git.roojs.org Git - roobuilder/blob - src/Palete/CompletionProvider.vala

   1
   2 //using Gtk;
   3
   4 // not sure why - but extending Gtk.SourceCompletionProvider seems to give an error..
   5 namespace Palete {
   6
   7     public class CompletionProvider : Object, GtkSource.CompletionProvider
   8     {
   9                 public JsRender.JsRender file {
  10                         get { return this.editor.file; }
  11                         private set {}
  12                 }
  13                 public Editor editor;
  14                 //public WindowState windowstate;
  15                 public CompletionModel model;
  16                 global::Gtk.StringFilter? filter = null;
  17
  18                 public CompletionProvider(Editor editor)
  19                 {
  20                     this.editor  = editor;
  21
  22                    // this.windowstate = null; // not ready until the UI is built.
  23
  24                 }
  25
  26                 public string get_name ()
  27                 {
  28                   return  "roojsbuilder";
  29                 }
  30
  31                 public int get_priority (GtkSource.CompletionContext context)
  32                 {
  33                   return 200;
  34                 }
  35
  36
  37                 public bool is_trigger(global::Gtk.TextIter  iter, unichar ch)
  38                 {
  39                         if (this.in_populate || ch == 32) {
  40                                 return false;
  41                         }
  42                         GLib.debug("should trigger? %c", (int) ch);
  43
  44
  45                         return true;
  46                 }
  47
  48                 public  void activate (GtkSource.CompletionContext context, GtkSource.CompletionProposal proposal)
  49                 {
  50                         GLib.debug("compelte activate");
  51
  52                         var  p = (CompletionProposal) proposal;
  53                         GLib.debug("lsp says use %s", p.ci.insertText);
  54
  55
  56                         global::Gtk.TextMark end_mark = null;
  57                         global::Gtk.TextIter begin, end;
  58
  59                         if (!context.get_bounds(out begin, out end)) {
  60                                 return;
  61                         }
  62                         var buffer = begin.get_buffer();
  63
  64                         var  word = p.label;
  65                         if (p.ci.kind == Lsp.CompletionItemKind.Method || p.ci.kind == Lsp.CompletionItemKind.Function) {
  66                                 var bits = p.text.split("(");
  67                                 var abits = bits[1].split(")");
  68                                 var args = abits[0].split(",");
  69
  70                                 word += "(";
  71                                 for(var i = 0 ; i < args.length; i++) {
  72                                         word += i > 0 ? ", " : " ";
  73                                         var wbit = args[i].strip().split(" ");
  74                                         if (wbit.length < 2) {
  75                                                 word += wbit[0];
  76                                                 continue;
  77                                         }
  78                                         var ty = wbit[wbit.length - 2];
  79                                         ty = ty.has_suffix("?") ? "?" : "";
  80                                         word += ty + wbit[wbit.length-1]; // property type..?
  81                                 }
  82                                 word += args.length > 0 ? " )" : ")";
  83                         }
  84
  85                         var len = -1;
  86
  87
  88                         /* If the insertion cursor is within a word and the trailing characters
  89                          * of the word match the suffix of the proposal, then limit how much
  90                          * text we insert so that the word is completed properly.
