X-Git-Url: http://git.chise.org/gitweb/?a=blobdiff_plain;f=xex.js;h=f71985537df285fbb99c28ade994a2a605d3b5bb;hb=9a24cadd351eb05bafd709bc4fb7159573ebfbd1;hp=3b54b3c9fa5fb663a43c9678321aae8f53b8c945;hpb=713a77c067f8074eefd184866e46d6eac8437f6e;p=m17n%2Fm17n-lib-js.git

diff --git a/xex.js b/xex.js
index 3b54b3c..f719855 100644
--- a/xex.js
+++ b/xex.js
@@ -1,6 +1,23 @@
 // -* coding: utf-8; -*
 
-var Xex = {};
+var Xex = {
+  LogNode: null,
+  Log: function (arg, indent)
+  {
+    if (! Xex.LogNode)
+      return;
+    if (! arg)
+      Xex.LogNode.value = '';
+    else
+      {
+	var str = '';
+	if (indent != undefined)
+	  for (var i = 0; i <= indent; i++)
+	    str += '  ';
+	Xex.LogNode.value = str + arg + "\n" + Xex.LogNode.value;
+      }
+  }
+};
 
 Xex.Error = {
   UnknownError: "unknown-error",
@@ -74,7 +91,7 @@ Xex.Subrountine = function (builtin, name, with_var, min_args, max_args)
 
 Xex.Subrountine.prototype.Call = function (domain, vari, args)
 {
-  newargs = new Array ();
+  var newargs = new Array ();
   for (var i = 0; i < args.length; i++)
     {
       newargs[i] = args[i].Eval (domain);
@@ -171,9 +188,9 @@ Xex.Macro.prototype.Call = function (domain, vari, args)
       domain.Bind (this.args[i], args[i]);
     try {
       domain.Catch (Xex.CatchTag.Return);
-      for (var term in body)
+      for (var i in this.body)
         {
-	  result = term.Eval (domain);
+	  result = this.body[i].Eval (domain);
 	  if (domain.Thrown ())
 	    break;
 	}
@@ -388,12 +405,7 @@ Xex.Domain.prototype = {
   {
     values = {};
     for (var elt in this.variables)
-      {
-	//if (! this.variables[elt].val)
-	//alert ('unknown value of ' + elt);
-	//else
-	  values[elt] = this.variables[elt].val.Clone ();
-      }
+      values[elt] = this.variables[elt].val.Clone ();
     return values;
   },
   RestoreValues: function (values)
@@ -404,9 +416,7 @@ Xex.Domain.prototype = {
 	var vari = this.variables[name];
 	vari.val = values[name];
       }
-  },
-
-  Trace: function () {}
+  }
 };
 
 Xex.Term = function (type) { this.type = type; }
@@ -616,6 +626,7 @@ Xex.Varref = function (vname)
   {
     if (! this.vari || this.vari.domain != domain)
       this.vari = domain.GetVarCreate (this.val);
+    Xex.Log (this.ToString () + '=>' + this.vari.val, domain.depth);
     return this.vari.val;
   }
 
@@ -624,6 +635,11 @@ Xex.Varref = function (vname)
     return new Xex.Varref (node.attributes['vname'].nodeValue);
   }
 
+  proto.ToString = function ()
+  {
+    return '<varref vname="' + this.val + '"/>';
+  }
+
   Xex.Varref.prototype = proto;
 }) ();
 
@@ -649,7 +665,7 @@ Xex.Funcall = function (func, vari, args)
     var func = domain.GetFunc (fname);
     var vari;
     attr = node.attributes['vname'];
-    vari = attr != undefined ? domain.GetVarCreate (attr.nodeValue) : false;
+    vari = attr != undefined ? domain.GetVarCreate (attr.nodeValue) : null;
     var args = Xex.Term.Parse (domain, node.firstElement (), null);
     return new Xex.Funcall (func, vari, args);
   }
@@ -666,13 +682,14 @@ Xex.Funcall = function (func, vari, args)
 
   proto.Eval = function (domain)
   {
-    domain.Trace (this);
+    if (! (this.func instanceof Xex.Subrountine))
+      Xex.Log (this, domain.depth);
     domain.depth++;
+    var result;
     try {
-      var result = this.func.Call (domain, this.vari, this.args);
+      result = this.func.Call (domain, this.vari, this.args);
     } finally {
-      domain.depth--;
-      domain.Trace (' => ' + result + "\n");
+      Xex.Log (this + ' => ' + result, --domain.depth);
     }
     return result;
   }
@@ -694,11 +711,18 @@ Xex.Funcall = function (func, vari, args)
   {
     var arglist = ''
     var len = this.args.length;
+    var str = '<' + this.func.name;
+    if (this.vari)
+      str += ' vname="' + this.vari.name + '"';
     if (len == 0)
-      return '<' + this.func.name + '/>';
-    for (var i = 0; i < len; i++)
-      arglist += this.args[i].toString ();
-    return '<' + this.func.name + '>' + arglist + '</' + this.func.name + '>';
+      return str + '/>';
+    if (this.func instanceof Xex.Subrountine)
+      for (var i = 0; i < len; i++)
+	arglist += this.args[i].toString ();
+    else
+      for (var i = 0; i < len; i++)
+	arglist += '.';
+    return str + '>' + arglist + '</' + this.func.name + '>';
   }
 
   Xex.Funcall.prototype = proto;
@@ -779,7 +803,7 @@ Xex.StrTerm = function (str) { this.val = str; };
   proto.Clone = function () { return new Xex.StrTerm (this.val); }
   proto.Parser = function (domain, node)
   {
-    return new Xex.StrTerm (node.firstChild.nodeValue);
+    return new Xex.StrTerm (node.firstChild ? node.firstChild.nodeValue : '');
   }
   Xex.StrTerm.prototype = proto;
 }) ();
@@ -840,19 +864,6 @@ Xex.LstTerm = function (list) { this.val = list; };
 
   function Fset (domain, vari, args)
   {
-    return vari.SetValue (args[0]);
-  }
-
-  function maybe_set_intvar (vari, n)
-  {
-    var term = new Xex.IntTerm (n);
-    if (vari != null)
-      vari.SetValue (term);
-    return term;
-  }
-
-  function Fset (domain, vari, args)
-  {
     if (! vari)
       throw new Xex.ErrTerm (Xex.Error.NoVariableName,
 			     'No variable name to set');
@@ -860,9 +871,14 @@ Xex.LstTerm = function (list) { this.val = list; };
     return args[0];
   }
 
+  function Fnot (domain, vari, args)
+  {
+    return (args[0].IsTrue () ? Xex.Zero : Xex.One);
+  }
+
   function maybe_set_intvar (vari, n)
   {
-    var term = new IntTerm (n);
+    var term = new Xex.IntTerm (n);
     if (vari)
       vari.SetValue (term);
     return term;
@@ -937,6 +953,39 @@ Xex.LstTerm = function (list) { this.val = list; };
     return maybe_set_intvar (vari, n);
   }
 
+  function Flogand (domain, vari, args)
+  {
+    var n, i;
+    if (vari == null)
+      {
+	Xex.Log ("logand arg args[0]" + args[0]);
+	n = args[0].Intval ()
+	i = 1;
+      }
+    else
+      {
+	Xex.Log ("logand arg var " + vari);
+	n = vari.val.Intval ();
+	i = 0;
+      }
+    while (n > 0 && i < args.length)
+      {
+	Xex.Log ("logand arg " + args[i]);
+	n &= args[i++].val;
+      }
+    return maybe_set_intvar (vari, n);
+  }
+
+  function Flsh (domain, vari, args)
+  {
+    return maybe_set_intvar (vari, args[0].Intval () << args[1].Intval ());
+  }
+
+  function Frsh (domain, vari, args)
+  {
+    return maybe_set_intvar (vari, args[0].Intval () >> args[1].Intval ());
+  }
+
   function Fand (domain, vari, args)
   {
     var len = args.length;
@@ -973,13 +1022,18 @@ Xex.LstTerm = function (list) { this.val = list; };
     return Xex.One;
   }
 
