RE: Offline-enabled online book & ebook reader

Glad to hear your ["probable"] support for a manifest. I think that is really essential for a PWP. And although I will be happy to be corrected if I'm wrong, I don't think a spine or <nav> is sufficient, since there can be so many resources (of so many types) that are only indirectly discoverable through them.—Bill K

From: Ivan Herman [mailto:ivan@w3.org]
Sent: Monday, November 09, 2015 4:32 AM
To: Jake Archibald
Cc: W3C Digital Publishing IG; Tzviya Siegman
Subject: Re: Offline-enabled online book & ebook reader

Hi Jake,

sorry for the late reply, I was on the road last week, too (I went to China from Sapporo).

I looked at your code. I do not claim (I could not claim:-) that I understand everything in the code, far from it. But I think I get a certain idea, also based on your explanations.

What seems to be a consequence for our larger structure is that

- We probably need (just as you did in the examples) a manifest that lists all the files that are relevant in the publication. Or… at least the starting versions; I would expect that it is possible to add new resources to the list held in the SW for caching (ie, if a client discovers new resources then they could be added runtime…). But a model whereby a list is provided as part of the publication is probably the best. This is pretty much what is already happening in EPUB3, nothing surprising there.

- The 'trigger', in your case, is that the index.html file load the page.js file which then starts the process. This means that the publication itself is prepared; I wonder whether there is a different approach that does not require the 'index.html' file to know that it is part of a publication. This is something we will have to discuss at some point among ourselves, but it is a minor issue at this point compared to the overall picture.

Thanks a lot for this!

Ivan


On 31 Oct 2015, at 12:42, Jake Archibald <jakearchibald@google.com<mailto:jakearchibald@google.com>> wrote:

Following our meeting at TPAC, I hacked together an offline-enabled publication format that can be viewed as a regular page, but also downloaded as an archive and viewed in a separate reader site.

https://jakearchibald.github.io/ebook-demo/publisher-site/readme/


Hopefully this demonstrates how service worker can be used for this stuff!

Cheers,
Jake.


----
Ivan Herman, W3C
Digital Publishing Lead
Home: http://www.w3.org/People/Ivan/

mobile: +31-641044153
ORCID ID: http://orcid.org/0000-0003-0782-2704