diff --git a/wp-admin/css/themes-rtl.css b/wp-admin/css/themes-rtl.css
index b620298282..bfb63a99ad 100644
--- a/wp-admin/css/themes-rtl.css
+++ b/wp-admin/css/themes-rtl.css
@@ -1182,6 +1182,8 @@ div#custom-background-image img {
 
 body.full-overlay-active {
 	overflow: hidden;
+	/* Hide all the content, the Customizer overlay is then made visible to be the only available content. */
+	visibility: hidden;
 }
 
 .wp-full-overlay {
@@ -1613,8 +1615,10 @@ body.full-overlay-active {
 	height: 100%;
 }
 
-.customize-active #customize-container {
-	display: block;
+/* Make the Customizer and Theme installer overlays the only available content. */
+#customize-container,
+.theme-install-overlay {
+	visibility: visible;
 }
 
 .customize-loading #customize-container iframe {
diff --git a/wp-admin/css/themes-rtl.min.css b/wp-admin/css/themes-rtl.min.css
index cdd6a8d4b6..830593eacb 100644
--- a/wp-admin/css/themes-rtl.min.css
+++ b/wp-admin/css/themes-rtl.min.css
@@ -1 +1 @@
-.theme-browser .themes{clear:both}.themes-php:not(.network-admin) .wrap h1{margin-bottom:15px}.themes-php .wrap h1 .button{margin-right:20px}.themes-php .wp-filter-search{position:relative;top:-2px;right:20px;margin:0;width:280px;font-size:16px;font-weight:300;line-height:1.5}.theme .notice,.theme .notice.is-dismissible{right:0;margin:0;position:absolute;left:0;top:0}.theme-browser .theme{cursor:pointer;float:right;margin:0 0 4% 4%;position:relative;width:30.6%;border:1px solid #ddd;-webkit-box-shadow:0 1px 1px -1px rgba(0,0,0,.1);box-shadow:0 1px 1px -1px rgba(0,0,0,.1);-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box}.ie8 .theme-browser .theme{width:30%;margin:0 0 4% 3%}.theme-browser .theme:nth-child(3n){margin-left:0}.theme-browser .theme:focus,.theme-browser .theme:hover{cursor:pointer}.theme-browser .theme .theme-name{font-size:15px;font-weight:600;height:18px;margin:0;padding:15px;-webkit-box-shadow:inset 0 1px 0 rgba(0,0,0,.1);box-shadow:inset 0 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\ No newline at end of file
diff --git a/wp-admin/css/themes.css b/wp-admin/css/themes.css
index ab67ad0646..bfc7579abf 100644
--- a/wp-admin/css/themes.css
+++ b/wp-admin/css/themes.css
@@ -1182,6 +1182,8 @@ div#custom-background-image img {
 
 body.full-overlay-active {
 	overflow: hidden;
+	/* Hide all the content, the Customizer overlay is then made visible to be the only available content. */
+	visibility: hidden;
 }
 
 .wp-full-overlay {
@@ -1613,8 +1615,10 @@ body.full-overlay-active {
 	height: 100%;
 }
 
-.customize-active #customize-container {
-	display: block;
+/* Make the Customizer and Theme installer overlays the only available content. */
+#customize-container,
+.theme-install-overlay {
+	visibility: visible;
 }
 
 .customize-loading #customize-container iframe {
diff --git a/wp-admin/css/themes.min.css b/wp-admin/css/themes.min.css
index 0dc2017ae3..f47afb5267 100644
--- a/wp-admin/css/themes.min.css
+++ b/wp-admin/css/themes.min.css
@@ -1 +1 @@
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.wp-full-overlay-sidebar{background:#eee;border-right:1px solid #ddd}.theme-install-overlay .wp-full-overlay-sidebar-content{background:#fff;border-top:1px solid #ddd;border-bottom:1px solid #ddd}.theme-install-overlay .wp-full-overlay-main{position:absolute;z-index:0;background-color:#f1f1f1}.customize-loading #customize-container{background-color:#f1f1f1}#customize-preview.wp-full-overlay-main:before,.customize-loading #customize-container:before,.theme-install-overlay .wp-full-overlay-main:before{content:"";display:block;width:20px;height:20px;position:absolute;left:50%;top:50%;z-index:-1;margin:-10px 0 0 -10px;-webkit-transform:translateZ(0);transform:translateZ(0);background:url(../images/spinner.gif) center center no-repeat;-webkit-background-size:20px 20px;background-size:20px 20px}#customize-preview.wp-full-overlay-main.iframe-ready:before,.theme-install-overlay.iframe-ready .wp-full-overlay-main:before{background-image:none}@media 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\ No newline at end of file
diff --git a/wp-admin/js/customize-controls.js b/wp-admin/js/customize-controls.js
index 631df0b57c..7078cfd059 100644
--- a/wp-admin/js/customize-controls.js
+++ b/wp-admin/js/customize-controls.js
@@ -3620,7 +3620,7 @@
 			return;
 		}
 
-		var parent, topFocus,
+		var parent,
 			body = $( document.body ),
 			overlay = body.children( '.wp-full-overlay' ),
 			title = $( '#customize-info .panel-title.site-title' ),
@@ -4234,14 +4234,6 @@
 		});
 
 		api.trigger( 'ready' );
-
-		// Make sure left column gets focus
-		topFocus = closeBtn;
-		topFocus.focus();
-		setTimeout(function () {
-			topFocus.focus();
-		}, 200);
-
 	});
 
