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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 CHROME_BROWSER_UI_VIEWS_OMNIBOX_OMNIBOX_POPUP_PRESENTER_H_
#define CHROME_BROWSER_UI_VIEWS_OMNIBOX_OMNIBOX_POPUP_PRESENTER_H_
#include "chrome/browser/ui/webui/searchbox/realbox_handler.h"
#include "content/public/browser/render_frame_host.h"
#include "ui/base/metadata/metadata_header_macros.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/size.h"
#include "ui/views/controls/webview/webview.h"
#include "ui/views/view_observer.h"
#include "ui/views/widget/widget.h"
#include "ui/views/widget/widget_observer.h"
class LocationBarView;
class OmniboxController;
// An assistant class for OmniboxPopupViewWebUI, this manages a WebView and a
// Widget to present WebUI suggestions. This class is an implementation detail
// and is not expected to grow or change much with omnibox changes. The concern
// of this class is presentation only, i.e. Views and Widgets. For omnibox
// logic concerns and communication between native omnibox code and the WebUI
// code, work with OmniboxPopupViewWebUI directly.
class OmniboxPopupPresenter : public views::WebView,
public views::WidgetObserver,
public OmniboxWebUIPopupChangeObserver,
public views::ViewObserver {
METADATA_HEADER(OmniboxPopupPresenter, views::WebView)
public:
explicit OmniboxPopupPresenter(LocationBarView* location_bar_view,
OmniboxController* controller);
OmniboxPopupPresenter(const OmniboxPopupPresenter&) = delete;
OmniboxPopupPresenter& operator=(const OmniboxPopupPresenter&) = delete;
~OmniboxPopupPresenter() override;
// Show or hide the popup widget with web view.
void Show();
void Hide();
// Tells whether the popup widget exists.
bool IsShown() const;
// Get the handler for communicating with the WebUI interface.
// Returns nullptr if handler is not ready.
RealboxHandler* GetHandler();
// views::WidgetObserver:
void OnWidgetDestroyed(views::Widget* widget) override;
// RealboxWebUIChangeClient:
void OnPopupElementSizeChanged(gfx::Size size) override;
// views::ViewObserver:
void OnViewBoundsChanged(View* observed_view) override;
private:
friend class OmniboxPopupViewWebUITest;
// Tells whether the WebUI handler is loaded and ready to receive calls.
bool IsHandlerReady();
// Remove observation and reset widget, optionally requesting it to close.
void ReleaseWidget(bool close);
// The location bar view that owns owners of this and thus outlives this.
raw_ptr<LocationBarView> location_bar_view_;
// Created by this, closed by this; owned and destroyed by OS.
// TODO(crbug.com/40232479): Migrate this to CLIENT_OWNS_WIDGET.
raw_ptr<views::Widget> widget_;
// Whether any call to `GetHandler` has been made.
bool requested_handler_;
// Last reported WebUI element size.
gfx::Size webui_element_size_;
};
#endif // CHROME_BROWSER_UI_VIEWS_OMNIBOX_OMNIBOX_POPUP_PRESENTER_H_
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