Commit Graph

8105 Commits

Author SHA1 Message Date
Carlos Garnacho
0b16565e70 keyboard: Handle edge drag gesture cancellation
Hide the keyboard again if the gesture happens to stay/return
within it's activation threshold.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1668>
2021-02-17 15:45:01 +00:00
Carlos Garnacho
c62177e669 keyboard: Make OSK follow gesture progress
With all other gestures offering live feedback of progress, seems
to make sense to update the "swipe from bottom edge to show OSK"
gesture as well.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1668>
2021-02-17 15:45:01 +00:00
Carlos Garnacho
8526776b4a keyboard: Use translation-y property for focus window animations
Just the intermediate state, we still need to synchronize visual and
real window position after the animation.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1668>
2021-02-17 15:45:01 +00:00
Carlos Garnacho
3346e9923b keyboard: Move monitor management to KeyboardController
Instead of setting it deep down, manage it at the higher level.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1668>
2021-02-17 15:45:01 +00:00
Carlos Garnacho
0a12405e01 keyboard: Simplify focus window tracking
Keep the focus window in a single field, and optionally animate
depending on keyboard visibility.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1668>
2021-02-17 15:45:01 +00:00
Carlos Garnacho
a6a4e0a504 edgeDragAction: Add signal to notify about progress
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1668>
2021-02-17 15:45:01 +00:00
Carlos Garnacho
8e73143b24 keyboard: Drop layoutManager's keyboard-visible-changed
Since now the signal is emitted and handled all within keyboard.js,
use an internal signal to manage keyboard visibility and gesture
enablement.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1668>
2021-02-17 15:45:01 +00:00
Carlos Garnacho
0580fe6eff windowManager: Move OSK gesture to KeyboardManager
It would be nice to get finer control over the keyboard slide
gesture and animation. Move the gesture bits so they are together
at keyboard.js.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1668>
2021-02-17 15:45:01 +00:00
Carlos Garnacho
f52cafeb4a layout: Move keyboard slide animation to keyboard
The animation handling is kinda split between layout (for the
keyboard slide), and keyboard (for the focus window slide). It
would be nice to have more fine grained control on those, so
move the animation handling altogether to keyboard.js as a start.

This is roughly similar, except that transformations apply to
the Keyboard actor, instead of the keyboardBox (its parent). We
now queue a relayout after the animation in order to update the
chrome tracking.

The only layering break now is that we emit
layoutManager::keyboard-visible-changed in keyboard.js, its
purpose will be dropped in future commits, so leave it there for
now.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1668>
2021-02-17 15:45:01 +00:00
Carlos Garnacho
76836fe388 overview: Synchronize panel opacity with overview leave animation
Gestures leaving the overview from a short distance result in an
ugly effect with the panel opacity transitionhaving a fixed duration.
Make this transition have the same duration (although in a hackish
way) so we avoid the ugly effect.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1643>
2021-02-17 14:06:11 +01:00
Carlos Garnacho
f7f46ca9ac overview: Clean up dead code
These unused functions accessed undefined functions on a now undefined
variable/class. This vestigial code can go away.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1643>
2021-02-17 14:06:11 +01:00
Carlos Garnacho
cd506d45ef overview: Make 3fg vertical swipes bring overview and app grid
The gesture internally manipulates the main adjustment so one swipe
up brings up the overview, and a second swipe up brings the app
grid. The gesture also works in the other direction to get out of
the overview.

Internally, this is delegated on the OverviewControls, so the
adjustment is not leaked out of there. This however meant open
coding the gesture interaction so it can be directed from
overview.js code.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1643>
2021-02-17 14:06:11 +01:00
Carlos Garnacho
ddb8782179 overviewControls: Add "gesture-in-progress" property on the state adjustment
This will be set whenever an event controller is manipulating the adjustment.
It should enter the same transitional state it does for animations. This
will be used by the overview gesture.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1643>
2021-02-17 14:06:11 +01:00
Carlos Garnacho
f69727464c workspacesView: Initialize/update swipe orientation before gesture
Separate this logic from _switchWorkspaceBegin() and ensure it is set
before this call. The SwipeTracker code uses the orientation to determine
whether the gesture should begin at all, so changing the orientation on
gesture begin was a bit too late.

