git.roojs.org Git - app.Builder.js/blob - old-javascript/Builder4/WindowLeftTree.vala

   1 static Xcls_WindowLeftTree  _WindowLeftTree;
   2
   3 public class Xcls_WindowLeftTree : Object
   4 {
   5     public Gtk.ScrolledWindow el;
   6     private Xcls_WindowLeftTree  _this;
   7
   8     public static Xcls_WindowLeftTree singleton()
   9     {
  10         if (_WindowLeftTree == null) {
  11             _WindowLeftTree= new Xcls_WindowLeftTree();
  12         }
  13         return _WindowLeftTree;
  14     }
  15     public Xcls_view view;
  16     public Xcls_model model;
  17     public Xcls_renderer renderer;
  18     public Xcls_LeftTreeMenu LeftTreeMenu;
  19
  20         // my vars (def)
  21     public signal bool before_node_change (JsRender.Node? node);
  22     public signal void changed ();
  23     public signal void node_selected (JsRender.Node? node);
  24     public Xcls_MainWindow main_window;
  25
  26     // ctor
  27     public Xcls_WindowLeftTree()
  28     {
  29         _this = this;
  30         this.el = new Gtk.ScrolledWindow( null, null );
  31
  32         // my vars (dec)
  33         this.main_window = null;
  34
  35         // set gobject values
  36         this.el.shadow_type = Gtk.ShadowType.IN;
  37         var child_0 = new Xcls_view( _this );
  38         child_0.ref();
  39         this.el.add (  child_0.el  );
  40         var child_1 = new Xcls_LeftTreeMenu( _this );
  41         child_1.ref();
  42
  43         // init method
  44
  45         this.el.set_policy (Gtk.PolicyType.AUTOMATIC, Gtk.PolicyType.AUTOMATIC);    }
  46
  47     // user defined functions
  48     public           JsRender.Node? getActiveElement () { // return path to actie node.
  49
  50          var path = this.getActivePath();
  51          if (path.length < 1) {
  52             return null;
  53          }
  54          return _this.model.pathToNode(path);
  55
  56     }
  57     public           JsRender.JsRender getActiveFile () {
  58         return this.model.file;
  59     }
  60     public           string getActivePath () {
  61         var model = this.model;
  62         var view = this.view.el;
  63         if (view.get_selection().count_selected_rows() < 1) {
  64             return "";
  65         }
  66         Gtk.TreeIter iter;
  67         Gtk.TreeModel mod;
  68         view.get_selection().get_selected(out mod, out iter);
  69         return mod.get_path(iter).to_string();
  70     }
  71     public class Xcls_view : Object
  72     {
  73         public Gtk.TreeView el;
  74         private Xcls_WindowLeftTree  _this;
  75
  76
  77             // my vars (def)
  78         public string dragData;
  79         public int drag_x;
  80         public string[] dropList;
  81         public int drag_y;
  82         public bool drag_in_motion;
  83         public bool blockChanges;
  84
  85         // ctor
  86         public Xcls_view(Xcls_WindowLeftTree _owner )
  87         {
  88             _this = _owner;
  89             _this.view = this;
  90             this.el = new Gtk.TreeView();
  91
  92             // my vars (dec)
  93             this.blockChanges = false;
  94
  95             // set gobject values
  96             this.el.tooltip_column = 1;
  97             this.el.enable_tree_lines = true;
  98             this.el.headers_visible = false;
  99             var child_0 = new Xcls_model( _this );
 100             child_0.ref();
 101             this.el.set_model (  child_0.el  );
 102             var child_1 = new Xcls_TreeViewColumn4( _this );
 103             child_1.ref();
 104             this.el.append_column (  child_1.el  );
 105
 106             // init method
 107
 108             {
 109                 var description = new Pango.FontDescription();
 110                 description.set_size(8000);
 111                 this.el.modify_font(description);
 112
 113                 var selection = this.el.get_selection();
 114                 selection.set_mode( Gtk.SelectionMode.SINGLE);
 115
 116
 117                 // is this really needed??
 118                 /*
 119                 this.selection.signal['changed'].connect(function() {
 120                     _this.get('/LeftTree.view').listeners.cursor_changed.apply(
 121                         _this.get('/LeftTree.view'), [ _this.get('/LeftTree.view'), '']
 122                     );
 123                 });
 124                 */
 125                 Gtk.drag_source_set (
 126                     this.el,            /* widget will be drag-able */
 127                     Gdk.ModifierType.BUTTON1_MASK,       /* modifier that will start a drag */
 128                     Builder4.Application.targetList,            /* lists of target to support */
 129                     Gdk.DragAction.COPY   | Gdk.DragAction.MOVE    |  Gdk.DragAction.LINK           /* what to do with data after dropped */
 130                 );
 131
 132                 // ?? needed??
 133                 //Gtk.drag_source_add_text_targets(this.el);
 134
 135                 Gtk.drag_dest_set
 136                 (
 137                     this.el,              /* widget that will accept a drop */
 138                     Gtk.DestDefaults.MOTION  | Gtk.DestDefaults.HIGHLIGHT,
 139                     Builder4.Application.targetList,            /* lists of target to support */
 140                     Gdk.DragAction.COPY   | Gdk.DragAction.MOVE   | Gdk.DragAction.LINK     /* what to do with data after dropped */
 141                 );
 142
 143                 //Gtk.drag_dest_set_target_list(this.el, Builder.Application.targetList);
 144                 //Gtk.drag_dest_add_text_targets(this.el);
 145             }
 146             // listeners
 147             this.el.button_press_event.connect( ( ev) => {
 148                 //console.log("button press?");
 149                 if (! _this.before_node_change(null) ) {
 150                    return true;
 151                 }
 152
 153
 154                 if (ev.type != Gdk.EventType.BUTTON_PRESS  || ev.button != 3) {
 155                     //print("click" + ev.type);
 156                     return false;
 157                 }
 158                 Gtk.TreePath res;
 159                 if (!_this.view.el.get_path_at_pos((int)ev.x,(int)ev.y, out res, null, null, null) ) {
 160                     return true;
 161                 }
 162
 163                 this.el.get_selection().select_path(res);
 164
 165                   //if (!this.get('/LeftTreeMenu').el)  {
 166                   //      this.get('/LeftTreeMenu').init();
 167                   //  }
 168
 169                  _this.LeftTreeMenu.el.set_screen(Gdk.Screen.get_default());
 170                  _this.LeftTreeMenu.el.show_all();
 171                   _this.LeftTreeMenu.el.popup(null, null, null,  3, ev.time);
 172                  //   print("click:" + res.path.to_string());
 173                   return true;
 174             });
 175             this.el.drag_begin.connect( ( ctx)  => {
 176                 //print('SOURCE: drag-begin');
 177
 178
 179                     //this.targetData = "";
 180
 181                     // find what is selected in our tree...
