[MD History] Fix toolbar dates in grouped mode.

chrome/browser/resources/md_history/app.crisper.js

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 function PromiseResolver(){this.resolve_;this.reject_;this.promise_=new Promise(function(resolve,reject){this.resolve_=resolve;this.reject_=reject}.bind(this))}PromiseResolver.prototype={get promise(){return this.promise_},set promise(p){assertNotReached()},get resolve(){return this.resolve_},set resolve(r){assertNotReached()},get reject(){return this.reject_},set reject(s){assertNotReached()}};
 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 var global=this;var WebUIListener;var cr=cr||function(){"use strict";function exportPath(name,opt_object,opt_objectToExportTo){var parts=name.split(".");var cur=opt_objectToExportTo||global;for(var part;parts.length&&(part=parts.shift());){if(!parts.length&&opt_object!==undefined){cur[part]=opt_object}else if(part in cur){cur=cur[part]}else{cur=cur[part]={}}}return cur}function dispatchPropertyChange(target,propertyName,newValue,oldValue){var e=new Event(propertyName+"Change");e.propertyName=propertyName;e.newValue=newValue;e.oldValue=oldValue;target.dispatchEvent(e)}function getAttributeName(jsName){return jsName.replace(/([A-Z])/g,"-$1").toLowerCase()}var PropertyKind={JS:"js",ATTR:"attr",BOOL_ATTR:"boolAttr"};function getGetter(name,kind){switch(kind){case PropertyKind.JS:var privateName=name+"_";return function(){return this[privateName]};case PropertyKind.ATTR:var attributeName=getAttributeName(name);return function(){return this.getAttribute(attributeName)};case PropertyKind.BOOL_ATTR:var attributeName=getAttributeName(name);return function(){return this.hasAttribute(attributeName)}}throw"not reached"}function getSetter(name,kind,opt_setHook){switch(kind){case PropertyKind.JS:var privateName=name+"_";return function(value){var oldValue=this[name];if(value!==oldValue){this[privateName]=value;if(opt_setHook)opt_setHook.call(this,value,oldValue);dispatchPropertyChange(this,name,value,oldValue)}};case PropertyKind.ATTR:var attributeName=getAttributeName(name);return function(value){var oldValue=this[name];if(value!==oldValue){if(value==undefined)this.removeAttribute(attributeName);else this.setAttribute(attributeName,value);if(opt_setHook)opt_setHook.call(this,value,oldValue);dispatchPropertyChange(this,name,value,oldValue)}};case PropertyKind.BOOL_ATTR:var attributeName=getAttributeName(name);return function(value){var oldValue=this[name];if(value!==oldValue){if(value)this.setAttribute(attributeName,name);else this.removeAttribute(attributeName);if(opt_setHook)opt_setHook.call(this,value,oldValue);dispatchPropertyChange(this,name,value,oldValue)}}}throw"not reached"}function defineProperty(obj,name,opt_kind,opt_setHook){if(typeof obj=="function")obj=obj.prototype;var kind=opt_kind||PropertyKind.JS;if(!obj.__lookupGetter__(name))obj.__defineGetter__(name,getGetter(name,kind));if(!obj.__lookupSetter__(name))obj.__defineSetter__(name,getSetter(name,kind,opt_setHook))}var uidCounter=1;function createUid(){return uidCounter++}function getUid(item){if(item.hasOwnProperty("uid"))return item.uid;return item.uid=createUid()}function dispatchSimpleEvent(target,type,opt_bubbles,opt_cancelable){var e=new Event(type,{bubbles:opt_bubbles,cancelable:opt_cancelable===undefined||opt_cancelable});return target.dispatchEvent(e)}function define(name,fun){var obj=exportPath(name);var exports=fun();for(var propertyName in exports){var propertyDescriptor=Object.getOwnPropertyDescriptor(exports,propertyName);if(propertyDescriptor)Object.defineProperty(obj,propertyName,propertyDescriptor)}}function addSingletonGetter(ctor){ctor.getInstance=function(){return ctor.instance_||(ctor.instance_=new ctor)}}function makePublic(ctor,methods,opt_target){methods.forEach(function(method){ctor[method]=function(){var target=opt_target?document.getElementById(opt_target):ctor.getInstance();return target[method+"_"].apply(target,arguments)}})}var chromeSendResolverMap={};function webUIResponse(id,isSuccess,response){var resolver=chromeSendResolverMap[id];delete chromeSendResolverMap[id];if(isSuccess)resolver.resolve(response);else resolver.reject(response)}function sendWithPromise(methodName,var_args){var args=Array.prototype.slice.call(arguments,1);var promiseResolver=new PromiseResolver;var id=methodName+"_"+createUid();chromeSendResolverMap[id]=promiseResolver;chrome.send(methodName,[id].concat(args));return promiseResolver.promise}var webUIListenerMap={};function webUIListenerCallback(event,var_args){var eventListenersMap=webUIListenerMap[event];if(!eventListenersMap){return}var args=Array.prototype.slice.call(arguments,1);for(var listenerId in eventListenersMap){eventListenersMap[listenerId].apply(null,args)}}function addWebUIListener(eventName,callback){webUIListenerMap[eventName]=webUIListenerMap[eventName]||{};var uid=createUid();webUIListenerMap[eventName][uid]=callback;return{eventName:eventName,uid:uid}}function removeWebUIListener(listener){var listenerExists=webUIListenerMap[listener.eventName]&&webUIListenerMap[listener.eventName][listener.uid];if(listenerExists){delete webUIListenerMap[listener.eventName][listener.uid];return true}return false}return{addSingletonGetter:addSingletonGetter,createUid:createUid,define:define,defineProperty:defineProperty,dispatchPropertyChange:dispatchPropertyChange,dispatchSimpleEvent:dispatchSimpleEvent,exportPath:exportPath,getUid:getUid,makePublic:makePublic,PropertyKind:PropertyKind,addWebUIListener:addWebUIListener,removeWebUIListener:removeWebUIListener,sendWithPromise:sendWithPromise,webUIListenerCallback:webUIListenerCallback,webUIResponse:webUIResponse,get doc(){return document},get isMac(){return/Mac/.test(navigator.platform)},get isWindows(){return/Win/.test(navigator.platform)},get isChromeOS(){return/CrOS/.test(navigator.userAgent)},get isLinux(){return/Linux/.test(navigator.userAgent)},get isAndroid(){return/Android/.test(navigator.userAgent)},get isIOS(){return/iPad|iPhone|iPod/.test(navigator.platform)}}}();
 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
@@ skipping 19 matching lines @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 Polymer({is:"cr-toolbar",properties:{pageName:String,searchPrompt:String,clearLabel:String,menuLabel:String,menuPromo:String,spinnerActive:Boolean,showMenu:{type:Boolean,value:false},showMenuPromo:{type:Boolean,value:false},closeMenuPromo:String,narrow_:{type:Boolean,reflectToAttribute:true},showingSearch_:{type:Boolean,reflectToAttribute:true}},observers:["possiblyShowMenuPromo_(showMenu, showMenuPromo, showingSearch_)"],getSearchField:function(){return this.$.search},onClosePromoTap_:function(){this.fire("cr-toolbar-menu-promo-close")},onMenuTap_:function(){this.fire("cr-toolbar-menu-tap")},possiblyShowMenuPromo_:function(){Polymer.RenderStatus.afterNextRender(this,function(){if(this.showMenu&&this.showMenuPromo&&!this.showingSearch_){this.$$("#menuPromo").animate({opacity:[0,.9]},{duration:500,fill:"forwards"});this.fire("cr-toolbar-menu-promo-shown")}}.bind(this))},titleIfNotShowMenuPromo_:function(title,showMenuPromo){return showMenuPromo?"":title}});
 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 cr.define("md_history",function(){function BrowserService(){this.pendingDeleteItems_=null;this.pendingDeletePromise_=null}BrowserService.prototype={deleteItems:function(items){if(this.pendingDeleteItems_!=null){return new Promise(function(resolve,reject){reject(items)})}var removalList=items.map(function(item){return{url:item.url,timestamps:item.allTimestamps}});this.pendingDeleteItems_=items;this.pendingDeletePromise_=new PromiseResolver;chrome.send("removeVisits",removalList);return this.pendingDeletePromise_.promise},removeBookmark:function(url){chrome.send("removeBookmark",[url])},openForeignSessionAllTabs:function(sessionTag){chrome.send("openForeignSession",[sessionTag])},openForeignSessionTab:function(sessionTag,windowId,tabId,e){chrome.send("openForeignSession",[sessionTag,String(windowId),String(tabId),e.button||0,e.altKey,e.ctrlKey,e.metaKey,e.shiftKey])},deleteForeignSession:function(sessionTag){chrome.send("deleteForeignSession",[sessionTag])},openClearBrowsingData:function(){chrome.send("clearBrowsingData")},recordHistogram:function(histogram,value,max){chrome.send("metricsHandler:recordInHistogram",[histogram,value,max])},recordAction:function(action){if(action.indexOf("_")==-1)action="HistoryPage_"+action;chrome.send("metricsHandler:recordAction",[action])},resolveDelete_:function(successful){if(this.pendingDeleteItems_==null||this.pendingDeletePromise_==null){return}if(successful)this.pendingDeletePromise_.resolve(this.pendingDeleteItems_);else this.pendingDeletePromise_.reject(this.pendingDeleteItems_);this.pendingDeleteItems_=null;this.pendingDeletePromise_=null},menuPromoShown:function(){chrome.send("menuPromoShown")}};cr.addSingletonGetter(BrowserService);return{BrowserService:BrowserService}});function deleteComplete(){md_history.BrowserService.getInstance().resolveDelete_(true)}function deleteFailed(){md_history.BrowserService.getInstance().resolveDelete_(false)}
 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
