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