RE: Howto conditional formating of single cells like in Excel?

[CONNER, BRENDAN \(SBCSI\)]

Use <t:column>, which allows you to specify a style for that cell.
Then, your choice is to conditionally render different <t:column>
actions with different styles, or, a cleaner way would be to have the
style value come from a bean value using the Expression Language
(#{...}).

- Brendan

-----Original Message-----
From: Christian [mailto:[EMAIL PROTECTED] 
Sent: Wednesday, September 21, 2005 11:12 AM
To: users@myfaces.apache.org
Subject: <dataTable> Howto conditional formating of single cells like in
Excel?


Hello everyone,

I just tried to do conditional table highlighting in <h:dataTable> or
<f:dataTable> for a single cell content, without getting a general
approach of how to do it. You might help me. 

Idea:
I want to implement an eyecatcher. Just imagine MS Excel-table cells. In
Excel you can define formating rules for cells. Example: If the amout of
money is negative, it is to be displayed in red, else it is to be
displayed in black. In my app I want to do this with a date field, ie.
if the date displayed is lower than the date of today (Usecase:
"Something is overdue"), it is to be displayed in red instead of black
as usual.

Situation:
My <dataTable> is bound to a managed bean containing a list of
dataBeans, works fine.

#

Things I tried to do:

I tried to do component binding to an HtmlOutputText-Component like

| <x:dataTable var="list"
| [...]
|     <h:column>
|         <h:outputText binding="#{list.dateOutputCompontent}"
value="#{list.dateOfReturn}"/>
|     </h:column>
| [...]


I also tried to do something like:
| FacesContext context = FacesContext.getCurrentInstance();
| HtmlOutputText dateOutput = null;
| dateOutput =
| (HtmlOutputText)context.getViewRoot().findComponent("dueD");
| dateOutput.setStyle("color:red");  
in combination with
| <h:column>
|    <h:outputText id="dueD" value="#{list.dateOfReturn}"/>
| </h:column>
I put the java-code inside the getter of the date value, which did not
work. The table-display-result broke at the rendering of the first
date-format.

Question:
Does anyone have an idea of what to do an where to do.

Thanks in advance.
Regards
Christian