Interface specifications and utilities
| Class | IProxyWidget | IProxyWidget is a widget that can be attached to a proxy. |
| Class | IValidatableProxyWidget | IValidatableProxyWidget extends IProxyWidget with validation support |
| Class | IEasyCombo | Undocumented |
| Class | AbstractGladeAdaptor | Abstract class that define the functionality an class that handle |
| Class | ISearchFilter | Undocumented |