We store the relevant data to hide/show a topic in the row itself,
and use jquery to hide/show it on filter change.
This also fixes search breaking the set filters.
This fixes the bug that message was undefined since we used to store
locally echoed message id and were not updating it after new message
id for the same message was received from the server.
We reuse the existing logic for displaying and updating stream color
from the stream left sidebar.
Tests fixtures were extracted and updated for this commit.
The approach that supposed to use this data was not implemented
and hence this data will no longer be used.
If this feature is implemented in future,
this data will still not be used since we would depend upon
starred_messages.js library to provide us the required information.
* Add action to mute topics.
* We don't need to store muted data per topic as previously planned.
* Moved launch topic test to the top so that they run on non-modified
data.
* Show an empty overlay of recent topics.
* Register click event to open recent topics.
* Launch recent topics on "t" keypress.
This is based on the draft overlay.
This was previously hardcoded with agreement between the Zulip backend
and frontend as 86400 seconds (1 day). Now, it's still hardcoded in
the backend, but arranged in a way where we could add a setting
without any changes to the mobile and terminal apps to update logic.
Fixes#15278.
In the past, the anchor message has always been the same as the
pointer, but we're about to change that as part of removing the
pointer entirely.
Using the anchor is logically what we meant, anyway, since we always
want to select a message that's actually within the range we just
fetched.
This was implemented in 2012 to avoid showing a loading indicator for
fetching messages for users with no message history. However, the
Zulip onboarding UI always creates some message history, and fetching
history is fast, so this is likely clutter more than a useful
optimization.
The activity.process_loaded_messages code path was called when these
tests were originally written in f8e0137. We stopped calling that
code path in 43e5b2d (#15118). This assert test code is no longer
relevant; tested by adding console.log in the function. I came
across this when working on removing activity from the window.
If typeahead is used, this adds comma separated search queries
so that multiple search pills don't get combined as one and the
search behaviour remains same as search_pills_enabled = False case.
If typeahead is not used, this prevent the typing of a single comma
after the pill gets created.
Now node_tests/search.js and node_tests/search_legacy.js have
almost identical test besides the search pills related data
processing work.
This is possible since we no longer depend on the values stored
in the input pills and can narrow or search for term based on
the `#search_query` box value.
This was done in commit 02ab48a61e.
This commit removes the 'get_active_user_for_email' function
from people.js. We have removed the use of this function
in the previous commits, which changed the functions using
'get_active_user_for_email' to use user_ids instead of emails.
This commit changes the would_receive_message to use user_id
instead of emails.
This change is done because user_ids are immutable and using
user_ids is the correct way of uniquely identifying user.
The change in 'would_receive_message' also leads to change
in util.is_pm_recipient to use a string of user_ids instead
of emails.
We also know that user_ids passed to 'would_receive_message'
are active user_ids, since we get them from buddy_list.
So we don't need to check whether the user is active, which
was previously being checked by get_active_user_for_email.
This commit changes the needs_subscribe_warning function to
use user_id instead of emails.
This change is done because user_ids are immutable and using
user_ids is the correct way to uniquely identify a user.
We already know that user_ids being passed in this function are
active user_ids, since they come from typeaheads.
So, we only need to call 'people.get_by_user_id', to get the user
object from user_id and do not need to check the active status of
user, which was done previously using 'get_active_user_for_email'.
This commit changes the compose_invite_users template to use
data-user-id as property intead of data-useremail.
This is changed to maintain consistency with other parts of the
code where user_ids are used for referring to users.
This also helps in removing some of the checks for the case of
undefined emails.
We now send user_ids to the backend API for subscribing/unsubscribing
users to a stream instead of emails.
This change is done now because we have just migrated the backend API to
support sending user_ids in 2187c84, so it wasn't possible before.
This change is helpful because sending user_ids is more robust, as those
are an immutable reference to a user, rather than something that can
change with time.
The get_active_humans and get_non_active_humans functions used
to return a list of user objects. The get_active_humans is used
on settings_users.js and settings_bots.js, and in both places the
only attributes needed of the person object are the user_id and
full_name.
To make the function return smaller, instead of a list of active
humans, we are returning a list of active human ids, saving memory.
With the ids we can call the people API to get the full_name attribute.
