##April 2010
##CSC323
##The GUI for modifying or creating a species database.

from tkinter import *
from ButtonCreator import *

#Code to import ../model/ files
import sys
sys.path.append('../model')
import Species
import SpeciesDatabase

import Menu
import SpeciesSetup

def run(event = None):
    """Creates and runs the setup"""
    root = Tk()
    SpeciesSetup = SetupFrame(root)
    root.mainloop()           
    
class SetupFrame:
    """Create and fill the Frame of the selection menu""" 
    def __init__(self, parent, width=480, height=600):
      self.parent = parent
      self.specdb = SpeciesDatabase.getInstance()
      self.parent.geometry(str(width)+"x"+str(height))
      self.frame = Frame(self.parent, width=width, height=height)
      self.frame.pack()
      
      title = Label(self.frame, text="Species Database",fg="black")
      title.pack(fill=X)
      self.container = ShowSpecies(self.parent)
      
class ShowSpecies:
    """Creates a frame to display the species database."""
    def __init__(self, parent, width = 2000, bg = "darkblue"):  
        width = width
        bg = bg
        self.container = Frame(parent, width=width, bg=bg)
        self.container.pack(side = BOTTOM, fill = BOTH, expand = YES)
        self.parent = parent
        self.specdb = SpeciesDatabase.getInstance()
        
        self.showDatabase()
        self.addLowerButtons()
        self.addLoadingFrame()

    def showDatabase(self):
        """Add the species database display"""
        self.listContainer = Frame(self.container, width=10, bg="darkblue")
        listLabel = Label(self.listContainer, text="Species Database",\
                           bg = "darkblue", fg = "white")
        listLabel.pack(fill=Y, side=TOP)

        self.speciesList = Listbox(self.listContainer, height=20)
        
        """Creates scrollbar"""
        scroll = Scrollbar(self.listContainer)
        scroll.pack(side = RIGHT, fill = Y)
        scroll.config(command = self.speciesList.yview)

        l = self.specdb.allSpeciesNames()
        for name in l:
            self.speciesList.insert(END, name)
        self.speciesList.insert(END, "New Species")

        self.speciesList.config(yscrollcommand = scroll.set)
        self.speciesList.pack(side=TOP)
        self.listContainer.pack(side=TOP, pady=30)
        
    def addLowerButtons(self):
        """Add Buttons to the container"""
        self.lowerButtonFrame = Frame(self.container, bg="darkblue")
        modifyButton = ButtonCreator(self.lowerButtonFrame, "Modify/New",\
                                        self.modifySpecies, packOption = RIGHT)
        mainMenuButton = ButtonCreator(self.lowerButtonFrame, "Main Menu",\
                                       self.spawnMenu, packOption = LEFT)
        self.lowerButtonFrame.pack(side=BOTTOM, fill = BOTH)

    def addLoadingFrame(self):
        self.loadingFrame = Frame(self.container, bg="darkblue")
        self.filenameField = Entry(self.loadingFrame)
        self.filenameField.pack(side=LEFT,fill=BOTH)
        loadButton=ButtonCreator(self.loadingFrame,"Load File",self.loadFile\
                                 ,packOption=RIGHT)
        self.loadingFrame.pack(side=BOTTOM, fill= BOTH)
        

    def loadFile(self, event= None):
        """Loads species from a species database file"""        
        self.specdb.loadFile(self.filenameField.get())
        self.speciesList.delete(0,self.speciesList.size()-1)
        l = self.specdb.allSpeciesNames()
        for name in l:
            self.speciesList.insert(END, name)
        self.speciesList.insert(END, "New Species")


    def modifySpecies(self, event = None):
        """Enters species setup for the selected species"""
        specname = self.speciesList.get(ACTIVE)
        self.parent.destroy()
        if specname != "New Species":
            core = self.specdb.getSpecies(specname)
            print(core.countRules())
            SpeciesSetup.run(spec = core, dbsbsize = core.countRules())
        else:
            SpeciesSetup.run()

    def spawnMenu(self, event = None):
        """Loads the Main Menu and destroys this window"""
        self.parent.destroy()
        Menu.run()