/**
* @output wp-admin/js/theme.js
*/

/* global _wpThemeSettings, confirm, tb_position */
window.wp = window.wp || {};

( function($) {

// Set up our namespace...
var themes, l10n;
themes = wp.themes = wp.themes || {};

// Store the theme data and settings for organized and quick access.
// themes.data.settings, themes.data.themes, themes.data.l10n.
themes.data = _wpThemeSettings;
l10n = themes.data.l10n;

// Shortcut for isInstall check.
themes.isInstall = !! themes.data.settings.isInstall;

// Setup app structure.
_.extend( themes, { model: {}, view: {}, routes: {}, router: {}, template: wp.template });

themes.Model = Backbone.Model.extend({
// Adds attributes to the default data coming through the .org themes api.
// Map `id` to `slug` for shared code.
initialize: function() {
var description;

if ( this.get( 'slug' ) ) {
// If the theme is already installed, set an attribute.
if ( _.indexOf( themes.data.installedThemes, this.get( 'slug' ) ) !== -1 ) {
this.set({ installed: true });
}

// If the theme is active, set an attribute.
if ( themes.data.activeTheme === this.get( 'slug' ) ) {
this.set({ active: true });
}
}

// Set the attributes.
this.set({
// `slug` is for installation, `id` is for existing.
id: this.get( 'slug' ) || this.get( 'id' )
});

// Map `section.description` to `description`
// as the API sometimes returns it differently.
if ( this.has( 'sections' ) ) {
description = this.get( 'sections' ).description;
this.set({ description: description });
}
}
});

// Main view controller for themes.php.
// Unifies and renders all available views.
themes.view.Appearance = wp.Backbone.View.extend({

el: '#wpbody-content .wrap .theme-browser',

window: $( window ),
// Pagination instance.
page: 0,

// Sets up a throttler for binding to 'scroll'.
initialize: function( options ) {
// Scroller checks how far the scroll position is.
_.bindAll( this, 'scroller' );

this.SearchView = options.SearchView ? options.SearchView : themes.view.Search;
// Bind to the scroll event and throttle
// the results from this.scroller.
this.window.on( 'scroll', _.throttle( this.scroller, 300 ) );
},

// Main render control.
render: function() {
// Setup the main theme view
// with the current theme collection.
this.view = new themes.view.Themes({
collection: this.collection,
parent: this
});

// Render search form.
this.search();

this.$el.removeClass( 'search-loading' );

// Render and append.
this.view.render();
this.$el.empty().append( this.view.el ).addClass( 'rendered' );
},

// Defines search element container.
searchContainer: $( '.search-form' ),

// Search input and view
// for current theme collection.
search: function() {
var view,
self = this;

// Don't render the search if there is only one theme.
if ( themes.data.themes.length === 1 ) {
return;
}

view = new this.SearchView({
collection: self.collection,
parent: this
});
self.SearchView = view;

// Render and append after screen title.
view.render();
this.searchContainer
.find( '.search-box' )
.append( $.parseHTML( '<label for="wp-filter-search-input">' + l10n.search + '</label>' ) )
.append( view.el );

this.searchContainer.on( 'submit', function( event ) {
event.preventDefault();
});
},

// Checks when the user gets close to the bottom
// of the mage and triggers a theme:scroll event.
scroller: function() {
var self = this,
bottom, threshold;

bottom = this.window.scrollTop() + self.window.height();
threshold = self.$el.offset().top + self.$el.outerHeight( false ) - self.window.height();
threshold = Math.round( threshold * 0.9 );

if ( bottom > threshold ) {
this.trigger( 'theme:scroll' );
}
}
});

// Set up the Collection for our theme data.
// @has 'id' 'name' 'screenshot' 'author' 'authorURI' 'version' 'active' ...
themes.Collection = Backbone.Collection.extend({

model: themes.Model,

// Search terms.
terms: '',

// Controls searching on the current theme collection
// and triggers an update event.
doSearch: function( value ) {

// Don't do anything if we've already done this search.
// Useful because the Search handler fires multiple times per keystroke.
if ( this.terms === value ) {
return;
}

// Updates terms with the value passed.
this.terms = value;

// If we have terms, run a search...
if ( this.terms.length > 0 ) {
this.search( this.terms );
}

// If search is blank, show all themes.
// Useful for resetting the views when you clean the input.
if ( this.terms === '' ) {
this.reset( themes.data.themes );
$( 'body' ).removeClass( 'no-results' );
}

// Trigger a 'themes:update' event.
this.trigger( 'themes:update' );
},

/**
* Performs a search within the collection.
*
* @uses RegExp
*/
search: function( term ) {
var match, results, haystack, name, description, author;

// Start with a full collection.
this.reset( themes.data.themes, { silent: true } );

// Trim the term.
term = term.trim();

// Escape the term string for RegExp meta characters.
term = term.replace( /[-\/\\^$*+?.()|[\]{}]/g, '\\$&' );

// Consider spaces as word delimiters and match the whole string
// so matching terms can be combined.
term = term.replace( / /g, ')(?=.*' );
match = new RegExp( '^(?=.*' + term + ').+', 'i' );

// Find results.
// _.filter() and .test().
results = this.filter( function( data ) {
name = data.get( 'name' ).replace( /(<([^>]+)>)/ig, '' );
description = data.get( 'description' ).replace( /(<([^>]+)>)/ig, '' );
author = data.get( 'author' ).replace( /(<([^>]+)>)/ig, '' );

haystack = _.union( [ name, data.get( 'id' ), description, author, data.get( 'tags' ) ] );

if ( match.test( data.get( 'author' ) ) && term.length > 2 ) {
data.set( 'displayAuthor', true );
}

return match.test( haystack );
});

if ( results.length === 0 ) {
this.trigger( 'query:empty' );
} else {
$( 'body' ).removeClass( 'no-results' );
}

this.reset( results );
},

// Paginates the collection with a helper method
// that slices the collection.
paginate: function( instance ) {
var collection = this;
instance = instance || 0;

// Themes per instance are set at 20.
collection = _( collection.rest( 20 * instance ) );
collection = _( collection.first( 20 ) );

return collection;
},

count: false,

/*
* Handles requests for more themes and caches results.
*
*
* When we are missing a cache object we fire an apiCall()
* which triggers events of `query:success` or `query:fail`.
*/
query: function( request ) {
/**
* @static
* @type Array
*/
var queries = this.queries,
self = this,
query, isPaginated, count;

// Store current query request args
// for later use with the event `theme:end`.
this.currentQuery.request = request;

// Search the query cache for matches.
query = _.find( queries, function( query ) {
return _.isEqual( query.request, request );
});

