I'm in the process of converting the bb10 file plugin to use the exec proxy
rather than clobbering common js. Once that's done, I'll take a look at
adding some additional file system roots.


On Tue, Apr 1, 2014 at 10:24 AM, Ian Clelland <iclell...@chromium.org>wrote:

> On Tue, Apr 1, 2014 at 10:14 AM, Bryan Higgins <br...@bryanhiggins.net
> >wrote:
>
> > +1 to replacing toURL with toNativeURL behaviour
> >
>
> I think that's what I'll do. I'm also adding a "toInternalURL" method --
> not because it's necessarily useful for end users, but because we can use
> it as the single method to construct URLs for transport across the bridge.
>
>
> > For accessing the root file system, what I'd personally like is a ROOT
> > filesystem type for requestFileSystem. If the file-system-roots plugin
> > provides that I think we should definitely pull it in.
> >
>
> It does provide that; although I haven't enabled it by default. I've been
> pretty wary of allowing JavaScript to arbitrarily access *everything* on
> the entire device that is permitted by the OS.
>
>
> >
> > For the camera and media plugins on BB10 we return a full path relative
> to
> > the file system root as the native apps save into default locations. I
> > wonder if there is an opportunity to add additional roots which map to
> > default locations for pictures, music and video (maybe also documents?).
> It
> > seems like that would be super useful for media player apps or
> downloaders.
> >
>
> That's the whole point of the file-system-roots plugin -- on Android, it
> adds things like sdcard, external cache, external persistent files,
> documetns, etc. On iOS, it gives library, documents, cache, bundle, and a
> couple of non-icloud-synced versions of them. I'd love to get a set of
> useful BlackBerry file system roots as well.
>
> Ian
>
> >
> > On Tue, Apr 1, 2014 at 4:50 AM, Anis KADRI <anis.ka...@gmail.com> wrote:
> >
> > > On Tue, Apr 1, 2014 at 3:28 AM, Ian Clelland <iclell...@chromium.org>
> > > wrote:
> > >
> > > > On Mon, Mar 31, 2014 at 4:33 PM, Ian Clelland <
> iclell...@chromium.org
> > > > >wrote:
> > > >
> > > > > On Mon, Mar 31, 2014 at 4:20 PM, Michal Mocny <mmo...@chromium.org
> >
> > > > wrote:
> > > > >
> > > > >> On Mon, Mar 31, 2014 at 3:39 PM, Ian Clelland <
> > iclell...@chromium.org
> > > > >> >wrote:
> > > > >> > This is ugly, though, and is going to get worse over time, and
> > > become
> > > > a
> > > > >> > division between Cordova and any platforms which actually
> > implement
> > > > the
> > > > >> > File API correctly. I'd like to propose switching the behaviour
> of
> > > > >> > .toURL(), to match .toNativeURL -- returning a webview-usable
> URL
> > by
> > > > >> > default -- and implementing some other method or property to get
> > the
> > > > CDV
> > > > >> > URL when it's necessary.
> > > > >> >
> > > > >>
> > > > >> Everything you've said sounds like its all upside to make the
> > switch.
> > > >  So
> > > > >> I'm curious, when would CDV URL be necessary/useful over
> > file/content
> > > > >> urls?
> > > > >>
> > > > >
> > > > > cdvfile:// URLs would still be necessary when dealing with files
> that
> > > > just
> > > > > don't *have* an alternate representation. There currently aren't
> any
> > of
> > > > > those, but we could implement virtual file systems entirely inside
> > of a
> > > > > plugin, and those would require a cdvfile:// URL to be read.
> > > > >
> > > > > I think we'd recommend them when saving URLs to persistent storage,
> > if
> > > > > there is any chance that the actual files could be moved /
> migrated,
> > > and
> > > > we
> > > > > could hide that from the user by giving them a more abstract
> > identifier
> > > > > than one which specifies a physical location.
> > > > > cdvfile://localhost/persistent/my/file.txt might be more durable
> over
> > > > time
> > > > > than file:///data/data/com.company.package/files/my/file.txt,
> perhaps
> > > > > across OS upgrades.
> > > > >
> > > >
> > > > Actually, forget all of that.
> > > >
> > > > Your question had me looking for reasons to advocate users using
> > > cdvfile://
> > > > URLs, when perhaps none exist. The truth of the matter is this: The
> > > cdvfile
> > > > URL has two parts: the filesystem name, and the full path. Those two
> > > parts
> > > > form a consistent internal representation for all of the types of
> file
> > > that
> > > > the plugin can handle, and so all of the internal / native bits of
> the
> > > file
> > > > plugin use them almost exclusively. We make sure that every FileEntry
> > and
> > > > DirectoryEntry has those parts, and we only need to turn them into a
> > URL
> > > > for passing them across the bridge.
> > > >
> > > > One day someone may discover a great reason to use deliberately use
> > > cdvfile
> > > > URLs at the application level; until then, they're available, and we
> > can
> > > > continue to use them internally to simplify the plugin code, enforce
> > the
> > > > sandboxing, and make everything generally more consistent and
> > efficient,
> > > > and users shouldn't need to know or care what the URLs in use
> actually
> > > are.
> > > >
> > >
> > > I agree with this as long as the URLs are useable in the WebView (as
> src
> > > attributes for example). If they're not, I also suggest that we return
> > URLs
> > > that are useable (file:///, content:/// or whatever) by default.
> > >
> > > As for filesystems (temp or persistent), I think most developers will
> use
> > > whatever the default is. BUT they should be able to specify where they
> > want
> > > to store their data if they feel like it without using a third-party
> > > plugin.
> > >
> > >
> > > >
> > > > Ian
> > > >
> > >
> >
>

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