 })( wp, jQuery );
diff --git a/wp-admin/js/customize-controls.min.js b/wp-admin/js/customize-controls.min.js
index e52c61b80b..a537680be8 100644
--- a/wp-admin/js/customize-controls.min.js
+++ b/wp-admin/js/customize-controls.min.js
@@ -1,2 +1,2 @@
 !function(a,b){var c,d,e=wp.customize;e.Setting=e.Value.extend({initialize:function(a,b,c){e.Value.prototype.initialize.call(this,b,c),this.id=a,this.transport=this.transport||"refresh",this._dirty=c.dirty||!1,this.notifications=new e.Values({defaultConstructor:e.Notification}),this.bind(this.preview)},preview:function(){switch(this.transport){case"refresh":return this.previewer.refresh();case"postMessage":return this.previewer.send("setting",[this.id,this()])}},findControls:function(){var a=this,b=[];return e.control.each(function(c){_.each(c.settings,function(d){d.id===a.id&&b.push(c)})}),b}}),e.utils={},e.utils.bubbleChildValueChanges=function(a,c){b.each(c,function(b,c){a[c].bind(function(b,c){a.parent&&b!==c&&a.parent.trigger("change",a)})})},d=function(a){var b,c,d,f;b=this,a=a||{},d=function(){var a;a=b.extended(e.Panel)&&b.expanded&&b.expanded()?b.container.find("ul.control-panel-content"):b.extended(e.Section)&&b.expanded&&b.expanded()?b.container.find("ul.accordion-section-content"):b.container,f=a.find(".control-focus:first"),0===f.length&&(f=a.find("input, select, textarea, button, object, a[href], [tabindex]").filter(":visible").first()),f.focus()},a.completeCallback?(c=a.completeCallback,a.completeCallback=function(){d(),c()}):a.completeCallback=d,e.state("paneVisible").set(!0),b.expand?b.expand(a):a.completeCallback()},e.utils.prioritySort=function(a,b){return a.priority()===b.priority()&&"number"==typeof a.params.instanceNumber&&"number"==typeof b.params.instanceNumber?a.params.instanceNumber-b.params.instanceNumber:a.priority()-b.priority()},e.utils.isKeydownButNotEnterEvent=function(a){return"keydown"===a.type&&13!==a.which},e.utils.areElementListsEqual=function(a,c){var d=a.length===c.length&&-1===_.indexOf(_.map(_.zip(a,c),function(a){return b(a[0]).is(a[1])}),!1);return d},c=e.Class.extend({defaultActiveArguments:{duration:"fast",completeCallback:b.noop},defaultExpandedArguments:{duration:"fast",completeCallback:b.noop},containerType:"container",defaults:{title:"",description:"",priority:100,type:"default",content:null,active:!0,instanceNumber:null},initialize:function(a,c){var d=this;d.id=a,c=c||{},c.params=_.defaults(c.params||{},d.defaults),b.extend(d,c),d.templateSelector="customize-"+d.containerType+"-"+d.params.type,d.container=b(d.params.content),0===d.container.length&&(d.container=b(d.getContainer())),d.deferred={embedded:new b.Deferred},d.priority=new e.Value,d.active=new e.Value,d.activeArgumentsQueue=[],d.expanded=new e.Value,d.expandedArgumentsQueue=[],d.active.bind(function(a){var c=d.activeArgumentsQueue.shift();c=b.extend({},d.defaultActiveArguments,c),a=a&&d.isContextuallyActive(),d.onChangeActive(a,c)}),d.expanded.bind(function(a){var c=d.expandedArgumentsQueue.shift();c=b.extend({},d.defaultExpandedArguments,c),d.onChangeExpanded(a,c)}),d.deferred.embedded.done(function(){d.attachEvents()}),e.utils.bubbleChildValueChanges(d,["priority","active"]),d.priority.set(d.params.priority),d.active.set(d.params.active),d.expanded.set(!1)},ready:function(){},_children:function(a,b){var c=this,d=[];return e[b].each(function(b){b[a].get()===c.id&&d.push(b)}),d.sort(e.utils.prioritySort),d},isContextuallyActive:function(){throw new Error("Container.isContextuallyActive() must be overridden in a subclass.")},onChangeActive:function(a,c){var d,f,g=this;return c.unchanged?void(c.completeCallback&&c.completeCallback()):(d="resolved"===e.previewer.deferred.active.state()?c.duration:0,g.extended(e.Panel)&&(e.panel.each(function(a){a!==g&&a.expanded()&&(f=a,d=0)}),a||_.each(g.sections(),function(a){a.collapse({duration:0})})),b.contains(document,g.container[0])?a?g.container.stop(!0,!0).slideDown(d,c.completeCallback):g.expanded()?g.collapse({duration:d,completeCallback:function(){g.container.stop(!0,!0).slideUp(d,c.completeCallback)}}):g.container.stop(!0,!0).slideUp(d,c.completeCallback):(g.container.toggle(a),c.completeCallback&&c.completeCallback()),void(f&&f._recalculateTopMargin()))},_toggleActive:function(a,b){var c=this;return b=b||{},a&&this.active.get()||!a&&!this.active.get()?(b.unchanged=!0,c.onChangeActive(c.active.get(),b),!1):(b.unchanged=!1,this.activeArgumentsQueue.push(b),this.active.set(a),!0)},activate:function(a){return this._toggleActive(!0,a)},deactivate:function(a){return this._toggleActive(!1,a)},onChangeExpanded:function(){throw new Error("Must override with subclass.")},_toggleExpanded:function(a,b){var c,d=this;return b=b||{},c=b.completeCallback,a&&!d.active()?!1:(e.state("paneVisible").set(!0),b.completeCallback=function(){c&&c.apply(d,arguments),a?d.container.trigger("expanded"):d.container.trigger("collapsed")},a&&d.expanded.get()||!a&&!d.expanded.get()?(b.unchanged=!0,d.onChangeExpanded(d.expanded.get(),b),!1):(b.unchanged=!1,d.expandedArgumentsQueue.push(b),d.expanded.set(a),!0))},expand:function(a){return this._toggleExpanded(!0,a)},collapse:function(a){return this._toggleExpanded(!1,a)},focus:d,getContainer:function(){var a,c=this;return a=0!==b("#tmpl-"+c.templateSelector).length?wp.template(c.templateSelector):wp.template("customize-"+c.containerType+"-default"),a&&c.container?b.trim(a(c.params)):"<li></li>"}}),e.Section=c.extend({containerType:"section",defaults:{title:"",description:"",priority:100,type:"default",content:null,active:!0,instanceNumber:null,panel:null,customizeAction:""},initialize:function(a,d){var f=this;c.prototype.initialize.call(f,a,d),f.id=a,f.panel=new e.Value,f.panel.bind(function(a){b(f.container).toggleClass("control-subsection",!!a)}),f.panel.set(f.params.panel||""),e.utils.bubbleChildValueChanges(f,["panel"]),f.embed(),f.deferred.embedded.done(function(){f.ready()})},embed:function(){var a,c=this;a=function(a){var d;a?e.panel(a,function(a){a.deferred.embedded.done(function(){d=a.container.find("ul:first"),c.container.parent().is(d)||d.append(c.container),c.deferred.embedded.resolve()})}):(d=b("#customize-theme-controls").children("ul"),c.container.parent().is(d)||d.append(c.container),c.deferred.embedded.resolve())},c.panel.bind(a),a(c.panel.get()),c.deferred.embedded.done(function(){e.bind("pane-contents-reflowed",_.debounce(function(){c._recalculateTopMargin()},100))})},attachEvents:function(){var a=this;a.container.find(".accordion-section-title, .customize-section-back").on("click keydown",function(b){e.utils.isKeydownButNotEnterEvent(b)||(b.preventDefault(),a.expanded()?a.collapse():a.expand())})},isContextuallyActive:function(){var a=this,b=a.controls(),c=0;return _(b).each(function(a){a.active()&&(c+=1)}),0!==c},controls:function(){return this._children("section","control")},onChangeExpanded:function(a,c){var d,f,g,h,i=this,j=i.container.closest(".wp-full-overlay-sidebar-content"),k=i.container.find(".accordion-section-content"),l=i.container.closest(".wp-full-overlay"),m=i.container.find(".customize-section-back"),n=i.container.find(".accordion-section-title").first(),o=b("#customize-header-actions").height();a&&!i.container.hasClass("open")?(c.unchanged?f=c.completeCallback:(j.scrollTop(0),d=function(){var a,b;a=window.matchMedia||window.msMatchMedia,b=90,a&&a("(max-width: 640px)").matches&&(b=45),k.css("height",window.innerHeight-b)},f=function(){i.container.addClass("open"),l.addClass("section-open"),g=k.offset().top,h=j.scrollTop(),k.css("margin-top",o-g-h),d(),n.attr("tabindex","-1"),m.attr("tabindex","0"),m.focus(),c.completeCallback&&c.completeCallback(),b(window).on("resize.customizer-section",_.debounce(d,100)),setTimeout(_.bind(i._recalculateTopMargin,i),0)}),c.allowMultiple||e.section.each(function(a){a!==i&&a.collapse({duration:c.duration})}),i.panel()?e.panel(i.panel()).expand({duration:c.duration,completeCallback:f}):(e.panel.each(function(a){a.collapse()}),f())):!a&&i.container.hasClass("open")?(i.container.removeClass("open"),l.removeClass("section-open"),k.css("margin-top",""),j.scrollTop(0),m.attr("tabindex","-1"),n.attr("tabindex","0"),n.focus(),c.completeCallback&&c.completeCallback(),b(window).off("resize.customizer-section")):c.completeCallback&&c.completeCallback()},_recalculateTopMargin:function(){var a,c,d,e=this;a=e.container.find(".accordion-section-content"),0!==a.length&&(d=b("#customize-header-actions").height(),c=a.offset().top-d,c>0&&a.css("margin-top",parseInt(a.css("margin-top"),10)-c))}}),e.ThemesSection=e.Section.extend({currentTheme:"",overlay:"",template:"",screenshotQueue:null,$window:b(window),initialize:function(){return this.