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

from tuikit.container import Container

from tuikit.button import Button

class Window(Container):

    '''Window widget.

    It represents part of screen with border, close button and contents.

    Window can be moved, resized or closed by user.'''

    def __init__(self, width=40, height=10):

        '''Create window of requested size.'''

        Container.__init__(self, width, height)

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

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

        self.connect('mouseup', self.on_mouseup)

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

        self.connect('resize', self.on_resize)

        #: Window title.

        self.title = ''

        self._closebutton = True

        #: Allow user to resize window.

        self.resizable = True

        #: Allow user to move window.

        self.movable = True

        self.resizing = False

        self.moving = False

        self.closebtn = Button('x')

        self.closebtn.allowlayout = False

        self.closebtn.x = self.width - 5

        self.closebtn.width = 3

        self.closebtn.connect('click', self.on_closebtn)

        self.closebtn.bg = 'controls'

        self.closebtn.bghi = 'controls-active'

        self.add(self.closebtn)

        self.borders = (1, 1, 1, 1)

        self.colorprefix = 'window:'

    @property

    def closebutton(self):

        '''Show/hide close button.'''

        return self._closebutton

    @closebutton.setter

    def closebutton(self, value):

        self._closebutton = value

        self.closebtn.hidden = not value

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

        screen.pushcolor('normal')

        screen.frame(x, y, self.width, self.height)

        if self.resizable:

            if self.resizing:

                screen.pushcolor('controls-active')

            else:

                screen.pushcolor('controls')

            screen.puts(x + self.width - 2, y + self.height - 1, '─┘') # '━┛'

            screen.popcolor()

        if self.title:

            screen.puts(x + (self.width - len(self.title))//2, y, self.title)

        screen.fill(x+1, y+1, self.width-2, self.height-2)

        screen.popcolor()

    def on_mousedown(self, ev):

        self.dragstart = (ev.wx, ev.wy)

        if self.resizable and ev.wx >= self.width - 1 and ev.wy >= self.height - 1:

            self.resizing = True

        elif self.movable:

            self.moving = True

        self.origsize = (self.width, self.height)

        self.redraw(True)

    def on_mouseup(self, ev):

        if self.resizing:

            self.width = self.origsize[0] + ev.wx - self.dragstart[0]

            self.height = self.origsize[1] + ev.wy - self.dragstart[1]

            self.resizing = False

        elif self.moving:

            self.x = ev.px - self.dragstart[0]

            self.y = ev.py - self.dragstart[1]

            self.moving = False

        self.redraw(True)

    def on_mousemove(self, ev):

        if ev.px == self.x + self.dragstart[0] \

        and ev.py == self.y + self.dragstart[1]:

            return

        #if x > self.parent.width-self.width:

        #    return

        if self.resizing:

            self.width = self.origsize[0] + ev.wx - self.dragstart[0]

            self.height = self.origsize[1] + ev.wy - self.dragstart[1]

        elif self.moving:

            self.x = ev.px - self.dragstart[0]

            self.y = ev.py - self.dragstart[1]

        self.redraw(True)

    def on_resize(self):

        self.closebtn.x = self.width - 5

    def on_closebtn(self):

        self.hide()