable);for(var f,g=Object.keys(c),h=0;h<g.length;h++)f=g[h],d[f]=c[f];return d.preventTap=this.preventTap,d}"undefined"==typeof WeakMap&&!function(){var a=Object.defineProperty,b=Date.now()%1e9,c=function(){this.name="__st"+(1e9*Math.random()>>>0)+(b++ +"__")};c.prototype={set:function(b,c){var d=b[this.name];d&&d[0]===b?d[1]=c:a(b,this.name,{value:[b,c],writable:!0})},get:function(a){var b;return(b=a[this.name])&&b[0]===a?b[1]:void 0},"delete":function(a){this.set(a,void 0)}},window.WeakMap=c}(),function(global){"use strict";function detectObjectObserve(){function a(a){b=a}if("function"!=typeof Object.observe||"function"!=typeof Array.observe)return!1;var b=[],c={},d=[];return Object.observe(c,a),Array.observe(d,a),c.id=1,c.id=2,delete c.id,d.push(1,2),d.length=0,Object.deliverChangeRecords(a),5!==b.length?!1:"add"!=b[0].type||"update"!=b[1].type||"delete"!=b[2].type||"splice"!=b[3].type||"splice"!=b[4].type?!1:(Object.unobserve(c,a),Array.unobserve(d,a),!0)}function detectEval(){if(global.document&&"securityPolicy"in global.document&&!global.document.securityPolicy.allowsEval)return!1;try{var a=new Function("","return true;");return a()}catch(b){return!1}}function isIndex(a){return+a===a>>>0}function toNumber(a){return+a}function isObject(a){return a===Object(a)}function areSameValue(a,b){return a===b?0!==a||1/a===1/b:numberIsNaN(a)&&numberIsNaN(b)?!0:a!==a&&b!==b}function isPathValid(a){return"string"!=typeof a?!1:(a=a.trim(),""==a?!0:"."==a[0]?!1:pathRegExp.test(a))}function Path(a,b){if(b!==constructorIsPrivate)throw Error("Use Path.get to retrieve path objects");return""==a.trim()?this:isIndex(a)?(this.push(a),this):(a.split(/\s*\.\s*/).filter(function(a){return a}).forEach(function(a){this.push(a)},this),void(hasEval&&this.length&&(this.getValueFrom=this.compiledGetValueFromFn())))}function getPath(a){if(a instanceof Path)return a;null==a&&(a=""),"string"!=typeof a&&(a=String(a));var b=pathCache[a];if(b)return b;if(!isPathValid(a))return invalidPath;var b=new Path(a,constructorIsPrivate);return pathCache[a]=b,b}function dirtyCheck(a){for(var b=0;MAX_DIRTY_CHECK_CYCLES>b&&a.check_();)b++;return global.testingExposeCycleCount&&(global.dirtyCheckCycleCount=b),b>0}function objectIsEmpty(a){for(var b in a)return!1;return!0}function diffIsEmpty(a){return objectIsEmpty(a.added)&&objectIsEmpty(a.removed)&&objectIsEmpty(a.changed)}function diffObjectFromOldObject(a,b){var c={},d={},e={};for(var f in b){var g=a[f];(void 0===g||g!==b[f])&&(f in a?g!==b[f]&&(e[f]=g):d[f]=void 0)}for(var f in a)f in b||(c[f]=a[f]);return Array.isArray(a)&&a.length!==b.length&&(e.length=a.length),{added:c,removed:d,changed:e}}function runEOMTasks(){if(!eomTasks.length)return!1;for(var a=0;a<eomTasks.length;a++)eomTasks[a]();return eomTasks.length=0,!0}function newObservedObject(){function a(a){b&&b.state_===OPENED&&!d&&b.check_(a)}var b,c,d=!1,e=!0;return{open:function(c){if(b)throw Error("ObservedObject in use");e||Object.deliverChangeRecords(a),b=c,e=!1},observe:function(b,d){c=b,d?Array.observe(c,a):Object.observe(c,a)},deliver:function(b){d=b,Object.deliverChangeRecords(a),d=!1},close:function(){b=void 0,Object.unobserve(c,a),observedObjectCache.push(this)}}}function getObservedObject(a,b,c){var d=observedObjectCache.pop()||newObservedObject();return d.open(a),d.observe(b,c),d}function newObservedSet(){function a(b){if(b){var c=i.indexOf(b);c>=0?