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From Frédéric THOMAS <webdoubl...@hotmail.com>
Subject RE: Flex Mobile DataGrid donation submission
Date Tue, 24 Sep 2013 15:18:11 GMT
Yes, I well remember the demo you did, very good fluidity, unfortunately I
haven't been able to watch it thru the youtube link, probably my bad
internet connection, I hope the others will have more luck.

For the license, it depends:

The ASF has a policy to not take software regardless of the license unless
the copyright holder grants it.
By signing the ICLA you have indicated that you have permission from the
copyright holder to make any contributions that you make.

I think steps are to file ICLAs [1], and a CCLA [2] if there is a corporate
entity (SYStar) involved.  Then fill out the software grant [3].

3- The donation process:

1. You fill out and sign all legal documents 
2. Some of us will review the code (it can be given via a zip associated to
a JIRA ticket or on github). 
3. We discuss where this code should land, the package names.
4. Once the software grant is recorded, someone can check the code into GIT.
5. Once it is in, it gets another review.  This means making sure there are
no binaries, that the headers are correct, that your copyrights (but not any
third-party copyrights) are moved to the NOTICES file (which must be done by
you or with your explicit permission).


[1] http://www.apache.org/licenses/icla.txt
[2] http://www.apache.org/licenses/cla-corporate.txt
[3] http://www.apache.org/licenses/software-grant.txt

-----Message d'origine-----
De : Maurice Amsellem [mailto:maurice.amsellem@systar.com] 
Envoyé : mardi 24 septembre 2013 16:04
À : dev@flex.apache.org
Objet : Flex Mobile DataGrid donation submission 

Hi Community,

I have developed for my company (SYSTAR) a custom Flex Mobile DataGrid
component (MDG for short) , for one of our projects (Business Activity
Monitoring framework, running on mobile devices ).

You can see a quick video of the MDG in action here:


(make sure to select 720p, for best viewing quality).

More details on the component at end of this email.

I would like, on behalf and with  the formal agreement of my company, to
donate this component's source code to Apache Flex.
We would be honored if the donation is accepted.
I will be happy to make *reasonable* changes to this component to meet
Apache Flex requirements and add missing features.

What is the "procedure" to submit a donation to Apache Flex ?

Mobile DataGrid component details:

The goal was to provide essential datagrid functions adapted to mobile
devices, with good performance on mobile.

-          Displays information in tabbed columns (like any datagrid)
-          Sorting columns by clicking on the header
-          Touch enabled scrolling.
-          Selection
-          Default renderers for stylable text and embedded bitmaps.
-          Custom renderers (preferably in AS) are possible.
-          Multi DPI aware ( both scaling and no scaling, media css,
multi-DPI artwork).
*Note on performance*

Good performance was key for this component, so it derives from List, and
not from DataGrid.
To ensure good performance, all the columns for each row are rendered using
one single "TabbedRowItemRenderer" which inherits from the base mobile list
This renderer will delegate the rendering of each column in the row to
 lightweight sub-renderers, and will manage the tabbed layout of
There are two predefined sub-renderers:
- The sub-renderer for Text inherits from StylableTextField
- The sub-renderer for bitmaps inherits from BitmapAsset.

Custom sub-renderers must implement a given interface and be written in AS3.
Performance tests:
Sample Mobile dataGrid displaying: 300 lines by 6 columns:
. 4 of small text,
. 1 with icon
. 1 with  multiline very long text in small font.
                             iPad 2    ipad 3 retina (gpu)  iPhone4s
scrolling (fps)       24            24                            18-24
sort on short col   instant   instant                       0.3s
sort on long text   <2s          < 2s                          < 2s

Maurice Amsellem
SYSTAR R&D - BusinessBridgeFX

PS: I have demoed the MDG to Frederic Thomas some time ago, while he was
sub-contracting for Systar, so maybe he remembers of that.

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