--- a/Implab.Fx/AnimationHelpers.cs	Tue Sep 17 04:27:30 2013 +0400
+++ b/Implab.Fx/AnimationHelpers.cs	Tue Sep 24 03:31:24 2013 +0400
@@ -9,7 +9,7 @@
 {
     public static class AnimationHelpers
     {
-        public static Animation<TTarget> AnimateProperty<TTarget,TVal>(this Animation<TTarget> animation, Action<TTarget,TVal> setter, Func<TTarget,TVal> getter, TVal newValue, Func<TVal,TVal,int,int,TVal> fx) where TTarget: class
+        public static Animation<TTarget> AnimateProperty<TTarget, TVal>(this Animation<TTarget> animation, Action<TTarget, TVal> setter, Func<TTarget, TVal> getter, TVal newValue, Func<TVal, TVal, int, int, TVal> fx) where TTarget : class
         {
             if (animation == null)
                 throw new ArgumentNullException("animation");
@@ -25,9 +25,9 @@
             return animation;
         }
 
-        public static Animation<Form> AnimateTransparency(this Form ctl, float newValue)
+        public static Animation<T> AnimateTransparency<T>(this T ctl, float newValue) where T : Form
         {
-            var anim = new Animation<Form>(ctl);
+            var anim = new Animation<T>(ctl);
 
             anim.AnimateProperty(
                 (target, value) => target.Opacity = value,
@@ -37,5 +37,53 @@
             );
             return anim;
         }
+
+        public static Promise<T> CloseFadeOut<T>(this T ctl) where T : Form
+        {
+            var anim = ctl.AnimateTransparency(0);
+
+            return anim.Play().DispatchToControl(ctl).Then(frm => frm.Close());
+        }
+
+        public static Promise<T> OverlayFadeIn<T>(this Form that, T overlay) where T : Form
+        {
+            if (that == null)
+                throw new ArgumentNullException("that");
+            if (overlay == null)
+                throw new ArgumentNullException("overlay");
+
+            // setup overlay
+            overlay.Opacity = 0;
+            overlay.FormBorderStyle = FormBorderStyle.None;
+            overlay.ShowInTaskbar = false;
+
+            that.AddOwnedForm(overlay);
+
+            EventHandler handler = (object sender, EventArgs args) =>
+            {
+                overlay.Bounds = that.RectangleToScreen(that.ClientRectangle);
+            };
+
+            // attach handlers
+            that.Move += handler;
+            that.Resize += handler;
+            that.Shown += handler;
+
+            // remove handlers to release overlay
+            overlay.FormClosed += (sender, args) =>
+            {
+                that.Move -= handler;
+                that.Resize -= handler;
+                that.Shown -= handler;
+            };
+
+            overlay.Show(that);
+            overlay.Bounds = that.RectangleToScreen(that.ClientRectangle);
+
+            return overlay
+                .AnimateTransparency(1)
+                .Play()
+                .DispatchToControl(overlay);
+        }
     }
 }