+  function Fnoteq (domain, vari, args)
+  {
+    return (Feq (domain, vari, args) == Xex.One ? Xex.Zero : Xex.One);
+  }
+
   function Flt (domain, vari, args)
   {
-    var n = args[0].Intval;
+    var n = args[0].Intval ();
 
     for (var i = 1; i < args.length; i++)
       {
-	var n1 = args[i].Intval;
+	var n1 = args[i].Intval ();
 	if (n >= n1)
 	  return Xex.Zero;
 	n = n1;
@@ -989,10 +1043,10 @@ Xex.LstTerm = function (list) { this.val = list; };
 
   function Fle (domain, vari, args)
   {
-    var n = args[0].Intval;
+    var n = args[0].Intval ();
     for (var i = 1; i < args.length; i++)
       {
-	var n1 = args[i].Intval;
+	var n1 = args[i].Intval ();
 	if (n > n1)
 	  return Xex.Zero;
 	n = n1;
@@ -1002,10 +1056,10 @@ Xex.LstTerm = function (list) { this.val = list; };
 
   function Fgt (domain, vari, args)
   {
-    var n = args[0].Intval;
+    var n = args[0].Intval ();
     for (var i = 1; i < args.length; i++)
       {
-	var n1 = args[i].Intval;
+	var n1 = args[i].Intval ();
 	if (n <= n1)
 	  return Xex.Zero;
 	n = n1;
@@ -1015,10 +1069,10 @@ Xex.LstTerm = function (list) { this.val = list; };
 
   function Fge (domain, vari, args)
   {
-    var n = args[0].Intval;
+    var n = args[0].Intval ();
     for (var i = 1; i < args.Length; i++)
       {
-	var n1 = args[i].Intval;
+	var n1 = args[i].Intval ();
 	if (n < n1)
 	  return Xex.Zero;
 	n = n1;
@@ -1057,9 +1111,9 @@ Xex.LstTerm = function (list) { this.val = list; };
   {
     for (var i = 0; i < args.length; i++)
       {
-	var list = args[i].val;
-	var result = list.val[0].Eval (doamin);
-	if (result.isTrue ())
+	var list = args[i];
+	var result = list.val[0].Eval (domain);
+	if (result.IsTrue ())
 	  {
 	    for (var j = 1; j < list.val.length; j++)
 	      {
@@ -1146,11 +1200,9 @@ Xex.LstTerm = function (list) { this.val = list; };
   Xex.BasicDomain = basic;
 
   basic.DefSubr (Fset, "set", true, 1, 1);
-  if (basic.functions['='])
-    alert (basic.functions['=']);
   basic.DefAlias ("=", "set");
-  //basic.DefSubr (Fnot, "not", false, 1, 1);
-  //basic.DefAlias ("!", "not");
+  basic.DefSubr (Fnot, "not", false, 1, 1);
+  basic.DefAlias ("!", "not");
   basic.DefSubr (Fadd, "add", true, 1, -1);
   basic.DefSubr (Fmul, "mul", true, 1, -1);
   basic.DefAlias ("*", "mul");
@@ -1162,16 +1214,16 @@ Xex.LstTerm = function (list) { this.val = list; };
   basic.DefAlias ("%", "mod");
   basic.DefSubr (Flogior, "logior", true, 1, -1);
   basic.DefAlias ('|', "logior");
-  //basic.DefSubr (Flogand, "logand", true, 1, -1);
-  //basic.DefAlias ("&", "logand");
-  //basic.DefSubr (Flsh, "lsh", true, 1, 2);
-  //basic.DefAlias ("<<", "lsh");
-  //basic.DefSubr (Frsh, "rsh", true, 1, 2);
-  //basic.DefAlias (">>", "rsh");
+  basic.DefSubr (Flogand, "logand", true, 1, -1);
+  basic.DefAlias ("&", "logand");
+  basic.DefSubr (Flsh, "lsh", true, 1, 2);
+  basic.DefAlias ("<<", "lsh");
+  basic.DefSubr (Frsh, "rsh", true, 1, 2);
+  basic.DefAlias (">>", "rsh");
   basic.DefSubr (Feq, "eq", false, 2, -1);
   basic.DefAlias ("==", "eq");
-  //basic.DefSubr (Fnoteq, "noteq", false, 2, 2);
-  //basic.DefAlias ("!=", "noteq");
+  basic.DefSubr (Fnoteq, "noteq", false, 2, 2);
+  basic.DefAlias ("!=", "noteq");
   basic.DefSubr (Flt, "lt", false, 2, -1);
   basic.DefAlias ("<", "lt");
   basic.DefSubr (Fle, "le", false, 2, -1);
@@ -1296,6 +1348,8 @@ var MIM = {
   keysyms["del"] = "delete";
 
   function decode_keysym (str) {
+    if (str.length == 1)
+      return str;
     var parts = str.split ("-");
     var len = parts.length, i;
     var has_modifier = len > 1;
@@ -1333,7 +1387,9 @@ var MIM = {
   {
     this.key;
     this.has_modifier = false;
-    if (typeof val == 'string' || val instanceof String)
+    if (val instanceof Xex.Term)
+      this.key = val.val;
+    else if (typeof val == 'string' || val instanceof String)
       {
 	this.key = decode_keysym (val);
 	if (! this.key)
@@ -1351,6 +1407,10 @@ var MIM = {
   }
 
   MIM.Key.prototype.toString = function () { return this.key; };
+
+  MIM.Key.FocusIn = new MIM.Key (new Xex.StrTerm ('input-focus-in'));
+  MIM.Key.FocusOut = new MIM.Key (new Xex.StrTerm ('input-focus-out'));
+  MIM.Key.FocusMove = new MIM.Key (new Xex.StrTerm ('input-focus-move'));
 }) ();
 
 (function () {
@@ -1366,12 +1426,14 @@ var MIM = {
 	    var len = seq.val.length;
 	    for (var i = 0; i < len; i++)
 	      {
-		var v = seq.val[i];
-		if (v.type != 'string' && v.type != 'integer'
-		    && v.type != 'symbol')
+		var v = seq.val[i], key;
+		if (v.type == 'symbol' || v.type == 'string')
+		  key = new MIM.Key (v);
+		else if (v.type == 'integer')
+		  key = new MIM.Key (v.val);
+		else
 		  throw new Xex.ErrTerm (MIM.Error.ParseError,
 					 "Invalid key: " + v);
-		var key = new MIM.Key (v.val);
 		this.val.push (key);
 		if (key.has_modifier)
 		  this.has_modifier = true;
@@ -1428,24 +1490,16 @@ var MIM = {
   MIM.Marker.prototype.CharAt = function (ic)
   {
     var p = this.Position (ic);
-    if (p < 0)
-      return ic.GetSurroundingChar (p);
-    else if (p >= ic.preedit.length)
-      return ic.GetSurroundingChar (p - ic.preedit.length);
+    if (p < 0 || p >= ic.preedit.length)
+      return 0;
     return ic.preedit.charCodeAt (p);
   }
 
-  MIM.NamedMarker = function (name) { this.val = name; }
-  MIM.NamedMarker.prototype = new MIM.Marker ();
-  MIM.NamedMarker.prototype.Position = function (ic)
-  {
-    var p = ic.marker_positions[this.val];
-    return (p == undefined ? 0 : p);
-  }
-  MIM.NamedMarker.prototype.Mark = function (ic)
-  {
-    ic.marker_positions[this.val] = ic.cursor_pos;
-  }
+  MIM.FloatingMarker = function (name) { this.val = name; };
+  var proto = new MIM.Marker ();
+  MIM.FloatingMarker.prototype = proto;
+  proto.Position = function (ic) { return ic.marker_positions[this.val]; };
+  proto.Mark = function (ic) { ic.marker_positions[this.val] = ic.cursor_pos; };
 
