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https://issues.apache.org/jira/browse/FLEX-35224?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15804857#comment-15804857
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Peter Ent commented on FLEX-35224:
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The paging aspect just means you want to present multiple items at a time, not
a single item, but the process is the same. In FlexJS, there's no "demand"
except when the data provider signals it has changed. Your paging button would
cause the data provider to refresh itself in some way and then dispatch an
event. The component presenting the item renderers (i.e., "virtual" DataGroup)
would need to figure out what to do to present this new information. Probably
something like make a pass through the itemRenderers it already has (since you
aren't scrolling, it is effectively a refresh of the itemRenderers) and giving
them the new data. The itemRenderers would then have to respond by redrawing
themselves using the new data.
I think you need a new DataGridView that creates the controls you need and you
can either make a new DataGridLayout or just make your DataGridView do the
work. The "DataGrid" in FlexJS is the sum of its beads, nothing more. If you
have your own view, model, data group, item renderer factory, etc. then any
changes to the DataGrid beads in FlexJS will have no effect on your work. What
you probably do not need to do is change the logic of the Container and its
beads since you can just use those to hold your own grid pieces.
Yes, it is a completely new view, but that's how pay-as-you-go works. Often you
have to just replace something completely.
> DataGrid doesn't support paging on large data set
> -------------------------------------------------
>
> Key: FLEX-35224
> URL: https://issues.apache.org/jira/browse/FLEX-35224
> Project: Apache Flex
> Issue Type: Improvement
> Reporter: Pan Li
> Priority: Minor
> Attachments: FilesOfPagingDataGridUsingBeads.zip,
> PagingDataGridAsBeads.patch, TestPagingDataUsingBeads.zip, screenshot-1.png,
> src.zip
>
>
> expected:
> Gird should support paging if data collection is large
> !screenshot-1.png!
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