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Florian Duros 1f83ba4bbb Room list: add drag and drop of sections to reorder them (#33606) 
* feat(rls): centralize room-list section ordering via getOrderedSections

Introduce a single source of truth for the ordered list of section
tags (defaults + custom) in section.ts. RoomListStoreV3 no longer
hard-codes the default tag order — it asks section.ts.

* feat(vm): add section reorder logic to RoomListStoreV3 and view model

* refactor(sc): extract RoomListSectionHeaderContent from RoomListSectionHeaderView

* feat(sc): add drag-and-drop reordering for room-list sections

* test(sc): update existing tests

* test: add new tests

* test(sc): add snapshot test for overlay

* test(e2e): add playright test for dnd of sections

* feat: tweak opacity

* fix: section detection when dragged

* feat: use relative position in section order

* chore: move style to room list section header view

* test: add e2e test for moving section before another

* feat: make favourite and low priority no draggable

* test: remove deprecated e2e test

* fix: type correctly dnd provider and hooks

* fix: use String instead of casting to string

* fix: wrong a11y attributes on section header

* test: fix keyboard navigation e2e tests

* feat: use custom a11y announcement for dnd

* fix: add aria-hidden to the overlay

* chore: remove duplicated code in a11Y announcement

* fix: increase keyboard drag offset

* fix: tests

* fix: virtuoso computed item key

* fix: aria-expanded double annoncement why dragging

* fix: re-add screen reader instructions

* chore: remove unused import

* fix: reduce keyboard drag offset

* fix: improve text readback on unread section

* feat: use a custom a11y plugin instead of buitin a11y plugin

* chore: formatting

* test: fix incorrect tests

* chore: use randomUUID

* fix: try to make test working

* fix: put back mock

* fix: circular import

* Revert "fix: circular import"

This reverts commit 6c69313ade.

* chore: add @dnd-kit/abstract to optimizeDeps.include

* test: fix e2e tests

* fix: disable interaction with section when dragging

* fix: be more explicit if the section will be dropped before or after

* fix: add info that space is dropping too

* fix: scroll to dropped section

* test: fix virtualized room list test

* chore: update lang

* chore: fix dead code analyze

* test: add provider section story

* fix: lang

* fix: again lang...

