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https://gerrit.wikimedia.org/r/mediawiki/extensions/VisualEditor
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7233ea8f1b
The EventEmitter API we inherited from Node.js and then bastardized was getting awkward and cumbersome. The number of uses of ve.bind was getting out of control, and removing events meant caching the bound method in a property. Many of the "features" of EventEmitter wasn't even being used, some causing overhead, others just causing bloat. This change cleans up how EventEmitter is used throughout the codebase. The new event emitter API includes: * emit - identical to the previous API, no longer throws an error if you emit error without a handler * once - identical to the previous API, still introduces a wrapper* on - compatible with the previous API but has some new features * off - identical to removeListener in the previous API * connect - very similar to addListenerMethods but doesn't wrap callbacks in closures anymore * disconnect - new, basically the opposite of addListenerMethods Another change that is made in this commit is mixing in rather than inheriting from EventEmitter. Finally, there are changes throughout the codebase anywhere connect/disconnect could be used. Change-Id: Ic3085d39172a8a719ce7f036690f673e59848d3a
134 lines
2.7 KiB
JavaScript
134 lines
2.7 KiB
JavaScript
/*!
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* VisualEditor UserInterface WindowSet class.
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*
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* @copyright 2011-2013 VisualEditor Team and others; see AUTHORS.txt
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* @license The MIT License (MIT); see LICENSE.txt
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*/
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/**
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* UserInterface window set.
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*
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* @class
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* @mixins ve.EventEmitter
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*
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* @constructor
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* @param {ve.Surface} surface
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*/
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ve.ui.WindowSet = function VeUiWindowSet( surface, factory ) {
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// Mixin constructors
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ve.EventEmitter.call( this );
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// Properties
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this.surface = surface;
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this.factory = factory;
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this.$ = $( '<div>' );
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this.windows = {};
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this.currentWindow = null;
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// Initialization
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this.$.addClass( 've-ui-windowSet' );
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};
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/* Inheritance */
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ve.mixinClass( ve.ui.WindowSet, ve.EventEmitter );
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/* Events */
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/**
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* @event setup
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* @param {ve.ui.Window} win Window that's been setup
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*/
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/**
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* @event open
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* @param {ve.ui.Window} win Window that's been opened
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*/
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/**
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* @event close
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* @param {ve.ui.Window} win Window that's been closed
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* @param {string} action Action that caused the window to be closed
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*/
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/* Methods */
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/**
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* Handle a window being setup.
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*
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* @method
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* @param {ve.ui.Window} win Window that's been setup
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* @emits setup
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*/
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ve.ui.WindowSet.prototype.onWindowSetup = function ( win ) {
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this.emit( 'setup', win );
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};
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/**
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* Handle a window being opened.
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*
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* @method
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* @param {ve.ui.Window} win Window that's been opened
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* @emits open
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*/
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ve.ui.WindowSet.prototype.onWindowOpen = function ( win ) {
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this.currentWindow = win;
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this.emit( 'open', win );
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};
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/**
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* Handle a window being closed.
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*
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* @method
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* @param {ve.ui.Window} win Window that's been opened
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* @param {boolean} accept Changes have been accepted
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* @emits close
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*/
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ve.ui.WindowSet.prototype.onWindowClose = function ( win, accept ) {
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this.currentWindow = null;
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this.emit( 'close', win, accept );
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};
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/**
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* Get the current window.
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*
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* @method
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* @returns {ve.ui.Window} Current window
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*/
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ve.ui.WindowSet.prototype.getCurrent = function () {
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return this.currentWindow;
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};
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/**
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* Opens a given window.
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*
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* Any already open dialog will be closed.
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*
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* @method
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* @param {string} name Symbolic name of window
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* @chainable
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*/
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ve.ui.WindowSet.prototype.open = function ( name ) {
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var win;
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if ( !this.factory.lookup( name ) ) {
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throw new Error( 'Unknown window: ' + name );
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}
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if ( this.currentWindow ) {
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throw new Error( 'Cannot open another window while another one is active' );
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}
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if ( !( name in this.windows ) ) {
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win = this.windows[name] = this.factory.create( name, this.surface );
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win.connect( this, {
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'setup': ['onWindowSetup', win],
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'open': ['onWindowOpen', win],
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'close': ['onWindowClose', win]
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} );
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this.$.append( win.$ );
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}
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this.windows[name].open();
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return this;
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};
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