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.model.file;
  60     }
  61     public           string getActivePath () {
  62         var model = this.model;
  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.modify_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.model.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.model.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                         return false;
 270                   });
 271                 //_this.after_node_change(node);
 272
 273             //        _this.model.file.changed(node, "tree");
 274
 275                 //Seed.print( value.get_string());
 276                 return  ;
 277
 278             });
 279             this.el.drag_end.connect( (drag_context) => {
 280                 //Seed.print('LEFT-TREE: drag-end');
 281                     this.dragData = "";
 282                     this.dropList = null;
 283             //        this.targetData = "";
 284                     this.highlightDropPath("",0);
 285             //        return true;
 286             });
 287             this.el.drag_motion.connect( ( ctx, x, y, time)  => {
 288                print("got drag motion\n");
 289                 var src = Gtk.drag_get_source_widget(ctx);
 290                this.drag_x = x;
 291                this.drag_y = y;
 292
 293                if (src != this.el) {
 294
 295
 296
 297                 // the point of this is to detect where an item could be dropped..
 298                     print("requesting drag data\n");
 299                    this.drag_in_motion = true;
 300
 301                         // request data that will be recieved by the recieve...
 302                     Gtk.drag_get_data
 303                     (
 304                             this.el,         // will receive 'drag-data-received' signal
 305                             ctx,        // represents the current state of the DnD
 306                             Gdk.Atom.intern("STRING",true),    // the target type we want
 307                             time            // time stamp
 308                     );
 309                     return true;
 310               }
 311
 312
 313               print("action: %d\n", ctx.get_actions());
 314              //print("GETTING POS");
 315                 var  targetData = "";
 316
 317                 Gtk.TreePath path;
 318                 Gtk.TreeViewDropPosition pos;
 319                 var isOver = _this.view.el.get_dest_row_at_pos(this.drag_x,this.drag_y, out path, out pos);
 320
 321                 // if there are not items in the tree.. the we have to set isOver to true for anything..
 322                 var isEmpty = false;
 323                 if (_this.model.el.iter_n_children(null) < 1) {
 324                     print("got NO children?\n");
 325                     isOver = true; //???
 326                     isEmpty = true;
 327                     pos = Gtk.TreeViewDropPosition.INTO_OR_AFTER;
 328                 }
 329
 330
 331                 // ------------- a drag from self..
 332
 333
 334                 //var action = Gdk.DragAction.COPY;
 335                     // unless we are copying!!! ctl button..
 336
 337                 var action = (ctx.get_actions() & Gdk.DragAction.MOVE) > 0 ?
 338                              Gdk.DragAction.COPY  : Gdk.DragAction.MOVE ;
 339                             // Gdk.DragAction.MOVE : Gdk.DragAction.COPY ;
 340
 341
 342                 if (_this.model.el.iter_n_children(null) < 1) {
 343                     // no children.. -- asume it's ok..
 344
 345                     targetData = "|%d|".printf((int)Gtk.TreeViewDropPosition.INTO_OR_AFTER);
 346
 347                     this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 348                     Gdk.drag_status(ctx, action ,time);
 349                     return true;
 350
 351                     // continue through to allow drop...
 352
 353                 }
 354
 355
 356
 357
 358
 359                 //print("ISOVER? " + isOver);
 360                 if (!isOver) {
 361
 362                     Gdk.drag_status(ctx, 0 ,time);
 363                      this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 364                      return false;
 365
 366                 }
 367
 368                 // drag node is parent of child..
 369                 //console.log("SRC TREEPATH: " + src.treepath);
 370                 //console.log("TARGET TREEPATH: " + data.path.to_string());
 371
 372                 // nned to check a  few here..
 373                 //Gtk.TreeViewDropPosition.INTO_OR_AFTER
 374                 //Gtk.TreeViewDropPosition.INTO_OR_BEFORE
 375                 //Gtk.TreeViewDropPosition.AFTER
 376                 //Gtk.TreeViewDropPosition.BEFORE
 377
 378                 // locally dragged items to not really use the
 379                 var selection_text = this.dragData;
 380
 381
 382
 383                 if (selection_text == null || selection_text.length < 1) {
 384                             //print("Error  - drag selection text returned NULL");
 385                          Gdk.drag_status(ctx, 0 ,time);
 386                         this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 387                          return false;
 388                  }
 389
 390
 391                         // see if we are dragging into ourself?
