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ash / bubble / bubble_event_filter.h [blame]
// 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_BUBBLE_BUBBLE_EVENT_FILTER_H_
#define ASH_BUBBLE_BUBBLE_EVENT_FILTER_H_
#include "ash/ash_export.h"
#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "ui/events/event_handler.h"
namespace ui {
class LocatedEvent;
} // namespace ui
namespace views {
class View;
class Widget;
} // namespace views
namespace ash {
// Observes mouse and touch events and invokes a callback when
// `ShouldRunOnClickOutsideCallback()` is satisfied. For example, this class
// can be used to close the bubble according to an appropriate event.
class ASH_EXPORT BubbleEventFilter : public ui::EventHandler {
public:
using OnClickedOutsideCallback =
base::RepeatingCallback<void(const ui::LocatedEvent&)>;
// See class comment. Runs `on_click_outside` when a click or tap occurs
// outside the bounds of `bubble_widget` and `button`.
BubbleEventFilter(views::Widget* bubble_widget,
views::View* button,
OnClickedOutsideCallback on_click_outside);
BubbleEventFilter(const BubbleEventFilter&) = delete;
BubbleEventFilter& operator=(const BubbleEventFilter&) = delete;
~BubbleEventFilter() override;
// Changes the button to be checked in `ShouldRunOnClickOutsideCallback()`.
// This will be used for the app list bubble where the app list has changed
// displays, so a different home button needs to be checked.
void SetButton(views::View* button);
// ui::EventHandler:
void OnMouseEvent(ui::MouseEvent* event) override;
void OnTouchEvent(ui::TouchEvent* event) override;
protected:
// Checks whether we should run `on_click_outside_` or not.
virtual bool ShouldRunOnClickOutsideCallback(const ui::LocatedEvent& event);
void ProcessPressedEvent(const ui::LocatedEvent& event);
private:
const raw_ptr<views::Widget> bubble_widget_;
raw_ptr<views::View, DanglingUntriaged> button_; // May be null.
OnClickedOutsideCallback on_click_outside_;
};
} // namespace ash
#endif // ASH_BUBBLE_BUBBLE_EVENT_FILTER_H_