-Polymer({is:"history-toolbar",properties:{count:{type:Number,value:0,observer:"changeToolbarView_"},itemsSelected_:{type:Boolean,value:false,reflectToAttribute:true},searchTerm:{type:String,observer:"searchTermChanged_",notify:true},spinnerActive:{type:Boolean,value:false},hasDrawer:{type:Boolean,reflectToAttribute:true},isGroupedMode:{type:Boolean,reflectToAttribute:true},groupedRange:{type:Number,reflectToAttribute:true,notify:true},groupedOffset:{type:Number,notify:true},querying:Boolean,hasMoreResults:Boolean,queryStartTime:String,queryEndTime:String,showMenuPromo:Boolean,showSyncNotice:Boolean},get searchField(){return this.$["main-toolbar"].getSearchField()},showSearchField:function(){this.searchField.showAndFocus()},changeToolbarView_:function(){this.itemsSelected_=this.count>0},searchTermChanged_:function(){if(this.searchField.getValue()!=this.searchTerm){this.searchField.showAndFocus();this.searchField.setValue(this.searchTerm)}},onSearchChanged_:function(event){this.searchTerm=event.detail},onInfoButtonTap_:function(){var dropdown=this.$.syncNotice.get();dropdown.positionTarget=this.$$("#info-button-icon");if(dropdown.style.display=="none")dropdown.open()},onClearSelectionTap_:function(){this.fire("unselect-all")},onDeleteTap_:function(){this.fire("delete-selected")},deletingAllowed_:function(){return loadTimeData.getBoolean("allowDeletingHistory")},numberOfItemsSelected_:function(count){return count>0?loadTimeData.getStringF("itemsSelected",count):""},getHistoryInterval_:function(queryStartTime,queryEndTime){return loadTimeData.getStringF("historyInterval",queryStartTime,queryEndTime)},onTodayTap_:function(){if(!this.querying)this.groupedOffset=0},onPrevTap_:function(){if(!this.querying)this.groupedOffset=this.groupedOffset+1},onNextTap_:function(){if(!this.querying)this.groupedOffset=this.groupedOffset-1},isToday_:function(){return this.groupedOffset==0}});(function(){"use strict";Polymer.IronA11yAnnouncer=Polymer({is:"iron-a11y-announcer",properties:{mode:{type:String,value:"polite"},_text:{type:String,value:""}},created:function(){if(!Polymer.IronA11yAnnouncer.instance){Polymer.IronA11yAnnouncer.instance=this}document.body.addEventListener("iron-announce",this._onIronAnnounce.bind(this))},announce:function(text){this._text="";this.async(function(){this._text=text},100)},_onIronAnnounce:function(event){if(event.detail&&event.detail.text){this.announce(event.detail.text)}}});Polymer.IronA11yAnnouncer.instance=null;Polymer.IronA11yAnnouncer.requestAvailability=function(){if(!Polymer.IronA11yAnnouncer.instance){Polymer.IronA11yAnnouncer.instance=document.createElement("iron-a11y-announcer")}document.body.appendChild(Polymer.IronA11yAnnouncer.instance)}})();(function(){var IOS=navigator.userAgent.match(/iP(?:hone|ad;(?: U;)? CPU) OS (\d+)/);var IOS_TOUCH_SCROLLING=IOS&&IOS[1]>=8;var DEFAULT_PHYSICAL_COUNT=3;var HIDDEN_Y="-10000px";var ITEM_WIDTH=0;var ITEM_HEIGHT=1;var SECRET_TABINDEX=-100;Polymer({is:"iron-list",properties:{items:{type:Array},maxPhysicalCount:{type:Number,value:500},as:{type:String,value:"item"},indexAs:{type:String,value:"index"},selectedAs:{type:String,value:"selected"},grid:{type:Boolean,value:false,reflectToAttribute:true},selectionEnabled:{type:Boolean,value:false},selectedItem:{type:Object,notify:true},selectedItems:{type:Object,notify:true},multiSelection:{type:Boolean,value:false}},observers:["_itemsChanged(items.*)","_selectionEnabledChanged(selectionEnabled)","_multiSelectionChanged(multiSelection)","_setOverflow(scrollTarget)"],behaviors:[Polymer.Templatizer,Polymer.IronResizableBehavior,Polymer.IronA11yKeysBehavior,Polymer.IronScrollTargetBehavior],keyBindings:{up:"_didMoveUp",down:"_didMoveDown",enter:"_didEnter"},_ratio:.5,_scrollerPaddingTop:0,_scrollPosition:0,_physicalSize:0,_physicalAverage:0,_physicalAverageCount:0,_physicalTop:0,_virtualCount:0,_physicalIndexForKey:null,_estScrollHeight:0,_scrollHeight:0,_viewportHeight:0,_viewportWidth:0,_physicalItems:null,_physicalSizes:null,_firstVisibleIndexVal:null,_lastVisibleIndexVal:null,_collection:null,_maxPages:2,_focusedItem:null,_focusedIndex:-1,_offscreenFocusedItem:null,_focusBackfillItem:null,_itemsPerRow:1,_itemWidth:0,_rowHeight:0,_templateCost:0,get _physicalBottom(){return this._physicalTop+this._physicalSize},get _scrollBottom(){return this._scrollPosition+this._viewportHeight},get _virtualEnd(){return this._virtualStart+this._physicalCount-1},get _hiddenContentSize(){var size=this.grid?this._physicalRows*this._rowHeight:this._physicalSize;return size-this._viewportHeight},get _maxScrollTop(){return this._estScrollHeight-this._viewportHeight+this._scrollerPaddingTop},_minVirtualStart:0,get _maxVirtualStart(){return Math.max(0,this._virtualCount-this._physicalCount)},_virtualStartVal:0,set _virtualStart(val){this._virtualStartVal=Math.min(this._maxVirtualStart,Math.max(this._minVirtualStart,val))},get _virtualStart(){return this._virtualStartVal||0},_physicalStartVal:0,set _physicalStart(val){this._physicalStartVal=val%this._physicalCount;if(this._physicalStartVal<0){this._physicalStartVal=this._physicalCount+this._physicalStartVal}this._physicalEnd=(this._physicalStart+this._physicalCount-1)%this._physicalCount},get _physicalStart(){return this._physicalStartVal||0},_physicalCountVal:0,set _physicalCount(val){this._physicalCountVal=val;this._physicalEnd=(this._physicalStart+this._physicalCount-1)%this._physicalCount},get _physicalCount(){return this._physicalCountVal},_physicalEnd:0,get _optPhysicalSize(){if(this.grid){return this._estRowsInView*this._rowHeight*this._maxPages}return this._viewportHeight*this._maxPages},get _isVisible(){return Boolean(this.offsetWidth||this.offsetHeight)},get firstVisibleIndex(){if(this._firstVisibleIndexVal===null){var physicalOffset=Math.floor(this._physicalTop+this._scrollerPaddingTop);this._firstVisibleIndexVal=this._iterateItems(function(pidx,vidx){physicalOffset+=this._getPhysicalSizeIncrement(pidx);if(physicalOffset>this._scrollPosition){return this.grid?vidx-vidx%this._itemsPerRow:vidx}if(this.grid&&this._virtualCount-1===vidx){return vidx-vidx%this._itemsPerRow}})||0}return this._firstVisibleIndexVal},get lastVisibleIndex(){if(this._lastVisibleIndexVal===null){if(this.grid){var lastIndex=this.firstVisibleIndex+this._estRowsInView*this._itemsPerRow-1;this._lastVisibleIndexVal=Math.min(this._virtualCount,lastIndex)}else{var physicalOffset=this._physicalTop;this._iterateItems(function(pidx,vidx){if(physicalOffset<this._scrollBottom){this._lastVisibleIndexVal=vidx}else{return true}physicalOffset+=this._getPhysicalSizeIncrement(pidx)})}}return this._lastVisibleIndexVal},get _defaultScrollTarget(){return this},get _virtualRowCount(){return Math.ceil(this._virtualCount/this._itemsPerRow)},get _estRowsInView(){return Math.ceil(this._viewportHeight/this._rowHeight)},get _physicalRows(){return Math.ceil(this._physicalCount/this._itemsPerRow)},ready:function(){this.addEventListener("focus",this._didFocus.bind(this),true)},attached:function(){if(this._physicalCount===0){this._debounceTemplate(this._render)}this.listen(this,"iron-resize","_resizeHandler")},detached:function(){this.unlisten(this,"iron-resize","_resizeHandler")},_setOverflow:function(scrollTarget){this.style.webkitOverflowScrolling=scrollTarget===this?"touch":"";this.style.overflow=scrollTarget===this?"auto":""},updateViewportBoundaries:function(){this._scrollerPaddingTop=this.scrollTarget===this?0:parseInt(window.getComputedStyle(this)["padding-top"],10);this._viewportWidth=this.$.items.offsetWidth;this._viewportHeight=this._scrollTargetHeight;this.grid&&this._updateGridMetrics()},_scrollHandler:function(){var scrollTop=Math.max(0,Math.min(this._maxScrollTop,this._scrollTop));var delta=scrollTop-this._scrollPosition;var isScrollingDown=delta>=0;this._scrollPosition=scrollTop;this._firstVisibleIndexVal=null;this._lastVisibleIndexVal=null;if(Math.abs(delta)>this._physicalSize){var idxAdjustment=Math.round(delta/this._physicalAverage)*this._itemsPerRow;this._physicalTop=this._physicalTop+delta;this._virtualStart=this._virtualStart+idxAdjustment;this._physicalStart=this._physicalStart+idxAdjustment;this._update()}else{var reusables=this._getReusables(isScrollingDown);if(isScrollingDown){this._physicalTop=reusables.physicalTop;this._virtualStart=this._virtualStart+reusables.indexes.length;this._physicalStart=this._physicalStart+reusables.indexes.length}else{this._virtualStart=this._virtualStart-reusables.indexes.length;this._physicalStart=this._physicalStart-reusables.indexes.length}if(reusables.indexes.length===0){this._increasePoolIfNeeded()}else{this._update(reusables.indexes,isScrollingDown?null:reusables.indexes)}}},_getReusables:function(fromTop){var ith,lastIth,offsetContent,physicalItemHeight;var idxs=[];var protectedOffsetContent=this._hiddenContentSize*this._ratio;var virtualStart=this._virtualStart;var virtualEnd=this._virtualEnd;var physicalCount=this._physicalCount;var physicalTop=this._physicalTop+this._scrollerPaddingTop;var scrollTop=this._scrollTop;var scrollBottom=this._scrollBottom;if(fromTop){ith=this._physicalStart;lastIth=this._physicalEnd;offsetContent=scrollTop-physicalTop}else{ith=this._physicalEnd;lastIth=this._physicalStart;offsetContent=this._physicalBottom-scrollBottom}while(true){physicalItemHeight=this._getPhysicalSizeIncrement(ith);offsetContent=offsetContent-physicalItemHeight;if(idxs.length>=physicalCount||offsetContent<=protectedOffsetContent){break}if(fromTop){if(virtualEnd+idxs.length+1>=this._virtualCount){break}if(physicalTop+physicalItemHeight>=scrollTop){break}idxs.push(ith);physicalTop=physicalTop+physicalItemHeight;ith=(ith+1)%physicalCount}else{if(virtualStart-idxs.length<=0){break}if(physicalTop+this._physicalSize-physicalItemHeight<=scrollBottom){break}idxs.push(ith);physicalTop=physicalTop-physicalItemHeight;ith=ith===0?physicalCount-1:ith-1}}return{indexes:idxs,physicalTop:physicalTop-this._scrollerPaddingTop}},_update:function(itemSet,movingUp){if(itemSet&&itemSet.length===0){return}this._manageFocus();this._assignModels(itemSet);this._updateMetrics(itemSet);if(movingUp){while(movingUp.length){var idx=movingUp.pop();this._physicalTop-=this._getPhysicalSizeIncrement(idx)}}this._positionItems();this._updateScrollerSize();this._increasePoolIfNeeded()},_createPool:function(size){var physicalItems=new Array(size);this._ensureTemplatized();for(var i=0;i<size;i++){var inst=this.stamp(null);physicalItems[i]=inst.root.querySelector("*");Polymer.dom(this).appendChild(inst.root)}return physicalItems},_increasePoolIfNeeded:function(){if(this._viewportHeight===0){return false}var self=this;var isClientFull=this._physicalBottom>=this._scrollBottom&&this._physicalTop<=this._scrollPosition;if(this._physicalSize>=this._optPhysicalSize&&isClientFull){return false}var maxPoolSize=Math.round(this._physicalCount*.5);if(!isClientFull){this._debounceTemplate(this._increasePool.bind(this,maxPoolSize));return true}this._yield(function(){self._increasePool(Math.min(maxPoolSize,Math.max(1,Math.round(50/self._templateCost))))});return true},_yield:function(cb){var g=window;var handle=g.requestIdleCallback?g.requestIdleCallback(cb):g.setTimeout(cb,16);Polymer.dom.addDebouncer({complete:function(){g.cancelIdleCallback?g.cancelIdleCallback(handle):g.clearTimeout(handle);cb()}})},_increasePool:function(missingItems){var nextPhysicalCount=Math.min(this._physicalCount+missingItems,this._virtualCount-this._virtualStart,Math.max(this.maxPhysicalCount,DEFAULT_PHYSICAL_COUNT));var prevPhysicalCount=this._physicalCount;var delta=nextPhysicalCount-prevPhysicalCount;var ts=window.performance.now();if(delta<=0){return}[].push.apply(this._physicalItems,this._createPool(delta));[].push.apply(this._physicalSizes,new Array(delta));this._physicalCount=prevPhysicalCount+delta;if(this._physicalStart>this._physicalEnd&&this._isIndexRendered(this._focusedIndex)&&this._getPhysicalIndex(this._focusedIndex)<this._physicalEnd){this._physicalStart=this._physicalStart+delta}this._update();this._templateCost=(window.performance.now()-ts)/delta},_render:function(){if(this.isAttached&&this._isVisible){if(this._physicalCount===0){this.updateViewportBoundaries();this._increasePool(DEFAULT_PHYSICAL_COUNT)}else{var reusables=this._getReusables(true);this._physicalTop=reusables.physicalTop;this._virtualStart=this._virtualStart+reusables.indexes.length;this._physicalStart=this._physicalStart+reusables.indexes.length;this._update(reusables.indexes);this._update()}}},_ensureTemplatized:function(){if(!this.ctor){var props={};props.