// Created on: 2001-01-18
// Created by: OCC Team
// Copyright (c) 2001-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.

#ifndef _Message_Msg_HeaderFile
#define _Message_Msg_HeaderFile

#include <Standard.hxx>
#include <Standard_DefineAlloc.hxx>
#include <Standard_Handle.hxx>

#include <TCollection_HAsciiString.hxx>
#include <TCollection_HExtendedString.hxx>
#include <TColStd_SequenceOfInteger.hxx>

class TCollection_ExtendedString;
class TCollection_AsciiString;
class TCollection_HAsciiString;
class TCollection_HExtendedString;


//! This class provides a tool for constructing the parametrized message
//! basing on resources loaded by Message_MsgFile tool.
//!
//! A Message is created from a keyword: this keyword identifies the
//! message in a message file that should be previously loaded by call
//! to Message_MsgFile::LoadFile().
//!
//! The text of the message can contain placeholders for the parameters
//! which are to be filled by the proper values when the message
//! is prepared. Most of the format specifiers used in C can be used,
//! for instance, %s for string, %d for integer etc. In addition,
//! specifier %f is supported for double numbers (for compatibility
//! with previous versions).
//!
//! User fills the parameter fields in the text of the message by
//! calling corresponding methods Arg() or operators "<<".
//!
//! The resulting message, filled with all parameters, can be obtained
//! by method Get(). If some parameters were not filled, the text
//! UNKNOWN is placed instead.
class Message_Msg 
{
public:

  DEFINE_STANDARD_ALLOC

  
  //! Empty constructor
  Standard_EXPORT Message_Msg();
  
  //! Copy constructor
  Standard_EXPORT Message_Msg(const Message_Msg& theMsg);
  
  //! Create a message using a corresponding entry in Message_MsgFile
  Standard_EXPORT Message_Msg(const Standard_CString theKey);
  
  //! Create a message using a corresponding entry in Message_MsgFile
  Standard_EXPORT Message_Msg(const TCollection_ExtendedString& theKey);
  
  //! Set a message body text -- can be used as alternative to
  //! using messages from resource file
  Standard_EXPORT void Set (const Standard_CString theMsg);
  
  //! Set a message body text -- can be used as alternative to
  //! using messages from resource file
  Standard_EXPORT void Set (const TCollection_ExtendedString& theMsg);
  
  //! Set a value for %..s conversion
  Standard_EXPORT Message_Msg& Arg (const Standard_CString theString);
Message_Msg& operator << (const Standard_CString theString)
{
  return Arg(theString);
}
  
  //! Set a value for %..s conversion
    Message_Msg& Arg (const TCollection_AsciiString& theString);
  Message_Msg& operator << (const TCollection_AsciiString& theString)
{
  return Arg(theString);
}
  
  //! Set a value for %..s conversion
    Message_Msg& Arg (const Handle(TCollection_HAsciiString)& theString);
  Message_Msg& operator << (const Handle(TCollection_HAsciiString)& theString)
{
  return Arg(theString);
}
  
  //! Set a value for %..s conversion
  Standard_EXPORT Message_Msg& Arg (const TCollection_ExtendedString& theString);
Message_Msg& operator << (const TCollection_ExtendedString& theString)
{
  return Arg(theString);
}
  
  //! Set a value for %..s conversion
    Message_Msg& Arg (const Handle(TCollection_HExtendedString)& theString);
  Message_Msg& operator << (const Handle(TCollection_HExtendedString)& theString)
{
  return Arg(theString);
}
  
  //! Set a value for %..d, %..i, %..o, %..u, %..x or %..X conversion
  Standard_EXPORT Message_Msg& Arg (const Standard_Integer theInt);
Message_Msg& operator << (const Standard_Integer theInt)
{
  return Arg(theInt);
}
  
  //! Set a value for %..f, %..e, %..E, %..g or %..G conversion
  Standard_EXPORT Message_Msg& Arg (const Standard_Real theReal);
Message_Msg& operator << (const Standard_Real theReal)
{
  return Arg(theReal);
}
  
  //! Returns the original message text
    const TCollection_ExtendedString& Original() const;
  
  //! Returns current state of the message text with
  //! parameters to the moment
    const TCollection_ExtendedString& Value() const;
  
  //! Tells if Value differs from Original
    Standard_Boolean IsEdited() const;
  
  //! Return the resulting message string with all parameters
  //! filled. If some parameters were not yet filled by calls
  //! to methods Arg (or <<), these parameters are filled by
  //! the word UNKNOWN
  Standard_EXPORT const TCollection_ExtendedString& Get();
operator const TCollection_ExtendedString& () { return Get(); }




protected:





private:

  
  Standard_EXPORT Standard_Integer getFormat (const Standard_Integer theType, TCollection_AsciiString& theFormat);
  
  Standard_EXPORT void replaceText (const Standard_Integer theFirst, const Standard_Integer theNb, const TCollection_ExtendedString& theStr);


  TCollection_ExtendedString myOriginal;
  TCollection_ExtendedString myMessageBody;
  TColStd_SequenceOfInteger mySeqOfFormats;


};


#include <Message_Msg.lxx>





#endif // _Message_Msg_HeaderFile