Commit Graph

125 Commits

Author SHA1 Message Date
Florian Müllner
ebf77748a8 cleanup: Require "dangling" commas
Since ES5, trailing commas in arrays and object literals are valid.
We generally haven't used them so far, but they are actually a good
idea, as they make additions and removals in diffs much cleaner.

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/805
2019-11-11 19:25:14 +00:00
Florian Müllner
682bd7e97c cleanup: Don't shadow variables
Having variables that share the same name in overlapping scopes is
confusing and error-prone, and is best avoided.

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/805
2019-11-11 19:25:14 +00:00
Florian Müllner
67ea424525 cleanup: Avoid unnecessary braces
Our coding style has always been to avoid braces when all blocks
are single-lines.

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/805
2019-11-11 19:25:14 +00:00
Florian Müllner
111f87a1b2 cleanup: Avoid pointless "renames" in destructuring
ES5 allows to rename variables in object destructuring, however this
only makes sense when we want to use a different name than the object
property.

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/731
2019-09-15 16:02:45 +02:00
Florian Müllner
ce92270626 extensionSystem: Add missing return value
_callExtensionInit() should return whether the extension was initialized
successfully or not, but the early return added in commit 2a9e065cfb
doesn't.

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/715
2019-09-12 12:45:05 +02:00
Jonas Dreßler
bdcf3037ca extensionSystem: Always disable multiple extensions in reverse order
Since disabling an extension will lead to disabling and re-enabling all
following extensions in the list, always disable multiple extensions by
looping through the list in reverse order.

This lowers the execution time of the event handlers quite a bit if many
extensions are installed.

Thanks to Philippe Troin for identifying the problem and proposing the
initial patch to change the extension order when reloading.

Fixes https://gitlab.gnome.org/GNOME/gnome-shell/issues/177

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/96
2019-09-12 10:24:49 +00:00
Jonas Dreßler
9698ff491a extensionSystem: Only add to extensionOrder array if enabling worked
Only push uuids of newly enabled extensions to the `_extensionOrder`
array if enabling them was successful.

Otherwise, since `_callExtensionDisable()` doesn't remove uuids that
weren't successfully enabled from the array, those extensions get added
to the array multiple times when they're disabled and enabled.

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/96
2019-09-12 10:24:49 +00:00
Jonas Dreßler
2a9e065cfb extensionSystem: Always enforce disallowing extensions using sessionMode
It's currently possible to circumvent the `sessionMode.allowExtensions`
property: For already enabled extensions one can call reloadExtension
via DBus, for new extensions it's possible by adding the extension to
the enabled-extensions gsettings key and setting the
disable-extension-version-validation key (which triggers a reload of
`this._enabledExtensions`) and then calling reloadExtension via DBus.

So to enforce `allowExtensions` while still allowing to update
extensions and keeping the extensionSystem synced with various gsettings
keys, replace the checks for `this._enabled` with simple checks for
`Main.sessionMode.allowExtensions` inside `_callExtensionInit()` and
`_callExtensionEnable()`.

The remaining checks for `this._enabled` are only small optimizations to
prevent running code on irrelevant sessionMode updates.

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/96
2019-09-12 10:24:49 +00:00
Jonas Dreßler
4c93ef39fa extensionSystem: Handle added or removed sessionMode extensions
Right now we're only handling added sessionMode extensions correctly on
sessionMode updates, also handle the other case and disable removed
sessionMode extensions on sessionMode updates.

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/96
2019-09-12 10:24:49 +00:00
Jonas Dreßler
22107c183b extensionSystem: Rename initted to initialized
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/96
2019-09-12 10:24:49 +00:00
Jonas Dreßler
c06eb5d0a7 extensionSystem: Log an extension error if loading the stylesheet failed
Instead of only logging a message that loading the extension stylesheet
failed and silently returning we should use `logExtensionError` for that
instead. This also sets the extension state to ERROR and makes sure we
don't try to enable it again.

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/96
2019-09-12 10:24:49 +00:00
Jonas Dreßler
e76877c4b8 extensionSystem: Check if extension exists before accessing property
If the extension doesn't exist in the `this._extensions` Map, we'd try
to access `extension.dir` on undefined/null. So set the `dir` variable
after checking if `extension` is defined.

