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_flag = "surrounding-text-flag";
- private static MSymbol Mpushback = "pushback";
- private static MSymbol Mkeyseq = "keyseq";
-
- private static Xex.Symbol Nprogn = "progn";
+
+
+ private static MSymbol Mget_surrounding_text = "get-surrounding-text";
+ private static MSymbol Mdel_surrounding_text = "del-surrounding-text";
+
+ private static Xex.Symbol Qmap = "map";
+ private static Xex.Symbol Qrule = "rule";
+ private static Xex.Symbol Qkeyseq = "keyseq";
+ private static Xex.Symbol Qprogn = "progn";
+ private static Xex.Symbol Qcatch = "catch";
+ private static Xex.Symbol Qinsert = "insert";
+ private static Xex.Symbol Qinsert_candidates = "insert-candidates";
+ private static Xex.Symbol Qchar_at = "char-at";
+ private static Xex.Symbol Qat_minus_zero = "@-0";
+ private static Xex.Symbol Qselect = "select";
+ private static Xex.Symbol Qdelete = "delete";
+ private static Xex.Symbol Qshift = "shift";
+ private static Xex.Symbol Qmove = "move";
+ private static Xex.Symbol Qmark = "mark";
+ private static Xex.Symbol Qset = "set";
+ private static Xex.Symbol Qadd = "add";
+ private static Xex.Symbol Qsub = "sub";
+ private static Xex.Symbol Qmul = "mul";
+ private static Xex.Symbol Qdiv = "div";
+ private static Xex.Symbol Qcond = "cond";
+ private static Xex.Symbol Qsname = "sname";
+ private static Xex.Symbol Qmname = "mname";
+ private static Xex.Symbol Qstate_hook = "state-hook";
+ private static Xex.Symbol Qcatch_all_branch = "catch-all-branch";
+ private static Xex.Symbol Qbranch = "branch";
+ private static Xex.Symbol Qstate = "state";
+ private static Xex.Symbol Qtitle = "title";
+ private static Xex.Symbol Qeq = "=";
+ private static Xex.Symbol Qeqeq = "==";
+
private static Xex.Term Tnil = new Xex.Term ((Xex.Symbol) "nil");
private static Xex.Term Tcatch_tag = new Xex.Term ((Xex.Symbol) "@mimtag");
= new Dictionary<string, KeyModifier> ();
private static uint keysym_base = 0x200000;
private static uint char_mask = ~((uint) KeyModifier.All);
+ public static Key Reload;
static Key ()
{
keymodifiers["altgr"] = KeyModifier.AltGr;
keymodifiers["super"] = KeyModifier.Super;
keymodifiers["hyper"] = KeyModifier.Hyper;
+ Reload = new Key (keysym_base);
+ keysyms["-reload"] = keysym_base++;
}
private static uint decode_keysym (MSymbol keysym)
get { return ((key & (uint) KeyModifier.All) != 0); }
}
+ public static bool operator== (Key k1, Key k2)
+ {
+ return k1.key == k2.key;
+ }
+
+ public static bool operator!= (Key k1, Key k2)
+ {
+ return k1.key != k2.key;
+ }
+
+ public override bool Equals (object o) { return key == ((Key) o).key; }
+
+ public override int GetHashCode () { return (int) key; }
+
public bool Match (Key k)
{
if (k.key == key)
&& ((m1 & KeyModifier.High) == (m2 & KeyModifier.High)));
}
+ public int ToChar ()
+ {
+ return (int) (key & 0x1FFFFF);
+ }
+
public override string ToString ()
{
- string str = Char.ToString ((char) key);
+ int c = ToChar ();
+ MText mt = null;
+ if (c < 0x20)
+ foreach (KeyValuePair<string, uint> kv in keysyms)
+ if ((uint) c == kv.Value)
+ {
+ mt = kv.Key;
+ break;
+ }
+ if (mt == null)
+ mt = new MText (c);
+
KeyModifier m = ((KeyModifier) key) & KeyModifier.All;
if (m != KeyModifier.None)
{
if ((m & KeyModifier.Shift) != KeyModifier.None)
- str = "S-" + str;
+ mt.Ins (0, "S-");
if ((m & KeyModifier.Control) != KeyModifier.None)
- str = "C-" + str;
+ mt.Ins (0, "C-");
if ((m & KeyModifier.Alt) != KeyModifier.None)
- str = "A-" + str;
+ mt.Ins (0, "A-");
if ((m & KeyModifier.AltGr) != KeyModifier.None)
- str = "G-" + str;
+ mt.Ins (0, "G-");
if ((m & KeyModifier.Super) != KeyModifier.None)
- str = "s-" + str;
+ mt.Ins (0, "s-");
if ((m & KeyModifier.Hyper) != KeyModifier.None)
- str = "H-" + str;
+ mt.Ins (0, "H-");
}
- return str;
+ return (string) mt;
}
}
- public class KeySeq : Xex.TermValue
+ internal class KeySeq : Xex.TermValue
{
public List<Key> keyseq = new List<Key> ();
public override string ToString ()
{
- string str;
-
+ MText mt;
foreach (Key key in keyseq)
- if (key.HasModifier)
+ if (key.HasModifier || key.ToChar () < 0x20)
{
- str = "(keyseq";
+ mt = "(";
foreach (Key k in keyseq)
- str += " " + k.ToString ();
- return str + ")";
+ {
+ if (mt.Length > 1)
+ mt.Cat (' ');
+ mt.Cat (k.ToString ());
+ }
+ return (string) mt.Cat (")");
}
- str = "\"";
- foreach (Key key in keyseq)
