With fallback mode gone, we can no longer rely on gnome-screensaver
being installed. Rather than handling three different cases (GDM,
gnome-screensaver, no lock), disable the lock functionality when
not running under GDM.
https://bugzilla.gnome.org/show_bug.cgi?id=693403
With fallback mode dropped, we can no longer rely on gnome-screensaver
to be installed, so we'll have cases where we are unable to lock the
screen. The user menu should not show the "Lock" item in this case,
but as UnlockDialog includes UserMenu, we cannot use the existing check
without creating a circular dependency; move the function to a more
generic place to fix.
https://bugzilla.gnome.org/show_bug.cgi?id=693403
We currently call the session updated handler as soon as
the session modes are read. This handler sets up keybindings
for leaving the overview (if a user session) and shows the
login dialog (if a gdm session).
We can't do the latter until the stage is mapped because it
takes a grab, and we don't need to do the former until the
user goes into the overview.
This commit defers processing session updates until the
the layout manager says start up is prepared.
It fixes a race condition at login screen startup now that
we don't show the stage right away.
https://bugzilla.gnome.org/show_bug.cgi?id=694321
This cleans up the code considerably, and makes it so that
one path creates all hot corners for all monitors. Why this
wasn't done originally, I have no clue...
The one complication is debouncing if the button and hot corner
are triggered in rapid succession, so we just move this tracking
to the overview.
https://bugzilla.gnome.org/show_bug.cgi?id=663661
Toggling the overview during the startup animation reportedly
causes stuck grab and other odd behavior.
There's no reason to handle toggling the overview during this
time anyway.
This commit defers that handling until after startup.
https://bugzilla.gnome.org/show_bug.cgi?id=694837
Implement a basic OSD popup that shows an icon and optionally a label
and a fill level. It is based on the existing OSD implementation in
gnome-settings-daemon, which it will replace.
https://bugzilla.gnome.org/show_bug.cgi?id=613543
Right now we take a still frame of the desktop before showing the
start up animation. This gives us an animation over what was
there before startup.
That's not actually desirable when restarting the shell. We don't
want to animate over undecorated windows, we really want to animate
over the noise texture.
This commit drops the still frames in favor of the noise texture.
https://bugzilla.gnome.org/show_bug.cgi?id=694326
Mutter now makes session registration an explicit required
step. This is so we can tell the session manager when
we're ready to move on to the next phase.
This commit calls the new Meta.register_with_session() api after we're
initialized.
https://bugzilla.gnome.org/show_bug.cgi?id=694876
We sometimes map the stage before we've loaded a background on it
because of a race asynchronously loading the session mode.
This manifests as the startup animating starting over a white
background.
This commit defers showing the stage until after the still frames
are loaded.
https://bugzilla.gnome.org/show_bug.cgi?id=694321
This means that windows will be positioned correctly with respect
to the panel when the shell starts up, and there won't be adjusting
after the session animation zooms in entirely.
https://bugzilla.gnome.org/show_bug.cgi?id=694227
This commit updates the code to use mutter's new background
api, and changes the shell's startup animation to be closer
to the mockups.
Based on initial work by Giovanni Campagna
https://bugzilla.gnome.org/show_bug.cgi?id=682429
Starting the startup animation when we don't have that much IO
makes it a lot more visible.
Based on a patch by Giovanni Campagna <gcampagna@src.gnome.org>
https://bugzilla.gnome.org/show_bug.cgi?id=682429
commit 92083eaf76 made
session mode loading an asynchronous operation.
Aspects of the session mode aren't known immediately at
start up. For instance, sessionMode.isGreeter returns
false for greeter sessions until the asynchronous
operation completes.
This commit defers start up processing until the session
mode is fully known.
https://bugzilla.gnome.org/show_bug.cgi?id=682429
The activities button may come and go at any moment now that we
have a dynamic panel. We need to re-check the activities button
whenever the panel is updated.
https://bugzilla.gnome.org/show_bug.cgi?id=694038
With the new flexible system in place, there's no point explicitly
hardcoding some built-in keybindings; just use the generic mechanism
for everything.
https://bugzilla.gnome.org/show_bug.cgi?id=688202
For now we just use it to assign an identifier to modal modes in
which we want to allow some keybindings, but we don't use it for
any actual filtering; we'll start doing this shortly.
https://bugzilla.gnome.org/show_bug.cgi?id=688202
We are currently using a hack to allow a select set of keybindings
in the overview. Implement the new MetaPlugin keybinding_filter
hook, which provides a cleaner way to achieve the same.
https://bugzilla.gnome.org/show_bug.cgi?id=688202
Entering the overview with the overlay key is done on key release but
exiting the overview on key press, which is inconsistent.