(i[c]=void 0,h.push(b)):h.indexOf(b)<0&&(h.push(b),Object.observe(b,e)),a(Object.getPrototypeOf(b))}}function b(){var b=i===emptyArray?[]:i;i=h,h=b;var c;for(var d in f)c=f[d],c&&c.state_==OPENED&&c.iterateObjects_(a);for(var g=0;g<i.length;g++){var j=i[g];j&&Object.unobserve(j,e)}i.length=0}function c(){k=!1,j&&b()}function d(){k||(j=!0,k=!0,runEOM(c))}function e(){b();var a;for(var c in f)a=f[c],a&&a.state_==OPENED&&a.check_()}var f=[],g=0,h=[],i=emptyArray,j=!1,k=!1,l={object:void 0,objects:h,open:function(b){f[b.id_]=b,g++,b.iterateObjects_(a)},close:function(a){if(f[a.id_]=void 0,g--,g)return void d();j=!1;for(var b=0;b<h.length;b++)Object.unobserve(h[b],e),Observer.unobservedCount++;f.length=0,h.length=0,observedSetCache.push(this)},reset:d};return l}function getObservedSet(a,b){return lastObservedSet&&lastObservedSet.object===b||(lastObservedSet=observedSetCache.pop()||newObservedSet(),lastObservedSet.object=b),lastObservedSet.open(a),lastObservedSet}function Observer(){this.state_=UNOPENED,this.callback_=void 0,this.target_=void 0,this.directObserver_=void 0,this.value_=void 0,this.id_=nextObserverId++}function addToAll(a){Observer._allObserversCount++,collectObservers&&allObservers.push(a)}function removeFromAll(){Observer._allObserversCount--}function ObjectObserver(a){Observer.call(this),this.value_=a,this.oldObject_=void 0}function ArrayObserver(a){if(!Array.isArray(a))throw Error("Provided object is not an Array");ObjectObserver.call(this,a)}function PathObserver(a,b){Observer.call(this),this.object_=a,this.path_=b instanceof Path?b:getPath(b),this.directObserver_=void 0}function CompoundObserver(){Observer.call(this),this.value_=[],this.directObserver_=void 0,this.observed_=[]}function identFn(a){return a}function ObserverTransform(a,b,c,d){this.callback_=void 0,this.target_=void 0,this.value_=void 0,this.observable_=a,this.getValueFn_=b||identFn,this.setValueFn_=c||identFn,this.dontPassThroughSet_=d}function notifyFunction(a,b){if("function"==typeof Object.observe){var c=Object.getNotifier(a);return function(d,e){var f={object:a,type:d,name:b};2===arguments.length&&(f.oldValue=e),c.notify(f)}}}function diffObjectFromChangeRecords(a,b,c){for(var d={},e={},f=0;f<b.length;f++){var g=b[f];expectedRecordTypes[g.type]?(g.name in c||(c[g.name]=g.oldValue),"update"!=g.type&&("add"!=g.type?g.name in d?(delete d[g.name],delete c[g.name]):e[g.name]=!0:g.name in e?delete e[g.name]:d[g.name]=!0)):(console.error("Unknown changeRecord type: "+g.type),console.error(g))}for(var h in d)d[h]=a[h];for(var h in e)e[h]=void 0;var i={};for(var h in c)if(!(h in d||h in e)){var j=a[h];c[h]!==j&&(i[h]=j)}return{added:d,removed:e,changed:i}}function newSplice(a,b,c){return{index:a,removed:b,addedCount:c}}function ArraySplice(){}function calcSplices(a,b,c,d,e,f){return arraySplice.calcSplices(a,b,c,d,e,f)}function intersect(a,b,c,d){return c>b||a>d?