/// <summary>
/// Moves the current FeedNode from one folder to another.
/// </summary>
/// <param name="fnDest">Destination folder that this FeedNode will be moved to.</param>
/// <returns></returns>
public bool MoveTo(FeedNode fnDest, System.Windows.Forms.TreeView tvFeeds)
{
Debug.WriteLine(String.Format("MoveTo() {0} -> {1}", this.ToString(), fnDest.ToString()));
if (fnDest.IsFolder == false)
{
return(false); // Can't move into anything else than a folder.
}
if (m_parent == fnDest)
{
return(false); // The FeedNode can't be moved into the same folder it already is in.
}
TreeNode tnOld = (TreeNode)Tag;
tnOld.Remove(); // remove the treenode from the old folder
m_parent.DeleteChildNode(this); // remove the feednode from this folder
m_parent = fnDest; // parent this node to the destination feednode
fnDest.AddChildNode(this); // add this node to the destination feednode
TreeNode tnDest = (TreeNode)fnDest.Tag; // the destination folder's treenode
tnDest.Nodes.Clear();
fnDest.PopulateTreeNodes(tnDest, tvFeeds);
return(true);
}
/// <summary>
/// Populates the tree nodes of the current FeedNode.
/// Recursive method to generate the TreeView tree structure
/// in accordance to the FeedNode tree structure.
/// </summary>
/// <param name="crtTreeNode">TreeNode with which this FeedNode is to be associated with.</param>
public void PopulateTreeNodes(TreeNode crtTreeNode, System.Windows.Forms.TreeView tvFeeds)
{
if ((m_parent == null) && (crtTreeNode == null))
{ // root node?
TreeNode treeNode = tvFeeds.Nodes.Add(m_strTitle);
treeNode.Tag = this;
this.Tag = treeNode;
crtTreeNode = treeNode;
}
IDictionaryEnumerator enumNodes = this.Enumerator;
while (enumNodes.MoveNext())
{
FeedNode feedNode = (FeedNode)enumNodes.Key;
if (feedNode != null)
{
TreeNode treeNode = crtTreeNode.Nodes.Add(feedNode.Title);
treeNode.Tag = feedNode;
feedNode.Tag = treeNode;
if (feedNode.IsFolder)
{
treeNode.ImageIndex = 0;
treeNode.SelectedImageIndex = 0;
feedNode.PopulateTreeNodes(treeNode, tvFeeds);
}
else
{
treeNode.ImageIndex = 1;
treeNode.SelectedImageIndex = 1;
}
}
}
}
