static bool TrySetProperty(object element, string localName, object value, IXmlLineInfo lineInfo, XamlServiceProvider serviceProvider, HydrationContext context, out Exception exception)
{
exception = null;
var elementType = element.GetType();
var propertyInfo = elementType.GetRuntimeProperties().FirstOrDefault(p => p.Name == localName);
MethodInfo setter;
if (propertyInfo == null || !propertyInfo.CanWrite || (setter = propertyInfo.SetMethod) == null)
{
return(false);
}
if (!IsVisibleFrom(setter, context.RootElement))
{
return(false);
}
if (serviceProvider != null && serviceProvider.IProvideValueTarget != null)
{
((XamlValueTargetProvider)serviceProvider.IProvideValueTarget).TargetProperty = propertyInfo;
}
object convertedValue = value.ConvertTo(propertyInfo.PropertyType, () => propertyInfo, serviceProvider, out exception);
if (exception != null || (convertedValue != null && !propertyInfo.PropertyType.IsInstanceOfType(convertedValue)))
{
return(false);
}
try {
setter.Invoke(element, new object[] { convertedValue });
return(true);
}
catch (Exception e) {
exception = e;
return(false);
}
}
public static void SetPropertyValue(object xamlelement, XmlName propertyName, object value, object rootElement, INode node, HydrationContext context, IXmlLineInfo lineInfo)
{
var localName = propertyName.LocalName;
var serviceProvider = new XamlServiceProvider(node, context);
Exception xpe = null;
var xKey = node is IElementNode && ((IElementNode)node).Properties.ContainsKey(XmlName.xKey) ? ((ValueNode)((IElementNode)node).Properties[XmlName.xKey]).Value as string : null;
//If it's an attached BP, update elementType and propertyName
var bpOwnerType = xamlelement.GetType();
var attached = GetRealNameAndType(ref bpOwnerType, propertyName.NamespaceURI, ref localName, context, lineInfo);
var property = GetBindableProperty(bpOwnerType, localName, lineInfo, false);
//If the target is an event, connect
if (xpe == null && TryConnectEvent(xamlelement, localName, attached, value, rootElement, lineInfo, out xpe))
{
return;
}
//If Value is DynamicResource and it's a BP, SetDynamicResource
if (xpe == null && TrySetDynamicResource(xamlelement, property, value, lineInfo, out xpe))
{
return;
}
//If value is BindingBase, SetBinding
if (xpe == null && TrySetBinding(xamlelement, property, localName, value, lineInfo, out xpe))
{
return;
}
var assemblyName = (context.RootAssembly ?? rootElement.GetType().GetTypeInfo().Assembly)?.GetName().Name;
//If it's a BindableProberty, SetValue
if (xpe == null && TrySetValue(xamlelement, property, attached, value, lineInfo, serviceProvider, out xpe))
{
if (!(node is ValueNode) && value != null && !value.GetType().GetTypeInfo().IsValueType&& XamlFilePathAttribute.GetFilePathForObject(context.RootElement) is string path)
{
VisualDiagnostics.RegisterSourceInfo(value, new Uri($"{path};assembly={assemblyName}", UriKind.Relative), ((IXmlLineInfo)node).LineNumber, ((IXmlLineInfo)node).LinePosition);
}
return;
}
//If we can assign that value to a normal property, let's do it
if (xpe == null && TrySetProperty(xamlelement, localName, value, lineInfo, serviceProvider, context, out xpe))
{
if (!(node is ValueNode) && value != null && !value.GetType().GetTypeInfo().IsValueType&& XamlFilePathAttribute.GetFilePathForObject(context.RootElement) is string path)
{
VisualDiagnostics.RegisterSourceInfo(value, new Uri($"{path};assembly={assemblyName}", UriKind.Relative), ((IXmlLineInfo)node).LineNumber, ((IXmlLineInfo)node).LinePosition);
}
return;
}
//If it's an already initialized property, add to it
if (xpe == null && TryAddToProperty(xamlelement, propertyName, value, xKey, lineInfo, serviceProvider, context, out xpe))
{
if (!(node is ValueNode) && value != null && !value.GetType().GetTypeInfo().IsValueType&& XamlFilePathAttribute.GetFilePathForObject(context.RootElement) is string path)
{
VisualDiagnostics.RegisterSourceInfo(value, new Uri($"{path};assembly={assemblyName}", UriKind.Relative), ((IXmlLineInfo)node).LineNumber, ((IXmlLineInfo)node).LinePosition);
}
return;
}
xpe = xpe ?? new XamlParseException($"Cannot assign property \"{localName}\": Property does not exist, or is not assignable, or mismatching type between value and property", lineInfo);
if (context.ExceptionHandler != null)
{
context.ExceptionHandler(xpe);
}
else
{
throw xpe;
}
}
public static object GetPropertyValue(object xamlElement, XmlName propertyName, HydrationContext context, IXmlLineInfo lineInfo, out Exception xpe, out object targetProperty)
{
var localName = propertyName.LocalName;
xpe = null;
targetProperty = null;
//If it's an attached BP, update elementType and propertyName
var bpOwnerType = xamlElement.GetType();
var attached = GetRealNameAndType(ref bpOwnerType, propertyName.NamespaceURI, ref localName, context, lineInfo);
var property = GetBindableProperty(bpOwnerType, localName, lineInfo, false);
//If it's a BindableProberty, GetValue
if (xpe == null && TryGetValue(xamlElement, property, attached, out var value, lineInfo, out xpe, out targetProperty))
{
return(value);
}
//If it's a normal property, get it
if (xpe == null && TryGetProperty(xamlElement, localName, out value, lineInfo, context, out xpe, out targetProperty))
{
return(value);
}
xpe = xpe ?? new XamlParseException($"Property {localName} is not found or does not have an accessible getter", lineInfo);
return(null);
}
public ApplyPropertiesVisitor(HydrationContext context, bool stopOnResourceDictionary = false)
{
Context = context;
StopOnResourceDictionary = stopOnResourceDictionary;
}
public ExpandMarkupsVisitor(HydrationContext context) => Context = context;
public NamescopingVisitor(HydrationContext context)
{
}
public CreateValuesVisitor(HydrationContext context)
{
Context = context;
}
public FillResourceDictionariesVisitor(HydrationContext context)
{
Context = context;
}
