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[qwaq] Catch adding bad messages to listeners

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Better an informative error than a "null function" error.
This commit is contained in:
Bill Currie 2020-03-30 22:51:18 +09:00
parent 1a34f3663a
commit 2e1bddb94c
1 changed files with 3 additions and 0 deletions
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3
ruamoko/qwaq/ui/listener.r
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@ -18,6 +18,9 @@
self.responder = responder;
self.message = message;
imp = [responder methodForSelector: message];
if (!imp) {
[self error:"method not found: %s", sel_get_name (message)];
}
return self;
}