Add timestamp plugin

runelite-client/src/main/java/net/runelite/client/chat/ChatMessageManager.java

@@ -564,6 +564,8 @@ public class ChatMessageManager
 
 		// Update the message with RuneLite additions
 		line.setRuneLiteFormatMessage(message.getRuneLiteFormattedMessage());
+		line.setTimestamp(message.getTimestamp());
+
 		update(line);
 	}
 

runelite-client/src/main/java/net/runelite/client/chat/QueuedMessage.java

@@ -37,4 +37,5 @@ public class QueuedMessage
 	private String name;
 	private String sender;
 	private String runeLiteFormattedMessage;
+	private int timestamp;
 }

runelite-client/src/main/java/net/runelite/client/config/ChatColorConfig.java

@@ -509,4 +509,22 @@ public interface ChatColorConfig extends Config
 		description = "Color of Friend Usernames in Public Chat (transparent)"
 	)
 	Color transparentPublicFriendUsernames();
+
+	//Plugin specific chat colours
+
+	@ConfigItem(
+		position = 88,
+		keyName = "opaqueTimestamp",
+		name = "Timestamps (opaque)",
+		description = "Colour of Timestamps from the Timestamps plugin (opaque)"
+	)
+	Color opaqueTimestamp();
+
+	@ConfigItem(
+		position = 89,
+		keyName = "transparentTimestamp",
+		name = "Timestamps (transparent)",
+		description = "Colour of Timestamps from the Timestamps plugin (transparent)"
+	)
+	Color transparentTimestamp();
 }

runelite-client/src/main/java/net/runelite/client/plugins/chathistory/ChatHistoryPlugin.java

@@ -100,6 +100,7 @@ public class ChatHistoryPlugin extends Plugin
 				.sender(message.getSender())
 				.value(nbsp(message.getValue()))
 				.runeLiteFormattedMessage(nbsp(message.getMessageNode().getRuneLiteFormatMessage()))
+				.timestamp(message.getTimestamp())
 				.build();
 
 			if (!messageQueue.contains(queuedMessage))

runelite-client/src/main/java/net/runelite/client/plugins/timestamp/TimestampPlugin.java

@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2018, Magic fTail
+ * Copyright (c) 2018, Adam <Adam@sigterm.info>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package net.runelite.client.plugins.timestamp;
+
+import java.awt.Color;
+import java.time.Instant;
+import java.time.ZoneId;
+import java.time.ZonedDateTime;
+import java.time.temporal.ChronoField;
+import javax.inject.Inject;
+import net.runelite.api.Client;
+import net.runelite.api.MessageNode;
+import net.runelite.api.Varbits;
+import net.runelite.api.events.ScriptCallbackEvent;
+import net.runelite.client.config.ChatColorConfig;
+import net.runelite.client.eventbus.Subscribe;
+import net.runelite.client.plugins.Plugin;
+import net.runelite.client.plugins.PluginDescriptor;
+import net.runelite.client.util.ColorUtil;
+
+@PluginDescriptor(
+	name = "Chat Timestamps",
+	description = "Add timestamps to chat messages",
+	tags = {"timestamp"},
+	enabledByDefault = false
+)
+public class TimestampPlugin extends Plugin
+{
+	@Inject
+	private Client client;
+
+	@Inject
+	private ChatColorConfig chatColorConfig;
+
+	@Subscribe
+	public void onScriptCallbackEvent(ScriptCallbackEvent event)
+	{
+		if (!event.getEventName().equals("addTimestamp"))
+		{
+			return;
+		}
+
+		int[] intStack = client.getIntStack();
+		int intStackSize = client.getIntStackSize();
+
+		String[] stringStack = client.getStringStack();
+		int stringStackSize = client.getStringStackSize();
+
+		int messageId = intStack[intStackSize - 1];
+
+		MessageNode messageNode = (MessageNode) client.getMessages().get(messageId);
+
+		final ZonedDateTime time = ZonedDateTime.ofInstant(
+			Instant.ofEpochSecond(messageNode.getTimestamp()), ZoneId.systemDefault());
+
+		final String dateFormat = time.get(ChronoField.HOUR_OF_DAY) + ":" +
+			String.format("%02d", time.get(ChronoField.MINUTE_OF_HOUR));
+
+		String timestamp = "[" + dateFormat + "]";
+
+		Color timestampColour = getTimestampColour();
+		if (timestampColour != null)
+		{
+			timestamp = ColorUtil.wrapWithColorTag(timestamp, timestampColour);
+		}
+
+		stringStack[stringStackSize - 1] = timestamp;
+	}
+
+	private Color getTimestampColour()
+	{
+		boolean isChatboxTransparent = client.isResized() && client.getVar(Varbits.TRANSPARENT_CHATBOX) == 1;
+
+		return isChatboxTransparent ? chatColorConfig.transparentTimestamp() : chatColorConfig.opaqueTimestamp();
+	}
+}