I am rendering a table with p:dataTable (PrimeFaces) and what I want to do is color the background of cells depending on the value of their content. This is different from coloring a row or a column -- it is the individual cell.
First a CSS problem. If I do this:
<p:column headerText="xyzzy">
<div style="background-color: green">
<h:outputText value="#{rowVar.anumber}" >
<f:convertNumber groupingUsed="true" />
</h:outputText>
</div>
</p:column>
the background color just of the content gets set, not the whole cell. In other words the padding is still the default.
Second, I want to make the style string a variable expression. I can add a function to the backing bean, but how do I access the table content in the method? Will this work?
<div style="#{bean.computeCSS(rowVar.number}">
EDIT:
I figured out a way to do the conditional part, but I still need help with the CSS part. My solution looks like:
<p:column headerText="xyzzy">
<div class="#{rowVar.anumber gt 0 ? 'colored' : ''}">
<h:outputText value="#{rowVar.anumber}">
<f:convertNumber groupingUsed="true" />
</h:outputText>
</div>
</p:column>
Although I dislike getting to fancy in EL, this has the advantage of not needed a backing bean method.
However I still only get the background color set, not the whole cell.
You can add a css class to the row and to the column too, that identifies a cell.
Use the dataTable's rowStyleClass
attribute (example).
If you want to color multiple rows:
<p:dataTable value="#{bean.rows}" var="rowVar"
rowStyleClass="#{rowVar.firstCol gt 0 ? 'firstColColored' : ''}
#{rowVar.secondCol gt 0 ? 'secondColColored' : ''}">
<p:column styleClass="firstCol">...
<p:column styleClass="secondCol">
css:
.firstColColored .firstCol {
background: pink;
}
how about adding padding to your class , with px or percents...
something like this
.colored{
background-color:yellow;
padding-top:25px;
padding-bottom:25px;
padding-right:50px;
padding-left:50px;
}
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