main.py

# -*. coding: utf-8 -*-
# Copyright (c) 2015 CNRS and University of Strasbourg
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# 
#   http://www.apache.org/licenses/LICENSE-2.0
# 
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License
"""
main.py
=========

Contain Screen, Popup and App related to kivy.
It's link to the manager.kv file

"""

#kivy and system import
import kivy
kivy.require('1.9.0')

from kivy.app import App
from kivy.lang import Builder
from kivy.properties import ObjectProperty
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.scrollview import ScrollView
from kivy.uix.gridlayout import GridLayout
from kivy.uix.button import Button
from kivy.uix.label import Label
from kivy.uix.popup import Popup
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.uix.textinput import TextInput
from kivy.uix.spinner import Spinner
from kivy.core.window import Window
#project import
from store import get_store, create_store
from capillary import Capillary
from base import *

#when the keyboard is open resize the window
Window.softinput_mode = 'resize'

__version__ = '0.1.3'

class CEToolBoxPopup(Popup):
    """ Popup use to be herited by all Popup of the app"""
    pass

class ErrorPopup(CEToolBoxPopup):
    """ Popup to show in case of erreur """

    def show_popup(self, data):
        """ feel the popup with the error message present in data
        @param data: dictionnary with the error type (should be 
        always 1 for this kind of popup) and the error message
        @type data: {str: int, str: str}
        """
        message = add_color(data["errtext"], "FF0000")
        self.ids.errormessage.text = message
        self.open()

class ViscosityPopup(CEToolBoxPopup):
    """Popup to show the Viscosity result """

    def show_popup(self, data):
        """ get and show the viscosity result from the store """
        store = get_store()
        self.ids.inlayout.rows = 1
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color("Viscosity :", "FFFFFF")))
        value = round(store.get('Viscosity')["value"], 2)
        viscotext = str(value)+" "+store.get('Viscosity')["unit"]
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color(viscotext, "FFFFFF")))
        self.open()

class InjectionPopup(CEToolBoxPopup):
    """Popup to show the Injection result """

    def show_popup(self, data):
        """ get and show injections results from the store.
        Can add an error message from data.
        @param data: dictionnary with the error type (should be 
        always 0 (no error) or 2 for this kind of popup) and the error message
        @type data: {str: int, str: str}
        """
        store = get_store()
        if data["errcode"] == 2:
            self.ids.inlayout.rows = 12
        else:
            self.ids.inlayout.rows = 11
        #if there is an error to print
        if data["errcode"] == 2:
            self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color("Warning :", "FF0000")))
            self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color(data["errtext"], "FF0000")))
        #Hydrodynamic injection
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color("Hydrodynamic injection :", "FFFFFF")))
        value = round(store.get('Hydrodynamicinjection')["value"], 2)
        value = str(value)+" "+store.get('Hydrodynamicinjection')["unit"]
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color(value, "FFFFFF")))
        #Capillary volume
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color("Capillary volume :", "BFBFBF")))
        value = round(store.get('Capillaryvolume')["value"], 2)
        value = str(value)+" "+store.get('Capillaryvolume')["unit"]
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color(value, "BFBFBF")))
        #Capillary volume to window
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color("Capillary volume to window :", "FFFFFF")))
        value = round(store.get('Capillaryvolumetowin')["value"], 2)
        value = str(value)+" "+store.get('Capillaryvolumetowin')["unit"]
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color(value, "FFFFFF")))
        #Injection plug length
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color("Injection plug length :", "BFBFBF")))
        value = round(store.get('Injectionpluglen')["value"], 2)
        value = str(value)+" "+store.get('Injectionpluglen')["unit"]
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color(value, "BFBFBF")))
        #Plug (% of total length)
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color("Plug (% of total length) :", "FFFFFF")))
        value = round(store.get('Pluglenpertotallen')["value"], 2)
        value = str(value)+" "+store.get('Pluglenpertotallen')["unit"]
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color(value, "FFFFFF")))
        #Plug (% of length to window)
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color("Plug (% of length to window) :", "BFBFBF")))
        value = round(store.get('Pluglenperlentowin')["value"], 2)
        value = str(value)+" "+store.get('Pluglenperlentowin')["unit"]
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color(value, "BFBFBF")))
        #Injected analyte 
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color("Injected analyte :", "FFFFFF")))
        value = round(store.get('Injectedanalyteng')["value"], 2)
        value = str(value)+" "+store.get('Injectedanalyteng')["unit"]
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color(value, "FFFFFF")))
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=""))
        value = round(store.get('Injectedanalytepmol')["value"], 2)
        value = str(value)+" "+store.get('Injectedanalytepmol')["unit"]
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color(value, "FFFFFF")))
        #Injection pressure
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color("Injection pressure :", "BFBFBF")))
        value = round(store.get('Injectionpressure')["value"], 2)
        value = str(value)+" "+store.get('Injectionpressure')["unit"]
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color(value, "BFBFBF")))
        #Flow rate
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color("Flow rate :", "FFFFFF")))
        value = round(store.get('Flowrate')["value"], 2)
        value = str(value)+" "+store.get('Flowrate')["unit"]
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color(value, "FFFFFF")))
        #Field strength
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color("Field strength :", "BFBFBF")))
        value = round(store.get('Fieldstrength')["value"], 2)
        value = str(value)+" "+store.get('Fieldstrength')["unit"]
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color(value, "BFBFBF")))
        #open the popup
        self.open()

