Add touch events

Author: tindzk

src/main/scala/org/scalajs/dom/ext/Extensions.scala

@@ -1,9 +1,12 @@
 package org.scalajs.dom.ext
 
-import org.scalajs.dom.html
+import scala.language.implicitConversions
+import scala.concurrent.{Promise, Future}
 
 import scala.scalajs.js
+
 import org.scalajs.dom
+import org.scalajs.dom.{html, raw}
 
 /**
  * Used to extend out javascript *Collections to make them usable as normal
@@ -151,7 +154,7 @@ object KeyCode {
  val z = 90
 }
 
-import scala.concurrent.{Promise, Future}
+
 /**
  * Thrown when `Ajax.get` or `Ajax.post` receives a non-20X response code.
  * Contains the XMLHttpRequest that resulted in that response
@@ -245,3 +248,58 @@ sealed class Storage(domStorage: dom.Storage) {
 object SessionStorage extends Storage(dom.sessionStorage)
 
 object LocalStorage extends Storage(dom.localStorage)
+
+/**
+ * W3C recommendation for touch events
+ *
+ * @see http://www.w3.org/TR/touch-events/
+ */
+trait TouchEvents extends js.Object {
+ /**
+ * The touchstart event is fired when a touch point is placed on the touch
+ * surface.
+ *
+ * MDN
+ */
+ var ontouchstart: js.Function1[raw.TouchEvent, _] = js.native
+
+ /**
+ * The touchmove event is fired when a touch point is moved along the touch
+ * surface.
+ *
+ * MDN
+ */
+ var ontouchmove: js.Function1[raw.TouchEvent, _] = js.native
+
+ /**
+ * The touchend event is fired when a touch point is removed from the touch
+ * surface.
+ *
+ * MDN
+ */
+ var ontouchend: js.Function1[raw.TouchEvent, _] = js.native
+
+ /**
+ * The touchcancel event is fired when a touch point has been disrupted in an
+ * implementation-specific manner (too many touch points for example).
+ *
+ * MDN
+ */
+ var ontouchcancel: js.Function1[raw.TouchEvent, _] = js.native
+}
+
+/**
+ * Implicits to add touch event handlers to [[raw.HTMLDocument]] and
+ * [[raw.Window]].
+ *
+ * @note Touch events may not be available on all modern browsers. See
+ * http://www.quirksmode.org/mobile/tableTouch.html#t00 for a compatibility
+ * table.
+ */
+object TouchEvents {
+ implicit def HTMLDocumentToTouchEvents(html: raw.HTMLDocument): TouchEvents =
+ html.asInstanceOf[TouchEvents]
+
+ implicit def WindowToTouchEvents(window: raw.Window): TouchEvents =
+ window.asInstanceOf[TouchEvents]
+}