When swaynag_parse_options encounters '--dismiss-button' (or its
shorthand '-s'), it sets the text of the first button in the
swaynag.buttons list, which is expected to exist and to be the dismiss
button, to the one passed by the user.
Commit 4780afb68b4ee2cdf0e4925f40cf885819f8a74a ("swaynag: statically
allocate button_close, and move declaration") moved the list
initialization to after swaynag_parse_options is called which made that
code fail.
For example, the command 'swaynag --dismiss-button Dismiss' crashes and
'swaynag --message Message --button Yes "" --dismiss-button Dismiss'
shows the wrong buttons.
Move it back to before swaynag_parse_options is called.
This revamps the type configs for swaynag. All sizing attributes for
swaynag are now `ssize_t` instead of `uint32_t` to allow for a default
value of `-1`, which allows for `0` to be a valid value. Additionally,
the initialization of the type configs has been changed from a simple
calloc to use a new function `swaynag_type_new`. `swaynag_type_new`
calloc's the memory, checks for an allocation failure, sets the name,
and all sizes to -1. The layering order has also been changed to
default, general config, type config, and as highest priority command
line arguments. Finally, `swaynag_type_merge` has been modified to
handle the layering and sizing changes.
This commit mostly duplicates the wlr_log functions, although
with a sway_* prefix. (This is very similar to PR #2009.)
However, the logging function no longer needs to be replaceable,
so sway_log_init's second argument is used to set the exit
callback for sway_abort.
wlr_log_init is still invoked in sway/main.c
This commit makes it easier to remove the wlroots dependency for
the helper programs swaymsg, swaybg, swaybar, and swaynag.
