# Copyright (c) 2009, 2010 hut <hut@lavabit.com>
#
# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

"""
The titlebar is the widget at the top, giving you broad orientation.

It displays the current path among other things.
"""

from math import floor

from . import Widget
from ranger.gui.bar import Bar

class TitleBar(Widget):
	old_cf = None
	old_keybuffer = None
	old_wid = None
	result = None
	throbber = ' '

	def draw(self):
		if self.env.cf != self.old_cf or\
				str(self.env.keybuffer) != str(self.old_keybuffer) or\
				self.wid != self.old_wid:
			self.old_wid = self.wid
			self.old_cf = self.env.cf
			self._calc_bar()
		self._print_result(self.result)
		if self.wid > 2:
			self.color('in_titlebar', 'throbber')
			self.win.addnstr(self.y, self.wid - 2, self.throbber, 1)

	def _calc_bar(self):
		bar = Bar('in_titlebar')
		self._get_left_part(bar)
		self._get_right_part(bar)
		try:
			bar.shrink_by_cutting(self.wid)
		except ValueError:
			bar.shrink_by_removing(self.wid)
		self.result = bar.combine()

	def _get_left_part(self, bar):
		import socket, os

		username = os.getenv('USER')
		if username == 'root':
			clr = 'bad'
		else:
			clr = 'good'

		bar.add(username, 'hostname', clr, fixedsize=True)
		bar.add('@', 'hostname', clr, fixedsize=True)
		bar.add(socket.gethostname(), 'hostname', clr, fixedsize=True)

		for path in self.env.pathway:
			if path.islink:
				clr = 'link'
			else:
				clr = 'directory'

			bar.add(path.basename, clr)
			bar.add('/', clr, fixedsize=True)

		if self.env.cf is not None:
			bar.add(self.env.cf.basename, 'file', fixedsize=True)

	def _get_right_part(self, bar):
		kb = str(self.env.keybuffer)
		self.old_keybuffer = kb
		bar.addright(kb, 'keybuffer', fixedsize=True)
		bar.addright('  ', 'space', fixedsize=True)

	def _print_result(self, result):
		import _curses
		self.win.move(0, 0)
		for part in result:
			self.color(*part.lst)
			self.addstr(part.string)
		self.color_reset()