XForms, Select and Group

Motivation

You want to conditionally display a group of elements based on the value selected from a list. This will work similar to a "switch/case" but you can have each view depend on complex XPath expressions that will evaluated to either true or false.

Screen Image

In the screen image above, the second item is selected. When a different item is selected, the view under the select list changes.

Sample Program

xmlns="http://www.w3.org/1999/xhtml"
xmlns:xf="http://www.w3.org/2002/xforms">;

Dynamically bind to a group

type="text/css">
@namespace xf url("http://www.w3.org/2002/xforms");
xf|group {
border: solid black 2px;
background-color: silver;
height: 100px;
}
xf|group xf|label {
position: relative;
font-family: Helvetica, sans-serif;
font-weight: bold;
background-color: white;
padding: 2px;
top: -10px;
left: 10px;
}
xf|group p {
position: relative;
top: -30px;
padding: 5px;
}

xmlns="">
one
one
two
three

nodeset="view-1" relevant="../current-view = 'one'" />
nodeset="view-2" relevant="../current-view = 'two'" />
nodeset="view-3" relevant="../current-view = 'three'" />

ref="current-view">
Select View:

One
one

Two
two

Three
three

ref="view-1">
Current view:

ref="view-2">
Current view:

ref="view-3">
Current view:

ref="view-1">
View One
One One One One One One One One One One One One One One One One One One

ref="view-2">
View Two
Two Two Two Two Two Two Two Two Two Two Two Two Two Two Two Two Two

ref="view-3">
View Three
Three Three Three Three Three Three Three Three Three Three Three Three Three Three Three Three Three

Discussion

This program is very similar to the example that uses a button to toggle a switch/case but the value is calculated dynamically by any XPath expression. The prior example that uses switch/case/toggle uses an XML Event to make a specific case visible.

Where this page came from

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