   MIM.PredefinedMarker = function (name) { this.val = name; }
   MIM.PredefinedMarker.prototype = new MIM.Marker ();
@@ -1496,7 +1550,7 @@ var MIM = {
   MIM.SurroundMarker = function (name)
   {
     this.val = name;
-    this.distance = parseInt (name.slice (2));
+    this.distance = parseInt (name.slice (1));
     if (isNaN (this.distance))
       throw new Xex.ErrTerm (MIM.Error.ParseError, "Invalid marker: " + name);
   }
@@ -1505,6 +1559,17 @@ var MIM = {
   {
     return ic.cursor_pos + this.distance;
   }
+  MIM.SurroundMarker.prototype.CharAt = function (ic)
+  {
+    if (this.val == '@-0')
+      return -1;
+    var p = this.Position (ic);
+    if (p < 0)
+      return ic.GetSurroundingChar (p);
+    else if (p >= ic.preedit.length)
+      return ic.GetSurroundingChar (p - ic.preedit.length);
+    return ic.preedit.charCodeAt (p);
+  }
 
   MIM.Marker.prototype.Parser = function (domain, node)
   {
@@ -1514,12 +1579,12 @@ var MIM = {
 	var n = predefined[name];
 	if (n)
 	  return n;
-	if (name.charAt (1) == '-')
+	if (name.charAt (1) == '-' || name.charAt (1) == '+')
 	  return new MIM.SurroundMarker (name);
 	throw new Xex.ErrTerm (MIM.Error.ParseError,
 			       "Invalid marker: " + name);
       }
-    return new MIM.NamedMarker (name);
+    return new MIM.FloatingMarker (name);;
   }
 }) ();
 
@@ -1634,13 +1699,12 @@ MIM.Keymap = function ()
 {
   this.name = 'TOP';
   this.submaps = null;
-  this.actions = null;
 };
 
 (function () {
   var proto = {};
 
-  function add_rule (keymap, rule)
+  function add_rule (keymap, rule, branch_actions)
   {
     var keyseq = rule.keyseq;
     var len = keyseq.val.length;
@@ -1661,16 +1725,17 @@ MIM.Keymap = function ()
 	keymap = sub;
 	keymap.name = name;
       }
-    keymap.actions = rule.actions;
+    keymap.map_actions = rule.actions;
+    keymap.branch_actions = branch_actions;
   }
 
-  proto.Add = function (map)
+  proto.Add = function (map, branch_actions)
   {
     var rules = map.rules;
     var len = rules.length;
 
     for (var i = 0; i < len; i++)
-      add_rule (this, rules[i]);
+      add_rule (this, rules[i], branch_actions);
   }
   proto.Lookup = function (keys, index)
   {
@@ -1712,10 +1777,8 @@ MIM.State = function (name)
 	  {
 	    var n = node.firstElement ();
 	    if (node.nodeName == 'branch')
-	      {
-		state.keymap.Add (map_list[node.attributes['mname'].nodeValue]);
-		state.keymap.actions = Xex.Term.Parse (domain, n, null);
-	      }
+	      state.keymap.Add (map_list[node.attributes['mname'].nodeValue],
+				Xex.Term.Parse (domain, n, null));
 	    else if (node.nodeName == 'state-hook')
 	      state.enter_actions = Xex.Term.Parse (domain, n, null);
 	    else if (node.nodeName == 'catch-all-branch')
@@ -1959,13 +2022,6 @@ MIM.im_domain.DefType (MIM.Rule.prototype);
 MIM.im_domain.DefType (MIM.Map.prototype);
 MIM.im_domain.DefType (MIM.State.prototype);
 
-MIM.im_domain.Trace = function (arg)
-{
-  var node = document.getElementById ('log');
-  if (node)
-    node.value = "" + arg + node.value;
-};
-
 (function () {
   var im_domain = MIM.im_domain;
 
@@ -1976,24 +2032,24 @@ MIM.im_domain.Trace = function (arg)
       text = String.fromCharCode (args[0].val);
     else
       text = args[0].val;
-    domain.context.insert (text, null);
+    domain.context.ins (text, null);
+    return args[0];
   }
 
   function Finsert_candidates (domain, vari, args)
   {
     var ic = domain.context;
     var gsize = domain.variables['candidates_group_size'];
-    var candidates = new MIM.Candidates (args, gsize ? gsize.Intval : 0);
-    ic.insert (candidates.Current (), candidates);
+    var candidates = new MIM.Candidates (args, gsize ? gsize.Intval () : 0);
+    ic.ins (candidates.Current (), candidates);
     return args[0];
   }
 
   function Fdelete (domain, vari, args)
   {
     var ic = domain.context;
-    var pos = args[0].IsInt ? args[0].Intval : args[0].Position (ic);
-    ic.del (pos);
-    return new Xex.Term (ic.del (pos));
+    var pos = args[0].IsInt ? args[0].Intval () : args[0].Position (ic);
+    return new Xex.IntTerm (ic.del (pos));
   }
 
   function Fselect (domain, vari, args)
@@ -2003,18 +2059,32 @@ MIM.im_domain.Trace = function (arg)
 
     if (can)
       {
-	var candidate = can.Current ();
-
-	ic.del (ic.cursor_pos - candidate.length);
-	candidate = can.Select (args[0]);
-	ic.insert (candidate, can);
+	var old_text = can.Current ();
+	var new_text = can.Select (args[0]);
+	ic.rep (old_text, new_text, can);
       }
+    else
+      Xex.Log ('no candidates at ' + ic.cursor_pos + ' of ' + ic.candidate_table.table.length);
     return args[0];
   }
 
+  function Fshow (domain, vari, args)
+  {
+    domain.context.candidate_show = true;
+    domain.context.changed |= MIM.ChangedStatus.CandidateShow;
+    return Xex.nil;
+  }
+
+  function Fhide (domain, vari, args)
+  {
+    domain.context.candidate_show = false;
+    domain.context.changed |= MIM.ChangedStatus.CandidateShow;
+    return Xex.nil;
+  }
+
   function Fchar_at (domain, vari, args)
   {
-    return new Xex.Term (args[0].CharAt (domain.context));
+    return new Xex.IntTerm (args[0].CharAt (domain.context));
   }
 
   function Fmove (domain, vari, args)
@@ -2022,7 +2092,7 @@ MIM.im_domain.Trace = function (arg)
     var ic = domain.context;
     var pos = args[0].IsInt ? args[0].val : args[0].Position (ic);
     ic.move (pos);
-    return args[0];
+    return new Xex.IntTerm (pos);
   }
 
   function Fmark (domain, vari, args)
@@ -2033,21 +2103,29 @@ MIM.im_domain.Trace = function (arg)
 
   function Fpushback (domain, vari, args)
   {
-    var arg = (args[0].IsInt ? args[0].Intval
-	       : args[0].IsStr ? new KeySeq (args[0])
-	       : args[0]);
-    domain.context.pushback (arg)
+    var a = (args[0].IsInt ? args[0].Intval ()
+	     : args[0].IsStr ? new KeySeq (args[0])
+	     : args[0]);
+    domain.context.pushback (a);
     return args[0];
   }
 
+  function Fpop (domain, vari, args)
+  {
+    var ic = domain.context;
+    if (ic.key_head < ic.keys.val.length)
+      ic.keys.val.splice (ic.keys_head, 1);
+    return Xex.nil;
+  }
+
   function Fundo  (domain, vari, args)
   {
     var ic = domain.context;
     var n = args.length == 0 ? -2 : args[0].val;
     if (n < 0)
-      ic.keys.val.splice (ic.keys.length + n, -n);
+      ic.keys.val.splice (ic.keys.val.length + n, -n);
     else
-      ic.keys.val.splice (n, ic.keys.length);
+      ic.keys.val.splice (n, ic.keys.val.length);
     ic.reset ();
     return Xex.nil;
   }
@@ -2075,6 +2153,17 @@ MIM.im_domain.Trace = function (arg)
     return args[0];
   }
 