- str += key.ToString ();
- return str + "\"";
+ mt = "\"";
+ foreach (Key k in keyseq)
+ {
+ int c = k.ToChar ();
+
+ if (c == '\\' || c == '"')
+ mt.Cat ('\\');
+ mt.Cat (c);
+ }
+ return (string) mt.Cat ("\"");
}
}
{
public MSymbol name;
public MText description;
- public List<KeySeq> keys;
+ internal List<KeySeq> keys;
public Command (MPlist 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)
internal abstract class Marker : Xex.TermValue
{
- private MSymbol name;
+ private Xex.Symbol name;
- public Marker (MSymbol name)
+ private Marker (Xex.Symbol name)
{
this.name = name;
}
public abstract int Position (Context ic);
- public abstract void Mark (Context ic);
+ public virtual void Mark (Context ic)
+ {
+ throw new Exception ("Can't set predefined marker: " + name);
+ }
+ public virtual int CharAt (Context ic)
+ {
+ return ic.preedit[Position (ic)];
+ }
+ public override Xex.TermValue Clone () { return this; }
public static Xex.TermValue parser (Xex.Domain domain, XmlNode node)
{
- MSymbol name = node.InnerText;
-
- return Get ((Context) domain.context, name);
+ return Get ((Xex.Symbol) node.InnerText);
}
public class Named : Marker
{
- int pos;
-
- public Named (MSymbol name) : this (name, 0) { }
-
- private Named (MSymbol name, int p) : base (name) { pos = p; }
+ public Named (Xex.Symbol name) : base (name) { }
- public override int Position (Context ic) { return pos; }
+ public override int Position (Context ic)
+ {
+ int pos;
- public override void Mark (Context ic) { pos = ic.cursor_pos; }
+ if (ic.marker_positions.TryGetValue (this, out pos))
+ return pos;
+ return 0;
+ }
- public override Xex.TermValue Clone ()
+ public override void Mark (Context ic)
{
- return new Named (name, pos);
+ ic.marker_positions[this] = ic.cursor_pos;
}
}
public class Predefined : Marker
{
- public Predefined (MSymbol name) : base (name) { }
+ char tag;
+ public Predefined (Xex.Symbol name) : base (name)
+ {
+ tag = ((string) name)[1];
+ }
public override int Position (Context ic)
{
- switch (name.Name[1]) {
+ switch (tag) {
case '<': return 0;
case '>': return ic.preedit.Length;
case '-': return ic.cursor_pos - 1;
}
return ic.preedit.Length;
default:
- return name.Name[1] - '0';
+ return tag - '0';
}
}
-
- public override void Mark (Context ic)
+ }
+
+ public class PredefinedAbsolute : Marker
+ {
+ private int pos;
+
+ public PredefinedAbsolute (Xex.Symbol name) : base (name)
+ {
+ if (! int.TryParse (((string) name).Substring (1), out pos))
+ throw new Exception ("Invalid marker name: " + name);
+ }
+
+ public override int Position (Context ic)
{
- throw new Exception ("Can't set predefined marker: " + name);
+ return (pos < ic.preedit.Length ? pos : ic.preedit.Length);
}
+ }
+
+ public class PredefinedSurround : Marker
+ {
+ private int distance;
+
+ public PredefinedSurround (Xex.Symbol name) : base (name)
+ {
+ if (! int.TryParse (((string) name).Substring (2), out distance))
+ throw new Exception ("Invalid marker name: " + name);
+ if (distance > 0)
+ distance--;
+ }
- public override Xex.TermValue Clone ()
+ public override int Position (Context ic)
{
- return new Predefined (name);
+ return ic.cursor_pos + distance;
}
+
+ public override int CharAt (Context ic)
+ {
+ int pos = ic.cursor_pos + distance;
+ if (pos < 0)
+ return ic.GetSurroundingChar (pos);
+ else if (pos >= ic.preedit.Length)
+ return ic.GetSurroundingChar (pos - ic.preedit.Length);
+ return ic.preedit[pos];
+ }
}
- static internal Dictionary<MSymbol,Predefined> predefined_markers;
+ static internal Dictionary<Xex.Symbol,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 = new Dictionary<Xex.Symbol, Predefined> ();
+ Xex.Symbol[] symlist
+ = new Xex.Symbol[] {"@<", "@>", "@-", "@+", "@[", "@]" };
+ foreach (Xex.Symbol s in symlist)
predefined_markers[s] = new Predefined (s);
}
- public static Marker Get (Context ic, MSymbol name)
+ public static Marker Get (Xex.Symbol 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)
+ string str = name;
+ if (str[0] == '@')
{
- m = new Named (name);
- ic.markers.Put (name, m);
+ Predefined pred;
+ if (predefined_markers.TryGetValue (name, out pred))
+ return pred;
+ if (str.Length == 1)
+ throw new Exception ("Invalid marker name: " + name);
+ if (Char.IsDigit (str[1]))
+ return new PredefinedAbsolute (name);
+ if (str.Length == 2 || name == Qat_minus_zero
