//respond to an item dropped in my treeview
protected override void OnDragDrop(DragEventArgs e)
{
base.OnDragDrop(e);
TmTreeNode destinationTreeNode = NodeAtEvent(e);
TmNode destinationNode = null;
if (destinationTreeNode != null)
destinationNode = destinationTreeNode.TmNode;
// TmNodeList drop
if (e.Data.GetDataPresent("TmNodeList", false))
{
List<TmNode> nodes = e.Data.GetData("TmNodeList") as List<TmNode>;
if (nodes != null && nodes.Count() > 0)
{
foreach (TmNode node in nodes)
{
if (e.Effect == DragDropEffects.Move)
MoveNode(destinationNode, node);
if (e.Effect == DragDropEffects.Copy)
CopyNode(destinationNode, node);
}
if (e.Effect != DragDropEffects.None)
{
//SelectNode(destinationTreeNode);
destinationTreeNode.Expand();
return;
}
}
}
// TmNode drop
if (e.Data.GetDataPresent("TmNode", false))
{
// e.Effect == none for illeagal drops.
TmNode oldNode = e.Data.GetData("TmNode") as TmNode;
Debug.Assert(oldNode != null, "Could not reserialize node from clipboard");
if (oldNode != null)
{
if (e.Effect == DragDropEffects.Move)
MoveNode(destinationNode, oldNode);
if (e.Effect == DragDropEffects.Copy)
CopyNode(destinationNode, oldNode);
if (e.Effect != DragDropEffects.None)
{
//SelectNode(destinationTreeNode);
destinationTreeNode.Expand();
return;
}
}
}
// FileDrop
if (e.Data.GetDataPresent(DataFormats.FileDrop))
{
string[] files = (string[])e.Data.GetData(DataFormats.FileDrop);
TmTreeNode newTreeNode = null;
foreach (string file in files)
{
//FIXME - determine if this is a Theme or a ThemeList
//currently assuming it is a theme.
TmNode newNode = new ThemeNode(Path.GetFileNameWithoutExtension(file), file);
try
{
// May need to load to query arc objects which could throw any number of exceptions.
newNode.Reload();
}
catch (Exception ex)
{
MessageBox.Show("Unable to load the theme properties" + ex);
}
if (destinationNode == null)
newTreeNode = Add(newNode);
else
destinationNode.Add(newNode);
}
if (newTreeNode != null)
SelectNode(newTreeNode);
else
{
SelectNode(destinationTreeNode);
destinationTreeNode.Expand();
}
return;
}
// Text Drop
if (e.Data.GetDataPresent(DataFormats.Text))
{
string txt = (string)e.Data.GetData(DataFormats.Text);
TmNode newNode = new CategoryNode(txt);
if (destinationNode == null)
SelectNode(Add(newNode));
else
{
destinationNode.Add(newNode);
SelectNode(destinationTreeNode);
destinationTreeNode.Expand();
}
}
}
//Also called from the search form.
internal void DisplaySearchResults(SearchParameters searchParams, IEnumerable<TmNode> results)
{
//I need to cache the enumeration for two reasons:
// 1: I access the enumeration to get the count, and to access the nodes.
// A new search is done each time the enumeration is iterated (even for counting).
// 2: The enumeration searches the treeviews _selected nodes.
// I clear the searchtrees selected node when I create the results,
// therefore no results are returned if the search was done on the search tree.
IList<TmNode> nodes = results.ToList();
if (nodes == null || nodes.Count == 0)
MessageBox.Show(string.Format("Sorry, your search for '{0}' in {1} has no results.",
searchParams.Description, searchParams.Location));
else
{
string resultsNodeLabel = string.Format("{0} result{1} for '{2}' in {3}",
nodes.Count, nodes.Count == 1 ? "" : "s", searchParams.Label, searchParams.Location);
searchTreeView.BeginUpdate();
searchTreeView.ClearSelectedNodes();
TmNode catNode = new CategoryNode(resultsNodeLabel);
TmTreeNode newNode = searchTreeView.Add(catNode);
if (newNode == null)
{
MessageBox.Show("Unable to add results to display");
return;
}
foreach (TmNode node in nodes)
catNode.Add(node.DeepCopy());
searchTreeView.SelectNode(newNode);
newNode.Expand();
searchTreeView.EndUpdate();
CurrentTreeView = searchTreeView;
}
}
private void PopulateCategoryPropertyPanel(PropertiesForm form, CategoryNode node)
{
Debug.Assert(node.Metadata != null, "TMNode node has no metadata object");
form.categoryName.DataBindings.Clear();
form.categoryMetadata.DataBindings.Clear();
form.categoryDescription.DataBindings.Clear();
form.categoryName.DataBindings.Add(new Binding("Text", node, "Name"));
form.categoryMetadata.DataBindings.Add(new Binding("Text", node.Metadata, "Path"));
form.categoryDescription.DataBindings.Add(new Binding("Text", node, "Description"));
}
private void LoadTreeFromXML(XElement xele, TmTreeView tv)
{
TmNode node;
foreach (XElement xnode in xele.Elements(ThemeListNode.TypeString))
{
node = new ThemeListNode();
node.Load(xnode, false); // Add only the first node
tv.Add(node);
}
foreach (XElement xnode in xele.Elements(CategoryNode.TypeString))
{
node = new CategoryNode();
node.BeginUpdate();
node.Load(xnode, true); // Add entire branch
node.UpdateAge();
node.EndUpdate();
tv.Add(node);
}
foreach (XElement xnode in xele.Elements(ThemeNode.TypeString))
{
node = new ThemeNode();
node.BeginUpdate();
node.Load(xnode, true); // Add entire branch
node.UpdateAge();
node.EndUpdate();
tv.Add(node);
}
tv.TextSortInit((string)xele.Attribute("sortorder"));
}
public void Load(XElement xele, bool recurse)
{
if (xele == null)
throw new ArgumentNullException("xele");
//Kind was already set when node was created. Set all other properties
Name = (string)xele.Attribute("name");
XElement data = xele.Element("tags");
Tags = data == null ? null : data.Value;
data = xele.Element("summary");
Summary = data == null ? null : data.Value;
data = xele.Element("description");
Description = data == null ? null : data.Value;
data = xele.Element("pubdate");
if (data != null)
{
DateTime temp;
if (DateTime.TryParse(data.Value, out temp))
if (this is ThemeNode)
((ThemeNode)this).PubDate = temp;
}
data = xele.Element("data");
if (data != null)
{
// Ignore data elements for themelists.
var themeNode = this as ThemeNode;
if (themeNode != null)
(themeNode).Data = ThemeData.Load(data);
var themeListNode = this as ThemeListNode;
if (themeListNode != null)
(themeListNode).FilePath = data.Value;
}
data = xele.Element("metadata");
if (data != null)
Metadata = Metadata.Load(data);
if (recurse)
{
TmNode childNode;
foreach (XElement xnode in xele.Elements(CategoryNode.TypeString))
{
childNode = new CategoryNode();
Add(childNode);
childNode.Load(xnode);
}
foreach (XElement xnode in xele.Elements(ThemeNode.TypeString))
{
if (this is SubThemeNode || this is ThemeNode)
childNode = new SubThemeNode();
else
childNode = new ThemeNode();
Add(childNode);
childNode.Load(xnode);
}
}
}