 182
 183                     var s = _this.view.el.get_selection();
 184                     if (s.count_selected_rows() < 1) {
 185                         return;
 186                     }
 187                     Gtk.TreeIter iter;
 188                     Gtk.TreeModel mod;
 189                     s.get_selected(out mod, out iter);
 190
 191
 192
 193                     // set some properties of the tree for use by the dropped element.
 194                     GLib.Value value;
 195                     _this.model.el.get_value(iter, 2, out value);
 196                     var tp = mod.get_path(iter).to_string();
 197                     var data = (JsRender.Node)(value.dup_object());
 198                     var xname = data.fqn();
 199                     print ("XNAME  IS " + xname+ "\n");
 200                     this.dragData = tp;
 201                     this.dropList = _this.model.file.palete().getDropList(xname);
 202
 203                     print ("DROP LIST IS " + string.joinv(", ", this.dropList) + "\n");
 204
 205
 206                     // make the drag icon a picture of the node that was selected
 207
 208
 209                 // by default returns the path..
 210                    var path = _this.model.el.get_path(iter);
 211
 212
 213                     var pix = this.el.create_row_drag_icon ( path);
 214
 215                     Gtk.drag_set_icon_surface (ctx, pix) ;
 216
 217                     return;
 218             });
 219             this.el.cursor_changed.connect( ( ) => {
 220
 221
 222                  if (this.blockChanges) { // probably not needed..
 223                    return  ;
 224                  }
 225                   if (!_this.before_node_change(null) ) {
 226                      this.blockChanges = true;
 227                      this.el.get_selection().unselect_all();
 228                      this.blockChanges = false;
 229                      return;
 230                  }
 231                  if (_this.model.file == null) {
 232                      return;
 233                  }
 234
 235                  //var render = this.get('/LeftTree').getRenderer();
 236                 print("LEFT TREE -> view -> selection changed called\n");
 237
 238
 239                 // -- it appears that the selection is not updated.
 240
 241                 GLib.Timeout.add_full(GLib.Priority.DEFAULT,10 , () => {
 242
 243
 244                         if (this.el.get_selection().count_selected_rows() < 1) {
 245
 246                             print("selected rows < 1\n");
 247                             //??this.model.load( false);
 248                             _this.node_selected(null);
 249
 250                             return false ;
 251                         }
 252
 253                             //console.log('changed');
 254                         var s = this.el.get_selection();
 255                          Gtk.TreeIter iter;
 256                          Gtk.TreeModel mod;
 257                         s.get_selected(out mod, out iter);
 258
 259
 260                         // var val = "";
 261                         GLib.Value value;
 262                         _this.model.el.get_value(iter, 2, out value);
 263                         _this.model.activePath = mod.get_path(iter).to_string();
 264
 265                         var node = (JsRender.Node)value.dup_object();
 266                         _this.node_selected(node);
 267                         return false;
 268                   });
 269                 //_this.after_node_change(node);
 270
 271             //        _this.model.file.changed(node, "tree");
 272
 273                 //Seed.print( value.get_string());
 274                 return  ;
 275
 276             });
 277             this.el.drag_end.connect( (drag_context) => {
 278                 //Seed.print('LEFT-TREE: drag-end');
 279                     this.dragData = "";
 280                     this.dropList = null;
 281             //        this.targetData = "";
 282                     this.highlightDropPath("",0);
 283             //        return true;
 284             });
 285             this.el.drag_motion.connect( ( ctx, x, y, time)  => {
 286                print("got drag motion\n");
 287                 var src = Gtk.drag_get_source_widget(ctx);
 288                this.drag_x = x;
 289                this.drag_y = y;
 290
 291                if (src != this.el) {
 292
 293
 294
 295                 // the point of this is to detect where an item could be dropped..
 296                     print("requesting drag data\n");
 297                    this.drag_in_motion = true;
 298
 299                         // request data that will be recieved by the recieve...
 300                     Gtk.drag_get_data
 301                     (
 302                             this.el,         // will receive 'drag-data-received' signal
 303                             ctx,        // represents the current state of the DnD
 304                             Gdk.Atom.intern("STRING",true),    // the target type we want
 305                             time            // time stamp
 306                     );
 307                     return true;
 308               }
 309
 310
 311               print("action: %d\n", ctx.get_actions());
 312              //print("GETTING POS");
 313                 var  targetData = "";
 314
 315                 Gtk.TreePath path;
 316                 Gtk.TreeViewDropPosition pos;
 317                 var isOver = _this.view.el.get_dest_row_at_pos(this.drag_x,this.drag_y, out path, out pos);
 318
 319                 // if there are not items in the tree.. the we have to set isOver to true for anything..
 320                 var isEmpty = false;
 321                 if (_this.model.el.iter_n_children(null) < 1) {
 322                     print("got NO children?\n");
 323                     isOver = true; //???
 324                     isEmpty = true;
 325                     pos = Gtk.TreeViewDropPosition.INTO_OR_AFTER;
 326                 }
 327
 328
 329                 // ------------- a drag from self..
 330
 331
 332                 //var action = Gdk.DragAction.COPY;
 333                     // unless we are copying!!! ctl button..
 334
 335                 var action = (ctx.get_actions() & Gdk.DragAction.MOVE) > 0 ?
 336                              Gdk.DragAction.COPY  : Gdk.DragAction.MOVE ;
 337                             // Gdk.DragAction.MOVE : Gdk.DragAction.COPY ;
 338
 339
 340                 if (_this.model.el.iter_n_children(null) < 1) {
 341                     // no children.. -- asume it's ok..
 342
 343                     targetData = "|%d|".printf((int)Gtk.TreeViewDropPosition.INTO_OR_AFTER);
 344
 345                     this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 346                     Gdk.drag_status(ctx, action ,time);
 347                     return true;
 348
 349                     // continue through to allow drop...
