resources/src/mediawiki.widgets/mw.widgets.TitleInputWidget.js

   1 /*!
   2  * MediaWiki Widgets - TitleInputWidget class.
   3  *
   4  * @copyright 2011-2015 MediaWiki Widgets Team and others; see AUTHORS.txt
   5  * @license The MIT License (MIT); see LICENSE.txt
   6  */
   7 ( function ( $, mw ) {
   8
   9         /**
  10          * Creates an mw.widgets.TitleInputWidget object.
  11          *
  12          * @class
  13          * @extends OO.ui.TextInputWidget
  14          * @mixins OO.ui.mixin.LookupElement
  15          *
  16          * @constructor
  17          * @param {Object} [config] Configuration options
  18          * @cfg {number} [limit=10] Number of results to show
  19          * @cfg {number} [namespace] Namespace to prepend to queries
  20          * @cfg {boolean} [relative=true] If a namespace is set, return a title relative to it
  21          * @cfg {boolean} [showRedirectTargets=true] Show the targets of redirects
  22          * @cfg {boolean} [showRedlink] Show red link to exact match if it doesn't exist
  23          * @cfg {boolean} [showImages] Show page images
  24          * @cfg {boolean} [showDescriptions] Show page descriptions
  25          * @cfg {Object} [cache] Result cache which implements a 'set' method, taking keyed values as an argument
  26          */
  27         mw.widgets.TitleInputWidget = function MwWidgetsTitleInputWidget( config ) {
  28                 var widget = this;
  29
  30                 // Config initialization
  31                 config = config || {};
  32
  33                 // Parent constructor
  34                 mw.widgets.TitleInputWidget.parent.call( this, $.extend( {}, config, { autocomplete: false } ) );
  35
  36                 // Mixin constructors
  37                 OO.ui.mixin.LookupElement.call( this, config );
  38
  39                 // Properties
  40                 this.limit = config.limit || 10;
  41                 this.namespace = config.namespace !== undefined ? config.namespace : null;
  42                 this.relative = config.relative !== undefined ? config.relative : true;
  43                 this.showRedirectTargets = config.showRedirectTargets !== false;
  44                 this.showRedlink = !!config.showRedlink;
  45                 this.showImages = !!config.showImages;
  46                 this.showDescriptions = !!config.showDescriptions;
  47                 this.cache = config.cache;
  48
  49                 // Initialization
  50                 this.$element.addClass( 'mw-widget-titleInputWidget' );
  51                 this.lookupMenu.$element.addClass( 'mw-widget-titleInputWidget-menu' );
  52                 if ( this.showImages ) {
  53                         this.lookupMenu.$element.addClass( 'mw-widget-titleInputWidget-menu-withImages' );
  54                 }
  55                 if ( this.showDescriptions ) {
  56                         this.lookupMenu.$element.addClass( 'mw-widget-titleInputWidget-menu-withDescriptions' );
  57                 }
  58
  59                 this.interwikiPrefixes = [];
  60                 this.interwikiPrefixesPromise = new mw.Api().get( {
  61                         action: 'query',
  62                         meta: 'siteinfo',
  63                         siprop: 'interwikimap'
  64                 } ).done( function ( data ) {
  65                         $.each( data.query.interwikimap, function ( index, interwiki ) {
  66                                 widget.interwikiPrefixes.push( interwiki.prefix );
  67                         } );
  68                 } );
  69         };
  70
  71         /* Setup */
  72
  73         OO.inheritClass( mw.widgets.TitleInputWidget, OO.ui.TextInputWidget );
  74         OO.mixinClass( mw.widgets.TitleInputWidget, OO.ui.mixin.LookupElement );
  75
  76         /* Methods */
  77
  78         /**
  79          * @inheritdoc
  80          */
  81         mw.widgets.TitleInputWidget.prototype.onLookupMenuItemChoose = function ( item ) {
  82                 this.closeLookupMenu();
  83                 this.setLookupsDisabled( true );
  84                 this.setValue( item.getData() );
  85                 this.setLookupsDisabled( false );
  86         };
  87
  88         /**
  89          * @inheritdoc
  90          */
  91         mw.widgets.TitleInputWidget.prototype.focus = function () {
  92                 var retval;
  93
  94                 // Prevent programmatic focus from opening the menu
  95                 this.setLookupsDisabled( true );
  96
  97                 // Parent method
  98                 retval = mw.widgets.TitleInputWidget.parent.prototype.focus.apply( this, arguments );
  99
 100                 this.setLookupsDisabled( false );
 101
 102                 return retval;
 103         };
 104
 105         /**
 106          * @inheritdoc
 107          */
 108         mw.widgets.TitleInputWidget.prototype.getLookupRequest = function () {
 109                 var req,
 110                         widget = this,
 111                         promiseAbortObject = { abort: function () {
 112                                 // Do nothing. This is just so OOUI doesn't break due to abort being undefined.
