/// <summary>Creates an assignment folder.</summary>
/// <returns>The created folder or null if it already exists.</returns>
public AssignmentFolder CreateSelfAssignmentFolder()
{
AssignmentFolder assignmentFolder = null;
SPSecurity.RunWithElevatedPrivileges(delegate
{
using (SPSite spSite = new SPSite(assignmentProperties.SPSiteGuid))
{
using (SPWeb spWeb = spSite.OpenWeb(assignmentProperties.SPWebGuid))
{
DropBox dropBox = new DropBox(store, spWeb);
//Get the folder if it exists
assignmentFolder = dropBox.GetAssignmentFolder(assignmentProperties);
//Create the assignment folder if it does not exist
if (assignmentFolder == null)
{
assignmentFolder = dropBox.CreateAssignmentFolder(assignmentProperties);
assignmentFolder.ApplyPermission(CurrentUser, SPRoleType.Reader);
assignmentFolder.CreateLearnerAssignmentFolder(CurrentUser);
}
else
{
assignmentFolder = null;
}
}
}
});
return assignmentFolder;
}
/// <summary>Creates an assignment folder.</summary>
public void CreateAssignmentFolder()
{
Microsoft.SharePoint.Utilities.SPUtility.ValidateFormDigest();
SPSecurity.RunWithElevatedPrivileges(delegate
{
using (SPSite spSite = new SPSite(assignmentProperties.SPSiteGuid))
{
using (SPWeb spWeb = spSite.OpenWeb(assignmentProperties.SPWebGuid))
{
DropBox dropBox = new DropBox(store, spWeb);
//Get the folder if it exists
if (dropBox.GetAssignmentFolder(assignmentProperties) != null)
{
throw new SafeToDisplayException(culture.Resources.AssFolderAlreadyExists);
}
AssignmentFolder assignmentFolder = dropBox.CreateAssignmentFolder(assignmentProperties);
ApplyInstructorsReadAccessPermissions(assignmentFolder, spWeb, dropBox);
//Create a Subfolder for each learner
foreach (SlkUser learner in assignmentProperties.Learners)
{
SPUser spLearner = learner.SPUser;
assignmentFolder.ApplyPermission(spLearner, SPRoleType.Reader);
AssignmentFolder.ApplySharePointPermission(spWeb, dropBox.DropBoxList, learner.SPUser, SPRoleType.Reader);
assignmentFolder.CreateLearnerAssignmentFolder(spLearner);
}
}
}
});
}
/// <summary>Applies permissions to the learner folder and creates it if required.</summary>
/// <param name="user">The learner to create the folder for.</param>
/// <param name="learnerPermissions">The permissions to set.</param>
/// <param name="instructorPermissions">The instructor permissions to set.</param>
/// <param name="removeObserverPermissions">Whether to remove observer permissions or not.</param>
void ApplyAssignmentPermission(SPUser user, SPRoleType learnerPermissions, SPRoleType instructorPermissions, bool removeObserverPermissions)
{
SPSecurity.RunWithElevatedPrivileges(delegate
{
using (SPSite spSite = new SPSite(assignmentProperties.SPSiteGuid))
{
using (SPWeb spWeb = spSite.OpenWeb(assignmentProperties.SPWebGuid))
{
DropBox dropBox = new DropBox(store, spWeb);
AssignmentFolder assignmentFolder = dropBox.GetAssignmentFolder(assignmentProperties);
if (assignmentFolder != null)
{
// Get the learner sub folder
AssignmentFolder learnerSubFolder = assignmentFolder.FindLearnerFolder(user);
if (learnerSubFolder == null)
{
learnerSubFolder = assignmentFolder.CreateLearnerAssignmentFolder(user);
}
// Apply learner permissions
learnerSubFolder.RemovePermissions(user);
if (learnerPermissions != SPRoleType.None)
{
learnerSubFolder.ApplyPermission(user, learnerPermissions);
}
// Apply instructor permissions
foreach (SlkUser instructor in assignmentProperties.Instructors)
{
learnerSubFolder.RemovePermissions(instructor.SPUser);
learnerSubFolder.ApplyPermission(instructor.SPUser, instructorPermissions);
}
if (removeObserverPermissions)
{
learnerSubFolder.RemoveObserverPermission();
}
}
}
}
});
}
/// <summary>Uploads files to the learner's drop box.</summary>
