On Wed, Jun 18, 2003 at 07:07:40AM -0400, Rouben Rostamian wrote: > Dominik Vogt <fvwm@fvwm.org> wrote: > > On Tue, Jun 17, 2003 at 11:35:31PM -0400, Rouben Rostamian wrote: > > > I am hitting a mental block in reading the section of the fvwm man > > > page on Conditional Commands. > > > > > > We read: > > > > > > Next [(conditions)] command > > > Performs command (typically Focus) on the > > > next window which satisfies all conditions. > > > > > > Prev [(conditions)] command > > > Performs command (typically Focus) on the > > > previous window which satisfies all conditions. > > > > > > My question is: when should I use Next and when should I use Prev > > > in a script? > > > > > > For instance, let's consider the following example from the man page: > > > > > > AddToFunc MailFunction > > > + I Next ($0) Iconify off > > > + I Next (AcceptsFocus, $0) focus > > > + I None ($0) Exec exec $0 $1 > > > > > > Why is Next used here? Why not Prev? What's the difference? > > > > Windows are stored in a ring internally. Think of the focused > > window as a cursor on the current position in the ring. Next > > searches forwards through the ring for a matching window, and Prev > > searches backwards. The windows in the ring are either ordered by > > creation time or by the last time they had the focus (depending on > > the focus policy). > > > > In this specific case there is no noteworthy difference between > > Next and Prev because there are either zero or one windows of the > > given type. We use Next in such examples out of habit and because > > Prev might be a bit confusing. > > Thanks, Dominik, for this very clear explanation. Shouldn't this > be in the man page?
Done. > Now that you are at it, would you also elaborate on your parenthetical > remark "(depending on the focus policy)"? Is there an easy way to > explain how the focus policy determines the order in the ring? SloppyFocus and ClickToFocus order the ring in last-focus-order, the other policies use creation-order. Bye Dominik ^_^ ^_^ -- Dominik Vogt, [EMAIL PROTECTED] Reply-To: [EMAIL PROTECTED] -- Visit the official FVWM web page at <URL: http://www.fvwm.org/>. To unsubscribe from the list, send "unsubscribe fvwm" in the body of a message to [EMAIL PROTECTED] To report problems, send mail to [EMAIL PROTECTED]