// If the request matches the stored currentQuery.request
// it means we have a paginated request.
isPaginated = _.has( request, 'page' );

// Reset the internal api page counter for non-paginated queries.
if ( ! isPaginated ) {
this.currentQuery.page = 1;
}

// Otherwise, send a new API call and add it to the cache.
if ( ! query && ! isPaginated ) {
query = this.apiCall( request ).done( function( data ) {

// Update the collection with the queried data.
if ( data.themes ) {
self.reset( data.themes );
count = data.info.results;
// Store the results and the query request.
queries.push( { themes: data.themes, request: request, total: count } );
}

// Trigger a collection refresh event
// and a `query:success` event with a `count` argument.
self.trigger( 'themes:update' );
self.trigger( 'query:success', count );

if ( data.themes && data.themes.length === 0 ) {
self.trigger( 'query:empty' );
}

}).fail( function() {
self.trigger( 'query:fail' );
});
} else {
// If it's a paginated request we need to fetch more themes...
if ( isPaginated ) {
return this.apiCall( request, isPaginated ).done( function( data ) {
// Add the new themes to the current collection.
// @todo Update counter.
self.add( data.themes );
self.trigger( 'query:success' );

// We are done loading themes for now.
self.loadingThemes = false;

}).fail( function() {
self.trigger( 'query:fail' );
});
}

if ( query.themes.length === 0 ) {
self.trigger( 'query:empty' );
} else {
$( 'body' ).removeClass( 'no-results' );
}

// Only trigger an update event since we already have the themes
// on our cached object.
if ( _.isNumber( query.total ) ) {
this.count = query.total;
}

this.reset( query.themes );
if ( ! query.total ) {
this.count = this.length;
}

this.trigger( 'themes:update' );
this.trigger( 'query:success', this.count );
}
},

// Local cache array for API queries.
queries: [],

// Keep track of current query so we can handle pagination.
currentQuery: {
page: 1,
request: {}
},

// Send request to api.wordpress.org/themes.
apiCall: function( request, paginated ) {
return wp.ajax.send( 'query-themes', {
data: {
// Request data.
request: _.extend({
per_page: 100
}, request)
},

beforeSend: function() {
if ( ! paginated ) {
// Spin it.
$( 'body' ).addClass( 'loading-content' ).removeClass( 'no-results' );
}
}
});
},

// Static status controller for when we are loading themes.
loadingThemes: false
});

// This is the view that controls each theme item
// that will be displayed on the screen.
themes.view.Theme = wp.Backbone.View.extend({

// Wrap theme data on a div.theme element.
className: 'theme',

// Reflects which theme view we have.
// 'grid' (default) or 'detail'.
state: 'grid',

// The HTML template for each element to be rendered.
html: themes.template( 'theme' ),

events: {
'click': themes.isInstall ? 'preview': 'expand',
'keydown': themes.isInstall ? 'preview': 'expand',
'touchend': themes.isInstall ? 'preview': 'expand',
'keyup': 'addFocus',
'touchmove': 'preventExpand',
'click .theme-install': 'installTheme',
'click .update-message': 'updateTheme'
},

touchDrag: false,

initialize: function() {
this.model.on( 'change', this.render, this );
},

render: function() {
var data = this.model.toJSON();

// Render themes using the html template.
this.$el.html( this.html( data ) ).attr( 'data-slug', data.id );

// Renders active theme styles.
this.activeTheme();

if ( this.model.get( 'displayAuthor' ) ) {
this.$el.addClass( 'display-author' );
}
},

// Adds a class to the currently active theme
// and to the overlay in detailed view mode.
activeTheme: function() {
if ( this.model.get( 'active' ) ) {
this.$el.addClass( 'active' );
}
},

// Add class of focus to the theme we are focused on.
addFocus: function() {
var $themeToFocus = ( $( ':focus' ).hasClass( 'theme' ) ) ? $( ':focus' ) : $(':focus').parents('.theme');

$('.theme.focus').removeClass('focus');
$themeToFocus.addClass('focus');
},

// Single theme overlay screen.
// It's shown when clicking a theme.
expand: function( event ) {
var self = this;

event = event || window.event;

// 'Enter' and 'Space' keys expand the details view when a theme is :focused.
if ( event.type === 'keydown' && ( event.which !== 13 && event.which !== 32 ) ) {
return;
}

// Bail if the user scrolled on a touch device.
if ( this.touchDrag === true ) {
return this.touchDrag = false;
}

// Prevent the modal from showing when the user clicks
// one of the direct action buttons.
if ( $( event.target ).is( '.theme-actions a' ) ) {
return;
}

// Prevent the modal from showing when the user clicks one of the direct action buttons.
if ( $( event.target ).is( '.theme-actions a, .update-message, .button-link, .notice-dismiss' ) ) {
return;
}

// Set focused theme to current element.
themes.focusedTheme = this.$el;

this.trigger( 'theme:expand', self.model.cid );
},

preventExpand: function() {
this.touchDrag = true;
},

preview: function( event ) {
var self = this,
current, preview;

event = event || window.event;

// Bail if the user scrolled on a touch device.
if ( this.touchDrag === true ) {
return this.touchDrag = false;
}

// Allow direct link path to installing a theme.
if ( $( event.target ).not( '.install-theme-preview' ).parents( '.theme-actions' ).length ) {
return;
}

// 'Enter' and 'Space' keys expand the details view when a theme is :focused.
if ( event.type === 'keydown' && ( event.which !== 13 && event.which !== 32 ) ) {
return;
}

// Pressing Enter while focused on the buttons shouldn't open the preview.
if ( event.type === 'keydown' && event.which !== 13 && $( ':focus' ).hasClass( 'button' ) ) {
return;
}

event.preventDefault();

event = event || window.event;

// Set focus to current theme.
themes.focusedTheme = this.$el;

// Construct a new Preview view.
themes.preview = preview = new themes.view.Preview({
model: this.model
});

// Render the view and append it.
preview.render();
this.setNavButtonsState();

// Hide previous/next navigation if there is only one theme.
if ( this.model.collection.length === 1 ) {
preview.$el.addClass( 'no-navigation' );
} else {
preview.$el.removeClass( 'no-navigation' );
}

// Append preview.
$( 'div.wrap' ).append( preview.el );

// Listen to our preview object
// for `theme:next` and `theme:previous` events.
this.listenTo( preview, 'theme:next', function() {

// Keep local track of current theme model.
current = self.model;

// If we have ventured away from current model update the current model position.
if ( ! _.isUndefined( self.current ) ) {
current = self.current;
}

// Get next theme model.
self.current = self.model.collection.at( self.model.collection.indexOf( current ) + 1 );