+  function Fshiftback (domain, vari, args)
+  {
+    domain.context.shift (null);
+    return Xex.nil;
+  }
+
+  function Fkey_count (domain, vari, args)
+  {
+    return new Xex.IntTerm (domain.context.key_head);
+  }
+
   function Fsurrounding_flag (domain, vari, args)
   {
     return new Xex.IntTerm (-1);
@@ -2084,19 +2173,19 @@ MIM.im_domain.Trace = function (arg)
   im_domain.DefSubr (Finsert_candidates, "insert-candidates", false, 1, 1);
   im_domain.DefSubr (Fdelete, "delete", false, 1, 1);
   im_domain.DefSubr (Fselect, "select", false, 1, 1);
-  //im_domain.DefSubr (Fshow, "show-candidates", false, 0, 0);
-  //im_domain.DefSubr (Fhide, "hide-candidates", false, 0, 0);
+  im_domain.DefSubr (Fshow, "show-candidates", false, 0, 0);
+  im_domain.DefSubr (Fhide, "hide-candidates", false, 0, 0);
   im_domain.DefSubr (Fmove, "move", false, 1, 1);
   im_domain.DefSubr (Fmark, "mark", false, 1, 1);
   im_domain.DefSubr (Fpushback, "pushback", false, 1, 1);
-  //im_domain.DefSubr (Fpop, "pop", false, 0, 0);
+  im_domain.DefSubr (Fpop, "pop", false, 0, 0);
   im_domain.DefSubr (Fundo, "undo", false, 0, 1);
   im_domain.DefSubr (Fcommit, "commit", false, 0, 0);
   im_domain.DefSubr (Funhandle, "unhandle", false, 0, 0);
   im_domain.DefSubr (Fshift, "shift", false, 1, 1);
-  //im_domain.DefSubr (Fshiftback, "shiftback", false, 0, 0);
+  im_domain.DefSubr (Fshiftback, "shiftback", false, 0, 0);
   im_domain.DefSubr (Fchar_at, "char-at", false, 1, 1);
-  //im_domain.DefSubr (Fkey_count, "key-count", false, 0, 0);
+  im_domain.DefSubr (Fkey_count, "key-count", false, 0, 0);
   im_domain.DefSubr (Fsurrounding_flag, "surrounding-text-flag", false, 0, 0);
 }) ();
 
@@ -2202,8 +2291,11 @@ MIM.im_domain.Trace = function (arg)
 		alert ('inclusion fail');
 		continue;
 	      }
-	    for (var mapname in im.map_list)
-	      this.map_list[mapname] = im.map_list[mapname];
+	    for (var mname in im.map_list)
+	      {
+		this.map_list[mname] = im.map_list[mname];
+		Xex.Log ('include map ' + mname);
+	      }
 	  }
 	else
 	  {
@@ -2217,7 +2309,21 @@ MIM.im_domain.Trace = function (arg)
     this.domain.map_list = this.map_list;
     for (node = node.firstElement (); node; node = node.nextElement ())
       {
-	if (node.nodeName == 'state')
+	if (node.nodeName == 'xi:include')
+	  {
+	    var im = include (node);
+	    if (! im)
+	      alert ('inclusion fail');
+	    for (var sname in im.state_list)
+	      {
+		state = im.state_list[sname];
+		if (! this.initial_state)
+		  this.initial_state = state;
+		this.state_list[sname] = state;
+		Xex.Log ('include state ' + sname);
+	      }
+	  }
+	else if (node.nodeName == 'state')
 	  {
 	    var state = Xex.Term.Parse (this.domain, node);
 	    if (! state.title)
@@ -2279,8 +2385,14 @@ MIM.im_domain.Trace = function (arg)
     this.target = target;
     this.domain = new Xex.Domain ('context', im.domain, this);
     this.active = true;
+    this.range = new Array ();
+    this.range[0] = this.range[1] = 0;
+    this.state = null;
+    this.initial_state = this.im.initial_state;
+    this.keys = new MIM.KeySeq ();
+    this.marker_positions = new Array ();
+    this.candidate_table = new MIM.CandidateTable ();
     this.reset ();
-    this.spot = 0;
   }
 
   MIM.CandidateTable = function ()
@@ -2288,12 +2400,12 @@ MIM.im_domain.Trace = function (arg)
     this.table = new Array ();
   }
 
-  MIM.CandidateTable.prototype.get = function (from)
+  MIM.CandidateTable.prototype.get = function (pos)
   {
     for (var i = 0; i < this.table.length; i++)
       {
 	var elt = this.table[i];
-	if (elt.from <= from && elt.to > from)
+	if (elt.from < pos && pos <= elt.to)
 	  return elt.val;
       }
   }
@@ -2303,8 +2415,7 @@ MIM.im_domain.Trace = function (arg)
     for (var i = 0; i < this.table.length; i++)
       {
 	var elt = this.table[i];
-	if (elt.from >= from && elt.from < to
-	    || elt.to >= from && elt.to < to)
+	if (elt.from < to && elt.to > from)
 	  {
 	    elt.from = from;
 	    elt.to = to;
@@ -2318,6 +2429,8 @@ MIM.im_domain.Trace = function (arg)
   MIM.CandidateTable.prototype.adjust = function (from, to, inserted)
   {
     var diff = inserted - (to - from);
+    if (diff == 0)
+      return;
     for (var i = 0; i < this.table.length; i++)
       {
 	var elt = this.table[i];
@@ -2339,18 +2452,15 @@ MIM.im_domain.Trace = function (arg)
     ic.candidate_table.clear ();
     ic.candidates = null;
     ic.changed |= (MIM.ChangedStatus.Preedit | MIM.ChangedStatus.CursorPos
-		   | ChangedStatus.CandidateList
-		   | ChangedStatus.CandidateIndex
-		   | ChangedStatus.CandidateShow);
+		   | MIM.ChangedStatus.CandidateList
+		   | MIM.ChangedStatus.CandidateIndex
+		   | MIM.ChangedStatus.CandidateShow);
   }
 
   function set_cursor (prefix, pos)
   {
     this.cursor_pos = pos;
-    if (pos > 0)
-      this.candidates = this.candidate_table.get (pos - 1);
-    else
-      this.candidates = null;
+    this.candidates = this.candidate_table.get (pos);
   }
 
   function save_state ()
@@ -2372,40 +2482,38 @@ MIM.im_domain.Trace = function (arg)
   {
     var out = this.keymap.Lookup (this.keys, this.key_head);
     var sub = out.map;
-    var branch_actions = this.state.keymap.actions;
 
-    this.domain.Trace ('handling ' + this.keys.val[this.key_head]
-		       + ' in ' + this.state.name + ':'
-		       + this.keymap.name + "\n");
+    Xex.Log ('handling ' + this.keys.val[this.key_head]
+	     + ' in ' + this.state.name + ':' + this.keymap.name);
     this.key_head = out.index;
     if (sub != this.keymap)
       {
 
 	restore_state.call (this);
 	this.keymap = sub;
-	this.domain.Trace ('submap found\n');
-	if (this.keymap.actions)
+	Xex.Log ('submap found');
+	if (this.keymap.map_actions)
 	  {
-	    this.domain.Trace ('taking map actions:\n');
-	    if (! this.take_actions (this.keymap.actions))
+	    Xex.Log ('taking map actions:');
+	    if (! this.take_actions (this.keymap.map_actions))
 	      return false;
 	  }
 	else if (this.keymap.submaps)
 	  {
-	    MIM.log ('no map actions');
+	    Xex.Log ('no map actions');
 	    for (var i = this.state_key_head; i < this.key_head; i++)
 	      {
-		MIM.log ('inserting key:' + this.keys.val[i].key);
-		this.insert (this.keys.val[i].key, null);
+		Xex.Log ('inserting key:' + this.keys.val[i].key);
+		this.ins (this.keys.val[i].key, null);
 	      }
 	  }
 	if (! this.keymap.submaps)
 	  {
-	    MIM.log ('terminal:');
+	    Xex.Log ('terminal:');
 	    if (this.keymap.branch_actions != null)
 	      {
-		MIM.log ('branch actions:');
-		if (! this.take_actions (branch_actions))
+		Xex.Log ('branch actions:');
+		if (! this.take_actions (this.keymap.branch_actions))
 		  return false;
 	      }
 	    if (this.keymap != this.state.keymap)
@@ -2414,24 +2522,24 @@ MIM.im_domain.Trace = function (arg)
       }
     else
       {
-	MIM.log ('no submap');
+	Xex.Log ('no submap');
 	var current_state = this.state;
 	var map = this.keymap;
 
