After porting the more complex cases - in particular those that
affect a module's API - we are left with straight-forward D-Bus
method calls that can be moved to promise-based wrappers in one
go.
For consistency, this also switches from Remote to Async where
the call result is ignored.
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2344>
Our search provider API has to be asynchronous to support remote
providers. It doesn't have to be based on callbacks though, now
that async functions provide a nicer alternative.
That is particularly true after gjs's D-Bus wrapper started to
generate promise-based method variants.
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2344>
Provider loading has been synchronous since 2013, so we can
just as well return the results directly instead of passing
them to a callback.
Even if we returned to asynchronous loading in the future,
we wouldn't want to use a callback, but make the function
itself async.
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2344>
We have made good progress on object literals as well, although there
are still a lot that use the old style, given how ubiquitous object
literals are.
But the needed reindentation isn't overly intrusive, as changes are
limited to the object literals themselves (i.e. they don't affect
surrounding code).
And given that object literals account for quite a bit of the remaining
differences between regular and legacy rules, doing the transition now
is still worthwhile.
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2200>
Promises make asynchronous operations easier to manage, in particular
when used through the async/await syntax that allows for asynchronous
code to closely resemble synchronous one.
gjs has included a Gio._promisify() helper for a while now, which
monkey-patches methods that follow GIO's async pattern to return a
Promise when called without a callback argument.
Use that to get rid of all those GAsyncReadyCallbacks!
https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1126
ES6 allows to omit property names where they match the name of the
assigned variable, which makes code less redunant and thus cleaner.
We will soon enforce that in our eslint rules, so make sure we use
the shorthand wherever possible.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/805
While we aren't using those destructured variables, they are still useful
to document the meaning of those elements. We don't want eslint to keep
warning about them though, so mark them accordingly.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/627
We are currently inconsistent with whether or not to put a space
after catch clauses. While the predominant style is to omit it,
that's inconsistent with the style we use for any other statement.
There's not really a good reason to stick with it, so switch to
the style gjs/eslint default to.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/607
We can use that newer method where we don't care about the actual position
of an element inside the array.
(Array.includes() and Array.indexOf() do behave differently in edge cases,
for example in the handling of NaN, but those don't matter to us)
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/152
ES6 finally adds standard class syntax to the language, so we can
replace our custom Lang.Class framework with the new syntax. Any
classes that inherit from GObject will need special treatment,
so limit the port to regular javascript classes for now.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/361
When not using arrow notation with anonymous functions, we use Lang.bind()
to bind `this` to named callbacks. However since ES5, this functionality
is already provided by Function.prototype.bind() - in fact, Lang.bind()
itself uses it when no extra arguments are specified. Just use the built-in
function directly where possible, and use arrow notation in the few places
where we pass additional arguments.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/23
Commit 289f982949 broke all remote providers when adding support for
non-auto-started search providers: Whether the provider should be
auto-started needs to be known in the constructor, so setting the
property on the constructed object doesn't work.
https://bugzilla.gnome.org/show_bug.cgi?id=787986
This would be used by search providers which only operate on data in the
running instance, such as the terminal's search provider which finds the
shell in the tab matching the search text.
https://bugzilla.gnome.org/show_bug.cgi?id=785380
Any symbols (including class properties) that should be visible
outside the module it's defined in need to be defined as global.
For now gjs still allows the access for 'const', but get rid of
the warnings spill now by changing it.
https://bugzilla.gnome.org/show_bug.cgi?id=785084
Commit 39a840e2c3 added an additional parameter to shell_app_launch().
When adjusting callers, the parameter was also added accidentally to
calls of the confusingly similar g_app_info_launch() ...
Remove those to fix some warnings.
https://bugzilla.gnome.org/show_bug.cgi?id=781471
While we've always considered it good style to initialize JS properties,
some code that relies on uninitialized properties having an implicit
value of 'undefined' has slipped in over time. The updated SpiderMonkey
version used by gjs now warns when accessing those properties, so we
should make sure that they are properly initialized to avoid log spam,
even though all warnings addressed here occur in conditionals that
produce the correct result with 'undefined'.
https://bugzilla.gnome.org/show_bug.cgi?id=781471
Some search providers such as GNOME Characters want to copy search
results to clipboard. However, on Wayland, clipboards are only
accessible from applications that have a visible surface on display.
This patch allows a search provider to request the shell to copy a
search result to clipboard when 'clipboardText' is included in the meta
of the result.
https://bugzilla.gnome.org/show_bug.cgi?id=775099
And adapt existing callers to the new API. This will allow us to
implement a way to launch applications on the discrete GPU for systems
where an "Optimus" system exists.
https://bugzilla.gnome.org/show_bug.cgi?id=773117
In recent glib, change notifications don't actually happen unless all
keys have been read, in an effort to reduce unnecessary dbus
traffic for shortlived GSettings object and avoid AddMatch calls.
But we care about changes here, so we need to make sure we're
subscribed, and an easy way to do so is to reuse the same object
to watch for changes and to load the active providers at startup.
https://bugzilla.gnome.org/show_bug.cgi?id=746509
This closes a race between setTerms and a slow GetInitialResultSet.
The bug manifests as follows:
- initial search for a short string
- previous results === undefined, call GetInitialResultSet
- user types more, cancel previous search in setTerms()
- mainloop, then _gotResults([])
- previous results === [], !!previous results === true
- therefore call GetSubsearchResultSet with an empty list of results
- _gotResults() from GetSubsearchResultSet is empty
- much later, return from GetInitialResultSet is discarded by
cancellable
- user unhappy because what he searched for is not there
After this fix, the flow is:
- initial search for a short string
- previous results === undefined, call GetInitialResultSet
- user types more, cancel previous search in setTerms()
- mainloop, but no _gotResults
- previous results === undefined, call GetInitialResultSet again with
longer string
- some time later, return from first GetInitialResultSet is discarded
by cancellable
- soon after, return from second GetInitialResultSet comes with good
results
- user happy
https://bugzilla.gnome.org/show_bug.cgi?id=745861
Search providers that should be disabled by default come with
a DefaultDisabled=true key in their keyfile, and are enabled
with the "enabled" whitelist, not with the "disabled" blacklist.
https://bugzilla.gnome.org/show_bug.cgi?id=734110
The asynchronous nature of extension loading, session loading, and more,
makes the code racy as to what is initialized first, and hard to debug.
Additionally, since gjs is single-threaded, the only code we're running
in a thread anyway is readdir, which is going to be I/O bound, so the
code here is actually likely to be faster.
Drop this in favor of some good old fashioned synchronous loading.
Long ago, the search system worked in a synchronous manner: providers
were given a query, and results were collected in a single array of
[provider, results] pairs, and then the search display was updated
from that.
We introduced an asynchronous search system when we wanted to potentially
add a Zeitgeist search provider to the Shell in 3.2. For a while, search
providers were either async or sync, which worked by storing a dummy array
in the results, and adding a method for search providers to add results
later.
Later, we removed the search system entirely and ported the remaining
search providers to simply use the API to modify the empty array, but the
remains of the synchronous search system with its silly array still
lingered.
Finally, it's time to modernize. Promises^WCallbacks are the future.
Port the one remaining in-shell search engine (app search) to the new
callback based system, and simplify the remote search system in the
process.
