resources/src/mediawiki.searchSuggest/searchSuggest.js

   1 /* eslint-disable no-restricted-properties */
   2 /*!
   3  * Add search suggestions to the search form.
   4  */
   5 ( function () {
   6         // eslint-disable-next-line jquery/no-map-util
   7         var searchNS = $.map( mw.config.get( 'wgFormattedNamespaces' ), function ( nsName, nsID ) {
   8                 if ( nsID >= 0 && mw.user.options.get( 'searchNs' + nsID ) ) {
   9                         // Cast string key to number
  10                         return Number( nsID );
  11                 }
  12         } );
  13         mw.searchSuggest = {
  14                 // queries the wiki and calls response with the result
  15                 request: function ( api, query, response, maxRows, namespace ) {
  16                         return api.get( {
  17                                 formatversion: 2,
  18                                 action: 'opensearch',
  19                                 search: query,
  20                                 namespace: namespace || searchNS,
  21                                 limit: maxRows,
  22                                 suggest: true
  23                         } ).done( function ( data, jqXHR ) {
  24                                 response( data[ 1 ], {
  25                                         type: jqXHR.getResponseHeader( 'X-OpenSearch-Type' ),
  26                                         searchId: jqXHR.getResponseHeader( 'X-Search-ID' ),
  27                                         query: query
  28                                 } );
  29                         } );
  30                 }
  31         };
  32
  33         $( function () {
  34                 var api, searchboxesSelectors,
  35                         // Region where the suggestions box will appear directly below
  36                         // (using the same width). Can be a container element or the input
  37                         // itself, depending on what suits best in the environment.
  38                         // For Vector the suggestion box should align with the simpleSearch
  39                         // container's borders, in other skins it should align with the input
  40                         // element (not the search form, as that would leave the buttons
  41                         // vertically between the input and the suggestions).
  42                         $searchRegion = $( '#simpleSearch, #searchInput' ).first(),
  43                         $searchInput = $( '#searchInput' ),
  44                         previousSearchText = $searchInput.val();
  45
  46                 // Compute form data for search suggestions functionality.
  47                 function getFormData( context ) {
  48                         var $form, baseHref, linkParams;
  49
  50                         if ( !context.formData ) {
  51                                 // Compute common parameters for links' hrefs
  52                                 $form = context.config.$region.closest( 'form' );
  53
  54                                 baseHref = $form.attr( 'action' );
  55                                 baseHref += baseHref.indexOf( '?' ) > -1 ? '&' : '?';
  56
  57                                 linkParams = $form.serializeObject();
  58
  59                                 context.formData = {
  60                                         textParam: context.data.$textbox.attr( 'name' ),
  61                                         linkParams: linkParams,
  62                                         baseHref: baseHref
  63                                 };
  64                         }
  65
  66                         return context.formData;
  67                 }
  68
  69                 /**
  70                  * Callback that's run when the user changes the search input text
  71                  * 'this' is the search input box (jQuery object)
  72                  *
  73                  * @ignore
  74                  */
  75                 function onBeforeUpdate() {
  76                         var searchText = this.val();
  77
  78                         if ( searchText && searchText !== previousSearchText ) {
  79                                 mw.track( 'mediawiki.searchSuggest', {
  80                                         action: 'session-start'
  81                                 } );
  82                         }
  83                         previousSearchText = searchText;
  84                 }
  85
  86                 /**
  87                  * Defines the location of autocomplete. Typically either
  88                  * header, which is in the top right of vector (for example)
  89                  * and content which identifies the main search bar on
  90                  * Special:Search. Defaults to header for skins that don't set
  91                  * explicitly.
  92                  *
  93                  * @ignore
  94                  * @param {Object} context
  95                  * @return {string}
  96                  */
  97                 function getInputLocation( context ) {
  98                         return context.config.$region
  99                                 .closest( 'form' )
 100                                 .find( '[data-search-loc]' )
 101                                 .data( 'search-loc' ) || 'header';
 102                 }
 103
 104                 /**
 105                  * Callback that's run when suggestions have been updated either from the cache or the API
 106                  * 'this' is the search input box (jQuery object)
 107                  *
 108                  * @ignore
 109                  * @param {Object} metadata
 110                  */
 111                 function onAfterUpdate( metadata ) {
 112                         var context = this.data( 'suggestionsContext' );
 113
 114                         mw.track( 'mediawiki.searchSuggest', {
 115                                 action: 'impression-results',
 116                                 numberOfResults: context.config.suggestions.length,
 117                                 resultSetType: metadata.type || 'unknown',
 118                                 searchId: metadata.searchId || null,
 119                                 query: metadata.query,
 120                                 inputLocation: getInputLocation( context )
 121                         } );
 122                 }
 123
 124                 // The function used to render the suggestions.
