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// Copyright 2023 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_TOAST_SYSTEM_NUDGE_VIEW_H_
#define ASH_SYSTEM_TOAST_SYSTEM_NUDGE_VIEW_H_
#include "ash/ash_export.h"
#include "base/functional/callback.h"
#include "base/functional/callback_helpers.h"
#include "base/memory/raw_ptr.h"
#include "ui/base/metadata/metadata_header_macros.h"
#include "ui/views/layout/flex_layout_view.h"
#include "ui/views/widget/widget_observer.h"
namespace views {
class ImageButton;
class ViewTracker;
class Widget;
} // namespace views
namespace gfx {
class RoundedCornersF;
} // namespace gfx
namespace ash {
struct AnchoredNudgeData;
class SystemShadow;
// The System Nudge view. (go/cros-educationalnudge-spec)
// This view supports different configurations depending on the provided
// nudge data parameters. It will always have a body text, and may have a
// leading image view, a title text, and up to two buttons placed on the bottom.
class ASH_EXPORT SystemNudgeView : public views::FlexLayoutView,
public views::WidgetObserver {
METADATA_HEADER(SystemNudgeView, views::FlexLayoutView)
public:
DECLARE_CLASS_ELEMENT_IDENTIFIER_VALUE(kBubbleIdForTesting);
DECLARE_CLASS_ELEMENT_IDENTIFIER_VALUE(kPrimaryButtonIdForTesting);
DECLARE_CLASS_ELEMENT_IDENTIFIER_VALUE(kSecondaryButtonIdForTesting);
explicit SystemNudgeView(const AnchoredNudgeData& nudge_data,
base::RepeatingCallback<void(bool)>
hover_focus_callback = base::DoNothing());
SystemNudgeView(const SystemNudgeView&) = delete;
SystemNudgeView& operator=(const SystemNudgeView&) = delete;
~SystemNudgeView() override;
// views::View:
void AddedToWidget() override;
void RemovedFromWidget() override;
void OnMouseEntered(const ui::MouseEvent& event) override;
void OnMouseExited(const ui::MouseEvent& event) override;
// views::WidgetObserver:
void OnWidgetBoundsChanged(views::Widget* widget,
const gfx::Rect& new_bounds) override;
void OnWidgetDestroying(views::Widget* widget) override;
private:
class FocusableChildrenObserver;
// Handles observed child focus state changes.
void HandleOnChildFocusStateChanged(bool focus_entered);
// Handles mouse enter/exit events to either show or hide `close_button_`.
void HandleOnMouseHovered(bool mouse_entered);
// Returns true if the nudge is mouse hovered or a child is focused.
bool IsHoveredOrChildHasFocus();
// Sets the corner radius for the nudge view, shadow and highlight border.
void SetNudgeRoundedCornerRadius(const gfx::RoundedCornersF& rounded_corners);
// Owned by the views hierarchy.
raw_ptr<views::ImageButton> close_button_ = nullptr;
std::unique_ptr<views::ViewTracker> anchor_view_tracker_;
std::unique_ptr<SystemShadow> shadow_;
// Used to determine if the nudge will draw a pointy corner.
const bool is_corner_anchored_;
// Observes focus state changes in the nudge's focusable children.
std::unique_ptr<FocusableChildrenObserver> focusable_children_observer_;
// Custom callback triggered whenever the nudge's hover state changes. It may
// be empty since it's an optional parameter set in `nudge_data`.
const base::RepeatingCallback<void(/*is_hovered=*/bool)>
hover_changed_callback_;
// Callback triggered whenever the hover or focus state changes.
const base::RepeatingCallback<void(/*is_hovered_or_has_focus=*/bool)>
hover_or_focus_changed_callback_;
};
} // namespace ash
#endif // ASH_SYSTEM_TOAST_SYSTEM_NUDGE_VIEW_H_
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