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# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License.
from typing import Dict
from .dialog_context import DialogContext
from .dialog_reason import DialogReason
from .dialog_turn_result import DialogTurnResult
from .dialog_state import DialogState
class WaterfallStepContext(DialogContext):
def __init__(
self,
parent,
dc: DialogContext,
options: object,
values: Dict[str, object],
index: int,
reason: DialogReason,
result: object = None,
):
super(WaterfallStepContext, self).__init__(
dc.dialogs, dc.context, DialogState(dc.stack)
)
self._wf_parent = parent
self._next_called = False
self._index = index
self._options = options
self._reason = reason
self._result = result
self._values = values
self.parent = dc.parent
@property
def index(self) -> int:
return self._index
@property
def options(self) -> object:
return self._options
@property
def reason(self) -> DialogReason:
return self._reason
@property
def result(self) -> object:
return self._result
@property
def values(self) -> Dict[str, object]:
return self._values
async def next(self, result: object) -> DialogTurnResult:
if self._next_called is True:
raise Exception(
"WaterfallStepContext.next(): method already called for dialog and step '%s'[%s]."
% (self._wf_parent.id, self._index)
)
# Trigger next step
self._next_called = True
return await self._wf_parent.resume_dialog(
self, DialogReason.NextCalled, result
)
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