[Wonder-cvs] [OS-JIRA] Created: (WONDER-52) Ajax-ify ERCaptcha

[Ben L. (JIRA) <jir...@ob...>]

Ajax-ify ERCaptcha
------------------

                 Key: WONDER-52
                 URL: http://issues.objectstyle.org/jira/browse/WONDER-52
             Project: Project Wonder
          Issue Type: Bug
            Reporter: Ben Lawson
         Assigned To: Anjo Krank
            Priority: Minor


Adding a method that updates the captcha without appending all the extra appendToResponse code to allow Ajax updates of ERCaptcha, and preserve other form data:

public WOActionResults ajaxResetCaptcha(WOContext context) {
		byte[] captchaChallengeAsJpeg = null;
		ByteArrayOutputStream captchaOutputStream = new ByteArrayOutputStream();
		try {
			BufferedImage challenge = ERCaptcha.captchaService().getImageChallengeForID(context.elementID());
			JPEGImageEncoder captchaEncoder = JPEGCodec.createJPEGEncoder(captchaOutputStream);
			captchaEncoder.encode(challenge);
			_captcha = new NSData(captchaOutputStream.toByteArray());
		}
		catch (Throwable e) {
			log.error("Failed to create JPEG for Captcha.", e);
		}
		
		return null;
	} 

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