| /******************************************************************************* |
| * 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.PointList; |
| |
| /** |
| * Locator used to place a {@link RotatableDecoration} on a {@link Connection}. |
| * The decoration can be placed at the source or target end of the connection |
| * figure. The default connection implementation uses a {@link DelegatingLayout} |
| * which requires locators. |
| */ |
| public class ArrowLocator extends ConnectionLocator { |
| |
| /** |
| * Constructs an ArrowLocator associated with passed connection and tip |
| * location (either {@link ConnectionLocator#SOURCE} or |
| * {@link ConnectionLocator#TARGET}). |
| * |
| * @param connection |
| * The connection associated with the locator |
| * @param location |
| * Location of the arrow decoration |
| * @since 2.0 |
| */ |
| public ArrowLocator(Connection connection, int location) { |
| super(connection, location); |
| } |
| |
| /** |
| * Relocates the passed in figure (which must be a |
| * {@link RotatableDecoration}) at either the start or end of the |
| * connection. |
| * |
| * @param target |
| * The RotatableDecoration to relocate |
| */ |
| public void relocate(IFigure target) { |
| PointList points = getConnection().getPoints(); |
| RotatableDecoration arrow = (RotatableDecoration) target; |
| arrow.setLocation(getLocation(points)); |
| |
| if (getAlignment() == SOURCE) |
| arrow.setReferencePoint(points.getPoint(1)); |
| else if (getAlignment() == TARGET) |
| arrow.setReferencePoint(points.getPoint(points.size() - 2)); |
| } |
| |
| } |