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lock_screen.cc
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lock_screen.cc
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// Copyright 2017 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/login/ui/lock_screen.h"
#include <memory>
#include <utility>
#include "ash/login/ui/lock_contents_view.h"
#include "ash/login/ui/lock_debug_view.h"
#include "ash/login/ui/lock_window.h"
#include "ash/login/ui/login_data_dispatcher.h"
#include "ash/login/ui/login_detachable_base_model.h"
#include "ash/public/cpp/login_constants.h"
#include "ash/public/interfaces/session_controller.mojom.h"
#include "ash/root_window_controller.h"
#include "ash/session/session_controller.h"
#include "ash/shell.h"
#include "ash/tray_action/tray_action.h"
#include "ash/wallpaper/wallpaper_widget_controller.h"
#include "base/command_line.h"
#include "chromeos/chromeos_switches.h"
#include "ui/compositor/layer.h"
#include "ui/display/display.h"
#include "ui/display/screen.h"
namespace ash {
namespace {
ui::Layer* GetWallpaperLayerForWindow(aura::Window* window) {
return RootWindowController::ForWindow(window)
->wallpaper_widget_controller()
->GetWidget()
->GetLayer();
}
// Global lock screen instance. There can only ever be on lock screen at a
// time.
LockScreen* instance_ = nullptr;
} // namespace
LockScreen::TestApi::TestApi(LockScreen* lock_screen)
: lock_screen_(lock_screen) {}
LockScreen::TestApi::~TestApi() = default;
LockContentsView* LockScreen::TestApi::contents_view() const {
return lock_screen_->contents_view_;
}
LockScreen::LockScreen(ScreenType type)
: type_(type), tray_action_observer_(this), session_observer_(this) {
tray_action_observer_.Add(ash::Shell::Get()->tray_action());
}
LockScreen::~LockScreen() = default;
// static
LockScreen* LockScreen::Get() {
CHECK(instance_);
return instance_;
}
// static
void LockScreen::Show(ScreenType type) {
CHECK(!instance_);
instance_ = new LockScreen(type);
instance_->window_ = new LockWindow(Shell::GetAshConfig());
instance_->window_->SetBounds(
display::Screen::GetScreen()->GetPrimaryDisplay().bounds());
auto data_dispatcher = std::make_unique<LoginDataDispatcher>();
auto initial_note_action_state =
Shell::Get()->tray_action()->GetLockScreenNoteState();
if (base::CommandLine::ForCurrentProcess()->HasSwitch(
chromeos::switches::kShowLoginDevOverlay)) {
auto* debug_view =
new LockDebugView(initial_note_action_state, data_dispatcher.get());
instance_->contents_view_ = debug_view->lock();
instance_->window_->SetContentsView(debug_view);
} else {
auto detachable_base_model = LoginDetachableBaseModel::Create(
Shell::Get()->detachable_base_handler(), data_dispatcher.get());
instance_->contents_view_ =
new LockContentsView(initial_note_action_state, data_dispatcher.get(),
std::move(detachable_base_model));
instance_->window_->SetContentsView(instance_->contents_view_);
}
instance_->window_->set_data_dispatcher(std::move(data_dispatcher));
instance_->window_->Show();
}
// static
bool LockScreen::IsShown() {
return !!instance_;
}
void LockScreen::Destroy() {
CHECK_EQ(instance_, this);
// Restore the initial wallpaper bluriness if they were changed.
for (auto it = initial_blur_.begin(); it != initial_blur_.end(); ++it)
it->first->SetLayerBlur(it->second);
window_->Close();
delete instance_;
instance_ = nullptr;
}
void LockScreen::ToggleBlurForDebug() {
// Save the initial wallpaper bluriness upon the first time this is called.
if (instance_->initial_blur_.empty()) {
for (aura::Window* window : Shell::GetAllRootWindows()) {
ui::Layer* layer = GetWallpaperLayerForWindow(window);
instance_->initial_blur_[layer] = layer->layer_blur();
}
}
for (aura::Window* window : Shell::GetAllRootWindows()) {
ui::Layer* layer = GetWallpaperLayerForWindow(window);
if (layer->layer_blur() > 0.0f) {
layer->SetLayerBlur(0.0f);
} else {
layer->SetLayerBlur(login_constants::kBlurSigma);
}
}
}
LoginDataDispatcher* LockScreen::data_dispatcher() {
return window_->data_dispatcher();
}
void LockScreen::OnLockScreenNoteStateChanged(mojom::TrayActionState state) {
if (data_dispatcher())
data_dispatcher()->SetLockScreenNoteState(state);
}
void LockScreen::OnSessionStateChanged(session_manager::SessionState state) {
if (type_ == ScreenType::kLogin &&
state == session_manager::SessionState::ACTIVE) {
Destroy();
}
}
void LockScreen::OnLockStateChanged(bool locked) {
if (type_ != ScreenType::kLock)
return;
if (!locked)
Destroy();
Shell::Get()->metrics()->login_metrics_recorder()->Reset();
}
} // namespace ash