git.roojs.org Git - app.Builder.js/blob - src/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
  48     // user defined functions
  49     public           JsRender.Node? getActiveElement () { // return path to actie node.
  50
  51          var path = this.getActivePath();
  52          if (path.length < 1) {
  53             return null;
  54          }
  55          return _this.model.pathToNode(path);
  56
  57     }
  58     public           JsRender.JsRender getActiveFile () {
  59         return this.main_window.windowstate.file;
  60     }
  61     public           string getActivePath () {
  62
  63         var view = this.view.el;
  64         if (view.get_selection().count_selected_rows() < 1) {
  65             return "";
  66         }
  67         Gtk.TreeIter iter;
  68         Gtk.TreeModel mod;
  69         view.get_selection().get_selected(out mod, out iter);
  70         return mod.get_path(iter).to_string();
  71     }
  72     public class Xcls_view : Object
  73     {
  74         public Gtk.TreeView el;
  75         private Xcls_WindowLeftTree  _this;
  76
  77
  78             // my vars (def)
  79         public string dragData;
  80         public int drag_x;
  81         public string[] dropList;
  82         public int drag_y;
  83         public bool drag_in_motion;
  84         public bool blockChanges;
  85
  86         // ctor
  87         public Xcls_view(Xcls_WindowLeftTree _owner )
  88         {
  89             _this = _owner;
  90             _this.view = this;
  91             this.el = new Gtk.TreeView();
  92
  93             // my vars (dec)
  94             this.blockChanges = false;
  95
  96             // set gobject values
  97             this.el.tooltip_column = 1;
  98             this.el.enable_tree_lines = true;
  99             this.el.headers_visible = false;
 100             var child_0 = new Xcls_model( _this );
 101             child_0.ref();
 102             this.el.set_model (  child_0.el  );
 103             var child_1 = new Xcls_TreeViewColumn4( _this );
 104             child_1.ref();
 105             this.el.append_column (  child_1.el  );
 106
 107             // init method
 108
 109             {
 110                 var description = new Pango.FontDescription();
 111                 description.set_size(8000);
 112                 this.el.override_font(description);
 113
 114                 var selection = this.el.get_selection();
 115                 selection.set_mode( Gtk.SelectionMode.SINGLE);
 116
 117
 118                 // is this really needed??
 119                 /*
 120                 this.selection.signal['changed'].connect(function() {
 121                     _this.get('/LeftTree.view').listeners.cursor_changed.apply(
 122                         _this.get('/LeftTree.view'), [ _this.get('/LeftTree.view'), '']
 123                     );
 124                 });
 125                 */
 126                 Gtk.drag_source_set (
 127                     this.el,            /* widget will be drag-able */
 128                     Gdk.ModifierType.BUTTON1_MASK,       /* modifier that will start a drag */
 129                     BuilderApplication.targetList,            /* lists of target to support */
 130                     Gdk.DragAction.COPY   | Gdk.DragAction.MOVE    |  Gdk.DragAction.LINK           /* what to do with data after dropped */
 131                 );
 132
 133                 // ?? needed??
 134                 //Gtk.drag_source_add_text_targets(this.el);
 135
 136                 Gtk.drag_dest_set
 137                 (
 138                     this.el,              /* widget that will accept a drop */
 139                     Gtk.DestDefaults.MOTION  | Gtk.DestDefaults.HIGHLIGHT,
 140                     BuilderApplication.targetList,            /* lists of target to support */
 141                     Gdk.DragAction.COPY   | Gdk.DragAction.MOVE   | Gdk.DragAction.LINK     /* what to do with data after dropped */
 142                 );
 143
 144                 //Gtk.drag_dest_set_target_list(this.el, Builder.Application.targetList);
 145                 //Gtk.drag_dest_add_text_targets(this.el);
 146             }
 147
 148             //listeners
 149             this.el.button_press_event.connect( ( ev) => {
 150                 //console.log("button press?");
 151                 if (! _this.before_node_change(null) ) {
 152                    return true;
 153                 }
 154
 155
 156                 if (ev.type != Gdk.EventType.BUTTON_PRESS  || ev.button != 3) {
 157                     //print("click" + ev.type);
 158                     return false;
 159                 }
 160                 Gtk.TreePath res;
 161                 if (!_this.view.el.get_path_at_pos((int)ev.x,(int)ev.y, out res, null, null, null) ) {
 162                     return true;
 163                 }
 164
 165                 this.el.get_selection().select_path(res);
 166
 167                   //if (!this.get('/LeftTreeMenu').el)  {
 168                   //      this.get('/LeftTreeMenu').init();
 169                   //  }
 170
 171                  _this.LeftTreeMenu.el.set_screen(Gdk.Screen.get_default());
 172                  _this.LeftTreeMenu.el.show_all();
 173                   _this.LeftTreeMenu.el.popup(null, null, null,  3, ev.time);
 174                  //   print("click:" + res.path.to_string());
 175                   return true;
 176             });
 177             this.el.drag_begin.connect( ( ctx)  => {
 178                 //print('SOURCE: drag-begin');
 179
 180
 181                     //this.targetData = "";
 182
 183                     // find what is selected in our tree...
 184
 185                     var s = _this.view.el.get_selection();
 186                     if (s.count_selected_rows() < 1) {
 187                         return;
 188                     }
 189                     Gtk.TreeIter iter;
 190                     Gtk.TreeModel mod;
 191                     s.get_selected(out mod, out iter);
 192
 193
 194
 195                     // set some properties of the tree for use by the dropped element.
 196                     GLib.Value value;
 197                     _this.model.el.get_value(iter, 2, out value);
 198                     var tp = mod.get_path(iter).to_string();
 199                     var data = (JsRender.Node)(value.dup_object());
 200                     var xname = data.fqn();
 201                     print ("XNAME  IS " + xname+ "\n");
 202                     this.dragData = tp;
 203                     this.dropList = _this.main_window.windowstate.file.palete().getDropList(xname);
 204
 205                     print ("DROP LIST IS " + string.joinv(", ", this.dropList) + "\n");
 206
 207
 208                     // make the drag icon a picture of the node that was selected
 209
 210
 211                 // by default returns the path..
