| /******************************************************************************* |
| * Copyright (c) 2000, 2005 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.ui.dialogs; |
| |
| /** |
| * For validating selections in some selection dialogs. |
| * <p> |
| * Clients should implement this interface to define specialized selection |
| * validators. |
| * </p> |
| */ |
| public interface ISelectionValidator { |
| /** |
| * Returns a string indicating whether the given selection is valid. If the |
| * result is <code>null</code>, the selection is considered to be valid; if the result is |
| * non-empty, it contains the error message to be displayed to the user. |
| * |
| * @param selection the selection to be validated |
| * @return the error message, or <code>null</code> indicating |
| * that the value is valid |
| */ |
| public String isValid(Object selection); |
| } |
