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/*
* Copyright (C) 2020 The Android Open Source Project
*
* 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.android.ims.rcs.uce.presence.pidfparser.pidf;
import android.annotation.NonNull;
import android.net.Uri;
import com.android.ims.rcs.uce.presence.pidfparser.ElementBase;
import com.android.internal.annotations.VisibleForTesting;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlpull.v1.XmlSerializer;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
/**
* The "present" element is the root element of an "application/pidf+xml" object.
*/
public class Presence extends ElementBase {
/**
* The presence element consists the following elements:
* 1: Any number (including 0) of <tuple> elements
* 2: Any number (including 0) of <note> elements
* 3: Any number of OPTIONAL extension elements from other namespaces.
*/
/** The name of this element */
public static final String ELEMENT_NAME = "presence";
private static final String ATTRIBUTE_NAME_ENTITY = "entity";
// The presence element must have an "entity" attribute.
private String mEntity;
// The presence element contains any number of <tuple> elements
private final List<Tuple> mTupleList = new ArrayList<>();
// The presence element contains any number of <note> elements;
private final List<Note> mNoteList = new ArrayList<>();
public Presence() {
}
public Presence(@NonNull Uri contact) {
initEntity(contact);
}
private void initEntity(Uri contact) {
mEntity = contact.toString();
}
@VisibleForTesting
public void setEntity(String entity) {
mEntity = entity;
}
@Override
protected String initNamespace() {
return PidfConstant.NAMESPACE;
}
@Override
protected String initElementName() {
return ELEMENT_NAME;
}
public String getEntity() {
return mEntity;
}
public void addTuple(@NonNull Tuple tuple) {
mTupleList.add(tuple);
}
public @NonNull List<Tuple> getTupleList() {
return Collections.unmodifiableList(mTupleList);
}
public void addNote(@NonNull Note note) {
mNoteList.add(note);
}
public @NonNull List<Note> getNoteList() {
return Collections.unmodifiableList(mNoteList);
}
@Override
public void serialize(XmlSerializer serializer) throws IOException {
String namespace = getNamespace();
String elementName = getElementName();
serializer.startTag(namespace, elementName);
// entity attribute
serializer.attribute(XmlPullParser.NO_NAMESPACE, ATTRIBUTE_NAME_ENTITY, mEntity);
// tuple elements
for (Tuple tuple : mTupleList) {
tuple.serialize(serializer);
}
// note elements
for (Note note : mNoteList) {
note.serialize(serializer);
}
serializer.endTag(namespace, elementName);
}
@Override
public void parse(XmlPullParser parser) throws IOException, XmlPullParserException {
String namespace = parser.getNamespace();
String name = parser.getName();
if (!verifyParsingElement(namespace, name)) {
throw new XmlPullParserException("Incorrect element: " + namespace + ", " + name);
}
mEntity = parser.getAttributeValue(XmlPullParser.NO_NAMESPACE, ATTRIBUTE_NAME_ENTITY);
// Move to the next event.
int eventType = parser.next();
while(!(eventType == XmlPullParser.END_TAG
&& getNamespace().equals(parser.getNamespace())
&& getElementName().equals(parser.getName()))) {
if (eventType == XmlPullParser.START_TAG) {
String tagName = parser.getName();
if (isTupleElement(eventType, tagName)) {
Tuple tuple = new Tuple();
tuple.parse(parser);
mTupleList.add(tuple);
} else if (isNoteElement(eventType, tagName)) {
Note note = new Note();
note.parse(parser);
mNoteList.add(note);
}
}
eventType = parser.next();
// Leave directly if the event type is the end of the document.
if (eventType == XmlPullParser.END_DOCUMENT) {
return;
}
}
}
private boolean isTupleElement(int eventType, String name) {
return (eventType == XmlPullParser.START_TAG && Tuple.ELEMENT_NAME.equals(name)) ?
true : false;
}
private boolean isNoteElement(int eventType, String name) {
return (eventType == XmlPullParser.START_TAG && Note.ELEMENT_NAME.equals(name)) ?
true : false;
}
}
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