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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ASH_SYSTEM_OVERVIEW_OVERVIEW_BUTTON_TRAY_H_
#define ASH_SYSTEM_OVERVIEW_OVERVIEW_BUTTON_TRAY_H_
#include "ash/ash_export.h"
#include "ash/public/cpp/session/session_observer.h"
#include "ash/public/cpp/shelf_config.h"
#include "ash/public/cpp/tablet_mode_observer.h"
#include "ash/shelf/shelf.h"
#include "ash/system/tray/tray_background_view.h"
#include "ash/wm/overview/overview_observer.h"
#include "base/memory/raw_ptr.h"
#include "base/time/time.h"
#include "ui/base/metadata/metadata_header_macros.h"
#include "ui/events/event_constants.h"
namespace ui {
class Event;
class GestureEvent;
} // namespace ui
namespace views {
class ImageView;
}
namespace ash {
// Status area tray for showing a toggle for Overview Mode. Overview Mode
// is equivalent to OverviewController being in selection mode.
// This hosts a ShellObserver that listens for the activation of Maximize Mode
// This tray will only be visible while in this state. This tray does not
// provide any bubble view windows.
class ASH_EXPORT OverviewButtonTray : public TrayBackgroundView,
public SessionObserver,
public OverviewObserver,
public TabletModeObserver,
public ShelfConfig::Observer {
METADATA_HEADER(OverviewButtonTray, TrayBackgroundView)
public:
// Second taps within this time will be counted as double taps. Use this
// instead of ui::Event's click_count and tap_count as those have a minimum
// time bewtween events before the second tap counts as a double tap.
// TODO(crbug.com/40565331): We should the gesture detector double tap time or
// overview enter animation time, once ux decides which one to match (both are
// 300ms currently).
static constexpr base::TimeDelta kDoubleTapThresholdMs =
base::Milliseconds(300);
explicit OverviewButtonTray(Shelf* shelf);
OverviewButtonTray(const OverviewButtonTray&) = delete;
OverviewButtonTray& operator=(const OverviewButtonTray&) = delete;
~OverviewButtonTray() override;
// Sets the ink drop ripple to ACTIVATED immediately with no animations.
void SnapRippleToActivated();
// views::Button:
void OnGestureEvent(ui::GestureEvent* event) override;
// SessionObserver:
void OnSessionStateChanged(session_manager::SessionState state) override;
// OverviewObserver:
void OnOverviewModeStarting() override;
void OnOverviewModeEnded() override;
// TabletModeObserver:
void OnTabletModeEventsBlockingChanged() override;
// ShelfConfigObserver:
void OnShelfConfigUpdated() override;
// TrayBackgroundView:
void UpdateAfterLoginStatusChange() override;
void ClickedOutsideBubble(const ui::LocatedEvent& event) override;
void UpdateTrayItemColor(bool is_active) override;
void HandleLocaleChange() override;
void HideBubbleWithView(const TrayBubbleView* bubble_view) override;
void OnThemeChanged() override;
void HideBubble(const TrayBubbleView* bubble_view) override;
private:
friend class OverviewButtonTrayTest;
// Callback called when this is pressed. Long press is reacted to in
// `OnGestureEvent()`, see crbug/1374368.
void OnButtonPressed(const ui::Event& event);
void UpdateIconVisibility();
// Gets the icon image of `icon_`.
gfx::ImageSkia GetIconImage();
// Weak pointer, will be parented by TrayContainer for its lifetime.
raw_ptr<views::ImageView> icon_;
ScopedSessionObserver scoped_session_observer_;
// Stores the timestamp of the last tap event time that happened while not
// in overview mode. Used to check for double taps, which invoke quick switch.
std::optional<base::TimeTicks> last_press_event_time_;
};
} // namespace ash
#endif // ASH_SYSTEM_OVERVIEW_OVERVIEW_BUTTON_TRAY_H_
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