|
public static FromObject ( object v ) : |
||
| v | object | |
| return | ||
public static void SetValue(INativeDependencyObjectWrapper wrapper, DependencyProperty dp, object value)
{
Type object_type;
if (dp == null)
{
throw new ArgumentNullException("property");
}
CheckNativeAndThread(wrapper);
if (dp.DeclaringType != null && !dp.IsAttached)
{
if (!dp.DeclaringType.IsAssignableFrom(wrapper.GetType()))
{
throw new System.ArgumentException(string.Format("The DependencyProperty '{2}', registered on type {0} can't be used to set a value on an object of type {1}", dp.DeclaringType.AssemblyQualifiedName, wrapper.GetType().AssemblyQualifiedName, dp.Name));
}
}
if (value == null)
{
using (var val = new Value {
k = NativeMethods.dependency_property_get_property_type(dp.Native), IsNull = true
}) {
var v = val;
NativeMethods.dependency_object_set_value(wrapper.NativeHandle, dp.Native, ref v);
}
return;
}
if (value == DependencyProperty.UnsetValue)
{
// Setting to UnsetValue appears to be equivalent to ClearValue
ClearValue(wrapper, dp);
return;
}
// XXX we need this to work with all
// INativeDependencyObjectWrapper, I expect..
// but right now the only one other than DO is
// Application, which doesn't have any
// settable properties, so we're safe for now.
if (wrapper is DependencyObject)
{
dp.Validate((DependencyObject)wrapper, dp, value);
}
object_type = value.GetType();
bool type_valid = false;
if (dp.PropertyType.IsGenericTypeDefinition)
{
Type t = object_type;
while (t != null)
{
if (dp.PropertyType.IsAssignableFrom(t))
{
type_valid = true;
break;
}
if (t.IsGenericType && !t.IsGenericTypeDefinition)
{
t = t.GetGenericTypeDefinition();
}
else
{
t = t.BaseType;
}
}
}
else
{
type_valid = dp.PropertyType.IsAssignableFrom(object_type);
}
if (!type_valid)
{
throw new ArgumentException(string.Format("The DependencyProperty '{3}.{2}', whose property type is {0} can't be set to value whose type is {1}", dp.PropertyType.FullName, object_type.FullName, dp.Name, dp.DeclaringType.FullName));
}
using (var val = Value.FromObject(value, dp is CustomDependencyProperty)) {
var v = val;
NativeMethods.dependency_object_set_value(wrapper.NativeHandle, dp.Native, ref v);
}
}