This reimplements our Zoom video call integration to use an OAuth
application. In addition to providing a cleaner setup experience,
especially on zulipchat.com where the server administrators can have
done the app registration already, it also fixes the limitation of the
previous integration that it could only have one call active at a time
when set up with typical Zoom API keys.
Fixes#11672.
Co-authored-by: Marco Burstein <marco@marco.how>
Co-authored-by: Tim Abbott <tabbott@zulipchat.com>
Signed-off-by: Anders Kaseorg <andersk@mit.edu>
This commit fixes the bug for subscribing the user from mention
warning which was introduced in e52b544.
This is fixed by changing email to be passed as list to
'invite_user_to_stream'.
The reason for this change is that, this is where `Filter` and
actual tracking of what messages are contiguous lives. This
will be beneficial when we will to move to a model where we
cache `MessageListData` objects for a large number of views.
This commit changes the person dict in event sent by do_change_user_role
to send role instead of is_admin or is_guest.
This makes things much more straightforward for our upcoming primary
owners feature.
Restored old behavior accidentally removed in
1ae07b93d8 (diff-e353fab8bea58b8746ec68c83aa39b36L48)
The server only remembers the most recent presence status update per
device. Meaning that, for instance, if the user only uses one client and
that client's last status update was IDLE, then the server only knows
that, doesn't know anything about the user's last ACTIVE time. Thus the
"active_timestamp" the server will serve about this user to the webapp
will be "undefined".
The old behavior was that for the sake of the "Last active: x ago"
status in buddy list popover, the latest status timestamp was used,
whether IDLE or ACTIVE.
The change linked about changed that to only pay attention to
ACTIVE. Thus, if the server doesn't remember any ACTIVE statuses, webapp
would show "Last active: More than 2 weeks ago", which was incorrect.
We restore the old behavior and further improvements can be made on top
of this.
Previously, we had to fiddle with the generated HTML to update
individual values. Now, we can simply ask the widget to rerender
the row that we updated.
This is done by passing an html_selector function that returns
a selector for the rendered item.
If:
- we do not provide html_selector function
- item is not currently rendered
- new html is not a string.
then the render_item() call is a noop.
We remove the "GROUP PMs" section that used
to be in the lower right sidebar.
Most of this is straightforward code removal.
A couple quick notes:
- The message fetching code now just
calls `huddle_data.process_loaded_messages`,
which we still need for search suggestions.
We removed `activity.process_loaded_messages`.
- The `huddle_data.process_loaded_messages`
function no longer needs to return `need_resize`.
- In `resize.js` we now just calculate
`res.buddy_list_wrapper_max_height` directly
from `usable_height`.
We had a bunch of places where we
were calling `resize.resize_bottom_whitespace`
with no arguments, which has been a no-op
since the below commit that removed support
for our `autoscroll_forever` option:
fa44d2ea69
With the `autoscroll_forever` options things
like opening/closing the compose box could
alter how much bottom whitespace you'd want,
but we stopped supporting that feature in
2017.
Since then bottom_whitespace has just always
been 40% of the viewport size. So we only need
to change it on actual resize events.
It's worth noting that we still call
`resize_bottom_whitespace` indirectly in many
places, via `resize_page_components`, and
the latter actually causes
`resize_bottom_whitespace` to do real work,
but that work is redundant for most of those
codepaths, since they're not triggered by
changes to the viewport. So there are other
opportunities for cleanup.
This is mostly just moving code from the `activity.js`
tests, but I also now explicitly cover the "100%"
use case (i.e. all four folks in the huddle are present).
Computed indexes into these raw objects should be guarded with
Object.prototype.hasOwnProperty; make our accessors do this
automatically and use them consistently.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
This is helpful because if the user pastes multiple queries in the
searchbox and there are invalid search operators, then it is visible
through the typeahead.
The main reasoning for this change is as follows:
* When the search bar contains multiple search queries
but no search results, the last search operand does
not get displayed.
This happens due to the fact that filter object
contained 2 terms having the operator key value as
"search" instead of a single term where operator is
"search" and operand is a single string containing
the space seperated search queries. This condition
occurs for search_pills_enabled case only because
we used to Filter.parse the query twice
(once for the `base_operators` and once for the
`suggestion_operator instead of doing both at once).
Thus the `search_query` value inside the
`narrow.show_search_query` function which only
selected the operands of the first term displayed
an incomplete result.
* Another benefit of this commit is to display the narrow
operators in the URL fragment the same way as when
search_pills_enabled = False.