__key__=true;props[this.as]=true;props[this.indexAs]=true;props[this.selectedAs]=true;props.tabIndex=true;this._instanceProps=props;this._userTemplate=Polymer.dom(this).querySelector("template");if(this._userTemplate){this.templatize(this._userTemplate)}else{console.warn("iron-list requires a template to be provided in light-dom")}}},_getStampedChildren:function(){return this._physicalItems},_forwardInstancePath:function(inst,path,value){if(path.indexOf(this.as+".")===0){this.notifyPath("items."+inst.__key__+"."+path.slice(this.as.length+1),value)}},_forwardParentProp:function(prop,value){if(this._physicalItems){this._physicalItems.forEach(function(item){item._templateInstance[prop]=value},this)}},_forwardParentPath:function(path,value){if(this._physicalItems){this._physicalItems.forEach(function(item){item._templateInstance.notifyPath(path,value,true)},this)}},_forwardItemPath:function(path,value){if(!this._physicalIndexForKey){return}var dot=path.indexOf(".");var key=path.substring(0,dot<0?path.length:dot);var idx=this._physicalIndexForKey[key];var offscreenItem=this._offscreenFocusedItem;var el=offscreenItem&&offscreenItem._templateInstance.__key__===key?offscreenItem:this._physicalItems[idx];if(!el||el._templateInstance.__key__!==key){return}if(dot>=0){path=this.as+"."+path.substring(dot+1);el._templateInstance.notifyPath(path,value,true)}else{var currentItem=el._templateInstance[this.as];if(Array.isArray(this.selectedItems)){for(var i=0;i<this.selectedItems.length;i++){if(this.selectedItems[i]===currentItem){this.set("selectedItems."+i,value);break}}}else if(this.selectedItem===currentItem){this.set("selectedItem",value)}el._templateInstance[this.as]=value}},_itemsChanged:function(change){if(change.path==="items"){this._virtualStart=0;this._physicalTop=0;this._virtualCount=this.items?this.items.length:0;this._collection=this.items?Polymer.Collection.get(this.items):null;this._physicalIndexForKey={};this._firstVisibleIndexVal=null;this._lastVisibleIndexVal=null;this._physicalCount=this._physicalCount||0;this._physicalItems=this._physicalItems||[];this._physicalSizes=this._physicalSizes||[];this._physicalStart=0;this._resetScrollPosition(0);this._removeFocusedItem();this._debounceTemplate(this._render)}else if(change.path==="items.splices"){this._adjustVirtualIndex(change.value.indexSplices);this._virtualCount=this.items?this.items.length:0;this._debounceTemplate(this._render)}else{this._forwardItemPath(change.path.split(".").slice(1).join("."),change.value)}},_adjustVirtualIndex:function(splices){splices.forEach(function(splice){splice.removed.forEach(this._removeItem,this);if(splice.index<this._virtualStart){var delta=Math.max(splice.addedCount-splice.removed.length,splice.index-this._virtualStart);this._virtualStart=this._virtualStart+delta;if(this._focusedIndex>=0){this._focusedIndex=this._focusedIndex+delta}}},this)},_removeItem:function(item){this.$.selector.deselect(item);if(this._focusedItem&&this._focusedItem._templateInstance[this.as]===item){this._removeFocusedItem()}},_iterateItems:function(fn,itemSet){var pidx,vidx,rtn,i;if(arguments.length===2&&itemSet){for(i=0;i<itemSet.length;i++){pidx=itemSet[i];vidx=this._computeVidx(pidx);if((rtn=fn.call(this,pidx,vidx))!=null){return rtn}}}else{pidx=this._physicalStart;vidx=this._virtualStart;for(;pidx<this._physicalCount;pidx++,vidx++){if((rtn=fn.call(this,pidx,vidx))!=null){return rtn}}for(pidx=0;pidx<this._physicalStart;pidx++,vidx++){if((rtn=fn.call(this,pidx,vidx))!=null){return rtn}}}},_computeVidx:function(pidx){if(pidx>=this._physicalStart){return this._virtualStart+(pidx-this._physicalStart)}return this._virtualStart+(this._physicalCount-this._physicalStart)+pidx},_assignModels:function(itemSet){this._iterateItems(function(pidx,vidx){var el=this._physicalItems[pidx];var inst=el._templateInstance;var item=this.items&&this.items[vidx];if(item!=null){inst[this.as]=item;inst.__key__=this._collection.getKey(item);inst[this.selectedAs]=this.$.selector.isSelected(item);inst[this.indexAs]=vidx;inst.tabIndex=this._focusedIndex===vidx?0:-1;this._physicalIndexForKey[inst.__key__]=pidx;el.removeAttribute("hidden")}else{inst.__key__=null;el.setAttribute("hidden","")}},itemSet)},_updateMetrics:function(itemSet){Polymer.dom.flush();var newPhysicalSize=0;var oldPhysicalSize=0;var prevAvgCount=this._physicalAverageCount;var prevPhysicalAvg=this._physicalAverage;this._iterateItems(function(pidx,vidx){oldPhysicalSize+=this._physicalSizes[pidx]||0;this._physicalSizes[pidx]=this._physicalItems[pidx].offsetHeight;newPhysicalSize+=this._physicalSizes[pidx];this._physicalAverageCount+=this._physicalSizes[pidx]?1:0},itemSet);if(this.grid){this._updateGridMetrics();this._physicalSize=Math.ceil(this._physicalCount/this._itemsPerRow)*this._rowHeight}else{this._physicalSize=this._physicalSize+newPhysicalSize-oldPhysicalSize}if(this._physicalAverageCount!==prevAvgCount){this._physicalAverage=Math.round((prevPhysicalAvg*prevAvgCount+newPhysicalSize)/this._physicalAverageCount)}},_updateGridMetrics:function(){this._itemWidth=this._physicalCount>0?this._physicalItems[0].getBoundingClientRect().width:200;this._rowHeight=this._physicalCount>0?this._physicalItems[0].offsetHeight:200;this._itemsPerRow=this._itemWidth?Math.floor(this._viewportWidth/this._itemWidth):this._itemsPerRow},_positionItems:function(){this._adjustScrollPosition();var y=this._physicalTop;if(this.grid){var totalItemWidth=this._itemsPerRow*this._itemWidth;var rowOffset=(this._viewportWidth-totalItemWidth)/2;this._iterateItems(function(pidx,vidx){var modulus=vidx%this._itemsPerRow;var x=Math.floor(modulus*this._itemWidth+rowOffset);this.translate3d(x+"px",y+"px",0,this._physicalItems[pidx]);if(this._shouldRenderNextRow(vidx)){y+=this._rowHeight}})}else{this._iterateItems(function(pidx,vidx){this.translate3d(0,y+"px",0,this._physicalItems[pidx]);y+=this._physicalSizes[pidx]})}},_getPhysicalSizeIncrement:function(pidx){if(!this.grid){return this._physicalSizes[pidx]}if(this._computeVidx(pidx)%this._itemsPerRow!==this._itemsPerRow-1){return 0}return this._rowHeight},_shouldRenderNextRow:function(vidx){return vidx%this._itemsPerRow===this._itemsPerRow-1},_adjustScrollPosition:function(){var deltaHeight=this._virtualStart===0?this._physicalTop:Math.min(this._scrollPosition+this._physicalTop,0);if(deltaHeight){this._physicalTop=this._physicalTop-deltaHeight;if(!IOS_TOUCH_SCROLLING&&this._physicalTop!==0){this._resetScrollPosition(this._scrollTop-deltaHeight)}}},_resetScrollPosition:function(pos){if(this.scrollTarget){this._scrollTop=pos;this._scrollPosition=this._scrollTop}},_updateScrollerSize:function(forceUpdate){if(this.grid){this._estScrollHeight=this._virtualRowCount*this._rowHeight}else{this._estScrollHeight=this._physicalBottom+Math.max(this._virtualCount-this._physicalCount-this._virtualStart,0)*this._physicalAverage}forceUpdate=forceUpdate||this._scrollHeight===0;forceUpdate=forceUpdate||this._scrollPosition>=this._estScrollHeight-this._physicalSize;forceUpdate=forceUpdate||this.grid&&this.$.items.style.height<this._estScrollHeight;if(forceUpdate||Math.abs(this._estScrollHeight-this._scrollHeight)>=this._optPhysicalSize){this.$.items.style.height=this._estScrollHeight+"px";this._scrollHeight=this._estScrollHeight}},scrollToItem:function(item){return this.scrollToIndex(this.items.indexOf(item))},scrollToIndex:function(idx){if(typeof idx!=="number"||idx<0||idx>this.items.length-1){return}Polymer.dom.flush();if(this._physicalCount===0){return}idx=Math.min(Math.max(idx,0),this._virtualCount-1);if(!this._isIndexRendered(idx)||idx>=this._maxVirtualStart){this._virtualStart=this.grid?idx-this._itemsPerRow*2:idx-1}this._manageFocus();this._assignModels();this._updateMetrics();this._physicalTop=Math.floor(this._virtualStart/this._itemsPerRow)*this._physicalAverage;var currentTopItem=this._physicalStart;var currentVirtualItem=this._virtualStart;var targetOffsetTop=0;var hiddenContentSize=this._hiddenContentSize;while(currentVirtualItem<idx&&targetOffsetTop<=hiddenContentSize){targetOffsetTop=targetOffsetTop+this._getPhysicalSizeIncrement(currentTopItem);currentTopItem=(currentTopItem+1)%this._physicalCount;currentVirtualItem++}this._updateScrollerSize(true);this._positionItems();this._resetScrollPosition(this._physicalTop+this._scrollerPaddingTop+targetOffsetTop);this._increasePoolIfNeeded();this._firstVisibleIndexVal=null;this._lastVisibleIndexVal=null},_resetAverage:function(){this._physicalAverage=0;this._physicalAverageCount=0},_resizeHandler:function(){var delta=Math.abs(this._viewportHeight-this._scrollTargetHeight);if(IOS&&delta>0&&delta<100){return}Polymer.dom.addDebouncer(this.debounce("_debounceTemplate",function(){this.updateViewportBoundaries();this._render();if(this._isVisible){this.toggleScrollListener(true);if(this._physicalCount>0){this._resetAverage();this.scrollToIndex(this.firstVisibleIndex)}}else{this.toggleScrollListener(false)}}.bind(this),1))},_getModelFromItem:function(item){var key=this._collection.getKey(item);var pidx=this._physicalIndexForKey[key];if(pidx!