/****************************************************************************
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** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
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** accordance with the commercial license agreement provided with the
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** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
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#pragma once

#include <coreplugin/inavigationwidgetfactory.h>
#include <coreplugin/opendocumentstreeview.h>

#include <QAbstractProxyModel>

namespace Core {
class IEditor;

namespace Internal {

class ProxyModel : public QAbstractProxyModel
{
    Q_OBJECT
public:
    explicit ProxyModel(QObject *parent = nullptr);
    QModelIndex mapFromSource(const QModelIndex & sourceIndex) const override;
    QModelIndex mapToSource(const QModelIndex & proxyIndex) const override;

    QModelIndex index(int row, int column, const QModelIndex &parent = QModelIndex()) const override;
    QModelIndex parent(const QModelIndex &child) const override;
    int rowCount(const QModelIndex &parent = QModelIndex()) const override;
    int columnCount(const QModelIndex &parent = QModelIndex()) const override;

    void setSourceModel(QAbstractItemModel *sourceModel) override;

    // QAbstractProxyModel::sibling is broken in Qt 5
    QModelIndex sibling(int row, int column, const QModelIndex &idx) const override;
    // QAbstractProxyModel::supportedDragActions delegation is missing in Qt 5
    Qt::DropActions supportedDragActions() const override;

private:
    void sourceDataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight);
    void sourceRowsRemoved(const QModelIndex &parent, int start, int end);
    void sourceRowsInserted(const QModelIndex &parent, int start, int end);
    void sourceRowsAboutToBeRemoved(const QModelIndex &parent, int start, int end);
    void sourceRowsAboutToBeInserted(const QModelIndex &parent, int start, int end);
};

class OpenEditorsWidget : public OpenDocumentsTreeView
{
    Q_OBJECT

public:
    OpenEditorsWidget();
    ~OpenEditorsWidget() override;

private:
    void handleActivated(const QModelIndex &);
    void updateCurrentItem(IEditor*);
    void contextMenuRequested(QPoint pos);
    void activateEditor(const QModelIndex &index);
    void closeDocument(const QModelIndex &index);

    ProxyModel *m_model;
};

class OpenEditorsViewFactory : public INavigationWidgetFactory
{
    Q_OBJECT

public:
    OpenEditorsViewFactory();

    NavigationView createWidget() override;
};

} // namespace Internal
} // namespace Core