Is there a way to access the true file system path when using a "Browse" button on webview?

I'm trying to obtain the full filepath when selecting the "Browse" button on a input[type="file"] element in my webview application. I know that browsers by default don't allow web apps to know the true file system paths, but since webview is used to make desktop applications I wonder is there some hack that would allow us to access the file system?

It appears that the default behavior is just that of a normal browser, which adds a fake path to the filename, but for my application I want to obtain an actual folder from the user which my application will store files in. Being able to select that with a file browser window would help user experience a lot.