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Spec: https://drafts.csswg.org/cssom/#dom-documentorshadowroot-adoptedstylesheets Implement `DocumentOrShadowDOM.adoptedStylesheet`. Due to `ObservableArray` being a massive issue on its own, it will be as it was a `FrozenArray` at first. This approach is similar to how Gecko implement adopted stylesheet. See https://phabricator.services.mozilla.com/D144547#change-IXyOzxxFn8sU. All of the changes will be gated behind a preference `dom_adoptedstylesheet_enabled`. Adopted stylesheet is implemented by adding the setter and getter of it. While the getter works like a normal attribute getter, the setter need to consider the inner working of document and shadow root StylesheetSet, specifically the ordering and the invalidations. Particularly for setter, we will clear all of the adopted stylesheet within the StylesheetSet and readd them. Possible optimization exist, but the focus should be directed to implementing `ObservableArray`. More context about the implementations https://hackmd.io/vtJAn4UyS_O0Idvk5dCO_w. Testing: Existing WPT Coverage Fixes: https://github.com/servo/servo/issues/37561 --------- Signed-off-by: Jo Steven Novaryo <jo.steven.novaryo@huawei.com> |
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| pref_util.rs | ||
| prefs.rs | ||