1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
|
"""The FileList widget displays the contents of a directory or file."""
from . import Widget
from ..displayable import DisplayableContainer
from .pager import Pager
from ranger import log
class FileList(Widget, DisplayableContainer):
main_display = False
display_infostring = False
scroll_begin = 0
target = None
postpone_drawing = False
tagged_marker = '*'
def __init__(self, win, level):
DisplayableContainer.__init__(self, win)
self.pager = Pager(self.win)
self.add_obj(self.pager)
self.level = level
def resize(self, y, x, hei, wid):
DisplayableContainer.resize(self, y, x, hei, wid)
self.pager.resize(0, 0, hei, wid)
def click(self, event):
"""Handle a MouseEvent"""
from ranger.fsobject.fsobject import T_DIRECTORY
if not (event.pressed(1) or event.pressed(3)):
return False
if self.target is None:
pass
elif self.target.type is T_DIRECTORY:
index = self.scroll_begin + event.y - self.y
if event.pressed(1):
if not self.main_display:
self.fm.enter_dir(self.target.path)
if index < len(self.target):
self.fm.move_pointer(absolute = index)
elif event.pressed(3):
try:
clicked_file = self.target[index]
self.fm.enter_dir(clicked_file.path)
except:
pass
else:
if self.level > 0:
self.fm.move_right()
return True
def has_preview(self):
from ranger.fsobject.file import File
from ranger.fsobject.directory import Directory
if self.target is None:
return False
if isinstance(self.target, File):
if not self._preview_this_file(self.target):
return False
return True
def poke(self):
self.target = self.env.at_level(self.level)
def draw(self):
"""Call either draw_file() or draw_directory()"""
from ranger.fsobject.file import File
from ranger.fsobject.directory import Directory
self.pager.visible = False
if self.target is None:
pass
elif type(self.target) == File:
self.draw_file()
elif type(self.target) == Directory:
self.draw_directory()
DisplayableContainer.draw(self)
def finalize(self):
if self.postpone_drawing:
self.target.load_content_if_outdated()
self.draw_directory()
self.postpone_drawing = False
def _preview_this_file(self, target):
return target.document and not self.settings.preview_files
def draw_file(self):
"""Draw a preview of the file, if the settings allow it"""
if not self.target.accessible:
self.win.addnstr(self.y, self.x, "not accessible", self.wid)
return
if not self._preview_this_file(self.target):
return
try:
f = open(self.target.path, 'r')
except:
pass
else:
self.pager.visible = True
self.pager.set_source(f)
def draw_directory(self):
"""Draw the contents of a directory"""
from ranger.fsobject.directory import Directory
import stat
base_color = ['in_display']
self.target.use()
if not self.target.content_loaded:
# if self.target.force_load:
# self.target.stopped = False
#
# else:
# if not self.target.stopped:
#
# if maxdirsize is not None and self.target.accessible \
# and self.target.size > maxdirsize:
# self.target.stopped = True
#
maxdirsize = self.settings.max_dirsize_for_autopreview
if not self.target.force_load and maxdirsize is not None \
and self.target.accessible \
and self.target.size > maxdirsize:
self.color(base_color, 'error')
self.win.addnstr(self.y, self.x, "no preview", self.wid)
self.color_reset()
return
if self.settings.auto_load_preview:
self.color(base_color)
self.win.addnstr(self.y, self.x, "...", self.wid)
self.postpone_drawing = True
self.color_reset()
return
else:
self.color(base_color, 'error')
self.win.addnstr(self.y, self.x, "not loaded", self.wid)
self.color_reset()
return
if not self.target.load_content_if_outdated():
self.target.sort_if_outdated()
if self.main_display:
base_color.append('maindisplay')
if not self.target.accessible:
self.color(base_color, 'error')
self.win.addnstr(self.y, self.x, "not accessible", self.wid)
self.color_reset()
return
if self.target.empty():
self.color(base_color, 'empty')
self.win.addnstr(self.y, self.x, "empty", self.wid)
self.color_reset()
return
self.set_scroll_begin()
selected_i = self.target.pointer
for line in range(self.hei):
i = line + self.scroll_begin
try:
drawed = self.target[i]
except IndexError:
break
this_color = base_color + list(drawed.mimetype_tuple)
text = drawed.basename
tagged = drawed.realpath in self.fm.tags
if i == selected_i:
this_color.append('selected')
if drawed.marked:
this_color.append('marked')
if tagged:
this_color.append('tagged')
if self.main_display:
text = self.tagged_marker + text
if isinstance(drawed, Directory):
this_color.append('directory')
else:
this_color.append('file')
if drawed.stat is not None and drawed.stat.st_mode & stat.S_IXUSR:
this_color.append('executable')
if drawed.islink:
this_color.append('link')
this_color.append(drawed.exists and 'good' or 'bad')
string = drawed.basename
try:
if self.main_display:
if tagged:
if self.wid > 1:
self.win.addnstr(self.y + line, self.x,
text, self.wid - 2)
elif self.wid > 2:
self.win.addnstr(self.y + line, self.x + 1,
text, self.wid - 2)
else:
self.win.addnstr(self.y + line, self.x, text, self.wid)
if self.display_infostring and drawed.infostring:
info = drawed.infostring
x = self.x + self.wid - 1 - len(info)
if x > self.x:
self.win.addstr(self.y + line, x, str(info) + ' ')
except:
# the last string will cause an error because
# ncurses tries to move out of the bounds
pass
self.color_at(self.y + line, self.x, self.wid, this_color)
if self.main_display and tagged and self.wid > 2:
this_color.append('tag_marker')
self.color_at(self.y + line, self.x,
len(self.tagged_marker), this_color)
self.color_reset()
def get_scroll_begin(self):
"""Determines scroll_begin (the position of the first displayed file)"""
offset = self.settings.scroll_offset
dirsize = len(self.target)
winsize = self.hei
halfwinsize = winsize // 2
index = self.target.pointer or 0
original = self.target.scroll_begin
projected = index - original
upper_limit = winsize - 1 - offset
lower_limit = offset
if original < 0:
return 0
if dirsize < winsize:
return 0
if halfwinsize < offset:
return min( dirsize - winsize, max( 0, index - halfwinsize ))
if original > dirsize - winsize:
self.target.scroll_begin = dirsize - winsize
return self.get_scroll_begin()
if projected < upper_limit and projected > lower_limit:
return original
if projected > upper_limit:
return min( dirsize - winsize,
original + (projected - upper_limit))
if projected < upper_limit:
return max( 0,
original - (lower_limit - projected))
return original
def set_scroll_begin(self):
"""Updates the scroll_begin value"""
self.scroll_begin = self.get_scroll_begin()
self.target.scroll_begin = self.scroll_begin
# TODO: does not work if options.scroll_offset is high,
# relative > 1 and you scroll from scroll_begin = 1 to 0
def scroll(self, relative):
"""scroll by n lines"""
self.set_scroll_begin()
old_value = self.target.scroll_begin
self.target.scroll_begin += relative
self.set_scroll_begin()
if self.target.scroll_begin == old_value:
self.target.move(relative = relative)
self.target.scroll_begin += relative
|