Public Interface IDomainController
#Region "Employees"

    ''' <summary>
    ''' Gets a collection of all the available employees.
    ''' </summary>
    ''' <returns></returns>
    Function GetAvailableEmployees() As ICollection(Of IEmployee)

    ''' <summary>
    ''' Get a selected employee corresponding to an employee number. This is merely the pre-defined index for each possible employee.
    ''' If no employee was selected, 'Nothing' will be returned.
    ''' </summary>
    ''' <param name="employeeNumber">The number (index) of the employee, 0 based</param>
    ''' <returns>The employee</returns>
    Function GetSelectedEmployee(employeeNumber As Integer) As IEmployee

    ''' <summary>
    ''' Gets a collection of all the selected employees.
    ''' </summary>
    ''' <returns></returns>
    Function GetSelectedEmployees() As ICollection(Of IEmployee)

    ''' <summary>
    ''' Select and store the chosen employee.
    ''' </summary>
    ''' <param name="employeeNumber">The number (index) for the employee</param>
    ''' <param name="employee"></param>
    Sub SelectEmployee(employeeNumber As Integer, employee As IEmployee)

    ''' <summary>
    ''' Deselect an employee.
    ''' </summary>
    ''' <param name="employeeNumber">The number (index) of an employee, 0 based</param>
    Sub DeselectEmployee(employeeNumber As Integer)
#End Region

#Region "Work items"
    ''' <summary>
    ''' Fetches the work items for a certain work post.
    ''' </summary>
    ''' <param name="workPostIndex">The index of the work post, 0 based</param>
    ''' <returns>Collection of the work items</returns>
    Function GiveWorkItems(workPostIndex As Integer) As ICollection(Of IWorkItem)

    Sub StartActivity(activity As IActivity, employeeNumber As Integer)

    Sub FinishActivity(employeeNumber As Integer)

    Sub StopActivity(employeeNumber As Integer)

    Sub PauseActivitiesFromApp()

#End Region
End Interface