 350
 351                 }
 352
 353
 354
 355
 356
 357                 //print("ISOVER? " + isOver);
 358                 if (!isOver) {
 359
 360                     Gdk.drag_status(ctx, 0 ,time);
 361                      this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 362                      return false;
 363
 364                 }
 365
 366                 // drag node is parent of child..
 367                 //console.log("SRC TREEPATH: " + src.treepath);
 368                 //console.log("TARGET TREEPATH: " + data.path.to_string());
 369
 370                 // nned to check a  few here..
 371                 //Gtk.TreeViewDropPosition.INTO_OR_AFTER
 372                 //Gtk.TreeViewDropPosition.INTO_OR_BEFORE
 373                 //Gtk.TreeViewDropPosition.AFTER
 374                 //Gtk.TreeViewDropPosition.BEFORE
 375
 376                 // locally dragged items to not really use the
 377                 var selection_text = this.dragData;
 378
 379
 380
 381                 if (selection_text == null || selection_text.length < 1) {
 382                             //print("Error  - drag selection text returned NULL");
 383                          Gdk.drag_status(ctx, 0 ,time);
 384                         this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 385                          return false;
 386                  }
 387
 388
 389                         // see if we are dragging into ourself?
 390                 var target_path = path.to_string();
 391                 print ("Drag  %s onto %s--%d\n ", selection_text, target_path, pos);
 392
 393                 // pos : 3 = ontop - 0 = after, 1 = before
 394                 //print("target_path="+target_path);
 395
 396                 //
 397                 if (selection_text  == target_path) {
 398                     print("self drag ?? == we should perhaps allow copy onto self..\n");
 399
 400                      Gdk.drag_status(ctx, 0 ,time);
 401                       this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 402                       return false;
 403             //                 -- fixme -- this is not really correct..
 404
 405                 }
 406
 407                 // check that
 408                 //print("DUMPING DATA");
 409                 //console.dump(data);
 410                 // path, pos
 411
 412                 //print(data.path.to_string() +' => '+  data.pos);
 413
 414                 // dropList is a list of xtypes that this node could be dropped on.
 415                 // it is set up when we start to drag..
 416
 417
 418                 targetData = _this.model.findDropNodeByPath( path.to_string(), this.dropList, pos);
 419
 420                 print("targetDAta: " + targetData +"\n");
 421
 422                 if (targetData.length < 1) {
 423                     //print("Can not find drop node path");
 424
 425                     Gdk.drag_status(ctx, 0, time);
 426                     this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 427                     return false;
 428                 }
 429
 430                 var td_ar = targetData.split("|");
 431
 432
 433
 434                 Gdk.drag_status(ctx, action ,time);
 435                 this.highlightDropPath(td_ar[0], (Gtk.TreeViewDropPosition)int.parse(td_ar[1]));
 436                 return true;
 437
 438
 439             });
 440             this.el.drag_data_get.connect( ( drag_context, data, info, time) => {
 441
 442
 443                              //print("drag-data-get");
 444                              var s = this.el.get_selection();
 445                              if (s.count_selected_rows() < 1) {
 446                                     data.set_text("",0);
 447                                      print("return empty string - no selection..");
 448                                     return;
 449                                 }
 450
 451                              Gtk.TreeIter iter;
 452                              Gtk.TreeModel mod;
 453
 454                              s.get_selected(out mod, out iter);
 455
 456
 457
 458                              GLib.Value value;
 459                              _this.model.el.get_value(iter, 2, out value);
 460                              var ndata = (JsRender.Node)(value.dup_object());
 461                              var xname = ndata.fqn();
 462
 463
 464                             var tp = mod.get_path(iter).to_string();
 465                             // by default returns the path..
 466
 467                            if ( info != Gdk.Atom.intern("STRING",true) ) {
 468                                 tp = ndata.toJsonString();
 469                            }
 470
 471                            //data.set_text(tp,tp.length);
 472
 473                             data.set (data.get_target (), 8, (uchar[]) tp.to_utf8 ());
 474
 475
 476                            //  print("return " + tp);
 477                         });
 478             this.el.drag_data_received.connect( (ctx, x, y, sel, info, time)  => {
 479
 480                     // THIS CODE ONLY RELATES TO drag  or drop of "NEW" elements or "FROM another tree.."
 481
 482
 483                     //  print("Tree: drag-data-received\n");
 484                     var selection_text = (string)sel.get_data();
 485                     //print("selection_text= %s\n",selection_text);
 486
 487                     var is_drag = this.drag_in_motion;
 488
 489
 490
 491                     print("Is Drag %s\n", is_drag ? "Y": "N");
 492                     var  targetData = "";
 493
 494                     Gtk.TreePath path;
 495                     Gtk.TreeViewDropPosition pos;
 496                     var isOver = _this.view.el.get_dest_row_at_pos(this.drag_x,this.drag_y, out path, out pos);
 497
 498                     // if there are not items in the tree.. the we have to set isOver to true for anything..
 499                     var isEmpty = false;
 500                     if (_this.model.el.iter_n_children(null) < 1) {
 501                         print("got NO children?\n");
 502                         isOver = true; //???
 503                         isEmpty = true;
 504                         pos = Gtk.TreeViewDropPosition.INTO_OR_AFTER;
 505                     }
 506
 507
 508                     //console.log("LEFT-TREE: drag-motion");
 509                     var src = Gtk.drag_get_source_widget(ctx);
 510
 511                     // a drag from self - this should be handled by drop and motion.
 512                     if (src == this.el) {
 513                         print("Source == this element should not happen.. ? \n");
 514                         return;
 515                     }
 516                     //print("drag_data_recieved from another element");
 517
 518
 519
 520
 521                     if (selection_text == null || selection_text.length < 1 || !isOver) {
 522                         // nothing valid foudn to drop...
 523                            print("empty sel text or not over");
 524                         if (is_drag) {
 525                             Gdk.drag_status(ctx, 0, time);
 526                             this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 527                             return;
 528                         }
 529                         Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 530                         // no drop action...
 531                         return;
 532
 533                     }
 534                     var dropNode = new JsRender.Node();
 535
 536                     var dropNodeType  = selection_text;
 537                     var show_templates = true;
 538                     // for drop
 539                     if (dropNodeType[0] == '{') {
 540                         var pa = new Json.Parser();
 541                         pa.load_from_data(dropNodeType);
 542
 543                         dropNode.loadFromJson( pa.get_root().get_object(), 2);
 544                         dropNodeType = dropNode.fqn();
 545                         show_templates = false;
 546
 547
 548                     } else {
 549
 550                         dropNode.setFqn(selection_text);
 551                     }
 552
 553
 554                     // dropList --- need to gather this ...
