Gui: Fix NullPointerException when pressing backspace on empty search box [#841]

400_xowa/src/gplx/xowa/htmls/js/Xoh_js_cbk.java

@@ -1,6 +1,6 @@
 /*
 XOWA: the XOWA Offline Wiki Application
-Copyright (C) 2012-2017 gnosygnu@gmail.com
+Copyright (C) 2012-2021 gnosygnu@gmail.com
 
 XOWA is licensed under the terms of the General Public License (GPL) Version 3,
 or alternatively under the terms of the Apache License Version 2.0.
@@ -13,188 +13,214 @@ The terms of each license can be found in the source code repository:
 GPLv3 License: https://github.com/gnosygnu/xowa/blob/master/LICENSE-GPLv3.txt
 Apache License: https://github.com/gnosygnu/xowa/blob/master/LICENSE-APACHE2.txt
 */
-package gplx.xowa.htmls.js; import gplx.*; import gplx.xowa.*; import gplx.xowa.htmls.*;
-import gplx.core.threads.*; import gplx.xowa.xtns.pfuncs.ifs.*; import gplx.xowa.wikis.data.tbls.*;
-import gplx.langs.jsons.*;
-import gplx.xowa.htmls.js.*;
-import gplx.xowa.guis.views.*;
-import gplx.xowa.parsers.*;
-import gplx.xowa.htmls.modules.popups.*;
-public class Xoh_js_cbk implements Gfo_invk {
-	private Xoae_app app;
-	private Xog_html_itm html_itm;
-	private Xop_root_tkn root = new Xop_root_tkn();
-	private final    Bry_bfr bfr = Bry_bfr_.Reset(255);
-	public Xoh_js_cbk(Xog_html_itm html_itm) {this.html_itm = html_itm; this.app = html_itm.Owner_tab().Tab_mgr().Win().App();}
-	private String Xowa_exec_test(GfoMsg m) {	// concat args with pipe; EX: xowa_exec('proc', 'arg0', 'arg1'); -> proc|arg0|arg1
-		bfr.Clear();
-		bfr.Add_str_u8(m.Key());
-		int len = m.Args_count();
-		for (int i = 0; i < len; i++)
-			bfr.Add_str_a7("|").Add_str_u8(m.Args_getAt(i).Val_to_str_or_empty());
-		return bfr.To_str_and_clear();
-	}
-	private String[] Xowa_exec_test_as_array(GfoMsg m) {// return args as array; EX: xowa_exec('proc', 'arg0', 'arg1'); -> proc,arg0,arg1
-		bfr.Clear();
-		int len = m.Args_count();
-		String[] rv = new String[len + 1];
-		rv[0] = Invk_xowa_exec_test_as_array;
-		for (int i = 0; i < len; i++)
-			rv[i + 1] = Object_.Xto_str_strict_or_empty(m.ReadValAt(i));
-		return rv;
-	}
-	private String Parse_to_html(GfoMsg m) {
-		Xowe_wiki wiki = html_itm.Owner_tab().Wiki();
-		Xop_ctx ctx = wiki.Parser_mgr().Ctx();
-		boolean old_para_enabled = ctx.Para().Enabled();
-		byte[] raw = Bry_.new_u8(m.Args_getAt(0).Val_to_str_or_empty());
-		boolean para_enabled = m.Args_count() < 2 ? false : Bool_.Parse(m.Args_getAt(1).Val_to_str_or_empty());
-		try {
-			ctx.Para().Enabled_(para_enabled);
-			wiki.Parser_mgr().Main().Parse_text_to_wdom(root, ctx, ctx.Tkn_mkr(), raw, 0);
-			byte[] data = root.Data_mid();
-			wiki.Html_mgr().Html_wtr().Write_doc(bfr, ctx, data, root);
-			return bfr.To_str_and_clear();
-		}
-		finally {
-			ctx.Para().Enabled_(old_para_enabled);
-		}
-	}
-	private String Get_page(GfoMsg m) {
-		Xowe_wiki wiki = html_itm.Owner_tab().Wiki();
-		try {
-			Xoa_ttl ttl = Xoa_ttl.Parse(wiki, m.Args_getAt(0).Val_to_bry());
-			Xoae_page page = wiki.Data_mgr().Load_page_by_ttl(ttl);
-			return String_.new_u8(page.Db().Text().Text_bry());
-		} catch (Exception e) {Err_.Noop(e); return null;}
-	}
-	private String Popups_get_html(GfoMsg m) {
