WordPress/wp-admin/js/theme.js

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/* global _wpThemeSettings, confirm */
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;
// Setup app structure
_.extend( themes, { model: {}, view: {}, routes: {}, router: {}, template: wp.template });
themes.model = Backbone.Model.extend({});
// 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() {
// Scroller checks how far the scroll position is
_.bindAll( this, 'scroller' );
// Bind to the scroll event and throttle
// the results from this.scroller
this.window.bind( '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();
// Render and append
this.view.render();
No-JavaScript and no-Customizer support for the new Themes screen. JavaScript is rarely disabled, but graceful degradation is still important. For example, syntax errors can occur, usually with major WP updates that overhaul entire experiences and update external libraries combined with themes or plugins doing weird or old things. If this error is due to their current theme, a user needs to be able to access the themes screen to switch away from the theme. A more subtle issue could make things painful to diagnose. This commit renders the grid in PHP (the template is duplicated, but it lightweight, fairly mundane, and easy to sync). On Backbone render, the grid is then re-rendered from JavaScript so searches can occur. Customize and Live Preview is disabled if JS fails to kick in. If JS is disabled, old-school "Preview" links are displayed. No-Customizer support: The customizer is only supported when the browser supports postMessage (IE8+), and if the frontend is a different domain, CORS (IE10+). We use the .hide-if-no-customize class for this. Pre-customize "Preview" links should use .hide-if-customize. The .load-customize class should be used to declare a link that opens the customizer. This enables customize-loader.js to intercept this link and load the customizer on top of the current window, making for a smoother experience. fixes #25964. Built from https://develop.svn.wordpress.org/trunk@26726 git-svn-id: http://core.svn.wordpress.org/trunk@26615 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2013-12-06 11:11:10 -05:00
this.$el.empty().append( this.view.el ).addClass('rendered');
this.$el.append( '<br class="clear"/>' );
},
// 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 themes.view.Search({ collection: self.collection });
// Render and append after screen title
view.render();
$('#wpbody h2:first')
.append( $.parseHTML( '<label class="screen-reader-text" for="theme-search-input">' + l10n.search + '</label>' ) )
.append( view.el );
},
// Checks when the user gets close to the bottom
// of the mage and triggers a theme:scroll event
scroller: function() {
var self = this,
bottom, threshold;
bottom = this.window.scrollTop() + self.window.height();
threshold = self.$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 );
}
// Trigger an 'update' event
this.trigger( 'update' );
},
// Performs a search within the collection
// @uses RegExp
search: function( term ) {
var match, results, haystack;
// Start with a full collection
this.reset( themes.data.themes, { silent: true } );
// The RegExp object to match
//
// Consider spaces as word delimiters and match the whole string
// so matching terms can be combined
term = term.replace( ' ', ')(?=.*' );
match = new RegExp( '^(?=.*' + term + ').+', 'i' );
// Find results
// _.filter and .test
results = this.filter( function( data ) {
haystack = _.union( data.get( 'name' ), data.get( 'id' ), data.get( 'description' ), data.get( 'author' ), data.get( 'tags' ) );
if ( match.test( data.get( 'author' ) ) && term.length > 2 ) {
data.set( 'displayAuthor', true );
}
return match.test( haystack );
});
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 15
collection = _( collection.rest( 15 * instance ) );
collection = _( collection.first( 15 ) );
return collection;
}
});
// 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': 'expand',
'keydown': 'expand',
'touchend': 'expand',
'touchmove': 'preventExpand'
},
touchDrag: false,
render: function() {
var data = this.model.toJSON();
// Render themes using the html template
this.$el.html( this.html( data ) ).attr({
tabindex: 0,
'aria-describedby' : data.id + '-action ' + data.id + '-name'
});
// 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' );
}
},
// 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 ( $( event.target ).is( '.theme-actions a' ) ) {
return;
}
// Set focused theme to current element
themes.focusedTheme = this.$el;
this.trigger( 'theme:expand', self.model.cid );
},
preventExpand: function() {
this.touchDrag = true;
}
});
// Theme Details view
// Set ups 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'
},
// 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' ) );
},
// Keeps :focus within the theme details elements
containFocus: function( $el ) {
var $target;
// Move focus to the primary action
_.delay( function() {
$( '.theme-wrap a.button-primary:visible' ).focus();
}, 500 );
$el.on( 'keydown.wp-themes', function( event ) {
// Tab key
if ( event.which === 9 ) {
$target = $( event.target );
// Keep focus within the overlay by making the last link on theme actions
// switch focus to button.left on tabbing and vice versa
if ( $target.is( 'button.left' ) && event.shiftKey ) {
$el.find( '.theme-actions a:last-child' ).focus();
event.preventDefault();
} else if ( $target.is( '.theme-actions a:last-child' ) ) {
$el.find( 'button.left' ).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
$( 'body' ).removeClass( 'theme-overlay-open closing-overlay' );
// Handle event cleanup
self.closeOverlay();
// Get scroll position to avoid jumping to the top
scroll = document.body.scrollTop;
// Clean the url structure
themes.router.navigate( themes.router.baseUrl( '' ), { replace: true } );
// Restore scroll position
document.body.scrollTop = scroll;
// Return focus to the theme div
if ( themes.focusedTheme ) {
themes.focusedTheme.focus();
}
});
}
},
// Handles .disabled classes for next/previous buttons
navigation: function() {
// Disable Left/Right when at the start or end of the collection
if ( this.model.cid === this.model.collection.at(0).cid ) {
this.$el.find( '.left' ).addClass( 'disabled' );
}
if ( this.model.cid === this.model.collection.at( this.model.collection.length - 1 ).cid ) {
this.$el.find( '.right' ).addClass( 'disabled' );
}
},
// Performs the actions to effectively close
// the theme details overlay
closeOverlay: function() {
this.remove();
this.unbind();
this.trigger( 'theme:collapse' );
},
// Confirmation dialoge for deleting a theme
deleteTheme: function() {
return confirm( themes.data.settings.confirmDelete );
},
nextTheme: function() {
var self = this;
self.trigger( 'theme:next', self.model.cid );
},
previousTheme: function() {
var self = this;
self.trigger( 'theme:previous', self.model.cid );
},
// 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' );
}
}
});
// Controls the rendering of div.themes,
// a wrapper that will hold all the theme elements
themes.view.Themes = wp.Backbone.View.extend({
className: 'themes',
$overlay: $( 'div.theme-overlay' ),
// Number to keep track of scroll position
// while in theme-overlay mode
index: 0,
// The theme count element
count: $( '.theme-count' ),
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, 'update', function() {
self.parent.page = 0;
self.currentTheme();
self.render( this );
});
this.listenTo( this.parent, 'theme:scroll', function() {
self.renderThemes( self.parent.page );
});
// Bind keyboard events.
