;(function(exports){'use strict';function round(x){return Math.round(x*100)/100;}
function MozSampleSize(n,scale){return Object.freeze({dimensionScale:round(scale),areaScale:round(scale*scale),toString:function(){return'#-moz-samplesize='+n;},scale:function(x){return Math.ceil(x*scale);}});}
var NONE=Object.freeze({dimensionScale:1,areaScale:1,toString:function(){return'';},scale:function(x){return x;}});var fragments=[NONE,MozSampleSize(2,1/2),MozSampleSize(3,3/8),MozSampleSize(4,1/4),MozSampleSize(8,1/8)];function sizeAtLeast(scale){scale=round(scale);for(var i=0;i<fragments.length;i++){var f=fragments[i];if(f.dimensionScale<=scale){return f;}}
return fragments[fragments.length-1];}
function sizeNoMoreThan(scale){scale=round(scale);for(var i=fragments.length-1;i>=0;i--){var f=fragments[i];if(f.dimensionScale>=scale){return f;}}
return NONE;}
function areaAtLeast(scale){scale=round(scale);for(var i=0;i<fragments.length;i++){var f=fragments[i];if(f.areaScale<=scale){return f;}}
return fragments[fragments.length-1];}
function areaNoMoreThan(scale){scale=round(scale);for(var i=fragments.length-1;i>=0;i--){var f=fragments[i];if(f.areaScale>=scale){return f;}}
return NONE;}
exports.Downsample={sizeAtLeast:sizeAtLeast,sizeNoMoreThan:sizeNoMoreThan,areaAtLeast:areaAtLeast,areaNoMoreThan:areaNoMoreThan,NONE:NONE,MAX_SIZE_REDUCTION:1/fragments[fragments.length-1].dimensionScale,MAX_AREA_REDUCTION:1/fragments[fragments.length-1].areaScale};}(window));;window.COMPONENTS_BASE_URL='/shared/elements/';;(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.GaiaHeader=f()}})(function(){var define,module,exports;return(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){;(function(define){define(function(require,exports,module){'use strict';var debug=0?console.log.bind(console):function(){};var cache={};var MIN=16;var MAX=24;var BUFFER=3;module.exports=function(config){debug('font fit',config);var space=config.space-BUFFER;var min=config.min||MIN;var max=config.max||MAX;var text=trim(config.text);var fontSize=max;var textWidth;var font;do{font=config.font.replace(/\d+px/,fontSize+'px');textWidth=getTextWidth(text,font);}while(textWidth>space&&fontSize!==min&&fontSize--);return{textWidth:textWidth,fontSize:fontSize,overflowing:textWidth>space};};function getTextWidth(text,font){var ctx=getCanvasContext(font);var width=ctx.measureText(text).width;debug('got text width',width);return width;}
function getCanvasContext(font){debug('get canvas context',font);var cached=cache[font];if(cached){return cached;}
var canvas=document.createElement('canvas');canvas.setAttribute('moz-opaque','true');canvas.setAttribute('width','1px');canvas.setAttribute('height','1px');debug('created canvas',canvas);var ctx=canvas.getContext('2d',{willReadFrequently:true});ctx.font=font;return cache[font]=ctx;}
function trim(text){return text.replace(/\s+/g,' ').trim();}});})(typeof define=='function'&&define.amd?define:(function(n,w){'use strict';return typeof module=='object'?function(c){c(require,exports,module);}:function(c){var m={exports:{}};c(function(n){return w[n];},m.exports,m);w[n]=m.exports;};})('font-fit',this));},{}],2:[function(require,module,exports){;(function(define){'use strict';define(function(require,exports,module){var textContent=Object.getOwnPropertyDescriptor(Node.prototype,'textContent');var innerHTML=Object.getOwnPropertyDescriptor(Element.prototype,'innerHTML');var removeAttribute=Element.prototype.removeAttribute;var setAttribute=Element.prototype.setAttribute;var noop=function(){};exports.register=function(name,props){var baseProto=getBaseProto(props.extends);var template=props.template||baseProto.templateString;var extensible=props.extensible=props.hasOwnProperty('extensible')?props.extensible:true;delete props.extends;if(template){if(extensible&&props.template){props.templateString=props.template;}