// If we have no more themes, bail.
if ( _.isUndefined( self.current ) ) {
self.options.parent.parent.trigger( 'theme:end' );
return self.current = current;
}

preview.model = self.current;

// Render and append.
preview.render();
this.setNavButtonsState();
$( '.next-theme' ).trigger( 'focus' );
})
.listenTo( preview, 'theme:previous', function() {

// Keep track of current theme model.
current = self.model;

// Bail early if we are at the beginning of the collection.
if ( self.model.collection.indexOf( self.current ) === 0 ) {
return;
}

// If we have ventured away from current model update the current model position.
if ( ! _.isUndefined( self.current ) ) {
current = self.current;
}

// Get previous theme model.
self.current = self.model.collection.at( self.model.collection.indexOf( current ) - 1 );

// If we have no more themes, bail.
if ( _.isUndefined( self.current ) ) {
return;
}

preview.model = self.current;

// Render and append.
preview.render();
this.setNavButtonsState();
$( '.previous-theme' ).trigger( 'focus' );
});

this.listenTo( preview, 'preview:close', function() {
self.current = self.model;
});

},

// Handles .disabled classes for previous/next buttons in theme installer preview.
setNavButtonsState: function() {
var $themeInstaller = $( '.theme-install-overlay' ),
current = _.isUndefined( this.current ) ? this.model : this.current,
previousThemeButton = $themeInstaller.find( '.previous-theme' ),
nextThemeButton = $themeInstaller.find( '.next-theme' );

// Disable previous at the zero position.
if ( 0 === this.model.collection.indexOf( current ) ) {
previousThemeButton
.addClass( 'disabled' )
.prop( 'disabled', true );

nextThemeButton.trigger( 'focus' );
}

// Disable next if the next model is undefined.
if ( _.isUndefined( this.model.collection.at( this.model.collection.indexOf( current ) + 1 ) ) ) {
nextThemeButton
.addClass( 'disabled' )
.prop( 'disabled', true );

previousThemeButton.trigger( 'focus' );
}
},

installTheme: function( event ) {
var _this = this;

event.preventDefault();

wp.updates.maybeRequestFilesystemCredentials( event );

$( document ).on( 'wp-theme-install-success', function( event, response ) {
if ( _this.model.get( 'id' ) === response.slug ) {
_this.model.set( { 'installed': true } );
}
if ( response.blockTheme ) {
_this.model.set( { 'block_theme': true } );
}
} );

wp.updates.installTheme( {
slug: $( event.target ).data( 'slug' )
} );
},

updateTheme: function( event ) {
var _this = this;

if ( ! this.model.get( 'hasPackage' ) ) {
return;
}

event.preventDefault();

wp.updates.maybeRequestFilesystemCredentials( event );

$( document ).on( 'wp-theme-update-success', function( event, response ) {
_this.model.off( 'change', _this.render, _this );
if ( _this.model.get( 'id' ) === response.slug ) {
_this.model.set( {
hasUpdate: false,
version: response.newVersion
} );
}
_this.model.on( 'change', _this.render, _this );
} );

wp.updates.updateTheme( {
slug: $( event.target ).parents( 'div.theme' ).first().data( 'slug' )
} );
}
});

// Theme Details view.
// Sets up a modal overlay with the expanded theme data.
themes.view.Details = wp.Backbone.View.extend({

// Wrap theme data on a div.theme element.
className: 'theme-overlay',

events: {
'click': 'collapse',
'click .delete-theme': 'deleteTheme',
'click .left': 'previousTheme',
'click .right': 'nextTheme',
'click #update-theme': 'updateTheme',
'click .toggle-auto-update': 'autoupdateState'
},

// The HTML template for the theme overlay.
html: themes.template( 'theme-single' ),

render: function() {
var data = this.model.toJSON();
this.$el.html( this.html( data ) );
// Renders active theme styles.
this.activeTheme();
// Set up navigation events.
this.navigation();
// Checks screenshot size.
this.screenshotCheck( this.$el );
// Contain "tabbing" inside the overlay.
this.containFocus( this.$el );
},

// Adds a class to the currently active theme
// and to the overlay in detailed view mode.
activeTheme: function() {
// Check the model has the active property.
this.$el.toggleClass( 'active', this.model.get( 'active' ) );
},

// Set initial focus and constrain tabbing within the theme browser modal.
containFocus: function( $el ) {

// Set initial focus on the primary action control.
_.delay( function() {
$( '.theme-overlay' ).trigger( 'focus' );
}, 100 );

// Constrain tabbing within the modal.
$el.on( 'keydown.wp-themes', function( event ) {
var $firstFocusable = $el.find( '.theme-header button:not(.disabled)' ).first(),
$lastFocusable = $el.find( '.theme-actions a:visible' ).last();

// Check for the Tab key.
if ( 9 === event.which ) {
if ( $firstFocusable[0] === event.target && event.shiftKey ) {
$lastFocusable.trigger( 'focus' );
event.preventDefault();
} else if ( $lastFocusable[0] === event.target && ! event.shiftKey ) {
$firstFocusable.trigger( 'focus' );
event.preventDefault();
}
}
});
},

// Single theme overlay screen.
// It's shown when clicking a theme.
collapse: function( event ) {
var self = this,
scroll;

event = event || window.event;

// Prevent collapsing detailed view when there is only one theme available.
if ( themes.data.themes.length === 1 ) {
return;
}

// Detect if the click is inside the overlay and don't close it
// unless the target was the div.back button.
if ( $( event.target ).is( '.theme-backdrop' ) || $( event.target ).is( '.close' ) || event.keyCode === 27 ) {

// Add a temporary closing class while overlay fades out.
$( 'body' ).addClass( 'closing-overlay' );

// With a quick fade out animation.
this.$el.fadeOut( 130, function() {
// Clicking outside the modal box closes the overlay.
$( 'body' ).removeClass( 'closing-overlay' );
// Handle event cleanup.
self.closeOverlay();

// Get scroll position to avoid jumping to the top.
scroll = document.body.scrollTop;

// Clean the URL structure.
themes.router.navigate( themes.router.baseUrl( '' ) );

// Restore scroll position.
document.body.scrollTop = scroll;

// Return focus to the theme div.
if ( themes.focusedTheme ) {
themes.focusedTheme.find('.more-details').trigger( 'focus' );
}
});
}
},