-	if (branch_actions)
+	if (map.branch_actions)
 	  {
-	    MIM.log ('branch actions');
-	    if (! this.take_actions (this.keymap.branch_actions))
+	    Xex.Log ('branch actions');
+	    if (! this.take_actions (map.branch_actions))
 	      return false;
 	  }
 
 	if (map == this.keymap)
 	  {
-	    MIM.log ('no state change');
+	    Xex.Log ('no state change');
 	    if (map == this.initial_state.keymap
 		&& this.key_head < this.keys.val.length)
 	      {
-		MIM.log ('unhandled');
+		Xex.Log ('unhandled');
 		return false;
 	      }
 	    if (this.keymap != current_state.keymap)
@@ -2446,23 +2554,15 @@ MIM.im_domain.Trace = function (arg)
   proto = {
     reset: function ()
     {
-      this.produced = null;
-      this.preedit = '';
-      this.preedit_saved = '';
+      Xex.Log ('reseting ' + this.im.lang + '-' + this.im.name);
       this.cursor_pos = 0;
-      this.marker_positions = {};
-      this.candidates = null;
       this.candidate_show = false;
-      this.state = null;
       this.prev_state = null;
-      this.initial_state = this.im.initial_state;
       this.title = this.initial_state.title;
       this.state_preedit = '';
       this.state_key_head = 0;
       this.state_var_values = {};
       this.state_pos = 0;
-      this.keymap = null;
-      this.keys = new MIM.KeySeq ();
       this.key_head = 0;
       this.key_unhandled = false;
       this.unhandled_key = null;
@@ -2472,10 +2572,11 @@ MIM.im_domain.Trace = function (arg)
       this.produced = '';
       this.preedit = '';
       this.preedit_saved = '';
-      this.marker_positions = {};
-      this.candidate_table = new MIM.CandidateTable ();
+      this.candidate_table.clear ();
       this.candidates = null;
       this.candidate_show = false;
+      for (var elt in this.marker_positions)
+	this.marker_positions[elt] = 0;
       this.shift (this.initial_state);
     },
 
@@ -2493,19 +2594,66 @@ MIM.im_domain.Trace = function (arg)
 
     GetSurroundingChar: function (pos)
     {
-      if (pos < 0 ? this.caret_pos < - pos : this.target.value.length < pos)
-	return 0;
-      return this.target.value.charCodeAt (this.caret_pos + pos);
+      if (pos < 0)
+	{
+	  pos += this.range[0];
+	  if (pos < 0)
+	    return 0;
+	}
+      else
+	{
+	  pos += this.range[1];
+	  if (pos >= this.target.value.length)
+	    return 0;
+	}
+      return this.target.value.charCodeAt (pos);
     },
     
+    DelSurroundText: function (pos)
+    {
+      var text;
+      if (pos < 0)
+	{
+	  pos += this.range[0];
+	  if (pos <= 0)
+	    {
+	      pos = 0; text = '';
+	    }
+	  else
+	    text = this.target.value.substring (0, pos);
+	  if (this.range[0] < this.target.value.length)
+	    text += this.target.value.substring (this.range[0]);
+	  this.target.value = text;
+	  this.range[1] -= this.range[0] - pos;
+	  this.range[0] = pos;
+	}
+      else
+	{
+	  pos += this.range[1];
+	  text = this.target.value.substring (0, this.range[1]);
+	  if (pos >= this.target.value.length)
+	    pos = this.target.value.length;
+	  else
+	    text += this.target.value.substring (pos);
+	  this.target.value = text;
+	}
+    },
+
     adjust_markers: function (from, to, inserted)
     {
       var diff = inserted - (to - from);
 
-      for (var m in this.marker_positions)
-	if (this.marker_positions[m] > from)
-	  this.marker_positions[m] = (this.marker_positions[m] >= to
-				      ? pos + diff : from);
+      for (var name in this.marker_positions)
+	{
+	  var pos = this.marker_positions[name];
+	  if (pos > from)
+	    {
+	      if (pos >= to)
+		this.marker_positions[name] += diff;
+	      else if (pos > from)
+		this.marker_positions[name] = from;
+	    }
+	}
       if (this.cursor_pos >= to)
 	set_cursor.call (this, 'adjust', this.cursor_pos + diff);
       else if (this.cursor_pos > from)
@@ -2522,31 +2670,46 @@ MIM.im_domain.Trace = function (arg)
 	this.candidate_table.put (from, from + text.length, candidates)
     },
 
-    insert: function (text, candidates)
+    ins: function (text, candidates)
     {
       this.preedit_replace (this.cursor_pos, this.cursor_pos, text, candidates);
       this.changed = MIM.ChangedStatus.Preedit | MIM.ChangedStatus.CursorPos;
     },
 
+    rep: function (old_text, new_text, candidates)
+    {
+      this.preedit_replace (this.cursor_pos - old_text.length,
+			    this.cursor_pos, new_text, candidates);
+      this.changed = MIM.ChangedStatus.Preedit | MIM.ChangedStatus.CursorPos;
+    },
+
     del: function (pos)
     {
       var deleted = pos - this.cursor_pos;
-      if (pos < 0)
+      if (pos < this.cursor_pos)
 	{
-	  this.DelSurroundText (pos);
-	  pos = 0;
+	  if (pos < 0)
+	    {
+	      this.DelSurroundText (pos);
+	      deleted = - this.cursor_pos;
+	      pos = 0;
+	    }
+	  if (pos < this.cursor_pos)
+	    this.preedit_replace (pos, this.cursor_pos, '', null);
 	}
-      else if (pos > this.preedit.length)
+      else
 	{
-	  this.DelSurroundText (pos - this.preedit.length);
-	  pos = this.preedit.length;
+	  if (pos > this.preedit.length)
+	    {
+	      this.DelSurroundText (pos - this.preedit.length);
+	      deleted = this.preedit.length - this.cursor_pos;
+	      pos = this.preedit.length;
+	    }
+	  if (pos > this.cursor_pos)
+	    this.preedit_replace (this.cursor_pos, pos, '', null);
 	}
-      if  (pos < this.cursor_pos)
-	this.preedit = (this.predit.substring (0, pos)
-			+ this.preedit.substring (this.cursor_pos));
-      else
-	this.preedit = (this.preedit.substring (0, this.cursor_pos)
-			+ this.predit.substring (pos));
+      if (deleted != 0)
+	this.changed = MIM.ChangedStatus.Preedit | MIM.ChangedStatus.CursorPos;
       return deleted;
     },
 
@@ -2624,13 +2787,10 @@ MIM.im_domain.Trace = function (arg)
     {
       if (state == null)
         {
-	  MIM.log ("shifting back to previous");
 	  if (this.prev_state == null)
 	    return;
 	  state = this.prev_state;
 	}
-      else
-	MIM.log ("shifting to " + state.name);
 
       if (state == this.initial_state)
         {
@@ -2766,22 +2926,64 @@ MIM.im_domain.Trace = function (arg)
   keys[0x90] = "numlock";
   keys[0xF0] = "capslock";
 