var output=processCss(template,name);props.template=document.createElement('template');props.template.innerHTML=output.template;props.lightCss=output.lightCss;props.globalCss=props.globalCss||'';props.globalCss+=output.globalCss;}
injectGlobalCss(props.globalCss);delete props.globalCss;var descriptors=mixin(props.attrs||{},base.descriptors);props._attrs=props.attrs;delete props.attrs;var proto=createProto(baseProto,props);Object.defineProperties(proto,descriptors);try{return document.registerElement(name,{prototype:proto});}catch(e){if(e.name!=='NotSupportedError'){throw e;}}};var base={properties:{GaiaComponent:true,attributeChanged:noop,attached:noop,detached:noop,created:noop,createdCallback:function(){if(this.dirObserver){addDirObserver();}
injectLightCss(this);this.created();},attributeChangedCallback:function(name,from,to){var prop=toCamelCase(name);if(this._attrs&&this._attrs[prop]){this[prop]=to;}
this.attributeChanged(name,from,to);},attachedCallback:function(){if(this.dirObserver){this.setInnerDirAttributes=setInnerDirAttributes.bind(null,this);document.addEventListener('dirchanged',this.setInnerDirAttributes);}
this.attached();},detachedCallback:function(){if(this.dirObserver){document.removeEventListener('dirchanged',this.setInnerDirAttributes);}
this.detached();},setupShadowRoot:function(){if(!this.template){return;}
var node=document.importNode(this.template.content,true);this.createShadowRoot().appendChild(node);if(this.dirObserver){setInnerDirAttributes(this);}
return this.shadowRoot;},setAttr:function(name,value){var internal=this.shadowRoot.firstElementChild;setAttribute.call(internal,name,value);setAttribute.call(this,name,value);},removeAttr:function(name){var internal=this.shadowRoot.firstElementChild;removeAttribute.call(internal,name);removeAttribute.call(this,name);}},descriptors:{textContent:{set:function(value){textContent.set.call(this,value);if(this.lightStyle){this.appendChild(this.lightStyle);}},get:function(){return textContent.get();}},innerHTML:{set:function(value){innerHTML.set.call(this,value);if(this.lightStyle){this.appendChild(this.lightStyle);}},get:innerHTML.get}}};var defaultPrototype=createProto(HTMLElement.prototype,base.properties);function getBaseProto(proto){if(!proto){return defaultPrototype;}
proto=proto.prototype||proto;return!proto.GaiaComponent?createProto(proto,base.properties):proto;}
function createProto(proto,props){return mixin(Object.create(proto),props);}
var hasShadowCSS=(function(){var div=document.createElement('div');try{div.querySelector(':host');div.querySelector('::content');return true;}
catch(e){return false;}})();var regex={shadowCss:/(?:\:host|\:\:content)[^{]*\{[^}]*\}/g,':host':/(?:\:host)/g,':host()':/\:host\((.+)\)(?: \:\:content)?/g,':host-context':/\:host-context\((.+)\)([^{,]+)?/g,'::content':/(?:\:\:content)/g};function processCss(template,name){var globalCss='';var lightCss='';if(!hasShadowCSS){template=template.replace(regex.shadowCss,function(match){var hostContext=regex[':host-context'].exec(match);if(hostContext){globalCss+=match.replace(regex['::content'],'').replace(regex[':host-context'],'$1 '+name+'$2').replace(/ +/g,' ');}else{lightCss+=match.replace(regex[':host()'],name+'$1').replace(regex[':host'],name).replace(regex['::content'],name);}
return'';});}
