[Effen] Add AnimatedComponent base class

sky/framework/components/ink_well.dart

Index: sky/framework/components/ink_well.dart
diff --git a/sky/framework/components/ink_well.dart b/sky/framework/components/ink_well.dart
index 601e3c75102a31e812146ae690548a3d9a8ac5c2..6f452694f7b34e7bd6cfdf4f9637a0d2e43b3cd1 100644
--- a/sky/framework/components/ink_well.dart
+++ b/sky/framework/components/ink_well.dart
@@ -15,7 +15,11 @@ class InkWell extends Component {
   List<Node> children;
 
   InkWell({ Object key, this.style, this.inlineStyle, this.children })
-      : super(key: key);
+      : super(key: key) {
+    onDidUnmount(() {
+      _cancelSplashes(null);
+    });
+  }
 
   Node build() {
     List<Node> childrenIncludingSplashes = [];
@@ -69,10 +73,6 @@ class InkWell extends Component {
     });
   }
 
-  void didUnmount() {
-    _cancelSplashes(null);
-  }
-
   void _splashDone(SplashController splash) {
     if (_splashes == null)
       return;