For example, On entering the queries in the mentioned
order -> 'is: starred', 'abc', 'def', 'is: private',
'ghi'. This is the URL:
Previously:
/#narrow/is/starred/is/private/search/abc.20def/search/ghi
Now (same as pills disabled case):
/#narrow/is/starred/is/private/search/abc.20def.20ghi
* We are also able to de-duplicate the non-typeahead search
query code path.
The people.js tests were using _add_user function to add
cross realm bots. The problem is that _add_user function
doesn't properly simulates the adding process as it doesn't
add the user in cross_realm_dict as well.
To solve this and eliminate the need of calling
people.initialize(), which means the params obj needs to be
defined, we extracted the whole logic of adding a cross realm
user into a separete function, add_cross_realm_user.
This makes it so that search_suggestion.js
does not depend on activity.js.
That dependency hasn't really been "elegant"
for quite some time, but it will become particularly
unnecessary when we go to remove the "Group PMs"
section from the right sidebar.
This commit introduces a temporary wart
where we have these two functions with the
same name in a sort of unnecessarily
complicated code stack:
activity.process_loaded_messages
huddle_data.process_loaded_messages
But we will eliminate the former function
very soon, and our message-related codepaths
will just call the `huddle_data` version
directly.
TESTING NOTES:
Now that `huddle_data` is a tiny leaf
module, it's super easy to just use the
real implementation of what was formerly
called `activity.get_huddles()` (and is
now in `huddle_data`).
When I first wrote this commit, introducing
the real implementation of `get_huddles` exposed
some bugs that I fixed in the immediately
prior commits to this.
When the tests were originally written,
I believe `activity.js` had some annoying
`jQuery` dependencies that made it hard
to unit test against. We've slimmed it over
time to be mostly just a "controller" module.
But even in its current state it would have
been a bit of a bloated dependency.
The other friction for using the actual
version of `get_huddles` was setting up
the message data, but that's pretty minor.
If you have a group PM where some users have
three-digit user_ids and some with four-digit
user_ids (or similar), a huddle could effectively
be ignored when determining the order of
search search suggestions.
Basically, we need a way to canonically sort
user_ids in "huddle" strings, and it's somewhat
arbitrary whether you sort lexically or sort
numerically, but you do need to be consistent
about it.
And JS is not exactly helpful here:
> [99, 101].sort()
[ 101, 99 ]
This is a pretty obscure bug with pretty low
user-facing consequences, and it was never
reported to us as far as I know, but the fix
here is pretty straightforward.
We have had similar bugs of slightly more consequence
in the past. The reason this bug has shown
up multiple times in our codebase is that every
component that deals with huddles has slightly
different forces that determine how it wants
to serialize the huddle. It's just one of those
annoying things. Plus, bugs with group PMs
do tend to escape detection, since most people
spend most of their time either on streams
or in 1:1 PMs.
This is a pure code extraction. The current
code is buggy with respect to user_ids with
different lengths of digits, i.e. it does
a naive lexical sort instead of a numerical
sort. We'll fix that in the next commit.
We already have a loading indicator for fetching older
messages. Thus it makes sense to implement the same
for displaying newer messages.
We set the display of `bottom-messages-logo` to none,
to prevent displaying two loading indicators during
the initial message load.
Fixes#15060.
I consolidate most of our users toward the top
of the file, so that we don't have to clutter
up individual tests. This also avoids some
confusion where charles/maria got repeated
in different tests with different ids.
I also introduce a couple four-digit ids to
try to expose more bugs related to sorting.
Note that it's still easy to keep tests
isolated here, as we have always been able
to cheaply re-initialize `people.js` and then
add individual users back.
There are still some tests where it makes
sense to just declare users locally, especially
if we are mutating their data.
There are a few minor incidental cleanups here,
mostly involving replacing hard coded ids
with things like `maria.user_id`.
This creates a little bit of noise in some
tests where we don't care about users, but
it's worth avoiding confusion about which
users exist at which time. Also the noisy
aspects here may actually catch regressions.
Finally, if the noise gets annoying, we can
do things like rename "Ted" not to collide
with the "Test" stream.
Using "bob" as the current user was a bad
choice, as our convention is to use "me" or
"myself" or "alice" for the current user.
It also particularly complicated the tests
around Group PMs.
Now we have both "bob" and "myself", which
makes the intentions of the tests a little
more clear.