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/96
2019-09-12 10:24:49 +00:00
Jonas Dreßler
2a32fb2e72 extensionSystem: Fix a wrong error message
The extension object is added to the `this._extensions` Map inside
`createExtensionObject`, not inside `loadExtension`.

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/96
2019-09-12 10:24:49 +00:00
Jonas Dreßler
de86920e0e extensionSystem: Remove unncessary return statements
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/96
2019-09-12 10:24:49 +00:00
Marco Trevisan (Treviño)
8a7e44ccf0 extensionSystem: Use logError to record extension errors with stack trace
Extensions might emit JS errors explicitly or implicitly, however GNOME
Shell doesn't present any stack trace for those making them quite hard
to debug.

Make this easier by logging errors with logError() whichs includes the
stack dump.

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/700
2019-09-09 19:28:19 +00:00
Florian Müllner
e357559582 cleanup: Mark globals used from other modules as exported
eslint cannot figure out that those symbols are used from other modules
via imports, so they trigger unused-variable errors. To fix, explicitly
mark those symbols as exported.

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/627
2019-07-24 00:28:45 +02:00
Florian Müllner
71759a0769 cleanup: Mark unused (but useful) variables as ignored
While we aren't using those destructured variables, they are still useful
to document the meaning of those elements. We don't want eslint to keep
warning about them though, so mark them accordingly.

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/627
2019-07-24 00:28:45 +02:00
Didier Roche
ce1bee727a extensionSystem: Allow disabling session mode extensions
Trying to disable an extension that is enabled by the session mode
currently has no effect, which is clearly confusing. We could update
the various extension UIs to reflect that via sensitivity, but being
unable to configure extensions based on which session the user picked
at login isn't obvious either.

So instead, add a 'disabled-extensions' gsettings key to list extensions
that should not be enabled which takes precedence over 'enabled-extensions'
and can be used to disable session mode extensions.

https://bugzilla.gnome.org/show_bug.cgi?id=789852
2019-07-20 14:17:35 +00:00
Florian Müllner
43cb3754d9 extensionSystem: Store extensions in a Map
After making the extensions map private to the ExtensionManager, we can
switch it to a proper hash table which is more appropriate.

https://bugzilla.gnome.org/show_bug.cgi?id=789852
2019-07-20 14:17:35 +00:00
Florian Müllner
1d6ddf060b extensionSystem: Move extension loading into ExtensionManager
Now that extension loading and the extensions map are no longer shared
between the gnome-shell and gnome-shell-extension-prefs processes, we
can move both into the ExtensionManager which makes much more sense
conceptually.

https://bugzilla.gnome.org/show_bug.cgi?id=789852
2019-07-20 14:17:35 +00:00
Didier Roche
4a3476266f extensionSystem: Add canChange property to extensions
Whether or not an extension can be enabled/disabled depends on various
factors: Whether the extension is in error state, whether user extensions
are disabled and whether the underlying GSettings keys are writable.

This is complex enough to share the logic, so add it to the extension
properties that are exposed over D-Bus.

https://bugzilla.gnome.org/show_bug.cgi?id=789852
2019-07-20 14:17:35 +00:00
Florian Müllner
32e0b895a4 shellDBus: Add new 'ExtensionStateChanged' signal
The existing 'ExtensionStatusChanged' signal has a fixed set of parameters,
which means we cannot add additional state without an API break.  Deprecate
it in favor of a new 'ExtensionStateChanged' signal which addresses this
issue by taking the full serialized extension as parameter.

https://bugzilla.gnome.org/show_bug.cgi?id=789852
2019-07-20 14:17:35 +00:00
Didier Roche
4589da957b extensionSystem: Add methods to enable/disable extensions
Extensions are currently enabled or disabled by directly changing the
list in the 'enabled-extensions' GSettings key. As we will soon add
an overriding 'disabled-extensions' key as well, it makes sense to
offer explicit API for enabling/disabling to avoid duplicating the
logic.

For the corresponding D-Bus API, the methods were even mentioned in
the GSettings schema, albeit unimplemented until now.

https://bugzilla.gnome.org/show_bug.cgi?id=789852
2019-07-20 14:17:35 +00:00
Florian Müllner
6a4c55b852 extensionSystem: Make methods to call extension functions private
While public methods to enable/disable extensions make sense for an
extension manager, the existing ones are only used internally. Make
them private and rename them, so that we can re-use the current
names for more useful public methods.

https://bugzilla.gnome.org/show_bug.cgi?id=789852
2019-07-20 14:17:35 +00:00
Florian Müllner
ea17740719 extensionSystem: Turn into a class
The extension system started out as a set of simple functions, but
gained more state later, and even some hacks to emit signals without
having an object to emit them on.