$customizeSidebar=b(".wp-full-overlay-sidebar-content:first"),e.Section.prototype.initialize.apply(this,arguments)},ready:function(){var a=this;a.overlay=a.container.find(".theme-overlay"),a.template=wp.template("customize-themes-details-view"),b("body").on("keyup",function(b){a.overlay.find(".theme-wrap").is(":visible")&&(39===b.keyCode&&a.nextTheme(),37===b.keyCode&&a.previousTheme(),27===b.keyCode&&a.closeDetails())}),_.bindAll(this,"renderScreenshots")},isContextuallyActive:function(){return this.active()},attachEvents:function(){var a=this;a.container.find(".change-theme, .customize-theme").on("click keydown",function(b){e.utils.isKeydownButNotEnterEvent(b)||(b.preventDefault(),a.expanded()?a.collapse():a.expand())}),a.container.on("click keydown",".left",function(b){e.utils.isKeydownButNotEnterEvent(b)||(b.preventDefault(),a.previousTheme())}),a.container.on("click keydown",".right",function(b){e.utils.isKeydownButNotEnterEvent(b)||(b.preventDefault(),a.nextTheme())}),a.container.on("click keydown",".theme-backdrop, .close",function(b){e.utils.isKeydownButNotEnterEvent(b)||(b.preventDefault(),a.closeDetails())});var b=_.throttle(_.bind(a.renderScreenshots,this),100);a.container.on("input","#themes-filter",function(c){var d,e=c.currentTarget.value.toLowerCase().trim().replace("-"," "),f=a.controls();_.each(f,function(a){a.filter(e)}),b(),d=a.container.find("li.customize-control:visible").length,a.container.find(".theme-count").text(d)}),e.bind("ready",function(){_.each(a.controls().slice(0,3),function(a){var b,c=a.params.theme.screenshot[0];c&&(b=new Image,b.src=c)})})},onChangeExpanded:function(a,c){if(c.unchanged)return void(c.completeCallback&&c.completeCallback());var d,f,g=this,h=g.container.closest(".accordion-section"),i=h.closest(".wp-full-overlay"),j=h.closest(".wp-full-overlay-sidebar-content"),k=j.find(".open"),l=h.find(".customize-theme"),m=h.find(".change-theme"),n=h.find(".control-panel-content");a?(e.section.each(function(a){a!==g&&a.collapse({duration:c.duration})}),e.panel.each(function(a){a.collapse({duration:0})}),n.show(0,function(){d=n.offset().top,f=j.scrollTop(),n.css("margin-top",b("#customize-header-actions").height()-d-f),h.addClass("current-panel"),i.addClass("in-themes-panel"),j.scrollTop(0),_.delay(g.renderScreenshots,10),g.$customizeSidebar.on("scroll.customize-themes-section",_.throttle(g.renderScreenshots,300)),c.completeCallback&&c.completeCallback()}),l.focus()):(k.removeClass("open"),h.removeClass("current-panel"),i.removeClass("in-themes-panel"),g.$customizeSidebar.off("scroll.customize-themes-section"),n.delay(180).hide(0,function(){n.css("margin-top","inherit"),c.completeCallback&&c.completeCallback()}),l.attr("tabindex","0"),m.focus(),j.scrollTop(0))},_recalculateTopMargin:function(){e.Panel.prototype._recalculateTopMargin.call(this)},renderScreenshots:function(){var a=this;null===a.screenshotQueue&&(a.screenshotQueue=a.controls()),a.screenshotQueue.length&&(a.screenshotQueue=_.filter(a.screenshotQueue,function(b){var c=b.container.find(".theme-screenshot"),d=c.find("img");if(!d.length)return!1;if(d.is(":hidden"))return!0;var e=a.$window.scrollTop(),f=e+a.$window.height(),g=d.offset().top,h=c.height(),i=g+h,j=3*h,k=i>=e-j&&f+j>=g;return k&&b.container.trigger("render-screenshot"),!k}))},nextTheme:function(){var a=this;a.getNextTheme()&&a.showDetails(a.getNextTheme(),function(){a.overlay.find(".right").focus()})},getNextTheme:function(){var a,b;return a=e.control("theme_"+this.currentTheme),b=a.container.next("li.customize-control-theme"),b.length?(b=b[0].id.replace("customize-control-",""),a=e.control(b),a.params.theme):!1},previousTheme:function(){var a=this;a.getPreviousTheme()&&a.showDetails(a.getPreviousTheme(),function(){a.overlay.find(".left").focus()})},getPreviousTheme:function(){var a,b;return a=e.control("theme_"+this.currentTheme),b=a.container.prev("li.customize-control-theme"),b.length?(b=b[0].id.replace("customize-control-",""),a=e.control(b),a.params.theme):!1},updateLimits:function(){this.getNextTheme()||this.overlay.find(".right").addClass("disabled"),this.getPreviousTheme()||this.overlay.find(".left").addClass("disabled")},showDetails:function(a,c){var d=this;c=c||function(){},d.currentTheme=a.id,d.overlay.html(d.template(a)).fadeIn("fast").focus(),b("body").addClass("modal-open"),d.containFocus(d.overlay),d.updateLimits(),c()},closeDetails:function(){b("body").removeClass("modal-open"),this.overlay.fadeOut("fast"),e.control("theme_"+this.currentTheme).focus()},containFocus:function(a){var c;a.on("keydown",function(d){return 9===d.keyCode?(c=b(":tabbable",a),c.last()[0]!==d.target||d.shiftKey?c.first()[0]===d.target&&d.shiftKey?(c.last().focus(),!1):void 0:(c.first().focus(),!1)):void 0})}}),e.Panel=c.extend({containerType:"panel",initialize:function(a,b){var d=this;c.prototype.initialize.call(d,a,b),d.embed(),d.deferred.embedded.done(function(){d.ready()})},embed:function(){var a=this,c=b("#customize-theme-controls > ul");a.container.parent().is(c)||(c.append(a.container),a.renderContent()),e.bind("pane-contents-reflowed",_.debounce(function(){a._recalculateTopMargin()},100)),a.deferred.embedded.resolve()},attachEvents:function(){var a,c=this;c.container.find(".accordion-section-title").on("click keydown",function(a){e.utils.isKeydownButNotEnterEvent(a)||(a.preventDefault(),c.expanded()||c.expand())}),c.container.find(".customize-panel-back").on("click keydown",function(a){e.utils.isKeydownButNotEnterEvent(a)||(a.preventDefault(),c.expanded()&&c.collapse())}),a=c.container.find(".panel-meta:first"),a.find("> .accordion-section-title .customize-help-toggle").on("click keydown",function(d){if(!e.utils.isKeydownButNotEnterEvent(d)&&(d.preventDefault(),a=c.container.find(".panel-meta"),!a.hasClass("cannot-expand"))){var f=a.find(".customize-panel-description:first");a.hasClass("open")?(a.toggleClass("open"),f.slideUp(c.defaultExpandedArguments.duration),b(this).attr("aria-expanded",!1)):(f.slideDown(c.defaultExpandedArguments.duration),a.toggleClass("open"),b(this).attr("aria-expanded",!0))}})},sections:function(){return this._children("panel","section")},isContextuallyActive:function(){var a=this,b=a.sections(),c=0;return _(b).each(function(a){a.active()&&a.isContextuallyActive()&&(c+=1)}),0!==c},onChangeExpanded:function(a,c){if(c.unchanged)return void(c.completeCallback&&c.completeCallback());var d,f,g=this,h=g.container.closest(".accordion-section"),i=h.closest(".wp-full-overlay"),j=h.closest(".wp-full-overlay-sidebar-content"),k=j.find(".open"),l=i.find("#customize-theme-controls > ul > .accordion-section > .accordion-section-title"),m=h.find(".customize-panel-back"),n=h.find(".accordion-section-title").first(),o=h.find(".control-panel-content"),p=b("#customize-header-actions").height();a?(e.section.each(function(a){g.id!==a.panel()&&a.collapse({duration:0})}),e.panel.each(function(a){g!==a&&a.collapse({duration:0})}),o.show(0,function(){o.parent().show(),d=o.offset().top,f=j.scrollTop(),o.css("margin-top",p-d-f),h.addClass("current-panel"),i.addClass("in-sub-panel"),j.scrollTop(0),c.completeCallback&&c.completeCallback()}),l.attr("tabindex","-1"),m.attr("tabindex","0"),m.focus(),g._recalculateTopMargin()):(k.removeClass("open"),h.removeClass("current-panel"),i.removeClass("in-sub-panel"),o.delay(180).hide(0,function(){o.css("margin-top","inherit"),c.completeCallback&&c.completeCallback()}),l.attr("tabindex","0"),m.attr("tabindex","-1"),n.focus(),j.scrollTop(0))},_recalculateTopMargin:function(){var a,c,d,e=this;a=b("#customize-header-actions").height(),d=e.container.closest(".accordion-section"),c=d.find(".control-panel-content"),c.css("margin-top",parseInt(c.css("margin-top"),10)-(c.offset().top-a))},renderContent:function(){var a,c=this;a=0!==b("#tmpl-"+c.templateSelector+"-content").length?wp.template(c.templateSelector+"-content"):wp.template("customize-panel-default-content"),a&&c.container&&c.container.find(".accordion-sub-container").html(a(c.params))}}),e.Control=e.Class.extend({defaultActiveArguments:{duration:"fast",completeCallback:b.noop},initialize:function(a,c){var d,f,g,h=this;h.params={},b.extend(h,c||{}),h.id=a,h.selector="#customize-control-"+a.replace(/\]/g,"").replace(/\[/g,"-"),h.templateSelector="customize-control-"+h.params.type+"-content",h.container=b(h.params.content?h.params.content:h.selector),h.deferred={embedded:new b.Deferred},h.section=new e.Value,h.priority=new e.Value,h.active=new e.Value,h.activeArgumentsQueue=[],h.notifications=new e.Values({defaultConstructor:e.Notification}),h.elements=[],d=h.container.find("[data-customize-setting-link]"),f={},d.each(function(){var a,c=b(this);if(c.is(":radio")){if(a=c.prop("name"),f[a])return;f[a]=!0,c=d.filter('[name="'+a+'"]')}e(c.data("customizeSettingLink"),function(a){var b=new e.Element(c);h.elements.push(b),b.sync(a),b.set(a())})}),h.active.bind(function(a){var c=h.activeArgumentsQueue.shift();c=b.extend({},h.defaultActiveArguments,c),h.onChangeActive(a,c)}),h.section.set(h.params.section),h.priority.set(isNaN(h.params.priority)?10:h.params.priority),h.active.set(h.params.active),e.utils.bubbleChildValueChanges(h,["section","priority","active"]),g=b.map(h.params.settings,function(a){return a}),0===g.length?