This commit adds code to live update the message edit history.
Message edit history is fetched and rendered again if the edit
history modal is open.
This also adds 'data-message-id' attribute to 'message-history'
when opening history modal element which is used for checking
whether the history modal opened is of the message which is
edited.
Fixes#15051.
This code generates the timestamp string to be shown to the user
from the given timestamp in unix format using moment.js.
We also render the timestamp in a pill.
Previously, we handled this code only in message_list_view.js.
Now we support rendering stream descriptions and some dynamic
elements can be rendered in them, so we extract this new module
and use it in both the places.
This adds support for syntax like: !time(Jun 7 2017, 6:30 PM) so that
everyone sees the time in their own local timezone. This can be used
when scheduling online meetings, etc.
This adds some hardcoded values for timezones, because of there
being no sureshot way of determining the timezone easily. However,
since the main way of using the feature should be a typeahead for
entering the time, this shouldn't be cause of much concern.
Fixes#5176.
We wrap the [reset] anchor tag in a button so that we can set 'disabled'
attribute on it. We change the styles to hide the [reset] button and the
pencil icon when the widget is disabled.
We also need to call `e.preventDefault()` in the event handler since now
the anchor tag behaves as a button.
Add methods to extract recent topics from received messages.
Process new messages as they are received.
Use new messages received from the server to extract recent_topics.
Node tests added.
Previously, we tried to read the value from page_params, which was just
a hack to make the calling code look cleaner. We now remove that hack
and thus, our dependency on page_params existing. Now, if the caller
does not specify a default value, we'll use the null-value.
This also creates a new init() function to cleanly wrap the code that
makes changes to the opts passed to the widget.
JSON.parse behaves as we want for numbers but for strings, we would
throw an error like 'unexpected token at position 0'. This meant we
couldn't read back the value set by `$input.data('val', 'text')`.
We had removed this function from the codebase when we switched to
using dropdown_list_widget. This was accidentally left as it is when
making that change.
Previously, we handled these updates in server_events_dispatch
and could accidentally call widget.render() before initializing
the widget.
Original report: https://chat.zulip.org/#narrow/near/875608.
The sync_realm_settings function ensures that if the settings are
not open, any updates are a noop.
When a user changes its avatar image, the user's avatar in popovers
wasn't being correctly updated, because of browser caching of the
avatar image. We added a version on the request to get the image in
the same format we use elsewhere, so the browser knows when to use the
cached image or to make a new request to the server.
Edited by Tim to preserve/fix sort orders in some tests, and update
zulip_feature_level.
Fixes: #14290
* Remove old topic and reprocess both old and new topic to ensure
that we are correctly storing the last_msg_id of users in the
topic. Also, Handle topic's stream (& topic) edit updates.
* Add function to get all messages in a topic in message_utils.js.
* Send topic edit event to recent_senders.
* Add func get sorted list of recent_senders to topic.
The function will be useful to handle topic edits in Recent Topic UI.
We no longer use `/json/users` in the codepath
for bot settings (admin side).
We also specifically don't load human users when
we load bots, so you no longer have to pay for
the server round trip as a side effect of loading
bots. Instead, there is a dedicated `set_up_bots`
entry point.
We also get the bot ids directly from `bot_data` now.
This commit, to some degree, builds on the prior commit
that had us hydrate data from `people.js` instead
of the payload from `/json/users`.
We want to move toward having list consumers
pass us in a list of ids that we hydrate later
in the process. This should help live-update
scenarios. The next commit will describe the
benefits in a bit more detail, using the
concrete example of our bot settings table
in the org settings.
A slightly longer-term goal here is to be
able to ask `list_render` to re-render a particular
id, and this moves us closer to that. But even
before that, this change should eliminate a class
of bugs dealing with stale data, such as when
you manually patch a list (with direct jQuery
hacks) but then later go to sort/filter the rows.
We will now re-hydrate the items in those scenarios.
For the below payloads we want `owner_id` instead
of `owner`, which we should deprecate. (The
`owner` field is actually an email, which is
not a stable key.)
page_params.realm_bots
realm_bot/add
realm_bot/update
IMPORTANT NOTE: Some of the data served in
these payloads is cached with the key
`bot_dicts_in_realm_cache_key`.
For page_params, we get the new field
via `get_owned_bot_dicts`.
For realm_bot/add, we modified
`created_bot_event`.
