Over a million developers have joined DZone.
{{announcement.body}}
{{announcement.title}}

A Tip for the Fade Effect in Primefaces Components

DZone's Guide to

A Tip for the Fade Effect in Primefaces Components

· Java Zone ·
Free Resource

Verify, standardize, and correct the Big 4 + more– name, email, phone and global addresses – try our Data Quality APIs now at Melissa Developer Portal!

I was trying to fade in a Primefaces panel component that was initially hidden and found it to be somewhat of a struggle. After a bit of googling, the only thing I found out was that I wasn’t the first to come across the problem. Here’s the basic JSF code to use an effect on a panel in response to the button click.

<p:button id="showme" value="Show Me" onclick="return false">
	<p:effect type="fade" event="click" for="myPanel"/>
</p:button>

<h:panelGroup layout="block" id="myPanel" style="display:none">Show Me</h:panelGroup>

This code does nothing because by default the fade effect fades out the component. Looking at the options for the fade gives us no clues either since it claims there are no parameters. The solution is to provide a mode parameter that can be either show or hide which is used for most of the effects. In our case, we want to show the component.

<p:button id="showme" value="Show Me" onclick="return false">
	<p:effect type="fade" event="click" for="myPanel">
		<f:param name="mode" value="'show'"/>
	</p:effect>
</p:button>

<h:panelGroup layout="block" id="myPanel" style="display:none">Show Me</h:panelGroup>

This will show the panel that was initially hidden when you click the button. The only nagging problem is that the button retains its hover style until you click elsewhere in the page.

 

From http://www.andygibson.net/blog/quickbyte/fading-in-primefaces-components/

Developers! Quickly and easily gain access to the tools and information you need! Explore, test and combine our data quality APIs at Melissa Developer Portal – home to tools that save time and boost revenue. Our APIs verify, standardize, and correct the Big 4 + more – name, email, phone and global addresses – to ensure accurate delivery, prevent blacklisting and identify risks in real-time.

Topics:

Opinions expressed by DZone contributors are their own.

{{ parent.title || parent.header.title}}

{{ parent.tldr }}

{{ parent.urlSource.name }}