Re: Re: Re: Re: RE: Re: Textarea to handle a nodeset

Posted by Erik Bruchez on
URL: https://discuss.orbeon.com/Textarea-to-handle-a-nodeset-tp2717564p2967832.html

Carl,

(This topic is not related to the original thread.)

In Orbeon Forms, updates go through the server. Updates like the ones
you mention work but there is typically some latency, unlike with a
100% client-side implementation.

-Erik

On Tue, Sep 28, 2010 at 8:00 PM, cray99 <[hidden email]> wrote:

> Hi, I'm thinking of migrating my xforms to orbeon, so I've been following
> this list to see what issues I might be facing, but quite frankly, this one
> confuses me unless I just don't get the picture--and it is an important
> issue for me.
>
> In mozilla, when you have a textarea bound to a node and you make changes to
> that textarea the node is instantaneously updated. For example, if you put
> an xf:output next to your xf:textarea, both bound to the same node, you can
> see the changes to the output as you type if you have the textarea
> incremental attribute  set to "true", and even if not, you can see an
> immediate update when you click anywhere outside the textarea and the
> instance gets updated (refreshed?).
>
> Is this not the case in Orbeon? This is important to me because I have an
> entire bulletin board application built on this very concept.
>
> Or if you are talking about a different use case, could you describe it more
> from the user's point of view?  Are you talking about updating the instance
> from somewhere else in the form besides the textarea? like an xforms-select
> or something and you want the textarea to reflect that update? Is this not
> automatic?
>
> This is really important to my application and my decision to migrate so any
> clarification would be appreciated.
>
> Carl Ray, Jr., Ed.D.
> Cheng Shiu University, Taiwan
>
>
>
> Brian Steuhl wrote:
>>
>> I have recently done this in textArea control and it took me the whole
>> weekend to figure out the complexities when dealing with styling as well and
>> escaping tags using nothing but xform extensions and xpath.  Pretty complex
>> but I can preload a textarea with a template and have controls change data
>> in the textarea as well as have users change data in the textarea keeping
>> things in synch.
>>
>> Brian Steuhl
>> website: http://BTMSoftwareSolutions.com
>> business email: [hidden email]
>> cell: 908-421-0742
>>
>> home office: 732-961-3187
>> RSS Feed To My Blog:
>>
>> Business Process Modeling - BTMSoftwareSolutions.com
>> <http://feeds.feedburner.com/%7Er/blogspot/Blxz/%7E6/4>
>>
>>
>>
>> ------------------------------------------------------------------------
>> *From:* Erik Bruchez <[hidden email]>
>> *To:* [hidden email]
>> *Sent:* Tue, September 28, 2010 5:45:03 PM
>> *Subject:* [ops-users] Re: RE: Re: Textarea to handle a nodeset
>>
>> Stephanie,
>>
>> Just trying to understand the use case here.
>>
>> What you are doing in this example is pointing to so-called complex
>> content, i.e. an element containing "stuff" other than just text.
>>
>> Right now, XForms disallows that: you can only point to elements
>> without nested content, or attributes.
>>
>> So the question is: what do you do with that content, both ways:
>>
>> * when reading from the instance to the control
>> * when writing to the instance from the control
>>
>> What's your algorithm for those operations?
>>
>> -Erik
>>
>> On Tue, Sep 28, 2010 at 2:31 PM, Stephanie Hall (TT)
>> <[hidden email]
>> <mailto:[hidden email]>> wrote:
>> > Hold data from an instance? I'm sorry, I don't know exactly what you're
>> > looking for.  Right now if you bind a nodeset to a textarea, it will display
>> > all of the contents of the nodeset, but I want, upon changes to the nodeset
>> > in the textarea, that the appropriate node be updated in the instance. That
>> > doesn't happen now - it just gets reset to the original instance's data.
>> >
>> > So if I have
>> >
>> > <instance id="myinstance">
>> >        <project>
>> >                <files>
>> >                        <file>
>> >                                <filename>name1</filename>
>> >                                <createdBy>steve</createdBy>
>> >                        </file>
>> >                        <file>
>> >                                <filename>name2</filename>
>> >                                <createdBy>bob</createdBy>
>> >                        </file>
>> >                </files>
>> >        </project>
>> > </instance>
>> >
>> > I would see (if I do ref="instance('myInstance')/files" in the
>> > xforms:textarea)
>> >
>> > Name1
>> > Steve
>> >
>> > Name2
>> > Bob
>> >
>> > In the textarea.  And then if I make changes in the textarea, like bob
>> > becomes Ted, I want it to update the instance to be:
>> >
>> >  <instance id="myinstance">
>> >        <project>
>> >                <files>
>> >                        <file>
>> >                                <filename>name1</filename>
>> >                                <createdBy>steve</createdBy>
>> >                        </file>
>> >                        <file>
>> >                                <filename>name2</filename>
>> >                                <createdBy>Ted</createdBy>
>> >                        </file>
>> >                </files>
>> >        </project>
>> > </instance>
>> >
>> > It has to be displayed in a textarea, also (or something that looks like
>> > one to the normal user at least) :)
>> >
>> > Thanks,
>> > Stephanie
>> >
>> >
>> >
>> > -----Original Message-----
>> > From: [hidden email] <mailto:[hidden email]>
>> > [mailto:[hidden email] <mailto:[hidden email]>] On Behalf Of Erik
>> > Bruchez
>> > Sent: Tuesday, September 28, 2010 4:22 PM
>> > To: [hidden email] <mailto:[hidden email]>
>> > Subject: [ops-users] Re: Textarea to handle a nodeset
>> >
>> > Stephanie,
>> >
>> > What would the nodeset do?
>> >
>> > -Erik
>> >
>> > On Tue, Sep 28, 2010 at 10:10 AM, Stephanie Hall (TT)
>> > <[hidden email]
>> > <mailto:[hidden email]>> wrote:
>> >> Hi all,
>> >>
>> >>
>> >>
>> >> Is there support anywhere for a textarea to handle a nodeset?  Or,
>> >> would it be difficult to extend the existing textarea component to
>> >> support this via XBL?
>> >>
>> >>
>> >>
>> >> Thanks,
>> >>
>> >> Stephanie
>> >>
>> >> --
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>
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