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searchSuggest.js
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searchSuggest.js
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/*!
* Add search suggestions to the search form.
*/
( function () {
// eslint-disable-next-line no-jquery/no-map-util
const searchNS = $.map( mw.config.get( 'wgFormattedNamespaces' ), ( nsName, nsID ) => {
if ( nsID >= 0 && mw.user.options.get( 'searchNs' + nsID ) ) {
// Cast string key to number
return Number( nsID );
}
} );
/**
* Convenience library for making searches for titles that match a string.
* Loaded via the `mediawiki.searchSuggest` ResourceLoader library.
*
* @example
* mw.loader.using('mediawiki.searchSuggest').then(() => {
* var api = new mw.Api();
* mw.searchSuggest.request(api, 'Dogs that', ( results ) => {
* alert( `Results that match: ${results.join( '\n' );}` );
* });
* });
* @namespace mw.searchSuggest
*/
mw.searchSuggest = {
/**
* @typedef {Object} mw.searchSuggest~ResponseMetaData
* @property {string} type the contents of the X-OpenSearch-Type response header.
* @property {string} searchId the contents of the X-Search-ID response header.
* @property {string} query
*/
/**
* @callback mw.searchSuggest~ResponseFunction
* @param {string[]} titles titles of pages that match search
* @param {ResponseMetaData} meta meta data relating to search.
*/
/**
* Queries the wiki and calls response with the result.
*
* @param {mw.Api} api
* @param {string} query
* @param {ResponseFunction} response
* @param {string|number} [limit]
* @param {string|number|string[]|number[]} [namespace]
* @return {jQuery.Deferred}
*/
request: function ( api, query, response, limit, namespace ) {
return api.get( {
formatversion: 2,
action: 'opensearch',
search: query,
namespace: namespace || searchNS,
limit
} ).done( ( data, jqXHR ) => {
response( data[ 1 ], {
type: jqXHR.getResponseHeader( 'X-OpenSearch-Type' ),
searchId: jqXHR.getResponseHeader( 'X-Search-ID' ),
query
} );
} );
}
};
$( () => {
let api;
// Region where the suggestions box will appear directly below
// (using the same width). Can be a container element or the input
// itself, depending on what suits best in the environment.
// For Vector the suggestion box should align with the simpleSearch
// container's borders, in other skins it should align with the input
// element (not the search form, as that would leave the buttons
// vertically between the input and the suggestions).
const $searchRegion = $( '#simpleSearch, #searchInput' ).first(),
$searchInput = $( '#searchInput' );
let previousSearchText = $searchInput.val();
function serializeObject( fields ) {
const obj = {};
for ( let i = 0; i < fields.length; i++ ) {
obj[ fields[ i ].name ] = fields[ i ].value;
}
return obj;
}
// Compute form data for search suggestions functionality.
function getFormData( context ) {
if ( !context.formData ) {
// Compute common parameters for links' hrefs
const $form = context.config.$region.closest( 'form' );
let baseHref = $form.attr( 'action' ) || '';
baseHref += baseHref.includes( '?' ) ? '&' : '?';
const linkParams = serializeObject( $form.serializeArray() );
context.formData = {
textParam: context.data.$textbox.attr( 'name' ),
linkParams: linkParams,
baseHref: baseHref
};
}
return context.formData;
}
/**
* Callback that's run when the user changes the search input text
* 'this' is the search input box (jQuery object)
*
* @ignore
*/
function onBeforeUpdate() {
const searchText = this.val();
if ( searchText && searchText !== previousSearchText ) {
mw.track( 'mediawiki.searchSuggest', {
action: 'session-start'
} );
}
previousSearchText = searchText;
}
/**
* Defines the location of autocomplete. Typically either
* header, which is in the top right of vector (for example)
* and content which identifies the main search bar on
* Special:Search. Defaults to header for skins that don't set
* explicitly.