class ConductivityPopup(CEToolBoxPopup):
    """Popup to show the Conductivity result """

    def show_popup(self, data):
        """ get and show the conductivity result from the store. """
        store = get_store()
        self.ids.inlayout.rows = 1
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color("Conductivity :", "FFFFFF")))
        value = round(store.get('Conductivity')["value"], 2)
        conductivitytext = str(value)+" "+store.get('Conductivity')["unit"]
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color(conductivitytext, "FFFFFF")))
        self.open()

class FlowPopup(CEToolBoxPopup):
    """Popup to show the Flow results """
    def show_popup(self, data):
        """ get and show Flows results from the store. """
        store = get_store()
        self.ids.inlayout.rows = 4
        #Field strength
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color("Field strength :", "FFFFFF")))
        value = round(store.get('Fieldstrength')["value"], 2)
        value = str(value)+" "+store.get('Fieldstrength')["unit"]
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color(value, "FFFFFF")))
        #µEOF
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color("µEOF :","BFBFBF")))
        value = "{:.2E}".format(store.get('MicroEOF')["value"])
        value = value +" "+store.get('MicroEOF')["unit"]
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color(value,"BFBFBF")))
        #Length per min
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color("Length per min :", "FFFFFF")))
        value = round(store.get('Lengthpermin')["value"], 2)
        value = str(value)+" "+store.get('Lengthpermin')["unit"]
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color(value,"FFFFFF")))
        #Flow rate
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color("Flow rate :", "BFBFBF")))
        value = round(store.get('Flowrate')["value"], 2)
        value = str(value)+" "+store.get('Flowrate')["unit"]
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color(value,"BFBFBF")))
        #open the popup
        self.open()

class MobilityPopup(CEToolBoxPopup):
    """Popup to show the Mobility results """

    def show_popup(self, data):
        """ get and show Mobility results from the store. """
        store = get_store()
        self.ids.inlayout.rows = 1 + store.get('Nbtimecompound')["value"]
        #the first µEOF
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color("µEOF :","FFFFFF")))
        value = "{:.2E}".format(store.get('MicroEOF')["value"])
        value = value+" "+store.get('MicroEOF')["unit"]
        self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color(value,"FFFFFF")))
        #add all the µEP
        for i in range(1, store.get('Nbtimecompound')["value"]+1):
            if i%2 != 0:
                color = "BFBFBF"
            else:
                color = "FFFFFF"
            self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color("µEP"+str(i)+" :", color)))
            value = "{:.2E}".format(store.get('MicroEP'+str(i))["value"])
            value = value +" "+store.get('MicroEP'+str(i))["unit"]
            self.ids.inlayout.add_widget(CEToolBoxLabel(text=add_color(value,color)))
        #open the popup
        self.open()

