mirror of https://github.com/octoleo/plantuml.git
42 lines
1.7 KiB
Java
42 lines
1.7 KiB
Java
/*
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* Copyright 2003-2004, Franz-Josef Elmer, All rights reserved
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details
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* (http://www.gnu.org/copyleft/lesser.html).
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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package jcckit.graphic;
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/**
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* Interface all graphical elements have to implement.
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* Together with the marker interface {@link Renderer} it
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* realizes the Anticyclic Visitor Pattern, a variant of the
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* GoF Visitor Pattern. This allows not only to extend JCCKit with
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* new renderers but also with new types of <tt>GraphicalElements</tt>
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* without touching existing code.
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*
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* @author Franz-Josef Elmer
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*/
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public interface GraphicalElement {
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/**
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* Renders this element according to the type of renderer.
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* Concrete <tt>GraphicalElements</tt> who are not instances of
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* {@link GraphicalComposite} dynamically cast <tt>renderer</tt>.
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* If it does not implement the type of renderer specific for
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* the concrete <tt>GraphicalElement</tt> it should throw an
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* <tt>IllegalArgumentException</tt>.
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*/
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public abstract void renderWith(Renderer renderer);
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}
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