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-rw-r--r--doc/classes/GraphEdit.xml23
1 files changed, 23 insertions, 0 deletions
diff --git a/doc/classes/GraphEdit.xml b/doc/classes/GraphEdit.xml
index 965dbe7449..33145dccd0 100644
--- a/doc/classes/GraphEdit.xml
+++ b/doc/classes/GraphEdit.xml
@@ -55,6 +55,29 @@
[/codeblock]
</description>
</method>
+ <method name="_is_node_hover_valid" qualifiers="virtual">
+ <return type="bool" />
+ <argument index="0" name="from" type="StringName" />
+ <argument index="1" name="from_slot" type="int" />
+ <argument index="2" name="to" type="StringName" />
+ <argument index="3" name="to_slot" type="int" />
+ <description>
+ This virtual method can be used to insert additional error detection while the user is dragging a connection over a valid port.
+ Return [code]true[/code] if the connection is indeed valid or return [code]false[/code] if the connection is impossible. If the connection is impossible, no snapping to the port and thus no connection request to that port will happen.
+ In this example a connection to same node is suppressed:
+ [codeblocks]
+ [gdscript]
+ func _is_node_hover_valid(from, from_slot, to, to_slot):
+ return from != to
+ [/gdscript]
+ [csharp]
+ public override bool _IsNodeHoverValid(String from, int fromSlot, String to, int toSlot) {
+ return from != to;
+ }
+ [/csharp]
+ [/codeblocks]
+ </description>
+ </method>
<method name="add_valid_connection_type">
<return type="void" />
<argument index="0" name="from_type" type="int" />