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# WebOpenPanelResultListener

`WebView` user interface delegates that implement the webView:runOpenPanelForFileButtonWithResultListener: method use the methods defined in this protocol to communicate with the listener object. The methods allow the delegate to send a cancel message, or set the selected file name.

```
protocol WebOpenPanelResultListener : NSObjectProtocol
```

## Topics

### Setting a File Name

[`chooseFilename(_:)`](/documentation/WebKit/WebOpenPanelResultListener/chooseFilename(_:))

Displays a file open panel and returns the selected filename.

[`chooseFilenames(_:)`](/documentation/WebKit/WebOpenPanelResultListener/chooseFilenames(_:))

Displays a file open panel and returns the multiple selected filenames.

### Cancelling a File Open Operation

[`cancel()`](/documentation/WebKit/WebOpenPanelResultListener/cancel())

Invoked when a file open operation was cancelled.


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