 555                     print("get dropList for : %s\n",dropNodeType);
 556                     var dropList = _this.model.file.palete().getDropList(dropNodeType);
 557
 558                     print("dropList: %s\n", string.joinv(" , ", dropList));
 559
 560                     // if drag action is link ... then we can drop it anywahere...
 561                      if ((ctx.get_actions() & Gdk.DragAction.LINK) > 0) {
 562                              targetData = path.to_string() + "|%d".printf((int)pos);
 563                      } else {
 564
 565
 566                         targetData = _this.model.findDropNodeByPath( isEmpty ? "" : path.to_string(), dropList, pos);
 567                     }
 568
 569
 570
 571                     print("targetDAta: " + targetData +"\n");
 572
 573                     if (targetData.length < 1) {
 574
 575                         // invalid drop path..
 576                         if (this.drag_in_motion) {
 577                             Gdk.drag_status(ctx, 0, time);
 578                             this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 579                             return;
 580                         }
 581                         Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 582                         // no drop action...
 583                         return;
 584                     }
 585                     // valid drop path..
 586
 587                       var td_ar = targetData.split("|");
 588
 589
 590                     if (this.drag_in_motion) {
 591                         Gdk.drag_status(ctx, Gdk.DragAction.COPY ,time);
 592
 593                         this.highlightDropPath(  td_ar[0]  , (Gtk.TreeViewDropPosition)int.parse(td_ar[1]));
 594                         return;
 595                     }
 596                     // continue on to allow drop..
 597
 598
 599                     // at this point, drag is not in motion... -- as checked above... - so it's a real drop event..
 600
 601
 602                     _this.model.dropNode(targetData, dropNode, show_templates);
 603                     print("ADD new node!!!\n");
 604
 605                     ///Xcls_DialogTemplateSelect.singleton().show( _this.model.file.palete(), node);
 606
 607                     Gtk.drag_finish (ctx, false, false,time);
 608
 609
 610
 611
 612
 613             });
 614             this.el.drag_drop.connect( (  ctx, x, y, time)  => {
 615                   //Seed.print("TARGET: drag-drop");
 616
 617
 618                 var src = Gtk.drag_get_source_widget(ctx);
 619
 620                if (src != this.el) {
 621
 622
 623
 624                    this.drag_in_motion = false;
 625                         // request data that will be recieved by the recieve...
 626                     Gtk.drag_get_data
 627                     (
 628                             this.el,         // will receive 'drag-data-received' signal
 629                             ctx,        // represents the current state of the DnD
 630                             Gdk.Atom.intern("application/json",true),    // the target type we want
 631                             time            // time stamp
 632                     );
 633
 634
 635                     // No target offered by source => error
 636
 637
 638                      return  false;
 639                  }
 640
 641                  // handle drop around self..
 642
 643
 644
 645                 //print("GETTING POS");
 646                 var  targetData = "";
 647
 648                 Gtk.TreePath path;
 649                 Gtk.TreeViewDropPosition pos;
 650                 var isOver = _this.view.el.get_dest_row_at_pos(this.drag_x,this.drag_y, out path, out pos);
 651
 652                 // if there are not items in the tree.. the we have to set isOver to true for anything..
 653                 var isEmpty = false;
 654                 if (_this.model.el.iter_n_children(null) < 1) {
 655                     print("got NO children?\n");
 656                     isOver = true; //???
 657                     isEmpty = true;
 658                     pos = Gtk.TreeViewDropPosition.INTO_OR_AFTER;
 659                 }
 660
 661
 662
 663                 //var action = Gdk.DragAction.COPY;
 664                     // unless we are copying!!! ctl button..
 665
 666                 var action = (ctx.get_actions() & Gdk.DragAction.MOVE) > 0 ?
 667                              Gdk.DragAction.COPY  : Gdk.DragAction.MOVE ;
 668                             // Gdk.DragAction.MOVE : Gdk.DragAction.COPY ;
 669
 670
 671                 if (_this.model.el.iter_n_children(null) < 1) {
 672                     // no children.. -- asume it's ok..
 673
 674                     targetData = "|%d|".printf((int)Gtk.TreeViewDropPosition.INTO_OR_AFTER);
 675
 676                     // continue through to allow drop...
 677
 678                 } else {
 679
 680
 681
 682
 683
 684                             //print("ISOVER? " + isOver);
 685                     if (!isOver) {
 686
 687                         Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 688                         return true; // not over apoint!?! - no action on drop or motion..
 689                     }
 690
 691                     // drag node is parent of child..
 692                     //console.log("SRC TREEPATH: " + src.treepath);
 693                     //console.log("TARGET TREEPATH: " + data.path.to_string());
 694
 695                     // nned to check a  few here..
 696                     //Gtk.TreeViewDropPosition.INTO_OR_AFTER
 697                     //Gtk.TreeViewDropPosition.INTO_OR_BEFORE
 698                     //Gtk.TreeViewDropPosition.AFTER
 699                     //Gtk.TreeViewDropPosition.BEFORE
 700
 701                     // locally dragged items to not really use the
 702                     var selection_text = this.dragData;
 703
 704
 705
 706                     if (selection_text == null || selection_text.length < 1) {
 707                         //print("Error  - drag selection text returned NULL");
 708
 709                          Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 710                          return true; /// -- fixme -- this is not really correct..
 711                     }
 712
 713                             // see if we are dragging into ourself?
 714                             print ("got selection text of  " + selection_text);
 715
 716                     var target_path = path.to_string();
 717                     //print("target_path="+target_path);
 718
 719                     //
 720                     if (selection_text  == target_path) {
 721                         print("self drag ?? == we should perhaps allow copy onto self..\n");
 722
 723                          Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 724
 725                          return true; /// -- fixme -- this is not really correct..
 726
 727                     }
 728
 729                     // check that
 730                     //print("DUMPING DATA");
 731                     //console.dump(data);
 732                     // path, pos
 733
 734                     //print(data.path.to_string() +' => '+  data.pos);
 735
 736                     // dropList is a list of xtypes that this node could be dropped on.
