mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/WikiEditor
synced 2024-12-21 04:14:47 +00:00
588 lines
20 KiB
JavaScript
588 lines
20 KiB
JavaScript
/**
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* This plugin provides a way to build a wiki-text editing user interface around a textarea.
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*
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* @example To initialize without any modules,
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* overqualified `div#edittoolbar` to avoid MediaWiki's heading to id automatism:
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* $( 'div#edittoolbar' ).wikiEditor();
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*
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* @example To initialize with one or more modules, or to add modules after it's already been initialized:
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* $( 'textarea#wpTextbox1' ).wikiEditor( 'addModule', 'toolbar', { ... config ... } );
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*/
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/**
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* @private
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*/
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const hasOwn = Object.prototype.hasOwnProperty,
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/**
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* Array of language codes.
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*
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* @private
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*/
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fallbackChain = ( function () {
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// eslint-disable-next-line no-jquery/no-class-state
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const isRTL = $( document.body ).hasClass( 'rtl' ),
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chain = mw.language.getFallbackLanguageChain();
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// Do not fallback to 'en'
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if ( chain.length >= 2 && !/^en-/.test( chain[ chain.length - 2 ] ) ) {
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chain.pop();
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}
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if ( isRTL ) {
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chain.push( 'default-rtl' );
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}
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chain.push( 'default' );
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return chain;
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}() );
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/**
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* Helper function to mark the automatic message functionality in
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* the autoMsg and autoSafeMsg functions as deprecated.
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*
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* @private
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* @param {string} property
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* @param {string} key
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*/
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function deprecateAutoMsg( property, key ) {
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const searchParam = mw.config.get( 'wgSearchType' ) === 'CirrusSearch' ?
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'insource:/' + property + 'Msg: \'' + key + '\'/' :
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property + 'Msg: ' + key;
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let searchUri = mw.config.get( 'wgServer' ) +
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mw.util.getUrl(
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'Special:Search',
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{ search: searchParam, ns2: 1, ns8: 1 }
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);
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if ( searchUri.slice( 0, 2 ) === '//' ) {
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searchUri = location.protocol + searchUri;
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}
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let messageMethod;
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if ( property === 'html' || property === 'text' || property === 'title' ) {
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messageMethod = 'mw.message( ' + JSON.stringify( key ) + ' ).parse()';
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} else {
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messageMethod = 'mw.msg( ' + JSON.stringify( key ) + ' )';
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}
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const deprecationMsg = mw.log.makeDeprecated(
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'wikiEditor_autoMsg',
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'WikiEditor: Use `' + property + ': ' + messageMethod + '` instead of `' + property + 'Msg: ' + JSON.stringify( key ) + '`.\nSearch: ' + searchUri
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);
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deprecationMsg();
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}
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/**
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* Global static object for wikiEditor that provides generally useful functionality to all modules and contexts.
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*/
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$.wikiEditor = {
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/**
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* For each module that is loaded, static code shared by all instances is loaded into this object organized by
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* module name. The existence of a module in this object only indicates the module is available. To check if a
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* module is in use by a specific context check the context.modules object.
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*/
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modules: {
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toolbar: require( './jquery.wikiEditor.toolbar.js' ),
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dialogs: require( './jquery.wikiEditor.dialogs.js' )
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},
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/**
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* A context can be extended, such as adding iframe support, on a per-wikiEditor instance basis.
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*/
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extensions: {},
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/**
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* In some cases like with the iframe's HTML file, it's convenient to have a lookup table of all instances of the
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* WikiEditor. Each context contains an instance field which contains a key that corresponds to a reference to the
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* textarea which the WikiEditor was build around. This way, by passing a simple integer you can provide a way back
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* to a specific context.
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*/
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instances: [],
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/**
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* Path to images - this is a bit messy, and it would need to change if this code (and images) gets moved into the
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* core - or anywhere for that matter...
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*/
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imgPath: mw.config.get( 'wgExtensionAssetsPath' ) + '/WikiEditor/modules/images/',
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/**
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* Checks if a module has a specific requirement
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*
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* @param {Object} module Module object
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* @param {string} requirement String identifying requirement
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* @return {boolean}
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*/
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isRequired: function ( module, requirement ) {
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if ( typeof module.req !== 'undefined' ) {
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for ( const req in module.req ) {
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if ( module.req[ req ] === requirement ) {
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return true;
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}
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}
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}
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return false;
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},
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/**
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* Provides a way to extract messages from objects. Wraps a mw.message( ... ).text() call.