(h.setting=null,h.settings={},h.embed()):e.apply(e,g.concat(function(){var a;h.settings={};for(a in h.params.settings)h.settings[a]=e(h.params.settings[a]);h.setting=h.settings["default"]||null,_.each(h.settings,function(a){a.notifications.bind("add",function(b){var c,d,f;d=a.id+":"+b.code,f=_.extend({},b,{setting:a.id}),c=new e.Notification(d,f),h.notifications.add(c.code,c)}),a.notifications.bind("remove",function(b){h.notifications.remove(a.id+":"+b.code)})}),h.embed()})),h.deferred.embedded.done(function(){var a=_.debounce(function(){h.renderNotifications()});h.notifications.bind("add",function(b){wp.a11y.speak(b.message,"assertive"),a()}),h.notifications.bind("remove",a),h.renderNotifications(),h.ready()})},embed:function(){var a,b=this;a=function(a){var c;a&&e.section(a,function(a){a.deferred.embedded.done(function(){c=a.container.find("ul:first"),b.container.parent().is(c)||(c.append(b.container),b.renderContent()),b.deferred.embedded.resolve()})})},b.section.bind(a),a(b.section.get())},ready:function(){},getNotificationsContainerElement:function(){var a,c,d=this;return c=d.container.find(".customize-control-notifications-container:first"),c.length?c:(c=b('<div class="customize-control-notifications-container"></div>'),d.container.hasClass("customize-control-nav_menu_item")?d.container.find(".menu-item-settings:first").prepend(c):d.container.hasClass("customize-control-widget_form")?d.container.find(".widget-inside:first").prepend(c):(a=d.container.find(".customize-control-title"),a.length?a.after(c):d.container.prepend(c)),c)},renderNotifications:function(){var a,c,d=this,e=!1;a=d.getNotificationsContainerElement(),a&&a.length&&(c=[],d.notifications.each(function(a){c.push(a),"error"===a.type&&(e=!0)}),0===c.length?a.stop().slideUp("fast"):a.stop().slideDown("fast",null,function(){b(this).css("height","auto")}),d.notificationsTemplate||(d.notificationsTemplate=wp.template("customize-control-notifications")),d.container.toggleClass("has-notifications",0!==c.length),d.container.toggleClass("has-error",e),a.empty().append(b.trim(d.notificationsTemplate({notifications:c,altNotice:Boolean(d.altNotice)}))))},expand:function(a){e.section(this.section()).expand(a)},focus:d,onChangeActive:function(a,c){return c.unchanged?void(c.completeCallback&&c.completeCallback()):void(b.contains(document,this.container[0])?a?this.container.slideDown(c.duration,c.completeCallback):this.container.slideUp(c.duration,c.completeCallback):(this.container.toggle(a),c.completeCallback&&c.completeCallback()))},toggle:function(a){return this.onChangeActive(a,this.defaultActiveArguments)},activate:c.prototype.activate,deactivate:c.prototype.deactivate,_toggleActive:c.prototype._toggleActive,dropdownInit:function(){var a=this,b=this.container.find(".dropdown-status"),c=this.params,d=!1,f=function(a){"string"==typeof a&&c.statuses&&c.statuses[a]?b.html(c.statuses[a]).show():b.hide()};this.container.on("click keydown",".dropdown",function(b){e.utils.isKeydownButNotEnterEvent(b)||(b.preventDefault(),d||a.container.toggleClass("open"),a.container.hasClass("open")&&a.container.parent().parent().find("li.library-selected").focus(),d=!0,setTimeout(function(){d=!1},400))}),this.setting.bind(f),f(this.setting())},renderContent:function(){var a,c=this;0!==b("#tmpl-"+c.templateSelector).length&&(a=wp.template(c.templateSelector),a&&c.container&&c.container.html(a(c.params)))}}),e.ColorControl=e.Control.extend({ready:function(){var a=this,b=this.container.find(".color-picker-hex");b.val(a.setting()).wpColorPicker({change:function(){a.setting.set(b.wpColorPicker("color"))},clear:function(){a.setting.set("")}}),this.setting.bind(function(a){b.val(a),b.wpColorPicker("color",a)})}}),e.MediaControl=e.Control.extend({ready:function(){function a(a){var d=b.Deferred();c.extended(e.UploadControl)?d.resolve():(a=parseInt(a,10),_.isNaN(a)||0>=a?(delete c.params.attachment,d.resolve()):c.params.attachment&&c.params.attachment.id===a&&d.resolve()),"pending"===d.state()&&wp.media.attachment(a).fetch().done(function(){c.params.attachment=this.attributes,d.resolve(),wp.customize.previewer.send(c.setting.id+"-attachment-data",this.attributes)}),d.done(function(){c.renderContent()})}var c=this;_.bindAll(c,"restoreDefault","removeFile","openFrame","select","pausePlayer"),c.container.on("click keydown",".upload-button",c.openFrame),c.container.on("click keydown",".upload-button",c.pausePlayer),c.container.on("click keydown",".thumbnail-image img",c.openFrame),c.container.on("click keydown",".default-button",c.restoreDefault),c.container.on("click keydown",".remove-button",c.pausePlayer),c.container.on("click keydown",".remove-button",c.removeFile),c.container.on("click keydown",".remove-button",c.cleanupPlayer),e.section(c.section()).container.on("expanded",function(){c.player&&c.player.setControlsSize()}).on("collapsed",function(){c.pausePlayer()}),a(c.setting()),c.setting.bind(a)},pausePlayer:function(){this.player&&this.player.pause()},cleanupPlayer:function(){this.player&&wp.media.mixin.removePlayer(this.player)},openFrame:function(a){e.utils.isKeydownButNotEnterEvent(a)||(a.preventDefault(),this.frame||this.initFrame(),this.frame.open())},initFrame:function(){this.frame=wp.media({button:{text:this.params.button_labels.frame_button},states:[new wp.media.controller.Library({title:this.params.button_labels.frame_title,library:wp.media.query({type:this.params.mime_type}),multiple:!1,date:!1})]}),this.frame.on("select",this.select)},select:function(){var a,b=this.frame.state().get("selection").first().toJSON(),c=window._wpmejsSettings||{};this.params.attachment=b,this.setting(b.id),a=this.container.find("audio, video").get(0),a?this.player=new MediaElementPlayer(a,c):this.cleanupPlayer()},restoreDefault:function(a){e.utils.isKeydownButNotEnterEvent(a)||(a.preventDefault(),this.params.attachment=this.params.defaultAttachment,this.setting(this.params.defaultAttachment.url))},removeFile:function(a){e.utils.isKeydownButNotEnterEvent(a)||(a.preventDefault(),this.params.attachment={},this.setting(""),this.renderContent())}}),e.UploadControl=e.MediaControl.extend({select:function(){var a,b=this.frame.state().get("selection").first().toJSON(),c=window._wpmejsSettings||{};this.params.attachment=b,this.setting(b.url),a=this.container.find("audio, video").get(0),a?this.player=new MediaElementPlayer(a,c):this.cleanupPlayer()},success:function(){},removerVisibility:function(){}}),e.ImageControl=e.UploadControl.extend({thumbnailSrc:function(){}}),e.BackgroundControl=e.UploadControl.extend({ready:function(){e.UploadControl.prototype.ready.apply(this,arguments)},select:function(){e.UploadControl.prototype.select.apply(this,arguments),wp.ajax.post("custom-background-add",{nonce:_wpCustomizeBackground.nonces.add,wp_customize:"on",theme:e.settings.theme.stylesheet,attachment_id:this.params.attachment.id})}}),e.CroppedImageControl=e.MediaControl.extend({openFrame:function(a){e.utils.isKeydownButNotEnterEvent(a)||(this.initFrame(),this.frame.setState("library").open())},initFrame:function(){var a=_wpMediaViewsL10n;this.frame=wp.media({button:{text:a.select,close:!1},states:[new wp.media.controller.Library({title:this.params.button_labels.frame_title,library:wp.media.query({type:"image"}),multiple:!1,date:!1,priority:20,suggestedWidth:this.params.width,suggestedHeight:this.params.height}),new wp.media.controller.CustomizeImageCropper({imgSelectOptions:this.calculateImageSelectOptions,control:this})]}),this.frame.on("select",this.onSelect,this),this.frame.on("cropped",this.onCropped,this),this.frame.on("skippedcrop",this.onSkippedCrop,this)},onSelect:function(){var a=this.frame.state().get("selection").first().toJSON();this.params.width!==a.width||this.params.height!==a.height||this.params.flex_width||this.params.flex_height?this.frame.setState("cropper"):(this.setImageFromAttachment(a),this.frame.close())},onCropped:function(a){this.setImageFromAttachment(a)},calculateImageSelectOptions:function(a,b){var c,d,e,f=b.get("control"),g=!!parseInt(f.params.flex_width,10),h=!!parseInt(f.params.flex_height,10),i=a.get("width"),j=a.get("height"),k=parseInt(f.params.width,10),l=parseInt(f.params.height,10),m=k/l,n=k,o=l;return b.set("canSkipCrop",!f.mustBeCropped(g,h,k,l,i,j)),i/j>m?(l=j,k=l*m):(k=i,l=k/m),c=(i-k)/2,d=(j-l)/2,e={handles:!0,keys:!0,instance:!0,persistent:!0,imageWidth:i,imageHeight:j,minWidth:n>k?k:n,minHeight:o>l?l:o,x1:c,y1:d,x2:k+c,y2:l+d},h===!1&&g===!1&&(e.aspectRatio=k+":"+l),!0===h&&(delete e.minHeight,e.maxWidth=i),!0===g&&(delete e.minWidth,e.maxHeight=j),e},mustBeCropped:function(a,b,c,d,e,f){return!0===a&&!0===b?!1:!0===a&&d===f?!1:!0===b&&c===e?!1:c===e&&d===f?!1:!(c>=e)},onSkippedCrop:function(){var a=this.frame.state().get("selection").first().toJSON();this.setImageFromAttachment(a)},setImageFromAttachment:function(a){this.params.attachment=a,this.setting(a.id)}}),e.SiteIconControl=e.CroppedImageControl.extend({initFrame:function(){var a=_wpMediaViewsL10n;this.frame=wp.media({button:{text:a.select,close:!1},states:[new wp.media.controller.Library({title:this.params.button_labels.frame_title,library:wp.media.query({type:"image"}),multiple:!1,date:!1,priority:20,suggestedWidth:this.params.width,suggestedHeight:this.params.height}),new wp.media.controller.SiteIconCropper({imgSelectOptions:this.calculateImageSelectOptions,control:this})]}),this.frame.on("select",this.onSelect,this),this.frame.on("cropped",this.onCropped,this),this.frame.on("skippedcrop",this.onSkippedCrop,this)},onSelect:function(){var a=this.frame.state().get("selection").first().toJSON(),b=this;this.params.width!==a.width||this.params.height!