public void AddToFavorites()
{
base.ThrowIfCannotActAsOwner();
OwaStoreObjectId owaStoreObjectId = (OwaStoreObjectId)base.GetParameter("Id");
if (owaStoreObjectId.OwaStoreObjectIdType != OwaStoreObjectIdType.MailBoxObject && owaStoreObjectId.OwaStoreObjectIdType != OwaStoreObjectIdType.ArchiveMailboxObject)
{
throw new OwaInvalidRequestException("Only mailbox objects can be added to favorites.");
}
using (Folder folder = Utilities.GetFolder <Folder>(base.UserContext, owaStoreObjectId, FolderList.FolderTreeQueryProperties))
{
if (Utilities.IsDefaultFolder(folder, DefaultFolderType.Root))
{
throw new OwaInvalidRequestException("Cannot add root folder to favorites.");
}
if (!string.IsNullOrEmpty(folder.ClassName) && !ObjectClass.IsOfClass(folder.ClassName, "IPF.Note"))
{
throw new OwaInvalidRequestException("Only mail folder can be added to favorites.");
}
if (Utilities.IsDefaultFolder(folder, DefaultFolderType.SearchFolders))
{
throw new OwaInvalidRequestException("Cannot add search folder root to favorites.");
}
NavigationNodeCollection navigationNodeCollection = NavigationNodeCollection.TryCreateNavigationNodeCollection(base.UserContext, base.UserContext.MailboxSession, NavigationNodeGroupSection.First);
navigationNodeCollection.RemoveFolderByLegacyDNandId(((MailboxSession)folder.Session).MailboxOwnerLegacyDN, owaStoreObjectId.StoreObjectId);
if (base.IsParameterSet("tgtid"))
{
StoreObjectId storeObjectId = (StoreObjectId)base.GetParameter("tgtid");
}
if (base.IsParameterSet("tgtid"))
{
int num = navigationNodeCollection[0].Children.FindChildByNodeId((StoreObjectId)base.GetParameter("tgtid"));
if (num < 0)
{
base.RenderPartialFailure(817935633, OwaEventHandlerErrorCode.NotSet);
}
else
{
if (base.IsParameterSet("mt"))
{
int num2 = (int)base.GetParameter("mt");
if (num2 != 1 && num2 != 2)
{
throw new OwaInvalidRequestException("Only before or after is valid.");
}
if (num2 == 2)
{
num++;
}
}
navigationNodeCollection.InsertMyFolderToFavorites(folder, num);
}
}
else
{
navigationNodeCollection.AppendFolderToFavorites(folder);
}
navigationNodeCollection.Save(base.UserContext.MailboxSession);
}
NavigationHost.RenderFavoritesAndNavigationTrees(this.Writer, base.UserContext, null, new NavigationNodeGroupSection[]
{
NavigationNodeGroupSection.First
});
}