class InjectionScreen(Screen):
    """ The screen for Injection """

    def on_pre_enter(self):
        """special function lauch at the clic of the button to go
        on the InjectionScreen 
        this value comes from the json file where we keep it
        """
        store = get_store()
        self.ids.Capillary.text = str(store.get('Capillary')["value"])
        self.ids.CapillaryUnit.text = store.get('Capillary')["unit"]
        self.ids.Towindow.text = str(store.get('Towindow')["value"])
        self.ids.TowindowUnit.text = store.get('Towindow')["unit"]
        self.ids.Idiameter.text = str(store.get('Idiameter')["value"])
        self.ids.IdiameterUnit.text = unicode(store.get('Idiameter')["unit"])
        self.ids.Pressure.text = str(store.get('Pressure')["value"])
        self.ids.PressureUnit.text = store.get('Pressure')["unit"]
        self.ids.Time.text = str(store.get('Time')["value"])
        self.ids.TimeUnit.text = store.get('Time')["unit"]
        self.ids.Viscosity.text = str(store.get('Viscosity')["value"])
        self.ids.ViscosityUnit.text = store.get('Viscosity')["unit"]
        self.ids.Concentration.text = str(store.get('Concentration')["value"])
        self.ids.ConcentrationUnit.text = store.get('Concentration')["unit"]
        self.ids.Molweight.text = str(store.get('Molweight')["value"])
        self.ids.MolweightUnit.text = store.get('Molweight')["unit"]
        self.ids.Voltage.text = str(store.get('Voltage')["value"])
        self.ids.VoltageUnit.text = store.get('Voltage')["unit"]

    def show_injection_results(self):
        """ lauch when clicked on result.
        Compute, store the computation and lauch a popup"""
        #save data
        store = get_store()
        try:
            store.put('Capillary', value=float(self.ids.Capillary.text),
                      unit=self.ids.CapillaryUnit.text)
            store.put('Towindow', value=float(self.ids.Towindow.text),
                      unit=self.ids.TowindowUnit.text)
            store.put('Idiameter', value=float(self.ids.Idiameter.text),
                      unit=self.ids.IdiameterUnit.text)
            store.put('Pressure', value=float(self.ids.Pressure.text),
                      unit=self.ids.PressureUnit.text)
            store.put('Time', value=float(self.ids.Time.text),
                      unit=self.ids.TimeUnit.text)
            store.put('Viscosity', value=float(self.ids.Viscosity.text),
                      unit=self.ids.ViscosityUnit.text)
            store.put('Concentration', 
                      value=float(self.ids.Concentration.text), 
                      unit=self.ids.ConcentrationUnit.text)
            store.put('Molweight', value=float(self.ids.Molweight.text),
                      unit=self.ids.MolweightUnit.text)
            store.put('Voltage', value=float(self.ids.Voltage.text),
                      unit=self.ids.VoltageUnit.text)
        except ValueError:
            data = {}
            data["errcode"] = 1
            data["errtext"] = "Empty field not allowed"
            self._popup = ErrorPopup()
            self._popup.show_popup(data)
            return
        #add data          
        computation = Capillary()
        errcode, errtext = computation.save_injection_result()
        data = {}
        data["errcode"] = errcode
        data["errtext"] = errtext
        if data["errcode"] == 1:
            self._popup = ErrorPopup()
        else:
            self._popup = InjectionPopup()
        self._popup.show_popup(data)

class ViscosityScreen(Screen):
    """ The screen for Viscosity """

