JMRI_shuffle.py

#
# Author: Ryan Blundon, copyright 2013
#
#------
# Track Arrangement
#
# ---Track 4 (Sensor 787)----|-(TO2)\
# ---Track 3 (Sensor 786)----|--------(TO1)/---|-----Track 6 (Sensor 789)-----
# ---Track 2 (Sensor 785)----|-------(TO3)/
# ---Track 1 (Sensor 784)----|-----------
#
# Yard Throat is Sensor 788

import jarray
import jmri
from time import sleep
import java
import javax.swing

#------
# The Variables
#------

sensorList = ['NS784','NS785','NS786','NS787','NS789']

#------
# The Classes
#------

# Define the sensor listener: Print some
# information on the status change.

#class SensorListener(java.beans.PropertyChangeListener):
#  def propertyChange(self, event):
#    if (event.propertyName == "KnownState") :
#        mesg = "Sensor "+event.source.systemName
#        if (event.source.userName != None) :
#            mesg += " ("+event.source.userName+")"
#        mesg += " from "+stateName(event.oldValue)
#        mesg += " to "+stateName(event.newValue)
#        print mesg
        # You can also speak the message by un-commenting the next line
        #java.lang.Runtime.getRuntime().exec(["speak", mesg])
        # For more info on the speak command, see http://espeak.sf.net/
#    return

# Define a Manager listener.  When invoked, a new
# item has been added, so go through the list of items removing the 
# old listener and adding a new one (works for both already registered
# and new sensors)

#class ManagerListener(java.beans.PropertyChangeListener):
#  def propertyChange(self, event):
#    list = event.source.getSystemNameList()
#    for i in range(list.size()) :
#        event.source.getSensor(list.get(i)).removePropertyChangeListener(listener)
#        event.source.getSensor(list.get(i)).addPropertyChangeListener(listener)

#------
# The Definitions
#------

# Define routine to map status numbers to text
#def stateName(state) :
#    if (state == ACTIVE) :
#        return "ACTIVE"
#    if (state == INACTIVE) :
#        return "INACTIVE"
#    if (state == INCONSISTENT) :
#        return "INCONSISTENT"
#    if (state == UNKNOWN) :
#        return "UNKNOWN"
#    return "(invalid)"

def currentSensorState(x):
	# Sensor return codes: 2 = ACITVE; 4 = INACTIVE
	return sensors.getSensor(x).getKnownState()
	
def getLocoInfo(s):
	# create a frame to hold the button, set up for nice layout
	f = javax.swing.JFrame(s)       # argument is the frames title
	f.contentPane.setLayout(javax.swing.BoxLayout(f.contentPane, javax.swing.BoxLayout.Y_AXIS))

	# keep track of whether both fields have been changed
	addressChanged = False    # True means the field has changed
	commandChanged = False

	# Create the first text field
	# Sized to show 5 characters, initially empty
	# To make the field a different size, change the (5) to the desired size
	address = javax.swing.JTextField(5)

	# put the text field on a line preceded by a label
	temppanel1 = javax.swing.JPanel()
	temppanel1.add(javax.swing.JLabel("Address"))
	temppanel1.add(address)

	# create the second text field similarly
	radioBtn1 = javax.swing.JRadioButton("East")
	radioBtn2 = javax.swing.JRadioButton("West")
	
	temppanel2 = javax.swing.JPanel()
	temppanel2.add(javax.swing.JLabel("Direction"))
	temppanel2.add(radioBtn1)
	temppanel2.add(radioBtn2)
	#rbBtnGroup = ButtonGroup()
	#rbBtnGroup.add(radioBtn1)
	#rbBtnGroup.add(radioBtn2)

#	# have that text field enable the button when OK
#	def whenAddressChanged(event) :                
#		global addressChanged, commandChanged
#    	if (address.text != "") :                  # address only changed if a value was entered
#    		addressChanged = True
#		if (commandChanged and addressChanged) :   # if both have been changed
#			enterButton.setEnabled(True)
#		return
    
#	address.actionPerformed = whenAddressChanged   # if user hit return or enter
#	address.focusLost = whenAddressChanged         # if user tabs away

	# have that 2nd text field enable the button when OK also
#	def whenCommandChanged(event) :
#		global addressChanged, commandChanged
#		if (command.text != "") :
#			commandChanged = True
#		if (commandChanged and addressChanged) :
#			enterButton.setEnabled(True)
#		return
    
	#command.actionPerformed = whenCommandChanged
	#command.focusLost = whenCommandChanged

	# create the button
	enterButton = javax.swing.JButton("Enter values")
	enterButton.setEnabled(True)           # button starts as grayed out (disabled)

	# define what button does when clicked and attach that routine to the button
	def whenMyButtonClicked(event) :
		if radioBtn1.isSelected():
			statusText = "Radio Button 1 is selected "
		if self.radioBtn2.isSelected():
			statusText = statusText + "Radio Button 2 is selected "
		myaddr = address.text
		#mycmd = command.text
		print "clicked with address: ", address.text#, " command: ", command.text
		#print myaddr, mycmd
		f.dispose()
		return
        
	enterButton.actionPerformed = whenMyButtonClicked

	# Put contents in frame and display
	f.contentPane.add(temppanel1)
	f.contentPane.add(temppanel2)
	f.contentPane.add(enterButton)
	f.pack()
	f.show()

#------
# The Program
#------

# First, check to make sure that the Yard Throat is clear
#while (currentSensorState('NS788') != 4):
#	print "Yard throat not CLEAR, Sleeping for 5 seconds."
#	sleep(5)
	
# Read Sensors
    
for i in sensorList:
	if (currentSensorState(i) == 2):
		print "Sensor ", i, " ACTIVE, prompting for locomotive address and direction."
		getLocoInfo(i)
	#print i, currentSensorState(i)
	
#listener = SensorListener()

# Attach the sensor manager listener
#sensors.addPropertyChangeListener(ManagerListener())

# For the sensors that exist, attach a sensor listener
#list = sensors.getSystemNameList()

#    sensors.getSensor(list.get(i)).addPropertyChangeListener(listener)