 125                 function renderFunction( text, context ) {
 126                         var formData = getFormData( context ),
 127                                 textboxConfig = context.data.$textbox.data( 'mw-searchsuggest' ) || {};
 128
 129                         // linkParams object is modified and reused
 130                         formData.linkParams[ formData.textParam ] = text;
 131
 132                         // Allow trackers to attach tracking information, such
 133                         // as wprov, to clicked links.
 134                         mw.track( 'mediawiki.searchSuggest', {
 135                                 action: 'render-one',
 136                                 formData: formData,
 137                                 index: context.config.suggestions.indexOf( text )
 138                         } );
 139
 140                         // this is the container <div>, jQueryfied
 141                         this.text( text );
 142
 143                         // wrap only as link, if the config doesn't disallow it
 144                         if ( textboxConfig.wrapAsLink !== false ) {
 145                                 this.wrap(
 146                                         $( '<a>' )
 147                                                 .attr( 'href', formData.baseHref + $.param( formData.linkParams ) )
 148                                                 .attr( 'title', text )
 149                                                 .addClass( 'mw-searchSuggest-link' )
 150                                 );
 151                         }
 152                 }
 153
 154                 // The function used when the user makes a selection
 155                 function selectFunction( $input, source ) {
 156                         var context = $input.data( 'suggestionsContext' ),
 157                                 text = $input.val();
 158
 159                         // Selecting via keyboard triggers a form submission. That will fire
 160                         // the submit-form event in addition to this click-result event.
 161                         if ( source !== 'keyboard' ) {
 162                                 mw.track( 'mediawiki.searchSuggest', {
 163                                         action: 'click-result',
 164                                         numberOfResults: context.config.suggestions.length,
 165                                         index: context.config.suggestions.indexOf( text )
 166                                 } );
 167                         }
 168
 169                         // allow the form to be submitted
 170                         return true;
 171                 }
 172
 173                 function specialRenderFunction( query, context ) {
 174                         var $el = this,
 175                                 formData = getFormData( context );
 176
 177                         // linkParams object is modified and reused
 178                         formData.linkParams[ formData.textParam ] = query;
 179
 180                         mw.track( 'mediawiki.searchSuggest', {
 181                                 action: 'render-one',
 182                                 formData: formData,
 183                                 index: context.config.suggestions.indexOf( query )
 184                         } );
 185
 186                         if ( $el.children().length === 0 ) {
 187                                 $el
 188                                         .append(
 189                                                 $( '<div>' )
 190                                                         .addClass( 'special-label' )
 191                                                         .text( mw.msg( 'searchsuggest-containing' ) ),
 192                                                 $( '<div>' )
 193                                                         .addClass( 'special-query' )
 194                                                         .text( query )
 195                                         )
 196                                         .show();
 197                         } else {
 198                                 $el.find( '.special-query' )
 199                                         .text( query );
 200                         }
 201
 202                         if ( $el.parent().hasClass( 'mw-searchSuggest-link' ) ) {
 203                                 $el.parent().attr( 'href', formData.baseHref + $.param( formData.linkParams ) + '&fulltext=1' );
 204                         } else {
 205                                 $el.wrap(
 206                                         $( '<a>' )
 207                                                 .attr( 'href', formData.baseHref + $.param( formData.linkParams ) + '&fulltext=1' )
 208                                                 .addClass( 'mw-searchSuggest-link' )
 209                                 );
 210                         }
 211                 }
 212
 213                 // Generic suggestions functionality for all search boxes
 214                 searchboxesSelectors = [
 215                         // Primary searchbox on every page in standard skins
 216                         '#searchInput',
 217                         // Generic selector for skins with multiple searchboxes (used by CologneBlue)
 218                         // and for MediaWiki itself (special pages with page title inputs)
 219                         '.mw-searchInput'
 220                 ];
 221                 $( searchboxesSelectors.join( ', ' ) )
 222                         .suggestions( {
 223                                 fetch: function ( query, response, maxRows ) {
 224                                         var node = this[ 0 ];
 225
 226                                         api = api || new mw.Api();
 227
 228                                         $.data( node, 'request', mw.searchSuggest.request( api, query, response, maxRows ) );
 229                                 },
 230                                 cancel: function () {
