We are sweeping the codebase to use startsWith
when possible. I kept this on a separate
commit due to us vendoring the library, just
to reduce some noise.
Zulip has had a small use of WebSockets (specifically, for the code
path of sending messages, via the webapp only) since ~2013. We
originally added this use of WebSockets in the hope that the latency
benefits of doing so would allow us to avoid implementing a markdown
local echo; they were not. Further, HTTP/2 may have eliminated the
latency difference we hoped to exploit by using WebSockets in any
case.
While we’d originally imagined using WebSockets for other endpoints,
there was never a good justification for moving more components to the
WebSockets system.
This WebSockets code path had a lot of downsides/complexity,
including:
* The messy hack involving constructing an emulated request object to
hook into doing Django requests.
* The `message_senders` queue processor system, which increases RAM
needs and must be provisioned independently from the rest of the
server).
* A duplicate check_send_receive_time Nagios test specific to
WebSockets.
* The requirement for users to have their firewalls/NATs allow
WebSocket connections, and a setting to disable them for networks
where WebSockets don’t work.
* Dependencies on the SockJS family of libraries, which has at times
been poorly maintained, and periodically throws random JavaScript
exceptions in our production environments without a deep enough
traceback to effectively investigate.
* A total of about 1600 lines of our code related to the feature.
* Increased load on the Tornado system, especially around a Zulip
server restart, and especially for large installations like
zulipchat.com, resulting in extra delay before messages can be sent
again.
As detailed in
https://github.com/zulip/zulip/pull/12862#issuecomment-536152397, it
appears that removing WebSockets moderately increases the time it
takes for the `send_message` API query to return from the server, but
does not significantly change the time between when a message is sent
and when it is received by clients. We don’t understand the reason
for that change (suggesting the possibility of a measurement error),
and even if it is a real change, we consider that potential small
latency regression to be acceptable.
If we later want WebSockets, we’ll likely want to just use Django
Channels.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
Bootstrap v2.2.0^2~40^2~6 changes this default to false, so this is a
prerequisite to upgrading Bootstrap, and it’s also safer.
This closes an HTML injection path via user full names in the emoji
reaction tooltip. It doesn’t appear to be exploitable for cross-site
scripting because we disallow `>` in full names, and the code happens
to be written such that the next `>` is in a different parser
invocation.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
This brings us in line, and also allows us to style these more like
unordered lists, which is visually more appealing.
On the backend, we now use the default list blockprocessor + sane list
extension of python-markdown to get proper list markup; on the
frontend, we mostly return to upstream's code as they have followed
CommonMark on this issue.
Using <ol> here necessarily removes the behaviour of not renumbering
on lists written like 3, 4, 7; hopefully users will be OK with the
change.
Fixes#12822.
Our implementation requires at least 1 space after the
'#' not not break existing linkifiers like '#123', etc.
that generally follow the convention we show in linkifier
examples.
- [valid] : # Hello
- [valid] : # Hello
- [invalid]: #Hello
For the frontend, we have taken the code from v0.7.0 of
upstream marked and made minor changes to avoid having
to refactor a significant part of our marked code.
For the backend, we merely have to change the regex to
force require spaces after #, and add hashheader to our
list of blockparsers.
Fixes#11418.
We can provide a function that returns an HTML string: `this.header()` to
display a header text above the typeahead. This can be used to provide
contextual information such as hinting about the silent mentions syntax
or the topic mentions syntax.
At the end of this commit, the HTML structure is:
$container <div>
$header <p>
info-icon
header-text
$menu <ul>
list-items
This change allows us to add custom changes to the HTML generated
by the typeahead without interfering with the core functions that
are provided by the library.
At the end of this commit, the HTML structure is:
$container <div>
$menu <ul>
list-items
We add support for triggering typeahead_completion on custom keyup events
in addition to Tab and Enter. The function `this.trigger_selection` takes
the keyup event as its argument and has the same `this` context as the other
typeahead functions.
This is being added to support partial completion of stream typeahead to
directly start the topic_list typeahead.
