More native work.

Implement save/restore of state, and add native APIs for
configuration information.

Change-Id: I2a3ddc2ba605db58d7c8b2b31b9215fb323f90b5

4 files changed, 166 insertions, 7 deletions

diff --git a/core/jni/Android.mk b/core/jni/Android.mk
index 5c37c7c..efdc399 100644
--- a/core/jni/Android.mk
+++ b/core/jni/Android.mk
@@ -135,7 +135,8 @@ LOCAL_SRC_FILES:= \
 	android_backup_BackupDataOutput.cpp \
 	android_backup_FileBackupHelperBase.cpp \
 	android_backup_BackupHelperDispatcher.cpp \
-	android_content_res_ObbScanner.cpp
+	android_content_res_ObbScanner.cpp \
+    android_content_res_Configuration.cpp
 
 LOCAL_C_INCLUDES += \
 	$(JNI_H_INCLUDE) \
diff --git a/core/jni/AndroidRuntime.cpp b/core/jni/AndroidRuntime.cpp
index 7fe56a7..62ca2ef 100644
--- a/core/jni/AndroidRuntime.cpp
+++ b/core/jni/AndroidRuntime.cpp
@@ -167,6 +167,7 @@ extern int register_android_view_InputQueue(JNIEnv* env);
 extern int register_android_view_KeyEvent(JNIEnv* env);
 extern int register_android_view_MotionEvent(JNIEnv* env);
 extern int register_android_content_res_ObbScanner(JNIEnv* env);
+extern int register_android_content_res_Configuration(JNIEnv* env);
 
 static AndroidRuntime* gCurRuntime = NULL;
 
@@ -1340,6 +1341,7 @@ static const RegJNIRec gRegJNI[] = {
     REG_JNI(register_android_view_MotionEvent),
 
     REG_JNI(register_android_content_res_ObbScanner),
+    REG_JNI(register_android_content_res_Configuration),
 };
 
 /*
diff --git a/core/jni/android_app_NativeActivity.cpp b/core/jni/android_app_NativeActivity.cpp
index 1feb3b3..0932473 100644
--- a/core/jni/android_app_NativeActivity.cpp
+++ b/core/jni/android_app_NativeActivity.cpp
@@ -600,7 +600,7 @@ static bool mainWorkCallback(int fd, int events, void* data) {
 static jint
 loadNativeCode_native(JNIEnv* env, jobject clazz, jstring path, jobject messageQueue,
         jstring internalDataDir, jstring externalDataDir, int sdkVersion,
-        jobject jAssetMgr)
+        jobject jAssetMgr, jbyteArray savedState)
 {
     LOG_TRACE("loadNativeCode_native");
 
@@ -666,7 +666,18 @@ loadNativeCode_native(JNIEnv* env, jobject clazz, jstring path, jobject messageQ
         
         code->assetManager = assetManagerForJavaObject(env, jAssetMgr);
 
-        code->createActivityFunc(code, NULL, 0);
+        jbyte* rawSavedState = NULL;
+        jsize rawSavedSize = 0;
+        if (savedState != NULL) {
+            rawSavedState = env->GetByteArrayElements(savedState, NULL);
+            rawSavedSize = env->GetArrayLength(savedState);
+        }
+
+        code->createActivityFunc(code, rawSavedState, rawSavedSize);
+
+        if (rawSavedState != NULL) {
+            env->ReleaseByteArrayElements(savedState, rawSavedState, 0);
+        }
     }
     
     return (jint)code;
@@ -706,17 +717,31 @@ onResume_native(JNIEnv* env, jobject clazz, jint handle)
     }
 }
 