=null){return this._physicalItems[pidx]._templateInstance}return null},_getNormalizedItem:function(item){if(this._collection.getKey(item)===undefined){if(typeof item==="number"){item=this.items[item];if(!item){throw new RangeError("<item> not found")}return item}throw new TypeError("<item> should be a valid item")}return item},selectItem:function(item){item=this._getNormalizedItem(item);var model=this._getModelFromItem(item);if(!this.multiSelection&&this.selectedItem){this.deselectItem(this.selectedItem)}if(model){model[this.selectedAs]=true}this.$.selector.select(item);this.updateSizeForItem(item)},deselectItem:function(item){item=this._getNormalizedItem(item);var model=this._getModelFromItem(item);if(model){model[this.selectedAs]=false}this.$.selector.deselect(item);this.updateSizeForItem(item)},toggleSelectionForItem:function(item){item=this._getNormalizedItem(item);if(this.$.selector.isSelected(item)){this.deselectItem(item)}else{this.selectItem(item)}},clearSelection:function(){function unselect(item){var model=this._getModelFromItem(item);if(model){model[this.selectedAs]=false}}if(Array.isArray(this.selectedItems)){this.selectedItems.forEach(unselect,this)}else if(this.selectedItem){unselect.call(this,this.selectedItem)}this.$.selector.clearSelection()},_selectionEnabledChanged:function(selectionEnabled){var handler=selectionEnabled?this.listen:this.unlisten;handler.call(this,this,"tap","_selectionHandler")},_selectionHandler:function(e){var model=this.modelForElement(e.target);if(!model){return}var modelTabIndex,activeElTabIndex;var target=Polymer.dom(e).path[0];var activeEl=Polymer.dom(this.domHost?this.domHost.root:document).activeElement;var physicalItem=this._physicalItems[this._getPhysicalIndex(model[this.indexAs])];if(target.localName==="input"||target.localName==="button"||target.localName==="select"){return}modelTabIndex=model.tabIndex;model.tabIndex=SECRET_TABINDEX;activeElTabIndex=activeEl?activeEl.tabIndex:-1;model.tabIndex=modelTabIndex;if(activeEl&&physicalItem!==activeEl&&physicalItem.contains(activeEl)&&activeElTabIndex!==SECRET_TABINDEX){return}this.toggleSelectionForItem(model[this.as])},_multiSelectionChanged:function(multiSelection){this.clearSelection();this.$.selector.multi=multiSelection},updateSizeForItem:function(item){item=this._getNormalizedItem(item);var key=this._collection.getKey(item);var pidx=this._physicalIndexForKey[key];if(pidx!=null){this._updateMetrics([pidx]);this._positionItems()}},_manageFocus:function(){var fidx=this._focusedIndex;if(fidx>=0&&fidx<this._virtualCount){if(this._isIndexRendered(fidx)){this._restoreFocusedItem()}else{this._createFocusBackfillItem()}}else if(this._virtualCount>0&&this._physicalCount>0){this._focusedIndex=this._virtualStart;this._focusedItem=this._physicalItems[this._physicalStart]}},_isIndexRendered:function(idx){return idx>=this._virtualStart&&idx<=this._virtualEnd},_isIndexVisible:function(idx){return idx>=this.firstVisibleIndex&&idx<=this.lastVisibleIndex},_getPhysicalIndex:function(idx){return this._physicalIndexForKey[this._collection.getKey(this._getNormalizedItem(idx))]},_focusPhysicalItem:function(idx){if(idx<0||idx>=this._virtualCount){return}this._restoreFocusedItem();if(!this._isIndexRendered(idx)){this.scrollToIndex(idx)}var physicalItem=this._physicalItems[this._getPhysicalIndex(idx)];var model=physicalItem._templateInstance;var focusable;model.tabIndex=SECRET_TABINDEX;if(physicalItem.tabIndex===SECRET_TABINDEX){focusable=physicalItem}if(!focusable){focusable=Polymer.dom(physicalItem).querySelector('[tabindex="'+SECRET_TABINDEX+'"]')}model.tabIndex=0;this._focusedIndex=idx;focusable&&focusable.focus()},_removeFocusedItem:function(){if(this._offscreenFocusedItem){Polymer.dom(this).removeChild(this._offscreenFocusedItem)}this._offscreenFocusedItem=null;this._focusBackfillItem=null;this._focusedItem=null;this._focusedIndex=-1},_createFocusBackfillItem:function(){var fidx=this._focusedIndex;var pidx=this._getPhysicalIndex(fidx);if(this._offscreenFocusedItem||pidx==null||fidx<0){return}if(!this._focusBackfillItem){var stampedTemplate=this.stamp(null);this._focusBackfillItem=stampedTemplate.root.querySelector("*");Polymer.dom(this).appendChild(stampedTemplate.root)}this._offscreenFocusedItem=this._physicalItems[pidx];this._offscreenFocusedItem._templateInstance.tabIndex=0;this._physicalItems[pidx]=this._focusBackfillItem;this.translate3d(0,HIDDEN_Y,0,this._offscreenFocusedItem)},_restoreFocusedItem:function(){var pidx,fidx=this._focusedIndex;if(!this._offscreenFocusedItem||this._focusedIndex<0){return}this._assignModels();pidx=this._getPhysicalIndex(fidx);if(pidx!=null){this._focusBackfillItem=this._physicalItems[pidx];this._focusBackfillItem._templateInstance.tabIndex=-1;this._physicalItems[pidx]=this._offscreenFocusedItem;this._offscreenFocusedItem=null;this.translate3d(0,HIDDEN_Y,0,this._focusBackfillItem)}},_didFocus:function(e){var targetModel=this.modelForElement(e.target);var focusedModel=this._focusedItem?this._focusedItem._templateInstance:null;var hasOffscreenFocusedItem=this._offscreenFocusedItem!==null;var fidx=this._focusedIndex;if(!targetModel||!focusedModel){return}if(focusedModel===targetModel){if(!this._isIndexVisible(fidx)){this.scrollToIndex(fidx)}}else{this._restoreFocusedItem();focusedModel.tabIndex=-1;targetModel.tabIndex=0;fidx=targetModel[this.indexAs];this._focusedIndex=fidx;this._focusedItem=this._physicalItems[this._getPhysicalIndex(fidx)];if(hasOffscreenFocusedItem&&!this._offscreenFocusedItem){this._update()}}},_didMoveUp:function(){this._focusPhysicalItem(this._focusedIndex-1)},_didMoveDown:function(e){e.detail.keyboardEvent.preventDefault();this._focusPhysicalItem(this._focusedIndex+1)},_didEnter:function(e){this._focusPhysicalItem(this._focusedIndex);this._selectionHandler(e.detail.keyboardEvent)}})})();Polymer({is:"iron-scroll-threshold",properties:{upperThreshold:{type:Number,value:100},lowerThreshold:{type:Number,value:100},upperTriggered:{type:Boolean,value:false,notify:true,readOnly:true},lowerTriggered:{type:Boolean,value:false,notify:true,readOnly:true},horizontal:{type:Boolean,value:false}},behaviors:[Polymer.IronScrollTargetBehavior],observers:["_setOverflow(scrollTarget)","_initCheck(horizontal, isAttached)"],get _defaultScrollTarget(){return this},_setOverflow:function(scrollTarget){this.style.overflow=scrollTarget===this?"auto":""},_scrollHandler:function(){var THROTTLE_THRESHOLD=200;if(!this.isDebouncerActive("_checkTheshold")){this.debounce("_checkTheshold",function(){this.checkScrollThesholds()},THROTTLE_THRESHOLD)}},_initCheck:function(horizontal,isAttached){if(isAttached){this.debounce("_init",function(){this.clearTriggers();this.checkScrollThesholds()})}},checkScrollThesholds:function(){if(!this.scrollTarget||this.lowerTriggered&&this.upperTriggered){return}var upperScrollValue=this.horizontal?this._scrollLeft:this._scrollTop;var lowerScrollValue=this.horizontal?this.scrollTarget.scrollWidth-this._scrollTargetWidth-this._scrollLeft:this.scrollTarget.scrollHeight-this._scrollTargetHeight-this._scrollTop;if(upperScrollValue<=this.upperThreshold&&!this.upperTriggered){this._setUpperTriggered(true);this.fire("upper-threshold")}if(lowerScrollValue<=this.lowerThreshold&&!this.lowerTriggered){this._setLowerTriggered(true);this.fire("lower-threshold")}},clearTriggers:function(){this._setUpperTriggered(false);this._setLowerTriggered(false)}});
+Polymer({is:"history-toolbar",properties:{count:{type:Number,value:0,observer:"changeToolbarView_"},itemsSelected_:{type:Boolean,value:false,reflectToAttribute:true},searchTerm:{type:String,observer:"searchTermChanged_",notify:true},spinnerActive:{type:Boolean,value:false},hasDrawer:{type:Boolean,reflectToAttribute:true},isGroupedMode:{type:Boolean,reflectToAttribute:true},groupedRange:{type:Number,reflectToAttribute:true,notify:true},groupedOffset:{type:Number,notify:true},hasMoreResults:Boolean,querying:Boolean,queryInfo:Object,showMenuPromo:Boolean,showSyncNotice:Boolean},get searchField(){return this.$["main-toolbar"].getSearchField()},showSearchField:function(){this.searchField.showAndFocus()},changeToolbarView_:function(){this.itemsSelected_=this.count>0},searchTermChanged_:function(){if(this.searchField.getValue()!=this.searchTerm){this.searchField.showAndFocus();this.searchField.setValue(this.searchTerm)}},onSearchChanged_:function(event){this.searchTerm=event.detail},onInfoButtonTap_:function(){var dropdown=this.$.syncNotice.get();dropdown.positionTarget=this.$$("#info-button-icon");if(dropdown.style.display=="none")dropdown.open()},onClearSelectionTap_:function(){this.fire("unselect-all")},onDeleteTap_:function(){this.fire("delete-selected")},deletingAllowed_:function(){return loadTimeData.getBoolean("allowDeletingHistory")},numberOfItemsSelected_:function(count){return count>0?loadTimeData.getStringF("itemsSelected",count):""},getHistoryInterval_:function(){var info=this.queryInfo;if(this.groupedRange==HistoryRange.WEEK)return info.queryInterval;if(this.groupedRange==HistoryRange.MONTH)return info.queryStartMonth},onTodayTap_:function(){if(!this.querying)this.groupedOffset=0},onPrevTap_:function(){if(!this.querying)this.groupedOffset=this.groupedOffset+1},onNextTap_:function(){if(!this.querying)this.groupedOffset=this.groupedOffset-1},isToday_:function(){return this.groupedOffset==0}});(function(){"use strict";Polymer.IronA11yAnnouncer=Polymer({is:"iron-a11y-announcer",properties:{mode:{type:String,value:"polite"},_text:{type:String,value:""}},created:function(){if(!Polymer.IronA11yAnnouncer.instance){Polymer.IronA11yAnnouncer.instance=this}document.body.addEventListener("iron-announce",this._onIronAnnounce.bind(this))},announce:function(text){this._text="";this.async(function(){this._text=text},100)},_onIronAnnounce:function(event){if(event.detail&&event.detail.text){this.announce(event.detail.text)}}});Polymer.IronA11yAnnouncer.instance=null;Polymer.IronA11yAnnouncer.requestAvailability=function(){if(!Polymer.IronA11yAnnouncer.instance){Polymer.IronA11yAnnouncer.instance=document.createElement("iron-a11y-announcer")}document.body.appendChild(Polymer.IronA11yAnnouncer.instance)}})();(function(){var IOS=navigator.userAgent.match(/iP(?:hone|ad;(?: U;)? CPU) OS (\d+)/);var IOS_TOUCH_SCROLLING=IOS&&IOS[1]>=8;var DEFAULT_PHYSICAL_COUNT=3;var HIDDEN_Y="-10000px";var ITEM_WIDTH=0;var ITEM_HEIGHT=1;var SECRET_TABINDEX=-100;Polymer({is:"iron-list",properties:{items:{type:Array},maxPhysicalCount:{type:Number,value:500},as:{type:String,value:"item"},indexAs:{type:String,value:"index"},selectedAs:{type:String,value:"selected"},grid:{type:Boolean,value:false,reflectToAttribute:true},selectionEnabled:{type:Boolean,value:false},selectedItem:{type:Object,notify:true},selectedItems:{type:Object,notify:true},multiSelection:{type:Boolean,value:false}},observers:["_itemsChanged(items.