 231                                         var node = this[ 0 ],
 232                                                 request = $.data( node, 'request' );
 233
 234                                         if ( request ) {
 235                                                 request.abort();
 236                                                 $.removeData( node, 'request' );
 237                                         }
 238                                 },
 239                                 result: {
 240                                         render: renderFunction,
 241                                         select: function () {
 242                                                 // allow the form to be submitted
 243                                                 return true;
 244                                         }
 245                                 },
 246                                 update: {
 247                                         before: onBeforeUpdate,
 248                                         after: onAfterUpdate
 249                                 },
 250                                 cache: true,
 251                                 highlightInput: true
 252                         } )
 253                         .on( 'paste cut drop', function () {
 254                                 // make sure paste and cut events from the mouse and drag&drop events
 255                                 // trigger the keypress handler and cause the suggestions to update
 256                                 $( this ).trigger( 'keypress' );
 257                         } )
 258                         // In most skins (at least Monobook and Vector), the font-size is messed up in <body>.
 259                         // (they use 2 elements to get a sane font-height). So, instead of making exceptions for
 260                         // each skin or adding more stylesheets, just copy it from the active element so auto-fit.
 261                         .each( function () {
 262                                 var $this = $( this );
 263                                 $this
 264                                         .data( 'suggestions-context' )
 265                                         .data.$container.css( 'fontSize', $this.css( 'fontSize' ) );
 266                         } );
 267
 268                 // Ensure that the thing is actually present!
 269                 if ( $searchRegion.length === 0 ) {
 270                         // Don't try to set anything up if simpleSearch is disabled sitewide.
 271                         // The loader code loads us if the option is present, even if we're
 272                         // not actually enabled (anymore).
 273                         return;
 274                 }
 275
 276                 // Special suggestions functionality and tracking for skin-provided search box
 277                 $searchInput.suggestions( {
 278                         update: {
 279                                 before: onBeforeUpdate,
 280                                 after: onAfterUpdate
 281                         },
 282                         result: {
 283                                 render: renderFunction,
 284                                 select: selectFunction
 285                         },
 286                         special: {
 287                                 render: specialRenderFunction,
 288                                 select: function ( $input, source ) {
 289                                         var context = $input.data( 'suggestionsContext' ),
 290                                                 text = $input.val();
 291                                         if ( source === 'mouse' ) {
 292                                                 // mouse click won't trigger form submission, so we need to send a click event
 293                                                 mw.track( 'mediawiki.searchSuggest', {
 294                                                         action: 'click-result',
 295                                                         numberOfResults: context.config.suggestions.length,
 296                                                         index: context.config.suggestions.indexOf( text )
 297                                                 } );
 298                                         } else {
 299                                                 $input.closest( 'form' )
 300                                                         .append( $( '<input type="hidden" name="fulltext" value="1"/>' ) );
 301                                         }
 302                                         return true; // allow the form to be submitted
 303                                 }
 304                         },
 305                         $region: $searchRegion
 306                 } );
 307
 308                 $searchInput.closest( 'form' )
 309                         // track the form submit event
 310                         .on( 'submit', function () {
 311                                 var context = $searchInput.data( 'suggestionsContext' );
 312                                 mw.track( 'mediawiki.searchSuggest', {
 313                                         action: 'submit-form',
 314                                         numberOfResults: context.config.suggestions.length,
 315                                         $form: context.config.$region.closest( 'form' ),
 316                                         inputLocation: getInputLocation( context ),
 317                                         index: context.config.suggestions.indexOf(
 318                                                 context.data.$textbox.val()
 319                                         )
 320                                 } );
 321                         } )
 322                         // If the form includes any fallback fulltext search buttons, remove them
 323                         .find( '.mw-fallbackSearchButton' ).remove();
 324         } );
 325
 326 }() );