Thuban/UI/application.py

# Copyright (C) 2001, 2002 by Intevation GmbH
# Authors:
# Jan-Oliver Wagner <[email protected]>
# Bernhard Herzog <[email protected]>
#
# This program is free software under the GPL (>=v2)
# Read the file COPYING coming with Thuban for details.

"""
Thuban's application object.
"""

__version__ = "$Revision$"

import sys, os
import traceback

from wxPython.wx import *

from Thuban.Lib.connector import Publisher

from Thuban.Model.session import create_empty_session
from Thuban.Model.save import save_session
from Thuban.Model.load import load_session

import view
import tree
from interactor import Interactor
import mainwindow

from messages import SESSION_CHANGED


class ThubanApplication(wxApp, Publisher):

    """
    Thuban's application class.

    All wxWindows programs have to have an instance of an application
    class derived from wxApp. In Thuban the application class holds
    references to the main window, the session and the interactor.
    """

    def OnInit(self):
        self.read_startup_files()
        self.interactor = Interactor(None)
        top = mainwindow.MainWindow(NULL, -1, self, self.interactor)
        top.Show(true)
        self.top = top
        self.SetTopWindow(top)
        self.session = None
        self.create_session()
        return true

    def read_startup_files(self):
        """Read the startup files."""
        # for now the startup file is ~/.thuban/thubanstart.py
        dir =os.path.expanduser("~/.thuban")
        if os.path.isdir(dir):
            sys.path.append(dir)
            try:
                import thubanstart
            except ImportError:
                tb = sys.exc_info()[2]
                try:
                    if tb.tb_next is not None:
                        # The ImportError exception was raised from
                        # inside the thubanstart module.
                        sys.stderr.write("Cannot import the thubanstart"
                                         "module\n")
                        traceback.print_exc(None, sys.stderr)
                    else:
                        # There's no thubanstart module.
                        sys.stderr.write("No thubanstart module available\n")
                finally:
                    # make sure we delete the traceback object,
                    # otherwise there's be circular references involving
                    # the current stack frame
                    del tb
            except:
                sys.stderr.write("Cannot import the thubanstart module\n")
                traceback.print_exc(None, sys.stderr)
        else:
            # There's no .thuban directory
            sys.stderr.write("No ~/.thuban directory\n")

    def Session(self):
        """Return the application's session object"""
        return self.session

    def SetSession(self, session):
        """Make session the new session.

        Issue SESSION_CHANGED.
        """
        oldsession = self.session
        self.session = session
        self.issue(SESSION_CHANGED)
        self.interactor.SetSession(session)
        self.set_map()
        if oldsession is not None:
            oldsession.Destroy()

    def create_session(self):
        # Create a simple default session
        self.SetSession(create_empty_session())

    def OpenSession(self, filename):
        session = load_session(filename)
        session.SetFilename(filename)
        session.UnsetModified()
        self.SetSession(session)

    def SaveSession(self):
        save_session(self.session, self.session.filename)

    def set_map(self):
        if self.session.HasMaps():
            self.top.SetMap(self.session.Maps()[0])
        else:
            self.top.SetMap(None)
1	bh	189	# Copyright (C) 2001, 2002 by Intevation GmbH
2	bh	6	# Authors:
3			# Jan-Oliver Wagner <[email protected]>
4	bh	189	# Bernhard Herzog <[email protected]>
5	bh	6	#
6			# This program is free software under the GPL (>=v2)
7			# Read the file COPYING coming with Thuban for details.
8
9			"""
10			Thuban's application object.
11			"""
12
13			__version__ = "$Revision$"
14
15	bh	189	import sys, os
16			import traceback
17
18	bh	6	from wxPython.wx import *
19
20			from Thuban.Lib.connector import Publisher
21
22			from Thuban.Model.session import create_empty_session
23			from Thuban.Model.save import save_session
24			from Thuban.Model.load import load_session
25
26			import view
27			import tree
28			from interactor import Interactor
29	bh	215	import mainwindow
30	bh	6
31			from messages import SESSION_CHANGED
32
33
34
35			class ThubanApplication(wxApp, Publisher):
36
37			"""
38			Thuban's application class.
39
40			All wxWindows programs have to have an instance of an application
41			class derived from wxApp. In Thuban the application class holds
42			references to the main window, the session and the interactor.
43			"""
44
45			def OnInit(self):
46	bh	189	self.read_startup_files()
47	bh	6	self.interactor = Interactor(None)
48	bh	229	top = mainwindow.MainWindow(NULL, -1, self, self.interactor)
49	bh	6	top.Show(true)
50			self.top = top
51			self.SetTopWindow(top)
52			self.session = None
53			self.create_session()
54			return true
55
56	bh	189	def read_startup_files(self):
57			"""Read the startup files."""
58			# for now the startup file is ~/.thuban/thubanstart.py
59			dir =os.path.expanduser("~/.thuban")
60			if os.path.isdir(dir):
61			sys.path.append(dir)
62			try:
63			import thubanstart
64			except ImportError:
65			tb = sys.exc_info()[2]
66			try:
67			if tb.tb_next is not None:
68			# The ImportError exception was raised from
69			# inside the thubanstart module.
70			sys.stderr.write("Cannot import the thubanstart"
71			"module\n")
72			traceback.print_exc(None, sys.stderr)
73			else:
74			# There's no thubanstart module.
75			sys.stderr.write("No thubanstart module available\n")
76			finally:
77			# make sure we delete the traceback object,
78			# otherwise there's be circular references involving
79			# the current stack frame
80			del tb
81			except:
82			sys.stderr.write("Cannot import the thubanstart module\n")
83			traceback.print_exc(None, sys.stderr)
84			else:
85			# There's no .thuban directory
86			sys.stderr.write("No ~/.thuban directory\n")
87
88	bh	219	def Session(self):
89			"""Return the application's session object"""
90			return self.session
91
92	bh	6	def SetSession(self, session):
93	bh	219	"""Make session the new session.
94
95			Issue SESSION_CHANGED.
96			"""
97	bh	6	oldsession = self.session
98			self.session = session
99			self.issue(SESSION_CHANGED)
100			self.interactor.SetSession(session)
101			self.set_map()
102			if oldsession is not None:
103			oldsession.Destroy()
104
105			def create_session(self):
106			# Create a simple default session
107			self.SetSession(create_empty_session())
108
109			def OpenSession(self, filename):
110			session = load_session(filename)
111			session.SetFilename(filename)
112			session.UnsetModified()
113			self.SetSession(session)
114
115			def SaveSession(self):
116			save_session(self.session, self.session.filename)
117
118			def set_map(self):
119			if self.session.HasMaps():
120			self.top.SetMap(self.session.Maps()[0])
121			else:
122			self.top.SetMap(None)
Name	Value
svn:eol-style	native
svn:keywords	Author Date Id Revision