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Change-Id: I49ce97136c17173c4ae3965c694af6e7bc49897d

1 files changed, 198 insertions, 0 deletions

diff --git a/src/org/jivesoftware/smackx/packet/Time.java b/src/org/jivesoftware/smackx/packet/Time.java
new file mode 100644
index 0000000..5294e77
--- /dev/null
+++ b/src/org/jivesoftware/smackx/packet/Time.java
@@ -0,0 +1,198 @@
+/**
+ * $RCSfile$
+ * $Revision$
+ * $Date$
+ *
+ * Copyright 2003-2007 Jive Software.
+ *
+ * All rights reserved. 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 org.jivesoftware.smackx.packet;
+
+import org.jivesoftware.smack.packet.IQ;
+
+import java.text.DateFormat;
+import java.text.SimpleDateFormat;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.TimeZone;
+
+/**
+ * A Time IQ packet, which is used by XMPP clients to exchange their respective local
+ * times. Clients that wish to fully support the entitity time protocol should register
+ * a PacketListener for incoming time requests that then respond with the local time.
+ * This class can be used to request the time from other clients, such as in the
+ * following code snippet:
+ *
+ * <pre>
+ * // Request the time from a remote user.
+ * Time timeRequest = new Time();
+ * timeRequest.setType(IQ.Type.GET);
+ * timeRequest.setTo(someUser@example.com/resource);
+ *
+ * // Create a packet collector to listen for a response.
+ * PacketCollector collector = con.createPacketCollector(
+ *                new PacketIDFilter(timeRequest.getPacketID()));
+ *
+ * con.sendPacket(timeRequest);
+ *
+ * // Wait up to 5 seconds for a result.
+ * IQ result = (IQ)collector.nextResult(5000);
+ * if (result != null && result.getType() == IQ.Type.RESULT) {
+ *     Time timeResult = (Time)result;
+ *     // Do something with result...
+ * }</pre><p>
+ *
+ * Warning: this is an non-standard protocol documented by
+ * <a href="http://www.xmpp.org/extensions/xep-0090.html">XEP-0090</a>. Because this is a
+ * non-standard protocol, it is subject to change.
+ *
+ * @author Matt Tucker
+ */
+public class Time extends IQ {
+
+    private static SimpleDateFormat utcFormat = new SimpleDateFormat("yyyyMMdd'T'HH:mm:ss");
+    private static DateFormat displayFormat = DateFormat.getDateTimeInstance();
+
+    private String utc = null;
+    private String tz = null;
+    private String display = null;
+
+    /**
+     * Creates a new Time instance with empty values for all fields.
+     */
+    public Time() {
+        
+    }
+
+    /**
+     * Creates a new Time instance using the specified calendar instance as
+     * the time value to send.
+     *
+     * @param cal the time value.
+     */
+    public Time(Calendar cal) {
+        TimeZone timeZone = cal.getTimeZone();
+        tz = cal.getTimeZone().getID();
+        display = displayFormat.format(cal.getTime());
+        // Convert local time to the UTC time.
+        utc = utcFormat.format(new Date(
+                cal.getTimeInMillis() - timeZone.getOffset(cal.getTimeInMillis())));
+    }
+
+    /**
+     * Returns the local time or <tt>null</tt> if the time hasn't been set.
+     *
+     * @return the lcocal time.
+     */
+    public Date getTime() {
+        if (utc == null) {
+            return null;
+        }
+        Date date = null;
+        try {
+            Calendar cal = Calendar.getInstance();
+            // Convert the UTC time to local time.
+            cal.setTime(new Date(utcFormat.parse(utc).getTime() +
+                    cal.getTimeZone().getOffset(cal.getTimeInMillis())));
+            date = cal.getTime();
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+        }
+        return date;
+    }
+
+    /**
+     * Sets the time using the local time.
+     *
+     * @param time the current local time.
+     */
+    public void setTime(Date time) {
+        // Convert local time to UTC time.
+        utc = utcFormat.format(new Date(
+                time.getTime() - TimeZone.getDefault().getOffset(time.getTime())));
+    }
+
+    /**
+     * Returns the time as a UTC formatted String using the format CCYYMMDDThh:mm:ss.
+     *
+     * @return the time as a UTC formatted String.
+     */
+    public String getUtc() {
+        return utc;
+    }
+
+    /**
+     * Sets the time using UTC formatted String in the format CCYYMMDDThh:mm:ss.
+     *
+     * @param utc the time using a formatted String.
+     */
+    public void setUtc(String utc) {
+        this.utc = utc;
+
+    }
+
+    /**
+     * Returns the time zone.
+     *
+     * @return the time zone.
+     */
+    public String getTz() {
+        return tz;
+    }
+
+    /**
+     * Sets the time zone.
+     *
+     * @param tz the time zone.
+     */
+    public void setTz(String tz) {
+        this.tz = tz;
+    }
+
+    /**
+     * Returns the local (non-utc) time in human-friendly format.
+     *
+     * @return the local time in human-friendly format.
+     */
+    public String getDisplay() {
+        return display;
+    }
+
+    /**
+     * Sets the local time in human-friendly format.
+     *
+     * @param display the local time in human-friendly format.
+     */
+    public void setDisplay(String display) {
+        this.display = display;
+    }
+
+    public String getChildElementXML() {
+        StringBuilder buf = new StringBuilder();
+        buf.append("<query xmlns=\"jabber:iq:time\">");
+        if (utc != null) {
+            buf.append("<utc>").append(utc).append("</utc>");
+        }
+        if (tz != null) {
+            buf.append("<tz>").append(tz).append("</tz>");
+        }
+        if (display != null) {
+            buf.append("<display>").append(display).append("</display>");
+        }
+        buf.append("</query>");
+        return buf.toString();
+    }
+}
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