Adds an implementation of nm-applet in javascript. Uses the new
introspection from NetworkManager, and temporarily requires
nm-applet to be running for the secret service.
Features a renewed interface, with each device controllable through
a switch, which if toggled off disconnects, and if toggled on
connects to the most recently used valid connection. More esoteric
features like creation of ad-hoc networks have been moved to the
control center panel.
https://bugzilla.gnome.org/show_bug.cgi?id=621707
Do a basic job of converting font sizes from pixels to points, so they
will scale will the global GNOME scale factor. Some other sizes that are
clearly related to the font sizes are changed to ems, but no comprehensive
attempt is made to get rid of px units.
https://bugzilla.gnome.org/show_bug.cgi?id=636868
During application startup, we used to display a rotating spinner
which also moved from left to right, revealing the application title.
The result looks rather busy, so remove the horizontal movement.
https://bugzilla.gnome.org/show_bug.cgi?id=640782
The mockups are here
https://live.gnome.org/GnomeShell/Design/Whiteboards/AuthorizationDialog
Detailed changes
- Don't use an icon for root
- For root, show Administrator in red
- Nuke icons for info and error messages
- Make error messages yellow
- Use 10pt size for error and message labels, not 12px
- Don't make the dialog change size when (single-line) error/info
messages appear
- Spacing fixes
- Show "Sorry, that didn't work. Please try again" if authentication fails
- Don't cancel the PolkitAgentSession if the session has already completed
https://bugzilla.gnome.org/show_bug.cgi?id=644737
Signed-off-by: David Zeuthen <davidz@redhat.com>
In the mockups the slider does not have an uniform color but uses
one color (shade of blue) to indicate the current value and one
to indicate "the rest" (shade of grey).
So adjust the slider to look like that to be closer to the look
in the mockups and thus to the design.
https://bugzilla.gnome.org/show_bug.cgi?id=644600
Add Ctrl-Alt-Tab support to ViewTab, and fix the Applications pane to
scroll to track the keyboard focus.
The Windows pane can be switched to, but navigation within the pane is
not yet implemented.
https://bugzilla.gnome.org/show_bug.cgi?id=618887
Adjust the style of the search display to match current mockups:
- add a border to search buttons
- increase padding and spacing
- remove section background and border
- decrease font size in section headers
https://bugzilla.gnome.org/show_bug.cgi?id=643632
Increase the icon size of search results for consistency with the
application view. To account for the larger icons, only display
a single row of results per section.
https://bugzilla.gnome.org/show_bug.cgi?id=643632
gs-applications was introduced because we initially wanted a limited set
of categories, but this has now changed and we're back to categories
similar to the ones in the applications.menu from gnome-menus.
We can fix gnome-menus to have better categories, if needed.
https://bugzilla.gnome.org/show_bug.cgi?id=641148
Commit 9a048af1f changed the panel border to be drawn below the
background - as a result, the app menu's icon now overlaps the
panel border. As it looks cleaner to leave the border in place,
clip the icon to the panel border.
In the mockups the bottom border of active panel buttons is drawn
on top of the panel's border. To get this effect, move the panel
border into the background, so that it is not subtracted from the
vertical space given to the buttons. Adjust the drawing of the rounded
corners to reflect that change.
https://bugzilla.gnome.org/show_bug.cgi?id=643001
Now that we are using Cantarell as the default UI font, some clarity
was reduced in using the calendar. Mockups already address this so
change the font styles in CSS to match the mockups.
https://bugzilla.gnome.org/show_bug.cgi?id=642194
The minimize and maximize buttons on the titlebar have lost much of their
utility in GNOME 3: the minimize functionality is largely superceded by
the ability to switch windows in the overview and conveniently use
multiple workspaces, while the maximize functionality is available by
drag to the top gesture or double clicking on the title bar.
Removing these buttons significantly cleans up the default appearance
and avoids exposing a half-done implementation of minimization.
http://mail.gnome.org/archives/gnome-shell-list/2011-February/msg00192.htmlhttps://bugzilla.gnome.org/show_bug.cgi?id=604237
This is special menu item that can alternate
between two choices when you hit the alt key.