 212                    var path = _this.model.el.get_path(iter);
 213
 214
 215                     var pix = this.el.create_row_drag_icon ( path);
 216
 217                     Gtk.drag_set_icon_surface (ctx, pix) ;
 218
 219                     return;
 220             });
 221             this.el.cursor_changed.connect( ( ) => {
 222
 223
 224                  if (this.blockChanges) { // probably not needed..
 225                    return  ;
 226                  }
 227                   if (!_this.before_node_change(null) ) {
 228                      this.blockChanges = true;
 229                      this.el.get_selection().unselect_all();
 230                      this.blockChanges = false;
 231                      return;
 232                  }
 233                  if (_this.main_window.windowstate.file == null) {
 234                      return;
 235                  }
 236
 237                  //var render = this.get('/LeftTree').getRenderer();
 238                 print("LEFT TREE -> view -> selection changed called\n");
 239
 240
 241                 // -- it appears that the selection is not updated.
 242
 243                 GLib.Timeout.add_full(GLib.Priority.DEFAULT,10 , () => {
 244
 245
 246                         if (this.el.get_selection().count_selected_rows() < 1) {
 247
 248                             print("selected rows < 1\n");
 249                             //??this.model.load( false);
 250                             _this.node_selected(null);
 251
 252                             return false ;
 253                         }
 254
 255                             //console.log('changed');
 256                         var s = this.el.get_selection();
 257                          Gtk.TreeIter iter;
 258                          Gtk.TreeModel mod;
 259                         s.get_selected(out mod, out iter);
 260
 261
 262                         // var val = "";
 263                         GLib.Value value;
 264                         _this.model.el.get_value(iter, 2, out value);
 265                         _this.model.activePath = mod.get_path(iter).to_string();
 266
 267                         var node = (JsRender.Node)value.dup_object();
 268                         _this.node_selected(node);
 269                         while (Gtk.events_pending()) {
 270                             Gtk.main_iteration();
 271                        }
 272                         var cp = mod.get_path(iter);
 273                         Gtk.TreePath sp, ep;
 274                         this.el.get_visible_range(out sp, out ep);
 275                         // if sp is before cp then retuns 1.
 276                         // if cp is before ep then retuns 1.
 277                         if (cp.compare(sp) >= 0 && ep.compare(cp) >=1) {
 278                             return false;
 279                         }
 280
 281
 282
 283                         this.el.scroll_to_cell(new Gtk.TreePath.from_string(_this.model.activePath), null, true, 0.1f,0.0f);
 284
 285                         return false;
 286                   });
 287                 //_this.after_node_change(node);
 288
 289             //        _this.model.file.changed(node, "tree");
 290
 291                 //Seed.print( value.get_string());
 292                 return  ;
 293
 294             });
 295             this.el.drag_end.connect( (drag_context) => {
 296                 //Seed.print('LEFT-TREE: drag-end');
 297                     this.dragData = "";
 298                     this.dropList = null;
 299             //        this.targetData = "";
 300                     this.highlightDropPath("",0);
 301             //        return true;
 302             });
 303             this.el.drag_motion.connect( ( ctx, x, y, time)  => {
 304                print("got drag motion\n");
 305                 var src = Gtk.drag_get_source_widget(ctx);
 306                this.drag_x = x;
 307                this.drag_y = y;
 308
 309                if (src != this.el) {
 310
 311
 312
 313                 // the point of this is to detect where an item could be dropped..
 314                     print("requesting drag data\n");
 315                    this.drag_in_motion = true;
 316
 317                         // request data that will be recieved by the recieve...
 318                     Gtk.drag_get_data
 319                     (
 320                             this.el,         // will receive 'drag-data-received' signal
 321                             ctx,        // represents the current state of the DnD
 322                             Gdk.Atom.intern("STRING",true),    // the target type we want
 323                             time            // time stamp
 324                     );
 325                     return true;
 326               }
 327
 328
 329               print("action: %d\n", ctx.get_actions());
 330              //print("GETTING POS");
 331                 var  targetData = "";
 332
 333                 Gtk.TreePath path;
 334                 Gtk.TreeViewDropPosition pos;
 335                 var isOver = _this.view.el.get_dest_row_at_pos(this.drag_x,this.drag_y, out path, out pos);
 336
 337                 // if there are not items in the tree.. the we have to set isOver to true for anything..
 338                 var isEmpty = false;
 339                 if (_this.model.el.iter_n_children(null) < 1) {
 340                     print("got NO children?\n");
 341                     isOver = true; //???
 342                     isEmpty = true;
 343                     pos = Gtk.TreeViewDropPosition.INTO_OR_AFTER;
 344                 }
 345
 346
 347                 // ------------- a drag from self..
 348
 349
 350                 //var action = Gdk.DragAction.COPY;
 351                     // unless we are copying!!! ctl button..
 352
 353                 var action = (ctx.get_actions() & Gdk.DragAction.MOVE) > 0 ?
 354                              Gdk.DragAction.COPY  : Gdk.DragAction.MOVE ;
 355                             // Gdk.DragAction.MOVE : Gdk.DragAction.COPY ;
 356
 357
 358                 if (_this.model.el.iter_n_children(null) < 1) {
 359                     // no children.. -- asume it's ok..
 360
 361                     targetData = "|%d|".printf((int)Gtk.TreeViewDropPosition.INTO_OR_AFTER);
 362
 363                     this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 364                     Gdk.drag_status(ctx, action ,time);
 365                     return true;
 366
 367                     // continue through to allow drop...
 368
 369                 }
 370
 371
 372
 373
 374
 375                 //print("ISOVER? " + isOver);
 376                 if (!isOver) {
 377
 378                     Gdk.drag_status(ctx, 0 ,time);
 379                      this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 380                      return false;
 381
 382                 }
 383
 384                 // drag node is parent of child..
 385                 //console.log("SRC TREEPATH: " + src.treepath);
 386                 //console.log("TARGET TREEPATH: " + data.path.to_string());
 387
 388                 // nned to check a  few here..
