Wire up Diva v7 viewer events, page tracking, and manifest info - #971
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Wire up Diva v7 viewer events, page tracking, and manifest info#971etosphere wants to merge 2 commits into
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This commit gives the v7 backend its read path. After previous commits the v7 backend only proved the wiring and emitted no events, which kept DivaView's downstream folio code dormant; it now drives the viewer's lifecycle and page state through the adapter's existing, backend-neutral interface. DivaBackendV7 listens for v7's diva-page-change DOM event on the (viewer:loaded, document:loaded, page:changed). v7 has no public readiness signal, so the first diva-page-change stands in for viewer:loaded / document:loaded. The backend tracks the current page index from that event and derives the page image URIs from the viewer's tile sources, which keeps getCurrentPageURI / getAllPageURIs / getCurrentPageIndex working as before. This commit contains only the JavaScript source; the built bundles under nginx/static are not regenerated in this commit.
The v7 backend now provides the manifest's image attribution. v7 has
no ManifestDidLoad event, so DivaBackendV7 fetches the manifest itself
and emits manifest:loaded with the attribution, logo, and licence.
A shared manifestMetadata helper flattens both IIIF v2 and v3 manifests
into { imageAttribution, imageLogoUrl, imageLicence }.
The "Manuscript info" button doesn't exist on v7 this yet, which will be
implemented in future commits.
This commit contains only the JavaScript source; the built bundles under
nginx/static are not regenerated in this commit.
This was referenced Aug 5, 2026
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Closes #965.