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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/ibus/ibus_client.h"
#include "base/bind.h"
#include "base/callback.h"
#include "chromeos/dbus/ibus/ibus_constants.h"
#include "chromeos/dbus/ibus/ibus_component.h"
#include "chromeos/dbus/ibus/ibus_engine_service.h"
#include "chromeos/ime/ibus_bridge.h"
#include "dbus/bus.h"
#include "dbus/message.h"
#include "dbus/object_path.h"
#include "dbus/object_proxy.h"
namespace chromeos {
namespace {
// The IBusClient implementation.
class IBusClientImpl : public IBusClient {
public:
explicit IBusClientImpl(dbus::Bus* bus)
: proxy_(bus->GetObjectProxy(ibus::kServiceName,
dbus::ObjectPath(ibus::bus::kServicePath))),
weak_ptr_factory_(this) {
}
virtual ~IBusClientImpl() {}
// IBusClient override.
virtual void CreateInputContext(
const std::string& client_name,
const CreateInputContextCallback& callback,
const ErrorCallback& error_callback) OVERRIDE {
DCHECK(!callback.is_null());
DCHECK(!error_callback.is_null());
dbus::MethodCall method_call(ibus::bus::kServiceInterface,
ibus::bus::kCreateInputContextMethod);
dbus::MessageWriter writer(&method_call);
writer.AppendString(client_name);
proxy_->CallMethodWithErrorCallback(
&method_call,
dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
base::Bind(&IBusClientImpl::OnCreateInputContext,
weak_ptr_factory_.GetWeakPtr(),
callback,
error_callback),
base::Bind(&IBusClientImpl::OnDBusMethodCallFail,
weak_ptr_factory_.GetWeakPtr(),
error_callback));
}
// IBusClient override.
virtual void RegisterComponent(
const IBusComponent& ibus_component,
const RegisterComponentCallback& callback,
const ErrorCallback& error_callback) OVERRIDE {
DCHECK(!callback.is_null());
DCHECK(!error_callback.is_null());
dbus::MethodCall method_call(ibus::bus::kServiceInterface,
ibus::bus::kRegisterComponentMethod);
dbus::MessageWriter writer(&method_call);
AppendIBusComponent(ibus_component, &writer);
proxy_->CallMethodWithErrorCallback(
&method_call,
dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
base::Bind(&IBusClientImpl::OnRegisterComponent,
weak_ptr_factory_.GetWeakPtr(),
callback,
error_callback),
base::Bind(&IBusClientImpl::OnDBusMethodCallFail,
weak_ptr_factory_.GetWeakPtr(),
error_callback));
}
// IBusClient override.
virtual void SetGlobalEngine(const std::string& engine_name,
const ErrorCallback& error_callback) OVERRIDE {
DCHECK(!error_callback.is_null());
dbus::MethodCall method_call(ibus::bus::kServiceInterface,
ibus::bus::kSetGlobalEngineMethod);
dbus::MessageWriter writer(&method_call);
writer.AppendString(engine_name);
proxy_->CallMethodWithErrorCallback(
&method_call,
dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
base::Bind(&IBusClientImpl::OnSetGlobalEngine,
weak_ptr_factory_.GetWeakPtr(),
error_callback),
base::Bind(&IBusClientImpl::OnDBusMethodCallFail,
weak_ptr_factory_.GetWeakPtr(),
error_callback));
}
// IBusClient override.
virtual void Exit(ExitOption option,
const ErrorCallback& error_callback) OVERRIDE {
DCHECK(!error_callback.is_null());
dbus::MethodCall method_call(ibus::bus::kServiceInterface,
ibus::bus::kExitMethod);
dbus::MessageWriter writer(&method_call);
writer.AppendBool(option == RESTART_IBUS_DAEMON);
proxy_->CallMethodWithErrorCallback(
&method_call,
dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
base::Bind(&IBusClientImpl::OnExit,
weak_ptr_factory_.GetWeakPtr(),
error_callback),
base::Bind(&IBusClientImpl::OnDBusMethodCallFail,
weak_ptr_factory_.GetWeakPtr(),
error_callback));
}
private:
// Handles responses of CreateInputContext method calls.
void OnCreateInputContext(const CreateInputContextCallback& callback,
const ErrorCallback& error_callback,
dbus::Response* response) {
if (!response) {
LOG(ERROR) << "Cannot get input context: response is NULL.";
error_callback.Run();
return;
}
dbus::MessageReader reader(response);
dbus::ObjectPath object_path;
if (!reader.PopObjectPath(&object_path)) {
// The IBus message structure may be changed.
