internal XamlServiceProvider(INode node, HydratationContext context)
{
object targetObject;
if (node != null && node.Parent != null && context.Values.TryGetValue(node.Parent, out targetObject))
IProvideValueTarget = new XamlValueTargetProvider(targetObject, node, context, null);
if (context != null)
IRootObjectProvider = new XamlRootObjectProvider(context.RootElement);
if (node != null)
{
IXamlTypeResolver = new XamlTypeResolver(node.NamespaceResolver, XamlParser.GetElementType,
context.RootElement.GetType().GetTypeInfo().Assembly);
var enode = node;
while (enode != null && !(enode is IElementNode))
enode = enode.Parent;
if (enode != null)
INameScopeProvider = new NameScopeProvider { NameScope = (enode as IElementNode).Namescope };
}
var xmlLineInfo = node as IXmlLineInfo;
if (xmlLineInfo != null)
IXmlLineInfoProvider = new XmlLineInfoProvider(xmlLineInfo);
IValueConverterProvider = new ValueConverterProvider();
}
public XamlValueTargetProvider(object targetObject, INode node, HydratationContext context, object targetProperty)
{
Context = context;
Node = node;
TargetObject = targetObject;
TargetProperty = targetProperty;
}
public void TestFailOnMissingOrWrongConverter()
{
var node = new ValueNode("baz", new MockNameSpaceResolver());
var bindable = new Bindable();
Assert.IsNull(bindable.Baz);
var rootNode = new XamlLoader.RuntimeRootNode(new XmlType("clr-namespace:Xamarin.Forms.Xaml.UnitTests;assembly=Xamarin.Forms.Xaml.UnitTests", "Bindable", null), bindable, null)
{
Properties =
{
{ new XmlName(null, "Baz"), node },
}
};
var context = new HydratationContext {
RootElement = new Label()
};
rootNode.Accept(new CreateValuesVisitor(context), null);
Assert.Throws <XamlParseException>(() => node.Accept(new ApplyPropertiesVisitor(context), rootNode));
}
internal XamlServiceProvider(INode node, HydratationContext context)
{
object targetObject;
if (node != null && node.Parent != null && context.Values.TryGetValue(node.Parent, out targetObject))
{
IProvideValueTarget = new XamlValueTargetProvider(targetObject, node, context, null);
}
if (context != null)
{
IRootObjectProvider = new XamlRootObjectProvider(context.RootElement);
}
if (node != null)
{
IXamlTypeResolver = new XamlTypeResolver(node.NamespaceResolver, XamlParser.GetElementType,
context.RootElement.GetType().GetTypeInfo().Assembly);
var enode = node;
while (enode != null && !(enode is IElementNode))
{
enode = enode.Parent;
}
if (enode != null)
{
INameScopeProvider = new NameScopeProvider {
NameScope = (enode as IElementNode).Namescope
}
}
;
}
var xmlLineInfo = node as IXmlLineInfo;
if (xmlLineInfo != null)
{
IXmlLineInfoProvider = new XmlLineInfoProvider(xmlLineInfo);
}
IValueConverterProvider = new ValueConverterProvider();
}
public void TestSetPropertyWithoutConverter()
{
var baz = new Baz();
var node = new ValueNode(baz, new MockNameSpaceResolver());
var bindable = new Bindable();
Assert.IsNull(bindable.Baz);
var rootNode = new XamlLoader.RuntimeRootNode(new XmlType("clr-namespace:Xamarin.Forms.Xaml.UnitTests;assembly=Xamarin.Forms.Xaml.UnitTests", "Bindable", null), bindable, null)
{
Properties =
{
{ new XmlName(null, "Baz"), node },
}
};
var context = new HydratationContext {
RootElement = new Label()
};
rootNode.Accept(new CreateValuesVisitor(context), null);
node.Accept(new ApplyPropertiesVisitor(context), rootNode);
Assert.AreEqual(baz, bindable.Baz);
}
public void TestConvertAttachedBindableProperty()
{
var node = new ValueNode("qux", new MockNameSpaceResolver());
var bindable = new Bindable();
Assert.IsNull(Bindable.GetQux(bindable));
var rootNode = new XamlLoader.RuntimeRootNode(new XmlType("clr-namespace:Xamarin.Forms.Xaml.UnitTests;assembly=Xamarin.Forms.Xaml.UnitTests", "Bindable", null), bindable, null)
{
Properties =
{
{ new XmlName("clr-namespace:Xamarin.Forms.Xaml.UnitTests;assembly=Xamarin.Forms.Xaml.UnitTests", "Bindable.Qux"), node },
}
};
var context = new HydratationContext {
RootElement = new Label()
};
rootNode.Accept(new CreateValuesVisitor(context), null);