 737                     // it is set up when we start to drag..
 738
 739
 740                     targetData = _this.model.findDropNodeByPath( path.to_string(), this.dropList, pos);
 741
 742                     print("targetDAta: " + targetData +"\n");
 743
 744                     if (targetData.length < 1) {
 745                         //print("Can not find drop node path");
 746
 747                         Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 748                         return true;
 749                     }
 750
 751                     var td_ar = targetData.split("|");
 752
 753
 754
 755                             // continue on to allow drop..
 756               }
 757                     // at this point, drag is not in motion... -- as checked above... - so it's a real drop event..
 758
 759
 760                  var delete_selection_data = false;
 761
 762                 if (action == Gdk.DragAction.ASK)  {
 763                     /* Ask the user to move or copy, then set the ctx action. */
 764                 }
 765
 766                 if (action == Gdk.DragAction.MOVE) {
 767                     delete_selection_data = true;
 768                 }
 769
 770                             // drag around.. - reorder..
 771                 _this.model.moveNode(targetData, action);
 772
 773
 774
 775
 776
 777                     // we can send stuff to souce here...
 778
 779
 780             // do we always say failure, so we handle the reall drop?
 781                 Gtk.drag_finish (ctx, false, false,time); //delete_selection_data, time);
 782
 783                 return true;
 784
 785
 786
 787
 788
 789
 790             });
 791         }
 792
 793         // user defined functions
 794         public           void highlightDropPath ( string treepath, Gtk.TreeViewDropPosition pos) {
 795
 796                 // highlighting for drag/drop
 797                 if (treepath.length > 0) {
 798                     this.el.set_drag_dest_row(  new  Gtk.TreePath.from_string( treepath ), pos);
 799                   } else {
 800                     this.el.set_drag_dest_row(null, Gtk.TreeViewDropPosition.INTO_OR_AFTER);
 801                  }
 802
 803         }
 804         public           void selectNode (string treepath_str) {
 805             //this.selection.select_path(new  Gtk.TreePath.from_string( treepath_str));
 806              var tp = new Gtk.TreePath.from_string(treepath_str);
 807
 808              this.el.set_cursor(tp, null, false);
 809              this.el.scroll_to_cell(tp, null, false, 0,0);
 810         }
 811     }
 812     public class Xcls_model : Object
 813     {
 814         public Gtk.TreeStore el;
 815         private Xcls_WindowLeftTree  _this;
 816
 817
 818             // my vars (def)
 819         public DialogTemplateSelect template_select;
 820         public JsRender.JsRender? file;
 821         public string activePath;
 822         public Project.Project? project;
 823
 824         // ctor
 825         public Xcls_model(Xcls_WindowLeftTree _owner )
 826         {
 827             _this = _owner;
 828             _this.model = this;
 829             this.el = new Gtk.TreeStore( 3, typeof(string),typeof(string),typeof(Object) );
 830
 831             // my vars (dec)
 832             this.template_select = null;
 833             this.file = null;
 834             this.activePath = "";
 835             this.project = null;
 836
 837             // set gobject values
 838
 839             // init method
 840
 841             print("model initialized");        }
 842
 843         // user defined functions
 844         public           string findDropNode (string treepath_str, string[] targets) {
 845
 846             // this is used by the dragdrop code in the roo version AFAIR..
 847
 848             //var path = treepath_str.replace(/^builder-/, '');
 849             // treemap is depreciated... - should really check if model has any entries..
 850
 851             if (this.el.iter_n_children(null) < 1) {
 852                 //print("NO KEYS");
 853                 return "|%d".printf((int)Gtk.TreeViewDropPosition.INTO_OR_AFTER);
 854             }
 855             //print("FIND treepath: " + path);
 856             //console.dump(this.treemap);
 857
 858             //if (!treepath_str.match(/^builder-/)) {
 859             //    return []; // nothing!
 860             //}
 861             if (targets.length > 0 && targets[0] == "*") {
 862                 return  treepath_str;
 863             }
 864             return this.findDropNodeByPath(treepath_str,targets, -1);
 865         }
 866         public           void loadFile (JsRender.JsRender f) {
 867             //console.dump(f);
 868             this.el.clear();
 869             this.file = f;
 870
 871
 872         //    if (!f) {
 873         //        console.log('missing file');
 874         //        return;
 875         //    }
 876
 877             // load the file if not loaded..
 878             if (f.tree == null) {
 879                 f.loadItems( );
 880             }
 881             // if it's still null?
 882             if (f.tree == null) {
 883                 return;
 884             }
 885
 886             /// this.get('/Window').setTitle(f.project.getName() + ' - ' + f.name);
 887
 888             //if (f.items.length && typeof(f.items[0]) == 'string') {
 889
 890                 //this.get('/RightEditor').el.show();
 891                 //this.get('/RightEditor.view').load( f.items[0]);
 892             //    return;
 893             //}
 894             //print("LOAD");
 895             //print(JSON.stringify(f.items, null,4));
 896             //console.dump(f.items);
 897             var o = new Gee.ArrayList<JsRender.Node>();
 898             o.add(f.tree);
 899             this.load(o,null);
 900
 901             _this.view.el.expand_all();
 902
 903             if (f.tree.items.size < 1) {
 904                 // single item..
 905
 906                 //this.get('/Window.leftvpaned').el.set_position(80);
 907                 // select first...
 908                 _this.view.el.set_cursor(
 909                     new  Gtk.TreePath.from_string("0"), null, false);
 910
 911
 912             } else {
 913                   //this.get('/Window.leftvpaned').el.set_position(200);
 914             }
 915
 916             return;
 917             /*
 918
 919             //print("hide right editior");
 920             //this.get('/RightEditor').el.hide();
 921             //this.get('/Editor').el.hide();
 922             //print("set current tree");
 923             //this.currentTree = this.toJS(false, false)[0];
 924             //console.dump(this.currentTree);
 925             //this.currentTree = this.currentTree || { items: [] };
 926             //_this.renderView();
 927             //console.dump(this.map);
 928             //var RightPalete     = imports.Builder.RightPalete.RightPalete;
 929
 930
 931             var pm = this.get('/RightPalete.model');
 932             // set up provider..
