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).
