using System;
using System.Collections;
using System.Collections.Generic;
+using System.Reflection;
using System.IO;
+using System.Xml;
+
using M17N;
using M17N.Core;
using M17N.Input;
namespace M17N.Input
{
+ using Xex = System.Xml.Expression.Xexpression;
+ using Mim = MInputMethod;
+
public class MInputMethod
{
- private class MInputAction
+ // Delegaes
+ public delegate bool Callback (MInputContext ic, MPlist args);
+
+ // Class members
+ public static Callback PreeditStart, PreeditDone, PreeditDraw;
+ public static Callback StatusStart, StatusDone, StatusDraw;
+ public static Callback CandidateStart, CandidateDone, CandidateDraw;
+ public static Callback SetSpot;
+ public static Callback Toggle;
+ public static Callback Reset;
+ public static Callback GetSurroundingText;
+ public static Callback DeleteSurroundingText;
+
+ internal static Xex.Domain im_domain = new Xex.Domain (null);
+ private static MSymbol Minput_method = "input-method";
+ private static MSymbol Mdescription = "description";
+ private static MSymbol Mvariable = "variable";
+ private static MSymbol Mcommand = "command";
+ private static MSymbol Mmodule = "module";
+ private static MSymbol Mtitle = "title";
+ private static MSymbol Minclude = "include";
+ private static MSymbol Mmacro = "macro";
+ private static MSymbol Mmap = "map";
+ private static MSymbol Mmap_list = "map-list";
+ private static MSymbol Mstate = "state";
+ internal static MSymbol Mcandidates = "candidates";
+ private static MSymbol Minsert = "insert";
+ private static MSymbol Mdelete = "delete";
+ private static MSymbol Mmove = "move";
+ private static MSymbol Mmark = "mark";
+ private static MSymbol Mmarker = "marker";
+ private static MSymbol Mset = "set";
+ private static MSymbol Madd = "add";
+ private static MSymbol Msub = "sub";
+ private static MSymbol Mmul = "mul";
+ private static MSymbol Mdiv = "div";
+ private static MSymbol Mif = "if";
+ private static MSymbol Mcond = "cond";
+ private static MSymbol Mchar_at = "char-at";
+ private static MSymbol Msurrounding_text_p = "surrounding-text-p";
+ private static MSymbol Mpushback = "pushback";
+ private static MSymbol Mkeyseq = "keyseq";
+
+ private static Xex.Symbol Nprogn = "progn";
+ private static Xex.Term Tnil = new Xex.Term ((Xex.Symbol) "nil");
+ private static Xex.Term Tcatch_tag = new Xex.Term ((Xex.Symbol) "@mimtag");
+
+ private static Dictionary<MDatabase.Tag, MInputMethod> im_table
+ = new Dictionary<MDatabase.Tag, MInputMethod> ();
+
+ internal static MInputMethod im_global = null;
+
+ [FlagsAttribute]
+ private enum LoadStatus
+ {
+ None = 0x00,
+ Header = 0x01,
+ Body = 0x02,
+ Full = 0x03,
+ Error = 0x04,
+ };
+
+ [FlagsAttribute]
+ public enum ChangedStatus
{
- MExpression[] expr_list;
+ None = 0x00,
+ StateTitle = 0x01,
+ Preedit = 0x02,
+ CursorPos = 0x04,
+ CandidateList = 0x08,
+ CandidateIndex = 0x10,
+ CandidateShow = 0x20,
}
- private class MInputMethodMap
+ private static ChangedStatus CandidateAll = (ChangedStatus.CandidateList
+ | ChangedStatus.CandidateIndex
+ | ChangedStatus.CandidateShow);
+ [FlagsAttribute]
+ public enum KeyModifier
+ {
+ None = 0x00000000,
+ Shift_L = 0x00400000,
+ Shift_R = 0x00800000,
+ Shift = 0x00C00000,
+ Control_L = 0x01000000,
+ Control_R = 0x02000000,
+ Control = 0x03000000,
+ Alt_L = 0x04000000,
+ Alt_R = 0x08000000,
+ Alt = 0x0C000000,
+ AltGr = 0x10000000,
+ Super = 0x20000000,
+ Hyper = 0x40000000,
+ High = 0x70000000,
+ All = 0x7FC00000,
+ };
+
+ public struct Key
+ {
+ internal uint key;
+
+ private static Dictionary<string, uint> keysyms
+ = new Dictionary<string, uint> ();
+ private static Dictionary<string, KeyModifier> keymodifiers
+ = new Dictionary<string, KeyModifier> ();
+ private static uint keysym_base = 0x200000;
+ private static uint char_mask = ~((uint) KeyModifier.All);
+
+ static Key ()
+ {
+ keysyms["bs"] = keysyms["backspace"] = 0x08;
+ keysyms["tab"] = 0x09;
+ keysyms["lf"] = keysyms["linefeed"] = 0x10;
+ keysyms["cr"] = keysyms["return"] = keysyms["enter"] = 0x13;
+ keysyms["esc"] = keysyms["escape"] = 0x1B;
+ keysyms["spc"] = keysyms["space"] = 0x20;
+ keysyms["del"] = keysyms["delete"] = 0x7F;
+ keymodifiers["shift-l"] = KeyModifier.Shift_L;
+ keymodifiers["shift-r"] = KeyModifier.Shift_R;
+ keymodifiers["shift"] = KeyModifier.Shift;
+ keymodifiers["control-l"] = KeyModifier.Control_L;
+ keymodifiers["control-r"] = KeyModifier.Control_R;
+ keymodifiers["control"] = KeyModifier.Control;
+ keymodifiers["alt-l"] = KeyModifier.Alt_L;
+ keymodifiers["alt-r"] = KeyModifier.Alt_R;
+ keymodifiers["alt"] = KeyModifier.Alt;
+ keymodifiers["altgr"] = KeyModifier.AltGr;
+ keymodifiers["super"] = KeyModifier.Super;
+ keymodifiers["hyper"] = KeyModifier.Hyper;
+ }
+
+ private static uint decode_keysym (MSymbol keysym)
+ {
+ uint key;
+ string name = keysym.Name;
+
+ if (name.Length == 1)
+ return name[0];
+ name = name.ToLower ();
+ if (! keysyms.TryGetValue (name, out key))
+ keysyms[name] = key = keysym_base++;
+ return key;
+ }
+
+ private static uint combine_modifiers (uint c, KeyModifier modifiers)
+ {
+ if (c < 0x7F && c != 0x20)
+ {
+ if ((modifiers & KeyModifier.Shift) != KeyModifier.None
+ && Char.IsLower ((char) c))
+ {
+ modifiers &= ~KeyModifier.Shift;
+ c = Char.ToUpper ((char) c);
+ }
+ if ((modifiers & KeyModifier.Control) != KeyModifier.None)
+ {
+ modifiers &= ~KeyModifier.Control;
+ c &= 0x1F;
+ }
+ }
+ return c | (uint) modifiers;
+ }
+
+ public Key (uint c) { key = c; }
+ public Key (int c) { key = (uint) c; }
+
+ public Key (uint c, KeyModifier modifiers)
+ {
+ key = combine_modifiers (c, modifiers);
+ }
+
+ public Key (MSymbol keysym, KeyModifier modifiers)
+ {
+ key = combine_modifiers (decode_keysym (keysym), modifiers);
+ }
+
+ public Key (MSymbol keysym)
+ {
+ string str = keysym.Name;
+ int len = str.Length;
+ int i;
+ KeyModifier modifiers = KeyModifier.None;
+
+ for (i = 0; i + 2 < len && str[i + 1] == '-'; i += 2)
+ {
+ if (str[i] == 'S')
+ modifiers |= KeyModifier.Shift;
+ else if (str[i] == 'C')
+ modifiers |= KeyModifier.Control;
+ else if (str[i] == 'A')
+ modifiers |= KeyModifier.Alt;
+ else if (str[i] == 'G')
+ modifiers |= KeyModifier.AltGr;
+ else if (str[i] == 's')
+ modifiers |= KeyModifier.Super;
+ else if (str[i] == 'H')
+ modifiers |= KeyModifier.Hyper;
+ }
+ if (i + 1 == len)
+ key = combine_modifiers (str[i], modifiers);
+ else
+ key = combine_modifiers (decode_keysym (keysym), modifiers);
+ }
+
+ public Key (MPlist plist)
+ {
+ KeyModifier modifiers = KeyModifier.None;
+ MPlist p;
+
+ for (p = plist; ! p.IsEmpty; p = p.next)
+ {
+ if (p.IsInteger)
+ {
+ if (! p.next.IsEmpty)
+ throw new Exception ("Invalid Key: " + plist);
+ break;
+ }
+ else if (! p.IsSymbol)
+ throw new Exception ("Invalid Key: " + plist);
+ else
+ {
+ string name = p.Symbol.Name.ToLower ();
+ KeyModifier m;
+
+ if (! keymodifiers.TryGetValue (name, out m))
+ break;
+ modifiers |= m;
+ }
+ }
+ if (p.IsEmpty || ! p.next.IsEmpty)
+ throw new Exception ("Invalid Key: " + plist);
+ if (p.IsInteger)
+ key = combine_modifiers ((uint) p.Integer, modifiers);
+ else
+ key = combine_modifiers (decode_keysym (p.Symbol), modifiers);
