public GravatarPanel(final String idParam, final String emailParam) {
super(idParam);
if (emailParam == null) {
LOGGER.debug(new StringResourceModel("nullEmailParamLogMessage", this, null).getString());
addDefaultGravatarImage();
} else {
try {
final byte[] hash = MessageDigest.getInstance(MD5).digest(emailParam.getBytes());
final StringBuilder hashString = new StringBuilder();
for (final byte elementLocal : hash) {
final String hex = Integer.toHexString(elementLocal);
if (hex.length() == 1) {
hashString.append(ZERO);
hashString.append(hex.charAt(hex.length() - 1));
} else {
hashString.append(hex.substring(hex.length() - 2));
}
}
final Image imgLocal = new Image(WICKET_ID_GRAVATAR_IMG, (IResource) null);
imgLocal.add(
AttributeModifierFactory.newAttributeAppenderForSrc(
"http://www.gravatar.com/avatar/" + hashString.toString() + DOT_JPG));
imgLocal.add(
AttributeModifierFactory.newAttributeAppenderForAlt(
new StringResourceModel("gravatarAlt", this, null) + emailParam + DOT));
add(imgLocal);
} catch (final NoSuchAlgorithmException ex) {
LOGGER.info(
new StringResourceModel("md5HashAlgoNotFoundLogMessage", this, null).getString(), ex);
addDefaultGravatarImage();
}
}
}
private void addDefaultGravatarImage() {
final Image imgLocal = new Image(WICKET_ID_GRAVATAR_IMG, (IResource) null);
imgLocal.add(
AttributeModifierFactory.newAttributeAppenderForSrc(
new StringResourceModel("defaultGravatarImageHref", this, null).getString()));
imgLocal.add(
AttributeModifierFactory.newAttributeAppenderForAlt(
new StringResourceModel("defaultGravatarImageAlt", this, null).getString()));
add(imgLocal);
}