Bug 861496 - Replace #ifdef MOZ_SYS_MSG by a preference. r=fabrice

b2g/app/b2g.js

@@ -517,6 +517,8 @@ pref("ui.click_hold_context_menus.delay", 750);
 // Enable device storage
 pref("device.storage.enabled", true);
 
+// Enable system message
+pref("dom.sysmsg.enabled", true);
 pref("media.plugins.enabled", false);
 pref("media.omx.enabled", true);
 

b2g/confvars.sh

@@ -47,7 +47,6 @@ MOZ_MEDIA_NAVIGATOR=1
 MOZ_APP_ID={3c2e2abc-06d4-11e1-ac3b-374f68613e61}
 MOZ_EXTENSION_MANAGER=1
 
-MOZ_SYS_MSG=1
 MOZ_TIME_MANAGER=1
 
 MOZ_B2G_CERTDATA=1

configure.in

@@ -4263,7 +4263,6 @@ MOZ_WEBSMS_BACKEND=
 MOZ_ANDROID_WALLPAPER=
 MOZ_ANDROID_BEAM=
 ACCESSIBILITY=1
-MOZ_SYS_MSG=
 MOZ_TIME_MANAGER=
 MOZ_PAY=
 MOZ_AUDIO_CHANNEL_MANAGER=
@@ -7642,14 +7641,6 @@ if test -n "$MOZ_B2G_BT"; then
 fi
 AC_SUBST(MOZ_B2G_BT)
 
-dnl ========================================================
-dnl = Enable Support for System Messages API
-dnl ========================================================
-if test -n "$MOZ_SYS_MSG"; then
-    AC_DEFINE(MOZ_SYS_MSG)
-fi
-AC_SUBST(MOZ_SYS_MSG)
-
 dnl ========================================================
 dnl = Enable Support for Time Manager API
 dnl ========================================================

dom/activities/src/Activity.h

@@ -8,6 +8,7 @@
 #include "DOMRequest.h"
 #include "mozilla/dom/BindingDeclarations.h"
 #include "nsIActivityProxy.h"
+#include "mozilla/Preferences.h"
 
 #define NS_DOMACTIVITY_CID                          \
  {0x1c5b0930, 0xc90c, 0x4e9c, {0xaf, 0x4e, 0xb0, 0xb7, 0xa6, 0x59, 0xb4, 0xed}}
@@ -28,11 +29,7 @@ public:
 
   static bool PrefEnabled()
   {
-#ifdef MOZ_SYS_MSG
-    return true;
-#else
-    return false;
-#endif
+    return Preferences::GetBool("dom.sysmsg.enabled", false);
   }
 
   static already_AddRefed<Activity>

dom/apps/src/Webapps.jsm

@@ -25,6 +25,14 @@ function debug(aMsg) {
   //dump("-*-*- Webapps.jsm : " + aMsg + "\n");
 }
 
+let cachedSysMsgPref = null;
+function supportSystemMessages() {
+  if (_sysMsgPref === null) {
+    cachedSysMsgPref = Services.prefs.getBoolPref("dom.sysmsg.enabled");
+  }
+  return cachedSysMsgPref;
+}
+
 // Minimum delay between two progress events while downloading, in ms.
 const MIN_PROGRESS_EVENT_DELAY = 1000;
 
@@ -180,9 +188,9 @@ this.DOMApplicationRegistry = {
     for (let id in this.webapps) {
       ids.push({ id: id });
     }
-#ifdef MOZ_SYS_MSG
+    if (supportSystemMessages()) {
       this._processManifestForIds(ids, aRunUpdate);
-#else
+    } else {
       // Read the CSPs. If MOZ_SYS_MSG is defined this is done on
       // _processManifestForIds so as to not reading the manifests
       // twice
@@ -194,7 +202,7 @@ this.DOMApplicationRegistry = {
 
       // Nothing else to do but notifying we're ready.
       this.notifyAppsRegistryReady();
-#endif
+    }
   },
 
   updatePermissionsForApp: function updatePermissionsForApp(aId) {
@@ -439,7 +447,6 @@ this.DOMApplicationRegistry = {
     }).bind(this));
   },
 
-#ifdef MOZ_SYS_MSG
   // |aEntryPoint| is either the entry_point name or the null in which case we
   // use the root of the manifest.
   _registerSystemMessagesForEntryPoint: function(aManifest, aApp, aEntryPoint) {
@@ -657,7 +664,6 @@ this.DOMApplicationRegistry = {
       this._registerActivitiesForApps(appsToRegister, aRunUpdate);
     }).bind(this));
   },
-#endif
 
   observe: function(aSubject, aTopic, aData) {
     if (aTopic == "xpcom-shutdown") {
@@ -1284,16 +1290,17 @@ this.DOMApplicationRegistry = {
   updateAppHandlers: function(aOldManifest, aNewManifest, aApp) {
     debug("updateAppHandlers: old=" + aOldManifest + " new=" + aNewManifest);
     this.notifyAppsRegistryStart();
-#ifdef MOZ_SYS_MSG
+
+    if (supportSystemMessages()) {
       if (aOldManifest) {
         this._unregisterActivities(aOldManifest, aApp);
       }
       this._registerSystemMessages(aNewManifest, aApp);
       this._registerActivities(aNewManifest, aApp, true);
-#else
+    } else {
       // Nothing else to do but notifying we're ready.
       this.notifyAppsRegistryReady();
-#endif
+    }
   },
 
   checkForUpdate: function(aData, aMm) {
@@ -2486,11 +2493,11 @@ this.DOMApplicationRegistry = {
       let appNote = JSON.stringify(AppsUtils.cloneAppObject(app));
       appNote.id = id;
 