node.Accept(new ApplyPropertiesVisitor(context), rootNode);
Assert.IsNotNull(Bindable.GetQux(bindable));
Assert.That(Bindable.GetQux(bindable), Is.TypeOf <Qux> ());
Assert.AreEqual("qux", Bindable.GetQux(bindable).Value);
}
public void TestConvertWithAttributeOnType()
{
var node = new ValueNode("foobar", new MockNameSpaceResolver());
var bindable = new Bindable();
Assert.IsNull(bindable.FooBar);
var rootNode = new XamlLoader.RuntimeRootNode(new XmlType("clr-namespace:Xamarin.Forms.Xaml.UnitTests;assembly=Xamarin.Forms.Xaml.UnitTests", "Bindable", null), bindable, null)
{
Properties =
{
{ new XmlName(null, "FooBar"), node },
}
};
var context = new HydratationContext {
RootElement = new Label()
};
rootNode.Accept(new CreateValuesVisitor(context), null);
node.Accept(new ApplyPropertiesVisitor(context), rootNode);
Assert.IsNotNull(bindable.FooBar);
Assert.That(bindable.FooBar, Is.TypeOf <FooBar> ());
Assert.AreEqual("foobar", bindable.FooBar.Value);
}
public static object Create (string xaml, bool doNotThrow = false)
{
object inflatedView = null;
using (var reader = XmlReader.Create (new StringReader (xaml))) {
while (reader.Read ()) {
//Skip until element
if (reader.NodeType == XmlNodeType.Whitespace)
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), null, (IXmlNamespaceResolver)reader);
XamlParser.ParseXaml (rootnode, reader);
var visitorContext = new HydratationContext {
DoNotThrowOnExceptions = doNotThrow,
};
var cvv = new CreateValuesVisitor (visitorContext);
cvv.Visit ((ElementNode)rootnode, null);
inflatedView = rootnode.Root = visitorContext.Values [rootnode];
visitorContext.RootElement = inflatedView as BindableObject;
Visit (rootnode, visitorContext);
break;
}
}
return inflatedView;
}
static void Visit (RootNode rootnode, HydratationContext visitorContext)
{
rootnode.Accept (new XamlNodeVisitor ((node, parent) => node.Parent = parent), null); //set parents for {StaticResource}
rootnode.Accept (new ExpandMarkupsVisitor (visitorContext), null);
rootnode.Accept (new NamescopingVisitor (visitorContext), null); //set namescopes for {x:Reference}
rootnode.Accept (new CreateValuesVisitor (visitorContext), null);
rootnode.Accept (new RegisterXNamesVisitor (visitorContext), null);
rootnode.Accept (new FillResourceDictionariesVisitor (visitorContext), null);
rootnode.Accept (new ApplyPropertiesVisitor (visitorContext, true), null);
}
void SetTemplate(ElementTemplate dt, INode node)
{
#pragma warning disable 0612
((IDataTemplate)dt).LoadTemplate = () =>
{
#pragma warning restore 0612
var context = new HydratationContext { ParentContext = Context, RootElement = Context.RootElement };
node.Accept(new ExpandMarkupsVisitor(context), null);
node.Accept(new NamescopingVisitor(context), null);
node.Accept(new CreateValuesVisitor(context), null);
node.Accept(new RegisterXNamesVisitor(context), null);
node.Accept(new FillResourceDictionariesVisitor(context), null);
node.Accept(new ApplyPropertiesVisitor(context, true), null);
return context.Values[node];
};
}
public static void SetPropertyValue(object xamlelement, XmlName propertyName, object value, object rootElement,
INode node, HydratationContext context, IXmlLineInfo lineInfo)
{
var elementType = xamlelement.GetType();
var localname = propertyName.LocalName;
var serviceProvider = new XamlServiceProvider(node, context);
//If it's an attached BP, update elementType and propertyName
var attached = GetRealNameAndType(ref elementType, propertyName.NamespaceURI, ref localname, context, lineInfo);
//If the target is an event, connect
var eventInfo = elementType.GetRuntimeEvent(localname);
if (eventInfo != null && value is string)
{
var methodInfo = rootElement.GetType().GetRuntimeMethods().FirstOrDefault(mi => mi.Name == (string)value);
if (methodInfo == null) {
var xpe = new XamlParseException (string.Format ("No method {0} found on type {1}", value, rootElement.GetType ()), lineInfo);
if (context.DoNotThrowOnExceptions) {
System.Diagnostics.Debug.WriteLine (xpe.Message);
return;
} else
throw xpe;
}