There is no good reason for that weirdness, so rather than imitating an
object, wrap the existing system into a real ExtensionManager object.

https://bugzilla.gnome.org/show_bug.cgi?id=789852
2019-07-20 14:17:35 +00:00
Florian Müllner
d82810240f extensionUtils: Move ExtensionState definition here
It makes sense to keep extension-related enums in the same module instead
of spreading them between ExtensionSystem and ExtensionUtils.

More importantly, this will make the type available to the extensions-prefs
tool (which runs in a different process and therefore only has access to
a limited set of modules).

https://bugzilla.gnome.org/show_bug.cgi?id=789852
2019-07-20 14:17:35 +00:00
Florian Müllner
0d035a4e53 cleanup: Prefer template strings
Template strings are much nicer than string concatenation, so use
them where possible; this excludes translatable strings and any
strings containing '/' (until we can depend on gettext >= 0.20[0]).

[0] https://savannah.gnu.org/bugs/?50920

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/612
2019-07-05 11:32:31 +00:00
Florian Müllner
f250643385 style: Use space after catch
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
2019-07-01 23:44:11 +02:00
Florian Müllner
e2e02c9a2f cleanup: Avoid implicit coercion
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
2019-07-01 23:44:11 +02:00
Florian Müllner
f6b4b96737 cleanup: Use Array.includes() to check for element existence
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
2019-07-01 21:28:52 +00:00
Florian Müllner
fd50b9a45e cleanup: Use destructuring for imports from GI
This is *much* nicer than repetitive "imports.gi" lines ...

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/399
2019-02-09 07:39:20 +01:00
Florian Müllner
a1534dab02 cleanup: Clean up unused imports
Spotted by eslint.

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/399
2019-02-09 05:05:07 +01:00
Florian Müllner
2fc1f1adbe cleanup: Remove obsolete Lang imports
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/350
2019-01-22 21:33:46 +00:00
Marco Trevisan (Treviño)
72f5802be9 extensionSystem: Unset stylesheet file reference when unloaded
We must remove the GFile reference from the representing object when an
extension has been unloaded as this won't be used anymore later (e.g. as cached
ref).
2018-09-03 23:29:01 +00:00
Marco Trevisan (Treviño)
3aea290adc extensionSystem: Unload stylesheet if extension is not loaded
We should not keep any reference to an extension custom stylesheet in case we
got an error while enabling that
2018-09-03 23:29:01 +00:00
Marco Trevisan (Treviño)
5b3ff7184e extensionSystem: Don't load an extension with invalid stylesheet
We currently assign the stylesheet to an extension whenever the file exists,
regardless of whether it actually loaded successfully or not.
And thus we load an extension that ships a stylesheet even if that file can't
be used.

There is no point in trying to load an extension if its stylesheet wasn't
loaded in the first place, so make sure this happens only on success.

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/188
2018-09-03 23:29:01 +00:00
Florian Müllner
3b1330880f cleanup: Use Function.prototype.bind()
When not using arrow notation with anonymous functions, we use Lang.bind()
to bind `this` to named callbacks. However since ES5, this functionality
is already provided by Function.prototype.bind() - in fact, Lang.bind()
itself uses it when no extra arguments are specified. Just use the built-in
function directly where possible, and use arrow notation in the few places
where we pass additional arguments.

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/23
2018-02-21 13:55:02 +00:00
Florian Müllner
213e38c2ef cleanup: Use arrow notation for anonymous functions
Arrow notation is great, use it consistently through-out the code base
to bind `this` to anonymous functions, replacing the more overbose
Lang.bind(this, function() {}).

