When destructuring multiple return values, we often use trailing commas
to indicate that there are additional elements that we are ignoring.
There isn't anything inherently wrong with that, but it's a style that's
too confusing for eslint - on the one hand we require a space after a
comma, on the other hand we require no space before closing brackets.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/607
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
While allowed by the syntax, they are problematic because the
variable is in the scope of the switch() statement, but only
valid if a particular case clause is reached.
Add braces to limit the variables' scope to the corresponding
case clause to avoid that problem.
Spotted by eslint.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/607
Converting a variable to a particular type can be done explicitly (with
functions like Number() or toString()) or implicitly by relying on type
coercion (like concatenating a variable to the empty string to force
a string, or multiplying it with 1 to force a number).
As those tend to be less readable and clear, they are best avoided. So
replace the cases of string coercion we use with template strings, and
clarify the places that can be confused with number coercion.
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
Control flow statements like return, break or continue are considered
unsafe in finally blocks, as they take precendence over any control
flow statement in the try and catch blocks, which may be unexpected.
This isn't the case here as the statement in the finally block is the
only one, but we can just as well avoid the finally block altogether
and use a regular return statement.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/606
This vfunc override has been introduced to ensure app icons are always
squared, but since the container of the AppIcon gets a square allocation
anyway if the 'square' property of the SwitcherButton is set, there's
no need to return a special width here.
Without the override we can also stop setting the size of the iconBin
manually. And since shell_app_create_icon_texture() uses logical pixels
but clutter_actor_set_size() uses screen pixels, that means we now no
longer set the size of the icon back to the unscaled value after it was
already correct.
Fixes https://gitlab.gnome.org/GNOME/gnome-shell/issues/1325
We're calculating icon sizes for the alt tab switcher early and at a
point where the style attributes of this._list are not loaded yet. To
make sure the value of this._list.spacing is correct, call
ensure_style() on this._list before accessing the spacing.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/587
The polkit password dialog has a spinner that gets displayed
while the users password is being verified.
Unfortunately, the spinner stop method unintentionally calls
back into itself after the stop fade out animation is complete.
The stop method is called at startup, so the looping begins as
soon as the dialog is visible and continues until the dialog is
dismissed.
This commit fixes the loop by having the stop method cease
calling itself, and instead having it call the stop method on the
superclass.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/602
The polkit password dialog has a spinner that gets displayed
while the users password is being verified.
Unfortunately, the spinner stop method unintentionally calls
back into itself after the stop fade out animation is complete.
The stop method is called at startup, so the looping begins as
soon as the dialog is visible and continues until the dialog is
dismissed.
This commit fixes the loop by having the stop method cease
calling itself, and instead having it call the stop method on the
superclass.
While the confirmation dialog for extension installation is simpler
than - say - authentication dialogs, it still makes sense to re-use
the common content layout instead of duplicating it.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/600
Using one variable to initialize all gestures will update the address of
the "gesture" pointer with every newly initialized object. This means
that event handlers which also use the "gesture" pointer like the
'keyboard-visible-changed' handler will update a different gesture as
soon as the pointer is changed.
This lead to a bug where the handler of 'keyboard-visible-changed'
wrongly nabled the unfullscreen gesture. Fix that by assigning each
gesture its own variable.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/598
In practice this has been seen to fail:
JS ERROR: TypeError: active.get_devices(...)[0] is undefined
ensureActiveConnectionProps@resource:///org/gnome/shell/ui/status/network.js:73:22
_getMainConnection@resource:///org/gnome/shell/ui/status/network.js:1791:13
_syncMainConnection@resource:///org/gnome/shell/ui/status/network.js:1809:32
https://gitlab.gnome.org/GNOME/gnome-shell/issues/1406
Since commit 520cea9394, the opacity of icon grid children is used
both to skip children outside the current viewport and to hide the
real icons while animating icon clones.
As a result, a grid animation during an animation now ends up showing the
icons that are being animated. Avoid that glitch by leaving children's
opacity alone when there's an ongoing animation.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/582
AllView's adaptToSize is called as part of viewStack allocation vfunc, and this
makes the adjustment value to be reset while relayouting.
So, fix this by delaying this using the Meta later that we already had for
pageIndicators operations.
Fixes: https://gitlab.gnome.org/GNOME/gnome-shell/issues/1392
Since the repositioning is now done during allocation, we can just queue
a relayout when setting the boxpointer positioning via the source actor.