+ || ! (str[1] == '-' || str[1] == '+'))
+ throw new Exception ("Invalid marker name: " + name);
+ return new PredefinedSurround (name);
}
- return m;
+ return new Named (name);
}
}
}
}
- internal abstract class Selector : Xex.TermValue
+ internal class Selector : Xex.TermValue
{
- private Selector () { }
+ static new Dictionary<MSymbol, Selector> selectors;
+
+ static Selector ()
+ {
+ selectors = new Dictionary<MSymbol, Selector> ();
+ MSymbol[] symlist = new MSymbol[] { "@<", "@=", "@>", "@-", "@+",
+ "@[", "@]" };
+ foreach (MSymbol s in symlist)
+ selectors[s] = new Selector (s);
+ selectors["@first"] = new Selector ('<');
+ selectors["@current"] = new Selector ('=');
+ selectors["@last"] = new Selector ('>');
+ selectors["@previous"] = new Selector ('-');
+ selectors["@next"] = new Selector ('+');
+ selectors["@previous-candidate-change"] = new Selector ('[');
+ selectors["@next-candidate-change"] = new Selector (']');
+ }
+
+ private char tag;
- public abstract void Select (Candidates candidates);
+ private Selector (MSymbol sym) { tag = sym.Name[1]; }
+
+ private Selector (char tag) { this.tag = tag; }
public static Xex.TermValue parser (Xex.Domain domain, XmlNode node)
{
- MSymbol name = node.InnerText;
- Predefined pred;
+ return Get ((MSymbol) node.InnerText);
+ }
- 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))
+ public static Xex.TermValue Get (MSymbol name)
+ {
+ Selector selector;
+ if (! selectors.TryGetValue (name, out selector))
throw new Exception ("Invalid selector name: " + name);
- return new Numbered (index);
+ return selector;
}
public override Xex.TermValue Clone () { return this; }
- public class Numbered : Selector
+ public void Select (Candidates candidates)
{
- int index;
+ 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;
+ }
+ }
+ }
- public Numbered (int index) { this.index = index; }
+ internal class Map
+ {
+ public MSymbol name;
+ public List<Entry> entries = new List<Entry> ();
- public override void Select (Candidates can) { can.Select (index); }
- }
+ public Map (MSymbol name) { this.name = name; }
- public class Predefined : Selector
+ public class Entry
{
- private char tag;
+ public KeySeq keyseq;
+ public Xex.Term[] actions;
- internal Predefined (MSymbol sym) { this.tag = sym.Name[1]; }
-
- public override void Select (Candidates candidates)
+ public Entry (Xex.Domain domain, KeySeq keyseq, Xex.Term[] actions)
{
- 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;
- }
+ this.keyseq = keyseq;
+ this.actions = actions;
}
}
- 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);
- }
+ public override string ToString ()
+ {
+ string str = "(" + name;
+ foreach (Entry e in entries)
+ str += " " + e.keyseq.ToString ();
+ return str + ")";
+ }
}
- internal class Map
+ internal class Keymap
{
- public MSymbol name;
- public Dictionary<Key, Map> submaps;
- public Xex.Term actions;
+ public Dictionary<Key, Keymap> submaps;
+ public Xex.Term[] map_actions, branch_actions;
- public void Add (KeySeq keys, int index, Xex.Term actions)
- {
- Map sub = null;
+ public Keymap () { }
- if (submaps == null)
- submaps = new Dictionary<Key, Map> ();
+ public void Add (KeySeq keys, int index,
+ Xex.Term[] map_actions, Xex.Term[] branch_actions)
+ {
+ if (index == keys.keyseq.Count)
+ {
+ this.map_actions = map_actions;
+ this.branch_actions = branch_actions;
+ }
else
- submaps.TryGetValue (keys.keyseq[index], out sub);
- if (sub == null)
{
Key key = keys.keyseq[index];
- submaps[key] = sub = new Map ();
+ Keymap sub = null;
+
+ if (submaps == null)
+ submaps = new Dictionary<Key, Keymap> ();
+ else
+ submaps.TryGetValue (key, out sub);
+ if (sub == null)
+ submaps[key] = sub = new Keymap ();
+ sub.Add (keys, index + 1, map_actions, branch_actions);
}
- if (index + 1 < keys.keyseq.Count)
- sub.Add (keys, index + 1, actions);
- else
- this.actions = actions;
}
- public Xex.Term Lookup (KeySeq keys, int index)
+ public void AddMap (Map map, Xex.Term[] branch_actions)
+ {
+ foreach (Map.Entry entry in map.entries)
+ Add (entry.keyseq, 0, entry.actions, branch_actions);
+ }
+
+ public Keymap Lookup (KeySeq keys, ref int index)
{
- Map sub;
+ Keymap 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;
+ if (index < keys.keyseq.Count
+ && submaps != null
+ && submaps.TryGetValue (keys.keyseq[index], out sub))
+ {
+ index++;
