Stop using global initial styles for stylo; the initial styles need to be per-document
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Implement discarding Document objects to reclaim space.
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This PR implements document discarding. Active documents are kept alive strongly, but inactive documents are only kept alive weakly. When a document is GCd, it is marked as discarded, and if it is every reactivated, a reload of the URL is triggered.
Note that this PR is pretty aggressive about discarding, and can any inactive document (other than those being kept alive by other same-origin pipelines). We might want to damp it down a bit.
Also note that this interacts with browser.html in that the reloading triggered by reactivating a document triggers mozbrowser events.
To test this, I added a `-Zdiscard-inactive-documents` debug flag, which discards all inactive documents, even ones which are reachable through other same-origin pipelines.
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Avoid restyling elements that aren't in a document
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- [X] These changes fix#14480
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Properly dispatch keypress event
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This was an attempt to fix#14659. It turned out that the problem wasn't what I thought it was. So, I didn't fix that. On the brighter side, this fixes two related issues.
- Previously, we were unable to launch `keypress` events from `input` and `textarea` elements, because [we'd been cancelling](1327ebd52f/components/script/dom/htmlinputelement.rs (L1120-L1124)) the key events, so that they don't trigger window navigation - #8400). I've introduced an enum to represent an additional state to an event's cancellation.
- [According to the spec](https://w3c.github.io/uievents/#keypress-event-order), `keypress` (if available) should be dispatched immediately after `keydown`, and it should be followed by `input`. Canceling `keypress` should also cancel `input`. But, we'd been dispatching `input` before `keypress`. We now dispatch `input` once the `keypress` event is on the respective elements.
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r? @jdm or anyone interested
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style: Simplify Debug impl for PropertyDeclaration reusing to_css.
These two functions appear in the data from bug 1328497, and the second part of one is identical to the other.
I think the way to fix this is another one (either using static arrays to get
the interesting data, or making rust generate the equivalent code).
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These two functions appear in the data from bug 1328497.
I think the way to fix this is another one (either using static arrays to get
the interesting data, or making rust generate the equivalent code).
Track stylesheet load's document instead of using element's current document
For cases where a stylesheet load finishes in a different document than it started, we need to be more careful about which document we report the completion to. In this case we actually have separate requests for each document involved, but they previously used the same element to determine which document to interact with.
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- [X] These changes fix#14641
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