| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to you under the Apache License, |
| * Version 2.0 (the "License"); you may not use this file except in |
| * compliance with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.pivot.wtk; |
| |
| /** |
| * Defines event listener methods that pertain to rollups. Developers register |
| * for such events by adding themselves to a rollup's list of "rollup listeners" |
| * (see {@link Rollup#getRollupListeners()}). |
| */ |
| public interface RollupListener { |
| /** |
| * Rollup listener adapter. |
| */ |
| public static class Adapter implements RollupListener { |
| @Override |
| public void headingChanged(Rollup rollup, Component previousHeading) { |
| // empty block |
| } |
| |
| @Override |
| public void contentChanged(Rollup rollup, Component previousContent) { |
| // empty block |
| } |
| |
| @Override |
| public void collapsibleChanged(Rollup rollup) { |
| // empty block |
| } |
| } |
| |
| /** |
| * Called when a rollup's heading component changed. |
| * |
| * @param rollup The rollup whose heading changed. |
| * @param previousHeading What the heading used to be. |
| */ |
| public void headingChanged(Rollup rollup, Component previousHeading); |
| |
| /** |
| * Called when a rollup's content component changed. |
| * |
| * @param rollup The rollup that has new content. |
| * @param previousContent What the content used to be. |
| */ |
| public void contentChanged(Rollup rollup, Component previousContent); |
| |
| /** |
| * Called when a rollup's collapsible flag has changed. |
| * |
| * @param rollup The rollup that changed. |
| */ |
| public void collapsibleChanged(Rollup rollup); |
| } |