It will be useful for getting a hybrid
suspend/power off menu item.
https://bugzilla.gnome.org/show_bug.cgi?id=636680
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>
Make the right padding bigger and the left padding smaller, so that the
boundaries that trigger the accordion effect are more closely associated
with corresponding icons. Also slightly decrease the overall padding between
sources.
So far transitions do not work for the custom drawn corners, so to
avoid a visible glitch when transitioning a button in the panel corner
while updating the style of the apparently attached corner instantly,
remove transition of those panel buttons until we make it work for the
custom drawn parts as well.
https://bugzilla.gnome.org/show_bug.cgi?id=642697
Current mockups show the panel curving downwards at the edges to
frame the work area and look awesome. Implement those as separate
actors to not affect the struts set by the panel, and synchronize
their state with the corresponding panel buttons so they blend in
with the panel. It might be worth considering whether the corners
should be hidden with maximized windows on the current workspace,
though this might affect the illusion of them being part of the
panel. As the corners don't affect the input region, the small
overlap with windows might not be too bad after all.
https://bugzilla.gnome.org/show_bug.cgi?id=642697
The groups at the panel sides use different left/right padding, so
a slightly different CSS is required for RTL locales. Add :rtl
pseudo classes as necessary and adjust the CSS.
https://bugzilla.gnome.org/show_bug.cgi?id=642697
We now use a border image on active panel buttons to underline the
button's content. As the property does not affect the content's
allocation, the app icon ends up being drawn on top of the border
image. To prevent this, use a custom property to clip the bottom of
the app icon when the button is active.
https://bugzilla.gnome.org/show_bug.cgi?id=642697
Update the style of the panel to match the latest mockups.
- add a subtle border at the bottom of the panel
- use a highlight of active panel buttons similar to the one
used for running applications in the dash/app view
- shadow the buttons' label/icon when highlighted
https://bugzilla.gnome.org/show_bug.cgi?id=642697
This starts saving lookingGlass history in gsettings, and also adds
the ability to clear the text field by pressing 'down' on the last
entry, like the run dialog and readline allow.
https://bugzilla.gnome.org/show_bug.cgi?id=642237
As the dash uses different widths and radii for left and right
borders, we need to use different CSS when it is positioned at
the right of the screen.
https://bugzilla.gnome.org/show_bug.cgi?id=642721
When we animating the scale for the thumbnails, the border and
background should wrap around the current size of the thumbails.
The technique that we are using to animate the scale breaks that
since we don't animate the overall size of the thumbnails box -
we just animate our child actors within the allocation.
To fix this, switch from drawing the background by packing in another
container to drawing the background with a separate actor that
is under the other actors and allocated by our custom logic.
https://bugzilla.gnome.org/show_bug.cgi?id=641881
We will change the workspace thumbnail size as we get more thumbnails; it doesn't
really make sense to always show 1/5 of the thumbnails how big or small they are,
so instead show a CSS-configurable length.
https://bugzilla.gnome.org/show_bug.cgi?id=641879
Using "background" for the hover state overwrites the "background-image"
property of running apps. Use "background-color" in hover instead, so
the background image is kept during hover. Apply the same fix to the
selection indicator for search results.
- 1px border rather than 2
- less padding around launchers
- icon prelight was too bright, bring it down a notch
Based on an original patch by Jakub Steiner.
https://bugzilla.gnome.org/show_bug.cgi?id=636156
Clutter containers only take their children's size into account, but
not their scale. As we want the dash to change its size smoothly
when zooming items in/out, we wrap each item in a custom container
which does consider the child's scale.
https://bugzilla.gnome.org/show_bug.cgi?id=636156
With workspaces now being stacked vertically, the horizontal
indicators in the workspace switcher are rather odd. There are
some designs for an improved workspace switch animation, but
it may take a while to implement them, so for now just change
the orientation of the existing switcher.
https://bugzilla.gnome.org/show_bug.cgi?id=641931
With automatic workspace management, explicit controls to add and
remove workspaces are no longer necessary. We also can remove the
use of addWorkspace for middle-button-click on a launcher since
launching on the last empty workspace will do the right thing.
https://bugzilla.gnome.org/show_bug.cgi?id=640996
Add workspace thumbnails to the workspace controls area. The user can
click on the thumbnail to switch workspaces and can also drag windows
out of the thumbnail to other workspaces.
https://bugzilla.gnome.org/show_bug.cgi?id=640996
For historical reasons, we had both StClickable and StButton, which
were nearly identical. StButton was more widely-used, so keep that and
port all StClickable users to that.
https://bugzilla.gnome.org/show_bug.cgi?id=640583
When commit 961fdd861f landed
text in the overview search entry field started getting clipped.
