mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/MultimediaViewer
synced 2024-12-18 19:01:47 +00:00
f00dbbb939
Remove Immediately-invoked function expression throughout production code base. Bug: T77349 Change-Id: Ia31b556975209bbea27df8444b69d924654b181e
101 lines
2.2 KiB
JavaScript
101 lines
2.2 KiB
JavaScript
/*
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* This file is part of the MediaWiki extension MultimediaViewer.
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*
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* MultimediaViewer is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* MultimediaViewer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with MultimediaViewer. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* Represents a UI element.
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*
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* @abstract
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*/
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class UiElement {
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/**
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* @param {jQuery} $container
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*/
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constructor( $container ) {
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OO.EventEmitter.call( this );
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/** @property {jQuery} $container The element that contains the UI element. */
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this.$container = $container;
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/** @property {Object.<string, string[]>} eventsRegistered Events that this element has registered with the DOM. */
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this.eventsRegistered = {};
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}
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/**
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* Sets the data for the element.
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*
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* @abstract
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*/
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set() { }
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/**
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* Empties the element.
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*
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* @abstract
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*/
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empty() { }
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/**
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* Registers listeners.
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*
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* @abstract
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*/
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attach() { }
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/**
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* Clears listeners.
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*
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* @abstract
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*/
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unattach() {
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this.clearEvents();
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}
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/**
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* Add event handler in a way that will be auto-cleared on lightbox close
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*
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* TODO: Unit tests
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*
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* @param {string} name Name of event, like 'keydown'
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* @param {Function} handler Callback for the event
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*/
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handleEvent( name, handler ) {
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if ( this.eventsRegistered[ name ] === undefined ) {
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this.eventsRegistered[ name ] = [];
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}
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this.eventsRegistered[ name ].push( handler );
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$( document ).on( name, handler );
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}
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/**
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* Remove all events that have been registered on this element.
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*
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* TODO: Unit tests
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*/
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clearEvents() {
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for ( const ev in this.eventsRegistered ) {
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const handlers = this.eventsRegistered[ ev ];
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while ( handlers.length > 0 ) {
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$( document ).off( ev, handlers.pop() );
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}
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}
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}
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}
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OO.mixinClass( UiElement, OO.EventEmitter );
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module.exports = UiElement;
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