public void SetNonXmlReader ()
{
var x = new XData ();
XmlReader r;
x.XmlReader = "<foo/>"; // not allowed. It does *not* raise an error, but the value becomes null.
r = x.XmlReader as XmlReader; // and thus it causes ANE.
}
// SetXmlInstance: receives the value as "object" so the calling code doesn't
// need to load System.Xml.dll types to make the call.
public override void SetXmlInstance(object inst, XamlMember property, XAML3.XData xData)
{
object propInstance = GetValue(inst, property, true);
IXmlSerializable iXmlSerial = propInstance as IXmlSerializable;
if (iXmlSerial == null)
{
throw CreateException((SR.Get(SRID.XmlDataNull, property.Name)));
}
XmlReader reader = xData.XmlReader as XmlReader;
if (reader == null)
{
throw new XamlInternalException(SR.Get(SRID.XmlValueNotReader, property.Name));
}
try
{
iXmlSerial.ReadXml(reader);
}
catch (Exception e)
{
if (CriticalExceptions.IsCriticalException(e))
{
throw;
}
throw CreateException(SR.Get(SRID.SetXmlInstance, property), e);
}
}
public override void SetXmlInstance(object inst, XamlMember property, System.Windows.Markup.XData xData)
{
if (!MemberAccessPermissionDenied || property.IsReadPublic)
{
try
{
_transparentRuntime.SetXmlInstance(inst, property, xData);
return;
}
catch (XamlException e)
{
if (e.InnerException is MethodAccessException)
{
MemberAccessPermissionDenied = true;
}
else
{
throw;
}
}
catch (SecurityException)
{
MemberAccessPermissionDenied = true;
}
}
_elevatedRuntime.SetXmlInstance(inst, property, xData);
return;
}
public void TextSetsXmlReader ()
{
var x = new XData ();
x.Text = "foobar";
Assert.IsNotNull (x.Text, "#3");
var r = x.XmlReader as XmlReader;
Assert.IsNotNull (r, "#4");
Assert.AreEqual (XmlNodeType.None, r.NodeType, "#5");
try {
r.Read (); // invalid xml
Assert.Fail ("#6");
} catch (XmlException) {
}
}
IEnumerable<XamlNodeInfo> GetNodes (XamlMember xm, XamlObject xobj, XamlType overrideMemberType, bool partOfPositionalParameters)
{
// collection items: each item is exposed as a standalone object that has StartObject, EndObject and contents.
if (xm == XamlLanguage.Items) {
foreach (var xn in GetItemsNodes (xm, xobj))
yield return xn;
yield break;
}
// Arguments: each argument is written as a standalone object
if (xm == XamlLanguage.Arguments) {
foreach (var argm in xobj.Type.GetSortedConstructorArguments ()) {
var argv = argm.Invoker.GetValue (xobj.GetRawValue ());
var xarg = new XamlObject (argm.Type, argv);
foreach (var cn in GetNodes (null, xarg))
yield return cn;
}
yield break;
}
// PositionalParameters: items are from constructor arguments, written as Value node sequentially. Note that not all of them are in simple string value. Also, null values are not written as NullExtension
if (xm == XamlLanguage.PositionalParameters) {
foreach (var argm in xobj.Type.GetSortedConstructorArguments ()) {
foreach (var cn in GetNodes (argm, new XamlObject (argm.Type, xobj.GetMemberValue (argm)), null, true))
yield return cn;
}
yield break;
}
if (xm == XamlLanguage.Initialization) {
yield return new XamlNodeInfo (TypeExtensionMethods.GetStringValue (xobj.Type, xm, xobj.GetRawValue (), value_serializer_ctx));
yield break;
}
// Value - only for non-top-level node (thus xm != null)
if (xm != null) {
// overrideMemberType is (so far) used for XamlLanguage.Key.
var xtt = overrideMemberType ?? xm.Type;
if (!xtt.IsMarkupExtension && // this condition is to not serialize MarkupExtension whose type has TypeConverterAttribute (e.g. StaticExtension) as a string.
