Re: Action: Steven to propose wording for the 3-way split for output @mediatype

One thing to be decided that we don't yet define, is what event to send in 
the case that dereferencing a URI fails.

 For <instance src=""/> we use xforms-submit-error (which is non-fatal).

 For <instance resource=""/> we use xforms-link-error (which is fatal).

I favour a non-fatal error in this case, I think.

Steven


On Friday 29 August 2025 13:17:56 (+02:00), Steven Pemberton wrote:

 > Here is a first attempt.
 > 
 > Steven
 > 
 > Data is obtained by evaluating the value attribute if present, or 
otherwise from the Single Item Binding if present, and otherwise from the 
inline data.
 > 
 > A mediatype is obtained from the mediatype attribute if present, or 
otherwise from the mediatype child element if any.
 > 
 > * If the type of the data is xs:anyURI, xf:absoluteIRI, or xf:httpIRI, 
it is dereferenced, and the result is the data to be rendered; if no 
mediatype has been specified, the Content-type of the returned data is 
used.
 > 
 > * If the type of the data is xs:base64Binary or xs:hexBinary, it is 
decoded accordingly, to give the data to be rendered.
 > 
 > * Otherwise the data itself is the data to be rendered.
 > 
 > If the data to be rendered is non-empty, it is rendered in a suitable 
way taking into account the datatype of the value, the mediatype if any, 
the appearance attribute, and localization and internationalization issues 
such as representation of numbers and dates.
 > 
 > Implementations should accept mediatypes of at least image/* (including 
SVG), text/html, application/xhtml+xml, and application/mathml+xml as 
possible values of mediatype.
 > 
 > The data is rendered on XForms initialization, and re-rendered whenever 
there is a change in any node to which the binding or expression refers, or 
if the mediatype changes.
 > 
 > Note. Types are obtained from instance data, or from a property on the 
control. Therefore
 > 
 >  <instance>
 >     <data xmlns="">
 >        <link>http://example.com/value</link>
 >     </data>
 >  </instance>
 >  <bind ref="link" type="anyURI"/>
 >  ...
 >  <output ref="link"/>
 > 
 > will cause the URI to be dereferenced, and the resulting data to be 
rendered. However, 
 >  <output value="link"/>
 > 
 > will cause the string <code>http://example.com/value</code> to be 
output, since the type of a <code>value</code> attribute is 
<code>string</code>.
 > 
 > In that case, you have to add a <code>type</code> attribute to the 
control:
 > 
 >  <output value="link" type="anyURI"/>
 > 
 > {Examples to include an SVG example. They already include an HTML 
example.}
 > 
 >

Received on Friday, 29 August 2025 11:46:29 UTC