When the user starts a drag-and-drop operation and the sidebar needs
to ask the application for which drag action to perform, then the
sidebar will emit this signal.
The application can evaluate the context for customary actions, or
it can check the type of the files indicated by source_file_list against the
possible actions for the destination dest_file.
The drag action to use must be the return value of the signal handler.
GdkDragContext with information about the drag operation
GFile with the tentative location that is being hovered for a drop
Since 3.10
When the user starts a drag-and-drop operation and the sidebar needs to ask the application for which drag action to perform, then the sidebar will emit this signal. The application can evaluate the context for customary actions, or it can check the type of the files indicated by source_file_list against the possible actions for the destination dest_file. The drag action to use must be the return value of the signal handler. GdkDragContext with information about the drag operation GFile with the tentative location that is being hovered for a drop Since 3.10