ec3241f5ea
* Localisation updates for many languages.
* Don't cut-off language names vertically (by Volker Eckl).
* Fix eslint issues (by Kartik Mistry).
Updating to
d9fece1a15
Change-Id: I186fa19c91323a20d86c7881191022f48b2deb7f
489 lines
12 KiB
JavaScript
489 lines
12 KiB
JavaScript
/**
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* Universal Language Selector
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* ULS core component.
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*
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* Copyright (C) 2012 Alolita Sharma, Amir Aharoni, Arun Ganesh, Brandon Harris,
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* Niklas Laxström, Pau Giner, Santhosh Thottingal, Siebrand Mazeland and other
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* contributors. See CREDITS for a list.
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*
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* UniversalLanguageSelector is dual licensed GPLv2 or later and MIT. You don't
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* have to do anything special to choose one license or the other and you don't
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* have to notify anyone which license you are using. You are free to use
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* UniversalLanguageSelector in commercial projects as long as the copyright
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* header is left intact. See files GPL-LICENSE and MIT-LICENSE for details.
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*
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* @file
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* @ingroup Extensions
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* @licence GNU General Public Licence 2.0 or later
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* @licence MIT License
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*/
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( function ( $ ) {
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'use strict';
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var template, ULS;
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// Region numbers in id attributes also appear in the langdb.
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// eslint-disable-next-line no-multi-str
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template = '<div class="grid uls-menu"> \
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<div id="search" class="row uls-search"> \
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<div class="uls-search-wrapper"> \
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<label class="uls-search-label" for="uls-languagefilter"></label>\
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<div class="uls-search-input-wrapper">\
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<span class="uls-languagefilter-clear"></span>\
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<input type="text" class="uls-filterinput uls-filtersuggestion"\
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disabled="true" autocomplete="off">\
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<input type="text" class="uls-filterinput uls-languagefilter"\
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maxlength="40"\
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data-clear="uls-languagefilter-clear"\
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data-suggestion="uls-filtersuggestion"\
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placeholder="Search for a language" autocomplete="off">\
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</div>\
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</div>\
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</div>\
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<div class="row uls-language-list"></div>\
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<div class="row" id="uls-settings-block"></div>\
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</div>';
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/**
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* ULS Public class definition
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* @param {Element} element
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* @param {Object} options
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*/
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ULS = function ( element, options ) {
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var code;
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this.$element = $( element );
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this.options = $.extend( {}, $.fn.uls.defaults, options );
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this.$menu = $( template );
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this.languages = this.options.languages;
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for ( code in this.languages ) {
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if ( $.uls.data.languages[ code ] === undefined ) {
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// Language is unknown to ULS.
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delete this.languages[ code ];
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}
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}
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this.left = this.options.left;
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this.top = this.options.top;
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this.shown = false;
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this.initialized = false;
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this.shouldRecreate = false;
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this.menuWidth = this.getMenuWidth();
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this.$languageFilter = this.$menu.find( '.uls-languagefilter' );
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this.$resultsView = this.$menu.find( '.uls-language-list' );
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this.render();
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this.listen();
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this.ready();
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};
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ULS.prototype = {
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constructor: ULS,
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/**
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* A "hook" that runs after the ULS constructor.
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* At this point it is not guaranteed that the ULS has its dimensions
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* and that the languages lists are initialized.
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*
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* To use it, pass a function as the onReady parameter
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* in the options when initializing ULS.
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*/
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ready: function () {
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if ( this.options.onReady ) {
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this.options.onReady.call( this );
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}
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},
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/**
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* A "hook" that runs after the ULS panel becomes visible
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* by using the show method.
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*
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* To use it, pass a function as the onVisible parameter
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* in the options when initializing ULS.
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*/
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visible: function () {
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if ( this.options.onVisible ) {
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this.options.onVisible.call( this );
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}
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},
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/**
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* Calculate the position of ULS
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* Returns an object with top and left properties.