-static void
+static jbyteArray
 onSaveInstanceState_native(JNIEnv* env, jobject clazz, jint handle)
 {
     LOG_TRACE("onSaveInstanceState_native");
+
+    jbyteArray array = NULL;
+
     if (handle != 0) {
         NativeCode* code = (NativeCode*)handle;
         if (code->callbacks.onSaveInstanceState != NULL) {
             size_t len = 0;
-            code->callbacks.onSaveInstanceState(code, &len);
+            jbyte* state = (jbyte*)code->callbacks.onSaveInstanceState(code, &len);
+            if (len > 0) {
+                array = env->NewByteArray(len);
+                if (array != NULL) {
+                    env->SetByteArrayRegion(array, 0, len, state);
+                }
+            }
+            if (state != NULL) {
+                free(state);
+            }
         }
     }
+
+    return array;
 }
 
 static void
@@ -744,6 +769,18 @@ onStop_native(JNIEnv* env, jobject clazz, jint handle)
 }
 
 static void
+onConfigurationChanged_native(JNIEnv* env, jobject clazz, jint handle)
+{
+    LOG_TRACE("onConfigurationChanged_native");
+    if (handle != 0) {
+        NativeCode* code = (NativeCode*)handle;
+        if (code->callbacks.onConfigurationChanged != NULL) {
+            code->callbacks.onConfigurationChanged(code);
+        }
+    }
+}
+
+static void
 onLowMemory_native(JNIEnv* env, jobject clazz, jint handle)
 {
     LOG_TRACE("onLowMemory_native");
@@ -934,14 +971,15 @@ finishPreDispatchKeyEvent_native(JNIEnv* env, jobject clazz, jint handle,
 }
 