But also, that meant the SwipeTracker was left at the default orientation,
which was vertical (unlike workspaces, and like the overview gesture).
This made both swipe trackers try to handle the same swipe, with the
WorkspacesView being doubly unfortunate (for triggering in the first place,
and for happening after the other gesture did queue relayouts on it).

Taking this logic outside of _switchWorkspaceBegin() and having the right
orientation beforehand results in both gestures looking for their direction,
and not meddle with each other.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1643>
2021-02-17 14:06:11 +01:00
Carlos Garnacho
a498d8577e workspacesView: Check for primaryView being null
This is possible according to the getter, and triggers warnings
seen when going back from overview via gestures.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1643>
2021-02-17 14:06:11 +01:00
Carlos Garnacho
ea881ed077 swipeTracker: Reject touch swipes in the wrong directions
We now have multiple touch swipe gestures with matching fingers and
different directions set on the overview hierarchy. Accepting all
touch swipes without checking the direction makes one of these gestures
take control of input, without other gestures having a say on this.

So, look for the direction of the touch events and look if it matches
the expected orientation before accepting the gesture.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1643>
2021-02-17 14:06:11 +01:00
Carlos Garnacho
504ca7d4c3 swipeTracker: Try harder to start touchpad gestures with a direction
Make the touchpad gesture keep track of its state, and enter in a
rejected state if the swipe is happening in the wrong direction.

Effectively, this means touchpad gestures are locked on a single
direction, and horizontal+vertical swipeTrackers won't be handling
events at the same time.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1643>
2021-02-17 14:06:11 +01:00
Florian Müllner
e135f077fb swipeTracker: Reject touchpad swipes in the wrong directions
We now have multiple touch swipe gestures with matching fingers and
different directions set on the overview hierarchy. Accepting all
touchpad swipes without checking the direction makes one of these gestures
take control of input, without other gestures having a say on this.

So, look for the direction of the swipe events and look if it matches
the expected orientation.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1643>
2021-02-17 14:06:11 +01:00
Sebastian Keller
8edfe1dcf6 dnd: Remove pointless scale factor from restore position
Since 629b7394 we don't use the preferred size anymore, but the original
allocation, so this scale factor would always be 1.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1687>
2021-02-17 10:12:00 +00:00
Sebastian Keller
a24a16c5ac dnd: Also consider indirect scaling of dnd actor
Some actors don't have the scale applied to them directly but are
children of a scaled parent. In those case just retaining the scale will
not be enough and the scale of the actor itself needs to be adjusted
when reparenting. This could for example be seen when dragging windows
from the workspace thumbnails.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1687>
2021-02-17 10:12:00 +00:00
Marco Trevisan (Treviño)
cf41f4a527 searchController: Get rid of activePage reference in key handling
Even if activePage has been removed as part of commit 27627bd40, we've
still a reference of it in key press handler.

Given that there's no anymore an active page to redirect input to,
remove these references, so that can be handled in the proper view to
implement key-navigation.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1688>
2021-02-17 02:31:32 +01:00
Sebastian Keller
c01973055f workspace: Ensure that _createBestLayout() always returns a layout
When opening a large number of windows, the computed space and scale for
a layout can become negative due to the per-row/per-column spacing. This
is smaller than the initial values of lastSpace and lastSpace, leading
to a null return which then causes all sorts of other issues resulting
in the workspace becoming invisible.

This change ensures that the function always returns a layout, even if
it may look a bit broken and does not conform to the scale/space
requirements which are impossible to fulfill for the given number of
windows. It's better than displaying nothing, since it allows users to
move/close windows and restore this to a more usable state.

Fixes https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/3730

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1685>
2021-02-16 21:24:27 +00:00
Marco Trevisan (Treviño)
b74900b3a3 gdm: Override any other lower-priority service message on error
When we got an error, all the other HINT or INFO messages are not useful
anymore and delaying to show them is just a waste of time and may be
even wrong in scenarios with fast authentication devices.