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* @return {Object}
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*/
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position: function () {
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var pos,
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top = this.top,
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left = this.left;
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if ( top === undefined ) {
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pos = $.extend( {}, this.$element.offset(), {
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height: this.$element[ 0 ].offsetHeight
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} );
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top = pos.top + pos.height;
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}
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if ( left === undefined ) {
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left = $( window ).width() / 2 - this.$menu.outerWidth() / 2;
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}
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return {
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top: top,
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left: left
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};
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},
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/**
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* Show the ULS window
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*/
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show: function () {
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var widthClasses = {
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wide: 'uls-wide',
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medium: 'uls-medium',
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narrow: 'uls-narrow'
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};
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this.$menu.addClass( widthClasses[ this.menuWidth ] );
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if ( !this.initialized ) {
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$( 'body' ).prepend( this.$menu );
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this.i18n();
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this.initialized = true;
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}
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this.$menu.css( this.position() );
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this.$menu.show();
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this.$menu.scrollIntoView();
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this.shown = true;
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if ( !this.isMobile() ) {
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this.$languageFilter.focus();
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}
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this.visible();
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},
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i18n: function () {
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if ( $.i18n ) {
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this.$menu.find( '[data-i18n]' ).i18n();
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this.$languageFilter.prop( 'placeholder', $.i18n( 'uls-search-placeholder' ) );
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}
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},
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/**
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* Hide the ULS window
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*/
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hide: function () {
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this.$menu.hide();
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this.shown = false;
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this.$menu.removeClass( 'uls-wide uls-medium uls-narrow' );
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if ( this.shouldRecreate ) {
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this.recreateLanguageFilter();
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}
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if ( this.options.onCancel ) {
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this.options.onCancel.call( this );
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}
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},
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/**
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* Render the UI elements.
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* Does nothing by default. Can be used for customization.
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*/
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render: function () {
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// Rendering stuff here
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},
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/**
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* Callback for results found context.
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*/
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success: function () {
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this.$resultsView.show();
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},
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createLanguageFilter: function () {
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var lcd, languagesCount,
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columnsOptions = {
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wide: 4,
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medium: 2,
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narrow: 1
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};
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languagesCount = Object.keys( this.options.languages ).length;
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lcd = this.$resultsView.lcd( {
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languages: this.languages,
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columns: columnsOptions[ this.menuWidth ],
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quickList: languagesCount > 12 ? this.options.quickList : [],
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clickhandler: this.select.bind( this ),
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showRegions: this.options.showRegions,
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languageDecorator: this.options.languageDecorator,
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noResultsTemplate: this.options.noResultsTemplate,
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itemsPerColumn: this.options.itemsPerColumn,
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groupByRegion: this.options.groupByRegion
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} ).data( 'lcd' );
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this.$languageFilter.languagefilter( {
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lcd: lcd,
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languages: this.languages,
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ulsPurpose: this.options.ulsPurpose,
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searchAPI: this.options.searchAPI,
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onSelect: this.select.bind( this )
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} );
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this.$languageFilter.on( 'noresults.uls', lcd.noResults.bind( lcd ) );
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},
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recreateLanguageFilter: function () {
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this.$resultsView.removeData( 'lcd' );
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this.$resultsView.empty();
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this.$languageFilter.removeData( 'languagefilter' );
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this.createLanguageFilter();
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this.shouldRecreate = false;
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},
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/**
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* Bind the UI elements with their event listeners
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*/
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listen: function () {
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// Register all event listeners to the ULS here.
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this.$element.on( 'click', this.click.bind( this ) );
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// Don't do anything if pressing on empty space in the ULS
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this.$menu.on( 'click', function ( e ) {
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e.stopPropagation();
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} );
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// Handle key press events on the menu
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this.$menu.on( 'keydown', this.keypress.bind( this ) );
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this.createLanguageFilter();
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this.$languageFilter.on( 'resultsfound.uls', this.success.bind( this ) );
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$( 'html' ).click( this.cancel.bind( this ) );
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$( window ).resize( $.fn.uls.debounce( this.resize.bind( this ), 250 ) );
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},
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resize: function () {
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var menuWidth = this.getMenuWidth();
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if ( this.menuWidth === menuWidth ) {
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return;
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}
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this.menuWidth = menuWidth;
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this.shouldRecreate = true;
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if ( !this.shown ) {
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this.recreateLanguageFilter();
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}
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},
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/**
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* On select handler for search results
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* @param {string} langCode
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* @param {Object} event The jQuery click event
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*/
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select: function ( langCode, event ) {
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this.hide();
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if ( this.options.onSelect ) {
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this.options.onSelect.call( this, langCode, event );
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}
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},
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/**
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* On cancel handler for the uls menu
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* @param {Event} e
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*/
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cancel: function ( e ) {
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if ( e && ( this.$element.is( e.target ) ||
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$.contains( this.$element[ 0 ], e.target ) ) ) {
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return;