// Handles .disabled classes for next/previous buttons.
navigation: function() {

// Disable Left/Right when at the start or end of the collection.
if ( this.model.cid === this.model.collection.at(0).cid ) {
this.$el.find( '.left' )
.addClass( 'disabled' )
.prop( 'disabled', true );
}
if ( this.model.cid === this.model.collection.at( this.model.collection.length - 1 ).cid ) {
this.$el.find( '.right' )
.addClass( 'disabled' )
.prop( 'disabled', true );
}
},

// Performs the actions to effectively close
// the theme details overlay.
closeOverlay: function() {
$( 'body' ).removeClass( 'modal-open' );
this.remove();
this.unbind();
this.trigger( 'theme:collapse' );
},

// Set state of the auto-update settings link after it has been changed and saved.
autoupdateState: function() {
var callback,
_this = this;

// Support concurrent clicks in different Theme Details overlays.
callback = function( event, data ) {
var autoupdate;
if ( _this.model.get( 'id' ) === data.asset ) {
autoupdate = _this.model.get( 'autoupdate' );
autoupdate.enabled = 'enable' === data.state;
_this.model.set( { autoupdate: autoupdate } );
$( document ).off( 'wp-auto-update-setting-changed', callback );
}
};

// Triggered in updates.js
$( document ).on( 'wp-auto-update-setting-changed', callback );
},

updateTheme: function( event ) {
var _this = this;
event.preventDefault();

wp.updates.maybeRequestFilesystemCredentials( event );

$( document ).on( 'wp-theme-update-success', function( event, response ) {
if ( _this.model.get( 'id' ) === response.slug ) {
_this.model.set( {
hasUpdate: false,
version: response.newVersion
} );
}
_this.render();
} );

wp.updates.updateTheme( {
slug: $( event.target ).data( 'slug' )
} );
},

deleteTheme: function( event ) {
var _this = this,
_collection = _this.model.collection,
_themes = themes;
event.preventDefault();

// Confirmation dialog for deleting a theme.
if ( ! window.confirm( wp.themes.data.settings.confirmDelete ) ) {
return;
}

wp.updates.maybeRequestFilesystemCredentials( event );

$( document ).one( 'wp-theme-delete-success', function( event, response ) {
_this.$el.find( '.close' ).trigger( 'click' );
$( '[data-slug="' + response.slug + '"]' ).css( { backgroundColor:'#faafaa' } ).fadeOut( 350, function() {
$( this ).remove();
_themes.data.themes = _.without( _themes.data.themes, _.findWhere( _themes.data.themes, { id: response.slug } ) );

$( '.wp-filter-search' ).val( '' );
_collection.doSearch( '' );
_collection.remove( _this.model );
_collection.trigger( 'themes:update' );
} );
} );

wp.updates.deleteTheme( {
slug: this.model.get( 'id' )
} );
},

nextTheme: function() {
var self = this;
self.trigger( 'theme:next', self.model.cid );
return false;
},

previousTheme: function() {
var self = this;
self.trigger( 'theme:previous', self.model.cid );
return false;
},

// Checks if the theme screenshot is the old 300px width version
// and adds a corresponding class if it's true.
screenshotCheck: function( el ) {
var screenshot, image;

screenshot = el.find( '.screenshot img' );
image = new Image();
image.src = screenshot.attr( 'src' );

// Width check.
if ( image.width && image.width <= 300 ) {
el.addClass( 'small-screenshot' );
}
}
});

// Theme Preview view.
// Sets up a modal overlay with the expanded theme data.
themes.view.Preview = themes.view.Details.extend({

className: 'wp-full-overlay expanded',
el: '.theme-install-overlay',

events: {
'click .close-full-overlay': 'close',
'click .collapse-sidebar': 'collapse',
'click .devices button': 'previewDevice',
'click .previous-theme': 'previousTheme',
'click .next-theme': 'nextTheme',
'keyup': 'keyEvent',
'click .theme-install': 'installTheme'
},

// The HTML template for the theme preview.
html: themes.template( 'theme-preview' ),

render: function() {
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 ) );

currentPreviewDevice = this.$el.data( 'current-preview-device' );
if ( currentPreviewDevice ) {
self.togglePreviewDeviceButtons( currentPreviewDevice );
}

themes.router.navigate( themes.router.baseUrl( themes.router.themePath + this.model.get( 'id' ) ), { replace: false } );

this.$el.fadeIn( 200, function() {
$body.addClass( 'theme-installer-active full-overlay-active' );
});

this.$el.find( 'iframe' ).one( 'load', function() {
self.iframeLoaded();
});
},

iframeLoaded: function() {
this.$el.addClass( 'iframe-ready' );
$( document.body ).attr( 'aria-busy', 'false' );
},

close: function() {
this.$el.fadeOut( 200, function() {
$( 'body' ).removeClass( 'theme-installer-active full-overlay-active' );

// Return focus to the theme div.
if ( themes.focusedTheme ) {
themes.focusedTheme.find('.more-details').trigger( 'focus' );
}
}).removeClass( 'iframe-ready' );

// Restore the previous browse tab if available.
if ( themes.router.selectedTab ) {
themes.router.navigate( themes.router.baseUrl( '?browse=' + themes.router.selectedTab ) );
themes.router.selectedTab = false;
} else {
themes.router.navigate( themes.router.baseUrl( '' ) );
}
this.trigger( 'preview:close' );
this.undelegateEvents();
this.unbind();
return false;
},

collapse: function( event ) {
var $button = $( event.currentTarget );
if ( 'true' === $button.attr( 'aria-expanded' ) ) {
$button.attr({ 'aria-expanded': 'false', 'aria-label': l10n.expandSidebar });
} else {
$button.attr({ 'aria-expanded': 'true', 'aria-label': l10n.collapseSidebar });
}

this.$el.toggleClass( 'collapsed' ).toggleClass( 'expanded' );
return false;
},

previewDevice: function( event ) {
var device = $( event.currentTarget ).data( 'device' );

this.$el
.removeClass( 'preview-desktop preview-tablet preview-mobile' )
.addClass( 'preview-' + device )
.data( 'current-preview-device', device );

this.togglePreviewDeviceButtons( device );
},

togglePreviewDeviceButtons: function( newDevice ) {
var $devices = $( '.wp-full-overlay-footer .devices' );

$devices.find( 'button' )
.removeClass( 'active' )
.attr( 'aria-pressed', false );

$devices.find( 'button.preview-' + newDevice )
.addClass( 'active' )
.attr( 'aria-pressed', true );
},

keyEvent: function( event ) {
// The escape key closes the preview.
if ( event.keyCode === 27 ) {
this.undelegateEvents();
this.close();
}
// The right arrow key, next theme.
if ( event.keyCode === 39 ) {
_.once( this.nextTheme() );
}

