My JSF Books/Videos My JSF Tutorials OmniFaces/JSF PPTs
JSF 2.3 Tutorial
JSF Caching Tutorial
JSF Navigation Tutorial
JSF Scopes Tutorial
JSF Page Author Beginner's Guide
OmniFaces 2.3 Tutorial Examples
OmniFaces 2.2 Tutorial Examples
JSF Events Tutorial
OmniFaces Callbacks Usages
JSF State Tutorial
JSF and Design Patterns
JSF 2.3 New Features (2.3-m04)
Introduction to OmniFaces
25+ Reasons to use OmniFaces in JSF
OmniFaces Validators
OmniFaces Converters
JSF Design Patterns
Mastering OmniFaces
Reusable and less-verbose JSF code

My JSF Resources ...

Java EE Guardian
Member of JCG Program
Member MVB DZone
Blog curated on ZEEF
OmniFaces is an utility library for JSF, including PrimeFaces, RichFaces, ICEfaces ...

.

.

.

.

.

.

.

.


[OmniFaces Utilities] - Find the right JSF OmniFaces 2 utilities methods/functions

Search on blog

Petition by Java EE Guardians

Twitter

duminică, 3 iulie 2016

[OmniFaces utilities (2.4)] Get the source of the currently invoked action


[OmniFaces utilities] The getCurrentActionSource() method returns the source of the currently invoked action, or null if there is none, which may happen when the current request is not a postback request at all, or when the view has been changed by for example a successful navigation. If the latter is the case, you'd better invoke this method before navigation.

Method:
Usage:

import org.omnifaces.util.Components;
...
UIComponent action = Components.getCurrentActionSource();

You can see several examples of using this method as:

- check whether the given component has invoked the form submit (hasInvokedSubmit()):

public static boolean hasInvokedSubmit(UIComponent component) {
 UIComponent source = getCurrentActionSource();
 return source != null && source.equals(component);
}

- get the currently invoked UI command component (getCurrentCommand()):

public static UICommand getCurrentCommand() {
 UIComponent source = getCurrentActionSource();
 return source instanceof UICommand ? (UICommand) source : null;
}

Niciun comentariu :

Trimiteți un comentariu

JSF BOOKS COLLECTION

Postări populare

Visitors Starting 4 September 2015

Locations of Site Visitors