diff options
Diffstat (limited to 'Xamarin.Forms.Core')
| -rw-r--r-- | Xamarin.Forms.Core/BindableObject.cs | 8 | ||||
| -rw-r--r-- | Xamarin.Forms.Core/VisualElement.cs | 13 |
2 files changed, 21 insertions, 0 deletions
diff --git a/Xamarin.Forms.Core/BindableObject.cs b/Xamarin.Forms.Core/BindableObject.cs index 217f4a94..b5e41452 100644 --- a/Xamarin.Forms.Core/BindableObject.cs +++ b/Xamarin.Forms.Core/BindableObject.cs @@ -163,6 +163,14 @@ namespace Xamarin.Forms return bpcontext != null && bpcontext.Binding != null; } + internal bool GetIsDefault(BindableProperty targetProperty) + { + if (targetProperty == null) + throw new ArgumentNullException(nameof(targetProperty)); + + return GetContext(targetProperty) == null; + } + internal object[] GetValues(BindableProperty property0, BindableProperty property1) { var values = new object[2]; diff --git a/Xamarin.Forms.Core/VisualElement.cs b/Xamarin.Forms.Core/VisualElement.cs index 053ddb0a..cff1eb10 100644 --- a/Xamarin.Forms.Core/VisualElement.cs +++ b/Xamarin.Forms.Core/VisualElement.cs @@ -781,5 +781,18 @@ namespace Xamarin.Forms public bool Result { get; set; } } + + ~VisualElement() + { + if (!GetIsDefault(BehaviorsProperty)) { + var behaviors = GetValue(BehaviorsProperty) as AttachedCollection<Behavior>; + behaviors.DetachFrom(this); + } + + if (!GetIsDefault(TriggersProperty)) { + var triggers = GetValue(TriggersProperty) as AttachedCollection<Trigger>; + triggers.DetachFrom(this); + } + } } }
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