/***************************************************************

Description:
  This interperts propaccumulator data to screen properties. 
  basically just colourizes strings passed in.

Methods:
  -- shared methods --

   PropFilter     ( PropAccumulator * source = NULL );

   int     SetSource  ( propAccumulator * source = NULL );	
   int     Colourize( char * LineBuff, char * PropBuff, long buffersizes, long accumulatorPos );
   
  -- internal methods --


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          thanks.

History: 
 <Jul 28 2002> Creation Dan, 
 <Apr 13 2003> Added some code for colourize. Dan, 
 <Dec 13 2003> fixed for gcc 3.3 dan, 
 <Dec 16 2003> using proptypes dan
 

***************************************************************/

#include <stdlib.h>
#include <stdio.h>      // printf
#include <string.h>
#include "cestypes.h" 
#include "propfilter.h"       // class definition
#include "propaccumulator.h"  // dependencies.

/*****************************************
*
* Description:
*  Constructor.
*
* In:
*  VIF:             display device
*  PropAccumulator: deivice that holds prop information
*  X:               x scroll position
*  Y:               y scroll position
*
* Out:
*
*****************************************/
//PropFilter::PropFilter ( PropAccum * source = NULL ) {
PropFilter::PropFilter ( PropAccum * source ) {
  SetSource  ( source  );
  SetStyle ();
}


/****************************************
*
* This is a just a temp method to make 
*  debugging of this code esier to read.
* Though in the future, this class will have
*  a table defining how types of tags are 
*  interperted, and a method like this
*  will be needed.
*
* Summary: this is a copout
*
****************************************/

//CESError_t PropFilter::SetStyle ( int style = 31 ) {
CESError_t PropFilter::SetStyle ( int style ) {

  CursorStyle = style;
  
  return NoError;
}

/****************************************
*
* Description:
*  Set data source.
*
* In:
*   source: pointer to a prop accumulator.
*
* Out:
*   0
*
****************************************/
//CESError_t PropFilter::SetSource (  PropAccum * source = NULL ) {
CESError_t PropFilter::SetSource (  PropAccum * source  ) {
  
  SourceData = source;     // dont ask why its here...

  return NoError;
}
 



/************************************************
*
*  clean up.
*
************************************************/
PropFilter::~PropFilter ( void ) {
 return;
}



/************************************************
*
*  this will be really complicated, so for now
*   just hilight the cursor (Owner 0, Index 0)
*
************************************************/
CESError_t PropFilter::Colourize( char * LineBuff, char * PropBuff, long buffersizes, long accumulatorPos ){
 
 CES_FIELD_TAG * Cursor;
  
 // !!!???!!! this code is all temporary, darn I wish I had some help. 
 // we want to look this up by type...
// if (SourceData->get(0, 0, &Cursor) == NULL) {
 if ((Cursor = SourceData->locate(0, 0, PROP_CURSOR_START, 0)) == NULL){
   return IndexNotFound;
 }
  //for Owner 0 Index 0 (for lack of some search code in the propaccum)
    // is its position within ours? 
  if (WITHIN( accumulatorPos, accumulatorPos+strlen(LineBuff) , Cursor->getPosition() ) ) {
      // if so, apply it
      //we'll use white with a blue background which is .. 30... I think
      PropBuff[Cursor->getPosition() - accumulatorPos ] = CursorStyle;
     // LineBuff[Cursor.getPosition() - accumulatorPos ] = 'D';
  }
  
 
  return NoError; 
}