113 lines
3.0 KiB
Python
113 lines
3.0 KiB
Python
"""
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This module defines the exceptions used by asciimatics.
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"""
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from __future__ import division
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from __future__ import absolute_import
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from __future__ import print_function
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from __future__ import unicode_literals
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class ResizeScreenError(Exception):
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"""
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Asciimatics raises this Exception if the terminal is resized while playing
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a Scene (and the Screen has been told not to ignore a resizing event).
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"""
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def __init__(self, message, scene=None):
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"""
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:param message: Error message for this exception.
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:param scene: Scene that was active at time of resize.
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"""
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super(ResizeScreenError, self).__init__()
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self._scene = scene
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self._message = message
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def __str__(self):
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"""
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Printable form of the exception.
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"""
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return self._message
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@property
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def scene(self):
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"""
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The Scene that was running when the Screen resized.
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"""
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return self._scene
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class StopApplication(Exception):
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"""
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Any component can raise this exception to tell Asciimatics to stop running.
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If playing a Scene (i.e. inside `Screen.play()`) the Screen will return
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to the calling function. When used at any other time, the exception will
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need to be caught by the application using Asciimatics.
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"""
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def __init__(self, message):
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"""
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:param message: Error message for this exception.
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"""
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super(StopApplication, self).__init__()
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self._message = message
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def __str__(self):
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"""
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Printable form of the exception.
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"""
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return self._message
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class NextScene(Exception):
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"""
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Any component can raise this exception to tell Asciimatics to move to the
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next Scene being played. Only effective inside `Screen.play()`.
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"""
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def __init__(self, name=None):
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"""
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:param name: Next Scene to invoke. Defaults to next in the list.
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"""
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super(NextScene, self).__init__()
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self._name = name
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@property
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def name(self):
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"""
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The name of the next Scene to invoke.
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"""
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return self._name
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class InvalidFields(Exception):
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"""
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When saving data from a Frame, you can ask the Frame to validate the data
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before saving. This is the exception that gets thrwn if any invalid datd
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is found.
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"""
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def __init__(self, fields):
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"""
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:param fields: The list of the fields that are invalid.
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"""
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super(InvalidFields, self).__init__()
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self._fields = fields
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@property
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def fields(self):
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"""
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The list of fields that are invalid.
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"""
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return self._fields
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class Highlander(Exception):
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"""
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There can be only one Layout or Widget with certain options set (designed
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to fill the rest of the screen). If you hit this exception you have
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a bug in your application.
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If you don't get the name, take a look at `this link
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<https://en.wikipedia.org/wiki/Highlander_(film)>`__.
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"""
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