+ }
+
+ public bool HasModifier
+ {
+ get { return ((key & (uint) KeyModifier.All) != 0); }
+ }
+
+ public bool Match (Key k)
+ {
+ if (k.key == key)
+ return true;
+ if ((k.key & char_mask) != (key & char_mask))
+ return false;
+ KeyModifier m1 = ((KeyModifier) key) & KeyModifier.All;
+ KeyModifier m2 = ((KeyModifier) k.key) & KeyModifier.All;
+ return (((m1 & KeyModifier.Shift) == (m2 & KeyModifier.Shift)
+ || ((m1 & KeyModifier.Shift) == KeyModifier.Shift
+ && (m2 & KeyModifier.Shift) != KeyModifier.None))
+ && ((m1 & KeyModifier.Control) == (m2 & KeyModifier.Control)
+ || ((m1 & KeyModifier.Control) == KeyModifier.Control
+ && (m2 & KeyModifier.Control) != KeyModifier.None))
+ && ((m1 & KeyModifier.Alt) == (m2 & KeyModifier.Alt)
+ || ((m1 & KeyModifier.Alt) == KeyModifier.Alt
+ && (m2 & KeyModifier.Alt) != KeyModifier.None))
+ && ((m1 & KeyModifier.High) == (m2 & KeyModifier.High)));
+ }
+
+ public override string ToString ()
+ {
+ string str = Char.ToString ((char) key);
+ KeyModifier m = ((KeyModifier) key) & KeyModifier.All;
+
+ if (m != KeyModifier.None)
+ {
+ if ((m & KeyModifier.Shift) != KeyModifier.None)
+ str = "S-" + str;
+ if ((m & KeyModifier.Control) != KeyModifier.None)
+ str = "C-" + str;
+ if ((m & KeyModifier.Alt) != KeyModifier.None)
+ str = "A-" + str;
+ if ((m & KeyModifier.AltGr) != KeyModifier.None)
+ str = "G-" + str;
+ if ((m & KeyModifier.Super) != KeyModifier.None)
+ str = "s-" + str;
+ if ((m & KeyModifier.Hyper) != KeyModifier.None)
+ str = "H-" + str;
+ }
+ return str;
+ }
+ }
+
+ public class KeySeq : Xex.TermValue
+ {
+ public List<Key> keyseq = new List<Key> ();
+
+ public override Xex.TermValue Clone ()
+ {
+ KeySeq ks = new KeySeq ();
+ ks.keyseq.InsertRange (0, keyseq);
+ return ks;
+ }
+
+ public KeySeq () { }
+
+ public KeySeq (MPlist plist)
+ {
+ foreach (MPlist p in plist)
+ {
+ if (p.IsSymbol)
+ keyseq.Add (new Key (p.Symbol));
+ else if (p.IsInteger)
+ keyseq.Add (new Key ((char) p.Integer));
+ else if (p.IsPlist)
+ keyseq.Add (new Key (p.Plist));
+ else
+ throw new Exception ("Invalid Key Sequence: " + plist);
+ }
+ }
+
+ public KeySeq (MText mt) : base ()
+ {
+ for (int i = 0; i < mt.Length; i++)
+ keyseq.Add (new Key ((uint) mt[i]));
+ }
+
+ private static uint parse_integer (string str)
+ {
+ if (Char.IsDigit (str[0]))
+ {
+ if (str[0] == '0' && str.Length > 2 && str[1] == 'x')
+ {
+ uint i = 0;
+ for (int idx = 2; idx < str.Length; idx++)
+ {
+ uint c = str[idx];
+ if (c >= '0' && c <= '9')
+ i = i * 16 + (c - '0');
+ else if (c >= 'A' && c <= 'F')
+ i = i * 16 + 10 + (c - 'A');
+ else if (c >= 'a' && c <= 'f')
+ i = i * 16 + 10 + (c - 'a');
+ else
+ break;
+ }
+ return i;
+ }
+ return UInt32.Parse (str);
+ }
+ else if (str[0] == '?')
+ return str[1];
+ return 0;
+ }
+
+ public KeySeq (List<Xex.Term> list)
+ {
+ int len = list.Count;
+
+ for (int i = 0; i < len; i++)
+ {
+ if (list[i].IsInt)
+ keyseq.Add (new Key (list[i].Intval));
+ else if (list[i].IsStr)
+ keyseq.Add (new Key (list[i].Strval));
+ else if (list[i].IsSymbol)
+ keyseq.Add (new Key ((string) list[i].Symval));
+ else
+ throw new Exception ("Invalid key: " + list[i]);
+ }
+ }
+
+ public static Xex.TermValue parser (Xex.Domain domain, XmlNode node)
+ {
+ Xex.Term term = new Xex.Term (domain, node.FirstChild).Eval (domain);
+ return (term.IsStr ? new KeySeq ((MText) term.Strval)
+ : new KeySeq (term.Listval));
+ }
+
+ public override string ToString ()
+ {
+ string str;
+
+ foreach (Key key in keyseq)
+ if (key.HasModifier)
+ {
+ str = "(keyseq";
+ foreach (Key k in keyseq)
+ str += " " + k.ToString ();
+ return str + ")";
+ }
+ str = "\"";
+ foreach (Key key in keyseq)
+ str += key.ToString ();
+ return str + "\"";
+ }
+ }
+
+ public class Variable
{
public MSymbol name;
- private MSymbol[] keys;
- private MInputAction[] actions;
+ public MText description;
+ public Type type;
+ public object value;
+ public object[] candidates;
+
+ public Variable (MPlist p)
+ {
+ name = p.Symbol;
+ p = p.Next;
+ description = parse_description (p);
+ if (description == null)
+ description = new MText ("No description");
+ else
+ p = p.next;
+ type = (p.IsMText ? typeof (MText)
+ : p.IsInteger ? typeof (int)
+ : p.IsSymbol ? typeof (MSymbol)
+ : typeof (object));
+ value = p.val;
+ p = p.next;
+ candidates = new object[p.Count];
+ for (int i = 0; ! p.IsEmpty; i++, p = p.next)
+ candidates[i] = p.val;
+ }
+
+ private static Type parse_value (XmlNode node, out object value)
+ {
+ string typename = node.Attributes["type"].Value;
+ Type type;
+
+ if (typename == "integer")
+ {
+ int i;
+ if (! Int32.TryParse (node.InnerText, out i))
+ i = 0;
+ value = i;
+ type = typeof (int);
+ }
+ else if (typename == "string")
+ {
+ MText mt = node.InnerText;
+ value = mt;
+ type = typeof (MText);
+ }
+ else if (typename == "symbol")
+ {
+ MSymbol sym = node.InnerText;
+ value = sym;
+ type = typeof (MSymbol);
+ }
+ else
+ {
+ value = null;
+ type = typeof (object);
+ }
+ return type;
+ }
+
+ public Variable (XmlNode node)
+ {
+ name = node.Attributes["id"].Value;
+ for (node = node.FirstChild; node != null; node = node.NextSibling)
+ if (node.NodeType == XmlNodeType.Element)
+ {
+ if (node.Name == "description")
+ description = parse_description (node);
+ else if (node.Name == "value")
+ type = parse_value (node, out value);
+ else if (node.Name == "valiable-value-candidate")
+ {
+ XmlNodeList n_list = node.ChildNodes;
+ candidates = new object[n_list.Count];
+ for (int i = 0; i < n_list.Count; i++)
+ {
+ object val;
+ parse_value (n_list[i], out val);
+ candidates[i] = val;
+ }
+ }
+ }
+ }
+
+ public override string ToString ()
+ {
+ return ("(" + name + " \"" + (string) description
+ + "\" " + type + " " + value + " " + candidates + ")");
+ }
}
- private class MInputMethodBranch
+ public class Command
{
public MSymbol name;
- private MInputAction[] actions;
+ public MText description;
+ public List<KeySeq> keys;
+
+ public Command (MPlist p)
+ {
+ name = p.Symbol;
+ p = p.Next;
+ description = parse_description (p);
+ if (description == null)
+ description = "No description";
+ keys = new List<KeySeq> ();
+ Console.WriteLine ("cmd:" + p);
+ for (p = p.next; ! p.IsEmpty; p = p.next)
+ {
+ if (p.IsMText)
+ keys.Add (new KeySeq (p.Text));
+ else if (p.IsPlist)
+ keys.Add (new KeySeq (p.Plist));
+ }
+ }
+
+ public Command (XmlNode node)
+ {
+ name = node.Attributes[0].Value;
+ keys = new List<KeySeq> ();
+ for (node = node.FirstChild; node != null; node = node.NextSibling)
+ {
+ if (node.Name == "description")
+ description = parse_description (node);
+ else if (node.Name == "keyseq")
+ keys.Add ((KeySeq) KeySeq.parser (null, node));
+ }
+ }
+
+ public override string ToString ()
+ {
+ string str = "(" + name + " \"" + (string) description;
+ foreach (KeySeq keyseq in keys)
+ str += " " + keyseq;
+ return str + ")";
+ }
}
- private class MInputMethodState
+ internal class Plugin
+ {
+ private string name;
+ private Assembly assembly;
+ private Type plugin_type;
+
+ public Plugin (string name)
+ {
+ this.name = name;
+ }
+
+ public MethodInfo GetMethod (Xex.Symbol name)
+ {
+ if (assembly == null)
