jcaptchafield

jCaptcha Field

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Simple form field implementation to add a captchafield to a form.

This module is build on the jcaptcha package. For the extended documentation go to: http://jcaptcha.sourceforge.net/apidocs/1.0/ http://jcaptcha.octo.com/confluence/display/general/Home

You will also need the jcaptcha-1.0-all.jar: http://sourceforge.net/projects/jcaptcha/files/jcaptcha/jcaptcha-1.0/jcaptcha-1.0-bin.zip/download

Note: The first time the application starts, this component needs to connect to a webservice. This can take a couple of seconds, but its only needed once.

You can only use this field only once per screen. You can not use it multiple times on the same screen.

Sample code

public class VaadintestApplication extends Application {
	@Override
	public void init() {
		final Window mainWindow = new Window("Vaadintest Application");
		Form form = new Form();
		final CaptchaField captchaField = new CaptchaField(this);
		form.addField("Captcha", captchaField);
		final TextField text = new TextField();
		form.addField("Captcha input", text);
		
		Button button = new Button();
		button.addListener(new Button.ClickListener() {
			@Override
			public void buttonClick(ClickEvent event) {
				captchaField.validateCaptcha((String)text.getValue());
			}
		});
		form.getFooter().addComponent(button);
		mainWindow.addComponent(form);
		setMainWindow(mainWindow);
	}

}

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