Public Interface IWorkItemsMainForm

    ''' <summary>
    ''' Fetch the work items for a specific grid.
    ''' </summary>
    ''' <param name="gridNumber">The index of the grid, 0 based</param>
    ''' <returns>A list containing all work items</returns>
    Function GetWorkItems(gridNumber As Integer) As List(Of IWorkItem)

    ''' <summary>
    ''' A different activity was selected in the grid.
    ''' </summary>
    ''' <param name="activity">The activity. Nothing means no activity was selected.</param>
    ''' <param name="gridNumber">The number of the grid</param>
    sub ChangeSelectedActivity(activity As IActivity, gridNumber As Integer)
End Interface