XForms

A recent announcement that documentation for the Prototype Ajax library was now available was followed almost immediately by a rather neat looking desktop gadget and a Firefox sidebar. Not to be outdone, I decided to put together a toolbar for Internet Explorer, and managed to do the whole thing with one XForms form control and an action handler--and of course, no script.

A key component of an XForms processor is the dependency-engine. The idea is pretty straightforward, and will be familiar to anyone who has used a spreadsheet; if some item has its value set by a calculated expression that contains references to other items, then when any of those items change, the first item must be recalculated. It's not necessary to understand the dependency-engine when programming XForms, but having some familiarity with how it works may help when structuring forms.

Hello,

<xf:action ev:observer="put-file" ev:event="xforms-submit-error">
<xf:message level="modal">Submit error</xf:message>
</xf:action>

This message appears when loading form at top left without dispatching action !!!
Regards

Hi,
It seems they're a synchronisation problem when i execute Xform code which has injected dynamically with an AJAX Method (using AJAX.NET and ASPX page).
Here, the dynamic code with as inserted in my Xform Code after a the user action.
<xf:trigger>
<xf:label>Rallye Orpi du Maroc 2005</xf:label> <xf:action ev:event="DOMActivate">
<xf:setvalue
ref="instance('inst-browsing')/id_session_sheet"
value="2" />
<xf:setvalue
ref="instance('inst-session-id')/study_id"
value="2" /> <xf:message level="modal">First Message</xf:message>
<xf:dispatch name="set-study" target="document"/>
</xf:action>
</xf:trigger>

The Xform Action 'set-study' is including in my Xform Code.
Here a code sample:
...
<xf:action ev:event="set-study">

I use a complex XForm formular to store data to a Server.
This complex formular (coding in Xform and Ajax) loading several Xform instance (with Submission) which are synchronised with an Observer attribut (on Action Xform componement).

But sometimes (and not at regular time) IE Crash. Two kind of error occurs.
this errors Occurs after serveral loading of Xform instance (something a the first time).
The first error is a javascript error:
Error opening registry key
Error: "HKEY_LOCAL_MACHINE\SYSTEM\cuurentControlSet\Services\Eventlog\Application\formsPlayer"
Code:0

The Second Error "Freeze" the IE Browser.
When i analyse the Error with "Microsoft WinDbg 6", I Obtain this Error message:


(880.87c): Unknown exception - code e0000001 (first chance)
(880.87c): Unknown exception - code e0000001 (first chance)