[jEdit-Syntax-devel] re actions under jdk1.4

[Colin B. <Col...@as...>]

Hi Gabriel,

I had the same problem with my project. It worked fine under JDK1.3 but
shortcuts didn't work under 1.4. To fix it I had to change the visibility of
the processKeyEvent(KeyEvent) method in my frame class from protected to
public E.G.

public void processKeyEvent(KeyEvent evt) {
    super.processKeyEvent(evt);
}

And I added the following file to my project. In application startup I call
the static init method _only_ if running under 1.4. If you make the call via
reflection then by leaving the Java14.java file out of the build you can
build your project under 1.3

/*
 * Java14.java - Java 2 version 1.4 API calls
 *
 * Copyright (C) 2001, 2002 Slava Pestov
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
import java.awt.Component;
import java.awt.DefaultKeyboardFocusManager;
import java.awt.KeyboardFocusManager;
import java.awt.Window;
import java.awt.event.KeyEvent;

import javax.swing.JInternalFrame;

import net.sourceforge.squirrel_sql.client.gui.BaseSheet;
/**
 * This file must be compiled with a JDK 1.4 or higher javac. If you are
using
 * an older Java version and wish to compile from source, you can safely
leave
 * this file out.
 *
 * @author Slava Pestov
 */
public class Java14 {
	public static void init() {
 		KeyboardFocusManager.setCurrentKeyboardFocusManager(new
DefaultKeyboardFocusManager() {
			public boolean postProcessKeyEvent(KeyEvent evt) {
				if(!evt.isConsumed()) {
					Component comp =
(Component)evt.getSource();
					for(;;) {
						if(comp instanceof
BaseSheet) {
	
((BaseSheet)comp).processKeyEvent(evt);
							return true;
						} else if(comp == null ||
comp instanceof Window) {
							break;
						} else {
							comp =
comp.getParent();
						}
					}
				}

				return super.postProcessKeyEvent(evt);
			}

		});
	}
}

This code is basically the modifications that Slava Pestov made to fix a
similar problem with his jEdit text editor. BaseSheet is my JInternalFrame
subclass that contains the jEdit text area, replace it with your own.

Col

============================


From: Gabriel Hauber <gabjon@op...>
<http://images.sourceforge.net//images/msg.gif> actions under jdk1.4  
2002-03-07 16:42

Hi,
 
 Just wondering if I'm alone in experiencing this.
 
 I'm using JDK1.4, and I'm embedding the JEditTextArea component within a 
   JFrame's content pane.
 
 I've defined toolbar/menu actions within the JFrame for things like 
 save/cut/copy/paste/etc.  However, when typing within the text area, 
 none of the associated keyboard shortcuts seem to work.
 
 I believe it worked under JDK1.3, but can't easily check now as a main 
 part of my application is dependent on 1.4
 
 Anyone have any ideas?
 
 Thanks,
 
 Gabriel
 
 -- 
 ----------------------------------------------------------
   Gabriel J. Hauber -- Freelance Software Engineer
   eXtreme Programming/UML/Java/XML/JUnit/AmigaDE/VP/VPUnit
   Brisbane, Australia
   http://www.gabrielhauber.com
----------------------------------------------------------