src/ash/display/resolution_notification_controller.cc

   1 // Copyright 2013 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 "ash/display/resolution_notification_controller.h"
   6
   7 #include "ash/display/display_controller.h"
   8 #include "ash/display/display_manager.h"
   9 #include "ash/shell.h"
  10 #include "ash/system/system_notifier.h"
  11 #include "base/strings/utf_string_conversions.h"
  12 #include "grit/ash_resources.h"
  13 #include "grit/ash_strings.h"
  14 #include "ui/base/l10n/l10n_util.h"
  15 #include "ui/base/l10n/time_format.h"
  16 #include "ui/base/resource/resource_bundle.h"
  17 #include "ui/gfx/display.h"
  18 #include "ui/gfx/screen.h"
  19 #include "ui/message_center/message_center.h"
  20 #include "ui/message_center/notification.h"
  21 #include "ui/message_center/notification_delegate.h"
  22
  23 using message_center::Notification;
  24
  25 namespace ash {
  26 namespace {
  27
  28 bool g_use_timer = true;
  29
  30 class ResolutionChangeNotificationDelegate
  31     : public message_center::NotificationDelegate {
  32  public:
  33   ResolutionChangeNotificationDelegate(
  34       ResolutionNotificationController* controller,
  35       bool has_timeout);
  36
  37  protected:
  38   virtual ~ResolutionChangeNotificationDelegate();
  39
  40  private:
  41   // message_center::NotificationDelegate overrides:
  42   virtual void Display() OVERRIDE;
  43   virtual void Error() OVERRIDE;
  44   virtual void Close(bool by_user) OVERRIDE;
  45   virtual void Click() OVERRIDE;
  46   virtual bool HasClickedListener() OVERRIDE;
  47   virtual void ButtonClick(int button_index) OVERRIDE;
  48
  49   ResolutionNotificationController* controller_;
  50   bool has_timeout_;
  51
  52   DISALLOW_COPY_AND_ASSIGN(ResolutionChangeNotificationDelegate);
  53 };
  54
  55 ResolutionChangeNotificationDelegate::ResolutionChangeNotificationDelegate(
  56     ResolutionNotificationController* controller,
  57     bool has_timeout)
  58     : controller_(controller),
  59       has_timeout_(has_timeout) {
  60   DCHECK(controller_);
  61 }
  62
  63 ResolutionChangeNotificationDelegate::~ResolutionChangeNotificationDelegate() {
  64 }
  65
  66 void ResolutionChangeNotificationDelegate::Display() {
  67 }
  68
  69 void ResolutionChangeNotificationDelegate::Error() {
  70 }
  71
  72 void ResolutionChangeNotificationDelegate::Close(bool by_user) {
  73   if (by_user)
  74     controller_->AcceptResolutionChange(false);
  75 }
  76
  77 void ResolutionChangeNotificationDelegate::Click() {
  78   controller_->AcceptResolutionChange(true);
  79 }
  80
  81 bool ResolutionChangeNotificationDelegate::HasClickedListener() {
  82   return true;
  83 }
  84
  85 void ResolutionChangeNotificationDelegate::ButtonClick(int button_index) {
  86   // If there's the timeout, the first button is "Accept". Otherwise the
  87   // button click should be "Revert".
  88   if (has_timeout_ && button_index == 0)
  89     controller_->AcceptResolutionChange(true);
  90   else
  91     controller_->RevertResolutionChange();
  92 }
  93
  94 }  // namespace
  95
  96 // static
  97 const int ResolutionNotificationController::kTimeoutInSec = 15;
  98
  99 // static
 100 const char ResolutionNotificationController::kNotificationId[] =
 101     "chrome://settings/display/resolution";
 102
 103 struct ResolutionNotificationController::ResolutionChangeInfo {
 104   ResolutionChangeInfo(int64 display_id,
 105                        const gfx::Size& old_resolution,
 106                        const gfx::Size& new_resolution,
 107                        const base::Closure& accept_callback);
 108   ~ResolutionChangeInfo();
 109
 110   // The id of the display where the resolution change happens.
 111   int64 display_id;
 112
 113   // The resolution before the change.
 114   gfx::Size old_resolution;
 115
 116   // The requested resolution. Note that this may be different from
 117   // |current_resolution| which is the actual resolution set.
 118   gfx::Size new_resolution;
 119
 120   // The actual resolution after the change.
