# -*- coding: utf-8 -*-

import logging

import time

import math

from tuikit.container import Container

class TopWindow(Container):

    '''Top window of an application. Covers entire screen.'''

    def __init__(self):

        '''Create top window.'''

        Container.__init__(self)

        self.top = self

        self.timeout = []

        self.timelast = None

    def draw(self, driver, x=0, y=0):

        """Draw the top window and its children.

        This is entry point for full screen redraw.

        """

        driver.erase()

        Container.draw(self, driver, x, y)

    def add_timeout(self, s, func):

        if not len(self.timeout):

            self.timelast = time.time()

        self.timeout += [[s, func]]

    def remove_timeout(self, func):

        for to in self.timeout[:]:

            if to[1] == func:

                self.timeout.remove(to)

    def has_timeout(self):

        return len(self.timeout) and True or False

    def nearest_timeout(self):

        return min(self.timeout)[0]

    def process_timeout(self):

        now = time.time()

        lasted = now - self.timelast

        self.timelast = now

        for to in self.timeout[:]:

            newt = to[0] - lasted

            if newt <= 0.0:

                to[1]()

                self.timeout.remove(to)

            else:

                to[0] = newt

class Application:

    '''Application class. Defines main loop.'''

        '''Create application.'''

        self.top = TopWindow()

        '''Top window.'''

        self.quit = False

        self.driver = self.get_driver_instance(driver)

        '''Driver class instance (render + input), e.g. DriverCurses.'''

        self.log = logging.getLogger('tuikit')

        self.log.setLevel(logging.DEBUG)

        handler = logging.FileHandler('./tuikit.log')

        formatter = logging.Formatter('%(asctime)s %(levelname)-5s %(message)s', '%y-%m-%d %H:%M:%S')

        handler.setFormatter(formatter)

        self.log.addHandler(handler)

        self.log.info('=== start ===')

    def start(self):

        '''Start application. Runs main loop.'''

        self.driver.start(self.mainloop)

    def terminate(self):

        '''Terminate application.'''

        self.quit = True

    def mainloop(self):

        '''The main loop.'''

        self.applytheme()

        self.top.size = self.driver.size  # link top widget size to screen size

        self.top.emit('resize')

        while True:

            self.top.draw(self.driver)

            self.driver.commit()

            timeout = None

            if self.top.has_timeout():

                timeout = int(math.ceil(self.top.nearest_timeout() * 10))

            events = self.driver.getevents(timeout)

            if self.top.has_timeout():

                self.top.process_timeout()

            for event in events:

                if event[0] == 'quit':

                    self.quit = True

                else:

                    self.top.emit(event[0], *event[1:])

            if self.quit:

                break

    def applytheme(self):

        driver = self.driver

        driver.setcolor('normal',                  'white on black')

        driver.setcolor('strong',                  'white on black, bold')

        driver.setcolor('active',                  'black on cyan')

        driver.setcolor('window:normal',           'white on blue')

        driver.setcolor('window:controls',         'white on blue, bold')

        driver.setcolor('window:controls-active',  'cyan on blue, bold')

        driver.setcolor('button',                  'black on white')

        driver.setcolor('button-active',           'black on cyan')

        driver.setcolor('menu',                    'black on cyan')

        driver.setcolor('menu-active',             'white on cyan, bold')

        driver.setcolor('combo:normal',            'black on green')

        driver.setcolor('test-blink',              'cyan on blue, blink')

        driver.setcolor('test-bold',               'cyan on blue, bold')

        driver.setcolor('test-dim',                'cyan on blue, dim')

        driver.setcolor('test-standout',           'cyan on blue, standout')

        driver.setcolor('test-underline',          'cyan on blue, underline')

    def get_driver_instance(self, name):

        module = __import__('tuikit.driver_' + name, fromlist=['driverclass'])

        return module.driverclass()