/*
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* @(#)AbstractTreeTableModel.java 1.2 98/10/27
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*
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* Copyright 1997, 1998 by Sun Microsystems, Inc.,
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* 901 San Antonio Road, Palo Alto, California, 94303, U.S.A.
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* All rights reserved.
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*
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* This software is the confidential and proprietary information
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* of Sun Microsystems, Inc. ("Confidential Information"). You
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* shall not disclose such Confidential Information and shall use
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* it only in accordance with the terms of the license agreement
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* you entered into with Sun.
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*/
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package com.vci.client.ui.treeTable;
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import javax.swing.event.EventListenerList;
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import javax.swing.event.TreeModelEvent;
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import javax.swing.event.TreeModelListener;
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import javax.swing.tree.TreePath;
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/**
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* @version 1.2 10/27/98
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* An abstract implementation of the TreeTableModel interface, handling the list
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* of listeners.
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* @author Philip Milne
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*/
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public abstract class AbstractTreeTableModel implements InterfaceTreeTableModel {
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protected Object root;
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protected EventListenerList listenerList = new EventListenerList();
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public AbstractTreeTableModel(Object root) {
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this.root = root;
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}
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//
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// Default implmentations for methods in the TreeModel interface.
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//
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public Object getRoot() {
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return root;
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}
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public boolean isLeaf(Object node) {
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return getChildCount(node) == 0;
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}
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public void valueForPathChanged(TreePath path, Object newValue) {}
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// This is not called in the JTree's default mode: use a naive implementation.
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public int getIndexOfChild(Object parent, Object child) {
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for (int i = 0; i < getChildCount(parent); i++) {
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if (getChild(parent, i).equals(child)) {
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return i;
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}
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}
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return -1;
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}
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public void addTreeModelListener(TreeModelListener l) {
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listenerList.add(TreeModelListener.class, l);
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}
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public void removeTreeModelListener(TreeModelListener l) {
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listenerList.remove(TreeModelListener.class, l);
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}
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/*
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* Notify all listeners that have registered interest for
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* notification on this event type. The event instance
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* is lazily created using the parameters passed into
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* the fire method.
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* @see EventListenerList
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*/
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protected void fireTreeNodesChanged(Object source, Object[] path,
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int[] childIndices,
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Object[] children) {
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// Guaranteed to return a non-null array
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Object[] listeners = listenerList.getListenerList();
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TreeModelEvent e = null;
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// Process the listeners last to first, notifying
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// those that are interested in this event
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for (int i = listeners.length-2; i>=0; i-=2) {
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if (listeners[i]==TreeModelListener.class) {
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// Lazily create the event:
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if (e == null)
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e = new TreeModelEvent(source, path,
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childIndices, children);
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((TreeModelListener)listeners[i+1]).treeNodesChanged(e);
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}
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}
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}
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/*
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* Notify all listeners that have registered interest for
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* notification on this event type. The event instance
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* is lazily created using the parameters passed into
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* the fire method.
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* @see EventListenerList
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*/
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protected void fireTreeNodesInserted(Object source, Object[] path,
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int[] childIndices,
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Object[] children) {
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// Guaranteed to return a non-null array
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Object[] listeners = listenerList.getListenerList();
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TreeModelEvent e = null;
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// Process the listeners last to first, notifying
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// those that are interested in this event
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for (int i = listeners.length-2; i>=0; i-=2) {
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if (listeners[i]==TreeModelListener.class) {
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// Lazily create the event:
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if (e == null)
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e = new TreeModelEvent(source, path,
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childIndices, children);
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((TreeModelListener)listeners[i+1]).treeNodesInserted(e);
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}
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}
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}
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/*
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* Notify all listeners that have registered interest for
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* notification on this event type. The event instance
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* is lazily created using the parameters passed into
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* the fire method.
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* @see EventListenerList
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*/
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protected void fireTreeNodesRemoved(Object source, Object[] path,
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int[] childIndices,
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Object[] children) {
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// Guaranteed to return a non-null array
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Object[] listeners = listenerList.getListenerList();
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TreeModelEvent e = null;
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// Process the listeners last to first, notifying
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// those that are interested in this event
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for (int i = listeners.length-2; i>=0; i-=2) {
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if (listeners[i]==TreeModelListener.class) {
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// Lazily create the event:
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if (e == null)
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e = new TreeModelEvent(source, path,
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childIndices, children);
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((TreeModelListener)listeners[i+1]).treeNodesRemoved(e);
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}
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}
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}
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/*
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* Notify all listeners that have registered interest for
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* notification on this event type. The event instance
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* is lazily created using the parameters passed into
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* the fire method.
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* @see EventListenerList
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*/
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protected void fireTreeStructureChanged(Object source, Object[] path,
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int[] childIndices,
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Object[] children) {
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// Guaranteed to return a non-null array
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Object[] listeners = listenerList.getListenerList();
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TreeModelEvent e = null;
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// Process the listeners last to first, notifying
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// those that are interested in this event
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for (int i = listeners.length-2; i>=0; i-=2) {
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if (listeners[i]==TreeModelListener.class) {
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// Lazily create the event:
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if (e == null)
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e = new TreeModelEvent(source, path,
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childIndices, children);
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((TreeModelListener)listeners[i+1]).treeStructureChanged(e);
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}
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}
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}
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//
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// Default impelmentations for methods in the TreeTableModel interface.
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//
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public Class getColumnClass(int column) { return Object.class; }
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/** By default, make the column with the Tree in it the only editable one.
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* Making this column editable causes the JTable to forward mouse
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* and keyboard events in the Tree column to the underlying JTree.
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*/
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public boolean isCellEditable(Object node, int column) {
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return getColumnClass(column) == InterfaceTreeTableModel.class;
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}
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public void setValueAt(Object aValue, Object node, int column) {}
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}
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