+ return sub.Lookup (keys, ref index);
+ }
+ return this;
}
private void describe (MText mt, KeySeq keyseq)
{
- if (keyseq.keyseq.Count > 0)
+ if (map_actions != null || branch_actions != null)
{
- mt.Cat (" (").Cat (keyseq.ToString ());
- mt.Cat (' ').Cat (actions.ToString ());
+ if (mt.Length > 0)
+ mt.Cat (" ");
+ mt.Cat ('(').Cat (keyseq.ToString ());
+ if (map_actions != null)
+ foreach (Xex.Term term in map_actions)
+ mt.Cat (' ').Cat (term.ToString ());
+ if (branch_actions != null)
+ foreach (Xex.Term term in branch_actions)
+ mt.Cat (' ').Cat (term.ToString ());
mt.Cat (')');
}
if (submaps != null)
- foreach (KeyValuePair<Key, Map> kv in submaps)
+ foreach (KeyValuePair<Key, Keymap> kv in submaps)
{
keyseq.keyseq.Add (kv.Key);
kv.Value.describe (mt, keyseq);
public override string ToString ()
{
- MText mt = "(" + name.Name;
+ MText mt = "";
KeySeq keyseq = new KeySeq ();
describe (mt, keyseq);
internal class State
{
- public MSymbol name;
+ public Xex.Symbol name;
public MText title;
- public MPlist branches = new MPlist ();
+ public Xex.Term[] enter_actions, fallback_actions;
+ public Keymap keymap = new Keymap ();
- public State (MSymbol name)
+ public State (Xex.Symbol name, MText title)
{
this.name = name;
+ this.title = title;
+ }
+
+ public State (MInputMethod im, XmlNode node)
+ {
+ this.name = node.Attributes[Qsname].Value;
+ XmlAttribute attr = node.Attributes[Qtitle];
+ if (attr != null)
+ title = (MText) attr.Value;
+ keymap = new Keymap ();
+ for (node = node.FirstChild; node != null; node = node.NextSibling)
+ {
+ if (node.Name == Qstate_hook)
+ enter_actions = Xex.ParseTerms (im.domain, node.FirstChild);
+ else if (node.Name == Qcatch_all_branch)
+ fallback_actions = Xex.ParseTerms (im.domain, node.FirstChild);
+ else if (node.Name == Qbranch)
+ {
+ MSymbol mapname = node.Attributes[Qmname].Value;
+ Map map;
+ if (im.maps.TryGetValue (mapname, out map))
+ keymap.AddMap (map, Xex.ParseTerms (im.domain,
+ node.FirstChild));
+ else
+ throw new Exception ("Unknown map: " + mapname);
+ }
+ }
+ }
+
+ public State (MInputMethod im, MPlist plist)
+ {
+ if (! plist.IsSymbol)
+ throw new Exception ("Invalid state: " + plist);
+ this.name = plist.Symbol.Name;
+ plist = plist.next;
+ if (plist.IsMText)
+ {
+ this.title = plist.Text;
+ plist = plist.next;
+ }
+ keymap = new Keymap ();
+ for (; ! plist.IsEmpty; plist = plist.next)
+ {
+ if (! plist.IsPlist)
+ throw new Exception ("Invalid branch: " + plist);
+ MPlist p = plist.Plist;
+ if (! p.IsSymbol)
+ throw new Exception ("Invalid branch: " + p);
+ MSymbol mapname = p.Symbol;
+ if (mapname == MSymbol.t)
+ enter_actions = im.parse_actions (p.next, false);
+ else if (mapname == MSymbol.nil)
+ fallback_actions = im.parse_actions (p.next, false);
+ else
+ {
+ Map map;
+ if (im.maps.TryGetValue (mapname, out map))
+ keymap.AddMap (map, im.parse_actions (p.next, false));
+ else
+ throw new Exception ("Unknown map: " + mapname);
+ }
+ }
}
public override string ToString ()
{
- MText mt = "(" + name.Name;
+ MText mt = "(" + name;
if (title != null)
mt.Cat (" \"" + title + "\"");
- for (MPlist p = branches; ! p.IsEmpty; p = p.next)
- mt.Cat (" (" + p.Key + " " + (Xex) p.Val + ")");
+ mt.Cat (keymap.ToString ());
return (string) mt + ")";
}
}
internal Xex.Symbol[] var_names;
internal Dictionary<MSymbol, Plugin> plugins;
internal Dictionary<MSymbol, Map> maps;
- internal MPlist states;
+ internal Dictionary<Xex.Symbol, State> states;
+ internal State initial_state;
static MInputMethod ()
{
im_domain.DefTerm ("selector", Selector.parser);
im_domain.DefSubr (Finsert, "insert", false, 1, 1);
- im_domain.DefSubr (Finsert_candidates, "candidates", false, 1, -1);
+ 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", false, 0, 0);
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 (Fshift_back, "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, 1, 1);
im_domain.DefSubr (Fsurrounding_flag, "surrounding-text-flag",
return true;
}
+ private void add_default_state ()
+ {
+ Xex.Symbol Qinit = "init";
+ State state = new State (Qinit, null);
+ foreach (KeyValuePair<MSymbol, Map>kv in maps)
+ state.keymap.AddMap (kv.Value, null);
+ states[Qinit] = initial_state = state;
+ }
+
private void load (MPlist plist, bool full)
{
maps = new Dictionary<MSymbol, Map> ();
- states = new MPlist ();
+ states = new Dictionary<Xex.Symbol, State> ();
