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From Rogers Reilly <rogers_rei...@s-rod.com>
Subject Re: Using Dojo with Trinidad
Date Mon, 09 Oct 2006 23:23:36 GMT
Awesome, thanks Adam.  This helps a lot.

Adam Winer wrote:

> TreeModel doesn't have to do that.  The default implementation
> of isContainerEmpty() is:
>
>  public boolean isContainerEmpty()
>  {
>    if (!isContainer())
>      return true;
>
>    enterContainer();
>    try
>    {
>      int kids = getRowCount();
>      if (kids < 0)
>      {
>        setRowIndex(0);
>        return !isRowAvailable();
>      }
>      return (kids == 0);
>    }
>    finally
>    {
>      exitContainer();
>    }
>  }
>
> ... which, like you say, gets the children to figure out whether
> there's > 0.  If your subclass of TreeModel overrides this to
> provide a more efficient implementation, then it won't get
> the children until expanded.
>
> BTW, we definitely need some Javadoc on this, because
> this is not at all obvious!
>
> -- Adam
>
>
>
> On 10/9/06, Rogers Reilly <rogers_reilly@s-rod.com> wrote:
>
>>
>> TreeTable definitely does lazy loading.
>>
>> On the subject, though, I've noticed that (in the build I've been using,
>> which is admittedly a bit stale- not the same webapp as my 1.2 project
>> :-) ) TreeTable does insist on fetching the children of visible
>> nodes--presumably to see whether or not it needs to render an
>> "expandable" node.  Problem is, (a) it seems to render the expandable
>> icon either way, and (b) there are times when I'd rather it not check
>> for this because those are expensive child nodes to build.
>>
>> To get around this, I've actually added dummy nodes to some of my
>> TableTrees:
>>
>> Node1
>> Node2
>> ...
>> NodeX
>>    |-Click to see drilldowns
>>          |-Logical SubNode1
>>          |-Logical SubNode2
>>
>> If I don't add the superfluous "Click to see drilldowns" subnode, my
>> TreeTable tries to load all of the SubNodes right away- again,
>> presumably to figure out if NodeX should be expandable.  I'd love to see
>> some kind of "prefetchChildren" attribute so I could disable this
>> behavior.
>>
>> Rogers
>>
>> Adam Winer wrote:
>>
>> > What do you mean by "does not do lazy loading"?  TreeTable
>> > definitely doesn't load all the data of the tree up front.
>> >
>> > -- Adam
>> >
>> >
>> > On 10/7/06, Naresh Bhatia <NBhatia@sapient.com> wrote:
>> >
>> >> BTW, forgot to answer your other question. Yes, I do plan to create a
>> >> custom component in Dojo. (Specifically a TreeTable component - I 
>> know
>> >> there is one in Trinidad, but as far as I can tell it does not do 
>> lazy
>> >> loading and couple other requirements I have.)
>> >>
>> >> Naresh
>> >>
>> >> -----Original Message-----
>> >> From: Naresh Bhatia [mailto:NBhatia@sapient.com]
>> >> Sent: Saturday, October 07, 2006 6:28 PM
>> >> To: adffaces-user@incubator.apache.org
>> >> Subject: RE: Using Dojo with Trinidad
>> >>
>> >> jMaki is on my TODO list to review. A cursory look suggests that it
>> will
>> >> work with JSF (https://ajax.dev.java.net/usingFaces.html), but 
>> there is
>> >> no mention of ADF Faces or Trinidad. My question is specific to
>> >> Trinidad, because Trinidad seems to take over some of the events like
>> >> "onLoad" etc. thus potentially encroaching the Dojo turf. I am 
>> already
>> >> having several problems integrating Dojo with with Trinidad raw (see
>> >> some of my other posts today) - without using any frameworks, so I 
>> want
>> >> to be extra careful bringing other variables in. One thought that did
>> >> cross my mind is to NOT use Trinidad on pages where I want to use 
>> Dojo.
>> >> Anyway I am waiting on the experts in this group to enlighten me :-).
>> >>
>> >> Naresh
>> >>
>> >> -----Original Message-----
>> >> From: Clemens Schneider [mailto:clemens.schneider@gmail.com]
>> >> Sent: Saturday, October 07, 2006 5:02 PM
>> >> To: adffaces-user@incubator.apache.org
>> >> Subject: Re: Using Dojo with Trinidad
>> >>
>> >> Did you have a look at JMaki? Or are you searching for infos for 
>> custom
>> >> component development?
>> >>
>> >> -clem
>> >>
>> >> Naresh Bhatia wrote:
>> >> > Does anyone have any pointers or samples for using Dojo with
>> Trinidad?
>> >> >
>> >> >
>> >> >
>> >> > Thanks
>> >> >
>> >> > Naresh
>> >> >
>> >> >
>> >> >
>> >>
>> >
>> >
>>
>>
>>
>



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