 392                 var target_path = path.to_string();
 393                 print ("Drag  %s onto %s--%d\n ", selection_text, target_path, pos);
 394
 395                 // pos : 3 = ontop - 0 = after, 1 = before
 396                 //print("target_path="+target_path);
 397
 398                 //
 399                 if (selection_text  == target_path) {
 400                     print("self drag ?? == we should perhaps allow copy onto self..\n");
 401
 402                      Gdk.drag_status(ctx, 0 ,time);
 403                       this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 404                       return false;
 405             //                 -- fixme -- this is not really correct..
 406
 407                 }
 408
 409                 // check that
 410                 //print("DUMPING DATA");
 411                 //console.dump(data);
 412                 // path, pos
 413
 414                 //print(data.path.to_string() +' => '+  data.pos);
 415
 416                 // dropList is a list of xtypes that this node could be dropped on.
 417                 // it is set up when we start to drag..
 418
 419
 420                 targetData = _this.model.findDropNodeByPath( path.to_string(), this.dropList, pos);
 421
 422                 print("targetDAta: " + targetData +"\n");
 423
 424                 if (targetData.length < 1) {
 425                     //print("Can not find drop node path");
 426
 427                     Gdk.drag_status(ctx, 0, time);
 428                     this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 429                     return false;
 430                 }
 431
 432                 var td_ar = targetData.split("|");
 433
 434
 435
 436                 Gdk.drag_status(ctx, action ,time);
 437                 this.highlightDropPath(td_ar[0], (Gtk.TreeViewDropPosition)int.parse(td_ar[1]));
 438                 return true;
 439
 440
 441             });
 442             this.el.drag_data_get.connect( ( drag_context, data, info, time) => {
 443
 444
 445                              //print("drag-data-get");
 446                              var s = this.el.get_selection();
 447                              if (s.count_selected_rows() < 1) {
 448                                     data.set_text("",0);
 449                                      print("return empty string - no selection..");
 450                                     return;
 451                                 }
 452
 453                              Gtk.TreeIter iter;
 454                              Gtk.TreeModel mod;
 455
 456                              s.get_selected(out mod, out iter);
 457
 458
 459
 460                              GLib.Value value;
 461                              _this.model.el.get_value(iter, 2, out value);
 462                              var ndata = (JsRender.Node)(value.dup_object());
 463                              var xname = ndata.fqn();
 464
 465
 466                             var tp = mod.get_path(iter).to_string();
 467                             // by default returns the path..
 468
 469                            if ( info != Gdk.Atom.intern("STRING",true) ) {
 470                                 tp = ndata.toJsonString();
 471                            }
 472
 473                            //data.set_text(tp,tp.length);
 474
 475                             data.set (data.get_target (), 8, (uchar[]) tp.to_utf8 ());
 476
 477
 478                            //  print("return " + tp);
 479                         });
 480             this.el.drag_data_received.connect( (ctx, x, y, sel, info, time)  => {
 481
 482                     // THIS CODE ONLY RELATES TO drag  or drop of "NEW" elements or "FROM another tree.."
 483
 484
 485                     //  print("Tree: drag-data-received\n");
 486                     var selection_text = (string)sel.get_data();
 487                     //print("selection_text= %s\n",selection_text);
 488
 489                     var is_drag = this.drag_in_motion;
 490
 491
 492
 493                     print("Is Drag %s\n", is_drag ? "Y": "N");
 494                     var  targetData = "";
 495
 496                     Gtk.TreePath path;
 497                     Gtk.TreeViewDropPosition pos;
 498                     var isOver = _this.view.el.get_dest_row_at_pos(this.drag_x,this.drag_y, out path, out pos);
 499
 500                     // if there are not items in the tree.. the we have to set isOver to true for anything..
 501                     var isEmpty = false;
 502                     if (_this.model.el.iter_n_children(null) < 1) {
 503                         print("got NO children?\n");
 504                         isOver = true; //???
