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      1 // Copyright 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "chrome/browser/invalidation/invalidation_controller_android.h"
      6 
      7 #include <string>
      8 #include <vector>
      9 
     10 #include "base/android/jni_array.h"
     11 #include "chrome/jni/InvalidationController_jni.h"
     12 #include "google/cacheinvalidation/include/types.h"
     13 
     14 namespace invalidation {
     15 
     16 InvalidationControllerAndroid::InvalidationControllerAndroid() {}
     17 
     18 InvalidationControllerAndroid::~InvalidationControllerAndroid() {}
     19 
     20 void InvalidationControllerAndroid::SetRegisteredObjectIds(
     21     const syncer::ObjectIdSet& ids) {
     22   // Get a reference to the Java invalidation controller.
     23   JNIEnv* env = base::android::AttachCurrentThread();
     24   DCHECK(env);
     25   if (invalidation_controller_.is_null()) {
     26     invalidation_controller_.Reset(Java_InvalidationController_get(
     27         env,
     28         base::android::GetApplicationContext()));
     29   }
     30 
     31   // To call the corresponding method on the Java invalidation controller, split
     32   // the object ids into object source and object name arrays.
     33   std::vector<int> sources;
     34   std::vector<std::string> names;
     35   syncer::ObjectIdSet::const_iterator id;
     36   for (id = ids.begin(); id != ids.end(); ++id) {
     37     sources.push_back(id->source());
     38     names.push_back(id->name());
     39   }
     40 
     41   Java_InvalidationController_setRegisteredObjectIds(
     42       env,
     43       invalidation_controller_.obj(),
     44       base::android::ToJavaIntArray(env, sources).obj(),
     45       base::android::ToJavaArrayOfStrings(env, names).obj());
     46 }
     47 
     48 std::string InvalidationControllerAndroid::GetInvalidatorClientId() {
     49   JNIEnv* env = base::android::AttachCurrentThread();
     50   DCHECK(env);
     51   if (invalidation_controller_.is_null()) {
     52     invalidation_controller_.Reset(Java_InvalidationController_get(
     53         env,
     54         base::android::GetApplicationContext()));
     55   }
     56 
     57   // Ask the Java code to for the invalidator ID it's currently using.
     58   base::android::ScopedJavaLocalRef<_jbyteArray*> id_bytes_java =
     59       Java_InvalidationController_getInvalidatorClientId(
     60           env,
     61           invalidation_controller_.obj());
     62 
     63   // Convert it into a more convenient format for C++.
     64   std::vector<uint8_t> id_bytes;
     65   base::android::JavaByteArrayToByteVector(env, id_bytes_java.obj(), &id_bytes);
     66   std::string id(id_bytes.begin(), id_bytes.end());
     67 
     68   return id;
     69 }
     70 
     71 bool RegisterInvalidationController(JNIEnv* env) {
     72   return RegisterNativesImpl(env);
     73 }
     74 
     75 } //  namespace invalidation
     76