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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_CAPTION_BUTTON_CONTAINER_WIN_H_
#define CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_CAPTION_BUTTON_CONTAINER_WIN_H_
#include "base/memory/raw_ptr.h"
#include "base/scoped_observation.h"
#include "ui/base/metadata/metadata_header_macros.h"
#include "ui/base/pointer/touch_ui_controller.h"
#include "ui/views/controls/button/button.h"
#include "ui/views/view.h"
#include "ui/views/widget/widget.h"
#include "ui/views/widget/widget_observer.h"
class BrowserFrameViewWin;
class WindowsCaptionButton;
// Provides a container for Windows caption buttons that can be moved between
// frame and browser window as needed. When extended horizontally, becomes a
// grab bar for moving the window.
class BrowserCaptionButtonContainer : public views::View,
public views::WidgetObserver {
METADATA_HEADER(BrowserCaptionButtonContainer, views::View)
public:
explicit BrowserCaptionButtonContainer(BrowserFrameViewWin* frame_view);
~BrowserCaptionButtonContainer() override;
// Tests to see if the specified |point| (which is expressed in this view's
// coordinates and which must be within this view's bounds) is within one of
// the caption buttons. Returns one of HitTestCompat enum defined in
// ui/base/hit_test.h, HTCAPTION if the area hit would be part of the window's
// drag handle, and HTNOWHERE otherwise.
// See also ClientView::NonClientHitTest.
int NonClientHitTest(const gfx::Point& point) const;
void OnWindowControlsOverlayEnabledChanged();
private:
friend class BrowserFrameViewWin;
// views::View:
void AddedToWidget() override;
void RemovedFromWidget() override;
void OnThemeChanged() override;
// views::WidgetObserver:
void OnWidgetBoundsChanged(views::Widget* widget,
const gfx::Rect& new_bounds) override;
void ResetWindowControls();
// Sets caption button visibility and enabled state based on window state.
// Only one of maximize or restore button should ever be visible at the same
// time, and both are disabled in tablet UI mode.
void UpdateButtons();
// Sets caption button's accessible name as its tooltip when it's in a PWA
// with window-controls-overlay display override and resets it otherwise. In
// this mode, the web contents covers the frame view and so does it's legacy
// hwnd which prevent tooltips being shown for the caption buttons.
void UpdateButtonToolTipsForWindowControlsOverlay();
const raw_ptr<BrowserFrameViewWin> frame_view_;
const raw_ptr<WindowsCaptionButton> minimize_button_;
const raw_ptr<WindowsCaptionButton> maximize_button_;
const raw_ptr<WindowsCaptionButton> restore_button_;
const raw_ptr<WindowsCaptionButton> close_button_;
base::ScopedObservation<views::Widget, views::WidgetObserver>
widget_observation_{this};
base::CallbackListSubscription subscription_ =
ui::TouchUiController::Get()->RegisterCallback(
base::BindRepeating(&BrowserCaptionButtonContainer::UpdateButtons,
base::Unretained(this)));
};
#endif // CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_CAPTION_BUTTON_CONTAINER_WIN_H_
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