feat: Add full screen support for ObjectPreview iframes#224
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alukach merged 2 commits intosource-cooperative:mainfrom Feb 12, 2026
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alukach
approved these changes
Feb 12, 2026
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What I'm changing
This change enables the ObjectPreview
iframeelement to launch full screen mode for viewers that request it, such as the image and 3D model viewers from #210.How I did it
I've added the permissions policy
allow="fullscreen"to theiframein ObjectPreview. This enables any current or future viewer to launch full screen mode.An alternative approach would be to make
allowa custom per-format attribute likestyle, but this seems simpler.How you can test it
On a preview branch where this feature is active, navigate to the following pages and click the "Toggle full screen" button within the preview
iframe: