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# This file is part of ranger, the console file manager.
# License: GNU GPL version 3, see the file "AUTHORS" for details.
"""The base GUI element for views on the directory"""
import curses, _curses
from ranger.ext.keybinding_parser import key_to_string
from . import Widget
from ..displayable import DisplayableContainer
class ViewBase(Widget, DisplayableContainer):
draw_bookmarks = False
need_clear = False
draw_hints = False
draw_info = False
def __init__(self, win):
DisplayableContainer.__init__(self, win)
self.fm.signal_bind('move', self.request_clear)
self.old_draw_borders = self.settings.draw_borders
def request_clear(self):
self.need_clear = True
def draw(self):
if self.need_clear:
self.win.erase()
self.need_redraw = True
self.need_clear = False
for tab in self.fm.tabs.values():
directory = tab.thisdir
if directory:
directory.load_content_if_outdated()
directory.use()
DisplayableContainer.draw(self)
if self.draw_bookmarks:
self._draw_bookmarks()
elif self.draw_hints:
self._draw_hints()
elif self.draw_info:
self._draw_info(self.draw_info)
def finalize(self):
if hasattr(self, 'pager') and self.pager.visible:
try:
self.fm.ui.win.move(self.main_column.y, self.main_column.x)
except:
pass
else:
try:
x = self.main_column.x
y = self.main_column.y + self.main_column.target.pointer\
- self.main_column.scroll_begin
self.fm.ui.win.move(y, x)
except:
pass
def _draw_bookmarks(self):
self.columns[-1].clear_image(force=True)
self.fm.bookmarks.update_if_outdated()
self.color_reset()
self.need_clear = True
sorted_bookmarks = sorted((item for item in self.fm.bookmarks \
if self.fm.settings.show_hidden_bookmarks or \
'/.' not in item[1].path), key=lambda t: t[0].lower())
hei = min(self.hei - 1, len(sorted_bookmarks))
ystart = self.hei - hei
maxlen = self.wid
self.addnstr(ystart - 1, 0, "mark path".ljust(self.wid), self.wid)
whitespace = " " * maxlen
for line, items in zip(range(self.hei-1), sorted_bookmarks):
key, mark = items
string = " " + key + " " + mark.path
self.addstr(ystart + line, 0, whitespace)
self.addnstr(ystart + line, 0, string, self.wid)
self.win.chgat(ystart - 1, 0, curses.A_UNDERLINE)
def _draw_info(self, lines):
self.columns[-1].clear_image(force=True)
self.need_clear = True
hei = min(self.hei - 1, len(lines))
ystart = self.hei - hei
i = ystart
whitespace = " " * self.wid
for line in lines:
if i >= self.hei:
break
self.addstr(i, 0, whitespace)
self.addnstr(i, 0, line, self.wid)
i += 1
def _draw_hints(self):
self.columns[-1].clear_image(force=True)
self.need_clear = True
hints = []
for k, v in self.fm.ui.keybuffer.pointer.items():
k = key_to_string(k)
if isinstance(v, dict):
text = '...'
else:
text = v
if text.startswith('hint') or text.startswith('chain hint'):
continue
hints.append((k, text))
hints.sort(key=lambda t: t[1])
hei = min(self.hei - 1, len(hints))
ystart = self.hei - hei
self.addnstr(ystart - 1, 0, "key command".ljust(self.wid),
self.wid)
try:
self.win.chgat(ystart - 1, 0, curses.A_UNDERLINE)
except:
pass
whitespace = " " * self.wid
i = ystart
for key, cmd in hints:
string = " " + key.ljust(11) + " " + cmd
self.addstr(i, 0, whitespace)
self.addnstr(i, 0, string, self.wid)
i += 1
def _collapse(self):
# Should the last column be cut off? (Because there is no preview)
if not self.settings.collapse_preview or not self.preview \
or not self.stretch_ratios:
return False
result = not self.columns[-1].has_preview()
target = self.columns[-1].target
if not result and target and target.is_file:
if self.fm.settings.preview_script and \
self.fm.settings.use_preview_script:
try:
result = not self.fm.previews[target.realpath]['foundpreview']
except:
return self.old_collapse
self.old_collapse = result
return result
def click(self, event):
if DisplayableContainer.click(self, event):
return True
direction = event.mouse_wheel_direction()
if direction:
self.main_column.scroll(direction)
return False
def resize(self, y, x, hei, wid):
DisplayableContainer.resize(self, y, x, hei, wid)
def poke(self):
DisplayableContainer.poke(self)
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