==a.height||this.params.flex_width||this.params.flex_height?this.frame.setState("cropper"):wp.ajax.post("crop-image",{nonce:a.nonces.edit,id:a.id,context:"site-icon",cropDetails:{x1:0,y1:0,width:this.params.width,height:this.params.height,dst_width:this.params.width,dst_height:this.params.height}}).done(function(a){b.setImageFromAttachment(a),b.frame.close()}).fail(function(){b.frame.trigger("content:error:crop")})},setImageFromAttachment:function(a){var c,d=["site_icon-32","thumbnail","full"];_.each(d,function(b){c||_.isUndefined(a.sizes[b])||(c=a.sizes[b])}),this.params.attachment=a,this.setting(a.id),b('link[sizes="32x32"]').attr("href",c.url)},removeFile:function(a){e.utils.isKeydownButNotEnterEvent(a)||(a.preventDefault(),this.params.attachment={},this.setting(""),this.renderContent(),b('link[rel="icon"]').attr("href",""))}}),e.HeaderControl=e.Control.extend({ready:function(){this.btnRemove=b("#customize-control-header_image .actions .remove"),this.btnNew=b("#customize-control-header_image .actions .new"),_.bindAll(this,"openMedia","removeImage"),this.btnNew.on("click",this.openMedia),this.btnRemove.on("click",this.removeImage),e.HeaderTool.currentHeader=this.getInitialHeaderImage(),new e.HeaderTool.CurrentView({model:e.HeaderTool.currentHeader,el:"#customize-control-header_image .current .container"}),new e.HeaderTool.ChoiceListView({collection:e.HeaderTool.UploadsList=new e.HeaderTool.ChoiceList,el:"#customize-control-header_image .choices .uploaded .list"}),new e.HeaderTool.ChoiceListView({collection:e.HeaderTool.DefaultsList=new e.HeaderTool.DefaultsList,el:"#customize-control-header_image .choices .default .list"}),e.HeaderTool.combinedList=e.HeaderTool.CombinedList=new e.HeaderTool.CombinedList([e.HeaderTool.UploadsList,e.HeaderTool.DefaultsList]),wp.media.controller.Cropper.prototype.defaults.doCropArgs.wp_customize="on",wp.media.controller.Cropper.prototype.defaults.doCropArgs.theme=e.settings.theme.stylesheet},getInitialHeaderImage:function(){if(!e.get().header_image||!e.get().header_image_data||_.contains(["remove-header","random-default-image","random-uploaded-image"],e.get().header_image))return new e.HeaderTool.ImageModel;var a=_.find(_wpCustomizeHeader.uploads,function(a){return a.attachment_id===e.get().header_image_data.attachment_id});return 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\ No newline at end of file
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"),-1!==c.search(a)?b.activate():b.deactivate()}}),e.defaultConstructor=e.Setting,e.control=new e.Values({defaultConstructor:e.Control}),e.section=new e.Values({defaultConstructor:e.Section}),e.panel=new e.Values({defaultConstructor:e.Panel}),e.PreviewFrame=e.Messenger.extend({sensitivity:2e3,initialize:function(a,c){var d=b.Deferred();d.promise(this),this.container=a.container,this.signature=a.signature,b.extend(a,{channel:e.PreviewFrame.uuid()}),e.Messenger.prototype.initialize.call(this,a,c),this.add("previewUrl",a.previewUrl),this.query=b.extend(a.query||{},{customize_messenger_channel:this.channel()}),this.run(d)},run:function(a){var c=this,d=!1,f=!1;this._ready&&this.unbind("ready",this._ready),this._ready=function(){f=!0,d&&a.resolveWith(c)},this.bind("ready",this._ready),this.bind("ready",function(a){if(this.container.addClass("iframe-ready"),a){var b={panel:a.activePanels,section:a.activeSections,control:a.activeControls};_(b).each(function(a,b){e[b].each(function(c,d){var f=_.isUndefined(e.settings[b+"s"][d]);f&&_.isUndefined(a[d])||(a[d]?c.activate():c.deactivate())})}),a.settingValidities&&e._handleSettingValidities({settingValidities:a.settingValidities,focusInvalidControl:!1})}}),this.request=b.ajax(this.previewUrl(),{type:"POST",data:this.query,xhrFields:{withCredentials:!0}}),this.request.fail(function(){a.rejectWith(c,["request failure"])}),this.request.done(function(g){var h,i=c.request.getResponseHeader("Location"),j=c.signature;return i&&i!==c.previewUrl()?void a.rejectWith(c,["redirect",i]):"0"===g?void c.login(a):"-1"===g?void a.rejectWith(c,["cheatin"]):(h=g.lastIndexOf(j),-1===h||h<g.lastIndexOf("</html>")?void a.rejectWith(c,["unsigned"]):(g=g.slice(0,h)+g.slice(h+j.length),c.iframe=b("<iframe />",{title:e.l10n.previewIframeTitle}).appendTo(c.container),c.iframe.one("load",function(){d=!0,f?a.resolveWith(c):setTimeout(function(){a.rejectWith(c,["ready timeout"])},c.sensitivity)}),c.targetWindow(c.iframe[0].contentWindow),c.targetWindow().document.open(),c.targetWindow().document.write(g),void c.targetWindow().document.close()))})},login:function(a){var c,d=this;return c=function(){a.rejectWith(d,["logged out"])},this.triedLogin?c():void b.get(e.settings.url.ajax,{action:"logged-in"}).fail(c).done(function(f){var g;"1"!==f&&c(),g=b("<iframe />",{src:d.previewUrl(),title:e.l10n.previewIframeTitle}).hide(),g.appendTo(d.container),g.on("load",function(){d.triedLogin=!0,g.remove(),d.run(a)})})},destroy:function(){e.Messenger.prototype.destroy.call(this),this.request.abort(),this.iframe&&this.iframe.remove(),delete this.request,delete this.iframe,delete this.targetWindow}}),function(){var a=0;e.PreviewFrame.uuid=function(){return"preview-"+a++}}(),e.setDocumentTitle=function(a){var b,c;b=e.settings.documentTitleTmpl,c=b.replace("%s",a),document.title=c,e.trigger("title",c)},e.Previewer=e.Messenger.extend({refreshBuffer:250,initialize:function(a,c){var d=this,f=/^https?/;b.extend(this,c||{}),this.deferred={active:b.Deferred()},this.refresh=function(a){var b,c=a.refresh,d=function(){b=null,c.call(a)};return function(){if("number"!=typeof b){if(!a.loading)return d();a.abort()}clearTimeout(b),b=setTimeout(d,a.refreshBuffer)}}(this),this.container=e.ensure(a.container),this.allowedUrls=a.allowedUrls,this.signature=a.signature,a.url=window.location.href,e.Messenger.prototype.initialize.call(this,a),this.add("scheme",this.origin()).link(this.origin).setter(function(a){var b=a.match(f);return b?b[0]:""}),this.add("previewUrl",a.previewUrl).setter(function(a){var c,e;return e=document.createElement("a"),e.href=a,/\/wp-(admin|includes|content)(\/|$)/.test(e.pathname)?null:(b.each([a.replace(f,d.scheme()),a],function(a,e){return b.each(d.allowedUrls,function(a,b){var d;return b=b.replace(/\/+$/,""),d=e.replace(b,""),0===e.indexOf(b)&&/^([/#?]|$)/.test(d)?(c=e,!1):void 0}),c?!1:void 0}),c?c:null)}),this.previewUrl.bind(this.refresh),this.scroll=0,this.bind("scroll",function(a){this.scroll=a}),this.bind("url",this.previewUrl),this.bind("documentTitle",function(a){e.setDocumentTitle(a)})},query:function(){},abort:function(){this.loading&&(this.loading.destroy(),delete this.loading)},refresh:function(){var a=this;this.send("loading-initiated"),this.abort(),this.loading=new e.PreviewFrame({url:this.url(),previewUrl:this.previewUrl(),query:this.query()||{},container:this.container,signature:this.signature}),this.loading.done(function(){this.bind("synced",function(){a.preview&&a.preview.destroy(),a.preview=this,delete a.loading,a.targetWindow(this.targetWindow()),a.channel(this.channel()),a.deferred.active.resolve(),a.send("active")}),this.send("sync",{scroll:a.scroll,settings:e.get()})}),this.loading.fail(function(b,c){a.send("loading-failed"),"redirect"===b&&c&&a.previewUrl(c),"logged out"===b&&(a.preview&&(a.preview.destroy(),delete a.preview),a.login().done(a.refresh)),"cheatin"===b&&a.cheatin()})},login:function(){var a,c,d,f=this;return this._login?this._login:(a=b.Deferred(),this._login=a.promise(),c=new e.Messenger({channel:"login",url:e.settings.url.login}),d=b("<iframe />",{src:e.settings.url.login,title:e.l10n.loginIframeTitle}).appendTo(this.container),c.targetWindow(d[0].contentWindow),c.bind("login",function(){var b=f.refreshNonces();b.always(function(){d.remove(),c.destroy(),delete f._login}),b.done(function(){a.resolve()}),b.fail(function(){f.cheatin(),a.reject()})}),this._login)},cheatin:function(){b(document.body).empty().addClass("cheatin").append("<h1>"+e.l10n.cheatin+"</h1><p>"+e.l10n.notAllowed+"</p>")},refreshNonces:function(){var a,c=b.Deferred();return c.promise(),a=wp.ajax.post("customize_refresh_nonces",{wp_customize:"on",theme:e.settings.theme.stylesheet}),a.done(function(a){e.trigger("nonce-refresh",a),c.resolve()}),a.fail(function(){c.reject()}),c}}),e.settingConstructor={},e.controlConstructor={color:e.ColorControl,media:e.MediaControl,upload:e.UploadControl,image:e.ImageControl,cropped_image:e.CroppedImageControl,site_icon:e.SiteIconControl,header:e.HeaderControl,background:e.BackgroundControl,theme:e.ThemeControl},e.panelConstructor={},e.sectionConstructor={themes:e.ThemesSection},e._handleSettingValidities=function(a){var b,c=[],d=!1;_.each(a.settingValidities,function(a,b){var d=e(b);d&&(_.isObject(a)&&_.each(a,function(a,b){var f,g,h=!1;f=new e.Notification(b,_.extend({fromServer:!0},a)),g=d.notifications(f.code),g&&(h=f.type!==g.type||f.message!==g.message||!_.isEqual(f.data,g.data)),h&&d.notifications.remove(b),d.notifications.has(f.code)||d.notifications.add(b,f),c.push(d.id)}),d.notifications.each(function(b){"error"!==b.type||!0!