 933
 934             this.get('/RightPalete').provider = this.get('/LeftTree').getPaleteProvider();
 935
 936             if (!this.get('/RightPalete').provider) {
 937                 print ("********* PALETE PROVIDER MISSING?!!");
 938             }
 939             this.get('/LeftTree').renderView();
 940
 941             pm.load( this.get('/LeftTree').getPaleteProvider().gatherList(this.listAllTypes()));
 942
 943
 944
 945             this.get('/Window.view-notebook').el.set_current_page(
 946                 this.get('/LeftTree.model').file.getType()== 'Roo' ? 0 : -1);
 947                 */
 948
 949         }
 950         public    void updateSelected () {
 951
 952
 953             var s = _this.view.el.get_selection();
 954
 955              Gtk.TreeIter iter;
 956             Gtk.TreeModel mod;
 957
 958
 959
 960             if (!s.get_selected(out mod, out iter)) {
 961                 return; // nothing seleted..
 962             }
 963
 964           GLib.Value value;
 965             this.el.get_value(iter, 2, out value);
 966             var node = (JsRender.Node)(value.get_object());
 967
 968               this.el.set(iter, 0, node.nodeTitle(),
 969                         1, node.nodeTip(), -1
 970                 );
 971         }
 972         public           string findDropNodeByPath (string treepath_str, string[] targets, int in_pref = -1) {
 973
 974             var path = treepath_str; // dupe it..
 975
 976
 977             // pref : 3 = ontop - 0 = after, 1 = before
 978             int pref = in_pref < 0  ?  Gtk.TreeViewDropPosition.INTO_OR_AFTER : in_pref;
 979
 980             var last = "";
 981
 982             //console.dump(this.treemap);
 983
 984             print("findDropNodeByPath : got path length %d / %s\n", path.length, path);
 985
 986             if (path.length == 0) {
 987                 // top drop. // just return empty..
 988                 return "|%d".printf((int)pref) ;
 989
 990             }
 991
 992
 993             while (path.length > 0) {
 994
 995                 if (path.length == treepath_str.length && pref != Gtk.TreeViewDropPosition.INTO_OR_AFTER) {
 996                     if (path.last_index_of(":") < 0 ) {
 997                         return "";
 998                     }
 999                     path = path.substring(0, path.last_index_of(":"));
1000                     last = treepath_str;
1001                     print("DROP  before or after : using %s\n",path);
1002                     continue;
1003                 }
1004
1005                 //print("LOOKING FOR PATH: " + path);
1006                 var node_data = this.pathToNode(path);
1007
1008                 if (node_data == null) {
1009                     print("node not found");
1010                     return "";
1011                 }
1012
1013                 var xname = node_data.fqn();
1014                 var match = "";
1015                 var prop = "";
1016
1017                 for (var i =0; i < targets.length; i++)  {
1018                     var tg = targets[i];
1019                     if ((tg == xname)  ) {
1020                         match = tg;
1021                         break;
1022                     }
1023                     // if target is "xxxx:name"
1024                     if (tg.contains(xname +":")) {
1025                         match = tg;
1026                         var ar = tg.split(":");
1027                         prop = ar[1];
1028                         break;
1029                     }
1030                 }
1031
1032                 if (match.length > 0) {
1033                     if (last.length > 0) { // pref is after/before..
1034                         // then it's after last
1035                         //if (pref > 1) {
1036                         //    return "";
1037                         //}
1038                         return last + "|%d".printf((int)pref) + "|" + prop;
1039
1040
1041                     }
1042                     return path + "|%d".printf( (int) Gtk.TreeViewDropPosition.INTO_OR_AFTER);// + "|" + prop;
1043                 }
1044                 /*
1045                 last = "" + path;
1046                 var par = path.split(":");
1047                 string [] ppar = {};
1048                 for (var i = 0; i < par.length-1; i++) {
1049                     ppar += par[i];
1050                 }
1051
1052                 path = string.joinv(":", ppar);
1053                 */
1054                 break;
1055
1056             }
1057
1058             return "";
1059
1060         }
1061         public           void moveNode (string target_data, Gdk.DragAction action)
1062         {
1063
1064            /// target_data = "path|pos");
1065
1066
1067             //print("MOVE NODE");
1068             // console.dump(target_data);
1069             Gtk.TreeIter old_iter;
1070             Gtk.TreeModel mod;
1071
1072             var s = _this.view.el.get_selection();
1073             s.get_selected(out mod , out old_iter);
1074             mod.get_path(old_iter);
1075
1076             var node = this.pathToNode(mod.get_path(old_iter).to_string());
1077             //console.dump(node);
1078             if (node == null) {
1079                 print("moveNode: ERROR - node is null?");
1080             }
1081
1082
1083
1084             // needs to drop first, otherwise the target_data
1085             // treepath will be invalid.
1086
1087
1088             if ((action & Gdk.DragAction.MOVE) > 0) {
1089                     print("REMOVING OLD NODE : " + target_data + "\n");
1090                     node.remove();
1091                     this.dropNode(target_data, node, false);
1092                     this.el.remove(ref old_iter);
1093
1094
1095
1096             } else {
1097                 print("DROPPING NODE // copy: " + target_data + "\n");
1098                 node = node.deepClone();
1099                 this.dropNode(target_data, node, false);
1100             }
1101             _this.changed();
1102             this.activePath= "";
1103             //this.updateNode(false,true);
1104         }
1105         public           void load (Gee.ArrayList<JsRender.Node> tr, Gtk.TreeIter? iter)
1106         {
1107             Gtk.TreeIter citer;
1108             //this.insert(citer,iter,0);
1109             for(var i =0 ; i < tr.size; i++) {
1110                 if (iter != null) {
1111                     this.el.insert(out citer,iter,-1); // why not append?
1112                 } else {
1113                     this.el.append(out citer,null);
1114                 }
1115
1116                 this.el.set(citer, 0, tr.get(i).nodeTitle(),
1117                         1, tr.get(i).nodeTip(), -1
1118                 );
1119                 var o = new GLib.Value(typeof(Object));
1120                 o.set_object((Object)tr.get(i));
1121
1122                 this.el.set_value(citer, 2, o);
1123
1124                 if (tr.get(i).items.size > 0) {
1125                     this.load(tr.get(i).items, citer);
1126                 }
1127
1128             }
1129
1130
1131         }
1132         public           void deleteSelected () {
1133
1134             print("DELETE SELECTED?");
1135             //_this.view.blockChanges = true;
1136             print("GET SELECTION?");
1137
1138             var s = _this.view.el.get_selection();
1139
1140             print("GET  SELECTED?");
1141            Gtk.TreeIter iter;
1142             Gtk.TreeModel mod;
1143
1144
1145             if (!s.get_selected(out mod, out iter)) {
1146                 return; // nothing seleted..
