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package com.sun.faces.application;
import com.sun.faces.config.WebConfiguration;
import com.sun.faces.flow.FlowDiscoveryCDIExtension;
import com.sun.faces.util.FacesLogger;
import com.sun.faces.util.Util;
import java.io.IOException;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.enterprise.inject.spi.Bean;
import javax.enterprise.inject.spi.BeanManager;
import javax.enterprise.inject.spi.Producer;
import javax.faces.context.FacesContext;
import javax.faces.flow.Flow;
import javax.faces.flow.FlowHandler;
import javax.faces.flow.builder.FlowDefinition;
class JavaFlowLoaderHelper {
private static final Logger LOGGER = FacesLogger.APPLICATION.getLogger();
synchronized void loadFlows(FacesContext context, FlowHandler flowHandler) throws IOException {
BeanManager beanManager = (BeanManager)
Util.getCDIBeanManager(context.getExternalContext().getApplicationMap());
Bean<?> extensionImpl = beanManager.resolve(beanManager.getBeans(FlowDiscoveryCDIExtension.class));
if (null == extensionImpl) {
if (LOGGER.isLoggable(Level.SEVERE)) {
LOGGER.log(Level.SEVERE, "Unable to obtain {0} from CDI implementation. Flows described with {1} are unavailable.",
new String [] {
FlowDiscoveryCDIExtension.class.getName(),
FlowDefinition.class.getName()
});
}
return;
}
javax.enterprise.context.spi.CreationalContext<?> creationalContext = beanManager.createCreationalContext(extensionImpl);
FlowDiscoveryCDIExtension myExtension =
(FlowDiscoveryCDIExtension) beanManager.getReference(extensionImpl,
FlowDiscoveryCDIExtension.class, creationalContext);
List<Producer<Flow>> flowProducers = myExtension.getFlowProducers();
WebConfiguration config = WebConfiguration.getInstance();
if (!flowProducers.isEmpty()) {
enableClientWindowModeIfNecessary(context);
}
for (Producer<Flow> cur : flowProducers) {
Flow toAdd = cur.produce(beanManager.<Flow>createCreationalContext(null));
if (null == toAdd) {
LOGGER.log(Level.SEVERE, "Flow producer method {0}() returned null. Ignoring.", cur.toString());
} else {
flowHandler.addFlow(context, toAdd);
config.setHasFlows(true);
}
}
}
private void enableClientWindowModeIfNecessary(FacesContext context) {
WebConfiguration config = WebConfiguration.getInstance(context.getExternalContext());
String optionValue = config.getOptionValue(WebConfiguration.WebContextInitParameter.ClientWindowMode);
boolean clientWindowNeedsEnabling = false;
if ("none".equals(optionValue)) {
clientWindowNeedsEnabling = true;
String featureName =
WebConfiguration.WebContextInitParameter.ClientWindowMode.getQualifiedName();
LOGGER.log(Level.WARNING,
"{0} was set to none, but Faces Flows requires {0} is enabled. Setting to ''url''.", new Object[]{featureName});
} else if (null == optionValue) {
clientWindowNeedsEnabling = true;
}
if (clientWindowNeedsEnabling) {
config.setOptionValue(WebConfiguration.WebContextInitParameter.ClientWindowMode, "url");
}
}
}