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
|
# Class to display messages in an information line.
import string
import Tkinter
import Pmw
class MessageBar(Pmw.MegaWidget):
def __init__(self, parent = None, **kw):
# Define the megawidget options.
INITOPT = Pmw.INITOPT
defaultMessageTypes = {
# (priority, showtime, bells, logmessage)
'systemerror' : (5, 10, 2, 1),
'usererror' : (4, 5, 1, 0),
'busy' : (3, 0, 0, 0),
'systemevent' : (2, 5, 0, 0),
'userevent' : (2, 5, 0, 0),
'help' : (1, 5, 0, 0),
'state' : (0, 0, 0, 0),
}
optiondefs = (
('labelmargin', 0, INITOPT),
('labelpos', None, INITOPT),
('messagetypes', defaultMessageTypes, INITOPT),
('silent', 0, None),
('sticky', 'ew', INITOPT),
)
self.defineoptions(kw, optiondefs)
# Initialise the base class (after defining the options).
Pmw.MegaWidget.__init__(self, parent)
# Create the components.
interior = self.interior()
self._messageBarEntry = self.createcomponent('entry',
(), None,
Tkinter.Entry, (interior,))
# Can't always use 'disabled', since this greys out text in Tk 8.4.2
try:
self._messageBarEntry.configure(state = 'readonly')
except Tkinter.TclError:
self._messageBarEntry.configure(state = 'disabled')
self._messageBarEntry.grid(column=2, row=2, sticky=self['sticky'])
interior.grid_columnconfigure(2, weight=1)
interior.grid_rowconfigure(2, weight=1)
self.createlabel(interior)
# Initialise instance variables.
self._numPriorities = 0
for info in self['messagetypes'].values():
if self._numPriorities < info[0]:
self._numPriorities = info[0]
self._numPriorities = self._numPriorities + 1
self._timer = [None] * self._numPriorities
self._messagetext = [''] * self._numPriorities
self._activemessage = [0] * self._numPriorities
# Check keywords and initialise options.
self.initialiseoptions()
def destroy(self):
for timerId in self._timer:
if timerId is not None:
self.after_cancel(timerId)
self._timer = [None] * self._numPriorities
Pmw.MegaWidget.destroy(self)
def message(self, type, text):
# Display a message in the message bar.
(priority, showtime, bells, logmessage) = self['messagetypes'][type]
if not self['silent']:
for i in range(bells):
if i != 0:
self.after(100)
self.bell()
self._activemessage[priority] = 1
if text is None:
text = ''
self._messagetext[priority] = string.replace(text, '\n', ' ')
self._redisplayInfoMessage()
if logmessage:
# Should log this text to a text widget.
pass
if showtime > 0:
if self._timer[priority] is not None:
self.after_cancel(self._timer[priority])
# Define a callback to clear this message after a time.
def _clearmessage(self=self, priority=priority):
self._clearActivemessage(priority)
mseconds = int(showtime * 1000)
self._timer[priority] = self.after(mseconds, _clearmessage)
def helpmessage(self, text):
if text is None:
self.resetmessages('help')
else:
self.message('help', text)
def resetmessages(self, type):
priority = self['messagetypes'][type][0]
self._clearActivemessage(priority)
for messagetype, info in self['messagetypes'].items():
thisPriority = info[0]
showtime = info[1]
if thisPriority < priority and showtime != 0:
self._clearActivemessage(thisPriority)
def _clearActivemessage(self, priority):
self._activemessage[priority] = 0
if self._timer[priority] is not None:
self.after_cancel(self._timer[priority])
self._timer[priority] = None
self._redisplayInfoMessage()
def _redisplayInfoMessage(self):
text = ''
for priority in range(self._numPriorities - 1, -1, -1):
if self._activemessage[priority]:
text = self._messagetext[priority]
break
self._messageBarEntry.configure(state = 'normal')
self._messageBarEntry.delete(0, 'end')
self._messageBarEntry.insert('end', text)
# Can't always use 'disabled', since this greys out text in Tk 8.4.2
try:
self._messageBarEntry.configure(state = 'readonly')
except Tkinter.TclError:
self._messageBarEntry.configure(state = 'disabled')
Pmw.forwardmethods(MessageBar, Tkinter.Entry, '_messageBarEntry')
|
