* Summary: fix slowness due to layout thrashing when reloading a large set of status updates
in order to limit the maximum size of a status in a list view (e.g. the home timeline), so as to avoid having to scroll all the way through an abnormally large status update (see https://github.com/tootsuite/mastodon/pull/8205), the following steps are taken:
•the element containing the status is rendered in the browser
•its height is calculated, to determine if it exceeds the maximum height threshold.
Unfortunately for performance, these steps are carried out in the componentDidMount(/Update) method, which also performs style modifications on the element. The combination of height request and style modification during javascript evaluation in the browser leads to layout-thrashing, where the elements are repeatedly re-laid-out (see https://developers.google.com/web/fundamentals/performance/rendering/avoid-large-complex-layouts-and-layout-thrashing & https://developer.mozilla.org/en-US/docs/Mozilla/Firefox/Performance_best_practices_for_Firefox_fe_engineers).
The solution implemented here is to memoize the collapsed state in Redux the first time the status is seen (e.g. when fetched as part of a small batch, to populate the home timeline) , so that on subsequent re-renders, the value can be queried, rather than recalculated. This strategy is derived from https://github.com/tootsuite/mastodon/pull/4439 & https://github.com/tootsuite/mastodon/pull/4909, and should resolve https://github.com/tootsuite/mastodon/issues/12455.
Andrew Lin (https://github.com/onethreeseven) is thanked for his assistance in root cause analysis and solution brainstorming
* remove getSnapshotBeforeUpdate from status
* remove componentWillUnmount from status
* persist last-intersected status update and restore when ScrollableList is restored
e.g. when navigating from home-timeline to a status conversational thread and <Back again
* cache currently-viewing status id to avoid calling redux with identical value
* refactor collapse toggle to pass explicit boolean
* Add responsive panels to the single-column layout
* Fixes
* Fix not being able to save the preference
* Fix code style issues
* Set max-height on the compose textarea and add a link to relationship manager
* Return Status with raw text in raw_content when deleting a status
* Use raw content if available on delete & redraft
* Rename raw_content to text; do not serialize formatted content when source is requested
* Add <ostatus:conversation /> tag to Atom input/output
Only uses ref attribute (not href) because href would be
the alternate link that's always included also.
Creates new conversation for every non-reply status. Carries
over conversation for every reply. Keeps remote URIs verbatim,
generates local URIs on the fly like the rest of them.
* Conversation muting - prevents notifications that reference a conversation
(including replies, favourites, reblogs) from being created. API endpoints
/api/v1/statuses/:id/mute and /api/v1/statuses/:id/unmute
Currently no way to tell when a status/conversation is muted, so the web UI
only has a "disable notifications" button, doesn't work as a toggle
* Display "Dismiss notifications" on all statuses in notifications column, not just own
* Add "muted" as a boolean attribute on statuses JSON
For now always false on contained reblogs, since it's only relevant for
statuses returned from the notifications endpoint, which are not nested
Remove "Disable notifications" from detailed status view, since it's
only relevant in the notifications column
* Up max class length
* Remove pending test for conversation mute
* Add tests, clean up
* Rename to "mute conversation" and "unmute conversation"
* Raise validation error when trying to mute/unmute status without conversation
* Replace browserify with webpack
* Add react-intl-translations-manager
* Do not minify in development, add offline-plugin for ServiceWorker background cache updates
* Adjust tests and dependencies
* Fix production deployments
* Fix tests
* More optimizations
* Improve travis cache for npm stuff
* Re-run travis
* Add back support for custom.scss as before
* Remove offline-plugin and babili
* Fix issue with Immutable.List().unshift(...values) not working as expected
* Make travis load schema instead of running all migrations in sequence
* Fix missing React import in WarningContainer. Optimize rendering performance by using ImmutablePureComponent instead of
React.PureComponent. ImmutablePureComponent uses Immutable.is() to compare props. Replace dynamic callback bindings in
<UI />
* Add react definitions to places that use JSX
* Add Procfile.dev for running rails, webpack and streaming API at the same time
Matt Panaro