Make topics have proper dates.

res/com/dmdirc/ui/messages/format.yml

 ChannelGotTopicEvent:
   format: |
             * The topic for {{channel.name}} is '{{topic.topic}}'.
-            * Topic was set by {{user.nickname}} at {{topic.time}}.
+            * Topic was set by {{user.nickname}} at {{topic.date}}.
   colour: 3
 ChannelTopicChangeEvent:
   format: "* {{user.nickname}} has changed the topic to {{topic.topic}}."

src/com/dmdirc/Channel.java

             args.add(topic.getClient().flatMap(GroupChatUser::getUsername).orElse(""));
             args.add(topic.getClient().flatMap(GroupChatUser::getHostname).orElse(""));
             args.add(topic.getTopic());
-            args.add(topic.getTime() * 1000);
+            args.add(topic.getDate().getTime());
 
             return true;
         } else {

src/com/dmdirc/ChannelEventHandler.java

 
         final Topic topic = Topic.create(channel.getTopic(),
                 owner.getUser(getConnection().getUser(channel.getTopicSetter())).orElse(null),
-                channel.getTopicTime());
+                new Date(1000 * channel.getTopicTime()));
 
         if (event.isJoinTopic()) {
             if (Strings.isNullOrEmpty(channel.getTopic())) {

src/com/dmdirc/Topic.java

 
 import com.google.auto.value.AutoValue;
 
+import java.util.Date;
 import java.util.Optional;
 
 /**
     /** Topic client. */
     public abstract Optional<GroupChatUser> getClient();
     /** Topic time. */
-    public abstract long getTime();
+    public abstract Date getDate();
 
     public static Topic create(final String topic,
             final GroupChatUser groupChatUser,
-            final long time) {
-        return new AutoValue_Topic(topic, Optional.ofNullable(groupChatUser), time);
+            final Date date) {
+        return new AutoValue_Topic(topic, Optional.ofNullable(groupChatUser), date);
     }
 }

src/com/dmdirc/commandparser/commands/channel/ShowTopic.java

 import com.dmdirc.interfaces.GroupChatUser;
 import com.dmdirc.interfaces.WindowModel;
 
+import java.util.Date;
 import java.util.Optional;
 
 import javax.annotation.Nonnull;
                         user.flatMap(GroupChatUser::getUsername).orElse(""),
                         user.flatMap(GroupChatUser::getHostname).orElse(""),
                         topic.map(Topic::getTopic).orElse(""),
-                        1000 * topic.map(Topic::getTime).get(),
+                        topic.map(Topic::getDate).map(Date::getTime).get(),
                         channel.getName());
             } else {
                 sendLine(origin, args.isSilent(), "channelNoTopic", channel.getName());

src/com/dmdirc/ui/messages/EventPropertyManager.java

 
 import static com.dmdirc.util.LogUtils.USER_ERROR;
 
+/**
+ * Provides properties and functions used by an {@link EventFormatter}.
+ *
+ * <p>Properties are dyanamically supplied based on get methods within the class. For example, if
+ * channel objects have a 'getName()' method, then the name can be accessed as {{channel.name}}.
+ *
+ * <p>Functions are implemented as string transformations, and are defined in
+ * {@link #EventPropertyManager()}.
+ */
 @Singleton
 public class EventPropertyManager {
 

test/com/dmdirc/TopicTest.java

 
 import com.dmdirc.interfaces.GroupChatUser;
 
+import java.util.Date;
 import java.util.Optional;
 
 import org.junit.Test;
 
     @Test
     public void testGetClient() {
-        final Topic test = Topic.create("abc", user, 1);
+        final Topic test = Topic.create("abc", user, new Date());
         assertEquals(Optional.of(user), test.getClient());
     }
 
     @Test
     public void testGetTime() {
-        final Topic test = Topic.create("abc", user, 1);
-        assertEquals(1L, test.getTime());
+        final Date date = new Date(123394432);
+        final Topic test = Topic.create("abc", user, date);
+        assertEquals(date, test.getDate());
     }
 
     @Test
     public void testGetTopic() {
-        final Topic test = Topic.create("abc", user, 1);
+        final Topic test = Topic.create("abc", user, new Date());
         assertEquals("abc", test.getTopic());
     }
 

test/com/dmdirc/ui/messages/EventFormatterTest.java

         messageEvent = new ChannelMessageEvent(channel, null, null);
 
         when(templateProvider.getFormat(ChannelMessageEvent.class))
-                .thenReturn(Optional.ofNullable(
+                .thenReturn(Optional.of(
                         EventFormat.create("Template {{channel}} meep", Optional.empty())));
         when(propertyManager.getProperty(messageEvent, ChannelMessageEvent.class, "channel"))
                 .thenReturn(Optional.of("MONKEY"));
         messageEvent = new ChannelMessageEvent(channel, null, null);
 
         when(templateProvider.getFormat(ChannelMessageEvent.class))
-                .thenReturn(Optional.ofNullable(
+                .thenReturn(Optional.of(
                         EventFormat.create("Template {{channel|lowercase}} meep",
                                 Optional.empty())));
         when(propertyManager.getProperty(messageEvent, ChannelMessageEvent.class, "channel"))
         messageEvent = new ChannelMessageEvent(channel, null, "{{channel}}");
 
         when(templateProvider.getFormat(ChannelMessageEvent.class))
-                .thenReturn(Optional.ofNullable(
+                .thenReturn(Optional.of(
                         EventFormat.create("Template {{message}} meep", Optional.empty())));
         when(propertyManager.getProperty(messageEvent, ChannelMessageEvent.class, "message"))
                 .thenReturn(Optional.of("{{channel}}"));