*
* @ignore
* @param {Object} context
* @return {string}
*/
function getInputLocation( context ) {
return context.config.$region
.closest( 'form' )
.find( '[data-search-loc]' )
.data( 'search-loc' ) || 'header';
}
/**
* Callback that's run when suggestions have been updated either from the cache or the API
* 'this' is the search input box (jQuery object)
*
* @ignore
* @param {Object} metadata
*/
function onAfterUpdate( metadata ) {
const context = this.data( 'suggestionsContext' );
mw.track( 'mediawiki.searchSuggest', {
action: 'impression-results',
numberOfResults: context.config.suggestions.length,
resultSetType: metadata.type || 'unknown',
searchId: metadata.searchId || null,
query: metadata.query,
inputLocation: getInputLocation( context )
} );
}
// The function used to render the suggestions.
function renderFunction( text, context ) {
const formData = getFormData( context ),
textboxConfig = context.data.$textbox.data( 'mw-searchsuggest' ) || {};
// linkParams object is modified and reused
formData.linkParams[ formData.textParam ] = text;
// Allow trackers to attach tracking information, such
// as wprov, to clicked links.
mw.track( 'mediawiki.searchSuggest', {
action: 'render-one',
formData: formData,
index: context.config.suggestions.indexOf( text )
} );
// this is the container <div>, jQueryfied
this.text( text );
// wrap only as link, if the config doesn't disallow it
if ( textboxConfig.wrapAsLink !== false ) {
this.wrap(
$( '<a>' )
.attr( 'href', formData.baseHref + $.param( formData.linkParams ) )
.attr( 'title', text )
.addClass( 'mw-searchSuggest-link' )
);
}
}
// The function used when the user makes a selection
function selectFunction( $input, source ) {
const context = $input.data( 'suggestionsContext' ),
text = $input.val(),
url = $( this ).parent( 'a' ).attr( 'href' );
// We want to track a click-result XOR a submit-form action.
// If the source was 'click' (or otherwise non-'keyboard'),
// track it and then let the rest of the event proceed as normal.
// If the source was 'keyboard', and we have a URL
// (from the <a> that the result was wrapped in, see renderFunction()),
// then also track a click, prevent the regular form submit,
// and instead directly navigate to the URL as if it had been clicked.
// If the source was 'keyboard', but we have no URL,
// then we have to let the regular form submit go through,
// so skip the click tracking in that case to avoid duplicate tracking.
if ( source === 'keyboard' && url || source !== 'keyboard' ) {
mw.track( 'mediawiki.searchSuggest', {
action: 'click-result',
numberOfResults: context.config.suggestions.length,
index: context.config.suggestions.indexOf( text )
} );
if ( source === 'keyboard' ) {
window.location.assign( url );
// prevent default and stop propagation
return false;
}
}
// allow the form to be submitted
return true;
}
function specialRenderFunction( query, context ) {
const $el = this,
formData = getFormData( context );
// linkParams object is modified and reused
formData.linkParams[ formData.textParam ] = query;
mw.track( 'mediawiki.searchSuggest', {
action: 'render-one',
formData: formData,
index: context.config.suggestions.indexOf( query )
} );
if ( mw.user.options.get( 'search-match-redirect' ) && $el.children().length === 0 ) {
$el
.append(
$( '<div>' )
.addClass( 'special-label' )
.text( mw.msg( 'searchsuggest-containing' ) ),
$( '<div>' )
.addClass( 'special-query' )
.text( query )
)
.show();
} else {
$el.find( '.special-query' )
.text( query );
}
// eslint-disable-next-line no-jquery/no-class-state
if ( $el.parent().hasClass( 'mw-searchSuggest-link' ) ) {
$el.parent().attr( 'href', formData.baseHref + $.param( formData.linkParams ) + '&fulltext=1' );
} else {
$el.wrap(
$( '<a>' )
.attr( 'href', formData.baseHref + $.param( formData.linkParams ) + '&fulltext=1' )
.addClass( 'mw-searchSuggest-link' )
);
}
}
// Generic suggestions functionality for all search boxes
const searchboxesSelectors = [
