Mailinglist Archive: yast-devel (129 mails)

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Re: [yast-devel] Mod-ui: HVStretch widget dropped
  • From: Stefan Hundhammer <sh@xxxxxxx>
  • Date: Tue, 20 Nov 2007 16:34:19 +0100
  • Message-id: <200711201634.19776.sh@xxxxxxx>
On Tuesday 20 November 2007 16:23, Katarina Machalkova wrote:
I'd like to use this way to announce that with mod-ui transition, HVStretch
widget has been dropped and it should no longer be used. Should you still
need it in your module, consider using e.g. `Empty, or some combination of
`HStretch and `VStretch.

Some more background:

HVStretch() was the two-dimensional counterpart of HStretch() and VStretch(),
which both are mostly useful in a VBox() or HBox(). But since both VBox() and
HBox() operate only in one dimension anyway, only a VStretch() in a VBox() or
a HStretch() in a HBox() has any effect.

Both widgets could also be written as

`VStretch() -> `Empty(`opt(`vstretch))
`HStretch() -> `Empty(`opt(`hstretch))

or as

`VStretch() -> `VSpacing(`opt(`vstretch), 0 )
`HStretch() -> `HSpacing(`opt(`hstretch), 0 )

but that looks very ugly and is not very intuitive, of course.

In the few places where `HVStretch() was actually used, it was used somewhat
incorrectly: In yast2-certify it was used where `VStretch() should have been
used, in yast2-ldap-client it was used as a placeholder for `ReplacePoint()
contents. In the latter case, `Empty() is much more natural (and tells
something like "this is just a dummy that will be replaced soon").

If anybody should really find a real use for the two-dimensional `HVStretch()
(which I really doubt), it can be replaced with

`HVStretch() -> `Empty(`opt(`hstretch, `vstretch))

The documentation on UI widgets should be updated as well

I have a local copy available at

http://w3.suse.de/~sh/libyui-doc/

CU
--
Stefan Hundhammer <sh@xxxxxxx> Penguin by conviction.
YaST2 Development
SUSE LINUX Products GmbH, GF: Markus Rex, HRB 16746 (AG Nürnberg)
Nürnberg, Germany
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