/*
* 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.util.io.IClusterable;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.navigation.paging.IPageableItems;
import org.apache.wicket.model.Model;
import org.apache.wicket.model.StringResourceModel;
/**
* Label that provides Showing x to y of z message given for a DataTable. The message can be
* overridden using the <code>NavigatorLabel</code> property key, the default message is used is of
* the format <code>Showing ${from} to ${to} of ${of}</code>. The message can also be configured
* pragmatically by setting it as the model object of the label.
*
* @author Igor Vaynberg (ivaynberg)
*
*/
public class NavigatorLabel extends Label
{
private static final long serialVersionUID = 1L;
/**
* Construct.
*
* @param id
* @param pageable
*/
public NavigatorLabel(final String id, final IPageableItems pageable)
{
super(id);
setDefaultModel(new StringResourceModel("NavigatorLabel", this,
new Model<>(new LabelModelObject(pageable))));
}
private static class LabelModelObject implements IClusterable
{
private static final long serialVersionUID = 1L;
private final IPageableItems pageable;
/**
* Construct.
*
* @param table
*/
public LabelModelObject(final IPageableItems table)
{
pageable = table;
}
/**
* @return "z" in "Showing x to y of z"
*/
public long getOf()
{
return pageable.getItemCount();
}
/**
* @return "x" in "Showing x to y of z"
*/
public long getFrom()
{
if (getOf() == 0)
{
return 0;
}
return pageable.getCurrentPage() * pageable.getItemsPerPage() + 1;
}
/**
* @return "y" in "Showing x to y of z"
*/
public long getTo()
{
if (getOf() == 0)
{
return 0;
}
return Math.min(getOf(), getFrom() + pageable.getItemsPerPage() - 1);
}
}
}