AnimatedCrossFade: optional disposing of invisible child

codewriter-packages · May 9, 2021 · 2ea3e43 · 2ea3e43
1 parent 41d9198
commit 2ea3e43
Showing 1 changed file with 11 additions and 0 deletions.
diff --git a/Runtime/Widgets/AnimatedCrossFade.cs b/Runtime/Widgets/AnimatedCrossFade.cs
@@ -10,6 +10,7 @@ public class AnimatedCrossFade : StatefulWidget
         public float Duration { get; set; } = 0f;
         public float? ReverseDuration { get; set; } = null;
         public Alignment Alignment { get; set; } = Alignment.Center;
+        public bool KeepMounted { get; set; } = false;
 
         public override State CreateState() => new AnimatedCrossFadeState();
 
@@ -38,6 +39,11 @@ public override void InitState()
 
             _firstChild = CreateChild(context =>
             {
+                if (!Widget.KeepMounted && _controller.IsCompleted)
+                {
+                    return new Empty();
+                }
+
                 return new CompositeTransition
                 {
                     Key = _firstKey,
@@ -47,6 +53,11 @@ public override void InitState()
             });
             _secondChild = CreateChild(context =>
             {
+                if (!Widget.KeepMounted && _controller.IsDismissed)
+                {
+                    return new Empty();
+                }
+
                 return new CompositeTransition
                 {
                     Key = _secondKey,