59 lines
2.2 KiB
Java
59 lines
2.2 KiB
Java
/**
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*
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* Copyright © 2014 Florian Schmaus
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.jivesoftware.smackx.rsm;
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import java.util.Collection;
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import java.util.LinkedList;
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import java.util.List;
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import org.jivesoftware.smack.packet.ExtensionElement;
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import org.jivesoftware.smack.util.PacketUtil;
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import org.jivesoftware.smackx.rsm.packet.RSMSet;
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import org.jivesoftware.smackx.rsm.packet.RSMSet.PageDirection;
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public class RSMManager {
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Collection<ExtensionElement> page(int max) {
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List<ExtensionElement> packetExtensions = new LinkedList<>();
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packetExtensions.add(new RSMSet(max));
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return packetExtensions;
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}
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Collection<ExtensionElement> continuePage(int max, Collection<ExtensionElement> returnedExtensions) {
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return continuePage(max, returnedExtensions, null);
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}
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Collection<ExtensionElement> continuePage(int max,
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Collection<ExtensionElement> returnedExtensions,
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Collection<ExtensionElement> additionalExtensions) {
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if (returnedExtensions == null) {
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throw new IllegalArgumentException("returnedExtensions must no be null");
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}
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if (additionalExtensions == null) {
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additionalExtensions = new LinkedList<>();
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}
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RSMSet resultRsmSet = PacketUtil.extensionElementFrom(returnedExtensions, RSMSet.ELEMENT, RSMSet.NAMESPACE);
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if (resultRsmSet == null) {
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throw new IllegalArgumentException("returnedExtensions did not contain a RSMset");
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}
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RSMSet continuePageRsmSet = new RSMSet(max, resultRsmSet.getLast(), PageDirection.after);
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additionalExtensions.add(continuePageRsmSet);
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return additionalExtensions;
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}
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}
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