Wednesday May 15, 2013

Table Pagination with JDeveloper 11.1.1.7

One of the new features listed for JDeveloper 11.1.1.7 is pagination for tables, a frequently requested and long awaited feature (http://www.oracle.com/technetwork/developer-tools/jdev/index-088099.html). The tag documentation about this feature states that to switch pagination on you simply set the scrollPolicy property to page.Truth to be told, there is a little bit more for you to do.

1. You need to set the autoHeightRows property to 0

2. You need to make sure the surrounding container provides a floating layout and doe not stretch (e.g. using a panelGroupLayout)

3. To bring the table into shape (full width) you then set styleClass="AFStretchWidth"

All changes at a glance:

scrollPolicy="page"  autoHeightRows="0" styleClass="AFStretchWidth"

Once you did this, the table renders as shown in the image below.

ADF table


Monday Dec 17, 2012

Accessing ADF Faces components that are read-only from JavaScript

Almost as a note to myself and to justify the time I spent on analyzing aproblem, a quick note on what to watch out for when working trying to access read-only ADF Faces components from JavaScript. 

Those who tried JavaScript in ADF Faces probably know that you need to ensure the ADF Faces component  is represented by a JavaScript object on the client. You do this either implicitly by adding an af:clientListener component (in case you want to listen for a component event) or explicitly by setting the ADF Faces component clientComponent property to true.

For the use case I looked at in JDeveloper 11g R1 (11.1.1.7) I needed to make an output text component clickable to call a JavaScript function in response. Though I added the af:clientListener tag to the component I recognized that it also needed the clientComponent property set to true.

Though I remember this as not being required in 11.1.1.6, I like the new behavior as it helps preventing read-only components from firing client side events unless you tell it to do so by setting the clientComponent property to true.

Note: As the time of writing, JDeveloper 11.1.1.7 is not publicly available and I put the note in this blog as a reminder in case you ever hit a similar challenge so you know what to do.


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