Detect foreground window in ChromeOS

[Jian Huang]

Hi,

Is it possible to know the information of foreground window in ChromeOS? Just like in linux/mac, we can do this by using xdotool.

Thanks.

[Scott Violet]

Can you elaborate on where you want to do this from? Modifying chrome
code? Extension?

-Scott

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[Jian Huang]

Well, modifying chrome will be the last thing I want to do. 

Primarily I just want to know the title of the foreground window or the process name which the foreground window associated with in system-wide via extension/app/native client, which means my  extension/app/NaCl will run in background, it can detect any foreground window which maybe associate with other extension/app/NaCl. Just like I can do this in windows program when can call the GetForegroundWindow API.

Thank you.

Best Regards,

Huang Jian

[Trent Apted]

The chrome.windows.getAll extension API function [1] provides an array of `Window` which includes a `focused` property[2]. You can get the tabs browser windows, where you'll find url/title.

Some windows will be left out, but it doesn't amount to much that is interesting on ChromeOS (menus, notifications, ..).

You can typically get more help for chrome extensions on StackOverflow, but the documentation and sample code is pretty good too.

[1] https://developer.chrome.com/extensions/windows#method-getAll

[2] https://developer.chrome.com/extensions/windows#property-Window-focused

[Jian Huang]

Thank you Trent for your quick reply.

Could you please take a look at this http://stackoverflow.com/questions/38428007/how-can-i-identify-the-foreground-app-on-chrome-os,

As the thread described, 

• chrome.windows and chrome.tabs can only enumerate browser windows/tabs (not other apps).

That's why I highlight system-wide,

Thank you

Best Regards,

Huang Jian