| /************************************************************** |
| * |
| * 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 com.sun.star.wizards.ui.event; |
| |
| import com.sun.star.awt.XControl; |
| import com.sun.star.lang.EventObject; |
| import com.sun.star.uno.UnoRuntime; |
| import com.sun.star.wizards.common.Helper; |
| import com.sun.star.wizards.common.PropertyNames; |
| |
| import java.lang.reflect.InvocationTargetException; |
| import java.util.Hashtable; |
| |
| /** |
| * This class is a base class for listener classes. |
| * It uses a hashtable to map between a ComponentName, EventName and a MethodInvokation Object. |
| * To use this class do the following:<br/> |
| * <list> |
| * <li>Write a subclass which implements the needed Listener(s).</li> |
| * in the even methods, use invoke(...). |
| * <li>When instanciating the component, register the subclass as the event listener.</li> |
| * <li>Write the methods which should be performed when the event occures.</li> |
| * <li>call the "add" method, to define a component-event-action mapping.</li> |
| * </list> |
| * @author rpiterman |
| */ |
| public class AbstractListener |
| { |
| |
| private Hashtable mHashtable = new Hashtable(); |
| |
| /** Creates a new instance of AbstractListener */ |
| public AbstractListener() |
| { |
| } |
| |
| public void add(String componentName, String eventName, String methodName, Object target) |
| { |
| try |
| { |
| add(componentName, eventName, new MethodInvocation(methodName, target)); |
| } |
| catch (Exception ex) |
| { |
| ex.printStackTrace(); |
| } |
| } |
| |
| public void add(String componentName, String eventName, MethodInvocation mi) |
| { |
| mHashtable.put(componentName + eventName, mi); |
| } |
| |
| public MethodInvocation get(String componentName, String eventName) |
| { |
| return (MethodInvocation) mHashtable.get(componentName + eventName); |
| } |
| |
| public Object invoke(String componentName, String eventName, Object param) |
| { |
| try |
| { |
| MethodInvocation mi = get(componentName, eventName); |
| if (mi != null) |
| { |
| return mi.invoke(param); |
| } |
| else |
| { |
| return null; |
| } |
| } |
| catch (InvocationTargetException ite) |
| { |
| |
| System.out.println("======================================================="); |
| System.out.println("=== Note: An Exception was thrown which should have ==="); |
| System.out.println("=== caused a crash. I caught it. Please report this ==="); |
| System.out.println("=== to openoffice.org ==="); |
| System.out.println("======================================================="); |
| |
| ite.printStackTrace(); |
| |
| } |
| catch (IllegalAccessException iae) |
| { |
| iae.printStackTrace(); |
| } |
| catch (Exception ex) |
| { |
| System.out.println("======================================================="); |
| System.out.println("=== Note: An Exception was thrown which should have ==="); |
| System.out.println("=== caused a crash. I Catched it. Please report this =="); |
| System.out.println("=== to openoffice.org =="); |
| System.out.println("======================================================="); |
| ex.printStackTrace(); |
| } |
| |
| return null; |
| } |
| |
| /** |
| * Rerurns the property "name" of the Object which is the source of the event. |
| */ |
| public static String getEventSourceName(EventObject eventObject) |
| { |
| XControl xControl = UnoRuntime.queryInterface(XControl.class, eventObject.Source); |
| return (String) Helper.getUnoPropertyValue(xControl.getModel(), PropertyNames.PROPERTY_NAME, String.class); |
| } |
| } |