demo_listbox.sa

 
---------------------------> Sather 1.1 source file <--------------------------
-- Author: Matthias Ernst <tisi@beutlin.desy.de>
-- Copyright (C) 1995, International Computer Science Institute
-- $Id: demo_listbox.sa,v 1.3 1996/08/30 22:01:36 borisv Exp $
--
-- COPYRIGHT NOTICE: This code is provided WITHOUT ANY WARRANTY
-- and is subject to the terms of the SATHER LIBRARY GENERAL PUBLIC
-- LICENSE contained in the file: Sather/Doc/License of the
-- Sather distribution. The license is also available from ICSI,
-- 1947 Center St., Suite 600, Berkeley CA 94704, USA.


class DEMO_LISTBOX 
class DEMO_LISTBOX is
   include GUI_UTIL;
   
   attr listbox: TK_LISTBOX;
   attr entry: TK_ENTRY;
   attr button: TK_BUTTON;
   
   insert_item(i:TK_EVENT_INFO) is
      -- insert the entry's content at the end of the list
      
      listbox.insert(listbox.index_end, entry.get_text);
   end;
   
   print_list is
      -- print the content of the listbox to stdout
      -- two different ways should produce the same
      
      #OUT + "===== with get ! =======\n";
      loop
	 #OUT + listbox.get!(once 0, once listbox.index_end) + "\n";
      end;
      #OUT + "=== with get(index) ====\n";
      loop index ::= listbox.size.times!;
	 #OUT + listbox.get(index) + "\n"
      end;
      #OUT + "========================\n";
   end;
   
   init is
      listbox := #(root_window, "listbox",
		   TK_LISTBOX_CFG::std.selectmode_multiple, TK_PACK::left);
      entry   := #(root_window, "entry",   
		   TK_ENTRY_CFG::std,   TK_PACK::top);
      button  := #(root_window, "button", 
		   TK_BUTTON_CFG::std.text("Print list"), TK_PACK::top);
      button.command := bind(print_list);
			      
      entry.bind_event(TK_KEY_EVENT::Press.Return, bind(insert_item(_)));
   end;
   
end;