*)","_selectionEnabledChanged(selectionEnabled)","_multiSelectionChanged(multiSelection)","_setOverflow(scrollTarget)"],behaviors:[Polymer.Templatizer,Polymer.IronResizableBehavior,Polymer.IronA11yKeysBehavior,Polymer.IronScrollTargetBehavior],keyBindings:{up:"_didMoveUp",down:"_didMoveDown",enter:"_didEnter"},_ratio:.5,_scrollerPaddingTop:0,_scrollPosition:0,_physicalSize:0,_physicalAverage:0,_physicalAverageCount:0,_physicalTop:0,_virtualCount:0,_physicalIndexForKey:null,_estScrollHeight:0,_scrollHeight:0,_viewportHeight:0,_viewportWidth:0,_physicalItems:null,_physicalSizes:null,_firstVisibleIndexVal:null,_lastVisibleIndexVal:null,_collection:null,_maxPages:2,_focusedItem:null,_focusedIndex:-1,_offscreenFocusedItem:null,_focusBackfillItem:null,_itemsPerRow:1,_itemWidth:0,_rowHeight:0,_templateCost:0,get _physicalBottom(){return this._physicalTop+this._physicalSize},get _scrollBottom(){return this._scrollPosition+this._viewportHeight},get _virtualEnd(){return this._virtualStart+this._physicalCount-1},get _hiddenContentSize(){var size=this.grid?this._physicalRows*this._rowHeight:this._physicalSize;return size-this._viewportHeight},get _maxScrollTop(){return this._estScrollHeight-this._viewportHeight+this._scrollerPaddingTop},_minVirtualStart:0,get _maxVirtualStart(){return Math.max(0,this._virtualCount-this._physicalCount)},_virtualStartVal:0,set _virtualStart(val){this._virtualStartVal=Math.min(this._maxVirtualStart,Math.max(this._minVirtualStart,val))},get _virtualStart(){return this._virtualStartVal||0},_physicalStartVal:0,set _physicalStart(val){this._physicalStartVal=val%this._physicalCount;if(this._physicalStartVal<0){this._physicalStartVal=this._physicalCount+this._physicalStartVal}this._physicalEnd=(this._physicalStart+this._physicalCount-1)%this._physicalCount},get _physicalStart(){return this._physicalStartVal||0},_physicalCountVal:0,set _physicalCount(val){this._physicalCountVal=val;this._physicalEnd=(this._physicalStart+this._physicalCount-1)%this._physicalCount},get _physicalCount(){return this._physicalCountVal},_physicalEnd:0,get _optPhysicalSize(){if(this.grid){return this._estRowsInView*this._rowHeight*this._maxPages}return this._viewportHeight*this._maxPages},get _isVisible(){return Boolean(this.offsetWidth||this.offsetHeight)},get firstVisibleIndex(){if(this._firstVisibleIndexVal===null){var physicalOffset=Math.floor(this._physicalTop+this._scrollerPaddingTop);this._firstVisibleIndexVal=this._iterateItems(function(pidx,vidx){physicalOffset+=this._getPhysicalSizeIncrement(pidx);if(physicalOffset>this._scrollPosition){return this.grid?vidx-vidx%this._itemsPerRow:vidx}if(this.grid&&this._virtualCount-1===vidx){return vidx-vidx%this._itemsPerRow}})||0}return this._firstVisibleIndexVal},get lastVisibleIndex(){if(this._lastVisibleIndexVal===null){if(this.grid){var lastIndex=this.firstVisibleIndex+this._estRowsInView*this._itemsPerRow-1;this._lastVisibleIndexVal=Math.min(this._virtualCount,lastIndex)}else{var physicalOffset=this._physicalTop;this._iterateItems(function(pidx,vidx){if(physicalOffset<this._scrollBottom){this._lastVisibleIndexVal=vidx}else{return true}physicalOffset+=this._getPhysicalSizeIncrement(pidx)})}}return this._lastVisibleIndexVal},get _defaultScrollTarget(){return this},get _virtualRowCount(){return Math.ceil(this._virtualCount/this._itemsPerRow)},get _estRowsInView(){return Math.ceil(this._viewportHeight/this._rowHeight)},get _physicalRows(){return Math.ceil(this._physicalCount/this._itemsPerRow)},ready:function(){this.addEventListener("focus",this._didFocus.bind(this),true)},attached:function(){if(this._physicalCount===0){this._debounceTemplate(this._render)}this.listen(this,"iron-resize","_resizeHandler")},detached:function(){this.unlisten(this,"iron-resize","_resizeHandler")},_setOverflow:function(scrollTarget){this.style.webkitOverflowScrolling=scrollTarget===this?"touch":"";this.style.overflow=scrollTarget===this?"auto":""},updateViewportBoundaries:function(){this._scrollerPaddingTop=this.scrollTarget===this?0:parseInt(window.getComputedStyle(this)["padding-top"],10);this._viewportWidth=this.$.items.offsetWidth;this._viewportHeight=this._scrollTargetHeight;this.grid&&this._updateGridMetrics()},_scrollHandler:function(){var scrollTop=Math.max(0,Math.min(this._maxScrollTop,this._scrollTop));var delta=scrollTop-this._scrollPosition;var isScrollingDown=delta>=0;this._scrollPosition=scrollTop;this._firstVisibleIndexVal=null;this._lastVisibleIndexVal=null;if(Math.abs(delta)>this._physicalSize){var idxAdjustment=Math.round(delta/this._physicalAverage)*this._itemsPerRow;this._physicalTop=this._physicalTop+delta;this._virtualStart=this._virtualStart+idxAdjustment;this._physicalStart=this._physicalStart+idxAdjustment;this._update()}else{var reusables=this._getReusables(isScrollingDown);if(isScrollingDown){this._physicalTop=reusables.physicalTop;this._virtualStart=this._virtualStart+reusables.indexes.length;this._physicalStart=this._physicalStart+reusables.indexes.length}else{this._virtualStart=this._virtualStart-reusables.indexes.length;this._physicalStart=this._physicalStart-reusables.indexes.length}if(reusables.indexes.length===0){this._increasePoolIfNeeded()}else{this._update(reusables.indexes,isScrollingDown?null:reusables.indexes)}}},_getReusables:function(fromTop){var ith,lastIth,offsetContent,physicalItemHeight;var idxs=[];var protectedOffsetContent=this._hiddenContentSize*this._ratio;var virtualStart=this._virtualStart;var virtualEnd=this._virtualEnd;var physicalCount=this._physicalCount;var physicalTop=this._physicalTop+this._scrollerPaddingTop;var scrollTop=this._scrollTop;var scrollBottom=this._scrollBottom;if(fromTop){ith=this._physicalStart;lastIth=this._physicalEnd;offsetContent=scrollTop-physicalTop}else{ith=this._physicalEnd;lastIth=this._physicalStart;offsetContent=this._physicalBottom-scrollBottom}while(true){physicalItemHeight=this._getPhysicalSizeIncrement(ith);offsetContent=offsetContent-physicalItemHeight;if(idxs.length>=physicalCount||offsetContent<=protectedOffsetContent){break}if(fromTop){if(virtualEnd+idxs.length+1>=this._virtualCount){break}if(physicalTop+physicalItemHeight>=scrollTop){break}idxs.push(ith);physicalTop=physicalTop+physicalItemHeight;ith=(ith+1)%physicalCount}else{if(virtualStart-idxs.length<=0){break}if(physicalTop+this._physicalSize-physicalItemHeight<=scrollBottom){break}idxs.push(ith);physicalTop=physicalTop-physicalItemHeight;ith=ith===0?physicalCount-1:ith-1}}return{indexes:idxs,physicalTop:physicalTop-this._scrollerPaddingTop}},_update:function(itemSet,movingUp){if(itemSet&&itemSet.length===0){return}this._manageFocus();this._assignModels(itemSet);this._updateMetrics(itemSet);if(movingUp){while(movingUp.length){var idx=movingUp.pop();this._physicalTop-=this._getPhysicalSizeIncrement(idx)}}this._positionItems();this._updateScrollerSize();this._increasePoolIfNeeded()},_createPool:function(size){var physicalItems=new Array(size);this._ensureTemplatized();for(var i=0;i<size;i++){var inst=this.stamp(null);physicalItems[i]=inst.root.querySelector("*");Polymer.dom(this).appendChild(inst.root)}return physicalItems},_increasePoolIfNeeded:function(){if(this._viewportHeight===0){return false}var self=this;var isClientFull=this._physicalBottom>=this._scrollBottom&&this._physicalTop<=this._scrollPosition;if(this._physicalSize>=this._optPhysicalSize&&isClientFull){return false}var maxPoolSize=Math.round(this._physicalCount*.5);if(!isClientFull){this._debounceTemplate(this._increasePool.bind(this,maxPoolSize));return true}this._yield(function(){self._increasePool(Math.min(maxPoolSize,Math.max(1,Math.round(50/self._templateCost))))});return true},_yield:function(cb){var g=window;var handle=g.requestIdleCallback?g.requestIdleCallback(cb):g.setTimeout(cb,16);Polymer.dom.addDebouncer({complete:function(){g.cancelIdleCallback?g.cancelIdleCallback(handle):g.clearTimeout(handle);cb()}})},_increasePool:function(missingItems){var nextPhysicalCount=Math.min(this._physicalCount+missingItems,this._virtualCount-this._virtualStart,Math.max(this.maxPhysicalCount,DEFAULT_PHYSICAL_COUNT));var prevPhysicalCount=this._physicalCount;var delta=nextPhysicalCount-prevPhysicalCount;var ts=window.performance.now();if(delta<=0){return}[].push.apply(this._physicalItems,this._createPool(delta));[].push.apply(this._physicalSizes,new Array(delta));this._physicalCount=prevPhysicalCount+delta;if(this._physicalStart>this._physicalEnd&&this._isIndexRendered(this._focusedIndex)&&this._getPhysicalIndex(this._focusedIndex)<this._physicalEnd){this._physicalStart=this._physicalStart+delta}this._update();this._templateCost=(window.performance.now()-ts)/delta},_render:function(){if(this.isAttached&&this._isVisible){if(this._physicalCount===0){this.updateViewportBoundaries();this._increasePool(DEFAULT_PHYSICAL_COUNT)}else{var reusables=this._getReusables(true);this._physicalTop=reusables.physicalTop;this._virtualStart=this._virtualStart+reusables.indexes.length;this._physicalStart=this._physicalStart+reusables.indexes.length;this._update(reusables.indexes);this._update()}}},_ensureTemplatized:function(){if(!this.ctor){var props={};props.__key__=true;props[this.as]=true;props[this.indexAs]=true;props[this.selectedAs]=true;props.tabIndex=true;this._instanceProps=props;this._userTemplate=Polymer.dom(this).querySelector("template");if(this._userTemplate){this.templatize(this._userTemplate)}else{console.warn("iron-list requires a template to be provided in light-dom")}}},_getStampedChildren:function(){return this._physicalItems},_forwardInstancePath:function(inst,path,value){if(path.indexOf(this.as+".")