/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
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** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
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** information use the contact form at https://www.qt.io/contact-us.
**
** 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
** information to ensure the GNU General Public License requirements will
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****************************************************************************/

#pragma once

#include "qmljseditor_global.h"

#include <QMutex>
#include <QObject>
#include <QFuture>
#include <QFutureWatcher>
#include <QPointer>

QT_FORWARD_DECLARE_CLASS(QTimer)

namespace Core {
class SearchResultItem;
class SearchResult;
} // namespace Core

namespace QmlJSEditor {

class QMLJSEDITOR_EXPORT FindReferences: public QObject
{
    Q_OBJECT
public:
    class Usage
    {
    public:
        Usage(const QString &path, const QString &lineText, int line, int col, int len)
            : path(path), lineText(lineText), line(line), col(col), len(len) {}

    public:
        QString path;
        QString lineText;
        int line = 0;
        int col = 0;
        int len = 0;
    };

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

signals:
    void changed();

public:
    void findUsages(const QString &fileName, quint32 offset);
    void renameUsages(const QString &fileName, quint32 offset,
                      const QString &replacement = QString());

    static QList<Usage> findUsageOfType(const QString &fileName, const QString &typeName);

private:
    void displayResults(int first, int last);
    void searchFinished();
    void cancel();
    void setPaused(bool paused);
    void onReplaceButtonClicked(const QString &text, const QList<Core::SearchResultItem> &items, bool preserveCase);

    QPointer<Core::SearchResult> m_currentSearch;
    QFutureWatcher<Usage> m_watcher;
};

} // namespace QmlJSEditor