return{template:template,lightCss:lightCss,globalCss:globalCss};}
function injectGlobalCss(css){if(!css){return;}
var style=document.createElement('style');style.innerHTML=css.trim();headReady().then(function(){document.head.appendChild(style);});}
function headReady(){return new Promise(function(resolve){if(document.head){return resolve();}
window.addEventListener('load',function fn(){window.removeEventListener('load',fn);resolve();});});}
function injectLightCss(el){if(hasShadowCSS){return;}
var stylesheet=el.querySelector('style');if(!stylesheet){stylesheet=document.createElement('style');stylesheet.setAttribute('scoped','');stylesheet.appendChild(document.createTextNode(el.lightCss));el.appendChild(stylesheet);}
el.lightStyle=stylesheet;}
function toCamelCase(string){return string.replace(/-(.)/g,function replacer(string,p1){return p1.toUpperCase();});}
var dirObserver;function setInnerDirAttributes(component){var dir=component.dir||document.dir;Array.from(component.shadowRoot.children).forEach(element=>{if(element.nodeName!=='STYLE'){element.dir=dir;}});}
function addDirObserver(){if(dirObserver){return;}
dirObserver=new MutationObserver(onChanged);dirObserver.observe(document.documentElement,{attributeFilter:['dir'],attributes:true});function onChanged(mutations){document.dispatchEvent(new Event('dirchanged'));}}
function mixin(target,source){for(var key in source){target[key]=source[key];}
return target;}});})(typeof define=='function'&&define.amd?define:(function(n,w){'use strict';return typeof module=='object'?function(c){c(require,exports,module);}:function(c){var m={exports:{}};c(function(n){return w[n];},m.exports,m);w[n]=m.exports;};})('gaia-component',this));},{}],3:[function(require,module,exports){(function(define){'use strict';define(function(require,exports,module){var base=window.GAIA_ICONS_BASE_URL||window.COMPONENTS_BASE_URL||'bower_components/';if(!document.documentElement){window.addEventListener('load',load);}else{load();}
function load(){if(isLoaded()){return;}
var link=document.createElement('link');link.rel='stylesheet';link.type='text/css';link.href=base+'gaia-icons/gaia-icons.css';document.head.appendChild(link);exports.loaded=true;}
function isLoaded(){return exports.loaded||document.querySelector('link[href*=gaia-icons]')||document.documentElement.classList.contains('gaia-icons-loaded');}});})(typeof define=='function'&&define.amd?define:(function(n,w){'use strict';return typeof module=='object'?function(c){c(require,exports,module);}:function(c){var m={exports:{}};c(function(n){return w[n];},m.exports,m);w[n]=m.exports;};})('gaia-icons',this));},{}],4:[function(require,module,exports){;(function(define){'use strict';define(function(require,exports,module){var component=require('gaia-component');var fontFit=require('font-fit');require('gaia-icons');var debug=0?console.log.bind(console):function(){};const KNOWN_ACTIONS={menu:'menu',back:'back',close:'close'};const TITLE_FONT='italic 300 24px FiraSans';const TITLE_PADDING=10;const MINIMUM_FONT_SIZE_CENTERED=20;const MINIMUM_FONT_SIZE_UNCENTERED=16;const MAXIMUM_FONT_SIZE=23;module.exports=component.register('gaia-header',{extensible:false,dirObserver:true,created:function(){debug('created');this.setupShadowRoot();this.els={actionButton:this.shadowRoot.querySelector('.action-button'),titles:this.getElementsByTagName('h1')};this.els.actionButton.addEventListener('click',e=>this.onActionButtonClick(e));this.observer=new