* fix: improve voice over on chrome

* test: upate snapshot

* fix: add readback when a section is over a non droppable element
2026-06-26 10:00:44 +00:00
..
__mocks__
Migrate more jest tests to vitest (#33898)
2026-06-19 15:34:18 +00:00
@types
Update css (#32552)
2026-03-20 15:17:07 +00:00
debian
mv element.io @types __mocks__/ debian docker module_system/ playwright res src test webapp Dockerfile .dockerignore .eslintignore .stylelintrc.cjs babel.config.cjs recorder-worklet-loader.cjs .modernizr.json components.json config.json config.sample.json package.json project.json tsconfig.json tsconfig.module_system.json jest.config.ts playwright.config.ts webpack.config.ts build_config.sample.yaml apps/web/
2026-02-24 15:43:58 +00:00
docker
Update nginx default config around caching (#32884)
2026-03-23 16:40:10 +00:00
element.io
Update links to old repo
2026-03-24 13:33:49 +00:00
module_system
mv element.io @types __mocks__/ debian docker module_system/ playwright res src test webapp Dockerfile .dockerignore .eslintignore .stylelintrc.cjs babel.config.cjs recorder-worklet-loader.cjs .modernizr.json components.json config.json config.sample.json package.json project.json tsconfig.json tsconfig.module_system.json jest.config.ts playwright.config.ts webpack.config.ts build_config.sample.yaml apps/web/
2026-02-24 15:43:58 +00:00
playwright
Room list: add drag and drop of sections to reorder them (#33606)
2026-06-26 10:00:44 +00:00
res
Make codebase comply to knip --strict (#33893)
2026-06-18 09:35:47 +00:00
scripts
Rewrite copy-res i18n build as a webpack plugin (#32664)
2026-02-27 13:00:25 +00:00
src
Room list: add drag and drop of sections to reorder them (#33606)
2026-06-26 10:00:44 +00:00
test
Room list: add drag and drop of sections to reorder them (#33606)
2026-06-26 10:00:44 +00:00
.eslintignore
mv element.io @types __mocks__/ debian docker module_system/ playwright res src test webapp Dockerfile .dockerignore .eslintignore .stylelintrc.cjs babel.config.cjs recorder-worklet-loader.cjs .modernizr.json components.json config.json config.sample.json package.json project.json tsconfig.json tsconfig.module_system.json jest.config.ts playwright.config.ts webpack.config.ts build_config.sample.yaml apps/web/
2026-02-24 15:43:58 +00:00
.eslintrc.cjs
Refactor languageHandler to avoid import cycles (#33948)
2026-06-24 09:49:49 +00:00
.gitignore
mv element.io @types __mocks__/ debian docker module_system/ playwright res src test webapp Dockerfile .dockerignore .eslintignore .stylelintrc.cjs babel.config.cjs recorder-worklet-loader.cjs .modernizr.json components.json config.json config.sample.json package.json project.json tsconfig.json tsconfig.module_system.json jest.config.ts playwright.config.ts webpack.config.ts build_config.sample.yaml apps/web/
2026-02-24 15:43:58 +00:00
.lintstagedrc
Switch from prettier to oxfmt (#33844)
2026-06-16 12:17:18 +00:00
.modernizr.json
mv element.io @types __mocks__/ debian docker module_system/ playwright res src test webapp Dockerfile .dockerignore .eslintignore .stylelintrc.cjs babel.config.cjs recorder-worklet-loader.cjs .modernizr.json components.json config.json config.sample.json package.json project.json tsconfig.json tsconfig.module_system.json jest.config.ts playwright.config.ts webpack.config.ts build_config.sample.yaml apps/web/
2026-02-24 15:43:58 +00:00
.stylelintrc.cjs
Update pnpm to v11 (#33573)
2026-05-29 08:26:59 +00:00
babel.config.cjs
mv element.io @types __mocks__/ debian docker module_system/ playwright res src test webapp Dockerfile .dockerignore .eslintignore .stylelintrc.cjs babel.config.cjs recorder-worklet-loader.cjs .modernizr.json components.json config.json config.sample.json package.json project.json tsconfig.json tsconfig.module_system.json jest.config.ts playwright.config.ts webpack.config.ts build_config.sample.yaml apps/web/
2026-02-24 15:43:58 +00:00
build_config.sample.yaml
mv element.io @types __mocks__/ debian docker module_system/ playwright res src test webapp Dockerfile .dockerignore .eslintignore .stylelintrc.cjs babel.config.cjs recorder-worklet-loader.cjs .modernizr.json components.json config.json config.sample.json package.json project.json tsconfig.json tsconfig.module_system.json jest.config.ts playwright.config.ts webpack.config.ts build_config.sample.yaml apps/web/
2026-02-24 15:43:58 +00:00
components.json
mv element.io @types __mocks__/ debian docker module_system/ playwright res src test webapp Dockerfile .dockerignore .eslintignore .stylelintrc.cjs babel.config.cjs recorder-worklet-loader.cjs .modernizr.json components.json config.json config.sample.json package.json project.json tsconfig.json tsconfig.module_system.json jest.config.ts playwright.config.ts webpack.config.ts build_config.sample.yaml apps/web/
2026-02-24 15:43:58 +00:00
config.sample.json
mv element.io @types __mocks__/ debian docker module_system/ playwright res src test webapp Dockerfile .dockerignore .eslintignore .stylelintrc.cjs babel.config.cjs recorder-worklet-loader.cjs .modernizr.json components.json config.json config.sample.json package.json project.json tsconfig.json tsconfig.module_system.json jest.config.ts playwright.config.ts webpack.config.ts build_config.sample.yaml apps/web/
2026-02-24 15:43:58 +00:00
Dockerfile
Update dockerfile non-major dependencies to v1.25 (#33896)
2026-06-18 09:41:17 +00:00
Dockerfile.dockerignore
Playwright docker improvements (#33213)
2026-04-21 09:58:16 +00:00
I18nWebpackPlugin.ts
Rewrite copy-res i18n build as a webpack plugin (#32664)
2026-02-27 13:00:25 +00:00
jest.config.ts
Migrate more jest tests to vitest (#33898)
2026-06-19 15:34:18 +00:00
package.json
Reset matrix-js-sdk back to develop branch
2026-06-23 13:36:51 +00:00
playwright.config.ts
Configuration for nx output under playwright (#33177)
2026-04-16 16:29:32 +00:00
project.json
Use vitest for some EW unit tests (#33816)
2026-06-15 13:24:33 +00:00
README.md
Update docs
2026-06-08 10:32:55 +01:00
recorder-worklet-loader.cjs
mv element.io @types __mocks__/ debian docker module_system/ playwright res src test webapp Dockerfile .dockerignore .eslintignore .stylelintrc.cjs babel.config.cjs recorder-worklet-loader.cjs .modernizr.json components.json config.json config.sample.json package.json project.json tsconfig.json tsconfig.module_system.json jest.config.ts playwright.config.ts webpack.config.ts build_config.sample.yaml apps/web/
2026-02-24 15:43:58 +00:00
tsconfig.json
Migrate more jest tests to vitest (#33898)
2026-06-19 15:34:18 +00:00
tsconfig.module_system.json
mv element.io @types __mocks__/ debian docker module_system/ playwright res src test webapp Dockerfile .dockerignore .eslintignore .stylelintrc.cjs babel.config.cjs recorder-worklet-loader.cjs .modernizr.json components.json config.json config.sample.json package.json project.json tsconfig.json tsconfig.module_system.json jest.config.ts playwright.config.ts webpack.config.ts build_config.sample.yaml apps/web/
2026-02-24 15:43:58 +00:00
vitest.config.ts
Migrate more jest tests to vitest (#33898)
2026-06-19 15:34:18 +00:00
webpack.config.ts
Replace override raw-loader with ?raw query (#33854)
2026-06-18 09:36:07 +00:00

