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ENGCOM-7290: Load appropriate slider widget on demand to improve perf…
…ormance #27616
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,151 @@ | ||
| /** | ||
| * Copyright © Magento, Inc. All rights reserved. | ||
| * See COPYING.txt for license details. | ||
| */ | ||
|
|
||
| define([ | ||
| 'jquery', | ||
| 'underscore', | ||
| 'jquery-ui-modules/slider' | ||
| ], function ($, _) { | ||
| 'use strict'; | ||
|
|
||
| /** | ||
| * Adds support for touch events for regular jQuery UI slider. | ||
| */ | ||
| $.widget('mage.touchSlider', $.ui.slider, { | ||
|
|
||
| /** | ||
| * Creates instance of widget. | ||
| * | ||
| * @override | ||
| */ | ||
| _create: function () { | ||
| _.bindAll( | ||
| this, | ||
| '_mouseDown', | ||
| '_mouseMove', | ||
| '_onTouchEnd' | ||
| ); | ||
|
|
||
| return this._superApply(arguments); | ||
| }, | ||
|
|
||
| /** | ||
| * Initializes mouse events on element. | ||
| * @override | ||
| */ | ||
| _mouseInit: function () { | ||
| var result = this._superApply(arguments); | ||
|
|
||
| this.element | ||
| .off('mousedown.' + this.widgetName) | ||
| .on('touchstart.' + this.widgetName, this._mouseDown); | ||
|
|
||
| return result; | ||
| }, | ||
|
|
||
| /** | ||
| * Elements' 'mousedown' event handler polyfill. | ||
| * @override | ||
| */ | ||
| _mouseDown: function (event) { | ||
| var prevDelegate = this._mouseMoveDelegate, | ||
| result; | ||
|
|
||
| event = this._touchToMouse(event); | ||
| result = this._super(event); | ||
|
|
||
| if (prevDelegate === this._mouseMoveDelegate) { | ||
| return result; | ||
| } | ||
|
|
||
| $(document) | ||
| .off('mousemove.' + this.widgetName) | ||
| .off('mouseup.' + this.widgetName); | ||
|
|
||
| $(document) | ||
| .on('touchmove.' + this.widgetName, this._mouseMove) | ||
| .on('touchend.' + this.widgetName, this._onTouchEnd) | ||
| .on('tochleave.' + this.widgetName, this._onTouchEnd); | ||
|
|
||
| return result; | ||
| }, | ||
|
|
||
| /** | ||
| * Documents' 'mousemove' event handler polyfill. | ||
| * | ||
| * @override | ||
| * @param {Event} event - Touch event object. | ||
| */ | ||
| _mouseMove: function (event) { | ||
| event = this._touchToMouse(event); | ||
|
|
||
| return this._super(event); | ||
| }, | ||
|
|
||
| /** | ||
| * Documents' 'touchend' event handler. | ||
| */ | ||
| _onTouchEnd: function (event) { | ||
| $(document).trigger('mouseup'); | ||
|
|
||
| return this._mouseUp(event); | ||
| }, | ||
|
|
||
| /** | ||
| * Removes previously assigned touch handlers. | ||
| * | ||
| * @override | ||
| */ | ||
| _mouseUp: function () { | ||
| this._removeTouchHandlers(); | ||
|
|
||
| return this._superApply(arguments); | ||
| }, | ||
|
|
||
| /** | ||
| * Removes previously assigned touch handlers. | ||
| * | ||
| * @override | ||
| */ | ||
| _mouseDestroy: function () { | ||
| this._removeTouchHandlers(); | ||
|
|
||
| return this._superApply(arguments); | ||
| }, | ||
|
|
||
| /** | ||
| * Removes touch events from document object. | ||
| */ | ||
| _removeTouchHandlers: function () { | ||
| $(document) | ||
| .off('touchmove.' + this.widgetName) | ||
| .off('touchend.' + this.widgetName) | ||
| .off('touchleave.' + this.widgetName); | ||
| }, | ||
|
|
||
| /** | ||
| * Adds properties to the touch event to mimic mouse event. | ||
| * | ||
| * @param {Event} event - Touch event object. | ||
| * @returns {Event} | ||
| */ | ||
| _touchToMouse: function (event) { | ||
| var orig = event.originalEvent, | ||
| touch = orig.touches[0]; | ||
|
|
||
| return _.extend(event, { | ||
| which: 1, | ||
| pageX: touch.pageX, | ||
| pageY: touch.pageY, | ||
| clientX: touch.clientX, | ||
| clientY: touch.clientY, | ||
| screenX: touch.screenX, | ||
| screenY: touch.screenY | ||
| }); | ||
| } | ||
| }); | ||
|
|
||
| return $.mage.touchSlider; | ||
| }); |