This is because the default font size changed but the entry is a
hard coded pixel height.
This commit drops the hard coding, so the entry can automatically
size itself to the proper height.
https://bugzilla.gnome.org/show_bug.cgi?id=641537
With the current rule set, we exclude applications in the "Core"
category - this includes Nautilus, which we want to show up at
least until "Finding and Reminding" is implemented, so remove
the exclude rule for now.
Currently, "-st-shadow" can mean one of three very
different things:
1) shadow based on alpha of the background image
2) shadow the "border box" of the node
3) shadow applied to the content of a StIcon
It isn't well defined which of the above 3 cases
-st-shadow will mean for any given node, however.
This commit splits the property into three
different properties, "box-shadow",
"-st-background-image-shadow", and "icon-shadow"
to make it all very explicit.
https://bugzilla.gnome.org/show_bug.cgi?id=636976
The vp8 codec provides better performance in pretty much all cases compared
to theora while still being free (as in not patent encumbered).
Also add a %T placeholder to the pipeline string which will be replaced
with the a thread count based on the target system.
https://bugzilla.gnome.org/show_bug.cgi?id=632595
- specify an overall font-family for all children of the stage and
for places where we just want to use a size, use font-size.
- also shrink the humongous 16px panel and menu size to a reasonable 14.
- scale up the icons to be 16px by default again
Based on a patch by Jakub Steiner <jimmac@gmail.com>
https://bugzilla.gnome.org/show_bug.cgi?id=634226
GenericDisplay used to provide a common base class for places and
recent items, none of which exists anymore. As of current mockups,
display items in "Finding and Reminding" should be based on
BaseIcon / IconGrid instead.
Now that we have a modalDialog base class in gnome-shell,
it makes sense to use it for the run dialog.
Note, the run dialog doesn't currently have buttons, so
it isn't exercising all the API of the base class.
https://bugzilla.gnome.org/show_bug.cgi?id=637187
This is a base class to make it easier to
gain a consistent look for system modal dialogs.
It handles creating a darkened backdrop behind the dialog, setting
up buttons in the dialog, keynav, etc.
https://bugzilla.gnome.org/show_bug.cgi?id=637187
Previously this was inheriting the default size, which is specified in
pts, and so would make the text larger than its 16px containing box if
you have high DPI.
https://bugzilla.gnome.org/show_bug.cgi?id=639213
A key for 12hr/24hr clock format has been added to gsettings-desktop-schemas,
so use that instead of the one from the shell clock schema.
As the setting can be controlled from the Date and Time panel of
gnome-control-center now, drop the temporary preference dialog
as well.
https://bugzilla.gnome.org/show_bug.cgi?id=633200
This makes it consistent with other parts of the UI and will let the
a11y code use the rule "has_style_pseudo_class('selected') =>
ATK_STATE_SELECTED"
https://bugzilla.gnome.org/show_bug.cgi?id=637830
Instead of showing submenus on the left side, make PopupSubMenuMenuItem
act like an expander. The sub menu is toggled on click, opened on
right/enter/space on the parent item, closed on left on any item
or when closing the parent menu.
https://bugzilla.gnome.org/show_bug.cgi?id=633476
We were forcing the chat-response entry to have too small a height,
making underscores not show up. We're already setting the font size,
so we should just let the entry request the height it needs based on
that.
https://bugzilla.gnome.org/show_bug.cgi?id=635471
Show a positional indicator where a new favorite will be added and
make the favorites re-orderable. Also allow the removal of favorites
using drag-and-drop according to the mockups.
https://bugzilla.gnome.org/show_bug.cgi?id=634948
Current mockups display all search results as icons as used by
application results, so change the default result display to use
iconGrid/BaseIcon. Remove the custom application results display,
as it is no longer needed.
