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From tieds <sc...@lbisoftware.com>
Subject Re: Dojo custom build and Struts ComboBox widget
Date Mon, 03 Nov 2008 19:30:49 GMT

The problem with using 0.4.0 is that you lose out on the dojo improvements
made in 0.4.1, specifically some handling of potential memory leaks in IE. 
Does anyone know how to get this working with dojo v0.4.1 or later?


Jeromy Evans - Blue Sky Minds wrote:
> 
> Urgh... I was trying to create a build from the src in 2.0.9 as well 
> without any progress.  Glad you solved it. 
> 
> Yes, please go ahead and update the wiki.  I was the original author of 
> that page and that's why it's a wiki :-)
> 
> Max Pimm wrote:
>> Solved.
>>
>> I have downloaded and created the custom build from the dojo 0.4.0 
>> release instead of dojo 0.4.2 and now all works well. From comparing 
>> files i am pretty sure that 0.4.0 was the release used in the 
>> struts2.0.11, 2.0.10, 2.0.9 and 2.0.8 releases but it would be good if 
>> someone could confirm that.
>>
>> We should also update the wiki 
>> (http://cwiki.apache.org/S2WIKI/creating-a-custom-dojo-profile-for-struts-209.html)

>> to change all references to 0.4.2 to 0.4.0. I have access but perhaps 
>> this should be approved by the developers first?
>>
>> max
>>
>> Max Pimm wrote:
>>> I am using firebug and Venkman to debug. No requests are sent to get 
>>> data for the list. After debugging the problem seems to be that the 
>>> Struts comboBoxDataProvider's init method never gets called. This 
>>> means the widget never loads data from the server. Every time the 
>>> user edits the input field events are fired and the widget searches 
>>> for data matching the input string. However since no data is loaded 
>>> from the server no match is found and no autocomplete list is shown.
>>>
>>> So the problem is with the data provider. Looking more carefully at 
>>> the dojo.widget.ComboBox component the problem would seem to be that 
>>> the 0.4.2 release of dojo is NOT the same as the one bundled with 
>>> struts. There are significant differences in the dojo.ComboBox and 
>>> data provider in the two versions. I've tried copying the dojo code 
>>> included in the struts bundle to the dojo 0.4.2 release but the build 
>>> fails.
>>>
>>> Which is the dojo version that was used in the build of 
>>> struts2-core-0.011.jar?
>>>
>>>
>>>
>>> Jeromy Evans wrote:
>>>> Max Pimm wrote:
>>>>> I am trying to make a custom build of dojo for my application in 
>>>>> order to speed it up a bit.
>>>>>
>>>>> (See threads "[s2] Struts head tag KILLS (> 10s) page load time" 
>>>>> and "How to improve dojo performance in Struts 2.0.9")
>>>>>
>>>>> I have followed the instructions for doing this are carefully as 
>>>>> possible from 
>>>>> http://cwiki.apache.org/S2WIKI/creating-a-custom-dojo-profile-for-struts-209.html.

>>>>>
>>>>>
>>>>> My custom build appears to have worked. dojo.js is generated with 
>>>>> the struts widgets "Internalized", each page i load makes minimal 
>>>>> requests for other dojo scripts and the basic bind functionality of 
>>>>> dojo works.
>>>>>
>>>>> However the Struts:Combobox component used in my autocompleters 
>>>>> does not work. Some code is executed when i edit the field but it 
>>>>> does not result in a petition to the server y hence no autocomplete 
>>>>> list is shown. Dojo is configured in debug mode but gives no 
>>>>> errors. The struts folder containing the widgets is present in 
>>>>> <contextroot>/struts/dojo. Dojo correctly finds the dropdown image

>>>>> for the input and uses the styles in ComboBox.css the only problem 
>>>>> is that it does not issue petitions to the server when the onKeyUp 
>>>>> event fires.
>>>>>
>>>>> I am using the 2.011 build of struts, is the process for building a 
>>>>> custom dojo build the same as in 2.09? I can't find any changes in 
>>>>> the ComboBox between these versions but is there anything else that 
>>>>> might be causing these problems.
>>>>>
>>>>> Does anyone have any advice for how to start debugging this?
>>>>>
>>>>> Thanks,
>>>>>
>>>>> max
>>>>>
>>>> I'm not sure what is wrong, but the approach I'd take to debug it is:
>>>>  - Use firebug to see if the page is getting a 404 trying to load 
>>>> any of the resources required by dojo.  This is the most likely 
>>>> cause if it was working before you created the custom build
>>>>  - Replace your dojo.js file with the dojo.js-uncompressed.js file 
>>>> also created by the build process.  This one contains comments and 
>>>> debug info.  See if any errors are now displayed
>>>>  - Find the combobox code in dojo.js-uncompressed.js and use 
>>>> breakpoints in firebug to find out exactly what's happening.
>>>>
>>>> Let me know how you go.
>>>> cheers,
>>>> Jeormy Evans
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
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>>>>
>>>>
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>>>
>>
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>>
>>
> 
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