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*
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* FIXME: This is a security nightmare. Only use is for the help toolbar panel. Inline the
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* special need instead?
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* FIXME: Also, this is ludicrously complex. Just use mw.message().text() directly.
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*
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* @deprecated Since v0.5.4. Use mw.message() directly instead of <key>Msg
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*
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* @param {Object} object Object to extract messages from
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* @param {string} property String of name of property which contains the message. This should be the base name of the
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* property, which means that in the case of the object { this: 'that', fooMsg: 'bar' }, passing property as 'this'
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* would return the raw text 'that', while passing property as 'foo' would return the internationalized message
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* with the key 'bar'.
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* @return {string}
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*/
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autoMsg: function ( object, property ) {
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// Accept array of possible properties, of which the first one found will be used
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if ( typeof property === 'object' ) {
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for ( const i in property ) {
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if ( property[ i ] in object || property[ i ] + 'Msg' in object ) {
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property = property[ i ];
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break;
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}
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}
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}
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if ( property in object ) {
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return object[ property ];
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} else if ( property + 'Msg' in object ) {
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const p = object[ property + 'Msg' ];
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if ( Array.isArray( p ) && p.length >= 2 ) {
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deprecateAutoMsg( property, p[ 0 ] );
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return mw.message.apply( mw.message, p ).text();
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} else {
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deprecateAutoMsg( property, p );
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// eslint-disable-next-line mediawiki/msg-doc
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return mw.message( p ).text();
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}
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} else {
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return '';
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}
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},
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/**
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* Provides a way to extract messages from objects. Wraps a mw.message( ... ).escaped() call.
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*
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* FIXME: This is ludicrously complex. Just use mw.message().escaped() directly.
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*
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* @deprecated Since v0.5.4. Use mw.message() directly instead of <key>Msg
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*
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* @param {Object} object Object to extract messages from
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* @param {string} property String of name of property which contains the message. This should be the base name of the
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* property, which means that in the case of the object { this: 'that', fooMsg: 'bar' }, passing property as 'this'
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* would return the raw text 'that', while passing property as 'foo' would return the internationalized message
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* with the key 'bar'. This is then escaped.
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* @return {string}
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*/
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autoSafeMsg: function ( object, property ) {
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// Accept array of possible properties, of which the first one found will be used
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if ( typeof property === 'object' ) {
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for ( const i in property ) {
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if ( property[ i ] in object || property[ i ] + 'Msg' in object ) {
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property = property[ i ];
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break;
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}
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}
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}
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if ( property in object ) {
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return object[ property ];
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} else if ( property + 'Msg' in object ) {
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const p = object[ property + 'Msg' ];
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if ( Array.isArray( p ) && p.length >= 2 ) {
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deprecateAutoMsg( property, p[ 0 ] );
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return mw.message.apply( mw.message, p ).escaped();
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} else {
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deprecateAutoMsg( property, p );
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// eslint-disable-next-line mediawiki/msg-doc
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return mw.message( p ).escaped();
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}
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} else {
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return '';
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}
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},
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/**
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* Provides a way to extract a property of an object in a certain language, falling back on the property keyed as
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* 'default' or 'default-rtl'. If such key doesn't exist, the object itself is considered the actual value, which
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* should ideally be the case so that you may use a string or object of any number of strings keyed by language
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* with a default.
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*
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* @param {Object} object Object to extract property from
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* @return {Object}
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*/
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autoLang: function ( object ) {
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for ( let i = 0; i < fallbackChain.length; i++ ) {
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const key = fallbackChain[ i ];
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if ( hasOwn.call( object, key ) ) {
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return object[ key ];
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}
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}
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return object;
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},
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/**
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* Provides a way to extract the path of an icon in a certain language, automatically appending a version number for
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* caching purposes and prepending an image path when icon paths are relative.
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*
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* @param {Object} icon Icon object from e.g. toolbar config
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* @param {string} path Default icon path, defaults to $.wikiEditor.imgPath
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* @return {Object}
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*/
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autoIcon: function ( icon, path ) {
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path = path || $.wikiEditor.imgPath;
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for ( let i = 0; i < fallbackChain.length; i++ ) {
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const key = fallbackChain[ i ];
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if ( icon && hasOwn.call( icon, key ) ) {
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let src = icon[ key ];
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// Return a data URL immediately
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if ( src.slice( 0, 5 ) === 'data:' ) {
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return src;
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}
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// Prepend path if src is not absolute
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if ( src.slice( 0, 7 ) !== 'http://' && src.slice( 0, 8 ) !== 'https://' && src[ 0 ] !== '/' ) {
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src = path + src;
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}
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return src;
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}
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}
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return icon;
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}
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};
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/**
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* jQuery plugin that provides a way to initialize a wikiEditor instance on a textarea.
