/** Check the post box. */
private void checkPostBox() {
postCharCount.setInnerText(Integer.toString(POST_MAX - postBox.getText().length()));
if (POST_MAX - postBox.getText().length() < 0) {
postCharCount.addClassName(style.postCharCountOverLimit());
} else {
postCharCount.removeClassName(style.postCharCountOverLimit());
}
if ((postBox.getText().length() > 0 && POST_MAX - postBox.getText().length() >= 0)
|| attachment != null) {
postButton.removeStyleName(style.postButtonInactive());
} else {
postButton.addStyleName(style.postButtonInactive());
}
}