// The left arrow key, previous theme.
if ( event.keyCode === 37 ) {
this.previousTheme();
}
},

installTheme: function( event ) {
var _this = this,
$target = $( event.target );
event.preventDefault();

if ( $target.hasClass( 'disabled' ) ) {
return;
}

wp.updates.maybeRequestFilesystemCredentials( event );

$( document ).on( 'wp-theme-install-success', function() {
_this.model.set( { 'installed': true } );
} );

wp.updates.installTheme( {
slug: $target.data( 'slug' )
} );
}
});

// Controls the rendering of div.themes,
// a wrapper that will hold all the theme elements.
themes.view.Themes = wp.Backbone.View.extend({

className: 'themes wp-clearfix',
$overlay: $( 'div.theme-overlay' ),

// Number to keep track of scroll position
// while in theme-overlay mode.
index: 0,

// The theme count element.
count: $( '.wrap .theme-count' ),

// The live themes count.
liveThemeCount: 0,

initialize: function( options ) {
var self = this;

// Set up parent.
this.parent = options.parent;

// Set current view to [grid].
this.setView( 'grid' );

// Move the active theme to the beginning of the collection.
self.currentTheme();

// When the collection is updated by user input...
this.listenTo( self.collection, 'themes:update', function() {
self.parent.page = 0;
self.currentTheme();
self.render( this );
} );

// Update theme count to full result set when available.
this.listenTo( self.collection, 'query:success', function( count ) {
if ( _.isNumber( count ) ) {
self.count.text( count );
self.announceSearchResults( count );
} else {
self.count.text( self.collection.length );
self.announceSearchResults( self.collection.length );
}
});

this.listenTo( self.collection, 'query:empty', function() {
$( 'body' ).addClass( 'no-results' );
});

this.listenTo( this.parent, 'theme:scroll', function() {
self.renderThemes( self.parent.page );
});

this.listenTo( this.parent, 'theme:close', function() {
if ( self.overlay ) {
self.overlay.closeOverlay();
}
} );

// Bind keyboard events.
$( 'body' ).on( 'keyup', function( event ) {
if ( ! self.overlay ) {
return;
}

// Bail if the filesystem credentials dialog is shown.
if ( $( '#request-filesystem-credentials-dialog' ).is( ':visible' ) ) {
return;
}

// Pressing the right arrow key fires a theme:next event.
if ( event.keyCode === 39 ) {
self.overlay.nextTheme();
}

// Pressing the left arrow key fires a theme:previous event.
if ( event.keyCode === 37 ) {
self.overlay.previousTheme();
}

// Pressing the escape key fires a theme:collapse event.
if ( event.keyCode === 27 ) {
self.overlay.collapse( event );
}
});
},

// Manages rendering of theme pages
// and keeping theme count in sync.
render: function() {
// Clear the DOM, please.
this.$el.empty();

// If the user doesn't have switch capabilities or there is only one theme
// in the collection, render the detailed view of the active theme.
if ( themes.data.themes.length === 1 ) {

// Constructs the view.
this.singleTheme = new themes.view.Details({
model: this.collection.models[0]
});

// Render and apply a 'single-theme' class to our container.
this.singleTheme.render();
this.$el.addClass( 'single-theme' );
this.$el.append( this.singleTheme.el );
}

// Generate the themes using page instance
// while checking the collection has items.
if ( this.options.collection.size() > 0 ) {
this.renderThemes( this.parent.page );
}

// Display a live theme count for the collection.
this.liveThemeCount = this.collection.count ? this.collection.count : this.collection.length;
this.count.text( this.liveThemeCount );

/*
* In the theme installer the themes count is already announced
* because `announceSearchResults` is called on `query:success`.
*/
if ( ! themes.isInstall ) {
this.announceSearchResults( this.liveThemeCount );
}
},

// Iterates through each instance of the collection
// and renders each theme module.
renderThemes: function( page ) {
var self = this;

self.instance = self.collection.paginate( page );

// If we have no more themes, bail.
if ( self.instance.size() === 0 ) {
// Fire a no-more-themes event.
this.parent.trigger( 'theme:end' );
return;
}

// Make sure the add-new stays at the end.
if ( ! themes.isInstall && page >= 1 ) {
$( '.add-new-theme' ).remove();
}

// Loop through the themes and setup each theme view.
self.instance.each( function( theme ) {
self.theme = new themes.view.Theme({
model: theme,
parent: self
});

// Render the views...
self.theme.render();
// ...and append them to div.themes.
self.$el.append( self.theme.el );

// Binds to theme:expand to show the modal box
// with the theme details.
self.listenTo( self.theme, 'theme:expand', self.expand, self );
});

// 'Add new theme' element shown at the end of the grid.
if ( ! themes.isInstall && themes.data.settings.canInstall ) {
this.$el.append( '<div class="theme add-new-theme"><a href="' + themes.data.settings.installURI + '"><div class="theme-screenshot"><span></span></div><h2 class="theme-name">' + l10n.addNew + '</h2></a></div>' );
}

this.parent.page++;
},

// Grabs current theme and puts it at the beginning of the collection.
currentTheme: function() {
var self = this,
current;

current = self.collection.findWhere({ active: true });

// Move the active theme to the beginning of the collection.
if ( current ) {
self.collection.remove( current );
self.collection.add( current, { at:0 } );
}
},

// Sets current view.
setView: function( view ) {
return view;
},

// Renders the overlay with the ThemeDetails view.
// Uses the current model data.
expand: function( id ) {
var self = this, $card, $modal;

// Set the current theme model.
this.model = self.collection.get( id );

// Trigger a route update for the current model.
themes.router.navigate( themes.router.baseUrl( themes.router.themePath + this.model.id ) );

// Sets this.view to 'detail'.
this.setView( 'detail' );
$( 'body' ).addClass( 'modal-open' );

// Set up the theme details view.
this.overlay = new themes.view.Details({
model: self.model
});

this.overlay.render();

if ( this.model.get( 'hasUpdate' ) ) {
$card = $( '[data-slug="' + this.model.id + '"]' );
$modal = $( this.overlay.el );

if ( $card.find( '.updating-message' ).length ) {
$modal.find( '.notice-warning h3' ).remove();
$modal.find( '.notice-warning' )
.removeClass( 'notice-large' )
.addClass( 'updating-message' )
.find( 'p' ).text( wp.updates.l10n.updating );
} else if ( $card.find( '.notice-error' ).length ) {
$modal.find( '.notice-warning' ).remove();
}
}

this.$overlay.html( this.overlay.el );

// Bind to theme:next and theme:previous triggered by the arrow keys.
// Keep track of the current model so we can infer an index position.
this.listenTo( this.overlay, 'theme:next', function() {
// Renders the next theme on the overlay.
self.next( [ self.model.cid ] );

