Theme Installer: Caching and paginating of API requests.
props matveb. see #27055. Built from https://develop.svn.wordpress.org/trunk@27830 git-svn-id: http://core.svn.wordpress.org/trunk@27664 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Andrew Nacin
parent
2dac143048
commit
e96b783f69
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@ -213,6 +213,124 @@ themes.Collection = Backbone.Collection.extend({
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collection = _( collection.first( 20 ) );
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return collection;
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},
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// Handles requests for more themes
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// and caches results
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//
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// When we are missing a cache object we fire an apiCall()
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// which triggers events of `query:success` or `query:fail`
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query: function( request ) {
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/**
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* @static
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* @type Array
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*/
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var queries = this.queries,
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self = this,
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query, isPaginated, count;
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// Search the query cache for matches.
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query = _.find( queries, function( query ) {
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return _.isEqual( query.request, request );
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});
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// If the request matches the stored currentQuery.request
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// it means we have a paginated request.
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isPaginated = _.has( request, 'page' );
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// Reset the internal api page counter for non paginated queries.
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if ( ! isPaginated ) {
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this.currentQuery.page = 1;
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}
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// Otherwise, send a new API call and add it to the cache.
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if ( ! query ) {
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query = this.apiCall( request ).done( function( data ) {
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// Update the collection with the queried data.
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self.reset( data.themes );
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count = data.info.results;
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// Trigger a collection refresh event
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// and a `query:success` event with a `count` argument.
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self.trigger( 'update' );
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self.trigger( 'query:success', count );
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// Store the results and the query request
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queries.push( { themes: data.themes, request: request } );
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}).fail( function() {
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self.trigger( 'query:fail' );
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});
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} else {
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// If it's a paginated request we need to fetch more themes...
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if ( isPaginated ) {
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return this.apiCall( request, isPaginated ).done( function( data ) {
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// Add the new themes to the current collection
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// @todo update counter
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self.add( data.themes );
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self.trigger( 'query:success' );
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}).fail( function() {
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self.trigger( 'query:fail' );
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});
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}
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// Only trigger an update event since we already have the themes
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// on our cached object
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this.reset( query.themes );
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this.trigger( 'update' );
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}
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},
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// Local cache array for API queries
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queries: [],
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// Keep track of current query so we can handle pagination
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currentQuery: {
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page: 1,
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request: {}
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},
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// Send Ajax POST request to api.wordpress.org/themes
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apiCall: function( request, paginated ) {
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// Store current query request args
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// for later use with the event `theme:end`
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this.currentQuery.request = request;
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// Ajax request to .org API
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return $.ajax({
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url: 'https://api.wordpress.org/themes/info/1.1/?action=query_themes',
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// We want JSON data
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dataType: 'json',
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type: 'POST',
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crossDomain: true,
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// Request data
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data: {
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action: 'query_themes',
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request: _.extend({
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per_page: 72,
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fields: {
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description: true,
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tested: true,
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requires: true,
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rating: true,
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downloaded: true,
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downloadLink: true,
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last_updated: true,
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homepage: true,
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num_ratings: true
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}
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}, request)
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},
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beforeSend: function() {
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if ( ! paginated ) {
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// Spin it
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$( 'body' ).addClass( 'loading-themes' );
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}
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}
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});
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}
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});
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@ -571,6 +689,15 @@ themes.view.Themes = wp.Backbone.View.extend({
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self.render( this );
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});
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// Update theme count to full result set when available.
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this.listenTo( self.collection, 'query:success', function( count ) {
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if ( _.isNumber( count ) ) {
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self.count.text( count );
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} else {
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self.count.text( self.collection.length );
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}
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});
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this.listenTo( this.parent, 'theme:scroll', function() {
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self.renderThemes( self.parent.page );
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});
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@ -582,7 +709,7 @@ themes.view.Themes = wp.Backbone.View.extend({
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} );
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// Bind keyboard events.
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$('body').on( 'keyup', function( event ) {
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$( 'body' ).on( 'keyup', function( event ) {
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if ( ! self.overlay ) {
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return;
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}
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@ -628,7 +755,10 @@ themes.view.Themes = wp.Backbone.View.extend({
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// Generate the themes
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// Using page instance
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// While checking the collection has items
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if ( this.options.collection.size() > 0 ) {
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this.renderThemes( this.parent.page );
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}
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// Display a live theme count for the collection
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this.count.text( this.collection.length );
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@ -642,7 +772,9 @@ themes.view.Themes = wp.Backbone.View.extend({
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self.instance = self.collection.paginate( page );
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// If we have no more themes bail
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if ( self.instance.length === 0 ) {
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if ( self.instance.size() === 0 ) {
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// Fire a no-more-themes event.
