- When the compositor creates a shell_surface having the TOPLEVEL type,
it sets a numeral ID for it, and sends a "map" event to the
desktop_shell client ;
You must allow a "toplevel" to become a non-toplevel and vice-versa,
otherwise useful api for rearranging windows is impossible. My
recommendation is that a surface has a "parent" that can be changed at
any time to any other surface or to NULL, the only restriction is that a
loop cannot be created. In any case please do not make a "type" called
TOPLEVEL.
- if it should be hidden, then the compositor sends the shell_surface to
a new
weston_layer named "taskbar_layer". This layer is not displayed at all.
NO! The compositor must only send a "hide request" to the client. The
client MUST be in final control over when and how it's surfaces
disappear. This is to allow it to atomically remove child surfaces or to
reparent them to other surfaces that are not being hidden.
When their "minimize" button is pressed, they now call a
taskbar_move_surface()
function which will do the former, and additionally send a hint to the
desktop_shell
that this has been done (so the corresponding taskbar button stays tuned).
I'm not clear on why the former api can't do this and you felt a new api
had to be added.
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