private void RemoteFolder_ChildRemoved(RemoteObject sender, RemoteFolderChildEventArgs args)
{
if (this.InvokeRequired)
{
this.Invoke(new MethodInvoker(delegate { this.RemoteFolder_ChildRemoved(sender, args); }));
return;
}
var removedItem = args.Target;
if (!mObjectsNodes.TryGetValue(removedItem.InternalId, out var nodes))
{
return;
}
//copy it, as the DeleteTreeNodes_r will change it
var nodesArray = nodes.ToArray();
foreach (var node in nodesArray)
{
DeleteTreeNodes_r(node);
}
}
private void AddNewNode(RemoteObject remoteObject, TreeNode parent)
{
TreeNode newNode = parent.Nodes.Add(remoteObject.Name);
newNode.Name = newNode.Text;
newNode.Tag = remoteObject;
var iconKey = remoteObject.TryGetIconName();
if (iconKey != null)
{
newNode.ImageKey = iconKey;
newNode.SelectedImageKey = iconKey;
}
if (remoteObject is RemoteFolder)
{
var subNode = newNode.Nodes.Add("dummy");
subNode.Tag = this;
}
else if (iconKey == null)
{
newNode.ImageKey = DefaultIcons.FILE_GEAR_ICON;
newNode.SelectedImageKey = DefaultIcons.FILE_GEAR_ICON;
}
RegisterNode(remoteObject, newNode);
}
private void RemoteObject_StateChanged(RemoteObject sender, EventArgs args)
{
if (sender.TryGetIconName() == null)
{
return;
}
UpdateNodesIcon(sender);
}
internal void OnChildDestroyed(RemoteObject child)
{
//if children not cached, nothing to do...
if (mChildren == null)
{
return;
}
mChildren.Remove(child.Name);
if (ChildRemoved != null)
{
var args = new RemoteFolderChildEventArgs(child);
ChildRemoved(this, args);
}
}
private void RemoteFolder_ChildAdded(RemoteObject sender, RemoteFolderChildEventArgs args)
{
if (this.InvokeRequired)
{
this.Invoke(new MethodInvoker(delegate { this.RemoteFolder_ChildAdded(sender, args); }));
}
else
{
var addedItem = args.Target;
if (!mObjectsNodes.TryGetValue(addedItem.ParentInternalId, out var nodes))
{
return;
}
foreach (var node in nodes)
{
AddNewNode(addedItem, node);
}
}
}
private void UpdateNodesIcon(RemoteObject remoteObject)
{
if (this.InvokeRequired)
{
this.Invoke(new MethodInvoker(delegate { this.UpdateNodesIcon(remoteObject); }));
}
else
{
if (!mObjectsNodes.TryGetValue(remoteObject.InternalId, out var nodes))
{
return;
}
var customIcon = remoteObject.TryGetIconName();
foreach (var node in nodes)
{
node.ImageKey = customIcon;
node.SelectedImageKey = customIcon;
}
}
}
private void RegisterNode(RemoteObject obj, TreeNode node)
{
if (this.InvokeRequired)
{
throw new InvalidOperationException("InvokeRequired");
}
if (!mObjectsNodes.TryGetValue(obj.InternalId, out var nodes))
{
nodes = new List <TreeNode>();
mObjectsNodes.Add(obj.InternalId, nodes);
obj.StateChanged += RemoteObject_StateChanged;
if (obj is RemoteFolder folder)
{
folder.ChildAdded += RemoteFolder_ChildAdded;
folder.ChildRemoved += RemoteFolder_ChildRemoved;
}
}
nodes.Add(node);
}
public RemoteFolderChildEventArgs(RemoteObject target)
{
Target = target ?? throw new ArgumentNullException(nameof(target));
}