+  var keyids = {};
+  keyids['U+0008'] = 'backspace';
+  keyids['U+0009'] = 'tab';
+  keyids['U+0018'] = 'cancel';
+  keyids['U+001B'] = 'escape';
+  keyids['U+0020'] = 'space';
+  keyids['U+007F'] = 'delete';
+
+  var modifiers = {}
+  modifiers.Shift = 1;
+  modifiers.Control = 1;
+  modifiers.Alt = 1;
+  modifiers.AltGraph = 1;
+  modifiers.Meta = 1
+
   MIM.decode_key_event = function (event)
   {
-    var key = ((event.type == 'keydown' || event.keyCode) ? event.keyCode
+    var key = event.keyIdentifier;
+
+    if (key)			// keydown event of Chrome
+      {
+	if (modifiers[key])
+	  return false;
+	var mod = '';
+	if (event.ctrlKey) mod += 'C-';
+	if (event.metaKey) mod += 'M-';
+	if (event.altKey) mod += 'A-';
+	var keysym = keyids[key];
+	if (keysym)
+	  key = keysym;
+	else if (key.match(/^U\+([0-9A-Z]+)$/))
+	  {
+	    if (mod.length == 0)
+	      return false;
+	    key = String.fromCharCode (parseInt (RegExp.$1, 16));
+	  }
+	else
+	  key = key.toLowerCase ();
+	if (event.shiftKey) mod += 'S-';
+	return new MIM.Key (mod + key);
+      }
+    else
+      {
+	key = ((event.type == 'keydown' || event.keyCode) ? event.keyCode
 	       : event.charCode ? event.charCode
 	       : false);
-    if (! key)
-      return false;
-    if (event.type == 'keydown')
-      {
-	key = keys[key];
 	if (! key)
 	  return false;
-	if (event.shiftKey) key = "S-" + key ;
+	if (event.type == 'keydown')
+	  {
+	    key = keys[key];
+	    if (! key)
+	      return false;
+	    if (event.shiftKey) key = "S-" + key ;
+	  }
+	else
+	  key = String.fromCharCode (key);
       }
-    else
-      key = String.fromCharCode (key);
     if (event.altKey) key = "A-" + key ;
     if (event.ctrlKey) key = "C-" + key ;
     return new MIM.Key (key);
@@ -2805,12 +3007,6 @@ MIM.add_event_listener
 	 = function (e) { listener.call (target, e || window.event); };
      });
 
-MIM.log = function (msg)
-{
-  var node = document.getElementById ('log');
-  node.value = msg + "\n" + node.value;
-}
-
 MIM.debug_print = function (event, ic)
 {
   if (! MIM.debug)
@@ -2818,10 +3014,10 @@ MIM.debug_print = function (event, ic)
   if (! MIM.debug_nodes)
     {
       MIM.debug_nodes = new Array ();
-      MIM.debug_nodes['keydown'] = document.getElementById ('keydown');
-      MIM.debug_nodes['keypress'] = document.getElementById ('keypress');
       MIM.debug_nodes['status0'] = document.getElementById ('status0');
       MIM.debug_nodes['status1'] = document.getElementById ('status1');
+      MIM.debug_nodes['keydown'] = document.getElementById ('keydown');
+      MIM.debug_nodes['keypress'] = document.getElementById ('keypress');
       MIM.debug_nodes['keymap0'] = document.getElementById ('keymap0');
       MIM.debug_nodes['keymap1'] = document.getElementById ('keymap1');
       MIM.debug_nodes['preedit0'] = document.getElementById ('preedit0');
@@ -2829,11 +3025,11 @@ MIM.debug_print = function (event, ic)
     }
   var target = event.target;
   var code = event.keyCode;
-  var ch = event.type == 'keydown' ? 0 : event.charCode;
+  var ch = event.type == 'keypress' ? event.charCode : 0;
   var key = MIM.decode_key_event (event);
   var index;
 
-  MIM.debug_nodes[event.type].innerHTML = "" + code + "/" + ch + " : " + key;
+  MIM.debug_nodes[event.type].innerHTML = "" + code + "/" + ch + ":" + key + '/' + event.keyIdentifier;
   index = (event.type == 'keydown' ? '0' : '1');
   if (ic)
     MIM.debug_nodes['status' + index].innerHTML = ic.im.load_status;
@@ -2841,14 +3037,22 @@ MIM.debug_print = function (event, ic)
     MIM.debug_nodes['status' + index].innerHTML = 'no IM';
   MIM.debug_nodes['keymap' + index].innerHTML = ic.state.name;
   MIM.debug_nodes['preedit' + index].innerHTML = ic.preedit;
+  if (index == 0)
+    {
+      MIM.debug_nodes.keypress.innerHTML = '';
+      MIM.debug_nodes.status1.innerHTML = '';
+      MIM.debug_nodes.keymap1.innerHTML = '';
+      MIM.debug_nodes.preedit1.innerHTML = ''
+    }
 };
 
-MIM.get_range = function (target, range)
+MIM.get_range = function (target, ic)
 {
+  var from, to;
   if (target.selectionStart != null) // for Mozilla
     {
-      range[0] = target.selectionStart;
-      range[1] = target.selectionEnd;
+      from = target.selectionStart;
+      to = target.selectionEnd;
     }
   else				// for IE
     {
@@ -2857,9 +3061,15 @@ MIM.get_range = function (target, range)
 
       rr.moveToElementText (target);
       rr.setEndPoint ('EndToEnd', range);
-      range[0] = rr.text.length - r.text.length;
-      range[1] = rr.text.length;
+      from = rr.text.length - r.text.length;
+      to = rr.text.length;
     }
+  if (ic.range[0] == from && ic.range[1] == to
+      && (to == from || target.value.substring (from, to) == ic.preedit))
+    return true;
+  ic.range[0] = from;
+  ic.range[1] = to;
+  return false;
 }
 
 MIM.set_caret = function (target, ic)
@@ -2867,87 +3077,142 @@ MIM.set_caret = function (target, ic)
   if (target.setSelectionRange)	// Mozilla
     {
       var scrollTop = target.scrollTop;
-      target.setSelectionRange (ic.spot, ic.spot + ic.preedit.length);
+      target.setSelectionRange (ic.range[0], ic.range[1]);
       target.scrollTop = scrollTop;
     }
   else				// IE
     {
       var range = target.createTextRange ();
-      range.moveStart ('character', ic.spot);
-      range.moveEnd ('character', ic.spot + ic.preedit.length);
+      range.moveStart ('character', ic.range[0]);
+      range.moveEnd ('character', ic.range[1]);
       range.select ();
     }
 };
 
-(function () {
-  var range = new Array ();
-
-  MIM.check_range = function (target, ic)
-  {
-    MIM.get_range (target, range);
-    if (range[0] != ic.spot || range[1] - range[0] != ic.preedit.length
-	|| target.value.substring (range[0], range[1]) != ic.preedit)
-      {
-	MIM.log ('reset:' + ic.spot + '-' + (ic.spot + ic.preedit.length)
-		 + '/' + range[0] + '-' + range[1]);
-	ic.reset ();
-      }
-    target.value = (target.value.substring (0, range[0])
-		    + target.value.substring (range[1]));
-    ic.spot = range[0];
-  }
-}) ();
+MIM.ignore_focus = false;
 
 MIM.update = function (target, ic)
 {
   var text = target.value;
-  target.value = (text.substring (0, ic.spot)
+  target.value = (text.substring (0, ic.range[0])
 		  + ic.produced
 		  + ic.preedit
-		  + text.substring (ic.spot));
-  ic.spot += ic.produced.length;
+		  + text.substring (ic.range[1]));
+  ic.range[0] += ic.produced.length;
+  ic.range[1] = ic.range[0] + ic.preedit.length;
   MIM.set_caret (target, ic);
 };
 