    def on_pre_enter(self):
        """special function lauch at the clic of the button to go
        on the ViscosityScreen 
        this value comes from the json file where we keep it
        """
        store = get_store()
        self.ids.Capillary.text = str(store.get('Capillary')["value"])
        self.ids.CapillaryUnit.text = store.get('Capillary')["unit"]
        self.ids.Towindow.text = str(store.get('Towindow')["value"])
        self.ids.TowindowUnit.text = store.get('Towindow')["unit"]
        self.ids.Idiameter.text = str(store.get('Idiameter')["value"])
        self.ids.IdiameterUnit.text = unicode(store.get('Idiameter')["unit"])
        self.ids.Pressure.text = str(store.get('Pressure')["value"])
        self.ids.PressureUnit.text = store.get('Pressure')["unit"]
        self.ids.Detectiontime.text = str(store.get('Detectiontime')["value"])
        self.ids.DetectiontimeUnit.text = store.get('Detectiontime')["unit"]

    def show_viscosity_results(self):
        """ lauch when clicked on result
        Compute, store the computation and lauch a popup"""
        #save data
        store = get_store()
        try:
            store.put('Capillary', value=float(self.ids.Capillary.text),
                      unit=self.ids.CapillaryUnit.text)
            store.put('Towindow', value=float(self.ids.Towindow.text),
                      unit=self.ids.TowindowUnit.text)
            store.put('Idiameter', value=float(self.ids.Idiameter.text),
                      unit=self.ids.IdiameterUnit.text)
            store.put('Pressure', value=float(self.ids.Pressure.text),
                      unit=self.ids.PressureUnit.text)
            store.put('Detectiontime', value=float(self.ids.Detectiontime.text),
                      unit=self.ids.DetectiontimeUnit.text)
        except ValueError:
            data = {}
            data["errcode"] = 1
            data["errtext"] = "Empty field not allowed"
            self._popup = ErrorPopup()
            self._popup.show_popup(data)
            return
        #get and use error codes
        computation = Capillary()
        errcode, errtext = computation.save_vicosity_result()
        data = {}
        data["errcode"] = errcode
        data["errtext"] = errtext
        if data["errcode"] == 1:
            self._popup = ErrorPopup()
        else:
            self._popup = ViscosityPopup()
        self._popup.show_popup(data)

class ConductivityScreen(Screen):
    """The screen for conductivity """

    def on_pre_enter(self):
        """special function lauch at the clic of the button to go
        on the ConductivityScreen 
        this value comes from the json file where we keep it
        """
        store = get_store()
        self.ids.Capillary.text = str(store.get('Capillary')["value"])
        self.ids.CapillaryUnit.text = store.get('Capillary')["unit"]
        self.ids.Towindow.text = str(store.get('Towindow')["value"])
        self.ids.TowindowUnit.text = store.get('Towindow')["unit"]
        self.ids.Idiameter.text = str(store.get('Idiameter')["value"])
        self.ids.IdiameterUnit.text = store.get('Idiameter')["unit"]
        self.ids.Voltage.text = str(store.get('Voltage')["value"])
        self.ids.VoltageUnit.text = store.get('Voltage')["unit"]
        self.ids.Electriccurrent.text = str(store.get('Electriccurrent')["value"])
        self.ids.ElectriccurrentUnit.text = store.get('Electriccurrent')["unit"]

    def show_conductivity_results(self):
        """ lauch when clicked on result
        Compute, store the computation and lauch a popup"""
        store = get_store()
        try:
            store.put('Capillary', value=float(self.ids.Capillary.text),
                      unit=self.ids.CapillaryUnit.text)
            store.put('Towindow', value=float(self.ids.Towindow.text),
                      unit=self.ids.TowindowUnit.text)
            store.put('Idiameter', value=float(self.ids.Idiameter.text),
                      unit=self.ids.IdiameterUnit.text)
            store.put('Voltage', value=float(self.ids.Voltage.text),
                      unit=self.ids.VoltageUnit.text)
            store.put('Electriccurrent', value=float(self.ids.Electriccurrent.text),
                      unit=self.ids.ElectriccurrentUnit.text)
        except ValueError:
            data = {}
            data["errcode"] = 1
            data["errtext"] = "Empty field not allowed"
            self._popup = ErrorPopup()
            self._popup.show_popup(data)
            return
        #get and save error code
        computation = Capillary()
        errcode, errtext = computation.save_conductivy_result()
        data = {}
        data["errcode"] = errcode
        data["errtext"] = errtext
        if data["errcode"] == 1:
            self._popup = ErrorPopup()
        else:
            self._popup = ConductivityPopup()
        self._popup.show_popup(data)

