Helper functions

DAVE has some helper functions for both the GUI and API.

GUI

To	Use
Show a dialog during longer actions and give the user the option to cancel	BlockingDialog, Example in source-file with BlockingDialog(self.gui) as b
Run external programs in the background	BackgroundRunnerGui, Example in source-file
Display a non-intrusive message	InfoMessage, Message popup next to cursor or other defined location
Qt polygon with mouse click event	ClickablePolygonItem
Grid Editor	GridEdit
Minimal text input dialog	TextInput
Edit some or all properties of a node	PropertyEditorPopup