[smuxi: 1/7] Frontend-GNOME: Sync the marker line's position with the remote engine.

[Mirco M. M. Bauer <mmmbauer src gnome org>]

commit 3f72df04981847d4b4cd6380eaa26fd4ec916935
Author: Sebastian Poeplau <sebastian poeplau googlemail com>
Date:   Sun Feb 1 15:04:47 2015 +0100

    Frontend-GNOME: Sync the marker line's position with the remote engine.

 src/Engine/Chats/ChatModel.cs              |    1 +
 src/Frontend-GNOME/MainWindow.cs           |    2 +-
 src/Frontend-GNOME/Notebook.cs             |    2 +-
 src/Frontend-GNOME/Views/Chats/ChatView.cs |   32 +++++++++++++++++++++++++--
 4 files changed, 32 insertions(+), 5 deletions(-)
---
diff --git a/src/Engine/Chats/ChatModel.cs b/src/Engine/Chats/ChatModel.cs
index 962fd55..e5afbcf 100644
--- a/src/Engine/Chats/ChatModel.cs
+++ b/src/Engine/Chats/ChatModel.cs
@@ -47,6 +47,7 @@ namespace Smuxi.Engine
         public  int                  Position { get; set; }
         public  IMessageBuffer       MessageBuffer { get; private set; }
         public  int                  MessagesSyncCount { get; set; }
+        public  DateTime             LastSeenMessage { get; set; }
 
         public string ID {
             get {
diff --git a/src/Frontend-GNOME/MainWindow.cs b/src/Frontend-GNOME/MainWindow.cs
index 4b87274..4fa4d64 100644
--- a/src/Frontend-GNOME/MainWindow.cs
+++ b/src/Frontend-GNOME/MainWindow.cs
@@ -480,7 +480,7 @@ namespace Smuxi.Frontend.Gnome
                     return;
                 }
 
-                chatView.OutputMessageTextView.UpdateMarkerline();
+                chatView.UpdateLastSeenMessage();
             } catch (Exception ex) {
                 Frontend.ShowException(this, ex);
             }
diff --git a/src/Frontend-GNOME/Notebook.cs b/src/Frontend-GNOME/Notebook.cs
index 063c506..1df0e48 100644
--- a/src/Frontend-GNOME/Notebook.cs
+++ b/src/Frontend-GNOME/Notebook.cs
@@ -199,7 +199,7 @@ namespace Smuxi.Frontend.Gnome
             }
 
             var chatView = CurrentChatView;
-            chatView.OutputMessageTextView.UpdateMarkerline();
+            chatView.UpdateLastSeenMessage();
         }
 
         protected virtual void OnSwitchPage(object sender, Gtk.SwitchPageArgs e)
diff --git a/src/Frontend-GNOME/Views/Chats/ChatView.cs b/src/Frontend-GNOME/Views/Chats/ChatView.cs
index bb0fe77..48fa094 100644
--- a/src/Frontend-GNOME/Views/Chats/ChatView.cs
+++ b/src/Frontend-GNOME/Views/Chats/ChatView.cs
@@ -54,6 +54,7 @@ namespace Smuxi.Frontend.Gnome
         private   MessageTextView    _OutputMessageTextView;
         private   ThemeSettings      _ThemeSettings;
         private   TaskQueue          _LastSeenHighlightQueue;
+        public    DateTime           SyncedLastSeenMessage { get; private set; }
         public    DateTime           SyncedLastSeenHighlight { get; private set; }
         IList<MessageModel>          SyncedMessages { get; set; }
         protected string             SyncedName { get; set; }
@@ -519,6 +520,11 @@ namespace Smuxi.Frontend.Gnome
 
             // REMOTING CALL
             SyncedLastSeenHighlight = _ChatModel.LastSeenHighlight;
+            
+            if (Frontend.EngineVersion >= new Version(0, 12)) {
+                // REMOTING CALL
+                SyncedLastSeenMessage = _ChatModel.LastSeenMessage;
+            }
 
             DateTime start, stop;
             start = DateTime.UtcNow;
@@ -556,6 +562,10 @@ namespace Smuxi.Frontend.Gnome
                     // GTK+ in between for blocking the GUI thread less
                     foreach (MessageModel msg in SyncedMessages) {
                         AddMessage(msg);
+                        if (msg.TimeStamp <= SyncedLastSeenMessage) {
+                            // let the user know at which position new messages start
+                            _OutputMessageTextView.UpdateMarkerline();
+                        }
                     }
                 }
             }
@@ -567,9 +577,6 @@ namespace Smuxi.Frontend.Gnome
                 HasEvent = false;
             }
 
-            // let the user know at which position new messages start
-            _OutputMessageTextView.UpdateMarkerline();
-
             // reset tab icon to normal
             TabImage.Pixbuf = DefaultTabImage.Pixbuf;
             OnStatusChanged(EventArgs.Empty);
@@ -578,6 +585,25 @@ namespace Smuxi.Frontend.Gnome
             _IsSynced = true;
         }
         
+        public virtual void UpdateLastSeenMessage()
+        {
+            _OutputMessageTextView.UpdateMarkerline();
+            
+            if (Frontend.EngineVersion >= new Version(0, 12)) {
+                var lastSeenMessage = _OutputMessageTextView.LastMessage;
+                if (lastSeenMessage != null) {
+                    ThreadPool.QueueUserWorkItem(delegate {
+                        try {
+                            // REMOTING CALL
+                            _ChatModel.LastSeenMessage = lastSeenMessage.TimeStamp;
+                        } catch (Exception ex) {
+                            Frontend.ShowException(ex);
+                        }
+                    });
+                }
+            }
+        }
+        
         public virtual void AddMessage(MessageModel msg)
         {
             switch (msg.MessageType) {