mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/VisualEditor
synced 2024-11-15 18:39:52 +00:00
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
109 lines
2.8 KiB
JavaScript
109 lines
2.8 KiB
JavaScript
/*!
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* VisualEditor user interface PagedDialog 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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* Paged dialog.
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*
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* A paged dialog has an outline in the left third, and a series of pages in the right two-thirds.
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* Pages can be added using the #addPage method, and later accessed using `this.pages[name]` or
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* through the #getPage method.
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*
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* @class
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* @abstract
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* @extends ve.ui.Dialog
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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.PagedDialog = function VeUiPagedDialog( surface ) {
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// Parent constructor
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ve.ui.Dialog.call( this, surface );
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// Properties
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this.pages = {};
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};
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/* Inheritance */
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ve.inheritClass( ve.ui.PagedDialog, ve.ui.Dialog );
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/* Methods */
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/**
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* Handle frame ready events.
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*
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* @method
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*/
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ve.ui.PagedDialog.prototype.initialize = function () {
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// Call parent method
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ve.ui.Dialog.prototype.initialize.call( this );
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// Properties
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this.outlinePanel = new ve.ui.PanelLayout( { '$$': this.$$, 'scroll': true } );
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this.pagesPanel = new ve.ui.StackPanelLayout( { '$$': this.$$ } );
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this.layout = new ve.ui.GridLayout(
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[this.outlinePanel, this.pagesPanel], { '$$': this.$$, 'widths': [1, 2] }
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);
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this.outlineWidget = new ve.ui.OutlineWidget( { '$$': this.$$ } );
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// Events
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this.outlineWidget.connect( this, { 'select': 'onOutlineSelect' } );
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// Initialization
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this.outlinePanel.$.append( this.outlineWidget.$ ).addClass( 've-ui-pagedDialog-outlinePanel' );
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this.pagesPanel.$.addClass( 've-ui-pagedDialog-pagesPanel' );
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this.$body.append( this.layout.$ );
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};
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/**
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* Handle outline select events.
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*
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* @method
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* @param {ve.ui.OptionWidget} item Selected item
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*/
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ve.ui.PagedDialog.prototype.onOutlineSelect = function ( item ) {
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if ( item ) {
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this.pagesPanel.showItem( this.pages[item.getData()] );
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}
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};
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/**
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* Add a page to the dialog.
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*
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* @method
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* @param {string} name Symbolic name of page
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* @param {jQuery|string} [label] Page label
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* @param {string} [icon] Symbolic name of icon
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* @chainable
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*/
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ve.ui.PagedDialog.prototype.addPage = function ( name, label, icon ) {
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var config = { '$$': this.$$, 'icon': icon, 'label': label || name };
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// Create and add page panel and outline item
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this.pages[name] = new ve.ui.PagePanelLayout( config );
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this.pagesPanel.addItems( [this.pages[name]] );
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this.outlineWidget.addItems( [ new ve.ui.OutlineItemWidget( name, config ) ] );
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// Auto-select first item when nothing is selected yet
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if ( !this.outlineWidget.getSelectedItem() ) {
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this.outlineWidget.selectItem( this.outlineWidget.getClosestSelectableItem( 0 ) );
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}
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return this;
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};
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/**
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* Get a page by name.
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*
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* @method
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* @param {string} name Symbolic name of page
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* @returns {ve.ui.PagePanelLayout|undefined} Page, if found
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*/
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ve.ui.PagedDialog.prototype.getPage = function ( name ) {
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return this.pages[name];
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};
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