mirror of
https://codeberg.org/Mercury-IM/Smack
synced 2024-11-14 03:32:06 +01:00
244 lines
13 KiB
HTML
244 lines
13 KiB
HTML
<html>
|
|
<head>
|
|
<title>Message Events</title>
|
|
<link rel="stylesheet" type="text/css" href="style.css" />
|
|
</head>
|
|
|
|
<body>
|
|
|
|
<div class="header">Message Events</div><p>
|
|
|
|
This extension is used to request and respond to events relating to the delivery,
|
|
display, and composition of messages. There are three stages in this extension:<ol>
|
|
<li>Request for event notifications,
|
|
<li>Receive the event notification requests and send event notifications, and
|
|
<li>Receive the event notifications.</ol>
|
|
<p>For more information on each stage please follow these links:</p>
|
|
<ul>
|
|
<li><a href="#reqevnot">Requesting Event Notifications</a></li>
|
|
<li><a href="#lstevnotreq">Reacting to Event Notification Requests</a></li>
|
|
<li><a href="#lstevnot">Reacting to Event Notifications</a></li>
|
|
</ul>
|
|
<b>XEP related:</b> <a href="http://www.xmpp.org/extensions/xep-0022.html">XEP-22</a>
|
|
<hr>
|
|
<div class="subheader"><a name="reqevnot">Requesting Event Notifications</a></div><p>
|
|
<b>Description</b><p>
|
|
|
|
In order to receive event notifications for a given message you first have to specify
|
|
which events are you interested in. Each message that you send has to request its own event
|
|
notifications. Therefore, every message that you send as part of a chat should request its own event
|
|
notifications.</p>
|
|
|
|
<b>Usage</b><p>
|
|
|
|
The class <i>MessageEventManager</i> provides an easy way for requesting event notifications. All you have to do is specify
|
|
the message that requires the event notifications and the events that you are interested in.
|
|
<p>Use the static method <i><b>MessageEventManager.addNotificationsRequests(Message message, boolean offline, boolean
|
|
delivered, boolean displayed, boolean composing)</b></i> for requesting event notifications.
|
|
</p>
|
|
|
|
<b>Example</b><p>
|
|
Below you can find an example that logs in a user to the server, creates a message, adds the requests
|
|
for notifications and sends the message.
|
|
<blockquote>
|
|
<pre> <font color="#3f7f5f">// Connect to the server and log in</font>
|
|
conn1 = new XMPPConnection(host);
|
|
conn1.login(server_user1, pass1);
|
|
|
|
<font color="#3f7f5f">// Create a chat with user2</font>
|
|
Chat chat1 = conn1.createChat(user2);
|
|
|
|
<font color="#3f7f5f">// Create a message to send</font>
|
|
Message msg = chat1.createMessage();
|
|
msg.setSubject(<font color="#0000FF">"Any subject you want"</font>);
|
|
msg.setBody(<font color="#0000FF">"An interesting body comes here..."</font>);
|
|
<font color="#3f7f5f">// Add to the message all the notifications requests (offline, delivered, displayed,</font>
|
|
<font color="#3f7f5f">// composing)</font>
|
|
MessageEventManager.addNotificationsRequests(msg, <font COLOR="#7f0055"><b>true</b></font>, <font COLOR="#7f0055"><b>true</b></font>, <font COLOR="#7f0055"><b>true</b></font>, <font COLOR="#7f0055"><b>true</b></font>);
|
|
|
|
<font color="#3f7f5f">// Send the message that contains the notifications request</font>
|
|
chat1.sendMessage(msg);
|
|
</pre>
|
|
</blockquote>
|
|
|
|
<hr>
|
|
|
|
<div class="subheader"><a name="lstevnotreq">Reacting to Event Notification Requests</a></div><p>
|
|
|
|
<b>Description</b><p>
|
|
|
|
You can receive notification requests for the following events: delivered, displayed, composing and offline. You
|
|
<b>must</b> listen for these requests and react accordingly.</p>
|
|
|
|
<b>Usage</b><p>
|
|
|
|
The general idea is to create a new <i>DefaultMessageEventRequestListener</i> that will listen to the event notifications
|
|
requests and react with custom logic. Then you will have to add the listener to the
|
|
<i>MessageEventManager</i> that works on
|
|
the desired <i>XMPPConnection</i>.
|
|
<p>Note that <i>DefaultMessageEventRequestListener</i> is a default implementation of the
|
|
<i>MessageEventRequestListener</i> interface.