for (; ! plist.IsEmpty; plist = plist.next)
if (plist.IsPlist)
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);
- }
+ if (states.Count == 0)
+ add_default_state ();
}
private void load (XmlNode node, bool full)
bool skip_header = load_status == LoadStatus.Header;
maps = new Dictionary<MSymbol, Map> ();
- states = new MPlist ();
+ states = new Dictionary<Xex.Symbol, State> ();
if (node.NodeType == XmlNodeType.Document)
node = node.FirstChild;
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_flag);
- }
- else
- {
- if (sym.Name[1] == '+')
- pos--;
- p.Add (MSymbol.symbol, Mchar_at);
- p.Add (MSymbol.integer, pos);
- }
- plist.Set (MSymbol.plist, p);
- }
- }
- }
+ if (states.Count == 0)
+ add_default_state ();
}
private static MText parse_description (MPlist plist)
range = null;
else
{
- range = new int[pl.Count * 2];
- for (int i = 0; i < range.Length; i++)
+ int nrange = pl.Count;
+ range = new int[nrange * 2];
+ for (int i = 0; i < nrange; i++)
{
if (pl.IsPlist)
{
private void parse_maps (XmlNode node)
{
+ for (node = node.FirstChild; node != null; node = node.NextSibling)
+ if (node.Name == Qmap)
+ {
+ MSymbol name = node.Attributes[0].Value;
+ Map map = new Map (name);
+ maps[name] = map;
+ for (XmlNode nd = node.FirstChild; nd != null; nd = nd.NextSibling)
+ if (nd.Name == Qrule)
+ {
+ XmlNode n = nd.FirstChild;
+ if (n.Name != Qkeyseq)
+ continue;
+ KeySeq keyseq = (KeySeq) KeySeq.parser (domain, n);
+ Xex.Term[] actions = Xex.ParseTerms (domain, n.NextSibling);
+ map.entries.Add (new Map.Entry (domain, keyseq, actions));
+ }
+ }
+ }
+
+ private void parse_states (MPlist plist)
+ {
+ for (; ! plist.IsEmpty; plist = plist.next)
+ if (plist.IsPlist)
+ {
+ State state = new State (this, plist.Plist);
+ states[state.name] = state;
+ }
}
private void parse_states (XmlNode node)
{
+ for (node = node.FirstChild; node != null; node = node.NextSibling)
+ if (node.Name == Qstate)
+ {
+ State state = new State (this, node);
+ states[state.name] = state;
+ }
}
private void parse_include (MPlist plist)
{
if (target_name == MSymbol.nil)
{
- for (p = im.states; ! p.IsEmpty; p = p.next)
- states.Add (p.key, p.val);
+ foreach (KeyValuePair<Xex.Symbol, State> kv in im.states)
+ states[kv.Key] = kv.Value;
}
else
{
- object state = im.states.Get (target_name);
- if (state != null)
- states.Add (target_name, state);
+ Xex.Symbol state_name = target_name.Name;
+ State state;
+ if (im.states.TryGetValue (state_name, out state))
+ states[state_name] = state;
}
}
}
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));
+ List<Xex.Term> arg = new List<Xex.Term> (parse_actions (p, false));
args[i] = new Xex.Term (arg);
}
- return new Xex.Term (domain, (Xex.Symbol) Mcond.Name, args);
+ return new Xex.Term (domain, Qcond, args);
}
- private Xex.Term[] parse_action (MPlist plist)
+ private Xex.Term parse_insert (MPlist plist)
{
- Xex.Term[] terms = new Xex.Term[plist.Count];
-
- for (int i = 0; ! plist.IsEmpty; i++, plist = plist.next)
+ Xex.Term[] args;
+ Xex.Term arg;
+ if (plist.IsSymbol)
+ arg = new Xex.Term (domain, (Xex.Symbol) plist.Symbol.Name);
+ else if (plist.IsMText)
+ arg = new Xex.Term ((string) plist.Text);
+ else if (plist.IsInteger)
+ arg = new Xex.Term (plist.Integer);
+ else if (plist.IsPlist)
{
- 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 pl = plist.Plist;
+
+ args = new Xex.Term[pl.Count];
+ int i;
+ for (i = 0; ! pl.IsEmpty; i++, pl = pl.next)
{
- 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 (pl.IsMText)
+ args[i] = new Xex.Term ((string) pl.Text);
+ else if (pl.IsPlist)
{
- 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));
+ List<Xex.Term> list = new List<Xex.Term> ();
+ for (MPlist p = pl.Plist; ! p.IsEmpty; p = p.next)
+ {
+ if (p.IsMText)
+ list.Add (new Xex.Term ((string) p.Text));
+ else
+ throw new Exception ("Invalid candidates: " + p);
+ }
}
else
- terms[i] = new Xex.Term (domain, (Xex.Symbol) name.Name,
- parse_action (p));
+ throw new Exception ("Invalid candidates: " + pl);
+ }
+ return new Xex.Term (domain, Qinsert_candidates, args);
+ }
+ else
+ throw new Exception ("Invalid arg to insert: " + plist);
+ args = new Xex.Term[1];
+ args[0] = arg;
+ return new Xex.Term (domain, Qinsert, args);
+ }
+
+ private Xex.Term parse_select (MPlist plist)
+ {
+ Xex.Term[] args = new Xex.Term[1];
+ if (plist.IsInteger)