  91                          */
  92                         if (!end.ends_line() &&
  93                                 !end.get_char().isspace() &&
  94                                 !end.ends_word ())
  95                         {
  96                                 var word_end = end;
  97
  98                                 if (word_end.forward_word_end ()) {
  99                                         var text = end.get_slice(word_end);
 100                                         if (text.length > word.length) {
 101                                                 return;
 102                                         }
 103                                         if (word.has_suffix (text)) {
 104                                                 //g_assert (strlen (word) >= strlen (text));
 105                                                 len = word.length - text.length;
 106                                                 end_mark = buffer.create_mark (null, word_end, false);
 107                                         }
 108                                 }
 109                         }
 110
 111                         buffer.begin_user_action();
 112                         buffer.delete (ref begin, ref end);
 113                         buffer.insert ( ref begin, word, len);
 114                         buffer.end_user_action ();
 115
 116                         if (end_mark != null)
 117                         {
 118                                 buffer.get_iter_at_mark(out end, end_mark);
 119                                 buffer.select_range(end,  end);
 120                                 buffer.delete_mark(end_mark);
 121                         }
 122
 123
 124                 }
 125
 126
 127                 public  void display (GtkSource.CompletionContext context, GtkSource.CompletionProposal proposal, GtkSource.CompletionCell cell)
 128                 {
 129                         //GLib.debug("compelte display");
 130                         var col = cell.get_column();
 131
 132                         var p = (CompletionProposal) proposal;
 133                         switch(col) {
 134                                 case GtkSource.CompletionColumn.TYPED_TEXT:
 135                                         cell.set_text(p.label);
 136                                         break;
 137                                 case GtkSource.CompletionColumn.ICON:
 138 //cell.set_icon_name("lang-define-symbolic");return;
 139 //cell.set_icon_name("lang-include-symbolic");return;
 140 //cell.set_icon_name("lang-typedef-symbolic");return;
 141 //cell.set_icon_name("lang-union-symbolic");return;
 142                                         switch (p.ci.kind) {
 143
 144                                                 case    Lsp.CompletionItemKind.Text: cell.set_icon_name("completion-snippet-symbolic");return;
 145                                                 case    Lsp.CompletionItemKind.Method: cell.set_icon_name("lang-method-symbolic");return;
 146                                                 case    Lsp.CompletionItemKind.Function: cell.set_icon_name("lang-function-symbolic");return;
 147                                                 case    Lsp.CompletionItemKind.Constructor: cell.set_icon_name("lang-method-symbolic");return;
 148                                                 case    Lsp.CompletionItemKind.Field: cell.set_icon_name("lang-struct-field-symbolic");return;
 149                                                 case    Lsp.CompletionItemKind.Variable: cell.set_icon_name("lang-variable-symbolic");return;
 150                                                 case    Lsp.CompletionItemKind.Class: cell.set_icon_name("lang-class-symbolic");return;
 151                                                 case    Lsp.CompletionItemKind.Interface: cell.set_icon_name("lang-class-symbolic");return;
 152                                                 case    Lsp.CompletionItemKind.Module: cell.set_icon_name("lang-namespace-symbolic");return;
 153                                                 case    Lsp.CompletionItemKind.Property:cell.set_icon_name("lang-struct-field-symbolic");return;
 154                                                 case    Lsp.CompletionItemKind.Unit: cell.set_icon_name("lang-variable-symbolic");return;
 155                                                 case    Lsp.CompletionItemKind.Value: cell.set_icon_name("lang-variable-symbolic");return;
 156                                                 case    Lsp.CompletionItemKind.Enum: cell.set_icon_name("lang-enum-symbolic");return;
 157                                                 case    Lsp.CompletionItemKind.Keyword: cell.set_icon_name("completion-word-symbolic");return;
 158                                                 case    Lsp.CompletionItemKind.Snippet: cell.set_icon_name("completion-snippet-symbolic");return;
 159
 160                                                 case    Lsp.CompletionItemKind.Color: cell.set_icon_name("lang-typedef-symbolic");return;
 161                                                 case    Lsp.CompletionItemKind.File:cell.set_icon_name("lang-typedef-symbolic");return;
 162                                                 case    Lsp.CompletionItemKind.Reference: cell.set_icon_name("lang-typedef-symbolic");return;
 163                                                 case    Lsp.CompletionItemKind.Folder:cell.set_icon_name("lang-typedef-symbolic");return;
 164                                                 case    Lsp.CompletionItemKind.EnumMember: cell.set_icon_name("lang-typedef-symbolic");return;
