bluetooth: android: Initial basic Descriptors implementation.

device/bluetooth/bluetooth_remote_gatt_descriptor_android.h

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef DEVICE_BLUETOOTH_BLUETOOTH_REMOTE_GATT_DESCRIPTOR_ANDROID_H_
+#define DEVICE_BLUETOOTH_BLUETOOTH_REMOTE_GATT_DESCRIPTOR_ANDROID_H_
+
+#include "base/android/jni_android.h"
+#include "base/macros.h"
+#include "device/bluetooth/bluetooth_gatt_descriptor.h"
+
+namespace device {
+
+class BluetoothAdapterAndroid;
+
+// BluetoothRemoteGattDescriptorAndroid along with its owned Java class
+// org.chromium.device.bluetooth.ChromeBluetoothRemoteGattDescriptor
+// implement BluetootGattDescriptor.
+class DEVICE_BLUETOOTH_EXPORT BluetoothRemoteGattDescriptorAndroid
+    : public BluetoothGattDescriptor {
+ public:
+  // Create a BluetoothRemoteGattDescriptorAndroid instance and associated
+  // Java ChromeBluetoothRemoteGattDescriptor using the provided
+  // |bluetooth_gatt_descriptor_wrapper|.
+  //
+  // The ChromeBluetoothRemoteGattDescriptor instance will hold a Java
+  // reference to |bluetooth_gatt_descriptor_wrapper|.
+  static scoped_ptr<BluetoothRemoteGattDescriptorAndroid> Create(
+      BluetoothAdapterAndroid* adapter,
+      const std::string& instanceId,
+      jobject /* BluetoothGattDescriptorWrapper */
+      bluetooth_gatt_descriptor_wrapper,
+      jobject /* chromeBluetoothDevice */ chrome_bluetooth_device);
+
+  ~BluetoothRemoteGattDescriptorAndroid() override;
+
+  // Register C++ methods exposed to Java using JNI.
+  static bool RegisterJNI(JNIEnv* env);
+
+  // Returns the associated ChromeBluetoothRemoteGattDescriptor Java object.
+  base::android::ScopedJavaLocalRef<jobject> GetJavaObject();
+
+  // BluetoothGattDescriptor interface:
+  std::string GetIdentifier() const override;
+  BluetoothUUID GetUUID() const override;
+  bool IsLocal() const override;
+  const std::vector<uint8_t>& GetValue() const override;
+  BluetoothGattCharacteristic* GetCharacteristic() const override;
+  BluetoothGattCharacteristic::Permissions GetPermissions() const override;
+  void ReadRemoteDescriptor(const ValueCallback& callback,
+                            const ErrorCallback& error_callback) override;
+  void WriteRemoteDescriptor(const std::vector<uint8_t>& new_value,
+                             const base::Closure& callback,
+                             const ErrorCallback& error_callback) override;
+
+ private:
+  BluetoothRemoteGattDescriptorAndroid(BluetoothAdapterAndroid* adapter,
+                                       const std::string& instanceId);
+
+  // The adapter associated with this service. It's ok to store a raw pointer
+  // here since |adapter_| indirectly owns this instance.
+  BluetoothAdapterAndroid* adapter_;
+
+  // Java object
+  // org.chromium.device.bluetooth.ChromeBluetoothRemoteGattDescriptor.
+  base::android::ScopedJavaGlobalRef<jobject> j_descriptor_;
+
+  // Adapter unique instance ID.
+  std::string instance_id_;
+
+  DISALLOW_COPY_AND_ASSIGN(BluetoothRemoteGattDescriptorAndroid);
+};
+
+}  // namespace device
+
+#endif  // DEVICE_BLUETOOTH_BLUETOOTH_REMOTE_GATT_DESCRIPTOR_ANDROID_H_