 389                 //Gtk.TreeViewDropPosition.INTO_OR_AFTER
 390                 //Gtk.TreeViewDropPosition.INTO_OR_BEFORE
 391                 //Gtk.TreeViewDropPosition.AFTER
 392                 //Gtk.TreeViewDropPosition.BEFORE
 393
 394                 // locally dragged items to not really use the
 395                 var selection_text = this.dragData;
 396
 397
 398
 399                 if (selection_text == null || selection_text.length < 1) {
 400                             //print("Error  - drag selection text returned NULL");
 401                          Gdk.drag_status(ctx, 0 ,time);
 402                         this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 403                          return false;
 404                  }
 405
 406
 407                         // see if we are dragging into ourself?
 408                 var target_path = path.to_string();
 409                 print ("Drag  %s onto %s--%d\n ", selection_text, target_path, pos);
 410
 411                 // pos : 3 = ontop - 0 = after, 1 = before
 412                 //print("target_path="+target_path);
 413
 414                 //
 415                 if (selection_text  == target_path) {
 416                     print("self drag ?? == we should perhaps allow copy onto self..\n");
 417
 418                      Gdk.drag_status(ctx, 0 ,time);
 419                       this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 420                       return false;
 421             //                 -- fixme -- this is not really correct..
 422
 423                 }
 424
 425                 // check that
 426                 //print("DUMPING DATA");
 427                 //console.dump(data);
 428                 // path, pos
 429
 430                 //print(data.path.to_string() +' => '+  data.pos);
 431
 432                 // dropList is a list of xtypes that this node could be dropped on.
 433                 // it is set up when we start to drag..
 434
 435
 436                 targetData = _this.model.findDropNodeByPath( path.to_string(), this.dropList, pos);
 437
 438                 print("targetDAta: " + targetData +"\n");
 439
 440                 if (targetData.length < 1) {
 441                     //print("Can not find drop node path");
 442
 443                     Gdk.drag_status(ctx, 0, time);
 444                     this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 445                     return false;
 446                 }
 447
 448                 var td_ar = targetData.split("|");
 449
 450
 451
 452                 Gdk.drag_status(ctx, action ,time);
 453                 this.highlightDropPath(td_ar[0], (Gtk.TreeViewDropPosition)int.parse(td_ar[1]));
 454                 return true;
 455
 456
 457             });
 458             this.el.drag_data_get.connect( ( drag_context, data, info, time) => {
 459
 460
 461                              //print("drag-data-get");
 462                              var s = this.el.get_selection();
 463                              if (s.count_selected_rows() < 1) {
 464                                     data.set_text("",0);
 465                                      print("return empty string - no selection..");
 466                                     return;
 467                                 }
 468
 469                              Gtk.TreeIter iter;
 470                              Gtk.TreeModel mod;
 471
 472                              s.get_selected(out mod, out iter);
 473
 474
 475
 476                              GLib.Value value;
 477                              _this.model.el.get_value(iter, 2, out value);
 478                              var ndata = (JsRender.Node)(value.dup_object());
 479
 480
 481
 482                             var tp = mod.get_path(iter).to_string();
 483                             // by default returns the path..
 484
 485                            if ( info != Gdk.Atom.intern("STRING",true) ) {
 486                                 tp = ndata.toJsonString();
 487                            }
 488
 489                            //data.set_text(tp,tp.length);
 490
 491                             data.set (data.get_target (), 8, (uchar[]) tp.to_utf8 ());
 492
 493
 494                            //  print("return " + tp);
 495                         });
 496             this.el.drag_data_received.connect( (ctx, x, y, sel, info, time)  => {
 497
 498                     // THIS CODE ONLY RELATES TO drag  or drop of "NEW" elements or "FROM another tree.."
 499
 500
 501                     //  print("Tree: drag-data-received\n");
 502                     var selection_text = (string)sel.get_data();
 503                     //print("selection_text= %s\n",selection_text);
 504
 505                     var is_drag = this.drag_in_motion;
 506
 507
 508
 509                     print("Is Drag %s\n", is_drag ? "Y": "N");
 510                     var  targetData = "";
 511
 512                     Gtk.TreePath path;
 513                     Gtk.TreeViewDropPosition pos;
 514                     var isOver = _this.view.el.get_dest_row_at_pos(this.drag_x,this.drag_y, out path, out pos);
 515
 516                     // if there are not items in the tree.. the we have to set isOver to true for anything..
 517                     var isEmpty = false;
 518                     if (_this.model.el.iter_n_children(null) < 1) {
 519                         print("got NO children?\n");
 520                         isOver = true; //???
 521                         isEmpty = true;
 522                         pos = Gtk.TreeViewDropPosition.INTO_OR_AFTER;
 523                     }
 524
 525
 526                     //console.log("LEFT-TREE: drag-motion");
 527                     var src = Gtk.drag_get_source_widget(ctx);
 528
 529                     // a drag from self - this should be handled by drop and motion.
 530                     if (src == this.el) {
 531                         print("Source == this element should not happen.. ? \n");
 532                         return;
 533                     }
 534                     //print("drag_data_recieved from another element");
 535
 536
 537
 538
 539                     if (selection_text == null || selection_text.length < 1 || !isOver) {
 540                         // nothing valid foudn to drop...
 541                            print("empty sel text or not over");
 542                         if (is_drag) {
 543                             Gdk.drag_status(ctx, 0, time);
 544                             this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 545                             return;
 546                         }
 547                         Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 548                         // no drop action...
 549                         return;
 550
 551                     }
 552                     var dropNode = new JsRender.Node();
 553
 554                     var dropNodeType  = selection_text;
 555                     var show_templates = true;
 556                     // for drop
 557                     if (dropNodeType[0] == '{') {
 558                         var pa = new Json.Parser();
 559                         try {
 560                             pa.load_from_data(dropNodeType);
 561                         } catch (Error e) {
 562                             Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 563                             // no drop action...
 564                             return;
 565                         }
 566
 567                         dropNode.loadFromJson( pa.get_root().get_object(), 2);
 568                         dropNodeType = dropNode.fqn();
 569                         show_templates = false;
 570
 571
 572                     } else {
 573
 574                         dropNode.setFqn(selection_text);
 575                     }
 576
 577
 578                     // dropList --- need to gather this ...
