Hello Jim,
Jim Hunter wrote:
>
> Yes, I think linking the controllers would be the way I would want to
> implement it because that is basically what our Win client does and I
> would
> need to replicate it as much as possible to reduce the amount of logic I
> would need to provide. It looks like I need to do some homework and learn
> this new stuff so I can start to prepare my app to use it. And viewing
> your
> virtual table withs it's speed tells me that I need to convert all my
> tables
> to virtual tables to help speed things along as well.
>
Looking at the code I realized that there is a selection binding mechanism
already through the qx.data.controller.MSelection Mixin which is included in
both controllers. However, the problem is that I do not have a property
(yet) to which I could bind the "selection" property exposed by the
controllers.
Instead, a simple way of doing it is:
treeWidget.addListener("changeSelection", function(event)
{
var selection = event.getData();
if ( selection.length )
{
var tableController = tableWidget.getController();
/*
* set the second parameter passed to the getRowData function
* to the node label
*/
tableController.getStore().getMarshaler().getQueryParams()[1]=
{ label : selection[0].label, id : selection[0].id };
tableController.getTarget().getTableModel().reloadData();
}
} );
And ther service method on the server will then get an object with node data
and provide response data based on this information. I have already added
this to the demo:
http://m53s12.vlinux.de/cboulanger/databinding/build/
You can trigger a reload of table data according to the selected tree node
by checking 'Bind tree selection to table'.
But maybe Martin has a better idea....
Cheers,
Christian
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