/* Group.java * * Copyright (c) 2003, Benja Fallenstein * * This file is part of libvob. * * libvob is free software; you can redistribute it and/or modify it under * the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * libvob 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 General * Public License for more details. * * You should have received a copy of the GNU Lesser General * Public License along with libvob; if not, write to the Free * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA * * */ /* * Written by Benja Fallenstein */ package org.nongnu.libvob.lava; import java.awt.Graphics; import java.util.*; /** A vob that contains a list of other vobs. */ public class Group implements Vob { protected final List content = new ArrayList(); protected int size = 1; public int add(Vob v) { content.add(v); int index = size; size += v.getCount(); return index; } public void close() { } public int getCount() { return size; } public void render(Graphics g, RenderTraversal t) { for(Iterator i=content.iterator(); i.hasNext();) { Vob v = (Vob)i.next(); v.render(g, t); } } public Vob getVob(int index) { if(index == 0) return this; int pos = 1; for(Iterator i=content.iterator(); i.hasNext();) { Vob v = (Vob)i.next(); if(pos + v.getCount() > index) return v.getVob(index - pos); } throw new IndexOutOfBoundsException(""+index); } public RenderTraversal transform(RenderTraversal t, int index) { if(index == 0) return t; int pos = 1; for(Iterator i=content.iterator(); i.hasNext();) { Vob v = (Vob)i.next(); if(pos + v.getCount() > index) { v.transform(t, index - pos); return t; } pos += v.getCount(); } throw new IndexOutOfBoundsException(""+index); } }