bool ShouldAttachItem(T item)
{
if (InteractionHelper.GetEnableBehaviorsInDesignTime(AssociatedObject))
{
return(true);
}
if (!InteractionHelper.IsInDesignMode(AssociatedObject))
{
return(true);
}
return(!InteractionHelper.IsInDesignMode(item));
}
void ResolveSource(bool forceResolving, bool?useVisualTree = null)
{
if (ViewModelBase.IsInDesignMode &&
!InteractionHelper.GetEnableBehaviorsInDesignTime(AssociatedObject)
)
{
return;
}
if (!IsAttached)
{
return;
}
if (Source != null && !forceResolving)
{
return;
}
if (SourceObject != null)
{
Source = SourceObject;
return;
}
bool useVisualTreeCore = useVisualTree ?? false;
var sourceObjectBinding = GetBindingExp(this, SourceObjectProperty);
if (sourceObjectBinding != null)
{
string elementName = null;
if (sourceObjectBinding.ParentBinding != null)
{
elementName = sourceObjectBinding.ParentBinding.ElementName;
}
if (!string.IsNullOrEmpty(elementName))
{
Source = FindObject(AssociatedObject, elementName, useVisualTreeCore);
}
return;
}
var sourceNameBinding = GetBindingExp(this, SourceNameProperty);
if (!string.IsNullOrEmpty(SourceName) || sourceNameBinding != null)
{
Source = FindObject(AssociatedObject, SourceName, useVisualTreeCore);
return;
}
Source = AssociatedObject;
return;
}
void ResolveSource(bool forceResolving, bool?useVisualTree = null)
{
if (ViewModelBase.IsInDesignMode &&
!InteractionHelper.GetEnableBehaviorsInDesignTime(AssociatedObject)
)
{
return;
}
if (!IsAttached)
{
return;
}
if (Source != null && !forceResolving)
{
return;
}
object source;
if (ResolveSource(out source, AssociatedObject, useVisualTree))
{
Source = source;
}
}
