118 lines
4.9 KiB
Java
118 lines
4.9 KiB
Java
/**
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*
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* Copyright 2014 Vyacheslav Blinov
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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.amp;
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import org.jivesoftware.smack.SmackException.NoResponseException;
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import org.jivesoftware.smack.SmackException.NotConnectedException;
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import org.jivesoftware.smack.XMPPConnection;
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import org.jivesoftware.smack.ConnectionCreationListener;
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import org.jivesoftware.smack.XMPPConnectionRegistry;
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import org.jivesoftware.smack.XMPPException.XMPPErrorException;
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import org.jivesoftware.smackx.amp.packet.AMPExtension;
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import org.jivesoftware.smackx.disco.ServiceDiscoveryManager;
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/**
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* Manages AMP stanzas within messages. A AMPManager provides a high level access to
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* get and set AMP rules to messages.
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*
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* See http://xmpp.org/extensions/xep-0079.html for AMP extension details
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*
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* @author Vyacheslav Blinov
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*/
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public class AMPManager {
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// Enable the AMP support on every established connection
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// The ServiceDiscoveryManager class should have been already initialized
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static {
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XMPPConnectionRegistry.addConnectionCreationListener(new ConnectionCreationListener() {
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public void connectionCreated(XMPPConnection connection) {
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AMPManager.setServiceEnabled(connection, true);
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}
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});
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}
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/**
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* Enables or disables the AMP support on a given connection.<p>
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*
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* Before starting to send AMP messages to a user, check that the user can handle XHTML
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* messages. Enable the AMP support to indicate that this client handles XHTML messages.
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*
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* @param connection the connection where the service will be enabled or disabled
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* @param enabled indicates if the service will be enabled or disabled
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*/
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public synchronized static void setServiceEnabled(XMPPConnection connection, boolean enabled) {
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if (isServiceEnabled(connection) == enabled)
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return;
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if (enabled) {
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ServiceDiscoveryManager.getInstanceFor(connection).addFeature(AMPExtension.NAMESPACE);
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}
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else {
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ServiceDiscoveryManager.getInstanceFor(connection).removeFeature(AMPExtension.NAMESPACE);
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}
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}
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/**
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* Returns true if the AMP support is enabled for the given connection.
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*
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* @param connection the connection to look for AMP support
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* @return a boolean indicating if the AMP support is enabled for the given connection
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*/
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public static boolean isServiceEnabled(XMPPConnection connection) {
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connection.getServiceName();
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return ServiceDiscoveryManager.getInstanceFor(connection).includesFeature(AMPExtension.NAMESPACE);
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}
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/**
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* Check if server supports specified action.
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* @param connection active xmpp connection
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* @param action action to check
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* @return true if this action is supported.
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* @throws XMPPErrorException
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* @throws NoResponseException
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* @throws NotConnectedException
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* @throws InterruptedException
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*/
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public static boolean isActionSupported(XMPPConnection connection, AMPExtension.Action action) throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
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String featureName = AMPExtension.NAMESPACE + "?action=" + action.toString();
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return isFeatureSupportedByServer(connection, featureName);
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}
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/**
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* Check if server supports specified condition.
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* @param connection active xmpp connection
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* @param conditionName name of condition to check
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* @return true if this condition is supported.
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* @throws XMPPErrorException
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* @throws NoResponseException
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* @throws NotConnectedException
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* @throws InterruptedException
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* @see AMPDeliverCondition
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* @see AMPExpireAtCondition
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* @see AMPMatchResourceCondition
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*/
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public static boolean isConditionSupported(XMPPConnection connection, String conditionName) throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
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String featureName = AMPExtension.NAMESPACE + "?condition=" + conditionName;
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return isFeatureSupportedByServer(connection, featureName);
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}
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private static boolean isFeatureSupportedByServer(XMPPConnection connection, String featureName) throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
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return ServiceDiscoveryManager.getInstanceFor(connection).serverSupportsFeature(featureName);
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}
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}
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