DashEdit.h

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// DashEdit.h
//
//
// Copyright (c) 2002 Iain Murray
//

/*
An abstract DashEditbox class is described here.
An implementation will handle interaction between Dasher and an actual Edit control.
e.g. - output characters to the edit control
     - tapping on the edit box updates the Dasher display
*/

#ifndef __DashEdit_h__
#define __DashEdit_h__

#include "DasherWidgetInterface.h"

namespace Dasher {class CDashEditbox;}
class Dasher::CDashEditbox
{
public:
        CDashEditbox() : m_dirty(false),m_iFlushed(0),  m_DasherInterface(0) {}

        virtual void SetInterface(CDasherWidgetInterface* DasherInterface) {m_DasherInterface = DasherInterface;}
        
        virtual void write_to_file()=0;
        
        //
        void set_flushed(int i) {m_iFlushed=i;}
        
        //
        virtual void get_new_context(std::string& str, int max)=0;
        
        virtual void unflush()=0;
        
        virtual void output(symbol Symbol)=0;

        virtual void deletetext()=0;
        
        //
        virtual void flush(symbol Symbol)=0;
        
        // File I/O (optional)

        //
        virtual void TimeStampNewFiles(bool ) {}

        bool IsDirty() {return m_dirty;}

        //
        virtual void New(const std::string& ) {}; // filename can be "", but you cannot call Save() without having set a filename.
        
        //
        virtual bool Open(const std::string& ) {return false;};

        // 
        virtual bool OpenAppendMode(const std::string& ) {return false;};
        // 
        virtual bool SaveAs(const std::string& ) {return false;};

        //
        virtual bool Save() {return false;}; // returns false if there is no filename set, or if saving fails
        
        // Clipboard (optional)
        //
        virtual void Cut() {};

        //
        virtual void Copy() {};

        //
        virtual void CopyAll() {};

        //
        virtual void Paste() {};

        virtual void SelectAll() {};

        virtual void Clear()=0; // Must at least be able to clear edit box

        //
        virtual void SetEncoding(Opts::FileEncodingFormats Encoding)=0;

        //
        virtual void SetFont(std::string Name, long Size)=0;
        
// TODO sort relationship between CDashEditbox and derived classes
protected:
        bool m_dirty;

        int m_iFlushed; // how many characters have been flushed

        CDasherWidgetInterface* m_DasherInterface;
};


#endif /* #ifndef __DashEdit_h__ */

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