 579                     print("get dropList for : %s\n",dropNodeType);
 580                     var dropList = _this.main_window.windowstate.file.palete().getDropList(dropNodeType);
 581
 582                     print("dropList: %s\n", string.joinv(" , ", dropList));
 583
 584                     // if drag action is link ... then we can drop it anywahere...
 585                      if ((ctx.get_actions() & Gdk.DragAction.LINK) > 0) {
 586                          // if path is null?? dragging into an empty tree?
 587                          targetData = (path == null ? "" :  path.to_string()) + "|%d".printf((int)pos);
 588                      } else {
 589
 590
 591                         targetData = _this.model.findDropNodeByPath( isEmpty ? "" : path.to_string(), dropList, pos);
 592                      }
 593
 594
 595
 596                     print("targetDAta: " + targetData +"\n");
 597
 598                     if (targetData.length < 1) {
 599
 600                         // invalid drop path..
 601                         if (this.drag_in_motion) {
 602                             Gdk.drag_status(ctx, 0, time);
 603                             this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 604                             return;
 605                         }
 606                         Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 607                         // no drop action...
 608                         return;
 609                     }
 610                     // valid drop path..
 611
 612                       var td_ar = targetData.split("|");
 613
 614
 615                     if (this.drag_in_motion) {
 616                         Gdk.drag_status(ctx, Gdk.DragAction.COPY ,time);
 617
 618                         this.highlightDropPath(  td_ar[0]  , (Gtk.TreeViewDropPosition)int.parse(td_ar[1]));
 619                         return;
 620                     }
 621                     // continue on to allow drop..
 622
 623
 624                     // at this point, drag is not in motion... -- as checked above... - so it's a real drop event..
 625
 626
 627                     _this.model.dropNode(targetData, dropNode, show_templates);
 628                     print("ADD new node!!!\n");
 629
 630                     ///Xcls_DialogTemplateSelect.singleton().show( _this.model.file.palete(), node);
 631
 632                     Gtk.drag_finish (ctx, false, false,time);
 633
 634
 635
 636
 637
 638             });
 639             this.el.drag_drop.connect( (  ctx, x, y, time)  => {
 640                   //Seed.print("TARGET: drag-drop");
 641
 642
 643                 var src = Gtk.drag_get_source_widget(ctx);
 644
 645                if (src != this.el) {
 646
 647
 648
 649                    this.drag_in_motion = false;
 650                         // request data that will be recieved by the recieve...
 651                     Gtk.drag_get_data
 652                     (
 653                             this.el,         // will receive 'drag-data-received' signal
 654                             ctx,        // represents the current state of the DnD
 655                             Gdk.Atom.intern("application/json",true),    // the target type we want
 656                             time            // time stamp
 657                     );
 658
 659
 660                     // No target offered by source => error
 661
 662
 663                      return  false;
 664                  }
 665
 666                  // handle drop around self..
 667
 668
 669
 670                 //print("GETTING POS");
 671                 var  targetData = "";
 672
 673                 Gtk.TreePath path;
 674                 Gtk.TreeViewDropPosition pos;
 675                 var isOver = _this.view.el.get_dest_row_at_pos(this.drag_x,this.drag_y, out path, out pos);
 676
 677                 // if there are not items in the tree.. the we have to set isOver to true for anything..
 678                 var isEmpty = false;
 679                 if (_this.model.el.iter_n_children(null) < 1) {
 680                     print("got NO children?\n");
 681                     isOver = true; //???
 682                     isEmpty = true;
 683                     pos = Gtk.TreeViewDropPosition.INTO_OR_AFTER;
 684                 }
 685
 686
 687
 688                 //var action = Gdk.DragAction.COPY;
 689                     // unless we are copying!!! ctl button..
 690
 691                 var action = (ctx.get_actions() & Gdk.DragAction.MOVE) > 0 ?
 692                              Gdk.DragAction.COPY  : Gdk.DragAction.MOVE ;
 693                             // Gdk.DragAction.MOVE : Gdk.DragAction.COPY ;
 694
 695
 696                 if (_this.model.el.iter_n_children(null) < 1) {
 697                     // no children.. -- asume it's ok..
 698
 699                     targetData = "|%d|".printf((int)Gtk.TreeViewDropPosition.INTO_OR_AFTER);
 700
 701                     // continue through to allow drop...
 702
 703                 } else {
 704
 705
 706
 707
 708
 709                             //print("ISOVER? " + isOver);
 710                     if (!isOver) {
 711
 712                         Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 713                         return true; // not over apoint!?! - no action on drop or motion..
 714                     }
 715
 716                     // drag node is parent of child..
 717                     //console.log("SRC TREEPATH: " + src.treepath);
 718                     //console.log("TARGET TREEPATH: " + data.path.to_string());
 719
 720                     // nned to check a  few here..
 721                     //Gtk.TreeViewDropPosition.INTO_OR_AFTER
 722                     //Gtk.TreeViewDropPosition.INTO_OR_BEFORE
 723                     //Gtk.TreeViewDropPosition.AFTER
 724                     //Gtk.TreeViewDropPosition.BEFORE
 725
 726                     // locally dragged items to not really use the
 727                     var selection_text = this.dragData;
 728
 729
 730
 731                     if (selection_text == null || selection_text.length < 1) {
 732                         //print("Error  - drag selection text returned NULL");
 733
 734                          Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 735                          return true; /// -- fixme -- this is not really correct..
 736                     }
 737
 738                             // see if we are dragging into ourself?
 739                             print ("got selection text of  " + selection_text);
 740
 741                     var target_path = path.to_string();
 742                     //print("target_path="+target_path);
 743
 744                     //
 745                     if (selection_text  == target_path) {
 746                         print("self drag ?? == we should perhaps allow copy onto self..\n");
 747
 748                          Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 749
 750                          return true; /// -- fixme -- this is not really correct..
 751
 752                     }
 753
 754                     // check that
 755                     //print("DUMPING DATA");
 756                     //console.dump(data);
 757                     // path, pos
 758
 759                     //print(data.path.to_string() +' => '+  data.pos);
 760
 761                     // dropList is a list of xtypes that this node could be dropped on.