MutationObserver(this.onMutation.bind(this));this.ignoreDir=this.hasAttribute('ignore-dir');this.titleEnd=this.getAttribute('title-end');this.titleStart=this.getAttribute('title-start');this.noFontFit=this.getAttribute('no-font-fit');this.notFlush=this.hasAttribute('not-flush');this.action=this.getAttribute('action');this.unresolved={};this.pending={};this._resizeThrottlingId=null;this.onResize=this.onResize.bind(this);},attached:function(){debug('attached');this.runFontFitSoon();this.observerStart();window.addEventListener('resize',this.onResize);},detached:function(){debug('detached');window.removeEventListener('resize',this.onResize);this.observerStop();this.clearPending();},clearPending:function(){for(var key in this.pending){this.pending[key].clear();delete this.pending[key];}
window.cancelAnimationFrame(this._resizeThrottlingId);this._resizeThrottlingId=null;},runFontFit:function(){debug('run font-fit');if(this.noFontFit){return Promise.resolve();}
var titles=this.els.titles;var space=this.getTitleSpace();var styles=[].map.call(titles,el=>this.getTitleStyle(el,space));return this.setTitleStylesSoon(styles);},runFontFitSoon:function(){debug('run font-fit soon');if(this.pending.runFontFitSoon){return;}
this.pending.runFontFitSoon=this.nextTick(()=>{delete this.pending.runFontFitSoon;this.runFontFit();});},getTitleStyle:function(el,space){debug('get el style',el,space);var text=el.textContent;var styleId=space.start+text+space.end+'#'+space.value;if(!text||!text.trim()){return debug('exit: no text');}
if(getStyleId(el)===styleId){return debug('exit: no change');}
var marginStart=this.getTitleMarginStart();var textSpace=space.value-Math.abs(marginStart);var fontFitResult=this.fontFit(text,textSpace,{min:MINIMUM_FONT_SIZE_CENTERED});var overflowing=fontFitResult.overflowing;var padding={start:0,end:0};if(overflowing){debug('title overflowing');padding.start=!space.start?TITLE_PADDING:0;padding.end=!space.end?TITLE_PADDING:0;textSpace=space.value-padding.start-padding.end;fontFitResult=this.fontFit(text,textSpace);marginStart=0;}
return{id:styleId,fontSize:fontFitResult.fontSize,marginStart:marginStart,overflowing:overflowing,padding:padding};},setTitleStylesSoon:function(styles){debug('set title styles soon',styles);var key='setStyleTitlesSoon';this._titleStyles=styles;if(this.unresolved[key]){return this.unresolved[key];}
this.unresolved[key]=new Promise((resolve)=>{this.pending[key]=this.nextTick(()=>{var styles=this._titleStyles;var els=this.els.titles;[].forEach.call(els,(el,i)=>{if(!styles[i]){return debug('exit');}
this.setTitleStyle(el,styles[i]);});delete this._titleStyles;delete this.unresolved[key];delete this.pending[key];resolve();});});},setTitleStyle:function(el,style){debug('set title style',style);this.observerStop();if(this.ignoreDir){el.style.marginLeft=style.marginStart+'px';el.style.paddingLeft=style.padding.start+'px';el.style.paddingRight=style.padding.end+'px';}else{el.style.marginInlineStart=style.marginStart+'px';el.style.paddingInlineStart=style.padding.start+'px';el.style.paddingInlineEnd=style.padding.end+'px';}
el.style.fontSize=style.fontSize+'px';setStyleId(el,style.id);this.observerStart();},fontFit:function(text,space,opts={}){debug('font fit:',text,space,opts);var fontFitArgs={font:TITLE_FONT,min:opts.min||MINIMUM_FONT_SIZE_UNCENTERED,max:MAXIMUM_FONT_SIZE,text:text,space:space};return fontFit(fontFitArgs);},observerStart:function(){if(this.observing){return;}
this.observer.observe(this,{childList:true,attributes:true,subtree:true});this.observing=true;debug('observer started');},observerStop:function(){if(!this.observing){return;}
