src/chrome/browser/ui/ash/caps_lock_delegate_chromeos.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/ui/ash/caps_lock_delegate_chromeos.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/logging.h"
   9 #include "base/sys_info.h"
  10 #include "chrome/common/chrome_switches.h"
  11 #include "chromeos/ime/xkeyboard.h"
  12 #include "content/public/browser/browser_thread.h"
  13
  14 CapsLockDelegate::CapsLockDelegate(chromeos::input_method::XKeyboard* xkeyboard)
  15     : xkeyboard_(xkeyboard),
  16       is_running_on_chromeos_(base::SysInfo::IsRunningOnChromeOS()),
  17       caps_lock_is_on_(xkeyboard_->CapsLockIsEnabled()) {
  18   chromeos::SystemKeyEventListener* system_event_listener =
  19       chromeos::SystemKeyEventListener::GetInstance();
  20   // SystemKeyEventListener should be instantiated when we're running production
  21   // code on Chrome OS.
  22   DCHECK(!is_running_on_chromeos_ || system_event_listener ||
  23          CommandLine::ForCurrentProcess()->HasSwitch(switches::kTestType));
  24   if (system_event_listener)
  25     system_event_listener->AddCapsLockObserver(this);
  26 }
  27
  28 CapsLockDelegate::~CapsLockDelegate() {
  29   chromeos::SystemKeyEventListener* system_event_listener =
  30       chromeos::SystemKeyEventListener::GetInstance();
  31   if (system_event_listener)
  32     system_event_listener->RemoveCapsLockObserver(this);
  33 }
  34
  35 bool CapsLockDelegate::IsCapsLockEnabled() const {
  36   return caps_lock_is_on_;
  37 }
  38
  39 void CapsLockDelegate::SetCapsLockEnabled(bool enabled) {
  40   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
  41   if (is_running_on_chromeos_) {
  42     xkeyboard_->SetCapsLockEnabled(enabled);
  43     return;
  44   }
  45 }
  46
  47 void CapsLockDelegate::ToggleCapsLock() {
  48   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
  49   if (is_running_on_chromeos_) {
  50     xkeyboard_->SetCapsLockEnabled(!caps_lock_is_on_);
  51     return;
  52   }
  53 }
  54
  55 void CapsLockDelegate::OnCapsLockChange(bool enabled) {
  56   caps_lock_is_on_ = enabled;
  57 }