Thuban/Model/base.py

# Copyright (c) 2001 by Intevation GmbH
# Authors:
# Bernhard Herzog <[email protected]>
#
# This program is free software under the GPL (>=v2)
# Read the file COPYING coming with Thuban for details.

"""
Various base classes that didn't fir elsewhere
"""

__version__ = "$Revision$"

from Thuban.Lib.connector import Publisher

from messages import TITLE_CHANGED

class TitledObject:

    """Mix-in class for objects that have titles"""

    def __init__(self, title):
        self.title = title

    def Title(self):
        return self.title

    def SetTitle(self, title):
        self.title = title
        self.issue(TITLE_CHANGED, self)


class Modifiable(Publisher):

    """Class for objects maintaining a modified flag."""

    def __init__(self):
        self.modified = 0

    def WasModified(self):
        """Return true if the layer was modified"""
        return self.modified

    def UnsetModified(self):
        """Unset the modified flag"""
        self.modified = 0

    def changed(self, channel = None, *args):
        """Set the modified flag and issue a mesage on the given channel
        with arguments args. Call this method whenever anything has
        changed in a layer"""
        self.modified = 1
        if channel is not None:
            apply(self.issue, (channel, args))
1	# Copyright (c) 2001 by Intevation GmbH
2	# Authors:
3	# Bernhard Herzog <[email protected]>
4	#
5	# This program is free software under the GPL (>=v2)
6	# Read the file COPYING coming with Thuban for details.
7
8	"""
9	Various base classes that didn't fir elsewhere
10	"""
11
12	__version__ = "$Revision$"
13
14	from Thuban.Lib.connector import Publisher
15
16	from messages import TITLE_CHANGED
17
18	class TitledObject:
19
20	"""Mix-in class for objects that have titles"""
21
22	def __init__(self, title):
23	self.title = title
24
25	def Title(self):
26	return self.title
27
28	def SetTitle(self, title):
29	self.title = title
30	self.issue(TITLE_CHANGED, self)
31
32
33	class Modifiable(Publisher):
34
35	"""Class for objects maintaining a modified flag."""
36
37	def __init__(self):
38	self.modified = 0
39
40	def WasModified(self):
41	"""Return true if the layer was modified"""
42	return self.modified
43
44	def UnsetModified(self):
45	"""Unset the modified flag"""
46	self.modified = 0
47
48	def changed(self, channel = None, *args):
49	"""Set the modified flag and issue a mesage on the given channel
50	with arguments args. Call this method whenever anything has
51	changed in a layer"""
52	self.modified = 1
53	if channel is not None:
54	apply(self.issue, (channel, args))
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