[Github-comments] [geany/geany] Gi signals (#1038)

[Colomban Wendling]

For most use case having our signals on an "application" object makes sense, as they are meant as global events.  We could have object-specific ones, but some are truly useful as is, not only `new` and `open` can't be on a `Document` object as @kugel- pointed out, but many others are really handy to have globally instead of one handler per document: many plugin don't really care to attach to each document, and rather want the event in any one.  This avoids doing stuff like `foreach (geany_documents as doc) { doc.connect(...); }`, which would also be less optimized, and would require to also `geany_app.connect("document-new", (app, doc) => { doc.connect(...) })` and same for `new`.
My point being that some signals are great for global events and make sense to be on the application/window rather than on each specific document (or alike).

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