2 files changed, 31 insertions, 2 deletions
diff --git a/libdino/src/plugin/interfaces.vala b/libdino/src/plugin/interfaces.vala
index 705cdfe1..178ca1ab 100644
--- a/libdino/src/plugin/interfaces.vala
+++ b/libdino/src/plugin/interfaces.vala
@@ -53,4 +53,14 @@ public class ContactDetails : Object {
     public signal void add(string category, string label, string desc, Widget widget);
 }
 
-}
-\ No newline at end of file
+public abstract class ConversationTitlebarEntry : Object {
+    public abstract string id { get; }
+    public abstract double order { get; }
+    public abstract ConversationTitlebarWidget get_widget();
+}
+
+public interface ConversationTitlebarWidget : Gtk.Widget {
+    public abstract void set_conversation(Conversation conversation);
+}
+
+}
diff --git a/libdino/src/plugin/registry.vala b/libdino/src/plugin/registry.vala
index e1ba605d..01d18d5f 100644
--- a/libdino/src/plugin/registry.vala
+++ b/libdino/src/plugin/registry.vala
@@ -6,6 +6,15 @@ public class Registry {
     internal ArrayList<EncryptionListEntry> encryption_list_entries = new ArrayList<EncryptionListEntry>();
     internal ArrayList<AccountSettingsEntry> account_settings_entries = new ArrayList<AccountSettingsEntry>();
     internal ArrayList<ContactDetailsProvider> contact_details_entries = new ArrayList<ContactDetailsProvider>();
+    internal Gee.Collection<ConversationTitlebarEntry> conversation_titlebar_entries = new Gee.TreeSet<ConversationTitlebarEntry>((a, b) => {
+        if (a.order < b.order) {
+            return -1;
+        } else if (a.order > b.order) {
+            return 1;
+        } else {
+            return 0;
+        }
+    });
 
     public bool register_encryption_list_entry(EncryptionListEntry entry) {
         lock(encryption_list_entries) {
@@ -39,6 +48,16 @@ public class Registry {
             return true;
         }
     }
+
+    public bool register_contact_titlebar_entry(ConversationTitlebarEntry entry) {
+        lock(conversation_titlebar_entries) {
+            foreach(ConversationTitlebarEntry e in conversation_titlebar_entries) {
+                if (e.id == entry.id) return false;
+            }
+            conversation_titlebar_entries.add(entry);
+            return true;
+        }
+    }
 }
 
-}
-\ No newline at end of file
+}