errordialog.java

JaNet: Java Neural Network Toolkit resume: A well documented toolkit for designing and training, a

////////////////////////////////////////////////////////////////////////////////////  
//  
//  Copyright (C) 1996 L.  Patocchi & W.Gander
//
//  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.
//
//  Contacts:
//  
//    Project Supervisor
//      W.Hett       [e-mail]
//  
//    Authors
//      W.Gander     [e-mail]
//      L.Patocchi   [e-mail]
//
//  Documentation can be found at:
//
//      http://www.isbiel.ch/Projects/janet/index.html
//
////////////////////////////////////////////////////////////////////////////////////
//
// File : errorDialog.java
//

package jaNet.backprop.gui;

import java.awt.*;

public class errorDialog extends Dialog {

    public Label  labelErrorMsg;
    public Separator separatorH;
    public Button buttonOk;


    public errorDialog(Frame parent, String msg) {

	    super(parent, " ", false);
		
		if(parent == null || msg == null) return;
		
        this.setBackground(Color.lightGray);

        // main panel
    	GridBagLayout grid = new GridBagLayout();
    	int rowHeights[] = {0,10,20,25,25,10};
    	int columnWidths[] = {0,5,125,75,125,5};
    	double rowWeights[] = {0.0,0.0,0.0,0.0,0.0,0.0};
    	double columnWeights[] = {0.0,0.0,1.0,0.0,1.0,0.0};
    	grid.rowHeights = rowHeights;
    	grid.columnWidths = columnWidths;
    	grid.rowWeights = rowWeights;
    	grid.columnWeights = columnWeights;

    	labelErrorMsg = new Label();
    	labelErrorMsg.setText(msg);
    	this.add(labelErrorMsg);

    	separatorH = new Separator(Separator.HORIZONTAL);
    	separatorH.perSide = 0;
    	separatorH.rise = Separator.IN;
    	this.add(separatorH);

    	buttonOk = new Button();
    	buttonOk.setLabel("OK");
    	this.add(buttonOk);

    	// Geometry management
    	GridBagConstraints con = new GridBagConstraints();
    	reset(con);
    	con.gridx = 2;
    	con.gridy = 2;
    	con.gridwidth = 3;
    	con.anchor = GridBagConstraints.CENTER;
    	con.fill = GridBagConstraints.NONE;
    	grid.setConstraints(labelErrorMsg, con);

    	reset(con);
    	con.gridx = 2;
    	con.gridy = 3;
    	con.gridwidth = 3;
    	con.anchor = GridBagConstraints.CENTER;
    	con.fill = GridBagConstraints.BOTH;
    	grid.setConstraints(separatorH, con);

    	reset(con);
    	con.gridx = 3;
    	con.gridy = 4;
    	con.anchor = GridBagConstraints.CENTER;
    	con.fill = GridBagConstraints.HORIZONTAL;
    	grid.setConstraints(buttonOk, con);


    	// Resize behavior management and parent heirarchy
    	setLayout(grid);
	    //{{INIT_CONTROLS
        addNotify();
        //}}
        int h=0,w=0;
        for(int i=0;i<rowHeights.length;i++) h += rowHeights[i];
	    for(int i=0;i<columnWidths.length;i++) w += columnWidths[i];
        resize(insets().left + insets().right + w, insets().top + insets().bottom + h);
    	//setResizable(false);
    	pack();
    }

    public synchronized 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();
    }

    public synchronized void wakeUp() {
    	notify();
    }

    public boolean handleEvent(Event event) {
    	if (event.id == Event.ACTION_EVENT && event.target == buttonOk) {
    	    	clickedButtonOk();
    	    	return true;
    	}
    	else

    	if (event.id == Event.WINDOW_DESTROY) {
    	    hide();
    	    dispose();
    	    return true;
    	}
    	return super.handleEvent(event);
    }

    public void clickedButtonOk() {
		hide();
		dispose();
    }

    private void reset(GridBagConstraints con) {
        con.gridx = GridBagConstraints.RELATIVE;
        con.gridy = GridBagConstraints.RELATIVE;
        con.gridwidth = 1;
        con.gridheight = 1;

        con.weightx = 0;
        con.weighty = 0;
        con.anchor = GridBagConstraints.CENTER;
        con.fill = GridBagConstraints.NONE;

        con.insets = new Insets(0, 0, 0, 0);
        con.ipadx = 0;
        con.ipady = 0;
    }

}