| /*=============================================================================# |
| # Copyright (c) 2009, 2021 Stephan Wahlbrink and others. |
| # |
| # This program and the accompanying materials are made available under the |
| # terms of the Eclipse Public License 2.0 which is available at |
| # https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0 |
| # which is available at https://www.apache.org/licenses/LICENSE-2.0. |
| # |
| # SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 |
| # |
| # Contributors: |
| # Stephan Wahlbrink <sw@wahlbrink.eu> - initial API and implementation |
| #=============================================================================*/ |
| |
| package org.eclipse.statet.rj.eclient.graphics; |
| |
| import java.util.List; |
| |
| import org.eclipse.statet.jcommons.lang.NonNullByDefault; |
| |
| |
| /** |
| * Manager for a collection of R graphics. |
| */ |
| @NonNullByDefault |
| public interface ERGraphicsManager { |
| |
| |
| interface Listener { |
| |
| void graphicAdded(ERGraphic graphic); |
| |
| void graphicRemoved(ERGraphic graphic); |
| |
| } |
| |
| interface ListenerShowExtension extends Listener { |
| |
| /** |
| * If the listener can show the graphic |
| * |
| * <code>-1</code> not supported |
| * <code>>= 0</code> priority (higher more appropriate) |
| * @param graphic the graphic to show |
| * @return |
| */ |
| int canShowGraphic(ERGraphic graphic); |
| |
| /** |
| * If the listener was selected (highest priority) to show the graphic |
| * |
| * @param graphic the graphic to show |
| */ |
| void showGraphic(ERGraphic graphic); |
| |
| } |
| |
| |
| void addListener(Listener listener); |
| |
| void removeListener(Listener listener); |
| |
| List<? extends ERGraphic> getAllGraphics(); |
| |
| } |