Current File : /www/varak.net/wiki.varak.net/extensions/MultimediaViewer/resources/mmv.bootstrap/mmv.Config.js
/*
* This file is part of the MediaWiki extension MediaViewer.
*
* MediaViewer is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* MediaViewer is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with MediaViewer. If not, see <http://www.gnu.org/licenses/>.
*/
( function ( mw, $ ) {
var CP;
/**
* Contains/retrieves configuration/environment information for MediaViewer.
* @class mw.mmv.Config
* @constructor
* @param {Object} viewerConfig
* @param {mw.Map} mwConfig
* @param {Object} mwUser
* @param {mw.Api} api
* @param {mw.SafeStorage} localStorage
*/
function Config( viewerConfig, mwConfig, mwUser, api, localStorage ) {
/**
* A plain object storing MediaViewer-specific settings
* @type {Object}
*/
this.viewerConfig = viewerConfig;
/**
* The mw.config object, for dependency injection
* @type {mw.Map}
*/
this.mwConfig = mwConfig;
/**
* mw.user object, for dependency injection
* @type {Object}
*/
this.mwUser = mwUser;
/**
* API object, for dependency injction
* @type {mw.Api}
*/
this.api = api;
/**
* The localStorage object, for dependency injection
* @type {mw.SafeStorage}
*/
this.localStorage = localStorage;
}
CP = Config.prototype;
/**
* Get value from local storage or fail gracefully.
*
* @param {string} key
* @param {*} [fallback] value to return when key is not set or localStorage is not supported
* @return {string|null} stored value or fallback or null if neither exists
*/
CP.getFromLocalStorage = function ( key, fallback ) {
var value = this.localStorage.get( key );
// localStorage will only store strings; if values `null`, `false` or
// `0` are set, they'll come out as `"null"`, `"false"` or `"0"`, so we
// can be certain that an actual null is a failure to locate the item,
// and false is an issue with localStorage itself
if ( value !== null && value !== false ) {
return value;
}
if ( value === null ) {
mw.log( 'Failed to fetch item ' + key + ' from localStorage' );
}
return fallback !== undefined ? fallback : null;
};
/**
* Set item in local storage or fail gracefully.
*
* @param {string} key
* @param {*} value
* @return {boolean} whether storing the item was successful
*/
CP.setInLocalStorage = function ( key, value ) {
return this.localStorage.set( key, value );
};
/**
* Remove item from local storage or fail gracefully.
*
* @param {string} key
* @return {boolean} whether storing the item was successful
*/
CP.removeFromLocalStorage = function ( key ) {
this.localStorage.remove( key );
// mw.storage.remove catches all exceptions and returns false if any
// occur, so we can't distinguish between actual issues, and
// localStorage not being supported - however, localStorage.removeItem
// is not documented to throw any errors, so nothing to worry about;
// when localStorage is not supported, we'll consider removal successful
// (it can't have been there in the first place)
return true;
};
/**
* Set user preference via AJAX
*
* @param {string} key
* @param {string} value
* @return {jQuery.Promise} a deferred which resolves/rejects on success/failure respectively
*/
CP.setUserPreference = function ( key, value ) {
return this.api.saveOption( key, value );
};
/**
* Returns true if MediaViewer should handle thumbnail clicks.
*
* @return {boolean}
*/
CP.isMediaViewerEnabledOnClick = function () {
// IMPORTANT: mmv.head.js uses the same logic but does not use this class to be lightweight. Make sure to keep it in sync.
return this.mwConfig.get( 'wgMediaViewer' ) && // global opt-out switch, can be set in user JS
this.mwConfig.get( 'wgMediaViewerOnClick' ) && // thumbnail opt-out, can be set in preferences
( !this.mwUser.isAnon() || this.getFromLocalStorage( 'wgMediaViewerOnClick', '1' ) === '1' ); // thumbnail opt-out for anons
};
/**
* (Semi-)permanently stores the setting whether MediaViewer should handle thumbnail clicks.