 505                         isEmpty = true;
 506                         pos = Gtk.TreeViewDropPosition.INTO_OR_AFTER;
 507                     }
 508
 509
 510                     //console.log("LEFT-TREE: drag-motion");
 511                     var src = Gtk.drag_get_source_widget(ctx);
 512
 513                     // a drag from self - this should be handled by drop and motion.
 514                     if (src == this.el) {
 515                         print("Source == this element should not happen.. ? \n");
 516                         return;
 517                     }
 518                     //print("drag_data_recieved from another element");
 519
 520
 521
 522
 523                     if (selection_text == null || selection_text.length < 1 || !isOver) {
 524                         // nothing valid foudn to drop...
 525                            print("empty sel text or not over");
 526                         if (is_drag) {
 527                             Gdk.drag_status(ctx, 0, time);
 528                             this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 529                             return;
 530                         }
 531                         Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 532                         // no drop action...
 533                         return;
 534
 535                     }
 536                     var dropNode = new JsRender.Node();
 537
 538                     var dropNodeType  = selection_text;
 539                     var show_templates = true;
 540                     // for drop
 541                     if (dropNodeType[0] == '{') {
 542                         var pa = new Json.Parser();
 543                         pa.load_from_data(dropNodeType);
 544
 545                         dropNode.loadFromJson( pa.get_root().get_object(), 2);
 546                         dropNodeType = dropNode.fqn();
 547                         show_templates = false;
 548
 549
 550                     } else {
 551
 552                         dropNode.setFqn(selection_text);
 553                     }
 554
 555
 556                     // dropList --- need to gather this ...
 557                     print("get dropList for : %s\n",dropNodeType);
 558                     var dropList = _this.model.file.palete().getDropList(dropNodeType);
 559
 560                     print("dropList: %s\n", string.joinv(" , ", dropList));
 561
 562                     // if drag action is link ... then we can drop it anywahere...
 563                      if ((ctx.get_actions() & Gdk.DragAction.LINK) > 0) {
 564                          // if path is null?? dragging into an empty tree?
 565                          targetData = (path == null ? "" :  path.to_string()) + "|%d".printf((int)pos);
 566                      } else {
 567
 568
 569                         targetData = _this.model.findDropNodeByPath( isEmpty ? "" : path.to_string(), dropList, pos);
 570                      }
 571
 572
 573
 574                     print("targetDAta: " + targetData +"\n");
 575
 576                     if (targetData.length < 1) {
 577
 578                         // invalid drop path..
 579                         if (this.drag_in_motion) {
 580                             Gdk.drag_status(ctx, 0, time);
 581                             this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 582                             return;
 583                         }
 584                         Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 585                         // no drop action...
 586                         return;
 587                     }
 588                     // valid drop path..
 589
 590                       var td_ar = targetData.split("|");
 591
 592
 593                     if (this.drag_in_motion) {
 594                         Gdk.drag_status(ctx, Gdk.DragAction.COPY ,time);
 595
 596                         this.highlightDropPath(  td_ar[0]  , (Gtk.TreeViewDropPosition)int.parse(td_ar[1]));
 597                         return;
 598                     }
 599                     // continue on to allow drop..
 600
 601
 602                     // at this point, drag is not in motion... -- as checked above... - so it's a real drop event..
 603
 604
 605                     _this.model.dropNode(targetData, dropNode, show_templates);
 606                     print("ADD new node!!!\n");
 607
 608                     ///Xcls_DialogTemplateSelect.singleton().show( _this.model.file.palete(), node);
 609
 610                     Gtk.drag_finish (ctx, false, false,time);
 611
 612
 613
 614
 615
 616             });
 617             this.el.drag_drop.connect( (  ctx, x, y, time)  => {
 618                   //Seed.print("TARGET: drag-drop");
 619
 620
 621                 var src = Gtk.drag_get_source_widget(ctx);
 622
 623                if (src != this.el) {
 624
 625
 626
 627                    this.drag_in_motion = false;
 628                         // request data that will be recieved by the recieve...
 629                     Gtk.drag_get_data
 630                     (
 631                             this.el,         // will receive 'drag-data-received' signal
 632                             ctx,        // represents the current state of the DnD
 633                             Gdk.Atom.intern("application/json",true),    // the target type we want
 634                             time            // time stamp
 635                     );
 636
 637
 638                     // No target offered by source => error
 639
 640
 641                      return  false;
 642                  }
 643
 644                  // handle drop around self..