For realm_bot/update, we modified
`do_change_bot_owner`.
On the JS side, we no longer
look up the bot's owner directly in
`server_events_dispatch` when we get
a realm_bot/update event. Instead, we
delegate that job to `bot_data.js`.
I modified the tests accordingly.
The prior version of "me" confusingly had the same
user_id as one of our bots, so I fixed that.
I also avoid using a test email of 'owner@zulip.com',
which is confusing for earlier tests where I haven't
established "me" as the actual owner of any bots.
Since production testing of `message_retention_days` is finished, we can
enable this feature in the organization settings page. We already had this
setting in frontend but it was bit rotten and not rendered in templates.
Here we replaced our past text-input based setting with a
dropdown-with-text-input setting approach which is more consistent with our
existing UI.
Along with frontend changes, we also incorporated a backend change to
handle making retention period forever. This change introduces a new
convertor `to_positive_or_allowed_int` which only allows positive integers
and an allowed value for settings like `message_retention_days` which can
be a positive integer or has the value `Realm.RETAIN_MESSAGE_FOREVER` when
we change the setting to retain message forever.
This change made `to_not_negative_int_or_none` redundant so removed it as
well.
Fixes: #14854
This adds a way to keep track of max_message_id of a
stream and fetch it using the method get_max_message_id().
This will be useful for sorting streams by most recent
activity which will be implemented in the upcoming commit.
Essentially rewritten by tabbott to have a coherent tracking system,
and provide documentation.
Part of #10794.
When switching from Private Messages narrow to
All messages narrow, stream list max-height was not
correctly updated. Stream list max-height was calculated
before new height were updated by browser for
All message narrow.
Inshort:
Stream list max-height was being updated before the browser could
render height for `#global_filters`. Calling resize after narrow
completes removes this issue.
This exists in all versions of the desktop app that we still support,
and will eventually let us delete a bit of annoying compatibility code
from the desktop app’s injected JavaScript.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
Previously, the message and event APIs represented the user differently
for the same reaction data. To make this more consistent, I added a
user_id field to the reaction dict for both messages and events. I
updated the front end to use the user_id field rather than the user
dict. Lastly, I updated front end and back end tests that used user
info.
I primarily tested this by running my local Zulip build and
adding/removing reactions from messages.
Fixes#12049.
In passing, we also get coverage for
list_render.get.
This test also implicitly demonstrates that
you can call `widget.sort` directly from some
external event handler; in other words, you
are not locked into the widget's conventions
for setting up <th> tags.
The check here was too late, and it should
have given a blueslip error. We obviously
don't expect these errors at runtime; this
is a convenience for developers creating
new widgets.
This covers how we wire up the filter, and it
covers using `filterer` instead of `predicate`.
I also go away from the strange length-based
predicate that I had in the original test.
The intention behind the original test was
to show that filters could be more than simple
string-matching, but that was just a strange
way to demonstrate it.
This commit:
- Switches margin for padding on the search closed icon, to ensure we
cover the region to the right of icon as clickable area.
- Applies the click handler that initiates the search to the second
last element of the navbar:
- This will most commonly be the narrow_description element, but may
also be the entire navbar eg in the case of "ALL" or "starred".
Applying this change to user names in "group-pm-with: ..." based
narrows is a little questionable, but there are no other triggers
on these names so this change makes sense for now.
- The narrow_description may also contain links, which need to be
handled correctly so that the behave like links should. We work
around the onClick on the narrow_description, by applying a
handler to <a> tags and invoking stopPropagation.
- We also add CSS to change the cursor to a pointer to make the
search icon change color on hover over the clickable area to
indicate that the search box can be opened with a single click.
- However, since <a> tags are handled differently, we add a hover
listener which makes sure it behaves appropriately. We also increase
the vertical padding of the <a> tags so they cover the entire
vertical navbar region.
We shouldn't add redundant data to page_params. Since we already have
page_params.realm_notifications_stream_id, we can use that value instead
of creating page_params.notifications_stream.
We, however, still need the name of the notifications stream to render
it in templates. Thus we create stream_data.get_notifications_stream().
This commit removes most of the duplicate logic for the stream selection
dropdowns for the settings: `realm_signup_notifications_stream_id` and
`realm_notifications_stream_id`.
We also make minot changes to DropdownListWidget to accomodate the stream
rendering of the format: `#stream_name`.
