/** {@inheritDoc} */
@Override
public void serviceRequest(final Request request) {
String triggerId = request.getParameter(WServlet.AJAX_TRIGGER_PARAM_NAME);
AjaxOperation ajaxOperation = AjaxHelper.getCurrentOperation();
if (ajaxOperation == null) {
throw new IllegalStateException("No AJAX operation available for trigger " + triggerId + ".");
}
ComponentWithContext triggerWithContext = AjaxHelper.getCurrentTriggerAndContext();
if (triggerWithContext == null) {
throw new IllegalStateException(
"No component/context available for AJAX trigger " + triggerId + ".");
}
UIContext uic = UIContextHolder.getCurrent();
// Reset the focus for this new request.
uic.setFocussed(null, null);
// We've hit the action phase, so we do want focus on this app.
uic.setFocusRequired(true);
// Process trigger only
if (isProcessTriggerOnly(triggerWithContext, ajaxOperation)) {
// Get user context
UIContext tuic = triggerWithContext.getContext();
UIContextHolder.pushContext(tuic);
try {
WComponent trigger = triggerWithContext.getComponent();
trigger.serviceRequest(request);
// Manually invoke laters as the InvokeLaters in the service request is not run due to the
// trigger
// having a "parent"
tuic.doInvokeLaters();
} finally {
UIContextHolder.popContext();
}
}
// GET only supports the above scenarios
else if ("GET".equals(request.getMethod())) {
throw new IllegalStateException(
"GET is not supported for the AJAX trigger " + triggerId + ".");
} else {
// service the request
super.serviceRequest(request);
}
}
/**
* Paint the ajax container response.
*
* @param renderContext the render context
* @param operation the ajax operation
*/
private void paintContainerResponse(
final RenderContext renderContext, final AjaxOperation operation) {
WebXmlRenderContext webRenderContext = (WebXmlRenderContext) renderContext;
XmlStringBuilder xml = webRenderContext.getWriter();
// Get trigger's context
ComponentWithContext trigger = AjaxHelper.getCurrentTriggerAndContext();
if (trigger == null) {
throw new SystemException("No context available for trigger " + operation.getTriggerId());
}
xml.appendTagOpen("ui:ajaxTarget");
xml.appendAttribute("id", operation.getTargetContainerId());
xml.appendAttribute("action", "replaceContent");
xml.appendClose();
// Paint targets - Assume targets are in the same context as the trigger
UIContextHolder.pushContext(trigger.getContext());
try {
for (String targetId : operation.getTargets()) {
ComponentWithContext target = null;
if (targetId.equals(operation.getTriggerId())) {
target = trigger;
} else {
target = WebUtilities.getComponentById(targetId, true);
if (target == null) {
log.warn("Could not find ajax target to render " + target);
continue;
}
}
target.getComponent().paint(renderContext);
}
} finally {
UIContextHolder.popContext();
}
xml.appendEndTag("ui:ajaxTarget");
}