This change makes the overview hidden also on key release.
https://bugzilla.gnome.org/show_bug.cgi?id=683024
The screenshield requires gdm 3.5, which can be problematic in
jhbuild configurations, or distributions that don't use GDM as the display
manager. Allow transparent fallback to gnome-screensaver in that case.
https://bugzilla.gnome.org/show_bug.cgi?id=683060
Remove the PlacesManager, its search provider and all associated code.
Places search is now provided by nautilus using the external search
provider API.
https://bugzilla.gnome.org/show_bug.cgi?id=683506
As PAM messages are now shown below the password entry, there is no
need for this complexity, and we can just hide all notifications.
Also, this avoids the ambiguity between notification.showWhenLocked and
source.showInLockScreen, which have very different effects.
https://bugzilla.gnome.org/show_bug.cgi?id=683369
The stage's background color can visible on screencasts when multiple monitors
with different resolutions are in use.
Change it to from blue to grey to look better as requested by the designers.
https://bugzilla.gnome.org/show_bug.cgi?id=683514
Have main.js call .showDialog() when going back from the lock-screen, instead
of using the return value of createUnlockDialog to know if the dialog
was persistent.
_keepDialog is still used as LoginDialog cannot really be destroyed,
and cancelling it does not destroy it.
https://bugzilla.gnome.org/show_bug.cgi?id=683156
Components are pieces of the shell code that can be added/removed
at runtime, like extension, but are tied more directly to a session
mode. The session polkit agent, the network agent, autorun/automount,
are all components, keyring, recorder and telepathy client are all
now copmonents.
https://bugzilla.gnome.org/show_bug.cgi?id=683156
Since we eventually want to add a system for changing the top panel
contents depending on the current state of the shell, let's use the
"session mode" feature for this, and add a mechanism for updating the
session mode at runtime. Add support for every key besides the two
functional keys, and make all the components update automatically when the
session mode is changed. Add a new lock-screen mode, and make the lock
screen change to this when locked.
https://bugzilla.gnome.org/show_bug.cgi?id=683156
The supposed reason for launching the calendar server in a peculiar
way was so that the process would be killed when the Shell was killed,
but that didn't actually work. Launch the calendar server through auto-start,
and persist all throughout the session.
https://bugzilla.gnome.org/show_bug.cgi?id=683156
We already could build the right part of the panel declaratively according
to the session mode. Extend that to handle the left and center parts.
Also, move the mapping from the roles to the classes in panel.js, as it shared
by all modes.
https://bugzilla.gnome.org/show_bug.cgi?id=682546
Use the new OVERLAY_KEY keybinding action instead of special-casing
the overlay-key to make sure the same key will be used in- and outside
the overview.
https://bugzilla.gnome.org/show_bug.cgi?id=665547
gnome-session and gnome-settings-daemon rely on the screensaver
interface to know the locked state. Since gnome-screensaver is no
longer running, it's up to gnome-shell to provide it.
https://bugzilla.gnome.org/show_bug.cgi?id=619955
Track screen lock status in the message tray, and filter banner
notifications. The message tray is completely hidden when the screen is
locked, but exceptions can be made for individual transient notifications,
such as shell messages and the on screen keyboard.
Non transient sources are shown in the middle of the lock screen. Resident
notifications (such as those from Rhythmbox) are shown in full, while
persistent ones are displayed as icon and message count.
https://bugzilla.gnome.org/show_bug.cgi?id=619955
The design calls for the curtain to appear in the gdm greeter too.
Implement this by having the screenshield manage the login dialog
(delegating its creation to SessionMode).
https://bugzilla.gnome.org/show_bug.cgi?id=619955
We are replacing the gnome-screensaver module with with a screen shield
that is part of gnome-shell.
This patch fades out the screen on idle and shows a shield with a background
image when there is activity again. The shield can be removed with a key or
button press.
https://bugzilla.gnome.org/show_bug.cgi?id=619955
Destroyed modal actors should be completely removed from the modal
stack automatically, including leaving modality if needed.
