The complexity of the situation is that we don't want to load faker into production by default but fabricators and styleguide are available on production.
This is made possible through app/assets/javascripts/discourse/app/lib/load-faker.js which contains a function to ensure faker is loaded asynchronously (loadFaker) and another function to access the loaded faker (getLoadedFaker).
Note 1: this commit also refactors fabricators to have access to context and use faker where possible
Note 2: this commit moves automation to admin bundle
---------
Co-authored-by: David Taylor <david@taylorhq.com>
Some of the properties, like 'categoriesById', 'parentCategory' and
'subcategories', were updated manually when categories were loaded.
This was not ideal because it required a lot of code to keep the
objects in sync and some of the properties were not updated correctly.
Prior to this change we would pre-load all the user channels which making initial page load slower. This change will make them be loaded right after initial load. In the past this was not possible as the channels would have to be loaded on each page transition. However since about a year, we made the channels to be cached on the frontend and no other request will be needed.
I have decided for now to not show a loading state in the sidebar as I think it would be noise, but we can reconsider this later.
Note given we don't have the channels loaded at first certain things where harder to accomplish. The biggest UX change of this commit is that we removed all the complex logic of computing the best channel to display when you load /chat. We will now store the id of the last channel you visited and will use this id to decide which channel to show.
**TL;DR:** Refactor autocomplete to use async markdown parsing for code block detection.
Previously, the `inCodeBlock` function in `discourse/app/lib/utilities.js` used regular expressions to determine if a given position in the text was inside a code block. This approach had some limitations and could lead to incorrect behavior in certain edge cases.
This commit refactors `inCodeBlock` to use a more robust algorithm that leverages Discourse's markdown parsing library.
The new approach works as follows:
1. Check if the text contains any code block markers using a regular expression.
If not, return `false` since the cursor can't be in a code block.
1. If potential code blocks exist, find a unique marker character that doesn't appear in the text.
1. Insert the unique marker character into the text at the cursor position.
1. Parse the modified text using Discourse's markdown parser, which converts the markdown into a tree of tokens.
1. Traverse the token tree to find the token that contains the unique marker character.
1. Check if the token's type is one of the types representing code blocks ("code_inline", "code_block", or "fence").
If so, return `true`, indicating that the cursor is inside a code block.
Otherwise, return `false`.
This algorithm provides a more accurate way to determine the cursor's position in relation to code blocks, accounting for the various ways code blocks can be represented in markdown.
To accommodate this change, the autocomplete `triggerRule` option is now an async function.
The autocomplete logic in `composer-editor.js`, `d-editor.js`, and `hashtag-autocomplete.js` has been updated to handle the async nature of `inCodeBlock`.
Additionally, many of the tests have been refactored to handle async behavior. The test helpers now simulate typing and autocomplete selection in a more realistic, step-by-step manner. This should make the tests more robust and reflective of real-world usage.
This is a significant refactor that touches multiple parts of the codebase, but it should lead to more accurate and reliable autocomplete behavior, especially when dealing with code blocks in the editor.
> Written by an 🤖 LLM. Edited by a 🧑💻 human.
- The thread preview is now a regular link and can be right clicked
- left gutter date, and regular date of a thread message will not correctly link to the thread's message
This commit includes several changes to make hashtags work when "lazy
load categories" is enabled. The previous hashtag implementation use the
category colors CSS variables, but these are not defined when the site
setting is enabled because categories are no longer preloaded.
This commit implements two fundamental changes:
1. load colors together with the other hashtag information
2. load cooked hashtag data asynchronously
The first change is implemented by adding "colors" to the HashtagItem
model. It is a list because two colors are returned for subcategories:
the color of the parent category and subcategory.
The second change is implemented on the server-side in a new route
/hashtags/by-ids and on the client side by loading previously unseen
hashtags, generating the CSS on the fly and injecting it into the page.
There have been minimal changes outside of these two fundamental ones,
but a refactoring will be coming soon to reuse as much of the code
and maybe favor use of `style` rather than injecting CSS into the page,
which can lead to page rerenders and indefinite grow of the styles.
This commit creates a shared implementation of the dates computation and moves all the logic (new messages since last visit and dates separator into one single component <ChatMessageSeparator />).
The frontend tests have been removed and only a single system spec has been added for threads as everything is sharing the same implementation and the existing channel specs should catch any regression.
This new navbar component is used for every navbar in chat, full page or drawer, and any screen.
