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

from .widget import Widget

import logging

class MenuBar(Widget):

    def __init__(self, items = []):

        Widget.__init__(self, 0, 1)

        self.bg = 2

        self.highlight = 3

        self.setitems(items)

        self.selected = None

        self.connect('draw', self.on_draw)

        self.connect('keypress', self.on_keypress)

        self.connect('mousedown', self.on_mousedown)

        self.connect('mousemove', self.on_mousemove)

        self.connect('unfocus', self.on_unfocus)

    def setitems(self, items):

        self.items = items

        i = 0

        for item in self.items:

            if isinstance(item[1], Widget):

                item[1].x = i

                item[1].y = self.y + 1

                item[1].allowlayout = False

                item[1].hidden = True

                item[1].connect('focus', self.on_submenu_focus)

            i += len(item[0]) + 4

    def on_draw(self, screen, x, y):

        screen.pushcolor(self.bg)

        i = 0

        for item in self.items:

            if self.selected == item:

                screen.pushcolor(self.highlight, screen.BOLD)

                screen.puts(x + i, y, '  ' + item[0] + '  ')

                screen.popcolor()

            else:

                screen.puts(x + i, y, '  ' + item[0] + '  ')

            i += len(item[0]) + 4

        if i < self.width:

            screen.puts(x + i, y, ' ' * (self.width - i))

        screen.popcolor()

    def on_keypress(self, keyname, char):

        if keyname == 'left':

            self.move_selected(-1)

        elif keyname == 'right':

            self.move_selected(+1)

        else:

            if self.selected:

                if isinstance(self.selected[1], Widget):

                    self.selected[1].emit('keypress', keyname, char)

    def move_selected(self, offset):

        if self.selected:

            i = self.items.index(self.selected)

            item = self.items[(i + offset) % len(self.items)]

            self.unselect()

            self.select(item)

        self.redraw()

    def on_mousedown(self, ev):

        i = 0

        self.unselect()

        for item in self.items:

            w = len(item[0]) + 4

            if ev.wx >= i and ev.wx < i + w:

                self.select(item)

            i += w

    def on_mousemove(self, ev):

        self.on_mousedown(ev)

    def on_unfocus(self, newfocus):

        #logging.getLogger('tuikit').debug('unfocus')

        if self.selected and newfocus == self.selected[1]:

            return

        self.unselect()

    def on_submenu_focus(self):

        self.setfocus()

    def select(self, item):

        self.selected = item

        if isinstance(item[1], Widget):

            item[1].hidden = False

            item[1].redraw()

    def unselect(self):

        if self.selected:

            if isinstance(self.selected[1], Widget):

                self.selected[1].hidden = True

            self.selected = None