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                         if (this.editor.buffer.el.iter_has_context_class(iter, "comment") ||
  43                                 this.editor.buffer.el.iter_has_context_class(iter, "string")
  44                         ) {
  45                                 return false;
  46                         }
  47
  48
  49                         //GLib.debug("should trigger? %c", (int) ch);
  50
  51
  52                         return true;
  53                 }
  54
  55                 public  void activate (GtkSource.CompletionContext context, GtkSource.CompletionProposal proposal)
  56                 {
  57                         GLib.debug("compelte activate");
  58
  59                         var  p = (CompletionProposal) proposal;
  60                         GLib.debug("lsp says use %s", p.ci.insertText);
  61
  62
  63                         global::Gtk.TextMark end_mark = null;
  64                         global::Gtk.TextIter begin, end;
  65
  66                         if (!context.get_bounds(out begin, out end)) {
  67                                 return;
  68                         }
  69                         var buffer = begin.get_buffer();
  70
  71                         var  word = p.label;
  72                         if (p.ci.kind == Lsp.CompletionItemKind.Method || p.ci.kind == Lsp.CompletionItemKind.Function) {
  73                                 var bits = p.text.split("(");
  74                                 var abits = bits[1].split(")");
  75                                 var args = abits[0].split(",");
  76
  77                                 word += "(";
  78                                 for(var i = 0 ; i < args.length; i++) {
  79                                         word += i > 0 ? ", " : " ";
  80                                         var wbit = args[i].strip().split(" ");
  81                                         if (wbit.length < 2) {
  82                                                 word += wbit[0];
  83                                                 continue;
  84                                         }
  85                                         var ty = wbit[wbit.length - 2];
  86                                         ty = ty.has_suffix("?") ? "?" : "";
  87                                         word += ty + wbit[wbit.length-1]; // property type..?
  88                                 }
  89                                 word += args.length > 0 ? " )" : ")";
  90                         }
  91
  92                         var len = -1;
  93
  94
  95                         /* If the insertion cursor is within a word and the trailing characters
  96                          * of the word match the suffix of the proposal, then limit how much
  97                          * text we insert so that the word is completed properly.
  98                          */
  99                         if (!end.ends_line() &&
 100                                 !end.get_char().isspace() &&
 101                                 !end.ends_word ())
 102                         {
 103                                 var word_end = end;
 104
 105                                 if (word_end.forward_word_end ()) {
 106                                         var text = end.get_slice(word_end);
 107                                         if (text.length > word.length) {
 108                                                 return;
 109                                         }
 110                                         if (word.has_suffix (text)) {
 111                                                 //g_assert (strlen (word) >= strlen (text));
 112                                                 len = word.length - text.length;
 113                                                 end_mark = buffer.create_mark (null, word_end, false);
 114                                         }
 115                                 }
 116                         }
 117
 118                         buffer.begin_user_action();
 119                         buffer.delete (ref begin, ref end);
 120                         buffer.insert ( ref begin, word, len);
 121                         buffer.end_user_action ();
 122
 123                         if (end_mark != null)
 124                         {
 125                                 buffer.get_iter_at_mark(out end, end_mark);
 126                                 buffer.select_range(end,  end);
 127                                 buffer.delete_mark(end_mark);
 128                         }
 129
 130
 131                 }
 132
 133
 134                 public  void display (GtkSource.CompletionContext context, GtkSource.CompletionProposal proposal, GtkSource.CompletionCell cell)
 135                 {
 136                         //GLib.debug("compelte display");
 137                         var col = cell.get_column();
 138
 139                         var p = (CompletionProposal) proposal;
 140                         switch(col) {
 141                                 case GtkSource.CompletionColumn.TYPED_TEXT:
 142                                         cell.set_text(p.label);
 143                                         break;
 144                                 case GtkSource.CompletionColumn.ICON:
 145 //cell.set_icon_name("lang-define-symbolic");return;
 146 //cell.set_icon_name("lang-include-symbolic");return;
 147 //cell.set_icon_name("lang-typedef-symbolic");return;
 148 //cell.set_icon_name("lang-union-symbolic");return;
 149                                         switch (p.ci.kind) {
 150
 151                                                 case    Lsp.CompletionItemKind.Text: cell.set_icon_name("completion-snippet-symbolic");return;
 152                                                 case    Lsp.CompletionItemKind.Method: cell.set_icon_name("lang-method-symbolic");return;
 153                                                 case    Lsp.CompletionItemKind.Function: cell.set_icon_name("lang-function-symbolic");return;
