public void RemoveNode(Node node)
{
if (node == null)
{
return;
}
if (NodeRemoving != null)
{
var eventArgs = new AcceptNodeEventArgs(node);
NodeRemoving(this, eventArgs);
if (eventArgs.Cancel)
{
return;
}
}
// if (HasFocus(node))
// FocusElement = null;
DisconnectAll(node);
_graphNodes.Remove(node);
UpdateRevisionIndex();
if (InvalidateViews != null)
{
InvalidateViews(this, EventArgs.Empty);
}
if (NodeRemoved != null)
{
NodeRemoved(this, new NodeEventArgs(node));
}
}
public bool AddNode(Node node)
{
if (node == null ||
_graphNodes.Contains(node))
{
return(false);
}
_graphNodes.Insert(0, node);
if (NodeAdded != null)
{
var eventArgs = new AcceptNodeEventArgs(node);
NodeAdded(this, eventArgs);
if (eventArgs.Cancel)
{
_graphNodes.Remove(node);
return(false);
}
}
BringElementToFront(node);
// FocusElement = node;
UpdateRevisionIndex();
if (InvalidateViews != null)
{
InvalidateViews(this, EventArgs.Empty);
}
return(true);
}
public bool AddNodes(IEnumerable <Node> nodes)
{
if (nodes == null)
{
return(false);
}
int index = 0;
bool modified = false;
Node lastNode = null;
foreach (var node in nodes)
{
if (node == null)
{
continue;
}
if (_graphNodes.Contains(node))
{
continue;
}
_graphNodes.Insert(index, node); index++;
if (NodeAdded != null)
{
var eventArgs = new AcceptNodeEventArgs(node);
NodeAdded(this, eventArgs);
if (eventArgs.Cancel)
{
_graphNodes.Remove(node);
modified = true;
}
else
{
lastNode = node;
}
}
else
{
lastNode = node;
}
}
if (lastNode != null)
{
BringElementToFront(lastNode);
// FocusElement = lastNode;
UpdateRevisionIndex();
if (InvalidateViews != null)
{
InvalidateViews(this, EventArgs.Empty);
}
}
return(modified);
}
public bool RemoveNodes(IEnumerable <Node> nodes)
{
if (nodes == null)
{
return(false);
}
bool modified = false;
foreach (var node in nodes)
{
if (node == null)
{
continue;
}
if (NodeRemoving != null)
{
var eventArgs = new AcceptNodeEventArgs(node);
NodeRemoving(this, eventArgs);
if (eventArgs.Cancel)
{
continue;
}
}
// if (HasFocus(node))
// FocusElement = null;
DisconnectAll(node);
_graphNodes.Remove(node);
modified = true;
if (NodeRemoved != null)
{
NodeRemoved(this, new NodeEventArgs(node));
}
}
if (modified)
{
UpdateRevisionIndex();
if (InvalidateViews != null)
{
InvalidateViews(this, EventArgs.Empty);
}
}
return(modified);
}
private void OnNodeAdded(object sender, AcceptNodeEventArgs args)
{
OnNodesChange();
}
public void RemoveNode(Node node)
{
if (node == null)
return;
if (NodeRemoving != null)
{
var eventArgs = new AcceptNodeEventArgs(node);
NodeRemoving(this, eventArgs);
if (eventArgs.Cancel)
return;
}
if (HasFocus(node))
FocusElement = null;
DisconnectAll(node);
graphNodes.Remove(node);
this.Invalidate();
if (NodeRemoved != null)
NodeRemoved(this, new NodeEventArgs(node));
}
public bool RemoveNodes(IEnumerable<Node> nodes)
{
if (nodes == null)
return false;
bool modified = false;
foreach (var node in nodes)
{
if (node == null)
continue;
if (NodeRemoving != null)
{
var eventArgs = new AcceptNodeEventArgs(node);
NodeRemoving(this, eventArgs);
if (eventArgs.Cancel)
continue;
}
if (HasFocus(node))
FocusElement = null;
DisconnectAll(node);
graphNodes.Remove(node);
modified = true;
if (NodeRemoved != null)
NodeRemoved(this, new NodeEventArgs(node));
}
if (modified)
this.Invalidate();
return modified;
}
public bool AddNodes(IEnumerable<Node> nodes)
{
if (nodes == null)
return false;
int index = 0;
bool modified = false;
Node lastNode = null;
foreach (var node in nodes)
{
if (node == null)
continue;
if (graphNodes.Contains(node))
continue;
graphNodes.Insert(index, node); index++;
if (NodeAdded != null)
{
var eventArgs = new AcceptNodeEventArgs(node);
NodeAdded(this, eventArgs);
if (eventArgs.Cancel)
{
graphNodes.Remove(node);
modified = true;
} else
lastNode = node;
} else
lastNode = node;
}
if (lastNode != null)
{
BringElementToFront(lastNode);
FocusElement = lastNode;
this.Invalidate();
}
return modified;
}
public bool AddNode(Node node)
{
if (node == null ||
graphNodes.Contains(node))
return false;
graphNodes.Insert(0, node);
if (NodeAdded != null)
{
var eventArgs = new AcceptNodeEventArgs(node);
NodeAdded(this, eventArgs);
if (eventArgs.Cancel)
{
graphNodes.Remove(node);
return false;
}
}
BringElementToFront(node);
FocusElement = node;
this.Invalidate();
return true;
}
public bool AddNode(Node node)
{
if (node == null ||
_graphNodes.Contains(node))
return false;
_graphNodes.Insert(0, node);
if (NodeAdded != null)
{
var eventArgs = new AcceptNodeEventArgs(node);
NodeAdded(this, eventArgs);
if (eventArgs.Cancel)
{
_graphNodes.Remove(node);
return false;
}
}
BringElementToFront(node);
// FocusElement = node;
UpdateRevisionIndex();
if (InvalidateViews != null)
InvalidateViews(this, EventArgs.Empty);
return true;
}
public bool RemoveNodes(IEnumerable<Node> nodes)
{
if (nodes == null)
return false;
bool modified = false;
foreach (var node in nodes)
{
if (node == null)
continue;
if (NodeRemoving != null)
{
var eventArgs = new AcceptNodeEventArgs(node);
NodeRemoving(this, eventArgs);
if (eventArgs.Cancel)
continue;
}
// if (HasFocus(node))
// FocusElement = null;
DisconnectAll(node);
_graphNodes.Remove(node);
modified = true;
if (NodeRemoved != null)
NodeRemoved(this, new NodeEventArgs(node));
}
if (modified) {
UpdateRevisionIndex();
if (InvalidateViews != null)
InvalidateViews(this, EventArgs.Empty);
}
return modified;
}
public void RemoveNode(Node node)
{
if (node == null)
return;
if (NodeRemoving != null)
{
var eventArgs = new AcceptNodeEventArgs(node);
NodeRemoving(this, eventArgs);
if (eventArgs.Cancel)
return;
}
// if (HasFocus(node))
// FocusElement = null;
DisconnectAll(node);
_graphNodes.Remove(node);
UpdateRevisionIndex();
if (InvalidateViews != null)
InvalidateViews(this, EventArgs.Empty);
if (NodeRemoved != null)
NodeRemoved(this, new NodeEventArgs(node));
}