 113                         } };
 114
 115                 if ( mw.Title.newFromText( this.value ) ) {
 116                         return this.interwikiPrefixesPromise.then( function () {
 117                                 var params, props,
 118                                         interwiki = widget.value.substring( 0, widget.value.indexOf( ':' ) );
 119                                 if (
 120                                         interwiki && interwiki !== '' &&
 121                                         widget.interwikiPrefixes.indexOf( interwiki ) !== -1
 122                                 ) {
 123                                         return $.Deferred().resolve( { query: {
 124                                                 pages: [{
 125                                                         title: widget.value
 126                                                 }]
 127                                         } } ).promise( promiseAbortObject );
 128                                 } else {
 129                                         params = {
 130                                                 action: 'query',
 131                                                 generator: 'prefixsearch',
 132                                                 gpssearch: widget.value,
 133                                                 gpsnamespace: widget.namespace !== null ? widget.namespace : undefined,
 134                                                 gpslimit: widget.limit,
 135                                                 ppprop: 'disambiguation'
 136                                         };
 137                                         props = [ 'info', 'pageprops' ];
 138                                         if ( widget.showRedirectTargets ) {
 139                                                 params.redirects = '1';
 140                                         }
 141                                         if ( widget.showImages ) {
 142                                                 props.push( 'pageimages' );
 143                                                 params.pithumbsize = 80;
 144                                                 params.pilimit = widget.limit;
 145                                         }
 146                                         if ( widget.showDescriptions ) {
 147                                                 props.push( 'pageterms' );
 148                                                 params.wbptterms = 'description';
 149                                         }
 150                                         params.prop = props.join( '|' );
 151                                         req = new mw.Api().get( params );
 152                                         promiseAbortObject.abort = req.abort.bind( req ); // todo: ew
 153                                         return req;
 154                                 }
 155                         } ).promise( promiseAbortObject );
 156                 } else {
 157                         // Don't send invalid titles to the API.
 158                         // Just pretend it returned nothing so we can show the 'invalid title' section
 159                         return $.Deferred().resolve( {} ).promise( promiseAbortObject );
 160                 }
 161         };
 162
 163         /**
 164          * Get lookup cache item from server response data.
 165          *
 166          * @method
 167          * @param {Mixed} response Response from server
 168          */
 169         mw.widgets.TitleInputWidget.prototype.getLookupCacheDataFromResponse = function ( response ) {
 170                 return response.query || {};
 171         };
 172
 173         /**
 174          * Get list of menu items from a server response.
 175          *
 176          * @param {Object} data Query result
 177          * @returns {OO.ui.MenuOptionWidget[]} Menu items
 178          */
 179         mw.widgets.TitleInputWidget.prototype.getLookupMenuOptionsFromData = function ( data ) {
 180                 var i, len, index, pageExists, pageExistsExact, suggestionPage, page, redirect, redirects,
 181                         items = [],
 182                         titles = [],
 183                         titleObj = mw.Title.newFromText( this.value ),
 184                         redirectsTo = {},
 185                         pageData = {};
 186
 187                 if ( data.redirects ) {
 188                         for ( i = 0, len = data.redirects.length; i < len; i++ ) {
 189                                 redirect = data.redirects[i];
 190                                 redirectsTo[redirect.to] = redirectsTo[redirect.to] || [];
 191                                 redirectsTo[redirect.to].push( redirect.from );
 192                         }
 193                 }
 194
 195                 for ( index in data.pages ) {
 196                         suggestionPage = data.pages[index];
 197                         pageData[suggestionPage.title] = {
 198                                 missing: suggestionPage.missing !== undefined,
 199                                 redirect: suggestionPage.redirect !== undefined,
 200                                 disambiguation: OO.getProp( suggestionPage, 'pageprops', 'disambiguation' ) !== undefined,
 201                                 imageUrl: OO.getProp( suggestionPage, 'thumbnail', 'source' ),
 202                                 description: OO.getProp( suggestionPage, 'terms', 'description' )
 203                         };
 204
 205                         // Throw away pages from wrong namespaces. This can happen when 'showRedirectTargets' is true
 206                         // and we encounter a cross-namespace redirect.