https://bugzilla.gnome.org/show_bug.cgi?id=634948
Add the view selector and adjust the positioning of elements in the
overview. Unlike the old dash, the view selector is made public to
indicate that extensions may add additional views or search providers.
https://bugzilla.gnome.org/show_bug.cgi?id=634948
As workspaces will appear as a particular view in the view selector,
merge WorkspacesControls and WorkspacesManager to control workspaces
and related controls, so that a single actor can be added to the
selector instead of positioning the elements from the overview.
https://bugzilla.gnome.org/show_bug.cgi?id=634948
The new layout does no longer support view switching, so merge
GenericWorkspacesView and SingleView, and remove MosaicView.
Also rename or remove workspace properties and functions which
are now unused.
The grid will have a comeback with the new DND behavior.
https://bugzilla.gnome.org/show_bug.cgi?id=634948
Being no longer an independent menu pane, both the toggle() and
close() functions are no longer needed, and the view's structure
can be simplified a bit.
Also update the style to fit into the view selector.
https://bugzilla.gnome.org/show_bug.cgi?id=634948
The view selector is a tabbed interface with a search entry. Starting
a search switches focus to the results' tab, ending a search moves the
focus back to the previously selected tab. Activating a normal tab
while a search is active cancels the search.
https://bugzilla.gnome.org/show_bug.cgi?id=634948
With the new layout, search results will be displayed in an independent
view like window previews, applications and possible future additions;
it does not make much sense keeping it with the switching logic, so move
the code to its own file.
Also remove the dash-prefix from the relevant style classes.
https://bugzilla.gnome.org/show_bug.cgi?id=634948
The new dash implementation is a single-column vertical sidebar,
whose items are scaled dynamically to fit the available height.
If the height is still exceeded after scaling down to a minimum
item size, excess items are cut off.
The now unused old dash implementation is renamed to OldDash, as
its code will be used as a base for the new view selector element.
https://bugzilla.gnome.org/show_bug.cgi?id=634948
As the button to add workspaces will move to the same position as
the new workspace drop area in drag mode, the latter is redundant
and can be removed.
https://bugzilla.gnome.org/show_bug.cgi?id=634948
Overlaying inactive workspaces with a gradient to fade out the actors
does no longer work when re-using the normal desktop background. If
we keep the current DND behavior, we probably want to implement a real
fade effect - for now, just remove the visually disruptive shadows.
https://bugzilla.gnome.org/show_bug.cgi?id=634948
While scaling the desktop background with the window previews represents
workspaces quite intuitively, the approach is not without problems.
As window previews in the overview behave quite differently to "real"
windows, the representation of workspaces as miniature versions of
"real" workspaces is flawed. The scaling also makes the transitions
to and from the overview much more visually expensive, without adding
much benefit.
Leaving the background in place provides more visual stability to the
transitions and emphasizes the distinctive behavior of elements in the
overview.
https://bugzilla.gnome.org/show_bug.cgi?id=634948
The layout of recent mockups occupies the space previously reserved
for the info bar with the view selector. As the bar's purpose is
mainly to provide the user with feedback, it makes sense to use the
existing message tray facility instead of moving the bar elsewhere.
https://bugzilla.gnome.org/show_bug.cgi?id=634948
The scrollbar is the main culprit for cluttered controls in the
linear view - all its functionality is already provided by the
workspace indicators, so it is save to remove the scrollbar in
order to clean up the interface.
https://bugzilla.gnome.org/show_bug.cgi?id=634948
When the last message is older than SCROLLBACK_IMMEDIATE_TIME (1
minutes), show a timestamp in the middle, indicating the time it
was sent.
Use the same style for presence changes, but show them on the left.
https://bugzilla.gnome.org/show_bug.cgi?id=617228
Switch from St.TextureCache.load_named_icon() to using St.Icon for named
icons. Along with the advantage of getting colorization right for symbolic
icons, this allows moving some icon sizes into the CSS.
In the CSS, the system status icon size is changed to be 1em (=16px for the
default font size), at the request of the artists. See bug 613448.
https://bugzilla.gnome.org/show_bug.cgi?id=633865
Adding a "PopupMenuRadioButtonItem" wouldn't work well, because we'll
need radio-button indicators on multiple different styles of menu
item. Also, the current design draws the indicator in the menu item's
padding, so it's sort of special anyway. So just add support at the
BaseMenuItem level.
