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Servo/StyleUpdateOnDOMChange: Difference between revisions
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→Handling of style updates when the DOM changes
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# Whether an element matches the subject sequence of simple selectors of some selector changes due to insertions or deletions of element subtrees in the DOM. This can be caused by + and ~ combinators, as well as by use of structural pseudo-classes like :nth-child, :empty, etc. The consequences are the same as for item 1. The hard part here is figuring out which elements are affected by a given insertion/deletion. | # Whether an element matches the subject sequence of simple selectors of some selector changes due to insertions or deletions of element subtrees in the DOM. This can be caused by + and ~ combinators, as well as by use of structural pseudo-classes like :nth-child, :empty, etc. The consequences are the same as for item 1. The hard part here is figuring out which elements are affected by a given insertion/deletion. | ||
# Whether an element matches a non-subject sequence of simple selectors changes due to attribute or state changes on the element. The set of elements which now match the subject sequence of simple selectors needs to be recomputed. What that set is depends on the exact combinators used in the selector. | # Whether an element matches a non-subject sequence of simple selectors changes due to attribute or state changes on the element. The set of elements which now match the subject sequence of simple selectors needs to be recomputed. What that set is depends on the exact combinators used in the selector. | ||
== Gecko's handling of style updates == | |||