This commit also uses this opportunity to correctly decouple drawer-routes from full page routes. This will avoid having this kind of properties in components: `@includeHeader={{false}}`. The header is now defined in the parent template using a navbar. Each route has now its own template wrapped in a div of the name of the route, eg: `<div class="c-routes-threads">..</div>`.
The navbar API:
```gjs
<Navbar as |navbar|>
<navbar.BackButton />
<navbar.Title @title="Foo" />
<navbar.ChannelTitle @channel={{@channel}} />
<navbar.Actions as |action|>
<action.CloseThreadButton />
</navbar.Actions>
</navbar>
```
The full list of components is listed in `plugins/chat/assets/javascripts/discourse/components/navbar/index.gjs` and `plugins/chat/assets/javascripts/discourse/components/navbar/actions.gjs`.
Visually the header is not changing much, only in drawer mode the background has been removed.
This commit also introduces a `<List />` component to facilitate rendering lists in chat plugin.
This commit adds a new "My threads" link in sidebar and drawer. This link will open the "/chat/threads" page which contains all threads where the current user is a member. It's ordered by activity (unread and then last message created).
Moreover, the threads list of a channel page is now showing every threads of a channel, and not just the ones where you are a member.
This consistently fails on core now, see
https://github.com/discourse/discourse/actions/runs/7109919490/job/19355591619?pr=24738
Error: QUnit Test Failure: Browser Id 2 - Discourse Chat | Component | chat message collapser images: escapes link
not ok 444 Chrome 120.0 - [58 ms] - Browser Id 2 - Discourse Chat | Component | chat message collapser images: escapes link
---
actual: >
false
expected: >
true
stack: >
Expected value is %3Cscript%3Esomeeviltitle%3C/script%3E and actual value is
<script>someeviltitle</script>
This commit implements drafts for threads by adding a new `thread_id` column to `chat_drafts` table. This column is used to create draft keys on the frontend which are a compound key of the channel and the thread. If the draft is only for the channel, the key will be `c-${channelId}`, if for a thread: `c-${channelId}:t-${threadId}`.
This commit also moves the draft holder from the service to the channel or thread model. The current draft can now always be accessed by doing: `channel.draft` or `thread.draft`.
Other notable changes of this commit:
- moves ChatChannel to gjs
- moves ChatThread to gjs
Group channels will allow users to create channels with a name and invite people. It's possible to add people even after creation of the channel. Removing users is not yet possible but will be added in the near future.
Technically a group channel is `direct_message_channel` with a group attribute set to true on its direct message (chatable). This model might evolve in the future but offers much flexibility for now without having to rely on a complex migration.
The commit essentially consists of:
- a migration to set existing direct message channels with more than 2 users to a group
- a new message creator which allows to search, add members, and create groups
- a new `AddUsersToChannel` service
- a modified `SearchChatable` service
Subscriptions manager have been a pain since the beginning, one of the problem is that thread and channels behave mostly the same but with various small difference which I expect to increase over time.
Trying to use subclasses for this case has proven to be a mistake, this commit now uses a class for each case (channel, thread) which for now contains a lot of duplication, which might be reduced in the future but has the merit to make reasoning about each case very simple.
This refactor is fixing a bug introduced in 90efdd7f9d which was causing the wrong channel to be unsubscribed, this shouldn't be possible anymore. We had tests for this which were disabled due to flakeyness, I will consider re-enabling them in the future.
Other notes:
- notices had been added to the subscriptions manager service, they have been moved into their own dedicated service: `ChatChannelNoticesManager`
- the `(each model)` trick used in `<ChatChannel />` since 90efdd7f9d to ensure atomicity has been applied to `<ChatThread />` too
We were incorrectly generating URLs with message id even when it was not provided, resulting in a route ending with "undefined", which was causing an error.
This commit also uses this opportunity to:
- move `invite_users` into a proper controller inside the API namespace
- refactors the code into a service: `Chat::InviteUsersToChannel`
As of #23867 this is now a real package, so updating the imports to
use the real package name, rather than relying on the alias. The
name change in the package name is because `I18n` is not a valid
name as NPM packages must be all lowercase.
This commit also introduces an eslint rule to prevent importing from
the old I18n path.
For themes/plugins, the old 'i18n' name remains functional.
The setting will change from "%{count} days" to "Chat settings have been set to retain channel messages for %{count} day."
