/*
* OptionTreeModel.java - OptionGroup-backed TreeModel
* :tabSize=4:indentSize=4:noTabs=false:
* :folding=explicit:collapseFolds=1:
*
* Portions Copyright (C) 2003 Slava Pestov
* Copyright (C) 2012 Alan Ezust
* Copyright (C) 2016 Eric Le Lay (extracted from PluginOptionGroup)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or any later version.
*
* This program 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
package org.jedit.options;
import javax.swing.event.EventListenerList;
import javax.swing.event.TreeModelEvent;
import javax.swing.event.TreeModelListener;
import javax.swing.tree.TreeModel;
import javax.swing.tree.TreePath;
import org.gjt.sp.jedit.OptionGroup;
/**
* TreeModel implementation backed by an OptionGroup
**/
public class OptionTreeModel implements TreeModel
{
private OptionGroup root;
private EventListenerList listenerList;
public OptionTreeModel()
{
this(new OptionGroup(null));
}
public OptionTreeModel(OptionGroup root)
{
this.root = root;
listenerList = new EventListenerList();
}
public void addTreeModelListener(TreeModelListener l)
{
listenerList.add(TreeModelListener.class, l);
}
public void removeTreeModelListener(TreeModelListener l)
{
listenerList.remove(TreeModelListener.class, l);
}
public Object getChild(Object parent, int index)
{
if (parent instanceof OptionGroup)
{
return ((OptionGroup)parent).getMember(index);
}
else
{
return null;
}
}
public int getChildCount(Object parent)
{
if (parent instanceof OptionGroup)
{
return ((OptionGroup)parent).getMemberCount();
}
else
{
return 0;
}
}
public int getIndexOfChild(Object parent, Object child)
{
if (parent instanceof OptionGroup)
{
return ((OptionGroup)parent)
.getMemberIndex(child);
}
else
{
return -1;
}
}
public Object getRoot()
{
return root;
}
public boolean isLeaf(Object node)
{
return !(node instanceof OptionGroup);
}
public void valueForPathChanged(TreePath path, Object newValue)
{
// this model may not be changed by the TableCellEditor
}
protected void fireNodesChanged(Object source, Object[] path,
int[] childIndices, Object[] children)
{
Object[] listeners = listenerList.getListenerList();
TreeModelEvent modelEvent = null;
for (int i = listeners.length - 2; i >= 0; i -= 2)
{
if (listeners[i] != TreeModelListener.class)
continue;
if (modelEvent == null)
{
modelEvent = new TreeModelEvent(source,
path, childIndices, children);
}
((TreeModelListener)listeners[i + 1])
.treeNodesChanged(modelEvent);
}
}
protected void fireNodesInserted(Object source, Object[] path,
int[] childIndices, Object[] children)
{
Object[] listeners = listenerList.getListenerList();
TreeModelEvent modelEvent = null;
for (int i = listeners.length - 2; i >= 0; i -= 2)
{
if (listeners[i] != TreeModelListener.class)
continue;
if (modelEvent == null)
{
modelEvent = new TreeModelEvent(source,
path, childIndices, children);
}
((TreeModelListener)listeners[i + 1])
.treeNodesInserted(modelEvent);
}
}
protected void fireNodesRemoved(Object source, Object[] path,
int[] childIndices, Object[] children)
{
Object[] listeners = listenerList.getListenerList();
TreeModelEvent modelEvent = null;
for (int i = listeners.length - 2; i >= 0; i -= 2)
{
if (listeners[i] != TreeModelListener.class)
continue;
if (modelEvent == null)
{
modelEvent = new TreeModelEvent(source,
path, childIndices, children);
}
((TreeModelListener)listeners[i + 1])
.treeNodesRemoved(modelEvent);
}
}
protected void fireTreeStructureChanged(Object source,
Object[] path, int[] childIndices, Object[] children)
{
Object[] listeners = listenerList.getListenerList();
TreeModelEvent modelEvent = null;
for (int i = listeners.length - 2; i >= 0; i -= 2)
{
if (listeners[i] != TreeModelListener.class)
continue;
if (modelEvent == null)
{
modelEvent = new TreeModelEvent(source,
path, childIndices, children);
}
((TreeModelListener)listeners[i + 1])
.treeStructureChanged(modelEvent);
}
}
}