# CompletionController

> **Class** in `deepagents_code`

📖 [View in docs](https://reference.langchain.com/python/deepagents-code/widgets/autocomplete/CompletionController)

Protocol for completion controllers.

## Signature

```python
CompletionController()
```

## Extends

- `Protocol`

## Methods

- [`can_handle()`](https://reference.langchain.com/python/deepagents-code/widgets/autocomplete/CompletionController/can_handle)
- [`on_text_changed()`](https://reference.langchain.com/python/deepagents-code/widgets/autocomplete/CompletionController/on_text_changed)
- [`on_key()`](https://reference.langchain.com/python/deepagents-code/widgets/autocomplete/CompletionController/on_key)
- [`reset()`](https://reference.langchain.com/python/deepagents-code/widgets/autocomplete/CompletionController/reset)

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[View source on GitHub](https://github.com/langchain-ai/deepagents/blob/0412009c5441bef8d75a427e1da8909e33ab5b56/libs/code/deepagents_code/widgets/autocomplete.py#L78)