This allows for destroying modal dialogs without calling close().
https://bugzilla.gnome.org/show_bug.cgi?id=619955
Use the ShellMountOperation dialogs we have to implement a DBus API
allowing other processes to display them.
Since GtkMountOperation now tries to call into our DBus implementation,
every application that uses a GtkMountOperation will gain integration
with our shell dialogs (but will still handle the actual communication
with GVfs).
https://bugzilla.gnome.org/show_bug.cgi?id=678516
When the shell takes control of the screen (for example to show
a modal dialog or to lock the screen), it must reestablish itself
on top of the stack, and in particular restore any unredirected
window so that it is composited below the Shell UI.
Reviewed-By: drago01 in IRC.
Initially, extensions were loaded after they shell had fully created
the session and all objects, but this didn't allow extensions easy
ways to monkey patch prototypes, as most functions had already been
bound. Remove the historical vestigal function, and just merge the
two together.
https://bugzilla.gnome.org/show_bug.cgi?id=677586
In Shell.SessionType.USER mode, two separate setup functions were
used during startup. With the new feature-based checks, the second
one is now almost empty, so move its remaining code into the first
function and remove it.
https://bugzilla.gnome.org/show_bug.cgi?id=676156
Add a sessionMode.allowKeybindingsWhenModal property, which determines
whether keybindings should still be handled while a modal dialog is
up or not.
https://bugzilla.gnome.org/show_bug.cgi?id=676156
Rather than accessing global.session_type / global.session_mode
all over the place, delegate mode information to a dedicated
sessionMode object. While not very useful for now, we will replace
checks for a particular mode with checks for particular properties
that sessionMode defines based on global.session_mode.
https://bugzilla.gnome.org/show_bug.cgi?id=676156
Pausing means that we will continue to use the same output file when
the keybinding is activated again. While useful to record a single
video in chunks, it doesn't seem to be how most users understand the
keybinding. Closing the recorder will close the file and create a new
one the next time the keybinding is pressed.
https://bugzilla.gnome.org/show_bug.cgi?id=675128
We already have one too many logging systems. Remove the errors tab
and make global.log/global.logError point to window.log/window.logError
instead.
https://bugzilla.gnome.org/show_bug.cgi?id=675104
The keybinding to toggle the screen recorder was implemented as a
signal on MetaScreen, as keybindings could only be defined in mutter
core. As this is no longer the case, we can move the binding into the
shell where it belongs.
https://bugzilla.gnome.org/show_bug.cgi?id=674377
A BindConstraint on the size of uiGroup forces full redraws of the scene.
Instead, implement and use get_preferred_width and get_preferred_height.
https://bugzilla.gnome.org/show_bug.cgi?id=670636
In the workspace-collecting code we add a check to avoid collecting a
workspace if any startup sequence is running there. Since the sequence
can take some time to load, an helper function is also added which keeps
the (empty) workspace around for a very short time, while waiting for the
sequence to start.
https://bugzilla.gnome.org/show_bug.cgi?id=664202
Some modifiers like NumLock or ScrollLock don't make sense in
keybindings, which is why we ignore them in mutter when matching
events to keybindings; for keybindings in the overview, we do
the matching ourselves, so filter the same modifiers as mutter.
https://bugzilla.gnome.org/show_bug.cgi?id=665215
The dynamic-workspaces key was introduced to allow us to opt out of
writing the num-workspaces setting (which is ignored with the dynamic
workspace management anyway), but there'll be some expectations that
the setting will have an effect on the UI.
It's actually not very hard to support, so here's to the graybeards ...
https://bugzilla.gnome.org/show_bug.cgi?id=671568
* Add a keyring prompter based on GcrSystemPrompter
* Adds dependency on gcr version 3.3.5 or higher
* Not yet using unmerged support for non-pageable memory
https://bugzilla.gnome.org/show_bug.cgi?id=652459
The correct way to make an actor having the same size as another is
a ClutterBindConstraint. Connecting to 'allocation-changed' fails because
the allocation might not change even when 'width' and 'height' properties do.
This is the case of Main.uiGroup, used as parent container for zoomed
window clones.
In lightbox.js we bind also the position because in principle it could change,
even if currently only fullscreen lightboxes are used.