})
.listenTo( this.overlay, 'theme:previous', function() {
// Renders the previous theme on the overlay.
self.previous( [ self.model.cid ] );
});
},

/*
* This method renders the next theme on the overlay modal
* based on the current position in the collection.
*
* @params [model cid]
*/
next: function( args ) {
var self = this,
model, nextModel;

// Get the current theme.
model = self.collection.get( args[0] );
// Find the next model within the collection.
nextModel = self.collection.at( self.collection.indexOf( model ) + 1 );

// Confidence check which also serves as a boundary test.
if ( nextModel !== undefined ) {

// We have a new theme...
// Close the overlay.
this.overlay.closeOverlay();

// Trigger a route update for the current model.
self.theme.trigger( 'theme:expand', nextModel.cid );

}
},

/*
* This method renders the previous theme on the overlay modal
* based on the current position in the collection.
*
* @params [model cid]
*/
previous: function( args ) {
var self = this,
model, previousModel;

// Get the current theme.
model = self.collection.get( args[0] );
// Find the previous model within the collection.
previousModel = self.collection.at( self.collection.indexOf( model ) - 1 );

if ( previousModel !== undefined ) {

// We have a new theme...
// Close the overlay.
this.overlay.closeOverlay();

// Trigger a route update for the current model.
self.theme.trigger( 'theme:expand', previousModel.cid );

}
},

// Dispatch audible search results feedback message.
announceSearchResults: function( count ) {
if ( 0 === count ) {
wp.a11y.speak( l10n.noThemesFound );
} else {
wp.a11y.speak( l10n.themesFound.replace( '%d', count ) );
}
}
});

// Search input view controller.
themes.view.Search = wp.Backbone.View.extend({

tagName: 'input',
className: 'wp-filter-search',
id: 'wp-filter-search-input',
searching: false,

attributes: {
type: 'search',
'aria-describedby': 'live-search-desc'
},

events: {
'input': 'search',
'keyup': 'search',
'blur': 'pushState'
},

initialize: function( options ) {

this.parent = options.parent;

this.listenTo( this.parent, 'theme:close', function() {
this.searching = false;
} );

},

search: function( event ) {
// Clear on escape.
if ( event.type === 'keyup' && event.which === 27 ) {
event.target.value = '';
}

// Since doSearch is debounced, it will only run when user input comes to a rest.
this.doSearch( event );
},

// Runs a search on the theme collection.
doSearch: function( event ) {
var options = {};

this.collection.doSearch( event.target.value.replace( /\+/g, ' ' ) );

// if search is initiated and key is not return.
if ( this.searching && event.which !== 13 ) {
options.replace = true;
} else {
this.searching = true;
}

// Update the URL hash.
if ( event.target.value ) {
themes.router.navigate( themes.router.baseUrl( themes.router.searchPath + event.target.value ), options );
} else {
themes.router.navigate( themes.router.baseUrl( '' ) );
}
},

pushState: function( event ) {
var url = themes.router.baseUrl( '' );

if ( event.target.value ) {
url = themes.router.baseUrl( themes.router.searchPath + encodeURIComponent( event.target.value ) );
}

this.searching = false;
themes.router.navigate( url );

}
});

/**
* Navigate router.
*
* @since 4.9.0
*
* @param {string} url - URL to navigate to.
* @param {Object} state - State.
* @return {void}
*/
function navigateRouter( url, state ) {
var router = this;
if ( Backbone.history._hasPushState ) {
Backbone.Router.prototype.navigate.call( router, url, state );
}
}

// Sets up the routes events for relevant url queries.
// Listens to [theme] and [search] params.
themes.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( url ) {
return 'themes.php' + url;
},

themePath: '?theme=',
searchPath: '?search=',

search: function( query ) {
$( '.wp-filter-search' ).val( query.replace( /\+/g, ' ' ) );
},

themes: function() {
$( '.wp-filter-search' ).val( '' );
},

navigate: navigateRouter

});

// Execute and setup the application.
themes.Run = {
init: function() {
// Initializes the blog's theme library view.
// Create a new collection with data.
this.themes = new themes.Collection( themes.data.themes );

// Set up the view.
this.view = new themes.view.Appearance({
collection: this.themes
});

this.render();

// Start debouncing user searches after Backbone.history.start().
this.view.SearchView.doSearch = _.debounce( this.view.SearchView.doSearch, 500 );
},

render: function() {

// Render results.
this.view.render();
this.routes();

if ( Backbone.History.started ) {
Backbone.history.stop();
}
Backbone.history.start({
root: themes.data.settings.adminUrl,
pushState: true,
hashChange: false
});
},

routes: function() {
var self = this;
// Bind to our global thx object
// so that the object is available to sub-views.
themes.router = new themes.Router();

// Handles theme details route event.
themes.router.on( 'route:theme', function( slug ) {
self.view.view.expand( slug );
});

themes.router.on( 'route:themes', function() {
self.themes.doSearch( '' );
self.view.trigger( 'theme:close' );
});

// Handles search route event.
themes.router.on( 'route:search', function() {
$( '.wp-filter-search' ).trigger( 'keyup' );
});

this.extraRoutes();
},

extraRoutes: function() {
return false;
}
};

// Extend the main Search view.
themes.view.InstallerSearch = themes.view.Search.extend({

events: {
'input': 'search',
'keyup': 'search'
},

terms: '',

// Handles Ajax request for searching through themes in public repo.
search: function( event ) {

// Tabbing or reverse tabbing into the search input shouldn't trigger a search.
if ( event.type === 'keyup' && ( event.which === 9 || event.which === 16 ) ) {
return;
}

this.collection = this.options.parent.view.collection;

// Clear on escape.
if ( event.type === 'keyup' && event.which === 27 ) {
event.target.value = '';
}

this.doSearch( event.target.value );
},

doSearch: function( value ) {
var request = {};

// Don't do anything if the search terms haven't changed.
if ( this.terms === value ) {
return;
}

// Updates terms with the value passed.
this.terms = value;

request.search = value;

/*
* Intercept an [author] search.
*
* If input value starts with `author:` send a request
* for `author` instead of a regular `search`.
*/
if ( value.substring( 0, 7 ) === 'author:' ) {
request.search = '';
request.author = value.slice( 7 );
}

/*
* Intercept a [tag] search.
*
* If input value starts with `tag:` send a request
* for `tag` instead of a regular `search`.
*/
if ( value.substring( 0, 4 ) === 'tag:' ) {
request.search = '';
request.tag = [ value.slice( 4 ) ];
}

