ChromeOS: Remove unused IBus classes from chromeos/.

chromeos/ime/ibus_daemon_controller.cc

 // 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/ime/ibus_daemon_controller.h"
 
 #include "base/bind.h"
-#include "base/environment.h"
+#include "base/files/file_path.h"
 #include "base/files/file_path_watcher.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/observer_list.h"
-#include "base/process/launch.h"
-#include "base/process/process_handle.h"
-#include "base/rand_util.h"
-#include "base/strings/string_util.h"
-#include "base/strings/stringprintf.h"
-#include "base/threading/thread_checker.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 
 namespace chromeos {
 
 namespace {
 
 IBusDaemonController* g_ibus_daemon_controller = NULL;
 base::FilePathWatcher* g_file_path_watcher = NULL;
 
 // Called when the ibus-daemon address file is modified.
@@ skipping 23 matching lines @@
   g_file_path_watcher = new base::FilePathWatcher;
   bool result = g_file_path_watcher->Watch(
       base::FilePath::FromUTF8Unsafe(address_file_path),
       false,  // do not watch child directory.
       base::Bind(&OnFilePathChanged,
                  ui_task_runner,
                  closure));
   DCHECK(result);
 }
 
-// The implementation of IBusDaemonController.
-class IBusDaemonControllerImpl : public IBusDaemonController {
- public:
-  // Represents current ibus-daemon status.
-  enum IBusDaemonStatus {
-    IBUS_DAEMON_INITIALIZING,
-    IBUS_DAEMON_RUNNING,
-    IBUS_DAEMON_SHUTTING_DOWN,
-    IBUS_DAEMON_STOP,
-  };
-
-  IBusDaemonControllerImpl(
-      const scoped_refptr<base::SequencedTaskRunner>& ui_task_runner,
-      const scoped_refptr<base::SequencedTaskRunner>& file_task_runner)
-      : process_handle_(base::kNullProcessHandle),
-      ibus_daemon_status_(IBUS_DAEMON_STOP),
-      ui_task_runner_(ui_task_runner),
-      file_task_runner_(file_task_runner),
-      weak_ptr_factory_(this) {
-  }
-
-  virtual ~IBusDaemonControllerImpl() {}
-
-  // IBusDaemonController override:
-  virtual void AddObserver(Observer* observer) OVERRIDE {
-    DCHECK(thread_checker_.CalledOnValidThread());
-    observers_.AddObserver(observer);
-  }
-
-  // IBusDaemonController override:
-  virtual void RemoveObserver(Observer* observer) OVERRIDE {
-    DCHECK(thread_checker_.CalledOnValidThread());
-    observers_.RemoveObserver(observer);
-  }
-
-  // IBusDaemonController override:
-  virtual bool Start() OVERRIDE {
-    DCHECK(thread_checker_.CalledOnValidThread());
-    if (ibus_daemon_status_ == IBUS_DAEMON_RUNNING)
-      return true;
-    if (ibus_daemon_status_ == IBUS_DAEMON_STOP ||
-        ibus_daemon_status_ == IBUS_DAEMON_SHUTTING_DOWN) {
-      return StartIBusDaemon();
-    }
-    return true;
-  }
-
-  // IBusDaemonController override:
-  virtual bool Stop() OVERRIDE {
-    DCHECK(thread_checker_.CalledOnValidThread());
-    NOTREACHED() << "Termination of ibus-daemon is not supported"
-                 << "http://crosbug.com/27051";
-    return false;
-  }
-
- private:
-  // Starts ibus-daemon service.
-  bool StartIBusDaemon() {
-    if (ibus_daemon_status_ == IBUS_DAEMON_INITIALIZING ||
-        ibus_daemon_status_ == IBUS_DAEMON_RUNNING) {
-      DVLOG(1) << "MaybeLaunchIBusDaemon: ibus-daemon is already running.";
-      return false;
-    }
-
-    ibus_daemon_status_ = IBUS_DAEMON_INITIALIZING;
-    ibus_daemon_address_ = base::StringPrintf(
-        "unix:abstract=ibus-%d",
-        base::RandInt(0, std::numeric_limits<int>::max()));
-
-    scoped_ptr<base::Environment> env(base::Environment::Create());
-    std::string address_file_path;
-    env->GetVar("IBUS_ADDRESS_FILE", &address_file_path);
-    DCHECK(!address_file_path.empty());
-
-    // Set up ibus-daemon address file watcher before launching ibus-daemon,
-    // because if watcher starts after ibus-daemon, we may miss the ibus
-    // connection initialization.
-    bool success = file_task_runner_->PostTaskAndReply(
-        FROM_HERE,
-        base::Bind(&StartWatch,
-                   address_file_path,
-                   base::Bind(&IBusDaemonControllerImpl::FilePathChanged,
-                              weak_ptr_factory_.GetWeakPtr(),
-                              ibus_daemon_address_),
-                   ui_task_runner_),
-        base::Bind(&IBusDaemonControllerImpl::LaunchIBusDaemon,
-                   weak_ptr_factory_.GetWeakPtr(),
-                   ibus_daemon_address_));
-    DCHECK(success);
-    return true;
-  }
-
-  // Launhes actual ibus-daemon process.
-  void LaunchIBusDaemon(const std::string& ibus_address) {
-    DCHECK(thread_checker_.CalledOnValidThread());