-		try {
-			String mode			= m.Args_getAt(0).Val_to_str_or_empty();
-			String popups_id	= m.Args_getAt(1).Val_to_str_or_empty();
-
-			Xow_popup_mgr popup_mgr = html_itm.Owner_tab().Wiki().Html_mgr().Head_mgr().Popup_mgr();
-			if      (String_.Eq(mode, "init")) {
-				byte[] href_bry		= m.Args_getAt(2).Val_to_bry();
-				byte[] tooltip_bry	= m.Args_getAt(3).Val_to_bry();
-				return popup_mgr.Show_init(popups_id, href_bry, tooltip_bry);
-			}
-			else if (String_.Eq(mode, "more")) 
-				return popup_mgr.Show_more(popups_id);
-			else if (String_.Eq(mode, "all")) 
-				popup_mgr.Show_all(popups_id);
-			return "";
-		} catch (Exception e) {Err_.Noop(e); return null;}
-	}
-	private String[] Get_title_meta(Xowe_wiki wiki, byte[] ttl_bry) {
-		synchronized (tmp_page) {
-			tmp_page.Clear();
-			Xoa_ttl ttl = Xoa_ttl.Parse(wiki, ttl_bry);
-			wiki.Db_mgr().Load_mgr().Load_by_ttl(tmp_page, ttl.Ns(), ttl.Page_db());
-		}
-		return String_.Ary(tmp_page.Exists() ? "1" : "0", Int_.To_str(tmp_page.Id()), Int_.To_str(tmp_page.Ns_id()), String_.new_u8(tmp_page.Ttl_page_db()), Bool_.To_str_lower(tmp_page.Redirected()), tmp_page.Modified_on().XtoStr_fmt("yyyy-MM-dd HH:mm:ss"), Int_.To_str(tmp_page.Text_len()));
-	}	private static final    Xowd_page_itm tmp_page = Xowd_page_itm.new_tmp();
-	private String[][] Get_titles_meta(GfoMsg m) {
-		Xowe_wiki wiki = html_itm.Owner_tab().Wiki();
-		try {
-			byte[][] ttls = Bry_split_.Split(Bry_.new_u8((String)m.ReadValAt(0)), Byte_ascii.Nl);
-			int ttls_len = ttls.length;
-			String[][] rv = new String[ttls_len][];
-			for (int i = 0; i < ttls_len; i++) {
-				byte[] ttl = ttls[i];
-				rv[i] = Get_title_meta(wiki, ttl);
-			}
-			return rv;
-		} catch (Exception e) {Err_.Noop(e); return null;}
-	}
-	private boolean Get_title_exists(Xowe_wiki wiki, byte[] ttl) {
-		return Pfunc_ifexist.Exists(wiki, ttl);
-	}		
-	private String[] Get_titles_exists(GfoMsg m) {
-		Xowe_wiki wiki = html_itm.Owner_tab().Wiki();
-		try {
-			byte[][] ttls = Bry_.Ary_obj((Object[])m.ReadValAt(0));
-			int ttls_len = ttls.length;
-			String[] rv = new String[ttls_len];
-			for (int i = 0; i < ttls_len; i++) {
-				byte[] ttl = ttls[i];
-				rv[i] = Get_title_exists(wiki, ttl) ? "1" : "0";
-			}
-			return rv;
-		} catch (Exception e) {Err_.Noop(e); return null;}
-	}		
-	private String Get_search_suggestions(GfoMsg m) {
-		Xowe_wiki wiki = html_itm.Owner_tab().Wiki();
-		byte[] search_str = Bry_.new_u8((String)m.ReadValAt(0));
-		byte[] cbk_func = Bry_.new_u8((String)m.ReadValAt(1));
-		app.Addon_mgr().Itms__search__htmlbar().Search_by_swt(wiki, search_str, cbk_func);
-		return "";
-	}
-	private String[] Wikidata_get_label(GfoMsg m) {
-		try {
-			Thread_adp_.Sleep(10);	// slow down calls to prevent random crashing in XulRunner; DATE:2014-04-23
-			gplx.xowa.xtns.wbases.Wdata_wiki_mgr wdata_mgr = app.Wiki_mgr().Wdata_mgr();
-			wdata_mgr.Wdata_wiki().Init_assert();	// NOTE: must assert else ns_mgr won't load Property
-			int len = m.Args_count();
-			if (len < 1) return null;
-			byte[][] langs = Bry_split_.Split(m.Args_getAt(0).Val_to_bry(), Byte_ascii.Semic);
-			int langs_len = langs.length;
