| /******************************************************************************* |
| * 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.draw2d; |
| |
| import org.eclipse.draw2d.geometry.Point; |
| |
| /** |
| * An object to which a {@link Connection} will be anchored. If the |
| * ConnectionAnchor moves, the Connection should move with it. |
| */ |
| public interface ConnectionAnchor { |
| |
| /** |
| * Adds a listener interested in the movement of this ConnectionAnchor. |
| * |
| * @param listener |
| * The AnchorListener to be added |
| */ |
| void addAnchorListener(AnchorListener listener); |
| |
| /** |
| * Returns the location where the Connection should be anchored in absolute |
| * coordinates. The anchor may use the given reference Point to calculate |
| * this location. |
| * |
| * @param reference |
| * The reference Point in absolute coordinates |
| * @return The anchor's location |
| */ |
| Point getLocation(Point reference); |
| |
| /** |
| * Returns the IFigure that contains this ConnectionAnchor. Moving this |
| * figure will cause the anchor to move with it. |
| * |
| * @return The IFigure that contains this ConnectionAnchor |
| */ |
| IFigure getOwner(); |
| |
| /** |
| * Returns the reference point for this anchor in absolute coordinates. This |
| * might be used by another anchor to determine its own location (i.e. |
| * {@link ChopboxAnchor}). |
| * |
| * @return The reference Point |
| */ |
| Point getReferencePoint(); |
| |
| /** |
| * Removes the listener. |
| * |
| * @param listener |
| * The AnchorListener to be removed |
| */ |
| void removeAnchorListener(AnchorListener listener); |
| |
| } |