Rewrite code acquiring dbus names so that it uses GDBus, and rewrite
ShellDBus so that it is exposed on the GDBus connection. Ports of
the other objects will follow.
https://bugzilla.gnome.org/show_bug.cgi?id=648651
Allow push_modal to optionally only work with a keyboard only grab and
use that in altTab as a fallback to allow switching windows while a pointer grab
is in effect (like during DND operations).
https://bugzilla.gnome.org/show_bug.cgi?id=660457
js2-mode is no longer developed and we recommend js-mode these days,
so switch the modelines to specify that, and make them consistent
across all files.
https://bugzilla.gnome.org/show_bug.cgi?id=660358
Originally the keyboard was initialized in the user-session-specific
code, but it was later moved to the generic code. Except that it was
accidentally copied rather than moved.
https://bugzilla.gnome.org/show_bug.cgi?id=659940
While we allow for arbitrary modifiers in keybindings, both the
alt-tab and ctrl-alt-tab popups close when ALT is not present in
the modifier mask, resulting in ALT being de-facto hardcoded.
Instead, pass the actual modifier mask when invoking the popups.
https://bugzilla.gnome.org/show_bug.cgi?id=645200
Users depend on being able to switch focus between the panel
and the login screen using ctrl-alt-tab.
Because the login screen has no overview, we were short circuiting
some code that needs to get run to support ctrl-alt-tab.
This commit changes the short-circuit code to only run for user
sessions.
https://bugzilla.gnome.org/show_bug.cgi?id=659177
When the keyboard is configured, make lg shorter (if necessary) to
avoid overlapping it.
Also, make a few simplifications to lg's layout code. In particular,
move it into panelBox, to simplify its interactions with the panel.
https://bugzilla.gnome.org/show_bug.cgi?id=657986
Rather than having a single chrome layer and putting all of the chrome
into that, put the chrome actors directly into uiGroup, so that they
can be stacked independently of one another relative to other actors.
(This requires making uiGroup a ShellGenericContainer, so we can use
skip_paint to avoid painting non-visibleInFullscreen chrome when we're
in fullscreen.)
https://bugzilla.gnome.org/show_bug.cgi?id=657986
This commit adds GDM session support.
It provides a user list that talks to GDM,
handles authentication via PAM, etc.
It doesn't currently support fingerprint readers
and smartcards.
https://bugzilla.gnome.org/show_bug.cgi?id=657082
The shell has a number of things that are only relevant for
logged in users (e.g. calendar events, telepathy integration, a
user menu, etc).
This commit moves those user session specific bits into their
own functions in preparation for making the shell code ready
for use at login time.
https://bugzilla.gnome.org/show_bug.cgi?id=657082
Have LayoutManager automatically deal with sizing and positioning
boxes for the panel and messageTray relative to the monitors.
Also, now that LayoutManager knows exactly where and how tall the
panel and tray are, have it manage the pointer barriers as well.
https://bugzilla.gnome.org/show_bug.cgi?id=612662
Using the new ShellNetworkAgent, show a system modal dialog
(similar to the PolicyKit one) when NetworkManager needs secrets
for connecting to wireless.
https://bugzilla.gnome.org/show_bug.cgi?id=650244
The order of indicators depends on the order of calls to
Panel.addToStatusArea. To have it consistent across enabling and
disabling of extensions, we need to place the core ones first.
https://bugzilla.gnome.org/show_bug.cgi?id=653205
LayoutManager and Chrome are already somewhat intertwined and will be
becoming more so. As a first step in merging them, move the Chrome
object into layout.js (with no other code changes).
https://bugzilla.gnome.org/show_bug.cgi?id=655813
The AutomountManager class is the low-level counterpart of the
previously introduced AutorunManager, and takes care of extracting the
list of valid mounts from a GVolume or a GDrive and mounting them,
provided a number of conditions and requirements are met.
AutomountManager also keeps track of the current session availability
(using the ConsoleKit and gnome-screensaver DBus interfaces) and
inhibits mounting if the current session is locked, or another session
is in use instead.
https://bugzilla.gnome.org/show_bug.cgi?id=653520
AutorunManager is a class that takes care of displaying and managing
notifications and UI for storage devices.
When a mount appears and a number of conditions are satisified, a
transient notification will be displayed to immediately interact with
the device. AutorunTransientDispatcher is the object that takes care of
showing/hiding the notification sources as devices appear/disappear.
