Move HintProxy into separate file

Author: l1pton17

MaterialDesignThemes.Wpf/IHintProxy.cs

@@ -0,0 +1,25 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Controls;
+
+namespace MaterialDesignThemes.Wpf
+{
+    /// <summary>
+    /// This interface is the adapter from UiControl (like <see cref="TextBox"/>, <see cref="ComboBox"/> and others) to <see cref="SmartHint"/>
+    /// <para/>
+    /// You should implement this interface in order to use SmartHint for your own control.
+    /// </summary>
+    public interface IHintProxy : IDisposable
+    {
+        string Text { get; }
+        bool IsLoaded { get; }
+        bool IsVisible { get; }
+
+        event EventHandler TextChanged;
+        event EventHandler IsVisibleChanged;
+        event EventHandler Loaded;
+    }
+}

MaterialDesignThemes.Wpf/SmartHint.cs

@@ -165,15 +165,4 @@ private void RefreshState(bool useTransitions)
             }));
         }
     }
-
-    public interface IHintProxy : IDisposable
-    {
-        string Text { get; }
-        bool IsLoaded { get; }
-        bool IsVisible { get; }
-
-        event EventHandler TextChanged;
-        event EventHandler IsVisibleChanged;
-        event EventHandler Loaded;
-    }
 }