chrome/browser/extensions/api/virtual_keyboard_private/chrome_virtual_keyboard_delegate.cc

   1 // Copyright 2014 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/extensions/api/virtual_keyboard_private/chrome_virtual_keyboard_delegate.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/metrics/histogram.h"
   9 #include "base/metrics/user_metrics_action.h"
  10 #include "base/strings/string16.h"
  11 #include "chrome/browser/chromeos/login/lock/screen_locker.h"
  12 #include "chrome/browser/chromeos/login/ui/user_adding_screen.h"
  13 #include "chrome/browser/profiles/profile_manager.h"
  14 #include "chrome/browser/ui/chrome_pages.h"
  15 #include "chrome/common/url_constants.h"
  16 #include "components/user_manager/user_manager.h"
  17 #include "content/public/browser/user_metrics.h"
  18 #include "ui/aura/window_tree_host.h"
  19 #include "ui/keyboard/keyboard_controller.h"
  20 #include "ui/keyboard/keyboard_switches.h"
  21 #include "ui/keyboard/keyboard_util.h"
  22
  23 namespace {
  24
  25 aura::Window* GetKeyboardContainer() {
  26   keyboard::KeyboardController* controller =
  27       keyboard::KeyboardController::GetInstance();
  28   return controller ? controller->GetContainerWindow() : nullptr;
  29 }
  30
  31 }  // namespace
  32
  33 namespace extensions {
  34
  35 bool ChromeVirtualKeyboardDelegate::GetKeyboardConfig(
  36     base::DictionaryValue* results) {
  37   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
  38   results->SetString("layout", keyboard::GetKeyboardLayout());
  39   results->SetBoolean("a11ymode", keyboard::GetAccessibilityKeyboardEnabled());
  40   results->SetBoolean("experimental",
  41                       keyboard::IsExperimentalInputViewEnabled());
  42   return true;
  43 }
  44
  45 bool ChromeVirtualKeyboardDelegate::HideKeyboard() {
  46   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
  47   keyboard::KeyboardController* controller =
  48       keyboard::KeyboardController::GetInstance();
  49   if (!controller)
  50     return false;
  51
  52   UMA_HISTOGRAM_ENUMERATION("VirtualKeyboard.KeyboardControlEvent",
  53                             keyboard::KEYBOARD_CONTROL_HIDE_USER,
  54                             keyboard::KEYBOARD_CONTROL_MAX);
  55
  56   // Pass HIDE_REASON_MANUAL since calls to HideKeyboard as part of this API
  57   // would be user generated.
  58   controller->HideKeyboard(keyboard::KeyboardController::HIDE_REASON_MANUAL);
  59   return true;
  60 }
  61
  62 bool ChromeVirtualKeyboardDelegate::InsertText(const base::string16& text) {
  63   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
  64   keyboard::KeyboardController* controller =
  65       keyboard::KeyboardController::GetInstance();
  66   if (!controller)
  67     return false;
  68   aura::Window* window = controller->GetContainerWindow();
  69   return window && keyboard::InsertText(text, window);
  70 }
  71
  72 bool ChromeVirtualKeyboardDelegate::OnKeyboardLoaded() {
  73   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
  74   keyboard::MarkKeyboardLoadFinished();
  75   base::UserMetricsAction("VirtualKeyboardLoaded");
  76   return true;
  77 }
  78
  79 bool ChromeVirtualKeyboardDelegate::LockKeyboard(bool state) {
  80   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
  81   keyboard::KeyboardController* controller =
  82       keyboard::KeyboardController::GetInstance();
  83   if (!controller)
  84     return false;
  85
  86   keyboard::KeyboardController::GetInstance()->set_lock_keyboard(state);
  87   return true;
  88 }
  89
  90 bool ChromeVirtualKeyboardDelegate::MoveCursor(int swipe_direction,
  91                                                int modifier_flags) {
  92   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
  93   if (!CommandLine::ForCurrentProcess()->HasSwitch(
  94           keyboard::switches::kEnableSwipeSelection)) {
  95     return false;
  96   }
  97   aura::Window* window = GetKeyboardContainer();
  98   return window && keyboard::MoveCursor(
  99                        swipe_direction, modifier_flags, window->GetHost());
 100 }
 101
 102 bool ChromeVirtualKeyboardDelegate::SendKeyEvent(const std::string& type,
 103                                                  int char_value,
 104                                                  int key_code,
 105                                                  const std::string& key_name,
 106                                                  int modifiers) {
 107   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
 108   aura::Window* window = GetKeyboardContainer();
 109   return window && keyboard::SendKeyEvent(type,
 110                                           char_value,
 111                                           key_code,
 112                                           key_name,
 113                                           modifiers,
 114                                           window->GetHost());
 115 }
 116
 117 bool ChromeVirtualKeyboardDelegate::ShowLanguageSettings() {
 118   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
 119   content::RecordAction(base::UserMetricsAction("OpenLanguageOptionsDialog"));
 120   chrome::ShowSettingsSubPageForProfile(ProfileManager::GetActiveUserProfile(),
 121                                         chrome::kLanguageOptionsSubPage);
 122   return true;
 123 }
 124
 125 bool ChromeVirtualKeyboardDelegate::IsLanguageSettingsEnabled() {
 126   return (user_manager::UserManager::Get()->IsUserLoggedIn() &&
 127           !chromeos::UserAddingScreen::Get()->IsRunning() &&
 128           !(chromeos::ScreenLocker::default_screen_locker() &&
 129             chromeos::ScreenLocker::default_screen_locker()->locked()));
 130 }
 131
 132 }  // namespace extensions