/* | |
* Copyright 2012 gitblit.com. | |
* | |
* Licensed 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 com.gitblit.wicket.panels; | |
import java.io.Serializable; | |
import java.util.ArrayList; | |
import java.util.List; | |
import org.apache.wicket.PageParameters; | |
import org.apache.wicket.markup.html.panel.Panel; | |
import org.apache.wicket.markup.repeater.Item; | |
import org.apache.wicket.markup.repeater.data.DataView; | |
import org.apache.wicket.markup.repeater.data.ListDataProvider; | |
import com.gitblit.wicket.WicketUtils; | |
import com.gitblit.wicket.pages.BasePage; | |
public class PagerPanel extends Panel { | |
private static final long serialVersionUID = 1L; | |
public PagerPanel(String wicketId, final int currentPage, final int totalPages, | |
final Class<? extends BasePage> pageClass, final PageParameters baseParams) { | |
super(wicketId); | |
List<PageObject> pages = new ArrayList<PageObject>(); | |
int[] deltas; | |
if (currentPage == 1) { | |
// [1], 2, 3, 4, 5 | |
deltas = new int[] { 0, 1, 2, 3, 4 }; | |
} else if (currentPage == 2) { | |
// 1, [2], 3, 4, 5 | |
deltas = new int[] { -1, 0, 1, 2, 3 }; | |
} else { | |
// 1, 2, [3], 4, 5 | |
deltas = new int[] { -2, -1, 0, 1, 2 }; | |
} | |
if (totalPages > 0 && currentPage > 1) { | |
pages.add(new PageObject("\u2190", currentPage - 1)); | |
} | |
for (int delta : deltas) { | |
int page = currentPage + delta; | |
if (page > 0 && page <= totalPages) { | |
pages.add(new PageObject("" + page, page)); | |
} | |
} | |
if (totalPages > 0 && currentPage < totalPages) { | |
pages.add(new PageObject("\u2192", currentPage + 1)); | |
} | |
ListDataProvider<PageObject> pagesProvider = new ListDataProvider<PageObject>(pages); | |
final DataView<PageObject> pagesView = new DataView<PageObject>("page", pagesProvider) { | |
private static final long serialVersionUID = 1L; | |
@Override | |
public void populateItem(final Item<PageObject> item) { | |
PageObject pageItem = item.getModelObject(); | |
PageParameters pageParams = new PageParameters(baseParams); | |
pageParams.put("pg", pageItem.page); | |
LinkPanel link = new LinkPanel("pageLink", null, pageItem.text, pageClass, pageParams); | |
link.setRenderBodyOnly(true); | |
item.add(link); | |
if (pageItem.page == currentPage || pageItem.page < 1 || pageItem.page > totalPages) { | |
WicketUtils.setCssClass(item, "disabled"); | |
link.setEnabled(false); | |
} | |
} | |
}; | |
add(pagesView); | |
} | |
private class PageObject implements Serializable { | |
private static final long serialVersionUID = 1L; | |
String text; | |
int page; | |
PageObject(String text, int page) { | |
this.text = text; | |
this.page = page; | |
} | |
} | |
} |