(xtt.IsContentValue (value_serializer_ctx) || xm.IsContentValue (value_serializer_ctx))) {
// though null value is special: it is written as a standalone object.
var val = xobj.GetRawValue ();
if (val == null) {
if (!partOfPositionalParameters)
foreach (var xn in GetNodes (null, null_object))
yield return xn;
else
yield return new XamlNodeInfo (String.Empty);
}
else
yield return new XamlNodeInfo (TypeExtensionMethods.GetStringValue (xtt, xm, val, value_serializer_ctx));
yield break;
}
}
// collection items: return GetObject and Items.
if (xm != null && xm.Type.IsCollection && !xm.IsWritePublic) {
yield return new XamlNodeInfo (XamlNodeType.GetObject, xobj);
// Write Items member only when there are items (i.e. do not write it if it is empty).
var xnm = new XamlNodeMember (xobj, XamlLanguage.Items);
var en = GetNodes (XamlLanguage.Items, xnm.Value).GetEnumerator ();
if (en.MoveNext ()) {
yield return new XamlNodeInfo (XamlNodeType.StartMember, xnm);
do {
yield return en.Current;
} while (en.MoveNext ());
yield return new XamlNodeInfo (XamlNodeType.EndMember, xnm);
}
yield return new XamlNodeInfo (XamlNodeType.EndObject, xobj);
} else if (xm != null && xm.Type.IsXData) {
var sw = new StringWriter ();
var xw = XmlWriter.Create (sw, new XmlWriterSettings () { OmitXmlDeclaration = true, ConformanceLevel = ConformanceLevel.Auto });
var val = xobj.GetRawValue () as IXmlSerializable;
if (val == null)
yield break; // do not output anything
val.WriteXml (xw);
xw.Close ();
var obj = new XData () { Text = sw.ToString () };
foreach (var xn in GetNodes (null, new XamlObject (XamlLanguage.XData, obj)))
yield return xn;
} else {
// Object - could become Reference
var val = xobj.GetRawValue ();
if (!xobj.Type.IsContentValue (value_serializer_ctx) && val != null) {
string refName = NameResolver.GetName (val);
if (refName != null) {
// The target object is already retrieved, so we don't return the same object again.
NameResolver.SaveAsReferenced (val); // Record it as named object.
// Then return Reference object instead.
foreach (var xn in GetNodes (null, new XamlObject (XamlLanguage.Reference, new Reference (refName))))
yield return xn;
yield break;
} else {
// The object appeared in the xaml tree for the first time. So we store the reference with a unique name so that it could be referenced later.
refName = GetReferenceName (xobj);
if (NameResolver.IsCollectingReferences && NameResolver.Contains (refName))
throw new InvalidOperationException (String.Format ("There is already an object of type {0} named as '{1}'. Object names must be unique.", val.GetType (), refName));
NameResolver.SetNamedObject (refName, val, true); // probably fullyInitialized is always true here.
}
}
yield return new XamlNodeInfo (XamlNodeType.StartObject, xobj);
// If this object is referenced and there is no [RuntimeNameProperty] member, then return Name property in addition.
if (val != null && xobj.Type.GetAliasedProperty (XamlLanguage.Name) == null) {
string name = NameResolver.GetReferencedName (val);
if (name != null) {
var sobj = new XamlObject (XamlLanguage.String, name);
foreach (var cn in GetMemberNodes (new XamlNodeMember (sobj, XamlLanguage.Name), new XamlNodeInfo [] { new XamlNodeInfo (name)}))
yield return cn;
}
}
foreach (var xn in GetObjectMemberNodes (xobj))
yield return xn;
yield return new XamlNodeInfo (XamlNodeType.EndObject, xobj);
}
}
public void SetXmlReader ()
{
var x = new XData ();
x.XmlReader = XmlReader.Create (new StringReader ("<root/>"));
Assert.IsNull (x.Text, "#1");
Assert.IsNotNull (x.XmlReader, "#2");
x.XmlReader = null;
}
public void SetTextNull ()
{
var x = new XData ();
// allowed.
x.Text = null;
}
public void GetXmlReaderWithNullText ()
{
var x = new XData ();
Assert.IsNull (x.Text, "#1");
Assert.IsNull (x.XmlReader, "#2");
}