this.observer.disconnect();this.observing=false;debug('observer stopped');},onResize:function(e){debug('onResize',this._resizeThrottlingId);if(this._resizeThrottlingId!==null){return;}
this._resizeThrottlingId=window.requestAnimationFrame(()=>{this._resizeThrottlingId=null;this.runFontFitSoon();});},onMutation:function(mutations){debug('on mutation',mutations);if(!this.pending.runFontFitSoon){this.runFontFit();}},getTitleSpace:function(){var start=this.titleStart;var end=this.titleEnd;var space=this.getWidth()-start-end;var result={value:space,start:start,end:end};debug('get title space',result);return result;},getWidth:function(){var value=this.notFlush?this.clientWidth:window.innerWidth;debug('get width',value);return value;},triggerAction:function(){if(this.action){this.els.actionButton.click();}},onActionButtonClick:function(){debug('action button click');var config={detail:{type:this.action}};var e=new CustomEvent('action',config);setTimeout(()=>this.dispatchEvent(e));},getTitleMarginStart:function(){var start=this.titleStart;var end=this.titleEnd;var marginStart=end-start;debug('get title margin start',marginStart);return marginStart;},getButtonsBeforeTitle:function(){var children=this.children;var l=children.length;var els=[];for(var i=0;i<l;i++){var el=children[i];if(el.tagName==='H1'){break;}
if(!contributesToLayout(el)){continue;}
els.push(el);}
if(this.action){els.push(this.els.actionButton);}
return els;},getButtonsAfterTitle:function(){var children=this.children;var els=[];for(var i=children.length-1;i>=0;i--){var el=children[i];if(el.tagName==='H1'){break;}
if(!contributesToLayout(el)){continue;}
els.push(el);}
return els;},sumButtonWidths:function(buttons){var defaultWidth=50;var sum=buttons.reduce((prev,button)=>{var isStandardButton=button===this.els.actionButton;var width=isStandardButton?defaultWidth:button.clientWidth;return prev+width;},0);debug('sum button widths',buttons,sum);return sum;},attrs:{action:{get:function(){return this._action;},set:function(value){var action=KNOWN_ACTIONS[value];if(action===this._action){return;}
this.setAttr('action',action);this._action=action;}},titleStart:{get:function(){debug('get title-start');if('_titleStart'in this){return this._titleStart;}
var buttons=this.getButtonsBeforeTitle();var value=this.sumButtonWidths(buttons);debug('get title-start',buttons,value);return value;},set:function(value){debug('set title-start',value);value=parseInt(value,10);if(value===this._titleStart||isNaN(value)){return;}
this.setAttr('title-start',value);this._titleStart=value;debug('set');}},titleEnd:{get:function(){debug('get title-end');if('_titleEnd'in this){return this._titleEnd;}
var buttons=this.getButtonsAfterTitle();return this.sumButtonWidths(buttons);},set:function(value){debug('set title-end',value);value=parseInt(value,10);if(value===this._titleEnd||isNaN(value)){return;}
this.setAttr('title-end',value);this._titleEnd=value;}},noFontFit:{get:function(){return this._noFontFit||false;},set:function(value){debug('set no-font-fit',value);value=!!(value||value==='');if(value===this.noFontFit){return;}
this._noFontFit=value;if(value){this.setAttr('no-font-fit','');}
else{this.removeAttr('no-font-fit');}}},ignoreDir:{get:function(){return this._ignoreDir||false;},set:function(value){debug('set ignore-dir',value);value=!!(value||value==='');if(value===this.ignoreDir){return;}
this._ignoreDir=value;this.dirObserver=!value;if(value){this.setAttr('ignore-dir','');}
else{this.removeAttr('ignore-dir');}}}},template:`<div class="inner">
    <button class="action-button">
      <content select="[l10n-action]"></content>
    </button>
    <content></content>
  </div>

