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This is the master POM file for Oracle's Implementation of the JSF 2.2 Specification.
/*
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* and Distribution License("CDDL") (collectively, the "License"). You
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* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
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* file and include the License file at packager/legal/LICENSE.txt.
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package com.sun.faces.component.behavior;
import java.io.Serializable;
import java.util.ArrayDeque;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import javax.faces.application.Application;
import javax.faces.component.behavior.AjaxBehavior;
import javax.faces.component.behavior.ClientBehavior;
import javax.faces.component.behavior.ClientBehaviorHint;
import javax.faces.component.behavior.ClientBehaviorHolder;
import javax.faces.context.FacesContext;
/**
* An instance of the class is used to
* manage {@link AjaxBehavior} instances.
*
* @since 2.0
*/
public class AjaxBehaviors implements Serializable {
private static final String AJAX_BEHAVIORS = "javax.faces.component.AjaxBehaviors";
private ArrayDeque behaviorStack = null;
public AjaxBehaviors() {
behaviorStack = new ArrayDeque();
}
// Returns the AjaxBehaviors instance, creating it if necessary.
public static AjaxBehaviors getAjaxBehaviors(FacesContext context,
boolean createIfNull) {
Map attrs = context.getAttributes();
AjaxBehaviors ajaxBehaviors = (AjaxBehaviors)attrs.get(AJAX_BEHAVIORS);
if ((ajaxBehaviors == null) && createIfNull) {
ajaxBehaviors = new AjaxBehaviors();
attrs.put(AJAX_BEHAVIORS, ajaxBehaviors);
}
return ajaxBehaviors;
}
// Adds AjaxBehaviors to the specified ClientBehaviorHolder
public void addBehaviors(FacesContext context,
ClientBehaviorHolder behaviorHolder) {
if ((behaviorStack == null) || behaviorStack.isEmpty()){
return;
}
// Loop over pushed Behaviors and add to the ClientBehaviorHolder.
// Note that we add most recently pushed behaviors first. That
// way the nearest behaviors take precedence. Behaviors that were
// pushed earlier won't be added since we'll already have a
// submitting behavior attached.
Iterator descendingIter = behaviorStack.descendingIterator();
while (descendingIter.hasNext()) {
descendingIter.next().addBehavior(context, behaviorHolder);
}
}
/**
* Push the {@link AjaxBehavior} instance onto the List.
*
* @param ajaxBehavior the {@link AjaxBehavior} instance
* @param eventName the name of the event that the behavior is associated
* with.
*
* @since 2.0
*/
public void pushBehavior(FacesContext context,
AjaxBehavior ajaxBehavior,
String eventName) {
behaviorStack.add(new BehaviorInfo(context, ajaxBehavior, eventName));
}
/**
* Pop the last {@link AjaxBehavior} instance
* from the List.
*
* @since 2.0
*/
public void popBehavior() {
if (behaviorStack.size() > 0) {
behaviorStack.removeLast();
}
}
// Helper class for storing and creating/applying inherited
// AjaxBehaviors
public static class BehaviorInfo implements Serializable {
private String eventName;
private Object behaviorState;
private static final long serialVersionUID = -7679229822647712959L;
public BehaviorInfo(FacesContext context,
AjaxBehavior ajaxBehavior,
String eventName) {
this.eventName = eventName;
// We don't actually need the AjaxBehavior - just
// its state.
behaviorState = ajaxBehavior.saveState(context);
}
public void addBehavior(FacesContext context,
ClientBehaviorHolder behaviorHolder) {
String myEventName = this.eventName;
if (myEventName == null) {
myEventName = behaviorHolder.getDefaultEventName();
// No event name, default or otherwise - we're done
if (myEventName == null) {
return;
}
}
// We only add the
if (shouldAddBehavior(behaviorHolder, myEventName)) {
ClientBehavior behavior = createBehavior(context);
behaviorHolder.addClientBehavior(myEventName, behavior);
}
}
// Tests whether we should add an AjaxBehavior to the specified
// ClientBehaviorHolder/event name.
private boolean shouldAddBehavior(ClientBehaviorHolder behaviorHolder,
String eventName) {
// First need to make sure that this ClientBehaviorHolder
// supports the specified event type.
if (!behaviorHolder.getEventNames().contains(eventName)) {
return false;
}
// Check for a submitting behavior already attached.
// If we've already got one, we don't add another.
Map> allBehaviors =
behaviorHolder.getClientBehaviors();
List eventBehaviors = allBehaviors.get(eventName);
if ((eventBehaviors == null) || (eventBehaviors.isEmpty())) {
return true;
}
for (ClientBehavior behavior : eventBehaviors) {
Set hints = behavior.getHints();
if (hints.contains(ClientBehaviorHint.SUBMITTING)) {
return false;
}
}
return true;
}
// Creates the AjaxBehavior
private ClientBehavior createBehavior(FacesContext context) {
Application application = context.getApplication();
// Re-create the instance via the Application
AjaxBehavior behavior = (AjaxBehavior)application.createBehavior(
AjaxBehavior.BEHAVIOR_ID);
// And re-initialize its state
behavior.restoreState(context, behaviorState);
return behavior;
}
private BehaviorInfo() {
}
}
}