MyCombo.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

#**************************************************************************
#   Copyright (C) 2018, Paul Lutus                                        *
#                                                                         *
#   This program is free software; you can redistribute it and/or modify  *
#   it under the terms of the GNU General Public License as published by  *
#   the Free Software Foundation; either version 2 of the License, or     *
#   (at your option) any later version.                                   *
#                                                                         *
#   This program is distributed in the hope that it will be useful,       *
#   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
#   GNU General Public License for more details.                          *
#                                                                         *
#   You should have received a copy of the GNU General Public License     *
#   along with this program; if not, write to the                         *
#   Free Software Foundation, Inc.,                                       *
#   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
#**************************************************************************

import re
import sys
import os
import time
import struct
import signal
import numpy as np

from PyQt5 import Qt
from PyQt5 import QtCore,QtGui
from PyQt5.QtWidgets import QWidget

class Combo():
  def __init__(self,main,config,control,function,config_name,content = None):
    self.main = main
    self.config = config
    self.control = control
    self.function = function
    self.config_name = config_name
    self.index = 0
    self.inhibit = False
    self.set_content(content)
    self.control.currentIndexChanged.connect(self.set_value)
  
  def enable(self,value):
    self.control.setEnabled(value)
  
  def check_valid_range(self):
    if self.content != None:
      n = len(self.content)-1
      self.index = (self.index,n)[self.index > n]
      
  def set_content(self,content):
    self.inhibit = True
    self.control.clear()
    self.content = content
    if content != None:
      self.control.addItems(content)
      self.check_valid_range()
    self.inhibit = False
    self.process_index()
    
  def process_index(self,index = None):
    if index == None:
      self.index = self.config[self.config_name]
    else:
      self.config[self.config_name] = index
      self.index = index
    self.check_valid_range()
    self.inhibit = True
    self.control.setCurrentIndex(self.index)
    self.inhibit = False
  
  def get_index(self):
    return self.index
        
  def get_value(self,index = None):
    self.process_index(index)
    if self.content == None:
      v = 0
    else:
      v = self.content[self.index]
    try:
      v = int(v)
    except:
      None
    return v
    
  def set_value(self,index = None):
    if not self.inhibit:
      self.process_index(index)
      if self.content != None:
        if len(self.content) > 0:
          a = self.index
          b = self.content[self.index]
          self.function(a,b)