Question about chrome.extension.connect()

[Robert Dailey]

Will connections work from scripts that are not content scripts? For example, in my background.html page, I have a script included... common.js. From common.js, I would like to use chrome.extension.connect() to send messages to the script embedded in background.html. Inside of background.html I do this (within script tags):

chrome.extension.onConnect.addListener( function( port )

{

if( port.name == 'action_channel' ) {

port.onMessage.addListener( onRequest );

}

});

If I call chrome.extension.connect right below that, my onConnect callback is not triggered. Nor is it triggered if I connect from common.js. What am I doing wrong?

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Robert Dailey

[Boris Smus]

If you have a chrome.extension.onConnect listener in your background page, You should be running chrome.extension.connect from the content script. There's a sample available that does what you're trying to do: http://src.chromium.org/viewvc/chrome/trunk/src/chrome/common/extensions/docs/examples/extensions/email_this_page/. 

- Boris

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[Robert Dailey]

I'm trying to do my chrome.extension.connect() from a script that is NOT a content script. I was hoping it could be used when my extension has no content pages at all.

Can this be done?

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Robert Dailey

[Robert Dailey]

Could I please get a response on this? I'm roadblocked until I can figure out if I need to fix a bug in what I'm doing or possibly find a different approach.

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Robert Dailey

[Ben]

As far as I know, it's not possible. You can inject a script into a
page, using methods that I haven't explored[0], and may be able to use
connect() from there...but any script running within the context of the
page will not have access to any chrome extension APIs.

[0]http://code.google.com/chrome/extensions/content_scripts.html#pi

[Abraham Williams]

With the assumption that you you are trying to use chrome.extension.connect from a script loaded in your background.html to trigger an event in your background.html that would typically be triggered by a message from a content_script. You should just call the function directly instead of trying to use chrome.extension.connect. All of the scripts loaded in the background.html are in the same sandbox environment.

Abraham
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Abraham Williams | InboxQ | abrah.am

@abraham | github.com/abraham | blog.abrah.am
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