  <style>

  :host {
    display: block;
    -moz-user-select: none;

    --gaia-header-button-color:
      var(--header-button-color,
      var(--header-color,
      var(--link-color,
      inherit)));
  }

  /**
   * [hidden]
   */

  :host[hidden] {
    display: none;
  }

  /** Reset
   ---------------------------------------------------------*/

  ::-moz-focus-inner { border: 0; }

  /** Inner
   ---------------------------------------------------------*/

  .inner {
    display: flex;
    min-height: 50px;
    -moz-user-select: none;

    background:
      var(--header-background,
      var(--background,
      #fff));
  }

  /** Action Button
   ---------------------------------------------------------*/

  /**
   * 1. Hidden by default
   */

  .action-button {
    position: relative;

    display: none; /* 1 */
    width: 50px;
    font-size: 30px;
    margin: 0;
    padding: 0;
    border: 0;
    outline: 0;

    align-items: center;
    background: none;
    cursor: pointer;
    transition: opacity 200ms 280ms;
    color:
      var(--header-action-button-color,
      var(--header-icon-color,
      var(--gaia-header-button-color)));
  }

  /**
   * [action=back]
   * [action=menu]
   * [action=close]
   *
   * 1. For icon vertical-alignment
   */

  [action=back] .action-button,
  [action=menu] .action-button,
  [action=close] .action-button {
    display: flex; /* 1 */
  }

  /**
   * :active
   */

  .action-button:active {
    transition: none;
    opacity: 0.2;
  }

  /** Action Button Icon
   ---------------------------------------------------------*/

  .action-button:before {
    font-family: 'gaia-icons';
    font-style: normal;
    text-rendering: optimizeLegibility;
    font-weight: 500;
  }

  [action=close] .action-button:before { content: 'close' }
  [action=menu] .action-button:before { content: 'menu' }

  [action=back]:-moz-dir(ltr) .action-button:before { content: 'left' }
  [action=back]:-moz-dir(rtl) .action-button:before { content: 'right' }

  /** Action Button Icon
   ---------------------------------------------------------*/

  /**
   * 1. To enable vertical alignment.
   */

  .action-button:before {
    display: block;
  }

  /** Action Button Text
   ---------------------------------------------------------*/

  /**
   * To provide custom localized content for
   * the action-button, we allow the user
   * to provide an element with the class
   * .l10n-action. This node is then
   * pulled inside the real action-button.
   *
   * Example:
   *
   *   <gaia-header action="back">
   *     <span l10n-action aria-label="Back">Localized text</span>
   *     <h1>title</h1>
   *   </gaia-header>
   */

  ::content [l10n-action] {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    font-size: 0;
  }

  /** Title
   ---------------------------------------------------------*/

  /**
   * 1. Vertically center text. We can't use flexbox
   *    here as it breaks text-overflow ellipsis
   *    without an inner div.
   */

  ::content h1 {
    flex: 1;
    margin: 0;
    padding: 0;
    overflow: hidden;

    white-space: nowrap;
    text-overflow: ellipsis;
    text-align: center;
    line-height: 50px; /* 1 */
    font-weight: 300;
    font-style: italic;
    font-size: 24px;

    color:
      var(--header-title-color,
      var(--header-color,
      var(--title-color,
      var(--text-color,
      inherit))));
  }

  /**
   * [ignore-dir]
   *
   * When the <gaia-header> component has an [ignore-dir] attribute, header
   * direction is forced to LTR but we still want the <h1> text to be reversed
   * so that strings like '1 selected' become 'selected 1'.
   *
   * When we're happy for <gaia-header> to be fully RTL responsive we won't need
   * these rules anymore, but this depends on all Gaia apps being ready.
   *
   * This should be safe to remove when bug 1179459 lands.
   */

  :host[ignore-dir] {
    direction: ltr;
  }

  :host[ignore-dir]:-moz-dir(rtl) h1 {
    direction: rtl;
  }

  /** Buttons
   ---------------------------------------------------------*/

  ::content a,
  ::content button {
    position: relative;
    z-index: 1;
    box-sizing: border-box;
    display: flex;
    width: auto;
    height: auto;
    min-width: 50px;
    margin: 0;
    padding: 0 10px;
    outline: 0;
    border: 0;

    font-size: 14px;
    line-height: 1;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    text-align: center;
    background: none;
    border-radius: 0;
    font-style: italic;
    cursor: pointer;
    transition: opacity 200ms 280ms;
    color: var(--gaia-header-button-color);
  }

  /**
   * :active
   */

  ::content a:active,
  ::content button:active {
    transition: none;
    opacity: 0.2;
  }

