resources/mediawiki/mediawiki.searchSuggest.js

   1 /*!
   2  * Add search suggestions to the search form.
   3  */
   4 ( function ( mw, $ ) {
   5         $( function () {
   6                 var map, resultRenderCache, searchboxesSelectors,
   7                         // Region where the suggestions box will appear directly below
   8                         // (using the same width). Can be a container element or the input
   9                         // itself, depending on what suits best in the environment.
  10                         // For Vector the suggestion box should align with the simpleSearch
  11                         // container's borders, in other skins it should align with the input
  12                         // element (not the search form, as that would leave the buttons
  13                         // vertically between the input and the suggestions).
  14                         $searchRegion = $( '#simpleSearch, #searchInput' ).first(),
  15                         $searchInput = $( '#searchInput' );
  16
  17                 // Compatibility map
  18                 map = {
  19                         // SimpleSearch is broken in Opera < 9.6
  20                         opera: [['>=', 9.6]],
  21                         // Older Konquerors are unable to position the suggestions correctly (bug 50805)
  22                         konqueror: [['>=', '4.11']],
  23                         docomo: false,
  24                         blackberry: false,
  25                         ipod: false,
  26                         iphone: false
  27                 };
  28
  29                 if ( !$.client.test( map ) ) {
  30                         return;
  31                 }
  32
  33                 // Compute form data for search suggestions functionality.
  34                 function computeResultRenderCache( context ) {
  35                         var $form, baseHref, linkParams;
  36
  37                         // Compute common parameters for links' hrefs
  38                         $form = context.config.$region.closest( 'form' );
  39
  40                         baseHref = $form.attr( 'action' );
  41                         baseHref += baseHref.indexOf( '?' ) > -1 ? '&' : '?';
  42
  43                         linkParams = {};
  44                         $.each( $form.serializeArray(), function ( idx, obj ) {
  45                                 linkParams[ obj.name ] = obj.value;
  46                         } );
  47
  48                         return {
  49                                 textParam: context.data.$textbox.attr( 'name' ),
  50                                 linkParams: linkParams,
  51                                 baseHref: baseHref
  52                         };
  53                 }
  54
  55                 // The function used to render the suggestions.
  56                 function renderFunction( text, context ) {
  57                         if ( !resultRenderCache ) {
  58                                 resultRenderCache = computeResultRenderCache( context );
  59                         }
  60
  61                         // linkParams object is modified and reused
  62                         resultRenderCache.linkParams[ resultRenderCache.textParam ] = text;
  63
  64                         // this is the container <div>, jQueryfied
  65                         this
  66                                 .append(
  67                                         // the <span> is needed for $.autoEllipsis to work
  68                                         $( '<span>' )
  69                                                 .css( 'whiteSpace', 'nowrap' )
  70                                                 .text( text )
  71                                 )
  72                                 .wrap(
  73                                         $( '<a>' )
  74                                                 .attr( 'href', resultRenderCache.baseHref + $.param( resultRenderCache.linkParams ) )
  75                                                 .addClass( 'mw-searchSuggest-link' )
  76                                 );
  77                 }
  78
  79                 function specialRenderFunction( query, context ) {
  80                         var $el = this;
  81
  82                         if ( !resultRenderCache ) {
  83                                 resultRenderCache = computeResultRenderCache( context );
  84                         }
  85
  86                         // linkParams object is modified and reused
  87                         resultRenderCache.linkParams[ resultRenderCache.textParam ] = query;
  88
  89                         if ( $el.children().length === 0 ) {
  90                                 $el
  91                                         .append(
  92                                                 $( '<div>' )
  93                                                         .addClass( 'special-label' )
  94                                                         .text( mw.msg( 'searchsuggest-containing' ) ),
  95                                                 $( '<div>' )
  96                                                         .addClass( 'special-query' )
  97                                                         .text( query )
  98                                                         .autoEllipsis()
  99                                         )
 100                                         .show();
 101                         } else {
 102                                 $el.find( '.special-query' )
 103                                         .text( query )
 104                                         .autoEllipsis();
 105                         }
 106
 107                         if ( $el.parent().hasClass( 'mw-searchSuggest-link' ) ) {
 108                                 $el.parent().attr( 'href', resultRenderCache.baseHref + $.param( resultRenderCache.linkParams ) + '&fulltext=1' );
 109                         } else {
