## Fields

| Name                   | Type   | Description                                                                                                                                                          | Options |
|------------------------|--------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------|
| Label                  | Text   | -                                                                                                                                                                    | -       |
| Allowed file types     | Text   | Provides hints for browsers to select the correct file types. You can specify extensions and MIME types separated by comma, or leave empty to accept any file.    | -       |
| Allow multiple files    | Boolean| -                                                                                                                                                                    | -       |
| Custom CSS classes     | Text   | CSS classes, separated by spaces. You can define classes in custom stylesheets.                                                                                     | -       |

## Events

**wf-file-change**  
Capture changes to this control.

```python
def onchange_handler(state, payload):

# An array of dictionaries is provided in the payload
    # The dictionaries have the properties name, type and data
    # The data property is a file-like object

uploaded_files = payload
    for i, uploaded_file in enumerate(uploaded_files):
        name = uploaded_file.get("name")
        file_data = uploaded_file.get("data")
        with open(f"{name}-{i}.jpeg", "wb") as file_handle:
            file_handle.write(file_data)
```