public void OnEnable()
{
m_FoundIcon = Resources.Load <Texture2D>(string.Format("{0}/{1}", EditorStyles.ThemeFolder, EditorStyles.ICON_NOTIFICATION));
m_SearchWidget = new SearchWidget <HierarchySearchType>(OnSearch, OnClear, Save);
m_SearchWidget.SetState(
EditorPrefsUtils.LoadEnum <HierarchySearchType>(EditorPrefKeys.KEY_SEARCH_TYPE, HierarchySearchType.Component),
EditorPrefsUtils.LoadString(EditorPrefKeys.KEY_SEARCH_TERM, string.Empty),
EditorPrefsUtils.LoadBool(EditorPrefKeys.KEY_CASE_SENSITIVE, false),
EditorPrefsUtils.LoadBool(EditorPrefKeys.KEY_MATCH_WHOLE_WORD, false),
EditorPrefsUtils.LoadBool(EditorPrefKeys.KEY_INCLUDE_INACTIVE, true));
EditorApplication.hierarchyWindowItemOnGUI += HierarchyHighlightItem;
}