class FlowScreen(Screen):
    """ the screen for the flow"""

    def on_pre_enter(self):
        """special function lauch at the clic of the button to go
        on the FlowScreen
        this value comes from the json file where we keep it
        """
        store = get_store()
        self.ids.Capillary.text = str(store.get('Capillary')["value"])
        self.ids.CapillaryUnit.text = store.get('Capillary')["unit"]
        self.ids.Towindow.text = str(store.get('Towindow')["value"])
        self.ids.TowindowUnit.text = store.get('Towindow')["unit"]
        self.ids.Idiameter.text = str(store.get('Idiameter')["value"])
        self.ids.IdiameterUnit.text = store.get('Idiameter')["unit"]
        self.ids.Voltage.text = str(store.get('Voltage')["value"])
        self.ids.VoltageUnit.text = store.get('Voltage')["unit"]
        self.ids.Electroosmosis.text = str(store.get('Electroosmosis')["value"])
        self.ids.ElectroosmosisUnit.text = store.get('Electroosmosis')["unit"]

    def show_flow_results(self):
        """ lauch when clicked on result
        Compute, store the computation and lauch a popup"""
        store = get_store()
        try:
            store.put('Capillary', value=float(self.ids.Capillary.text),
                      unit=self.ids.CapillaryUnit.text)
            store.put('Towindow', value=float(self.ids.Towindow.text),
                      unit=self.ids.TowindowUnit.text)
            store.put('Idiameter', value=float(self.ids.Idiameter.text),
                      unit=self.ids.IdiameterUnit.text)
            store.put('Voltage', value=float(self.ids.Voltage.text),
                      unit=self.ids.VoltageUnit.text)
            store.put('Electroosmosis', value=float(self.ids.Electroosmosis.text),
                      unit=self.ids.ElectroosmosisUnit.text)
        except ValueError:
            data = {}
            data["errcode"] = 1
            data["errtext"] = "Empty field not allowed"
            self._popup = ErrorPopup()
            self._popup.show_popup(data)
            return
        #get and save errors and value
        computation = Capillary()
        errcode, errtext = computation.save_flow_result()
        data = {}
        data["errcode"] = errcode
        data["errtext"] = errtext
        if data["errcode"] == 1:
            self._popup = ErrorPopup()
        else:
            self._popup = FlowPopup()
        self._popup.show_popup(data)

class MobilityScreen(Screen):
    """ The mobility Screen"""

    def show_mobility_results(self):
        """ lauch when clicked on result
        Compute, store the computation and lauch a popup"""
        store = get_store()
        try:
            store.put('Capillary', value=float(self.ids.Capillary.text),
                      unit=self.ids.CapillaryUnit.text)
            store.put('Towindow', value=float(self.ids.Towindow.text),
                      unit=self.ids.TowindowUnit.text)
            store.put('Voltage', value=float(self.ids.Voltage.text),
                      unit=self.ids.VoltageUnit.text)
            store.put('Electroosmosis', value=float(self.ids.Electroosmosis.text),
                      unit=self.ids.ElectroosmosisUnit.text)
            store.put('Timecompound1', value=float(self.ids.Timecompound1.text),
                      unit=self.ids.Timecompound1Unit.text)
        except ValueError:
            data = {}
            data["errcode"] = 1
            data["errtext"] = "Empty field not allowed"
            self._popup = ErrorPopup()
            self._popup.show_popup(data)
            return
        #save all the timecompound
        for sublist in self.timecompoundlist:
            store.put(sublist[1].id, value=float(sublist[1].text),
                      unit=sublist[2].text)
        #get and save error and values
        computation = Capillary()
        errcode, errtext = computation.save_mobility_result()
        data = {}
        data["errcode"] = errcode
        data["errtext"] = errtext
        
