/
AppendableDataProviderAdapter.java
70 lines (59 loc) · 1.73 KB
/
AppendableDataProviderAdapter.java
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package com.inmethod.grid;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.apache.wicket.markup.repeater.data.IDataProvider;
/**
* Created by IntelliJ IDEA.
* User: Tom B.
* Date: 9/20/11
* Time: 11:13 AM
*
* @author Tom B.
*
* TODO: make generic
*/
public class AppendableDataProviderAdapter<T>
extends DataProviderAdapter<T> implements IAppendableDataSource<T>
{
public AppendableDataProviderAdapter(IDataProvider<T> dataProvider)
{
super(dataProvider);
}
//do I need this?
private int _newItemCount = 0;
private int appendIndex;
private List items = null;
public void InsertRow(int index, T item)
{
++_newItemCount;
if (null == items) { items = new ArrayList(); }
items.add(item);
appendIndex = index;
}
public void DeleteRow(int index, T item)
{
if ( null != items && _newItemCount > 0)
{ if (items.remove(item)){ --_newItemCount; } }
}
/** {@inheritDoc} */
public void query(IQuery query, IQueryResult<T> result)
{
super.query(query, result);
if ( _newItemCount > 0 )
{
result.setTotalCount(dataProvider.size() + _newItemCount);
//TODO: THERE has GOT to be a better way to handle this
ArrayList AllItems = new ArrayList(dataProvider.size() + _newItemCount);
for ( Iterator it = dataProvider.iterator(query.getFrom(), query.getCount());
it.hasNext(); )
{ AllItems.add(it.next()); }
//for(Object item : items ) { AllItems.add(item); }
//AllItems.addAll(items);
try { AllItems.addAll(appendIndex,items); }
catch( IndexOutOfBoundsException iob )
{ AllItems.addAll(items); } //add failed for index, add to end
result.setItems(AllItems.iterator());
}
}
}