private void BindToDataContextWhenItsSet(XamlBindingDefinition definition)
{
var target = definition.Target;
var dataContext = target.DataContext;
var binding = this.propertyBinder.GetBinding(target, definition.TargetProperty);
binding.Bind(dataContext);
}
private void BindToDataContextWhenItsSet(XamlBindingDefinition definition)
{
var target = definition.Target;
var dataContext = target.DataContext;
var binding = _propertyBinder.GetBinding(target, definition.TargetProperty);
binding.BindToDataContext(dataContext);
}
private void HandleXamlBindingDefinition(XamlBindingDefinition xamlBindingDefinition)
{
PerspexObject subjectObject = xamlBindingDefinition.Target;
_propertyBinder.Create(xamlBindingDefinition);
var observableForDataContext = subjectObject.GetObservable(Control.DataContextProperty);
observableForDataContext.Where(o => o != null).Subscribe(_ => BindToDataContextWhenItsSet(xamlBindingDefinition));
}
private void HandleXamlBindingDefinition(object instance, XamlBindingDefinition def)
{
if (_xamlMember.XamlType.UnderlyingType == typeof(XamlBindingDefinition))
{
// TODO: This should search base classes.
var property = instance.GetType().GetTypeInfo().GetDeclaredProperty(_xamlMember.Name);
if (property == null || !property.CanWrite)
{
throw new InvalidOperationException(
$"Cannot assign to '{_xamlMember.Name}' on '{instance.GetType()}");
}
property.SetValue(instance, def);
}
else
{
var perspexObject = instance as PerspexObject;
var attached = _xamlMember as PerspexAttachableXamlMember;
if (perspexObject == null)
{
throw new InvalidOperationException(
$"Cannot bind to an object of type '{instance.GetType()}");
}
PerspexProperty property;
string propertyName;
if (attached == null)
{
propertyName = _xamlMember.Name;
property = perspexObject.GetRegisteredProperties()
.FirstOrDefault(x => x.Name == propertyName);
}
else
{
// Ensure the OwnerType's static ctor has been run.
RuntimeHelpers.RunClassConstructor(attached.DeclaringType.UnderlyingType.TypeHandle);
propertyName = attached.DeclaringType.UnderlyingType.Name + '.' + _xamlMember.Name;
property = perspexObject.GetRegisteredProperties()
.Where(x => x.IsAttached && x.OwnerType == attached.DeclaringType.UnderlyingType)
.FirstOrDefault(x => x.Name == _xamlMember.Name);
}
if (property == null)
{
throw new InvalidOperationException(
$"Cannot find '{propertyName}' on '{instance.GetType()}");
}
var binding = new XamlBinding
{
BindingMode = def.BindingMode,
SourcePropertyPath = def.SourcePropertyPath,
};
binding.Bind(perspexObject, property);
}
}
private void HandleXamlBindingDefinition(XamlBindingDefinition xamlBindingDefinition)
{
PerspexObject subjectObject = xamlBindingDefinition.Target;
this.propertyBinder.Create(xamlBindingDefinition);
var observableForDataContext = subjectObject.GetObservable(Control.DataContextProperty);
observableForDataContext.Where(o => o != null).Subscribe(_ => this.BindToDataContextWhenItsSet(xamlBindingDefinition));
}