Likewise, current mounts are kept in a list and presented within a
list in a resident notification, handled by AutorunResidentSource.
https://bugzilla.gnome.org/show_bug.cgi?id=653520
Remove ShellGlobal's monitor-related methods, and have
Main.layoutManager provide that information instead. Move
Main._relayout() to LayoutManager, and have other objects connect to
the layout manager's 'monitors-changed' signal to know when the screen
geometry has changed.
https://bugzilla.gnome.org/show_bug.cgi?id=636963
We call global.sync_pointer() on MetaScreen::restack as a hack to try
to fix up the hover state after a pointer grab. Previously we were
doing this in chrome.js, since there was already a ::restack handler
there anyway, but this isn't really related to the chrome at all, so
move it to main.js instead.
https://bugzilla.gnome.org/show_bug.cgi?id=633620
Using the list of stylesheets loaded with st_theme_load_stylesheet(),
one can build an StTheme that is completely identical to the previous
one, except for one property (application-stylesheet).
This allows rt and the user-theme extension to work while respecting
the theming of other extensions.
https://bugzilla.gnome.org/show_bug.cgi?id=650971
Move some more environment-initializationy stuff from main.js to
environment.js, and be more careful about not importing shell JS
modules until after the environment has been fully patched.
Change gnome-shell-plugin to call Environment.init() before
Main.start(); this means that Environment.init() now runs before any
shell JS modules (besides environment itself) have been imported.
Make run-js-test create a ShellGlobal and use its js_context, so that
the shell_global_set_property_mutable() stuff in Environment.init()
will work correctly in tests as well.
https://bugzilla.gnome.org/show_bug.cgi?id=649203
Since the hotcorner is a reactive actor, and it is over the Activities
button, hovering on it results in a leave-event for the button.
This is not noticeable when opening the overview, as the button is
correctly prelighted, but it is when closing, if you keep the mouse
near the hot corner, as the button is kept in normal state, despite
the mouse being over it.
https://bugzilla.gnome.org/show_bug.cgi?id=645751
Inside the Shell, all the UI (including chrome, the overview, and
the actual windows) is not a child of the stage but of a special
ClutterGroup, which is cloned inside the magnifier.
Add function for setting this special actor so that actors added by
St are visible in the magnifier. Nothing yet uses this, but the
tooltip will soon.
https://bugzilla.gnome.org/show_bug.cgi?id=635100
Main._nWorkspacesChanged was racing with Main._checkWorkspaces.
If _checkWorkspaces won the race, _workspaces was uninitialized.
Because of this, _checkWorkspaces only noticed workspaces
with windows on them, leading it to believe the last workspace wasn't
empty, and added a new, empty workspace.
https://bugzilla.gnome.org/show_bug.cgi?id=645343
To avoid having hot corners that accidentally trigger when e.g. trying
to hit the panel on the primary monitor we add hot corners only to
monitors that are "naturally" top left (top right for RTL).
For instance, we'd like a hot corner here:
corner -> +-------------
| |
+---------+ |
|=========| |
| | |
| | |
| | |
+---------+------------+
But not here:
unexpected hot corner
↓
+---------+-------+
|=========| |
| | |
| +-------+
+---------+
https://bugzilla.gnome.org/show_bug.cgi?id=645116
If a workspace becomes empty due to a window changing to/from the
primary monitor, but not changing its original workspace then we
were not noticing this. This can happen for instance if you drag
a thumbnail window to a non-primary window.
https://bugzilla.gnome.org/show_bug.cgi?id=609258
Move the "system notification error" handling out of
util.js, and add it to ShellGlobal so we can start
calling it from across the codebase better (including
C).
https://bugzilla.gnome.org/show_bug.cgi?id=644402
Don't enter the overview at startup, or when we we remove the
last window on the first workspace, but only when we remove a
workspace and there are windows on the other workspaces.
https://bugzilla.gnome.org/show_bug.cgi?id=644541
When closing a workspace due to the last window on that workspace
closing, switch to the overview and show the always empty workspace
rather then just going to the adjacent workspace.
