[Laszlo-dev] Parsing order of dataset attributes

[Philip Romanik]

The original example had more data points. But, the spirit of the example 
can be rewritten using <gridcolumn> as,

<canvas debug="true">
   <dataset name="weather">
     <forecast>
       <day label="TODAY" 
imageurl="http://www.srh.noaa.gov/ifps/text/images/hi_shwrs70.jpg"
desc="Rain Likely" temp="Hi  60&#176;F "/>
       <day label="Tonight " 
imageurl="http://www.srh.noaa.gov/ifps/text/images/nwind.jpg"
desc="Breezy " temp="Lo  34&#176;F "/>
     </forecast>
   </dataset>

   <grid bgcolor0="0xAA0000" bgcolor1="0x880000"
         datapath="weather:/" contentdatapath="forecast/day">
     <gridcolumn>Label<text datapath="@label"/></gridcolumn>
     <gridcolumn width="400">Url<text datapath="@imageurl"/></gridcolumn>
     <gridcolumn>Description<text datapath="@desc"/></gridcolumn>
     <gridcolumn>Temperature<text datapath="@temp"/></gridcolumn>
   </grid>

</canvas>


The original version looks like:

<canvas debug="true">
   <dataset name="weather">
     <forecast>
       <day label="TODAY" 
imageurl="http://www.srh.noaa.gov/ifps/text/images/hi_shwrs70.jpg"
desc="Rain Likely" temp="Hi  60&#176;F "/>
       <day label="Tonight " 
imageurl="http://www.srh.noaa.gov/ifps/text/images/nwind.jpg"
desc="Breezy " temp="Lo  34&#176;F "/>
     </forecast>
   </dataset>

   <grid bgcolor0="0xAA0000" bgcolor1="0x880000"
           datapath="weather:/" contentdatapath="forecast/day" />
</canvas>




>There are 2 issues here:
>
>1) Henry is right (again!):  XML attributes do not have an order, so
>the example is just broken.  To make the column order the same across
>platforms, you would have to bind the columns to nodes (which are
>ordered), not attributes; or, impose some ordering on the columns
>(e.g., does grid have an option to specify its columns, rather than
>intuiting them from the databinding?).  Diddling the runtimes to make
>the column orders match is not the correct solution.
>
>[DOC Guy: In fact, his would make a good documentation example,
>showing the inherent unorderedness of XML attributes and how to deal
>with that, assuming there is a way to specify grid column order.]
>
>2) I do see one more deferred event handling in the DHTML case than
>in the SWF case.  This may be indicative of another problem.
>
>I don't know about your theory of SWF node instantiation and the
>other bugs, but I do not believe it is relevant here.
>
>On 2007-01-26, at 22:08 EST, Max Carlson wrote:
>
> > So, it sounds like swf is instantiating backwards in legals, when
> > compared to trunk.
> >
> > I remember way back in the day we had to reverse the view init
> > order of children in SWF to get things to look right.  We no longer
> > do this, which could explain the behavior.
> >
> > This also sounds like it could be the issue underlying these bugs:
> > LPP-3331 - Flash: Components Menu example is missing openMenu right/
> > below/top LPP-3274 - Laszlo in 10 scripting->method example not
> > showing 5
> > yellow boxes on startup
> >
> > We need to make sure swf is consistent between trunk and legals,
> > and dhtml and swf are consistent in legals.
> >
> > -Max
> >
> > Philip Romanik wrote:
> >> Hi guys,
> >> I'm looking into a jira bug (http://jira.openlaszlo.org/jira/
> >> browse/LPP-3379) where the display order is reversed between swf
> >> and dhtml. Is there anything I can do about the ordering? The
> >> behavior of dhtml matches v3.3 (it displays data in the order it's
> >> listed). It is reversed in swf. Here's an app that demonstrates it.
> >> I think this issue came up a while back. Do either of you remember?
> >> Thanks!
> >> Phil
> >> <canvas debug="true">
> >>   <dataset name="weather">
> >>     <forecast>
> >>       <day label="TODAY" imageurl="http://www.srh.noaa.gov/ifps/
> >> text/images/hi_shwrs70.jpg"
> >> desc="Rain Likely" temp="Hi  60&#176;F "/>
> >>       <day label="Tonight " imageurl="http://www.srh.noaa.gov/ifps/
> >> text/images/nwind.jpg"
> >> desc="Breezy " temp="Lo  34&#176;F "/>
> >>     </forecast>
> >>   </dataset>
> >>   <grid bgcolor0="0xAA0000" bgcolor1="0x880000"
> >>           datapath="weather:/" contentdatapath="forecast/day" />
> >> </canvas>
> >
> > --
> > Regards,
> > Max Carlson
> > OpenLaszlo.org