/// <inheritdoc/>
internal override IDisposable?RouteSetValue(
AvaloniaObject o,
object?value,
BindingPriority priority)
{
var v = TryConvert(value);
if (v.HasValue)
{
o.SetValue <TValue>(this, (TValue)v.Value !);
}
else if (v.Type == BindingValueType.UnsetValue)
{
o.ClearValue(this);
}
else if (v.HasError)
{
throw v.Error !;
}
return(null);
}
internal abstract void RouteInheritanceParentChanged(AvaloniaObject o, IAvaloniaObject oldParent);
public ValueStore(AvaloniaObject owner)
{
_sink = _owner = owner;
_values = new AvaloniaPropertyValueStore <IValue>();
}
/// <inheritdoc/>
internal override void RouteInheritanceParentChanged(
AvaloniaObject o,
IAvaloniaObject?oldParent)
{
o.InheritanceParentChanged(this, oldParent);
}
/// <summary>
/// Gets all <see cref="AvaloniaProperty"/>s registered on a object.
/// </summary>
/// <param name="o">The object.</param>
/// <returns>A collection of <see cref="AvaloniaProperty"/> definitions.</returns>
public IEnumerable <AvaloniaProperty> GetRegistered(AvaloniaObject o)
{
Contract.Requires <ArgumentNullException>(o != null);
return(GetRegistered(o.GetType()));
}
/// <summary>
/// Finds a registered property on an object by name.
/// </summary>
/// <param name="o">The object.</param>
/// <param name="name">
/// The property name. If an attached property it should be in the form
/// "OwnerType.PropertyName".
/// </param>
/// <returns>
/// The registered property or null if no matching property found.
/// </returns>
public AvaloniaProperty FindRegistered(AvaloniaObject o, string name)
{
return(FindRegistered(o.GetType(), name));
}
internal override void RouteInheritanceParentChanged(AvaloniaObject o, IAvaloniaObject oldParent)
{
throw new NotSupportedException("Direct properties do not support inheritance.");
}
/// <inheritdoc/>
internal override object?RouteGetValue(AvaloniaObject o)
{
return(o.GetValue <TValue>(this));
}
internal override object?RouteGetBaseValue(AvaloniaObject o, BindingPriority maxPriority)
{
return(o.GetValue <TValue>(this));
}
/// <inheritdoc/>
internal override void RouteClearValue(AvaloniaObject o)
{
o.ClearValue <TValue>(this);
}
internal void NotifyInitialized(AvaloniaObject o)
{
Contract.Requires <ArgumentNullException>(o != null);
var type = o.GetType();
void Notify(AvaloniaProperty property, object value)
{
var e = new AvaloniaPropertyChangedEventArgs(
o,
property,
AvaloniaProperty.UnsetValue,
value,
BindingPriority.Unset);
property.NotifyInitialized(e);
}
if (!_initializedCache.TryGetValue(type, out var initializationData))
{
var visited = new HashSet <AvaloniaProperty>();
initializationData = new List <PropertyInitializationData>();
foreach (AvaloniaProperty property in GetRegistered(type))
{
if (property.IsDirect)
{
initializationData.Add(new PropertyInitializationData(property, (IDirectPropertyAccessor)property));
}
else
{
initializationData.Add(new PropertyInitializationData(property, (IStyledPropertyAccessor)property, type));
}
visited.Add(property);
}
foreach (AvaloniaProperty property in GetRegisteredAttached(type))
{
if (!visited.Contains(property))
{
initializationData.Add(new PropertyInitializationData(property, (IStyledPropertyAccessor)property, type));
visited.Add(property);
}
}
_initializedCache.Add(type, initializationData);
}
foreach (PropertyInitializationData data in initializationData)
{
if (!data.Property.HasNotifyInitializedObservers)
{
continue;
}
object value = data.IsDirect ? data.DirectAccessor.GetValue(o) : data.Value;
Notify(data.Property, value);
}
}
public ValueStore(AvaloniaObject owner)
{
_owner = owner;
}
/// <inheritdoc/>
internal override object?RouteGetBaseValue(AvaloniaObject o, BindingPriority maxPriority)
{
var value = o.GetBaseValue <TValue>(this, maxPriority);
return(value.HasValue ? value.Value : AvaloniaProperty.UnsetValue);
}
public ValueStore(AvaloniaObject owner)
{
_owner = owner;
_propertyValues = new AvaloniaPropertyValueStore<object>();
_deferredSetters = new AvaloniaPropertyValueStore<object>();
}
