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define(function(require) { |
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'use strict'; |
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var SwipeActionsManager; |
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var $ = require('jquery'); |
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var _ = require('underscore'); |
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var mediator = require('oroui/js/mediator'); |
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var error = require('oroui/js/error'); |
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var DEFAULT_OPTIONS = { |
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minDistanceXAxis: 30, |
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maxDistanceYAxis: 30, |
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maxAllowedTime: 1000 |
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}; |
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/** |
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* Swipe actions on mobile devices |
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* |
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* @param {String} elementSelector |
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* @param {Object} options |
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* @returns {*} |
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* @constructor |
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*/ |
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SwipeActionsManager = function(elementSelector, options) { |
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if (!elementSelector) { |
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return error.showErrorInConsole('"elementSelector" should be defined'); |
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} |
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this.direction = null; |
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this.touchStartCoords = null; |
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this.touchEndCoords = null; |
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this.elapsedTime = 0; |
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this.startTime = 0; |
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this.$el = $(elementSelector); |
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this.swipeInitialize(options); |
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}; |
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SwipeActionsManager.prototype = { |
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/** |
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* Initialize, merge options |
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* |
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* @param {Object} options |
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*/ |
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swipeInitialize: function(options) { |
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_.extend(this, _.defaults(_.pick(options, |
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['minDistanceXAxis', 'maxDistanceYAxis', 'maxAllowedTime'] |
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), DEFAULT_OPTIONS)); |
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this._bindEvents(); |
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}, |
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/** |
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* Bind touch events |
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* @private |
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*/ |
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_bindEvents: function() { |
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this.$el.on('touchstart', _.bind(this._swipeStart, this)); |
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this.$el.on('touchend', _.bind(this._swipeEnd, this)); |
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}, |
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/** |
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* Handler for start touch |
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* |
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* @param {jQuery.Event} event |
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* @private |
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*/ |
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_swipeStart: function(event) { |
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event = ('changedTouches' in event) ? event.changedTouches[0] : event; |
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this.touchStartCoords = { |
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x: event.pageX, |
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y: event.pageY |
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}; |
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this.startTime = new Date().getTime(); |
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}, |
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/** |
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* Handler for end touch and fire external mediator event |
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* |
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* @param {jQuery.Event} event |
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* @private |
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*/ |
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_swipeEnd: function(event) { |
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event = ('changedTouches' in event) ? event.changedTouches[0] : event; |
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this.touchEndCoords = { |
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x: event.pageX - this.touchStartCoords.x, |
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y: event.pageY - this.touchStartCoords.y |
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}; |
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this.elapsedTime = new Date().getTime() - this.startTime; |
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if (this.elapsedTime <= this.maxAllowedTime) { |
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if ( |
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Math.abs(this.touchEndCoords.x) >= this.minDistanceXAxis && |
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Math.abs(this.touchEndCoords.y) <= this.maxDistanceYAxis |
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) { |
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this.direction = (this.touchEndCoords.x < 0) ? 'left' : 'right'; |
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mediator.trigger('swipe-action-' + this.direction); |
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} |
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} |
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} |
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}; |
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return SwipeActionsManager; |
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}); |
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