$( '.filter-links li > a.current' )
.removeClass( 'current' )
.removeAttr( 'aria-current' );

$( 'body' ).removeClass( 'show-filters filters-applied show-favorites-form' );
$( '.drawer-toggle' ).attr( 'aria-expanded', 'false' );

// Get the themes by sending Ajax POST request to api.wordpress.org/themes
// or searching the local cache.
this.collection.query( request );

// Set route.
themes.router.navigate( themes.router.baseUrl( themes.router.searchPath + encodeURIComponent( value ) ), { replace: true } );
}
});

themes.view.Installer = themes.view.Appearance.extend({

el: '#wpbody-content .wrap',

// Register events for sorting and filters in theme-navigation.
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 .edit-filters': 'backToFilters',
'click .favorites-form-submit' : 'saveUsername',
'keyup #wporg-username-input': 'saveUsername'
},

// Initial render method.
render: function() {
var self = this;

this.search();
this.uploader();

this.collection = new themes.Collection();

// Bump `collection.currentQuery.page` and request more themes if we hit the end of the page.
this.listenTo( this, 'theme:end', function() {

// Make sure we are not already loading.
if ( self.collection.loadingThemes ) {
return;
}

// Set loadingThemes to true and bump page instance of currentQuery.
self.collection.loadingThemes = true;
self.collection.currentQuery.page++;

// Use currentQuery.page to build the themes request.
_.extend( self.collection.currentQuery.request, { page: self.collection.currentQuery.page } );
self.collection.query( self.collection.currentQuery.request );
});

this.listenTo( this.collection, 'query:success', function() {
$( 'body' ).removeClass( 'loading-content' );
$( '.theme-browser' ).find( 'div.error' ).remove();
});

this.listenTo( this.collection, 'query:fail', function() {
$( 'body' ).removeClass( 'loading-content' );
$( '.theme-browser' ).find( 'div.error' ).remove();
$( '.theme-browser' ).find( 'div.themes' ).before( '<div class="notice notice-error"><p>' + l10n.error + '</p><p><button class="button try-again">' + l10n.tryAgain + '</button></p></div>' );
$( '.theme-browser .error .try-again' ).on( 'click', function( e ) {
e.preventDefault();
$( 'input.wp-filter-search' ).trigger( 'input' );
} );
});

if ( this.view ) {
this.view.remove();
}

// Sets up the view and passes the section argument.
this.view = new themes.view.Themes({
collection: this.collection,
parent: this
});

// Reset pagination every time the install view handler is run.
this.page = 0;

// Render and append.
this.$el.find( '.themes' ).remove();
this.view.render();
this.$el.find( '.theme-browser' ).append( this.view.el ).addClass( 'rendered' );
},

// Handles all the rendering of the public theme directory.
browse: function( section ) {
// Create a new collection with the proper theme data
// for each section.
if ( 'block-themes' === section ) {
// Get the themes by sending Ajax POST request to api.wordpress.org/themes
// or searching the local cache.
this.collection.query( { tag: 'full-site-editing' } );
} else {
this.collection.query( { browse: section } );
}
},

// Sorting navigation.
onSort: function( event ) {
var $el = $( event.target ),
sort = $el.data( 'sort' );

event.preventDefault();

$( 'body' ).removeClass( 'filters-applied show-filters' );
$( '.drawer-toggle' ).attr( 'aria-expanded', 'false' );

// Bail if this is already active.
if ( $el.hasClass( this.activeClass ) ) {
return;
}

this.sort( sort );

// Trigger a router.navigate update.
themes.router.navigate( themes.router.baseUrl( themes.router.browsePath + sort ) );
},

sort: function( sort ) {
this.clearSearch();

// Track sorting so we can restore the correct tab when closing preview.
themes.router.selectedTab = sort;

$( '.filter-links li > a, .theme-filter' )
.removeClass( this.activeClass )
.removeAttr( 'aria-current' );

$( '[data-sort="' + sort + '"]' )
.addClass( this.activeClass )
.attr( 'aria-current', 'page' );

if ( 'favorites' === sort ) {
$( 'body' ).addClass( 'show-favorites-form' );
} else {
$( 'body' ).removeClass( 'show-favorites-form' );
}

this.browse( sort );
},

// Filters and Tags.
onFilter: function( event ) {
var request,
$el = $( event.target ),
filter = $el.data( 'filter' );

// Bail if this is already active.
if ( $el.hasClass( this.activeClass ) ) {
return;
}

$( '.filter-links li > a, .theme-section' )
.removeClass( this.activeClass )
.removeAttr( 'aria-current' );
$el
.addClass( this.activeClass )
.attr( 'aria-current', 'page' );

if ( ! filter ) {
return;
}

// Construct the filter request
// using the default values.
filter = _.union( [ filter, this.filtersChecked() ] );
request = { tag: [ filter ] };

// Get the themes by sending Ajax POST request to api.wordpress.org/themes
// or searching the local cache.
this.collection.query( request );
},

// Clicking on a checkbox to add another filter to the request.
addFilter: function() {
this.filtersChecked();
},

// Applying filters triggers a tag request.
applyFilters: function( event ) {
var name,
tags = this.filtersChecked(),
request = { tag: tags },
filteringBy = $( '.filtered-by .tags' );

if ( event ) {
event.preventDefault();
}

if ( ! tags ) {
wp.a11y.speak( l10n.selectFeatureFilter );
return;
}

$( 'body' ).addClass( 'filters-applied' );
$( '.filter-links li > a.current' )
.removeClass( 'current' )
.removeAttr( 'aria-current' );

filteringBy.empty();

_.each( tags, function( tag ) {
name = $( 'label[for="filter-id-' + tag + '"]' ).text();
filteringBy.append( '<span class="tag">' + name + '</span>' );
});

// Get the themes by sending Ajax POST request to api.wordpress.org/themes
// or searching the local cache.
this.collection.query( request );
},

// Save the user's WordPress.org username and get his favorite themes.
saveUsername: function ( event ) {
var username = $( '#wporg-username-input' ).val(),
nonce = $( '#wporg-username-nonce' ).val(),
request = { browse: 'favorites', user: username },
that = this;

if ( event ) {
event.preventDefault();
}

// Save username on enter.
if ( event.type === 'keyup' && event.which !== 13 ) {
return;
}

return wp.ajax.send( 'save-wporg-username', {
data: {
_wpnonce: nonce,
username: username
},
success: function () {
// Get the themes by sending Ajax POST request to api.wordpress.org/themes
// or searching the local cache.
that.collection.query( request );
}
} );
},

