public static object Create(string xaml, bool doNotThrow, bool useDesignProperties) { doNotThrow = doNotThrow || ResourceLoader.ExceptionHandler2 != null; void ehandler(Exception e) => ResourceLoader.ExceptionHandler2?.Invoke((e, null)); object inflatedView = null; using (var textreader = new StringReader(xaml)) using (var reader = XmlReader.Create(textreader)) { while (reader.Read()) { //Skip until element if (reader.NodeType == XmlNodeType.Whitespace) { continue; } if (reader.NodeType == XmlNodeType.XmlDeclaration) { continue; } if (reader.NodeType != XmlNodeType.Element) { Debug.WriteLine("Unhandled node {0} {1} {2}", reader.NodeType, reader.Name, reader.Value); continue; } var typeArguments = XamlParser.GetTypeArguments(reader); var rootnode = new RuntimeRootNode(new XmlType(reader.NamespaceURI, reader.Name, typeArguments), null, (IXmlNamespaceResolver)reader) { LineNumber = ((IXmlLineInfo)reader).LineNumber, LinePosition = ((IXmlLineInfo)reader).LinePosition }; XamlParser.ParseXaml(rootnode, reader); var visitorContext = new HydrationContext { ExceptionHandler = doNotThrow ? ehandler : (Action <Exception>)null, }; var cvv = new CreateValuesVisitor(visitorContext); cvv.Visit((ElementNode)rootnode, null); inflatedView = rootnode.Root = visitorContext.Values[rootnode]; if (XamlFilePathAttribute.GetFilePathForObject(inflatedView) is string path) { VisualDiagnostics.RegisterSourceInfo(inflatedView, new Uri($"{path};assembly={inflatedView.GetType().GetTypeInfo().Assembly.GetName().Name}", UriKind.Relative), ((IXmlLineInfo)rootnode).LineNumber, ((IXmlLineInfo)rootnode).LinePosition); VisualDiagnostics.SendVisualTreeChanged(null, inflatedView); } visitorContext.RootElement = inflatedView as BindableObject; Visit(rootnode, visitorContext, useDesignProperties); break; } } return(inflatedView); }
public static void Load(object view, string xaml, Assembly rootAssembly, bool useDesignProperties) { using (var textReader = new StringReader(xaml)) using (var reader = XmlReader.Create(textReader)) { while (reader.Read()) { //Skip until element if (reader.NodeType == XmlNodeType.Whitespace) { continue; } if (reader.NodeType == XmlNodeType.XmlDeclaration) { continue; } if (reader.NodeType != XmlNodeType.Element) { Debug.WriteLine("Unhandled node {0} {1} {2}", reader.NodeType, reader.Name, reader.Value); continue; } var rootnode = new RuntimeRootNode(new XmlType(reader.NamespaceURI, reader.Name, null), view, (IXmlNamespaceResolver)reader) { LineNumber = ((IXmlLineInfo)reader).LineNumber, LinePosition = ((IXmlLineInfo)reader).LinePosition }; if (XamlFilePathAttribute.GetFilePathForObject(view) is string path) { VisualDiagnostics.RegisterSourceInfo(view, new Uri($"{path};assembly={view.GetType().GetTypeInfo().Assembly.GetName().Name}", UriKind.Relative), ((IXmlLineInfo)rootnode).LineNumber, ((IXmlLineInfo)rootnode).LinePosition); VisualDiagnostics.SendVisualTreeChanged(null, view); } XamlParser.ParseXaml(rootnode, reader); #pragma warning disable 0618 var doNotThrow = ResourceLoader.ExceptionHandler2 != null || Internals.XamlLoader.DoNotThrowOnExceptions; #pragma warning restore 0618 void ehandler(Exception e) => ResourceLoader.ExceptionHandler2?.Invoke((e, XamlFilePathAttribute.GetFilePathForObject(view))); Visit(rootnode, new HydrationContext { RootElement = view, RootAssembly = rootAssembly ?? view.GetType().GetTypeInfo().Assembly, ExceptionHandler = doNotThrow ? ehandler : (Action <Exception>)null }, useDesignProperties); break; } } }
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; } }