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// Copyright (c) 2012 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 "chromeos/dbus/bluetooth_node_client.h"
#include <map>
#include <utility>
#include "base/bind.h"
#include "base/logging.h"
#include "base/stl_util.h"
#include "chromeos/dbus/bluetooth_device_client.h"
#include "chromeos/dbus/bluetooth_property.h"
#include "dbus/bus.h"
#include "dbus/message.h"
#include "dbus/object_path.h"
#include "dbus/object_proxy.h"
#include "third_party/cros_system_api/dbus/service_constants.h"
namespace chromeos {
BluetoothNodeClient::Properties::Properties(dbus::ObjectProxy* object_proxy,
PropertyChangedCallback callback)
: BluetoothPropertySet(object_proxy,
bluetooth_node::kBluetoothNodeInterface,
callback) {
RegisterProperty(bluetooth_node::kNameProperty, &name);
RegisterProperty(bluetooth_node::kDeviceProperty, &device);
}
BluetoothNodeClient::Properties::~Properties() {
}
// The BluetoothNodeClient implementation used in production.
class BluetoothNodeClientImpl: public BluetoothNodeClient,
private BluetoothDeviceClient::Observer {
public:
BluetoothNodeClientImpl(dbus::Bus* bus,
BluetoothDeviceClient* device_client)
: weak_ptr_factory_(this),
bus_(bus) {
DVLOG(1) << "Creating BluetoothNodeClientImpl";
DCHECK(device_client);
device_client->AddObserver(this);
}
virtual ~BluetoothNodeClientImpl() {
// Clean up Properties structures
for (ObjectMap::iterator iter = object_map_.begin();
iter != object_map_.end(); ++iter) {
Object object = iter->second;
Properties* properties = object.second;
delete properties;
}
}
// BluetoothNodeClient override.
virtual void AddObserver(BluetoothNodeClient::Observer* observer)
OVERRIDE {
DCHECK(observer);
observers_.AddObserver(observer);
}
// BluetoothNodeClient override.
virtual void RemoveObserver(BluetoothNodeClient::Observer* observer)
OVERRIDE {
DCHECK(observer);
observers_.RemoveObserver(observer);
}
// BluetoothNodeClient override.
virtual Properties* GetProperties(const dbus::ObjectPath& object_path)
OVERRIDE {
return GetObject(object_path).second;
}
private:
// We maintain a collection of dbus object proxies and properties structures
// for each node binding.
typedef std::pair<dbus::ObjectProxy*, Properties*> Object;
typedef std::map<const dbus::ObjectPath, Object> ObjectMap;
ObjectMap object_map_;
// BluetoothDeviceClient::Observer override.
virtual void NodeCreated(const dbus::ObjectPath& device_path,
const dbus::ObjectPath& object_path) OVERRIDE {
}
// BluetoothDeviceClient::Observer override.
virtual void NodeRemoved(const dbus::ObjectPath& device_path,
const dbus::ObjectPath& object_path) OVERRIDE {
RemoveObject(object_path);
}
// Ensures that we have an object proxy and properties structure for
// a node binding with object path |object_path|, creating it if not and
// storing it in our |object_map_| map.
Object GetObject(const dbus::ObjectPath& object_path) {
ObjectMap::iterator iter = object_map_.find(object_path);
if (iter != object_map_.end())
return iter->second;
// Create the object proxy.
DCHECK(bus_);
dbus::ObjectProxy* object_proxy = bus_->GetObjectProxy(
bluetooth_node::kBluetoothNodeServiceName, object_path);
// Create the properties structure.
Properties* properties = new Properties(
object_proxy,
base::Bind(&BluetoothNodeClientImpl::OnPropertyChanged,
weak_ptr_factory_.GetWeakPtr(), object_path));
properties->ConnectSignals();
properties->GetAll();
Object object = std::make_pair(object_proxy, properties);
object_map_[object_path] = object;
return object;
}
// Removes the dbus object proxy and properties for the node binding with
// dbus object path |object_path| from our |object_map_| map.
void RemoveObject(const dbus::ObjectPath& object_path) {
ObjectMap::iterator iter = object_map_.find(object_path);
if (iter != object_map_.end()) {
// Clean up the Properties structure.
Object object = iter->second;
Properties* properties = object.second;
delete properties;
object_map_.erase(iter);
}
}
// Returns a pointer to the object proxy for |object_path|, creating
// it if necessary.
dbus::ObjectProxy* GetObjectProxy(const dbus::ObjectPath& object_path) {
return GetObject(object_path).first;
}
// Called by BluetoothPropertySet when a property value is changed,
// either by result of a signal or response to a GetAll() or Get()
// call. Informs observers.
void OnPropertyChanged(const dbus::ObjectPath& object_path,
const std::string& property_name) {
FOR_EACH_OBSERVER(BluetoothNodeClient::Observer, observers_,
NodePropertyChanged(object_path, property_name));
}
// Weak pointer factory for generating 'this' pointers that might live longer
// than we do.
base::WeakPtrFactory<BluetoothNodeClientImpl> weak_ptr_factory_;
dbus::Bus* bus_;
// List of observers interested in event notifications from us.
ObserverList<BluetoothNodeClient::Observer> observers_;
DISALLOW_COPY_AND_ASSIGN(BluetoothNodeClientImpl);
};
// The BluetoothNodeClient implementation used on Linux desktop, which does
// nothing.
class BluetoothNodeClientStubImpl : public BluetoothNodeClient {
public:
// BluetoothNodeClient override.
virtual void AddObserver(Observer* observer) OVERRIDE {
}
// BluetoothNodeClient override.
virtual void RemoveObserver(Observer* observer) OVERRIDE {
}
// BluetoothNodeClient override.
virtual Properties* GetProperties(const dbus::ObjectPath& object_path)
OVERRIDE {
VLOG(1) << "GetProperties: " << object_path.value();
return NULL;
}
};
BluetoothNodeClient::BluetoothNodeClient() {
}
BluetoothNodeClient::~BluetoothNodeClient() {
}
BluetoothNodeClient* BluetoothNodeClient::Create(
DBusClientImplementationType type,
dbus::Bus* bus,
BluetoothDeviceClient* adapter_client) {
if (type == REAL_DBUS_CLIENT_IMPLEMENTATION)
return new BluetoothNodeClientImpl(bus, adapter_client);
DCHECK_EQ(STUB_DBUS_CLIENT_IMPLEMENTATION, type);
return new BluetoothNodeClientStubImpl();
}
} // namespace chromeos
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