2 YUI 3.13.0 (build 508226d)
3 Copyright 2013 Yahoo! Inc. All rights reserved.
4 Licensed under the BSD License.
5 http://yuilibrary.com/license/
8 YUI.add('event-touch', function (Y, NAME) {
11 Adds touch event facade normalization properties (touches, changedTouches, targetTouches etc.) to the DOM event facade. Adds
12 touch events to the DOM events whitelist.
15 YUI().use('event-touch', function (Y) {
16 Y.one('#myDiv').on('touchstart', function(e) {
21 @submodule event-touch
24 ROTATION = "rotation",
25 IDENTIFIER = "identifier",
30 * Adds touch event facade normalization properties to the DOM event facade
35 * @param ev {Event} the DOM event
36 * @param currentTarget {HTMLElement} the element the listener was attached to
37 * @param wrapper {Event.Custom} the custom event wrapper for this DOM event
39 Y.DOMEventFacade.prototype._touch = function(e, currentTarget, wrapper) {
41 var i,l, etCached, et,touchCache;
47 * Array of individual touch events for touch points that are still in
48 * contact with the touch surface.
51 * @type {DOMEventFacade[]}
56 for (i = 0, l = e.touches.length; i < l; ++i) {
58 touchCache[Y.stamp(et)] = this.touches[i] = new Y.DOMEventFacade(et, currentTarget, wrapper);
62 if (e.targetTouches) {
65 * Array of individual touch events still in contact with the touch
66 * surface and whose `touchstart` event occurred inside the same taregt
67 * element as the current target element.
69 * @property targetTouches
70 * @type {DOMEventFacade[]}
72 this.targetTouches = [];
74 for (i = 0, l = e.targetTouches.length; i < l; ++i) {
75 et = e.targetTouches[i];
76 etCached = touchCache && touchCache[Y.stamp(et, true)];
78 this.targetTouches[i] = etCached || new Y.DOMEventFacade(et, currentTarget, wrapper);
83 if (e.changedTouches) {
86 An array of event-specific touch events.
88 For `touchstart`, the touch points that became active with the current
91 For `touchmove`, the touch points that have changed since the last
94 For `touchend`, the touch points that have been removed from the touch
97 @property changedTouches
98 @type {DOMEventFacade[]}
100 this.changedTouches = [];
102 for (i = 0, l = e.changedTouches.length; i < l; ++i) {
103 et = e.changedTouches[i];
104 etCached = touchCache && touchCache[Y.stamp(et, true)];
106 this.changedTouches[i] = etCached || new Y.DOMEventFacade(et, currentTarget, wrapper);
112 this[SCALE] = e[SCALE];
116 this[ROTATION] = e[ROTATION];
119 if (IDENTIFIER in e) {
120 this[IDENTIFIER] = e[IDENTIFIER];
124 //Adding MSPointer events to whitelisted DOM Events. MSPointer event payloads
125 //have the same properties as mouse events.
126 if (Y.Node.DOM_EVENTS) {
127 Y.mix(Y.Node.DOM_EVENTS, {
141 //Add properties to Y.EVENT.GESTURE_MAP based on feature detection.
142 if ((win && ("ontouchstart" in win)) && !(Y.UA.chrome && Y.UA.chrome < 6)) {
143 GESTURE_MAP.start = ["touchstart", "mousedown"];
144 GESTURE_MAP.end = ["touchend", "mouseup"];
145 GESTURE_MAP.move = ["touchmove", "mousemove"];
146 GESTURE_MAP.cancel = ["touchcancel", "mousecancel"];
151 else if (win && ("msPointerEnabled" in win.navigator)) {
152 GESTURE_MAP.start = "MSPointerDown";
153 GESTURE_MAP.end = "MSPointerUp";
154 GESTURE_MAP.move = "MSPointerMove";
155 GESTURE_MAP.cancel = "MSPointerCancel";
159 GESTURE_MAP.start = "mousedown";
160 GESTURE_MAP.end = "mouseup";
161 GESTURE_MAP.move = "mousemove";
162 GESTURE_MAP.cancel = "mousecancel";
166 * A object literal with keys "start", "end", and "move". The value for each key is a
167 * string representing the event for that environment. For touch environments, the respective
168 * values are "touchstart", "touchend" and "touchmove". Mouse and MSPointer environments are also
169 * supported via feature detection.
171 * @property _GESTURE_MAP
175 Y.Event._GESTURE_MAP = GESTURE_MAP;
178 }, '3.13.0', {"requires": ["node-base"]});