player indicators: decorate player name in trade window

Co-authored-by: Vandager <66982484+Vandager@users.noreply.github.com>

runelite-api/src/main/java/net/runelite/api/ScriptID.java

@@ -408,4 +408,10 @@ public final class ScriptID
 
 	@ScriptArguments(integer = 6)
 	public static final int INVENTORY_DRAWITEM = 6011;
+
+	/**
+	 * Initializes the trade interface
+	 */
+	@ScriptArguments(integer = 6)
+	public static final int TRADE_MAIN_INIT = 755;
 }

runelite-api/src/main/java/net/runelite/api/widgets/WidgetID.java

@@ -174,6 +174,7 @@ public final class WidgetID
 	public static final int GROUP_STORAGE_INVENTORY_GROUP_ID = 725;
 	public static final int GROUP_STORAGE_GROUP_ID = 724;
 	public static final int WILDERNESS_LOOT_CHEST = 742;
+	public static final int TRADE_WINDOW_GROUP_ID = 335;
 
 	static class WorldMap
 	{
@@ -936,4 +937,9 @@ public final class WidgetID
 		static final int HEADER = 1;
 		static final int MEMBERS = 6;
 	}
+
+	static class Trade
+	{
+		static final int HEADER = 31;
+	}
 }

runelite-api/src/main/java/net/runelite/api/widgets/WidgetInfo.java

@@ -561,6 +561,8 @@ public enum WidgetInfo
 	CLAN_GUEST_MEMBER_LIST(WidgetID.CLAN_GUEST_GROUP_ID, WidgetID.ClanGuest.MEMBERS),
 
 	POH_TREASURE_CHEST_INVENTORY_CONTAINER(WidgetID.POH_TREASURE_CHEST_INVENTORY_GROUP_ID, 0),
+
+	TRADE_WINDOW_HEADER(WidgetID.TRADE_WINDOW_GROUP_ID, WidgetID.Trade.HEADER),
 	;
 
 	private final int groupId;

runelite-client/src/main/java/net/runelite/client/plugins/playerindicators/PlayerIndicatorsPlugin.java

@@ -42,12 +42,17 @@ import static net.runelite.api.MenuAction.PLAYER_SEVENTH_OPTION;
 import static net.runelite.api.MenuAction.PLAYER_SIXTH_OPTION;
 import static net.runelite.api.MenuAction.PLAYER_THIRD_OPTION;
 import static net.runelite.api.MenuAction.RUNELITE_PLAYER;
-import static net.runelite.api.MenuAction.WIDGET_TARGET_ON_PLAYER;
 import static net.runelite.api.MenuAction.WALK;
+import static net.runelite.api.MenuAction.WIDGET_TARGET_ON_PLAYER;
 import net.runelite.api.MenuEntry;
 import net.runelite.api.Player;
+import net.runelite.api.ScriptID;
 import net.runelite.api.clan.ClanTitle;
 import net.runelite.api.events.ClientTick;
+import net.runelite.api.events.ScriptPostFired;
+import net.runelite.api.widgets.Widget;
+import net.runelite.api.widgets.WidgetInfo;
+import net.runelite.client.callback.ClientThread;
 import net.runelite.client.config.ConfigManager;
 import net.runelite.client.eventbus.Subscribe;
 import net.runelite.client.game.ChatIconManager;
@@ -63,6 +68,8 @@ import net.runelite.client.util.ColorUtil;
 )
 public class PlayerIndicatorsPlugin extends Plugin
 {
+	private static final String TRADING_WITH_TEXT = "Trading with: ";
+
 	@Inject
 	private OverlayManager overlayManager;
 
@@ -87,6 +94,9 @@ public class PlayerIndicatorsPlugin extends Plugin
 	@Inject
 	private ChatIconManager chatIconManager;
 
+	@Inject
+	private ClientThread clientThread;
+
 	@Provides
 	PlayerIndicatorsConfig provideConfig(ConfigManager configManager)
 	{
@@ -249,6 +259,44 @@ public class PlayerIndicatorsPlugin extends Plugin
 		return newTarget;
 	}
 
+	@Subscribe
+	public void onScriptPostFired(ScriptPostFired event)
+	{
+		if (event.getScriptId() == ScriptID.TRADE_MAIN_INIT)
+		{
+			clientThread.invokeLater(() ->
+			{
+				Widget tradeTitle = client.getWidget(WidgetInfo.TRADE_WINDOW_HEADER);
+				String header = tradeTitle.getText();
+				String playerName = header.substring(TRADING_WITH_TEXT.length());
+
+				Player targetPlayer = findPlayer(playerName);
+				if (targetPlayer == null)
+				{
+					return;
+				}
+
+				Decorations playerColor = getDecorations(targetPlayer);
+				if (playerColor != null)
+				{
+					tradeTitle.setText(TRADING_WITH_TEXT + ColorUtil.wrapWithColorTag(playerName, playerColor.color));
+				}
+			});
+		}
+	}
+
+	private Player findPlayer(String name)
+	{
+		for (Player player : client.getPlayers())
+		{
+			if (player.getName().equals(name))
+			{
+				return player;
+			}
+		}
+		return null;
+	}
+
 	@Value
 	private static class Decorations
 	{