private static ReorderableList CreateReorderableList(string fieldName, List <XNode.NodePort> instancePorts, SerializedProperty arrayData, Type type, SerializedObject serializedObject, XNode.NodePort.IO io, XNode.Node.ConnectionType connectionType, XNode.Node.TypeConstraint typeConstraint, Action <ReorderableList> onCreation)
{
bool hasArrayData = arrayData != null && arrayData.isArray;
XNode.Node node = serializedObject.targetObject as XNode.Node;
ReorderableList list = new ReorderableList(instancePorts, null, true, true, true, true);
string label = arrayData != null ? arrayData.displayName : ObjectNames.NicifyVariableName(fieldName);
list.drawElementCallback =
(Rect rect, int index, bool isActive, bool isFocused) => {
XNode.NodePort port = node.GetPort(fieldName + " " + index);
if (hasArrayData)
{
if (arrayData.arraySize <= index)
{
EditorGUI.LabelField(rect, "Invalid element " + index);
return;
}
SerializedProperty itemData = arrayData.GetArrayElementAtIndex(index);
EditorGUI.PropertyField(rect, itemData, true);
}
else
{
EditorGUI.LabelField(rect, port.fieldName);
}
if (port != null)
{
Vector2 pos = rect.position + (port.IsOutput?new Vector2(rect.width + 6, 0) : new Vector2(-36, 0));
NodeEditorGUILayout.PortField(pos, port);
}
};
list.elementHeightCallback =
(int index) => {
if (hasArrayData)
{
if (arrayData.arraySize <= index)
{
return(EditorGUIUtility.singleLineHeight);
}
SerializedProperty itemData = arrayData.GetArrayElementAtIndex(index);
return(EditorGUI.GetPropertyHeight(itemData));
}
else
{
return(EditorGUIUtility.singleLineHeight);
}
};
list.drawHeaderCallback =
(Rect rect) => {
EditorGUI.LabelField(rect, label);
};
list.onSelectCallback =
(ReorderableList rl) => {
reorderableListIndex = rl.index;
};
list.onReorderCallback =
(ReorderableList rl) => {
// Move up
if (rl.index > reorderableListIndex)
{
for (int i = reorderableListIndex; i < rl.index; ++i)
{
XNode.NodePort port = node.GetPort(fieldName + " " + i);
XNode.NodePort nextPort = node.GetPort(fieldName + " " + (i + 1));
port.SwapConnections(nextPort);
// Swap cached positions to mitigate twitching
Rect rect = NodeEditorWindow.current.portConnectionPoints[port];
NodeEditorWindow.current.portConnectionPoints[port] = NodeEditorWindow.current.portConnectionPoints[nextPort];
NodeEditorWindow.current.portConnectionPoints[nextPort] = rect;
}
}
// Move down
else
{
for (int i = reorderableListIndex; i > rl.index; --i)
{
XNode.NodePort port = node.GetPort(fieldName + " " + i);
XNode.NodePort nextPort = node.GetPort(fieldName + " " + (i - 1));
port.SwapConnections(nextPort);
// Swap cached positions to mitigate twitching
Rect rect = NodeEditorWindow.current.portConnectionPoints[port];
NodeEditorWindow.current.portConnectionPoints[port] = NodeEditorWindow.current.portConnectionPoints[nextPort];
NodeEditorWindow.current.portConnectionPoints[nextPort] = rect;
}
}
// Apply changes
serializedObject.ApplyModifiedProperties();
serializedObject.Update();
// Move array data if there is any
if (hasArrayData)
{
arrayData.MoveArrayElement(reorderableListIndex, rl.index);
}
// Apply changes
serializedObject.ApplyModifiedProperties();
serializedObject.Update();
NodeEditorWindow.current.Repaint();
EditorApplication.delayCall += NodeEditorWindow.current.Repaint;
};
list.onAddCallback =
(ReorderableList rl) => {
// Add instance port postfixed with an index number
string newName = fieldName + " 0";
int i = 0;
while (node.HasPort(newName))
{
newName = fieldName + " " + (++i);
}
if (io == XNode.NodePort.IO.Output)
{
node.AddInstanceOutput(type, connectionType, XNode.Node.TypeConstraint.None, newName);
}
else
{
node.AddInstanceInput(type, connectionType, typeConstraint, newName);
}
serializedObject.Update();
EditorUtility.SetDirty(node);
if (hasArrayData)
{
arrayData.InsertArrayElementAtIndex(arrayData.arraySize);
}
serializedObject.ApplyModifiedProperties();
};
list.onRemoveCallback =
(ReorderableList rl) => {
Predicate <string> isMatchingInstancePort =
x => {
string[] split = x.Split(' ');
if (split != null && split.Length == 2)
{
return(split[0] == fieldName);
}
else
{
return(false);
}
};
instancePorts = node.InstancePorts.Where(x => isMatchingInstancePort(x.fieldName)).OrderBy(x => x.fieldName).ToList();
int index = rl.index;
// Clear the removed ports connections
instancePorts[index].ClearConnections();
// Move following connections one step up to replace the missing connection
for (int k = index + 1; k < instancePorts.Count(); k++)
{
for (int j = 0; j < instancePorts[k].ConnectionCount; j++)
{
XNode.NodePort other = instancePorts[k].GetConnection(j);
instancePorts[k].Disconnect(other);
instancePorts[k - 1].Connect(other);
}
}
// Remove the last instance port, to avoid messing up the indexing
node.RemoveInstancePort(instancePorts[instancePorts.Count() - 1].fieldName);
serializedObject.Update();
EditorUtility.SetDirty(node);
if (hasArrayData)
{
arrayData.DeleteArrayElementAtIndex(index);
// Error handling. If the following happens too often, file a bug report at https://github.com/Siccity/xNode/issues
if (instancePorts.Count <= arrayData.arraySize)
{
while (instancePorts.Count <= arrayData.arraySize)
{
arrayData.DeleteArrayElementAtIndex(arrayData.arraySize - 1);
}
UnityEngine.Debug.LogWarning("Array size exceeded instance ports size. Excess items removed.");
}
serializedObject.ApplyModifiedProperties();
serializedObject.Update();
}
};
if (hasArrayData)
{
int instancePortCount = instancePorts.Count;
while (instancePortCount < arrayData.arraySize)
{
// Add instance port postfixed with an index number
string newName = arrayData.name + " 0";
int i = 0;
while (node.HasPort(newName))
{
newName = arrayData.name + " " + (++i);
}
if (io == XNode.NodePort.IO.Output)
{
node.AddInstanceOutput(type, connectionType, typeConstraint, newName);
}
else
{
node.AddInstanceInput(type, connectionType, typeConstraint, newName);
}
EditorUtility.SetDirty(node);
instancePortCount++;
}
while (arrayData.arraySize < instancePortCount)
{
arrayData.InsertArrayElementAtIndex(arrayData.arraySize);
}
serializedObject.ApplyModifiedProperties();
serializedObject.Update();
}
if (onCreation != null)
{
onCreation(list);
}
return(list);
}