async Task <ViewModelBase> MapThing(Thing thing, ViewModelBase parent)
{
if (thing.Data is More)
{
var depth = 0;
if (parent is CommentViewModel)
{
depth = ((CommentViewModel)parent).Depth + 1;
}
var more = new MoreViewModel(_baconProvider, ((More)thing.Data).Children, _targetName, _subreddit, RunLoadMore, parent as CommentViewModel, depth);
more.Parent = parent as CommentViewModel;
return(more);
}
else if (thing.Data is Link)
{
return(new LinkViewModel(thing, _baconProvider));
}
else if (thing.Data is Comment)
{
var oddNesting = false;
var depth = 0;
if (parent is CommentViewModel)
{
oddNesting = !((CommentViewModel)parent).OddNesting;
depth = ((CommentViewModel)parent).Depth + 1;
}
var commentViewModel = new CommentViewModel(_baconProvider, thing, ((Comment)thing.Data).LinkId, oddNesting, depth);
commentViewModel.Replies = new ObservableCollection <ViewModelBase>(await MapListing(((Comment)thing.Data).Replies, commentViewModel));
commentViewModel.Parent = parent as CommentViewModel;
return(commentViewModel);
}
else
{
return(null);
}
}
public MoreInfoWindow(ProcessList process)
{
InitializeComponent();
DataContext = new MoreViewModel(process);
}
public async Task LoadMore(MoreViewModel target)
{
List<ViewModelBase> flatChilden = new List<ViewModelBase>();
string moreId = null;
await SnooStreamViewModel.NotificationService.Report("loading more comments", async () =>
{
var listing = await SnooStreamViewModel.RedditService.GetMoreOnListing(new More { Children = target.Ids, ParentId = target.ParentId, Count = target.Count }, Link.Link.Id, Link.Link.Subreddit);
lock(this)
{
FixupParentage(listing);
var firstChild = listing.Data.Children.FirstOrDefault(thing => thing.Data is Comment);
if(firstChild == null)
return;
var parentId = ((Comment)firstChild.Data).ParentId;
CommentShell parentShell;
if (!_comments.TryGetValue(parentId.Replace("t1_", ""), out parentShell))
{
parentShell = null;
}
MergeComments(parentShell, listing.Data.Children, parentShell == null ? 0 : parentShell.Comment.Depth + 1);
moreId = ((Comment)firstChild.Data).Id;
InsertIntoFlatList(moreId, flatChilden);
foreach (var child in flatChilden)
{
_knownUnloaded.Remove(GetId(child));
}
}
});
if (moreId != null)
MergeDisplayChildren(flatChilden, target.Ids);
else
FlatComments.Remove(target);
}
private void MergeComments(CommentShell parent, IEnumerable<Thing> things, int depth = 0)
{
CommentShell priorSibling = parent != null ? LastChild(parent) : null;
MoreViewModel priorMore = null;
foreach (var child in things)
{
if(child.Data is More && ((More)child.Data).Children.Count > 0)
{
if(priorMore != null)
{
priorMore.Ids.AddRange(((More)child.Data).Children);
priorMore.Count += ((More)child.Data).Count;
}
else
{
var firstId = ((More)child.Data).Children.First();
if (priorSibling == null) //need to attach to parent
{
parent.FirstChild = firstId;
}
else
{
priorSibling.NextSibling = firstId;
}
if (!_knownUnloaded.ContainsKey(firstId))
{
priorMore = new MoreViewModel(this, parent != null ? parent.Id : null, firstId, ((More)child.Data).Children,((More)child.Data).Count, depth );
_knownUnloaded.Add(firstId, priorMore);
}
}
}
else if (child.Data is Comment)
{
priorMore = null;
var commentId = ((Comment)child.Data).Id;
if (priorSibling == null && parent == null)
{
if (_firstChild != null)
{
priorSibling = LastSibling(_comments[_firstChild]);
}
else
{
_firstChild = commentId;
}
}
if (priorSibling == null && parent != null) //need to attach to parent
{
parent.FirstChild = commentId;
}
else if (priorSibling != null)
{
priorSibling.NextSibling = commentId;
}
if (!_comments.ContainsKey(commentId))
{
priorSibling = MakeCommentShell(child.Data as Comment, depth, priorSibling);
_comments.Add(commentId, priorSibling);
}
else
{
var current = _comments[commentId];
current.PriorSibling = priorSibling != null ? priorSibling.Id : null;
current.NextSibling = null;
priorSibling = current;
MergeComment(priorSibling, child.Data as Comment);
}
var replies = ((Comment)child.Data).Replies;
if (replies != null)
MergeComments(priorSibling, replies.Data.Children, depth + 1);
}
}
}
public MorePage()
{
InitializeComponent();
ViewModel = new MoreViewModel();
BindingContext = ViewModel;
}
public More(string id)
{
InitializeComponent();
this.BindingContext = moreViewModel = new MoreViewModel(id);
}
