public PathExpression (BindingExpression expression, string propertyName)
{
PropertyName = propertyName;
Source = expression.Property;
if (Source != null) {
if (Source.Value != null)
Property = (Source.Value as DependencyObject).GetProperty (propertyName);
Source.DependencyPropertyValueChanged += HandlePropertyValueChanged;
}
expression.GetProperty ("Property").DependencyPropertyValueChanged += HandlePropertyChanged;
}
public AttachedPropertyExpression (BindingExpression expression, object item, string propertyName)
{
PropertyName = propertyName;
Item = item;
Source = expression.Property;
if (Source != null) {
var container = Source.Value as IAttachedPropertiesContainer;
if (container != null) {
Property = container.GetProperty (item, propertyName);
container.AddedItem += HandleAddedItem;
container.RemovedItem += HandleRemovedItem;
}
Source.DependencyPropertyValueChanged += HandlePropertyValueChanged;
}
expression.GetProperty ("Property").DependencyPropertyValueChanged += HandlePropertyChanged;
}
public Binding (BindingExpression source, BindingExpression target, IValueConverter converter)
{
Source = source;
Target = target;
Converter = converter;
SourceProperty = Source.Property;
TargetProperty = Target.Property;
Source.GetProperty ("Property").DependencyPropertyValueChanged += HandleSourcePropertyChanged;
Target.GetProperty ("Property").DependencyPropertyValueChanged += HandleTargetPropertyChanged;
UpdateTargetValue ();
if (SourceProperty != null)
SourceProperty.DependencyPropertyValueChanged += HandleSourceValueChanged;
if (TargetProperty != null)
TargetProperty.DependencyPropertyValueChanged += HandleTargetValueChanged;
}
