private void BindToTemplatedParent(AvaloniaProperty target, AvaloniaProperty source)
{
//if (!HasNonDefaultValue(target))
{
//Binding binding = new Binding();
//binding.RelativeSource = new RelativeSource(RelativeSourceMode.TemplatedParent);
//binding.Path = source.p//new PropertyPath(source);
//SetBinding(target, binding);
try
{
var sourceBinding = this.GetSubject(source);
InstancedBinding instancedBinding = new InstancedBinding(sourceBinding, BindingMode.TwoWay, BindingPriority.TemplatedParent);
BindingOperations.Apply(this, target, instancedBinding, TemplatedParent);
}
catch (Exception ex)
{
}
//Bind(target, ObservableEx.SingleValue(source));
}
}
private InstancedBinding Clone(InstancedBinding sourceInstance, BindingMode mode, IStyle style, IObservable <bool> activator)
{
if (activator != null)
{
var description = style?.ToString();
switch (mode)
{
case BindingMode.OneTime:
if (sourceInstance.Observable != null)
{
var activated = new ActivatedObservable(activator, sourceInstance.Observable, description);
return(InstancedBinding.OneTime(activated, BindingPriority.StyleTrigger));
}
else
{
var activated = new ActivatedValue(activator, sourceInstance.Value, description);
return(InstancedBinding.OneTime(activated, BindingPriority.StyleTrigger));
}
case BindingMode.OneWay:
{
var activated = new ActivatedObservable(activator, sourceInstance.Observable, description);
return(InstancedBinding.OneWay(activated, BindingPriority.StyleTrigger));
}
default:
{
var activated = new ActivatedSubject(activator, sourceInstance.Subject, description);
return(new InstancedBinding(activated, sourceInstance.Mode, BindingPriority.StyleTrigger));
}
}
}
else
{
return(sourceInstance.WithPriority(BindingPriority.Style));
}
}
InstancedBinding?IBinding.Initiate(
IAvaloniaObject target,
AvaloniaProperty targetProperty,
object anchor,
bool enableDataValidation)
{
if (ResourceKey is null)
{
return(null);
}
var control = target as IStyledElement ?? _anchor as IStyledElement;
if (control != null)
{
return(InstancedBinding.OneWay(control.GetResourceObservable(ResourceKey)));
}
else if (_resourceProvider is object)
{
return(InstancedBinding.OneWay(_resourceProvider.GetResourceObservable(ResourceKey)));
}
return(null);
}
public InstancedBinding ItemsSelector(object item)
{
var obs = new ExpressionObserver(item, nameof(Node.Children));
return(InstancedBinding.OneWay(obs));
}
/// <summary>
/// Selects the child items of an item.
/// </summary>
/// <param name="item">The item.</param>
/// <returns>The child items, or null if no child items.</returns>
public InstancedBinding ItemsSelector(object item)
{
return(InstancedBinding.OneTime(this?._itemsSelector(item)));
}
public InstancedBinding ItemsSelector(object item)
{
var obs = ExpressionObserver.Create(item, o => (o as Node).Children);
return(InstancedBinding.OneWay(obs));
}
public InstancedBinding Initiate(IAvaloniaObject target, AvaloniaProperty targetProperty, object anchor = null, bool enableDataValidation = false)
{
return(InstancedBinding.OneWay(new StaticBindingObservable(Value)));
}
