ISelectionValidator (Eclipse Platform API Specification)

All Known Implementing Classes:

CopyResourceAction, MoveResourceAction, ResourceNavigatorMoveAction
```
public interface ISelectionValidator
```
For validating selections in some selection dialogs.
Clients should implement this interface to define specialized selection validators.

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  String isValid(Object selection)
  Returns a string indicating whether the given selection is valid.

- Method Detail
  - isValid
```
String isValid(Object selection)
```
    Returns a string indicating whether the given selection is valid. If the result is null, the selection is considered to be valid; if the result is non-empty, it contains the error message to be displayed to the user.
    
    Parameters:
    
    selection - the selection to be validated
    
    Returns:
    
    the error message, or null indicating that the value is valid