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this.parent.trigger( 'theme:end' );
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return;
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}
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@ -967,7 +1099,7 @@ themes.view.InstallerSearch = themes.view.Search.extend({
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_.debounce( _.bind( this.doSearch, this ), 300 )( event.target.value );
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},
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doSearch: function( value ) {
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doSearch: _.debounce( function( value ) {
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var request = {},
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self = this;
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@ -991,23 +1123,10 @@ themes.view.InstallerSearch = themes.view.Search.extend({
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request.tag = [ value.slice( 4 ) ];
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}
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// Send Ajax POST request to api.wordpress.org/themes
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themes.view.Installer.prototype.apiCall( request ).done( function( data ) {
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// Update the collection with the queried data
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self.collection.reset( data.themes );
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// Trigger a collection refresh event to render the views
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self.collection.trigger( 'update' );
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// Un-spin it
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$( 'body' ).removeClass( 'loading-themes' );
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$( '.theme-browser' ).find( 'div.error' ).remove();
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}).fail( function() {
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$( '.theme-browser' ).find( 'div.error' ).remove();
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$( '.theme-browser' ).append( '<div class="error"><p>' + l10n.error + '</p></div>' );
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});
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return false;
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}
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// Get the themes by sending Ajax POST request to api.wordpress.org/themes
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// or searching the local cache
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this.collection.query( request );
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}, 300 ),
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});
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themes.view.Installer = themes.view.Appearance.extend({
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@ -1022,62 +1141,33 @@ themes.view.Installer = themes.view.Appearance.extend({
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'click [type="checkbox"]': 'addFilter'
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},
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// Send Ajax POST request to api.wordpress.org/themes
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apiCall: function( request ) {
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return $.ajax({
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url: 'https://api.wordpress.org/themes/info/1.1/?action=query_themes',
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// We want JSON data
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dataType: 'json',
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type: 'POST',
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crossDomain: true,
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// Request data
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data: {
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action: 'query_themes',
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request: _.extend({
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per_page: 36,
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fields: {
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description: true,
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tested: true,
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requires: true,
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rating: true,
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downloaded: true,
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downloadLink: true,
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last_updated: true,
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homepage: true,
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num_ratings: true
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}
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}, request)
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},
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beforeSend: function() {
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// Spin it
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$( 'body' ).addClass( 'loading-themes' );
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}
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});
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},
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// Handles all the rendering of the public theme directory
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browse: function( section ) {
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var self = this;
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// @todo Cache the collection after fetching based on the section
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this.collection = new themes.Collection();
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// Create a new collection with the proper theme data
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// for each section
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this.apiCall({ browse: section }).done( function( data ) {
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// Update the collection with the queried data
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self.collection.reset( data.themes );
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// Trigger a collection refresh event to render the views
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self.collection.trigger( 'update' );
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// Bump `collection.currentQuery.page` and request more themes if we hit the end of the page.
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this.listenTo( this, 'theme:end', function() {
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self.collection.currentQuery.page++;
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_.extend( self.collection.currentQuery.request, { page: self.collection.currentQuery.page } );
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self.collection.query( self.collection.currentQuery.request );
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});
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// Un-spin it
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this.listenTo( this.collection, 'query:success', function() {
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$( 'body' ).removeClass( 'loading-themes' );
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$( '.theme-browser' ).find( 'div.error' ).remove();
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});
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this.listenTo( this.collection, 'query:fail', function() {
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$( '.theme-browser' ).find( 'div.error' ).remove();
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$( '.theme-browser' ).append( '<div class="error"><p>' + l10n.error + '</p></div>' );
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});
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// Create a new collection with the proper theme data
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// for each section
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this.collection.query( { browse: section } );
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if ( this.view ) {
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this.view.remove();
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}
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@ -1153,27 +1243,12 @@ themes.view.Installer = themes.view.Appearance.extend({
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// Construct the filter request
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// using the default values
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// @todo Cache the collection after fetching based on the filter
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filter = _.union( filter, this.filtersChecked() );
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request = { tag: [ filter ] };
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// Send Ajax POST request to api.wordpress.org/themes
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this.apiCall( request ).done( function( data ) {
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// Update the collection with the queried data
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self.collection.reset( data.themes );
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// Trigger a collection refresh event to render the views
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self.collection.trigger( 'update' );
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// Un-spin it
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$( 'body' ).removeClass( 'loading-themes' );
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$( '.theme-browser' ).find( 'div.error' ).remove();
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}).fail( function() {
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$( '.theme-browser' ).find( 'div.error' ).remove();
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$( '.theme-browser' ).append( '<div class="error"><p>' + l10n.error + '</p></div>' );
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});
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return false;
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// Get the themes by sending Ajax POST request to api.wordpress.org/themes
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// or searching the local cache
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this.collection.query( request );
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},
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// Clicking on a checkbox triggers a tag request
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@ -1182,20 +1257,9 @@ themes.view.Installer = themes.view.Appearance.extend({
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tags = this.filtersChecked(),
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request = { tag: tags };
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// Send Ajax POST request to api.wordpress.org/themes
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this.apiCall( request ).done( function( data ) {
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// Update the collection with the queried data
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self.collection.reset( data.themes );
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// Trigger a collection refresh event to render the views
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self.collection.trigger( 'update' );
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// Un-spin it
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$( 'body' ).removeClass( 'loading-themes' );
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$( '.theme-browser' ).find( 'div.error' ).remove();
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}).fail( function() {
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$( '.theme-browser' ).find( 'div.error' ).remove();
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$( '.theme-browser' ).append( '<div class="error"><p>' + l10n.error + '</p></div>' );
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});
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// Get the themes by sending Ajax POST request to api.wordpress.org/themes
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// or searching the local cache
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this.collection.query( request );
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},
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// Get the checked filters and return an array
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