source: other-projects/trunk/gs3-release-maker/tasks/sshtaskdef/src/mindbright/util/AWTConvenience.java@ 14627

/******************************************************************************
 *
 * Copyright (c) 1998,99 by Mindbright Technology AB, Stockholm, Sweden.
 *                 www.mindbright.se, [email protected]
 *
 * 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.
 *
 *****************************************************************************
 * $Author: mats $
 * $Date: 2000/02/12 11:37:56 $
 * $Name: rel1-2-1 $
 *****************************************************************************/
package mindbright.util;

import java.awt.*;
import java.awt.event.*;

public abstract class AWTConvenience {

    public static class CloseAction implements ActionListener {
    Dialog dialog;
    public CloseAction(Dialog dialog) {
        this.dialog = dialog;
    }
    public void actionPerformed(ActionEvent e) {
        dialog.setVisible(false);
    }
    }

    public static class CloseAdapter extends WindowAdapter {
    Button b;
    public CloseAdapter(Button b) {
        this.b = b;
    }
    public void windowClosing(WindowEvent e) {
        b.dispatchEvent(new ActionEvent(b, ActionEvent.ACTION_PERFORMED,
                        b.getActionCommand()));
    }
    }

    public static class OKCancelAdapter extends KeyAdapter {
    
    protected static boolean isMRJ = false;
  
    static {
        try { // see <http://developer.apple.com/qa/java/java17.html>
        isMRJ = (System.getProperty("mrj.version") != null);
        } catch (Exception e) {
        // applets may not be able to do this
        }
    }
 
    Button butOK;
    Button butCancel;
  
    public OKCancelAdapter(Button ok, Button cancel) {
        this.butOK = ok;
        this.butCancel = cancel;
    }
  
    protected void pushButton(Button target) {
        if (isMRJ) { // see <http://developer.apple.com/qa/java/java01.html>
        target.dispatchEvent(new KeyEvent(target, KeyEvent.KEY_PRESSED, 
                          System.currentTimeMillis(), 0, KeyEvent.VK_ENTER, 
                          (char)KeyEvent.VK_ENTER));
        } else { // still can work, just no visual feedback
        target.dispatchEvent(new ActionEvent(target, ActionEvent.ACTION_PERFORMED,
                             target.getActionCommand()));
        }
    }
  
    public void keyReleased(KeyEvent e) {
        switch(e.getKeyCode()) {
        case KeyEvent.VK_ENTER : if (butOK != null) pushButton(butOK); break;
        case KeyEvent.VK_ESCAPE : if (butCancel != null) pushButton(butCancel); break;
        }
    }
    }

    public final static void placeDialog(Dialog diag) {
    Dimension sDim = Toolkit.getDefaultToolkit().getScreenSize();
    Dimension mDim = diag.getSize();
    int x, y;
    x = ((sDim.width / 2) - (mDim.width / 2));
    y = ((sDim.height / 2) - (mDim.height / 2));
    diag.setLocation(x, y);
    }

    public final static void setBackgroundOfChildren(Container container) {
    Component[] children = container.getComponents();
    container.setBackground(SystemColor.menu);
    for(int i = 0; i < children.length; i++) {
        if(children[i] instanceof Choice)
        continue;
        children[i].setBackground(SystemColor.menu);

        if(children[i] instanceof Container) {
        setBackgroundOfChildren((Container)children[i]);
        } else if(children[i] instanceof Choice) {
        continue;
        } else if(children[i] instanceof TextField || children[i] instanceof List) {
        children[i].setBackground(SystemColor.text);
        } else {
        children[i].setBackground(SystemColor.menu);
        }
    }
    }

    public final static void setKeyListenerOfChildren(Container container, KeyListener listener,
                              Class typeOfChild) {
    Component[] children = container.getComponents();
    for(int i = 0; i < children.length; i++) {
        if(children[i] instanceof Choice)
        continue;
        if(children[i] instanceof Container) {
        setKeyListenerOfChildren((Container)children[i], listener, typeOfChild);
        } else if(children[i] != null && (typeOfChild == null ||
                          typeOfChild.isInstance(children[i]))) {
        children[i].addKeyListener(listener);
        }
    }
    }

}