chrome.windows.onFocusChanged not working

[Rajesh Katalkar]

i am using chrome.windows.onFocusChanged event to detect focus change event...It work well when focus is changed between windows..
but i don't get any event when i minimize and maximize the browser once it has some page loaded....
I need to do some clean on minimize event..

steps to repro
I have a extension which alerts on this event..

OS: win7 64bit (not tested other OS)

steps to repro
1)make sure no windows are on desktop only plain desktop..you can do show desktop for that
2)open browser...which will have empty new tab..
3)minimize the browser ...will get alert
4)maximize it ....will get alert
5)load some page...
3)minimize the browser ...no alert
4)maximize it ....no alert

[Rajesh Katalkar]

more updates on the steps

steps to repro
1)make sure no windows are on desktop only plain desktop..you can do show desktop for that
2)open browser...which will have empty new tab..
3)minimize the browser ...will get alert
4)maximize it ....will get alert
5)load some page...

6)minimize the browser by click minimize button from top right corner...no alert
7)maximize it  from task bar....no alert

===>if on step 6 we minimize and maximize by clicking taskbar icon then alerts work.

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[Rajesh Katalkar]

No one seems to respond...This bug needs to be fixed...But for now i have made my own custom focuschange event using chromeapi's and blur and focus events of page and other can use it also....
The idea is we inject a js in every frame at document start which will send focus and blur events, so that we don't get focus event at first as we already are in focus....Because i inject my other working js in document end....Then we process it in background js and use chrome api's to decide focus or not focus....
Below is the code for this.

put following on background js file
===============================
function ChromeWindow(list)
{
  this.focusedwindow = null;
  this.Event = Event;
  this.FocusEvtListner = list;
 
  function Event(tab,request)
  {
     if(request == undefined || tab == undefined)
       return;
   
  
     if(request.command == "winevent")
     {         
       console.log(request.state+" domain="+request.domain);
       chrome.windows.get(tab.windowId ,winget.bind(this));
       function winget(win)
       {
           if(win == undefined || win == null)
             return;
             
           if(this.focusedwindow == null)
           {
            this.focusedwindow = win;
            if(tab.status == "complete")
              this.FocusEvtListner(win,tab);
           }
           else if(this.focusedwindow.id!=win.id || this.focusedwindow.focused!=win.focused)   
           {
             console.log("diff chrome win or state changed");      
             this.focusedwindow = win;
             if(tab.status == "complete")             
               this.FocusEvtListner(win,tab);
           }
           else
            console.log("same chrome win");      
           
           console.log("chrome  winid="+win.id +" state ="+win.state +" focused="+win.focused );
       }
     }
  }
}

_ChromeWindow = new ChromeWindow(OnFocusEvt);

function OnFocusEvt(win,tab)
{   
  console.log("\n\nOnFocusEvt start");
  if(win.focused)
    console.log("focused");
  else
    console.log("not focused");
   
  console.log("OnFocusEvt  winid="+win.id +" state ="+win.state +" focused="+win.focused +" tab.status="+tab.status);
  console.log("OnFocusEvt taburl ="+tab.url);
}

chrome.runtime.onMessage.addListener(OnRequest);

function OnRequest(request, sender, sendResponse)
{
   consolelog(sender.tab ?
   "from a content script:" + sender.tab.url :
   "from the extension");
     
     _ChromeWindow.Event(sender.tab,request);
    return;
}
=============================================================
another content script ...injected at document start

focusevt.js

{
      "matches": ["<all_urls>"],
      "js": ["focusevt.js"],
      "run_at" : "document_start",  
      "all_frames": true     
    }

window.onblur = function()
{
 chrome.runtime.sendMessage({command:"winevent",state:"blur",domain:document.domain});
}

window.onfocus = function()
{
  chrome.runtime.sendMessage({command:"winevent",state:"focus",domain:document.domain});

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[Giedrius Drulia]

There is a bug, but I found that window property focused actually tells truth about current state of the window, so you can query in intervals getCurrent window and check its property focused, if window is not in focus, it means that chrome is not in focus itself.

Hopefully this helps.