+ args[0] = new Xex.Term (plist.Integer);
+ else if (! plist.IsSymbol)
+ throw new Exception ("Invalid arg to select: " + plist);
+ else if (plist.Symbol.Name[0] == '@')
+ args[0] = new Xex.Term (Selector.Get (plist.Symbol));
+ else
+ args[0] = new Xex.Term (domain, (Xex.Symbol) plist.Symbol.Name);
+ return new Xex.Term (domain, Qselect, args);
+ }
+
+ private Xex.Term parse_funcall_with_marker (MPlist plist, Xex.Symbol func)
+ {
+ Xex.Term[] args = new Xex.Term[1];
+ if (plist.IsInteger && func != Qmark)
+ args[0] = new Xex.Term (plist.Integer);
+ else if (plist.IsSymbol)
+ args[0] = new Xex.Term (Marker.Get ((Xex.Symbol) plist.Symbol.Name));
+ else
+ throw new Exception ("Invalid arg to " + func + ": " + plist);
+ return new Xex.Term (domain, func, args);
+ }
+
+ private Xex.Term parse_char_at (Xex.Symbol name)
+ {
+ Xex.Term[] args = new Xex.Term[1];
+ args[0] = new Xex.Term (Marker.Get (name));
+ return new Xex.Term (domain, Qchar_at, args);
+ }
+
+ private Xex.Term parse_shift (MPlist plist)
+ {
+ Xex.Term[] args = new Xex.Term[1];
+ if (! plist.IsSymbol)
+ throw new Exception ("Invalid arg to shift: " + plist);
+ args[0] = new Xex.Term ((Xex.Symbol) plist.Symbol.Name);
+ return new Xex.Term (domain, Qshift, args);
+ }
+
+ private Xex.Term parse_action (MPlist plist, bool as_funarg)
+ {
+ if (plist.IsPlist)
+ {
+ MPlist p = plist.Plist;
+
+ if (p.IsMText || p.IsPlist)
+ return parse_insert (plist);
+ if (! p.IsSymbol)
+ throw new Exception ("Invalid action: " + p);
+ Xex.Symbol name = p.Symbol.Name;
+ p = p.next;
+ if (name == Qcond)
+ return parse_cond (p);
+ if (name == Qinsert)
+ return parse_insert (p);
+ if (name == Qselect)
+ return parse_select (p);
+ if (name == Qdelete || name == Qmove || name == Qmark)
+ return parse_funcall_with_marker (p, name);
+ if (name == Qshift)
+ return parse_shift (p);
+ if (((string) name)[0] == '@')
+ return parse_char_at (name);
+ if (name == Qset || name == Qadd || name == Qsub
+ || name == Qmul || name == Qdiv)
+ {
+ if (! p.IsSymbol)
+ throw new Exception ("Invalid action: " + p);
+ Xex.Symbol varname = p.Symbol.Name;
+ Xex.Term[] args = new Xex.Term[1];
+ args[0] = parse_action (p.next, true);
+ return new Xex.Term (domain, name, varname, args);
}
else
- throw new Exception ("Invalid action: " + plist);
+ {
+ if (name == Qeq)
+ name = Qeqeq;
+ if (p.IsEmpty)
+ return new Xex.Term (domain, name, null);
+ else
+ return new Xex.Term (domain, name, parse_actions (p, true));
+ }
}
- return terms;
+ else if (plist.IsSymbol)
+ return new Xex.Term (domain, (Xex.Symbol) plist.Symbol.Name);
+ else if (plist.IsMText)
+ return (as_funarg ? new Xex.Term ((string) plist.Text)
+ : parse_insert (plist));
+ else if (plist.IsInteger)
+ return (as_funarg ? new Xex.Term (plist.Integer)
+ : parse_insert (plist));
+ else
+ throw new Exception ("Invalid action: " + plist);
}
+ private Xex.Term[] parse_actions (MPlist plist, bool as_funarg)
+ {
+ Xex.Term[] terms = new Xex.Term[plist.Count];
+
+ for (int i = 0; ! plist.IsEmpty; i++, plist = plist.next)
+ terms[i] = parse_action (plist, as_funarg);
+ return terms;
+ }
private void parse_macros (MPlist plist)
{
if (! p.IsSymbol)
continue;
- transform (p.next);
domain.Defun ((Xex.Symbol) p.Symbol.Name, false, null,
- parse_action (p.next), false);
+ parse_actions (p.next, false), false);
}
}
if (! pl.IsSymbol)
continue;
- Map map = new Map ();
- map.name = pl.Symbol;
- maps[map.name] = map;
+ Map map = new Map (pl.Symbol);
+ maps[pl.Symbol] = map;
for (pl = pl.next; ! pl.IsEmpty; pl = pl.next)
{
if (! pl.IsPlist)
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);
+ Xex.Term[] actions
+ = p.IsEmpty ? null : parse_actions (p, false);
+ map.entries.Add (new Map.Entry (domain, keys, actions));
}
}
}
private static Xex.Term Fshift (Xex.Domain domain, Xex.Variable vari,
Xex.Term[] args)
{
- ((Context) domain.context).shift (args[0].Symval);
+ Context ic = (Context) domain.context;
+ State state;
+ if (ic.im.states.TryGetValue (args[0].Symval, out state))
+ ((Context) domain.context).shift (state);
+ else
+ throw new Exception ("Unknown state: " + args[0].Symval);
return args[0];
}
- private static Xex.Term Fshift_back (Xex.Domain domain, Xex.Variable vari,
- Xex.Term[] args)
+ private static Xex.Term Fshiftback (Xex.Domain domain, Xex.Variable vari,
+ Xex.Term[] args)
{
- ((Context) domain.context).shift_back ();
