Re: [platform-swt-dev] Why is Widget.data an Object?

[Steve Northover <Steve_Northover@xxxxxxxxxx>]

It's an optimization.  Every field
we add to widget takes up space in every widget that an application creates.
 Applications create a ton of widgets if you consider that every menu
and tool item is a widget.  The KEYED_DATA flag tracks whether the
data field in Widget contains a single object (that the user set with Widget.setData(Object)
or key/value pairs (set with Widget.setData(String, Object).

Scott Kovatch <skovatch@xxxxxxx>
Sent by: platform-swt-dev-bounces@xxxxxxxxxxx

03/27/2008 02:17 PM

Please respond to
"Eclipse Platform SWT component developers list."        <platform-swt-dev@xxxxxxxxxxx>

To	"Eclipse Platform SWT component developers list." <platform-swt-dev@xxxxxxxxxxx>
cc
Subject	[platform-swt-dev] Why is Widget.data an Object?

Hello,

Why does Widget use an Object to store data and track
it with KEYED_DATA? Is there some kind of backwards compatibility going
on here?

Scott

------------------
Scott Kovatch
Cupertino, CA
skovatch@xxxxxxx


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