public static void CreateTransition(FlowWindow flowWindow, FlowWindow toWindow, string localPath, System.Action<TransitionInputTemplateParameters> callback = null) { if (flowWindow.GetScreen() == null) return; var screenPath = AssetDatabase.GetAssetPath(flowWindow.GetScreen()); screenPath = System.IO.Path.GetDirectoryName(screenPath); var splitted = screenPath.Split(new string[] {"/"}, System.StringSplitOptions.RemoveEmptyEntries); var packagePath = string.Join("/", splitted, 0, splitted.Length - 1); var path = packagePath + localPath; FlowChooserFilterWindow.Show<TransitionInputTemplateParameters>( root: null, onSelect: (element) => { // Clean up previous transitions if exists var attachItem = flowWindow.GetAttachItem(toWindow); if (attachItem != null) { if (attachItem.transition != null && attachItem.transitionParameters != null) { AssetDatabase.DeleteAsset(AssetDatabase.GetAssetPath(attachItem.transitionParameters.gameObject)); attachItem.transition = null; attachItem.transitionParameters = null; } } if (System.IO.Directory.Exists(path) == false) { System.IO.Directory.CreateDirectory(path); } if (element == null) return; var elementPath = AssetDatabase.GetAssetPath(element.gameObject); var targetName = "Transition-" + element.gameObject.name + "-" + (toWindow.IsFunction() == true ? FlowSystem.GetWindow(toWindow.functionId).directory : toWindow.directory); var targetPath = path + "/" + targetName + ".prefab"; if (AssetDatabase.CopyAsset(elementPath, targetPath) == true) { AssetDatabase.ImportAsset(targetPath); var newInstance = AssetDatabase.LoadAssetAtPath<GameObject>(targetPath); var instance = newInstance.GetComponent<TransitionInputTemplateParameters>(); instance.useAsTemplate = false; EditorUtility.SetDirty(instance); attachItem.transition = instance.transition; attachItem.transitionParameters = instance; if (callback != null) callback(instance); } }, onEveryGUI: (element) => { // on gui var style = new GUIStyle(GUI.skin.label); style.wordWrap = true; if (element != null) { GUILayout.Label(element.name, style); } else { GUILayout.Label("None", style); } }, predicate: (element) => { var elementPath = AssetDatabase.GetAssetPath(element.gameObject); var isInPackage = FlowProjectWindowObject.IsValidPackage(elementPath + "/../"); if (element.transition != null && (isInPackage == true || element.useAsTemplate == true)) { var name = element.GetType().FullName; var baseName = name.Substring(0, name.IndexOf("Parameters")); var type = System.Type.GetType(baseName + ", " + element.GetType().Assembly.FullName, throwOnError: true, ignoreCase: true); if (type != null) { var attribute = type.GetCustomAttributes(inherit: true).OfType<TransitionCameraAttribute>().FirstOrDefault(); if (attribute != null) { return true; } else { Debug.Log("No Attribute: " + baseName, element); } } else { Debug.Log("No type: " + baseName); } } return false; }, strongType: false, directory: null, useCache: false, drawNoneOption: true, updateRedraw: true); }