/** GSWElement.m - <title>GSWeb: Class GSWElement</title>

   Copyright (C) 1999-2004 Free Software Foundation, Inc.
   
   Written by:	Manuel Guesdon <mguesdon@orange-concept.com>
   Date: 	Jan 1999
   
   $Revision$
   $Date$

   This file is part of the GNUstep Web Library.
   
   <license>
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.
   
   This library 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
   Library General Public License for more details.
   
   You should have received a copy of the GNU Library General Public
   License along with this library; if not, write to the Free
   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   </license>
**/

/*

Actually WOElement does really nothing.

*/


#include "config.h"

RCS_ID("$Id$")

#include "GSWeb.h"

BYTE ElementsMap_htmlBareString	=	(BYTE)0x53; // 'S'
BYTE ElementsMap_gswebElement	=	(BYTE)0x57; // 'W'
BYTE ElementsMap_dynamicElement	=	(BYTE)0x43; // 'C'
BYTE ElementsMap_attributeElement = 	(BYTE)0x41; // 'A'

//====================================================================
@implementation GSWElement

#ifdef GSWDEBUG_ELEMENTSIDS
//--------------------------------------------------------------------
-(void)saveAppendToResponseElementIDInContext:(id)context
{
  if(GSDebugSet(@"saveAppendToResponseElementID"))
    {
      NSString* elementID=nil;

      elementID=GSWContext_elementID(context);

      ASSIGNCOPY(_appendToResponseElementID,elementID);

      GSWAssertIsElementID(context);
    };
};

//--------------------------------------------------------------------
-(void)assertCorrectElementIDInContext:(id)context
                                method:(SEL)method
                                  file:(const char*)file
                                  line:(int)line
{
  [self assertIsElementIDInContext:context
        method:method
        file:file
        line:line];
  if ([_appendToResponseElementID length]>0)
    {
      NSString* elementID=GSWContext_elementID(context);
      BOOL appendToResponseElementIDIsFirst=NO;
      BOOL elementIDIsFirst=NO;
      BOOL OK=YES;
      appendToResponseElementIDIsFirst=([_appendToResponseElementID length]==0
                                        || [_appendToResponseElementID isEqualToString:@"0"]);

      elementIDIsFirst=([elementID length]==0
                        || [elementID isEqualToString:@"0"]);

      if (!appendToResponseElementIDIsFirst
          || appendToResponseElementIDIsFirst!=elementIDIsFirst)
        {
          OK=[_appendToResponseElementID isEqualToString:elementID];
        };
      if (!OK && ![context isInLoop])
        {
          NSString* msg=[NSString stringWithFormat:@"In Object %p Class %@ declarationName=%@ (file %s line %d), id '%@' (%p) in %@ is not the same than in appendToResponse '%@' (%p)",
                                  self,
                                  [self class],
                                  [self declarationName],
                                  file,
                                  line,
                                  GSWContext_elementID(context),
                                  GSWContext_elementID(context),
                                  NSStringFromSelector(method),
                                  _appendToResponseElementID,
                                  _appendToResponseElementID];
          //No: we may have multiple occurences NSAssert1(OK,@"%@",msg);
        };
    };
};

//--------------------------------------------------------------------
-(void)assertIsElementIDInContext:(id)context
                           method:(SEL)method
                             file:(const char*)file
                             line:(int)line
{
  if (_appendToResponseElementID
      && [_appendToResponseElementID length]==0
      && [GSWContext_elementID(context) length]>0)
    {
      NSString* msg=[NSString stringWithFormat:@"In Object %p Class %@ declarationName=%@ (file %s line %d), in %@ _appendToResponseElementID '%@' (%p) is not set",
                              self,
                              [self class],
                              [self declarationName],
                              file,
                              line,
                              NSStringFromSelector(method),
                              _appendToResponseElementID,
                              _appendToResponseElementID];
      NSAssert1(NO,@"%@",msg);
    };
};

//--------------------------------------------------------------------
-(void)logElementInContext:(id)aContext
                    method:(SEL)method
                      file:(const char*)file
                      line:(int)line
                 startFlag:(BOOL)start
                  stopFlag:(BOOL)stop
{
  NSString* senderID=GSWContext_senderID(aContext);
  if (start)
    [aContext addToDocStructureElement:self];
};

#endif


// No specific dealloc ifndef GSWELEMENT_HAS_DECLARATION_NAME
// So we avoir a call to super.
#ifdef GSWELEMENT_HAS_DECLARATION_NAME
//--------------------------------------------------------------------
-(void)dealloc
{

  DESTROY(_appendToResponseElementID);
  DESTROY(_declarationName);
  
  [super dealloc];
}
#endif

//--------------------------------------------------------------------
-(NSString*)declarationName
{
#ifdef GSWELEMENT_HAS_DECLARATION_NAME
  return _declarationName;
#else
  return @"**No available declarationName**";
#endif
};

//--------------------------------------------------------------------
-(void)setDeclarationName:(NSString*)declarationName
{
#ifdef GSWELEMENT_HAS_DECLARATION_NAME
  ASSIGN(_declarationName,declarationName);
#endif
};


//--------------------------------------------------------------------
//	takeValuesFromRequest:inContext:

-(void)takeValuesFromRequest:(GSWRequest*)request
                   inContext:(GSWContext*)context
{
  GSWStartElement(context);
  GSWAddElementToDocStructure(context);
  GSWAssertCorrectElementID(context);// Debug Only
  //Does Nothing
  GSWStopElement(context);
};

//--------------------------------------------------------------------
//	invokeActionForRequest:inContext:

-(GSWElement*)invokeActionForRequest:(GSWRequest*)request
                           inContext:(GSWContext*)context
{
  //Does Nothing
  return nil;
};

//--------------------------------------------------------------------
//	appendToResponse:inContext:

-(void)appendToResponse:(GSWResponse*)response
              inContext:(GSWContext*)context
{
//  GSWSaveAppendToResponseElementID(context);//Debug Only
//  GSWAddElementToDocStructure(context);
  //Does Nothing
};

//--------------------------------------------------------------------
//NDFN
-(BOOL)prefixMatchSenderIDInContext:(GSWContext*)aContext
{
  BOOL match=NO;
  NSString* senderID=GSWContext_senderID(aContext);
  NSString* elementID=GSWContext_elementID(aContext);

  match=([elementID hasPrefix:senderID] || [senderID hasPrefix:elementID]);

  return match;
};

@end