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# 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 TaskView allows you to modify what the loader is doing.
"""
import curses
from collections import deque
from . import Widget
from ranger.ext.accumulator import Accumulator
from ranger.container import CommandList
class TaskView(Widget, Accumulator):
old_lst = None
def __init__(self, win):
Widget.__init__(self, win)
Accumulator.__init__(self)
self.scroll_begin = 0
self.commandlist = CommandList()
self.settings.keys.initialize_taskview_commands(self.commandlist)
def draw(self):
base_clr = deque()
base_clr.append('in_taskview')
lst = self.get_list()
if self.old_lst != lst:
self.old_lst = lst
self.need_redraw = True
if self.need_redraw:
self.win.erase()
if not self.pointer_is_synced():
self.sync_index()
if self.hei <= 0:
return
self.addstr(0, 0, "Task View")
self.color_at(0, 0, self.wid, base_clr, 'title')
if lst:
for i in range(self.hei - 1):
i += self.scroll_begin
try:
obj = lst[i]
except IndexError:
break
y = i + 1
clr = deque(base_clr)
if self.pointer == i:
clr.append('selected')
descr = obj.get_description()
self.addstr(y, 0, descr, self.wid)
self.color_at(y, 0, self.wid, clr)
else:
if self.hei > 1:
self.addstr(1, 0, "No task in the queue.")
self.color_at(1, 0, self.wid, base_clr, 'error')
self.color_reset()
def finalize(self):
y = self.y + 1 + self.pointer - self.scroll_begin
self.fm.ui.win.move(y, self.x)
def task_remove(self, i=None):
if i is None:
i = self.pointer
self.fm.loader.remove(index=i)
def task_move(self, absolute, i=None):
if i is None:
i = self.pointer
self.fm.loader.move(_from=i, to=absolute)
def press(self, key):
try:
tup = self.env.keybuffer.tuple_without_numbers()
if tup:
cmd = self.commandlist[tup]
else:
return
except KeyError:
self.env.key_clear()
else:
if hasattr(cmd, 'execute'):
try:
cmd.execute_wrap(self)
except Exception as error:
self.fm.notify(error)
self.env.key_clear()
def get_list(self):
return self.fm.loader.queue
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