-			String[] rv = new String[len - 1];
-			for (int i = 1; i < len; i++) {
-				try {
-					byte[] ttl_bry = m.Args_getAt(i).Val_to_bry();
-					gplx.xowa.xtns.wbases.Wdata_doc page = wdata_mgr.Doc_mgr.Get_by_xid_or_null(ttl_bry); if (page == null) continue;
-					for (int j = 0; j < langs_len; j++) {
-						byte[] lang_key = langs[j];
-						if		(Bry_.Eq(lang_key, Wikidata_get_label_xowa_ui_lang))
-							lang_key = app.Sys_cfg().Lang();
-						byte[] val_bry = null;
-						if		(Bry_.Eq(lang_key, Wikidata_get_label_xowa_title))
-							val_bry = ttl_bry;
-						else {
-							val_bry = page.Get_label_bry_or_null(lang_key);
-						}
-						if (val_bry == null) continue;
-						rv[i - 1] = String_.new_u8(val_bry);
-						break;
-					}
-				}	catch (Exception e) {Err_.Noop(e); rv[i] = null;}
-				finally {}
-			}
-			return rv;
-		} catch (Exception e) {Err_.Noop(e); return null;}
-	}
-	private String Scripts_exec(GfoMsg m) {
-		Object rv = null;
-		try {
-			rv = app.Gfs_mgr().Run_str(m.Args_getAt(0).Val_to_str_or_empty());
-		}
-		catch (Exception e) {Err_.Noop(e); return null;}
-		return Object_.Xto_str_strict_or_empty(rv);
-	}
-	private static final    byte[] Wikidata_get_label_xowa_ui_lang = Bry_.new_a7("xowa_ui_lang"), Wikidata_get_label_xowa_title = Bry_.new_a7("xowa_title");
-	public Object Invk(GfsCtx ctx, int ikey, String k, GfoMsg m) {
-		if		(ctx.Match(k, Invk_parse_to_html))						return Parse_to_html(m);
-		else if	(ctx.Match(k, Invk_wikidata_get_label))					return Wikidata_get_label(m);
-		else if	(ctx.Match(k, Invk_get_page))							return Get_page(m);
-		else if	(ctx.MatchIn(k, Invk_cmd, Invk_scripts_exec))			return Scripts_exec(m);
-		else if	(ctx.Match(k, Invk_scripts_exec))						return Scripts_exec(m);
-		else if	(ctx.Match(k, Invk_popups_get_html))					return Popups_get_html(m);
-		else if	(ctx.Match(k, Invk_get_search_suggestions))				return Get_search_suggestions(m);
-		else if	(ctx.Match(k, Invk_get_titles_meta))					return Get_titles_meta(m);
-		else if	(ctx.Match(k, Invk_get_titles_exists))					return Get_titles_exists(m);
-		else if	(ctx.Match(k, Invk_get_current_url))					return String_.new_u8(html_itm.Owner_tab().Page().Url().Raw());
-		else if	(ctx.Match(k, Invk_xowa_exec_test))						return Xowa_exec_test(m);
-		else if	(ctx.Match(k, Invk_xowa_exec_test_as_array))			return Xowa_exec_test_as_array(m);
-		else if	(ctx.Match(k, Invk_exec_json))							return app.Html__bridge_mgr().Cmd_mgr().Exec(m);
-		else if	(ctx.Match(k, Invk_bldr_exec))							return app.Bldr().Exec_json((String)m.ReadValAt(0));
-		else	return Gfo_invk_.Rv_unhandled;
-	}
-	public static final    String Invk_parse_to_html = "parse_to_html", Invk_wikidata_get_label = "wikidata_get_label", Invk_get_page = "get_page", Invk_cmd = "cmd", Invk_scripts_exec = "scripts_exec"
-	, Invk_get_search_suggestions = "get_search_suggestions", Invk_get_titles_meta = "get_titles_meta", Invk_get_titles_exists = "get_titles_exists", Invk_get_current_url = "get_current_url"
-	, Invk_xowa_exec_test = "xowa_exec_test", Invk_xowa_exec_test_as_array = "xowa_exec_test_as_array"
-	, Invk_popups_get_html = "popups_get_html"
-	, Invk_exec_json = "exec_json"