An example are the fingerprint devices, where the user may touch the
sensor repeatedly while we may still show the "touch the sensor" hint
instead of notifying of possible errors.

So, in case we got an error override all the other errors coming from
the same service with lower priority.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1683>
2021-02-16 18:00:10 +00:00
Marco Trevisan (Treviño)
45a5171a95 gdm: Filter service non-error messages on verification stopped or failed
Once the verification has been stopped or has failed all the messages
that are not of error type are just not needed or wrong to show.
For example, in the fingerprint case we may still show the hint to swipe
or touch the device, while the fingerprint PAM service has already been
stopped.

So filter them by adding a new function that adds a null message to the
queue, overriding all the messages that have a lower priority.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1683>
2021-02-16 18:00:10 +00:00
Marco Trevisan (Treviño)
1cc20ca6b6 gdm: Add ability to queue a message overriding ones with less priority
There are cases in which a service may want to override a message with
one coming with higher priority, for example an info or hint message
isn't useful anymore if we've already got an error message.

In the same way when a service has been stopped we don't care anymore
showing its info or hint messages, while it still may be relevant to show
errors.

An example is the fingerprint service that may emit errors quickly while
the hints messages should not be kept around when an error is already
queued or when the service has been stopped.

So, add function that allows to override queued messages based by their
type that follows this policy:
 - Messages coming from different services are always preserved in
   their original order.
 - Messages (from the same service) with a priority equal or higher than
   the last queued one are preserved.
 - Messages matching completely the last queued are dropped in favor of
   this one.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1683>
2021-02-16 18:00:10 +00:00
Marco Trevisan (Treviño)
ef10bb6229 gdm: Keep messages in queue until we've not fully processed them
It can be convenient to get the currently showing message in order to
replace or remove it in case it's not needed anymore.

So simplify the message queue handling by only depending on a single
local variable (_messageQueue) and redefining hasPendingMessages
depending on its content.

Now messages are kept in queue till they are not fully processed and the
first message is always the one currently shown.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1683>
2021-02-16 18:00:10 +00:00
Marco Trevisan (Treviño)
9ecc1a4cd7 gdm: Compress fingerprint failures events using a timeout
When a fingerprint failure event happens we may also soon receive a
conversation-stopped event with an error message (such as in the case
we hit the MAXRETRIES value), but this is going to be ignored in case we
are too quick in consider the first failure a verification-failed event
because that implies disconnecting from all the events and then ignoring
such signals.

To prevent this, add a small timeout before failing the verification so
that if we get a further event we will process it.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1683>
2021-02-16 18:00:10 +00:00
Marco Trevisan (Treviño)
1ee9278786 gdm: Don't try to retry authenticating when the service is unavailable
In the case a service is not available (as it can be in the fingereprint
case when a supported reader is available but has not enrolled prints)
we were trying indefinitely to restart it, however this can lead to
troubles since commit 7a2e629b as when the service conversation was
stopped we had no way to figure out this case and we'd end up to
eventually fail the whole authentication.

However, in such cases the PAM services are expected to return a
PAM_AUTHINFO_UNAVAIL and gdm to handle it, emitting service-unavailable
signal.

So connect to ::service-unavailable and keep track of the unavailable
services so that we can avoid retrying with them.
In case such service is not the foreground one, we can just silently
ignore the error as we did before commit 7a2e629b, without bothering
failing the whole verification.

In case we got a valid error message on service-unavailable, we also
show it, this is normally not happening unless GDM isn't redirecting
here other kind of problems (such as MAXTRIES) which are supposed to
stop the authentication stopping any further retry.

