Alex’s Flex Closet

I've implemented the code you provided to show some total rows on my data grids. I ran into a couple of issues that were overcome by a couple small changes to the code as follows:

listContent.setActualSize(listContent.width, listContent.height - (footerHeight+15));
footer.setActualSize(listContent.width, footerHeight);
footer.move(listContent.x, listContent.y + listContent.heightExcludingOffsets + 15);

This component is fantastic, Very Good

But

if i use delete

paddingTop="0" paddingBottom="0" verticalAlign="middle"

and include

width="100%" height="100%"
in

The Footer of datagrid not display correct

Please test your Datagrid with 138 records

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if i use this

And update in file

FooterDataGrid.as

in line 19

protected var footerHeight:int = 22;

to

protected var footerHeight:int = 24;

Functional is correct !

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How should I proceed?

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Alex responds:

This code is just a prototype and is unsupported. If you have it working, great.

If i resize collum datagrid and in sequence i use slider to filter datagrid the error ocurred

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TypeError: Error #1009: Cannot access a property or method of a null object reference.
at DataGridFooter/updateDisplayList()[C:\inetpub\wwwroot\webserver\rarus_admin_flex_2\src\DataGridFooter.as:103]
at mx.core::UIComponent/validateDisplayList()[E:\dev\3.0.x\frameworks\projects\framework\src\mx\core\UIComponent.as:6214]
at mx.managers::LayoutManager/validateDisplayList()[E:\dev\3.0.x\frameworks\projects\framework\src\mx\managers\LayoutManager.as:602]
at mx.managers::LayoutManager/doPhasedInstantiation()[E:\dev\3.0.x\frameworks\projects\framework\src\mx\managers\LayoutManager.as:675]
at Function/http://adobe.com/AS3/2006/builtin::apply()
at mx.core::UIComponent/callLaterDispatcher2()[E:\dev\3.0.x\frameworks\projects\framework\src\mx\core\UIComponent.as:8460]
at mx.core::UIComponent/callLaterDispatcher()[E:\dev\3.0.x\frameworks\projects\framework\src\mx\core\UIComponent.as:8403]

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Please Help me, how to resolve this ?

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Alex responds:

in DataGridFooter.as in updateDisplayList, check to see if col is null and break out of the while loop

if i use itemRenderer error ocurred

TypeError: Error #1009: Cannot access a property or method of a null object reference.
at DataGridFooter/updateDisplayList

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Alex responds:

Your custon renderer must implement IDropInListItemRenderer

thanks for that just was asking can’t we using any thing and replacing it on this code
footer.setActualSize(listContent.width, footerHeight);
?

thanks

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Alex responds:

Not sure I understand the question. I guess you can make the footer some other size if you want to.

Hi Alex,
You talked about a version for AdvancedDataGrid developed by an other team. Do you have a link for showing that ? thanks

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Alex responds:

ADG has SummaryRows. It is developed by another team. I don't know if they've done footer support or not. Try Sameer's blog: http://techrays.wordpress.com/

useful post.thanks for ur sharing!

how to enhance debugging in flex :(

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Alex responds:

Debugging works fine for me. If you want specific features that other debuggers have, please file bugs/enhancement requests at bugs.adobe.com/jira

this blog is the AWESOME!

Hi, I added some functionality to these footers - horizontal scrolling, column resizing, and locked columns. I also implemented for the Advanced Data Grid. Post here. Thanks for the great post and great starting point.