==a&&a[b.code]||d.notifications.remove(b.code)}))}),a.focusInvalidControl&&(b=e.findControlsForSettings(c),_(_.values(b)).find(function(a){return _(a).find(function(a){var b=a.section()&&e.section.has(a.section())&&e.section(a.section()).expanded();return b&&a.expanded&&(b=a.expanded()),b&&(a.focus(),d=!0),d})}),d||_.isEmpty(b)||_.values(b)[0][0].focus())},e.findControlsForSettings=function(a){var b,c={};return _.each(_.unique(a),function(a){var d=e(a);d&&(b=d.findControls(),b&&b.length>0&&(c[a]=b))}),c},e.reflowPaneContents=_.bind(function(){var a,c,d,f=[],g=!1;document.activeElement&&(c=b(document.activeElement)),e.panel.each(function(b){var c=b.sections(),d=_.pluck(c,"container");f.push(b),a=b.container.find("ul:first"),e.utils.areElementListsEqual(d,a.children("[id]"))||(_(c).each(function(b){a.append(b.container)}),g=!0)}),e.section.each(function(b){var c=b.controls(),d=_.pluck(c,"container");b.panel()||f.push(b),a=b.container.find("ul:first"),e.utils.areElementListsEqual(d,a.children("[id]"))||(_(c).each(function(b){a.append(b.container)}),g=!0)}),f.sort(e.utils.prioritySort),d=_.pluck(f,"container"),a=b("#customize-theme-controls").children("ul"),e.utils.areElementListsEqual(d,a.children())||(_(f).each(function(b){a.append(b.container)}),g=!0),e.panel.each(function(a){var b=a.active();a.active.callbacks.fireWith(a.active,[b,b])}),e.section.each(function(a){var b=a.active();a.active.callbacks.fireWith(a.active,[b,b])}),g&&c&&c.focus(),e.trigger("pane-contents-reflowed")},e),b(function(){if(e.settings=window._wpCustomizeSettings,e.l10n=window._wpCustomizeControlsL10n,e.settings&&b.support.postMessage&&(b.support.cors||!e.settings.isCrossDomain)){var a,c=b(document.body),d=c.children(".wp-full-overlay"),f=b("#customize-info .panel-title.site-title"),g=b(".customize-controls-close"),h=b("#save"),i=b("#customize-footer-actions");b("#customize-controls").on("keydown",function(a){var c=13===a.which,d=b(a.target);c&&(d.is("input:not([type=button])")||d.is("select"))&&a.preventDefault()}),b(".customize-info").find("> .accordion-section-title .customize-help-toggle").on("click",function(){var a=b(this).closest(".accordion-section"),c=a.find(".customize-panel-description:first");a.hasClass("cannot-expand")||(a.hasClass("open")?(a.toggleClass("open"),c.slideUp(e.Panel.prototype.defaultExpandedArguments.duration),b(this).attr("aria-expanded",!1)):(c.slideDown(e.Panel.prototype.defaultExpandedArguments.duration),a.toggleClass("open"),b(this).attr("aria-expanded",!0)))}),e.previewer=new e.Previewer({container:"#customize-preview",form:"#customize-controls",previewUrl:e.settings.url.preview,allowedUrls:e.settings.url.allowed,signature:"WP_CUSTOMIZER_SIGNATURE"},{nonce:e.settings.nonce,query:function(){var a={};return e.each(function(b,c){b._dirty&&(a[c]=b())}),{wp_customize:"on",theme:e.settings.theme.stylesheet,customized:JSON.stringify(a),nonce:this.nonce.preview}},save:function(){function a(a){k[a.id]=!0}var d,f,g,i=this,j=e.state("processing"),k={},l=[];c.addClass("saving"),e.bind("change",a),f=function(){var d,f;return e.each(function(a){a.notifications.each(function(b){"error"!==b.type||b.fromServer||l.push(a.id)})}),g=e.findControlsForSettings(l),_.isEmpty(g)?(f=b.extend(i.query(),{nonce:i.nonce.save}),d=wp.ajax.post("customize_save",f),h.prop("disabled",!0),e.trigger("save",d),d.always(function(){c.removeClass("saving"),h.prop("disabled",!1),e.unbind("change",a)}),d.fail(function(a){"0"===a?a="not_logged_in":"-1"===a&&(a="invalid_nonce"),"invalid_nonce"===a?i.cheatin():"not_logged_in"===a&&(i.preview.iframe.hide(),i.login().done(function(){i.save(),i.preview.iframe.show()})),a.setting_validities&&e._handleSettingValidities({settingValidities:a.setting_validities,focusInvalidControl:!0}),e.trigger("error",a)}),void d.done(function(a){e.each(function(a){k[a.id]||(a._dirty=!1)}),e.previewer.send("saved",a),a.setting_validities&&e._handleSettingValidities({settingValidities:a.setting_validities,focusInvalidControl:!0}),e.trigger("saved",a),_.isEmpty(k)||e.state("saved").set(!1)})):(_.values(g)[0][0].focus(),c.removeClass("saving"),void e.unbind("change",a))},0===j()?f():(d=function(){0===j()&&(e.state.unbind("change",d),f())},e.state.bind("change",d))}}),e.previewer.bind("nonce",function(a){b.extend(this.nonce,a)}),e.bind("nonce-refresh",function(a){b.extend(e.settings.nonce,a),b.extend(e.previewer.nonce,a),e.previewer.send("nonce-refresh",a)}),b.each(e.settings.settings,function(a,b){var c,d=e.settingConstructor[b.type]||e.Setting;c=new d(a,b.value,{transport:b.transport,previewer:e.previewer,dirty:!!b.dirty}),e.add(a,c)}),b.each(e.settings.panels,function(a,b){var c,d=e.panelConstructor[b.type]||e.Panel;c=new d(a,{params:b}),e.panel.add(a,c)}),b.each(e.settings.sections,function(a,b){var c,d=e.sectionConstructor[b.type]||e.Section;c=new d(a,{params:b}),e.section.add(a,c)}),b.each(e.settings.controls,function(a,b){var c,d=e.controlConstructor[b.type]||e.Control;c=new d(a,{params:b,previewer:e.previewer}),e.control.add(a,c)}),_.each(["panel","section","control"],function(a){var b=e.settings.autofocus[a];b&&e[a](b,function(a){a.deferred.embedded.done(function(){e.previewer.deferred.active.done(function(){a.focus()})})})}),e.bind("ready",e.reflowPaneContents),b([e.panel,e.section,e.control]).each(function(a,b){var c=_.debounce(e.reflowPaneContents,100);b.bind("add",c),b.bind("change",c),b.bind("remove",c)}),e.previewer.previewUrl()?e.previewer.refresh():e.previewer.previewUrl(e.settings.url.home),function(){var a=new e.Values,b=a.create("saved"),c=a.create("activated"),d=a.create("processing"),f=a.create("paneVisible");a.bind("change",function(){c()?b()?(h.val(e.l10n.saved).prop("disabled",!0),g.find(".screen-reader-text").text(e.l10n.close)):(h.val(e.l10n.save).prop("disabled",!1),g.find(".screen-reader-text").text(e.l10n.cancel)):(h.val(e.l10n.activate).prop("disabled",!1),g.find(".screen-reader-text").text(e.l10n.cancel))}),b(!0),c(e.settings.theme.active),d(0),f(!0),e.bind("change",function(){a("saved").set(!1)}),e.bind("saved",function(){a("saved").set(!0),a("activated").set(!0)}),c.bind(function(a){a&&e.trigger("activated")}),e.state=a}(),h.click(function(a){e.previewer.save(),a.preventDefault()}).keydown(function(a){9!==a.which&&(13===a.which&&e.previewer.save(),a.preventDefault())}),g.keydown(function(a){9!==a.which&&(13===a.which&&this.click(),a.preventDefault())}),b(".collapse-sidebar").on("click",function(){e.state("paneVisible").set(!e.state("paneVisible").get())}),e.state("paneVisible").bind(function(a){d.toggleClass("expanded",a),d.toggleClass("collapsed",!a),a?b(".collapse-sidebar").attr({"aria-expanded":"true","aria-label":e.l10n.collapseSidebar}):b(".collapse-sidebar").attr({"aria-expanded":"false","aria-label":e.l10n.expandSidebar})}),b("body").on("keydown",function(a){var b,c=[],d=[],f=[];27===a.which&&(e.control.each(function(a){a.expanded&&a.expanded()&&_.isFunction(a.collapse)&&c.push(a)}),e.section.each(function(a){a.expanded()&&d.push(a)}),e.panel.each(function(a){a.expanded()&&f.push(a)}),c.length>0&&0===d.length&&(c.length=0),b=c[0]||d[0]||f[0],b&&(b.collapse(),a.preventDefault()))}),b(".customize-controls-preview-toggle").on("click",function(){d.toggleClass("preview-only")}),e.previewedDevice=new e.Value,e.bind("ready",function(){_.find(e.settings.previewableDevices,function(a,b){return!0===a["default"]?(e.previewedDevice.set(b),!0):void 0})}),i.find(".devices button").on("click",function(a){e.previewedDevice.set(b(a.currentTarget).data("device"))}),e.previewedDevice.bind(function(a){var c=b(".wp-full-overlay"),d="";i.find(".devices button").removeClass("active").attr("aria-pressed",!1),i.find(".devices .preview-"+a).addClass("active").attr("aria-pressed",!0),b.each(e.settings.previewableDevices,function(a){d+=" preview-"+a}),c.removeClass(d).addClass("preview-"+a)}),f.length&&e("blogname",function(a){var c=function(){f.text(b.trim(a())||e.l10n.untitledBlogName)};a.bind(c),c()}),a=new e.Messenger({url:e.settings.url.parent,channel:"loader"}),a.bind("back",function(){g.on("click.customize-controls-close",function(b){b.preventDefault(),a.send("close")})}),b(window).on("beforeunload",function(){return e.state("saved")()?void 0:(setTimeout(function(){d.removeClass("customize-loading")},1),e.l10n.saveAlert)}),b.each(["saved","change"],function(b,c){e.bind(c,function(){a.send(c)})}),e.bind("title",function(b){a.send("title",b)}),a.send("ready"),b.each({background_image:{controls:["background_repeat","background_position_x","background_attachment"],callback:function(a){return!!a}},show_on_front:{controls:["page_on_front","page_for_posts"],callback:function(a){return"page"===a}},header_textcolor:{controls:["header_textcolor"],callback:function(a){return"blank"!==a}}},function(a,c){e(a,function(a){b.each(c.controls,function(b,d){e.control(d,function(b){var d=function(a){b.container.toggle(c.callback(a))};d(a.get()),a.bind(d)})})})}),e.control("display_header_text",function(a){var b="";a.elements[0].unsync(e("header_textcolor")),a.element=new e.Element(a.container.find("input")),a.element.set("blank"!==a.setting()),a.element.bind(function(c){c||(b=e("header_textcolor").get()),a.setting.set(c?b:"blank")}),a.setting.bind(function(b){a.element.set("blank"!==b)})}),e("show_on_front","page_on_front",function(a,b){var c=function(){"page"===a()&&parseInt(b(),10)>0&&e.previewer.previewUrl.set(e.settings.url.home)};a.bind(c),b.bind(c)}),e("page_for_posts",function(a){a.bind(function(a){a=parseInt(a,10),a>0&&e.previewer.previewUrl.set(e.settings.url.home+"?page_id="+a)})}),e.previewer.bind("selective-refresh-setting-validities",function(a){e._handleSettingValidities({settingValidities:a,focusInvalidControl:!1})}),e.previewer.bind("focus-control-for-setting",function(a){var b;e.control.each(function(c){var d=_.pluck(c.settings,"id");-1!==_.indexOf(d,a)&&(b=c)}),b&&b.focus()}),e.previewer.bind("refresh",function(){e.previewer.refresh()}),e.trigger("ready")}})}(wp,jQuery);
\ No newline at end of file
diff --git a/wp-admin/js/theme.js b/wp-admin/js/theme.js
index 18596e824d..55706b3096 100644
--- a/wp-admin/js/theme.js
+++ b/wp-admin/js/theme.js
@@ -866,8 +866,12 @@ themes.view.Preview = themes.view.Details.extend({
 	html: themes.template( 'theme-preview' ),
 
