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
|
import curses
from .displayable import DisplayableContainer
from .mouse_event import MouseEvent
from ranger.container import CommandList
class UI(DisplayableContainer):
is_set_up = False
mousemask = curses.ALL_MOUSE_EVENTS | curses.REPORT_MOUSE_POSITION
load_mode = False
def __init__(self, commandlist=None, env=None, fm=None):
import os
os.environ['ESCDELAY'] = '25' # don't know a cleaner way
if env is not None:
self.env = env
if fm is not None:
self.fm = fm
if commandlist is None:
self.commandlist = CommandList()
self.settings.keys.initialize_commands(self.commandlist)
else:
self.commandlist = commandlist
self.win = curses.initscr()
DisplayableContainer.__init__(self, None)
def initialize(self):
"""initialize curses, then call setup (at the first time) and resize."""
self.win.leaveok(0)
self.win.keypad(1)
self.load_mode = False
curses.cbreak()
curses.noecho()
curses.halfdelay(20)
curses.curs_set(0)
curses.start_color()
curses.use_default_colors()
curses.mousemask(self.mousemask)
curses.mouseinterval(0)
## this line solves this problem:
## If an action, following a mouse click, includes the
## suspension and re-initializion of the ui (e.g. running a
## file by clicking on its preview) and the next key is another
## mouse click, the bstate of this mouse event will be invalid.
## (atm, invalid bstates are recognized as scroll-down)
curses.ungetmouse(0,0,0,0,0)
if not self.is_set_up:
self.is_set_up = True
self.setup()
self.update_size()
def suspend(self):
"""Turn off curses"""
from ranger import log
log("suspending ui!")
self.win.keypad(0)
curses.nocbreak()
curses.echo()
curses.curs_set(1)
curses.mousemask(0)
curses.endwin()
def set_load_mode(self, boolean):
boolean = bool(boolean)
if boolean != self.load_mode:
self.load_mode = boolean
if boolean:
# don't wait for key presses in the load mode
curses.cbreak()
self.win.nodelay(1)
else:
self.win.nodelay(0)
curses.halfdelay(20)
def destroy(self):
"""Destroy all widgets and turn off curses"""
DisplayableContainer.destroy(self)
self.suspend()
def handle_mouse(self):
"""Handles mouse input"""
try:
event = MouseEvent(curses.getmouse())
except:
return
# from ranger import log
# log('{0:0>28b} ({0})'.format(event.bstate))
if DisplayableContainer.click(self, event):
return
n = event.ctrl() and 1 or 3
if event.pressed(4):
self.fm.scroll(relative = -n)
elif event.pressed(2) or event.key_invalid():
self.fm.scroll(relative = n)
def handle_key(self, key):
"""Handles key input"""
if hasattr(self, 'hint'):
self.hint()
self.env.key_append(key)
if DisplayableContainer.press(self, key):
return
try:
tup = self.env.keybuffer.tuple_without_numbers()
if tup:
cmd = self.commandlist[tup]
else:
return
except KeyError:
self.env.key_clear()
return
if hasattr(cmd, 'text'):
if hasattr(self, 'hint'):
self.hint(cmd.text)
elif hasattr(cmd, 'execute'):
cmd.execute(self.fm, self.env.keybuffer.number)
self.env.key_clear()
def get_next_key(self):
"""Waits for key input and returns the pressed key"""
key = self.win.getch()
curses.flushinp()
return key
def setup(self):
"""Called after an initialize() call.
Override this!
"""
def redraw(self):
"""Redraw all widgets"""
self.poke()
self.draw()
self.finalize()
def redraw_window(self):
"""Redraw the window. This only calls self.win.redrawwin()."""
self.win.redrawwin()
self.win.refresh()
self.win.redrawwin()
def update_size(self):
"""Update self.env.termsize.
Extend this method to resize all widgets!
"""
self.env.termsize = self.win.getmaxyx()
def draw(self):
"""Erase the window, then draw all objects in the container"""
self.win.erase()
DisplayableContainer.draw(self)
self.win.refresh()
def finalize(self):
"""Finalize every object in container and refresh the window"""
DisplayableContainer.finalize(self)
self.win.refresh()
|