 165                                                 case    Lsp.CompletionItemKind.Constant:cell.set_icon_name("lang-typedef-symbolic");return;
 166                                                 case    Lsp.CompletionItemKind.Struct: cell.set_icon_name("lang-struct-symbolic");return;
 167                                                 case    Lsp.CompletionItemKind.Event:cell.set_icon_name("lang-typedef-symbolic");return;
 168                                                 case    Lsp.CompletionItemKind.Operator:cell.set_icon_name("lang-typedef-symbolic");return;
 169                                                 case    Lsp.CompletionItemKind.TypeParameter:cell.set_icon_name("lang-typedef-symbolic");return;
 170                                                 default:
 171
 172
 173
 174
 175                                                         cell.set_icon_name("completion-snippet-symbolic");
 176                                                         return;
 177                                                 }
 178
 179
 180                                 case  GtkSource.CompletionColumn.COMMENT:
 181                                         cell.set_text(p.text);
 182                                         break;
 183                                 case GtkSource.CompletionColumn.DETAILS:
 184                                         if (p.ci.documentation != null) {
 185                                                 cell.set_text(p.ci.documentation.value);
 186                                                 return;
 187                                         }
 188
 189                                         cell.set_text(p.text);
 190                                         break;
 191                                 default:
 192                                         cell.set_text(null);
 193                                         break;
 194                         }
 195                 }
 196
 197                 bool in_populate = false;
 198
 199                 internal  async GLib.ListModel populate_async (GtkSource.CompletionContext context, GLib.Cancellable? cancellable)
 200                 {
 201                         GLib.debug("pupoulate async");
 202                         var ret = new GLib.ListStore(typeof(CompletionProposal));
 203
 204                         if (this.in_populate) {
 205                                 GLib.debug("pupoulate async  - skipped waiting for reply");
 206                                 return ret;
 207                         }
 208                         this.in_populate = true;
 209
 210                         global::Gtk.TextIter begin, end;
 211                         Lsp.CompletionList res;
 212                         if (context.get_bounds (out begin, out end)) {
 213                                 var line = end.get_line();
 214                                 var offset =  end.get_line_offset();
 215                                 if (this.editor.prop != null) {
 216                                 //      tried line -1 (does not work)
 217                                         GLib.debug("node pad = '%s' %d", this.editor.node.node_pad, this.editor.node.node_pad.length);
 218
 219                                         line += this.editor.prop.start_line ;
 220                                         // this is based on Gtk using tabs (hence 1/2 chars);
 221                                         offset += this.editor.node.node_pad.length;
 222                                         // javascript listeners are indented 2 more spaces.
 223                                         if (this.editor.prop.ptype == JsRender.NodePropType.LISTENER) {
 224                                                 offset += 2;
 225                                         }
 226                                 }
 227                                 //  this should not really be slow, as it's a quick repsonse
 228                                 yield this.file.getLanguageServer().document_change_force(this.file, this.editor.tempFileContents());
 229                                 try {
 230                                         GLib.debug("sending request to language server %s", this.file.getLanguageServer().get_type().name());
 231
 232                                         res = yield this.file.getLanguageServer().completion(this.file, line, offset, 1);
 233                                 } catch (GLib.Error e) {
 234                                         GLib.debug("got error %s", e.message);
 235                                         this.in_populate = false;
 236                                         return ret;
 237                                 }
 238
 239                         } else {
 240                                 this.in_populate = false;
 241                                 return ret;
 242                         }
 243
 244                         GLib.debug("pupoulate async  - got reply");
 245                         this.model = new CompletionModel(this, context, res, cancellable);
 246                         var word = context.get_word();
 247
 248
 249                         var expression = new global::Gtk.PropertyExpression(typeof(CompletionProposal), null, "label");
 250                         this.filter = new global::Gtk.StringFilter(expression);
 251                         this.filter.set_search( word);
 252                         var  filter_model = new global::Gtk.FilterListModel(this.model, this.filter);
 253                         filter.match_mode = global::Gtk.StringFilterMatchMode.PREFIX;
 254                         filter_model.set_incremental(true);
 255                         this.in_populate = false;
 256                         return filter_model;
