MainClass.java Source code

Introduction

Here is the source code for MainClass.java

Source

import org.eclipse.jface.dialogs.IInputValidator;
import org.eclipse.jface.dialogs.InputDialog;
import org.eclipse.jface.window.ApplicationWindow;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class MainClass extends ApplicationWindow {
    public MainClass() {
        super(null);
    }

    public void run() {
        setBlockOnOpen(true);
        open();
        Display.getCurrent().dispose();
    }

    protected void configureShell(Shell shell) {
        super.configureShell(shell);
        shell.setText("Send Message");
        shell.setSize(500, 400);

        InputDialog dlg = new InputDialog(Display.getCurrent().getActiveShell(), "", "Enter 5-8 characters", "info",
                new LengthValidator());
        if (dlg.open() == Window.OK) {
            System.out.println(dlg.getValue());
        }
    }

    public static void main(String[] args) {
        new MainClass().run();
    }
}

class LengthValidator implements IInputValidator {
    public String isValid(String newText) {
        int len = newText.length();
        if (len < 5)
            return "Too short";
        if (len > 8)
            return "Too long";
        return null;
    }
}