Bug 810359 - Introduce haptic feedback. r=davidb

accessible/src/jsat/AccessFu.jsm

@@ -301,6 +301,10 @@ var Output = {
     }
   },
 
+  Haptic: function Haptic(aDetails, aBrowser) {
+    this.chromeWin.navigator.vibrate(aDetails.pattern);
+  },
+
   _adjustBounds: function(aJsonBounds, aBrowser) {
     let bounds = new Rect(aJsonBounds.left, aJsonBounds.top,
                           aJsonBounds.right - aJsonBounds.left,

accessible/src/jsat/EventManager.jsm

@@ -26,6 +26,7 @@ this.EventManager = {
 
         if (Utils.MozBuildApp == 'b2g') {
           this.presenters.push(new SpeechPresenter());
+          this.presenters.push(new HapticPresenter());
         } else if (Utils.MozBuildApp == 'mobile/android') {
           this.presenters.push(new AndroidPresenter());
         }

accessible/src/jsat/Presenters.jsm

@@ -17,6 +17,7 @@ this.EXPORTED_SYMBOLS = ['VisualPresenter',
                          'AndroidPresenter',
                          'DummyAndroidPresenter',
                          'SpeechPresenter',
+                         'HapticPresenter',
                          'PresenterContext'];
 
 /**
@@ -111,7 +112,7 @@ Presenter.prototype = {
  * Visual presenter. Draws a box around the virtual cursor's position.
  */
 
-this.VisualPresenter = function VisualPresenter() {}
+this.VisualPresenter = function VisualPresenter() {};
 
 VisualPresenter.prototype = {
   __proto__: Presenter.prototype,
@@ -179,7 +180,7 @@ VisualPresenter.prototype = {
  * Android presenter. Fires Android a11y events.
  */
 
-this.AndroidPresenter = function AndroidPresenter() {}
+this.AndroidPresenter = function AndroidPresenter() {};
 
 AndroidPresenter.prototype = {
   __proto__: Presenter.prototype,
@@ -332,7 +333,7 @@ AndroidPresenter.prototype = {
  * A speech presenter for direct TTS output
  */
 
-this.SpeechPresenter = function SpeechPresenter() {}
+this.SpeechPresenter = function SpeechPresenter() {};
 
 SpeechPresenter.prototype = {
   __proto__: Presenter.prototype,
@@ -372,6 +373,24 @@ SpeechPresenter.prototype = {
   }
 };
 
+/**
+ * A haptic presenter
+ */
+
+this.HapticPresenter = function HapticPresenter() {};
+
+HapticPresenter.prototype = {
+  __proto__: Presenter.prototype,
+
+  type: 'Haptic',
+
+  PIVOT_CHANGE_PATTHERN: [20],
+
+  pivotChanged: function HapticPresenter_pivotChanged(aContext, aReason) {
+    return { type: this.type, details: { pattern: this.PIVOT_CHANGE_PATTHERN } };
+  }
+};
+
 /**
  * PresenterContext: An object that generates and caches context information
  * for a given accessible and its relationship with another accessible.