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// Copyright 2016 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_THEME_COPYING_WIDGET_H_
#define CHROME_BROWSER_UI_VIEWS_THEME_COPYING_WIDGET_H_
#include "base/memory/raw_ptr.h"
#include "base/scoped_observation.h"
#include "ui/views/widget/widget.h"
#include "ui/views/widget/widget_observer.h"
// This widget uses a reference widget to provide its NativeTheme and
// ThemeProvider.
class ThemeCopyingWidget : public views::Widget, public views::WidgetObserver {
public:
explicit ThemeCopyingWidget(views::Widget* role_model);
ThemeCopyingWidget(const ThemeCopyingWidget&) = delete;
ThemeCopyingWidget& operator=(const ThemeCopyingWidget&) = delete;
~ThemeCopyingWidget() override;
// views::Widget:
const ui::ThemeProvider* GetThemeProvider() const override;
ui::ColorProviderKey::ThemeInitializerSupplier* GetCustomTheme()
const override;
const ui::NativeTheme* GetNativeTheme() const override;
// views::WidgetObserver:
void OnWidgetDestroying(Widget* widget) override;
void OnWidgetThemeChanged(Widget* widget) override;
private:
// The widget we'll copy our theme from.
raw_ptr<views::Widget> role_model_;
base::ScopedObservation<views::Widget, views::WidgetObserver>
observed_widget_{this};
};
#endif // CHROME_BROWSER_UI_VIEWS_THEME_COPYING_WIDGET_H_
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