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/*******************************************************************************
* Copyright (c) 2004, 2005 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.wst.command.internal.env.core.selection;
import java.util.Vector;
/*
* This class can be used to store a hierarchy of SelectionList
* objects.
*/
public class SelectionListChoices
{
private SelectionList selectionList_;
private Vector choices_;
private SelectionList newValueSelectionList_;
/**
*
* @param list The selection list.
* @param choices This is a vector of SelectionListChoies and can be
* null if there are no choices. This index of list
* is used to index into choices. If index is -1 then
* the newValueSelectionList is used.
*/
public SelectionListChoices( SelectionList list, Vector choices )
{
selectionList_ = list;
choices_ = choices;
newValueSelectionList_ = new SelectionList( new String[0], -1 );
}
public SelectionListChoices( SelectionList list, Vector choices, SelectionList newList )
{
this( list, choices );
newValueSelectionList_ = newList;
}
/**
* @return returns the current Selection list.
*/
public SelectionList getList()
{
return selectionList_;
}
/**
*
* @return returns the choices for this object.
*/
public Vector getChoices()
{
return choices_;
}
/**
*
* @param level the level in the hierarchy where we want to get the choices.
* @return returns a vector of SelectionListChoices.
*/
public Vector getChoicesAtLevel( int level )
{
SelectionListChoices choices = this;
for( int index = 0; index < level; index++ )
{
choices = choices.getChoice();
}
return choices.getChoices();
}
/**
*
* @return returns the current SelectionListChoice
*/
public SelectionListChoices getChoice()
{
int selectionIndex = selectionList_.getIndex();
SelectionListChoices result = null;
if( selectionIndex == -1 )
{
result = new SelectionListChoices( newValueSelectionList_, null );
}
else if( choices_ != null && choices_.size() != 0 )
{
result = (SelectionListChoices)choices_.elementAt( selectionIndex );
}
return result;
}
/**
*
* @param index the index of the choice we want.
* @return returns the SelectionListChoice at the index specified.
*/
public SelectionListChoices getChoice(int index)
{
SelectionListChoices result = null;
if (index < 0 || index >= getList().getList().length)
{
result = new SelectionListChoices( newValueSelectionList_, null );
}
else
{
result = (SelectionListChoices)choices_.elementAt( index );
}
return result;
}
}
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