 207                         if ( this.namespace === null || this.namespace === suggestionPage.ns ) {
 208                                 titles.push( suggestionPage.title );
 209                         }
 210
 211                         redirects = redirectsTo[suggestionPage.title] || [];
 212                         for ( i = 0, len = redirects.length; i < len; i++ ) {
 213                                 pageData[redirects[i]] = {
 214                                         missing: false,
 215                                         redirect: true,
 216                                         disambiguation: false,
 217                                         description: mw.msg( 'mw-widgets-titleinput-description-redirect', suggestionPage.title )
 218                                 };
 219                                 titles.push( redirects[i] );
 220                         }
 221                 }
 222
 223                 // If not found, run value through mw.Title to avoid treating a match as a
 224                 // mismatch where normalisation would make them matching (bug 48476)
 225
 226                 pageExistsExact = titles.indexOf( this.value ) !== -1;
 227                 pageExists = pageExistsExact || (
 228                         titleObj && titles.indexOf( titleObj.getPrefixedText() ) !== -1
 229                 );
 230
 231                 if ( !pageExists ) {
 232                         pageData[this.value] = {
 233                                 missing: true, redirect: false, disambiguation: false,
 234                                 description: mw.msg( 'mw-widgets-titleinput-description-new-page' )
 235                         };
 236                 }
 237
 238                 if ( this.cache ) {
 239                         this.cache.set( pageData );
 240                 }
 241
 242                 // Offer the exact text as a suggestion if the page exists
 243                 if ( pageExists && !pageExistsExact ) {
 244                         titles.unshift( this.value );
 245                 }
 246                 // Offer the exact text as a new page if the title is valid
 247                 if ( this.showRedlink && !pageExists && titleObj ) {
 248                         titles.push( this.value );
 249                 }
 250                 for ( i = 0, len = titles.length; i < len; i++ ) {
 251                         page = pageData[titles[i]] || {};
 252                         items.push( new mw.widgets.TitleOptionWidget( this.getOptionWidgetData( titles[i], page ) ) );
 253                 }
 254
 255                 return items;
 256         };
 257
 258         /**
 259          * Get menu option widget data from the title and page data
 260          *
 261          * @param {mw.Title} title Title object
 262          * @param {Object} data Page data
 263          * @return {Object} Data for option widget
 264          */
 265         mw.widgets.TitleInputWidget.prototype.getOptionWidgetData = function ( title, data ) {
 266                 var mwTitle = new mw.Title( title );
 267                 return {
 268                         data: this.namespace !== null && this.relative
 269                                 ? mwTitle.getRelativeText( this.namespace )
 270                                 : title,
 271                         title: mwTitle,
 272                         imageUrl: this.showImages ? data.imageUrl : null,
 273                         description: this.showDescriptions ? data.description : null,
 274                         missing: data.missing,
 275                         redirect: data.redirect,
 276                         disambiguation: data.disambiguation,
 277                         query: this.value
 278                 };
 279         };
 280
 281         /**
 282          * Get title object corresponding to #getValue
 283          *
 284          * @returns {mw.Title|null} Title object, or null if value is invalid
 285          */
 286         mw.widgets.TitleInputWidget.prototype.getTitle = function () {
 287                 var title = this.getValue(),
 288                         // mw.Title doesn't handle null well
 289                         titleObj = mw.Title.newFromText( title, this.namespace !== null ? this.namespace : undefined );
 290
 291                 return titleObj;
 292         };
 293
 294         /**
 295          * @inheritdoc
 296          */
 297         mw.widgets.TitleInputWidget.prototype.isValid = function () {
 298                 return $.Deferred().resolve( !!this.getTitle() ).promise();
 299         };
 300
 301 }( jQuery, mediaWiki ) );