com.sun.faces.application.ActionListenerImpl Maven / Gradle / Ivy
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package com.sun.faces.application;
import javax.faces.FacesException;
import javax.faces.application.Application;
import javax.faces.application.NavigationHandler;
import javax.faces.component.ActionSource;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.el.EvaluationException;
import javax.faces.el.MethodBinding;
import javax.faces.el.MethodNotFoundException;
import javax.faces.event.ActionEvent;
import javax.faces.event.ActionListener;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.text.MessageFormat;
import com.sun.faces.util.FacesLogger;
/**
* This action listener implementation processes action events during the
* Apply Request Values or Invoke Application
* phase of the request processing lifecycle (depending upon the
* immediate
property of the {@link ActionSource} that
* queued this event. It invokes the specified application action method,
* and uses the logical outcome value to invoke the default navigation handler
* mechanism to determine which view should be displayed next.
*/
public class ActionListenerImpl implements ActionListener {
// Log instance for this class
private static final Logger LOGGER = FacesLogger.APPLICATION.getLogger();
// --------------------------------------------- Methods From ActionListener
@SuppressWarnings("deprecation")
@Override
public void processAction(ActionEvent event) {
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.fine(MessageFormat.format("processAction({0})",
event.getComponent().getId()));
}
UIComponent source = event.getComponent();
ActionSource actionSource = (ActionSource) source;
FacesContext context = FacesContext.getCurrentInstance();
Application application = context.getApplication();
Object invokeResult;
String outcome = null;
MethodBinding binding;
binding = actionSource.getAction();
if (binding != null) {
try {
if (null != (invokeResult = binding.invoke(context, null))) {
outcome = invokeResult.toString();
}
// else, default to null, as assigned above.
} catch (MethodNotFoundException e) {
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.log(Level.FINE, e.getMessage(), e);
}
throw new FacesException
(binding.getExpressionString() + ": " + e.getMessage(),
e);
}
catch (EvaluationException e) {
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.log(Level.FINE, e.getMessage(), e);
}
throw new FacesException
(binding.getExpressionString() + ": " + e.getMessage(),
e);
}
}
// Retrieve the NavigationHandler instance..
NavigationHandler navHandler = application.getNavigationHandler();
// Invoke nav handling..
String toFlowDocumentId = (String) source.getAttributes().get(ActionListener.TO_FLOW_DOCUMENT_ID_ATTR_NAME);
if (null == toFlowDocumentId) {
navHandler.handleNavigation(context,
(null != binding) ?
binding.getExpressionString() : null,
outcome);
} else {
navHandler.handleNavigation(context,
(null != binding) ?
binding.getExpressionString() : null,
outcome, toFlowDocumentId);
}
// Trigger a switch to Render Response if needed
context.renderResponse();
}
}