/**

 * @license Copyright (c) 2003-2013, CKSource - Frederico Knabben. All rights reserved.

 * For licensing, see LICENSE.md or http://ckeditor.com/license

 */



/**

 * @fileOverview Defines the {@link CKEDITOR.plugins} object, which is used to

 *		manage plugins registration and loading.

 */



/**

 * Manages plugins registration and loading.

 *

 * @class

 * @extends CKEDITOR.resourceManager

 * @singleton

 */

CKEDITOR.plugins = new CKEDITOR.resourceManager( 'plugins/', 'plugin' );



// PACKAGER_RENAME( CKEDITOR.plugins )



CKEDITOR.plugins.load = CKEDITOR.tools.override( CKEDITOR.plugins.load, function( originalLoad ) {

	var initialized = {};



	return function( name, callback, scope ) {

		var allPlugins = {};



		var loadPlugins = function( names ) {

				originalLoad.call( this, names, function( plugins ) {

					CKEDITOR.tools.extend( allPlugins, plugins );



					var requiredPlugins = [];

					for ( var pluginName in plugins ) {

						var plugin = plugins[ pluginName ],

							requires = plugin && plugin.requires;



						if ( !initialized[ pluginName ] ) {

							// Register all icons eventually defined by this plugin.

							if ( plugin.icons ) {

								var icons = plugin.icons.split( ',' );

								for ( var ic = icons.length; ic--; ) {

									CKEDITOR.skin.addIcon( icons[ ic ],

										plugin.path +

										'icons/' +

										( CKEDITOR.env.hidpi && plugin.hidpi ? 'hidpi/' : '' ) +

										icons[ ic ] +

										'.png' );

								}

							}

							initialized[ pluginName ] = 1;

						}



						if ( requires ) {

							// Trasnform it into an array, if it's not one.

							if ( requires.split )

								requires = requires.split( ',' );



							for ( var i = 0; i < requires.length; i++ ) {

								if ( !allPlugins[ requires[ i ] ] )

									requiredPlugins.push( requires[ i ] );

							}

						}

					}



					if ( requiredPlugins.length )

						loadPlugins.call( this, requiredPlugins );

					else {

						// Call the "onLoad" function for all plugins.

						for ( pluginName in allPlugins ) {

							plugin = allPlugins[ pluginName ];

							if ( plugin.onLoad && !plugin.onLoad._called ) {

								// Make it possible to return false from plugin::onLoad to disable it.

								if ( plugin.onLoad() === false )

									delete allPlugins[ pluginName ];



								plugin.onLoad._called = 1;

							}

						}



						// Call the callback.

						if ( callback )

							callback.call( scope || window, allPlugins );

					}

				}, this );



			};



		loadPlugins.call( this, name );

	};

});



/**

 * Loads a specific language file, or auto detect it. A callback is

 * then called when the file gets loaded.

 *

 *		CKEDITOR.plugins.setLang( 'myPlugin', 'en', {

 *			title: 'My plugin',

 *			selectOption: 'Please select an option'

 *		} );

 *

 * @param {String} pluginName The name of the plugin to which the provided translation

 * should be attached.

 * @param {String} languageCode The code of the language translation provided.

 * @param {Object} languageEntries An object that contains pairs of label and

 * the respective translation.

 */

CKEDITOR.plugins.setLang = function( pluginName, languageCode, languageEntries ) {

	var plugin = this.get( pluginName ),

		pluginLangEntries = plugin.langEntries || ( plugin.langEntries = {} ),

		pluginLang = plugin.lang || ( plugin.lang = [] );



	if ( pluginLang.split )

		pluginLang = pluginLang.split( ',' );



	if ( CKEDITOR.tools.indexOf( pluginLang, languageCode ) == -1 )

		pluginLang.push( languageCode );



	pluginLangEntries[ languageCode ] = languageEntries;

};