1147             }
1148
1149
1150
1151             this.activePath= "";
1152             print("GET  vnode value?");
1153
1154             GLib.Value value;
1155             this.el.get_value(iter, 2, out value);
1156             var data = (JsRender.Node)(value.get_object());
1157             print("removing node from Render\n");
1158             if (data.parent == null) {
1159                 this.file.tree = null;
1160             } else {
1161                 data.remove();
1162             }
1163             print("removing node from Tree\n");
1164             s.unselect_all();
1165             this.el.remove(ref iter);
1166
1167
1168
1169
1170             //
1171
1172
1173
1174
1175             this.activePath= ""; // again!?!?
1176             //this.changed(null,true);
1177
1178             _this.changed();
1179
1180             _this.view.blockChanges = false;
1181         }
1182         public           JsRender.Node pathToNode (string path) {
1183
1184
1185              Gtk.TreeIter   iter;
1186              _this.model.el.get_iter_from_string(out iter, path);
1187
1188              GLib.Value value;
1189              _this.model.el.get_value(iter, 2, out value);
1190
1191              return (JsRender.Node)value.dup_object();
1192
1193         }
1194         public           void dropNode (string target_data_str, JsRender.Node node, bool show_templates) {
1195         //         print("drop Node");
1196              // console.dump(node);
1197           //    console.dump(target_data);
1198
1199
1200                 // 0 = before , 1=after 2/3 onto
1201
1202
1203                 var target_data= target_data_str.split("|");
1204
1205                 var parent_str = target_data[0].length > 0 ? target_data[0] : "";
1206                 var pos = target_data.length > 1 ? int.parse(target_data[1]) : 2; // ontop..
1207
1208
1209                 Gtk.TreePath tree_path  =   parent_str.length > 0 ? new  Gtk.TreePath.from_string( parent_str ) : null;
1210
1211
1212
1213                 //print("add " + tp + "@" + target_data[1]  );
1214
1215                 JsRender.Node parentNode = null;
1216
1217                 Gtk.TreeIter iter_after;
1218                 Gtk.TreeIter iter_par ;
1219
1220
1221                  if (target_data.length == 3 && target_data[2].length > 0) {
1222                     node.props.set("* prop", target_data[2]);
1223                 }
1224
1225                 Gtk.TreePath expand_parent = null;
1226
1227                 // we only need to show the template if it's come from else where?
1228                  if (show_templates) {
1229
1230                     if (this.template_select == null) {
1231                         this.template_select = new DialogTemplateSelect();
1232                      }
1233
1234                      var new_node = this.template_select.show(
1235                           (Gtk.Window) _this.el.get_toplevel (),
1236                               this.file.palete(),
1237                            node);
1238
1239                      if (new_node != null) {
1240                          node = new_node;
1241                      }
1242                 }
1243
1244                  //print("pos is %d  \n".printf(pos));
1245
1246                  Gtk.TreeIter n_iter;
1247
1248                  if ( parent_str.length < 1) {
1249                       this.el.append(out n_iter, null); // drop at top level..
1250                       node.parent = null;
1251                       this.file.tree = node;
1252
1253
1254                 } else   if (pos  < 2) {
1255                     //print(target_data[1]  > 0 ? 'insert_after' : 'insert_before');
1256
1257                     this.el.get_iter(out iter_after, tree_path );
1258                     this.el.iter_parent(out iter_par, iter_after);
1259                     expand_parent = this.el.get_path(iter_par);
1260
1261                     GLib.Value value;
1262                     this.el.get_value( iter_par, 2, out value);
1263                     parentNode =  (JsRender.Node)value.dup_object();
1264
1265
1266                     this.el.get_value( iter_after, 2, out value);
1267                     var relNode =  (JsRender.Node)value.dup_object();
1268
1269                     if ( pos  > 0 ) {
1270
1271                         this.el.insert_after(out n_iter,    iter_par  , iter_after);
1272                         var ix = parentNode.items.index_of(relNode);
1273                         parentNode.items.insert(ix+1, node);
1274
1275                     } else {
1276                         this.el.insert_before(out n_iter,  iter_par  , iter_after);
1277                         var ix = parentNode.items.index_of(relNode);
1278                         parentNode.items.insert(ix, node);
1279
1280                     }
1281                     node.parent = parentNode;
1282
1283
1284
1285                 } else {
1286                    //  print("appending to  " + parent_str);
1287                     this.el.get_iter(out iter_par, tree_path);
1288                     this.el.append(out n_iter,   iter_par );
1289                     expand_parent = this.el.get_path(iter_par);
1290
1291                     GLib.Value value;
1292                     this.el.get_value( iter_par, 2, out value);
1293                     parentNode =  (JsRender.Node)value.dup_object();
1294                     node.parent = parentNode;
1295                     parentNode.items.add(node);
1296                 }
1297
1298                 // reparent node in tree...
1299
1300
1301                 // why only on no parent???
1302
1303                 //if (node.parent = null) {
1304
1305
1306
1307                 //}
1308
1309
1310                 // work out what kind of packing to use.. -- should be in
1311                 if (!node.has("pack")   && parent_str.length > 1) {
1312
1313                     this.file.palete().fillPack(node,parentNode);
1314
1315
1316                 }
1317
1318                 // add the node...
1319
1320                 this.el.set(n_iter, 0, node.nodeTitle(), 1, node.nodeTip(), -1  );
1321                 var o = new GLib.Value(typeof(Object));
1322                 o.set_object((Object)node);
1323
1324                 this.el.set_value(n_iter, 2, o);
1325
1326
1327
1328
1329         // load children - if it has any..
1330
1331                 if (node.items.size > 0) {
1332                     this.load(node.items, n_iter);
1333                     _this.view.el.expand_row(this.el.get_path(n_iter), true);
1334                 } else if (expand_parent != null && !_this.view.el.is_row_expanded(expand_parent)) {
1335                    _this.view.el.expand_row(expand_parent,true);
1336                 }
1337
1338                 //if (tp != null && (node.items.length() > 0 || pos > 1)) {
1339                 //    _this.view.el.expand_row(this.el.get_path(iter_par), true);
1340                // }
1341                 // wee need to get the empty proptypes from somewhere..
