Matthew Hodgson d8a2ac75a8 Fix CurrentValuePublisher.map dropping updates when the mapped publisher is chained inline (#5870)
* Fix CurrentValuePublisher.map dropping updates when the mapped publisher is chained inline

The eager implementation bridged through a second CurrentValueSubject fed by
a sink whose AnyCancellable was stored on the returned struct. Combine
consumes publisher structs when building a subscription, so chaining the
mapped publisher inline (e.g. `publisher.map { … }.removeDuplicates(…)
.sink { … }`, as RoomScreenViewModel and RoomDetailsScreenViewModel do for
knock requests) dropped the only copy holding that cancellable: the feeding
sink was cancelled and subscribers only ever received the initial value.

In practice this meant a room admin viewing a knockable room never saw the
"wants to join" banner (or a live "Requests to join" badge) for a knock
arriving while the room was open — it only appeared when the knock predated
opening the room. Caught by a live cross-client knocking test; the
double-execution of the transform at subscription time (eager transform +
current-value replay) was the giveaway.

Make map lazy instead: keep the transformed AnyPublisher and a value
provider, so subscribers attach straight through to the source subject (which
replays its current value itself) and no keep-alive is needed. Adds a
regression test chaining a mapped publisher inline.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* swiftformat

* better docs

---------

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
Co-authored-by: Mauro Romito <mauro.romito@element.io>
2026-07-14 15:02:56 +02:00
2026-07-10 17:59:42 +01:00
2026-06-18 17:55:31 +02:00
2026-07-10 18:12:05 +01:00
2026-07-02 17:12:39 +02:00
2026-02-13 16:45:58 +01:00
2026-07-09 10:01:57 -07:00
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Element iOS Matrix room #element-x-ios:matrix.org GitHub

Build Status GitHub release (latest by date)

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Element X iOS

Element X iOS is the next-generation Matrix client provided by Element.

Compared to the previous-generation Element Classic, it is a total rewrite using the Matrix Rust SDK underneath and targeting devices running iOS 18+.

Rust SDK

Element X leverages the Matrix Rust SDK through an FFI layer exposed as a swift package that the final client can directly import and use. We're doing this as a way to share code between platforms, with Element X Android using the same SDK.

Status

This project is actively developed and supported. New users are recommended to use Element X instead of the previous-generation app.

Contributing

Please see our contribution guide.

Come chat with the community in the dedicated Matrix room.

Build instructions

Please refer to the setting up a development environment section from the contribution guide.

Support

When you are experiencing an issue on Element X iOS, please first search in GitHub issues and then in #element-x-ios:matrix.org. If after your research you still have a question, ask at #element-x-ios:matrix.org. Otherwise feel free to create a GitHub issue if you encounter a bug or a crash, by explaining clearly in detail what happened. You can also perform bug reporting (Rageshake) from the Element application by going to the application settings. This is especially recommended when you encounter a crash.

Forking

Please read our forking guide.

Copyright (c) 2025 - 2026 Element Creations Ltd. Copyright (c) 2022 - 2025 New Vector Ltd.

This software is dual licensed by Element Creations Ltd (Element). It can be used either:

(1) for free under the terms of the GNU Affero General Public License (as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version); OR

(2) under the terms of a paid-for Element Commercial License agreement between you and Element (the terms of which may vary depending on what you and Element have agreed to).

Unless required by applicable law or agreed to in writing, software distributed under the Licenses is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the Licenses for the specific language governing permissions and limitations under the Licenses.

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