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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 "athena/system/public/system_ui.h"
#include "athena/screen/public/screen_manager.h"
#include "athena/system/background_controller.h"
#include "athena/system/orientation_controller.h"
#include "athena/system/shutdown_dialog.h"
#include "athena/system/status_icon_container_view.h"
#include "athena/system/time_view.h"
#include "athena/util/container_priorities.h"
#include "athena/util/fill_layout_manager.h"
#include "base/logging.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "ui/aura/window.h"
#include "ui/views/view.h"
namespace athena {
namespace {
SystemUI* instance = NULL;
// View which positions the TimeView on the left and the StatusIconView on the
// right.
class SystemInfoView : public views::View {
public:
SystemInfoView(SystemUI::ColorScheme color_scheme,
aura::Window* system_modal_container)
: time_view_(new TimeView(color_scheme)),
status_icon_view_(
new StatusIconContainerView(color_scheme, system_modal_container)) {
AddChildView(time_view_);
AddChildView(status_icon_view_);
}
virtual ~SystemInfoView() {
}
// views::View:
virtual gfx::Size GetPreferredSize() const override {
// The view should be as wide as its parent view.
return gfx::Size(0,
std::max(time_view_->GetPreferredSize().height(),
status_icon_view_->GetPreferredSize().height()));
}
virtual void Layout() override {
time_view_->SetBoundsRect(gfx::Rect(time_view_->GetPreferredSize()));
gfx::Size status_icon_preferred_size =
status_icon_view_->GetPreferredSize();
status_icon_view_->SetBoundsRect(
gfx::Rect(width() - status_icon_preferred_size.width(),
0,
status_icon_preferred_size.width(),
status_icon_preferred_size.height()));
}
virtual void ChildPreferredSizeChanged(views::View* child) override {
// Relayout to take into account changes in |status_icon_view_|'s width.
// Assume that |time_view_|'s and |status_icon_view_|'s preferred height
// does not change.
Layout();
}
private:
views::View* time_view_;
views::View* status_icon_view_;
DISALLOW_COPY_AND_ASSIGN(SystemInfoView);
};
class SystemUIImpl : public SystemUI {
public:
SystemUIImpl(scoped_refptr<base::TaskRunner> blocking_task_runner)
: orientation_controller_(new OrientationController()),
background_container_(NULL),
system_modal_container_(NULL) {
orientation_controller_->InitWith(blocking_task_runner);
}
virtual ~SystemUIImpl() {
// Stops file watching now if exists. Waiting until message loop shutdon
// leads to FilePathWatcher crash.
orientation_controller_->Shutdown();
}
void Init() {
ScreenManager* screen_manager = ScreenManager::Get();
background_container_ = screen_manager->CreateContainer(
ScreenManager::ContainerParams("AthenaBackground", CP_BACKGROUND));
background_container_->SetLayoutManager(
new FillLayoutManager(background_container_));
ScreenManager::ContainerParams system_modal_params(
"AthenaSystemModalContainer", CP_SYSTEM_MODAL);
system_modal_params.can_activate_children = true;
system_modal_container_ =
screen_manager->CreateContainer(system_modal_params);
login_screen_system_modal_container_ = screen_manager->CreateContainer(
ScreenManager::ContainerParams("AthenaLoginScreenSystemModalContainer",
CP_LOGIN_SCREEN_SYSTEM_MODAL));
// Use |login_screen_system_modal_container_| for the power button's dialog
// because it needs to show over the login screen.
// TODO(pkotwicz): Pick the most appropriate container based on whether the
// user has logged in.
shutdown_dialog_.reset(
new ShutdownDialog(login_screen_system_modal_container_));
background_controller_.reset(
new BackgroundController(background_container_));
}
virtual void SetBackgroundImage(const gfx::ImageSkia& image) override {
background_controller_->SetImage(image);
}
virtual views::View* CreateSystemInfoView(ColorScheme color_scheme) override {
return new SystemInfoView(color_scheme, system_modal_container_);
}
private:
scoped_ptr<OrientationController> orientation_controller_;
scoped_ptr<ShutdownDialog> shutdown_dialog_;
scoped_ptr<BackgroundController> background_controller_;
// The parent container for the background.
aura::Window* background_container_;
// The parent container used by system modal dialogs.
aura::Window* system_modal_container_;
// The parent container used by system modal dialogs when the login screen is
// visible.
aura::Window* login_screen_system_modal_container_;
DISALLOW_COPY_AND_ASSIGN(SystemUIImpl);
};
} // namespace
// static
SystemUI* SystemUI::Create(
scoped_refptr<base::TaskRunner> blocking_task_runner) {
SystemUIImpl* system_ui = new SystemUIImpl(blocking_task_runner);
instance = system_ui;
system_ui->Init();
return instance;
}
// static
SystemUI* SystemUI::Get() {
DCHECK(instance);
return instance;
}
// static
void SystemUI::Shutdown() {
CHECK(instance);
delete instance;
instance = NULL;
}
} // namespace athena
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