This commit also:
- migrates `chat-retention-reminder` to gjs
- adds a "type" property to `chat-retention-reminder-text` to allow use a long or short text depending on where it's used.
It was slightly surprising to have a user card show when click on a thread item list.
More over this commit does:
- moves chat/user-avatar to chat-user-avatar and converts it to gjs
- moves chat/thread/participants to chat-thread-participants
- rewrite the `toggleCheckIfPossible` modifier to only be applied when selecting messages, it prevents the click event to collide with the click of avatars in regular messages
This PR is a first step towards private groups. It redesigns settings/members area of a channel and also drops the "about" page which is now mixed into settings.
This commit is also:
- introducing chat-form, a small DSL to create forms, ideally I would want something in core for this
- introducing a DToggleSwitch page object component to simplify testing toggles
- migrating various components to gjs
We noticed some of these tests were flaky, sometimes they fail on assertions
related to testing tooltips. Tooltips are generally hard to test, and it's not
necessary to test tooltips in every test case. This PR isolates tooltip testing
in a dedicated test case.
Note we already did the same thing for another spec in a9dfda2 and that
seems to worked well.
Tooltips are generally hard to test, and we noticed that they make tests flaky.
We may not test tooltips in these acceptance tests, since they are already
tested in components/chat-channel-test.js. This PR deletes tooltip-related
assertions and unskips tests that became flaky after adding them.
This PR introduces three new concepts to Discourse codebase through an addon called "FloatKit":
- menu
- tooltip
- toast
## Tooltips
### Component
Simple cases can be express with an API similar to DButton:
```hbs
<DTooltip
@Label={{i18n "foo.bar"}}
@ICON="check"
@content="Something"
/>
```
More complex cases can use blocks:
```hbs
<DTooltip>
<:trigger>
{{d-icon "check"}}
<span>{{i18n "foo.bar"}}</span>
</:trigger>
<:content>
Something
</:content>
</DTooltip>
```
### Service
You can manually show a tooltip using the `tooltip` service:
```javascript
const tooltipInstance = await this.tooltip.show(
document.querySelector(".my-span"),
options
)
// and later manual close or destroy it
tooltipInstance.close();
tooltipInstance.destroy();
// you can also just close any open tooltip through the service
this.tooltip.close();
```
The service also allows you to register event listeners on a trigger, it removes the need for you to manage open/close of a tooltip started through the service:
```javascript
const tooltipInstance = this.tooltip.register(
document.querySelector(".my-span"),
options
)
// when done you can destroy the instance to remove the listeners
tooltipInstance.destroy();
```
Note that the service also allows you to use a custom component as content which will receive `@data` and `@close` as args:
```javascript
const tooltipInstance = await this.tooltip.show(
document.querySelector(".my-span"),
{
component: MyComponent,
data: { foo: 1 }
}
)
```
## Menus
Menus are very similar to tooltips and provide the same kind of APIs:
### Component
```hbs
<DMenu @ICON="plus" @Label={{i18n "foo.bar"}}>
<ul>
<li>Foo</li>
<li>Bat</li>
<li>Baz</li>
</ul>
</DMenu>
```
They also support blocks:
```hbs
<DMenu>
<:trigger>
{{d-icon "plus"}}
<span>{{i18n "foo.bar"}}</span>
</:trigger>
<:content>
<ul>
<li>Foo</li>
<li>Bat</li>
<li>Baz</li>
</ul>
</:content>
</DMenu>
```
### Service
You can manually show a menu using the `menu` service:
```javascript
const menuInstance = await this.menu.show(
document.querySelector(".my-span"),
options
)
// and later manual close or destroy it
menuInstance.close();
menuInstance.destroy();
// you can also just close any open tooltip through the service
this.menu.close();
```
The service also allows you to register event listeners on a trigger, it removes the need for you to manage open/close of a tooltip started through the service:
```javascript
const menuInstance = this.menu.register(
document.querySelector(".my-span"),
options
)
// when done you can destroy the instance to remove the listeners
menuInstance.destroy();
```
Note that the service also allows you to use a custom component as content which will receive `@data` and `@close` as args:
```javascript
const menuInstance = await this.menu.show(
document.querySelector(".my-span"),
{
component: MyComponent,
data: { foo: 1 }
}
)
```
## Toasts
Interacting with toasts is made only through the `toasts` service.
