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/*------------------------------------------------------------------------
* SymbolSet
*
* Copyright 2007-2010 (c) Jeff Brown <spadix@users.sourceforge.net>
*
* This file is part of the ZBar Bar Code Reader.
*
* The ZBar Bar Code Reader is free software; you can redistribute it
* and/or modify it under the terms of the GNU Lesser Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* The ZBar Bar Code Reader 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 Lesser Public License for more details.
*
* You should have received a copy of the GNU Lesser Public License
* along with the ZBar Bar Code Reader; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301 USA
*
* http://sourceforge.net/projects/zbar
*------------------------------------------------------------------------*/
package net.sourceforge.zbar;
/** Immutable container for decoded result symbols associated with an image
* or a composite symbol.
*/
public class SymbolSet
extends java.util.AbstractCollection<Symbol>
{
/** C pointer to a zbar_symbol_set_t. */
private long peer;
static
{
System.loadLibrary("zbarjni");
init();
}
private static native void init();
/** SymbolSets are only created by other package methods. */
SymbolSet (long peer)
{
this.peer = peer;
}
protected void finalize ()
{
destroy();
}
/** Clean up native data associated with an instance. */
public synchronized void destroy ()
{
if(peer != 0) {
destroy(peer);
peer = 0;
}
}
/** Release the associated peer instance. */
private native void destroy(long peer);
/** Retrieve an iterator over the Symbol elements in this collection. */
public java.util.Iterator<Symbol> iterator ()
{
long sym = firstSymbol(peer);
if(sym == 0)
return(new SymbolIterator(null));
return(new SymbolIterator(new Symbol(sym)));
}
/** Retrieve the number of elements in the collection. */
public native int size();
/** Retrieve C pointer to first symbol in the set. */
private native long firstSymbol(long peer);
}
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