public override PropertyDescriptorCollection GetProperties(ITypeDescriptorContext context, object value, Attribute[] attributes)
{
PropertiesContainer obj = (value as PropertiesContainer);
if (obj == null)
{
return(new PropertyDescriptorCollection(new PropertyDescriptor[] {}));
}
List <Property> propertyList = obj.PropertyList;
PropertyDescriptor[] props = new PropertyDescriptor[propertyList.Count];
// Create the list of property descriptors.
for (int i = 0; i < propertyList.Count; i++)
{
Property property = propertyList[i];
string name = property.Name;
UITypeEditor editor = null;
PropertyDocumentation documentation = property.GetDocumentation();
// Find the editor.
if (documentation != null)
{
editor = obj.PropertyGrid.GetUITypeEditor(documentation.EditorType);
}
// Create the property descriptor.
props[i] = new CustomPropertyDescriptor(
documentation, editor, property.Name, obj.Properties);
}
return(new PropertyDescriptorCollection(props));
}
//-----------------------------------------------------------------------------
// Events
//-----------------------------------------------------------------------------
private void OnPropertyChange(object sender, PropertyValueChangedEventArgs e)
{
CustomPropertyDescriptor propertyDescriptor = e.ChangedItem.PropertyDescriptor as CustomPropertyDescriptor;
Property property = propertyDescriptor.Property;
PropertyDocumentation propertyDoc = property.GetRootDocumentation();
// Handle special property editor-types.
if (propertyDoc != null && propertyDoc.EditorType == "script")
{
string oldValue = e.OldValue.ToString();
string newValue = e.ChangedItem.Value.ToString();
Script oldScript = editorControl.World.GetScript(oldValue);
Script newScript = editorControl.World.GetScript(newValue);
bool isNewScriptInvalid = (newScript == null && newValue.Length > 0);
// When a script property is changed from a hidden script to something else.
if (oldScript != null && oldScript.IsHidden && newScript != oldScript)
{
// Delete the old script from the world (because it is now unreferenced).
editorControl.World.RemoveScript(oldScript);
Console.WriteLine("Deleted unreferenced script '" + oldValue + "'");
// Don't allow the user to reference other hidden scripts.
if (newScript != null && newScript.IsHidden)
{
isNewScriptInvalid = true;
}
}
// Show a message if the script is invalid.
if (isNewScriptInvalid)
{
MessageBox.Show("'" + newValue + "' is not a valid script name.");
}
}
}