 762                     // it is set up when we start to drag..
 763
 764
 765                     targetData = _this.model.findDropNodeByPath( path.to_string(), this.dropList, pos);
 766
 767                     print("targetDAta: " + targetData +"\n");
 768
 769                     if (targetData.length < 1) {
 770                         //print("Can not find drop node path");
 771
 772                         Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 773                         return true;
 774                     }
 775
 776
 777
 778                             // continue on to allow drop..
 779               }
 780                     // at this point, drag is not in motion... -- as checked above... - so it's a real drop event..
 781
 782
 783                  var delete_selection_data = false;
 784
 785                 if (action == Gdk.DragAction.ASK)  {
 786                     /* Ask the user to move or copy, then set the ctx action. */
 787                 }
 788
 789                 if (action == Gdk.DragAction.MOVE) {
 790                     delete_selection_data = true;
 791                 }
 792
 793                             // drag around.. - reorder..
 794                 _this.model.moveNode(targetData, action);
 795
 796
 797
 798
 799
 800                     // we can send stuff to souce here...
 801
 802
 803             // do we always say failure, so we handle the reall drop?
 804                 Gtk.drag_finish (ctx, false, false,time); //delete_selection_data, time);
 805
 806                 return true;
 807
 808
 809
 810
 811
 812
 813             });
 814         }
 815
 816         // user defined functions
 817         public           void highlightDropPath ( string treepath, Gtk.TreeViewDropPosition pos) {
 818
 819                 // highlighting for drag/drop
 820                 if (treepath.length > 0) {
 821                     this.el.set_drag_dest_row(  new  Gtk.TreePath.from_string( treepath ), pos);
 822                   } else {
 823                     this.el.set_drag_dest_row(null, Gtk.TreeViewDropPosition.INTO_OR_AFTER);
 824                  }
 825
 826         }
 827         public           void selectNode (string treepath_str) {
 828             //this.selection.select_path(new  Gtk.TreePath.from_string( treepath_str));
 829              var tp = new Gtk.TreePath.from_string(treepath_str);
 830
 831              this.el.set_cursor(tp, null, false);
 832              this.el.scroll_to_cell(tp, null, false, 0,0);
 833         }
 834     }
 835     public class Xcls_model : Object
 836     {
 837         public Gtk.TreeStore el;
 838         private Xcls_WindowLeftTree  _this;
 839
 840
 841             // my vars (def)
 842         public DialogTemplateSelect template_select;
 843         public string activePath;
 844
 845         // ctor
 846         public Xcls_model(Xcls_WindowLeftTree _owner )
 847         {
 848             _this = _owner;
 849             _this.model = this;
 850             this.el = new Gtk.TreeStore( 3, typeof(string),typeof(string),typeof(Object) );
 851
 852             // my vars (dec)
 853             this.template_select = null;
 854             this.activePath = "";
 855
 856             // set gobject values
 857
 858             // init method
 859
 860             print("model initialized");
 861         }
 862
 863         // user defined functions
 864         public           string findDropNode (string treepath_str, string[] targets) {
 865
 866             // this is used by the dragdrop code in the roo version AFAIR..
 867
 868             //var path = treepath_str.replace(/^builder-/, '');
 869             // treemap is depreciated... - should really check if model has any entries..
 870
 871             if (this.el.iter_n_children(null) < 1) {
 872                 //print("NO KEYS");
 873                 return "|%d".printf((int)Gtk.TreeViewDropPosition.INTO_OR_AFTER);
 874             }
 875             //print("FIND treepath: " + path);
 876             //console.dump(this.treemap);
 877
 878             //if (!treepath_str.match(/^builder-/)) {
 879             //    return []; // nothing!
 880             //}
 881             if (targets.length > 0 && targets[0] == "*") {
 882                 return  treepath_str;
 883             }
 884             return this.findDropNodeByPath(treepath_str,targets, -1);
 885         }
 886         public           void loadFile (JsRender.JsRender f) {
 887             //console.dump(f);
 888             this.el.clear();
 889
 890             // needed???
 891             _this.main_window.windowstate.file = f;
 892
 893
 894             if (f.tree == null) {
 895                     try {
 896                         f.loadItems( );
 897                 } catch (Error e) {
 898                         return;
 899                 }
 900             }
 901             // if it's still null?
 902             if (f.tree == null) {
 903                 return;
 904             }
 905
 906             var o = new Gee.ArrayList<JsRender.Node>();
 907             o.add(f.tree);
 908             this.load(o,null);
 909
 910             _this.view.el.expand_all();
 911
 912             if (f.tree.items.size < 1) {
 913                 // single item..
 914
 915                 //this.get('/Window.leftvpaned').el.set_position(80);
 916                 // select first...
 917                 _this.view.el.set_cursor(
 918                     new  Gtk.TreePath.from_string("0"), null, false);
 919
 920
 921             } else {
 922                   //this.get('/Window.leftvpaned').el.set_position(200);
 923             }
 924
 925             return;
 926
 927
 928         }
 929         public    void updateSelected () {
 930
 931
 932             var s = _this.view.el.get_selection();
 933
 934              Gtk.TreeIter iter;
 935             Gtk.TreeModel mod;
 936
 937
 938
 939             if (!s.get_selected(out mod, out iter)) {
 940                 return; // nothing seleted..
 941             }
 942
 943           GLib.Value value;
 944             this.el.get_value(iter, 2, out value);
 945             var node = (JsRender.Node)(value.get_object());
 946
 947               this.el.set(iter, 0, node.nodeTitle(),
 948                         1, node.nodeTip(), -1
 949                 );
 950         }
 951         public           string findDropNodeByPath (string treepath_str, string[] targets, int in_pref = -1) {
 952
 953             var path = treepath_str; // dupe it..
 954
 955
 956             // pref : 3 = ontop - 0 = after, 1 = before
 957             int pref = in_pref < 0  ?  Gtk.TreeViewDropPosition.INTO_OR_AFTER : in_pref;
 958
 959             var last = "";
 960
 961             //console.dump(this.treemap);
 962
 963             print("findDropNodeByPath : got path length %d / %s\n", path.length, path);
 964
 965             if (path.length == 0) {
 966                 // top drop. // just return empty..