As per this _relayout() and _updateFlip now needs to be called during allocation
only and with an allocation box set.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/576
Changing the arrow side might need to reposition the boxpointer, however
if this happens during allocation, we don't need to trigger a new relayout since
we'd set the new allocation once _updateFlip's _reposition call is terminated,
otherwise if the position has changed, changing the boxpointer coordinates
will trigger a relayout anyways.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/576
As per commit 044572cb60 boxpointer uses its own coordinates to position itself.
However this would lead to warning when mutter-clutter is compiled with debug
options as we'd might try to set the box coordinates during the allocation
cycle.
So, when calling _reposition during allocation, instead of setting the actor's
coordinates we just pass the allocation box and we adjust its origin, in order
to set it properly in the vfunc.
Fixes https://gitlab.gnome.org/GNOME/gnome-shell/issues/1382https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/576
Hiding a child implies a parent reallocation, and IconGrid does it for the
children that doesn't fit in the available space, but this could lead to an
allocation recursion cycle. This has been introduced by commit 0e0574a0 to
reduce CPU usage not to using JS vfuncs.
To avoid this, toggle the children opacity instead so that we can achieve the
same visibility result, without any reallocation need.
In this way we also fix the case where hidden children can be shown again,
as _getVisibleChildren doesn't filter-out transparent ones, restoring the
pre-commit 0e0574a0 behavior.
Fixes https://gitlab.gnome.org/GNOME/gnome-shell/issues/1336https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/559
Background is monitoring the whole `org.gnome.desktop.background` gsettings keys
for changes connecting to the non-specialized 'changed' signal and re-emitting
this as-is.
This means that when the background is changed via control-center, we get
multiple 'changed' signal events from GSettings, and for each one of this we
recreate a Background and a BackgroundActor.
Avoid this by using an idle to delay the emission of the 'changed' signal
grouping the events.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/558
The same Meta.Background could be used by multiple instances of background
actors, and so should not be disposed when the actor using it is destroyed.
Instead of calling `run_dispose` directly on it, just nullify the reference
on destroy method, leaving the job of doing the proper disposition to the
gabage collector that keeps the proper reference count on the Meta.Background.
Fixes https://gitlab.gnome.org/GNOME/gnome-shell/issues/501https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/558
Adds the UI part for the pointer accessibility features.
The various timeouts running are notified using a pie-timer showing
under the pointer.
For dwell-click type selection, we use a drop-down menu. Users can
use the dwell-click to select the next type of dwell click to be
emitted.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/474
Starting from commit 7bb84dae, GrabHelper requires the owner to be an Actor as
we pass this to pushModal that assumes it to be as well.
So check that GrabHelper owner is an actor and throws an error if it is not the
case. This helps in tracking down issues such as gnome-shell-extensions!68
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/565
The `switch-to-application-n` shortcuts are essentially "launch the nth
app in the dash" actions, so they are at the very least confusing when
the dash isn't available because the overview itself is disabled (for
example in initial-setup mode).
So disable the shortcuts when the overview is disabled, but delegate the
decision to a separate function so that extensions like 'panel-favorites'
which expose favorites by some other means can easily re-enable them.
https://gitlab.gnome.org/GNOME/gnome-shell/issues/1333
A menu item activation might lead to a call to `itemActivated` which eventually
will close the menu which leads to a `PopupMenu.removeAll` that destroys all the
items, stopping the emission of the 'activate' signal for them.
Before commit 4258ae3e this was not happening because destroy'ing a javascript
object wasn't really disposing it and thus stopping the signal emissions.
So, ensure that `itemActivated` is called after that all the other callbacks
have been consumed, and so that the menu is closed as last thing.
Fixes https://gitlab.gnome.org/GNOME/gnome-shell/issues/1326https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/557
The 'destroy' signal is emitted at the end of the destroy() method.
However the implementation of destroy() can end up emitting one of the
signals we connect to on the window, causing us to re-enter destroy
from its callback.
That will in turn lead to some objects getting disposed twice, which
produces a stack trace like the following one.
This commit fixes the issue by overriding the destroy() method instead
of connecting to the signal, which allows us to disconnect the signal
handlers from the window at an earlier time and avoid re-entrancy.