+ ((Context) domain.context).shift (null);
return Tnil;
}
Xex.Variable vari,
Xex.Term[] args)
{
- return new Xex.Term (((Context) domain.context).surrounding_flag);
+ return new Xex.Term (((Context) domain.context).SurroundingFlag);
}
public override string ToString ()
foreach (KeyValuePair<MSymbol, Map> kv in maps)
str += " " + kv.Value;
str += ") (states";
- foreach (MPlist p in states)
- str += " " + p.val;
+ foreach (KeyValuePair<Xex.Symbol, State> kv in states)
+ {
+ str += " (" + kv.Key + " " + kv.Value.keymap + ")";
+ }
return str + "))";
}
public class Context
{
- internal static Xex.Symbol Ncandidates_group_size
+ internal static Xex.Symbol Qcandidates_group_size
= "candidates-group-size";
- public MInputMethod im;
+ internal MInputMethod im;
+ private Dictionary<MSymbol, Callback> callbacks
+ = new Dictionary<MSymbol, Callback> ();
+
private MText produced;
private bool active;
private MText status;
internal MText preedit;
internal int cursor_pos;
+ internal Dictionary<Marker, int> marker_positions
+ = new Dictionary<Marker, int> ();
internal Candidates candidates;
private int candidate_from, candidate_to;
private bool candidate_show;
+ public bool CandidateShow { get { return candidate_show; } }
+
+ private List<State> state_list = new List<State> ();
+ private Keymap keymap;
- private Stack<State> state_stack;
- internal KeySeq keys;
+ // Sequence of input keys.
+ internal KeySeq keys = new KeySeq ();
+
+ // Index into KEYS specifying the next key to handle.
internal 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 ();
+
+ // Set to false before calling the method 'handle_key', and set
+ // to true when some key is unhandled.
private bool key_unhandled;
+ // The unhandled key. It has the meaning only when
+ // 'key_unhandled' is true.
+ private Key unhandled_key;
+
internal Xex.Domain domain;
internal ChangedStatus changed;
- public ChangedStatus Changed { get { return changed; } }
+ static MPlist callback_arg = new MPlist ();
- public Context (MInputMethod im)
+ static Xex.Term[] catch_args = new Xex.Term[2];
+
+ private bool take_action (Xex.Term[] actions)
{
- this.im = im;
- domain = new Xex.Domain (im.domain, this);
- state_stack = new Stack<State> ();
- state_stack.Push ((State) im.states.val);
- keys = new KeySeq ();
+ catch_args[0] = Tcatch_tag;
+ catch_args[1]= new Xex.Term (domain, Qprogn, actions);
+ Xex.Term term = new Xex.Term (domain, Qcatch, catch_args);
+ term = term.Eval (domain);
+ return (! term.IsSymbol || term.Symval != Tcatch_tag.Symval);
+ }
+
+
+ private bool call_callback (MSymbol name, MPlist arg)
+ {
+ Callback callback;
+ if (! callbacks.TryGetValue (name, out callback))
+ return false;
+ return callback (this, arg);
}
+ private bool get_surrounding_text (int len)
+ {
+ if (len < 0 ? -len <= preceding_text.Length
+ : len <= following_text.Length)
+ return true;
+ callback_arg.Set (MSymbol.integer, len);
+ if (! call_callback (Mget_surrounding_text, callback_arg)
+ || ! callback_arg.IsMText)
+ return false;
+ if (len < 0)
+ {
+ preceding_text = callback_arg.Text;
+ return (-len <= preceding_text.Length);
+ }
+ following_text = callback_arg.Text;
+ return (len <= following_text.Length);
+ }
+
+ internal int SurroundingFlag
+ {
+ get { return (callbacks.ContainsKey (Mget_surrounding_text) ? 1 : 0); }
+ }
+
+ internal int GetSurroundingChar (int pos)
+ {
+ if (! get_surrounding_text (pos < 0 ? pos : pos + 1))
+ return 0;
+ if (pos < 0)
+ return preceding_text[preceding_text.Length + pos];
+ return following_text[pos];
+ }
+
private void adjust_markers (int from, int to, object inserted)
{
int ins = (inserted == null ? 0
: ((MText) inserted).Length);
int diff = ins - (to - from);
- for (MPlist plist = markers; ! plist.IsEmpty; plist = plist.next)
+ foreach (Marker m in marker_positions.Keys)
{
- int pos = plist.Integer;
+ int pos = marker_positions[m];
if (pos > from)
{
if (pos >= to)
- plist.val = pos + diff;
+ marker_positions[m] = pos + diff;
else
- plist.val = from;
+ marker_positions[m] = from;
}
}
if (cursor_pos >= to)
internal void insert_candidates (Xex.Term arg)
{
int column = 0;
- Xex.Variable v = domain.GetVar (Ncandidates_group_size, false);
+ Xex.Variable v = domain.GetVar (Qcandidates_group_size, false);
if (v != null)
column = v.Value.Intval;
}
}
- 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 (Mcandidates, pos - 1,