 967                 return "|%d".printf((int)pref) ;
 968
 969             }
 970
 971
 972             while (path.length > 0) {
 973
 974                 if (path.length == treepath_str.length && pref != Gtk.TreeViewDropPosition.INTO_OR_AFTER) {
 975                     if (path.last_index_of(":") < 0 ) {
 976                         return "";
 977                     }
 978                     path = path.substring(0, path.last_index_of(":"));
 979                     last = treepath_str;
 980                     print("DROP  before or after : using %s\n",path);
 981                     continue;
 982                 }
 983
 984                 //print("LOOKING FOR PATH: " + path);
 985                 var node_data = this.pathToNode(path);
 986
 987                 if (node_data == null) {
 988                     print("node not found");
 989                     return "";
 990                 }
 991
 992                 var xname = node_data.fqn();
 993                 var match = "";
 994                 var prop = "";
 995
 996                 for (var i =0; i < targets.length; i++)  {
 997                     var tg = targets[i];
 998                     if ((tg == xname)  ) {
 999                         match = tg;
1000                         break;
1001                     }
1002                     // if target is "xxxx:name"
1003                     if (tg.contains(xname +":")) {
1004                         match = tg;
1005                         var ar = tg.split(":");
1006                         prop = ar[1];
1007                         break;
1008                     }
1009                 }
1010
1011                 if (match.length > 0) {
1012                     if (last.length > 0) { // pref is after/before..
1013                         // then it's after last
1014                         //if (pref > 1) {
1015                         //    return "";
1016                         //}
1017                         return last + "|%d".printf((int)pref) + "|" + prop;
1018
1019
1020                     }
1021                     // we need to add prop - as :store -> needs to bee added when dropping onto.
1022                     return path + "|%d".printf( (int) Gtk.TreeViewDropPosition.INTO_OR_AFTER)  + "|" + prop;
1023                 }
1024                 /*
1025                 last = "" + path;
1026                 var par = path.split(":");
1027                 string [] ppar = {};
1028                 for (var i = 0; i < par.length-1; i++) {
1029                     ppar += par[i];
1030                 }
1031
1032                 path = string.joinv(":", ppar);
1033                 */
1034                 break;
1035
1036             }
1037
1038             return "";
1039
1040         }
1041         public           void moveNode (string target_data, Gdk.DragAction action)
1042         {
1043
1044            /// target_data = "path|pos");
1045
1046
1047             //print("MOVE NODE");
1048             // console.dump(target_data);
1049             Gtk.TreeIter old_iter;
1050             Gtk.TreeModel mod;
1051
1052             var s = _this.view.el.get_selection();
1053             s.get_selected(out mod , out old_iter);
1054             mod.get_path(old_iter);
1055
1056             var node = this.pathToNode(mod.get_path(old_iter).to_string());
1057             //console.dump(node);
1058             if (node == null) {
1059                 print("moveNode: ERROR - node is null?");
1060             }
1061
1062
1063
1064             // needs to drop first, otherwise the target_data
1065             // treepath will be invalid.
1066
1067
1068             if ((action & Gdk.DragAction.MOVE) > 0) {
1069                     print("REMOVING OLD NODE : " + target_data + "\n");
1070                     node.remove();
1071                     this.dropNode(target_data, node, false);
1072                     this.el.remove(ref old_iter);
1073
1074
1075
1076             } else {
1077                 print("DROPPING NODE // copy: " + target_data + "\n");
1078                 node = node.deepClone();
1079                 this.dropNode(target_data, node, false);
1080             }
1081             _this.changed();
1082             this.activePath= "";
1083             //this.updateNode(false,true);
1084         }
1085         public           void load (Gee.ArrayList<JsRender.Node> tr, Gtk.TreeIter? iter)
1086         {
1087             Gtk.TreeIter citer;
1088             //this.insert(citer,iter,0);
1089             for(var i =0 ; i < tr.size; i++) {
1090                 if (iter != null) {
1091                     this.el.insert(out citer,iter,-1); // why not append?
1092                 } else {
1093                     this.el.append(out citer,null);
1094                 }
1095
1096                 this.el.set(citer, 0, tr.get(i).nodeTitle(),
1097                         1, tr.get(i).nodeTip(), -1
1098                 );
1099                 var o =   GLib.Value(typeof(Object));
1100                 o.set_object((Object)tr.get(i));
1101
1102                 this.el.set_value(citer, 2, o);
1103
1104                 if (tr.get(i).items.size > 0) {
1105                     this.load(tr.get(i).items, citer);
1106                 }
1107
1108             }
1109
1110
1111         }
1112         public           void deleteSelected () {
1113
1114             print("DELETE SELECTED?");
1115             //_this.view.blockChanges = true;
1116             print("GET SELECTION?");
1117
1118             var s = _this.view.el.get_selection();
1119
1120             print("GET  SELECTED?");
1121            Gtk.TreeIter iter;
1122             Gtk.TreeModel mod;
1123
1124
1125             if (!s.get_selected(out mod, out iter)) {
1126                 return; // nothing seleted..
1127             }
1128
1129
1130
1131             this.activePath= "";
1132             print("GET  vnode value?");
1133
1134             GLib.Value value;
1135             this.el.get_value(iter, 2, out value);
1136             var data = (JsRender.Node)(value.get_object());
1137             print("removing node from Render\n");
1138             if (data.parent == null) {
1139                _this.main_window.windowstate.file.tree = null;
1140             } else {
1141                 data.remove();
1142             }
1143             print("removing node from Tree\n");
1144             s.unselect_all();
1145             this.el.remove(ref iter);
1146
1147
1148
1149
1150             //
1151
1152
1153
1154
1155             this.activePath= ""; // again!?!?
