internal bool HasChildNode(IExplorerObject exObject)
{
if (exObject == null)
{
return(true);
}
TreeNode node = treeView.SelectedNode;
if (node == null)
{
return(true);
}
node.Expand();
foreach (TreeNode n in node.Nodes)
{
if (!(n is ExplorerObjectNode))
{
continue;
}
IExplorerObject ex = ((ExplorerObjectNode)n).ExplorerObject;
if (ex == null)
{
continue;
}
if (ExObjectComparer.Equals(ex, exObject))
{
return(true);
}
}
return(false);
}
public void DeleteItem(IExplorerObject exObject)
{
foreach (ExplorerObjectListViewItem item in listView.Items)
{
if (ExObjectComparer.Equals(exObject, item.ExplorerObject))
{
listView.Items.Remove(item);
}
}
}
async internal Task <IExplorerObject> AddChildNode(IExplorerObject exObject)
{
if (!(treeView.SelectedNode is ExplorerObjectNode) || exObject == null)
{
return(exObject);
}
ExplorerObjectNode node = treeView.SelectedNode as ExplorerObjectNode;
if (node.ExplorerObject is IExplorerParentObject)
{
await((IExplorerParentObject)node.ExplorerObject).Refresh();
foreach (IExplorerObject child in await((IExplorerParentObject)node.ExplorerObject).ChildObjects())
{
if (ExObjectComparer.Equals(child, exObject))
{
exObject = child;
break;
}
}
}
if (exObject is IExplorerObjectDeletable)
{
((IExplorerObjectDeletable)exObject).ExplorerObjectDeleted += new ExplorerObjectDeletedEvent(CatalogTreeControl_ExplorerObjectDeleted);
}
if (exObject is IExplorerObjectRenamable)
{
((IExplorerObjectRenamable)exObject).ExplorerObjectRenamed += new ExplorerObjectRenamedEvent(CatalogTreeControl_ExplorerObjectRenamed);
}
if (!node.IsExpanded)
{
return(exObject);
}
int imageIndex = gView.Explorer.UI.Framework.UI.ExplorerIcons.ImageIndex(exObject);
node.Nodes.Add(new ExplorerObjectNode(exObject, imageIndex));
return(exObject);
}
internal ExplorerObjectNode FindNode(TreeNode parent, IExplorerObject exObject)
{
if (parent == null)
{
return(null);
}
if (parent is ExplorerObjectNode &&
ExObjectComparer.Equals(((ExplorerObjectNode)parent).ExplorerObject, exObject))
{
return(parent as ExplorerObjectNode);
}
foreach (TreeNode node in parent.Nodes)
{
ExplorerObjectNode n = FindNode(node, exObject);
if (n != null)
{
return(n);
}
}
return(null);
}
internal void RemoveChildNode(IExplorerObject exObject)
{
if (exObject == null)
{
return;
}
TreeNode node = treeView.SelectedNode;
if (node == null)
{
return;
}
bool removed = false;
if (node.IsExpanded)
{
int index = -1;
foreach (TreeNode n in node.Nodes)
{
if (!(n is ExplorerObjectNode))
{
continue;
}
IExplorerObject ex = ((ExplorerObjectNode)n).ExplorerObject;
if (ex == null)
{
continue;
}
if (ExObjectComparer.Equals(ex, exObject))
{
index = node.Nodes.IndexOf(n);
break;
}
}
if (index != -1)
{
node.Nodes.RemoveAt(index);
removed = true;
}
}
if (removed)
{
if (node.Nodes.Count == 0)
{
node.Nodes.Add(new DummyNode());
node.Collapse();
}
}
else
{
ExplorerObjectNode exNode = FindNode(exObject);
if (exNode != null)
{
if (exNode == treeView.SelectedNode)
{
treeView.SelectedNode = treeView.SelectedNode.Parent;
treeView.Nodes.Remove(exNode);
if (treeView.SelectedNode.Nodes.Count == 0)
{
treeView.SelectedNode.Nodes.Add(new DummyNode());
treeView.SelectedNode.Collapse();
}
}
else
{
treeView.Nodes.Remove(exNode);
}
}
}
}