Also, redo the menu/menuitem padding so that all the horizontal
padding is in the menu item, or else the indicator dot will show up in
the wrong spot.
https://bugzilla.gnome.org/show_bug.cgi?id=631193
When there are menu items with right-aligned items, all the
right-aligned items should appear to the right of all the left-aligned
items.
Clutter doesn't have an equivalent of GtkSizeGroup, so hack something up
using ShellGenericContainer and some javascript.
https://bugzilla.gnome.org/show_bug.cgi?id=631193
Shell implemented indicators got padding from default button style,
and also spacing from their container, so too much space was left
between them. This only became apparent when more than one was
implemented, though.
Redo the way that the summary item expand/collapse animation works so
that the items all resize in unison so that when moving from one to
another, the summary area as a whole stays a constant width rather
than wobbling slightly.
(Also rename all references to the "minimum" summary item title width,
since it's not a minimum, it's just the width.)
https://bugzilla.gnome.org/show_bug.cgi?id=630546
Introduce Cairo-drawn sliders to be used in PopupMenus (for example for
volume). They are stylable to some extent (colors, border width, slider
height) and have the standard behaviour of a slider, except they are
completely modal (once you start dragging, all events are intercepted by
the slider, which thus is kept active and highlighted at all times).
They show numeric values between 0 and 1 (scaling must be performed outside)
and emit value-changed on button release, but no activate, keeping the
menu open.
https://bugzilla.gnome.org/show_bug.cgi?id=625029
All mockups now use a representation for documents/places similar to
the one used for applications. Rename AppIcon to BaseIcon and move its
code together with WellGrid out of appDisplay to stress their general
usefulness.
https://bugzilla.gnome.org/show_bug.cgi?id=625887
Extend WellGrid with an optional rowLimit parameter and an accessor
function for the grid's items, then use it to replace the custom
container used to display the application search results.
Also adjust the spacing of the search results slightly to make it
consistent with the app well.
https://bugzilla.gnome.org/show_bug.cgi?id=622446
The shader currently forces GLSL 1.0 to avoid being incompatible with older hardware but is still using features not available in 1.0.
Strict compilers fail to compile the shader:
error C7506: OpenGL/ES does not define the global variable gl_TexCoord
As every hardware/driver that supports 1.0 also supports 1.10 bumping the version to fix it is safe.
https://bugzilla.gnome.org/show_bug.cgi?id=629343
Override the new mutter preference /apps/mutter/general/attach_modal_dialogs
to attach modal dialogs to their parent window. Animate the modal dialogs
expanding from the top of the parent window. Slowly dim the parent window
after the dialog comes up.
https://bugzilla.gnome.org/show_bug.cgi?id=612726
This patch ensures the following notifications behavior:
- Urgent notifications that have long title or banner text are auto-expanded
correctly.
- Single-line notifications that have _expandNotification() called (e.g.
because the user mouses over to them), are treated as expanded, which means
they get fully expanded if they are updated with more content and the user
can escape them.
- The position of expanded notifications is updated when they are updated.
- Notification banner is shown again on the first line if it can fully fit
there after a notification is updated, even if it was previously hidden
because the notification was expanded and the old banner did not fully fit.
- New notifications are immediately hidden if the user mouses away from them.
- If a new notification is updated while it is shown, we extend the time it
will be shown.
- If a new notification is updated while it is hiding, we stop hiding it and
show it again.
- If a summary notification is updated while it is hiding, we let it finish
hiding and show a new notification with the updated information.
Implementation details:
- Single-line notifications now have 4px bottom padding instead of 8px, which
means that their height matches the tray height, they are fully shown in the
banner mode, and don't pop out by 4px when the notification is expanded.
