5.11. Button

The Button is a user interface component that is normally used for finalizing input and initiating some action. When the user clicks a button, a Button.ClickEvent is emitted. A listener that inherits the Button.ClickListener interface can handle clicks with the buttonClick() method.

public class TheButton extends CustomComponent
                       implements Button.ClickListener {
    Button thebutton;

    public TheButton() {
        // Create a Button with the given caption.
        thebutton = new Button ("Do not push this button");
        
        // Listen for ClickEvents.
        thebutton.addListener(this);

        setCompositionRoot(thebutton);
    }
    
    /** Handle click events for the button. */
    public void buttonClick (Button.ClickEvent event) {
        thebutton.setCaption ("Do not push this button again");
    }
}