Based on a patch from Adel Gadllah <adel.gadllah@gmail.com>.
https://bugzilla.gnome.org/show_bug.cgi?id=642188
Fix the "panel" icon to be symbolic. Make the overview parts only show
up when in the overview, and the non-overview parts (eg, the Desktop
window, if there is one) only show up when not in the overview. Sort
the different items consistently with their locations on the screen.
https://bugzilla.gnome.org/show_bug.cgi?id=618887
We need to do the initial relayout before we start up the startup
animation, and the startup animation can't hardcode the position
of the panel to zero.
https://bugzilla.gnome.org/show_bug.cgi?id=642881
1. disconnect destroy signals in popModal (actors can have great lifetime and then pushed again)
2. incorrect pushModal/popModal pair in overview
https://bugzilla.gnome.org/show_bug.cgi?id=64078
Currently we remove a workspace when last window on that workspace closes,
which turned out to be too agressive as some apps open either a splashscreen
or a "I have crashed last time" dialog at startup.
Try to detect such apps and give them a chance to open their "real window(s)"
on the workspace.
https://bugzilla.gnome.org/show_bug.cgi?id=642188
Unfortunately the evolution-data-server client-side libraries seem to
block the calling thread. This is a major problem as we must never
ever block the main thread (doing so causes animations to flicker
etc.). In the worst case, this problem causes login to hang (without
falling back to fall-back mode) and in the best case it slows down
login until a network connection is acquired.
Additionally, in order to sanely use these evolution-data-server
libraries, GConf has to be involved and GConf is not thread-safe. So
it's not really feasible just moving the code to a separate
thread. Therefore, move all calendar IO out of process and use a
simple (and private) D-Bus interface for the shell to communicate with
the out-of-process helper.
For simplification, remove existing in-process code since internal
interfaces have been slightly revised. This means that the shell is no
longer using any native code for drawing the calendar dropdown.
https://bugzilla.gnome.org/show_bug.cgi?id=641396
Signed-off-by: David Zeuthen <davidz@redhat.com>
See commit f2158218bef0c51 in mutter. Basically, we need
to grab org.freedesktop.Notifications before anything else
in the session gets started.
Note: I intentionally removed the Util.killall bits. I believe that
for notification-daemon at least, if we specify
DBUS_NAME_FLAG_REPLACE_EXISTING, we'll take over the name. Not sure
about notify-osd; if that's still a problem, then what we need to do
is add killing (and possibly respawning) of notify-osd to
"gnome-shell --replace", and not have it embedded randomly in a JS file.
https://bugzilla.gnome.org/show_bug.cgi?id=642666
Commit 259c84ed9a refactored out HotCorner into its own class
and added this line and a variable, but it was left behind
when the variable disappeared in commit 7cf311dac0.
Currently the panel is positioned from main.js, move that code into
a method in panel.js instead and call it from main.js, which is
consistent with what we do for the overview.
https://bugzilla.gnome.org/show_bug.cgi?id=643064
A PolicyKit Authentication Agent is a construct used to authenticate
one or more identities. See the PolicyKit documentation for more
details on authentication agents and how PolicyKit works:
http://hal.freedesktop.org/docs/polkit/
Since gjs does not support subclassing a GObject class from Javascript
code, we bring in a native class to bridge the VFuncs to GObject
signals. Additionally, this native class also queues up authentication
requests so the user of the native class only has to deal with a
single outstanding request at any one time.
The file js/ui/polkitAuthenticationAgent.js introduces a singleton
that listens for authentication requests via the native class. This
singleton uses the PolkitAgent machinery to do the actual heavy-weight
lifting required for authentication (essentially a PAM conversation).
We currently don't allow the user to pick the identity to be
authenticated.
https://bugzilla.gnome.org/show_bug.cgi?id=642886
Signed-off-by: David Zeuthen <davidz@redhat.com>
The Overview does not only hold the different elements visible in
the overview, but is also a central point to manage drag signals.
As objects which are constructed in the overview constructor cannot
access Main.overview (as its constructor has not finished yet), we
use misnamed show/hide methods to work around this limitation, which
are called when entering/leaving the overview.
A better way to handle this problem is to remove the limitation
altogether by splitting the overview constructor between internals,
which remain in the constructor, and more complex objects which
need to access Main.overview, and whose initialization is moved
to a public init() function which is called by main.js after the
overview has been constructed.
https://bugzilla.gnome.org/show_bug.cgi?id=642196
The new plans for a row of workspace thumbnails on the right side of the
overview means that the mental model we present to the user will be
vertical, so switch the Metacity workspace layout to be vertical and
adjust the keybinding handling, animations, and workspace layout in
the overview to match.
(This commit does not change the workspace switching indicator pending
finalization of what we want to do with that - it still shows workspaces
arranged vertically.)
https://bugzilla.gnome.org/show_bug.cgi?id=640996