-1:b==c||d==a?0:c>a?d>b?b-c:d-c:b>d?d-a:b-a}function mergeSplice(a,b,c,d){for(var e=newSplice(b,c,d),f=!1,g=0,h=0;h<a.length;h++){var i=a[h];if(i.index+=g,!f){var j=intersect(e.index,e.index+e.removed.length,i.index,i.index+i.addedCount);if(j>=0){a.splice(h,1),h--,g-=i.addedCount-i.removed.length,e.addedCount+=i.addedCount-j;var k=e.removed.length+i.removed.length-j;if(e.addedCount||k){var c=i.removed;if(e.index<i.index){var l=e.removed.slice(0,i.index-e.index);Array.prototype.push.apply(l,c),c=l}if(e.index+e.removed.length>i.index+i.addedCount){var m=e.removed.slice(i.index+i.addedCount-e.index);Array.prototype.push.apply(c,m)}e.removed=c,i.index<e.index&&(e.index=i.index)}else f=!0}else if(e.index<i.index){f=!0,a.splice(h,0,e),h++;var n=e.addedCount-e.removed.length;i.index+=n,g+=n}}}f||a.push(e)}function createInitialSplices(a,b){for(var c=[],d=0;d<b.length;d++){var e=b[d];switch(e.type){case"splice":mergeSplice(c,e.index,e.removed.slice(),e.addedCount);break;case"add":case"update":case"delete":if(!isIndex(e.name))continue;var f=toNumber(e.name);if(0>f)continue;mergeSplice(c,f,[e.oldValue],1);break;default:console.error("Unexpected record type: "+JSON.stringify(e))}}return c}function projectArraySplices(a,b){var c=[];return createInitialSplices(a,b).forEach(function(b){return 1==b.addedCount&&1==b.removed.length?void(b.removed[0]!==a[b.index]&&c.push(b)):void(c=c.concat(calcSplices(a,b.index,b.index+b.addedCount,b.removed,0,b.removed.length)))}),c}var hasObserve=detectObjectObserve(),hasEval=detectEval(),numberIsNaN=global.Number.isNaN||function(a){return"number"==typeof a&&global.isNaN(a)},createObject="__proto__"in{}?function(a){return a}:function(a){var b=a.__proto__;if(!b)return a;var c=Object.create(b);return Object.getOwnPropertyNames(a).forEach(function(b){Object.defineProperty(c,b,Object.getOwnPropertyDescriptor(a,b))}),c},identStart="[$_a-zA-Z]",identPart="[$_a-zA-Z0-9]",ident=identStart+"+"+identPart+"*",elementIndex="(?:[0-9]|[1-9]+[0-9]+)",identOrElementIndex="(?:"+ident+"|"+elementIndex+")",path="(?:"+identOrElementIndex+")(?:\\s*\\.\\s*"+identOrElementIndex+")*",pathRegExp=new RegExp("^"+path+"$"),constructorIsPrivate={},pathCache={};Path.get=getPath,Path.prototype=createObject({__proto__:[],valid:!0,toString:function(){return this.join(".")},getValueFrom:function(a){for(var b=0;b<this.length;b++){if(null==a)return;a=a[this[b]]}return a},iterateObjects:function(a,b){for(var c=0;c<this.length;c++){if(c&&(a=a[this[c-1]]),!isObject(a))return;b(a)}},compiledGetValueFromFn:function(){var a=this.map(function(a){return isIndex(a)?'["'+a+'"]':"."+a}),b="",c="obj";b+="if (obj != null";for(var d=0;d<this.length-1;d++){{this[d]}c+=a[d],b+=" &&\n "+c+" != null"}return b+=")\n",c+=a[d],b+=" return "+c+";\nelse\n return undefined;",new Function("obj",b)},setValueFrom:function(a,b){if(!this.length)return!1;for(var c=0;c<this.length-1;c++){if(!isObject(a))return!1;a=a[this[c]]}return isObject(a)?