/// <summary>
/// This is overridden to return a property descriptors for the object represented by this type
/// descriptor along with extra property descriptors for its child properties.
/// </summary>
/// <param name="attributes">An array of attributes to use as a filter or null for no filter</param>
/// <returns>Returns a <see cref="PropertyDescriptorCollection"/> that contains property descriptors for
/// the object and its child properties.</returns>
public override PropertyDescriptorCollection GetProperties(Attribute[] attributes)
{
// This seems to ignore the filter so GetChildProperties() will get rid of all non-browsable
// properties.
PropertyDescriptorCollection props = base.GetProperties(attributes);
List<PropertyDescriptor> newProps = new List<PropertyDescriptor>();
this.GetChildProperties(null, String.Empty, attributes, props, newProps);
if(newProps.Count != 0)
{
// The collection is read-only so we'll need to create a new one
PropertyDescriptor[] tempProps = new PropertyDescriptor[props.Count + newProps.Count];
props.CopyTo(tempProps, 0);
newProps.CopyTo(tempProps, props.Count);
props = new PropertyDescriptorCollection(tempProps);
// Now we'll remove hidden top-level properties
for(int idx = 0; idx < props.Count; idx++)
if(props[idx].Attributes[typeof(HidePropertyAttribute)] != null)
{
props.RemoveAt(idx);
idx--;
}
}
return props;
}
private void AssertReadOnly (PropertyDescriptorCollection descriptors, string testCase)
{
MockPropertyDescriptor mockPropertyDescr = new MockPropertyDescriptor (
"Date", DateTime.Now);
try {
descriptors.Add (mockPropertyDescr);
Assert.Fail (testCase + "#1");
} catch (NotSupportedException) {
// read-only collection cannot be modified
}
// ensure read-only check if performed before value is checked
try {
descriptors.Add (null);
Assert.Fail (testCase + "#2");
} catch (NotSupportedException) {
// read-only collection cannot be modified
}
try {
descriptors.Clear ();
Assert.Fail (testCase + "#3");
} catch (NotSupportedException) {
// read-only collection cannot be modified
}
try {
descriptors.Insert (0, mockPropertyDescr);
Assert.Fail (testCase + "#4");
} catch (NotSupportedException) {
// read-only collection cannot be modified
}
// ensure read-only check if performed before value is checked
try {
descriptors.Insert (0, null);
Assert.Fail (testCase + "#5");
} catch (NotSupportedException) {
// read-only collection cannot be modified
}
try {
descriptors.Remove (mockPropertyDescr);
Assert.Fail (testCase + "#6");
} catch (NotSupportedException) {
// read-only collection cannot be modified
}
// ensure read-only check if performed before value is checked
try {
descriptors.Remove (null);
Assert.Fail (testCase + "#7");
} catch (NotSupportedException) {
// read-only collection cannot be modified
}
try {
descriptors.RemoveAt (0);
Assert.Fail (testCase + "#8");
} catch (NotSupportedException) {
// read-only collection cannot be modified
}
IList list = (IList) descriptors;
Assert.IsTrue (((IList) descriptors).IsReadOnly, testCase + "#9");
Assert.IsTrue (((IList) descriptors).IsFixedSize, testCase + "#10");
try {
list.Add (mockPropertyDescr);
Assert.Fail (testCase + "#11");
} catch (NotSupportedException) {
// read-only collection cannot be modified
}
// ensure read-only check if performed before value is checked
try {
list.Add (null);
Assert.Fail (testCase + "#12");
} catch (NotSupportedException) {
// read-only collection cannot be modified
}
try {
list.Clear ();
Assert.Fail (testCase + "#13");
} catch (NotSupportedException) {
// read-only collection cannot be modified
}
try {
list.Insert (0, mockPropertyDescr);
Assert.Fail (testCase + "#14");
} catch (NotSupportedException) {
// read-only collection cannot be modified
}
// ensure read-only check if performed before value is checked
try {
list.Insert (0, null);
Assert.Fail (testCase + "#15");
} catch (NotSupportedException) {
// read-only collection cannot be modified
}
try {
list.Remove (mockPropertyDescr);
Assert.Fail (testCase + "#16");
} catch (NotSupportedException) {
// read-only collection cannot be modified
}
// ensure read-only check if performed before value is checked
try {
list.Remove (null);
Assert.Fail (testCase + "#17");
} catch (NotSupportedException) {
// read-only collection cannot be modified
}
try {
list.RemoveAt (0);
Assert.Fail (testCase + "#18");
} catch (NotSupportedException) {
// read-only collection cannot be modified
}
try {
list[0] = mockPropertyDescr;
Assert.Fail (testCase + "#19");
} catch (NotSupportedException) {
// read-only collection cannot be modified
}
// ensure read-only check if performed before value is checked
try {
list[0] = null;
Assert.Fail (testCase + "#20");
} catch (NotSupportedException) {
// read-only collection cannot be modified
}
IDictionary dictionary = (IDictionary) descriptors;
Assert.IsTrue (dictionary.IsReadOnly, testCase + "#21");
Assert.IsTrue (dictionary.IsFixedSize, testCase + "#22");
try {
dictionary.Add ("test", mockPropertyDescr);
Assert.Fail (testCase + "#23");
} catch (NotSupportedException) {
// read-only collection cannot be modified
}
// value is checked before read-only check
try {
dictionary.Add ("test", null);
Assert.Fail (testCase + "#24");
} catch (ArgumentException) {
// read-only collection cannot be modified
}
try {
dictionary.Clear ();
Assert.Fail (testCase + "#25");
} catch (NotSupportedException) {
// read-only collection cannot be modified
}
try {
dictionary[0] = mockPropertyDescr;
Assert.Fail (testCase + "#26");
} catch (NotSupportedException) {
// read-only collection cannot be modified
}
// ensure read-only check if performed before value is checked
try {
dictionary[0] = null;
Assert.Fail (testCase + "#27");
} catch (NotSupportedException) {
// read-only collection cannot be modified
}
}