  /**
   * [hidden]
   */

  ::content a[hidden],
  ::content button[hidden] {
    display: none;
  }

  /**
   * [disabled]
   */

  ::content a[disabled],
  ::content button[disabled] {
    pointer-events: none;
    color: var(--header-disabled-button-color);
  }

  /** Icon Buttons
   ---------------------------------------------------------*/

  /**
   * Icons are a different color to text
   */

  ::content .icon,
  ::content [data-icon] {
    color:
      var(--header-icon-color,
      var(--gaia-header-button-color));
  }

  /**
   * If users want their action button
   * to be in the component's light-dom
   * they can add an .action class
   * to make it look like the
   * shadow action button.
   */

  ::content .action {
    color:
      var(--header-action-button-color,
      var(--header-icon-color,
      var(--gaia-header-button-color)));
  }

  /**
   * [data-icon]:empty
   *
   * Icon buttons with no textContent,
   * should always be 50px.
   *
   * This is to prevent buttons being
   * larger than they should be before
   * icon-font has loaded.
   */

  ::content [data-icon]:empty {
    width: 50px;
  }

  </style>`,nextTick:nextTick});function contributesToLayout(el){return el.localName!=='style'&&!el.hasAttribute('l10n-action');}
function setStyleId(el,id){el._styleId=id;}
function getStyleId(el){return el._styleId;}
function nextTick(fn){var cleared;Promise.resolve().then(()=>{if(!cleared){fn();}});return{clear:function(){cleared=true;}};}});})(typeof define=='function'&&define.amd?define:(function(n,w){'use strict';return typeof module=='object'?function(c){c(require,exports,module);}:function(c){var m={exports:{}};c(function(n){return w[n];},m.exports,m);w[n]=m.exports;};})('gaia-header',this));},{"font-fit":1,"gaia-component":2,"gaia-icons":3}]},{},[4])(4)});;'use strict';var Wallpaper={thumbnailScale:3/8,wallpapersUrl:'/resources/list.json',init:function wallpaper_init(){var self=this;if(navigator.mozSetMessageHandler){navigator.mozSetMessageHandler('activity',function handler(request){var activityName=request.source.name;if(activityName!=='pick'){return;}
self.startPick(request);});}
this.header=document.getElementById('header');this.wallpapers=document.getElementById('wallpapers');this.generateWallpaperList();},generateWallpaperList:function wallpaper_generateWallpaperList(cb){var self=this;var sampleSize=Downsample.sizeNoMoreThan(this.thumbnailScale);LazyLoader.getJSON(this.wallpapersUrl).then(function(json){self.wallpapers.innerHTML='';json.forEach(function(wallpaper){var fileName='resources/'+wallpaper;var imgNode=document.createElement('img');imgNode.alt='';imgNode.classList.add('wallpaper');imgNode.dataset.filename=fileName;imgNode.src=fileName+sampleSize;self.wallpapers.appendChild(imgNode);});if(cb){cb();}});},startPick:function wallpaper_startPick(request){this.pickActivity=request;this.wallpapers.addEventListener('click',this.pickWallpaper.bind(this));this.header.addEventListener('action',this.cancelPick.bind(this));},pickWallpaper:function wallpaper_pickWallpaper(e){var src=e.target.dataset.filename;if(src===''){return;}
if(!this.pickActivity){return;}
var img=new Image();img.src=src;var self=this;img.onload=function(){var canvas=document.createElement('canvas');var context=canvas.getContext('2d');canvas.width=img.width;canvas.height=img.height;context.drawImage(img,0,0);canvas.toBlob(function(blob){self.pickActivity.postResult({type:'image/jpeg',blob:blob,name:src},'image/jpeg');self.endPick();},'image/jpeg');};},cancelPick:function wallpaper_cancelPick(){this.pickActivity.postError('cancelled');this.endPick();},endPick:function wallpaper_endPick(){this.pickActivity=null;this.header.removeEventListener('action',this.cancelPick);this.wallpapers.removeEventListener('click',this.pickWallpaper);}};window.addEventListener('load',function pick(){window.removeEventListener('load',pick);Wallpaper.init();});