Closes: https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/3734
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1683>
2021-02-16 18:00:10 +00:00
Jonas Dreßler
e65e5edee6 appDisplay: Use icon-size instead of width/height for system actions
When creating an icon for the system actions search provider, set the
icon size using StIcons own icon-size property instead of ClutterActors
width and height property. That ensures the scale factor is applied and
the icon will be properly scaled on hiDPI screens.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1686>
2021-02-16 13:56:20 +00:00
Jonas Dreßler
8f9d6a4c13 appDisplay: Use new indentation style
Otherwise eslint will complain about the next commit.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1686>
2021-02-16 13:56:20 +00:00
Sebastian Keller
1bd2b0123e windowPreview: Consider chrome overlaps when offscreening for opacity
The icon and close button might be overlapping the window actor but
were not considered in has_overlaps() which gets used to decide whether
to offscreen the actor for transparency. Since currently the icon is
visible when the preview is dragged and the whole actor is turned
transparent, the opacity will not be applied to everything as a whole
but the child actors individually. This leads to the window becoming
visible behind the icon.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1684>
2021-02-16 13:29:00 +00:00
Sebastian Keller
8d5fb73695 workspacesView: Don't invalidate allocation before using it for gesture
Calling startTouchGesture() on the workspacesViews can change the
visibility of the workspaces if not all of them are already shown, such
as when there are more than 3 workspaces or for 3 workspaces if we are
not on the central one. This invalidates the allocation and the width
used as distance for the gesture would become 0, resulting in drag
gestures immediately jumping to the first or last workspace due to a
division by 0.

Fixes https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/3721

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1682>
2021-02-16 03:50:52 +01:00
Sebastian Keller
629b7394f7 dnd: Set dnd actor size instead of scaling it when reparenting
Previously the actor could end up using its natural size and then get
scaled down to its allocation before reparenting. This however could
affect the layout of the widget due to the larger size. To ensure the
widget looks the same after reparenting set the size to its original
size.

Fixes https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/3717

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1680>
2021-02-16 01:07:23 +01:00
Marco Trevisan (Treviño)
7a2e629bd0 gdm: Fail and restart verification on conversation stopped for all services
Currently when the foreground service conversation stops we increase the
verification failed count and try to start it again, while if a
background service has been stopped we just ignore it.

This is causing a various number of issues, for example in the case of
the fingerprint authentication service, it is normally configured to die
after a timeout, and we end up never restarting it (while the UI still
keeps showing to the user the message about swipe/touch the device).

So, in such case let's just consider it a "soft" verification failure
that doesn't increase the failures count but will cause us to reset the
UI and try to restart the authentication (and so the affected service).

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1652>
2021-02-15 16:58:50 +00:00
Marco Trevisan (Treviño)
ed1ace1d99 authPrompt: Bump the user verifier timeout when wiggling the message
Wiggle may make the error message to be visible for less time so provide
the auth prompt an API to increase the timeout to be used for showing a
message in some cases.

This could be reworked when we'll have a proper asyn wiggle function so
that we could just make the user verifier to "freeze", then await for
the wiggle transition to complete and eventually release the verifier.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1652>
2021-02-15 16:58:50 +00:00
Marco Trevisan (Treviño)
75a1798e75 authPrompt: Wiggle error messages coming from the Fingerprint service
When error messages are coming from the fingerprint service they are actual
failures due to an user input in some device, in so in such case we
can highlight this by using a wiggle effect.

This mimics what has been done in gnome-control-center fingerprint panel
and part of [1].

[1] https://gitlab.gnome.org/Teams/Design/os-mockups/-/issues/56

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1652>
2021-02-15 16:58:50 +00:00
Marco Trevisan (Treviño)
19c4dce322 authPrompt: Only wiggle the entry on failures coming from the querying service
Currently whenever an authentication failure happens we wiggle the
entry, however this may not be related to the service which failed.

For example if the fingerprint authentication failed for whatever reason,
there's no point to wiggle the text input as it's something unrelated to it.

So, only apply the wiggle effect to the entry in case the failure is
coming from the querying service.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1652>
2021-02-15 16:58:50 +00:00
Marco Trevisan (Treviño)
526f0711f1 gdm: Expose the source serviceName for messages and verification failures
By giving to the AuthPrompt information regarding the source service
name (and so the ability to know whether it's a foreground service) can
give it the ability to behave differently.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1652>
2021-02-15 16:58:50 +00:00
Marco Trevisan (Treviño)
6ccd289691 gdm: Count fingerprint authentication failures in fail counter
Fingerprint PAM module can have multiple failures during a runtime
and we rely on the pam module configuration for the maximum allowed
retries.

However, while that setting should be always followed, we should never
ignore the login-screen's allowed-failures setting that can provide
a lower value.

