Introduce a new class, EventEmitter, which implements signal
handling for pure JavaScript classes. EventEmitter still
utilizes GJS' addSignalMethods internally.
EventEmitter allows static typechecking to understand the
structure of event-emitting JS classes and makes creating
child classes simpler.
The name 'EventEmitter' mirrors a common name for this pattern
in Node and in JS libraries.
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2043>
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
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
The first time that the session is started, it can happen that the
AT SPI hasn't been correctly initialized, and this results in a crash
when attempting to register the caret or focus listeners.
In order to avoid this, these changes check the result of initializing
the AT SPI, to allow further attempts when it has failed.
https://bugzilla.gnome.org/show_bug.cgi?id=785047
In addition to checking the current settings, check also if the
zoom region is active before registering the event listener.
This way, we avoid DBus traffic for events we're not interested in.
Also, make FocusCaretTracker resilient to multiple register/deregister
calls (which can now happen).
https://bugzilla.gnome.org/show_bug.cgi?id=724305
Have AT-SPI calls time out after 250ms, to mitigate the effect of a
deadlock when querying another application that is trying to query
gnome-shell.
https://bugzilla.gnome.org/show_bug.cgi?id=708387
A11y users who use the magnifier may have trouble
focusing when they're typing or trying to keynav.
Implement a new system so that they can have the
magnifier track the caret and focus instead instead
of just the mouse.
Bug https://bugzilla.gnome.org/show_bug.cgi?id=647074