 static const JNINativeMethod g_methods[] = {
-    { "loadNativeCode", "(Ljava/lang/String;Landroid/os/MessageQueue;Ljava/lang/String;Ljava/lang/String;ILandroid/content/res/AssetManager;)I",
+    { "loadNativeCode", "(Ljava/lang/String;Landroid/os/MessageQueue;Ljava/lang/String;Ljava/lang/String;ILandroid/content/res/AssetManager;[B)I",
             (void*)loadNativeCode_native },
     { "unloadNativeCode", "(I)V", (void*)unloadNativeCode_native },
     { "onStartNative", "(I)V", (void*)onStart_native },
     { "onResumeNative", "(I)V", (void*)onResume_native },
-    { "onSaveInstanceStateNative", "(I)V", (void*)onSaveInstanceState_native },
+    { "onSaveInstanceStateNative", "(I)[B", (void*)onSaveInstanceState_native },
     { "onPauseNative", "(I)V", (void*)onPause_native },
     { "onStopNative", "(I)V", (void*)onStop_native },
+    { "onConfigurationChangedNative", "(I)V", (void*)onConfigurationChanged_native },
     { "onLowMemoryNative", "(I)V", (void*)onLowMemory_native },
     { "onWindowFocusChangedNative", "(IZ)V", (void*)onWindowFocusChanged_native },
     { "onSurfaceCreatedNative", "(ILandroid/view/Surface;)V", (void*)onSurfaceCreated_native },
diff --git a/core/jni/android_content_res_Configuration.cpp b/core/jni/android_content_res_Configuration.cpp
new file mode 100644
index 0000000..28a43ab
--- /dev/null
+++ b/core/jni/android_content_res_Configuration.cpp
@@ -0,0 +1,118 @@
+/*
+ * Copyright 2010, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "Configuration"
+
+#include <utils/Log.h>
+#include "utils/misc.h"
+
+#include "jni.h"
+#include <android_runtime/android_content_res_Configuration.h>
+#include "android_runtime/AndroidRuntime.h"
+
+namespace android {
+
+static struct {
+    jclass clazz;
+
+    jfieldID mcc;
+    jfieldID mnc;
+    jfieldID locale;
+    jfieldID screenLayout;
+    jfieldID touchscreen;
+    jfieldID keyboard;
+    jfieldID keyboardHidden;
+    jfieldID hardKeyboardHidden;
+    jfieldID navigation;
+    jfieldID navigationHidden;
+    jfieldID orientation;
+    jfieldID uiMode;
+} gConfigurationClassInfo;
+
+void android_Configuration_getFromJava(
+        JNIEnv* env, jobject clazz, struct AConfiguration* out) {
+    out->mcc = env->GetIntField(clazz, gConfigurationClassInfo.mcc);
+    out->mnc = env->GetIntField(clazz, gConfigurationClassInfo.mnc);
+    out->screenLayout = env->GetIntField(clazz, gConfigurationClassInfo.screenLayout);
+    out->touchscreen = env->GetIntField(clazz, gConfigurationClassInfo.touchscreen);
+    out->keyboard = env->GetIntField(clazz, gConfigurationClassInfo.keyboard);
+    out->navigation = env->GetIntField(clazz, gConfigurationClassInfo.navigation);
+
+    out->inputFlags = env->GetIntField(clazz, gConfigurationClassInfo.keyboardHidden);
+    int hardKeyboardHidden = env->GetIntField(clazz, gConfigurationClassInfo.hardKeyboardHidden);
+    if (out->inputFlags == ACONFIGURATION_KEYSHIDDEN_NO
+            && hardKeyboardHidden == 2) {
+        out->inputFlags = ACONFIGURATION_KEYSHIDDEN_SOFT;
+    }
+    out->inputFlags |= env->GetIntField(clazz, gConfigurationClassInfo.navigationHidden)
+            << ResTable_config::SHIFT_NAVHIDDEN;
+
+    out->orientation = env->GetIntField(clazz, gConfigurationClassInfo.orientation);
+    out->uiMode = env->GetIntField(clazz, gConfigurationClassInfo.uiMode);
+}
+
+/*
+ * JNI registration.
+ */
+static JNINativeMethod gMethods[] = {
+    /* name, signature, funcPtr */
+    //{ "getObbInfo_native", "(Ljava/lang/String;Landroid/content/res/ObbInfo;)Z",
+    //        (void*) android_content_res_ObbScanner_getObbInfo },
+};
+
+#define FIND_CLASS(var, className) \
+        var = env->FindClass(className); \
+        LOG_FATAL_IF(! var, "Unable to find class " className); \
+        var = jclass(env->NewGlobalRef(var));
+
+#define GET_FIELD_ID(var, clazz, fieldName, fieldDescriptor) \
+        var = env->GetFieldID(clazz, fieldName, fieldDescriptor); \
+        LOG_FATAL_IF(! var, "Unable to find field " fieldName);
+
+int register_android_content_res_Configuration(JNIEnv* env)
+{
+    FIND_CLASS(gConfigurationClassInfo.clazz, "android/content/res/Configuration");
+
+    GET_FIELD_ID(gConfigurationClassInfo.mcc, gConfigurationClassInfo.clazz,
+            "mcc", "I");
+    GET_FIELD_ID(gConfigurationClassInfo.mnc, gConfigurationClassInfo.clazz,
+            "mnc", "I");
+    GET_FIELD_ID(gConfigurationClassInfo.locale, gConfigurationClassInfo.clazz,
+            "locale", "Ljava/util/Locale;");
+    GET_FIELD_ID(gConfigurationClassInfo.screenLayout, gConfigurationClassInfo.clazz,
+            "screenLayout", "I");
+    GET_FIELD_ID(gConfigurationClassInfo.touchscreen, gConfigurationClassInfo.clazz,
+            "touchscreen", "I");
+    GET_FIELD_ID(gConfigurationClassInfo.keyboard, gConfigurationClassInfo.clazz,
+            "keyboard", "I");
+    GET_FIELD_ID(gConfigurationClassInfo.keyboardHidden, gConfigurationClassInfo.clazz,
+            "keyboardHidden", "I");
+    GET_FIELD_ID(gConfigurationClassInfo.hardKeyboardHidden, gConfigurationClassInfo.clazz,
+            "hardKeyboardHidden", "I");
+    GET_FIELD_ID(gConfigurationClassInfo.navigation, gConfigurationClassInfo.clazz,
+            "navigation", "I");
+    GET_FIELD_ID(gConfigurationClassInfo.navigationHidden, gConfigurationClassInfo.clazz,
+            "navigationHidden", "I");
+    GET_FIELD_ID(gConfigurationClassInfo.orientation, gConfigurationClassInfo.clazz,
+            "orientation", "I");
+    GET_FIELD_ID(gConfigurationClassInfo.uiMode, gConfigurationClassInfo.clazz,
+            "uiMode", "I");
+
+    return AndroidRuntime::registerNativeMethods(env, "android/content/res/Configuration", gMethods,
+            NELEM(gMethods));
+}
+
+}; // namespace android