|
|
The class <i>DefaultMessageEventRequestListener</i> automatically sends a delivered notification to the sender of the message
|
|
if the sender has requested to be notified when the message is delivered. If you decide to create a new class that
|
|
implements the <i>MessageEventRequestListener</i> interface, please remember to send the delivered notification.</p>
|
|
<ul>
|
|
<li>To create a new <i>MessageEventManager</i> use the <i><b>MessageEventManager(XMPPConnection)</b></i> constructor.
|
|
</li>
|
|
<li>To create an event notification requests listener create a subclass of <i><b>DefaultMessageEventRequestListener</b></i> or
|
|
create a class that implements the <i><b>MessageEventRequestListener</b></i> interface.
|
|
</li>
|
|
<li>To add a listener to the messageEventManager use the MessageEventManager's message
|
|
<i><b>addMessageEventRequestListener(MessageEventRequestListener)</b></i>.</li>
|
|
</ul></p>
|
|
|
|
<b>Example</b><p>
|
|
|
|
Below you can find an example that connects two users to the server. One user will create a message, add the requests
|
|
for notifications and will send the message to the other user. The other user will add a
|
|
<i>DefaultMessageEventRequestListener</i>
|
|
to a <i>MessageEventManager</i> that will listen and react to the event notification requested by the other user.
|
|
<blockquote>
|
|
<pre> <font color="#3f7f5f">// Connect to the server and log in the users</font>
|
|
conn1 = new XMPPTCPConnection(host);
|
|
conn1.login(server_user1, pass1);
|
|
conn2 = new XMPPTCPConnection(host);
|
|
conn2.login(server_user2, pass2);
|
|
|
|
<font color="#3f7f5f">// User2 creates a MessageEventManager</font>
|
|
MessageEventManager messageEventManager = new MessageEventManager(conn2);
|
|
<font color="#3f7f5f">// User2 adds the listener that will react to the event notifications requests</font>
|
|
messageEventManager.addMessageEventRequestListener(new DefaultMessageEventRequestListener() {
|
|
public void deliveredNotificationRequested(
|
|
String from,
|
|
String packetID,
|
|
MessageEventManager messageEventManager) {
|
|
super.deliveredNotificationRequested(from, packetID, messageEventManager);
|
|
<font color="#3f7f5f">// DefaultMessageEventRequestListener automatically responds that the message was delivered when receives this request</font>
|
|
System.out.println(<font color="#0000FF">"Delivered Notification Requested (" + from + ", " + packetID + ")"</font>);
|
|
}
|
|
|
|
public void displayedNotificationRequested(
|
|
String from,
|
|
String packetID,
|
|
MessageEventManager messageEventManager) {
|
|
super.displayedNotificationRequested(from, packetID, messageEventManager);
|
|
<font color="#3f7f5f">// Send to the message's sender that the message was displayed</font>
|
|
messageEventManager.sendDisplayedNotification(from, packetID);
|
|
}
|
|
|
|
public void composingNotificationRequested(
|
|
String from,
|
|
String packetID,
|
|
MessageEventManager messageEventManager) {
|
|
super.composingNotificationRequested(from, packetID, messageEventManager);
|
|
<font color="#3f7f5f">// Send to the message's sender that the message's receiver is composing a reply</font>
|
|
messageEventManager.sendComposingNotification(from, packetID);
|
|
}
|
|
|
|
public void offlineNotificationRequested(
|
|
String from,
|
|
String packetID,
|
|
MessageEventManager messageEventManager) {
|
|
super.offlineNotificationRequested(from, packetID, messageEventManager);
|
|
<font color="#3f7f5f">// The XMPP server should take care of this request. Do nothing.</font>
|
|
System.out.println(<font color="#0000FF">"Offline Notification Requested (" + from + ", " + packetID + ")"</font>);
|
|
}
|
|
});
|
|
|
|
<font color="#3f7f5f">// User1 creates a chat with user2</font>
|
|
Chat chat1 = conn1.createChat(user2);
|
|
|
|
<font color="#3f7f5f">// User1 creates a message to send to user2</font>
|
|
Message msg = chat1.createMessage();
|
|
msg.setSubject(<font color="#0000FF">"Any subject you want"</font>);
|
|
msg.setBody(<font color="#0000FF">"An interesting body comes here..."</font>);
|
|
<font color="#3f7f5f">// User1 adds to the message all the notifications requests (offline, delivered, displayed,</font>
|
|
<font color="#3f7f5f">// composing)</font>
|
|
MessageEventManager.addNotificationsRequests(msg, <font COLOR="#7f0055"><b>true</b></font>, <font COLOR="#7f0055"><b>true</b></font>, <font COLOR="#7f0055"><b>true</b></font>, <font COLOR="#7f0055"><b>true</b></font>);
|
|
|
|
<font color="#3f7f5f">// User1 sends the message that contains the notifications request</font>
|
|
chat1.sendMessage(msg);
|
|
Thread.sleep(500);
|
|
<font color="#3f7f5f">// User2 sends to the message's sender that the message's receiver cancelled composing a reply</font>
|
|
messageEventManager.sendCancelledNotification(user1, msg.getPacketID());
|
|
</pre>
|
|
</blockquote>
|
|
|
|
<hr>
|
|
|
|
<div class="subheader"><a name="lstevnot">Reacting to Event Notifications</a></div><p>
|
|
|
|
<b>Description</b><p>
|
|
|
|
Once you have requested for event notifications you will start to receive notifications of events. You can
|
|
receive notifications of the following events: delivered, displayed, composing, offline and cancelled. You
|
|
will probably want to react to some or all of these events.</p>
|
|
|
|
<b>Usage</b><p>
|
|
|
|
The general idea is to create a new <i>MessageEventNotificationListener</i> that will listen to the event notifications
|
|
and react with custom logic. Then you will have to add the listener to the <i>MessageEventManager</i> that works on
|
|
the desired <i>XMPPConnection</i>.