1156             //this.changed(null,true);
1157
1158             _this.changed();
1159
1160             _this.view.blockChanges = false;
1161         }
1162         public           JsRender.Node pathToNode (string path) {
1163
1164
1165              Gtk.TreeIter   iter;
1166              _this.model.el.get_iter_from_string(out iter, path);
1167
1168              GLib.Value value;
1169              _this.model.el.get_value(iter, 2, out value);
1170
1171              return (JsRender.Node)value.dup_object();
1172
1173         }
1174         public           void dropNode (string target_data_str, JsRender.Node node, bool show_templates) {
1175         //         print("drop Node");
1176              // console.dump(node);
1177           //    console.dump(target_data);
1178
1179
1180                 // 0 = before , 1=after 2/3 onto
1181
1182
1183                 var target_data= target_data_str.split("|");
1184
1185                 var parent_str = target_data[0].length > 0 ? target_data[0] : "";
1186                 var pos = target_data.length > 1 ? int.parse(target_data[1]) : 2; // ontop..
1187
1188
1189                 Gtk.TreePath tree_path  =   parent_str.length > 0 ? new  Gtk.TreePath.from_string( parent_str ) : null;
1190
1191
1192
1193                 //print("add " + tp + "@" + target_data[1]  );
1194
1195                 JsRender.Node parentNode = null;
1196
1197                 Gtk.TreeIter iter_after;
1198                 Gtk.TreeIter iter_par ;
1199
1200
1201                  if (target_data.length == 3 && target_data[2].length > 0) {
1202                     node.props.set("* prop", target_data[2]);
1203                 }
1204
1205                 Gtk.TreePath expand_parent = null;
1206
1207                 // we only need to show the template if it's come from else where?
1208                  if (show_templates) {
1209
1210                      var ts = _this.main_window.windowstate.template_select;
1211
1212                      var new_node = ts.show(
1213                           _this.main_window, // (Gtk.Window) _this.el.get_toplevel (),
1214                          _this.main_window.windowstate.file.palete(),
1215                             node,
1216                             _this.main_window.windowstate.project);
1217
1218                      if (new_node == null) {
1219                          return; // do not add?
1220                      }
1221                      node = new_node;
1222                 }
1223
1224                  //print("pos is %d  \n".printf(pos));
1225
1226                  Gtk.TreeIter n_iter;
1227
1228                  if ( parent_str.length < 1) {
1229                       this.el.append(out n_iter, null); // drop at top level..
1230                       node.parent = null;
1231                       _this.main_window.windowstate.file.tree = node;
1232
1233
1234                 } else   if (pos  < 2) {
1235                     //print(target_data[1]  > 0 ? 'insert_after' : 'insert_before');
1236
1237                     this.el.get_iter(out iter_after, tree_path );
1238                     this.el.iter_parent(out iter_par, iter_after);
1239                     expand_parent = this.el.get_path(iter_par);
1240
1241                     GLib.Value value;
1242                     this.el.get_value( iter_par, 2, out value);
1243                     parentNode =  (JsRender.Node)value.dup_object();
1244
1245
1246                     this.el.get_value( iter_after, 2, out value);
1247                     var relNode =  (JsRender.Node)value.dup_object();
1248
1249                     if ( pos  > 0 ) {
1250
1251                         this.el.insert_after(out n_iter,    iter_par  , iter_after);
1252                         var ix = parentNode.items.index_of(relNode);
1253                         parentNode.items.insert(ix+1, node);
1254
1255                     } else {
1256                         this.el.insert_before(out n_iter,  iter_par  , iter_after);
1257                         var ix = parentNode.items.index_of(relNode);
1258                         parentNode.items.insert(ix, node);
1259
1260                     }
1261                     node.parent = parentNode;
1262
1263
1264
1265                 } else {
1266                    //  print("appending to  " + parent_str);
1267                     this.el.get_iter(out iter_par, tree_path);
1268                     this.el.append(out n_iter,   iter_par );
1269                     expand_parent = this.el.get_path(iter_par);
1270
1271                     GLib.Value value;
1272                     this.el.get_value( iter_par, 2, out value);
1273                     parentNode =  (JsRender.Node)value.dup_object();
1274                     node.parent = parentNode;
1275                     parentNode.items.add(node);
1276                 }
1277
1278                 // reparent node in tree...
1279
1280
1281                 // why only on no parent???
1282
1283                 //if (node.parent = null) {
1284
1285
1286
1287                 //}
1288
1289
1290                 // work out what kind of packing to use.. -- should be in
1291                 if (!node.has("pack")   && parent_str.length > 1) {
1292
1293                     _this.main_window.windowstate.file.palete().fillPack(node,parentNode);
1294
1295
1296                 }
1297
1298                 // add the node...
1299
1300                 this.el.set(n_iter, 0, node.nodeTitle(), 1, node.nodeTip(), -1  );
1301                 var o =   GLib.Value(typeof(Object));
1302                 o.set_object((Object)node);
1303
1304                 this.el.set_value(n_iter, 2, o);
1305
1306
1307
1308
1309         // load children - if it has any..
1310
1311                 if (node.items.size > 0) {
1312                     this.load(node.items, n_iter);
1313                     _this.view.el.expand_row(this.el.get_path(n_iter), true);
1314                 } else if (expand_parent != null && !_this.view.el.is_row_expanded(expand_parent)) {
1315                    _this.view.el.expand_row(expand_parent,true);
1316                 }
1317
1318                 //if (tp != null && (node.items.length() > 0 || pos > 1)) {
1319                 //    _this.view.el.expand_row(this.el.get_path(iter_par), true);
1320                // }
1321                 // wee need to get the empty proptypes from somewhere..
1322
1323                 //var olditer = this.activeIter;
1324                 this.activePath = this.el.get_path(n_iter).to_string();
1325
1326
1327
1328
1329                 _this.view.el.set_cursor(this.el.get_path(n_iter), null, false);
1330                 _this.changed();
1331
1332
1333
1334         }
1335         public string treePathFromNode (JsRender.Node node) {
1336             // iterate through the tree and find the node
1337             var ret = "";
1338
1339             this.el.foreach((mod, pth, iter) => {
1340                 // get the node..
