| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. 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. For additional information regarding |
| * copyright in this work, please see the NOTICE file in the top level |
| * directory of this distribution. |
| */ |
| |
| package org.apache.roller.weblogger.ui.rendering.pagers; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.roller.weblogger.business.URLStrategy; |
| import org.apache.roller.weblogger.business.Weblogger; |
| import org.apache.roller.weblogger.business.WebloggerFactory; |
| import org.apache.roller.weblogger.business.UserManager; |
| import org.apache.roller.weblogger.pojos.User; |
| import org.apache.roller.weblogger.pojos.wrapper.UserWrapper; |
| |
| |
| /** |
| * Paging through a collection of users. |
| */ |
| public class UsersPager extends AbstractPager { |
| |
| private static Log log = LogFactory.getLog(UsersPager.class); |
| |
| private String letter = null; |
| private int length = 0; |
| |
| // collection for the pager |
| private List<UserWrapper> users; |
| |
| // are there more items? |
| private boolean more = false; |
| |
| |
| public UsersPager( |
| URLStrategy strat, |
| String baseUrl, |
| String locale, |
| int sinceDays, |
| int page, |
| int length) { |
| |
| super(strat, baseUrl, page); |
| |
| this.length = length; |
| |
| // initialize the collection |
| getItems(); |
| } |
| |
| |
| public UsersPager( |
| URLStrategy strat, |
| String baseUrl, |
| String letter, |
| String locale, |
| int sinceDays, |
| int page, |
| int length) { |
| |
| super(strat, baseUrl, page); |
| |
| this.letter = letter; |
| this.length = length; |
| |
| // initialize the collection |
| getItems(); |
| } |
| |
| |
| public String getNextLink() { |
| // need to add letter param if it exists |
| if(letter != null) { |
| int page = getPage() + 1; |
| if(hasMoreItems()) { |
| Map params = new HashMap(); |
| params.put("page", ""+page); |
| params.put("letter", letter); |
| return createURL(getUrl(), params); |
| } |
| return null; |
| } else { |
| return super.getNextLink(); |
| } |
| } |
| |
| |
| public String getPrevLink() { |
| // need to add letter param if it exists |
| if(letter != null) { |
| int page = getPage() - 1; |
| if (page >= 0) { |
| Map params = new HashMap(); |
| params.put("page", ""+page); |
| params.put("letter", letter); |
| return createURL(getUrl(), params); |
| } |
| return null; |
| } else { |
| return super.getPrevLink(); |
| } |
| } |
| |
| |
| public List<UserWrapper> getItems() { |
| |
| if (users == null) { |
| // calculate offset |
| int offset = getPage() * length; |
| |
| List<UserWrapper> results = new ArrayList<UserWrapper>(); |
| try { |
| Weblogger roller = WebloggerFactory.getWeblogger(); |
| UserManager umgr = roller.getUserManager(); |
| List<User> rawUsers; |
| if (letter == null) { |
| rawUsers = umgr.getUsers(Boolean.TRUE, null, null, offset, length + 1); |
| } else { |
| rawUsers = umgr.getUsersByLetter(letter.charAt(0), offset, length + 1); |
| } |
| |
| // wrap the results |
| int count = 0; |
| for (User user : rawUsers) { |
| if (count++ < length) { |
| results.add(UserWrapper.wrap(user)); |
| } else { |
| more = true; |
| } |
| } |
| |
| } catch (Exception e) { |
| log.error("ERROR: fetching user list", e); |
| } |
| |
| users = results; |
| } |
| |
| return users; |
| } |
| |
| |
| public boolean hasMoreItems() { |
| return more; |
| } |
| |
| } |