#  ============================================================================
#
#  Copyright (C) 2007-2008 Conceptive Engineering bvba. All rights reserved.
#  www.conceptive.be / project-camelot@conceptive.be
#
#  This file is part of the Camelot Library.
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#  and appearing in the file LICENSE.GPL included in the packaging of
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"""Functions and widget to represent exceptions to the user"""

from camelot.core.utils import ugettext as _

def register_exception(logger, text, exception):
    """Log an exception
    :exception_info: exception information in a user readable format, to be used when
    displaying an exception message box"""
    logger.error( text, exc_info = exception )
    import traceback, cStringIO
    sio = cStringIO.StringIO()
    traceback.print_exc(file=sio)
    traceback_print = sio.getvalue()
    sio.close()
    return (exception, traceback_print)
    
def model_thread_exception_message_box(exception_info, title=None, text=None):
    """Display an exception that occurred in the model thread in a message box,
  use this function as the exception argument in the model thread's post function
  to represent the exception to the user
    
  :param exception_info: a tuple containing the exception that was thrown and the
  traceback
  """
    from PyQt4 import QtGui
    title = title or _('Exception')
    text  = text  or _('An unexpected event occurred')
    exc, traceback = exception_info
    msgBox = QtGui.QMessageBox(QtGui.QMessageBox.Warning,
                               unicode(title), unicode(text))
    # chop the size of the text to prevent error dialogs larger than the screen
    msgBox.setInformativeText(unicode(exc)[:1000])
    msgBox.setDetailedText(traceback)
    msgBox.exec_()