 121   gfx::Size current_resolution;
 122
 123   // The callback when accept is chosen.
 124   base::Closure accept_callback;
 125
 126   // The remaining timeout in seconds. 0 if the change does not time out.
 127   uint8 timeout_count;
 128
 129   // The timer to invoke OnTimerTick() every second. This cannot be
 130   // OneShotTimer since the message contains text "automatically closed in xx
 131   // seconds..." which has to be updated every second.
 132   base::RepeatingTimer<ResolutionNotificationController> timer;
 133
 134  private:
 135   DISALLOW_COPY_AND_ASSIGN(ResolutionChangeInfo);
 136 };
 137
 138 ResolutionNotificationController::ResolutionChangeInfo::ResolutionChangeInfo(
 139     int64 display_id,
 140     const gfx::Size& old_resolution,
 141     const gfx::Size& new_resolution,
 142     const base::Closure& accept_callback)
 143     : display_id(display_id),
 144       old_resolution(old_resolution),
 145       new_resolution(new_resolution),
 146       accept_callback(accept_callback),
 147       timeout_count(0) {
 148   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 149   if (!display_manager->HasInternalDisplay() &&
 150       display_manager->num_connected_displays() == 1u) {
 151     timeout_count = kTimeoutInSec;
 152   }
 153 }
 154
 155 ResolutionNotificationController::ResolutionChangeInfo::
 156     ~ResolutionChangeInfo() {
 157 }
 158
 159 ResolutionNotificationController::ResolutionNotificationController() {
 160   Shell::GetInstance()->display_controller()->AddObserver(this);
 161   Shell::GetScreen()->AddObserver(this);
 162 }
 163
 164 ResolutionNotificationController::~ResolutionNotificationController() {
 165   Shell::GetInstance()->display_controller()->RemoveObserver(this);
 166   Shell::GetScreen()->RemoveObserver(this);
 167 }
 168
 169 void ResolutionNotificationController::SetDisplayResolutionAndNotify(
 170     int64 display_id,
 171     const gfx::Size& old_resolution,
 172     const gfx::Size& new_resolution,
 173     const base::Closure& accept_callback) {
 174   // If multiple resolution changes are invoked for the same display,
 175   // the original resolution for the first resolution change has to be used
 176   // instead of the specified |old_resolution|.
 177   gfx::Size original_resolution;
 178   if (change_info_ && change_info_->display_id == display_id) {
 179     DCHECK(change_info_->new_resolution == old_resolution);
 180     original_resolution = change_info_->old_resolution;
 181   }
 182
 183   change_info_.reset(new ResolutionChangeInfo(
 184       display_id, old_resolution, new_resolution, accept_callback));
 185   if (!original_resolution.IsEmpty())
 186     change_info_->old_resolution = original_resolution;
 187
 188   // SetDisplayResolution() causes OnConfigurationChanged() and the notification
 189   // will be shown at that point.
 190   Shell::GetInstance()->display_manager()->SetDisplayResolution(
 191       display_id, new_resolution);
 192 }
 193
 194 bool ResolutionNotificationController::DoesNotificationTimeout() {
 195   return change_info_ && change_info_->timeout_count > 0;
 196 }
 197
 198 void ResolutionNotificationController::CreateOrUpdateNotification(
 199     bool enable_spoken_feedback) {
 200   message_center::MessageCenter* message_center =
 201       message_center::MessageCenter::Get();
 202   if (!change_info_) {
 203     message_center->RemoveNotification(kNotificationId, false /* by_user */);
 204     return;
 205   }
 206
 207   base::string16 timeout_message;
 208   message_center::RichNotificationData data;
 209   if (change_info_->timeout_count > 0) {
 210     data.buttons.push_back(message_center::ButtonInfo(
 211         l10n_util::GetStringUTF16(IDS_ASH_DISPLAY_RESOLUTION_CHANGE_ACCEPT)));
 212     timeout_message = l10n_util::GetStringFUTF16(
 213         IDS_ASH_DISPLAY_RESOLUTION_TIMEOUT,
 214         ui::TimeFormat::Simple(
 215             ui::TimeFormat::FORMAT_DURATION, ui::TimeFormat::LENGTH_LONG,
 216             base::TimeDelta::FromSeconds(change_info_->timeout_count)));
 217   }
 218   data.buttons.push_back(message_center::ButtonInfo(
 219         l10n_util::GetStringUTF16(IDS_ASH_DISPLAY_RESOLUTION_CHANGE_REVERT)));
 220
 221   data.should_make_spoken_feedback_for_popup_updates = enable_spoken_feedback;
 222
 223   const base::string16 display_name = base::UTF8ToUTF16(
 224       Shell::GetInstance()->display_manager()->GetDisplayNameForId(
 225           change_info_->display_id));
 226   const base::string16 message =
 227       (change_info_->new_resolution == change_info_->current_resolution) ?