-#ifdef MOZ_SYS_MSG
+      if (supportSystemMessages()) {
         this._readManifests([{ id: id }], (function unregisterManifest(aResult) {
           this._unregisterActivities(aResult[0].manifest, app);
         }).bind(this));
-#endif
+      }
 
       let dir = this._getAppDir(id);
       try {

dom/base/Navigator.cpp

@@ -225,11 +225,9 @@ Navigator::Invalidate()
 
   mCameraManager = nullptr;
 
-#ifdef MOZ_SYS_MSG
   if (mMessagesManager) {
     mMessagesManager = nullptr;
   }
-#endif
 
 #ifdef MOZ_AUDIO_CHANNEL_MANAGER
   if (mAudioChannelManager) {
@@ -1411,7 +1409,6 @@ Navigator::GetMozBluetooth(nsIDOMBluetoothManager** aBluetooth)
 //*****************************************************************************
 //    nsNavigator::nsIDOMNavigatorSystemMessages
 //*****************************************************************************
-#ifdef MOZ_SYS_MSG
 nsresult
 Navigator::EnsureMessagesManager()
 {
@@ -1439,34 +1436,33 @@ Navigator::EnsureMessagesManager()
 
   return NS_OK;
 }
-#endif
 
 NS_IMETHODIMP
 Navigator::MozHasPendingMessage(const nsAString& aType, bool *aResult)
 {
-#ifdef MOZ_SYS_MSG
+  if (!Preferences::GetBool("dom.sysmsg.enabled", false)) {
+    return NS_ERROR_NOT_IMPLEMENTED;
+  }
+
   *aResult = false;
   nsresult rv = EnsureMessagesManager();
   NS_ENSURE_SUCCESS(rv, rv);
 
   return mMessagesManager->MozHasPendingMessage(aType, aResult);
-#else
-  return NS_ERROR_NOT_IMPLEMENTED;
-#endif
 }
 
 NS_IMETHODIMP
 Navigator::MozSetMessageHandler(const nsAString& aType,
                                 nsIDOMSystemMessageCallback *aCallback)
 {
-#ifdef MOZ_SYS_MSG
+  if (!Preferences::GetBool("dom.sysmsg.enabled", false)) {
+    return NS_ERROR_NOT_IMPLEMENTED;
+  }
+
   nsresult rv = EnsureMessagesManager();
   NS_ENSURE_SUCCESS(rv, rv);
 
   return mMessagesManager->MozSetMessageHandler(aType, aCallback);
-#else
-  return NS_ERROR_NOT_IMPLEMENTED;
-#endif
 }
 
 //*****************************************************************************

dom/base/Navigator.h

@@ -186,10 +186,9 @@ public:
    */
   void OnNavigation();
 
-#ifdef MOZ_SYS_MSG
   // Helper to initialize mMessagesManager.
   nsresult EnsureMessagesManager();
-#endif
+
   NS_DECL_NSIDOMNAVIGATORCAMERA
 
 private:

dom/base/nsDOMClassInfo.cpp

@@ -281,6 +281,8 @@ using mozilla::dom::workers::ResolveWorkerClasses;
 
 #include "nsIDOMMediaQueryList.h"
 
+#include "mozilla/dom/Activity.h"
+
 #include "nsDOMTouchEvent.h"
 
 #include "nsWrapperCacheInlines.h"
@@ -1662,9 +1664,8 @@ nsDOMClassInfo::Init()
     DOM_CLASSINFO_MAP_ENTRY(nsIDOMNavigatorBluetooth)
 #endif
     DOM_CLASSINFO_MAP_ENTRY(nsIDOMNavigatorCamera)
-#ifdef MOZ_SYS_MSG
-    DOM_CLASSINFO_MAP_ENTRY(nsIDOMNavigatorSystemMessages)
-#endif
+    DOM_CLASSINFO_MAP_CONDITIONAL_ENTRY(nsIDOMNavigatorSystemMessages,
+                                        Activity::PrefEnabled())
 #ifdef MOZ_TIME_MANAGER
     DOM_CLASSINFO_MAP_ENTRY(nsIDOMMozNavigatorTime)
 #endif

modules/libpref/src/init/all.js

@@ -751,6 +751,9 @@ pref("dom.experimental_forms", false);
 // Don't enable <input type=range> yet:
 pref("dom.experimental_forms_range", true);
 
+// Enables system messages and activities
+pref("dom.sysmsg.enabled", false);
+
 // Allocation Threshold for Workers
 pref("dom.workers.mem.gc_allocation_threshold_mb", 30);