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}
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this.hide();
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},
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keypress: function ( e ) {
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if ( !this.shown ) {
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return;
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}
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if ( e.keyCode === 27 ) { // escape
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this.cancel();
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e.preventDefault();
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e.stopPropagation();
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}
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},
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click: function () {
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if ( this.shown ) {
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this.hide();
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} else {
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this.show();
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}
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},
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/**
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* Get the panel menu width parameter
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* @return {string}
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*/
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getMenuWidth: function () {
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var languagesCount,
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screenWidth = document.documentElement.clientWidth;
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if ( this.options.menuWidth ) {
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return this.options.menuWidth;
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}
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languagesCount = Object.keys( this.options.languages ).length;
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if ( screenWidth > 900 && languagesCount >= 48 ) {
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return 'wide';
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}
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if ( screenWidth > 500 && languagesCount >= 24 ) {
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return 'medium';
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}
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return 'narrow';
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},
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isMobile: function () {
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return navigator.userAgent.match( /(iPhone|iPod|iPad|Android|BlackBerry)/ );
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}
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};
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/* ULS PLUGIN DEFINITION
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* =========================== */
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$.fn.uls = function ( option ) {
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return this.each( function () {
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var $this = $( this ),
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data = $this.data( 'uls' ),
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options = typeof option === 'object' && option;
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if ( !data ) {
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$this.data( 'uls', ( data = new ULS( this, options ) ) );
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}
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if ( typeof option === 'string' ) {
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data[ option ]();
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}
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} );
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};
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$.fn.uls.defaults = {
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// CSS top position for the dialog
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top: undefined,
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// CSS left position for the dialog
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left: undefined,
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// Callback function when user selects a language
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onSelect: undefined,
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// Callback function when the dialog is closed without selecting a language
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onCancel: undefined,
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// Callback function when ULS has initialized
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onReady: undefined,
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// Callback function when ULS dialog is shown
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onVisible: undefined,
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// Languages to be used for ULS, default is all languages
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languages: $.uls.data.getAutonyms(),
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// The options are wide (4 columns), medium (2 columns), and narrow (1 column).
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// If not specified, it will be set automatically.
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menuWidth: undefined,
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// What is this ULS used for.
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// Should be set for distinguishing between different instances of ULS
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// in the same application.
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ulsPurpose: '',
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// Used by LCD
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quickList: [],
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// Used by LCD
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showRegions: undefined,
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// Used by LCD
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languageDecorator: undefined,
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// Used by LCD
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noResultsTemplate: undefined,
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// Used by LCD
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itemsPerColumn: undefined,
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// Used by LCD
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groupByRegion: undefined,
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// Used by LanguageFilter
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searchAPI: undefined
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};
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// Define a dummy i18n function, if jquery.i18n not integrated.
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if ( !$.fn.i18n ) {
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$.fn.i18n = function () {};
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}
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/**
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* Creates and returns a new debounced version of the passed function,
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* which will postpone its execution, until after wait milliseconds have elapsed
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* since the last time it was invoked.
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*
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* @param {Function} fn Function to be debounced.
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* @param {number} wait Wait interval in milliseconds.
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* @param {boolean} [immediate] Trigger the function on the leading edge of the wait interval,
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* instead of the trailing edge.
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* @return {Function} Debounced function.
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*/
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$.fn.uls.debounce = function ( fn, wait, immediate ) {
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var timeout;
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return function () {
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var callNow, self = this,
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later = function () {
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timeout = null;
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if ( !immediate ) {
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fn.apply( self, arguments );
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}
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};
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callNow = immediate && !timeout;
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clearTimeout( timeout );
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timeout = setTimeout( later, wait || 100 );
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if ( callNow ) {
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fn.apply( self, arguments );
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}
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};
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};
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/*
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* Simple scrollIntoView plugin.
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* Scrolls the element to the viewport smoothly if it is not already.
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*/
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$.fn.scrollIntoView = function () {
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return this.each( function () {
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var scrollPosition,
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$window = $( window ),
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windowHeight = $window.height(),
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windowTop = $window.scrollTop(),
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windowBottom = windowTop + windowHeight,
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$element = $( this ),
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panelHeight = $element.height(),
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panelTop = $element.offset().top,
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panelBottom = panelTop + panelHeight;
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if ( ( panelTop < windowTop ) || ( panelBottom > windowBottom ) ) {
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if ( windowTop > panelTop ) {
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scrollPosition = panelTop;
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} else {
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scrollPosition = panelBottom - windowHeight;
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}
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$( 'html, body' ).stop().animate( {
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scrollTop: scrollPosition
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}, 500 );
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}
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} );
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};
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$.fn.uls.Constructor = ULS;
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}( jQuery ) );
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