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*
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* @return {jQuery}
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*/
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$.fn.wikiEditor = function () {
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/* Initialization */
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// The wikiEditor context is stored in the element's data, so when this function gets called again we can pick up right
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// where we left off
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let context = $( this ).data( 'wikiEditor-context' );
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// On first call, we need to set things up, but on all following calls we can skip right to the API handling
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if ( !context ) {
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// Star filling the context with useful data - any jQuery selections, as usual should be named with a preceding $
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context = {
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// Reference to the textarea element which the wikiEditor is being built around
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$textarea: $( this ),
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// Reference to the focused element before the dialog opens, so it can be restored once it closes
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$focusedElem: null,
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// Container for any number of mutually exclusive views that are accessible by tabs
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views: {},
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// Container for any number of module-specific data - only including data for modules in use on this context
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modules: {},
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// General place to shove bits of data into
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data: {},
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// Unique numeric ID of this instance used both for looking up and differentiating instances of wikiEditor
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instance: $.wikiEditor.instances.push( $( this ) ) - 1,
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// Saved selection state for old IE (<=10)
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savedSelection: null,
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// List of extensions active on this context
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extensions: []
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};
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/**
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* Externally Accessible API
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*
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* These are available using calls to $( selection ).wikiEditor( call, data ) where selection is a jQuery selection
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* of the textarea that the wikiEditor instance was built around.
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*/
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context.api = {
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/*!
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* Activates a module on a specific context with optional configuration data.
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*
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* @param data Either a string of the name of a module to add without any additional configuration parameters,
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* or an object with members keyed with module names and valued with configuration objects.
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*/
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addModule: function ( ctx, data ) {
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let modules = {};
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if ( typeof data === 'string' ) {
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modules[ data ] = {};
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} else if ( typeof data === 'object' ) {
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modules = data;
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}
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for ( const module in modules ) {
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// Check for the existence of an available module with a matching name and a create function
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if ( typeof module === 'string' && typeof $.wikiEditor.modules[ module ] !== 'undefined' ) {
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// Extend the context's core API with this module's own API calls
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if ( 'api' in $.wikiEditor.modules[ module ] ) {
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for ( const call in $.wikiEditor.modules[ module ].api ) {
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// Modules may not overwrite existing API functions - first come, first serve
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if ( !( call in ctx.api ) ) {
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ctx.api[ call ] = $.wikiEditor.modules[ module ].api[ call ];
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}
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}
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}
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// Activate the module on this context
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if ( 'fn' in $.wikiEditor.modules[ module ] &&
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'create' in $.wikiEditor.modules[ module ].fn &&
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typeof ctx.modules[ module ] === 'undefined'
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) {
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// Add a place for the module to put it's own stuff
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ctx.modules[ module ] = {};
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// Tell the module to create itself on the context
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$.wikiEditor.modules[ module ].fn.create( ctx, modules[ module ] );
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}
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}
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}
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}
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};
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/**
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* Event Handlers
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*
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* These act as filters returning false if the event should be ignored or returning true if it should be passed
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* on to all modules. This is also where we can attach some extra information to the events.
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*/
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context.evt = {
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/* Empty until extensions add some; see jquery.wikiEditor.iframe.js for examples. */
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};
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/* Internal Functions */
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context.fn = {
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/**
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* Executes core event filters as well as event handlers provided by modules.