--
gnome-shell[1082]: Object Gio.Settings (0x7f0af8143f00), has been already deallocated — impossible to access it. This might be caused by the object having been destroyed from C code using something such as destroy(), dispose(), or remove() vfuncs.
org.gnome.Shell.desktop[1082]: == Stack trace for context 0x5627f7d1e220 ==
org.gnome.Shell.desktop[1082]: #0 5627f9e801a8 i resource:///org/gnome/shell/ui/messageTray.js:238 (7f0aefa9eca0 @ 22)
org.gnome.Shell.desktop[1082]: #1 5627f9e80108 i resource:///org/gnome/shell/ui/messageTray.js:802 (7f0aefaa2ee0 @ 28)
org.gnome.Shell.desktop[1082]: #2 5627f9e80070 i resource:///org/gnome/shell/ui/windowAttentionHandler.js:79 (7f0aef7b29d0 @ 62)
org.gnome.Shell.desktop[1082]: #3 7fffa69fbfc0 b self-hosted:979 (7f0aefa515e0 @ 440)
org.gnome.Shell.desktop[1082]: #4 5627f9e7ffe0 i resource:///org/gnome/shell/ui/messageTray.js:121 (7f0aefa9e1f0 @ 71)
org.gnome.Shell.desktop[1082]: #5 5627f9e7ff38 i resource:///org/gnome/shell/ui/messageTray.js:1408 (7f0aefaa58b0 @ 22)
org.gnome.Shell.desktop[1082]: #6 5627f9e7fe80 i resource:///org/gnome/shell/ui/messageTray.js:1237 (7f0aefaa51f0 @ 729)
org.gnome.Shell.desktop[1082]: #7 5627f9e7fde8 i resource:///org/gnome/shell/ui/messageTray.js:1055 (7f0aefaa3d30 @ 124)
org.gnome.Shell.desktop[1082]: #8 7fffa69ff8e0 b self-hosted:979 (7f0aefa515e0 @ 440)
org.gnome.Shell.desktop[1082]: #9 7fffa69ff9d0 b resource:///org/gnome/gjs/modules/signals.js:142 (7f0aefccb670 @ 386)
org.gnome.Shell.desktop[1082]: #10 5627f9e7fd58 i resource:///org/gnome/shell/ui/messageTray.js:479 (7f0aefaa0940 @ 50)
org.gnome.Shell.desktop[1082]: #11 5627f9e7fcb8 i resource:///org/gnome/shell/ui/messageTray.js:808 (7f0aefaa2ee0 @ 99)
org.gnome.Shell.desktop[1082]: #12 5627f9e7fc28 i resource:///org/gnome/shell/ui/windowAttentionHandler.js:69 (7f0aef7b28b0 @ 13)
org.gnome.Shell.desktop[1082]: #13 5627f9e7fb80 i resource:///org/gnome/shell/ui/main.js:566 (7f0aefcd8820 @ 216)
org.gnome.Shell.desktop[1082]: #14 5627f9e7fad0 i resource:///org/gnome/shell/ui/windowAttentionHandler.js:103 (7f0aef7b2c10 @ 27)
org.gnome.Shell.desktop[1082]: #15 5627f9e7fa58 i resource:///org/gnome/shell/ui/windowAttentionHandler.js:43 (7f0aef7b2700 @ 17)
org.gnome.Shell.desktop[1082]: #16 7fffa6a03350 b resource:///org/gnome/gjs/modules/signals.js:142 (7f0aefccb670 @ 386)
org.gnome.Shell.desktop[1082]: #17 5627f9e7f9d0 i resource:///org/gnome/shell/ui/messageTray.js:471 (7f0aefaa08b0 @ 22)
org.gnome.Shell.desktop[1082]: #18 5627f9e7f950 i resource:///org/gnome/shell/ui/calendar.js:752 (7f0aefaabdc0 @ 22)
org.gnome.Shell.desktop[1082]: #19 7fffa6a048f0 b self-hosted:979 (7f0aefa515e0 @ 440)
org.gnome.Shell.desktop[1082]: == Stack trace for context 0x5627f7d1e220 ==
org.gnome.Shell.desktop[1082]: #0 5627f9e801a8 i resource:///org/gnome/shell/ui/messageTray.js:239 (7f0aefa9eca0 @ 42)
org.gnome.Shell.desktop[1082]: #1 5627f9e80108 i resource:///org/gnome/shell/ui/messageTray.js:802 (7f0aefaa2ee0 @ 28)
org.gnome.Shell.desktop[1082]: #2 5627f9e80070 i resource:///org/gnome/shell/ui/windowAttentionHandler.js:79 (7f0aef7b29d0 @ 62)
org.gnome.Shell.desktop[1082]: #3 7fffa69fbfc0 b self-hosted:979 (7f0aefa515e0 @ 440)
org.gnome.Shell.desktop[1082]: #4 5627f9e7ffe0 i resource:///org/gnome/shell/ui/messageTray.js:121 (7f0aefa9e1f0 @ 71)
org.gnome.Shell.desktop[1082]: #5 5627f9e7ff38 i resource:///org/gnome/shell/ui/messageTray.js:1408 (7f0aefaa58b0 @ 22)
org.gnome.Shell.desktop[1082]: #6 5627f9e7fe80 i resource:///org/gnome/shell/ui/messageTray.js:1237 (7f0aefaa51f0 @ 729)
org.gnome.Shell.desktop[1082]: #7 5627f9e7fde8 i resource:///org/gnome/shell/ui/messageTray.js:1055 (7f0aefaa3d30 @ 124)
org.gnome.Shell.desktop[1082]: #8 7fffa69ff8e0 b self-hosted:979 (7f0aefa515e0 @ 440)
