java.fedora.utilities.policyEditor.AbstractTreeTableModel Maven / Gradle / Ivy
/*
* -----------------------------------------------------------------------------
*
* License and Copyright: The contents of this file are subject to the
* Apache License, Version 2.0 (the "License"); you may not use
* this file except in compliance with the License. You may obtain a copy of
* the License at
* http://www.fedora-commons.org/licenses.
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
* the specific language governing rights and limitations under the License.
*
* The entire file consists of original code.
* Copyright © 2008 Fedora Commons, Inc.
*
Copyright © 2002-2007 The Rector and Visitors of the University of
* Virginia and Cornell University
* All rights reserved.
*
* -----------------------------------------------------------------------------
*/
/*
*/
package fedora.utilities.policyEditor;
import javax.swing.tree.*;
import javax.swing.event.*;
public abstract class AbstractTreeTableModel implements TreeTableModel
{
protected Object root;
protected EventListenerList listenerList = new EventListenerList();
public AbstractTreeTableModel(Object root)
{
this.root = root;
}
//
// Default implmentations for methods in the TreeModel interface.
//
public Object getRoot()
{
return root;
}
public boolean isLeaf(Object node)
{
return getChildCount(node) == 0;
}
public void valueForPathChanged(TreePath path, Object newValue) {}
// This is not called in the JTree's default mode: use a naive implementation.
public int getIndexOfChild(Object parent, Object child)
{
for (int i = 0; i < getChildCount(parent); i++)
{
if (getChild(parent, i).equals(child))
{
return i;
}
}
return -1;
}
public void addTreeModelListener(TreeModelListener l)
{
listenerList.add(TreeModelListener.class, l);
}
public void removeTreeModelListener(TreeModelListener l)
{
listenerList.remove(TreeModelListener.class, l);
}
/*
* Notify all listeners that have registered interest for
* notification on this event type. The event instance
* is lazily created using the parameters passed into
* the fire method.
* @see EventListenerList
*/
protected void fireTreeNodesChanged(Object source, Object[] path,
int[] childIndices,
Object[] children)
{
// Guaranteed to return a non-null array
Object[] listeners = listenerList.getListenerList();
TreeModelEvent e = null;
// Process the listeners last to first, notifying
// those that are interested in this event
for (int i = listeners.length-2; i>=0; i-=2)
{
if (listeners[i]==TreeModelListener.class)
{
// Lazily create the event:
if (e == null)
e = new TreeModelEvent(source, path,
childIndices, children);
((TreeModelListener)listeners[i+1]).treeNodesChanged(e);
}
}
}
/*
* Notify all listeners that have registered interest for
* notification on this event type. The event instance
* is lazily created using the parameters passed into
* the fire method.
* @see EventListenerList
*/
protected void fireTreeNodesInserted(Object source, Object[] path,
int[] childIndices,
Object[] children)
{
// Guaranteed to return a non-null array
Object[] listeners = listenerList.getListenerList();
TreeModelEvent e = null;
// Process the listeners last to first, notifying
// those that are interested in this event
for (int i = listeners.length-2; i>=0; i-=2)
{
if (listeners[i]==TreeModelListener.class)
{
// Lazily create the event:
if (e == null)
e = new TreeModelEvent(source, path,
childIndices, children);
((TreeModelListener)listeners[i+1]).treeNodesInserted(e);
}
}
}
/*
* Notify all listeners that have registered interest for
* notification on this event type. The event instance
* is lazily created using the parameters passed into
* the fire method.
* @see EventListenerList
*/
protected void fireTreeNodesRemoved(Object source, Object[] path,
int[] childIndices,
Object[] children)
{
// Guaranteed to return a non-null array
Object[] listeners = listenerList.getListenerList();
TreeModelEvent e = null;
// Process the listeners last to first, notifying
// those that are interested in this event
for (int i = listeners.length-2; i>=0; i-=2)
{
if (listeners[i]==TreeModelListener.class)
{
// Lazily create the event:
if (e == null)
e = new TreeModelEvent(source, path,
childIndices, children);
((TreeModelListener)listeners[i+1]).treeNodesRemoved(e);
}
}
}
/*
* Notify all listeners that have registered interest for
* notification on this event type. The event instance
* is lazily created using the parameters passed into
* the fire method.
* @see EventListenerList
*/
protected void fireTreeStructureChanged(Object source, Object[] path,
int[] childIndices,
Object[] children)
{
// Guaranteed to return a non-null array
Object[] listeners = listenerList.getListenerList();
TreeModelEvent e = null;
// Process the listeners last to first, notifying
// those that are interested in this event
for (int i = listeners.length-2; i>=0; i-=2)
{
if (listeners[i]==TreeModelListener.class)
{
// Lazily create the event:
if (e == null)
{
e = new TreeModelEvent(source, path,
childIndices, children);
}
((TreeModelListener)listeners[i+1]).treeStructureChanged(e);
}
}
}
//
// Default impelmentations for methods in the TreeTableModel interface.
//
public Class getColumnClass(int column) { return Object.class; }
/** By default, make the column with the Tree in it the only editable one.
* Making this column editable causes the JTable to forward mouse
* and keyboard events in the Tree column to the underlying JTree.
*/
public boolean isCellEditable(Object node, int column)
{
return true; //getColumnClass(column) == TreeTableModel.class;
}
public void setValueAt(Object aValue, Object node, int column) {}
// Left to be implemented in the subclass:
/*
* public Object getChild(Object parent, int index)
* public int getChildCount(Object parent)
* public int getColumnCount()
* public String getColumnName(Object node, int column)
* public Object getValueAt(Object node, int column)
*/
}
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