* - for logged-in users, we use preferences
* - for anons, we use localStorage
* - for anons with old browsers, we don't do anything
*
* @param {boolean} enabled
* @return {jQuery.Promise} a deferred which resolves/rejects on success/failure respectively
*/
CP.setMediaViewerEnabledOnClick = function ( enabled ) {
var deferred,
newPrefValue,
defaultPrefValue = this.mwConfig.get( 'wgMediaViewerEnabledByDefault' ),
config = this,
success = true;
if ( this.mwUser.isAnon() ) {
if ( !enabled ) {
success = this.setInLocalStorage( 'wgMediaViewerOnClick', '0' ); // localStorage stringifies everything, best use strings in the first place
} else {
success = this.removeFromLocalStorage( 'wgMediaViewerOnClick' );
}
if ( success ) {
deferred = $.Deferred().resolve();
} else {
deferred = $.Deferred().reject();
}
} else {
// Simulate changing the option in Special:Preferences. Turns out this is quite hard (bug 69942):
// we need to delete the user_properties row if the new setting is the same as the default,
// otherwise set '1' for enabled, '' for disabled. In theory the pref API will delete the row
// if the new value equals the default, but this does not always work.
if ( defaultPrefValue === true ) {
newPrefValue = enabled ? '1' : '';
} else {
// undefined will cause the API call to omit the optionvalue parameter
// which in turn will cause the options API to delete the row and revert the pref to default
newPrefValue = enabled ? '1' : undefined;
}
deferred = this.setUserPreference( 'multimediaviewer-enable', newPrefValue );
}
return deferred.done( function () {
// make the change work without a reload
config.mwConfig.set( 'wgMediaViewerOnClick', enabled );
if ( !enabled ) {
// set flag for showing a popup if this was a first-time disable
config.maybeEnableStatusInfo();
}
} );
};
/**
* True if info about enable/disable status should be displayed (mingle #719).
*
* @return {boolean}
*/
CP.shouldShowStatusInfo = function () {
return !this.isMediaViewerEnabledOnClick() && this.getFromLocalStorage( 'mmv-showStatusInfo' ) === '1';
};
/**
* Called when MediaViewer is disabled. If status info was never displayed before, future
* shouldShowStatusInfo() calls will return true.
*
* @private
*/
CP.maybeEnableStatusInfo = function () {
var currentShowStatusInfo = this.getFromLocalStorage( 'mmv-showStatusInfo' );
if ( currentShowStatusInfo === null ) {
this.setInLocalStorage( 'mmv-showStatusInfo', '1' );
}
};
/**
* Called when status info is displayed. Future shouldShowStatusInfo() calls will retrurn false.
*/
CP.disableStatusInfo = function () {
this.setInLocalStorage( 'mmv-showStatusInfo', '0' );
};
/**
* Returns file extensions handled by Media Viewer.
*
* The object's keys are the file extensions.
* The object's values are either 'default' when Media Viewer handles that file extension
* directly or the name of a ResourceLoader module to load when such a file is opened.
*
* @return {Object}
*/
CP.extensions = function () {
return this.viewerConfig.extensions;
};
/**
* Returns UI language
*
* @return {string} Language code
*/
CP.language = function () {
return this.mwConfig.get( 'wgUserLanguage', false ) || this.mwConfig.get( 'wgContentLanguage', 'en' );
};
/**
* Returns URI of virtual view beacon or false if not set
*
* @return {string|boolean} URI
*/
CP.recordVirtualViewBeaconURI = function () {
return this.viewerConfig.recordVirtualViewBeaconURI;
};
/**
* Returns useThumbnailGuessing flag
*
* @return {boolean}
*/
CP.useThumbnailGuessing = function () {
return this.viewerConfig.useThumbnailGuessing;
};
/**
* Returns imageQueryParameter, if set
*
* @return {string|boolean}
*/
CP.imageQueryParameter = function () {
return this.viewerConfig.imageQueryParameter;
};
mw.mmv.Config = Config;
}( mediaWiki, jQuery ) );
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