org.gnome.Shell.desktop[1082]: #9 7fffa69ff9d0 b resource:///org/gnome/gjs/modules/signals.js:142 (7f0aefccb670 @ 386)
org.gnome.Shell.desktop[1082]: #10 5627f9e7fd58 i resource:///org/gnome/shell/ui/messageTray.js:479 (7f0aefaa0940 @ 50)
org.gnome.Shell.desktop[1082]: #11 5627f9e7fcb8 i resource:///org/gnome/shell/ui/messageTray.js:808 (7f0aefaa2ee0 @ 99)
org.gnome.Shell.desktop[1082]: #12 5627f9e7fc28 i resource:///org/gnome/shell/ui/windowAttentionHandler.js:69 (7f0aef7b28b0 @ 13)
org.gnome.Shell.desktop[1082]: #13 5627f9e7fb80 i resource:///org/gnome/shell/ui/main.js:566 (7f0aefcd8820 @ 216)
org.gnome.Shell.desktop[1082]: #14 5627f9e7fad0 i resource:///org/gnome/shell/ui/windowAttentionHandler.js:103 (7f0aef7b2c10 @ 27)
org.gnome.Shell.desktop[1082]: #15 5627f9e7fa58 i resource:///org/gnome/shell/ui/windowAttentionHandler.js:43 (7f0aef7b2700 @ 17)
org.gnome.Shell.desktop[1082]: #16 7fffa6a03350 b resource:///org/gnome/gjs/modules/signals.js:142 (7f0aefccb670 @ 386)
org.gnome.Shell.desktop[1082]: #17 5627f9e7f9d0 i resource:///org/gnome/shell/ui/messageTray.js:471 (7f0aefaa08b0 @ 22)
org.gnome.Shell.desktop[1082]: #18 5627f9e7f950 i resource:///org/gnome/shell/ui/calendar.js:752 (7f0aefaabdc0 @ 22)
org.gnome.Shell.desktop[1082]: #19 7fffa6a048f0 b self-hosted:979 (7f0aefa515e0 @ 440)
gnome-shell[1082]: g_object_run_dispose: assertion 'G_IS_OBJECT (object)' failed
gnome-shell[1082]: Object Gio.Settings (0x7f0af8161750), has been already deallocated — impossible to access it. This might be caused by the object having been destroyed from C code using something such as destroy(), dispose(), or remove() vfuncs.
gnome-shell[1082]: g_object_run_dispose: assertion 'G_IS_OBJECT (object)' failed
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/555
Make the dialog a widget itself, removing the `_group` property used for
handling the actor.
Update all the inherited classes to be also GObject implementations, moving all
the signals to proper object ones.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/55
Since version 1.50.0, gjs defines GObject.NotImplementedError for throwing
errors when a "virtual" method that requires a subclass implementation is not
defined.
So use this instead of a generic JS Error in such cases.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/549
This extends the ShellMountPasswordDialog by widgets which allow
specifying parameters supported by TrueCrypt and VeraCrypt compatible
volumes (TCRYPT). This includes:
- Whether the volume to be unlocked is hidden.
- Whether the volume to be unlocked is a system partition.
Note: TrueCrypt and VeraCrypt only support encrypting Windows
systems [1], so the label for this option is "Windows System Volume".
- Whether to use a PIM [2].
- Whether to use keyfiles. Unfortunately, GMountOperation doesn't
support TCRYPT keyfiles, so if this checkbox is checked, we tell the
user that they should unlock the volume with Disks, which supports
unlocking TCRYPT volumes with keyfiles.
[1] https://www.veracrypt.fr/en/System%20Encryption.html
[2] https://www.veracrypt.fr/en/Header%20Key%20Derivation.htmlhttps://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/126
The top_window_group is used for windows like popup menus, which should
appear above shell chrome like the panel.
Since we want important actors such as the screen keyboard or modal
dialogs to be shown above those windows, add their actors after adding
global.top_window_group to this.uiGroup and provide a new function
addTopChrome() to add important chrome above the top_window_group.
Fixes https://gitlab.gnome.org/GNOME/gnome-shell/issues/917https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/358
Don't use composition for PopupBaseMenuItem, but instead inherit from BoxLayout.
