Re: [Xsltforms-support] obtaining XML from the user - possible? impossible?

[Andre C. <ac...@01...>]

Hi C.M.,

I am not sure that this can help, but, thanks to Alain, for reading,since you get the file dialog anyway, you would not specify the file on submission, so I use:

<xf:submission  id="load"method="get"serialization="none"replace="instance"action="file://  <view-source:file:///>">
	<xf:message  level="modeless"ev:event="xforms-submit-error">Submit error.</xf:message>
</xf:submission>


And the button is

<xf:submit  submission="load">
	<xf:label>Load</xf:label>
</xf:submit>

ac



> On Jul 7, 2012, at 1:19 PM, Alain Couthures wrote:
>>>
>>> Is there any convenient way to get an XML document that
>>> initially resides on the user's hard disk into an XForms
>>> instance, so the form can look at it and customize itself
>>> accordingly?  Or is that impossible?
>> Yes, you can use a submission at "file://" for reading and writing local
>> files. For security reasons, you will always get a File dialog
> This sounds excellent, but I'm having a little trouble understanding
> how it works in detail.  Are there any examples readily available?
> (Is this in rev. 549?)
>
> Having written that, I paused and told myself I should try to work
> it out for myself.  When I write two submissions of the form
>
>        <xforms:submission id="read"
> 			 method="get"
> 			 resource="file:///Users/cmsmcq/2012/misc/test.xml"
> 			 replace="instance"
> 			 instance="file"/>
> 			 >
>
> and
>
>        <xforms:submission id="save"
> 			 method="put"
> 			 resource="file:///Users/cmsmcq/2012/misc/puttest.xml"/>
>
> and provide Read and Save buttons of the form
>
>          <xforms:submit submission="read">
>            <xforms:label>Read</xforms:label>
>          </xforms:submit>
>          <xforms:submit submission="save">
>            <xforms:label>Save</xforms:label>
>          </xforms:submit>
>
> then should I get a File dialog for reading or saving, when I click
> those buttons?  I don't; the Loading ... message flashes very
> quickly, and the trace log gets two lines saying
>
> 0 -> Dispatching event xforms-submit on <SPAN class="xforms-submission" id="read"/>
> 1 -> Dispatching event xforms-submit-error on <SPAN class="xforms-submission" id="read"/>
>
> The document text.xml is not loaded into the 'file' instance.
>
> So I'm clearly doing something wrong here; I'll continue to play
> with this, but if any reader of this list can see where I'm going wrong,
> I'll be grateful for a hint.
>
>
>> (I could
>> allow a direct access to local files when no distant HTTP server is
>> used, what do you think?).
> "How can I use XForms on a local system without having to set
> up an HTTP server or install eXist or something?" is definitely
> a question I get often.  So yes, if you have found a way to make
> it work, I think it could be useful for many people who are first
> starting with XForms.
>
>>> ...
>>> If xf:upload were able to populate an instance (or an element
>>> in an instance) with an uploaded document, that would (I
>>> think) do what I think I need.  But if I read the 1.1 spec correctly,
>>> xf:upload data cannot be parsed XML data, only base64Binary
>>> and so on.
>> Yes, xf:upload is just for content.
> One workaround I have found seems to work for loading user-supplied
> XML documents into the instance.  I record it here in case
> anyone else finds it handy and hasn't already thought of it:
>
> I upload the base64 data to a script on the server which performs
> a base64 decoding and sends the file back to the client as
> text/xml.  The submission specifies replace="instance", so the
> XML document specified by the user is loaded into a specified
> XForms instance, where the form can work with it.
>
> A simple example is at
>
>    http://blackmesatech.com/2012/06/testcase/upload-into-instance.xhtml
>
> (The example works in Firefox, Chrome, and Opera.  For reasons I
> have not yet uncovered, xf:upload does not seem to work for me
> in Safari 5.1.7 at all.  The trace shows events xforms-submit,
> xforms-submit-serialize, and xforms-submit-error, but I have not
> yet figured out what is going wrong.)
>
>