void DoCustomEffectSorter()

in unity/Assets/PostProcessingV2/Editor/PostProcessLayerEditor.cs [245:334]
68 lines of code
11 McCabe index (conditional complexity)

        void DoCustomEffectSorter()
        {
            EditorUtilities.DrawSplitter();
            m_ShowCustomSorter.boolValue = EditorUtilities.DrawHeader("Custom Effect Sorting", m_ShowCustomSorter.boolValue);

            if (m_ShowCustomSorter.boolValue)
            {
                bool isInPrefab = false;

                // Init lists if needed
                if (m_CustomLists == null)
                {
                    // In some cases the editor will refresh before components which means
                    // components might not have been fully initialized yet. In this case we also
                    // need to make sure that we're not in a prefab as sorteBundles isn't a
                    // serializable object and won't exist until put on a scene.
                    if (m_Target.sortedBundles == null)
                    {
                        isInPrefab = string.IsNullOrEmpty(m_Target.gameObject.scene.name);

                        if (!isInPrefab)
                        {
                            // sortedBundles will be initialized and ready to use on the next frame
                            Repaint();
                        }
                    }
                    else
                    {
                        // Create a reorderable list for each injection event
                        m_CustomLists = new Dictionary<PostProcessEvent, ReorderableList>();
                        foreach (var evt in Enum.GetValues(typeof(PostProcessEvent)).Cast<PostProcessEvent>())
                        {
                            var bundles = m_Target.sortedBundles[evt];
                            var listName = ObjectNames.NicifyVariableName(evt.ToString());

                            var list = new ReorderableList(bundles, typeof(SerializedBundleRef), true, true, false, false);

                            list.drawHeaderCallback = (rect) =>
                            {
                                EditorGUI.LabelField(rect, listName);
                            };

                            list.drawElementCallback = (rect, index, isActive, isFocused) =>
                            {
                                var sbr = (SerializedBundleRef)list.list[index];
                                EditorGUI.LabelField(rect, sbr.bundle.attribute.menuItem);
                            };

                            list.onReorderCallback = (l) =>
                            {
                                EditorUtility.SetDirty(m_Target);
                            };

                            m_CustomLists.Add(evt, list);
                        }
                    }
                }

                GUILayout.Space(5);

                if (isInPrefab)
                {
                    EditorGUILayout.HelpBox("Not supported in prefabs.", MessageType.Info);
                    GUILayout.Space(3);
                    return;
                }

                bool anyList = false;
                if (m_CustomLists != null)
                {
                    foreach (var kvp in m_CustomLists)
                    {
                        var list = kvp.Value;

                        // Skip empty lists to avoid polluting the inspector
                        if (list.count == 0)
                            continue;

                        list.DoLayoutList();
                        anyList = true;
                    }
                }

                if (!anyList)
                {
                    EditorGUILayout.HelpBox("No custom effect loaded.", MessageType.Info);
                    GUILayout.Space(3);
                }
            }
        }