|
|
<ul>
|
|
<li>To create a new <i>MessageEventManager</i> use the <i><b>MessageEventManager(XMPPConnection)</b></i> constructor.
|
|
</li>
|
|
<li>To create an event notifications listener create a class that implements the <i><b>MessageEventNotificationListener</b></i>
|
|
interface.
|
|
</li>
|
|
<li>To add a listener to the messageEventManager use the MessageEventManager's message
|
|
<i><b>addMessageEventNotificationListener(MessageEventNotificationListener)</b></i>.</li>
|
|
</ul></p>
|
|
|
|
<b>Example</b><p>
|
|
Below you can find an example that logs in a user to the server, adds a <i>MessageEventNotificationListener</i>
|
|
to a <i>MessageEventManager</i> that will listen and react to the event notifications, creates a message, adds
|
|
the requests for notifications and sends the message.
|
|
<blockquote>
|
|
<pre> <font color="#3f7f5f">// Connect to the server and log in</font>
|
|
conn1 = new XMPPTCPConnection(host);
|
|
conn1.login(server_user1, pass1);
|
|
|
|
<font color="#3f7f5f">// Create a MessageEventManager</font>
|
|
MessageEventManager messageEventManager = new MessageEventManager(conn1);
|
|
<font color="#3f7f5f">// Add the listener that will react to the event notifications</font>
|
|
messageEventManager.addMessageEventNotificationListener(new MessageEventNotificationListener() {
|
|
public void deliveredNotification(String from, String packetID) {
|
|
System.out.println(<font color="#0000FF">"The message has been delivered (" + from + ", " + packetID + ")"</font>);
|
|
}
|
|
|
|
public void displayedNotification(String from, String packetID) {
|
|
System.out.println(<font color="#0000FF">"The message has been displayed (" + from + ", " + packetID + ")"</font>);
|
|
}
|
|
|
|
public void composingNotification(String from, String packetID) {
|
|
System.out.println(<font color="#0000FF">"The message's receiver is composing a reply (" + from + ", " + packetID + ")"</font>);
|
|
}
|
|
|
|
public void offlineNotification(String from, String packetID) {
|
|
System.out.println(<font color="#0000FF">"The message's receiver is offline (" + from + ", " + packetID + ")"</font>);
|
|
}
|
|
|
|
public void cancelledNotification(String from, String packetID) {
|
|
System.out.println(<font color="#0000FF">"The message's receiver cancelled composing a reply (" + from + ", " + packetID + ")"</font>);
|
|
}
|
|
});
|
|
|
|
<font color="#3f7f5f">// Create a chat with user2</font>
|
|
Chat chat1 = conn1.createChat(user2);
|
|
|
|
<font color="#3f7f5f">// Create a message to send</font>
|
|
Message msg = chat1.createMessage();
|
|
msg.setSubject(<font color="#0000FF">"Any subject you want"</font>);
|
|
msg.setBody(<font color="#0000FF">"An interesting body comes here..."</font>);
|
|
<font color="#3f7f5f">// Add to the message all the notifications requests (offline, delivered, displayed,</font>
|
|
<font color="#3f7f5f">// composing)</font>
|
|
MessageEventManager.addNotificationsRequests(msg, <font COLOR="#7f0055"><b>true</b></font>, <font COLOR="#7f0055"><b>true</b></font>, <font COLOR="#7f0055"><b>true</b></font>, <font COLOR="#7f0055"><b>true</b></font>);
|
|
|
|
<font color="#3f7f5f">// Send the message that contains the notifications request</font>
|
|
chat1.sendMessage(msg);
|
|
</pre>
|
|
</blockquote>
|
|
|
|
</body>
|
|
|
|
</html>
|