projectmanageradapter.h

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/*****************************************************************************
 * Copyright 2015 Haye Hinrichsen, Christoph Wick
 *
 * This file is part of Entropy Piano Tuner.
 *
 * Entropy Piano Tuner is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or (at your
 * option) any later version.
 *
 * Entropy Piano Tuner is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * Entropy Piano Tuner. If not, see http://www.gnu.org/licenses/.
 *****************************************************************************/

//=============================================================================
//                       Adapter for project management
//=============================================================================


#ifndef PROJECTMANAGERADAPTER_H
#define PROJECTMANAGERADAPTER_H

#include <string>
#include "../piano/pianofile.h"
#include "../messages/messagelistener.h"

class Core;
class Piano;



class FileChangesCallback
{
public:
    virtual void changesInFileUpdated(bool changes) = 0;
};



class ProjectManagerAdapter : public MessageListener
{
public:
    enum Results
    {
        R_CANCELED,
        R_YES,
        R_NO,
        R_ACCEPTED,
    };



    struct FileDialogResult {
        FileDialogResult(const std::string path = "");

        const std::string path;
        const piano::FileType fileType;

        bool isValid() {return path.size() != 0 && fileType != piano::FT_NONE;}
    };

public:
    ProjectManagerAdapter();                    
    virtual ~ProjectManagerAdapter() {}         

    void init(Core *core);                      // Initialize the adapter
    void setCallback(FileChangesCallback *cb);  // Set callback function

    bool hasChangesInFile() const {return mChangesInFile;}

    const std::string &getCurrentFilePath() const {return mCurrentFilePath;}


    // signals to be called from the gui
    Results onNewFile();
    Results onSaveFile();
    Results onSaveFileAs();
    Results onOpenFile();
    bool    onQuit();
    Results onEditFile();
    Results onShare();
    Results onExport();


    // open or save file
    Results saveFile(const std::string &path, piano::FileType type);
    Results openFile(const std::string &path, bool cached = false);

protected:
    // signals to be reimplemented by the gui

    virtual Results editFile() = 0;

    virtual Results askForSaving() = 0;

    virtual FileDialogResult getSavePath(int fileType) = 0;

    virtual FileDialogResult getOpenPath(int fileType) = 0;

    virtual Results share() = 0;

    virtual void fillNew(Piano &piano) = 0;

    virtual void showOpenError() = 0;

    virtual void showSaveError() = 0;

    virtual void handleMessage(MessagePtr m) override;

    void setChangesInFile(bool b);
private:
    Results checkForNoChanges();

protected:
    Core *mCore;

    PianoFile mPianoFile;

private:
    bool mChangesInFile;

    FileChangesCallback *mCallback = nullptr;

    std::string mCurrentFilePath;
};

#endif // PROJECTMANAGERADAPTER_H