/*
    SPDX-FileCopyrightText: 2016 Eike Hein <hein@kde.org>

    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
*/

#pragma once

#include <memory>

#include "abstractwindowtasksmodel.h"

#include "taskmanager_export.h"

namespace KWayland
{
namespace Client
{
class PlasmaWindowManagement;
class Surface;
}

}

namespace TaskManager
{
/**
 * @short A tasks model for Wayland windows.
 *
 * This model presents tasks sourced from window data on the Wayland
 * server the host process is connected to.
 *
 * FIXME: Filtering by window type still needed.
 *
 * @see WindowTasksModel
 *
 * @author Eike Hein <hein@kde.org>
 */

class TASKMANAGER_EXPORT WaylandTasksModel : public AbstractWindowTasksModel
{
    Q_OBJECT

public:
    explicit WaylandTasksModel(QObject *parent = nullptr);
    ~WaylandTasksModel() override;

    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
    int rowCount(const QModelIndex &parent = QModelIndex()) const override;

    QModelIndex index(int row, int column = 0, const QModelIndex &parent = QModelIndex()) const override;

    /**
     * Request activation of the window at the given index.
     *
     * FIXME: Lacks transient handling of X Windows version.
     *
     * @param index An index in this window tasks model.
     **/
    void requestActivate(const QModelIndex &index) override;

    /**
     * Request an additional instance of the application owning the window
     * at the given index. Success depends on whether a
     * AbstractTasksModel::LauncherUrl could be derived from window metadata.
     *
     * @param index An index in this window tasks model.
     **/
    void requestNewInstance(const QModelIndex &index) override;

    /**
     * Runs the application backing the launcher at the given index with the given URLs.
     * Success depends on whether a AbstractTasksModel::LauncherUrl could be
     * derived from window metadata and a KService could be found from that.
     *
     * @param index An index in this launcher tasks model
     * @param urls The URLs to be passed to the application
     */
    void requestOpenUrls(const QModelIndex &index, const QList<QUrl> &urls) override;

    /**
     * Request the window at the given index be closed.
     *
     * @param index An index in this window tasks model.
     **/
    void requestClose(const QModelIndex &index) override;

    /**
     * Request starting an interactive move for the window at the given index.
     *
     * FIXME: X Windows version has extra virtual desktop logic.
     *
     * @param index An index in this window tasks model.
     **/
    void requestMove(const QModelIndex &index) override;

    /**
     * Request starting an interactive move for the window at the given index.
     *
     * FIXME: X Windows version has extra virtual desktop logic.
     *
     * @param index An index in this window tasks model.
     **/
    void requestResize(const QModelIndex &index) override;

    /**
     * Request toggling the minimized state of the window at the given index.
     *
     * FIXME: X Windows version has extra virtual desktop logic.
     *
     * @param index An index in this window tasks model.
     **/
    void requestToggleMinimized(const QModelIndex &index) override;

    /**
     * Request toggling the maximized state of the task at the given index.
     *
     * FIXME: X Windows version has extra virtual desktop logic.
     *
     * @param index An index in this window tasks model.
     **/
    void requestToggleMaximized(const QModelIndex &index) override;

    /**
     * Request toggling the keep-above state of the task at the given index.
     *
     * @param index An index in this window tasks model.
     **/
    void requestToggleKeepAbove(const QModelIndex &index) override;

    /**
     * Request toggling the keep-below state of the task at the given index.
     *
     * @param index An index in this window tasks model.
     **/
    void requestToggleKeepBelow(const QModelIndex &index) override;

    /**
     * Request toggling the fullscreen state of the task at the given index.
     *
     * @param index An index in this window tasks model.
     **/
    void requestToggleFullScreen(const QModelIndex &index) override;

    /**
     * Request toggling the shaded state of the task at the given index.
     *
     * @param index An index in this window tasks model.
     **/
    void requestToggleShaded(const QModelIndex &index) override;

    /**
     * Request entering the window at the given index on the specified virtual desktops,
     * leaving any other desktops.
     *
     * Virtual desktop ids are QStrings.
     *
     * An empty list has a special meaning: The window is entered on all virtual desktops
     * in the session.
     *
     * @param index An index in this window tasks model.
     * @param desktops A list of virtual desktop ids.
     **/
    void requestVirtualDesktops(const QModelIndex &index, const QVariantList &desktops) override;

    /**
     * Request entering the window at the given index on a new virtual desktop,
     * which is created in response to this request.
     *
     * @param index An index in this window tasks model.
     **/
    void requestNewVirtualDesktop(const QModelIndex &index) override;

    /**
     * Request moving the window at the given index to the specified activities
     *
     * FIXME: This currently does nothing as activities is not implemented in kwin/kwayland
     *
     * @param index An index in this window tasks model.
     * @param desktop A virtual desktop number.
     **/
    void requestActivities(const QModelIndex &index, const QStringList &activities) override;

    /**
     * Request informing the window manager of new geometry for a visual
     * delegate for the window at the given index. The geometry is retrieved
     * from the delegate object passed. Right now, QQuickItem is the only
     * supported delegate object type.
     *
     * FIXME: This introduces the dependency on Qt::Quick. I might prefer
     * reversing this and publishing the window pointer through the model,
     * then calling PlasmaWindow::setMinimizeGeometry in the applet backend,
     * rather than hand delegate items into the lib, keeping the lib more UI-
     * agnostic.
     *
     * @param index An index in this window tasks model.
     * @param geometry Visual delegate geometry in screen coordinates. Unused
     * in this implementation.
     * @param delegate The delegate. This implementation will attempt to cast
     * it to QQuickItem, map its coordinates to its window and find the Wayland
     * Surface for the window.
     **/
    void requestPublishDelegateGeometry(const QModelIndex &index, const QRect &geometry, QObject *delegate = nullptr) override;

    /**
     * Tries to extract a process-internal Wayland window id from supplied mime data.
     *
     * @param mimeData Some mime data.
     * @param @ok Set to true or false on success or failure.
     */
    static QUuid winIdFromMimeData(const QMimeData *mimeData, bool *ok = nullptr);

    /**
     * Tries to extract process-internal Wayland window ids from supplied mime data.
     *
     * @param mimeData Some mime data.
     * @param @ok Set to true or false on success or failure.
     */
    static QList<QUuid> winIdsFromMimeData(const QMimeData *mimeData, bool *ok = nullptr);

private:
    class Private;
    std::unique_ptr<Private> d;
};

}