/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under 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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.wicket.extensions.markup.html.repeater.data.table;
import org.apache.wicket.AttributeModifier;
import org.apache.wicket.markup.html.WebMarkupContainer;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.model.AbstractReadOnlyModel;
import org.apache.wicket.model.IModel;
import org.apache.wicket.model.ResourceModel;
/**
* A toolbar that displays a "no records found" message when the data table contains no rows.
* <p>
* The message can be overridden by providing a resource with key
* <code>datatable.no-records-found</code>
*
* @see DefaultDataTable
*
* @author Igor Vaynberg (ivaynberg)
*
*/
public class NoRecordsToolbar extends AbstractToolbar
{
private static final long serialVersionUID = 1L;
private static final IModel<String> DEFAULT_MESSAGE_MODEL = new ResourceModel(
"datatable.no-records-found");
/**
* Constructor
*
* @param table
* data table this toolbar will be attached to
*/
public NoRecordsToolbar(final DataTable<?, ?> table)
{
this(table, DEFAULT_MESSAGE_MODEL);
}
/**
* @param table
* data table this toolbar will be attached to
* @param messageModel
* model that will be used to display the "no records found" message
*/
public NoRecordsToolbar(final DataTable<?, ?> table, final IModel<String> messageModel)
{
super(table);
WebMarkupContainer td = new WebMarkupContainer("td");
add(td);
td.add(AttributeModifier.replace("colspan", new AbstractReadOnlyModel<String>()
{
private static final long serialVersionUID = 1L;
@Override
public String getObject()
{
return String.valueOf(table.getColumns().size()).intern();
}
}));
td.add(new Label("msg", messageModel));
}
/**
* Only shows this toolbar when there are no rows
*
* @see org.apache.wicket.Component#isVisible()
*/
@Override
public boolean isVisible()
{
return getTable().getRowCount() == 0;
}
}