public void UpdateReadStatus(TreeFeedsNodeBase thisNode, bool anyUnread)
{
if (thisNode == null)
{
return;
}
if (!anyUnread) // mark read
// traverse tree: upwards, one by one. On every step
// look for unread childs (go down). If there is one, stop walking up.
// If not, mark it read (normal font state), go on upwards
{
if (this.Equals(thisNode))
{
// this can happen only once.
// A Feed can only have category/root folder as parents
thisNode.AnyUnread = false;
UpdateReadStatus(thisNode, 0); // correct the counters
}
else // Category/Root mark read
{
thisNode.AnyUnread = false;
UpdateReadStatus(thisNode.Parent, false);
}
}
else // mark unread
// traverse tree: upwards, one by one. On each parent
// mark it unread (bold font state), go on upwards
{
thisNode.AnyUnread = true;
UpdateReadStatus(thisNode.Parent, true);
}
}
/// <summary>
/// Resets the read status starting with this instance Node to zero.
/// </summary>
public void ResetReadStatus()
{
this.UnreadCount = 0;
for (TreeFeedsNodeBase t = this.FirstNode; t != null; t = t.NextNode)
{
t.ResetReadStatus(); // recursive!
}
}
/// <summary>
/// Helper that builds the full path trimmed category name (without root caption)
/// </summary>
/// <param name="node">the FeedTreeNodeBase</param>
/// <returns>
/// Category name in this form:
/// 'Main Category\Sub Category\...\catNode Category'.
/// Returns null in case node was null or no categories are found.
/// </returns>
public static string BuildCategoryStoreName(TreeFeedsNodeBase node)
{
string[] catArray = BuildCategoryStoreNameArray(node);
if (catArray.Length == 0)
{
return(null);
}
return(String.Join(FeedSource.CategorySeparator, catArray));
}
/// <summary>
/// Helper that builds the full path trimmed category name array (without root caption)
/// </summary>
/// <param name="node">the FeedTreeNodeBase</param>
/// <returns>Category names in this form: ['Main Category', 'Sub Category', ...,'catNode Category'].</returns>
public static string[] BuildCategoryStoreNameArray(TreeFeedsNodeBase node)
{
if (node == null)
{
return new string[] {}
}
;
if (node.Type == FeedNodeType.Feed || node.Type == FeedNodeType.Finder)
{
return(TreeHelper.BuildCategoryStoreNameArray(node.FullPath, true));
}
return(TreeHelper.BuildCategoryStoreNameArray(node.FullPath, false));
}
/// <summary>
/// Populates the treeview used as RSS search scope selection.
/// </summary>
/// <param name="sourceRootNode">The source root node.</param>
/// <param name="nodeImages"></param>
public void PopulateTreeRssSearchScope(TreeFeedsNodeBase sourceRootNode, ImageList nodeImages)
{
this.externalScopeRootNode = sourceRootNode;
this.treeRssSearchScope.ImageList = nodeImages;
this.treeRssSearchScope.Nodes.Clear();
if (this.externalScopeRootNode != null)
{
TreeHelper.CopyNodes(this.externalScopeRootNode, this.treeRssSearchScope, true);
}
if (this.treeRssSearchScope.Nodes.Count > 0)
{
this.treeRssSearchScope.Nodes[0].Expand();
}
}
/// <summary>
/// Updates the read status. Works upwards the node hierarchy.
/// </summary>
/// <param name="thisNode">The this node.</param>
/// <param name="readCounter">The read counter.</param>
public void UpdateReadStatus(TreeFeedsNodeBase thisNode, int readCounter)
{
//_log.DebugFormat("called at node {0}, with thisNode = {1}, readCounter = {2}", this.FullPath, thisNode == null ? "null" : thisNode.Text, readCounter);
if (thisNode == null)
{
return;
}
if (readCounter <= 0) // mark read
// traverse tree: upwards, one by one. On every step
// look for unread childs (go down). If there is one, stop walking up.
// If not, mark it read (normal font state), go on upwards
{
if (this.Equals(thisNode))
{
// this can happen only once. A Feed can only have category/root as parents
if (thisNode.UnreadCount < Math.Abs(readCounter))
{
readCounter = -thisNode.UnreadCount;
}
if (readCounter == 0)
{
readCounter = -thisNode.UnreadCount;
}
thisNode.UnreadCount += readCounter;
UpdateReadStatus(thisNode.Parent, readCounter);
}
else // Category/Root mark read
{
thisNode.UnreadCount += readCounter;
UpdateReadStatus(thisNode.Parent, readCounter);
}
}
else // mark unread (readCounter > 0)
// traverse tree: upwards, one by one. On each parent
// mark it unread (bold font state), go on upwards
{
if (!thisNode.HasNodes /*thisNode.Type != FeedNodeType.Root && thisNode.Type != FeedNodeType.Category */)
{
// this can happen only once.
// A Feed can only have category/root as parents
// we assume here, that the readCounter is a "reset"
// of the current node.UnreadCounter to the new value.
// So at first we have to correct all the parents
UpdateReadStatus(thisNode.Parent, -thisNode.UnreadCount);
thisNode.UnreadCount = readCounter;
}
else
{
thisNode.UnreadCount += readCounter;
}
// now we had set the new value, refresh the parent(s)
UpdateReadStatus(thisNode.Parent, readCounter);
}
}
public void InitFromFinders(ArrayList finderList, ContextMenuStrip menu)
{
var categories = new Hashtable();
foreach (RssFinder finder in finderList)
{
TreeFeedsNodeBase parent = this;
finder.Container = null; // may contain old node references on a re-populate call
if (finder.FullPath.IndexOf(FeedSource.CategorySeparator) > 0)
{
// one with category
string[] a = finder.FullPath.Split(FeedSource.CategorySeparator.ToCharArray());
int aLen = a.GetLength(0);
string sCat = String.Join(FeedSource.CategorySeparator, a, 0, aLen - 1);
if (categories.ContainsKey(sCat))
{
parent = (TreeFeedsNodeBase)categories[sCat];
}
else
{
// create category/categories
var sb = new StringBuilder();
sb.Append(a[0]);
for (int i = 0; i <= aLen - 2; i++)
{
sCat = sb.ToString();
if (categories.ContainsKey(sCat))
{
parent = (TreeFeedsNodeBase)categories[sCat];
}
else
{
TreeFeedsNodeBase cn = new FinderCategoryNode(a[i], 2, 3, menu); // menu???
categories.Add(sCat, cn);
parent.Nodes.Add(cn);
// cn.Cells[0].Value = cn.Text;
// cn.Cells[0].Appearance.Image = cn.Override.NodeAppearance.Image;
// cn.Cells[0].Appearance.Cursor = WinGuiMain.CursorHand;
parent = cn;
}
sb.Append(FeedSource.CategorySeparator + a[i + 1]);
}
}
}
var n = new FinderNode(finder.Text, 10, 10, menu)
{
Finder = finder
};
finder.Container = n;
parent.Nodes.Add(n);
// n.Cells[0].Value = n.Text;
// n.Cells[0].Appearance.Image = n.Override.NodeAppearance.Image;
// n.Cells[0].Appearance.Cursor = WinGuiMain.CursorHand;
} //foreach finder
}
