Re: navigator.requestMIDIAccess() not defined in Chrome extensions

Hi all,

Thanks Doug, but as I said, for some reason wampserver doesn't install 
properly here. It simply doesn't open when I double click its icon.

Okay,  so now I've got XAMPP up and running. I had to change some ports 
to avoid conflicts with IIS7, but that's all out of the way and its 
working properly.

But I still have a problem.
When I run
file:///C:/xampp/htdocs/localAssistantPerformer/assistantPerformer.html 
<cid:part1.07020703.04080408@netcologne.de>
I can embed files such as
file:///C:/xampp/htdocs/localAssistantPerformer/scores/score1Page1.svg 
<cid:part1.07020703.04080408@netcologne.de>
okay (That didn't work locally before.),  but I can't call 
getSVGDocument() on the embedded page to get at its content. I get the 
following error message:
> Blocked a frame with origin "null" from accessing a frame with origin 
> "null". Protocols, domains, and ports must match.

Where do I go from here? Chrome extensions don't (currently?) work either...

I'm investigating further, but maybe someone out there can help.

All the best,
James



On 20.11.2013 19:43, Douglas Gore wrote:
> I do all my WebAudio development using wampserver, if you want to 
> change the port just left click the W icon in the system tray then go 
> to Apache -> httpd.conf and add this line to put the server on port 8080:
>
> Listen 8080
>
> Save and use the "Restart all services" option and you are good to go :-)
>
> Doug
>
>
>
> On 20 November 2013 18:28, Chris Wilson <cwilso@google.com 
> <mailto:cwilso@google.com>> wrote:
>
>     Of course - you'll just have to put it on a different port, e.g.
>     localhost:8080.
>
>     On Nov 20, 2013 10:26 AM, "James Ingram" <j.ingram@netcologne.de
>     <mailto:j.ingram@netcologne.de>> wrote:
>
>         Hi Charlie, Chris,
>
>         Thanks for the quick replies!
>         I tried installing  a local web server (wampserver) this
>         afternoon, but localhost is already occupied by IIS7 (I also
>         have Visual Studio installed) and I got an error. I don't know
>         how to upload files to IIS7 manually, and have not been able
>         to find out if that's possible at all. I don't really want to
>         mess with IIS7 in case I corrupt Visual Studio.
>
>         Is it, in principle, possible to install a second localhost
>         server on Windows 7? (I don't know much about configuring
>         servers, and the web seems full of outdated information...) If
>         so, I'll have another go.
>
>         All the best,
>         James
>
>         p.s. I'd still like to see navigator.requestMIDIAccess()
>         defined inside chrome extensions. :-)
>
>
>
>         On 20.11.2013 18:14, Charlie Roberts wrote:
>>         Or (much easier) run a web server on your computer and then
>>         load the files via http from there... perhaps I'm not
>>         understanding the question correctly though.
>>
>>
>>         On Wed, Nov 20, 2013 at 9:11 AM, Charlie Roberts
>>         <bigbadotis@gmail.com <mailto:bigbadotis@gmail.com>> wrote:
>>
>>             This doesn't exactly answer your question, but as a
>>             workaround perhaps you could use the cache manifest?
>>
>>             http://www.html5rocks.com/en/tutorials/appcache/beginner/
>>
>>             It has worked well for me when performing, although I
>>             haven't been using MIDI.
>>
>>             - Charlie
>>
>>
>>             On Wed, Nov 20, 2013 at 5:26 AM, James Ingram
>>             <j.ingram@netcologne.de <mailto:j.ingram@netcologne.de>>
>>             wrote:
>>
>>                 Hi,
>>
>>                 I'm trying to make a version of my application [1]
>>                 which will work offline.
>>
>>                 This is important, because I want to use it during
>>                 live performances, and can't rely on the internet
>>                 being available at all venues.
>>
>>                 So I need to work with local files.
>>
>>                 As far as I can see, the only way to load local files
>>                 into a web page in Chrome is to deliver them inside a
>>                 Chrome extension.
>>
>>                 But Chrome extensions can't share variables (e.g.
>>                 midiAccess) with the JS on the main page, so I need
>>                 to call navigator.requestMIDIAccess() inside the
>>                 extension.
>>
>>                 But navigator.requestMIDIAccess() isn't defined
>>                 there, so I'm stuck.
>>
>>                 I see no reason why navigator.requestMIDIAccess()
>>                 shouldn't be defined inside an extension. There's no
>>                 more security risk accessing midi devices there than
>>                 anywhere else. Maybe it's just an oversight?
>>
>>                 Any ideas?
>>
>>                 All the best,
>>                 James
>>
>>                 [1]
>>                 http://james-ingram-act-two.de/open-source/assistantPerformer/assistantPerformer.html
>>
>>
>>
>>
>
>
>         -- 
>
>         http://james-ingram-act-two.de/
>
>


-- 

http://james-ingram-act-two.de/

Received on Thursday, 21 November 2013 12:06:57 UTC