So remove the internal actor, making all the menu items actor themselves.
Add an actor property as fallback to avoid warnings for usage in menus.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/499
gjs now supports an optional GTypeFlags value for GObject subclasses
defined with GObject.registerClass(), so it is not possible to define
abstract classes on the gobject-level, just like from C.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/517
When toggling keyboard various times, we might get an error because trying to
disconnect an idle that isn't set anymore.
This is because when we remove the idle, we don't unset the ID.
Also clear the idle when destroying the keyboard.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/540
The current page is going to be destroyed as part of _onKeyboardGroupsChanged
cleanup, however we don't unset its pointer, and thus we'd might try to call a
function using an invalidated pointer.
So, unset the this._current_page reference when its get destroyed, connecting
to destroy signal when setting it and disconnecting when changing page.
Fixes https://gitlab.gnome.org/GNOME/gnome-shell/issues/1281https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/540
The interface name when a device is added may not be the final one. For
example when using USB tethering, it will first appear as 'usb0' before
being renamed to something like 'enp0s20f0u1' depending on the port the
phone is plugged in.
As a result, we will ignore the new interface name in that case and fail
to associate the correct connection with the device: Instead of the
correct "USB Ethernet" (or user-customized name), it will show up as
"Ethernet".
Fix this by updating names and connections when a device's interface
property changes.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/534
This makes it possible to drag a window which appears connected with the
panel, even if it is not in focus. As a result, it should be easier to
manipulate side-by-side windows.
https://bugzilla.gnome.org/show_bug.cgi?id=679290
To prevent a small gap between windows in the workspace switching
animation, we temporarily shift windows up or down by the height of the
panel. This obviously breaks the animation for fullscreen windows, those
will overlap with the ones on the other workspace since there is no
panel shown in that case.
Fix this by checking whether the old or new workspace includes a
fullscreen window and don't shift the windows if there is one.
Fixes https://gitlab.gnome.org/GNOME/gnome-shell/issues/757https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/322
Dialog's subtitle or body could not be properly wrapped, while it's ellipsized
when the text's width doesn't exceed the container size.
Clutter text has an `ellipsize` property, however in dialog's subtitle and body
we have been setting the `ellipsize-mode` property to Pango.EllipsizeMode.NONE
that is not present in the underlying GObject.
Not being an error in javascript, gjs didn't warn us about this, while at the
same time the St.Label's default Pango.EllipsizeMode.END was used.
Fixes https://gitlab.gnome.org/GNOME/gnome-shell/issues/922https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/531
If an actor's allocation is outdated, clutter_actor_get_allocation_box()
will queue a relayout. That's why it's advised to not use the function
unless the allocation is known to be valid (namely during paint), but
in particular not from within get_preferred_width/height vfuncs.
Using the :allocation property (which may be outdated) would be better,
but in this case we can simply delegate the request to the correct actor.
https://gitlab.gnome.org/GNOME/gnome-shell/issues/1065
We were cleaning up self._groups, but the actors for all previous
groups/layers/modes would remain attached to the aspect container,
simply hidden.
Under some circumstances this can really make the amount of actors
in the shell stage to quickly ramp up, it's not just a "leak" but
also has potential side effects on performance.
We should destroy all child actors of this._aspectContainer, except
the static ones (emoji and keypad).
While at it, fix this._groups re-initialization, as it's actually an
object, not an array.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/523
Closes?: https://gitlab.gnome.org/GNOME/mutter/issues/556
We currently assume that every location has an associated timezone.
While this is sound in the real world, in practise it depends on
whether or not libgweather can find a corresponding timezone DB
entry.
This used to be a fringe case, but has become more likely when commit
https://gitlab.gnome.org/GNOME/libgweather/commit/d7682676ac9 moved
weather stations from cities to countries - the station itself is un-
likely to have a timezone entry, and the country may be part of more
than a single timezone.
It would be good for libgweather to return a timezone for those
locations again, but we should defend against the case anyway.
We cannot tell what time it is at a particular location without
knowing the timezone, so simply filter them out.
https://gitlab.gnome.org/GNOME/gnome-shell/issues/1062
The top bar handles allocating all its children itself, so there's
little value in chaining up to st_widget_allocate() and get the
default layout manager allocating all children again (and possibly
differently).
If this happens, we end up with an infinite allocation cycle with
corresponding performance penalty. Fix this by just doing and what
Shell.GenericContainer did before commit 286ffbe2b6 replaced it,
and not chain up to StWidget.
Thanks to Robert Mader for debugging the issue.
https://gitlab.gnome.org/GNOME/gnome-shell/issues/1054