 228       l10n_util::GetStringFUTF16(
 229           IDS_ASH_STATUS_TRAY_DISPLAY_RESOLUTION_CHANGED,
 230           display_name,
 231           base::UTF8ToUTF16(change_info_->new_resolution.ToString())) :
 232       l10n_util::GetStringFUTF16(
 233           IDS_ASH_STATUS_TRAY_DISPLAY_RESOLUTION_CHANGED_TO_UNSUPPORTED,
 234           display_name,
 235           base::UTF8ToUTF16(change_info_->new_resolution.ToString()),
 236           base::UTF8ToUTF16(change_info_->current_resolution.ToString()));
 237
 238   ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance();
 239   scoped_ptr<Notification> notification(new Notification(
 240       message_center::NOTIFICATION_TYPE_SIMPLE,
 241       kNotificationId,
 242       message,
 243       timeout_message,
 244       bundle.GetImageNamed(IDR_AURA_NOTIFICATION_DISPLAY),
 245       base::string16() /* display_source */,
 246       message_center::NotifierId(
 247           message_center::NotifierId::SYSTEM_COMPONENT,
 248           system_notifier::kNotifierDisplayResolutionChange),
 249       data,
 250       new ResolutionChangeNotificationDelegate(
 251           this, change_info_->timeout_count > 0)));
 252   notification->SetSystemPriority();
 253   message_center->AddNotification(notification.Pass());
 254 }
 255
 256 void ResolutionNotificationController::OnTimerTick() {
 257   if (!change_info_)
 258     return;
 259
 260   --change_info_->timeout_count;
 261   if (change_info_->timeout_count == 0)
 262     RevertResolutionChange();
 263   else
 264     CreateOrUpdateNotification(false);
 265 }
 266
 267 void ResolutionNotificationController::AcceptResolutionChange(
 268     bool close_notification) {
 269   if (close_notification) {
 270     message_center::MessageCenter::Get()->RemoveNotification(
 271         kNotificationId, false /* by_user */);
 272   }
 273   base::Closure callback = change_info_->accept_callback;
 274   change_info_.reset();
 275   callback.Run();
 276 }
 277
 278 void ResolutionNotificationController::RevertResolutionChange() {
 279   message_center::MessageCenter::Get()->RemoveNotification(
 280       kNotificationId, false /* by_user */);
 281   int64 display_id = change_info_->display_id;
 282   gfx::Size old_resolution = change_info_->old_resolution;
 283   change_info_.reset();
 284   Shell::GetInstance()->display_manager()->SetDisplayResolution(
 285       display_id, old_resolution);
 286 }
 287
 288 void ResolutionNotificationController::OnDisplayBoundsChanged(
 289     const gfx::Display& display) {
 290 }
 291
 292 void ResolutionNotificationController::OnDisplayAdded(
 293     const gfx::Display& new_display) {
 294 }
 295
 296 void ResolutionNotificationController::OnDisplayRemoved(
 297     const gfx::Display& old_display) {
 298   if (change_info_ && change_info_->display_id == old_display.id())
 299     RevertResolutionChange();
 300 }
 301
 302 void ResolutionNotificationController::OnDisplayConfigurationChanged() {
 303   if (!change_info_)
 304     return;
 305
 306   const DisplayInfo& info = Shell::GetInstance()->display_manager()->
 307       GetDisplayInfo(change_info_->display_id);
 308   change_info_->current_resolution = info.bounds_in_native().size();
 309   CreateOrUpdateNotification(true);
 310   if (g_use_timer && change_info_->timeout_count > 0) {
 311     change_info_->timer.Start(FROM_HERE,
 312                               base::TimeDelta::FromSeconds(1),
 313                               this,
 314                               &ResolutionNotificationController::OnTimerTick);
 315   }
 316 }
 317
 318 void ResolutionNotificationController::SuppressTimerForTest() {
 319   g_use_timer = false;
 320 }
 321
 322 }  // namespace ash