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/*
* Turbo Vision - Version 2.0
*
* Copyright (c) 1994 by Borland International
* All Rights Reserved.
*
Modified by Robert H”hne to be used for RHIDE.
Modified by Salvador E. Tropea to add functionality.
*
*
*/
// SET: Moved the standard headers here because according to DJ
// they can inconditionally declare symbols like NULL
#define Uses_ctype
#define Uses_limits
#define Uses_string
#define Uses_TKeys
#define Uses_TEvent
#define Uses_TSortedListBox
#define Uses_TSortedCollection
#include <tv.h>
#if 0
extern unsigned short getshiftstate(void);
#define shiftKeys (char)(getshiftstate() & 0xff)
#else
#define shiftKeys (char)(event.keyDown.shiftState & 0xFF)
#endif
TSortedListBox::TSortedListBox( const TRect& bounds,
ushort aNumCols,
TScrollBar *aScrollBar) :
TListBox(bounds, aNumCols, aScrollBar),
shiftState( 0 ),
searchPos( USHRT_MAX )
{
showCursor();
setCursor(1, 0);
}
// SET:
TSortedListBox::TSortedListBox( const TRect& bounds,
ushort aNumCols,
TScrollBar *aHScrollBar,
TScrollBar *aVScrollBar,
Boolean aCenterOps) :
TListBox(bounds, aNumCols, aHScrollBar, aVScrollBar, aCenterOps),
shiftState( 0 ),
searchPos( USHRT_MAX )
{
showCursor();
setCursor(1, 0);
}
static Boolean TVision_equal( const char *s1, const char *s2, ushort count)
{
return Boolean( strncasecmp( s1, s2, count ) == 0 );
}
void TSortedListBox::handleEvent(TEvent& event)
{
char curString[256], newString[256];
void* k;
int value, oldPos, oldValue;
oldValue = focused;
TListBox::handleEvent( event );
if( oldValue != focused )
searchPos = USHRT_MAX;
if (event.what == evBroadcast &&
event.message.command == cmListItemSelected &&
event.message.infoPtr == list())
{
/* When the item was selected, reset the search feature */
searchPos = USHRT_MAX;
clearEvent(event);
return;
}
if( event.what == evKeyDown )
{
if( event.keyDown.keyCode != kbEnter &&
( event.keyDown.charScan.charCode != 0 ||
event.keyDown.keyCode == kbBack ) )
{
value = focused;
if( value < range )
getText( curString, value, 255 );
else
*curString = EOS;
oldPos = searchPos;
if( event.keyDown.keyCode == kbBack )
{
if( searchPos == USHRT_MAX )
return;
// SET: 1) Avoid accessing curString[USHRT_MAX], 2) Do in the right order
curString[searchPos--] = EOS;
if( searchPos == USHRT_MAX )
shiftState = shiftKeys;
}
else if( (event.keyDown.charScan.charCode == '.') )
{
char *loc = strchr( curString+
(searchPos==USHRT_MAX ? 0 : searchPos), '.' );
if( loc )
{
searchPos = ushort(loc - curString);
if (oldPos == USHRT_MAX)
oldPos = 0;
}
else
{
if (searchPos == USHRT_MAX)
{
searchPos++;
curString[searchPos] = '.';
curString[searchPos+1] = EOS;
oldPos = 0;
}
}
}
else
{
searchPos++;
if( searchPos == 0 )
{
shiftState = shiftKeys;
oldPos = 0;
}
curString[searchPos] = event.keyDown.charScan.charCode;
curString[searchPos+1] = EOS;
}
k = getKey(curString);
list()->search( k, value );
if( value < range )
{
getText( newString, value, 255 );
if( TVision_equal( curString, newString, searchPos+1 ) )
{
if( value != oldValue )
{
focusItem(value);
setCursor( cursor.x+searchPos, cursor.y );
}
else
setCursor(cursor.x+(searchPos-oldPos), cursor.y );
}
else
searchPos = oldPos;
}
else
searchPos = oldPos;
if( searchPos != oldPos ||
ucisalpha( event.keyDown.charScan.charCode )
)
clearEvent(event);
}
}
}
void* TSortedListBox::getKey( const char *s )
{
return (void *)s;
}
void TSortedListBox::newList( TSortedCollection *aList )
{
TListBox::newList( aList );
searchPos = USHRT_MAX;
}
TStreamable *TSortedListBox::build()
{
return new TSortedListBox( streamableInit );
}
void *TSortedListBox::read( ipstream& is )
{
TListBox::read(is);
// Must initialize these or serious memory overwrite
// problems can occur!
searchPos = (ushort)-1;
shiftState = 0;
return this;
}
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