1341
1342
1343                  GLib.Value value;
1344                  _this.model.el.get_value(iter, 2, out value);
1345
1346
1347
1348                  var n = (JsRender.Node)value;
1349
1350                  print("compare %s to %s\n", n.fqn(), node.fqn());
1351                 if (node == n) {
1352                     ret = pth.to_string();
1353                     return true;
1354                 }
1355                 return false;
1356             });
1357             return ret;
1358
1359         }
1360     }
1361
1362     public class Xcls_TreeViewColumn4 : Object
1363     {
1364         public Gtk.TreeViewColumn el;
1365         private Xcls_WindowLeftTree  _this;
1366
1367
1368             // my vars (def)
1369
1370         // ctor
1371         public Xcls_TreeViewColumn4(Xcls_WindowLeftTree _owner )
1372         {
1373             _this = _owner;
1374             this.el = new Gtk.TreeViewColumn();
1375
1376             // my vars (dec)
1377
1378             // set gobject values
1379             this.el.title = "test";
1380             var child_0 = new Xcls_renderer( _this );
1381             child_0.ref();
1382             this.el.pack_start (  child_0.el , true );
1383
1384             // init method
1385
1386             this.el.add_attribute(_this.renderer.el , "markup", 0 );
1387         }
1388
1389         // user defined functions
1390     }
1391     public class Xcls_renderer : Object
1392     {
1393         public Gtk.CellRendererText el;
1394         private Xcls_WindowLeftTree  _this;
1395
1396
1397             // my vars (def)
1398
1399         // ctor
1400         public Xcls_renderer(Xcls_WindowLeftTree _owner )
1401         {
1402             _this = _owner;
1403             _this.renderer = this;
1404             this.el = new Gtk.CellRendererText();
1405
1406             // my vars (dec)
1407
1408             // set gobject values
1409         }
1410
1411         // user defined functions
1412     }
1413
1414
1415
1416     public class Xcls_LeftTreeMenu : Object
1417     {
1418         public Gtk.Menu el;
1419         private Xcls_WindowLeftTree  _this;
1420
1421
1422             // my vars (def)
1423
1424         // ctor
1425         public Xcls_LeftTreeMenu(Xcls_WindowLeftTree _owner )
1426         {
1427             _this = _owner;
1428             _this.LeftTreeMenu = this;
1429             this.el = new Gtk.Menu();
1430
1431             // my vars (dec)
1432
1433             // set gobject values
1434             var child_0 = new Xcls_MenuItem7( _this );
1435             child_0.ref();
1436             this.el.add (  child_0.el  );
1437             var child_1 = new Xcls_MenuItem8( _this );
1438             child_1.ref();
1439             this.el.add (  child_1.el  );
1440             var child_2 = new Xcls_MenuItem9( _this );
1441             child_2.ref();
1442             this.el.add (  child_2.el  );
1443         }
1444
1445         // user defined functions
1446     }
1447     public class Xcls_MenuItem7 : Object
1448     {
1449         public Gtk.MenuItem el;
1450         private Xcls_WindowLeftTree  _this;
1451
1452
1453             // my vars (def)
1454
1455         // ctor
1456         public Xcls_MenuItem7(Xcls_WindowLeftTree _owner )
1457         {
1458             _this = _owner;
1459             this.el = new Gtk.MenuItem();
1460
1461             // my vars (dec)
1462
1463             // set gobject values
1464             this.el.label = "Delete Element";
1465
1466             //listeners
1467             this.el.activate.connect( ( ) => {
1468
1469                 print("ACTIVATE?");
1470
1471
1472                  _this.model.deleteSelected();
1473             });
1474         }
1475
1476         // user defined functions
1477     }
1478
1479     public class Xcls_MenuItem8 : Object
1480     {
1481         public Gtk.MenuItem el;
1482         private Xcls_WindowLeftTree  _this;
1483
1484
1485             // my vars (def)
1486
1487         // ctor
1488         public Xcls_MenuItem8(Xcls_WindowLeftTree _owner )
1489         {
1490             _this = _owner;
1491             this.el = new Gtk.MenuItem();
1492
1493             // my vars (dec)
1494
1495             // set gobject values
1496             this.el.label = "Save as Template";
1497
1498             //listeners
1499             this.el.activate.connect( () => {
1500
1501                  DialogSaveTemplate.singleton().show(
1502                         (Gtk.Window) _this.el.get_toplevel (),
1503                         _this.main_window.windowstate.file.palete(),
1504                         _this.getActiveElement()
1505                 );
1506
1507
1508             });
1509         }
1510
1511         // user defined functions
1512     }
1513
1514     public class Xcls_MenuItem9 : Object
1515     {
1516         public Gtk.MenuItem el;
1517         private Xcls_WindowLeftTree  _this;
1518
1519
1520             // my vars (def)
1521
1522         // ctor
1523         public Xcls_MenuItem9(Xcls_WindowLeftTree _owner )
1524         {
1525             _this = _owner;
1526             this.el = new Gtk.MenuItem();
1527
1528             // my vars (dec)
1529
1530             // set gobject values
1531             this.el.label = "Save as Module";
1532
1533             //listeners
1534             this.el.activate.connect( () => {
1535                 var node = _this.getActiveElement();
1536                  var name = DialogSaveModule.singleton().show(
1537                         (Gtk.Window) _this.el.get_toplevel (),
1538                         _this.main_window.windowstate.project,
1539                         node
1540                  );
1541                  if (name.length < 1) {
1542                         return;
1543
1544                  }
1545                  node.props.set("* xinclude", name);
1546                  node.items.clear();
1547
1548
1549                 var s = _this.view.el.get_selection();
1550
1551                 print("GET  SELECTED?");
1552                 Gtk.TreeIter iter;
1553                 Gtk.TreeModel mod;
1554
1555
1556                 if (!s.get_selected(out mod, out iter)) {
1557                     return; // nothing seleted..
1558                 }
1559                 Gtk.TreeIter citer;
1560                 var n_cn = mod.iter_n_children(iter) -1;
1561                 for (var i = n_cn; i > -1; i--) {
1562                     mod.iter_nth_child(out citer, iter, i);
1563
1564
1565                     print("removing node from Tree\n");
1566
1567                     _this.model.el.remove(ref citer);
1568                 }
1569                 _this.changed();
1570                 _this.node_selected(node);
1571
1572
1573             });
1574         }
1575
1576         // user defined functions
1577     }
1578
1579
1580 }