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From "venkata guddanti" <>
Subject Re: TreeTable focusRowKey
Date Tue, 31 Oct 2006 01:39:09 GMT
On 10/30/06, Kamran Kashanian <> wrote:
> In UIXTreeTable the focusRowKey attribute specifies the rowKey of the
> currently focused row. In the renderer, the row with the focusRowKey is
> rendered as the root node of the TreeTable and a focus path is rendered
> above the TreeTable.
> When no focusRowKey attribute is specified on the component, UIXTreeTable
> defaults the focusRowKey to the first node in the treeModel. So the
> focusRowKey can never be null.
> This defaulting of the focusRowKey is OK for UIXTreeTable because it only
> supports a single root node.
> The issue I have with this is that I want to support multi-rooted
> TreeTables. So I want to do two things:
> 1) When no focusRowKey attribute is specified on the component, I will
> render all of the root nodes in the TreeTable (multi-rooted TreeTable).
> 2) When a focusRowKey attribute is specified, I will render the row with
> the
> focusRowKey as the single root node of the TreeTable.
> Unfortunately, becuase UIXTreeTable always sets a default focusRowKey,  I
> can't achieve #1 above. The defaulting of the focusRowKey is done in the
> _init() method of UIXTreeTable, which is a package scoped method. So I
> can't
> override this default behavior in my subclass of UIXTreeTable.
> There are a couple of solutions to this:
> 1) Move the defaulting logic to a protected method in the UIXTreeTable so
> that it can be overriden in subclasses
> 2) Move the defaulting logic out of the component and into the renderer.

+1 to moving it to the renderer since it is a renderer specific feature.


I hope all of this makes sense, and any input on this is very much
> appreciated.
> -- Kamran

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