 154                                                 case    Lsp.CompletionItemKind.Constructor: cell.set_icon_name("lang-method-symbolic");return;
 155                                                 case    Lsp.CompletionItemKind.Field: cell.set_icon_name("lang-struct-field-symbolic");return;
 156                                                 case    Lsp.CompletionItemKind.Variable: cell.set_icon_name("lang-variable-symbolic");return;
 157                                                 case    Lsp.CompletionItemKind.Class: cell.set_icon_name("lang-class-symbolic");return;
 158                                                 case    Lsp.CompletionItemKind.Interface: cell.set_icon_name("lang-class-symbolic");return;
 159                                                 case    Lsp.CompletionItemKind.Module: cell.set_icon_name("lang-namespace-symbolic");return;
 160                                                 case    Lsp.CompletionItemKind.Property:cell.set_icon_name("lang-struct-field-symbolic");return;
 161                                                 case    Lsp.CompletionItemKind.Unit: cell.set_icon_name("lang-variable-symbolic");return;
 162                                                 case    Lsp.CompletionItemKind.Value: cell.set_icon_name("lang-variable-symbolic");return;
 163                                                 case    Lsp.CompletionItemKind.Enum: cell.set_icon_name("lang-enum-symbolic");return;
 164                                                 case    Lsp.CompletionItemKind.Keyword: cell.set_icon_name("completion-word-symbolic");return;
 165                                                 case    Lsp.CompletionItemKind.Snippet: cell.set_icon_name("completion-snippet-symbolic");return;
 166
 167                                                 case    Lsp.CompletionItemKind.Color: cell.set_icon_name("lang-typedef-symbolic");return;
 168                                                 case    Lsp.CompletionItemKind.File:cell.set_icon_name("lang-typedef-symbolic");return;
 169                                                 case    Lsp.CompletionItemKind.Reference: cell.set_icon_name("lang-typedef-symbolic");return;
 170                                                 case    Lsp.CompletionItemKind.Folder:cell.set_icon_name("lang-typedef-symbolic");return;
 171                                                 case    Lsp.CompletionItemKind.EnumMember: cell.set_icon_name("lang-typedef-symbolic");return;
 172                                                 case    Lsp.CompletionItemKind.Constant:cell.set_icon_name("lang-typedef-symbolic");return;
 173                                                 case    Lsp.CompletionItemKind.Struct: cell.set_icon_name("lang-struct-symbolic");return;
 174                                                 case    Lsp.CompletionItemKind.Event:cell.set_icon_name("lang-typedef-symbolic");return;
 175                                                 case    Lsp.CompletionItemKind.Operator:cell.set_icon_name("lang-typedef-symbolic");return;
 176                                                 case    Lsp.CompletionItemKind.TypeParameter:cell.set_icon_name("lang-typedef-symbolic");return;
 177                                                 default:
 178
 179
 180
 181
 182                                                         cell.set_icon_name("completion-snippet-symbolic");
 183                                                         return;
 184                                                 }
 185
 186
 187                                 case  GtkSource.CompletionColumn.COMMENT:
 188                                         cell.set_text(p.text);
 189                                         break;
 190                                 case GtkSource.CompletionColumn.DETAILS:
 191                                         if (p.ci.documentation != null) {
 192                                                 cell.set_text(p.ci.documentation.value);
 193                                                 return;
 194                                         }
 195
 196                                         cell.set_text(p.text);
 197                                         break;
 198                                 default:
 199                                         cell.set_text(null);
 200                                         break;
 201                         }
 202                 }
 203
 204                 bool in_populate = false;
 205
 206                 internal  async GLib.ListModel populate_async (GtkSource.CompletionContext context, GLib.Cancellable? cancellable)
 207                 {
 208                         GLib.debug("pupoulate async");
 209                         var ret = new GLib.ListStore(typeof(CompletionProposal));
 210
 211                         if (this.in_populate) {
 212                                 GLib.debug("pupoulate async  - skipped waiting for reply");
 213                                 return ret;
 214                         }
 215                         this.in_populate = true;
 216
 217                         global::Gtk.TextIter begin, end;
 218                         Lsp.CompletionList res;
 219                         if (context.get_bounds (out begin, out end)) {
 220                                 var line = end.get_line();
 221                                 var offset =  end.get_line_offset();
 222                                 if (this.editor.prop != null) {
 223                                 //      tried line -1 (does not work)
 224                                         GLib.debug("node pad = '%s' %d", this.editor.node.node_pad, this.editor.node.node_pad.length);
 225
 226                                         line += this.editor.prop.start_line ;
 227                                         // this is based on Gtk using tabs (hence 1/2 chars);
 228                                         offset += this.editor.node.node_pad.length;
 229                                         // javascript listeners are indented 2 more spaces.
