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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.
#ifndef CHROME_BROWSER_CHROMEOS_INPUT_METHOD_IBUS_CONTROLLER_IMPL_H_
#define CHROME_BROWSER_CHROMEOS_INPUT_METHOD_IBUS_CONTROLLER_IMPL_H_
#pragma once
#include <gio/gio.h> // GAsyncResult and related types.
#include <glib-object.h>
#include <string>
#include <vector>
#include "base/process_util.h"
#include "chrome/browser/chromeos/input_method/ibus_controller_base.h"
#include "chrome/browser/chromeos/input_method/input_method_whitelist.h"
#include "ui/base/glib/glib_signal.h"
// Do not #include ibus.h here. That makes it impossible to compile unit tests
// for the class.
struct _IBusBus;
struct _IBusConfig;
struct _IBusPanelService;
struct _IBusPropList;
struct _IBusProperty;
typedef struct _IBusBus IBusBus;
typedef struct _IBusConfig IBusConfig;
typedef struct _IBusPanelService IBusPanelService;
typedef struct _IBusPropList IBusPropList;
typedef struct _IBusProperty IBusProperty;
namespace chromeos {
namespace input_method {
struct InputMethodConfigValue;
struct InputMethodProperty;
typedef std::vector<InputMethodProperty> InputMethodPropertyList;
// The IBusController implementation.
class IBusControllerImpl : public IBusControllerBase {
public:
IBusControllerImpl();
virtual ~IBusControllerImpl();
// IBusController overrides:
virtual bool Start() OVERRIDE;
virtual void Reset() OVERRIDE;
virtual bool Stop() OVERRIDE;
virtual bool ChangeInputMethod(const std::string& id) OVERRIDE;
virtual bool ActivateInputMethodProperty(const std::string& key) OVERRIDE;
// Calls <anonymous_namespace>::FindAndUpdateProperty. This method is just for
// unit testing.
static bool FindAndUpdatePropertyForTesting(
const InputMethodProperty& new_prop,
InputMethodPropertyList* prop_list);
static void IBusDaemonInitializationDone(IBusControllerImpl* controller,
const std::string& ibus_address);
private:
enum IBusDaemonStatus{
IBUS_DAEMON_INITIALIZING,
IBUS_DAEMON_RUNNING,
IBUS_DAEMON_SHUTTING_DOWN,
IBUS_DAEMON_STOP,
};
// Functions that end with Thunk are used to deal with glib callbacks.
CHROMEG_CALLBACK_0(IBusControllerImpl, void, BusConnected, IBusBus*);
CHROMEG_CALLBACK_0(IBusControllerImpl, void, BusDisconnected, IBusBus*);
CHROMEG_CALLBACK_3(IBusControllerImpl, void, BusNameOwnerChanged,
IBusBus*, const gchar*, const gchar*, const gchar*);
CHROMEG_CALLBACK_1(IBusControllerImpl, void, FocusIn,
IBusPanelService*, const gchar*);
CHROMEG_CALLBACK_1(IBusControllerImpl, void, RegisterProperties,
IBusPanelService*, IBusPropList*);
CHROMEG_CALLBACK_1(IBusControllerImpl, void, UpdateProperty,
IBusPanelService*, IBusProperty*);
// IBusControllerBase overrides:
virtual bool SetInputMethodConfigInternal(
const ConfigKeyType& key,
const InputMethodConfigValue& value) OVERRIDE;
// Checks if |ibus_| and |ibus_config_| connections are alive.
bool IBusConnectionsAreAlive();
// Restores connections to ibus-daemon and ibus-memconf if they are not ready.
void MaybeRestoreConnections();
// Initializes IBusBus object if it's not yet done.
void MaybeInitializeIBusBus();
// Creates IBusConfig object if it's not created yet AND |ibus_| connection
// is ready.
void MaybeRestoreIBusConfig();
// Destroys IBusConfig object if |ibus_| connection is not ready. This
// function does nothing if |ibus_config_| is NULL or |ibus_| connection is
// still alive. Note that the IBusConfig object can't be used when |ibus_|
// connection is not ready.
void MaybeDestroyIBusConfig();
// Just calls ibus_bus_set_global_engine_async() with the |id|.
void SendChangeInputMethodRequest(const std::string& id);
// Calls SetInputMethodConfigInternal() for each |current_config_values_|.
void SendAllInputMethodConfigs();
// Starts listening to the "connected", "disconnected", and
// "name-owner-changed" D-Bus signals from ibus-daemon.
void ConnectBusSignals();
// Starts listening to the "focus-in", "register-properties", and
// "update-property" D-Bus signals from ibus-daemon.
void ConnectPanelServiceSignals();
// Adds address file watcher in FILE thread and then calls LaunchIBusDaemon.
bool StartIBusDaemon();
// Starts ibus-daemon.
void LaunchIBusDaemon(const std::string& ibus_address);
// Launches an input method procsess specified by the given command
// line. On success, returns true and stores the process handle in
// |process_handle|. Otherwise, returns false, and the contents of
// |process_handle| is untouched. |watch_func| will be called when the
// process terminates.
bool LaunchProcess(const std::string& command_line,
base::ProcessHandle* process_handle,
GChildWatchFunc watch_func);
// A callback function that will be called when ibus_config_set_value_async()
// request is finished.
static void SetInputMethodConfigCallback(GObject* source_object,
GAsyncResult* res,
gpointer user_data);
// Called when the input method process is shut down.
static void OnIBusDaemonExit(GPid pid,
gint status,
IBusControllerImpl* controller);
// Connection to the ibus-daemon via IBus API. These objects are used to
// call ibus-daemon's API (e.g. activate input methods, set config, ...)
IBusBus* ibus_;
IBusConfig* ibus_config_;
// The current ibus_daemon address. This value is assigned at the launching
// ibus-daemon and used in bus connection initialization.
std::string ibus_daemon_address_;
// The process handle of the IBus daemon. kNullProcessHandle if it's not
// running.
base::ProcessHandle process_handle_;
// Current input context path.
std::string current_input_context_path_;
// The input method ID which is currently selected. The ID is sent to the
// daemon when |ibus_| and |ibus_config_| connections are both established.
std::string current_input_method_id_;
// An object which knows all valid input methods and layout IDs.
InputMethodWhitelist whitelist_;
// Represents ibus-daemon's status.
IBusDaemonStatus ibus_daemon_status_;
// Used for making callbacks for PostTask.
base::WeakPtrFactory<IBusControllerImpl> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(IBusControllerImpl);
};
} // namespace input_method
} // namespace chromeos
#endif // CHROME_BROWSER_CHROMEOS_INPUT_METHOD_IBUS_CONTROLLER_IMPL_H_
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