Bug 989046 - a. Convert Gecko side messaging to use NativeJSContainer; r=blassey

mobile/android/base/GeckoAppShell.java

@@ -45,6 +45,7 @@ import org.mozilla.gecko.mozglue.generatorannotations.WrapElementForJNI;
 import org.mozilla.gecko.prompts.PromptService;
 import org.mozilla.gecko.util.GeckoEventListener;
 import org.mozilla.gecko.util.HardwareUtils;
+import org.mozilla.gecko.util.NativeJSContainer;
 import org.mozilla.gecko.util.ProxySelector;
 import org.mozilla.gecko.util.ThreadUtils;
 import org.mozilla.gecko.webapp.Allocator;
@@ -2287,8 +2288,9 @@ public class GeckoAppShell
     }
 
     @WrapElementForJNI(stubName = "HandleGeckoMessageWrapper")
-    public static void handleGeckoMessage(String message) {
-        sEventDispatcher.dispatchEvent(message);
+    public static void handleGeckoMessage(final NativeJSContainer message) {
+        sEventDispatcher.dispatchEvent(message.toString());
+        message.dispose();
     }
 
     @WrapElementForJNI

widget/android/AndroidBridge.cpp

@@ -37,6 +37,9 @@
 #include "StrongPointer.h"
 #include "mozilla/ClearOnShutdown.h"
 #include "nsPrintfCString.h"
+#include "NativeJSContainer.h"
+#include "nsContentUtils.h"
+#include "nsIScriptError.h"
 
 using namespace mozilla;
 using namespace mozilla::widget::android;
@@ -967,14 +970,15 @@ AndroidBridge::GetCurrentBatteryInformation(hal::BatteryInformation* aBatteryInf
 }
 
 void
-AndroidBridge::HandleGeckoMessage(const nsAString &aMessage)
+AndroidBridge::HandleGeckoMessage(JSContext* cx, JS::HandleObject object)
 {
     ALOG_BRIDGE("%s", __PRETTY_FUNCTION__);
 
-    JNIEnv *env = GetJNIEnv();
-
+    JNIEnv* const env = GetJNIEnv();
     AutoLocalJNIFrame jniFrame(env, 1);
-    mozilla::widget::android::GeckoAppShell::HandleGeckoMessageWrapper(aMessage);
+    const jobject message =
+        mozilla::widget::CreateNativeJSContainer(env, cx, object);
+    GeckoAppShell::HandleGeckoMessageWrapper(message);
 }
 
 nsresult
@@ -1494,9 +1498,42 @@ nsAndroidBridge::~nsAndroidBridge()
 }
 
 /* void handleGeckoEvent (in AString message); */
-NS_IMETHODIMP nsAndroidBridge::HandleGeckoMessage(const nsAString & message)
+NS_IMETHODIMP nsAndroidBridge::HandleGeckoMessage(JS::HandleValue val,
+                                                  JSContext *cx)
 {
-    AndroidBridge::Bridge()->HandleGeckoMessage(message);
+    if (val.isObject()) {
+        JS::RootedObject object(cx, &val.toObject());
+        AndroidBridge::Bridge()->HandleGeckoMessage(cx, object);
+        return NS_OK;
+    }
+
+    // Now handle legacy JSON messages.
+    if (!val.isString()) {
+        return NS_ERROR_INVALID_ARG;
+    }
+    JS::RootedString jsonStr(cx, val.toString());
+
+    size_t strLen = 0;
+    const jschar* strChar = JS_GetStringCharsAndLength(cx, jsonStr, &strLen);
+    if (!strChar) {
+        return NS_ERROR_UNEXPECTED;
+    }
+
+    JS::RootedValue jsonVal(cx);
+    if (!JS_ParseJSON(cx, strChar, strLen, &jsonVal) || !jsonVal.isObject()) {
+        return NS_ERROR_INVALID_ARG;
+    }
+
+    // Spit out a warning before sending the message.
+    nsContentUtils::ReportToConsoleNonLocalized(
+        NS_LITERAL_STRING("Use of JSON is deprecated. "
+            "Please pass Javascript objects directly to handleGeckoMessage."),
+        nsIScriptError::warningFlag,
+        NS_LITERAL_CSTRING("nsIAndroidBridge"),
+        nullptr);
+
+    JS::RootedObject object(cx, &jsonVal.toObject());
+    AndroidBridge::Bridge()->HandleGeckoMessage(cx, object);
     return NS_OK;
 }
 

widget/android/AndroidBridge.h

@@ -280,7 +280,7 @@ public:
     bool LockWindow(void *window, unsigned char **bits, int *width, int *height, int *format, int *stride);
     bool UnlockWindow(void *window);
 
