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