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