package com.onaro.util.jfc.treeTable;

/*
 * @(#)treeTable.TreeTableModelAdapter.java	1.2 98/10/27
 *
 * Copyright 1997, 1998 by Sun Microsystems, Inc.,
 * 901 San Antonio Road, Palo Alto, California, 94303, U.S.A.
 * All rights reserved.
 *
 * This software is the confidential and proprietary information
 * of Sun Microsystems, Inc. ("Confidential Information").  You
 * shall not disclose such Confidential Information and shall use
 * it only in accordance with the terms of the license agreement
 * you entered into with Sun.
 */

import javax.swing.JTree;
import javax.swing.SwingUtilities;
import javax.swing.table.AbstractTableModel;
import javax.swing.tree.TreePath;
import javax.swing.event.TreeExpansionEvent;
import javax.swing.event.TreeExpansionListener;
import javax.swing.event.TreeModelEvent;
import javax.swing.event.TreeModelListener;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

/**
 * This is a wrapper class takes a treeTable.TreeTableModel and implements
 * the table model interface. The implementation is trivial, with
 * all of the event dispatching support provided by the superclass:
 * the AbstractTableModel.
 *
 * @author Philip Milne
 * @author Scott Violet
 * @version 1.2 10/27/98
 */
public class TreeTableModelAdapter extends AbstractTableModel {
	
	private static final long serialVersionUID = 1L;

	static final Logger logger = LogManager.getLogger(TreeTableModelAdapter.class);
	
    JTree tree;
    TreeTableModel treeTableModel;

    public TreeTableModelAdapter(TreeTableModel treeTableModel, JTree tree) {
        this.tree = tree;
        this.treeTableModel = treeTableModel;

        tree.addTreeExpansionListener(new TreeExpansionListener() {
            // Don't use fireTableRowsInserted() here; the selection model
            // would get updated twice.
            public void treeExpanded(TreeExpansionEvent event) {
                fireTableDataChanged();
            }

            public void treeCollapsed(TreeExpansionEvent event) {
                fireTableDataChanged();
            }
        });

        // Install a TreeModelListener that can update the table when
        // tree changes. We use delayedFireTableDataChanged as we can
        // not be guaranteed the tree will have finished processing
        // the event before us.
        treeTableModel.addTreeModelListener(new TreeModelListener() {
            public void treeNodesChanged(TreeModelEvent e) {
                delayedFireTableDataChanged();
            }

            public void treeNodesInserted(TreeModelEvent e) {
                delayedFireTableDataChanged();
            }

            public void treeNodesRemoved(TreeModelEvent e) {
                delayedFireTableDataChanged();
            }

            public void treeStructureChanged(TreeModelEvent e) {
                // if (e.getChildren() != null && e.getChildren().length > 0) {
                delayedFireTableDataChanged();
                // }
            }
        });

        treeTableModel.addTreeTableListener(new TreeTableListener() {
            public void tableStructureChanged(TreeTableModel source) {
                fireTableStructureChanged();
            }
        });
    }

    // Wrappers, implementing TableModel interface. 

    public int getColumnCount() {
        return treeTableModel.getColumnCount();
    }

    public String getColumnName(int column) {
        return treeTableModel.getColumnName(column);
    }

    public Class<?> getColumnClass(int column) {
        return treeTableModel.getColumnClass(column);
    }

    public int getRowCount() {
        return tree.getRowCount();
    }

    protected Object nodeForRow(int row) {
    	try {
	        TreePath treePath = tree.getPathForRow(row);
	        return treePath != null ? treePath.getLastPathComponent() : null;
    	} catch (NullPointerException e) {
    		// This can happen if the tree is not in sync with the grouping model
    		return null;
    	}
    }

    public Object getValueAt(int row, int column) {
        if (row < 0 || column < 0) return null;
        return treeTableModel.getValueAt(nodeForRow(row), column);
    }

    public boolean isCellEditable(int row, int column) {
        return treeTableModel.isCellEditable(nodeForRow(row), column);
    }

    public void setValueAt(Object value, int row, int column) {
        if (row < 0 || column < 0) return;
        Object node = nodeForRow(row);
        if (node != null) treeTableModel.setValueAt(value, node, column);
    }

    public boolean isLeaf(int row) {
        if (row < 0 || row >= getRowCount()) return true;
        Object nodeForRow = nodeForRow(row);
		return nodeForRow == null ? true : treeTableModel.isLeaf(nodeForRow);
    }

    /**
     * Invokes fireTableDataChanged after all the pending events have been
     * processed. SwingUtilities.invokeLater is used to handle this.
     */
    protected void delayedFireTableDataChanged() {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                fireTableDataChanged();
            }
        });
    }
}