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# Copyright (C) 2009, 2010 Roman Zimbelmann <romanz@lavabit.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
The File Manager, putting the pieces together
"""
from time import time
from collections import deque
import os
import sys
import ranger
from ranger.core.actions import Actions
from ranger.container.tags import Tags
from ranger.gui.defaultui import DefaultUI
from ranger.container import Bookmarks
from ranger.core.runner import Runner
from ranger import relpath_conf
from ranger.ext.get_executables import get_executables
from ranger.fsobject.directory import Directory
from ranger.ext.signal_dispatcher import SignalDispatcher
from ranger import __version__
from ranger.core.loader import Loader
CTRL_C = 3
TICKS_BEFORE_COLLECTING_GARBAGE = 100
TIME_BEFORE_FILE_BECOMES_GARBAGE = 1200
class FM(Actions, SignalDispatcher):
input_blocked = False
input_blocked_until = 0
def __init__(self, ui=None, bookmarks=None, tags=None):
"""Initialize FM."""
Actions.__init__(self)
SignalDispatcher.__init__(self)
self.ui = ui
self.log = deque(maxlen=20)
self.bookmarks = bookmarks
self.tags = tags
self.tabs = {}
self.current_tab = 1
self.loader = Loader()
self.log.append('Ranger {0} started! Process ID is {1}.' \
.format(__version__, os.getpid()))
self.log.append('Running on Python ' + sys.version.replace('\n',''))
# COMPAT
@property
def executables(self):
"""For compatibility. Calls get_executables()"""
return get_executables()
def initialize(self):
"""If ui/bookmarks are None, they will be initialized here."""
if self.bookmarks is None:
if ranger.arg.clean:
bookmarkfile = None
else:
bookmarkfile = relpath_conf('bookmarks')
self.bookmarks = Bookmarks(
bookmarkfile=bookmarkfile,
bookmarktype=Directory,
autosave=self.settings.autosave_bookmarks)
self.bookmarks.load()
else:
self.bookmarks = bookmarks
if not ranger.arg.clean and self.tags is None:
self.tags = Tags(relpath_conf('tagged'))
if self.ui is None:
self.ui = DefaultUI()
self.ui.initialize()
def mylogfunc(text):
self.notify(text, bad=True)
self.run = Runner(ui=self.ui, apps=self.apps,
logfunc=mylogfunc)
self.env.signal_bind('cd', self._update_current_tab)
def block_input(self, sec=0):
self.input_blocked = sec != 0
self.input_blocked_until = time() + sec
def input_is_blocked(self):
if self.input_blocked and time() > self.input_blocked_until:
self.input_blocked = False
return self.input_blocked
def loop(self):
"""
The main loop consists of:
1. reloading bookmarks if outdated
2. letting the loader work
3. drawing and finalizing ui
4. reading and handling user input
5. after X loops: collecting unused directory objects
"""
self.env.enter_dir(self.env.path)
gc_tick = 0
# for faster lookup:
ui = self.ui
throbber = ui.throbber
bookmarks = self.bookmarks
loader = self.loader
env = self.env
has_throbber = hasattr(ui, 'throbber')
try:
while True:
bookmarks.update_if_outdated()
loader.work()
if has_throbber:
if loader.has_work():
throbber(loader.status)
else:
throbber(remove=True)
ui.redraw()
ui.set_load_mode(loader.has_work())
ui.handle_input()
gc_tick += 1
if gc_tick > TICKS_BEFORE_COLLECTING_GARBAGE:
gc_tick = 0
env.garbage_collect(TIME_BEFORE_FILE_BECOMES_GARBAGE)
except KeyboardInterrupt:
# this only happens in --debug mode. By default, interrupts
# are caught in curses_interrupt_handler
raise SystemExit
finally:
bookmarks.remember(env.cwd)
bookmarks.save()
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