| /* |
| * 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.vysper.xmpp.modules.extension.xep0045_muc.stanzas; |
| |
| import java.util.ArrayList; |
| import java.util.Calendar; |
| import java.util.List; |
| |
| import org.apache.vysper.xml.fragment.Attribute; |
| import org.apache.vysper.xml.fragment.XMLElement; |
| import org.apache.vysper.xml.fragment.XMLSemanticError; |
| import org.apache.vysper.xmpp.datetime.DateTimeProfile; |
| import org.apache.vysper.xmpp.protocol.NamespaceURIs; |
| import org.apache.vysper.xmpp.stanza.Stanza; |
| |
| public class History extends XMLElement { |
| |
| private static final String ELEMENT_HISTORY = "history"; |
| |
| private static final String ATTRIBUTE_SINCE = "since"; |
| |
| private static final String ATTRIBUTE_SECONDS = "seconds"; |
| |
| private static final String ATTRIBUTE_MAXCHARS = "maxchars"; |
| |
| private static final String ATTRIBUTE_MAXSTANZAS = "maxstanzas"; |
| |
| public static History fromStanza(Stanza stanza) { |
| // history is in a x element in the MUC namespace |
| try { |
| XMLElement xElm = stanza.getSingleInnerElementsNamed("x", NamespaceURIs.XEP0045_MUC); |
| if (xElm != null) { |
| XMLElement historyElm = xElm.getSingleInnerElementsNamed("history"); |
| if (historyElm != null) { |
| return new History(historyElm); |
| } |
| } |
| |
| // history element not found |
| return null; |
| } catch (XMLSemanticError e) { |
| throw new IllegalArgumentException("Invalid stanza", e); |
| } |
| } |
| |
| public History(XMLElement elm) { |
| super(NamespaceURIs.XEP0045_MUC, ELEMENT_HISTORY, null, elm.getAttributes(), null); |
| } |
| |
| public History(Integer maxstanzas, Integer maxchars, Integer seconds, Calendar since) { |
| super(NamespaceURIs.XEP0045_MUC, ELEMENT_HISTORY, null, createAttributes(maxstanzas, maxchars, seconds, since), |
| null); |
| } |
| |
| private static List<Attribute> createAttributes(Integer maxstanzas, Integer maxchars, Integer seconds, |
| Calendar since) { |
| List<Attribute> attributes = new ArrayList<Attribute>(); |
| if (maxstanzas != null) |
| attributes.add(new Attribute(ATTRIBUTE_MAXSTANZAS, maxstanzas.toString())); |
| if (maxchars != null) |
| attributes.add(new Attribute(ATTRIBUTE_MAXCHARS, maxchars.toString())); |
| if (seconds != null) |
| attributes.add(new Attribute(ATTRIBUTE_SECONDS, seconds.toString())); |
| if (since != null) |
| attributes.add(new Attribute(ATTRIBUTE_SINCE, DateTimeProfile.getInstance().getDateTimeInUTC( |
| since.getTime()))); |
| return attributes; |
| } |
| |
| private Integer getAttributeIntValue(String name) { |
| String value = getAttributeValue(name); |
| if (value != null && value.trim().length() > 0) { |
| return Integer.valueOf(value); |
| } else { |
| return null; |
| } |
| } |
| |
| public Integer getMaxStanzas() { |
| return getAttributeIntValue(ATTRIBUTE_MAXSTANZAS); |
| } |
| |
| public Integer getMaxChars() { |
| return getAttributeIntValue(ATTRIBUTE_MAXCHARS); |
| } |
| |
| public Integer getSeconds() { |
| return getAttributeIntValue(ATTRIBUTE_SECONDS); |
| } |
| |
| public Calendar getSince() { |
| String value = getAttributeValue(ATTRIBUTE_SINCE); |
| if (value != null) { |
| // TODO handle IllegalArgumentException |
| Calendar timestamp = DateTimeProfile.getInstance().fromDateTime(value); |
| return timestamp; |
| } else { |
| return null; |
| } |
| } |
| } |