A default component is provided (DDefaultToast) and can be used through dedicated service methods:
- this.toasts.success({ ... });
- this.toasts.warning({ ... });
- this.toasts.info({ ... });
- this.toasts.error({ ... });
- this.toasts.default({ ... });
```javascript
this.toasts.success({
data: {
title: "Foo",
message: "Bar",
actions: [
{
label: "Ok",
class: "btn-primary",
action: (componentArgs) => {
// eslint-disable-next-line no-alert
alert("Closing toast:" + componentArgs.data.title);
componentArgs.close();
},
}
]
},
});
```
You can also provide your own component:
```javascript
this.toasts.show(MyComponent, {
autoClose: false,
class: "foo",
data: { baz: 1 },
})
```
Co-authored-by: Martin Brennan <mjrbrennan@gmail.com>
Co-authored-by: Isaac Janzen <50783505+janzenisaac@users.noreply.github.com>
Co-authored-by: David Taylor <david@taylorhq.com>
Co-authored-by: Jarek Radosz <jradosz@gmail.com>
While very fast and powerful staged threads forces a lot of gymnastic and edge cases. This patch adds a new service `Chat::CreateThread` and uses it to create a thread unconditionally when a user replies to a message in a threading enabled channel. If the user actually doesn’t send a message we will have a thread with no messages which has no important impact and could even be periodically cleaned if necessary.
Note that this commit also moves message actions to .gjs as it was the original goal of this PR to correctly check for staged thread to show the menu or not.
Why this change?
We have been bitten by bugs where tests are not catching missing
interpolate argument in our client side code because the JavaScript
tests are also using `I18n.translate` to assert that the right message
is shown. Before this change, `I18n.interpolate` will just replace the
missing interpolation argument in the final translation with some
placeholder. As a result, we ended up comparing a broken translation
with another broken translation in the test environment.
Why does this change do?
This change introduces the `I18n.testing` property which when set to
`true` will cause `I18n.translate` to throw an error when an interpolate
argument is missing. With this commit, we also set `I18n.testing = true`
when running qunit acceptance test.
Second iteration of https://github.com/discourse/discourse/pull/23312 with a fix for embroider not resolving an export file using .gjs extension.
---
This PR introduces three new concepts to Discourse codebase through an addon called "FloatKit":
- menu
- tooltip
- toast
## Tooltips
### Component
Simple cases can be express with an API similar to DButton:
```hbs
<DTooltip
@label={{i18n "foo.bar"}}
@icon="check"
@content="Something"
/>
```
More complex cases can use blocks:
```hbs
<DTooltip>
<:trigger>
{{d-icon "check"}}
<span>{{i18n "foo.bar"}}</span>
</:trigger>
<:content>
Something
</:content>
</DTooltip>
```
### Service
You can manually show a tooltip using the `tooltip` service:
```javascript
const tooltipInstance = await this.tooltip.show(
document.querySelector(".my-span"),
options
)
// and later manual close or destroy it
tooltipInstance.close();
tooltipInstance.destroy();
// you can also just close any open tooltip through the service
this.tooltip.close();
```
The service also allows you to register event listeners on a trigger, it removes the need for you to manage open/close of a tooltip started through the service:
```javascript
const tooltipInstance = this.tooltip.register(
document.querySelector(".my-span"),
options
)
// when done you can destroy the instance to remove the listeners
tooltipInstance.destroy();
```
Note that the service also allows you to use a custom component as content which will receive `@data` and `@close` as args:
```javascript
const tooltipInstance = await this.tooltip.show(
document.querySelector(".my-span"),
{
component: MyComponent,
data: { foo: 1 }
}
)
```
## Menus
Menus are very similar to tooltips and provide the same kind of APIs:
### Component
```hbs
<DMenu @icon="plus" @label={{i18n "foo.bar"}}>
<ul>
<li>Foo</li>
<li>Bat</li>
<li>Baz</li>
</ul>
</DMenu>
```
They also support blocks:
```hbs
<DMenu>
<:trigger>
{{d-icon "plus"}}
<span>{{i18n "foo.bar"}}</span>
</:trigger>
<:content>
<ul>
<li>Foo</li>
<li>Bat</li>
<li>Baz</li>
</ul>
</:content>
</DMenu>
```
### Service
You can manually show a menu using the `menu` service:
```javascript
const menuInstance = await this.menu.show(
document.querySelector(".my-span"),
options
)
// and later manual close or destroy it
menuInstance.close();
menuInstance.destroy();
// you can also just close any open tooltip through the service
this.menu.close();
```
The service also allows you to register event listeners on a trigger, it removes the need for you to manage open/close of a tooltip started through the service:
```javascript
const menuInstance = this.menu.register(
document.querySelector(".my-span"),
options
)
// when done you can destroy the instance to remove the listeners
menuInstance.destroy();
```
Note that the service also allows you to use a custom component as content which will receive `@data` and `@close` as args:
```javascript
const menuInstance = await this.menu.show(
document.querySelector(".my-span"),
{
component: MyComponent,
data: { foo: 1 }
}
)
```
## Toasts
Interacting with toasts is made only through the `toasts` service.