LOG(ERROR) << "Invalid response: " << response->ToString();
error_callback.Run();
return;
}
callback.Run(object_path);
}
// Handles responses of RegisterComponent method calls.
void OnRegisterComponent(const RegisterComponentCallback& callback,
const ErrorCallback& error_callback,
dbus::Response* response) {
if (!response) {
LOG(ERROR) << "Response is NULL.";
error_callback.Run();
return;
}
callback.Run();
}
// Handles responses of RegisterComponent method calls.
void OnSetGlobalEngine(const ErrorCallback& error_callback,
dbus::Response* response) {
if (!response) {
LOG(ERROR) << "Response is NULL.";
error_callback.Run();
return;
}
}
// Handles responses of RegisterComponent method calls.
void OnExit(const ErrorCallback& error_callback,
dbus::Response* response) {
if (!response) {
LOG(ERROR) << "Response is NULL.";
error_callback.Run();
return;
}
}
// Handles error response of RegisterComponent method call.
void OnDBusMethodCallFail(const ErrorCallback& error_callback,
dbus::ErrorResponse* response) {
error_callback.Run();
}
dbus::ObjectProxy* proxy_;
base::WeakPtrFactory<IBusClientImpl> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(IBusClientImpl);
};
// An implementation of IBusClient without ibus-daemon interaction.
// Currently this class is used only on linux desktop.
// TODO(nona): Use this on ChromeOS device once crbug.com/171351 is fixed.
class IBusClientDaemonlessImpl : public IBusClient {
public:
IBusClientDaemonlessImpl() {}
virtual ~IBusClientDaemonlessImpl() {}
virtual void CreateInputContext(
const std::string& client_name,
const CreateInputContextCallback & callback,
const ErrorCallback& error_callback) OVERRIDE {
// TODO(nona): Remove this function once ibus-daemon is gone.
// We don't have to do anything for this function except for calling
// |callback| as the success of this function. The original spec of ibus
// supports multiple input contexts, but there is only one input context in
// Chrome OS. That is all IME events will be came from same input context
// and all engine action shuold be forwarded to same input context.
dbus::ObjectPath path("dummpy path");
callback.Run(path);
}
virtual void RegisterComponent(
const IBusComponent& ibus_component,
const RegisterComponentCallback& callback,
const ErrorCallback& error_callback) OVERRIDE {
// TODO(nona): Remove this function once ibus-daemon is gone.
// The information about engine is stored in chromeos::InputMethodManager so
// IBusBridge doesn't do anything except for calling |callback| as success
// of this function.
callback.Run();
}
virtual void SetGlobalEngine(const std::string& engine_name,
const ErrorCallback& error_callback) OVERRIDE {
IBusEngineHandlerInterface* previous_engine =
IBusBridge::Get()->GetEngineHandler();
if (previous_engine)
previous_engine->Disable();
IBusBridge::Get()->CreateEngine(engine_name);
IBusEngineHandlerInterface* next_engine =
IBusBridge::Get()->GetEngineHandler();
IBusBridge::Get()->SetEngineHandler(next_engine);
if (next_engine)
next_engine->Enable();
}
virtual void Exit(ExitOption option,
const ErrorCallback& error_callback) OVERRIDE {
// Exit is not supported on daemon-less implementation.
}
private:
DISALLOW_COPY_AND_ASSIGN(IBusClientDaemonlessImpl);
};
} // namespace
///////////////////////////////////////////////////////////////////////////////
// IBusClient
IBusClient::IBusClient() {}
IBusClient::~IBusClient() {}
// static
IBusClient* IBusClient::Create(DBusClientImplementationType type,
dbus::Bus* bus) {
if (type == REAL_DBUS_CLIENT_IMPLEMENTATION) {
return new IBusClientImpl(bus);
}
DCHECK_EQ(STUB_DBUS_CLIENT_IMPLEMENTATION, type);
return new IBusClientDaemonlessImpl();
}
} // namespace chromeos
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