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/23
2018-02-21 13:55:00 +00:00
Florian Müllner
033277b68f Define externally accessible contants with 'var' instead of 'const'
Just as we did with classes, define other constants that are (or
may be) used from other modules with 'var' to cut down on warnings.

https://bugzilla.gnome.org/show_bug.cgi?id=785084
2017-07-18 21:52:06 +02:00
Florian Müllner
e845f4105a extensionSystem: Handle all initExtension() extension errors
The method currently catches errors that occur when calling the
extension's init() method, but throws itself an error if the
expected extension.js file is missing. The former is pointless
if we expect all callers to handle errors themselves anyway, and
we should avoid the latter if we don't - opt for the second option
and handle a missing extension.js file gracefully.

https://bugzilla.gnome.org/show_bug.cgi?id=781728
2017-07-17 13:03:19 +02:00
Florian Müllner
d461d02cdc extensionSystem: Catch import errors
While we catch errors that occur when calling init(), enable() or
disable(), the import itself can throw an exception, for instance
if the extension imports an unavailable typelib or tries to draw
in a conflicting library.

https://bugzilla.gnome.org/show_bug.cgi?id=781728
2017-07-17 13:00:00 +02:00
Florian Müllner
88b1a5d3a0 extensions: Consistently handle createExtensionObject() errors
The method may throw an error, for example when metadata.json is
missing or cannot be parsed, however we are currently not always
handling it.

https://bugzilla.gnome.org/show_bug.cgi?id=781728
2017-07-17 13:00:00 +02:00
Florian Müllner
8d6efde091 Revert "extensionSystem: handle reloading broken extensions"
Both reloadExtensions() and enableExtensions() are already expected
to catch extension errors. If they don't, this is the bug that
should be fixed instead of catching unhandled exceptions in the
caller.

This reverts commit ff425d1db7.

https://bugzilla.gnome.org/show_bug.cgi?id=781728
2017-07-17 13:00:00 +02:00
Emilio Pozuelo Monfort
ff425d1db7 extensionSystem: handle reloading broken extensions
Some extensions out there may fail to reload. When that happens,
we need to catch any exceptions so that we don't leave things in
a broken state that could lead to leaving extensions enabled in
the screen shield.

https://bugzilla.gnome.org/show_bug.cgi?id=781728
2017-04-25 17:47:08 +02:00
Florian Müllner
7395aaf9b4 extensionSystem: Add kill-switch setting to disable user extensions
When gnome-shell fails to start on login, gnome-session tries to
re-launch it again with all extensions disabled. This is currently
implemented by clearing the list of enabled extensions, which means
the user needs to re-enable their extensions manually again.
To make this process less annoying, add a single 'kill-switch' setting
gnome-session can use without interfering with the user setting.

https://bugzilla.gnome.org/show_bug.cgi?id=778664
2017-02-15 23:20:14 +01:00
Florian Müllner
a36686a6aa extensionSystem: Fix updating extension list on session update
Before reenabling all extensions, we update the list of enabled extensions
to catch any changes that happened while extensions were enabled. However
this is currently broken as onEnabledExtensionsChanged() is a nop while
disabled, so just call getEnabledExtensions() directly.
2015-12-16 23:50:42 +01:00
Cosimo Cecchi
642bf2b778 theme: convert stylesheet loading to GFile
In preparation to making it a GResource.

https://bugzilla.gnome.org/show_bug.cgi?id=736936
2014-10-14 18:54:00 -07:00
Florian Müllner
4d64bbcf7d extensionSystem: Fix reloading on version-validation changes
The current code only works for enabled extensions, which means
that extensions that were marked OUT_OF_DATE cannot be enabled
without a restart when disabling the version check.
Fix this by reloading all extensions while making sure to only
enable any extensions when we're supposed to.

https://bugzilla.gnome.org/show_bug.cgi?id=736185
2014-09-06 22:06:07 +02:00
Adel Gadllah
1af40b1345 extensionSystem: Add a gsettings key to disable version validation
Add a key 'disable-extension-version-validation' key that disables
the validation of extension's claimed to be supported shell version
with the shell version and just load all extensions unconditionally.

https://bugzilla.gnome.org/show_bug.cgi?id=724683
2014-02-19 17:07:38 +01:00
Jasper St. Pierre
da4238ec68 Synchronize shell startup
The asynchronous nature of extension loading, session loading, and more,
makes the code racy as to what is initialized first, and hard to debug.
Additionally, since gjs is single-threaded, the only code we're running
in a thread anyway is readdir, which is going to be I/O bound, so the
code here is actually likely to be faster.

Drop this in favor of some good old fashioned synchronous loading.
2013-11-04 11:50:20 -05:00