#!/usr/bin/env python
## CURSES BASIC-MAIL GUI 
#   This is the Basic-Mail program, a basic email client written in python
#   with a curses interface.
#
# To Run: Go to the Basic-Mail directory and type "python Basic-Mail.py",
#         without the quotes.
#         If it doesn't open, make sure that the size of the console window
#         is at least 80 x 30 pixels.
##
## Filename: interface.py ##
#   This file contains functions that work with tabs.
##

## IMPORTS ##
import curses, curses.ascii, curses.panel  # Curses imports
import traceback, os, sys, select, string  # Random imports
from variables import *  # Imports all variables
from draw import *  # Imports the window drawing functions

## Function: Searches to see if given tab is already open.
##           If the tab is open, it returns the number of the tab
##           If not, it returns 111 to indicate false.
##           (Returning 0 for false would screw with tabs[0])
def find_tab(tab_name):
    tab_count = 0
    while tab_count < len(tabs[0]):
        if tabs[0][tab_count][1:-3] == tab_name:
            return tab_count
        tab_count += 1
    return 111

## Function: Selects a specific tab.
##           Returns the active tab.
## Usage: active_tab = select_tab(tab_number)
def select_tab(count):
    select_bar(tab_bar,tabs,count,10,10,0)
    # Opens appropriate panel in the main window.
    if count == 0:
        tab1.top()
        active_tab = tab1
    if count == 1 and len(tabs[0])>1:
        tab2.top()
        active_tab = tab2
    if count == 2 and len(tabs[0])>2:
        tab3.top()
        active_tab = tab3
    if count == 3 and len(tabs[0])>3:
        tab4.top()
        active_tab = tab4
    if count == 4 and len(tabs[0])>4:
        tab5.top()
        active_tab = tab5
    curses.panel.update_panels()
    curses.doupdate()
    draw_screen(active_tab)
    return active_tab

## Function: Opens a tab, either by selecting it or creating it.
##           Returns the selected tab.
## Usage: active_tab = open_tab("Inbox")
def open_tab(tab_name):
    # Checks if the tab is already open
    tab_count = find_tab(tab_name)
    # If it is, select it
    if tab_count != 111: 
        return select_tab(tab_count)
    # Otherwise, open a new tab
    else:
        # Checks for too many open tabs
        from pop_up import create_pop_up
        if len(tabs[0]) == 5:
            useless = create_pop_up(2)
        else:
            # Adds the new tab to the tab array
            tabs[0].append("\%s:%s/" % (str(tab_name), str(len(tabs[0])+1)))
            return select_tab(len(tabs[0])-1)

## Function: Writes to a tab.
##           You can give it a string or a list.
## Usage: win1 = write_tab(win1, word_list)
def write_tab(window,string):
    window.addstr(10,50,string)
    return window