Command.h

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 * This software is governed by the CeCILL-B license under
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 */
 
 
#ifndef ANA_PROCESSOR_COMMAND_H
#define ANA_PROCESSOR_COMMAND_H
 
 
//--- header files ------------------------------------------------------------
 
#include <map>
#include <string>
 
class Tree;
 
 
//--- class declarations ------------------------------------------------------
 
 
namespace anatomist
{
  class Serializer;
  class Unserializer;
  class CommandReader;
  struct CommandContext;

  class Command
  {
  public:
    virtual ~Command();

    virtual void execute();
    virtual void undo();
    virtual void redo();
 
    typedef Command* (*Reader)( const Tree &, CommandContext * );

    virtual std::string name() const = 0;

    virtual void write( Tree & com, Serializer *ser ) const;
 
  protected:
    Command();

    virtual void doit() = 0;
    virtual void undoit();
 
  private:
    Command(const Command&);
    Command& operator=(const Command&);
  };
 
 
  //--- class declarations ----------------------------------------------------

  class RegularCommand : public Command
  {
  public:
    virtual ~RegularCommand();
 
  protected:
    RegularCommand();
  };
 
 
  //--- class declarations ----------------------------------------------------

  class SerializingCommand
  {
  public:
    virtual ~SerializingCommand();
    CommandContext *context() { return _context; }
    const CommandContext *context() const { return _context; }
 
  protected:
    SerializingCommand( CommandContext * );
 
    CommandContext *_context;
  };
 
 
  //--- class declarations ----------------------------------------------------

  class WaitCommand : public Command
  {
  public:
    virtual ~WaitCommand();

    virtual void execute();
    virtual void undo();
    virtual void redo();
 
  protected:
    WaitCommand();
  };
 
}
 
 
#endif