README.md

Important Security Notes

Separate domains

We do not recommend running Element from the same domain name as your Matrix homeserver. The reason is the risk of XSS (cross-site-scripting) vulnerabilities that could occur if someone caused Element to load and render malicious user generated content from a Matrix API which then had trusted access to Element (or other apps) due to sharing the same domain.

We have put some coarse mitigations into place to try to protect against this situation, but it's still not good practice to do it in the first place. See https://github.com/element-hq/element-web/issues/1977 for more details.

Configuration best practices

Unless you have special requirements, you will want to add the following to your web server configuration when hosting Element Web:

  • The X-Frame-Options: SAMEORIGIN header, to prevent Element Web from being framed and protect from clickjacking.
  • The frame-ancestors 'self' directive to your Content-Security-Policy header, as the modern replacement for X-Frame-Options (though both should be included since not all browsers support it yet, see this).
  • The X-Content-Type-Options: nosniff header, to disable MIME sniffing.
  • The X-XSS-Protection: 1; mode=block; header, for basic XSS protection in legacy browsers.

If you are using nginx, this would look something like the following:

add_header X-Frame-Options SAMEORIGIN;
add_header X-Content-Type-Options nosniff;
add_header X-XSS-Protection "1; mode=block";
add_header Content-Security-Policy "frame-ancestors 'self'";

For Apache, the configuration looks like:

Header set X-Frame-Options SAMEORIGIN
Header set X-Content-Type-Options nosniff
Header set X-XSS-Protection "1; mode=block"
Header set Content-Security-Policy "frame-ancestors 'self'"

Note: In case you are already setting a Content-Security-Policy header elsewhere, you should modify it to include the frame-ancestors directive instead of adding that last line.

Building From Source

Element is a modular webapp built with modern ES6 and uses a Node.js build system. Ensure you have the latest LTS version of Node.js installed.

Using pnpm instead of npm is recommended. Please see the pnpm install guide if you do not have it already.

  1. Install or update node.js so that your node is at least the current recommended LTS.
  2. Install pnpm if not present already.
  3. Clone the repo: git clone https://github.com/element-hq/element-web.git.
  4. Switch to the element-web directory: cd element-web/apps/web.
  5. Install the prerequisites: pnpm install.
  6. Configure the app by copying config.sample.json to config.json and modifying it. See the configuration docs for details.
  7. pnpm dist to build a tarball to deploy. Untaring this file will give a version-specific directory containing all the files that need to go on your web server.

Note that pnpm dist is not supported on Windows, so Windows users can run pnpm build, which will build all the necessary files into the webapp directory. The version of Element will not appear in Settings without using the dist script. You can then mount the webapp directory on your web server to actually serve up the app, which is entirely static content.

config.json

Element supports a variety of settings to configure default servers, behaviour, themes, etc. See the configuration docs for more details.

Labs Features

Some features of Element may be enabled by flags in the Labs section of the settings. Some of these features are described in labs.md.

Caching requirements

Element requires the following URLs not to be cached, when/if you are serving Element from your own webserver:

/config.*.json
/i18n
/version
/index.html

We also recommend that you force browsers to re-validate any cached copy of Element on page load by configuring your webserver to return Cache-Control: no-cache for /. This ensures the browser will fetch a new version of Element on the next page load after it's been deployed. Note that this is already configured for you in the nginx config of our Dockerfile.

Development

Please read through the following:

  1. Developer guide
  2. Code style
  3. Contribution guide

Extending Element Web with Modules

Element Web supports a module system that allows you to extend or modify functionality at runtime. Modules are loaded dynamically and provide a safe, predictable API for customization.

What are modules?

Modules are extensions that can add or modify Element Web's functionality. They are:

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