try
{
eventInfo.AddEventHandler(xamlelement, methodInfo.CreateDelegate(eventInfo.EventHandlerType, rootElement));
}
catch (ArgumentException)
{
var xpe = new XamlParseException (string.Format ("Method {0} does not have the correct signature", value), lineInfo);
if (context.DoNotThrowOnExceptions)
System.Diagnostics.Debug.WriteLine (xpe.Message);
else
throw xpe;
}
return;
}
var property = GetBindableProperty(elementType, localname, lineInfo, false);
//If Value is DynamicResource and it's a BP, SetDynamicResource
if (value is DynamicResource && property != null)
{
if (!(xamlelement.GetType()).GetTypeInfo().IsSubclassOf(typeof (BindableObject)))
throw new XamlParseException(string.Format("{0} is not a BindableObject", xamlelement.GetType().Name), lineInfo);
((BindableObject)xamlelement).SetDynamicResource(property, ((DynamicResource)value).Key);
return;
}
//If value is BindingBase, and target is a BindableProperty, SetBinding
if (value is BindingBase && property != null)
{
if (!(xamlelement.GetType()).GetTypeInfo().IsSubclassOf(typeof (BindableObject)))
throw new XamlParseException(string.Format("{0} is not a BindableObject", xamlelement.GetType().Name), lineInfo);
((BindableObject)xamlelement).SetBinding(property, value as BindingBase);
return;
}
//If it's a BindableProberty, SetValue
if (property != null)
{
if (!(xamlelement.GetType()).GetTypeInfo().IsSubclassOf(typeof (BindableObject)))
throw new XamlParseException(string.Format("{0} is not a BindableObject", xamlelement.GetType().Name), lineInfo);
Func<MemberInfo> minforetriever;
if (attached)
minforetriever = () => elementType.GetRuntimeMethod("Get" + localname, new[] { typeof (BindableObject) });
else
minforetriever = () => elementType.GetRuntimeProperty(localname);
var convertedValue = value.ConvertTo(property.ReturnType, minforetriever, serviceProvider);
//SetValue doesn't throw on mismatching type, so check before to get a chance to try the property setting or the collection adding
var nullable = property.ReturnTypeInfo.IsGenericType &&
property.ReturnTypeInfo.GetGenericTypeDefinition() == typeof (Nullable<>);
if ((convertedValue == null && (!property.ReturnTypeInfo.IsValueType || nullable)) ||
(property.ReturnType.IsInstanceOfType(convertedValue)))
{
((BindableObject)xamlelement).SetValue(property, convertedValue);
return;
}
}
var exception = new XamlParseException(
String.Format("No Property of name {0} found", propertyName.LocalName), lineInfo);
//If we can assign that value to a normal property, let's do it
var propertyInfo = elementType.GetRuntimeProperties().FirstOrDefault(p => p.Name == localname);
MethodInfo setter;
if (propertyInfo != null && propertyInfo.CanWrite && (setter = propertyInfo.SetMethod) != null)
{
object convertedValue = value.ConvertTo(propertyInfo.PropertyType, () => propertyInfo, serviceProvider);
if (convertedValue == null || propertyInfo.PropertyType.IsInstanceOfType(convertedValue))
{
try
{
setter.Invoke(xamlelement, new[] { convertedValue });
return;
}
catch (ArgumentException)
{
}
}
else
{
exception = new XamlParseException(
String.Format("Cannot assign property \"{0}\": type mismatch between \"{1}\" and \"{2}\"", propertyName.LocalName,
value.GetType(), propertyInfo.PropertyType), lineInfo);
}
}
//If it's an already initialized property, add to it
MethodInfo getter;
if (propertyInfo != null && propertyInfo.CanRead && (getter = propertyInfo.GetMethod) != null)
{
IEnumerable collection;
MethodInfo addMethod;
if ((collection = getter.Invoke(xamlelement, new object[] { }) as IEnumerable) != null
&&
(addMethod =
collection.GetType().GetRuntimeMethods().First(mi => mi.Name == "Add" && mi.GetParameters().Length == 1)) !=
null)
{
addMethod.Invoke(collection,
new[] { value.ConvertTo(propertyInfo.PropertyType, (Func<TypeConverter>)null, serviceProvider) });
return;
}
}
if (context.DoNotThrowOnExceptions)
System.Diagnostics.Debug.WriteLine (exception.Message);
else
throw exception;
}
static bool GetRealNameAndType(ref Type elementType, string namespaceURI, ref string localname,
