/// <summary>
/// Asynchronous web api call to update the array of submission assignments.
/// </summary>
/// <param name="c"></param>
public void UpdateAssignments(ProfileCourse c)
{
List <SubmisionAssignment> a = null;
//web api call to collect assignments
try
{
var task = AsyncServiceClient.GetAssignmentsForCourse(c.Id, m_authtoken);
a = task.Result;
}
catch (Exception e)
{
//TODO: Handle unknown exception
}
//set assignments to the web api result converted to an array
if (a == null)
{
m_assignments = null;
}
else
{
m_assignments = a.ToArray();
}
}
/// <summary>
/// The function called when a course is selected from the drop down menu.
/// The function will determine the selected course and use it to collect
/// the submission assignment for the course to populate the drop down
/// assignment menu.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void dropDownCourse_SelectionChanged(object sender, RibbonControlEventArgs e)
{
//create course object for the selected course
ProfileCourse c = dropDownCourse.SelectedItem.Tag as ProfileCourse;
//clear drop down assignment menu
dropDownAssignment.Items.Clear();
//update collection of assignments for the selected course
mState.UpdateAssignments(c);
if (mState.Assignments != null && mState.Assignments.Length > 0)
{
//display message in drop down assignment menu
RibbonDropDownItem assignmentBlank = Globals.Factory.GetRibbonFactory().CreateRibbonDropDownItem();
assignmentBlank.Label = "Select an assignment...";
assignmentBlank.Tag = null;
dropDownAssignment.Items.Add(assignmentBlank);
//populate drop down assignment menu
foreach (SubmisionAssignment a in mState.Assignments)
{
RibbonDropDownItem item = Globals.Factory.GetRibbonFactory().CreateRibbonDropDownItem();
item.Label = a.Name;
item.Tag = a;
dropDownAssignment.Items.Add(item);
}
}
else
{
//display no items found error
RibbonDropDownItem assignmentNone = Globals.Factory.GetRibbonFactory().CreateRibbonDropDownItem();
dropDownAssignment.Items.Clear();
assignmentNone.Label = "No Assignments Found";
assignmentNone.Tag = null;
dropDownAssignment.Items.Add(assignmentNone);
}
}