+ {
+ assembly = Assembly.LoadFrom (name + ".dll");
+ plugin_type = assembly.GetType ("M17n.MInputMethod.Plugin");
+ }
+
+ MethodInfo info = plugin_type.GetMethod ((string) name);
+ if (info == null)
+ throw new Exception ("Invalid plugin method: " + name);
+ return info;
+ }
+
+ public override string ToString ()
+ {
+ return String.Format ("(module {0}", name);
+ }
+ }
+
+ internal class PluginMethod : Xex.Function
+ {
+ private Plugin plugin;
+ private MethodInfo method_info;
+ object[] parameters = new object[2];
+
+ public PluginMethod (Plugin plugin, string name)
+ : base ((Xex.Symbol) name, 0, -1)
+ {
+ this.plugin = plugin;
+ }
+
+ public override Xex.Term Call (Xex.Domain domain, Xex.Variable vari,
+ Xex.Term[] args)
+ {
+ args = (Xex.Term[]) args.Clone ();
+ for (int i = 0; i < args.Length; i++)
+ {
+ args[i] = args[i].Eval (domain);
+ if (domain.Thrown)
+ return args[i];
+ }
+ if (method_info == null)
+ method_info = plugin.GetMethod (name);
+ parameters[0] = domain.context;
+ parameters[1] = args;
+ return (Xex.Term) method_info.Invoke (null, parameters);
+ }
+ }
+
+ internal abstract class Marker : Xex.TermValue
+ {
+ private MSymbol name;
+
+ public Marker (MSymbol name)
+ {
+ this.name = name;
+ }
+
+ public abstract int Position (MInputContext ic);
+ public abstract void Mark (MInputContext ic);
+
+ public static Xex.TermValue parser (Xex.Domain domain, XmlNode node)
+ {
+ MSymbol name = node.InnerText;
+
+ return Get ((MInputContext) domain.context, name);
+ }
+
+ public class Named : Marker
+ {
+ int pos;
+
+ public Named (MSymbol name) : this (name, 0) { }
+
+ private Named (MSymbol name, int p) : base (name) { pos = p; }
+
+ public override int Position (MInputContext ic) { return pos; }
+
+ public override void Mark (MInputContext ic) { pos = ic.cursor_pos; }
+
+ public override Xex.TermValue Clone ()
+ {
+ return new Named (name, pos);
+ }
+ }
+
+ public class Predefined : Marker
+ {
+ public Predefined (MSymbol name) : base (name) { }
+
+ public override int Position (MInputContext ic)
+ {
+ switch (name.Name[1]) {
+ case '<': return 0;
+ case '>': return ic.preedit.Length;
+ case '-': return ic.cursor_pos - 1;
+ case '+': return ic.cursor_pos + 1;
+ case '[':
+ if (ic.cursor_pos > 0)
+ {
+ int pos = ic.cursor_pos;
+ int to;
+ ic.preedit.FindProp (Mcandidates, pos - 1, out pos, out to);
+ return pos;
+ }
+ return 0;
+ case ']':
+ if (ic.cursor_pos < ic.preedit.Length - 1)
+ {
+ int pos = ic.cursor_pos;
+ int from;
+ ic.preedit.FindProp (Mcandidates, pos, out from, out pos);
+ return pos;
+ }
+ return ic.preedit.Length;
+ default:
+ return name.Name[1] - '0';
+ }
+ }
+
+ public override void Mark (MInputContext ic)
+ {
+ throw new Exception ("Can't set predefined marker: " + name);
+ }
+
+ public override Xex.TermValue Clone ()
+ {
+ return new Predefined (name);
+ }
+ }
+
+ static internal Dictionary<MSymbol,Predefined> predefined_markers;
+
+ static Marker ()
+ {
+ predefined_markers = new Dictionary<MSymbol,Predefined> ();
+ MSymbol[] symlist = new MSymbol[] {"@<", "@>", "@-", "@+", "@[", "@]",
+ "@0", "@1", "@2", "@3", "@4",
+ "@5", "@6", "@7", "@8", "@9" };
+ foreach (MSymbol s in symlist)
+ predefined_markers[s] = new Predefined (s);
+ }
+
+ public static Marker Get (MInputContext ic, MSymbol name)
+ {
+ Predefined pred;
+ Marker m;
+
+ if (predefined_markers.TryGetValue (name, out pred))
+ return pred;
+ if (name.Name[0] == '@')
+ throw new Exception ("Invalid marker name: " + name);
+ m = (Marker) ic.markers.Get (name);
+ if (m == null)
+ {
+ m = new Named (name);
+ ic.markers.Put (name, m);
+ }
+ return m;
+ }
+ }
+
+ internal class Candidates
+ {
+ private class Block
+ {
+ public int Index;
+ public object Data;
+
+ public Block (int index, Xex.Term term)
+ {
+ Index = index;
+ if (term.IsStr)
+ Data = (MText) term.Strval;
+ else
+ {
+ MPlist plist = new MPlist ();
+ MPlist p = plist;
+ foreach (Xex.Term t in term.Listval)
+ p = p.Add (MSymbol.mtext, (MText) t.Strval);
+ Data = plist;
+ }
+ }
+
+ public Block (int index, MPlist plist)
+ {
+ Index = index;
+ if (plist.IsMText)
+ Data = plist.Text;
+ else if (plist.IsPlist)
+ Data = plist.Plist;
+ else
+ throw new Exception ("Invalid candidate: " + plist);
+ }
+
+ public int Count
+ {
+ get { return (Data is MText
+ ? ((MText) Data).Length
+ : ((MPlist) Data).Count); }
+ }
+
+ public object this[int i]
+ {
+ get {
+ if (Data is MText) return ((MText) Data)[i];
+ return ((MPlist) Data)[i];
+ }
+ }
+ }
+
+ private Block[] blocks;
+ private int row = 0;
+ private int index = 0;
+ public object[] group;
+
+ private bool IsFixed { get { return group != null; } }
+ private int Total {
+ get {
+ Block last = blocks[blocks.Length - 1];
+ return last.Index + last.Count; }
+ }
+
+ public int Column {
+ get { return (IsFixed ? index % group.Length
+ : index - blocks[row].Index); }
+ }
+
+ public object Group {
+ get { return (IsFixed ? group : blocks[row].Data); }
+ }
+
+ public int GroupLength
+ {
+ get {
+ if (IsFixed)
+ {
+ int nitems = group.Length;
+ int start = index - (index % nitems);
+ int total = Total;
+ return (start + nitems <= total ? nitems : total - start);
+ }
+ return blocks[row].Count;
+ }
+ }
+
+ public object Current {
+ get {
+ return (IsFixed ? group[index % group.Length]
+ : blocks[row][index - blocks[row].Index]);
+ }
+ }
+
+ public Candidates (MPlist list, int column)
+ {
+ int nblocks = list.Count;
+
+ blocks = new Block[nblocks];
+ for (int i = 0, start = 0; i < nblocks; i++, list = list.next)
+ start += (blocks[i] = new Block (index, list)).Count;
+ if (column > 0)
+ group = new object[column];
+ }
+
+ public Candidates (List<Xex.Term> list, int column)
+ {
+ int nblocks = list.Count;
+
+ blocks = new Block[nblocks];
+ for (int i = 0, start = 0; i < nblocks; i++)
+ start += (blocks[i] = new Block (index, list[i])).Count;
+ if (column > 0)
+ group = new object[column];
+ }
+
+ public static void Detach (MInputContext ic)
+ {
+ ic.preedit.PopProp (0, ic.preedit.Length, Mcandidates);
+ ic.candidates = null;
+ ic.changed |= (ChangedStatus.Preedit | ChangedStatus.CursorPos
+ | CandidateAll);
+ }
+
+ // Fill the array "group" by candidates stating from INDEX.
+ // INDEX must be a multiple of "column". Set NTIMES to the
+ // number of valid candidates in "group". Update "block" if
+ // necessary. Return "group".
+
+ private int fill_group (int start)
+ {
+ int nitems = group.Length;
+ int r = row;
+ Block b = blocks[r];
+
+ if (start < b.Index)
+ while (start < b.Index)
+ b = blocks[--r];
+ else
+ while (start >= b.Index + b.Count)
+ b = blocks[++r];
+ row = r;
+
+ int count = b.Count;
+ start -= b.Index;
+ for (int i = 0; i < nitems; i++, start++)
+ {
+ if (start >= count)
+ {
+ r++;
+ if (r == blocks.Length)
+ return i;
+ b = blocks[r];
+ count = b.Count;
+ start = 0;
+ }
+ group[i] = b[start];
+ }
+ return nitems;
+ }
+
+ // Update "row" to what contains the first candidate of
+ // the previous candidate-group, update "current_index", and
+ // update "group" if necessary. Return the previous
+ // candidate-group. Set NITEMS to the number of valid
+ // candidates contained in that group.