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*
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* @param {string} name
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* @param {Object} event
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* @return {boolean}
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*/
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trigger: function ( name, event ) {
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// Event is an optional argument, but from here on out, at least the type field should be dependable
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event = event || { type: 'custom' };
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// Ensure there's a place for extra information to live
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event.data = event.data || {};
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// Allow filtering to occur
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if ( name in context.evt ) {
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if ( !context.evt[ name ]( event ) ) {
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return false;
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}
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}
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let returnFromModules = true;
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// Pass the event around to all modules activated on this context
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for ( const module in context.modules ) {
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if (
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module in $.wikiEditor.modules &&
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'evt' in $.wikiEditor.modules[ module ] &&
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name in $.wikiEditor.modules[ module ].evt
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) {
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const ret = $.wikiEditor.modules[ module ].evt[ name ]( context, event );
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if ( ret !== null ) {
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// if 1 returns false, the end result is false
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returnFromModules = returnFromModules && ret;
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}
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}
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}
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return returnFromModules;
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},
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/**
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* Adds a button to the UI
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*
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* @param {Object} options
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* @return {jQuery}
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*/
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addButton: function ( options ) {
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// Ensure that buttons and tabs are visible
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context.$controls.show();
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context.$buttons.show();
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return $( '<button>' )
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.text( $.wikiEditor.autoMsg( options, 'caption' ) )
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.on( 'click', options.action )
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.appendTo( context.$buttons );
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},
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/**
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* Adds a view to the UI, which is accessed using a set of tabs. Views are mutually exclusive and by default a
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* wikitext view will be present. Only when more than one view exists will the tabs will be visible.
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*
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* @param {Object} options
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* @return {jQuery}
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*/
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addView: function ( options ) {
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// Adds a tab
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function addTab( opts ) {
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// Ensure that buttons and tabs are visible
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context.$controls.show();
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context.$tabs.show();
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// Return the newly appended tab
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return $( '<div>' )
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.attr( 'rel', 'wikiEditor-ui-view-' + opts.name )
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.addClass( context.view === opts.name ? 'current' : null )
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.append( $( '<a>' )
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.attr( 'tabindex', 0 )
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// No dragging!
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.on( 'mousedown', () => false )
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.on( 'click keydown', ( event ) => {
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if (
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event.type === 'click' ||
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event.type === 'keydown' && event.key === 'Enter'
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) {
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context.$ui.find( '.wikiEditor-ui-view' ).hide();
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context.$ui.find( '.' + $( event.target ).parent().attr( 'rel' ) ).show();
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context.$tabs.find( 'div' ).removeClass( 'current' );
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$( event.target ).parent().addClass( 'current' );
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$( event.target ).trigger( 'blur' );
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if ( 'init' in opts && typeof opts.init === 'function' ) {
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opts.init( context );
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}
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event.preventDefault();
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return false;
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}
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} )
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.text( $.wikiEditor.autoMsg( opts, 'title' ) )
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)
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.appendTo( context.$tabs );
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}
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// Automatically add the previously not-needed wikitext tab
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if ( !context.$tabs.children().length ) {
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addTab( { name: 'wikitext', title: mw.message( 'wikieditor-wikitext-tab' ).parse() } );
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}
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// Add the tab for the view we were actually asked to add
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addTab( options );
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// Return newly appended view
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// eslint-disable-next-line mediawiki/class-doc
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return $( '<div>' )
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.addClass( 'wikiEditor-ui-view wikiEditor-ui-view-' + options.name )
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.hide()
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.appendTo( context.$ui );
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},
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/**
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* Save text selection
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*/
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saveSelection: function () {
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context.$focusedElem = $( ':focus' );
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context.$textarea.trigger( 'focus' );
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context.savedSelection = context.$textarea.textSelection( 'getCaretPosition', { startAndEnd: true } );
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},
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/**
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* Restore text selection
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*/
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restoreSelection: function () {
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if ( context.savedSelection ) {
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context.$textarea.trigger( 'focus' );
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context.$textarea.textSelection( 'setSelection', { start: context.savedSelection[ 0 ], end: context.savedSelection[ 1 ] } );
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context.savedSelection = null;
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}
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if ( context.$focusedElem ) {
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context.$focusedElem.trigger( 'focus' );
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}
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}
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};
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/**
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* Base UI Construction
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*
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* The UI is built from several containers, the outer-most being a div classed as "wikiEditor-ui". These containers
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* provide a certain amount of "free" layout, but in some situations procedural layout is needed, which is performed
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* as a response to the "resize" event.