        if data["errcode"] == 1:
            self._popup = ErrorPopup()
        else:
            self._popup = MobilityPopup()
        self._popup.show_popup(data)

    def on_pre_enter(self):
        """special function lauch at the clic of the button to go
        on the MobilityScreen 
        this value comes from the json file where we keep it
        """        
        store = get_store()
        self.ids.Capillary.text = str(store.get('Capillary')["value"])
        self.ids.CapillaryUnit.text = store.get('Capillary')["unit"]
        self.ids.Towindow.text = str(store.get('Towindow')["value"])
        self.ids.TowindowUnit.text = store.get('Towindow')["unit"]
        self.ids.Voltage.text = str(store.get('Voltage')["value"])
        self.ids.VoltageUnit.text = store.get('Voltage')["unit"]
        self.ids.Electroosmosis.text = str(store.get('Electroosmosis')["value"])
        self.ids.ElectroosmosisUnit.text = store.get('Electroosmosis')["unit"]
        self.ids.Timecompound1.text = str(store.get('Timecompound1')["value"])
        self.ids.Timecompound1Unit.text = store.get('Timecompound1')["unit"]
        #set the number of rows
        self.ids.inlayout.rows = 5 + store.get('Nbtimecompound')["value"]
        #force the good size
        self.ids.tscrollview.change_child_height(self.ids.tscrollview.height)
        #set the rest of the time compound
        self.timecompoundlist = []
        for i in range(2, store.get('Nbtimecompound')["value"]+1):
            timecompount = CEToolBoxLabel(text="Time compound "+str(i))
            timecompountvalue = CEToolBoxTextInput(text=str(store.get('Timecompound'+str(i))["value"]),
                                                   id='Timecompound'+str(i))
            timecompountunit =  CEToolBoxSpinner(text=store.get('Timecompound'+str(i))["unit"],
                                                 id='Timecompound'+str(i)+'Unit', 
                                                 values=["s", "min"])
            self.ids.inlayout.add_widget(timecompount)
            self.ids.inlayout.add_widget(timecompountvalue)
            self.ids.inlayout.add_widget(timecompountunit)
            tosave = [timecompount, timecompountvalue, timecompountunit]
            self.timecompoundlist.append(tosave)
        #create the button add and del
        self.add_button = CEToolBoxButton(text="Add", id="addbutton", on_release=self.add_line)
        self.ids.inlayout.add_widget(self.add_button)
        self.del_button = CEToolBoxButton(text="Del", id="delbutton", on_release=self.del_line)
        self.ids.inlayout.add_widget(self.del_button)

    def add_line(self, buttoninstance):
        """ add a line of timecompount
        @param buttoninstance: the instance of the button (not used)
        """
        #del and create again to respect the order
        self.ids.inlayout.remove_widget(self.add_button)
        self.ids.inlayout.remove_widget(self.del_button)
        #create the new line
        store = get_store()
        lastval = store.get('Nbtimecompound')["value"]
        store.put('Nbtimecompound', value=1+lastval)
        self.ids.inlayout.rows = 5 + store.get('Nbtimecompound')["value"]
        #add the widget
        newval = str(store.get('Nbtimecompound')["value"])
        timecompount = CEToolBoxLabel(text="Time compound "+newval)
        timecompountvalue = CEToolBoxTextInput(text=str(1.0),
                                               id='Timecompound'+newval)
        timecompountunit =  CEToolBoxSpinner(text=u"min",
                                             id='Timecompound'+newval+'Unit', 
                                             values=["s", "min"])
        store.put('Timecompound'+newval, value=1.0, unit="min")
        self.ids.inlayout.add_widget(timecompount)
        self.ids.inlayout.add_widget(timecompountvalue)
        self.ids.inlayout.add_widget(timecompountunit)
        tosave = [timecompount, timecompountvalue, timecompountunit]
        self.timecompoundlist.append(tosave)
        #recreate the button
        self.add_button = CEToolBoxButton(text="Add", id="addbutton", on_release=self.add_line)
        self.ids.inlayout.add_widget(self.add_button)
        self.del_button = CEToolBoxButton(text="Del", id="delbutton", on_release=self.del_line)
        self.ids.inlayout.add_widget(self.del_button)
        self.ids.inlayout.rows = 5 + store.get('Nbtimecompound')["value"]
        #force the good size
        self.ids.tscrollview.change_child_height(self.ids.tscrollview.height)

