"""The FileListContainer manages a set of FileLists."""
from . import Widget
from .filelist import FileList
from .pager import Pager
from ..displayable import DisplayableContainer
class FileListContainer(Widget, DisplayableContainer):
ratios = None
preview = True
preview_available = True
stretch_ratios = None
def __init__(self, win, ratios, preview = True):
DisplayableContainer.__init__(self, win)
from functools import reduce
self.ratios = ratios
self.preview = preview
# normalize ratios:
ratio_sum = float(reduce(lambda x,y: x + y, ratios))
self.ratios = tuple(map(lambda x: x / ratio_sum, ratios))
if len(self.ratios) >= 2:
self.stretch_ratios = self.ratios[:-2] + \
((self.ratios[-2] + self.ratios[-1] * 0.9), \
(self.ratios[-1] * 0.1))
offset = 1 - len(ratios)
if preview: offset += 1
for level in range(len(ratios)):
fl = FileList(self.win, level + offset)
self.add_obj(fl)
try:
self.main_filelist = self.container[preview and -2 or -1]
except IndexError:
self.main_filelist = None
else:
self.main_filelist.display_infostring = True
self.main_filelist.main_display = True
self.pager = Pager(self.win, embedded=True)
self.add_obj(self.pager)
def resize(self, y, x, hei, wid):
"""Resize all the filelists according to the given ratio"""
DisplayableContainer.resize(self, y, x, hei, wid)
left = self.x
cut_off_last = self.preview and not self.preview_available \
and self.stretch_ratios
if cut_off_last:
generator = zip(self.stretch_ratios, range(len(self.ratios)))
else:
generator = zip(self.ratios, range(len(self.ratios)))
last_i = len(self.ratios) - 1
for ratio, i in generator:
wid = int(ratio * self.wid)
if i == last_i:
wid = int(self.wid - left + 1)
if i == last_i - 1:
self.pager.resize(self.y, left, hei, max(1, self.wid - left))
try:
self.container[i].resize(self.y, left, hei, max(1, wid-1))
except KeyError:
pass
left += wid
def open_pager(self):
self.pager.activate(True)
self.pager.open()
try:
self.container[-2].show(False)
self.container[-3].show(False)
except IndexError:
pass
def close_pager(self):
self.pager.activate(False)
self.pager.close()
try:
self.container[-2].show(True)
self.container[-3].show(True)
except IndexError:
pass
def poke(self):
DisplayableContainer.poke(self)
if self.settings.collapse_preview and self.preview:
has_preview = self.container[-2].has_preview()
if self.preview_available != has_preview:
self.preview_available = has_preview
self.resize(self.y, self.x, self.hei, self.wid)