Orbeon Forms community mailing list - How-to: Edit hierarchical structure with tree-view navigation

How-to: Edit hierarchical structure with tree-view navigation

Posted by Gerrit Boers on
URL: https://discuss.orbeon.com/How-to-Edit-hierarchical-structure-with-tree-view-navigation-tp3677789.html

Hi,

I have another how-to, it's a universal tree-view based master-detail viewer/editor. Before I start writing I would like to check the basic assumption underlying this form:

For any element in an xml document the count(preceding::*)+count(ancestor::*) uniquely identifies that element.

The tree-view is bound to a navigation instance:

<xforms:select1 ref="instance('navigation')" appearance="xxforms:tree">

The tree-view has the following itemset (all elements in the document):

<xforms:itemset nodeset="instance('xml-instance')//*">

Label and value are:

<xforms:label ref="name()"/>
<xforms:value ref="count(preceding::*)+count(ancestor::*)"/>

The detail view works like this:

<xforms:group ref="instance('xml-instance')//*[count(preceding::*)+count(ancestor::*)=instance('navigation')]">

Here's a screen capture with the form showing itself:

If my assumption is correct, this form can navigate and show/edit any xml document.

Regards,

Gerrit

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