Added new private API for Android and onNewIntent

On Android the foreground activity can get intents
with onNewIntent. Those intents can not be received
in any other way. This is especially true in Android nfc.

This patch adds a way to receive those intents in Qt.
This patch heavily leans on the implementation of onActivityResult.

Change-Id: Ic4dca301f34afe9a528149c3653e545ed3265a3c
Reviewed-by: BogDan Vatra <bogdan@kde.org>
Reviewed-by: Alex Blasche <alexander.blasche@theqtcompany.com>

src/android/jar/src/org/qtproject/qt5/android/QtActivityDelegate.java

@@ -883,6 +883,11 @@ public class QtActivityDelegate
         }
     }
 
+    public void onNewIntent(Intent data)
+    {
+        QtNative.onNewIntent(data);
+    }
+
     public void onActivityResult(int requestCode, int resultCode, Intent data)
     {
         try {

src/android/jar/src/org/qtproject/qt5/android/QtNative.java

@@ -628,6 +628,7 @@ public class QtNative
 
     // activity methods
     public static native void onActivityResult(int requestCode, int resultCode, Intent data);
+    public static native void onNewIntent(Intent data);
 
     public static native void onAndroidUiThread(long id);
 }

src/corelib/kernel/qjnihelpers.cpp

@@ -89,6 +89,39 @@ void QtAndroidPrivate::handleActivityResult(jint requestCode, jint resultCode, j
     }
 }
 
+namespace {
+    class NewIntentListeners
+    {
+    public:
+        QMutex mutex;
+        QList<QtAndroidPrivate::NewIntentListener *> listeners;
+    };
+}
+
+Q_GLOBAL_STATIC(NewIntentListeners, g_newIntentListeners)
+
+void QtAndroidPrivate::registerNewIntentListener(NewIntentListener *listener)
+{
+    QMutexLocker locker(&g_newIntentListeners()->mutex);
+    g_newIntentListeners()->listeners.append(listener);
+}
+
+void QtAndroidPrivate::unregisterNewIntentListener(NewIntentListener *listener)
+{
+    QMutexLocker locker(&g_newIntentListeners()->mutex);
+    g_newIntentListeners()->listeners.removeAll(listener);
+}
+
+void QtAndroidPrivate::handleNewIntent(JNIEnv *env, jobject intent)
+{
+    QMutexLocker locker(&g_newIntentListeners()->mutex);
+    const QList<QtAndroidPrivate::NewIntentListener *> &listeners = g_newIntentListeners()->listeners;
+    for (int i=0; i<listeners.size(); ++i) {
+        if (listeners.at(i)->handleNewIntent(env, intent))
+            break;
+    }
+}
+
 static inline bool exceptionCheck(JNIEnv *env)
 {
     if (env->ExceptionCheck()) {

src/corelib/kernel/qjnihelpers_p.h

@@ -61,6 +61,13 @@ namespace QtAndroidPrivate
         virtual bool handleActivityResult(jint requestCode, jint resultCode, jobject data) = 0;
     };
 
+    class Q_CORE_EXPORT NewIntentListener
+    {
+    public:
+        virtual ~NewIntentListener() {}
+        virtual bool handleNewIntent(JNIEnv *env, jobject intent) = 0;
+    };
+
     Q_CORE_EXPORT jobject activity();
     Q_CORE_EXPORT JavaVM *javaVM();
     Q_CORE_EXPORT jint initJNI(JavaVM *vm, JNIEnv *env);
@@ -71,6 +78,10 @@ namespace QtAndroidPrivate
     Q_CORE_EXPORT void handleActivityResult(jint requestCode, jint resultCode, jobject data);
     Q_CORE_EXPORT void registerActivityResultListener(ActivityResultListener *listener);
     Q_CORE_EXPORT void unregisterActivityResultListener(ActivityResultListener *listener);
+
+    Q_CORE_EXPORT void handleNewIntent(JNIEnv *env, jobject intent);
+    Q_CORE_EXPORT void registerNewIntentListener(NewIntentListener *listener);
+    Q_CORE_EXPORT void unregisterNewIntentListener(NewIntentListener *listener);
 }
 
 QT_END_NAMESPACE

src/plugins/platforms/android/androidjnimain.cpp

@@ -648,6 +648,11 @@ static void onActivityResult(JNIEnv */*env*/, jclass /*cls*/,
     QtAndroidPrivate::handleActivityResult(requestCode, resultCode, data);
 }
 
+static void onNewIntent(JNIEnv *env, jclass /*cls*/, jobject data)
+{
+    QtAndroidPrivate::handleNewIntent(env, data);
+}
+
 static JNINativeMethod methods[] = {
     {"startQtAndroidPlugin", "()Z", (void *)startQtAndroidPlugin},
     {"startQtApplication", "(Ljava/lang/String;Ljava/lang/String;)V", (void *)startQtApplication},
@@ -658,7 +663,8 @@ static JNINativeMethod methods[] = {
     {"updateWindow", "()V", (void *)updateWindow},
     {"updateApplicationState", "(I)V", (void *)updateApplicationState},
     {"handleOrientationChanged", "(II)V", (void *)handleOrientationChanged},
-    {"onActivityResult", "(IILandroid/content/Intent;)V", (void *)onActivityResult}
+    {"onActivityResult", "(IILandroid/content/Intent;)V", (void *)onActivityResult},
+    {"onNewIntent", "(Landroid/content/Intent;)V", (void *)onNewIntent}
 };
 
 #define FIND_AND_CHECK_CLASS(CLASS_NAME) \