Bug 775657 - Added initial B2G support and speech presenter. r=davidb

accessible/src/jsat/AccessFu.jsm

@@ -63,8 +63,10 @@ var AccessFu = {
     this.addPresenter(new VisualPresenter());
 
     // Implicitly add the Android presenter on Android.
-    if (Utils.OS == 'Android')
+    if (Utils.MozBuildApp == 'mobile/android')
       this.addPresenter(new AndroidPresenter());
+    else if (Utils.MozBuildApp == 'b2g')
+      this.addPresenter(new SpeechPresenter());
 
     VirtualCursorController.attach(this.chromeWin);
 

accessible/src/jsat/Presenters.jsm

@@ -15,6 +15,7 @@ Cu.import('resource://gre/modules/accessibility/UtteranceGenerator.jsm');
 var EXPORTED_SYMBOLS = ['VisualPresenter',
                         'AndroidPresenter',
                         'DummyAndroidPresenter',
+                        'SpeechPresenter',
                         'PresenterContext'];
 
 /**
@@ -396,6 +397,41 @@ DummyAndroidPresenter.prototype = {
   }
 };
 
+/**
+ * A speech presenter for direct TTS output
+ */
+
+function SpeechPresenter() {}
+
+SpeechPresenter.prototype = {
+  __proto__: Presenter.prototype,
+
+
+  pivotChanged: function SpeechPresenter_pivotChanged(aContext, aReason) {
+    if (!aContext.accessible)
+      return;
+
+    let output = [];
+
+    aContext.newAncestry.forEach(
+      function(acc) {
+        output.push.apply(output, UtteranceGenerator.genForObject(acc));
+      }
+    );
+
+    output.push.apply(output,
+                      UtteranceGenerator.genForObject(aContext.accessible));
+
+    aContext.subtreePreorder.forEach(
+      function(acc) {
+        output.push.apply(output, UtteranceGenerator.genForObject(acc));
+      }
+    );
+
+    Logger.info('SPEAK', '"' + output.join(' ') + '"');
+  }
+}
+
 /**
  * PresenterContext: An object that generates and caches context information
  * for a given accessible and its relationship with another accessible.

accessible/src/jsat/Utils.jsm

@@ -16,6 +16,19 @@ var gAccRetrieval = Cc['@mozilla.org/accessibleRetrieval;1'].
   getService(Ci.nsIAccessibleRetrieval);
 
 var Utils = {
+  _buildAppMap: {
+    '{3c2e2abc-06d4-11e1-ac3b-374f68613e61}': 'b2g',
+    '{ec8030f7-c20a-464f-9b0e-13a3a9e97384}': 'browser',
+    '{aa3c5121-dab2-40e2-81ca-7ea25febc110}': 'mobile/android',
+    '{a23983c0-fd0e-11dc-95ff-0800200c9a66}': 'mobile/xul'
+  },
+
+  get MozBuildApp() {
+    if (!this._buildApp)
+      this._buildApp = this._buildAppMap[Services.appinfo.ID];
+    return this._buildApp;
+  },
+
   get OS() {
     if (!this._OS)
       this._OS = Services.appinfo.OS;
@@ -40,21 +53,27 @@ var Utils = {
   },
 
   getBrowserApp: function getBrowserApp(aWindow) {
-    switch (this.OS) {
-      case 'Android':
+    switch (this.MozBuildApp) {
+      case 'mobile/android':
         return aWindow.BrowserApp;
-      default:
+      case 'browser':
         return aWindow.gBrowser;
+      case 'b2g':
+        return aWindow.shell;
+      default:
+        return null;
     }
   },
 
   getCurrentContentDoc: function getCurrentContentDoc(aWindow) {
+    if (this.MozBuildApp == "b2g")
+      return this.getBrowserApp(aWindow).contentBrowser.contentDocument;
     return this.getBrowserApp(aWindow).selectedBrowser.contentDocument;
   },
 
   getViewport: function getViewport(aWindow) {
-    switch (this.OS) {
-      case 'Android':
+    switch (this.MozBuildApp) {
+      case 'mobile/android':
         return aWindow.BrowserApp.selectedTab.getViewport();
       default:
         return null;