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import traceback |
import traceback |
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from wxPython.wx import * |
from wxPython.wx import * |
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from wxPython.lib.dialogs import wxScrolledMessageDialog |
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from Thuban.Lib.connector import Publisher |
from Thuban.Lib.connector import Publisher |
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from Thuban.Lib.fileutil import get_application_dir |
from Thuban.Lib.fileutil import get_application_dir |
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from Thuban.Model.save import save_session |
from Thuban.Model.save import save_session |
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from Thuban.Model.load import load_session |
from Thuban.Model.load import load_session |
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from Thuban.Model.messages import MAPS_CHANGED |
from Thuban.Model.messages import MAPS_CHANGED |
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from Thuban.Model.layer import RasterLayer |
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import Thuban.Model.resource |
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import view |
import view |
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import tree |
import tree |
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from messages import SESSION_REPLACED |
from messages import SESSION_REPLACED |
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class ThubanApplication(wxApp, Publisher): |
class ThubanApplication(wxApp, Publisher): |
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""" |
""" |
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""" |
""" |
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def OnInit(self): |
def OnInit(self): |
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sys.excepthook = self.ShowExceptionDialog |
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self.splash = self.splash_screen() |
self.splash = self.splash_screen() |
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if self.splash is not None: |
if self.splash is not None: |
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self.splash.Show() |
self.splash.Show() |
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""" |
""" |
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self.SetSession(create_empty_session()) |
self.SetSession(create_empty_session()) |
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def OpenSession(self, filename): |
def OpenSession(self, filename, db_connection_callback = None): |
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"""Open the session in the file named filename""" |
"""Open the session in the file named filename""" |
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# Make sure we deal with an absolute pathname. Otherwise we can |
# Make sure we deal with an absolute pathname. Otherwise we can |
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# get problems when saving because the saving code expects an |
# get problems when saving because the saving code expects an |
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# absolute directory name |
# absolute directory name |
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filename = os.path.abspath(filename) |
filename = os.path.abspath(filename) |
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session = load_session(filename) |
session = load_session(filename, |
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db_connection_callback = db_connection_callback) |
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session.SetFilename(filename) |
session.SetFilename(filename) |
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session.UnsetModified() |
session.UnsetModified() |
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self.SetSession(session) |
self.SetSession(session) |
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for map in session.Maps(): |
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for layer in map.Layers(): |
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if isinstance(layer, RasterLayer) \ |
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and not Thuban.Model.resource.has_gdal_support(): |
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msg = _("The current session contains Image layers,\n" |
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"but the GDAL library is not available to " |
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"draw them.") |
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dlg = wx.wxMessageDialog(None, |
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msg, |
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_("Library not available"), |
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wx.wxOK | wx.wxICON_INFORMATION) |
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print msg |
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dlg.ShowModal() |
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dlg.Destroy() |
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break |
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def SaveSession(self): |
def SaveSession(self): |
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save_session(self.session, self.session.filename) |
save_session(self.session, self.session.filename) |
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self.top.SetMap(self.session.Maps()[0]) |
self.top.SetMap(self.session.Maps()[0]) |
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else: |
else: |
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self.top.SetMap(None) |
self.top.SetMap(None) |
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in_exception_dialog = 0 # flag: are we already inside the exception dialog? |
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def ShowExceptionDialog(self, exc_type, exc_value, exc_traceback): |
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"""Show a message box with information about an exception. |
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The parameters are the usual values describing an exception in |
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Python, the exception type, the value and the traceback. |
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This method can be used as a value for the sys.excepthook. |
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""" |
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if self.in_exception_dialog: |
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return |
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self.in_exception_dialog = 1 |
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while wxIsBusy(): |
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wxEndBusyCursor() # reset the mouse cursor |
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try: |
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lines = traceback.format_exception(exc_type, exc_value, |
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exc_traceback) |
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message = "An unhandled exception occurred:\n%s\n" % exc_value+\ |
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"(please report to " \ |
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"http://thuban.intevation.org/bugtracker.html)"\ |
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"\n\n\n"+\ |
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"".join(lines) |
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print message |
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# We don't use an explicit parent here because this method might |
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# be called in circumstances where the main window doesn't exist |
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# anymore. |
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dlg = wxScrolledMessageDialog(None, message, |
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"Thuban: Internal Error") |
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dlg.ShowModal() |
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dlg.Destroy() |
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finally: |
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self.in_exception_dialog = 0 |
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# delete the last exception info that python keeps in |
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# sys.last_* because especially last_traceback keeps |
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# indirect references to all objects bound to local |
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# variables and this might prevent some object from being |
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# collected early enough. |
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sys.last_type = sys.last_value = sys.last_traceback = None |
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