Refactor ConversationAdapter and its ConversationItems

briar-android/src/org/briarproject/android/contact/ConversationInItem.java

@@ -0,0 +1,31 @@
+package org.briarproject.android.contact;
+
+import org.briarproject.api.nullsafety.NotNullByDefault;
+import org.briarproject.api.sync.GroupId;
+import org.briarproject.api.sync.MessageId;
+import org.jetbrains.annotations.Nullable;
+
+import javax.annotation.concurrent.NotThreadSafe;
+
+@NotThreadSafe
+@NotNullByDefault
+abstract class ConversationInItem extends ConversationItem {
+
+	private boolean read;
+
+	ConversationInItem(MessageId id, GroupId groupId, @Nullable String text,
+			long time, boolean read) {
+		super(id, groupId, text, time);
+
+		this.read = read;
+	}
+
+	public boolean isRead() {
+		return read;
+	}
+
+	public void setRead(boolean read) {
+		this.read = read;
+	}
+
+}