So, once we have a fingerprint failure let's count it to increase our
internal fail counter, and when we've reached the limit we can emit a
verification-failed signal to our clients.

As per this we need also to ignore any further 'info' messages that we
could receive from the fingerprint service, as it may be configured to
handle more retries than us and they might arrive before we have
cancelled the verification session.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1652>
2021-02-15 16:58:50 +00:00
Marco Trevisan (Treviño)
1158e98913 gdm: Increase the verification failed counter once we've a failure
Decouple the verification failure count increase from
_verificationFailed as there are some cases in which we may want to
increase it without emitting a verification-failed signal.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1652>
2021-02-15 16:58:50 +00:00
Marco Trevisan (Treviño)
53db4b99b8 gdm: Always show fingerprint error messages
When the login/lock screen is shown the error messages for background
services are always ignored.

However, in case the service is the fingerprint authentication method
we still want to be able to show error messages to inform the user
about what failed, and eventually that the max retries (that may be
different from the login screen configuration) has been reached.

This handles partially the design issue [1] related to the login/lock
screen fingerprint authentication.

Eventually we want to use pam extensions to use clearer and parse-able
messages, however in the case of the fingerprint service we can be sure
that the fprint PAM module will only send errors on auth failures.

[1] https://gitlab.gnome.org/Teams/Design/os-mockups/-/issues/56

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1652>
2021-02-15 16:58:50 +00:00
Marco Trevisan (Treviño)
f7685dc224 ShellUserVerifier: Add method to check if the service name is fingerprint
We have multiple places where we check if we're handling a fingerprint
event, so let's add a common public function so that it can be used also
by the authPrompt.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1652>
2021-02-15 16:58:50 +00:00
Carlos Garnacho
863ba76675 messageTray: Drop hack to keep track of X11
This is here to cater for lost events while the pointer wanders
into untracked shell UI (thus not part of the input region under
X11). Let mutter handle this situation instead.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1556>
2021-02-14 13:57:56 +00:00
Carlos Garnacho
2799760244 windowManager: Drop sync_pointer() after relayouts
We should trust the Clutter machinery here, as it has code to trigger
focus changes triggered by relayouts.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1556>
2021-02-14 13:57:56 +00:00
Carlos Garnacho
2445212e35 messageList: Drop sync_pointer() after relayouts
We should trust the Clutter machinery here, as it has code to trigger
focus changes triggered by relayouts.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1556>
2021-02-14 13:57:56 +00:00
Carlos Garnacho
cbde13fc65 overview: Avoid sync_pointer after pop_modal()
This is only necessary for the X11 backend (as grabs triggered by other
clients leave GNOME Shell oblivious of the actual pointer position), but
is now handled inside Mutter.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1556>
2021-02-14 13:57:56 +00:00
Carlos Garnacho
0141b66d23 grabHelper: Avoid sync_pointer after pop_modal()
This is only necessary for the X11 backend (as grabs triggered by other
clients leave GNOME Shell oblivious of the actual pointer position), but
is now handled inside Mutter.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1556>
2021-02-14 13:57:56 +00:00
Carlos Garnacho
f1437506ea dnd: Avoid sync_pointer after pop_modal()
This is only necessary for the X11 backend (as grabs triggered by other
clients leave GNOME Shell oblivious of the actual pointer position), but
is now handled inside Mutter.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1556>
2021-02-14 13:57:56 +00:00
Carlos Garnacho
28f73a175c windowManager: Do not set Wacom LED state through g-s-d
This piece of machinery is going away, in favor of the own kernel's
support.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1075>
2021-02-13 15:52:55 +01:00
Lucas Werkmeister
bbf1fc28ca lookingGlass: Let history trim input
Checking whether the item is empty is now the history’s job, per the
previous two commits. The history also trims the input for us.

The effect of this is that we call _history.addItem(), and thereby move
to the end of the history, even if the input is empty (or consists only
of whitespace); clearing the input field and pressing Enter becomes a
quick way to jump back to the end of the history. (The current history
item is not overwritten if the input is empty.)

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1653>
2021-02-13 08:58:20 +00:00