[Laszlo-dev] Parsing order of dataset attributes

[Max Carlson]

I agree this is likely to due to attribute order differences between swf 
and dhtml.  The thing that worries me is: why is legals swf in reverse 
order from trunk?  We need to make sure trunk and legals swf are as 
consistent as possible.  If I understood what the underlying cause of 
the difference was I'd feel better.

-Max

P T Withington wrote:
> Aha!  You have just given Dr. Doc his tutorial on XML attribute ordering 
> then.
> 
> I assume your revision works correctly (and the same) on both platforms.
> 
> On 2007-01-27, at 10:29 EST, Philip Romanik wrote:
> 
>> 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
>>
> 

-- 
Regards,
Max Carlson
OpenLaszlo.org