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// Copyright 2014 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 "ash/ash_touch_exploration_manager_chromeos.h"
#include "ash/accessibility_delegate.h"
#include "ash/audio/sounds.h"
#include "ash/root_window_controller.h"
#include "ash/shell.h"
#include "ash/system/tray/system_tray_notifier.h"
#include "base/command_line.h"
#include "chromeos/audio/chromeos_sounds.h"
#include "chromeos/audio/cras_audio_handler.h"
#include "chromeos/chromeos_switches.h"
#include "ui/chromeos/touch_exploration_controller.h"
namespace ash {
AshTouchExplorationManager::AshTouchExplorationManager(
RootWindowController* root_window_controller)
: root_window_controller_(root_window_controller),
audio_handler_(chromeos::CrasAudioHandler::Get()) {
Shell::GetInstance()->system_tray_notifier()->AddAccessibilityObserver(this);
UpdateTouchExplorationState();
}
AshTouchExplorationManager::~AshTouchExplorationManager() {
SystemTrayNotifier* system_tray_notifier =
Shell::GetInstance()->system_tray_notifier();
if (system_tray_notifier)
system_tray_notifier->RemoveAccessibilityObserver(this);
}
void AshTouchExplorationManager::OnAccessibilityModeChanged(
ui::AccessibilityNotificationVisibility notify) {
UpdateTouchExplorationState();
}
void AshTouchExplorationManager::SetOutputLevel(int volume) {
if (volume > 0) {
if (audio_handler_->IsOutputMuted()) {
audio_handler_->SetOutputMute(false);
}
}
audio_handler_->SetOutputVolumePercent(volume);
// Avoid negative volume.
if (audio_handler_->IsOutputVolumeBelowDefaultMuteLevel())
audio_handler_->SetOutputMute(true);
}
void AshTouchExplorationManager::SilenceSpokenFeedback() {
AccessibilityDelegate* delegate =
Shell::GetInstance()->accessibility_delegate();
if (!delegate->IsSpokenFeedbackEnabled())
return;
delegate->SilenceSpokenFeedback();
}
void AshTouchExplorationManager::PlayVolumeAdjustEarcon() {
if (!VolumeAdjustSoundEnabled())
return;
if (!audio_handler_->IsOutputMuted() &&
audio_handler_->GetOutputVolumePercent() != 100)
PlaySystemSoundIfSpokenFeedback(chromeos::SOUND_VOLUME_ADJUST);
}
void AshTouchExplorationManager::PlayPassthroughEarcon() {
Shell::GetInstance()->accessibility_delegate()->PlayEarcon(
chromeos::SOUND_PASSTHROUGH);
}
void AshTouchExplorationManager::PlayExitScreenEarcon() {
Shell::GetInstance()->accessibility_delegate()->PlayEarcon(
chromeos::SOUND_EXIT_SCREEN);
}
void AshTouchExplorationManager::PlayEnterScreenEarcon() {
Shell::GetInstance()->accessibility_delegate()->PlayEarcon(
chromeos::SOUND_ENTER_SCREEN);
}
void AshTouchExplorationManager::UpdateTouchExplorationState() {
AccessibilityDelegate* delegate =
Shell::GetInstance()->accessibility_delegate();
bool enabled = delegate->IsSpokenFeedbackEnabled();
if (enabled && !touch_exploration_controller_.get()) {
touch_exploration_controller_.reset(new ui::TouchExplorationController(
root_window_controller_->GetRootWindow(), this));
} else if (!enabled) {
touch_exploration_controller_.reset();
}
}
bool AshTouchExplorationManager::VolumeAdjustSoundEnabled() {
return !base::CommandLine::ForCurrentProcess()->HasSwitch(
chromeos::switches::kDisableVolumeAdjustSound);
}
} // namespace ash
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