===0){this.notifyPath("items."+inst.__key__+"."+path.slice(this.as.length+1),value)}},_forwardParentProp:function(prop,value){if(this._physicalItems){this._physicalItems.forEach(function(item){item._templateInstance[prop]=value},this)}},_forwardParentPath:function(path,value){if(this._physicalItems){this._physicalItems.forEach(function(item){item._templateInstance.notifyPath(path,value,true)},this)}},_forwardItemPath:function(path,value){if(!this._physicalIndexForKey){return}var dot=path.indexOf(".");var key=path.substring(0,dot<0?path.length:dot);var idx=this._physicalIndexForKey[key];var offscreenItem=this._offscreenFocusedItem;var el=offscreenItem&&offscreenItem._templateInstance.__key__===key?offscreenItem:this._physicalItems[idx];if(!el||el._templateInstance.__key__!==key){return}if(dot>=0){path=this.as+"."+path.substring(dot+1);el._templateInstance.notifyPath(path,value,true)}else{var currentItem=el._templateInstance[this.as];if(Array.isArray(this.selectedItems)){for(var i=0;i<this.selectedItems.length;i++){if(this.selectedItems[i]===currentItem){this.set("selectedItems."+i,value);break}}}else if(this.selectedItem===currentItem){this.set("selectedItem",value)}el._templateInstance[this.as]=value}},_itemsChanged:function(change){if(change.path==="items"){this._virtualStart=0;this._physicalTop=0;this._virtualCount=this.items?this.items.length:0;this._collection=this.items?Polymer.Collection.get(this.items):null;this._physicalIndexForKey={};this._firstVisibleIndexVal=null;this._lastVisibleIndexVal=null;this._physicalCount=this._physicalCount||0;this._physicalItems=this._physicalItems||[];this._physicalSizes=this._physicalSizes||[];this._physicalStart=0;this._resetScrollPosition(0);this._removeFocusedItem();this._debounceTemplate(this._render)}else if(change.path==="items.splices"){this._adjustVirtualIndex(change.value.indexSplices);this._virtualCount=this.items?this.items.length:0;this._debounceTemplate(this._render)}else{this._forwardItemPath(change.path.split(".").slice(1).join("."),change.value)}},_adjustVirtualIndex:function(splices){splices.forEach(function(splice){splice.removed.forEach(this._removeItem,this);if(splice.index<this._virtualStart){var delta=Math.max(splice.addedCount-splice.removed.length,splice.index-this._virtualStart);this._virtualStart=this._virtualStart+delta;if(this._focusedIndex>=0){this._focusedIndex=this._focusedIndex+delta}}},this)},_removeItem:function(item){this.$.selector.deselect(item);if(this._focusedItem&&this._focusedItem._templateInstance[this.as]===item){this._removeFocusedItem()}},_iterateItems:function(fn,itemSet){var pidx,vidx,rtn,i;if(arguments.length===2&&itemSet){for(i=0;i<itemSet.length;i++){pidx=itemSet[i];vidx=this._computeVidx(pidx);if((rtn=fn.call(this,pidx,vidx))!=null){return rtn}}}else{pidx=this._physicalStart;vidx=this._virtualStart;for(;pidx<this._physicalCount;pidx++,vidx++){if((rtn=fn.call(this,pidx,vidx))!=null){return rtn}}for(pidx=0;pidx<this._physicalStart;pidx++,vidx++){if((rtn=fn.call(this,pidx,vidx))!=null){return rtn}}}},_computeVidx:function(pidx){if(pidx>=this._physicalStart){return this._virtualStart+(pidx-this._physicalStart)}return this._virtualStart+(this._physicalCount-this._physicalStart)+pidx},_assignModels:function(itemSet){this._iterateItems(function(pidx,vidx){var el=this._physicalItems[pidx];var inst=el._templateInstance;var item=this.items&&this.items[vidx];if(item!=null){inst[this.as]=item;inst.__key__=this._collection.getKey(item);inst[this.selectedAs]=this.$.selector.isSelected(item);inst[this.indexAs]=vidx;inst.tabIndex=this._focusedIndex===vidx?0:-1;this._physicalIndexForKey[inst.__key__]=pidx;el.removeAttribute("hidden")}else{inst.__key__=null;el.setAttribute("hidden","")}},itemSet)},_updateMetrics:function(itemSet){Polymer.dom.flush();var newPhysicalSize=0;var oldPhysicalSize=0;var prevAvgCount=this._physicalAverageCount;var prevPhysicalAvg=this._physicalAverage;this._iterateItems(function(pidx,vidx){oldPhysicalSize+=this._physicalSizes[pidx]||0;this._physicalSizes[pidx]=this._physicalItems[pidx].offsetHeight;newPhysicalSize+=this._physicalSizes[pidx];this._physicalAverageCount+=this._physicalSizes[pidx]?1:0},itemSet);if(this.grid){this._updateGridMetrics();this._physicalSize=Math.ceil(this._physicalCount/this._itemsPerRow)*this._rowHeight}else{this._physicalSize=this._physicalSize+newPhysicalSize-oldPhysicalSize}if(this._physicalAverageCount!==prevAvgCount){this._physicalAverage=Math.round((prevPhysicalAvg*prevAvgCount+newPhysicalSize)/this._physicalAverageCount)}},_updateGridMetrics:function(){this._itemWidth=this._physicalCount>0?this._physicalItems[0].getBoundingClientRect().width:200;this._rowHeight=this._physicalCount>0?this._physicalItems[0].offsetHeight:200;this._itemsPerRow=this._itemWidth?Math.floor(this._viewportWidth/this._itemWidth):this._itemsPerRow},_positionItems:function(){this._adjustScrollPosition();var y=this._physicalTop;if(this.grid){var totalItemWidth=this._itemsPerRow*this._itemWidth;var rowOffset=(this._viewportWidth-totalItemWidth)/2;this._iterateItems(function(pidx,vidx){var modulus=vidx%this._itemsPerRow;var x=Math.floor(modulus*this._itemWidth+rowOffset);this.translate3d(x+"px",y+"px",0,this._physicalItems[pidx]);if(this._shouldRenderNextRow(vidx)){y+=this._rowHeight}})}else{this._iterateItems(function(pidx,vidx){this.translate3d(0,y+"px",0,this._physicalItems[pidx]);y+=this._physicalSizes[pidx]})}},_getPhysicalSizeIncrement:function(pidx){if(!this.grid){return this._physicalSizes[pidx]}if(this._computeVidx(pidx)%this._itemsPerRow!==this._itemsPerRow-1){return 0}return this._rowHeight},_shouldRenderNextRow:function(vidx){return vidx%this._itemsPerRow===this._itemsPerRow-1},_adjustScrollPosition:function(){var deltaHeight=this._virtualStart===0?this._physicalTop:Math.min(this._scrollPosition+this._physicalTop,0);if(deltaHeight){this._physicalTop=this._physicalTop-deltaHeight;if(!IOS_TOUCH_SCROLLING&&this._physicalTop!==0){this._resetScrollPosition(this._scrollTop-deltaHeight)}}},_resetScrollPosition:function(pos){if(this.scrollTarget){this._scrollTop=pos;this._scrollPosition=this._scrollTop}},_updateScrollerSize:function(forceUpdate){if(this.grid){this._estScrollHeight=this._virtualRowCount*this._rowHeight}else{this._estScrollHeight=this._physicalBottom+Math.max(this._virtualCount-this._physicalCount-this._virtualStart,0)*this._physicalAverage}forceUpdate=forceUpdate||this._scrollHeight===0;forceUpdate=forceUpdate||this._scrollPosition>=this._estScrollHeight-this._physicalSize;forceUpdate=forceUpdate||this.grid&&this.$.items.style.height<this._estScrollHeight;if(forceUpdate||Math.abs(this._estScrollHeight-this._scrollHeight)>=this._optPhysicalSize){this.$.items.style.height=this._estScrollHeight+"px";this._scrollHeight=this._estScrollHeight}},scrollToItem:function(item){return this.scrollToIndex(this.items.indexOf(item))},scrollToIndex:function(idx){if(typeof idx!=="number"||idx<0||idx>this.items.length-1){return}Polymer.dom.flush();if(this._physicalCount===0){return}idx=Math.min(Math.max(idx,0),this._virtualCount-1);if(!this._isIndexRendered(idx)||idx>=this._maxVirtualStart){this._virtualStart=this.grid?idx-this._itemsPerRow*2:idx-1}this._manageFocus();this._assignModels();this._updateMetrics();this._physicalTop=Math.floor(this._virtualStart/this._itemsPerRow)*this._physicalAverage;var currentTopItem=this._physicalStart;var currentVirtualItem=this._virtualStart;var targetOffsetTop=0;var hiddenContentSize=this._hiddenContentSize;while(currentVirtualItem<idx&&targetOffsetTop<=hiddenContentSize){targetOffsetTop=targetOffsetTop+this._getPhysicalSizeIncrement(currentTopItem);currentTopItem=(currentTopItem+1)%this._physicalCount;currentVirtualItem++}this._updateScrollerSize(true);this._positionItems();this._resetScrollPosition(this._physicalTop+this._scrollerPaddingTop+targetOffsetTop);this._increasePoolIfNeeded();this._firstVisibleIndexVal=null;this._lastVisibleIndexVal=null},_resetAverage:function(){this._physicalAverage=0;this._physicalAverageCount=0},_resizeHandler:function(){var delta=Math.abs(this._viewportHeight-this._scrollTargetHeight);if(IOS&&delta>0&&delta<100){return}Polymer.dom.addDebouncer(this.debounce("_debounceTemplate",function(){this.updateViewportBoundaries();this._render();if(this._isVisible){this.toggleScrollListener(true);if(this._physicalCount>0){this._resetAverage();this.scrollToIndex(this.firstVisibleIndex)}}else{this.toggleScrollListener(false)}}.bind(this),1))},_getModelFromItem:function(item){var key=this._collection.getKey(item);var pidx=this._physicalIndexForKey[key];if(pidx!=null){return this._physicalItems[pidx]._templateInstance}return null},_getNormalizedItem:function(item){if(this._collection.getKey(item)===undefined){if(typeof item==="number"){item=this.items[item];if(!item){throw new RangeError("<item> not found")}return item}throw new TypeError("<item> should be a valid item")}return item},selectItem:function(item){item=this._getNormalizedItem(item);var model=this._getModelFromItem(item);if(!this.multiSelection&&this.selectedItem){this.deselectItem(this.selectedItem)}if(model){model[this.selectedAs]=true}this.$.selector.select(item);this.updateSizeForItem(item)},deselectItem:function(item){item=this._getNormalizedItem(item);var model=this._getModelFromItem(item);if(model){model[this.selectedAs]=false}this.$.selector.deselect(item);this.updateSizeForItem(item)},toggleSelectionForItem:function(item){item=this._getNormalizedItem(item);if(this.$.selector.isSelected(item)){this.deselectItem(item)}else{this.selectItem(item)}},clearSelection:function(){function unselect(item){var model=this._getModelFromItem(item);if(model){model[this.selectedAs]=false}}if(Array.isArray(this.selectedItems)){this.selectedItems.forEach(unselect,this)}else if(this.selectedItem){unselect.call(this,this.selectedItem)}this.$.selector.clearSelection()},_selectionEnabledChanged:function(selectionEnabled){var handler=selectionEnabled?this.listen:this.unlisten;handler.call(this,this,"tap","_selectionHandler")},_selectionHandler:function(e){var model=this.modelForElement(e.target);if(!model){return}var modelTabIndex,activeElTabIndex;var target=Polymer.dom(e).path[0];var activeEl=Polymer.dom(this.domHost?this.domHost.root:document).activeElement;var physicalItem=this._physicalItems[this._getPhysicalIndex(model[this.indexAs])];if(target.localName==="input"||target.localName==="button"||target.localName==="select"){return}modelTabIndex=model.tabIndex;model.tabIndex=SECRET_TABINDEX;activeElTabIndex=activeEl?activeEl.tabIndex:-1;model.tabIndex=modelTabIndex;if(activeEl&&physicalItem!