public IXamlAstNode Transform(AstTransformationContext context, IXamlAstNode node)
{
if (node is XamlValueWithManipulationNode valWithManip &&
TryGetNewObjectNodeForXamlDirect(valWithManip, out var newObj) &&
newObj.Arguments.Count == 0)
{
if (!(valWithManip.Manipulation is XamlObjectInitializationNode init) ||
!(init.Manipulation is XamlManipulationGroupNode manipGrp))
{
throw new XamlParseException(
"Unable to find the object initialization node inside object creation.", node);
}
IXamlType objType = newObj.Type.GetClrType();
if (objType.Assembly != context.GetWinUITypes().WinUIControlsAssembly)
{
// Only built-in controls have XamlDirect support.
// Remove the XamlDirect setters since XamlDirect isn't worth using once the object
// is created and return.
RemoveXamlDirectSettersFromAssignments(manipGrp);
return(node);
}
IXamlField typeIndex = context.GetWinUITypes().XamlTypeIndex.GetAllFields().FirstOrDefault(fld => fld.Name == objType.Name);
if (typeIndex is null)
{
// We didn't find a matching type index, so we can't use XamlDirect.
// Remove the XamlDirect setters since XamlDirect isn't worth using once the object
// is created and return.
RemoveXamlDirectSettersFromAssignments(manipGrp);
return(node);
}
IXamlAstValueNode constructedObjNode = new XamlDirectNewObjectNode(newObj, context.GetWinUITypes().IXamlDirectObject, typeIndex);
var xamlDirectAssignmentsNode = new XamlManipulationGroupNode(constructedObjNode);
var standardAssignmentsNode = new XamlManipulationGroupNode(constructedObjNode);
ExtractXamlDirectAssignments(manipGrp, xamlDirectAssignmentsNode, standardAssignmentsNode);
if (xamlDirectAssignmentsNode.Children.Count != 0)
{
constructedObjNode = new XamlValueWithManipulationNode(constructedObjNode, constructedObjNode, xamlDirectAssignmentsNode);
}
if (standardAssignmentsNode.Children.Count == 0)
{
node = new XamlObjectFromDirectObjectNode(constructedObjNode, newObj.Type);
}
else
{
valWithManip.Value = new XamlObjectFromDirectObjectNode(constructedObjNode, newObj.Type);
init.Manipulation = standardAssignmentsNode;
}
}
return(node);
public IXamlAstNode Transform(AstTransformationContext context, IXamlAstNode node)
{
// By the time this transform runs, either all setters will be XamlDirect setters
// or none will be.
if (node is XamlPropertyAssignmentNode assign &&
assign.PossibleSetters[0] is IXamlDirectSetter)
{
foreach (var setter in assign.PossibleSetters)
{
IXamlDirectSetter directSetter = (IXamlDirectSetter)setter;
// Up to this point, the type of the setter parameter matches the actual property type
// so that the compiler correctly resolves the setter as a possible setter.
// For the emit phase, we need to change the setter type to match the actual type
// that the emitted code expects.
// Here we change the setter type from a DependencyObject-derived type to IXamlDirectObject
// so that the emitters know that the actual expected parameter type is IXamlDirectObject.
// Additionally, if we are setting a property that is type object with a DependencyObject-derived object,
// we need to use the IXamlDirectObject setter.
if (!(directSetter is XamlDirectEventSetter))
{
if (context.GetWinUITypes().DependencyObject.IsAssignableFrom(directSetter.Parameters[0]))
{
directSetter.ChangeEmitSetterType(context.GetWinUITypes().IXamlDirectObject);
}
else if (directSetter.Parameters[0] == context.Configuration.WellKnownTypes.Object)
{
if (context.GetWinUITypes().DependencyObject.IsAssignableFrom(assign.Values[0].Type.GetClrType()))
{
directSetter.ChangeEmitSetterType(context.GetWinUITypes().IXamlDirectObject);
}
}
}
}
for (int i = 0; i < assign.Values.Count; i++)
{
if (assign.Values[i] is XamlObjectFromDirectObjectNode objFromDirect)
{
assign.Values[i] = objFromDirect.Value;
}
else if (assign.Values[i] is XamlValueWithManipulationNode || assign.PossibleSetters[0].Parameters[0] == context.GetWinUITypes().IXamlDirectObject)
{
assign.Values[i] = new XamlDirectObjectFromObjectNode(assign.Values[0], context.GetWinUITypes().IXamlDirectObject);
}
}
}
return(node);
}
public IXamlAstNode Transform(AstTransformationContext context, IXamlAstNode node)
{
if (node is XamlAstClrProperty prop)
{
if (prop.DeclaringType.Assembly == context.GetWinUITypes().WinUIControlsAssembly)
{
IXamlField propertyIndexMaybe = context.GetWinUITypes().XamlPropertyIndex.Fields.FirstOrDefault(f => f.Name == $"{prop.DeclaringType.Name}_{prop.Name}");
if (propertyIndexMaybe != null)
{
prop.Setters.Insert(0, new XamlDirectSetter(context.GetWinUITypes(), prop.Getter.ReturnType, prop.DeclaringType, propertyIndexMaybe));
foreach (var adder in XamlTransformHelpers.FindPossibleAdders(context, prop.Getter.ReturnType))
{
if (adder.Parameters.Count == 1)
{
prop.Setters.Add(new XamlDirectAdderSetter(context.GetWinUITypes(), adder.Parameters[0], prop.DeclaringType, propertyIndexMaybe));
}
}
return(prop);
}
IXamlField eventIndexMaybe = context.GetWinUITypes().XamlEventIndex.Fields.FirstOrDefault(f => f.Name == $"{prop.DeclaringType.Name}_{prop.Name}");
if (eventIndexMaybe != null)
{
prop.Setters.Insert(0, new XamlDirectEventSetter(context.GetWinUITypes(), prop.Setters[0].Parameters[0], prop.DeclaringType, eventIndexMaybe));
return(prop);
}
}
}
return(node);
}
public IXamlAstNode Transform(AstTransformationContext context, IXamlAstNode node)
{
if (node is XamlAstClrProperty prop)
{
IXamlProperty dependencyPropertyProp = prop.DeclaringType.Properties
.FirstOrDefault(p => p.Getter?.IsStatic == true &&
p.Name == prop.Name + "Property" &&
p.PropertyType == context.GetWinUITypes().DependencyProperty);
if (dependencyPropertyProp is null)
{
return(node);
}
return(new DependencyProperty(prop, dependencyPropertyProp, context.GetWinUITypes()));
}
return(node);
}