+
+ public int PrevGroup ()
+ {
+ int nitems;
+ int col = Column;
+
+ if (IsFixed)
+ {
+ nitems = group.Length;
+ if ((index -= col + nitems) < 0)
+ index = (Total / nitems) * nitems;
+ nitems = fill_group (index);
+ }
+ else
+ {
+ row = row > 0 ? row-- : blocks.Length - 1;
+ nitems = blocks[row].Count;
+ index = blocks[row].Index;
+ }
+ index += col < nitems ? col : nitems - 1;
+ return nitems;
+ }
+
+ public int NextGroup ()
+ {
+ int nitems;
+ int col = Column;
+
+ if (IsFixed)
+ {
+ nitems = group.Length;
+ if ((index += nitems - col) >= Total)
+ index = 0;
+ nitems = fill_group (index);
+ }
+ else
+ {
+ row = row < blocks.Length - 1 ? row + 1 : 0;
+ nitems = blocks[row].Count;
+ index = blocks[row].Count;
+ }
+ index += col < nitems ? col : nitems - 1;
+ return nitems;
+ }
+
+ public void Prev ()
+ {
+ int col = Column;
+
+ if (col == 0)
+ {
+ int nitems = PrevGroup ();
+ index += col < nitems - 1 ? col : nitems - 1;
+ }
+ else
+ index--;
+ }
+
+ public void Next ()
+ {
+ int col = Column;
+ int nitems = GroupLength;
+
+ if (col == nitems - 1)
+ {
+ nitems = NextGroup ();
+ index -= Column;
+ }
+ else
+ index++;
+ }
+
+ public void First ()
+ {
+ index -= Column;
+ }
+
+ public void Last ()
+ {
+ index += GroupLength - (Column + 1);
+ }
+
+ public void Select (int col)
+ {
+ int maxcol = GroupLength - 1;
+ if (col > maxcol)
+ col = maxcol;
+ index = index - Column + col;
+ }
+ }
+
+ internal abstract class Selector : Xex.TermValue
+ {
+ private Selector () { }
+
+ public abstract void Select (Candidates candidates);
+
+ public static Xex.TermValue parser (Xex.Domain domain, XmlNode node)
+ {
+ MSymbol name = node.InnerText;
+ Predefined pred;
+
+ if (predefined_selectors.TryGetValue (name, out pred))
+ return pred;
+ if (name.Name[0] == '@')
+ throw new Exception ("Invalid selector name: " + name);
+ int index;
+ if (! Int32.TryParse (node.InnerText, out index))
+ throw new Exception ("Invalid selector name: " + name);
+ return new Numbered (index);
+ }
+
+ public override Xex.TermValue Clone () { return this; }
+
+ public class Numbered : Selector
+ {
+ int index;
+
+ public Numbered (int index) { this.index = index; }
+
+ public override void Select (Candidates can) { can.Select (index); }
+ }
+
+ public class Predefined : Selector
+ {
+ private char tag;
+
+ internal Predefined (MSymbol sym) { this.tag = sym.Name[1]; }
+
+ public override void Select (Candidates can)
+ {
+ switch (tag)
+ {
+ case '<': candidates.First (); break;
+ case '>': candidates.Last (); break;
+ case '-': candidates.Prev (); break;
+ case '+': candidates.Next (); break;
+ case '[': candidates.PrevGroup (); break;
+ case ']': candidates.NextGroup (); break;
+ default: break;
+ }
+ }
+ }
+
+ static new Dictionary<MSymbol, Predefined> predefined_selectors;
+
+ static Selector ()
+ {
+ predefined_selectors = new Dictionary<MSymbol, Predefined> ();
+ MSymbol[] symlist = new MSymbol[] { "@<", "@=", "@>", "@-", "@+",
+ "@[", "@]" };
+ foreach (MSymbol s in symlist)
+ predefined_selectors[s] = new Predefined (s);
+ }
+ }
+
+ internal class Map
{
- public MText title;
public MSymbol name;
- public MInputMethodBranch[] branches;
+ public Dictionary<Key, Map> submaps;
+ public Xex.Term actions;
+
+ public void Add (KeySeq keys, int index, Xex.Term actions)
+ {
+ Map sub = null;
+
+ if (submaps == null)
+ submaps = new Dictionary<Key, Map> ();
+ else
+ submaps.TryGetValue (keys.keyseq[index], out sub);
+ if (sub == null)
+ {
+ Key key = keys.keyseq[index];
+ submaps[key] = sub = new Map ();
+ }
+ if (index + 1 < keys.keyseq.Count)
+ sub.Add (keys, index + 1, actions);
+ else
+ this.actions = actions;
+ }
+
+ public Xex.Term Lookup (KeySeq keys, int index)
+ {
+ Map sub;
+
+ if (index + 1 == keys.keyseq.Count)
+ return actions;
+ if (submaps.TryGetValue (keys.keyseq[index], out sub))
+ return sub.Lookup (keys, index + 1);
+ return Tnil;
+ }
+
+ private void describe (MText mt, KeySeq keyseq)
+ {
+ if (keyseq.keyseq.Count > 0)
+ {
+ mt.Cat (" (").Cat (keyseq.ToString ());
+ mt.Cat (' ').Cat (actions.ToString ());
+ mt.Cat (')');
+ }
+ if (submaps != null)
+ foreach (KeyValuePair<Key, Map> kv in submaps)
+ {
+ keyseq.keyseq.Add (kv.Key);
+ kv.Value.describe (mt, keyseq);
+ keyseq.keyseq.RemoveAt (keyseq.keyseq.Count - 1);
+ }
+ }
+
+ public override string ToString ()
+ {
+ MText mt = "(" + name.Name;
+ KeySeq keyseq = new KeySeq ();
+
+ describe (mt, keyseq);
+ mt.Cat (')');
+ return (string) mt;
+ }
}
- public readonly MSymbol language;
- public readonly MSymbol name;
- public readonly MSymbol subname;
+ internal class State
+ {
+ public MSymbol name;
+ public MText title;
+ public MPlist branches = new MPlist ();
+
+ public State (MSymbol name)
+ {
+ this.name = name;
+ }
+ public override string ToString ()
+ {
+ MText mt = "(" + name.Name;
+
+ if (title != null)
+ mt.Cat (" \"" + title + "\"");
+ for (MPlist p = branches; ! p.IsEmpty; p = p.next)
+ mt.Cat (" (" + p.Key + " " + (Xex) p.Val + ")");
+ return (string) mt + ")";
+ }
+ }
+
+ // Instance members
+ internal Xex.Domain domain = new Xex.Domain (im_domain, null);
+
+ private LoadStatus load_status = LoadStatus.None;
+ private MDatabase.Tag tag;
private MDatabase mdb;
+
private MText description;
- private MText title;
- private MPlist commands;
- private MPlist variables;
- private MPlist maps;
- private MPlist states;
- private MPlist macros;
- private MPlist externals;
+ internal MText title;
+ internal Command[] commands;
+ internal Xex.Symbol[] var_names;
+ internal Dictionary<MSymbol, Plugin> plugins;
+ internal Dictionary<MSymbol, Map> maps;
+ internal MPlist states;
+
+ static MInputMethod ()
+ {
+ im_domain.DefTerm ("keyseq", KeySeq.parser);
+ im_domain.DefTerm ("marker", Marker.parser);
+ im_domain.DefTerm ("selector", Selector.parser);
+
+ im_domain.DefSubr (Finsert, "insert", true, 1, 1);
+ im_domain.DefSubr (Finsert_candidates, "candidates", true, 1, -1);
+ im_domain.DefSubr (Fdelete, "delete", true, 1, 1);
+ im_domain.DefSubr (Fselect, "select", true, 1, 1);
+ im_domain.DefSubr (Fshow, "show", true, 0, 0);
+ im_domain.DefSubr (Fhide, "hide", true, 0, 0);
+ im_domain.DefSubr (Fmove, "move", true, 1, 1);
+ im_domain.DefSubr (Fmark, "mark", true, 1, 1);
+ im_domain.DefSubr (Fpushback, "pushback", true, 1, 1);
+ im_domain.DefSubr (Fpop, "pop", true, 0, 0);
+ im_domain.DefSubr (Fundo, "undo", true, 0, 1);
+ im_domain.DefSubr (Fcommit, "commit", true, 0, 0);
+ im_domain.DefSubr (Funhandle, "unhandle", true, 0, 0);
+ im_domain.DefSubr (Fshift, "shift", true, 1, 1);
+ im_domain.DefSubr (Fmarker, "marker", true, 1, 1);
+ im_domain.DefSubr (Fchar_at, "char-at", true, 1, 1);
+
+ MDatabase.Tag tag = new MDatabase.Tag (Minput_method, "*", "*", "*");
+ List<MDatabase> list = MDatabase.List (tag);
+ M17n.DebugPrint ("Found {0} input methods\n", list.Count);
+ foreach (MDatabase mdb in list)
+ im_table[mdb.tag] = new MInputMethod (mdb.tag);
+ }
- public MInputMethod (MSymbol language, MSymbol name, MSymbol extra)
+ // Constructor
+ private MInputMethod (MDatabase.Tag tag)
{
- MDatabase.Tag tag = new MDatabase.Tag (language, name, extra);
+ this.tag = tag;
+ }
+
+ // Instance Properties
+ public MSymbol Language { get { return tag[1]; } }
+ public MSymbol Name { get { return tag[2]; } }
+ public MSymbol SubName { get { return tag[3]; } }
+ public bool Info (out MText description,
+ out MText title,
+ out Xex.Variable[] variables,
+ out Command[] commands)
+ {
+ if ((load_status & LoadStatus.Header) != LoadStatus.Header
+ && ! load_header ())
+ {
+ description = null;
+ title = null;
+ variables = null;
+ commands = null;
+ return false;
+ }
+ description = this.description;
+ title = this.title;
