Pmw.MessageBar() - information line for displaying short messages
This class creates a single-line message display area. Messages of several different types may displayed. Messages are cleared after a period defined for each message type. Each message type has a priority so that if the application attempts to display more than one message at a time, the message with the highest priority will be displayed. Messages may be accompanied by a number of audible bells.
If None, a label component is not created. The default is None.
{
'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),
}message('help', text).
class Demo:
def __init__(self, parent):
# Create and pack the MessageBar.
self._messagebar = Pmw.MessageBar(parent,
entry_width = 40,
entry_relief='groove',
labelpos = 'w',
label_text = 'Status:')
self._messagebar.pack(side = 'bottom', fill = 'x',
expand = 1, padx = 10, pady = 10)
# Create and pack the ScrolledListBox to change the MessageBar.
self.box = Pmw.ScrolledListBox(parent,
listbox_selectmode='single',
items=('state', 'help', 'userevent', 'systemevent',
'usererror', 'systemerror', 'busy',),
label_text='Message type',
labelpos='n',
selectioncommand=self.selectionCommand)
self.box.pack(fill = 'both', expand = 'yes', padx = 10, pady = 10)
self._index = 0
self._stateCounter = 0
def selectionCommand(self):
sels = self.box.getcurselection()
if len(sels) > 0:
self._index = self._index + 1
messagetype = sels[0]
if messagetype == 'state':
self._stateCounter = (self._stateCounter + 1) % 3
text = stateMessages[self._stateCounter]
if text != '':
text = text + ' (' + messagetype + ')'
self._messagebar.message('state', text)
else:
text = messages[messagetype]
text = text + ' (' + messagetype + ')'
self._messagebar.message(messagetype, text)
if messagetype == 'busy':
Pmw.showbusycursor()
self.box.after(2000)
Pmw.hidebusycursor()
self._messagebar.resetmessages('busy')
text = 'All files successfully removed'
text = text + ' (userevent)'
self._messagebar.message('userevent', text)
messages = {
'help': 'Save current file',
'userevent': 'Saving file "foo"',
'busy': 'Busy deleting all files from file system ...',
'systemevent': 'File "foo" saved',
'usererror': 'Invalid file name "foo/bar"',
'systemerror': 'Failed to save file: file system full',
}
stateMessages = {
0: '',
1: 'Database is down',
2: 'Waiting for reply from database',
}
Home. Pmw 0.8.5 Maintainer gregm@iname.com. 9 Feb 2001