void OnGUI()
        {
            EditorGUI.BeginChangeCheck();
            _dirListEditor.DoLayoutList();
            if (EditorGUI.EndChangeCheck())
            {
            }

            GUILayout.BeginHorizontal();
            if (GUILayout.Button("Edit"))
            {
                StartEdit();
            }
            EditorGUI.BeginDisabledGroup(!_editing);

            if (GUILayout.Button("Save"))
            {
                QuickCaptureEditorSetting.ClearDirChoices();
                foreach (var dir in _dirChoices)
                {
                    QuickCaptureEditorSetting.AddDirChoice(dir);
                }
                QuickCaptureEditorSetting.Save();
                EndEdit();
            }
            EditorGUI.EndDisabledGroup();
            GUILayout.EndHorizontal();

            if (GUILayout.Button("Capture it!", GUILayout.Height(100)))
            {
                Take();
            }
        }
        void OnEnable()
        {
            _instance      = this;
            _dirChoices    = new List <string>(QuickCaptureEditorSetting.dirChoices);
            _dirListEditor = new ReorderableList(_dirChoices, typeof(string));
            _dirListEditor.onAddCallback = (ReorderableList list) => {
                _dirChoices.Add("");
            };
            _dirListEditor.drawElementCallback = (Rect rect, int index, bool isActive, bool isFocused) => {
                if (isActive && _editing)
                {
                    _dirChoices[index] = EditorGUI.TextField(rect, _dirChoices[index]);
                }
                else
                {
                    EditorGUI.LabelField(rect, _dirChoices[index]);
                }
            };
            _dirListEditor.onSelectCallback = (ReorderableList list) => {
                QuickCaptureEditorSetting.selectedDirIndex = list.index;
                QuickCaptureEditorSetting.Save();
            };
            _dirListEditor.drawHeaderCallback = (Rect rect) => {
                GUI.Label(rect, "OutputDirs");
            };
            _dirListEditor.index = QuickCaptureEditorSetting.selectedDirIndex;

            EndEdit();
        }