gecko-dev/extensions
Jan-Niklas Jaeschke ebf3cd6240 Bug 1808565, part 1: Adapt `Selection` to support `StaticRange`s. r=webidl,saschanaz,masayuki,smaug
This change is necessary to support the [CSS Highlight API](https://drafts.csswg.org/css-highlight-api-1/),
which uses `Selection` internally.

To replace `nsRange` with `AbstractRange`, some sections needed to be
adapted since `nsRange`-specific features were used.
Therefore, some methods (such as `GetRangeAt()`) may only be called if
the `Selection` is *not* of type `SelectionType::eHighlight`,
as it (per spec) returns an `nsRange`.
These methods will now `MOZ_ASSERT` if called for a highlight selection.
Additional methods are implemented which return `AbstractRange`
instead and are safe to be called for every selection type.

This commit also improves support of highlight features:
- Invalidation of highlight ranges: adding/removing Ranges in-place instead of
  removing and re-adding the Selection object associated with the highlight.
- Ranges are only associated with the Selection that shares the same Document
- Fixed minor IDL issue

Differential Revision: https://phabricator.services.mozilla.com/D170582
2023-03-03 14:59:47 +00:00
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spellcheck Bug 1808565, part 1: Adapt `Selection` to support `StaticRange`s. r=webidl,saschanaz,masayuki,smaug 2023-03-03 14:59:47 +00:00
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