-	, Invk_bldr_exec = "bldr_exec"
-	;
-}
+package gplx.xowa.htmls.js;
+
+import gplx.Bool_;
+import gplx.Bry_;
+import gplx.Bry_bfr;
+import gplx.Bry_bfr_;
+import gplx.Bry_split_;
+import gplx.Byte_ascii;
+import gplx.Err_;
+import gplx.GfoMsg;
+import gplx.Gfo_invk;
+import gplx.Gfo_invk_;
+import gplx.GfsCtx;
+import gplx.Int_;
+import gplx.Object_;
+import gplx.String_;
+import gplx.core.threads.Thread_adp_;
+import gplx.xowa.Xoa_ttl;
+import gplx.xowa.Xoae_app;
+import gplx.xowa.Xoae_page;
+import gplx.xowa.Xowe_wiki;
+import gplx.xowa.guis.views.Xog_html_itm;
+import gplx.xowa.htmls.modules.popups.Xow_popup_mgr;
+import gplx.xowa.parsers.Xop_ctx;
+import gplx.xowa.parsers.Xop_root_tkn;
+import gplx.xowa.wikis.data.tbls.Xowd_page_itm;
+import gplx.xowa.xtns.pfuncs.ifs.Pfunc_ifexist;
+
+public class Xoh_js_cbk implements Gfo_invk {
+	private Xoae_app app;
+	private Xog_html_itm html_itm;
+	private Xop_root_tkn root = new Xop_root_tkn();
+	private final    Bry_bfr bfr = Bry_bfr_.Reset(255);
+	public Xoh_js_cbk(Xog_html_itm html_itm) {this.html_itm = html_itm; this.app = html_itm.Owner_tab().Tab_mgr().Win().App();}
+	private String Xowa_exec_test(GfoMsg m) {	// concat args with pipe; EX: xowa_exec('proc', 'arg0', 'arg1'); -> proc|arg0|arg1
+		bfr.Clear();
+		bfr.Add_str_u8(m.Key());
+		int len = m.Args_count();
+		for (int i = 0; i < len; i++)
+			bfr.Add_str_a7("|").Add_str_u8(m.Args_getAt(i).Val_to_str_or_empty());
+		return bfr.To_str_and_clear();
+	}
+	private String[] Xowa_exec_test_as_array(GfoMsg m) {// return args as array; EX: xowa_exec('proc', 'arg0', 'arg1'); -> proc,arg0,arg1
+		bfr.Clear();
+		int len = m.Args_count();
+		String[] rv = new String[len + 1];
+		rv[0] = Invk_xowa_exec_test_as_array;
+		for (int i = 0; i < len; i++)
+			rv[i + 1] = Object_.Xto_str_strict_or_empty(m.ReadValAt(i));
+		return rv;
+	}
+	private String Parse_to_html(GfoMsg m) {
+		Xowe_wiki wiki = html_itm.Owner_tab().Wiki();
+		Xop_ctx ctx = wiki.Parser_mgr().Ctx();
+		boolean old_para_enabled = ctx.Para().Enabled();
+		byte[] raw = Bry_.new_u8(m.Args_getAt(0).Val_to_str_or_empty());
+		boolean para_enabled = m.Args_count() < 2 ? false : Bool_.Parse(m.Args_getAt(1).Val_to_str_or_empty());
+		try {
+			ctx.Para().Enabled_(para_enabled);
+			wiki.Parser_mgr().Main().Parse_text_to_wdom(root, ctx, ctx.Tkn_mkr(), raw, 0);
+			byte[] data = root.Data_mid();
+			wiki.Html_mgr().Html_wtr().Write_doc(bfr, ctx, data, root);
+			return bfr.To_str_and_clear();
+		}
+		finally {
+			ctx.Para().Enabled_(old_para_enabled);
+		}
+	}
+	private String Get_page(GfoMsg m) {
+		Xowe_wiki wiki = html_itm.Owner_tab().Wiki();
+		try {
+			Xoa_ttl ttl = Xoa_ttl.Parse(wiki, m.Args_getAt(0).Val_to_bry());
+			Xoae_page page = wiki.Data_mgr().Load_page_by_ttl(ttl);
+			return String_.new_u8(page.Db().Text().Text_bry());
+		} catch (Exception e) {Err_.Noop(e); return null;}
+	}
+	private String Popups_get_html(GfoMsg m) {
+		try {
+			String mode			= m.Args_getAt(0).Val_to_str_or_empty();
+			String popups_id	= m.Args_getAt(1).Val_to_str_or_empty();
+
+			Xow_popup_mgr popup_mgr = html_itm.Owner_tab().Wiki().Html_mgr().Head_mgr().Popup_mgr();