 	render: function() {
-		var self = this, currentPreviewDevice,
-			data = this.model.toJSON();
+		var self = this,
+			currentPreviewDevice,
+			data = this.model.toJSON(),
+			$body = $( document.body );
+
+		$body.attr( 'aria-busy', 'true' );
 
 		this.$el.removeClass( 'iframe-ready' ).html( this.html( data ) );
 
@@ -879,8 +883,7 @@ themes.view.Preview = themes.view.Details.extend({
 		themes.router.navigate( themes.router.baseUrl( themes.router.themePath + this.model.get( 'id' ) ), { replace: true } );
 
 		this.$el.fadeIn( 200, function() {
-			$( 'body' ).addClass( 'theme-installer-active full-overlay-active' );
-			$( '.close-full-overlay' ).focus();
+			$body.addClass( 'theme-installer-active full-overlay-active' );
 		});
 
 		this.$el.find( 'iframe' ).one( 'load', function() {
@@ -890,6 +893,7 @@ themes.view.Preview = themes.view.Details.extend({
 
 	iframeLoaded: function() {
 		this.$el.addClass( 'iframe-ready' );
+		$( document.body ).attr( 'aria-busy', 'false' );
 	},
 
 	close: function() {
diff --git a/wp-admin/js/theme.min.js b/wp-admin/js/theme.min.js
index b0fbb4f610..88fe495d19 100644
--- a/wp-admin/js/theme.min.js
+++ b/wp-admin/js/theme.min.js
@@ -1 +1 @@
-window.wp=window.wp||{},function(a){var b,c;b=wp.themes=wp.themes||{},b.data=_wpThemeSettings,c=b.data.l10n,b.isInstall=!!b.data.settings.isInstall,_.extend(b,{model:{},view:{},routes:{},router:{},template:wp.template}),b.Model=Backbone.Model.extend({initialize:function(){var a;-1!==_.indexOf(b.data.installedThemes,this.get("slug"))&&this.set({installed:!0}),this.set({id:this.get("slug")||this.get("id")}),this.has("sections")&&(a=this.get("sections").description,this.set({description:a}))}}),b.view.Appearance=wp.Backbone.View.extend({el:"#wpbody-content .wrap .theme-browser",window:a(window),page:0,initialize:function(a){_.bindAll(this,"scroller"),this.SearchView=a.SearchView?a.SearchView:b.view.Search,this.window.bind("scroll",_.throttle(this.scroller,300))},render:function(){this.view=new b.view.Themes({collection:this.collection,parent:this}),this.search(),this.view.render(),this.$el.empty().append(this.view.el).addClass("rendered")},searchContainer:a("#wpbody h1:first"),search:function(){var d,e=this;1!==b.data.themes.length&&(d=new this.SearchView({collection:e.collection,parent:this}),d.render(),this.searchContainer.append(a.parseHTML('<label class="screen-reader-text" for="wp-filter-search-input">'+c.search+"</label>")).append(d.el))},scroller:function(){var a,b,c=this;a=this.window.scrollTop()+c.window.height(),b=c.$el.offset().top+c.$el.outerHeight(!1)-c.window.height(),b=Math.round(.9*b),a>b&&this.trigger("theme:scroll")}}),b.Collection=Backbone.Collection.extend({model:b.Model,terms:"",doSearch:function(c){this.terms!==c&&(this.terms=c,this.terms.length>0&&this.search(this.terms),""===this.terms&&(this.reset(b.data.themes),a("body").removeClass("no-results")),this.trigger("themes:update"))},search:function(c){var d,e,f,g,h,i;this.reset(b.data.themes,{silent:!0}),c=c.replace(/[-\/\\^$*+?.()|[\]{}]/g,"\\$&"),c=c.replace(/ /g,")(?=.*"),d=new RegExp("^(?=.*"+c+").+","i"),e=this.filter(function(a){return 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c=this;b.preventDefault(),wp.updates.maybeRequestFilesystemCredentials(b),a(document).on("wp-theme-install-success",function(a,b){c.model.get("id")===b.slug&&c.model.set({installed:!0})}),wp.updates.installTheme({slug:a(b.target).data("slug")})},updateTheme:function(b){var c=this;b.preventDefault(),wp.updates.maybeRequestFilesystemCredentials(b),a(document).on("wp-theme-update-success",function(a,b){c.model.off("change",c.render,c),c.model.get("id")===b.slug&&c.model.set({hasUpdate:!1,version:b.newVersion}),c.model.on("change",c.render,c)}),wp.updates.updateTheme({slug:a(b.target).parents("div.theme").first().data("slug")})}}),b.view.Details=wp.Backbone.View.extend({className:"theme-overlay",events:{click:"collapse","click .delete-theme":"deleteTheme","click .left":"previousTheme","click .right":"nextTheme","click #update-theme":"updateTheme"},html:b.template("theme-single"),render:function(){var 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c=this;this.parent=b.parent,this.setView("grid"),c.currentTheme(),this.listenTo(c.collection,"themes:update",function(){c.parent.page=0,c.currentTheme(),c.render(this)}),this.listenTo(c.collection,"query:success",function(a){_.isNumber(a)?(c.count.text(a),c.announceSearchResults(a)):(c.count.text(c.collection.length),c.announceSearchResults(c.collection.length))}),this.listenTo(c.collection,"query:empty",function(){a("body").addClass("no-results")}),this.listenTo(this.parent,"theme:scroll",function(){c.renderThemes(c.parent.page)}),this.listenTo(this.parent,"theme:close",function(){c.overlay&&c.overlay.closeOverlay()}),a("body").on("keyup",function(b){c.overlay&&(a("#request-filesystem-credentials-dialog").is(":visible")||(39===b.keyCode&&c.overlay.nextTheme(),37===b.keyCode&&c.overlay.previousTheme(),27===b.keyCode&&c.overlay.collapse(b)))})},render:function(){this.$el.empty(),1===b.data.themes.length&&(this.singleTheme=new 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0!==c&&(this.overlay.closeOverlay(),d.theme.trigger("theme:expand",c.cid))},announceSearchResults:function(a){0===a?wp.a11y.speak(c.noThemesFound):wp.a11y.speak(c.themesFound.replace("%d",a))}}),b.view.Search=wp.Backbone.View.extend({tagName:"input",className:"wp-filter-search",id:"wp-filter-search-input",searching:!1,attributes:{placeholder:c.searchPlaceholder,type:"search","aria-describedby":"live-search-desc"},events:{input:"search",keyup:"search",blur:"pushState"},initialize:function(a){this.parent=a.parent,this.listenTo(this.parent,"theme:close",function(){this.searching=!1})},search:function(a){"keyup"===a.type&&27===a.which&&(a.target.value=""),this.doSearch(a)},doSearch:_.debounce(function(a){var c={};this.collection.doSearch(a.target.value),this.searching&&13!==a.which?c.replace=!0:this.searching=!0,a.target.value?b.router.navigate(b.router.baseUrl(b.router.searchPath+a.target.value),c):b.router.navigate(b.router.baseUrl(""))},500),pushState:function(a){var c=b.router.baseUrl("");a.target.value&&(c=b.router.baseUrl(b.router.searchPath+a.target.value)),this.searching=!1,b.router.navigate(c)}}),b.Router=Backbone.Router.extend({routes:{"themes.php?theme=:slug":"theme","themes.php?search=:query":"search","themes.php?s=:query":"search","themes.php":"themes","":"themes"},baseUrl:function(a){return"themes.php"+a},themePath:"?theme=",searchPath:"?search=",search:function(b){a(".wp-filter-search").val(b)},themes:function(){a(".wp-filter-search").val("")},navigate:function(){Backbone.history._hasPushState&&Backbone.Router.prototype.navigate.apply(this,arguments)}}),b.Run={init:function(){this.themes=new b.Collection(b.data.themes),this.view=new b.view.Appearance({collection:this.themes}),this.render()},render:function(){this.view.render(),this.routes(),Backbone.history.start({root:b.data.settings.adminUrl,pushState:!0,hashChange:!1})},routes:function(){var c=this;b.router=new b.Router,b.router.on("route:theme",function(a){c.view.view.expand(a)}),b.router.on("route:themes",function(){c.themes.doSearch(""),c.view.trigger("theme:close")}),b.router.on("route:search",function(){a(".wp-filter-search").trigger("keyup")}),this.extraRoutes()},extraRoutes:function(){return!1}},b.view.InstallerSearch=b.view.Search.extend({events:{input:"search",keyup:"search"},terms:"",search:function(a){("keyup"!==a.type||9!==a.which&&16!==a.which)&&(this.collection=this.options.parent.view.collection,"keyup"===a.type&&27===a.which&&(a.target.value=""),this.doSearch(a.target.value))},doSearch:_.debounce(function(c){var d={};this.terms!==c&&(this.terms=c,d.search=c,"author:"===c.substring(0,7)&&(d.search="",d.author=c.slice(7)),"tag:"===c.substring(0,4)&&(d.search="",d.tag=[c.slice(4)]),a(".filter-links li > a.current").removeClass("current"),a("body").removeClass("show-filters filters-applied 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b.Collection,this.listenTo(this,"theme:end",function(){d.collection.loadingThemes||(d.collection.loadingThemes=!0,d.collection.currentQuery.page++,_.extend(d.collection.currentQuery.request,{page:d.collection.currentQuery.page}),d.collection.query(d.collection.currentQuery.request))}),this.listenTo(this.collection,"query:success",function(){a("body").removeClass("loading-content"),a(".theme-browser").find("div.error").remove()}),this.listenTo(this.collection,"query:fail",function(){a("body").removeClass("loading-content"),a(".theme-browser").find("div.error").remove(),a(".theme-browser").find("div.themes").before('<div class="error"><p>'+c.error+"</p></div>")}),this.view&&this.view.remove(),this.view=new b.view.Themes({collection:this.collection,parent:this}),this.page=0,this.$el.find(".themes").remove(),this.view.render(),this.$el.find(".theme-browser").append(this.view.el).addClass("rendered")},browse:function(a){this.collection.query({browse:a})},onSort:function(c){var d=a(c.target),e=d.data("sort");c.preventDefault(),a("body").removeClass("filters-applied show-filters"),d.hasClass(this.activeClass)||(this.sort(e),b.router.navigate(b.router.baseUrl(b.router.browsePath+e)))},sort:function(b){this.clearSearch(),a(".filter-links li > a, .theme-filter").removeClass(this.activeClass),a('[data-sort="'+b+'"]').addClass(this.activeClass),"favorites"===b?a("body").addClass("show-favorites-form"):a("body").removeClass("show-favorites-form"),this.browse(b)},onFilter:function(b){var c,d=a(b.target),e=d.data("filter");d.hasClass(this.activeClass)||(a(".filter-links li > a, .theme-section").removeClass(this.activeClass),d.addClass(this.activeClass),e&&(e=_.union([e,this.filtersChecked()]),c={tag:[e]},this.collection.query(c)))},addFilter:function(){this.filtersChecked()},applyFilters:function(b){var c,d=this.filtersChecked(),e={tag:d},f=a(".filtered-by .tags");b&&b.preventDefault(),a("body").addClass("filters-applied"),a(".filter-links li > 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c=b.router.baseUrl("");a.target.value&&(c=b.router.baseUrl(b.router.searchPath+a.target.value)),this.searching=!1,b.router.navigate(c)}}),b.Router=Backbone.Router.extend({routes:{"themes.php?theme=:slug":"theme","themes.php?search=:query":"search","themes.php?s=:query":"search","themes.php":"themes","":"themes"},baseUrl:function(a){return"themes.php"+a},themePath:"?theme=",searchPath:"?search=",search:function(b){a(".wp-filter-search").val(b)},themes:function(){a(".wp-filter-search").val("")},navigate:function(){Backbone.history._hasPushState&&Backbone.Router.prototype.navigate.apply(this,arguments)}}),b.Run={init:function(){this.themes=new b.Collection(b.data.themes),this.view=new b.view.Appearance({collection:this.themes}),this.render()},render:function(){this.view.render(),this.routes(),Backbone.history.start({root:b.data.settings.adminUrl,pushState:!0,hashChange:!1})},routes:function(){var c=this;b.router=new b.Router,b.router.on("route:theme",function(a){c.view.view.expand(a)}),b.router.on("route:themes",function(){c.themes.doSearch(""),c.view.trigger("theme:close")}),b.router.on("route:search",function(){a(".wp-filter-search").trigger("keyup")}),this.extraRoutes()},extraRoutes:function(){return!1}},b.view.InstallerSearch=b.view.Search.extend({events:{input:"search",keyup:"search"},terms:"",search:function(a){("keyup"!==a.type||9!==a.which&&16!==a.which)&&(this.collection=this.options.parent.view.collection,"keyup"===a.type&&27===a.which&&(a.target.value=""),this.doSearch(a.target.value))},doSearch:_.debounce(function(c){var d={};this.terms!==c&&(this.terms=c,d.search=c,"author:"===c.substring(0,7)&&(d.search="",d.author=c.slice(7)),"tag:"===c.substring(0,4)&&(d.search="",d.tag=[c.slice(4)]),a(".filter-links li > a.current").removeClass("current"),a("body").removeClass("show-filters filters-applied show-favorites-form"),this.collection.query(d),b.router.navigate(b.router.baseUrl(b.router.searchPath+c),{replace:!0}))},500)}),b.view.Installer=b.view.Appearance.extend({el:"#wpbody-content .wrap",events:{"click .filter-links li > a":"onSort","click .theme-filter":"onFilter","click .drawer-toggle":"moreFilters","click .filter-drawer .apply-filters":"applyFilters",'click .filter-group [type="checkbox"]':"addFilter","click .filter-drawer .clear-filters":"clearFilters","click .filtered-by":"backToFilters","click .favorites-form-submit":"saveUsername","keyup #wporg-username-input":"saveUsername"},render:function(){var d=this;this.search(),this.uploader(),this.collection=new b.Collection,this.listenTo(this,"theme:end",function(){d.collection.loadingThemes||(d.collection.loadingThemes=!0,d.collection.currentQuery.page++,_.extend(d.collection.currentQuery.request,{page:d.collection.currentQuery.page}),d.collection.query(d.collection.currentQuery.request))}),this.listenTo(this.collection,"query:success",function(){a("body").removeClass("loading-content"),a(".theme-browser").find("div.error").remove()}),this.listenTo(this.collection,"query:fail",function(){a("body").removeClass("loading-content"),a(".theme-browser").find("div.error").remove(),a(".theme-browser").find("div.themes").before('<div class="error"><p>'+c.error+"</p></div>")}),this.view&&this.view.remove(),this.view=new b.view.Themes({collection:this.collection,parent:this}),this.page=0,this.$el.find(".themes").remove(),this.view.render(),this.$el.find(".theme-browser").append(this.view.el).addClass("rendered")},browse:function(a){this.collection.query({browse:a})},onSort:function(c){var d=a(c.target),e=d.data("sort");c.preventDefault(),a("body").removeClass("filters-applied show-filters"),d.hasClass(this.activeClass)||(this.sort(e),b.router.navigate(b.router.baseUrl(b.router.browsePath+e)))},sort:function(b){this.clearSearch(),a(".filter-links li > a, .theme-filter").removeClass(this.activeClass),a('[data-sort="'+b+'"]').addClass(this.activeClass),"favorites"===b?a("body").addClass("show-favorites-form"):a("body").removeClass("show-favorites-form"),this.browse(b)},onFilter:function(b){var c,d=a(b.target),e=d.data("filter");d.hasClass(this.activeClass)||(a(".filter-links li > a, .theme-section").removeClass(this.activeClass),d.addClass(this.activeClass),e&&(e=_.union([e,this.filtersChecked()]),c={tag:[e]},this.collection.query(c)))},addFilter:function(){this.filtersChecked()},applyFilters:function(b){var c,d=this.filtersChecked(),e={tag:d},f=a(".filtered-by .tags");b&&b.preventDefault(),a("body").addClass("filters-applied"),a(".filter-links li > a.current").removeClass("current"),f.empty(),_.each(d,function(b){c=a('label[for="filter-id-'+b+'"]').text(),f.append('<span class="tag">'+c+"</span>")}),this.collection.query(e)},saveUsername:function(b){var c=a("#wporg-username-input").val(),d=a("#wporg-username-nonce").val(),e={browse:"favorites",user:c},f=this;return b&&b.preventDefault(),"keyup"!==b.type||13===b.which?wp.ajax.send("save-wporg-username",{data:{_wpnonce:d,username:c},success:function(){f.collection.query(e)}}):void 0},filtersChecked:function(){var b=a(".filter-group").find(":checkbox"),c=[];return _.each(b.filter(":checked"),function(b){c.push(a(b).prop("value"))}),0===c.length?(a(".filter-drawer .apply-filters").find("span").text(""),a(".filter-drawer .clear-filters").hide(),a("body").removeClass("filters-applied"),!1):(a(".filter-drawer .apply-filters").find("span").text(c.length),a(".filter-drawer .clear-filters").css("display","inline-block"),c)},activeClass:"current",searchContainer:a(".wp-filter .search-form"),uploader:function(){var b=a(".upload-view-toggle"),c=a(document.body);b.on("click",function(){c.toggleClass("show-upload-view"),b.attr("aria-expanded",c.hasClass("show-upload-view"))})},moreFilters:function(c){return c.preventDefault(),a("body").hasClass("filters-applied")?this.backToFilters():a("body").hasClass("show-filters")&&this.filtersChecked()?this.addFilter():(this.clearSearch(),b.router.navigate(b.router.baseUrl("")),void a("body").toggleClass("show-filters"))},clearFilters:function(b){var c=a(".filter-group").find(":checkbox"),d=this;b.preventDefault(),_.each(c.filter(":checked"),function(b){return a(b).prop("checked",!1),d.filtersChecked()})},backToFilters:function(b){b&&b.preventDefault(),a("body").removeClass("filters-applied")},clearSearch:function(){a("#wp-filter-search-input").val("")}}),b.InstallerRouter=Backbone.Router.extend({routes:{"theme-install.php?theme=:slug":"preview","theme-install.php?browse=:sort":"sort","theme-install.php?search=:query":"search","theme-install.php":"sort"},baseUrl:function(a){return"theme-install.php"+a},themePath:"?theme=",browsePath:"?browse=",searchPath:"?search=",search:function(b){a(".wp-filter-search").val(b)},navigate:function(){Backbone.history._hasPushState&&Backbone.Router.prototype.navigate.apply(this,arguments)}}),b.RunInstaller={init:function(){this.view=new b.view.Installer({section:"featured",SearchView:b.view.InstallerSearch}),this.render()},render:function(){this.view.render(),this.routes(),Backbone.history.start({root:b.data.settings.adminUrl,pushState:!0,hashChange:!1})},routes:function(){var c=this,d={};b.router=new b.InstallerRouter,b.router.on("route:preview",function(a){d.theme=a,c.view.collection.query(d),c.view.collection.once("update",function(){c.view.view.theme.preview()})}),b.router.on("route:sort",function(a){a||(a="featured"),c.view.sort(a),c.view.trigger("theme:close")}),b.router.on("route:search",function(){a(".wp-filter-search").focus().trigger("keyup")}),this.extraRoutes()},extraRoutes:function(){return!1}},a(document).ready(function(){b.isInstall?b.RunInstaller.init():b.Run.init(),a(".broken-themes .delete-theme").on("click",function(){return confirm(_wpThemeSettings.settings.confirmDelete)})})}(jQuery);var tb_position;jQuery(document).ready(function(a){tb_position=function(){var b=a("#TB_window"),c=a(window).width(),d=a(window).height(),e=c>1040?1040:c,f=0;a("#wpadminbar").length&&(f=parseInt(a("#wpadminbar").css("height"),10)),b.size()&&(b.width(e-50).height(d-45-f),a("#TB_iframeContent").width(e-50).height(d-75-f),b.css({"margin-left":"-"+parseInt((e-50)/2,10)+"px"}),"undefined"!=typeof document.body.style.maxWidth&&b.css({top:20+f+"px","margin-top":"0"}))},a(window).resize(function(){tb_position()})});
\ No newline at end of file
diff --git a/wp-includes/js/customize-loader.js b/wp-includes/js/customize-loader.js
index e7b411df30..85ad7455be 100644
--- a/wp-includes/js/customize-loader.js
+++ b/wp-includes/js/customize-loader.js
@@ -183,11 +183,11 @@ window.wp = window.wp || {};
 		 * Callback after the Customizer has been opened.
 		 */
 		opened: function() {
-			Loader.body.addClass( 'customize-active full-overlay-active' );
+			Loader.body.addClass( 'customize-active full-overlay-active' ).attr( 'aria-busy', 'true' );
 		},
 
