| /******************************************************************************* |
| * Copyright (c) 2000, 2010 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.gef; |
| |
| import java.util.List; |
| |
| /** |
| * This class provides keyboard accessibility support for the {@link Handle |
| * Handles} of the primary-selected {@link EditPart}. Handles are grabbable |
| * regions on the screen. Typically the user will grab a handle by pressing and |
| * holding the mouse button. This function must also be available via the |
| * keyboard for accessibility reasons. Even mouse Users will appreciate the |
| * fine-grained control offered by the keyboard for operations like "nudging". |
| * <P> |
| * The SelectionTool is the primary client for Handles. When it is active, the |
| * PERIOD keystroke will cycle through the list of Accessibile locations |
| * (Points) supplied by the current EditPart. The "current EditPart" is defined |
| * as the EditPart with primary selection. |
| */ |
| |
| public interface AccessibleHandleProvider { |
| |
| /** |
| * Returns a list of Points in <B>absolute</B> coordinates where |
| * {@link Handle Handles} are located. {@link Tool Tools} that work with |
| * Handles should use these locations when operating in accesible keyboard |
| * modes. |
| * |
| * @return A list of absolute locations (Points relative to the Viewer's |
| * Control); cannot be <code>null</code> |
| */ |
| List getAccessibleHandleLocations(); |
| |
| } |
