windows 7 - Google Chrome has taken over all HTML handling...

How can I use Autohotkey to focus on an existing Google Chrome tab, not a "container" window?

Details

Google Chrome seems to represent each window with a container window handle, which contains one or more tabs. The tabs (at least the current one), has its own window handle. The tab window handles have window titles (which currently all end in " - Google Chrome"), whereas the container window handle itself does not. The following autohotkey code does not work as intended for Google Chrome:

^+i::
if WinExist("ahk_class Chrome_WidgetWin_0")
    WinActivate
else
    Run "C:\Users\vleeshue\AppData\Local\Google\Chrome\Application\chrome.exe"
return

This binding will focus on a Google Chrome window if it exists or will run Google Chrome. However, it will often target the container window (in Window Spy, the window title is blank). Activating the container window disallows the use of Google Chrome keyboard shortcuts. The inaccessible keyboard shortcuts include the all important ctrl+l to access the omnibar. Since I have not yet found a way to consistently activate the tab window instead of the container window, my workaround is to use the mouse, but I'd prefer to avoid that if possible.

Window Spy Screenshots

Background

Current Google Chrome Version: 5.0.317.2 dev

A common autohotkey binding I use is a keyboard shortcut to focus a specific application if it's already running or to run the application if it isn't running.

For example, I use this for foobar2000

^+m::
If WinExist("foobar2000")
    WinActivate
else
    Run "C:\Program Files (x86)\foobar2000\foobar2000.exe"
return

^+i::
if WinExist("ahk_class Chrome_WindowImpl_0")
  {
  WinActivate
  ControlFocus, Chrome_AutocompleteEditView1
  }
else
  Run "C:\Users\vleeshue\AppData\Local\Google\Chrome\Application\chrome.exe"
return

Should do the trick

("Chrome_AutocompleteEditView1" is the name of the omnibar control, so you could add Send ^a to select all)

Update: I can't reproduce, maybe it will be better with another control... To have a list of a window controls I use this code:

#Persistent
SetTimer, WatchCursor, 100
return

WatchCursor:
  MouseGetPos, , , id, control
  WinGetTitle, title, ahk_id %id%
  WinGetClass, class, ahk_id %id%
  WinGet, ControlList, ControlList, A
  ToolTip, Under Cursor:`nahk_id: %id%`nahk_class: %class%`nTitle:%title%`nControl: %control%`n`nWindow Control List:`n%ControlList%
return

So the controls of my google chrome 4.0.249.78 beta (36714) are:

• ViewsTextfieldEdit1
• Chrome_RenderWidgetHostWND1
• Chrome_AutocompleteEditView1
• Chrome_WindowImpl_01
• Chrome_WindowImpl_02

Workaround using Alt+Tab:

; Activates the window identified with wintitle if it's active,
; else opens a new one
OpenWindow(wintitle, runCommand)
{
    if WinExist(wintitle)
        WinActivate ; activates the window found above. Sweet.
    else
        Run %runCommand%
}

#g::
AppsKey & g::
    prevKeyDelay := A_KeyDelay
    SetKeyDelay, 100
    OpenWindow("ahk_class Chrome_WidgetWin_0", A_AppData
                . "\Local\Google\Chrome\Application\chrome.exe")
    SendEvent {Alt down}{Tab}
    SendEvent +{Tab}
    SendEvent {Alt up}
    SetKeyDelay, prevKeyDelay
return

Adjust arguments as needed. SetKeyDelay used because sending too fast does not work.

You may want to look at using a Chrome extension instead of AutoHotkey. Extensions can get access to all the open tabs, including the URL and the ability to change tab focus. Otherwise you probably would need to use the Accessibility features in Chrome to query the active window. I believe that is how programs like RescueTime track what the active URL is. For example, using the Accessible Event Watcher (AccEvent) from the Windows 7 SDK shows the following events when changing tabs in Chrome:

Window Spy returns the tab title in the "Visible Window Text" field.

You could loop in the tabs until you find the desired text. To switch from tab to tab, send the CTRL+TAB keys. The problem would be to stop at some point but if you know you don't use more than X tabs at most, you can include a counter in the loop to break at some point if the desired tab is not found.

There seems to be a bug with the WinActivate function in AutoHotkey. (http://productivegeek.com/forums/topic/autohotkey-problem-restoring-minimized-window-and-giving-keyboard-focus)

So instead of the WinActivate line, use

WinGet, winid, ID, 
DllCall("SwitchToThisWindow", "UInt", winid, "UInt", 1)

!f::
    IfWinExist ahk_class Chrome_WidgetWin_0
    {   IfWinActive ahk_class Chrome_WidgetWin_0
        {   Loop, 60
            {   GetKeyState, state, C
                if state = D
                {   KeyWait, c

                    KeyWait, LAlt
                    Sleep 10

                    ;must send RCtrl!!!
                    Send {RCtrl down}
                    Send {w down}
                    Sleep 10
                    Send {w up}
                    Send {RCtrl up}

                    break
                }
                Sleep 1
            }

        }

        else
        {   KeyWait,f
            KeyWait,LAlt
            ;don't hijack other apps
            Send f
        }
    }

    return