==activeEl&&physicalItem.contains(activeEl)&&activeElTabIndex!==SECRET_TABINDEX){return}this.toggleSelectionForItem(model[this.as])},_multiSelectionChanged:function(multiSelection){this.clearSelection();this.$.selector.multi=multiSelection},updateSizeForItem:function(item){item=this._getNormalizedItem(item);var key=this._collection.getKey(item);var pidx=this._physicalIndexForKey[key];if(pidx!=null){this._updateMetrics([pidx]);this._positionItems()}},_manageFocus:function(){var fidx=this._focusedIndex;if(fidx>=0&&fidx<this._virtualCount){if(this._isIndexRendered(fidx)){this._restoreFocusedItem()}else{this._createFocusBackfillItem()}}else if(this._virtualCount>0&&this._physicalCount>0){this._focusedIndex=this._virtualStart;this._focusedItem=this._physicalItems[this._physicalStart]}},_isIndexRendered:function(idx){return idx>=this._virtualStart&&idx<=this._virtualEnd},_isIndexVisible:function(idx){return idx>=this.firstVisibleIndex&&idx<=this.lastVisibleIndex},_getPhysicalIndex:function(idx){return this._physicalIndexForKey[this._collection.getKey(this._getNormalizedItem(idx))]},_focusPhysicalItem:function(idx){if(idx<0||idx>=this._virtualCount){return}this._restoreFocusedItem();if(!this._isIndexRendered(idx)){this.scrollToIndex(idx)}var physicalItem=this._physicalItems[this._getPhysicalIndex(idx)];var model=physicalItem._templateInstance;var focusable;model.tabIndex=SECRET_TABINDEX;if(physicalItem.tabIndex===SECRET_TABINDEX){focusable=physicalItem}if(!focusable){focusable=Polymer.dom(physicalItem).querySelector('[tabindex="'+SECRET_TABINDEX+'"]')}model.tabIndex=0;this._focusedIndex=idx;focusable&&focusable.focus()},_removeFocusedItem:function(){if(this._offscreenFocusedItem){Polymer.dom(this).removeChild(this._offscreenFocusedItem)}this._offscreenFocusedItem=null;this._focusBackfillItem=null;this._focusedItem=null;this._focusedIndex=-1},_createFocusBackfillItem:function(){var fidx=this._focusedIndex;var pidx=this._getPhysicalIndex(fidx);if(this._offscreenFocusedItem||pidx==null||fidx<0){return}if(!this._focusBackfillItem){var stampedTemplate=this.stamp(null);this._focusBackfillItem=stampedTemplate.root.querySelector("*");Polymer.dom(this).appendChild(stampedTemplate.root)}this._offscreenFocusedItem=this._physicalItems[pidx];this._offscreenFocusedItem._templateInstance.tabIndex=0;this._physicalItems[pidx]=this._focusBackfillItem;this.translate3d(0,HIDDEN_Y,0,this._offscreenFocusedItem)},_restoreFocusedItem:function(){var pidx,fidx=this._focusedIndex;if(!this._offscreenFocusedItem||this._focusedIndex<0){return}this._assignModels();pidx=this._getPhysicalIndex(fidx);if(pidx!=null){this._focusBackfillItem=this._physicalItems[pidx];this._focusBackfillItem._templateInstance.tabIndex=-1;this._physicalItems[pidx]=this._offscreenFocusedItem;this._offscreenFocusedItem=null;this.translate3d(0,HIDDEN_Y,0,this._focusBackfillItem)}},_didFocus:function(e){var targetModel=this.modelForElement(e.target);var focusedModel=this._focusedItem?this._focusedItem._templateInstance:null;var hasOffscreenFocusedItem=this._offscreenFocusedItem!==null;var fidx=this._focusedIndex;if(!targetModel||!focusedModel){return}if(focusedModel===targetModel){if(!this._isIndexVisible(fidx)){this.scrollToIndex(fidx)}}else{this._restoreFocusedItem();focusedModel.tabIndex=-1;targetModel.tabIndex=0;fidx=targetModel[this.indexAs];this._focusedIndex=fidx;this._focusedItem=this._physicalItems[this._getPhysicalIndex(fidx)];if(hasOffscreenFocusedItem&&!this._offscreenFocusedItem){this._update()}}},_didMoveUp:function(){this._focusPhysicalItem(this._focusedIndex-1)},_didMoveDown:function(e){e.detail.keyboardEvent.preventDefault();this._focusPhysicalItem(this._focusedIndex+1)},_didEnter:function(e){this._focusPhysicalItem(this._focusedIndex);this._selectionHandler(e.detail.keyboardEvent)}})})();Polymer({is:"iron-scroll-threshold",properties:{upperThreshold:{type:Number,value:100},lowerThreshold:{type:Number,value:100},upperTriggered:{type:Boolean,value:false,notify:true,readOnly:true},lowerTriggered:{type:Boolean,value:false,notify:true,readOnly:true},horizontal:{type:Boolean,value:false}},behaviors:[Polymer.IronScrollTargetBehavior],observers:["_setOverflow(scrollTarget)","_initCheck(horizontal, isAttached)"],get _defaultScrollTarget(){return this},_setOverflow:function(scrollTarget){this.style.overflow=scrollTarget===this?"auto":""},_scrollHandler:function(){var THROTTLE_THRESHOLD=200;if(!this.isDebouncerActive("_checkTheshold")){this.debounce("_checkTheshold",function(){this.checkScrollThesholds()},THROTTLE_THRESHOLD)}},_initCheck:function(horizontal,isAttached){if(isAttached){this.debounce("_init",function(){this.clearTriggers();this.checkScrollThesholds()})}},checkScrollThesholds:function(){if(!this.scrollTarget||this.lowerTriggered&&this.upperTriggered){return}var upperScrollValue=this.horizontal?this._scrollLeft:this._scrollTop;var lowerScrollValue=this.horizontal?this.scrollTarget.scrollWidth-this._scrollTargetWidth-this._scrollLeft:this.scrollTarget.scrollHeight-this._scrollTargetHeight-this._scrollTop;if(upperScrollValue<=this.upperThreshold&&!this.upperTriggered){this._setUpperTriggered(true);this.fire("upper-threshold")}if(lowerScrollValue<=this.lowerThreshold&&!this.lowerTriggered){this._setLowerTriggered(true);this.fire("lower-threshold")}},clearTriggers:function(){this._setUpperTriggered(false);this._setLowerTriggered(false)}});
 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 var EventTrackerEntry;function EventTracker(){this.listeners_=[]}EventTracker.prototype={add:function(target,eventType,listener,opt_capture){var capture=!!opt_capture;var h={target:target,eventType:eventType,listener:listener,capture:capture};this.listeners_.push(h);target.addEventListener(eventType,listener,capture)},remove:function(target,eventType){this.listeners_=this.listeners_.filter(function(h){if(h.target==target&&(!eventType||h.eventType==eventType)){EventTracker.removeEventListener_(h);return false}return true})},removeAll:function(){this.listeners_.forEach(EventTracker.removeEventListener_);this.listeners_=[]}};EventTracker.removeEventListener_=function(h){h.target.removeEventListener(h.eventType,h.listener,h.capture)};
 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 cr.define("cr.ui",function(){function FocusRow(root,boundary,opt_delegate){this.root=root;this.boundary_=boundary||document.documentElement;this.delegate=opt_delegate;this.eventTracker=new EventTracker}FocusRow.Delegate=function(){};FocusRow.Delegate.prototype={onKeydown:assertNotReached,onFocus:assertNotReached};FocusRow.ACTIVE_CLASS="focus-row-active";FocusRow.isFocusable=function(element){if(!element||element.disabled)return false;function isVisible(element){assertInstanceof(element,Element);var style=window.getComputedStyle(element);if(style.visibility=="hidden"||style.display=="none")return false;var parent=element.parentNode;if(!parent)return false;if(parent==element.ownerDocument||parent instanceof DocumentFragment)return true;return isVisible(parent)}return isVisible(element)};FocusRow.prototype={addItem:function(type,query){assert(type);var element=this.root.querySelector(query);if(!element)return false;element.setAttribute("focus-type",type);element.tabIndex=this.isActive()?0:-1;this.eventTracker.add(element,"blur",this.onBlur_.bind(this));this.eventTracker.add(element,"focus",this.onFocus_.bind(this));this.eventTracker.add(element,"keydown",this.onKeydown_.bind(this));this.eventTracker.add(element,"mousedown",this.onMousedown_.bind(this));return true},destroy:function(){this.eventTracker.removeAll()},getCustomEquivalent:function(sampleElement){return assert(this.getFirstFocusable())},getElements:function(){var elements=this.root.querySelectorAll("[focus-type]");return Array.prototype.slice.call(elements)},getEquivalentElement:function(sampleElement){if(this.getFocusableElements().indexOf(sampleElement)>=0)return sampleElement;var sampleFocusType=this.getTypeForElement(sampleElement);if(sampleFocusType){var sameType=this.getFirstFocusable(sampleFocusType);if(sameType)return sameType}return this.getCustomEquivalent(sampleElement)},getFirstFocusable:function(opt_type){var filter=opt_type?'="'+opt_type+'"':"";var elements=this.root.querySelectorAll("[focus-type"+filter+"]");for(var i=0;i<elements.length;++i){if(cr.ui.FocusRow.isFocusable(elements[i]))return elements[i]}return null},getFocusableElements:function(){return this.getElements().filter(cr.ui.FocusRow.isFocusable)},getTypeForElement:function(element){return element.getAttribute("focus-type")||""},isActive:function(){return this.root.classList.contains(FocusRow.ACTIVE_CLASS)},makeActive:function(active){if(active==this.isActive())return;this.getElements().forEach(function(element){element.tabIndex=active?0:-1});this.root.classList.toggle(FocusRow.ACTIVE_CLASS,active)},onBlur_:function(e){if(!this.boundary_.contains(e.relatedTarget))return;var currentTarget=e.currentTarget;if(this.getFocusableElements().indexOf(currentTarget)>=0)this.makeActive(false)},onFocus_:function(e){if(this.delegate)this.delegate.onFocus(this,e)},onMousedown_:function(e){if(e.button)return;if(!e.currentTarget.disabled)e.currentTarget.tabIndex=0},onKeydown_:function(e){var elements=this.getFocusableElements();var currentElement=e.currentTarget;var elementIndex=elements.indexOf(currentElement);assert(elementIndex>=0);if(this.delegate&&this.delegate.onKeydown(this,e))return;if(hasKeyModifiers(e))return;var index=-1;if(e.key=="ArrowLeft")index=elementIndex+(isRTL()?1:-1);else if(e.key=="ArrowRight")index=elementIndex+(isRTL()?-1:1);else if(e.key=="Home")index=0;else if(e.key=="End")index=elements.length-1;var elementToFocus=elements[index];if(elementToFocus){this.getEquivalentElement(elementToFocus).focus();e.preventDefault()}}};return{FocusRow:FocusRow}});
 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
@@ skipping 24 matching lines @@
 // found in the LICENSE file.