(a[this[c]]=b,!0):!1}});var invalidPath=new Path("",constructorIsPrivate);invalidPath.valid=!1,invalidPath.getValueFrom=invalidPath.setValueFrom=function(){};var MAX_DIRTY_CHECK_CYCLES=1e3,eomTasks=[],runEOM=hasObserve?function(){var a={pingPong:!0},b=!1;return Object.observe(a,function(){runEOMTasks(),b=!1}),function(c){eomTasks.push(c),b||(b=!0,a.pingPong=!a.pingPong)}}():function(){return function(a){eomTasks.push(a)}}(),observedObjectCache=[],emptyArray=[],observedSetCache=[],lastObservedSet,UNOPENED=0,OPENED=1,CLOSED=2,RESETTING=3,nextObserverId=1;Observer.prototype={open:function(a,b){if(this.state_!=UNOPENED)throw Error("Observer has already been opened.");return addToAll(this),this.callback_=a,this.target_=b,this.state_=OPENED,this.connect_(),this.value_},close:function(){this.state_==OPENED&&(removeFromAll(this),this.state_=CLOSED,this.disconnect_(),this.value_=void 0,this.callback_=void 0,this.target_=void 0)},deliver:function(){this.state_==OPENED&&dirtyCheck(this)},report_:function(a){try{this.callback_.apply(this.target_,a)}catch(b){Observer._errorThrownDuringCallback=!0,console.error("Exception caught during observer callback: "+(b.stack||b))}},discardChanges:function(){return this.check_(void 0,!0),this.value_}};var collectObservers=!hasObserve,allObservers;Observer._allObserversCount=0,collectObservers&&(allObservers=[]);var runningMicrotaskCheckpoint=!1,hasDebugForceFullDelivery=hasObserve&&function(){try{return eval("%RunMicrotasks()"),!0}catch(ex){return!1}}();global.Platform=global.Platform||{},global.Platform.performMicrotaskCheckpoint=function(){if(!runningMicrotaskCheckpoint){if(hasDebugForceFullDelivery)return void eval("%RunMicrotasks()");if(collectObservers){runningMicrotaskCheckpoint=!0;var cycles=0,anyChanged,toCheck;do{cycles++,toCheck=allObservers,allObservers=[],anyChanged=!1;for(var i=0;i<toCheck.length;i++){var observer=toCheck[i];observer.state_==OPENED&&(observer.check_()&&(anyChanged=!0),allObservers.push(observer))}runEOMTasks()&&(anyChanged=!0)}while(MAX_DIRTY_CHECK_CYCLES>cycles&&anyChanged);global.testingExposeCycleCount&&(global.dirtyCheckCycleCount=cycles),runningMicrotaskCheckpoint=!1}}},collectObservers&&(global.Platform.clearObservers=function(){allObservers=[]}),ObjectObserver.prototype=createObject({__proto__:Observer.prototype,arrayObserve:!1,connect_:function(){hasObserve?this.directObserver_=getObservedObject(this,this.value_,this.arrayObserve):this.oldObject_=this.copyObject(this.value_)},copyObject:function(a){var b=Array.isArray(a)?[]:{};for(var c in a)b[c]=a[c];return Array.isArray(a)&&(b.length=a.length),b},check_:function(a){var b,c;if(hasObserve){if(!a)return!1;c={},b=diffObjectFromChangeRecords(this.value_,a,c)}else c=this.oldObject_,b=diffObjectFromOldObject(this.value_,this.oldObject_);return diffIsEmpty(b)?!1:(hasObserve||(this.oldObject_=this.copyObject(this.value_)),this.report_([b.added||{},b.removed||{},b.changed||{},function(a){return c[a]}]),!0)},disconnect_:function(){hasObserve?