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# Copyright (c) 2015-2020 Vector 35 Inc
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to
# deal in the Software without restriction, including without limitation the
# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
# sell copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.
import traceback
import json
import ctypes
# Binary Ninja components
from binaryninja import _binaryninjacore as core
from binaryninja.enums import ActionType
import binaryninja
class UndoAction(object):
name = None
action_type = None
_registered = False
_registered_cb = None
def __init__(self, view):
self._cb = core.BNUndoAction()
if not self.__class__._registered:
raise TypeError("undo action type not registered")
action_type = self.__class__.action_type
if isinstance(action_type, str):
self._cb.type = ActionType[action_type]
else:
self._cb.type = action_type
self._cb.context = 0
self._cb.undo = self._cb.undo.__class__(self._undo)
self._cb.redo = self._cb.redo.__class__(self._redo)
self._cb.serialize = self._cb.serialize.__class__(self._serialize)
self._view = view
@classmethod
def register(cls):
binaryninja._init_plugins()
if cls.name is None:
raise ValueError("undo action 'name' not defined")
if cls.action_type is None:
raise ValueError("undo action 'action_type' not defined")
cb_type = ctypes.CFUNCTYPE(ctypes.c_bool, ctypes.c_void_p, ctypes.c_char_p, ctypes.POINTER(core.BNUndoAction))
cls._registered_cb = cb_type(cls._deserialize)
core.BNRegisterUndoActionType(cls.name, 0, cls._registered_cb)
cls._registered = True
@classmethod
def _deserialize(cls, ctxt, data, result):
try:
action = cls.deserialize(json.loads(data))
if action is None:
return False
result.context = action._cb.context
result.undo = action._cb.undo
result.redo = action._cb.redo
result.serialize = action._cb.serialize
return True
except:
log.log_error(traceback.format_exc())
return False
def _undo(self, ctxt, view):
try:
self.undo()
except:
log.log_error(traceback.format_exc())
return False
def _redo(self, ctxt, view):
try:
self.redo()
except:
log.log_error(traceback.format_exc())
return False
def _serialize(self, ctxt):
try:
return json.dumps(self.serialize())
except:
log.log_error(traceback.format_exc())
return "null"
@property
def view(self):
""" """
return self._view
@view.setter
def view(self, value):
self._view = value
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