> > >>> >>> Summary >>> >>> The `pageswap` event is fired on a Document's window object when a >>> navigation will replace this Document with a new Document. The event >>> provides activation info about the navigation (type, NavigationHistoryEntry >>> for the new Document). If the navigation has a cross-document >>> ViewTransition, the event is dispatched before capturing state for the old >>> Document. This allows the page-author to configure the old state captured >>> for the transition based on the navigation's activation info and the >>> current visual state of the old Document. This feature is split out from >>> the larger ViewTransition-on-Navigation project. >>> >> > Why is it split out? Is there some utility for this regardless of view > transitions? >
Absolutely! For example it's a place where you can figure out that you're navigating away to a different same-origin document (after redirects), and act on it in some way, e.g. put something in `sessionStorage` like a video playback position. It's different from `pagehide` in that sense, because with `pagehide` you don't know you're going to a new document. Also by having a generic event with an optional viewTransition property, it can tell the author that a view transition *didn't* take place, which we can't do with a view-transition event. The design for this (as for `pagerveal`) started from view-transition-specific events and ended up gravitating towards this kind of event with an optional attribute for this reason, and also to avoid a situation where people create fake view transitions for the purpose of getting these events. > > >> >>> Blink componentBlink>ViewTransitions >>> <https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3EViewTransitions> >>> >>> TAG review >>> https://github.com/w3ctag/design-reviews/issues/851#issuecomment-1924730258 >>> >>> TAG review statusPending >>> >>> Risks >>> >>> Interoperability and Compatibility >>> >>> None >>> >>> *Gecko*: Positive ( >>> https://github.com/mozilla/standards-positions/issues/969) >>> >> > Is that the right position? > Yes, the name was changed while iterating, but it's the same feature and Gecko folks took active part in the design and reviews. -- You received this message because you are subscribed to the Google Groups "blink-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to blink-dev+unsubscr...@chromium.org. To view this discussion on the web visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAJn%3DMYYb4%2BSePOLv8fPy4g0CXaH5QGhd0OoMeUCuBHPzDM_fqQ%40mail.gmail.com.
