BuiltinActions :: BrowseFiles - Browse and select a single file for read

The action pops up with a file dialog for selecting a file from the file system. The intention of this dialog is using the file in read-only mode, i.e. one cannot enter a file name, which does not exist. The result will be stored to the control, which is associated with the action. Typically, the action is associated with a single line edit control.

In order to evaluate data in a more sophisticated way, one may handle the doBeforeDataStore() event and return true in order to suppress further processing of the selected file name. The selected file name can be obtained from the control by calling text().