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*/
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/* Preserving cursor and focus state, which will get lost due to wrapAll */
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const hasFocus = context.$textarea.is( ':focus' );
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const cursorPos = context.$textarea.textSelection( 'getCaretPosition', { startAndEnd: true } );
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// Encapsulate the textarea with some containers for layout
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context.$textarea
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.wrapAll( $( '<div>' ).addClass( 'wikiEditor-ui' ) )
|
|
.wrapAll( $( '<div>' ).addClass( 'wikiEditor-ui-view wikiEditor-ui-view-wikitext' ) )
|
|
.wrapAll( $( '<div>' ).addClass( 'wikiEditor-ui-left' ) )
|
|
.wrapAll( $( '<div>' ).addClass( 'wikiEditor-ui-bottom' ) )
|
|
.wrapAll( $( '<div>' ).addClass( 'wikiEditor-ui-text' ) );
|
|
// Restore scroll position after this wrapAll (tracked by mediawiki.action.edit)
|
|
context.$textarea.prop( 'scrollTop', $( '#wpScrolltop' ).val() );
|
|
// Restore focus and cursor if needed
|
|
if ( hasFocus ) {
|
|
context.$textarea.trigger( 'focus' );
|
|
context.$textarea.textSelection( 'setSelection', { start: cursorPos[ 0 ], end: cursorPos[ 1 ] } );
|
|
}
|
|
|
|
// Get references to some of the newly created containers
|
|
context.$ui = context.$textarea.parent().parent().parent().parent().parent();
|
|
context.$wikitext = context.$textarea.parent().parent().parent().parent();
|
|
// Add in tab and button containers
|
|
context.$wikitext.before(
|
|
$( '<div>' ).addClass( 'wikiEditor-ui-controls' ).append(
|
|
$( '<div>' ).addClass( 'wikiEditor-ui-tabs' ).hide(),
|
|
$( '<div>' ).addClass( 'wikiEditor-ui-buttons' )
|
|
),
|
|
$( '<div>' ).addClass( 'wikiEditor-ui-clear' )
|
|
);
|
|
// Get references to some of the newly created containers
|
|
context.$controls = context.$ui.find( '.wikiEditor-ui-buttons' ).hide();
|
|
context.$buttons = context.$ui.find( '.wikiEditor-ui-buttons' );
|
|
context.$tabs = context.$ui.find( '.wikiEditor-ui-tabs' );
|
|
// Clear all floating after the UI
|
|
context.$ui.after( $( '<div>' ).addClass( 'wikiEditor-ui-clear' ) );
|
|
// Attach a right container
|
|
context.$wikitext.append(
|
|
$( '<div>' ).addClass( 'wikiEditor-ui-right' ),
|
|
$( '<div>' ).addClass( 'wikiEditor-ui-clear' )
|
|
);
|
|
// Attach a top container to the left pane
|
|
context.$wikitext.find( '.wikiEditor-ui-left' ).prepend( $( '<div>' ).addClass( 'wikiEditor-ui-top' ) );
|
|
// Setup the initial view
|
|
context.view = 'wikitext';
|
|
// Trigger the "resize" event anytime the window is resized
|
|
$( window ).on( 'resize', ( event ) => {
|
|
context.fn.trigger( 'resize', event );
|
|
} );
|
|
}
|
|
|
|
/* API Execution */
|
|
|
|
// Since javascript gives arguments as an object, we need to convert them so they can be used more easily
|
|
const args = $.makeArray( arguments );
|
|
|
|
// Dynamically setup core extensions for modules that are required
|
|
if ( args[ 0 ] === 'addModule' && typeof args[ 1 ] !== 'undefined' ) {
|
|
let modulesArg = args[ 1 ];
|
|
if ( typeof modulesArg !== 'object' ) {
|
|
modulesArg = {};
|
|
modulesArg[ args[ 1 ] ] = '';
|
|
}
|
|
for ( const m in modulesArg ) {
|
|
if ( m in $.wikiEditor.modules ) {
|
|
// Activate all required core extensions on context
|
|
for ( const extension in $.wikiEditor.extensions ) {
|
|
if (
|
|
$.wikiEditor.isRequired( $.wikiEditor.modules[ m ], extension ) &&
|
|
context.extensions.indexOf( extension ) === -1
|
|
) {
|
|
context.extensions[ context.extensions.length ] = extension;
|
|
$.wikiEditor.extensions[ extension ]( context );
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// There would need to be some arguments if the API is being called
|
|
if ( args.length > 0 ) {
|
|
// Handle API calls
|
|
const callArg = args.shift();
|
|
if ( callArg in context.api ) {
|
|
context.api[ callArg ]( context, args[ 0 ] || {} );
|
|
}
|
|
}
|
|
|
|
// Store the context for next time, and support chaining
|
|
return $( this ).data( 'wikiEditor-context', context );
|
|
|
|
};
|