Move CBCentralManager from the Discovery Manager to Adapter

device/bluetooth/bluetooth_low_energy_central_manager_delegate.mm

+// Copyright 2015 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.
+
+#include "device/bluetooth/bluetooth_low_energy_central_manager_delegate.h"
+
+#include "device/bluetooth/bluetooth_adapter_mac.h"
+#include "device/bluetooth/bluetooth_low_energy_discovery_manager_mac.h"
+
+namespace device {
+
+// This class exists to bridge between the Objective-C CBCentralManagerDelegate
+// class and our BluetoothLowEnergyDiscoveryManagerMac and BluetoothAdapterMac
+// classes.
+class BluetoothLowEnergyCentralManagerBridge {
+ public:
+  BluetoothLowEnergyCentralManagerBridge(
+      BluetoothLowEnergyDiscoveryManagerMac* discovery_manager,
+      BluetoothAdapterMac* adapter)
+      : discovery_manager_(discovery_manager), adapter_(adapter) {}
+
+  virtual ~BluetoothLowEnergyCentralManagerBridge() {}
+
+  virtual void DiscoveredPeripheral(CBPeripheral* peripheral,
+                                    NSDictionary* advertisementData,
+                                    int rssi) {
+    discovery_manager_->DiscoveredPeripheral(peripheral, advertisementData,
+                                             rssi);
+  }
+
+  virtual void UpdatedState() {
+    discovery_manager_->TryStartDiscovery();
+    adapter_->LowEnergyCentralManagerUpdatedState();
+  }
+
+ private:
+  BluetoothLowEnergyDiscoveryManagerMac* discovery_manager_;
+  BluetoothAdapterMac* adapter_;
+};
+
+}  // namespace device
+
+@implementation BluetoothLowEnergyCentralManagerDelegate
+
+- (id)initWithDiscoveryManager:
+          (device::BluetoothLowEnergyDiscoveryManagerMac*)discovery_manager
+                    andAdapter:(device::BluetoothAdapterMac*)adapter {
+  if ((self = [super init])) {
+    bridge_.reset(new device::BluetoothLowEnergyCentralManagerBridge(
+        discovery_manager, adapter));
+  }
+  return self;
+}
+
+- (void)centralManager:(CBCentralManager*)central
+ didDiscoverPeripheral:(CBPeripheral*)peripheral
+     advertisementData:(NSDictionary*)advertisementData
+                  RSSI:(NSNumber*)RSSI {
+  // Notifies the discovery of a device.
+  bridge_->DiscoveredPeripheral(peripheral, advertisementData, [RSSI intValue]);
+}
+
+- (void)centralManagerDidUpdateState:(CBCentralManager*)central {
+  // Notifies when the powered state of the central manager changed.
+  bridge_->UpdatedState();
+}
+
+@end