1342
1343                 //var olditer = this.activeIter;
1344                 this.activePath = this.el.get_path(n_iter).to_string();
1345
1346
1347
1348
1349                 _this.view.el.set_cursor(this.el.get_path(n_iter), null, false);
1350                 _this.changed();
1351
1352
1353
1354         }
1355     }
1356     public class Xcls_TreeViewColumn4 : Object
1357     {
1358         public Gtk.TreeViewColumn el;
1359         private Xcls_WindowLeftTree  _this;
1360
1361
1362             // my vars (def)
1363
1364         // ctor
1365         public Xcls_TreeViewColumn4(Xcls_WindowLeftTree _owner )
1366         {
1367             _this = _owner;
1368             this.el = new Gtk.TreeViewColumn();
1369
1370             // my vars (dec)
1371
1372             // set gobject values
1373             this.el.title = "test";
1374             var child_0 = new Xcls_renderer( _this );
1375             child_0.ref();
1376             this.el.pack_start (  child_0.el , true );
1377
1378             // init method
1379
1380             this.el.add_attribute(_this.renderer.el , "markup", 0 );        }
1381
1382         // user defined functions
1383     }
1384     public class Xcls_renderer : Object
1385     {
1386         public Gtk.CellRendererText el;
1387         private Xcls_WindowLeftTree  _this;
1388
1389
1390             // my vars (def)
1391
1392         // ctor
1393         public Xcls_renderer(Xcls_WindowLeftTree _owner )
1394         {
1395             _this = _owner;
1396             _this.renderer = this;
1397             this.el = new Gtk.CellRendererText();
1398
1399             // my vars (dec)
1400
1401             // set gobject values
1402         }
1403
1404         // user defined functions
1405     }
1406     public class Xcls_LeftTreeMenu : Object
1407     {
1408         public Gtk.Menu el;
1409         private Xcls_WindowLeftTree  _this;
1410
1411
1412             // my vars (def)
1413
1414         // ctor
1415         public Xcls_LeftTreeMenu(Xcls_WindowLeftTree _owner )
1416         {
1417             _this = _owner;
1418             _this.LeftTreeMenu = this;
1419             this.el = new Gtk.Menu();
1420
1421             // my vars (dec)
1422
1423             // set gobject values
1424             var child_0 = new Xcls_MenuItem7( _this );
1425             child_0.ref();
1426             this.el.add (  child_0.el  );
1427             var child_1 = new Xcls_MenuItem8( _this );
1428             child_1.ref();
1429             this.el.add (  child_1.el  );
1430             var child_2 = new Xcls_MenuItem9( _this );
1431             child_2.ref();
1432             this.el.add (  child_2.el  );
1433         }
1434
1435         // user defined functions
1436     }
1437     public class Xcls_MenuItem7 : Object
1438     {
1439         public Gtk.MenuItem el;
1440         private Xcls_WindowLeftTree  _this;
1441
1442
1443             // my vars (def)
1444
1445         // ctor
1446         public Xcls_MenuItem7(Xcls_WindowLeftTree _owner )
1447         {
1448             _this = _owner;
1449             this.el = new Gtk.MenuItem();
1450
1451             // my vars (dec)
1452
1453             // set gobject values
1454             this.el.label = "Delete Element";
1455
1456             // listeners
1457             this.el.activate.connect( ( ) => {
1458
1459                 print("ACTIVATE?");
1460
1461
1462                  _this.model.deleteSelected();
1463             });
1464         }
1465
1466         // user defined functions
1467     }
1468     public class Xcls_MenuItem8 : Object
1469     {
1470         public Gtk.MenuItem el;
1471         private Xcls_WindowLeftTree  _this;
1472
1473
1474             // my vars (def)
1475
1476         // ctor
1477         public Xcls_MenuItem8(Xcls_WindowLeftTree _owner )
1478         {
1479             _this = _owner;
1480             this.el = new Gtk.MenuItem();
1481
1482             // my vars (dec)
1483
1484             // set gobject values
1485             this.el.label = "Save as Template";
1486
1487             // listeners
1488             this.el.activate.connect( () => {
1489
1490                  DialogSaveTemplate.singleton().show(
1491                         (Gtk.Window) _this.el.get_toplevel (),
1492                         _this.model.file.palete(),
1493                         _this.getActiveElement()
1494                 );
1495
1496
1497             });
1498         }
1499
1500         // user defined functions
1501     }
1502     public class Xcls_MenuItem9 : Object
1503     {
1504         public Gtk.MenuItem el;
1505         private Xcls_WindowLeftTree  _this;
1506
1507
1508             // my vars (def)
1509
1510         // ctor
1511         public Xcls_MenuItem9(Xcls_WindowLeftTree _owner )
1512         {
1513             _this = _owner;
1514             this.el = new Gtk.MenuItem();
1515
1516             // my vars (dec)
1517
1518             // set gobject values
1519             this.el.label = "Save as Module";
1520
1521             // listeners
1522             this.el.activate.connect( () => {
1523                 var node = _this.getActiveElement();
1524                  var name = DialogSaveModule.singleton().show(
1525                         (Gtk.Window) _this.el.get_toplevel (),
1526                         _this.model.file.project,
1527                         node
1528                  );
1529                  if (name.length < 1) {
1530                         return;
1531
1532                  }
1533                  node.props.set("* xinclude", name);
1534                  node.items.clear();
1535
1536
1537                 var s = _this.view.el.get_selection();
1538
1539                 print("GET  SELECTED?");
1540                 Gtk.TreeIter iter;
1541                 Gtk.TreeModel mod;
1542
1543
1544                 if (!s.get_selected(out mod, out iter)) {
1545                     return; // nothing seleted..
1546                 }
1547                 Gtk.TreeIter citer;
1548                 var n_cn = mod.iter_n_children(iter) -1;
1549                 for (var i = n_cn; i > -1; i--) {
1550                     mod.iter_nth_child(out citer, iter, i);
1551
1552
1553                     print("removing node from Tree\n");
1554
1555                     _this.model.el.remove(ref citer);
1556                 }
1557                 _this.changed();
1558                 _this.node_selected(node);
1559
1560
1561             });
1562         }
1563
1564         // user defined functions
1565     }
1566 }