/**
* Get the checked filters.
*
* @return {Array} of tags or false
*/
filtersChecked: function() {
var items = $( '.filter-group' ).find( ':checkbox' ),
tags = [];

_.each( items.filter( ':checked' ), function( item ) {
tags.push( $( item ).prop( 'value' ) );
});

// When no filters are checked, restore initial state and return.
if ( tags.length === 0 ) {
$( '.filter-drawer .apply-filters' ).find( 'span' ).text( '' );
$( '.filter-drawer .clear-filters' ).hide();
$( 'body' ).removeClass( 'filters-applied' );
return false;
}

$( '.filter-drawer .apply-filters' ).find( 'span' ).text( tags.length );
$( '.filter-drawer .clear-filters' ).css( 'display', 'inline-block' );

return tags;
},

activeClass: 'current',

/**
* When users press the "Upload Theme" button, show the upload form in place.
*/
uploader: function() {
var uploadViewToggle = $( '.upload-view-toggle' ),
$body = $( document.body );

uploadViewToggle.on( 'click', function() {
// Toggle the upload view.
$body.toggleClass( 'show-upload-view' );
// Toggle the `aria-expanded` button attribute.
uploadViewToggle.attr( 'aria-expanded', $body.hasClass( 'show-upload-view' ) );
});
},

// Toggle the full filters navigation.
moreFilters: function( event ) {
var $body = $( 'body' ),
$toggleButton = $( '.drawer-toggle' );

event.preventDefault();

if ( $body.hasClass( 'filters-applied' ) ) {
return this.backToFilters();
}

this.clearSearch();

themes.router.navigate( themes.router.baseUrl( '' ) );
// Toggle the feature filters view.
$body.toggleClass( 'show-filters' );
// Toggle the `aria-expanded` button attribute.
$toggleButton.attr( 'aria-expanded', $body.hasClass( 'show-filters' ) );
},

/**
* Clears all the checked filters.
*
* @uses filtersChecked()
*/
clearFilters: function( event ) {
var items = $( '.filter-group' ).find( ':checkbox' ),
self = this;

event.preventDefault();

_.each( items.filter( ':checked' ), function( item ) {
$( item ).prop( 'checked', false );
return self.filtersChecked();
});
},

backToFilters: function( event ) {
if ( event ) {
event.preventDefault();
}

$( 'body' ).removeClass( 'filters-applied' );
},

clearSearch: function() {
$( '#wp-filter-search-input').val( '' );
}
});

themes.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( url ) {
return 'theme-install.php' + url;
},

themePath: '?theme=',
browsePath: '?browse=',
searchPath: '?search=',

search: function( query ) {
$( '.wp-filter-search' ).val( query.replace( /\+/g, ' ' ) );
},

navigate: navigateRouter
});


themes.RunInstaller = {

init: function() {
// Set up the view.
// Passes the default 'section' as an option.
this.view = new themes.view.Installer({
section: 'popular',
SearchView: themes.view.InstallerSearch
});

// Render results.
this.render();

// Start debouncing user searches after Backbone.history.start().
this.view.SearchView.doSearch = _.debounce( this.view.SearchView.doSearch, 500 );
},

render: function() {

// Render results.
this.view.render();
this.routes();

if ( Backbone.History.started ) {
Backbone.history.stop();
}
Backbone.history.start({
root: themes.data.settings.adminUrl,
pushState: true,
hashChange: false
});
},

routes: function() {
var self = this,
request = {};

// Bind to our global `wp.themes` object
// so that the router is available to sub-views.
themes.router = new themes.InstallerRouter();

// Handles `theme` route event.
// Queries the API for the passed theme slug.
themes.router.on( 'route:preview', function( slug ) {

// Remove existing handlers.
if ( themes.preview ) {
themes.preview.undelegateEvents();
themes.preview.unbind();
}

// If the theme preview is active, set the current theme.
if ( self.view.view.theme && self.view.view.theme.preview ) {
self.view.view.theme.model = self.view.collection.findWhere( { 'slug': slug } );
self.view.view.theme.preview();
} else {

// Select the theme by slug.
request.theme = slug;
self.view.collection.query( request );
self.view.collection.trigger( 'update' );

// Open the theme preview.
self.view.collection.once( 'query:success', function() {
$( 'div[data-slug="' + slug + '"]' ).trigger( 'click' );
});

}
});

/*
* Handles sorting / browsing routes.
* Also handles the root URL triggering a sort request
* for `popular`, the default view.
*/
themes.router.on( 'route:sort', function( sort ) {
if ( ! sort ) {
sort = 'popular';
themes.router.navigate( themes.router.baseUrl( '?browse=popular' ), { replace: true } );
}
self.view.sort( sort );

// Close the preview if open.
if ( themes.preview ) {
themes.preview.close();
}
});

// The `search` route event. The router populates the input field.
themes.router.on( 'route:search', function() {
$( '.wp-filter-search' ).trigger( 'focus' ).trigger( 'keyup' );
});

this.extraRoutes();
},

extraRoutes: function() {
return false;
}
};

// Ready...
$( function() {
if ( themes.isInstall ) {
themes.RunInstaller.init();
} else {
themes.Run.init();
}

// Update the return param just in time.
$( document.body ).on( 'click', '.load-customize', function() {
var link = $( this ), urlParser = document.createElement( 'a' );
urlParser.href = link.prop( 'href' );
urlParser.search = $.param( _.extend(
wp.customize.utils.parseQueryString( urlParser.search.substr( 1 ) ),
{
'return': window.location.href
}
) );
link.prop( 'href', urlParser.href );
});

$( '.broken-themes .delete-theme' ).on( 'click', function() {
return confirm( _wpThemeSettings.settings.confirmDelete );
});
});

})( jQuery );

// Align theme browser thickbox.
jQuery( function($) {
window.tb_position = function() {
var tbWindow = $('#TB_window'),
width = $(window).width(),
H = $(window).height(),
W = ( 1040 < width ) ? 1040 : width,
adminbar_height = 0;

if ( $('#wpadminbar').length ) {
adminbar_height = parseInt( $('#wpadminbar').css('height'), 10 );
}

if ( tbWindow.length >= 1 ) {
tbWindow.width( W - 50 ).height( H - 45 - adminbar_height );
$('#TB_iframeContent').width( W - 50 ).height( H - 75 - adminbar_height );
tbWindow.css({'margin-left': '-' + parseInt( ( ( W - 50 ) / 2 ), 10 ) + 'px'});
if ( typeof document.body.style.maxWidth !== 'undefined' ) {
tbWindow.css({'top': 20 + adminbar_height + 'px', 'margin-top': '0'});
}
}
};

$(window).on( 'resize', function(){ tb_position(); });
});