+ if (var_names == null)
+ variables = null;
+ else
+ {
+ variables = new Xex.Variable[var_names.Length];
+ int i = 0;
+ foreach (Xex.Symbol name in var_names)
+ variables[i++] = domain.GetVar (name, false);
+ }
+ commands = this.commands;
+ return true;
+ }
+
+ public static MInputMethod Find (MSymbol language, MSymbol name)
+ {
+ return Find (language, name, MSymbol.nil);
+ }
+
+ public static MInputMethod Find (MSymbol language, MSymbol name,
+ MSymbol subname)
+ {
+ MDatabase.Tag tag = new MDatabase.Tag (Minput_method, language,
+ name, subname);
+ MInputMethod im;
+
+ return (im_table.TryGetValue (tag, out im) ? im : null);
+ }
+
+ public bool Open ()
+ {
+ return ((load_status == LoadStatus.Full) || load_body ());
+ }
+
+ public static MInputMethod[] List ()
+ {
+ MInputMethod[] array = new MInputMethod[im_table.Count];
+ int i = 0;
+
+ foreach (KeyValuePair<MDatabase.Tag, MInputMethod> kv in im_table)
+ array[i++] = kv.Value;
+ return array;
+ }
+
+ private bool load_header ()
+ {
+ mdb = MDatabase.Find (tag);
+ if (mdb == null)
+ return false;
+ mdb.name_table = Xex.Symbol.Table;
+ try {
+ MSymbol format = mdb.Format;
+
+ if (format == MSymbol.plist)
+ load ((MPlist) mdb.Load (Mmap), false);
+ else
+ {
+ XmlDocument doc = (XmlDocument) mdb.Load (Mmap_list);
+ load (doc.DocumentElement, false);
+ }
+ } catch (Exception e) {
+ Console.WriteLine ("{0}\n", e);
+ load_status = LoadStatus.Error;
+ return false;
+ }
+ load_status |= LoadStatus.Header;
+ return true;
+ }
+
+ private bool load_body ()
+ {
mdb = MDatabase.Find (tag);
if (mdb == null)
- throw new Exception (String.Format ("Input method {0} not available",
- tag));
- MPlist plist = (MPlist) mdb.Load ();
+ return false;
+ mdb.name_table = Xex.Symbol.Table;
+ try {
+ object obj = mdb.Load ();
+ if (obj is MPlist)
+ load ((MPlist) obj, true);
+ else
+ load ((XmlDocument) obj, true);
+ } catch (Exception e) {
+ Console.WriteLine (e);
+ load_status = LoadStatus.Error;
+ return false;
+ }
+ load_status = LoadStatus.Full;
+ return true;
+ }
+
+ private void load (MPlist plist, bool full)
+ {
+ maps = new Dictionary<MSymbol, Map> ();
+ states = new MPlist ();
+
+ for (; ! plist.IsEmpty; plist = plist.next)
+ if (plist.IsPlist)
+ {
+ MPlist pl = plist.Plist;
+ if (pl.IsSymbol)
+ {
+ MSymbol sym = pl.Symbol;
+
+ pl = pl.next;
+ if (sym == Mdescription)
+ description = parse_description (pl);
+ else if (sym == Mtitle)
+ {
+ if (pl.IsMText)
+ title = pl.Text;
+ }
+ else if (sym == Mvariable)
+ parse_variables (pl);
+ else if (sym == Mcommand)
+ parse_commands (pl);
+ else if (full)
+ {
+ if (sym == Mmodule)
+ parse_plugins (pl);
+ else if (sym == Minclude)
+ parse_include (pl);
+ else if (sym == Mmacro)
+ parse_macros (pl);
+ else if (sym == Mmap)
+ parse_maps (pl);
+ else if (sym == Mstate)
+ parse_states (pl);
+ }
+ }
+ }
+ if (description == null)
+ description = (MText) "No description";
+ if (title == null)
+ title = new MText (tag[2].Name);
+ if (commands == null)
+ commands = new Command[0];
+ if (! full)
+ return;
+ if (states.IsEmpty)
+ {
+ State state = new State ((MSymbol) "init");
+ plist = new MPlist ();
+ foreach (KeyValuePair<MSymbol, Map>kv in maps)
+ state.branches.Add (kv.Key, null);
+ states.Add (state.name, state);
+ }
+ }
+
+ private void load (XmlNode node, bool full)
+ {
+ bool skip_header = load_status == LoadStatus.Header;
+
+ maps = new Dictionary<MSymbol, Map> ();
+ states = new MPlist ();
+
+ if (node.NodeType == XmlNodeType.Document)
+ node = node.FirstChild;
+ while (node.NodeType != XmlNodeType.Element)
+ node = node.NextSibling;
+ for (node = node.FirstChild; node != null; node = node.NextSibling)
+ {
+ if (node.NodeType != XmlNodeType.Element)
+ continue;
+ if (! skip_header)
+ {
+ if (node.Name == "description")
+ description = parse_description (node);
+ else if (node.Name == "title")
+ title = parse_title (node);
+ else if (node.Name == "variable-list")
+ parse_variables (node);
+ else if (node.Name == "command-list")
+ parse_commands (node);
+ }
+ else if (full)
+ {
+ if (node.Name == "module-list")
+ parse_plugins (node);
+ else if (node.Name == "macro-list")
+ parse_macros (node);
+ else if (node.Name == "map-list")
+ parse_maps (node);
+ else if (node.Name == "state-list")
+ parse_states (node);
+ }
+ }
+ if (description == null)
+ description = (MText) "No description";
+ if (title == null)
+ title = new MText (tag[2].Name);
+ if (commands == null)
+ commands = new Command[0];
+ if (! full)
+ return;
+ if (states.IsEmpty)
+ {
+ State state = new State ((MSymbol) "init");
+ foreach (KeyValuePair<MSymbol, Map>kv in maps)
+ state.branches.Add (kv.Key, null);
+ states.Add (state.name, state);
+ }
+ }
+
+ private static void transform (MPlist plist)
+ {
+ for (; ! plist.IsEmpty; plist = plist.next)
+ {
+ if (plist.IsMText)
+ {
+ MPlist p = new MPlist ();
+ p.Add (MSymbol.symbol, Minsert);
+ p.Add (MSymbol.mtext, plist.Text);
+ plist.Set (MSymbol.plist, p);
+ }
+ else if (plist.IsInteger)
+ {
+ MPlist p = new MPlist ();
+ p.Add (MSymbol.symbol, Minsert);
+ p.Add (MSymbol.integer, plist.Integer);
+ plist.Set (MSymbol.plist, p);
+ }
+ else if (plist.IsPlist)
+ {
+ MPlist pl = plist.Plist;
+
+ if (pl.IsSymbol)
+ {
+ if (pl.Symbol == Madd)
+ pl.Set (MSymbol.symbol, (MSymbol) "+=");
+ else if (pl.Symbol == Msub)
+ pl.Set (MSymbol.symbol, (MSymbol) "-=");
+ else if (pl.Symbol == Mmul)
+ pl.Set (MSymbol.symbol, (MSymbol) "*=");
+ else if (pl.Symbol == Mdiv)
+ pl.Set (MSymbol.symbol, (MSymbol) "/=");
+ else if (pl.Symbol == Minsert)
+ {
+ // (insert (CANDIDATES ...))
+ // => (candidates CANDIDATES ...)
+ if (pl.next.IsPlist)
+ {
+ pl.Set (MSymbol.symbol, Mcandidates);
+ pl = pl.next;
+ MPlist p = pl.Plist;
+ pl.Set (p.key, p.val);
+ for (p = p.next; ! p.IsEmpty; p = p.next);
+ pl.Add (p.key, p.val);
+ }
+ }
+ else if (pl.Symbol == Mif)
+ {
+ pl = pl.next;
+ if (! pl.IsEmpty)
+ transform (pl.next);
+ }
+ else if (pl.Symbol == Mcond)
+ {
+ for (pl = pl.next; ! pl.IsEmpty; pl = pl.next)
+ if (pl.IsPlist)
+ {
+ MPlist p = pl.Plist;
+
+ if (p.IsPlist)
+ transform (p);
+ else
+ transform (p.next);
+ }
+ }
+ else if (pl.Symbol == Mdelete
+ || pl.Symbol == Mmove
+ || pl.Symbol == Mmark)
+ {
+ pl = pl.next;
+ if (pl.IsSymbol)
+ {
+ MSymbol sym = pl.Symbol;
+ MPlist p = new MPlist ();
+ p.Add (MSymbol.symbol, Mmarker);
+ p.Add (MSymbol.symbol, sym);
+ pl.Set (MSymbol.plist, p);
+ }
+ }
+ else if (pl.Symbol == Mpushback)
+ {
+ pl = pl.next;
+ if (pl.IsPlist)
+ pl.Plist.Push (MSymbol.symbol, Mkeyseq);
+ }
+ }
+ else if (pl.IsMText)
+ {
+ // (CANDIDATES ...) => (candidates CANDIDATES ...)
+ pl.Push (MSymbol.symbol, Mcandidates);
+ }
+ }
+ else if (plist.IsSymbol)
+ {
+ MSymbol sym = plist.Symbol;
+
+ if (sym.Name.Length >= 3
+ && sym.Name[0] == '@'
+ && (sym.Name[1] == '-' || sym.Name[1] == '+'))
+ {
+ int pos = int.Parse (sym.Name.Substring (1));
+ MPlist p = new MPlist ();
+
+ if (pos == 0)
+ {
+ p.Add (MSymbol.symbol, Msurrounding_text_p);
+ }
+ else
+ {
+ if (sym.Name[1] == '+')
+ pos--;
+ p.Add (MSymbol.symbol, Mchar_at);
+ p.Add (MSymbol.integer, pos);
+ }
+ plist.Set (MSymbol.plist, p);
+ }
+ }
+ }
+ }
+
+ private static MText parse_description (MPlist plist)
+ {
+ if (plist.IsMText)
+ return plist.Text;
+ if (plist.IsPlist)
+ {
+ plist = plist.Plist;
+ if (plist.IsSymbol && plist.Symbol == (MSymbol) "_"
+ && plist.next.IsMText)
+ return plist.next.Text;
+ }
+ return null;
+ }
+
+ private static MText parse_description (XmlNode node)
+ {
+ if (node.HasChildNodes)
+ node = node.FirstChild;
+ return node.InnerText;
+ }
+
+ private static MText parse_title (XmlNode node)
+ {
+ return node.InnerText;
+ }
+