 Polymer({is:"history-router",properties:{selectedPage:{type:String,observer:"serializePath_",notify:true},queryState:{type:Object,notify:true},path_:{type:String,observer:"pathChanged_"},queryParams_:Object},observers:["queryParamsChanged_(queryParams_.*)","searchTermChanged_(queryState.searchTerm)"],attached:function(){if(window.location.hash){window.location.href=window.location.href.split("#")[0]+"?"+window.location.hash.substr(1)}},serializePath_:function(){var page=this.selectedPage=="history"?"":this.selectedPage;this.path_="/"+page},pathChanged_:function(){var sections=this.path_.substr(1).split("/");this.selectedPage=sections[0]||"history"},queryParamsChanged_:function(){this.set("queryState.searchTerm",this.queryParams_.q||"")},searchTermChanged_:function(){this.set("queryParams_.q",this.queryState.searchTerm||null)}});Polymer.IronMultiSelectableBehaviorImpl={properties:{multi:{type:Boolean,value:false,observer:"multiChanged"},selectedValues:{type:Array,notify:true},selectedItems:{type:Array,readOnly:true,notify:true}},observers:["_updateSelected(selectedValues.splices)"],select:function(value){if(this.multi){if(this.selectedValues){this._toggleSelected(value)}else{this.selectedValues=[value]}}else{this.selected=value}},multiChanged:function(multi){this._selection.multi=multi},get _shouldUpdateSelection(){return this.selected!=null||this.selectedValues!=null&&this.selectedValues.length},_updateAttrForSelected:function(){if(!this.multi){Polymer.IronSelectableBehavior._updateAttrForSelected.apply(this)}else if(this._shouldUpdateSelection){this.selectedValues=this.selectedItems.map(function(selectedItem){return this._indexToValue(this.indexOf(selectedItem))},this).filter(function(unfilteredValue){return unfilteredValue!=null},this)}},_updateSelected:function(){if(this.multi){this._selectMulti(this.selectedValues)}else{this._selectSelected(this.selected)}},_selectMulti:function(values){if(values){var selectedItems=this._valuesToItems(values);this._selection.clear(selectedItems);for(var i=0;i<selectedItems.length;i++){this._selection.setItemSelected(selectedItems[i],true)}if(this.fallbackSelection&&this.items.length&&!this._selection.get().length){var fallback=this._valueToItem(this.fallbackSelection);if(fallback){this.selectedValues=[this.fallbackSelection]}}}else{this._selection.clear()}},_selectionChange:function(){var s=this._selection.get();if(this.multi){this._setSelectedItems(s)}else{this._setSelectedItems([s]);this._setSelectedItem(s)}},_toggleSelected:function(value){var i=this.selectedValues.indexOf(value);var unselected=i<0;if(unselected){this.push("selectedValues",value)}else{this.splice("selectedValues",i,1)}},_valuesToItems:function(values){return values==null?null:values.map(function(value){return this._valueToItem(value)},this)}};Polymer.IronMultiSelectableBehavior=[Polymer.IronSelectableBehavior,Polymer.IronMultiSelectableBehaviorImpl];Polymer({is:"iron-selector",behaviors:[Polymer.IronMultiSelectableBehavior]});
 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 Polymer({is:"history-side-bar",behaviors:[Polymer.IronA11yKeysBehavior],properties:{selectedPage:{type:String,notify:true},showFooter:Boolean},keyBindings:{"space:keydown":"onSpacePressed_"},onSpacePressed_:function(e){e.detail.keyboardEvent.path[0].click()},onSelectorActivate_:function(){this.fire("history-close-drawer")},onClearBrowsingDataTap_:function(e){var browserService=md_history.BrowserService.getInstance();browserService.recordAction("InitClearBrowsingData");browserService.openClearBrowsingData();this.$["cbd-ripple"].upAction();e.preventDefault()},onItemClick_:function(e){e.preventDefault()}});
 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 cr.define("md_history",function(){var lazyLoadPromise=null;function ensureLazyLoaded(){if(!lazyLoadPromise){lazyLoadPromise=new Promise(function(resolve,reject){Polymer.Base.importHref("chrome://history/lazy_load.html",resolve,reject,true)})}return lazyLoadPromise}return{ensureLazyLoaded:ensureLazyLoaded}});Polymer({is:"history-app",behaviors:[Polymer.IronScrollTargetBehavior],properties:{selectedPage_:{type:String,observer:"selectedPageChanged_"},grouped_:{type:Boolean,reflectToAttribute:true},queryState_:{type:Object,value:function(){return{incremental:false,querying:true,queryingDisabled:false,_range:HistoryRange.ALL_TIME,searchTerm:"",groupedOffset:0,set range(val){this._range=Number(val)},get range(){return this._range}}}},queryResult_:{type:Object,value:function(){return{info:null,results:null,sessionList:null}}},isUserSignedIn_:{type:Boolean,value:loadTimeData.getBoolean("isUserSignedIn")},toolbarShadow_:{type:Boolean,reflectToAttribute:true,notify:true},showMenuPromo_:{type:Boolean,value:function(){return loadTimeData.getBoolean("showMenuPromo")}},hasDrawer_:{type:Boolean,observer:"hasDrawerChanged_"},showSidebarFooter:Boolean,hasSyncedResults:Boolean},listeners:{"cr-toolbar-menu-promo-close":"onCrToolbarMenuPromoClose_","cr-toolbar-menu-promo-shown":"onCrToolbarMenuPromoShown_","cr-toolbar-menu-tap":"onCrToolbarMenuTap_","delete-selected":"deleteSelected","history-checkbox-select":"checkboxSelected","history-close-drawer":"closeDrawer_","history-view-changed":"historyViewChanged_","opened-changed":"onOpenedChanged_","unselect-all":"unselectAll"},boundOnCanExecute_:null,boundOnCommand_:null,attached:function(){this.grouped_=loadTimeData.getBoolean("groupByDomain");cr.ui.decorate("command",cr.ui.Command);this.boundOnCanExecute_=this.onCanExecute_.bind(this);this.boundOnCommand_=this.onCommand_.bind(this);document.addEventListener("canExecute",this.boundOnCanExecute_);document.addEventListener("command",this.boundOnCommand_)},detached:function(){document.removeEventListener("canExecute",this.boundOnCanExecute_);document.removeEventListener("command",this.boundOnCommand_)},onFirstRender:function(){setTimeout(function(){chrome.send("metricsHandler:recordTime",["History.ResultsRenderedTime",window.performance.now()])});var searchField=this.$.toolbar.searchField;if(!searchField.narrow){searchField.getSearchInput().focus()}md_history.ensureLazyLoaded().then(function(){window.requestIdleCallback(function(){document.fonts.load("bold 12px Roboto")})})},_scrollHandler:function(){if(this.scrollTarget)this.toolbarShadow_=this.scrollTarget.scrollTop!=0},onCrToolbarMenuPromoClose_:function(){this.showMenuPromo_=false},onCrToolbarMenuPromoShown_:function(){md_history.BrowserService.getInstance().menuPromoShown()},onCrToolbarMenuTap_:function(){var drawer=this.$.drawer.get();drawer.align=document.documentElement.dir=="ltr"?"left":"right";drawer.toggle()},onOpenedChanged_:function(e){if(e.detail.value)this.showMenuPromo_=false},checkboxSelected:function(e){var toolbar=this.$.toolbar;toolbar.count=this.$.history.getSelectedItemCount()},unselectAll:function(){var listContainer=this.$.history;var toolbar=this.$.toolbar;listContainer.unselectAllItems(toolbar.count);toolbar.count=0},deleteSelected:function(){this.$.history.deleteSelectedWithPrompt()},historyResult:function(info,results){this.set("queryState_.querying",false);this.set("queryResult_.info",info);this.set("queryResult_.results",results);var listContainer=this.$["history"];listContainer.historyResult(info,results)},focusToolbarSearchField:function(){this.$.toolbar.showSearchField()},onCanExecute_:function(e){e=e;switch(e.command.id){case"find-command":case"toggle-grouped":e.canExecute=true;break;case"slash-command":e.canExecute=!this.$.toolbar.searchField.isSearchFocused();break;case"delete-command":e.canExecute=this.$.toolbar.count>0;break}},onCommand_:function(e){if(e.command.id=="find-command"||e.command.id=="slash-command")this.focusToolbarSearchField();if(e.command.id=="delete-command")this.deleteSelected();if(e.command.id=="toggle-grouped")this.grouped_=!this.grouped_},setForeignSessions:function(sessionList){this.set("queryResult_.sessionList",sessionList)},historyDeleted:function(){this.$.history.historyDeleted()},updateSignInState:function(isUserSignedIn){this.isUserSignedIn_=isUserSignedIn},syncedTabsSelected_:function(selectedPage){return selectedPage=="syncedTabs"},shouldShowSpinner_:function(querying,incremental,searchTerm){return querying&&!incremental&&searchTerm!=""},showSyncNotice_:function(hasSyncedResults,selectedPage){return hasSyncedResults&&selectedPage!="syncedTabs"},selectedPageChanged_:function(){this.unselectAll();this.historyViewChanged_()},historyViewChanged_:function(){requestAnimationFrame(function(){md_history.ensureLazyLoaded().then(function(){if(!this.$.content.selectedItem)return;this.scrollTarget=this.$.content.selectedItem.getContentScrollTarget();this._scrollHandler()}.bind(this))}.bind(this));this.recordHistoryPageView_()},hasDrawerChanged_:function(){var drawer=this.$.drawer.getIfExists();if(!this.hasDrawer_&&drawer&&drawer.open)drawer.closeDrawer()},getSelectedPage_:function(selectedPage,items){return selectedPage},closeDrawer_:function(){var drawer=this.$.drawer.get();if(drawer&&drawer.open)drawer.closeDrawer()},recordHistoryPageView_:function(){var histogramValue=HistoryPageViewHistogram.END;switch(this.selectedPage_){case"syncedTabs":histogramValue=this.isUserSignedIn_?HistoryPageViewHistogram.SYNCED_TABS:HistoryPageViewHistogram.SIGNIN_PROMO;break;default:switch(this.queryState_.range){case HistoryRange.ALL_TIME:histogramValue=HistoryPageViewHistogram.HISTORY;break;case HistoryRange.WEEK:histogramValue=HistoryPageViewHistogram.GROUPED_WEEK;break;case HistoryRange.MONTH:histogramValue=HistoryPageViewHistogram.GROUPED_MONTH;break}break}md_history.BrowserService.getInstance().recordHistogram("History.HistoryPageView",histogramValue,HistoryPageViewHistogram.END)}});