// Deletes every content item and reference from exhibit with given guid.
public void DeleteExhibit(Guid id)
{
var exhibitsIDs = GetChildContentItemsIds(id); // list of ids of content items
// delete content items
while (exhibitsIDs.Count != 0)
{
var e = this.ContentItems.Find(exhibitsIDs.First());
this.ContentItems.Remove(e);
exhibitsIDs.RemoveAt(0);
}
Exhibit deleteExhibit = this.Exhibits.Find(id);
this.Exhibits.Remove(deleteExhibit);
}
public string ImportExhibit(Guid intoTimelineId, Exhibit newExhibit)
{
Timeline target = _storage.Timelines.Where(t => t.Id == intoTimelineId).Include("Collection").FirstOrDefault();
DateTime timestamp = DateTime.UtcNow;
try
{
if (target == null) { return "The destination timeline, \"" + intoTimelineId.ToString() + "\", where you want to paste to, does not exist."; }
if (_user == null) { return "In order to change a timeline, you must first be logged in."; }
if (!UserIsMember(target.Collection.Id)) { return "You do not have permission to alter the \"" + target.Title + "\" timeline."; }
if (newExhibit.Year < target.FromYear || newExhibit.Year > target.ToYear)
{
return "Unable to paste \"" + newExhibit.Title + "\" into \"" + target.Title + "\", since " +
newExhibit.Title + "'s date exceeds that of " + target.Title + ".";
}
// replace GUIDs with new ones since we're cloning rather than moving - and set collection ids to target collection
// keep cross-reference between old and new timelineIds so child timelines can maintain a pointer to their parents
Guid newGUID = Guid.NewGuid();
newExhibit.Id = newGUID;
newExhibit.Collection = target.Collection;
newExhibit.UpdatedBy = _user;
newExhibit.UpdatedTime = timestamp;
if (target.Exhibits == null)
{
target.Exhibits = new System.Collections.ObjectModel.Collection<Exhibit>();
}
for (int eachItem = 0; eachItem < newExhibit.ContentItems.Count; eachItem++)
{
newExhibit.ContentItems[eachItem].Id = Guid.NewGuid();
newExhibit.ContentItems[eachItem].Collection = target.Collection;
}
target.Exhibits.Add(newExhibit);
_storage.SaveChanges();
}
catch (Exception ex)
{
Debug.WriteLine(ex);
return "Unable to import the exhibit. An unexpected error has occured. " +
"Please feel free to try again.";
}
return "\"" + newExhibit.Title + "\" has been pasted into \"" + target.Title + "\". " +
"You may need to refresh your browser in order to see any new content.";
}
//used if creating timeline objects instead of flat json objects
private static Exhibit createExhibit(Timeline j, String URL, Collection col)
{
Exhibit e = new Exhibit();
e.Id = Guid.NewGuid();
e.Title = j.Title + " - Exhibit"; //todo
e.Threshold = "8. Origins of modern world"; //todo
e.Regime = "Humanity"; //todo
e.TimeUnit = "ce";
e.Day = j.FromDay;
e.Month = j.FromMonth;
e.Year = j.FromYear;
e.Sequence = 100;
e.UniqueId = my_exhibit_count++;
e.Collection = col;
e.ContentItems = new System.Collections.ObjectModel.Collection<ContentItem>();
for (int i = 0; i < 4; i++)
{
ContentItem c = new ContentItem();
c.Id = Guid.NewGuid();
c.UniqueId = my_contentitem_count++;
c.Title = j.Title + "- ContentItem";
c.Threshold = "8. Origins of modern world";
c.Regime = "Humanity";
c.TimeUnit = "ce";
c.Year = j.ToYear;
c.Order = 1; //todo
c.HasBibliography = false; //todo
c.MediaSource = "Library of Congress"; //todo
c.Attribution = "Library of Congress"; //todo
c.Collection = col;
switch (i)
{
case 0:
{
c.Caption = j.Title + "- JP2";
c.MediaType = "JP2";
c.Uri = URL + ".jp2";
break;
}
case 1:
{
c.Caption = j.Title + "- TXT";
c.MediaType = "TXT";
c.Uri = URL + "/ocr.txt";
break;
}
case 2:
{
c.Caption = j.Title + "- PDF";
c.MediaType = "PDF";
c.Uri = URL + ".pdf";
break;
}
case 3:
{
c.Caption = j.Title + "- OCR";
c.MediaType = "OCR";
c.Uri = URL + "/ocr.xml";
break;
}
}
// Insert into db here
dbInst.ContentItems.Add(c);
e.ContentItems.Add(c);
}
dbInst.Exhibits.Add(e);
return e;
}