# to use the functionality in this file, import it into a .jy script using
#
#  execfile('LibInterac.jy')
#
# at or near the top of the .jy script in question.


# To-Do:
#
# - find a way to set the length of the label via some sort of call from the
#   main program.
#
# - turn the whole thing into a class, or somesuch...?
#


from javax.swing import JPanel, JButton, JDialog, JCheckBox, JLabel, SwingConstants, BorderFactory
from java.awt import BorderLayout, GridLayout


# set up interactivity.

def contAction(evt):
   contAction.pause = False
   return contAction.pause


def quitAction(evt):
   quitAction.stop = True
   return quitAction.stop


def Interact_SetLabel(Str):
   Interact_Init.textLabel.setText(Str)
   return True


def Interact_ContinueAfterInput():
   contAction.pause = True
   Interact_Init.contBut.setEnabled(True)
   Interact_Init.quitBut.setEnabled(True)
   Interact_Init.textLabel.setText('Modify plot, if desired.')
   while (contAction.pause and Interact_Init.pauseCheckBox.selected and not quitAction.stop):
      sleep(100)

   # interrupt execution if requested.
   if quitAction.stop:

      # should put a confirmation pop-up here, so as to not accidentally quit...

      return False

   Interact_Init.contBut.setEnabled(False)
   Interact_Init.quitBut.setEnabled(False)
   Interact_Init.textLabel.setText('Processing...')

   return True


def Interact_CleanUp():
   Interact_Init.dia.dispose()

# initialize the interactivity dialog.
#   winLen - number of characters of the message display box will hold.
def Interact_Init(winLen):

   quitAction.stop = False

   Interact_Init.pauseCheckBox = JCheckBox('Pause for each event')
   Interact_Init.pauseCheckBox.selected = True

   Interact_Init.contBut = JButton('Continue', actionPerformed=contAction)
   Interact_Init.quitBut = JButton('Quit', actionPerformed=quitAction)

   # initialize the label with a blank string of length winLen, so the
   # panel/dialog size will be set appropriately. Using 'o' as it is a
   # reasonably average width character in the default proportional font.
   Interact_Init.textLabel = JLabel('o' * winLen, SwingConstants.CENTER)
   Interact_Init.textLabel.setBorder(BorderFactory.createCompoundBorder(BorderFactory.createEmptyBorder(0, 0, 10, 0), \
                                                       BorderFactory.createLineBorder(Color.black)))
   checkPanel = JPanel(BorderLayout())
   checkPanel.add(Interact_Init.pauseCheckBox, BorderLayout.EAST)

   butPanel = JPanel(BorderLayout())
   butPanel.add(Interact_Init.contBut, BorderLayout.WEST)
   butPanel.add(Interact_Init.quitBut, BorderLayout.EAST)

   panel = JPanel(GridLayout(3, 1, 10, 10))
   panel.add(Interact_Init.textLabel)
   panel.add(checkPanel)
   panel.add(butPanel)
   panel.setBorder(BorderFactory.createEmptyBorder(15, 15, 15, 15))

   Interact_Init.dia = JDialog()
   Interact_Init.dia.setContentPane(panel)
   Interact_Init.dia.pack()
   Interact_Init.dia.setVisible(True)

   # set state for when script is executing.
   Interact_Init.textLabel.setText('Processing...')
   Interact_Init.contBut.setEnabled(False)
   Interact_Init.quitBut.setEnabled(False)