// Copyright (C) 2020 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#pragma once

#include "abstractcustomtool.h"
#include "selectionindicator.h"

#include <QGraphicsLineItem>
#include <QHash>
#include <QPointer>

#include <memory>

namespace QmlDesigner {

class TransitionTool : public QObject, public AbstractCustomTool
{
    Q_OBJECT
public:
    TransitionTool();
    ~TransitionTool();

    void mousePressEvent(const QList<QGraphicsItem*> &itemList,
                         QGraphicsSceneMouseEvent *event) override;
    void mouseMoveEvent(const QList<QGraphicsItem*> &itemList,
                        QGraphicsSceneMouseEvent *event) override;
    void mouseReleaseEvent(const QList<QGraphicsItem*> &itemList,
                           QGraphicsSceneMouseEvent *event) override;
    void mouseDoubleClickEvent(const QList<QGraphicsItem*> &itemList,
                               QGraphicsSceneMouseEvent *event) override;
    void hoverMoveEvent(const QList<QGraphicsItem*> &itemList,
                        QGraphicsSceneMouseEvent *event) override;
    void keyPressEvent(QKeyEvent *event) override;
    void keyReleaseEvent(QKeyEvent *keyEvent) override;

    void dragLeaveEvent(const QList<QGraphicsItem*> &itemList,
                        QGraphicsSceneDragDropEvent * event) override;
    void dragMoveEvent(const QList<QGraphicsItem*> &itemList,
                       QGraphicsSceneDragDropEvent * event) override;

    void itemsAboutToRemoved(const QList<FormEditorItem*> &itemList) override;

    void selectedItemsChanged(const QList<FormEditorItem*> &itemList) override;

    void instancesCompleted(const QList<FormEditorItem*> &itemList) override;
    void instancesParentChanged(const QList<FormEditorItem *> &itemList) override;
    void instancePropertyChange(const QList<QPair<ModelNode, PropertyName> > &propertyList) override;

    void clear() override;

    void formEditorItemsChanged(const QList<FormEditorItem*> &itemList) override;

    int wantHandleItem(const ModelNode &modelNode) const override;

    QString name() const override;

    void activateTool();
    void unblock();

    QGraphicsLineItem *lineItem();
    QGraphicsRectItem *rectangleItem1();
    QGraphicsRectItem *rectangleItem2();

private:
    FormEditorItem *currentFormEditorItem() const;
    void createItems();
    void createTransition(FormEditorItem *item1, FormEditorItem *item2);

    FormEditorItem* m_formEditorItem;
    std::unique_ptr<QGraphicsLineItem> m_lineItem;
    std::unique_ptr<QGraphicsRectItem> m_rectangleItem1;
    std::unique_ptr<QGraphicsRectItem> m_rectangleItem2;
    bool m_blockEvents = true;
};

} //QmlDesigner