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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** 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
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** 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
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/

#pragma once

#include "qtsupport_global.h"
#include "baseqtversion.h"

namespace QtSupport {

class QTSUPPORT_EXPORT QtVersionManager : public QObject
{
    Q_OBJECT
    // for getUniqueId();
    friend class BaseQtVersion;
    friend class QtVersionFactory;
    friend class Internal::QtOptionsPageWidget;

public:
    static QtVersionManager *instance();
    QtVersionManager();
    ~QtVersionManager() override;
    static void initialized();

    static bool isLoaded();

    // This will *always* return at least one (Qt in Path), even if that is
    // unconfigured. The lists here are in load-time order! Use sortVersions(...) if you
    // need a list sorted by Qt Version number.
    //
    // Note: DO NOT STORE THESE POINTERS!
    //       The QtVersionManager may delete them at random times and you will
    //       need to get a new pointer by calling this function again!
    static QList<BaseQtVersion *> versions(const BaseQtVersion::Predicate &predicate = BaseQtVersion::Predicate());
    static BaseQtVersion *version(int id);
    static BaseQtVersion *version(const BaseQtVersion::Predicate &predicate);

    // Sorting is potentially expensive since it might require qmake --query to run for each version!
    static QList<BaseQtVersion *> sortVersions(const QList<BaseQtVersion *> &input);

    static void addVersion(BaseQtVersion *version);
    static void removeVersion(BaseQtVersion *version);

    // Call latest in extensionsInitialized of plugin depending on QtSupport
    static void registerExampleSet(const QString &displayName,
                                   const QString &manifestPath,
                                   const QString &examplesPath);

signals:
    // content of BaseQtVersion objects with qmake path might have changed
    void qtVersionsChanged(const QList<int> &addedIds, const QList<int> &removedIds, const QList<int> &changedIds);
    void qtVersionsLoaded();

private:
    enum class DocumentationSetting { HighestOnly, All, None };

    static void updateDocumentation(const QList<BaseQtVersion *> &added,
                                    const QList<BaseQtVersion *> &removed,
                                    const QList<BaseQtVersion *> &allNew);
    void updateFromInstaller(bool emitSignal = true);
    void triggerQtVersionRestore();

    // Used by QtOptionsPage
    static void setNewQtVersions(const QList<BaseQtVersion *> &newVersions);
    static void setDocumentationSetting(const DocumentationSetting &setting);
    static DocumentationSetting documentationSetting();
    // Used by QtVersion
    static int getUniqueId();
};

} // namespace QtSupport