-    DCHECK_EQ(base::kNullProcessHandle, process_handle_);
-    static const char kIBusDaemonPath[] = "/usr/bin/ibus-daemon";
-    // TODO(zork): Send output to /var/log/ibus.log
-    std::vector<std::string> ibus_daemon_command_line;
-    ibus_daemon_command_line.push_back(kIBusDaemonPath);
-    ibus_daemon_command_line.push_back("--panel=disable");
-    ibus_daemon_command_line.push_back("--cache=none");
-    ibus_daemon_command_line.push_back("--restart");
-    ibus_daemon_command_line.push_back("--replace");
-    ibus_daemon_command_line.push_back("--address=" + ibus_address);
-
-    if (!base::LaunchProcess(ibus_daemon_command_line,
-                             base::LaunchOptions(),
-                             &process_handle_)) {
-      LOG(WARNING) << "Could not launch: "
-                   << JoinString(ibus_daemon_command_line, " ");
-    }
-  }
-
-  // Called by FilePathWatcher when the ibus-daemon address file is changed.
-  // This function will be called on FILE thread.
-  void FilePathChanged(const std::string& ibus_address) {
-    ui_task_runner_->PostTask(
-        FROM_HERE,
-        base::Bind(&IBusDaemonControllerImpl::IBusDaemonInitializationDone,
-                   weak_ptr_factory_.GetWeakPtr(),
-                   ibus_address));
-  }
-
-  // Called by FilePathChaged function, this function should be called on UI
-  // thread.
-  void IBusDaemonInitializationDone(const std::string& ibus_address) {
-    if (ibus_daemon_address_ != ibus_address)
-      return;
-
-    if (ibus_daemon_status_ != IBUS_DAEMON_INITIALIZING) {
-      // Stop() or OnIBusDaemonExit() has already been called.
-      return;
-    }
-
-    DBusThreadManager::Get()->InitIBusBus(
-        ibus_address,
-        base::Bind(&IBusDaemonControllerImpl::OnIBusDaemonDisconnected,
-                   weak_ptr_factory_.GetWeakPtr(),
-                   base::GetProcId(process_handle_)));
-    ibus_daemon_status_ = IBUS_DAEMON_RUNNING;
-    FOR_EACH_OBSERVER(Observer, observers_, OnConnected());
-
-    VLOG(1) << "The ibus-daemon initialization is done.";
-  }
-
-  // Called when the connection with ibus-daemon is disconnected.
-  void OnIBusDaemonDisconnected(base::ProcessId pid) {
-    if (!chromeos::DBusThreadManager::Get())
-      return;  // Expected disconnection at shutting down. do nothing.
-
-    if (process_handle_ != base::kNullProcessHandle) {
-      if (base::GetProcId(process_handle_) == pid) {
-        // ibus-daemon crashed.
-        // TODO(nona): Shutdown ibus-bus connection.
-        process_handle_ = base::kNullProcessHandle;
-      } else {
-        // This condition is as follows.
-        // 1. Called Stop (process_handle_ becomes null)
-        // 2. Called LaunchProcess (process_handle_ becomes new instance)
-        // 3. Callbacked OnIBusDaemonExit for old instance and reach here.
-        // In this case, we should not reset process_handle_ as null, and do not
-        // re-launch ibus-daemon.
-        return;
-      }
-    }
-
-    const IBusDaemonStatus on_exit_state = ibus_daemon_status_;
-    ibus_daemon_status_ = IBUS_DAEMON_STOP;
-    FOR_EACH_OBSERVER(Observer, observers_, OnDisconnected());
-
-    if (on_exit_state == IBUS_DAEMON_SHUTTING_DOWN)
-      return;  // Normal exitting, so do nothing.
-
-    LOG(ERROR) << "The ibus-daemon crashed. Re-launching...";
-    StartIBusDaemon();
-  }
-
-  // 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_;
-
-  // Represents ibus-daemon's status.
-  IBusDaemonStatus ibus_daemon_status_;
-
-  // The task runner of UI thread.
-  scoped_refptr<base::SequencedTaskRunner> ui_task_runner_;
-
-  // The task runner of FILE thread.
-  scoped_refptr<base::SequencedTaskRunner> file_task_runner_;
-
-  ObserverList<Observer> observers_;
-  base::ThreadChecker thread_checker_;
-
-  // Used for making callbacks for PostTask.
-  base::WeakPtrFactory<IBusDaemonControllerImpl> weak_ptr_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(IBusDaemonControllerImpl);
-};
-
 // An implementation of IBusDaemonController without ibus-daemon interaction.
 // Currently this class is used only on linux desktop.
 // TODO(nona): Remove IBusDaemonControlelr this once crbug.com/171351 is fixed.
 class IBusDaemonControllerDaemonlessImpl : public IBusDaemonController {
  public:
   IBusDaemonControllerDaemonlessImpl()
       : is_started_(false) {}
   virtual ~IBusDaemonControllerDaemonlessImpl() {}
 
   // IBusDaemonController overrides:
@@ skipping 67 matching lines @@
   delete g_ibus_daemon_controller;
   g_ibus_daemon_controller = NULL;
 }
 
 // static
 IBusDaemonController* IBusDaemonController::GetInstance() {
   return g_ibus_daemon_controller;
 }
 
 }  // namespace chromeos