A default component is provided (DDefaultToast) and can be used through dedicated service methods:
- this.toasts.success({ ... });
- this.toasts.warning({ ... });
- this.toasts.info({ ... });
- this.toasts.error({ ... });
- this.toasts.default({ ... });
```javascript
this.toasts.success({
data: {
title: "Foo",
message: "Bar",
actions: [
{
label: "Ok",
class: "btn-primary",
action: (componentArgs) => {
// eslint-disable-next-line no-alert
alert("Closing toast:" + componentArgs.data.title);
componentArgs.close();
},
}
]
},
});
```
You can also provide your own component:
```javascript
this.toasts.show(MyComponent, {
autoClose: false,
class: "foo",
data: { baz: 1 },
})
```
Co-authored-by: Martin Brennan <mjrbrennan@gmail.com>
Co-authored-by: Isaac Janzen <50783505+janzenisaac@users.noreply.github.com>
Co-authored-by: David Taylor <david@taylorhq.com>
Co-authored-by: Jarek Radosz <jradosz@gmail.com>
This PR introduces three new UI elements to Discourse codebase through an addon called "FloatKit":
- menu
- tooltip
- toast
Simple cases can be express with an API similar to DButton:
```hbs
<DTooltip
@label={{i18n "foo.bar"}}
@icon="check"
@content="Something"
/>
```
More complex cases can use blocks:
```hbs
<DTooltip>
<:trigger>
{{d-icon "check"}}
<span>{{i18n "foo.bar"}}</span>
</:trigger>
<:content>
Something
</:content>
</DTooltip>
```
You can manually show a tooltip using the `tooltip` service:
```javascript
const tooltipInstance = await this.tooltip.show(
document.querySelector(".my-span"),
options
)
// and later manually close or destroy it
tooltipInstance.close();
tooltipInstance.destroy();
// you can also just close any open tooltip through the service
this.tooltip.close();
```
The service also allows you to register event listeners on a trigger, it removes the need for you to manage open/close of a tooltip started through the service:
```javascript
const tooltipInstance = this.tooltip.register(
document.querySelector(".my-span"),
options
)
// when done you can destroy the instance to remove the listeners
tooltipInstance.destroy();
```
Note that the service also allows you to use a custom component as content which will receive `@data` and `@close` as args:
```javascript
const tooltipInstance = await this.tooltip.show(
document.querySelector(".my-span"),
{
component: MyComponent,
data: { foo: 1 }
}
)
```
Menus are very similar to tooltips and provide the same kind of APIs:
```hbs
<DMenu @icon="plus" @label={{i18n "foo.bar"}}>
<ul>
<li>Foo</li>
<li>Bat</li>
<li>Baz</li>
</ul>
</DMenu>
```
They also support blocks:
```hbs
<DMenu>
<:trigger>
{{d-icon "plus"}}
<span>{{i18n "foo.bar"}}</span>
</:trigger>
<:content>
<ul>
<li>Foo</li>
<li>Bat</li>
<li>Baz</li>
</ul>
</:content>
</DMenu>
```
You can manually show a menu using the `menu` service:
```javascript
const menuInstance = await this.menu.show(
document.querySelector(".my-span"),
options
)
// and later manually close or destroy it
menuInstance.close();
menuInstance.destroy();
// you can also just close any open tooltip through the service
this.menu.close();
```
The service also allows you to register event listeners on a trigger, it removes the need for you to manage open/close of a tooltip started through the service:
```javascript
const menuInstance = this.menu.register(
document.querySelector(".my-span"),
options
)
// when done you can destroy the instance to remove the listeners
menuInstance.destroy();
```
Note that the service also allows you to use a custom component as content which will receive `@data` and `@close` as args:
```javascript
const menuInstance = await this.menu.show(
document.querySelector(".my-span"),
{
component: MyComponent,
data: { foo: 1 }
}
)
```
Interacting with toasts is made only through the `toasts` service.