$('body').on( 'keyup', function( event ) {
if ( ! self.overlay ) {
return;
}
// Pressing the right arrow key fires a theme:next event
if ( event.keyCode === 39 ) {
self.overlay.nextTheme();
}
// Pressing the left arrow key fires a theme:previous event
if ( event.keyCode === 37 ) {
self.overlay.previousTheme();
}
// Pressing the escape key fires a theme:collapse event
if ( event.keyCode === 27 ) {
self.overlay.collapse( event );
}
});
},
// Manages rendering of theme pages
// and keeping theme count in sync
render: function() {
// Clear the DOM, please
this.$el.html( '' );
// 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
this.renderThemes( this.parent.page );
// Display a live theme count for the collection
this.count.text( this.collection.length );
},
// 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.length === 0 ) {
return;
}
// Make sure the add-new stays at the end
if ( page >= 1 ) {
$( '.add-new-theme' ).remove();
}
// Loop through the themes and setup each theme view
self.instance.each( function( theme ) {
self.theme = new themes.view.Theme({
model: theme
});
// Render the views...
self.theme.render();
// and append them to div.themes
self.$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.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><h3 class="theme-name">' + l10n.addNew + '</h3></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;
// 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( '?theme=' + this.model.id ), { replace: true } );
// Sets this.view to 'detail'
this.setView( 'detail' );
$( 'body' ).addClass( 'theme-overlay-open' );
// Set up the theme details view
this.overlay = new themes.view.Details({
model: self.model
});
this.overlay.render();
this.$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 );
// Sanity 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 );
}
}
});
// Search input view controller.
themes.view.Search = wp.Backbone.View.extend({
tagName: 'input',
className: 'theme-search',
id: 'theme-search-input',
attributes: {
placeholder: l10n.searchPlaceholder,
type: 'search'
},
events: {
'input': 'search',
'keyup': 'search',
'change': 'search',
'search': 'search'
},
// Runs a search on the theme collection.
search: function( event ) {
// Clear on escape.
if ( event.type === 'keyup' && event.which === 27 ) {
event.target.value = '';
}
this.collection.doSearch( event.target.value );
// Update the URL hash
if ( event.target.value ) {
themes.router.navigate( themes.router.baseUrl( '?search=' + event.target.value ), { replace: true } );
} else {
themes.router.navigate( themes.router.baseUrl( '' ), { replace: true } );
}
}
});
// Sets up the routes events for relevant url queries
// Listens to [theme] and [search] params
themes.routes = Backbone.Router.extend({
initialize: function() {
this.routes = _.object([
]);
},
baseUrl: function( url ) {
return themes.data.settings.root + url;
}
});
// 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();
},
render: function() {
// Render results
this.view.render();
this.routes();
// Set the initial theme
if ( 'undefined' !== typeof themes.data.settings.theme && '' !== themes.data.settings.theme ){
this.view.view.theme.trigger( 'theme:expand', this.view.collection.findWhere( { id: themes.data.settings.theme } ) );
}
// Set the initial search
if ( 'undefined' !== typeof themes.data.settings.search && '' !== themes.data.settings.search ){
$( '.theme-search' ).val( themes.data.settings.search );
this.themes.doSearch( themes.data.settings.search );
}
// Start the router if browser supports History API
if ( window.history && window.history.pushState ) {
// Calls the routes functionality
Backbone.history.start({ pushState: true, silent: true });
}
},
routes: function() {
// Bind to our global thx object
// so that the object is available to sub-views
themes.router = new themes.routes();
}
};
// Ready...
jQuery( document ).ready(
// Bring on the themes
_.bind( themes.Run.init, themes.Run )
);
})( jQuery );
// Align theme browser thickbox
var tb_position;
jQuery(document).ready( function($) {
tb_position = function() {
var tbWindow = $('#TB_window'),
width = $(window).width(),
H = $(window).height(),
W = ( 1040 < width ) ? 1040 : width,
adminbar_height = 0;
if ( $('body.admin-bar').length ) {
adminbar_height = parseInt( jQuery('#wpadminbar').css('height'), 10 );
}
if ( tbWindow.size() ) {
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).resize(function(){ tb_position(); });
});