+ private void new_variable (Xex.Symbol name, string desc, int val,
+ MPlist pl, Xex.Variable vari)
+ {
+ int[] range;
+
+ if (pl.IsEmpty)
+ range = null;
+ else
+ {
+ range = new int[pl.Count * 2];
+ for (int i = 0; i < range.Length; i++)
+ {
+ if (pl.IsPlist)
+ {
+ MPlist p = pl.Plist;
+
+ if (! p.IsInteger || ! p.next.IsInteger)
+ throw new Exception ("Invalid range: " + p);
+ range[i * 2] = p.Integer;
+ range[i * 2 + 1] = p.next.Integer;
+ }
+ else if (pl.IsInteger)
+ range[i * 2] = range[i * 2 + 1] = pl.Integer;
+ else
+ throw new Exception ("Invalid range: " + pl);
+ }
+ }
+ if (vari == null)
+ domain.Defvar (new Xex.Variable.Int (name, desc, val, range));
+ else
+ {
+ Xex.Term term = new Xex.Term (val);
+ vari.Value = term;
+ vari.DefaultValue = term;
+ vari.Range = range;
+ }
+ }
+
+ private void new_variable (Xex.Symbol name, string desc, MText val,
+ MPlist pl, Xex.Variable vari)
+ {
+ string[] range;
+
+ if (pl.IsEmpty)
+ range = null;
+ else
+ {
+ range = new string[pl.Count * 2];
+ for (int i = 0; i < range.Length; i++)
+ {
+ if (pl.IsMText)
+ range[i] = (string) pl.Text;
+ else
+ throw new Exception ("Invalid range: " + pl);
+ }
+ }
+ if (vari == null)
+ domain.Defvar (new Xex.Variable.Str (name, desc, (string) val, range));
+ else
+ {
+ Xex.Term term = new Xex.Term ((string) val);
+ vari.Value = term;
+ vari.DefaultValue = term;
+ vari.Range = range;
+ }
+ }
+
+ private void new_variable (Xex.Symbol name, string desc, MSymbol val,
+ MPlist pl, Xex.Variable vari)
+ {
+ Xex.Symbol[] range;
+ Xex.Symbol sym = val.Name;
+
+ if (pl.IsEmpty)
+ range = null;
+ else
+ {
+ range = new Xex.Symbol[pl.Count * 2];
+ for (int i = 0; i < range.Length; i++)
+ {
+ if (pl.IsSymbol)
+ range[i] = pl.Symbol.Name;
+ else
+ throw new Exception ("Invalid range: " + pl);
+ }
+ }
+ if (vari == null)
+ domain.Defvar (new Xex.Variable.Sym (name, desc, sym, range));
+ else
+ {
+ Xex.Term term = new Xex.Term (sym);
+ vari.Value = term;
+ vari.DefaultValue = term;
+ vari.Range = range;
+ }
+ }
+
+ private Xex.Variable get_global_var (Xex.Symbol name)
+ {
+ if (im_global == null || this != im_global)
+ {
+ tag = new MDatabase.Tag (Minput_method, MSymbol.t, MSymbol.nil,
+ "global");
+ im_global = im_table[tag];
+ if (! im_global.Open ())
+ throw new Exception ("Failed to load global");
+ }
+ return im_global.domain.GetVar (name, false);
+ }
+
+ private void parse_variables (MPlist plist)
+ {
+ var_names = new Xex.Symbol[plist.Count];
+
+ for (int i = 0; ! plist.IsEmpty; i++, plist = plist.next)
+ {
+ if (! plist.IsPlist || ! plist.Plist.IsSymbol)
+ throw new Exception ("Invalid variable: " + plist);
+
+ MPlist p = plist.Plist;
+ Xex.Symbol name = (Xex.Symbol) p.Symbol.Name;
+ var_names[i] = name;
+ p = p.next;
+ string desc = (string) parse_description (p);
+ Xex.Variable vari = get_global_var (name);
+ if (vari != null)
+ domain.Defvar (vari);
+ if (desc != null)
+ p = p.next;
+ if (! p.IsEmpty)
+ {
+ if (p.IsInteger)
+ new_variable (name, desc, p.Integer, p.next, vari);
+ else if (p.IsMText)
+ new_variable (name, desc, p.Text, p.next, vari);
+ else if (p.IsSymbol)
+ new_variable (name, desc, p.Symbol, p.next, vari);
+ else
+ throw new Exception ("Invalid variable type: " + p.val);
+ }
+ }
+ }
+
+ private void parse_variables (XmlNode node)
+ {
+ XmlNodeList node_list = node.ChildNodes;
+
+ var_names = new Xex.Symbol[node_list.Count];
+ for (int i = 0; i < node_list.Count; i++)
+ {
+ Xex.Symbol name = node_list[i].Attributes[0].Value;
+ Xex.Variable vari = get_global_var (name);
+ if (vari != null)
+ domain.Defvar (vari);
+ domain.Defvar (node_list[i]);
+ var_names[i] = name;
+ }
+ }
+
+ private void parse_commands (MPlist plist)
+ {
+ commands = new Command[plist.Count];
+
+ for (int i = 0; ! plist.IsEmpty; plist = plist.next)
+ if (plist.IsPlist && plist.Plist.IsSymbol)
+ commands[i++] = new Command (plist.Plist);
+ }
+
+ private void parse_commands (XmlNode node)
+ {
+ XmlNodeList node_list = node.ChildNodes;
+
+ commands = new Command[node_list.Count];
+ for (int i = 0; i < node_list.Count; i++)
+ {
+ if (node_list[i].NodeType == XmlNodeType.Element)
+ commands[i] = new Command (node_list[i]);
+ }
+ }
+
+ private void parse_plugins (MPlist plist)
+ {
+ plugins = new Dictionary<MSymbol, Plugin> ();
+
+ for (; ! plist.IsEmpty; plist = plist.Next)
+ {
+ MPlist p = plist.Plist;
+ MSymbol sym = p.Symbol;
+ Plugin plugin = new Plugin (sym.Name);
+
+ for (p = p.next; ! p.IsEmpty; p = p.next)
+ {
+ Xex.Function func = new PluginMethod (plugin, p.Symbol.Name);
+ domain.Defun (func);
+ }
+ }
+ }
+
+ private void parse_plugins (XmlNode node)
+ {
+ plugins = new Dictionary<MSymbol, Plugin> ();
+
+ foreach (XmlNode n in node.ChildNodes)
+ {
+ Plugin plugin = new Plugin (n.Attributes[0].Value);
+ foreach (XmlNode nn in n.ChildNodes)
+ {
+ Xex.Function func = new PluginMethod (plugin,
+ nn.Attributes[0].Value);
+ domain.Defun (func);
+ }
+ }
+ }
+
+ private void parse_macros (XmlNode node)
+ {
+ for (XmlNode nn = node.FirstChild; nn != null; nn = nn.NextSibling)
+ if (nn.NodeType == XmlNodeType.Element)
+ domain.Defun (nn, true);
+ for (XmlNode nn = node.FirstChild; nn != null; nn = nn.NextSibling)
+ if (nn.NodeType == XmlNodeType.Element)
+ domain.Defun (nn, false);
+ }
+
+ private void parse_maps (XmlNode node)
+ {
+ }
+
+ private void parse_states (XmlNode node)
+ {
+ }
+
+ private void parse_include (MPlist plist)
+ {
+ if (! plist.IsPlist)
+ return;
+ MPlist p = plist.Plist;
+ MSymbol language, name, subname;
+ language = p.Symbol;
+ p = p.next;
+ if (! p.IsSymbol)
+ name = subname = MSymbol.nil;
+ else
+ {
+ name = p.Symbol;
+ p = p.next;
+ if (! p.IsSymbol)
+ subname = MSymbol.nil;
+ else
+ subname = p.Symbol;
+ }
+
+ MInputMethod im = MInputMethod.Find (language, name, subname);
+ if (im == null)
+ return;
+ if (! im.Open ())
+ return;
+ plist = plist.next;
+ if (! plist.IsSymbol)
+ return;
+ MSymbol target_type = plist.Symbol;
+ plist = plist.next;
+ MSymbol target_name = MSymbol.nil;
+ if (plist.IsSymbol)
+ target_name = plist.Symbol;
+ if (target_type == Mmacro)
+ {
+ if (target_name == MSymbol.nil)
+ im.domain.CopyFunc (domain);
+ else
+ im.domain.CopyFunc (domain, (Xex.Symbol) target_name.Name);
+ }
+ else if (target_type == Mmap)
+ {
+ if (target_name == MSymbol.nil)
+ {
+ foreach (KeyValuePair<MSymbol, Map> kv in im.maps)
+ maps[kv.Key] = kv.Value;
+ }
+ else
+ {
+ Map map;
+ if (im.maps.TryGetValue (target_name, out map))
+ maps[target_name] = map;
+ }
+ }
+ else if (target_type == Mstate)
+ {
+ if (target_name == MSymbol.nil)
+ {
+ for (p = im.states; ! p.IsEmpty; p = p.next)
+ states.Add (p.key, p.val);
+ }
+ else
+ {
+ object state = im.states.Get (target_name);
+ if (state != null)
+ states.Add (target_name, state);
+ }
+ }
+ }
+
+ private Xex.Term parse_cond (MPlist plist)
+ {
+ Xex.Term[] args = new Xex.Term[plist.Count];
+
+ for (int i = 0; ! plist.IsEmpty; i++, plist = plist.next)
+ {
+ if (! plist.IsPlist)
+ throw new Exception ("Invalid cond args: " + plist);
+ MPlist p = plist.Plist;
+ List<Xex.Term> arg = new List<Xex.Term> (parse_action (p));
+ args[i] = new Xex.Term (arg);
+ }
+ return new Xex.Term (domain, (Xex.Symbol) Mcond.Name, args);
+ }
+
+ private Xex.Term[] parse_action (MPlist plist)
+ {
+ Xex.Term[] terms = new Xex.Term[plist.Count];
+
+ for (int i = 0; ! plist.IsEmpty; i++, plist = plist.next)
+ {
+ if (plist.IsSymbol)
+ terms[i] = new Xex.Term ((Xex.Symbol) plist.Symbol.Name);
+ else if (plist.IsMText)
+ terms[i] = new Xex.Term ((string) plist.Text);
+ else if (plist.IsInteger)
+ terms[i] = new Xex.Term (plist.Integer);
+ else if (plist.IsPlist)
+ {
+ MPlist p = plist.Plist;
+ if (! p.IsSymbol)
+ throw new Exception ("Invalid action: " + p);