A default component is provided (DDefaultToast) and can be used through dedicated service methods:
- this.toasts.success({ ... });
- this.toasts.warning({ ... });
- this.toasts.info({ ... });
- this.toasts.error({ ... });
- this.toasts.default({ ... });
```javascript
this.toasts.success({
data: {
title: "Foo",
message: "Bar",
actions: [
{
label: "Ok",
class: "btn-primary",
action: (componentArgs) => {
// eslint-disable-next-line no-alert
alert("Closing toast:" + componentArgs.data.title);
componentArgs.close();
},
}
]
},
});
```
You can also provide your own component:
```javascript
this.toasts.show(MyComponent, {
autoClose: false,
class: "foo",
data: { baz: 1 },
})
```
Co-authored-by: Martin Brennan <mjrbrennan@gmail.com>
Co-authored-by: Isaac Janzen <50783505+janzenisaac@users.noreply.github.com>
Co-authored-by: David Taylor <david@taylorhq.com>
Co-authored-by: Jarek Radosz <jradosz@gmail.com>
We have the max_mentions_per_chat_message site settings; when a user tries
to mention more users than allowed, no one gets mentioned.
Chat messages may contain code-blocks with strings that look like mentions:
def foo
@bar + @baz
end
The problem is that the parsing code considers these as real mentions and counts
them when checking the limit. This commit fixes the problem.
The unread(s) will still show in the sidebar, outside of chat and when in drawer mode. This is to prevent the confusion to show an unread count for chat on a button which is going to take the user out of chat.
This PR swaps out the custom pathway to publishing and rendering mention warnings after a message is sent.
ChatPublisher#publish_notice is used, and expanded. Now, instead of only accepting text_content as an argument, component and component_args are accepted and there is a renderer for these components.
Translations moved to server, as notices expect text to be passed in unless a component is rendered
The warnings are rendered at the top now, outside of the scope of the single message that sent it.
I entirely removed the jit_messages_spec b/c it's duplicate testing of other parts of the app. IMO we don't need a backend test for a feature, a component test for the feature AND a system test (that is slow and potentially even flakey due to timing issues with wait) to test the same thing. So jit_messages_spec is gone.
Prior to this fix the text would be incorrect when the current user reacted and number of reactions was above 2.
This commit fixes the bug and also makes the following changes:
- separates text computation in a standalone lib to make it easier to test
- increases the number of displayed usernames in reaction text (from 5 to 15)
- adds a full test suite for this new `getReactionText` function
- fixes a bug in reaction fabricator which would prevent to change the count to zero
This fixes the problem reported in
https://meta.discourse.org/t/custom-status-message-in-front-of-by-header-on-scroll/273320.
This problem can be reproduced with any tooltip created using the DTooltip
component or the createDTooltip function.
The problem happens because the trigger for tooltip on mobile is click, and for tooltip
to disappear the user has to click outside the tooltip. This is the default behavior
of tippy.js – the library we use under the hood.
Note that this PR fixes the problem in topics, but not in chat. I'm going to investigate and
address it in chat in a following PR.
To fix it for tooltips created with the createDTooltip function, I had to make a refactoring.
We had a somewhat not ideal solution there, we were leaking an implementation detail
by passing tippy instances to calling sides, so they could then destroy them. With this fix,
I would have to make it more complex, because now we need to also remove onScrool
handlers, and I would need to leak this implementation detail too. So, I firstly refactored
the current solution in 5a4af05 and then added onScroll handlers in fb4aabe.
When refactoring this, I was running locally some temporarily skipped flaky tests. Turned out
they got a bit outdated, so I fixed them. Note that I'm not unskipping them in this commit,
we'll address them separately later.
This is also fixes the issue of chat composer warnings persisting across channels. Currently if you try to mention more groups than is allowed for example, a mention warning pops up. When you change channels the mention warning will not disappear even if there is no text in the composer.
This adds a reset function to the chat-composer-warnings-tracker.js, which is called when the channel is changed and the message is empty. In the event that the message is not empty we call captureMentions to check the loaded drafts' mentions.
This PR would be nicer if the post-send notice used the new chat notices API to publish the mention warnings but we would have to change the existing ones and I thought that would be too much change for this PR. It'd be a good followup though.
