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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ash/accelerators/exit_warning_handler.h"
#include <memory>
#include "ash/accelerators/accelerator_lookup.h"
#include "ash/public/cpp/accelerator_actions.h"
#include "ash/public/cpp/shell_window_ids.h"
#include "ash/session/session_controller_impl.h"
#include "ash/shell.h"
#include "ash/strings/grit/ash_strings.h"
#include "base/metrics/user_metrics.h"
#include "base/strings/utf_string_conversions.h"
#include "base/time/time.h"
#include "base/timer/timer.h"
#include "ui/accessibility/ax_enums.mojom.h"
#include "ui/accessibility/ax_node_data.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/font_list.h"
#include "ui/gfx/text_utils.h"
#include "ui/views/accessibility/view_accessibility.h"
#include "ui/views/controls/label.h"
#include "ui/views/layout/fill_layout.h"
#include "ui/views/view.h"
#include "ui/views/widget/widget.h"
#include "ui/views/widget/widget_delegate.h"
namespace ash {
namespace {
using AcceleratorDetails = AcceleratorLookup::AcceleratorDetails;
const int64_t kTimeOutMilliseconds = 2000;
// Color of the text of the warning message.
const SkColor kTextColor = SK_ColorWHITE;
// Color of the window background.
const SkColor kWindowBackgroundColor = SkColorSetARGB(0xC0, 0x0, 0x0, 0x0);
// Radius of the rounded corners of the window.
const int kWindowCornerRadius = 2;
const int kHorizontalMarginAroundText = 100;
const int kVerticalMarginAroundText = 100;
} // namespace
class ExitWarningWidgetDelegateView : public views::WidgetDelegateView {
public:
ExitWarningWidgetDelegateView() : text_width_(0) {
std::vector<AcceleratorDetails> accelerators =
Shell::Get()->accelerator_lookup()->GetAvailableAcceleratorsForAction(
AcceleratorAction::kExit);
CHECK(!accelerators.empty());
// TODO(jimmyxgong): For now fetch the first accelerator of the list. But
// maybe there's a possibility to check which accelerator was most recently
// pressed.
text_ = l10n_util::GetStringFUTF16(
IDS_ASH_SIGN_OUT_WARNING_POPUP_TEXT_DYNAMIC,
AcceleratorLookup::GetAcceleratorDetailsText(accelerators[0]));
ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
const gfx::FontList& font_list =
rb.GetFontList(ui::ResourceBundle::LargeFont);
text_width_ = gfx::GetStringWidth(text_, font_list);
SetPreferredSize(
gfx::Size(text_width_ + kHorizontalMarginAroundText,
font_list.GetHeight() + kVerticalMarginAroundText));
auto label = std::make_unique<views::Label>();
label->SetText(text_);
label->SetHorizontalAlignment(gfx::ALIGN_CENTER);
label->SetFontList(font_list);
label->SetEnabledColor(kTextColor);
label->SetAutoColorReadabilityEnabled(false);
label->SetSubpixelRenderingEnabled(false);
AddChildView(std::move(label));
SetLayoutManager(std::make_unique<views::FillLayout>());
GetViewAccessibility().SetRole(ax::mojom::Role::kAlert);
GetViewAccessibility().SetName(l10n_util::GetStringUTF16(
IDS_ASH_SIGN_OUT_WARNING_POPUP_TEXT_ACCESSIBLE));
}
ExitWarningWidgetDelegateView(const ExitWarningWidgetDelegateView&) = delete;
ExitWarningWidgetDelegateView& operator=(
const ExitWarningWidgetDelegateView&) = delete;
void OnPaint(gfx::Canvas* canvas) override {
cc::PaintFlags flags;
flags.setStyle(cc::PaintFlags::kFill_Style);
flags.setColor(kWindowBackgroundColor);
canvas->DrawRoundRect(GetLocalBounds(), kWindowCornerRadius, flags);
views::WidgetDelegateView::OnPaint(canvas);
}
private:
std::u16string text_;
int text_width_;
};
ExitWarningHandler::ExitWarningHandler()
: state_(IDLE), stub_timer_for_test_(false) {}
ExitWarningHandler::~ExitWarningHandler() {
// Note: If a timer is outstanding, it is stopped in its destructor.
Hide();
}
void ExitWarningHandler::HandleAccelerator() {
switch (state_) {
case IDLE:
state_ = WAIT_FOR_DOUBLE_PRESS;
Show();
StartTimer();
base::RecordAction(base::UserMetricsAction("Accel_Exit_First_Q"));
break;
case WAIT_FOR_DOUBLE_PRESS:
state_ = EXITING;
CancelTimer();
Hide();
base::RecordAction(base::UserMetricsAction("Accel_Exit_Second_Q"));
Shell::Get()->session_controller()->RequestSignOut();
break;
case EXITING:
break;
}
}
void ExitWarningHandler::TimerAction() {
Hide();
if (state_ == WAIT_FOR_DOUBLE_PRESS)
state_ = IDLE;
}
void ExitWarningHandler::StartTimer() {
if (stub_timer_for_test_)
return;
timer_.Start(FROM_HERE, base::Milliseconds(kTimeOutMilliseconds), this,
&ExitWarningHandler::TimerAction);
}
void ExitWarningHandler::CancelTimer() {
timer_.Stop();
}
void ExitWarningHandler::Show() {
if (widget_)
return;
aura::Window* root_window = Shell::GetRootWindowForNewWindows();
ExitWarningWidgetDelegateView* delegate = new ExitWarningWidgetDelegateView;
gfx::Size rs = root_window->bounds().size();
gfx::Size ps = delegate->GetPreferredSize();
gfx::Rect bounds((rs.width() - ps.width()) / 2,
(rs.height() - ps.height()) / 3, ps.width(), ps.height());
views::Widget::InitParams params(
views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET,
views::Widget::InitParams::TYPE_POPUP);
params.opacity = views::Widget::InitParams::WindowOpacity::kTranslucent;
params.accept_events = false;
params.z_order = ui::ZOrderLevel::kFloatingUIElement;
params.delegate = delegate;
params.bounds = bounds;
params.name = "ExitWarningWindow";
params.parent =
root_window->GetChildById(kShellWindowId_SettingBubbleContainer);
widget_ = std::make_unique<views::Widget>();
widget_->Init(std::move(params));
widget_->Show();
delegate->NotifyAccessibilityEventDeprecated(ax::mojom::Event::kAlert, true);
}
void ExitWarningHandler::Hide() {
widget_.reset();
}
} // namespace ash
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