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Re: Recursive tree display in a select1 or repeat

From: T.V Raman <raman@google.com>
Date: Mon, 2 Jun 2008 11:19:45 -0700
Message-ID: <18500.14785.981714.823772@retriever.corp.google.com>
To: andy@hazlorealidad.com
Cc: raman@users.sourceforge.net, www-forms@w3.org

The tree control that Mikko built took care of not having to have
a given number of levels of nesting

Andy Bailey writes:
 > 
 > Thanks for the suggestion, I had thought of that but I would have to
 > assume the maximum number of levels and write that number of nested
 > repeats.
 > 
 > However, the data structure could have any number of levels. Also the
 > properties of the control for a leaf node are different from a branch
 > node, so it would make things kind complicated.
 > 
 > Is there no way to make the controls recursively. With xslt it would be
 > very easy, but I dont really want to mix client side xslt and xforms.
 > 
 > A select1 appearance="tree" would be very nice in the next version of
 > xforms!
 > 
 > Thanks
 > 
 > Andy Bailey
 > 
 > On Thu, 2008-05-29 at 06:33 -0700, T. V. Raman wrote:
 > > try nested repeats?
 > > 
 > > Mikko had prototyped his tree control in x-smiles by using that
 > > as a basis.
 > > 
 > > >>>>> "Andy" == Andy Bailey writes:
 > >     Andy> I sent a message to mozilla.dev.tech.xforms and someone
 > >     Andy> suggested that I post the message to this group- so
 > >     Andy> here goes:
 > >     Andy> 
 > >     Andy> I have a recursive data structure (see below), with any
 > >     Andy> number of levels and would like to display it in a
 > >     Andy> select1 the closest I can get so far is a flat select1
 > >     Andy> using //path however it would be nice to group the
 > >     Andy> options together.
 > >     Andy> 
 > >     Andy> 
 > >     Andy> Ideally I would like a tree structure where I could
 > >     Andy> expand/hide the child elements as well as select1
 > >     Andy> something like appearance="tree"
 > >     Andy> 
 > >     Andy> 
 > >     Andy> I see that you can write custom controls in firefox
 > >     Andy> with xul or xbl but have no experience with either and
 > >     Andy> also would like a standard xform solution. I thought of
 > >     Andy> using repeats as well but cant see any way to have any
 > >     Andy> number of levels.
 > >     Andy> 
 > >     Andy> 
 > >     Andy> If I used repeats how could I get the expand/hide
 > >     Andy> functionality?
 > >     Andy> 
 > >     Andy> 
 > >     Andy> In the repeat example I had to use index('part1')" in
 > >     Andy> <xf:setvalue bind="selectedpart"
 > >     Andy> value="index('part1')"/> "name" didnt work and if I put
 > >     Andy> value="name(.)" the selected part became the string
 > >     Andy> "selectedpart" can anyone explain why that is? I
 > >     Andy> assumed it would be the node of the repeat.
 > >     Andy> 
 > >     Andy> 
 > >     Andy> Also if I clicked with the mouse on the select1 each
 > >     Andy> time the model got updated but if I used the arrow keys
 > >     Andy> up/down then the model didnt get update even though
 > >     Andy> incremental="true", is this a bug in firefox or
 > >     Andy> expected behavior in xforms?
 > >     Andy> 
 > >     Andy> 
 > >     Andy> 
 > >     Andy> Thanks in advance
 > >     Andy> 
 > >     Andy> 
 > >     Andy> Andy Bailey http://www.hazlorealidad.com
 > >     Andy> 
 > >     Andy> 
 > >     Andy> <assembly> <name>Open source CNC Machine</name> <parts>
 > >     Andy> <part id="structure"> <name>Estructura</name> <parts>
 > >     Andy> <part id="base"> <name>Base</name> <parts> <part
 > >     Andy> id="baseStructure"> <name>Estructura</name> </part>
 > >     Andy> <part id="feet"> <name>Pies</name> </part> <part
 > >     Andy> id="antiVibration"> <name>Aisladores (anti
 > >     Andy> vibración)</name> </part> </parts> </part> ....
 > >     Andy> 
 > >     Andy>  <xf:select1 bind="selectedpart" appearance="full"
 > >     Andy> incremental="true"> <xf:label>Part Tree: </xf:label>
 > >     Andy> <xf:itemset nodeset="instance('assembly')//part">
 > >     Andy> <xf:label ref="name"/> <xf:value ref="@id"/>
 > >     Andy> </xf:itemset> </xf:select1>
 > >     Andy> 
 > >     Andy> 
 > >     Andy> <!-- <xf:repeat id="part1"
 > >     Andy> nodeset="instance('assembly')/parts/part"> <div
 > >     Andy> style="margin-left:0em;"> <xf:trigger ref=".">
 > >     Andy> <xf:label> <xf:output ref="name"/> </xf:label>
 > >     Andy> <xf:action ev:event="DOMActivate"> <xf:setvalue
 > >     Andy> bind="selectedpart" value="index('part1')"/>
 > >     Andy> <xf:message level="modal">Part Selected <xf:output
 > >     Andy> ref="name"/></ xf:message> </xf:action>
 > >     Andy> 
 > >     Andy> 
 > >     Andy> </xf:trigger> <xf:repeat id="part2"
 > >     Andy> nodeset="parts/part"> <div style="margin-left:2em;">
 > >     Andy> <xf:trigger ref="."> <xf:label> <xf:output ref="name"/>
 > >     Andy> </xf:label> </xf:trigger> <xf:repeat
 > >     Andy> nodeset="parts/part"> <div style="margin-left:2em;">
 > >     Andy> <xf:trigger ref="."> <xf:label> <xf:output ref="name"/>
 > >     Andy> </xf:label> </xf:trigger> </div> </xf:repeat> </div>
 > >     Andy> </xf:repeat> </div> </xf:repeat>
 > >     -->
 > >     Andy>
 > > 
 > > --
 > > Best Regards,
 > > --raman
 > > 
 > > 
 > > Email:  raman@users.sf.net
 > > WWW:    http://emacspeak.sf.net/raman/
 > > AIM:    emacspeak       GTalk: tv.raman.tv@gmail.com
 > > PGP:    http://emacspeak.sf.net/raman/raman-almaden.asc
 > > Google: tv+raman
 > > IRC:    irc://irc.freenode.net/#emacs
 > 
 > 

-- 
Best Regards,
--raman

Title:  Research Scientist      
Email:  raman@google.com
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Received on Monday, 2 June 2008 18:20:47 GMT

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