@@bidi_dir issue

[Chrome786]

Hi,

 

I am trying to find the layout of the chrome browser in my extension e.g. English or Arabic version Chrome has been installed on a machine?

 

I want to change the layout of my extension LTR or RTL depending upon the Chrome layout.

 

Fot initial testing purpose, I wrote following code but seems like it doesn't work.

 

chrome.browserAction.onClicked.addListener(function(tab) {
            if(chrome.i18n.getMessage("@@bidi_dir") == "ltr")
                alert("ltr");
            else if(chrome.i18n.getMessage("@@bidi_dir") == "rtl")
                alert("rtl");
        });

 

I don't see any alert when I click on the browser action button.

 

Thanks,

-Syed

[Mohamed Mansour]

Hi Chrome0786,

That code snippet seems right, but here are some comments:

1. Make sure you place that code in your background page.
2. Make sure you don't define a popup.html in your manifest file, because you cannot use onClick and popup at the same time.

Kind regards,
Mohamed Mansour

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[PhistucK]

I went to some extension that has a background page and executed that code within the console of the background page - it returns an empty string.

☆PhistucK

[Chrome786]

@Mohamed: Yes, Its in background.html and there is no popup.html in manifest file.

@PhistucK: Yes, it returns an empty string.

 

is there any other way to get the LTR or RTL layout of the browser?

 

Thanks,

-Syed

[Abraham Williams]

chrome.i18n.getMessage("@@bidi_dir") only seems to be available if you have "default_locale" set in your manifest.

Abraham
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[Mohamed Mansour]

Weird, I did the same thing but within a Popup page Inspector (when I replied) and it returned the correct string. 

Must be a bug for background pages then because I just did it from the background page and it was indeed an empty string. I have filled the following bug:

http://code.google.com/p/chromium/issues/detail?id=69700

Thank you, star that issue if you would like to get updates!

Another way to do LTR and RTL layout, is directly within the CSS:

body {

 direction: __MSG_@@bidi_dir__;

}

The bidi messages work on other extension pages like popup, and custom ones. So you can still use that approach.

Kind regards,
Mohamed Mansour

[Mohamed Mansour]

Abraham is correct. The docs even specify:

Important: If an extension has a _locales directory, the manifest must define "default_locale".

But it worth noting in the documentation side. Maybe we will add more docs regarding the usage of those predefined messages.

Kind regards,
Mohamed Mansour

[Chrome786]

Thank you!!!

 

But my extension doesn't have a "_locales" directory right now and I want to find out the layout LTR/RTL?
if I add "default_locale": "en" in my extesnion, I still get empty string.

if I add "default_locale": ", again I got the empty string back by using                             chrome.i18n.getMessage("@@bidi_d);

 

Thanks again!