HydratationContext context, IXmlLineInfo lineInfo)
{
var dotIdx = localname.IndexOf('.');
if (dotIdx > 0)
{
var typename = localname.Substring(0, dotIdx);
localname = localname.Substring(dotIdx + 1);
XamlParseException xpe;
elementType = XamlParser.GetElementType(new XmlType(namespaceURI, typename, null), lineInfo,
context.RootElement.GetType().GetTypeInfo().Assembly, out xpe);
if (xpe != null)
throw xpe;
return true;
}
return false;
}
public ApplyPropertiesVisitor(HydratationContext context, bool stopOnResourceDictionary = false)
{
Context = context;
StopOnResourceDictionary = stopOnResourceDictionary;
}
public XamlValueTargetProvider(object targetObject, INode node, HydratationContext context, object targetProperty)
{
Context = context;
Node = node;
TargetObject = targetObject;
TargetProperty = targetProperty;
}
public void TestFailOnMissingOrWrongConverter ()
{
var node = new ValueNode ("baz", new MockNameSpaceResolver());
var bindable = new Bindable ();
Assert.IsNull (bindable.Baz);
var rootNode = new XamlLoader.RuntimeRootNode (new XmlType("clr-namespace:Xamarin.Forms.Xaml.UnitTests;assembly=Xamarin.Forms.Xaml.UnitTests","Bindable",null), bindable, null) {
Properties = {
{ new XmlName (null, "Baz"), node },
}
};
var context = new HydratationContext { RootElement = new Label () };
rootNode.Accept (new CreateValuesVisitor (context), null);
Assert.Throws<XamlParseException>(()=> node.Accept (new ApplyPropertiesVisitor (context), rootNode));
}
public RegisterXNamesVisitor(HydratationContext context)
{
Values = context.Values;
}
public CreateValuesVisitor(HydratationContext context)
{
Context = context;
}
public NamescopingVisitor(HydratationContext context)
{
Values = context.Values;
}
public void TestConvertAttachedBindableProperty ()
{
var node = new ValueNode ("qux", new MockNameSpaceResolver());
var bindable = new Bindable ();
Assert.IsNull (Bindable.GetQux (bindable));
var rootNode = new XamlLoader.RuntimeRootNode (new XmlType("clr-namespace:Xamarin.Forms.Xaml.UnitTests;assembly=Xamarin.Forms.Xaml.UnitTests","Bindable",null), bindable, null) {
Properties = {
{ new XmlName ("clr-namespace:Xamarin.Forms.Xaml.UnitTests;assembly=Xamarin.Forms.Xaml.UnitTests", "Bindable.Qux"), node },
}
};
var context = new HydratationContext { RootElement = new Label () };
rootNode.Accept (new CreateValuesVisitor (context), null);
node.Accept (new ApplyPropertiesVisitor (context), rootNode);
Assert.IsNotNull (Bindable.GetQux (bindable));
Assert.That (Bindable.GetQux (bindable), Is.TypeOf<Qux> ());
Assert.AreEqual ("qux", Bindable.GetQux (bindable).Value);
}
public void TestSetPropertyWithoutConverter ()
{
var baz = new Baz ();
var node = new ValueNode (baz, new MockNameSpaceResolver());
var bindable = new Bindable ();
Assert.IsNull (bindable.Baz);
var rootNode = new XamlLoader.RuntimeRootNode (new XmlType("clr-namespace:Xamarin.Forms.Xaml.UnitTests;assembly=Xamarin.Forms.Xaml.UnitTests","Bindable",null), bindable, null) {
Properties = {
{ new XmlName (null, "Baz"), node },
}
};
var context = new HydratationContext { RootElement = new Label () };
rootNode.Accept (new CreateValuesVisitor(context), null);
node.Accept (new ApplyPropertiesVisitor (context), rootNode);
Assert.AreEqual (baz, bindable.Baz);
}
public void TestConvertWithAttributeOnType ()
{
var node = new ValueNode ("foobar", new MockNameSpaceResolver());
var bindable = new Bindable ();
Assert.IsNull (bindable.FooBar);
var rootNode = new XamlLoader.RuntimeRootNode (new XmlType("clr-namespace:Xamarin.Forms.Xaml.UnitTests;assembly=Xamarin.Forms.Xaml.UnitTests","Bindable",null), bindable, null) {
Properties = {
{ new XmlName (null, "FooBar"), node },
}
};
var context = new HydratationContext { RootElement = new Label () };
rootNode.Accept (new CreateValuesVisitor (context), null);
node.Accept (new ApplyPropertiesVisitor (context), rootNode);
Assert.IsNotNull (bindable.FooBar);
Assert.That (bindable.FooBar, Is.TypeOf<FooBar> ());
Assert.AreEqual ("foobar", bindable.FooBar.Value);
}