Interface OpenFileCallback

All Superinterfaces:
AsyncCallback<OpenFileCallback.Params,OpenFileCallback.Action>, BrowserAsyncCallback<OpenFileCallback.Params,OpenFileCallback.Action>, BrowserCallback, Callback
All Known Implementing Classes:
DefaultOpenFileCallback, DefaultOpenFileCallback, DefaultOpenFileCallback

public interface OpenFileCallback extends BrowserAsyncCallback<OpenFileCallback.Params,OpenFileCallback.Action>
This callback is invoked when the browser requests to display a file chooser dialog to open a file. You can use this callback to display the file chooser, or provide the file without displaying any dialogs.

Use the OpenFileCallback.Action.open(Path) method to provide the selected file to the browser.

Use the OpenFileCallback.Action.cancel() method to cancel the dialog.

If the callback throws an exception, the OpenFileCallback.Action.cancel() method will be invoked.