static void BuildTree(IFolderContext context, Folder folder, int maxItems, ref int descIndex, ref int nodeIndex)
{
var nodes = context.Nodes;
var descriptors = context.Folders;
while (folder.Items.Count < maxItems)
{
var d = descIndex < descriptors.Count ? descriptors[descIndex] : null;
if (nodeIndex < nodes.Count && (d == null || nodeIndex < d.Index))
{
folder.Items.Add(nodes[nodeIndex++]);
}
else if (d != null)
{
descIndex++;
var subFolder = new Folder {
Id = d.Id, Expanded = d.Expanded
};
folder.Items.Add(subFolder);
BuildTree(context, subFolder, d.ItemCount, ref descIndex, ref nodeIndex);
}
else
{
break;
}
}
}
public void SyncDescriptorsAndNodes(IFolderContext context)
{
context.Nodes.Clear();
context.Folders = new List <Descriptor>();
SyncDescriptorsAndNodes(context, this);
if (context.Folders.Count == 0)
{
context.Folders = null;
}
}
public static Folder BuildTree(IFolderContext context)
{
var root = new Folder {
Expanded = true
};
if (context.Folders == null || context.Folders.Count == 0)
{
root.Items.AddRange(context.Nodes);
}
else
{
int descIndex = 0;
int nodeIndex = 0;
BuildTree(context, root, int.MaxValue, ref descIndex, ref nodeIndex);
}
return(root);
}
private static void SyncDescriptorsAndNodes(IFolderContext context, Folder folder)
{
foreach (var i in folder.Items)
{
if (i is Node)
{
context.Nodes.Add((Node)i);
}
else if (i is Folder)
{
var subFolder = (Folder)i;
context.Folders.Add(new Descriptor {
Id = subFolder.Id,
Expanded = subFolder.Expanded,
Index = context.Nodes.Count,
ItemCount = subFolder.Items.Count
});
SyncDescriptorsAndNodes(context, subFolder);
}
}
}
public FolderGetOperations()
{
_folderContext = DbContext.FolderContext;
}
public FolderWriteOperations()
{
_folderContext = DbContext.FolderContext;
}
public FolderController(IFolderContext folderContext)
{
_folderContext = folderContext;
}
