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
|
# 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 BrowserView manages a set of BrowserColumns."""
import curses
from . import Widget
from .browsercolumn import BrowserColumn
from .pager import Pager
from ..displayable import DisplayableContainer
class BrowserView(Widget, DisplayableContainer):
ratios = None
preview = True
preview_available = True
stretch_ratios = None
need_clear = False
def __init__(self, win, ratios, preview = True):
DisplayableContainer.__init__(self, win)
self.ratios = ratios
self.preview = preview
self.old_cf = self.env.cf
self.old_prevfile = None
self.old_prevdir = None
# normalize ratios:
ratio_sum = float(sum(ratios))
self.ratios = tuple(x / ratio_sum for x in 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 = BrowserColumn(self.win, level + offset)
self.add_child(fl)
try:
self.main_column = self.container[preview and -2 or -1]
except IndexError:
self.main_column = None
else:
self.main_column.display_infostring = True
self.main_column.main_column = True
self.pager = Pager(self.win, embedded=True)
self.pager.visible = False
self.add_child(self.pager)
def draw(self):
try:
if self.env.cmd.show_obj.draw_bookmarks:
self._draw_bookmarks()
except AttributeError:
if self.old_cf != self.env.cf:
self.need_clear = True
if self.settings.draw_borders:
if self.old_prevdir != self.settings.preview_directories:
self.need_clear = True
if self.old_prevfile != self.settings.preview_files:
self.need_clear = True
if self.need_clear:
self.win.erase()
self.need_redraw = True
self.need_clear = False
self.old_cf = self.env.cf
self.old_prevfile = self.settings.preview_files
self.old_prevdir = self.settings.preview_directories
DisplayableContainer.draw(self)
if self.settings.draw_borders:
self._draw_borders()
def finalize(self):
if 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.color_reset()
self.need_clear = True
sorted_bookmarks = sorted(item for item in self.fm.bookmarks \
if '/.' not in item[1].path)
def generator():
return zip(range(self.hei-1), sorted_bookmarks)
try:
maxlen = max(len(item[1].path) for i, item in generator())
except ValueError:
return
maxlen = min(maxlen + 5, self.wid)
whitespace = " " * maxlen
for line, items in generator():
key, mark = items
string = " " + key + ": " + mark.path
self.addstr(line, 0, whitespace)
self.addnstr(line, 0, string, self.wid)
if self.settings.draw_bookmark_borders:
self.win.hline(line+1, 0, curses.ACS_HLINE, maxlen)
if maxlen < self.wid:
self.win.vline(0, maxlen, curses.ACS_VLINE, line+1)
self.win.addch(line+1, maxlen, curses.ACS_LRCORNER)
def _draw_borders(self):
win = self.win
self.color('in_browser', 'border')
left_start = 0
right_end = self.wid - 1
rows = [row for row in self.container \
if isinstance(row, BrowserColumn)]
rows.sort(key=lambda row: row.x)
for child in rows:
if not child.has_preview():
left_start = child.x + child.wid
else:
break
if not self.pager.visible:
for child in reversed(rows):
if not child.has_preview():
right_end = child.x - 1
else:
break
if right_end < left_start:
right_end = self.wid - 1
win.hline(0, left_start, curses.ACS_HLINE, right_end - left_start)
win.hline(self.hei - 1, left_start, curses.ACS_HLINE,
right_end - left_start)
win.vline(1, left_start, curses.ACS_VLINE, self.hei - 2)
for child in rows:
if not child.has_preview():
continue
if child.main_column and self.pager.visible:
win.vline(1, right_end, curses.ACS_VLINE, self.hei - 2)
break
x = child.x + child.wid
y = self.hei - 1
try:
win.vline(1, x, curses.ACS_VLINE, y - 1)
win.addch(0, x, curses.ACS_TTEE, 0)
win.addch(y, x, curses.ACS_BTEE, 0)
except:
# in case it's off the boundaries
pass
win.addch(0, left_start, curses.ACS_ULCORNER)
win.addch(self.hei - 1, left_start, curses.ACS_LLCORNER)
win.addch(0, right_end, curses.ACS_URCORNER)
try:
win.addch(self.hei - 1, right_end, curses.ACS_LRCORNER)
except:
pass
def resize(self, y, x, hei, wid):
"""Resize all the columns according to the given ratio"""
DisplayableContainer.resize(self, y, x, hei, wid)
borders = self.settings.draw_borders
pad = 1 if borders else 0
left = pad
cut_off_last = self.preview and not self.preview_available \
and self.stretch_ratios
if cut_off_last:
generator = enumerate(self.stretch_ratios)
else:
generator = enumerate(self.ratios)
last_i = len(self.ratios) - 1
for i, ratio in generator:
wid = int(ratio * self.wid)
if i == last_i:
wid = int(self.wid - left + 1 - pad)
if i == last_i - 1:
self.pager.resize(pad, left, hei - pad * 2, \
max(1, self.wid - left - pad))
try:
self.container[i].resize(pad, left, hei - pad * 2, \
max(1, wid - 1))
except KeyError:
pass
left += wid
def click(self, event):
n = event.ctrl() and 5 or 1
if event.pressed(4):
self.main_column.scroll(relative = -n)
elif event.pressed(2) or event.key_invalid():
self.main_column.scroll(relative = n)
else:
DisplayableContainer.click(self, event)
def open_pager(self):
self.pager.visible = True
self.pager.focused = True
self.need_clear = True
self.pager.open()
try:
self.container[-2].visible = False
self.container[-3].visible = False
except IndexError:
pass
def close_pager(self):
self.pager.visible = False
self.pager.focused = False
self.need_clear = True
self.pager.close()
try:
self.container[-2].visible = True
self.container[-3].visible = 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)
|