-    void HandleGeckoMessage(const nsAString& message);
+    void HandleGeckoMessage(JSContext* cx, JS::HandleObject message);
 
     bool InitCamera(const nsCString& contentType, uint32_t camera, uint32_t *width, uint32_t *height, uint32_t *fps);
 

widget/android/GeneratedJNIWrappers.cpp

@@ -129,7 +129,7 @@ void GeckoAppShell::InitStubs(JNIEnv *jEnv) {
     jGetScreenOrientationWrapper = getStaticMethod("getScreenOrientation", "()S");
     jGetShowPasswordSetting = getStaticMethod("getShowPasswordSetting", "()Z");
     jGetSystemColoursWrapper = getStaticMethod("getSystemColors", "()[I");
-    jHandleGeckoMessageWrapper = getStaticMethod("handleGeckoMessage", "(Ljava/lang/String;)V");
+    jHandleGeckoMessageWrapper = getStaticMethod("handleGeckoMessage", "(Lorg/mozilla/gecko/util/NativeJSContainer;)V");
     jHandleUncaughtException = getStaticMethod("handleUncaughtException", "(Ljava/lang/Thread;Ljava/lang/Throwable;)V");
     jHideProgressDialog = getStaticMethod("hideProgressDialog", "()V");
     jInitCameraWrapper = getStaticMethod("initCamera", "(Ljava/lang/String;III)[I");
@@ -697,16 +697,14 @@ jintArray GeckoAppShell::GetSystemColoursWrapper() {
     return ret;
 }
 
-void GeckoAppShell::HandleGeckoMessageWrapper(const nsAString& a0) {
+void GeckoAppShell::HandleGeckoMessageWrapper(jobject a0) {
     JNIEnv *env = AndroidBridge::GetJNIEnv();
     if (env->PushLocalFrame(1) != 0) {
         AndroidBridge::HandleUncaughtException(env);
         MOZ_ASSUME_UNREACHABLE("Exception should have caused crash.");
     }
 
-    jstring j0 = AndroidBridge::NewJavaString(env, a0);
-
-    env->CallStaticVoidMethod(mGeckoAppShellClass, jHandleGeckoMessageWrapper, j0);
+    env->CallStaticVoidMethod(mGeckoAppShellClass, jHandleGeckoMessageWrapper, a0);
     AndroidBridge::HandleUncaughtException(env);
     env->PopLocalFrame(nullptr);
 }

widget/android/GeneratedJNIWrappers.h

@@ -57,7 +57,7 @@ public:
     static int16_t GetScreenOrientationWrapper();
     static bool GetShowPasswordSetting();
     static jintArray GetSystemColoursWrapper();
-    static void HandleGeckoMessageWrapper(const nsAString& a0);
+    static void HandleGeckoMessageWrapper(jobject a0);
     static void HandleUncaughtException(jobject a0, jthrowable a1);
     static void HideProgressDialog();
     static jintArray InitCameraWrapper(const nsAString& a0, int32_t a1, int32_t a2, int32_t a3);

widget/android/nsIAndroidBridge.idl

@@ -63,10 +63,10 @@ interface nsIAndroidDisplayport : nsISupports {
   attribute float resolution;
 };
 
-[scriptable, uuid(2af84552-4f74-480d-b637-ce2bcd7148fc)]
+[scriptable, uuid(1beb70d3-70f3-4742-98cc-a3d301b26c0c)]
 interface nsIAndroidBridge : nsISupports
 {
-  void handleGeckoMessage(in AString message);
+  [implicit_jscontext] void handleGeckoMessage(in jsval message);
   attribute nsIAndroidBrowserApp browserApp;
   nsIAndroidDisplayport getDisplayPort(in boolean aPageSizeUpdate, in boolean isBrowserContentDisplayed, in int32_t tabId, in nsIAndroidViewport metrics);
   void contentDocumentChanged();