Monday, May 31, 2010

Re: Persisting web pages locally

Well this is the idea behind Google Gears, allowing you to locally
persist data in a little lightweight db. Normal js won't allow this
due to the myriad security issues; with gears the user installs it and
allows client side code to access it. But the status of gears going
forward is a little unclear, for instance I haven't seen some major
issues that cause browsers to hang being addressed.. However the GWT-
gears lib is up to date:

On May 31, 2:46 am, bcw <> wrote:
> The usual model is a source serving pages, and the source persists the
> data in various ways.
> I am writing a note-taking (and other uses) application using GWT.
> Properly, a lot of the smarts will reside on the server, but I must
> make choices about persisting the information the user enters.  The
> primary entry is by handwriting.
> It would be useful if the user could save in a format that displays
> the writing even when opened on a machine that does not have the smart
> server, keeping the notes visible, and embedded in an HTML document.
> I am already experimenting with rendering the writing with PNG
> images.  I'm expecting to save the handwriting data as InkML, and
> there may be other related information (such as the interpreted text).
> Are there any approaches using GWT to allow me to save PNG images
> along with a local copy of a page, so it's readable without the server
> to interpret it?  I would need to fetch the images from the server and
> them write it all locally.  I could have the server do this while
> connected, or the browser (if that's practical), but I would like a
> one-file format that could be opened in the browser on another machine
> and show the writing/PNG.
> Later I'm thinking of other content as well, so general pointers would
> be helpful.
> Thanks for any ideas,
> bcw

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