+			if      (String_.Eq(mode, "init")) {
+				byte[] href_bry		= m.Args_getAt(2).Val_to_bry();
+				byte[] tooltip_bry	= m.Args_getAt(3).Val_to_bry();
+				return popup_mgr.Show_init(popups_id, href_bry, tooltip_bry);
+			}
+			else if (String_.Eq(mode, "more")) 
+				return popup_mgr.Show_more(popups_id);
+			else if (String_.Eq(mode, "all")) 
+				popup_mgr.Show_all(popups_id);
+			return "";
+		} catch (Exception e) {Err_.Noop(e); return null;}
+	}
+	private String[] Get_title_meta(Xowe_wiki wiki, byte[] ttl_bry) {
+		synchronized (tmp_page) {
+			tmp_page.Clear();
+			Xoa_ttl ttl = Xoa_ttl.Parse(wiki, ttl_bry);
+			wiki.Db_mgr().Load_mgr().Load_by_ttl(tmp_page, ttl.Ns(), ttl.Page_db());
+		}
+		return String_.Ary(tmp_page.Exists() ? "1" : "0", Int_.To_str(tmp_page.Id()), Int_.To_str(tmp_page.Ns_id()), String_.new_u8(tmp_page.Ttl_page_db()), Bool_.To_str_lower(tmp_page.Redirected()), tmp_page.Modified_on().XtoStr_fmt("yyyy-MM-dd HH:mm:ss"), Int_.To_str(tmp_page.Text_len()));
+	}	private static final    Xowd_page_itm tmp_page = Xowd_page_itm.new_tmp();
+	private String[][] Get_titles_meta(GfoMsg m) {
+		Xowe_wiki wiki = html_itm.Owner_tab().Wiki();
+		try {
+			byte[][] ttls = Bry_split_.Split(Bry_.new_u8((String)m.ReadValAt(0)), Byte_ascii.Nl);
+			int ttls_len = ttls.length;
+			String[][] rv = new String[ttls_len][];
+			for (int i = 0; i < ttls_len; i++) {
+				byte[] ttl = ttls[i];
+				rv[i] = Get_title_meta(wiki, ttl);
+			}
+			return rv;
+		} catch (Exception e) {Err_.Noop(e); return null;}
+	}
+	private boolean Get_title_exists(Xowe_wiki wiki, byte[] ttl) {
+		return Pfunc_ifexist.Exists(wiki, ttl);
+	}		
+	private String[] Get_titles_exists(GfoMsg m) {
+		Xowe_wiki wiki = html_itm.Owner_tab().Wiki();
+		try {
+			byte[][] ttls = Bry_.Ary_obj((Object[])m.ReadValAt(0));
+			int ttls_len = ttls.length;
+			String[] rv = new String[ttls_len];
+			for (int i = 0; i < ttls_len; i++) {
+				byte[] ttl = ttls[i];
+				rv[i] = Get_title_exists(wiki, ttl) ? "1" : "0";
+			}
+			return rv;
+		} catch (Exception e) {Err_.Noop(e); return null;}
+	}		
+	private String Get_search_suggestions(GfoMsg m) {
+		Xowe_wiki wiki = html_itm.Owner_tab().Wiki();
+		String search_str = (String)m.ReadValAt(0);
+		// 2021-03-02|ISSUE#:841|Pressing backspace on empty search box will generate a null
+		if (search_str == null) {
+			return "";
+		}
+		byte[] search_bry = Bry_.new_u8(search_str);
+		byte[] cbk_func = Bry_.new_u8((String)m.ReadValAt(1));
+		app.Addon_mgr().Itms__search__htmlbar().Search_by_swt(wiki, search_bry, cbk_func);
+		return "";
+	}
+	private String[] Wikidata_get_label(GfoMsg m) {
+		try {
+			Thread_adp_.Sleep(10);	// slow down calls to prevent random crashing in XulRunner; DATE:2014-04-23
+			gplx.xowa.xtns.wbases.Wdata_wiki_mgr wdata_mgr = app.Wiki_mgr().Wdata_mgr();
+			wdata_mgr.Wdata_wiki().Init_assert();	// NOTE: must assert else ns_mgr won't load Property
+			int len = m.Args_count();
+			if (len < 1) return null;
+			byte[][] langs = Bry_split_.Split(m.Args_getAt(0).Val_to_bry(), Byte_ascii.Semic);
+			int langs_len = langs.length;
+			String[] rv = new String[len - 1];