 257
 258
 259
 260                 }
 261
 262                 internal  void refilter (GtkSource.CompletionContext context, GLib.ListModel in_model)
 263                 {
 264
 265                         //GLib.debug("pupoulate refilter");
 266                         if (this.filter == null) {
 267                                 return;
 268                         }
 269
 270                         var word = context.get_word();
 271                         this.filter.set_search(word);
 272
 273
 274                 }
 275
 276
 277 /*
 278                 public bool activate_proposal (GtkSource.CompletionProposal proposal, TextIter iter)
 279                 {
 280                         var istart = iter;
 281                         istart.backward_find_char(is_space, null);
 282                         istart.forward_char();
 283
 284                 //    var search = iter.get_text(istart);
 285
 286                         var buffer = iter.get_buffer();
 287                         buffer.delete(ref istart, ref iter);
 288                         buffer.insert(ref istart, proposal.get_text(), -1);
 289
 290                         return true;
 291                 }
 292
 293
 294
 295                 private bool is_space(unichar space){
 296                         return space.isspace() || space.to_string() == "";
 297                 }
 298                 */
 299
 300         }
 301         public class CompletionModel : Object, GLib.ListModel
 302         {
 303                 CompletionProvider provider;
 304                 Gee.ArrayList<CompletionProposal> items;
 305                 string search;
 306                 int minimum_word_size = 2;
 307
 308                 public Cancellable? cancellable;
 309
 310                 public CompletionModel(CompletionProvider provider, GtkSource.CompletionContext context, Lsp.CompletionList? res, Cancellable? cancellable)
 311                 {
 312                         this.provider = provider;
 313                         this.cancellable = cancellable;
 314                         this.items = new Gee.ArrayList<CompletionProposal>();
 315
 316                         var word = context.get_word();
 317                         GLib.debug("looking for %s", word);
 318                         this.search = word;
 319                         if (res != null) {
 320                                 foreach(var comp in res.items) {
 321                                          if (comp.label == "_") { // skip '_'
 322                                                 continue;
 323                                         }
 324                                         this.items.add(new CompletionProposal(comp));
 325
 326                                 }
 327                         }
 328                     print("GOT %d results\n", (int) items.size);
 329                         // WHY TWICE?
 330                     if (this.items.size < this.minimum_word_size) {
 331                                 return;
 332                     }
 333
 334                     items.sort((a, b) => {
 335                             return ((string)(a.label)).collate((string)(b.label));
 336                     });
 337
 338                 }
 339
 340
 341
 342                 public GLib.Object? get_item (uint pos)
 343                 {
 344                         return (Object) this.items.get((int) pos);
 345                 }
 346                 public GLib.Type  get_item_type ()
 347                 {
 348                         return typeof(GtkSource.CompletionProposal);
 349                 }
 350                 public   uint get_n_items ()
 351                 {
 352                         return this.items.size;
 353                 }
 354                 public bool can_filter (string word)
 355                 {
 356                         if (word == null || word[0] == 0) {
 357                                 return false;
 358                         }
 359
 360                         if (word.length < this.minimum_word_size) {
 361                                 return false;
 362                         }
 363
 364                         /* If the new word starts with our initial word, then we can simply
 365                          * refilter outside this model using a GtkFilterListModel.
 366                          */
 367
 368                          return word.has_prefix(this.search);
 369                 }
 370                 public void  cancel ()
 371                 {
 372                         if (this.cancellable != null) {
 373                                 this.cancellable.cancel();
 374                         }
 375                 }
 376
 377
 378
 379         }
 380         public class CompletionProposal : Object, GtkSource.CompletionProposal
 381         {
 382
 383                 public string label { get; set; default = ""; }
 384
 385                 public string text  { get; set; default = ""; }
 386                 public string info  { get; set; default = ""; }
 387
 388                 public Lsp.CompletionItem ci;
 389
 390                 public CompletionProposal(Lsp.CompletionItem ci) //string label, string text, string info)
 391                 {
 392
 393                         this.ci = ci;
 394                         this.text = ci.detail == null ? "" : ci.detail ;
 395                         this.label = ci.label;
 396                         this.info = ci.documentation == null ? "": ci.documentation.value;
 397                         //GLib.debug("SET: detail =%s, label = %s; info =%s", ci.detail, ci.label, "to long..");
 398                 }
 399
 400         }
 401
 402 }
 403