(this.directObserver_.close(),this.directObserver_=void 0):this.oldObject_=void 0},deliver:function(){this.state_==OPENED&&(hasObserve?this.directObserver_.deliver(!1):dirtyCheck(this))},discardChanges:function(){return this.directObserver_?this.directObserver_.deliver(!0):this.oldObject_=this.copyObject(this.value_),this.value_}}),ArrayObserver.prototype=createObject({__proto__:ObjectObserver.prototype,arrayObserve:!0,copyObject:function(a){return a.slice()},check_:function(a){var b;if(hasObserve){if(!a)return!1;b=projectArraySplices(this.value_,a)}else b=calcSplices(this.value_,0,this.value_.length,this.oldObject_,0,this.oldObject_.length);return b&&b.length?(hasObserve||(this.oldObject_=this.copyObject(this.value_)),this.report_([b]),!0):!1}}),ArrayObserver.applySplices=function(a,b,c){c.forEach(function(c){for(var d=[c.index,c.removed.length],e=c.index;e<c.index+c.addedCount;)d.push(b[e]),e++;Array.prototype.splice.apply(a,d)})},PathObserver.prototype=createObject({__proto__:Observer.prototype,connect_:function(){hasObserve&&(this.directObserver_=getObservedSet(this,this.object_)),this.check_(void 0,!0)},disconnect_:function(){this.value_=void 0,this.directObserver_&&(this.directObserver_.close(this),this.directObserver_=void 0)},iterateObjects_:function(a){this.path_.iterateObjects(this.object_,a)},check_:function(a,b){var c=this.value_;return this.value_=this.path_.getValueFrom(this.object_),b||areSameValue(this.value_,c)?!1:(this.report_([this.value_,c]),!0)},setValue:function(a){this.path_&&this.path_.setValueFrom(this.object_,a)}});var observerSentinel={};CompoundObserver.prototype=createObject({__proto__:Observer.prototype,connect_:function(){if(this.check_(void 0,!0),hasObserve){for(var a,b=!1,c=0;c<this.observed_.length;c+=2)if(a=this.observed_[c],a!==observerSentinel){b=!0;break}return this.directObserver_?b?void this.directObserver_.reset():(this.directObserver_.close(),void(this.directObserver_=void 0)):void(b&&(this.directObserver_=getObservedSet(this,a)))}},closeObservers_:function(){for(var a=0;a<this.observed_.length;a+=2)this.observed_[a]===observerSentinel&&this.observed_[a+1].close();this.observed_.length=0},disconnect_:function(){this.value_=void 0,this.directObserver_&&(this.directObserver_.close(this),this.directObserver_=void 0),this.closeObservers_()},addPath:function(a,b){if(this.state_!=UNOPENED&&this.state_!=RESETTING)throw Error("Cannot add paths once started.");this.observed_.push(a,b instanceof Path?b:getPath(b))},addObserver:function(a){if(this.state_!=UNOPENED&&this.state_!=RESETTING)throw Error("Cannot add observers once started.");a.open(this.deliver,this),this.observed_.push(observerSentinel,a)},startReset:function(){if(this.state_!=OPENED)throw Error("Can only reset while open");this.state_=RESETTING,this.closeObservers_()},finishReset:function(){if(this.state_!=RESETTING)throw Error("Can only finishReset after startReset");return this.state_=OPENED,this.connect_(),this.value_},iterateObjects_:function(a){for(var b,c=0;c<this.observed_.length;c+=2)b=this.observed_[c],b!==observerSentinel&&this.observed_[c+1].iterateObjects(b,a)},check_:function(a,b){for(var c,d=0;d<this.observed_.length;d+=2){var e=this.observed_[d+1],f=this.observed_[d],g=f===observerSentinel?e.discardChanges():e.getValueFrom(f);b?this.value_[d/2]=g:areSameValue(g,this.value_[d/2])||(c=c||[],c[d/2]=this.value_[d/2],this.value_[d/2]=g)}return c?