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