 230                                         if (this.editor.prop.ptype == JsRender.NodePropType.LISTENER) {
 231                                                 offset += 2;
 232                                         }
 233                                 }
 234                                 //  this should not really be slow, as it's a quick repsonse
 235                                 yield this.file.getLanguageServer().document_change_force(this.file, this.editor.tempFileContents());
 236                                 try {
 237                                         GLib.debug("sending request to language server %s", this.file.getLanguageServer().get_type().name());
 238
 239                                         res = yield this.file.getLanguageServer().completion(this.file, line, offset, 1);
 240                                 } catch (GLib.Error e) {
 241                                         GLib.debug("got error %s", e.message);
 242                                         this.in_populate = false;
 243                                         return ret;
 244                                 }
 245
 246                         } else {
 247                                 this.in_populate = false;
 248                                 return ret;
 249                         }
 250
 251                         GLib.debug("pupoulate async  - got reply");
 252                         this.model = new CompletionModel(this, context, res, cancellable);
 253                         var word = context.get_word();
 254                         GLib.debug("Context word is %s, %d", word, (int)word.length);
 255                         if (word.length < 1) {
 256                                 word = " "; // this should filter out everything, and prevent it displaying
 257                         }
 258
 259                         var expression = new global::Gtk.PropertyExpression(typeof(CompletionProposal), null, "label");
 260                         this.filter = new global::Gtk.StringFilter(expression);
 261                         this.filter.set_search( word);
 262                         var  filter_model = new global::Gtk.FilterListModel(this.model, this.filter);
 263                         filter.match_mode = global::Gtk.StringFilterMatchMode.PREFIX;
 264                         filter_model.set_incremental(true);
 265                         this.in_populate = false;
 266                         return filter_model;
 267
 268
 269
 270                 }
 271
 272                 internal  void refilter (GtkSource.CompletionContext context, GLib.ListModel in_model)
 273                 {
 274
 275                         //GLib.debug("pupoulate refilter");
 276                         if (this.filter == null) {
 277                                 return;
 278                         }
 279
 280                         var word = context.get_word();
 281                         this.filter.set_search(word);
 282
 283
 284                 }
 285
 286
 287 /*
 288                 public bool activate_proposal (GtkSource.CompletionProposal proposal, TextIter iter)
 289                 {
 290                         var istart = iter;
 291                         istart.backward_find_char(is_space, null);
 292                         istart.forward_char();
 293
 294                 //    var search = iter.get_text(istart);
 295
 296                         var buffer = iter.get_buffer();
 297                         buffer.delete(ref istart, ref iter);
 298                         buffer.insert(ref istart, proposal.get_text(), -1);
 299
 300                         return true;
 301                 }
 302
 303
 304
 305                 private bool is_space(unichar space){
 306                         return space.isspace() || space.to_string() == "";
 307                 }
 308                 */
 309
 310         }
 311         public class CompletionModel : Object, GLib.ListModel
 312         {
 313                 CompletionProvider provider;
 314                 Gee.ArrayList<CompletionProposal> items;
 315                 string search;
 316                 int minimum_word_size = 2;
 317
 318                 public Cancellable? cancellable;
 319
 320                 public CompletionModel(CompletionProvider provider, GtkSource.CompletionContext context, Lsp.CompletionList? res, Cancellable? cancellable)
 321                 {
 322                         this.provider = provider;
 323                         this.cancellable = cancellable;
 324                         this.items = new Gee.ArrayList<CompletionProposal>();
 325
 326                         var word = context.get_word();
 327                         GLib.debug("looking for %s", word);
 328                         this.search = word;
 329                         if (res != null) {
 330                                 foreach(var comp in res.items) {
 331                                          if (comp.label == "_") { // skip '_'
 332                                                 continue;
 333                                         }
 334                                         this.items.add(new CompletionProposal(comp));
 335
 336                                 }
 337                         }
 338                     print("GOT %d results\n", (int) items.size);
 339                         // WHY TWICE?
 340                     if (this.items.size < this.minimum_word_size) {
 341                                 return;
 342                     }
 343
 344                     items.sort((a, b) => {
 345                             return ((string)(a.label)).collate((string)(b.label));
 346                     });
 347
 348                 }
 349
 350
 351
 352                 public GLib.Object? get_item (uint pos)
 353                 {
 354                         return (Object) this.items.get((int) pos);
 355                 }
 356                 public GLib.Type  get_item_type ()
 357                 {
 358                         return typeof(GtkSource.CompletionProposal);
 359                 }
 360                 public   uint get_n_items ()
 361                 {
 362                         return this.items.size;
 363                 }
 364                 public bool can_filter (string word)
 365                 {
 366                         if (word == null || word[0] == 0) {
 367                                 return false;
 368                         }
 369
 370                         if (word.length < this.minimum_word_size) {
 371                                 return false;
 372                         }
 373
 374                         /* If the new word starts with our initial word, then we can simply
 375                          * refilter outside this model using a GtkFilterListModel.
 376                          */
 377
 378                          return word.has_prefix(this.search);
 379                 }
 380                 public void  cancel ()
 381                 {
 382                         if (this.cancellable != null) {
 383                                 this.cancellable.cancel();
 384                         }
 385                 }
 386
 387
 388
 389         }
 390         public class CompletionProposal : Object, GtkSource.CompletionProposal
 391         {
 392
 393                 public string label { get; set; default = ""; }
 394
 395                 public string text  { get; set; default = ""; }
 396                 public string info  { get; set; default = ""; }
 397
 398                 public Lsp.CompletionItem ci;
 399
 400                 public CompletionProposal(Lsp.CompletionItem ci) //string label, string text, string info)
 401                 {
 402
 403                         this.ci = ci;
 404                         this.text = ci.detail == null ? "" : ci.detail ;
 405                         this.label = ci.label;
 406                         this.info = ci.documentation == null ? "": ci.documentation.value;
 407                         //GLib.debug("SET: detail =%s, label = %s; info =%s", ci.detail, ci.label, "to long..");
 408                 }
 409
 410         }
 411
 412 }
 413