We finally switch to using stream_ids instead of stream_name everywhere
which makes reading data from page_params simpler.
'get_active_message_people` function is added which returns active
users who have sent the messages that are currently showing up in
the feed.
typeahead fetches the users from 'get_active_message_people` instead
of `get_message_people` and thus shows only active users in the
mention typeahead and excludes deactivated users.
Fixes#14310
This commit makes it so that inline (recipient bar) topic edits follow
a different path from full message row edits in `message_edit.js`.
This commit:
- deletes `.save()` endpoint and replaces all calls to it with
`.save_message_row_edit()` and `.save_inline_topic_edit()`
- deletes `.end()` endpoint and replaces all calls to it with calls to
either ".end_message_row_edit()" and ".end_inline_topic_edit()".
Some extraneous zrequires were added in
3bc818b9f7
This is not a huge deal, but it makes it
appear as if data modules are dependent
on things that they don't really care
about. The tests should provide a bit
of signal on how "deep" an object's
dependencies go.
The set_up_muted_topics_ui and templates have been
refactored to use list_render.
This is done to support filtering and sorting of
the muted stream topics.
This also includes the addition of a new Date muted header.
The div containing options for filtering streams was placed in the
centre. Aligned it towards the right. Had to pass a special check
variable in subs.js:540 to add the specific class for this purpose.
This was a specific scenario where this sort of CSS was to be added,
hence had to make a specific case.
Also, fixed the bottom border color of the search streams bar for night
mode.
Previously, we would always pick up the stream and topic name from
compose_state. This would work for message edits as well when the
composebox was open.
Now, if we are in a message edit, we get the stream and topic of the
message being edited before falling back on trying to populate using
the composebox state.
Fixes#14545.
This commit changes the code to show user according to emails based
on email_address_visibilty_values and the type of user.
1. email_address_visibility = admins,members and guests
Typeaheads are shown according to original emails.
2. email_address_visibility = admins only
Typeaheads are shown according to original email to admins which
were previously shown according to system-generated email of
form "user10@zulipdev.com".
For non-admins, typeaheads are not shown according to emails as
they are not visible in the typeahead itself to non-admins.
3. email_address_visibility = nobody
Typeaheads are not shown according to emails for all type of users.
This commit moves the get_visible_email function to people.js
as this function will be used in other places and people.js seems
relevant file for this.
Tests are added to get full coverage.
We change the user facing interface to allow specifying expected
number of error messages (default=1). Now an average test can look
like:
```
// We expect 3 error messages;
blueslip.expect('error', 'an error message', 3);
throwError();
throwError();
throwError();
blueslip.reset();
```
This change adds a toggle widget to the "add streams" page that
lets the user change the sort order of the streams list. So far,
this supports sorting by stream name, by number of subscribers,
or by estimated weekly traffic.
Some uploads can be rejected in the frontend, like when the file
size is too big, without sending the file to the server. Remove the
'Uploading file...' message from the compose box in such cases.
Now, the system uses word='' and an editing=True for rendering an
form for addition of alert words. This is a very vulnerable
way to implement said feature and this commit fixes that.
The addition form has been moved to alert_word_settings.hbs
thereby rendering it only once but always. Now, we do not have
to manually add an empty word and editing for the form to be
rendered.
As part of refactoring, the editing parameter has also been
removed as there is no purpose left.
This updates the logged-in top navbar to display the stream/message
name, number of users, and description. It also replaces the search
bar with a search icon that expands into a full-width search bar.
Co-authored-by: Max Nussenbaum <max@maxnuss.com>
Fixes: #164.
Fixes: #5198.
In ee0d4541b4, we renamed the topic_date
-> stream_topic_history, and in the process renamed some local object
properties from .name => .topic_name, and accidentally change the
type for the data from the server as well.
The test fixtures were incorrectly migrated in the same way, so we fix
that as well.
`stream_topic_history` is a more appropriate name as this
module will contain information about last message of a
stream in upcoming commits. Function and variable names
are changed accordingly like:
* topic_history() -> per_stream_history()
* get_recent_names() -> get_recent_topic_names()
* name -> topic_name
If a file cannot be added for upload because of restrictions in frontend
we call cancelAll immediately in 'info-visible' callback. This would
prevent files that are already added to be cancelled but does not cancel
files that are yet to be added. So we use break to prevent any more files
from being added.