We add support for automatically selecting the currently highlighted
option in a typeahead without rendering the typeahead or the user
pressing 'enter'. The function `this.automated` can use available
data such as this.completing and this.token to determine if we should
automate selection or not.
This is being added to support the topic_jump mechanism.
We had several patches to spectrum, but the only essential one
(0ea770fc18) had already been fixed upstream,
and another was just handling jQuery deprecation warnings for not yet removed features.
See #12749 for details.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
We don’t need a hacked copy anymore. We run the installed version out
of node_modules in development, and a Webpack-bundled version of that
in production.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
The fix_positions argument here fixes the horizontal
position of the stream popover.
It also fixes the vertical position, both in the default case, and
also doing an appropriate adjustment for the case that the color
picker is open.
This contains a few changes by tabbott to, rather than hiding the
arrow unconditionally, only do so when it would no longer point at the
right part of the screen.
Fixes#2374.
Fixes#6059.
Fixes#7290.
The patch to bootstrap will make the position smarter, but we still
want to preserve the 100px default vertical offset we chose for visual
reasons.
Tweaked by tabbott to preserve the visual design.
We had disabled reference style links in bugdown, however,
we hadn't disabled them in marked. This commit rectifies
that and adds test cases for the same.
Fixes#11350.
The commit f863a9b567 had modified
jquery.filedrop's paste method to exit early if any of the items in the
clipboardData is of the string kind. The early exit was added to prevent pasting
an image thumbnail for text copied from software like MS Word, instead of
pasting the actual copied text content. When copying an image in a (modern?)
Browser, though, the clipboard seems to contain a html `img` tag item, along
with the actual image file. This resulted in pastes being broken.
This commit modifies the condition checked for the early exit. We now actually
look at the html content in the clipboard to see if it is an `img` tag, in which
case we upload the image, instead of exiting early.
Closes#7130.
On the backend, we extend the BlockQuoteProcessor's clean function that
just removes '>' from the start of each line to convert each mention to
have the silent mention syntax, before UserMentionPattern is invoked.
The frontend, however, has an edge case where if you are mentioned in
some message and you quote it while having mentioned yourself above
the quoted message, you wouldn't see the red highlight till we get the
final rendered message from the backend.
This is such a subtle glitch that it's likely not worth worrying about.
Fixes#8025.
These mentions look like regular mentions except they do not
trigger any notification for the person mentioned. These are
primarily to be used when you make a bot take an action and
the bot mentions you, or when you quote a message that mentions
you.
Fixes#11221.
Bootstrap's typeahead is the main part of the project that we've
forked, and moving it to its own module should help unlock our ability
to upgrade bootstrap itself.
Fixes part of #10026.
Adds additional option to typeahead:
`tabOpensEmptyTypeahead`(default: false):
tabOpensEmptyTypeahead overrides helpOnEmptyStrings.
This commit sets helpOnEmptyStrings to false and
tabOpensEmptyTypeahead to true. Now typeahead will
open on an empty string only if Tab has been pressed.
Fixes part of #10026.
NOTE: The Tab key will select option from typeahead if the typeahead
is already open i.e the same behaviour as Enter.
NOTE: This behaviour applies irrespective of search pills are enabled
or not.
We drop support for usage of `icon-vector` as base class when
including icons from font awesome icons package.
Now on, only icons as specified in font awesome v4.7.0 can be used
in the code base.
Fixes part of #10026.
Typeaheads stopped propogation of keydown and keyup events for any
key except tab and enter. If stopAdvance was true even tab and enter
were not allowed.
advanceKeyCodes option was added to typeahead which allowed to specify
key codes for which propogation of keydown and keyup events should not
stop. advanceKeyCodes does not respect the stopAdvance option.
As the backspace key code is added to advanceKeyCodes in search.js,
the backspace key deletes pill on pressing backspace if input is empty
or only consists of spaces.
YashRE42
Stefan Weil
Anders Kaseorg
Vishnu KS
Steve Howell
Rohitt Vashishtha
Thomas Ip
vinitS101
Puneeth Chaganti
Tim Abbott
Adarsh Patel
Shubham Padia
Aditya Bansal
Yashashvi Dave
Aman Ghebreweldi