- out pos, out to);
- }
- else
- pos = 0;
- break;
- case ']':
- if (cursor_pos < preedit.Length - 1)
- {
- int from;
- preedit.FindProp (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;
}
}
- 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)
changed |= ChangedStatus.Preedit;
}
- internal void shift (MSymbol sym)
+ internal void shift (State state)
{
- State state;
+ bool changed;
- if (sym == MSymbol.t)
+ if (state == null)
{
- if (state_stack.Count > 1)
- state = state_stack.Pop ();
- else
- state = state_stack.Peek ();
+ if (state_list.Count > 1)
+ state_list.RemoveAt (state_list.Count - 1);
+ state = state_list[state_list.Count - 1];
+ changed = true;
}
else
{
- state = (State) im.states.Get (sym);
- if (state == null)
- throw new Exception ("Unknown state: " + state.name);
+ changed = state != state_list[state_list.Count - 1];
+ if (changed)
+ state_list.Add (state);
}
- if (state == null)
- state = state_stack.Pop ();
- if (state == (State) im.states.val)
+ if (state_list.Count == 1)
{
commit ();
reset ();
state_key_head = key_head;
state_pos = cursor_pos;
state_preedit = preedit.Dup ();
- if (state != state_stack.Peek ())
+ state_var_values = domain.SaveValues ();
+ if (changed)
{
- state_stack.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);
+ this.changed |= ChangedStatus.StateTitle;
+ if (state.enter_actions != null)
+ take_action (state.enter_actions);
}
}
}
preedit.Del ();
state_preedit.Del ();
produced.Del ();
- markers.Clear ();
+ marker_positions.Clear ();
cursor_pos = 0;
+ keys.keyseq.Clear ();
key_head = commit_key_head = 0;
- state_stack.Clear ();
- state_stack.Push ((State) im.states.Val);
- state_key_head = 0;
+ state_list.Clear ();
+ state_list.Add (im.initial_state);
+ keymap = im.initial_state.keymap;
+ key_head = state_key_head = 0;
state_pos = 0;
}
+ public Context (MInputMethod im)
+ {
+ this.im = im;
+ domain = new Xex.Domain (im.domain, this);
+ reset ();
+ }
+
+ public ChangedStatus Changed { get { return changed; } }
+
+ public void AddCallback (MSymbol name, Callback callback)
+ {
+ callbacks[name] = callback;
+ }
+
internal object GetCandidates (out int column)
{
column = 0;
return candidates.Current;
}
- internal void HandleKey ()
+ private void restore_state ()
{
}
+ private bool handle_key ()
+ {
+ State state = state_list[state_list.Count - 1];
+ Keymap sub = keymap.Lookup (keys, ref key_head);
+
+ if (sub != keymap)
+ {
+ keymap = sub;
+ if (keymap.map_actions != null)
+ {
+ restore_state ();
+ if (! take_action (keymap.map_actions))
+ return false;
+ }
+ else if (keymap.submaps != null)
+ {
+ for (int i = state_key_head; i < key_head; i++)
+ preedit_replace (cursor_pos, cursor_pos,
+ keys.keyseq[i].ToChar ());
+ }
+ if (keymap.submaps == null)
+ {
+ if (keymap.branch_actions != null)
+ {
+ if (! take_action (keymap.branch_actions))
+ return false;
+ }
+ if (keymap != state.keymap)
+ shift (state);
+ }
+ }
+ else
+ {
+ if (keymap.branch_actions != null)
+ {
+ if (! take_action (keymap.branch_actions))
+ return false;
+ }
+ if (state == state_list[state_list.Count - 1])
+ {
+ if (state == im.initial_state
+ && key_head < keys.keyseq.Count)
+ return false;
+ if (keymap != state.keymap)
+ shift (state);
+ else if (keymap.branch_actions == null)
+ shift (im.initial_state);
+ }
+ }
+ return true;
+ }
+
public bool Toggle ()
{
active = ! active;
return active;
}
+
+ public bool UnhandledKey (out Key key)
+ {
+ key = unhandled_key;
+ return key_unhandled;
+ }
+
+ public bool Produced (out MText mt)
+ {
+ mt = produced;
+ return (produced.Length > 0);
+ }
+
+ // Return value:
+ // true: All keys are handled and there's no text to commit.
+ // false: Some key is unhandled or there's a text to commit.
+ // The caller should use methods UnhandledKey and Produced.
+
+ public bool Filter (Key key)
+ {
+ if (key == Key.Reload)
+ return true;
+ changed = ChangedStatus.None;
+ produced.Del ();
+ preceding_text.Del ();
+ following_text.Del ();
+
+ key_unhandled = false;
+ keys.keyseq.Add (key);
+ int count = 0;
+ while (key_head < keys.keyseq.Count)
+ {
+ if (! handle_key ())
+ {
+ unhandled_key = keys.keyseq[key_head++];
+ key_unhandled = true;
+ break;
+ }
+ if (++count == 100)
+ break;
+ }
+ keys.keyseq.RemoveRange (0, key_head);
+ return (! key_unhandled && produced.Length == 0);
+ }
}
}
}
projects / m17n / m17n-lib-cs.git / blobdiff