Ptidej-v5.2-master/POM Tests/data/ArgoUML_0.28/src/org/argouml/ui/TreeModelComposite.java
// $Id: TreeModelComposite.java 13829 2007-11-23 23:54:26Z tfmorris $
// Copyright (c) 1996-2006 The Regents of the University of California. All
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// software and its documentation without fee, and without a written
// agreement is hereby granted, provided that the above copyright notice
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// uninterrupted or error-free. The end-user understands that the program
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package org.argouml.ui;

import javax.swing.tree.TreeModel;
import javax.swing.tree.TreePath;

import org.apache.log4j.Logger;

/**
 * This class is the TreeModel for the navigator and todo list panels.<p>
 *
 * It is called <strong>Composite</strong> because there are a set of rules
 * that determine how to link parents to children in the tree. Those
 * rules can now be found in PerspectiveSupport.<p>
 */
public class TreeModelComposite extends TreeModelSupport implements TreeModel {

    private static final Logger LOG =
        Logger.getLogger(TreeModelComposite.class);

    /** The root of the model. */
    private Object root;

    /**
     * The constructor.
     *
     * @param name the name that will be localized
     */
    public TreeModelComposite(String name) {
        super(name);
    }


    /*
     * @see javax.swing.tree.TreeModel#getRoot()
     */
    public Object getRoot() {
        return root;
    }

    /*
     * @see javax.swing.tree.TreeModel#getChild(java.lang.Object, int)
     */
    public Object getChild(Object parent, int index) {
        for (TreeModel tm : getGoRuleList()) {
            int childCount = tm.getChildCount(parent);
            if (index < childCount) {
                return tm.getChild(parent, index);
            }
            index -= childCount;
        }
        return null;
    }

    /*
     * @see javax.swing.tree.TreeModel#getChildCount(java.lang.Object)
     */
    public int getChildCount(Object parent) {
        int childCount = 0;
        for (TreeModel tm : getGoRuleList()) {
            childCount += tm.getChildCount(parent);
        }
        return childCount;
    }

    /*
     * @see javax.swing.tree.TreeModel#getIndexOfChild(java.lang.Object,
     * java.lang.Object)
     */
    public int getIndexOfChild(Object parent, Object child) {
        int childCount = 0;
        for (TreeModel tm : getGoRuleList()) {
            int childIndex = tm.getIndexOfChild(parent, child);
            if (childIndex != -1) {
                return childIndex + childCount;
            }
            childCount += tm.getChildCount(parent);
        }
        LOG.debug("child not found!");

        //The child is sometimes not found when the tree is being updated
        return -1;
    }

    /*
     * @see javax.swing.tree.TreeModel#isLeaf(java.lang.Object)
     */
    public boolean isLeaf(Object node) {
        for (TreeModel tm : getGoRuleList()) {
            if (!tm.isLeaf(node)) {
                return false;
            }
        }
        return true;
    }


    /*
     * @see javax.swing.tree.TreeModel#valueForPathChanged(javax.swing.tree.TreePath, java.lang.Object)
     */
    public void valueForPathChanged(TreePath path, Object newValue) { 
        //  Empty implementation - not used.
    }

    
    /**
     * @param r the root of the model
     */
    public void setRoot(Object r) {
        root = r;
    }

}
