Support for cross-browser web extensions

[kalikiana]

Aside from its own native extension (plugin) interface Midori should support web extensions. The use cases are:

• Use existing extensions for other browsers
• Facilitate feature development based on web technologies
• Share extensions between platforms (Android, GTK+)

Issues or merge requests should be linked next to the items, which should be checked as they're implemented.

• [x] Recognize manifest.json analogous to *.plugin #250
• [x] Content scripts/ styles #250
• [x] Background page/ scripts #250
• [ ] API exposed to content scripts
• [x] Browser action in toolbar #250
• [ ] Page action in urlbar
• [x] Sidebar support #297
• [ ] Context menu
• [ ] Proxy override
• [ ] Interception of network requests
• [ ] Hide buttons easily via right-click
• [ ] Keyboard shortcuts (commands)
• [ ] Manage web extensions in the preferences dialog #379
• [ ] Localization
• [ ] Options accessible from the preferences dialog
• [ ] Permissions
• [x] Load extensions from local folders #250
• [x] Open ZIP archives on the fly #255
• [ ] Install extensions from the web
• [ ] Side-load extensions locally
• [ ] Unit tests
• [ ] Theme extensions

See ANDROID-10 for the Android epic

For reference:

• Browser Extensions Spec
• Compatibility with Chrome in Microsoft Edge
• Chrome extensions

[kalikiana]

With initial (built-in) extension having landed, we can look into more specific aspects and interfaces to support as well as UX tasks as outlined in the proposal.

[zonia3000]

Hi, sorry for the stupid question... I'm developing a simple cross-browser extension, in which folder should I put it for trying it on Midori? I installed Midori on Ubuntu using snap.

[kalikiana]

Hi, sorry for the stupid question... I'm developing a simple cross-browser extension, in which folder should I put it for trying it on Midori? I installed Midori on Ubuntu using snap.

It should go in ~/.local/share/midori/extensions/, in the case of the snap you'll want to prefix it with the snap home i.e. ~/snap/midori/current/ so it would become ~/snap/midori/current/.local/share/midori/extensions/.

[RJVB]

What else do you need to do to get an extension (say in a .xpi container) to load, or else to get some diagnostic output explaining why it isn't being loaded?

[alex-eri]

Using v9.0-7-gd8546ca from snap and dont see content_scripts loaded in inspector.