api: add method to remove MessageNodes

Co-authored-by: trimbe <benno.tremback@gmail.com>

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

@@ -44,4 +44,11 @@ public interface ChatLineBuffer
 	 * @return the length
 	 */
 	int getLength();
+
+	/**
+	 * Removes a message node
+	 *
+	 * @param node the {@link MessageNode} to remove
+	 */
+	void removeMessageNode(MessageNode node);
 }

runelite-mixins/src/main/java/net/runelite/mixins/RSChatLineBufferMixin.java

@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2018, trimbe <github.com/trimbe>
+ * 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.mixins;
+
+import net.runelite.api.MessageNode;
+import net.runelite.api.mixins.Inject;
+import net.runelite.api.mixins.Mixin;
+import net.runelite.rs.api.RSCacheableNode;
+import net.runelite.rs.api.RSChatLineBuffer;
+
+@Mixin(RSChatLineBuffer.class)
+public abstract class RSChatLineBufferMixin implements RSChatLineBuffer
+{
+	@Inject
+	@Override
+	public void removeMessageNode(MessageNode node)
+	{
+		MessageNode[] lines = getLines();
+		final int length = getLength();
+		int found = -1;
+
+		// Find the index of the node
+		for (int idx = 0; idx < length; idx++)
+		{
+			if (lines[idx] == node)
+			{
+				found = idx;
+				break;
+			}
+		}
+
+		if (found == -1)
+		{
+			return;
+		}
+
+		// Shift down all other messages
+		for (int i = found; i < length - 1; i++)
+		{
+			lines[i] = lines[i + 1];
+		}
+		lines[length - 1] = null;
+		setLength(length - 1);
+
+		RSCacheableNode rsCacheableNode = (RSCacheableNode) node;
+		rsCacheableNode.unlink();
+		rsCacheableNode.unlinkDual();
+	}
+}

runescape-api/src/main/java/net/runelite/rs/api/RSCacheableNode.java

@@ -24,6 +24,10 @@
  */
 package net.runelite.rs.api;
 
+import net.runelite.mapping.Import;
+
 public interface RSCacheableNode extends RSNode
 {
+	@Import("unlinkDual")
+	void unlinkDual();
 }

runescape-api/src/main/java/net/runelite/rs/api/RSChatLineBuffer.java

@@ -39,4 +39,7 @@ public interface RSChatLineBuffer extends ChatLineBuffer
 	@Import("length")
 	@Override
 	int getLength();
+
+	@Import("length")
+	void setLength(int length);
 }