Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Summary
Since some of the styles used in the File picker can have an effect on the parent document, it is needed to handle the styles inside of shadowRoot and have them isolated.
One challenge though - vite does not inject styles into the built bundle when library mode is used in the config (open issue here vitejs/vite#1579). This of course brings the problem of including the style inside the shadowRoot. Some plugins exists that can still handle the injection but unfortunately does not work with custom elements as it anyway tries to add the styles into the document instead of shadowRoot. This forces us to append the styles ourselves into the shadowRoot when the custom element is being constructed.
This change does not affect the lib build as the style.css file is still there and can be imported manually in a scoped context.
Theming will be handled via CSS custom properties.