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package com.sun.faces.application.annotation;
import javax.faces.application.Application;
import javax.faces.event.ListenerFor;
import javax.faces.event.ComponentSystemEventListener;
import javax.faces.context.FacesContext;
import javax.faces.component.UIComponent;
import javax.faces.event.SystemEventListener;
/**
* {@link RuntimeAnnotationHandler} responsible for processing {@link ListenerFor} annotations.
*/
class ListenerForHandler implements RuntimeAnnotationHandler {
private ListenerFor[] listenersFor;
// ------------------------------------------------------------ Constructors
public ListenerForHandler(ListenerFor[] listenersFor) {
this.listenersFor = listenersFor;
}
// ----------------------------------- Methods from RuntimeAnnotationHandler
@SuppressWarnings({"UnusedDeclaration"})
@Override
public void apply(FacesContext ctx, Object... params) {
Object listener;
UIComponent target;
if (params.length == 2) {
// handling @ListenerFor on a Renderer
listener = params[0];
target = (UIComponent) params[1];
} else {
// handling @ListenerFor on a UIComponent
listener = params[0];
target = (UIComponent) params[0];
}
if (listener instanceof ComponentSystemEventListener) {
for (int i = 0, len = listenersFor.length; i < len; i++) {
target.subscribeToEvent(listenersFor[i].systemEventClass(),
(ComponentSystemEventListener) listener);
}
}
else if (listener instanceof SystemEventListener) {
Class sourceClassValue = null;
Application app = ctx.getApplication();
for (int i = 0, len = listenersFor.length; i < len; i++) {
sourceClassValue = listenersFor[i].sourceClass();
if (sourceClassValue == Void.class) {
app.subscribeToEvent(listenersFor[i].systemEventClass(),
(SystemEventListener) listener);
}
else {
app.subscribeToEvent(listenersFor[i].systemEventClass(),
listenersFor[i].sourceClass(),
(SystemEventListener) listener);
}
}
}
}
}