(this.report_([this.value_,c,this.observed_]),!0):!1}}),ObserverTransform.prototype={open:function(a,b){return this.callback_=a,this.target_=b,this.value_=this.getValueFn_(this.observable_.open(this.observedCallback_,this)),this.value_},observedCallback_:function(a){if(a=this.getValueFn_(a),!areSameValue(a,this.value_)){var b=this.value_;this.value_=a,this.callback_.call(this.target_,this.value_,b)}},discardChanges:function(){return this.value_=this.getValueFn_(this.observable_.discardChanges()),this.value_},deliver:function(){return this.observable_.deliver()},setValue:function(a){return a=this.setValueFn_(a),!this.dontPassThroughSet_&&this.observable_.setValue?this.observable_.setValue(a):void 0},close:function(){this.observable_&&this.observable_.close(),this.callback_=void 0,this.target_=void 0,this.observable_=void 0,this.value_=void 0,this.getValueFn_=void 0,this.setValueFn_=void 0}};var expectedRecordTypes={add:!0,update:!0,"delete":!0};Observer.defineComputedProperty=function(a,b,c){var d=notifyFunction(a,b),e=c.open(function(a,b){e=a,d&&d("update",b)});return Object.defineProperty(a,b,{get:function(){return c.deliver(),e},set:function(a){return c.setValue(a),a},configurable:!0}),{close:function(){c.close(),Object.defineProperty(a,b,{value:e,writable:!0,configurable:!0})}}};var EDIT_LEAVE=0,EDIT_UPDATE=1,EDIT_ADD=2,EDIT_DELETE=3;ArraySplice.prototype={calcEditDistances:function(a,b,c,d,e,f){for(var g=f-e+1,h=c-b+1,i=new Array(g),j=0;g>j;j++)i[j]=new Array(h),i[j][0]=j;for(var k=0;h>k;k++)i[0][k]=k;for(var j=1;g>j;j++)for(var k=1;h>k;k++)if(this.equals(a[b+k-1],d[e+j-1]))i[j][k]=i[j-1][k-1];else{var l=i[j-1][k]+1,m=i[j][k-1]+1;i[j][k]=m>l?l:m}return i},spliceOperationsFromEditDistances:function(a){for(var b=a.length-1,c=a[0].length-1,d=a[b][c],e=[];b>0||c>0;)if(0!=b)if(0!=c){var f,g=a[b-1][c-1],h=a[b-1][c],i=a[b][c-1];f=i>h?g>h?h:g:g>i?i:g,f==g?(g==d?e.push(EDIT_LEAVE):(e.push(EDIT_UPDATE),d=g),b--,c--):f==h?(e.push(EDIT_DELETE),b--,d=h):(e.push(EDIT_ADD),c--,d=i)}else e.push(EDIT_DELETE),b--;else e.push(EDIT_ADD),c--;return e.reverse(),e},calcSplices:function(a,b,c,d,e,f){var g=0,h=0,i=Math.min(c-b,f-e);if(0==b&&0==e&&(g=this.sharedPrefix(a,d,i)),c==a.length&&f==d.length&&(h=this.sharedSuffix(a,d,i-g)),b+=g,e+=g,c-=h,f-=h,c-b==0&&f-e==0)return[];if(b==c){for(var j=newSplice(b,[],0);f>e;)j.removed.push(d[e++]);return[j]}if(e==f)return[newSplice(b,[],c-b)];for(var k=this.spliceOperationsFromEditDistances(this.calcEditDistances(a,b,c,d,e,f)),j=void 0,l=[],m=b,n=e,o=0;o<k.length;o++)switch(k[o]){case EDIT_LEAVE:j&&(l.push(j),j=void 0),m++,n++;break;case EDIT_UPDATE:j||(j=newSplice(m,[],0)),j.addedCount++,m++,j.removed.push(d[n]),n++;break;case EDIT_ADD:j||(j=newSplice(m,[],0)),j.addedCount++,m++;break;case EDIT_DELETE:j||(j=newSplice(m,[],0)),j.removed.push(d[n]),n++}return j&&l.push(j),l},sharedPrefix:function(a,b,c){for(var d=0;c>d;d++)if(!this.equals(a[d],b[d]))return d;return c},sharedSuffix:function(a,b,c){for(var d=a.length,e=b.length,f=0;c>f&&this.equals(a[--d],b[--e]);)f++;return 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