Bug 920831 - MozInputMethod's init should only return undefined. r=bz

b2g/components/MozKeyboard.js

@@ -199,8 +199,6 @@ MozKeyboard.prototype = {
   }
 };
 
-const TESTING_ENABLED_PREF = "dom.mozInputMethod.testing";
-
 /*
  * A WeakMap to map input method iframe window to its active status.
  */
@@ -317,24 +315,6 @@ MozInputMethod.prototype = {
   }),
 
   init: function mozInputMethodInit(win) {
-    // Check if we're in testing mode.
-    let isTesting = false;
-    try {
-      isTesting = Services.prefs.getBoolPref(TESTING_ENABLED_PREF);
-    } catch (e) {}
-
-    // Don't bypass the permission check if not in testing mode.
-    if (!isTesting) {
-      let principal = win.document.nodePrincipal;
-      let perm = Services.perms
-                 .testExactPermissionFromPrincipal(principal, "keyboard");
-      if (perm != Ci.nsIPermissionManager.ALLOW_ACTION) {
-        dump("No permission to use the keyboard API for " +
-             principal.origin + "\n");
-        return null;
-      }
-    }
-
     this._window = win;
     this._mgmt = new MozInputMethodManager(win);
     this.innerWindowID = win.QueryInterface(Ci.nsIInterfaceRequestor)

dom/base/Navigator.cpp

@@ -1786,6 +1786,17 @@ bool Navigator::HasPushNotificationsSupport(JSContext* /* unused */,
   return win && Preferences::GetBool("services.push.enabled", false) && CheckPermission(win, "push");
 }
 
+#ifdef MOZ_B2G
+/* static */
+bool Navigator::HasInputMethodSupport(JSContext* /* unused */,
+                                      JSObject* aGlobal)
+{
+  nsCOMPtr<nsPIDOMWindow> win = GetWindowFromGlobal(aGlobal);
+  return Preferences::GetBool("dom.mozInputMethod.testing", false) ||
+         (win && CheckPermission(win, "keyboard"));
+}
+#endif
+
 /* static */
 already_AddRefed<nsPIDOMWindow>
 Navigator::GetWindowFromGlobal(JSObject* aGlobal)

dom/base/Navigator.h

@@ -300,6 +300,10 @@ public:
   static bool HasPushNotificationsSupport(JSContext* /* unused */,
                                           JSObject* aGlobal);
 
+#ifdef MOZ_B2G
+  static bool HasInputMethodSupport(JSContext* /* unused */, JSObject* aGlobal);
+#endif
+
   nsPIDOMWindow* GetParentObject() const
   {
     return GetWindow();

dom/webidl/InputMethod.webidl

@@ -5,7 +5,7 @@
  */
 
 [JSImplementation="@mozilla.org/b2g-inputmethod;1",
- NavigatorProperty="mozInputMethod"]
+ NavigatorProperty="mozInputMethod", Func="Navigator::HasInputMethodSupport"]
 interface MozInputMethod : EventTarget {
   // Input Method Manager contain a few global methods expose to apps
   readonly attribute MozInputMethodManager mgmt;