/*
    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 "abstractwindowtasksmodel.h"

#include "taskmanager_export.h"

#include <QMimeData>
#include <qwindowdefs.h>

#include <memory>

#include <netwm.h>

namespace TaskManager
{
/**
 * @short A tasks model for X Window System windows.
 *
 * This model presents tasks sourced from window data on the X Windows
 * server the host process is connected to.
 *
 * For the purposes of presentation in a user interface and efficiency,
 * certain types of windows (e.g. utility windows, or windows that are
 * transients for an otherwise-included window) are omitted from the
 * model.
 *
 * @see WindowTasksModel
 *
 * @author Eike Hein <hein@kde.org>
 */

class TASKMANAGER_EXPORT XWindowTasksModel : public AbstractWindowTasksModel
{
    Q_OBJECT

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

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

    /**
     * Request activation of the window at the given index.
     *
     * If the window has a transient demanding attention, it will be
     * activated instead.
     *
     * If the window has a transient in shaded state, it will be
     * activated instead.
     *
     * @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.
     *
     * If the window is not currently the active window, it will be activated.
     *
     * If the window is not on the current desktop, the current desktop will
     * be set to the window's desktop.
     * FIXME: Desktop logic should maybe move into proxy.
     *
     * @param index An index in this window tasks model.
     **/
    void requestMove(const QModelIndex &index) override;

    /**
     * Request starting an interactive resize for the window at the given index.
     *
     * If the window is not currently the active window, it will be activated.
     *
     * If the window is not on the current desktop, the current desktop will
     * be set to the window's desktop.
     * FIXME: Desktop logic should maybe move into proxy.
     *
     * @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.
     *
     * If the window is not on the current desktop, the current desktop will
     * be set to the window's desktop.
     * FIXME: Desktop logic should maybe move into proxy.
     *
     * @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.
     *
     * If the window is not on the current desktop, the current desktop will
     * be set to the window's desktop.
     * FIXME: Desktop logic should maybe move into proxy.
     *
     * @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 desktop.
     * For compatibility across windowing systems the library supports, the desktops
     * parameter is a list; however, on X11 a window can only be on one or all virtual
     * desktops. Therefore, only the first list entry is actually used.
     *
     * An empty list has a special meaning: The window is entered on all virtual desktops
     * in the session.
     *
     * The id 0 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 (uint).
     **/
    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 task at the given index to the specified activities.
     *
     * This is meant for tasks that have an associated window, and may be
     * a no-op when there is no window.
     *     *
     * @param index An index in this tasks model.
     * @param activities The new list of activities.
     **/
    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.
     *
     * @param index An index in this window tasks model.
     * @param geometry Visual delegate geometry in screen coordinates.
     * @param delegate The delegate. Unused in this implementation.
     **/
    void requestPublishDelegateGeometry(const QModelIndex &index, const QRect &geometry, QObject *delegate = nullptr) override;

    /**
     * Tries to extract a X11 window id from supplied mime data.
     *
     * @param mimeData Some mime data.
     * @param @ok Set to true or false on success or failure.
     */
    static WId winIdFromMimeData(const QMimeData *mimeData, bool *ok = nullptr);

    /**
     * Tries to extract X11 window ids from supplied mime data.
     *
     * @param mimeData Some mime data.
     * @param @ok Set to true or false on success or failure.
     */
    static QList<WId> winIdsFromMimeData(const QMimeData *mimeData, bool *ok = nullptr);

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

}