/**
* Returns a list of {@link StyleSheet} that shall be generated to the client for the specified
* execution.
*
* @param exec the execution (never null)
* @param wapp the Web application. If null, exec.getDesktop().getWebApp() is used. So you have to
* specify it if the execution is not associated with desktop (a fake execution, such as
* JSP/DSP).
* @param deviceType the device type, such as ajax. If null, exec.getDesktop().getDeviceType() is
* used. So you have to specify it if the execution is not associated with desktop (a fake
* execution).
*/
public static final List<StyleSheet> getStyleSheets(
Execution exec, WebApp wapp, String deviceType) {
if (wapp == null) wapp = exec.getDesktop().getWebApp();
if (deviceType == null) deviceType = exec.getDesktop().getDeviceType();
final Configuration config = wapp.getConfiguration();
final Set<String> disabled = config.getDisabledThemeURIs();
final List<StyleSheet> sses = new LinkedList<StyleSheet>(); // a list of StyleSheet
for (LanguageDefinition langdef : LanguageDefinition.getByDeviceType(deviceType)) {
for (StyleSheet ss : langdef.getStyleSheets()) {
if (!disabled.contains(ss.getHref())) sses.add(ss);
}
}
// Process configuration
final ThemeProvider themeProvider = config.getThemeProvider();
if (themeProvider != null) {
final List<Object> orgss = new LinkedList<Object>();
for (StyleSheet ss : sses) {
final String href = ss.getHref();
if (href != null && href.length() > 0)
orgss.add(ss.getMedia() != null ? ss : href); // we don't support getContent
}
final String[] hrefs = config.getThemeURIs();
for (int j = 0; j < hrefs.length; ++j) orgss.add(hrefs[j]);
sses.clear();
final Collection<?> res = themeProvider.getThemeURIs(exec, orgss);
if (res != null) {
for (Object re : res) {
sses.add(
re instanceof StyleSheet ? (StyleSheet) re : new StyleSheet((String) re, "text/css"));
}
}
} else {
final String[] hrefs = config.getThemeURIs();
for (int j = 0; j < hrefs.length; ++j) sses.add(new StyleSheet(hrefs[j], "text/css"));
}
return sses;
}
/**
* Process asynchronous update requests from the client.
*
* @since 3.0.0
*/
protected void process(Session sess, HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
final String errClient = request.getHeader("ZK-Error-Report");
if (errClient != null)
if (log.debugable())
log.debug("Error found at client: " + errClient + "\n" + Servlets.getDetail(request));
// parse desktop ID
final WebApp wapp = sess.getWebApp();
final WebAppCtrl wappc = (WebAppCtrl) wapp;
final AuDecoder audec = getAuDecoder(wapp);
final String dtid = audec.getDesktopId(request);
if (dtid == null) {
// Bug 1929139: incomplete request (IE only)
if (log.debugable()) {
final String msg = "Incomplete request\n" + Servlets.getDetail(request);
log.debug(msg);
}
response.sendError(467, "Incomplete request");
return;
}
Desktop desktop = getDesktop(sess, dtid);
if (desktop == null) {
final String cmdId = audec.getFirstCommand(request);
if (!"rmDesktop".equals(cmdId))
desktop = recoverDesktop(sess, request, response, wappc, dtid);
if (desktop == null) {
response.setIntHeader("ZK-Error", response.SC_GONE); // denote timeout
sessionTimeout(request, response, wapp, dtid);
return;
}
}
WebManager.setDesktop(request, desktop);
// reason: a new page might be created (such as include)
final String sid = request.getHeader("ZK-SID");
if (sid != null) // Some client might not have ZK-SID
response.setHeader("ZK-SID", sid);
// parse commands
final Configuration config = wapp.getConfiguration();
final List aureqs;
boolean keepAlive = false;
try {
final boolean timerKeepAlive = config.isTimerKeepAlive();
aureqs = audec.decode(request, desktop);
for (Iterator it = aureqs.iterator(); it.hasNext(); ) {
final String cmdId = ((AuRequest) it.next()).getCommand();
keepAlive = !(!timerKeepAlive && Events.ON_TIMER.equals(cmdId)) && !"dummy".equals(cmdId);
// dummy is used for PollingServerPush for piggyback
if (keepAlive) break; // done
}
} catch (Throwable ex) {
log.warningBriefly(ex);
responseError(request, response, Exceptions.getMessage(ex));
return;
}
if (aureqs.isEmpty()) {
final String errmsg = "Illegal request: cmd required";
log.debug(errmsg);
responseError(request, response, errmsg);
return;
}
((SessionCtrl) sess).notifyClientRequest(keepAlive);
// if (log.debugable()) log.debug("AU request: "+aureqs);
final DesktopCtrl desktopCtrl = (DesktopCtrl) desktop;
final Execution exec = new ExecutionImpl(getServletContext(), request, response, desktop, null);
if (sid != null) ((ExecutionCtrl) exec).setRequestId(sid);
final AuWriter out = AuWriters.newInstance();
out.setCompress(_compress);
out.open(
request,
response,
desktop.getDevice().isSupported(Device.RESEND)
? getProcessTimeout(config.getResendDelay())
: 0);
// Note: getResendDelay() might return nonpositive
try {
wappc.getUiEngine().execUpdate(exec, aureqs, out);
} catch (RequestOutOfSequenceException ex) {
log.warning(ex.getMessage());
response.setHeader("ZK-SID", sid);
response.setIntHeader("ZK-Error", AuResponse.SC_OUT_OF_SEQUENCE);
}
out.close(request, response);
}