-MIM.reset_ic = function (event)
+MIM.focus_in = function (event)
+{
+  var target = event.target;
+  var ic = target.mim_ic;
+  if (ic)
+    {
+      if (target.mim_ignore_focus_in)
+	{
+	  Xex.Log ('ignore focus_in in ' + target.tagName);
+	  // Ignore this event which is caused by setSelectionRange ().
+	  target.mim_ignore_focus_in = false;
+	  event.preventDefault ();
+	}
+      else
+	{
+	  Xex.Log ('focus_in in ' + target.tagName);
+	  try {
+	    ic.Filter (MIM.Key.FocusIn);
+	    MIM.update (target, ic);
+	    // Ignore further focus-in caused by setSelectionRange ().
+	    // target.mim_ignore_focus_in = true;
+	  }
+	  catch (e) { Xex.Log ('Error:' + e); throw (e); }
+	}
+    }
+}
+
+MIM.focus_out = function (event)
 {
-  if (event.target.mim_ic)
+  var target = event.target;
+  var ic = target.mim_ic;
+  if (ic)
     {
-      var ic = event.target.mim_ic;
-      var pos = ic.spot + ic.preedit.length;
-      ic.reset ();
-      if (pos > ic.spot)
-	event.target.setSelectionRange (pos, pos);
+      if (target.mim_ignore_focus_out)
+	{
+	  Xex.Log ('ignore focus_out in ' + target.tagName);
+	  // Ignore this event which is caused by setSelectionRange ().
+	  target.mim_ignore_focus_out = false;
+	  event.preventDefault ();
+	}
+      else
+	{
+	  Xex.Log ('focus_out in ' + target.tagName);
+	  try {
+	    if (! MIM.get_range (target, ic))
+	      ic.reset ();
+	    ic.Filter (MIM.Key.FocusOut);
+	    // Ignore further focus-out caused by setSelectionRange ().
+	    target.mim_ignore_focus_in = true;
+	    target.mim_ignore_focus_out = true;
+	    MIM.update (target, ic);
+	  }
+	  catch (e) { Xex.Log ('Error:' + e); throw (e); }
+	}
     }
 };
 
 MIM.keydown = function (event)
 {
   var target = event.target;
+  if (target.id == 'log')
+    return;
   if (! (target.type == "text" || target.type == "textarea"))
     return;
+  document.akey = event;
 
   var ic = target.mim_ic;
   if (! ic || ic.im != MIM.current)
     {
-      MIM.log ('creating IC');
+      target.mim_ic = null;
+      Xex.Log ('creating IC');
       ic = new MIM.IC (MIM.current, target);
+      if (ic.im.load_status != MIM.LoadStatus.Loaded)
+	return;
       target.mim_ic = ic;
-      MIM.add_event_listener (target, 'blur', MIM.reset_ic);
+      MIM.add_event_listener (target, 'focus', MIM.focus_in);
+      MIM.add_event_listener (target, 'blur', MIM.focus_out);
+      MIM.get_range (target, ic)
+    }
+  else
+    {
+      if (! MIM.get_range (target, ic))
+	ic.reset ();
     }
-  if (ic.im.load_status != MIM.LoadStatus.Loaded)
-    return;
-  MIM.check_range (target, ic);
   MIM.debug_print (event, ic);
   ic.key = MIM.decode_key_event (event);
+  if (ic.key)
+    {
+      Xex.Log ("filtering " + ic.key);
+      try {
+	var result = ic.Filter (ic.key);
+      } catch (e) {
+	Xex.Log ('Error' + e);
+	throw (e);
+      }
+      MIM.update (target, ic);
+      if (! ic.key_unhandled)
+	event.preventDefault ();
+    }
 };
 
 MIM.keypress = function (event)
 {
-  if (! (event.target.type == "text" || event.target.type == "textarea"))
+  var target = event.target;
+  if (target.id == 'log')
+    return;
+  if (! (target.type == "text" || target.type == "textarea"))
     return;
 
-  var ic = event.target.mim_ic;
+  var ic = target.mim_ic;
   var i;
 
   try {
@@ -2961,77 +3226,281 @@ MIM.keypress = function (event)
 	return;
       }
     
-    MIM.log ("filtering " + ic.key);
-    var result = ic.Filter (ic.key);
-    MIM.update (event.target, ic);
+    Xex.Log ("filtering " + ic.key);
+    try {
+      var result = ic.Filter (ic.key);
+    } catch (e) {
+      Xex.Log ('Error;' + e);
+      throw (e);
+    }
+    MIM.update (target, ic);
     if (! ic.key_unhandled)
       event.preventDefault ();
+  } catch (e) {
+    Xex.Log ("error:" + e);
+    event.preventDefault ();
   } finally {
     MIM.debug_print (event, ic);
   }
   return;
 };
 
-MIM.select_im = function (event)
-{
-  var target = event.target.parentNode;
-  while (target.tagName != "SELECT")
-    target = target.parentNode;
-  var idx = 0;
-  var im = false;
-  for (var lang in MIM.imlist)
-    for (var name in MIM.imlist[lang])
-      if (idx++ == target.selectedIndex)
-	{
-	  im = MIM.imlist[lang][name];
-	  break;
-	}
-  document.getElementsByTagName ('body')[0].removeChild (target);
-  target.target.focus ();
-  if (im && im != MIM.current)
-    {
-      MIM.current = im;
-      MIM.log ('select IM: ' + im.name);
-    }
-};
+(function () {
+  var lang_category = {
+    European: {
+      cs: { name: 'Czech' },
+      da: { name: 'Danish' },
+      el: { name: 'Greek' },
+      en: { name: 'English' },
+      eo: { name: 'Esperanto' },
+      fr: { name: 'French' },
+      grc: { name: 'ClassicGreek' },
+      hr: { name: 'Croatian' },
+      hy: { name: 'Armenian' },
+      ka: { name: 'Georgian' },
+      kk: { name: 'Kazakh' },
+      ru: { name: 'Russian' },
+      sk: { name: 'Slovak' },
+      sr: { name: 'Serbian' },
+      sv: { name: 'Swedish' },
+      vi: { name: 'Vietnamese' },
+      yi: { name: 'Yiddish' } },
+    MiddleEast: {
+      ar: { name: 'Arabic' },
+      dv: { name: 'Divehi' },
+      fa: { name: 'Persian' },
+      he: { name: 'Hebrew' },
+      kk: { name: 'Kazakh' },
+      ps: { name: 'Pushto' },
+      ug: { name: 'Uighur' },
+      yi: { name: 'Yiddish' } },
+    SouthAsia: {
+      as: { name: 'Assamese' },
+      bn: { name: 'Bengali' },
+      bo: { name: 'Tibetan' },
+      gu: { name: 'Gujarati' },
+      hi: { name: 'Hindi' },
+      kn: { name: 'Kannada' },
+      ks: { name: 'Kashmiri' },
+      ml: { name: 'Malayalam' },
+      mr: { name: 'Marathi' },
+      ne: { name: 'Nepali' },
+      or: { name: 'Oriya' },
+      pa: { name: 'Panjabi' },
+      sa: { name: 'Sanskirit' },
+      sd: { name: 'Sindhi' },
+      si: { name: 'Sinhalese' },
+      ta: { name: 'Tamil' },
+      te: { name: 'Telugu' },
+      ur: { name: 'Urdu' } },
+    SouthEastAsia: {
+      cmc: { name: 'Cham' },
+      km: { name: 'Khmer'},
+      lo: { name: 'Lao' },
+      my: { name: 'Burmese' },
+      tai: { name: 'Tai Viet' },
+      th: { name: 'Thai' },
+      vi: { name: 'Vietanamese' } },
+    EastAsia: {
+      ii: { name: 'Yii' },
+      ja: { name: 'Japanese' },
+      ko: { name: 'Korean' },
+      zh: { name: 'Chinese' } },
+    Other: {
+      am: { name:  'Amharic' },
+      ath: { name: 'Carrier' },
+      bla: { name: 'Blackfoot' },
+      cr: { name: 'Cree' },
+      eo: { name: 'Esperanto' },
+      iu: { name: 'Inuktitut' },
+      nsk: { name: 'Naskapi' },
+      oj: { name: 'Ojibwe' },
+      t: { name: 'Generic' } }
+  };
+
+  function categorize_im ()
+  {
+    var cat, lang, list, name;
+    for (lang in MIM.imlist)
+      {
+	list = null;
+	for (cat in lang_category)
+	  if (lang_category[cat][lang])
+	    {
+	      list = lang_category[cat][lang].list;
+	      if (! list)
+		list = lang_category[cat][lang].list = {};
+	      break;
+	    }
+	if (list)
+	  for (name in MIM.imlist[lang])
+	    list[name] = MIM.imlist[lang][name];
+	else
+	  for (name in MIM.imlist[lang])
+	    Xex.Log ('no category ' + lang + '-' + name);
+      }
+  }
 
