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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0+ OR GPL-3.0 WITH Qt-GPL-exception-1.0

#pragma once

#include <coreplugin/editormanager/iexternaleditor.h>
#include <utils/filepath.h>

#include <QStringList>
#include <QMap>

#include <functional>

QT_BEGIN_NAMESPACE
class QTcpSocket;
QT_END_NAMESPACE

namespace QtSupport { class QtVersion; }

namespace QmakeProjectManager {
namespace Internal {

/* Convenience parametrizable base class for Qt editors/binaries
 * Provides convenience functions that
 * try to retrieve the binary of the editor from the Qt version
 * of the project the file belongs to, falling back to path search
 * if none is found. On Mac, the "open" mechanism can be optionally be used. */

class ExternalQtEditor : public Core::IExternalEditor
{
    Q_OBJECT

public:
    // Member function pointer for a QtVersion function return a string (command)
    using CommandForQtVersion = std::function<QString(const QtSupport::QtVersion *)>;

    static ExternalQtEditor *createLinguistEditor();
    static ExternalQtEditor *createDesignerEditor();

    bool startEditor(const Utils::FilePath &filePath, QString *errorMessage) override;

    // Data required to launch the editor
    struct LaunchData {
        QString binary;
        QStringList arguments;
        Utils::FilePath workingDirectory;
    };

protected:
    ExternalQtEditor(Utils::Id id,
                     const QString &displayName,
                     const QString &mimetype,
                     const CommandForQtVersion &commandForQtVersion);

    // Try to retrieve the binary of the editor from the Qt version,
    // prepare arguments accordingly (Mac "open" if desired)
    bool getEditorLaunchData(const Utils::FilePath &filePath,
                             LaunchData *data,
                             QString *errorMessage) const;

    // Create and start a detached GUI process executing in the background.
    // Set the project environment if there is one.
    bool startEditorProcess(const LaunchData &data, QString *errorMessage);

private:
    const CommandForQtVersion m_commandForQtVersion;
};

/* Qt Designer on the remaining platforms: Uses Designer's own
 * Tcp-based communication mechanism to ensure all files are opened
 * in one instance (per version). */

class DesignerExternalEditor : public ExternalQtEditor
{
    Q_OBJECT
public:
    DesignerExternalEditor();

    bool startEditor(const Utils::FilePath &filePath, QString *errorMessage) override;

private:
    void processTerminated(const QString &binary);

    // A per-binary entry containing the socket
    using ProcessCache = QMap<QString, QTcpSocket*>;

    ProcessCache m_processCache;
};

} // namespace Internal
} // namespace QmakeProjectManager