// Primary searchbox on every page in standard skins
'#searchInput',
// Generic selector for skins with multiple searchboxes (used by CologneBlue)
// and for MediaWiki itself (special pages with page title inputs)
'.mw-searchInput'
];
$( searchboxesSelectors.join( ', ' ) )
.suggestions( {
fetch: function ( query, response, maxRows ) {
const node = this[ 0 ];
api = api || new mw.Api();
$.data( node, 'request', mw.searchSuggest.request( api, query, response, maxRows ) );
},
cancel: function () {
const node = this[ 0 ],
request = $.data( node, 'request' );
if ( request ) {
request.abort();
$.removeData( node, 'request' );
}
},
result: {
render: renderFunction,
select: function () {
// allow the form to be submitted
return true;
}
},
update: {
before: onBeforeUpdate,
after: onAfterUpdate
},
cache: true,
highlightInput: true
} )
.on( 'paste cut drop', function () {
// make sure paste and cut events from the mouse and drag&drop events
// trigger the keypress handler and cause the suggestions to update
$( this ).trigger( 'keypress' );
} )
// In most skins (at least Monobook and Vector), the font-size is messed up in <body>.
// (they use 2 elements to get a sensible font-height). So, instead of making exceptions for
// each skin or adding more stylesheets, just copy it from the active element so auto-fit.
.each( function () {
const $this = $( this );
$this
.data( 'suggestions-context' )
.data.$container.css( 'fontSize', $this.css( 'fontSize' ) );
} );
// Ensure that the thing is actually present!
if ( $searchRegion.length === 0 ) {
// Don't try to set anything up if simpleSearch is disabled sitewide.
// The loader code loads us if the option is present, even if we're
// not actually enabled (anymore).
return;
}
// Special suggestions functionality and tracking for skin-provided search box
$searchInput.suggestions( {
update: {
before: onBeforeUpdate,
after: onAfterUpdate
},
result: {
render: renderFunction,
select: selectFunction
},
special: {
render: specialRenderFunction,
select: function ( $input, source ) {
const context = $input.data( 'suggestionsContext' ),
text = $input.val();
if ( source === 'mouse' ) {
// mouse click won't trigger form submission, so we need to send a click event
mw.track( 'mediawiki.searchSuggest', {
action: 'click-result',
numberOfResults: context.config.suggestions.length,
index: context.config.suggestions.indexOf( text )
} );
} else {
$input.closest( 'form' )
.append(
$( '<input>' )
.prop( {
type: 'hidden',
value: 1
} )
.attr( 'name', 'fulltext' )
);
}
return true; // allow the form to be submitted
}
},
$region: $searchRegion
} );
const $searchForm = $searchInput.closest( 'form' );
$searchForm
// Track the form submit event.
// Note that the form is mainly submitted for manual user input;
// selecting a suggestion is tracked as a click instead (see selectFunction()).
.on( 'submit', () => {
const context = $searchInput.data( 'suggestionsContext' );
mw.track( 'mediawiki.searchSuggest', {
action: 'submit-form',
numberOfResults: context.config.suggestions.length,
$form: context.config.$region.closest( 'form' ),
inputLocation: getInputLocation( context ),
index: context.config.suggestions.indexOf(
context.data.$textbox.val()
)
} );
} );
// Check to see if the fulltext search button is placed before the go search button
if ( $searchForm.find( '.mw-fallbackSearchButton ~ .searchButton' ).length ) {
// Submitting the form with enter should always trigger "search within pages"
// for JavaScript capable browsers.
// If it is, remove the "full text search" fallback button.
// In skins, where the "full text search" button
// precedes the "search by title" button, e.g. Vector this is done for
// non-JavaScript support. If the "search by title" button is first,
// and two search buttons are shown e.g. MonoBook no change is needed.
$searchForm.find( '.mw-fallbackSearchButton' ).remove();
}
} );
}() );

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