/*
 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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 General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package com.sun.xml.internal.xsom.impl;

import com.sun.xml.internal.xsom.XSElementDecl;
import com.sun.xml.internal.xsom.XSModelGroup;
import com.sun.xml.internal.xsom.XSModelGroupDecl;
import com.sun.xml.internal.xsom.XSParticle;
import com.sun.xml.internal.xsom.XSTerm;
import com.sun.xml.internal.xsom.XSWildcard;
import com.sun.xml.internal.xsom.impl.parser.SchemaDocumentImpl;
import com.sun.xml.internal.xsom.visitor.XSFunction;
import com.sun.xml.internal.xsom.visitor.XSTermFunction;
import com.sun.xml.internal.xsom.visitor.XSTermFunctionWithParam;
import com.sun.xml.internal.xsom.visitor.XSTermVisitor;
import com.sun.xml.internal.xsom.visitor.XSVisitor;
import org.xml.sax.Locator;

import java.util.Arrays;
import java.util.Iterator;

public class ModelGroupImpl extends ComponentImpl implements XSModelGroup, Ref.Term
{
    public ModelGroupImpl( SchemaDocumentImpl owner, AnnotationImpl _annon, Locator _loc, ForeignAttributesImpl _fa,
                           Compositor _compositor, ParticleImpl[] _children ) {

        super(owner,_annon,_loc,_fa);
        this.compositor = _compositor;
        this.children = _children;

        if(compositor==null)
            throw new IllegalArgumentException();
        for( int i=children.length-1; i>=0; i-- )
            if(children[i]==null)
                throw new IllegalArgumentException();
    }

    private final ParticleImpl[] children;
    public ParticleImpl getChild( int idx ) { return children[idx]; }
    public int getSize() { return children.length; }

    public ParticleImpl[] getChildren() { return children; }


    private final Compositor compositor;
    public Compositor getCompositor() { return compositor; }


    public void redefine(ModelGroupDeclImpl oldMG) {
        for (ParticleImpl p : children)
            p.redefine(oldMG);
    }

    public Iterator<XSParticle> iterator() {
        return Arrays.asList((XSParticle[])children).iterator();
    }


    public boolean isWildcard()                 { return false; }
    public boolean isModelGroupDecl()           { return false; }
    public boolean isModelGroup()               { return true; }
    public boolean isElementDecl()              { return false; }

    public XSWildcard asWildcard()              { return null; }
    public XSModelGroupDecl asModelGroupDecl()  { return null; }
    public XSModelGroup asModelGroup()          { return this; }
    public XSElementDecl asElementDecl()        { return null; }



    public void visit( XSVisitor visitor ) {
        visitor.modelGroup(this);
    }
    public void visit( XSTermVisitor visitor ) {
        visitor.modelGroup(this);
    }
    public Object apply( XSTermFunction function ) {
        return function.modelGroup(this);
    }

    public <T,P> T apply(XSTermFunctionWithParam<T, P> function, P param) {
        return function.modelGroup(this,param);
    }

    public Object apply( XSFunction function ) {
        return function.modelGroup(this);
    }

    // Ref.Term implementation
    public XSTerm getTerm() { return this; }
}
