View Transitions

[mira-kovar]

Feature Request

It would be nice to have support of View Transitions API when snippert replace its content.

Somewhere in SnippetHandler::updateSnippet insted of snippet.innerHTML = content; by documentation change to something like document.startViewTransition(() => snippet.innerHTML = content);. And ofcourse prepend and append...

Or please is there some way to hook/bypass snippet content change?

[jiripudil]

Hi, I guess you could use the beforeUpdate event and wrap the snippet update operation. I'm writing this off the top of my head, so it's not guaranteed to work as is, but the idea is there:

naja.snippetHandler.addEventListener('beforeUpdate', (event) => {
    const originalOperation = event.detail.operation;
    event.detail.changeOperation((snippet, content) => document.startViewTransition(() => originalOperation(snippet, content)));
});

[mira-kovar]

Hi, thanks. Nice trick.