// $Id: PredicateFind.java,v 1.7 2004/08/29 09:29:51 mvw Exp $
// Copyright (c) 1996-99 The Regents of the University of California. All
// Rights Reserved. Permission to use, copy, modify, and distribute this
// software and its documentation without fee, and without a written
// agreement is hereby granted, provided that the above copyright notice
// and this paragraph appear in all copies.  This software program and
// documentation are copyrighted by The Regents of the University of
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// does not warrant that the operation of the program will be
// uninterrupted or error-free. The end-user understands that the program
// was developed for research purposes and is advised not to rely
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// UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
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package org.argouml.uml;

import org.argouml.model.ModelFacade;
import org.tigris.gef.base.Diagram;

import org.tigris.gef.util.Predicate;
import org.tigris.gef.util.PredicateTrue;

/**
 * Class to find out if a given object fulfills certain given predicates.
 *
 */
public class PredicateFind implements Predicate {

    ////////////////////////////////////////////////////////////////
    // instance variables
    private Predicate elementName;
    private Predicate packageName;
    private Predicate diagramName;
    private Predicate theType;
    
    private Predicate specific = PredicateTrue.theInstance();

    /**
     * The constructor.
     * 
     * @param e Predicate for the element name
     * @param p Predicate for the package name
     * @param d Predicate for the diagram name
     * @param t Predicate for the type
     */
    public PredicateFind(Predicate e, Predicate p, Predicate d,
			 Predicate t) {
	elementName = e;
	packageName = p;
	diagramName = d;
	theType = t;
    }


    /**
     * @param d the given diagram
     * @return true if the name of the given diagram equals
     */
    public boolean matchDiagram(Diagram d) {
	boolean res = diagramName.predicate(d.getName());
	return res;
    }

    /**
     * @param m the given package
     * @return true if the name of the given package is equal
     */
    public boolean matchPackage(Object/*MModel*/ m) {
	boolean res = packageName.predicate(ModelFacade.getName(m));
	return res;
    }

    /**
     * @see org.tigris.gef.util.Predicate#predicate(java.lang.Object)
     */
    public boolean predicate(Object o) {
	if (!(ModelFacade.isAModelElement(o))) return false;
	Object me = /*(MModelElement)*/ o;
	return theType.predicate(me) && specific.predicate(me) 
	    && elementName.predicate(ModelFacade.getName(me));
    }

} /* end class PredicateFind */