+ MSymbol name = p.Symbol;
+ p = p.next;
+ if (name == Mcond)
+ terms[i] = parse_cond (p);
+ else if (name == Mset || name == Madd || name == Msub
+ || name == Mmul || name == Mdiv)
+ {
+ if (! p.IsSymbol)
+ throw new Exception ("Invalid action: " + p);
+ Xex.Symbol varname = p.Symbol.Name;
+ terms[i] = new Xex.Term (domain, (Xex.Symbol) name.Name,
+ varname, parse_action (p.next));
+ }
+ else
+ terms[i] = new Xex.Term (domain, (Xex.Symbol) name.Name,
+ parse_action (p));
+ }
+ else
+ throw new Exception ("Invalid action: " + plist);
+ }
+ return terms;
+ }
+
+
+ private void parse_macros (MPlist plist)
+ {
+ for (MPlist pl = plist; ! pl.IsEmpty; pl = pl.next)
+ if (pl.IsPlist)
+ {
+ MPlist p = pl.Plist;
+
+ if (! p.IsSymbol)
+ continue;
+ domain.Defun ((Xex.Symbol) p.Symbol.Name, false, null, null, true);
+ }
+ for (MPlist pl = plist; ! pl.IsEmpty; pl = pl.next)
+ if (pl.IsPlist)
+ {
+ MPlist p = pl.Plist;
+
+ if (! p.IsSymbol)
+ continue;
+ transform (p.next);
+ domain.Defun ((Xex.Symbol) p.Symbol.Name, false, null,
+ parse_action (p.next), false);
+ }
+ }
+
+ private void parse_maps (MPlist plist)
+ {
+ for (; ! plist.IsEmpty; plist = plist.next)
+ if (plist.IsPlist)
+ {
+ MPlist pl = plist.Plist;
+
+ if (! pl.IsSymbol)
+ continue;
+ Map map = new Map ();
+ map.name = pl.Symbol;
+ maps[map.name] = map;
+ for (pl = pl.next; ! pl.IsEmpty; pl = pl.next)
+ {
+ if (! pl.IsPlist)
+ continue;
+ MPlist p = pl.Plist;
+ KeySeq keys;
+ if (p.IsMText)
+ keys = new KeySeq (p.Text);
+ else if (p.IsPlist)
+ keys = new KeySeq (p.Plist);
+ else
+ continue;
+ p = p.next;
+ if (p.IsEmpty)
+ continue;
+ map.Add (keys, 0,
+ new Xex.Term (domain, Nprogn, parse_action (p)));
+ }
+ }
+ }
+
+ private void parse_states (MPlist plist)
+ {
+ for (; ! plist.IsEmpty; plist = plist.next)
+ if (plist.IsPlist)
+ {
+ MPlist pl = plist.Plist;
+ MText title = null;
+
+ if (pl.IsMText)
+ {
+ title = pl.Text;
+ pl = pl.next;
+ }
+ if (! pl.IsSymbol)
+ continue;
+
+ State state = new State (pl.Symbol);
+ state.title = title;
+ if (states == null)
+ states = new MPlist ();
+ states.Add (state.name, state);
+ for (pl = pl.next; ! pl.IsEmpty; pl = pl.next)
+ {
+ if (! pl.IsPlist)
+ continue;
+ MPlist p = pl.Plist;
+ if (! p.IsSymbol)
+ continue;
+ MSymbol map_name = p.Symbol;
+ p = p.next;
+ Xex.Term term = new Xex.Term (domain, Nprogn, parse_action (p));
+ state.branches.Add (map_name, term);
+ }
+ }
+ }
+
+ private static Xex.Term Finsert (Xex.Domain domain, Xex.Variable vari,
+ Xex.Term[] args)
+ {
+ ((MInputContext) domain.context).insert (args[0]);
+ return args[0];
+ }
+
+ private static Xex.Term Finsert_candidates (Xex.Domain domain,
+ Xex.Variable vari,
+ Xex.Term[] args)
+ {
+ ((MInputContext) domain.context).insert_candidates (args[0]);
+ return args[0];
+ }
+
+ private static Xex.Term Fmarker (Xex.Domain domain, Xex.Variable vari,
+ Xex.Term[] args)
+ {
+ MSymbol name = (string) args[0].Symval;
+ return new Xex.Term (Marker.Get ((MInputContext) domain.context, name));
+ }
+
+ private static Xex.Term Fchar_at (Xex.Domain domain, Xex.Variable vari,
+ Xex.Term[] args)
+ {
+ int c = ((MInputContext) domain.context).char_at (args[0].Intval);
+ return new Xex.Term (c);
+ }
+
+ private static Xex.Term Fdelete (Xex.Domain domain, Xex.Variable vari,
+ Xex.Term[] args)
+ {
+ ((MInputContext) domain.context).delete ((int) args[0].Intval);
+ return args[0];
+ }
+
+ private static Xex.Term Fselect (Xex.Domain domain, Xex.Variable vari,
+ Xex.Term[] args)
+ {
+ Candidates can = ((MInputContext) domain.context).candidates;
+
+ if (can != null)
+ ((Selector) args[0].Objval).Select (can);
+ return args[0];
+ }
+
+ private static Xex.Term Fshow (Xex.Domain domain, Xex.Variable vari,
+ Xex.Term[] args)
+ {
+ ((MInputContext) domain.context).show ();
+ return Tnil;
+ }
+
+ private static Xex.Term Fhide (Xex.Domain domain, Xex.Variable vari,
+ Xex.Term[] args)
+ {
+ ((MInputContext) domain.context).hide ();
+ return Tnil;
+ }
+
+ private static Xex.Term Fmove (Xex.Domain domain, Xex.Variable vari,
+ Xex.Term[] args)
+ {
+ if (args[0].IsInt)
+ ((MInputContext) domain.context).move (args[0].Intval);
+ else
+ {
+ Marker m = (Marker) args[0].Objval;
+ MInputContext ic = (MInputContext) domain.context;
+ ((MInputContext) domain.context).move (m.Position (ic));
+ }
+ return args[0];
+ }
+
+ private static Xex.Term Fmark (Xex.Domain domain, Xex.Variable vari,
+ Xex.Term[] args)
+ {
+ Marker m = (Marker) args[0].Objval;
+ m.Mark ((MInputContext) domain.context);
+ return args[0];
+ }
+
+ private static Xex.Term Fpushback (Xex.Domain domain, Xex.Variable vari,
+ Xex.Term[] args)
+ {
+ MInputContext ic = (MInputContext) domain.context;
+
+ if (args[0].IsInt)
+ ic.pushback (args[0].Intval);
+ else if (args[0].IsStr)
+ ic.pushback (new KeySeq (args[0].Strval));
+ else
+ ic.pushback ((KeySeq) args[0].Objval);
+ return args[0];
+ }
+
+ private static Xex.Term Fpop (Xex.Domain domain, Xex.Variable vari,
+ Xex.Term[] args)
+ {
+ ((MInputContext) domain.context).pop ();
+ return Tnil;
+ }
+
+ private static Xex.Term Fundo (Xex.Domain domain, Xex.Variable vari,
+ Xex.Term[] args)
+ {
+ int n = args.Length == 0 ? -2 : args[0].Intval;
+ ((MInputContext) domain.context).undo (n);
+ return Tnil;
+ }
+
+ private static Xex.Term Fcommit (Xex.Domain domain, Xex.Variable vari,
+ Xex.Term[] args)
+ {
+ ((MInputContext) domain.context).commit ();
+ return Tnil;
+ }
+
+ private static Xex.Term Funhandle (Xex.Domain domain, Xex.Variable vari,
+ Xex.Term[] args)
+ {
+ ((MInputContext) domain.context).commit ();
+ args = new Xex.Term[2];
+ args[0] = args[1] = Tcatch_tag;
+ return Xex.Fthrow (domain, vari, args);
+ }
+
+ private static Xex.Term Fshift (Xex.Domain domain, Xex.Variable vari,
+ Xex.Term[] args)
+ {
+ ((MInputContext) domain.context).shift (args[0].Symval);
+ return args[0];
+ }
+
+ public override string ToString ()
+ {
+ string str = (String.Format ("({0} (title \"{1}\")", tag, title));
+ if (commands != null)
+ {
+ str += " (commands";
+ foreach (Command cmd in commands)
+ str += " " + cmd;
+ str += ")";
+ }
+ if (var_names != null)
+ {
+ str += " (variables";
+ foreach (Xex.Symbol var in var_names)
+ str += " " + var;
+ str += ")";
+ }
+ if (plugins != null)
+ {
+ str += " (modules";
+ foreach (KeyValuePair<MSymbol, Plugin> kv in plugins)
+ str += " " + kv.Value;
+ str += ")";
+ }
+ str += " (maps";
+ foreach (KeyValuePair<MSymbol, Map> kv in maps)
+ str += " " + kv.Value;
+ str += ") (states";
+ foreach (MPlist p in states)
+ str += " " + p.val;
+ return str + "))";
+ }
+ }
+
+ public class MInputContext
+ {
+ internal static Xex.Symbol Ncandidates_group_size = "candidates-group-size";
+ private static MSymbol Mat_less_than = "@<";
+ private static MSymbol Mat_greater_than = "@>";
+ private static MSymbol Mat_minus = "@-";
+ private static MSymbol Mat_plus = "@+";
+ private static MSymbol Mat_open_square_bracket = "@[";
+ private static MSymbol Mat_close_square_bracket = "@]";
+
+ public MInputMethod im;
+ private MText produced;
+ private bool active;
+ private MText status;
+ internal MText preedit;
+ internal int cursor_pos;
+ internal Mim.Candidates candidates;
+ private MPlist candidate_group;
+ private int candidate_index;
+ private int candidate_from, candidate_to;
+ private bool candidate_show;
+
+ private Stack<Mim.State> states;
+ internal Mim.KeySeq keys;
+ private int key_head;
+ private int state_key_head;
+ private object state_var_values;
+ private int commit_key_head;
+ private MText state_preedit;
+ private int state_pos;
+ internal MPlist markers = new MPlist ();
+ internal MText preceding_text = new MText ();
+ internal MText following_text = new MText ();