-MIM.destroy_menu = function (event)
-{
-  if (event.target.tagName == "SELECT")
-    document.getElementsByTagName ('body')[0].removeChild (event.target);
-};
+  var destroy_timer;
+  var last_target;
 
-MIM.select_menu = function (event)
-{
-  var target = event.target;
+  function destroy ()
+  {
+    clearTimeout (destroy_timer);
+    destroy_timer = null;
+    var target = document.getElementById ('mim-menu');
+    if (target)
+      {
+	for (; last_target && last_target.menu_level;
+	     last_target = last_target.parentLi)
+	  last_target.style.backgroundColor = 'white';
+	var nodes = target.getElementsByTagName ('ul');
+	for (var i = 0; i < nodes.length; i++)
+	  nodes[i].style.visibility = 'hidden';
+	document.getElementsByTagName ('body')[0].removeChild (target);
+      }
+  }    
 
-  if (! ((target.type == "text" || target.type == "textarea")
-	 && event.which == 1 && event.ctrlKey))
-    return;
+  function destroy_menu () {
+    if (! destroy_timer)
+      destroy_timer = setTimeout (destroy, 1000);
+  }
 
-  var sel = document.createElement ('select');
-  sel.onclick = MIM.select_im;
-  sel.onmouseout = MIM.destroy_menu;
-  sel.style.position='absolute';
-  sel.style.left = (event.clientX - 10) + "px";
-  sel.style.top = (event.clientY - 10) + "px";
-  sel.target = target;
-  var idx = 0;
-  for (var lang in MIM.imlist)
-    for (var name in MIM.imlist[lang])
-      {
-	var option = document.createElement ('option');
-	var imname = lang + "-" + name;
-	option.appendChild (document.createTextNode (imname));
-	option.value = imname;
-	sel.appendChild (option);
-	if (MIM.imlist[lang][name] == MIM.current)
-	  sel.selectedIndex = idx;
-	idx++;
-      }
-  sel.size = idx;
-  document.getElementsByTagName ('body')[0].appendChild (sel);
-};
+  function show_submenu (event)
+  {
+    if (destroy_timer)
+      {
+	clearTimeout (destroy_timer);
+	destroy_timer = null;
+      }
+    var target = event.target;
+    if (! target.menu_level)
+      return;
+    if (last_target && target.parentLi != last_target)
+      {
+	last_target.style.backgroundColor = 'white';
+	if (target.menu_level < last_target.menu_level)
+	  {
+	    last_target = last_target.parentLi;
+	    last_target.style.backgroundColor = 'white';
+	  }
+	var uls = last_target.getElementsByTagName ('ul');
+	for (var i = 0; i < uls.length; i++)
+	  uls[i].style.visibility = 'hidden';
+      }
+    last_target = target;
+    target.style.backgroundColor = 'yellow';
+    if (target.menu_level < 3)
+      {
+	target.lastChild.style.visibility = 'visible';
+	target.lastChild.style.left = target.clientWidth + 'px';
+      }
+    event.preventDefault ();	
+  }
+
+  function select_im (event)
+  {
+    var target = event.target;
+    if (target.im)
+      {
+	MIM.current = target.im;
+	destroy ();
+      }
+    event.preventDefault ();
+  }
+
+  function create_ul (visibility)
+  {
+    var ul = document.createElement ('ul');
+    ul.style.position = 'absolute';
+    ul.style.margin = '0px';
+    ul.style.padding = '0px';
+    ul.style.border = '1px solid gray';
+    ul.style.borderBottom = 'none';
+    ul.style.top = '-1px';
+    ul.style.backgroundColor = 'white';
+    ul.style.visibility = visibility;
+    return ul;
+  }
+
+  function create_li (level, text)
+  {
+    var li = document.createElement ('li');
+    li.style.position = 'relative';
+    li.style.margin = '0px';
+    li.style.padding = '1px';
+    li.style.borderBottom = '1px solid gray';
+    li.style.top = '0px';
+    li.style.listStyle = 'none';
+    li.menu_level = level;
+    li.appendChild (document.createTextNode (text));
+    return li;
+  }
+
+  var menu;
+
+  function create_menu (event)
+  {
+    var target = event.target;
+
+    if (! ((target.type == "text" || target.type == "textarea")
+	   && event.which == 1 && event.ctrlKey))
+      return;
+    if (! menu)
+      {
+	categorize_im ();
+	menu = create_ul ('visible');
+	menu.style.fontFamily = 'sans-serif';
+	menu.style.fontWeight = 'bold';
+	menu.id = 'mim-menu';
+	menu.onclick = select_im;
+	menu.onmouseover = show_submenu;
+	menu.onmouseout = destroy_menu;
+	for (var catname in lang_category)
+	  {
+	    var cat = lang_category[catname];
+	    var li = create_li (1, catname);
+	    var sub = create_ul ('hidden');
+	    for (var langname in cat)
+	      {
+		var lang = cat[langname];
+		if (! lang.list)
+		  continue;
+		var sub_li = create_li (2, lang.name);
+		sub_li.parentLi = li;
+		var subsub = create_ul ('hidden');
+		for (var name in lang.list)
+		  {
+		    var im = lang.list[name];
+		    var subsub_li = create_li (3, im.name);
+		    subsub_li.parentLi = sub_li;
+		    subsub_li.im = im;
+		    subsub.appendChild (subsub_li);
+		  }
+		sub_li.appendChild (subsub);
+		sub.appendChild (sub_li);
+	      }
+	    li.appendChild (sub);
+	    menu.appendChild (li);
+	  }
+	document.mimmenu = menu;
+	lang_category = null;
+      }
+    menu.style.left = (event.clientX - 10) + "px";
+    menu.style.top = (event.clientY - 10) + "px";
+    document.getElementsByTagName ('body')[0].appendChild (menu);
+  };
+
+  MIM.init = function ()
+  {
+    MIM.add_event_listener (window, 'keydown', MIM.keydown);
+    MIM.add_event_listener (window, 'keypress', MIM.keypress);
+    MIM.add_event_listener (window, 'mousedown', create_menu);
+    if (window.location == 'http://localhost/mim/index.html')
+      MIM.server = 'http://localhost/mim';
+    MIM.current = MIM.imlist['vi']['telex'];
+  };
+}) ();
 
 MIM.test = function ()
 {
@@ -3056,18 +3525,10 @@ MIM.test = function ()
 }
 
 
-MIM.init = function ()
-{
-  MIM.add_event_listener (window, 'keydown', MIM.keydown);
-  MIM.add_event_listener (window, 'keypress', MIM.keypress);
-  MIM.add_event_listener (window, 'mousedown', MIM.select_menu);
-  if (window.location == 'http://localhost/mim/index.html')
-    MIM.server = 'http://localhost/mim';
-  MIM.current = MIM.imlist['vi']['telex'];
-};
-
 MIM.init_debug = function ()
 {
   MIM.debug = true;
+  Xex.LogNode = document.getElementById ('log');
+  Xex.Log (null);
   MIM.init ();
 };