/**
* THIS METHOD IS NOT PART OF THE WICKET PUBLIC API. DO NOT USE IT.
*
* <p>Temporarily replaces the response with a StringResponse to capture the header output for
* this part of the stream and pass it to {@link IHeaderResponse}.
*
* @see org.apache.wicket.MarkupContainer#renderNext(org.apache.wicket.markup.MarkupStream)
*/
@Override
protected final boolean renderNext(MarkupStream markupStream) {
StringResponse markupHeaderResponse = new StringResponse();
Response oldResponse = getResponse();
RequestCycle.get().setResponse(markupHeaderResponse);
try {
boolean ret = super.renderNext(markupStream);
getHeaderResponse().render(new PageHeaderItem(markupHeaderResponse.getBuffer()));
return ret;
} finally {
RequestCycle.get().setResponse(oldResponse);
}
}
/**
* Runs the configured {@link IResponseFilter}s over the constructed Ajax response
*
* @param contentResponse the Ajax {@link Response} body
* @return filtered response
*/
private AppendingStringBuffer invokeResponseFilters(final StringResponse contentResponse) {
AppendingStringBuffer responseBuffer = new AppendingStringBuffer(contentResponse.getBuffer());
List<IResponseFilter> responseFilters =
Application.get().getRequestCycleSettings().getResponseFilters();
if (responseFilters != null) {
for (IResponseFilter filter : responseFilters) {
responseBuffer = filter.filter(responseBuffer);
}
}
return responseBuffer;
}
/**
* @param response
* @return Cleaned up response
*/
private CharSequence getCleanResponse(final StringResponse response) {
CharSequence output = response.getBuffer();
if (output.length() > 0) {
if (output.charAt(0) == '\r') {
for (int i = 2; i < output.length(); i += 2) {
char ch = output.charAt(i);
if (ch != '\r') {
output = output.subSequence(i - 2, output.length());
break;
}
}
} else if (output.charAt(0) == '\n') {
for (int i = 1; i < output.length(); i++) {
char ch = output.charAt(i);
if (ch != '\n') {
output = output.subSequence(i - 1, output.length());
break;
}
}
}
}
return output;
}