+ private bool key_unhandled;
+
+ internal Xex.Domain domain;
+
+ internal Mim.ChangedStatus changed;
+
+ public Mim.ChangedStatus Changed { get { return changed; } }
+
+ public MInputContext (MInputMethod im)
+ {
+ this.im = im;
+ domain = new Xex.Domain (im.domain, this);
+ states = new Stack<Mim.State> ();
+ states.Push ((Mim.State) im.states.val);
+ keys = new Mim.KeySeq ();
+ }
+
+ private void adjust_markers (int from, int to, object inserted)
+ {
+ int ins = (inserted == null ? 0
+ : inserted is int ? 1
+ : ((MText) inserted).Length);
+ int diff = ins - (to - from);
+
+ for (MPlist plist = markers; ! plist.IsEmpty; plist = plist.next)
+ {
+ int pos = plist.Integer;
+ if (pos > from)
+ {
+ if (pos >= to)
+ plist.val = pos + diff;
+ else
+ plist.val = from;
+ }
+ }
+ if (cursor_pos >= to)
+ cursor_pos += diff;
+ else if (cursor_pos > from)
+ cursor_pos = from;
+ }
+
+ private void preedit_replace (int from, int to, int c)
+ {
+ preedit.Del (from, to);
+ preedit.Ins (from, c);
+ adjust_markers (from, to, c);
+ }
+
+ private void preedit_replace (int from, int to, MText mt)
+ {
+ preedit[from, to] = mt;
+ adjust_markers (from, to, mt);
+ }
+
+ internal void insert (Xex.Term arg)
+ {
+ if (arg.IsInt)
+ preedit_replace (cursor_pos, cursor_pos, arg.Intval);
+ else
+ preedit_replace (cursor_pos, cursor_pos, new MText (arg.Strval));
+ changed |= ChangedStatus.Preedit | ChangedStatus.CursorPos;
+ }
+
+ private void update_candidate ()
+ {
+ object candidate = candidates.Current;
+
+ if (candidate is MText)
+ {
+ preedit_replace (candidate_from, candidate_to, (MText) candidate);
+ candidate_to = candidate_from + ((MText) candidate).Length;
+ }
+ else
+ {
+ preedit_replace (candidate_from, candidate_to, (int) candidate);
+ candidate_to = candidate_from + 1;
+ }
+ preedit.PushProp (candidate_from, candidate_to,
+ Mim.Mcandidates, this);
+ cursor_pos = candidate_from;
+ changed |= (ChangedStatus.Preedit | ChangedStatus.CursorPos
+ | CandidateAll);
+ }
+
+ internal void insert_candidates (Xex.Term arg)
+ {
+ int column = 0;
+ Xex.Variable v = domain.GetVar (Ncandidates_group_size, false);
+
+ if (v != null)
+ column = v.Value.Intval;
+ candidates = new Mim.Candidates (arg.Listval, column);
+ candidate_from = candidate_to = cursor_pos;
+ update_candidate ();
+ }
+
+ internal void select (int n)
+ {
+ if (candidates != null)
+ {
+ candidates.Select (n);
+ update_candidate ();
+ }
+ }
+
+ internal int marker (MSymbol sym)
+ {
+ int pos = cursor_pos;
+
+ if (sym.Name.Length == 2 && sym.Name[0] == '@')
+ {
+ switch (sym.Name[0])
+ {
+ case '<': pos = 0; break;
+ case '>': pos = preedit.Length; break;
+ case '-': pos = cursor_pos - 1; break;
+ case '+': pos = cursor_pos + 1; break;
+ case '[':
+ if (pos > 0)
+ {
+ int to;
+ preedit.FindProp (Mim.Mcandidates, pos - 1,
+ out pos, out to);
+ }
+ else
+ pos = 0;
+ break;
+ case ']':
+ if (cursor_pos < preedit.Length - 1)
+ {
+ int from;
+ preedit.FindProp (Mim.Mcandidates, pos,
+ out from, out pos);
+ }
+ else
+ pos = preedit.Length;
+ break;
+ default:
+ if (sym.Name[0] >= '0' && sym.Name[0] <= '9')
+ pos = sym.Name[0];
+ break;
+ }
+ }
+ else if (sym.Name.Length >= 3 && sym.Name[0] == '@')
+ {
+ pos = int.Parse (sym.Name.Substring (2));
+ }
+ else
+ {
+ object val = markers.Get (sym);
+
+ if (val is int)
+ pos = (int) val;
+ }
+ return pos;
+ }
+
+ internal int char_at (int pos)
+ {
+ int c;
+
+ pos += cursor_pos;
+ if (pos < 0)
+ {
+ if (preceding_text.Length < -pos)
+ {
+ MPlist plist = new MPlist ();
+ plist.Push (MSymbol.integer, pos);
+ if (Mim.GetSurroundingText != null
+ && Mim.GetSurroundingText (this, plist)
+ && plist.IsMText
+ && preceding_text.Length < plist.Text.Length)
+ preceding_text = plist.Text;
+ }
+ c = (-pos < preceding_text.Length
+ ? preceding_text[preceding_text.Length + pos] : -1);
+ }
+ else if (pos >= 0 && pos < preedit.Length)
+ c = preedit[pos];
+ else
+ {
+ pos -= preedit.Length;
+ if (pos >= following_text.Length)
+ {
+ MPlist plist = new MPlist ();
+ plist.Push (MSymbol.integer, pos + 1);
+ if (Mim.GetSurroundingText != null
+ && Mim.GetSurroundingText (this, plist)
+ && plist.IsMText
+ && following_text.Length < plist.Text.Length)
+ following_text = plist.Text;
+ }
+ c = (pos < following_text.Length ? following_text[pos] : -1);
+ }
+ return c;
+ }
+
+ internal void delete (int pos)
+ {
+ if (pos < cursor_pos)
+ preedit_replace (pos, cursor_pos, null);
+ else
+ preedit_replace (cursor_pos, pos, null);
+ changed |= ChangedStatus.Preedit | ChangedStatus.CursorPos;
+ }
+
+ internal void show ()
+ {
+ candidate_show = true;
+ changed |= ChangedStatus.CandidateShow;
+ }
+
+ internal void hide ()
+ {
+ candidate_show = false;
+ changed |= ChangedStatus.CandidateShow;
+ }
+
+ internal void move (int pos)
+ {
+ if (pos < 0)
+ pos = 0;
+ else if (pos > preedit.Length)
+ pos = preedit.Length;
+ if (pos != cursor_pos)
+ {
+ cursor_pos = pos;
+ changed |= ChangedStatus.Preedit;
+ }
+ }
+
+ internal void mark (MSymbol sym)
+ {
+ MPlist slot = markers.Find (sym);
+
+ if (slot == null)
+ markers.Push (sym, cursor_pos);
+ else
+ slot.val = cursor_pos;
+ }
+
+ internal void pushback (int n)
+ {
+ if (n > 0)
+ {
+ key_head -= n;
+ if (key_head < 0)
+ key_head = 0;
+ }
+ else if (n == 0)
+ key_head = 0;
+ else
+ {
+ key_head = - n;
+ if (key_head > keys.keyseq.Count)
+ key_head = keys.keyseq.Count;
+ }
+ }
+
+ internal void pushback (Mim.KeySeq keyseq)
+ {
+ if (key_head > 0)
+ key_head--;
+ if (key_head < keys.keyseq.Count)
+ keys.keyseq.RemoveRange (key_head, keys.keyseq.Count - key_head);
+ for (int i = 0; i < keyseq.keyseq.Count; i++)
+ keys.keyseq.Add (keyseq.keyseq[i]);
+ }
+
+ internal void pop ()
+ {
+ if (key_head < keys.keyseq.Count)
+ keys.keyseq.RemoveRange (key_head, 1);
+ }
+
+ internal void undo (int n)
+ {
+ if (n < 0)
+ keys.keyseq.RemoveRange (keys.keyseq.Count + n, - n);
+ else
+ keys.keyseq.RemoveRange (n, keys.keyseq.Count - n);
+ reset ();
+ }
+
+ internal void commit ()
+ {
+ produced.Cat (preedit);
+ preedit.Del ();
+ changed |= ChangedStatus.Preedit;
+ }
+
+ internal void shift (MSymbol sym)
+ {
+ Mim.State state;
+
+ if (sym == MSymbol.t)
+ {
+ if (states.Count > 1)
+ state = states.Pop ();
+ else
+ state = states.Peek ();
+ }
+ else
+ {
+ state = (Mim.State) im.states.Get (sym);
+ if (state == null)
+ throw new Exception ("Unknown state: " + state.name);
+ }
+ if (state == null)
+ state = states.Pop ();
+ if (state == (Mim.State) im.states.val)
+ {
+ commit ();
+ reset ();
+ }
+ else
+ {
+ state_key_head = key_head;
+ state_pos = cursor_pos;
+ state_preedit = preedit.Dup ();
+ if (state != states.Peek ())
+ {
+ states.Push (state);
+ state_var_values = domain.SaveValues ();
+ status = state.title;
+ if (status == null)
+ status = im.title;
+ changed |= ChangedStatus.StateTitle;
+ Xex on_entry
+ = (Xex) state.branches.Get (MSymbol.t);
+ if (on_entry != null)
+ on_entry.Eval (domain);
+ }
+ }
+ }
+
+ internal void reset ()
+ {
+ preedit.Del ();
+ state_preedit.Del ();
+ produced.Del ();
+ markers.Clear ();
+ cursor_pos = 0;
+ key_head = commit_key_head = 0;
+ states.Clear ();
+ states.Push ((Mim.State) im.states.Val);
+ state_key_head = 0;
+ state_pos = 0;
+ }
+
+ internal object GetCandidates (out int column)
+ {
+ column = 0;
+ if (cursor_pos == 0)
+ return null;
+ Mim.Candidates candidates
+ = (Mim.Candidates) preedit.GetProp (cursor_pos - 1, Mim.Mcandidates);
+ if (candidates == null)
+ return null;
+ column = candidates.Column;
+ return candidates.Current;
+ }
+
+ internal void HandleKey ()
+ {
+ }
+
+ public bool Toggle ()
+ {
+ active = ! active;
+ return active;
}
}
}
projects / m17n / m17n-lib-cs.git / blobdiff