// Constructor
public NodeLink(
Node fromNode, Outlet fromOutlet,
Node toNode, Inlet toInlet
)
{
_fromNode = fromNode;
_fromOutlet = fromOutlet;
_toNode = toNode;
_toInlet = toInlet;
}
public WiringState(Node node, Inlet inlet)
{
this.node = node;
this.inlet = inlet;
}
// Show the inlet/outlet context menu .
void ShowNodeButtonMenu(Node node, Inlet inlet, Outlet outlet)
{
var menu = new GenericMenu();
if (inlet != null)
{
// "New Connection"
menu.AddItem(
new GUIContent("New Connection"), false,
BeginWiring, new WiringState(node, inlet)
);
// Disconnection items
foreach (var targetNode in _patch.nodeList)
{
var link = targetNode.TryGetLinkTo(node, inlet, _patch);
if (link == null) continue;
var label = "Disconnect/" + targetNode.displayName;
menu.AddItem(new GUIContent(label), false, RemoveLink, link);
}
}
else
{
// "New Connection"
menu.AddItem(
new GUIContent("New Connection"), false,
BeginWiring, new WiringState(node, outlet)
);
// Disconnection items
foreach (var link in node.EnumerateLinksFrom(outlet, _patch))
{
var label = "Disconnect/" + link.toNode.displayName;
menu.AddItem(new GUIContent(label), false, RemoveLink, link);
}
}
menu.ShowAsContext();
}
public InletButtonRecord(Node node, Inlet inlet)
{
this.node = node;
this.inlet = inlet;
}
public WiringState(Node node, Inlet inlet)
{
this.node = node;
this.inlet = inlet;
}
// Remove a link to a given node/inlet.
public void RemoveLink(Outlet outlet, Node targetNode, Inlet inlet)
{
Undo.RecordObject(_instance, "Remove Link");
// Retrieve the target method (inlet) information.
var targetMethod = targetNode._instance.GetType().GetMethod(inlet.methodName);
// Remove the link.
LinkUtility.RemoveLinkNodes(
_instance, outlet.boundEvent,
targetNode._instance, targetMethod
);
// Clear the cache and update information.
_cachedLinks = null;
_serializedObject.Update();
}
// Try to make a link from the outlet to a given node/inlet.
public void TryLinkTo(Outlet outlet, Node targetNode, Inlet inlet)
{
Undo.RecordObject(_instance, "Link To Node");
// Retrieve the target method (inlet) information.
var targetMethod = targetNode._instance.GetType().GetMethod(inlet.methodName);
// Try to create a link.
var result = LinkUtility.TryLinkNodes(
_instance, outlet.boundEvent,
targetNode._instance, targetMethod
);
// Clear the cache and update information.
if (result) {
_cachedLinks = null;
_serializedObject.Update();
}
}
// If this node has a link to a given inlet, return it.
public NodeLink TryGetLinkTo(Node targetNode, Inlet inlet, Patch patch)
{
if (_cachedLinks == null) CacheLinks(patch);
foreach (var link in _cachedLinks)
if (link.toInlet == inlet) return link;
return null;
}