public TreeListNode()
{
subitems = new ContainerSubListViewItemCollection();
subitems.ItemsChanged += new ItemsChangedEventHandler(OnSubItemsChanged);
nodes = new TreeListNodeCollection();
nodes.Owner = this;
nodes.MouseDown += new MouseEventHandler(OnSubNodeMouseDown);
}
public TreeListView()
: base()
{
virtualParent = new TreeListNode();
nodes = virtualParent.Nodes;
nodes.Owner = virtualParent;
nodes.MouseDown += new MouseEventHandler(OnSubControlMouseDown);
nodes.NodesChanged += new EventHandler(OnNodesChanged);
selectedNodes = new TreeListNodeCollection();
nodeRowRects = new ListDictionary();
pmRects = new ListDictionary();
// Use reflection to load the
// embedded bitmaps for the
// styles plus and minus icons
Assembly myAssembly = Assembly.GetAssembly(Type.GetType("ExtendedListView.Forms.TreeListView"));
Stream bitmapStream1 = myAssembly.GetManifestResourceStream("ExtendedListView.Forms.Resources.tv_minus.bmp");
bmpMinus = new Bitmap(bitmapStream1);
Stream bitmapStream2 = myAssembly.GetManifestResourceStream("ExtendedListView.Forms.Resources.tv_plus.bmp");
bmpPlus = new Bitmap(bitmapStream2);
}
private TreeListNodeCollection GetSelectedNodes(TreeListNode node)
{
TreeListNodeCollection list = new TreeListNodeCollection();
for (int i=0; i<node.Nodes.Count; i++)
{
// check if current node is selected
if (node.Nodes[i].Selected)
{
list.Add(node.Nodes[i]);
}
// chech if node is expanded and has
// selected children
if (node.Nodes[i].IsExpanded)
{
TreeListNodeCollection list2 = GetSelectedNodes(node.Nodes[i]);
for (int j=0; j<list2.Count; j++)
{
list.Add(list2[i]);
}
}
}
return list;
}
private void UnselectNodes(TreeListNodeCollection nodecol)
{
for (int i=0; i<nodecol.Count; i++)
{
UnselectNodes(nodecol[i].Nodes);
nodecol[i].Focused = false;
nodecol[i].Selected = false;
}
}
private void AutoSetColWidth(TreeListNodeCollection nodes, ref int mwid, ref int twid, int i)
{
for (int j=0; j<nodes.Count; j++)
{
if (i > 0 && nodes[j].SubItems[i - 1]!=null)
twid = GetStringWidth(nodes[j].SubItems[i-1].Text);
else
twid = GetStringWidth(nodes[j].Text);
twid += 5;
if (twid > mwid)
mwid = twid;
if (nodes[j].Nodes.Count > 0)
{
AutoSetColWidth(nodes[j].Nodes, ref mwid, ref twid, i);
}
}
}
