Remove redundant signal

src/AccountManager.vala

@@ -2,7 +2,7 @@ using GLib;
 
 public class Tootle.AccountManager : Object{
 
-    public abstract signal void changed_current(Account account);
+    public abstract signal void changed_current(Account? account);
     public abstract signal void added(Account account);
     public abstract signal void removed(Account account);
 
@@ -89,7 +89,7 @@ public class Tootle.AccountManager : Object{
                 var access_token = root.get_string_member ("access_token");
                 settings.access_token = access_token;
                 debug ("Got access token");
-                Tootle.app.state_updated ();
+                update_current ();
             }
             catch (GLib.Error e) {
                 warning ("Can't get access token");
@@ -115,4 +115,9 @@ public class Tootle.AccountManager : Object{
         return msg;
     }
     
+    public void logout (){
+        current = null;
+        changed_current ();
+    }
+
 }

src/Application.vala

@@ -8,7 +8,6 @@ namespace Tootle{
 
     public class Application : Granite.Application {
     
-        public abstract signal void state_updated();
         public abstract signal void toast(string title);
         public abstract signal void error(string error);
     
@@ -32,6 +31,11 @@ namespace Tootle{
         
         protected override void activate () {
             window.present ();
+            var has_token = AccountManager.instance.has_access_token();
+            if(has_token)
+                AccountManager.instance.update_current ();
+            else
+                AccountManager.instance.changed_current (null);
         }
     
     }

src/MainWindow.vala

@@ -22,8 +22,7 @@ public class Tootle.MainWindow: Gtk.Window {
         set_titlebar (header);
         window_position = WindowPosition.CENTER;
         
-        Tootle.app.state_updated.connect(on_state_update);
-        on_state_update ();
+        AccountManager.instance.changed_current.connect(on_account_changed);
     }
 
     construct {
@@ -72,19 +71,16 @@ public class Tootle.MainWindow: Gtk.Window {
         NetManager.instance.finished.connect (() => spinner.hide ());
     }
     
-    private void on_state_update(){
+    private void on_account_changed(Account? account){
         mode.hide ();
         button_toot.hide ();
         accounts.hide ();
         stack.forall (widget => stack.remove (widget));
     
-        var has_token = AccountManager.instance.has_access_token();
-        if(!has_token)
+        if(account == null)
             show_setup_views ();
         else
             show_main_views ();
-            
-        AccountManager.instance.update_current ();
     }
     
     private void show_setup_views (){

src/Views/HomeView.vala

@@ -28,7 +28,8 @@ public class Tootle.HomeView : Tootle.AbstractView {
         this.pars = pars;
         
         show_all();
-        request_update ();
+        
+        AccountManager.instance.changed_current.connect(on_account_changed);
         
         // var s = new Status(1);
         // s.content = "Test content, wow!";
@@ -49,7 +50,10 @@ public class Tootle.HomeView : Tootle.AbstractView {
         view.pack_end (widget, false, false, 0);
     }
     
-    public virtual Soup.Message request_update (){
+    public virtual void on_account_changed (Account? account){
+        if(account == null)
+            return;
+        
         var url = Settings.instance.instance_url;
         url += "api/v1/timelines/";
         url += this.timeline;
@@ -71,7 +75,6 @@ public class Tootle.HomeView : Tootle.AbstractView {
                 warning (e.message);
             }
         });
-        return msg;
     }
 
 }

src/Widgets/AccountsButton.vala

@@ -35,6 +35,7 @@ public class Tootle.AccountsButton : Gtk.MenuButton{
         show_all ();
         
         AccountManager.instance.changed_current.connect (account => {
+            if (account != null)
                 CacheManager.instance.load_avatar (account.avatar, avatar, 24);
         });
     }