+			for (int i = 1; i < len; i++) {
+				try {
+					byte[] ttl_bry = m.Args_getAt(i).Val_to_bry();
+					gplx.xowa.xtns.wbases.Wdata_doc page = wdata_mgr.Doc_mgr.Get_by_xid_or_null(ttl_bry); if (page == null) continue;
+					for (int j = 0; j < langs_len; j++) {
+						byte[] lang_key = langs[j];
+						if		(Bry_.Eq(lang_key, Wikidata_get_label_xowa_ui_lang))
+							lang_key = app.Sys_cfg().Lang();
+						byte[] val_bry = null;
+						if		(Bry_.Eq(lang_key, Wikidata_get_label_xowa_title))
+							val_bry = ttl_bry;
+						else {
+							val_bry = page.Get_label_bry_or_null(lang_key);
+						}
+						if (val_bry == null) continue;
+						rv[i - 1] = String_.new_u8(val_bry);
+						break;
+					}
+				}	catch (Exception e) {Err_.Noop(e); rv[i] = null;}
+				finally {}
+			}
+			return rv;
+		} catch (Exception e) {Err_.Noop(e); return null;}
+	}
+	private String Scripts_exec(GfoMsg m) {
+		Object rv = null;
+		try {
+			rv = app.Gfs_mgr().Run_str(m.Args_getAt(0).Val_to_str_or_empty());
+		}
+		catch (Exception e) {Err_.Noop(e); return null;}
+		return Object_.Xto_str_strict_or_empty(rv);
+	}
+	private static final    byte[] Wikidata_get_label_xowa_ui_lang = Bry_.new_a7("xowa_ui_lang"), Wikidata_get_label_xowa_title = Bry_.new_a7("xowa_title");
+	public Object Invk(GfsCtx ctx, int ikey, String k, GfoMsg m) {
+		if		(ctx.Match(k, Invk_parse_to_html))						return Parse_to_html(m);
+		else if	(ctx.Match(k, Invk_wikidata_get_label))					return Wikidata_get_label(m);
+		else if	(ctx.Match(k, Invk_get_page))							return Get_page(m);
+		else if	(ctx.MatchIn(k, Invk_cmd, Invk_scripts_exec))			return Scripts_exec(m);
+		else if	(ctx.Match(k, Invk_scripts_exec))						return Scripts_exec(m);
+		else if	(ctx.Match(k, Invk_popups_get_html))					return Popups_get_html(m);
+		else if	(ctx.Match(k, Invk_get_search_suggestions))				return Get_search_suggestions(m);
+		else if	(ctx.Match(k, Invk_get_titles_meta))					return Get_titles_meta(m);
+		else if	(ctx.Match(k, Invk_get_titles_exists))					return Get_titles_exists(m);
+		else if	(ctx.Match(k, Invk_get_current_url))					return String_.new_u8(html_itm.Owner_tab().Page().Url().Raw());
+		else if	(ctx.Match(k, Invk_xowa_exec_test))						return Xowa_exec_test(m);
+		else if	(ctx.Match(k, Invk_xowa_exec_test_as_array))			return Xowa_exec_test_as_array(m);
+		else if	(ctx.Match(k, Invk_exec_json))							return app.Html__bridge_mgr().Cmd_mgr().Exec(m);
+		else if	(ctx.Match(k, Invk_bldr_exec))							return app.Bldr().Exec_json((String)m.ReadValAt(0));
+		else	return Gfo_invk_.Rv_unhandled;
+	}
+	public static final    String Invk_parse_to_html = "parse_to_html", Invk_wikidata_get_label = "wikidata_get_label", Invk_get_page = "get_page", Invk_cmd = "cmd", Invk_scripts_exec = "scripts_exec"
+	, Invk_get_search_suggestions = "get_search_suggestions", Invk_get_titles_meta = "get_titles_meta", Invk_get_titles_exists = "get_titles_exists", Invk_get_current_url = "get_current_url"
+	, Invk_xowa_exec_test = "xowa_exec_test", Invk_xowa_exec_test_as_array = "xowa_exec_test_as_array"
+	, Invk_popups_get_html = "popups_get_html"
+	, Invk_exec_json = "exec_json"
+	, Invk_bldr_exec = "bldr_exec"
+	;
+}