Examples with AppendingStringBuffer org.apache.wicket.util.string.AppendingStringBuffer used on opensource projects

Example 1 with AppendingStringBuffer

use of org.apache.wicket.util.string.AppendingStringBuffer in project gitblit by gitblit.

the class SessionlessForm method onComponentTagBody.

/**
	 * Append an additional hidden input tag that forces Wicket to correctly
	 * determine the destination page class even after a session expiration or
	 * a server restart.
	 *
	 * @param markupStream
	 *            The markup stream
	 * @param openTag
	 *            The open tag for the body
	 */
@Override
protected void onComponentTagBody(final MarkupStream markupStream, final ComponentTag openTag) {
    // render the hidden bookmarkable page field
    AppendingStringBuffer buffer = new AppendingStringBuffer(HIDDEN_DIV_START);
    buffer.append("<input type=\"hidden\" name=\"").append(WebRequestCodingStrategy.BOOKMARKABLE_PAGE_PARAMETER_NAME).append("\" value=\":").append(pageClass.getName()).append("\" />");
    // do not collide with any child wicket:id of the form.
    if (pageParameters != null) {
        for (String key : pageParameters.keySet()) {
            Component c = get(key);
            if (c != null) {
                // this form has a field id which matches the
                // parameter name, skip embedding a hidden value
                log.warn(MessageFormat.format("Skipping page parameter \"{0}\" from sessionless form hidden fields because it collides with a form child wicket:id", key));
                continue;
            }
            String value = pageParameters.getString(key);
            buffer.append("<input type=\"hidden\" name=\"").append(recode(key)).append("\" value=\"").append(recode(value)).append("\" />");
        }
    }
    buffer.append("</div>");
    getResponse().write(buffer);
    super.onComponentTagBody(markupStream, openTag);
}