- Notification keeps a flag that indicates whether it is expanded, updates
its expanded look when it is updated, and emits an 'expanded' signal
indicating that its layout has possibly changed. The message tray connects
to this 'expanded' signal when it is showing a notification in the expanded
state and updates the position of the notification accordingly when this
signal is received so that the notification is fully shown. This is better
than connecting to 'notify::height' signal on the notification bin, since
it results in fewer callbacks.
https://bugzilla.gnome.org/show_bug.cgi?id=617209
The Shell is the only user of the magnifier, so there's no
reason to keep using GConf for its settings. Since it's a
session-wide tool, use a distinct schema,
org.gnome.accessibility.magnifier, stored in
/desktop/gnome/accessibility/magnifier just like before.
Put these settings in a separate schema file for clarity.
Old enums in GConf were stored as integers, we now use the
facilities provided by GSettings to save them as strings,
and convert them to integers automatically thanks to the
mapping stored in the schemas. Remove hard-coded default values,
which we can get from the schemas.
https://bugzilla.gnome.org/show_bug.cgi?id=622414
The space between the rightmost item and the edge of the screen should
be considered part of the rightmost item, and the space between items
should be considered part of the adjacent items, to prevent excess
jitter when moving between them.
https://bugzilla.gnome.org/show_bug.cgi?id=626112
Adds class PopupSwitchMenuItem, which is a two-state switch similar
to those in system status indicators mockups. Also adds class Switch,
which represents the switch itself, in case it is useful somewhere
else.
https://bugzilla.gnome.org/show_bug.cgi?id=621880
The following changes make message tray look more polished:
- all notifications are now same width (no min and max width)
- there is an equal padding all around the notification (which resulted in
the increased tray height)
- action buttons are now nicely styled
- chat text box glows when focused (nevermind the unfocused look because
we'll soon always have it focused when it is showing)
- chat text has padding on the left and rounded background
- summary source buttons no longer have a border
https://bugzilla.gnome.org/show_bug.cgi?id=624584
"text-align" allows setting the alignment of text, with respect to
other lines and allocated space, without requiring a reference to
the ClutterText (which is private for most widgets).
If not specified, all text is left-aligned.
https://bugzilla.gnome.org/show_bug.cgi?id=622447
This is part of the design update for the message tray.
Source now takes an extra argument called 'title'.
All expanded message tray items are same width, which is determined by
the width of the item with the longest title, up to MAX_SOURCE_TITLE_WIDTH.
This is done so that items don't move around too much when one is expanded
and another one is collapsed.
https://bugzilla.gnome.org/show_bug.cgi?id=617224
There is currently no way of launching the desktop-wide help other
then running yelp explicitly from the run dialog or a terminal. It
should instead be included with the rest of applications.
https://bugzilla.gnome.org/show_bug.cgi?id=622458
Removing the prerequisites from the gschemas.compiled rule broke
the build, as this is what triggers the generation of the actual
schema files expected by the rule's command.
Instead of just restoring the former dependencies, make sure that
the schema is validated before compilation, not after.
https://bugzilla.gnome.org/show_bug.cgi?id=622050
Use GSettings for all Shell configuration. GConf is kept to read
configuration from external programs (Metacity, Nautilus and Magnifier),
but ShellGConf is removed because it's mostly useless for the few calls
we still have. Also get rid of unused GConf code in ShellAppSystem.
A basic GConf schema is still used to override Metacity defaults and
configure Magnifier in a system-wide fashion. GConf is also used as
GSettings backend via the GSETTINGS_BACKEND environment variable.
All of this will be removed when these programs have been ported
to GSettings and able to use dconf.
GLib 2.25.9 is required. Schemas are converted to the new XML format,
and compiled at build time in data/ so that the Shell can be run from
the source tree. This also requires setting the GSETTINGS_SCHEMA_DIR
environment variable both when running installed or from source tree,
in src/gnome-shell.in and src/gnome-shell-clock-preferences.in.
https://bugzilla.gnome.org/show_bug.cgi?id=617917
The shell design says that upon launching an application,
no X window should have focus, and we should display an
animated launching indicator.
Implement this by in panel.js, keep track of the last started
application. If there isn't currently an X focus, show an animation
for the last starting application.
https://bugzilla.gnome.org/show_bug.cgi?id=598349
Currently the workspaceSwitcher does not take the screen size into account
which could result into overflowing the screen.
Fix that but using Shell.GenericContainer instead of St.BoxLayout which takes
the monitor size into account when allocating.
https://bugzilla.gnome.org/show_bug.cgi?id=620404
