import maya.cmds as mc

'''
import maya.cmds as mc
mc.scriptJob(kill=77, force=True)

'''

def selectionChanged():
    print 'Script Job Executed!'


# Begin UI -----------------------------------------------------------

def startScriptJob(*args):
    print 'StartJob'
    newJob = mc.scriptJob(event=['SelectionChanged',selectionChanged])
    print 'JOBNUMBER:', newJob

def endScriptJob(*args):
    print 'EndJob'
    mc.scriptJob(kill=newJob, force=True)

def loadHelp(*args):
    pass

def ScriptJobUI():

    # Define new window name
    newWindow = 'SelectEdgeJob'

    # Check to see if the Window exists, Delete Window
    if mc.window(newWindow, query=True, exists=True):
        mc.deleteUI(newWindow)

    # Define window attributes
    mc.window(newWindow, title='SelectEdgeJob', sizeable=True)

    # Create menu bar with help
    menuBarLayout = mc.menuBarLayout()
    helpMenu = mc.menu( label='help', tearOff=False )
    howToHelp = mc.menuItem( label='How to use', command=loadHelp)

    # Main Layout of all menu is a form
    mainFormLayout = mc.formLayout()
    menuSeparator = mc.separator(style='in')
    bottomSeparator = mc.separator(style='in')

    # create button to launch function
    startSelectionButton = mc.button(label='Start Selection', command=startScriptJob)

    # create button to complete function
    endtSelectionButton = mc.button(label='End Selection', command=endScriptJob)

    # Position the controls MainForm
    mc.formLayout(mainFormLayout, edit=True, # attach to the form
                                           attachForm=[(menuSeparator, 'top',3),
                                                       (menuSeparator, 'left',3),
                                                       (menuSeparator, 'right',3),

                                                       (startSelectionButton, 'left',3),
                                                       (endtSelectionButton, 'right',3),

                                                       (bottomSeparator, 'left',3),
                                                       (bottomSeparator, 'right',3),
                                                       (bottomSeparator, 'bottom',5),
                                            ],

                                           # Attach controls to positions
                                           attachPosition=[(startSelectionButton, 'right', 2, 50),
                                                           (endtSelectionButton, 'left', 2, 50),

                                            ],

                                            # Attach controls to other controls
                                            attachControl=[(startSelectionButton, 'top',5,menuSeparator),
                                                           (endtSelectionButton, 'top',5,menuSeparator),

                                            ],
                  )


    mc.showWindow(newWindow)



ScriptJobUI()