private static String getWindowStateOrDefault(UpdateNavigationalStateResponse navResponse) {
org.gatein.pc.api.WindowState state = navResponse.getWindowState();
if (state == null) {
state = org.gatein.pc.api.WindowState.NORMAL;
}
return state.toString();
}
private static String getPortletModeOrDefault(UpdateNavigationalStateResponse navResponse) {
Mode mode = navResponse.getMode();
if (mode == null) {
mode = Mode.VIEW;
}
return mode.toString();
}
/**
* This method is called when the javax.portlet.Event is supported by the current portlet stored
* in the Portlet Caontainer
*
* <p>The processEvent() method can also generates IPC events and hence the portal itself will
* call the ProcessEventsActionListener once again
*/
public static <S, C extends Serializable, I> List<javax.portlet.Event> processEvent(
UIPortlet<S, C> uiPortlet, javax.portlet.Event event) {
log.trace("Process Event: " + event.getName() + " for portlet: " + uiPortlet.getState());
try {
PortalRequestContext context =
(PortalRequestContext) WebuiRequestContext.getCurrentInstance();
//
EventInvocation eventInvocation = uiPortlet.create(EventInvocation.class, context);
//
eventInvocation.setName(event.getQName());
eventInvocation.setPayload(event.getValue());
//
PortletInvocationResponse piResponse = uiPortlet.invoke(eventInvocation);
//
ExoPortletInstanceContext instanceCtx =
(ExoPortletInstanceContext) eventInvocation.getInstanceContext();
if (instanceCtx.getModifiedContext() != null) {
StatefulPortletContext<C> updatedCtx =
(StatefulPortletContext<C>) instanceCtx.getModifiedContext();
C portletState = updatedCtx.getState();
uiPortlet.update(portletState);
}
// todo: handle the error response better than this.
if (!(piResponse instanceof UpdateNavigationalStateResponse)) {
if (piResponse instanceof ErrorResponse) {
ErrorResponse errorResponse = (ErrorResponse) piResponse;
throw (Exception) errorResponse.getCause();
} else {
throw new Exception(
"Unexpected response type ["
+ piResponse
+ "]. Expected a UpdateNavigationResponse or an ErrorResponse.");
}
}
UpdateNavigationalStateResponse navResponse = (UpdateNavigationalStateResponse) piResponse;
//
/*
* Update the portlet window state according to the action output
* information
*
* If the current node is displaying a usual layout page, also tells the
* page which portlet to render or not when the state is maximized
*/
WindowState state = new WindowState(getWindowStateOrDefault(navResponse));
setNextState(uiPortlet, state);
// update the portlet with the next mode to display
PortletMode mode = new PortletMode(getPortletModeOrDefault(navResponse));
setNextMode(uiPortlet, mode);
StateString navState = navResponse.getNavigationalState();
if (navState != null) {
uiPortlet.setNavigationalState(navResponse.getNavigationalState());
}
setupPublicRenderParams(uiPortlet, navResponse.getPublicNavigationalStateUpdates());
// TODO: (mwringe) add this to the UpdateNavigationStateResponse.Event class instead of here
class PortletEvent implements javax.portlet.Event {
QName qName;
Serializable value;
public PortletEvent(QName qName, Serializable value) {
this.qName = qName;
this.value = value;
}
public String getName() {
return qName.getLocalPart();
}
public QName getQName() {
return qName;
}
public Serializable getValue() {
return value;
}
}
List<UpdateNavigationalStateResponse.Event> nsEvents = navResponse.getEvents();
List<javax.portlet.Event> events = new ArrayList<javax.portlet.Event>(nsEvents.size());
if (nsEvents != null && !nsEvents.isEmpty()) {
for (UpdateNavigationalStateResponse.Event nsEvent : nsEvents) {
javax.portlet.Event portletEvent =
new PortletEvent(nsEvent.getName(), nsEvent.getPayload());
events.add(portletEvent);
}
}
return events;
} catch (Exception e) {
log.error("Problem while processesing event for the portlet: " + uiPortlet.getState(), e);
}
return null;
}
private void handleUpdateNavigationalStateResponse(
UpdateNavigationalStateResponse navStateResponse,
UIPortlet<S, C> uiPortlet,
PortalRequestContext prcontext)
throws Exception {
/*
* Update the portlet window state according to the action output
* information
*
* If the current node is displaying a usual layout page, also tells the
* page which portlet to render or not when the state is maximized
*/
// Note: we should only update the WindowState if the
// UpdateNavigationalStateResponse.getWindowState is not null,
// otherwise it means the WindowState has not changed and we should use the current value.
if (navStateResponse.getWindowState() != null) {
WindowState state = new WindowState(getWindowStateOrDefault(navStateResponse));
setNextState(uiPortlet, state);
}
// update the portlet with the next mode to display
// Note: we should only update the Mode if the UpdateNavigationalStateResponse.getMode is not
// null,
// otherwise it means the mode has not changed and we should use the current value.
if (navStateResponse.getMode() != null) {
PortletMode mode = new PortletMode(getPortletModeOrDefault(navStateResponse));
setNextMode(uiPortlet, mode);
}
/*
* Cache the render parameters in the UI portlet component to handle the
* navigational state. Each time a portlet is rendered (except using
* directly a RenderURL) those parameters are added to the portlet request
* to preserve the portlet state among all the portal clicks
*/
//
StateString navigationalState = navStateResponse.getNavigationalState();
if (navigationalState != null) {
uiPortlet.setNavigationalState(navigationalState);
}
// update the public render parameters with the changes from the invocation
setupPublicRenderParams(uiPortlet, navStateResponse.getPublicNavigationalStateUpdates());
/*
* Handle the events returned by the action output and broadcast a new UI
* event to the ProcessEventsActionListener that will then target the
* portlet container service directly
*/
// TODO: (mwringe) add this to the UpdateNavigationStateResponse.Event class instead of here
class PortletEvent implements javax.portlet.Event {
QName qName;
Serializable value;
public PortletEvent(QName qName, Serializable value) {
this.qName = qName;
this.value = value;
}
public String getName() {
return qName.getLocalPart();
}
public QName getQName() {
return qName;
}
public Serializable getValue() {
return value;
}
}
List<UpdateNavigationalStateResponse.Event> nsEvents = navStateResponse.getEvents();
List<javax.portlet.Event> events = new ArrayList<javax.portlet.Event>(nsEvents.size());
if (nsEvents != null && !nsEvents.isEmpty()) {
for (UpdateNavigationalStateResponse.Event nsEvent : nsEvents) {
if (uiPortlet.supportsPublishingEvent(nsEvent.getName())) {
javax.portlet.Event portletEvent =
new PortletEvent(nsEvent.getName(), nsEvent.getPayload());
events.add(portletEvent);
}
}
}
if (events != null) {
prcontext.setAttribute(PORTLET_EVENTS, new EventsWrapper(events));
uiPortlet.createEvent("ProcessEvents", Phase.PROCESS, prcontext).broadcast();
}
}