    def del_line(self, buttoninstance):
        """ delete a line of timecompound (do nothing if there is only
        one timecompound line)
        @param buttoninstance: the instance of the button (not used) """
        try:
            widgets = self.timecompoundlist.pop()
        except IndexError:
            return
        for w in widgets:
            self.ids.inlayout.remove_widget(w)
        #del the line in the jsonfile
        store = get_store()
        lastval = store.get('Nbtimecompound')["value"]
        store.delete('Timecompound'+str(lastval))
        store.put('Nbtimecompound', value=lastval-1)
        self.ids.inlayout.rows = 5 + store.get('Nbtimecompound')["value"]
        #force the good size
        self.ids.tscrollview.change_child_height(self.ids.tscrollview.height)

    def on_leave(self):
        """ when the screen is leaved, delete all widget generated from 
        the jsonfile"""
        for widgets in self.timecompoundlist:
            for w in widgets:
                self.ids.inlayout.remove_widget(w)
        self.ids.inlayout.remove_widget(self.add_button)
        self.ids.inlayout.remove_widget(self.del_button)

    def reset(self):
        """ executed when cliqued on the reset button 
        set the value of nbtimecompound at 1 and delete lines"""
        store = get_store()
        nbval = store.get('Nbtimecompound')["value"]
        for i in range(1, nbval):
            self.del_line(1) 

class AboutScreen(Screen):
    """ the About screen """

    def on_pre_enter(self):
        """ get the version before enter """
        self.ids.alabel.text = """[b][size=20]CEToolBox kivy v"""+ __version__ +"""[/size][/b]\n"""

class MenuScreen(Screen):
    """ the menu screen"""
    pass

class ManagerApp(App):
    """ The app """
    title = "CEToolBox"
    create_store()

    def build(self):
        """ add all the screen to the ScreenManager and
        lauch the post_build_init method"""        
        self.sm = ScreenManager()
        self.sm.add_widget(MenuScreen(name='menu'))
        self.sm.add_widget(InjectionScreen(name='injection'))
        self.sm.add_widget(ViscosityScreen(name='viscosity'))
        self.sm.add_widget(ConductivityScreen(name='conductivity'))
        self.sm.add_widget(MobilityScreen(name='mobility'))
        self.sm.add_widget(FlowScreen(name='flow'))
        self.sm.add_widget(AboutScreen(name='about'))
        self.bind(on_start=self.post_build_init)
        return self.sm

    def post_build_init(self, *args):
        """ bind the keyboard to go_menu method """
        win = Window
        win.bind(on_keyboard=self.go_menu)

    def go_menu(self, window, keycode1, keycode2, text, modifiers):
        """ executed for each key press, if the key is return then
        go to the menu screen"""
        if keycode1 in [27, 1001]:
            self.sm.current = "menu"
            return True
        return False

    def on_pause(self):
        """on mobile device, when the device goes on sleep save the 
        screen we was on"""
        store = get_store()
        store.put("pause", value=self.sm.current)
        return True

    def on_resume(self):
        """when the app is recall from sleep get the screen we was on
        and set it """
        store = get_store()
        self.sm.current = str(store.get('pause')["value"])

if __name__ == '__main__':
    ManagerApp().run()