/*
    SPDX-FileCopyrightText: 2017 David Edmundson <kde@davidedmundson.co.uk>

    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
*/
#ifndef KWAYLAND_SERVER_APPMENU_INTERFACE_H
#define KWAYLAND_SERVER_APPMENU_INTERFACE_H

#include "global.h"
#include "resource.h"

#include <KWayland/Server/kwaylandserver_export.h>

namespace KWayland
{
namespace Server
{

class Display;
class SurfaceInterface;
class AppMenuInterface;

/**
 * Provides the DBus service name and object path to a AppMenu DBus interface.
 *
 * This global can be used for clients to bind AppmenuInterface instances
 * and notifies when a new one is created
 * @since 5.42
 */
class KWAYLANDSERVER_EXPORT AppMenuManagerInterface : public Global
{
    Q_OBJECT
public:
    virtual ~AppMenuManagerInterface();
    /**
     * Returns any existing appMenu for a given surface
     * This returns a null pointer if no AppMenuInterface exists.
     */
    AppMenuInterface* appMenuForSurface(SurfaceInterface *);

Q_SIGNALS:
    /**
     * Emitted whenever a new AppmenuInterface is created.
     **/
    void appMenuCreated(KWayland::Server::AppMenuInterface*);

private:
    explicit AppMenuManagerInterface(Display *display, QObject *parent = nullptr);
    friend class Display;
    class Private;
    Private *d_func() const;
};

/**
 * Provides the DBus service name and object path to a AppMenu DBus interface.
 * This interface is attached to a wl_surface and provides access to where
 * the AppMenu DBus interface is registered.
 * @since 5.42
 */
class KWAYLANDSERVER_EXPORT AppMenuInterface : public Resource
{
    Q_OBJECT
public:
    /**
     * Structure containing DBus service name and path
     */
    struct InterfaceAddress {
        /** Service name of host with the AppMenu object*/
        QString serviceName;
        /** Object path of the AppMenu interface*/
        QString objectPath;
    };
    virtual ~AppMenuInterface();

    /**
     * @returns the service name and object path or empty strings if unset
     */
    InterfaceAddress address() const;

    /**
     * @returns The SurfaceInterface this AppmenuInterface references.
     **/
    SurfaceInterface *surface() const;

Q_SIGNALS:
    /**
     * Emitted when the address changes or is first received
     */
    void addressChanged(KWayland::Server::AppMenuInterface::InterfaceAddress);

private:
    explicit AppMenuInterface(AppMenuManagerInterface *parent, SurfaceInterface *s, wl_resource *parentResource);
    friend class AppMenuManagerInterface;

    class Private;
    Private *d_func() const;
};

}
}

#endif