Manually add gas changes to a dive

Create a little widget that lists all the gases / tanks we know about and
allow the user to pick one of them.

Turns out that add_event only added events at the end of the list - but we
treat that list as chronologically sorted. So I fixed that little
mis-feature as well.

This does raise the question whether we need the inverse operation
(removing a gas change). And if there are other things that we should be
able to manually edit, now that we have the infrastructure for this neat
little context menu...

See #60 -- this doesn't address all of the issues mentioned there, but at
least deals with the 'headline' of the feature request...

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 4 insertions, 2 deletions

diff --git a/dive.c b/dive.c
index da80044ed..0351b8ba6 100644
--- a/dive.c
+++ b/dive.c
@@ -21,11 +21,13 @@ void add_event(struct divecomputer *dc, int time, int type, int flags, int value
 	ev->type = type;
 	ev->flags = flags;
 	ev->value = value;
-	ev->next = NULL;
 
 	p = &dc->events;
-	while (*p)
+
+	/* insert in the sorted list of events */
+	while (*p && (*p)->time.seconds < time)
 		p = &(*p)->next;
+	ev->next = *p;
 	*p = ev;
 	remember_event(name);
 }