EditFunctionDialog.java

/**
 * EditFunctionDialog.java
 * @author Fabio G. Cozman
 *  Iinspired on EditFunctionDialog.java by Sreekanth Nagarajan.
 * Copyright 1996 - 1999, Fabio G. Cozman,
 *          Carnergie Mellon University, Universidade de Sao Paulo
 * fgcozman@usp.br, http://www.cs.cmu.edu/~fgcozman/home.html
 *
 * The JavaBayes distribution 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),
 * provided that this notice and the name of the author appear in all
 * copies. Upon request to the author, some of the packages in the
 * JavaBayes distribution can be licensed under the GNU Lesser General
 * Public License as published by the Free Software Foundation (either
 * version 2 of the License, or (at your option) any later version).
 * If you're using the software, please notify fgcozman@usp.br so
 * that you can receive updates and patches. JavaBayes is distributed
 * "as is", 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 the JavaBayes distribution. If not, write to the Free
 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

package JavaBayesInterface;

import InferenceGraphs.*;

import java.awt.*;
import java.util.*;

class EditFunctionDialog extends Dialog {
    // Variables used to construct the dialog.
    Frame parent;
    EditFunctionPanel efp;
    Panel buttons;
    Button ok_button, dismiss_button;

    // Constants used to construct the dialog.
    private final static int TOP_INSET = 5;
    private final static int LEFT_INSET = 10;
    private final static int RIGHT_INSET = 10;
    private final static int BOTTOM_INSET = 0;
    
    // Labels for the various elements of the dialog.
    private final static String ok_label = "Apply";
    private final static String dialog_title = "Edit Function";
    private final static String dismiss_label = "Dismiss";

    /**
     * Default constructor for an EditFunctionDialog.
     */
    public EditFunctionDialog(Frame parent, InferenceGraph ig,
    InferenceGraphNode ign) {
        super(parent, dialog_title, true);
        this.parent = parent;
        setLayout(new BorderLayout());
        efp = dispatch(ig, ign);
        buttons = new Panel();
        buttons.setLayout(new FlowLayout(FlowLayout.CENTER));
        ok_button = new Button(ok_label);
        dismiss_button = new Button(dismiss_label);
        buttons.add(ok_button);
        buttons.add(dismiss_button);
        add("Center", efp);
        add("South", buttons);
        pack();
    }

    /*
     * Create the appropriate instance of EditFunctionPanel,
     * based on the function in the node.
     */
    private EditFunctionPanel dispatch(InferenceGraph ig, InferenceGraphNode ign) {
        if (ign.is_credal_set())
            return(new EditCredalSet(ig, ign));
        else
            return(new EditProbability(this, ig, ign));
    }

    /**
     * Customized show method.
     */
    public void show() {
    	Rectangle bounds = getParent().bounds();
    	Rectangle abounds = bounds();

    	move(bounds.x + (bounds.width - abounds.width)/ 2,
    	     bounds.y + (bounds.height - abounds.height)/2);

    	super.show();
    }

    /**
     * Customize insets method.
     */
    public Insets insets() {
        Insets ins = super.insets();
        return(new Insets(ins.top + TOP_INSET, ins.left + LEFT_INSET,
                          ins.bottom + BOTTOM_INSET, ins.right + RIGHT_INSET));
    }

    /**
     * Handle the possible destruction of the window.
     */
    public boolean handleEvent(Event evt) {
        if (evt.id == Event.WINDOW_DESTROY)
            dispose();
        return(super.handleEvent(evt));
    }
    
    /**
     * Handle events in the dialog.
     */
    public boolean action(Event evt, Object arg) {
        // Check whether to dismiss
        if (evt.target == dismiss_button) {
            efp.dismiss();
	        dispose();
	        return(true);
	    } else if (evt.target == ok_button) {
	        efp.accept();
	        return(true);
	    }
        return(super.action(evt, arg));
	}
}