 110                                 $el.wrap(
 111                                         $( '<a>' )
 112                                                 .attr( 'href', resultRenderCache.baseHref + $.param( resultRenderCache.linkParams ) + '&fulltext=1' )
 113                                                 .addClass( 'mw-searchSuggest-link' )
 114                                 );
 115                         }
 116                 }
 117
 118                 // General suggestions functionality for all search boxes
 119                 searchboxesSelectors = [
 120                         // Primary searchbox on every page in standard skins
 121                         '#searchInput',
 122                         // Special:Search
 123                         '#powerSearchText',
 124                         '#searchText',
 125                         // Generic selector for skins with multiple searchboxes (used by CologneBlue)
 126                         '.mw-searchInput'
 127                 ];
 128                 $( searchboxesSelectors.join( ', ' ) )
 129                         .suggestions( {
 130                                 fetch: function ( query ) {
 131                                         var $el;
 132
 133                                         if ( query.length !== 0 ) {
 134                                                 $el = $( this );
 135                                                 $el.data( 'request', ( new mw.Api() ).get( {
 136                                                         action: 'opensearch',
 137                                                         search: query,
 138                                                         namespace: 0,
 139                                                         suggest: ''
 140                                                 } ).done( function ( data ) {
 141                                                         $el.suggestions( 'suggestions', data[1] );
 142                                                 } ) );
 143                                         }
 144                                 },
 145                                 cancel: function () {
 146                                         var apiPromise = $( this ).data( 'request' );
 147                                         // If the delay setting has caused the fetch to have not even happened
 148                                         // yet, the apiPromise object will have never been set.
 149                                         if ( apiPromise && $.isFunction( apiPromise.abort ) ) {
 150                                                 apiPromise.abort();
 151                                                 $( this ).removeData( 'request' );
 152                                         }
 153                                 },
 154                                 result: {
 155                                         render: renderFunction,
 156                                         select: function () {
 157                                                 return true; // allow the form to be submitted
 158                                         }
 159                                 },
 160                                 delay: 120,
 161                                 highlightInput: true
 162                         } )
 163                         .bind( 'paste cut drop', function () {
 164                                 // make sure paste and cut events from the mouse and drag&drop events
 165                                 // trigger the keypress handler and cause the suggestions to update
 166                                 $( this ).trigger( 'keypress' );
 167                         } );
 168
 169                 // Ensure that the thing is actually present!
 170                 if ( $searchRegion.length === 0 ) {
 171                         // Don't try to set anything up if simpleSearch is disabled sitewide.
 172                         // The loader code loads us if the option is present, even if we're
 173                         // not actually enabled (anymore).
 174                         return;
 175                 }
 176
 177                 // Special suggestions functionality for skin-provided search box
 178                 $searchInput.suggestions( {
 179                         result: {
 180                                 render: renderFunction,
 181                                 select: function () {
 182                                         return true; // allow the form to be submitted
 183                                 }
 184                         },
 185                         special: {
 186                                 render: specialRenderFunction,
 187                                 select: function ( $input ) {
 188                                         $input.closest( 'form' )
 189                                                 .append( $( '<input type="hidden" name="fulltext" value="1"/>' ) );
 190                                         return true; // allow the form to be submitted
 191                                 }
 192                         },
 193                         $region: $searchRegion
 194                 } );
 195
 196                 // If the form includes any fallback fulltext search buttons, remove them
 197                 $searchInput.closest( 'form' ).find( '.mw-fallbackSearchButton' ).remove();
 198
 199                 // In most skins (at least Monobook and Vector), the font-size is messed up in <body>.
 200                 // (they use 2 elements to get a sane font-height). So, instead of making exceptions for
 201                 // each skin or adding more stylesheets, just copy it from the active element so auto-fit.
 202                 $searchInput
 203                         .data( 'suggestions-context' )
 204                         .data.$container
 205                                 .css( 'fontSize', $searchInput.css( 'fontSize' ) );
 206
 207         } );
 208
 209 }( mediaWiki, jQuery ) );