/// <param name="files">The files to upload.</param>
/// <param name="existingFilesToKeep">Existing files to keep.</param>
public void UploadFiles(AssignmentUpload[] files, int[] existingFilesToKeep)
{
SPUser currentUser = CurrentUser;
SPSecurity.RunWithElevatedPrivileges(delegate
{
using (SPSite spSite = new SPSite(assignmentProperties.SPSiteGuid))
{
spSite.CatchAccessDeniedException = false;
using (SPWeb spWeb = spSite.OpenWeb(assignmentProperties.SPWebGuid))
{
DropBox dropBox = new DropBox(store, spWeb);
AssignmentFolder assignmentFolder = dropBox.GetOrCreateAssignmentFolder(assignmentProperties);
assignmentFolder.ApplyPermission(currentUser, SPRoleType.Reader);
AssignmentFolder learnerSubFolder = assignmentFolder.FindLearnerFolder(currentUser);
if (learnerSubFolder == null)
{
learnerSubFolder = assignmentFolder.CreateLearnerAssignmentFolder(currentUser);
}
else
{
learnerSubFolder.ResetIsLatestFiles(existingFilesToKeep, currentUser.ID);
}
CheckExtensions(spSite, files);
using (new AllowUnsafeUpdates(spWeb))
{
SlkUser currentSlkUser = new SlkUser(currentUser);
foreach (AssignmentUpload upload in files)
{
learnerSubFolder.SaveFile(upload.Name, upload.Stream, currentSlkUser);
}
}
ApplySubmittedPermissions(spWeb);
}
}
});
}
/// <summary>Function to update the DropBox document library after the current assignment being edited</summary>
/// <param name="oldAssignmentProperties">The old assignment properties</param>
public void UpdateAssignment(AssignmentProperties oldAssignmentProperties)
{
SPSecurity.RunWithElevatedPrivileges(delegate
{
using (SPSite spSite = new SPSite(assignmentProperties.SPSiteGuid))
{
using (SPWeb spWeb = spSite.OpenWeb(assignmentProperties.SPWebGuid))
{
using (new AllowUnsafeUpdates(spWeb))
{
DropBox dropBox = new DropBox(store, spWeb);
string oldAssignmentFolderName = DropBox.GenerateFolderName(oldAssignmentProperties);
string newAssignmentFolderName = DropBox.GenerateFolderName(assignmentProperties);
// If assignment title has been changed, create a new assignment folder and move old assignment folder contents to it
if (string.Compare(oldAssignmentFolderName, newAssignmentFolderName, true, CultureInfo.InvariantCulture) != 0)
{
dropBox.ChangeFolderName(oldAssignmentFolderName, newAssignmentFolderName);
}
// Get new assignment folder, or the old one if the title has not been changed
// in both cases, the value of the current assignment folder name will be stored in newAssignmentFolderName
AssignmentFolder assignmentFolder = dropBox.GetAssignmentFolder(assignmentProperties);
if (assignmentFolder != null)
{
assignmentFolder.RemoveAllPermissions();
// Grant assignment instructors Read permission on the assignment folder
ApplyInstructorsReadAccessPermissions(assignmentFolder, spWeb, dropBox);
// Delete subfolders of the learners who have been removed from the assignment
DeleteRemovedLearnerFolders(assignmentFolder, oldAssignmentProperties);
foreach (SlkUser learner in assignmentProperties.Learners)
{
// Grant assignment learners Read permission on the assignment folder and drop box
assignmentFolder.ApplyPermission(learner.SPUser, SPRoleType.Reader);
AssignmentFolder.ApplySharePointPermission(spWeb, dropBox.DropBoxList, learner.SPUser, SPRoleType.Reader);
AssignmentFolder learnerSubFolder = assignmentFolder.FindLearnerFolder(learner.SPUser);
LearnerAssignmentProperties result = assignmentProperties.ResultForLearner(learner);
if (learnerSubFolder == null)
{
// Create a new subfolder for this learner
learnerSubFolder = assignmentFolder.CreateLearnerAssignmentFolder(learner.SPUser);
}
if (result != null)
{
AssignUpdatePermissions(learnerSubFolder, learner.SPUser, result.Status);
}
}
}
}
}
}
});
}
