# for switching tabs via HAL buttons in GladeVCP panel

from subprocess import Popen, PIPE
scanNumber = 0

def user_live_update():

    global scanNumber


    #note: with the following three lines in here, AXIS hangs at the point of trying to select a certain tab

    if Popen('halcmd getp fff.tab-trigger',stdout=PIPE,shell=True).communicate()[0].strip() == 'TRUE':
                    root_window.tk.call('.pane.top.right','raise','preview')
                    Popen('halcmd setp file.tab-trigger false',stdout=PIPE,shell=True)

    try:

        happy = hal.component_exists('gladevcp')

        if happy:

            if scanNumber == 0:

                if Popen('halcmd getp gladevcp.backplot',stdout=PIPE,shell=True).communicate()[0].strip() == 'TRUE':
                    root_window.tk.call('.pane.top.right','raise','preview')

                if Popen('halcmd getp gladevcp.probe',stdout=PIPE,shell=True).communicate()[0].strip() == 'TRUE':
                    root_window.tk.call('.pane.top.right','raise','user_0')

                if Popen('halcmd getp gladevcp.toolchange',stdout=PIPE,shell=True).communicate()[0].strip() == 'TRUE':
                    root_window.tk.call('.pane.top.right','raise','user_1')

                scanNumber = 1

            else:

                if Popen('halcmd getp gladevcp.file',stdout=PIPE,shell=True).communicate()[0].strip() == 'TRUE':
                    root_window.tk.call('.pane.top.right','raise','user_2')

                scanNumber = 0

    except Exception:

        traceback.print_exc()


#remove "do you really want to exit?"
root_window.tk.call("wm","protocol",".","WM_DELETE_WINDOW","destroy .")

#start fullscreen

root_window.tk.call("wm","geometry",".","1920x1000")


#root_window.attributes("-fullscreen",1)