 		/**
-		 * Close the Customizer overlay and return focus to the link that opened it.
+		 * Close the Customizer overlay.
 		 */
 		close: function() {
 			if ( ! this.active ) {
@@ -209,11 +209,6 @@ window.wp = window.wp || {};
 			if ( this.originalDocumentTitle ) {
 				document.title = this.originalDocumentTitle;
 			}
-
-			// Return focus to link that was originally clicked.
-			if ( this.link ) {
-				this.link.focus();
-			}
 		},
 
 		/**
@@ -227,13 +222,20 @@ window.wp = window.wp || {};
 			Loader.saved     = null;
 			Loader.body.removeClass( 'customize-active full-overlay-active' ).removeClass( 'customize-loading' );
 			$( window ).off( 'beforeunload', Loader.beforeunload );
+			/*
+			 * Return focus to the link that opened the Customizer overlay after
+			 * the body element visibility is restored.
+			 */
+			if ( Loader.link ) {
+				Loader.link.focus();
+			}
 		},
 
 		/**
 		 * Callback for the `load` event on the Customizer iframe.
 		 */
 		loaded: function() {
-			Loader.body.removeClass('customize-loading');
+			Loader.body.removeClass( 'customize-loading' ).attr( 'aria-busy', 'false' );
 		},
 
 		/**
diff --git a/wp-includes/js/customize-loader.min.js b/wp-includes/js/customize-loader.min.js
index 33a7933d1e..890cbe0203 100644
--- a/wp-includes/js/customize-loader.min.js
+++ b/wp-includes/js/customize-loader.min.js
@@ -1 +1 @@
-window.wp=window.wp||{},function(a,b){var c,d=wp.customize;b.extend(b.support,{history:!(!window.history||!history.pushState),hashchange:"onhashchange"in window&&(void 0===document.documentMode||document.documentMode>7)}),c=b.extend({},d.Events,{initialize:function(){this.body=b(document.body),c.settings&&b.support.postMessage&&(b.support.cors||!c.settings.isCrossDomain)&&(this.window=b(window),this.element=b('<div id="customize-container" />').appendTo(this.body),this.bind("open",this.overlay.show),this.bind("close",this.overlay.hide),b("#wpbody").on("click",".load-customize",function(a){a.preventDefault(),c.link=b(this),c.open(c.link.attr("href"))}),b.support.history&&this.window.on("popstate",c.popstate),b.support.hashchange&&(this.window.on("hashchange",c.hashchange),this.window.triggerHandler("hashchange")))},popstate:function(a){var b=a.originalEvent.state;b&&b.customize?c.open(b.customize):c.active&&c.close()},hashchange:function(){var a=window.location.toString().split("#")[1];a&&0===a.indexOf("wp_customize=on")&&c.open(c.settings.url+"?"+a),a||b.support.history||c.close()},beforeunload:function(){return c.saved()?void 0:c.settings.l10n.saveAlert},open:function(a){if(!this.active){if(c.settings.browser.mobile)return window.location=a;this.originalDocumentTitle=document.title,this.active=!0,this.body.addClass("customize-loading"),this.saved=new d.Value(!0),this.iframe=b("<iframe />",{src:a,title:c.settings.l10n.mainIframeTitle}).appendTo(this.element),this.iframe.one("load",this.loaded),this.messenger=new d.Messenger({url:a,channel:"loader",targetWindow:this.iframe[0].contentWindow}),this.messenger.bind("ready",function(){c.messenger.send("back")}),this.messenger.bind("close",function(){b.support.history?history.back():b.support.hashchange?window.location.hash="":c.close()}),b(window).on("beforeunload",this.beforeunload),this.messenger.bind("saved",function(){c.saved(!0)}),this.messenger.bind("change",function(){c.saved(!1)}),this.messenger.bind("title",function(a){window.document.title=a}),this.pushState(a),this.trigger("open")}},pushState:function(a){var c=a.split("?")[1];b.support.history&&window.location.href!==a?history.pushState({customize:a},"",a):!b.support.history&&b.support.hashchange&&c&&(window.location.hash="wp_customize=on&"+c),this.trigger("open")},opened:function(){c.body.addClass("customize-active full-overlay-active")},close:function(){if(this.active){if(!this.saved()&&!confirm(c.settings.l10n.saveAlert))return void history.forward();this.active=!1,this.trigger("close"),this.originalDocumentTitle&&(document.title=this.originalDocumentTitle),this.link&&this.link.focus()}},closed:function(){c.iframe.remove(),c.messenger.destroy(),c.iframe=null,c.messenger=null,c.saved=null,c.body.removeClass("customize-active full-overlay-active").removeClass("customize-loading"),b(window).off("beforeunload",c.beforeunload)},loaded:function(){c.body.removeClass("customize-loading")},overlay:{show:function(){this.element.fadeIn(200,c.opened)},hide:function(){this.element.fadeOut(200,c.closed)}}}),b(function(){c.settings=_wpCustomizeLoaderSettings,c.initialize()}),d.Loader=c}(wp,jQuery);
\ No newline at end of file
+window.wp=window.wp||{},function(a,b){var c,d=wp.customize;b.extend(b.support,{history:!(!window.history||!history.pushState),hashchange:"onhashchange"in window&&(void 0===document.documentMode||document.documentMode>7)}),c=b.extend({},d.Events,{initialize:function(){this.body=b(document.body),c.settings&&b.support.postMessage&&(b.support.cors||!c.settings.isCrossDomain)&&(this.window=b(window),this.element=b('<div id="customize-container" />').appendTo(this.body),this.bind("open",this.overlay.show),this.bind("close",this.overlay.hide),b("#wpbody").on("click",".load-customize",function(a){a.preventDefault(),c.link=b(this),c.open(c.link.attr("href"))}),b.support.history&&this.window.on("popstate",c.popstate),b.support.hashchange&&(this.window.on("hashchange",c.hashchange),this.window.triggerHandler("hashchange")))},popstate:function(a){var b=a.originalEvent.state;b&&b.customize?c.open(b.customize):c.active&&c.close()},hashchange:function(){var a=window.location.toString().split("#")[1];a&&0===a.indexOf("wp_customize=on")&&c.open(c.settings.url+"?"+a),a||b.support.history||c.close()},beforeunload:function(){return c.saved()?void 0:c.settings.l10n.saveAlert},open:function(a){if(!this.active){if(c.settings.browser.mobile)return window.location=a;this.originalDocumentTitle=document.title,this.active=!0,this.body.addClass("customize-loading"),this.saved=new d.Value(!0),this.iframe=b("<iframe />",{src:a,title:c.settings.l10n.mainIframeTitle}).appendTo(this.element),this.iframe.one("load",this.loaded),this.messenger=new d.Messenger({url:a,channel:"loader",targetWindow:this.iframe[0].contentWindow}),this.messenger.bind("ready",function(){c.messenger.send("back")}),this.messenger.bind("close",function(){b.support.history?history.back():b.support.hashchange?window.location.hash="":c.close()}),b(window).on("beforeunload",this.beforeunload),this.messenger.bind("saved",function(){c.saved(!0)}),this.messenger.bind("change",function(){c.saved(!1)}),this.messenger.bind("title",function(a){window.document.title=a}),this.pushState(a),this.trigger("open")}},pushState:function(a){var c=a.split("?")[1];b.support.history&&window.location.href!==a?history.pushState({customize:a},"",a):!b.support.history&&b.support.hashchange&&c&&(window.location.hash="wp_customize=on&"+c),this.trigger("open")},opened:function(){c.body.addClass("customize-active full-overlay-active").attr("aria-busy","true")},close:function(){if(this.active){if(!this.saved()&&!confirm(c.settings.l10n.saveAlert))return void history.forward();this.active=!1,this.trigger("close"),this.originalDocumentTitle&&(document.title=this.originalDocumentTitle)}},closed:function(){c.iframe.remove(),c.messenger.destroy(),c.iframe=null,c.messenger=null,c.saved=null,c.body.removeClass("customize-active full-overlay-active").removeClass("customize-loading"),b(window).off("beforeunload",c.beforeunload),c.link&&c.link.focus()},loaded:function(){c.body.removeClass("customize-loading").attr("aria-busy","false")},overlay:{show:function(){this.element.fadeIn(200,c.opened)},hide:function(){this.element.fadeOut(200,c.closed)}}}),b(function(){c.settings=_wpCustomizeLoaderSettings,c.initialize()}),d.Loader=c}(wp,jQuery);
\ No newline at end of file
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 50855383a0..a7643ba376 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.7-alpha-38519';
+$wp_version = '4.7-alpha-38520';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.