1 files changed, 107 insertions, 0 deletions
diff --git a/www/wiki/resources/src/mediawiki.messagePoster/mediawiki.messagePoster.factory.js b/www/wiki/resources/src/mediawiki.messagePoster/mediawiki.messagePoster.factory.js
new file mode 100644
index 00000000..e20b422f
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+++ b/www/wiki/resources/src/mediawiki.messagePoster/mediawiki.messagePoster.factory.js
@@ -0,0 +1,107 @@
+( function ( mw, $ ) {
+	/**
+	 * Factory for MessagePoster objects. This provides a pluggable to way to script the action
+	 * of adding a message to someone's talk page.
+	 *
+	 * @class mw.messagePoster.factory
+	 * @singleton
+	 */
+	function MessagePosterFactory() {
+		this.contentModelToClass = {};
+	}
+
+	OO.initClass( MessagePosterFactory );
+
+	// Note: This registration scheme is currently not compatible with LQT, since that doesn't
+	// have its own content model, just islqttalkpage. LQT pages will be passed to the wikitext
+	// MessagePoster.
+	/**
+	 * Register a MessagePoster subclass for a given content model.
+	 *
+	 * @param {string} contentModel Content model of pages this MessagePoster can post to
+	 * @param {Function} constructor Constructor of a MessagePoster subclass
+	 */
+	MessagePosterFactory.prototype.register = function ( contentModel, constructor ) {
+		if ( this.contentModelToClass[ contentModel ] !== undefined ) {
+			throw new Error( 'Content model "' + contentModel + '" is already registered' );
+		}
+
+		this.contentModelToClass[ contentModel ] = constructor;
+	};
+
+	/**
+	 * Unregister a given content model.
+	 * This is exposed for testing and should not normally be used.
+	 *
+	 * @param {string} contentModel Content model to unregister
+	 */
+	MessagePosterFactory.prototype.unregister = function ( contentModel ) {
+		delete this.contentModelToClass[ contentModel ];
+	};
+
+	/**
+	 * Create a MessagePoster for given a title.
+	 *
+	 * A promise for this is returned. It works by determining the content model, then loading
+	 * the corresponding module (which registers the MessagePoster class), and finally constructing
+	 * an object for the given title.
+	 *
+	 * This does not require the message and should be called as soon as possible, so that the
+	 * API and ResourceLoader requests run in the background.
+	 *
+	 * @param {mw.Title} title Title that will be posted to
+	 * @param {string} [apiUrl] api.php URL if the title is on another wiki
+	 * @return {jQuery.Promise} Promise resolving to a mw.messagePoster.MessagePoster.
+	 *   For failure, rejected with up to three arguments:
+	 *
+	 *   - errorCode Error code string
+	 *   - error Error explanation
+	 *   - details Further error details
+	 */
+	MessagePosterFactory.prototype.create = function ( title, apiUrl ) {
+		var factory = this,
+			api = apiUrl ? new mw.ForeignApi( apiUrl ) : new mw.Api();
+
+		return api.get( {
+			formatversion: 2,
+			action: 'query',
+			prop: 'info',
+			titles: title.getPrefixedDb()
+		} ).then( function ( data ) {
+			var contentModel, moduleName, page = data.query.pages[ 0 ];
+			if ( !page ) {
+				return $.Deferred().reject( 'unexpected-response', 'Unexpected API response' );
+			}
+			contentModel = page.contentmodel;
+			moduleName = 'mediawiki.messagePoster.' + contentModel;
+			return mw.loader.using( moduleName ).then( function () {
+				return factory.createForContentModel(
+					contentModel,
+					title,
+					api
+				);
+			}, function () {
+				return $.Deferred().reject( 'failed-to-load-module', 'Failed to load "' + moduleName + '"' );
+			} );
+		}, function ( error, details ) {
+			return $.Deferred().reject( 'content-model-query-failed', error, details );
+		} );
+	};
+
+	/**
+	 * Creates a MessagePoster instance, given a title and content model
+	 *
+	 * @private
+	 * @param {string} contentModel Content model of title
+	 * @param {mw.Title} title Title being posted to
+	 * @param {mw.Api} api mw.Api instance that the instance should use
+	 * @return {mw.messagePoster.MessagePoster}
+	 */
+	MessagePosterFactory.prototype.createForContentModel = function ( contentModel, title, api ) {
+		return new this.contentModelToClass[ contentModel ]( title, api );
+	};
+
+	mw.messagePoster = {
+		factory: new MessagePosterFactory()
+	};
+}( mediaWiki, jQuery ) );