/*
    KWin - the KDE window manager
    This file is part of the KDE project.

    SPDX-FileCopyrightText: 2009, 2011 Martin Gräßlin <mgraesslin@kde.org>

    SPDX-License-Identifier: GPL-2.0-or-later
*/
#pragma once

#include <QAbstractListModel>
#include <QQuickView>
#include <QRect>

#include "thumbnailitem.h"

namespace KWin
{

namespace TabBox
{

class SwitcherItem;

class LayoutPreview : public QObject
{
    Q_OBJECT
public:
    explicit LayoutPreview(const QString &path, bool showDesktopThumbnail = false, QObject *parent = nullptr);
    ~LayoutPreview() override;

    bool eventFilter(QObject *object, QEvent *event) override;

private:
    SwitcherItem *m_item;
};

class ExampleClientModel : public QAbstractListModel
{
    Q_OBJECT
public:
    enum {
        CaptionRole = Qt::UserRole + 1,
        MinimizedRole,
        DesktopNameRole,
        IconRole,
        WindowIdRole,
        CloseableRole,
    };

    explicit ExampleClientModel(QObject *parent = nullptr);
    ~ExampleClientModel() override;

    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
    int rowCount(const QModelIndex &parent = QModelIndex()) const override;
    QHash<int, QByteArray> roleNames() const override;
    Q_INVOKABLE QString longestCaption() const;

    void showDesktopThumbnail(bool showDesktop);

private:
    struct ThumbnailInfo
    {
        WindowThumbnailItem::Thumbnail wId;
        QString caption;
        QString icon;

        bool operator==(const ThumbnailInfo &other) const
        {
            return wId == other.wId;
        }
    };

    void init();
    QList<ThumbnailInfo> m_thumbnails;
};

class SwitcherItem : public QObject
{
    Q_OBJECT
    Q_PROPERTY(QAbstractItemModel *model READ model NOTIFY modelChanged)
    Q_PROPERTY(QRect screenGeometry READ screenGeometry NOTIFY screenGeometryChanged)
    Q_PROPERTY(bool visible READ isVisible NOTIFY visibleChanged)
    Q_PROPERTY(bool allDesktops READ isAllDesktops NOTIFY allDesktopsChanged)
    Q_PROPERTY(int currentIndex READ currentIndex WRITE setCurrentIndex NOTIFY currentIndexChanged)

    /**
     * The main QML item that will be displayed in the Dialog
     */
    Q_PROPERTY(QObject *item READ item WRITE setItem NOTIFY itemChanged)

    Q_CLASSINFO("DefaultProperty", "item")
public:
    SwitcherItem(QObject *parent = nullptr);
    ~SwitcherItem() override;

    QAbstractItemModel *model() const;
    QRect screenGeometry() const;
    bool isVisible() const;
    bool isAllDesktops() const;
    int currentIndex() const;
    void setCurrentIndex(int index);
    QObject *item() const;
    void setItem(QObject *item);

    void setVisible(bool visible);
    void incrementIndex();
    void decrementIndex();

Q_SIGNALS:
    void visibleChanged();
    void currentIndexChanged(int index);
    void modelChanged();
    void allDesktopsChanged();
    void screenGeometryChanged();
    void itemChanged();

    void aboutToShow();
    void aboutToHide();

private:
    QAbstractItemModel *m_model;
    QObject *m_item;
    int m_currentIndex;
    bool m_visible;
};

inline QAbstractItemModel *SwitcherItem::model() const
{
    return m_model;
}

inline bool SwitcherItem::isVisible() const
{
    return m_visible;
}

inline bool SwitcherItem::isAllDesktops() const
{
    return true;
}

inline int SwitcherItem::currentIndex() const
{
    return m_currentIndex;
}

inline QObject *SwitcherItem::item() const
{
    return m_item;
}

class DesktopBackground : public WindowThumbnailItem
{
    Q_OBJECT
    Q_PROPERTY(QVariant activity MEMBER m_activity)
    Q_PROPERTY(QVariant desktop MEMBER m_desktop)
    Q_PROPERTY(QString outputName MEMBER m_outputName)

public:
    DesktopBackground(QQuickItem *parent = nullptr);

private Q_SLOTS:
    void stretchToScreen();

private:
    // Just for mock-up purposes.
    QVariant m_activity;
    QVariant m_desktop;
    QString m_outputName;
};

} // namespace TabBox
} // namespace KWin