 645
 646
 647
 648                 //print("GETTING POS");
 649                 var  targetData = "";
 650
 651                 Gtk.TreePath path;
 652                 Gtk.TreeViewDropPosition pos;
 653                 var isOver = _this.view.el.get_dest_row_at_pos(this.drag_x,this.drag_y, out path, out pos);
 654
 655                 // if there are not items in the tree.. the we have to set isOver to true for anything..
 656                 var isEmpty = false;
 657                 if (_this.model.el.iter_n_children(null) < 1) {
 658                     print("got NO children?\n");
 659                     isOver = true; //???
 660                     isEmpty = true;
 661                     pos = Gtk.TreeViewDropPosition.INTO_OR_AFTER;
 662                 }
 663
 664
 665
 666                 //var action = Gdk.DragAction.COPY;
 667                     // unless we are copying!!! ctl button..
 668
 669                 var action = (ctx.get_actions() & Gdk.DragAction.MOVE) > 0 ?
 670                              Gdk.DragAction.COPY  : Gdk.DragAction.MOVE ;
 671                             // Gdk.DragAction.MOVE : Gdk.DragAction.COPY ;
 672
 673
 674                 if (_this.model.el.iter_n_children(null) < 1) {
 675                     // no children.. -- asume it's ok..
 676
 677                     targetData = "|%d|".printf((int)Gtk.TreeViewDropPosition.INTO_OR_AFTER);
 678
 679                     // continue through to allow drop...
 680
 681                 } else {
 682
 683
 684
 685
 686
 687                             //print("ISOVER? " + isOver);
 688                     if (!isOver) {
 689
 690                         Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 691                         return true; // not over apoint!?! - no action on drop or motion..
 692                     }
 693
 694                     // drag node is parent of child..
 695                     //console.log("SRC TREEPATH: " + src.treepath);
 696                     //console.log("TARGET TREEPATH: " + data.path.to_string());
 697
 698                     // nned to check a  few here..
 699                     //Gtk.TreeViewDropPosition.INTO_OR_AFTER
 700                     //Gtk.TreeViewDropPosition.INTO_OR_BEFORE
 701                     //Gtk.TreeViewDropPosition.AFTER
 702                     //Gtk.TreeViewDropPosition.BEFORE
 703
 704                     // locally dragged items to not really use the
 705                     var selection_text = this.dragData;
 706
 707
 708
 709                     if (selection_text == null || selection_text.length < 1) {
 710                         //print("Error  - drag selection text returned NULL");
 711
 712                          Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 713                          return true; /// -- fixme -- this is not really correct..
 714                     }
 715
 716                             // see if we are dragging into ourself?
 717                             print ("got selection text of  " + selection_text);
 718
 719                     var target_path = path.to_string();
 720                     //print("target_path="+target_path);
 721
 722                     //
 723                     if (selection_text  == target_path) {
 724                         print("self drag ?? == we should perhaps allow copy onto self..\n");
 725
 726                          Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 727
 728                          return true; /// -- fixme -- this is not really correct..
 729
 730                     }
 731
 732                     // check that
 733                     //print("DUMPING DATA");
 734                     //console.dump(data);
 735                     // path, pos
 736
 737                     //print(data.path.to_string() +' => '+  data.pos);
 738
 739                     // dropList is a list of xtypes that this node could be dropped on.
 740                     // it is set up when we start to drag..
 741
 742
 743                     targetData = _this.model.findDropNodeByPath( path.to_string(), this.dropList, pos);
 744
 745                     print("targetDAta: " + targetData +"\n");
 746
 747                     if (targetData.length < 1) {
 748                         //print("Can not find drop node path");
 749
 750                         Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 751                         return true;
 752                     }
 753
 754                     var td_ar = targetData.split("|");
 755
 756
 757
 758                             // continue on to allow drop..
 759               }
 760                     // at this point, drag is not in motion... -- as checked above... - so it's a real drop event..
 761
 762
 763                  var delete_selection_data = false;
 764
 765                 if (action == Gdk.DragAction.ASK)  {
 766                     /* Ask the user to move or copy, then set the ctx action. */
 767                 }
 768
 769                 if (action == Gdk.DragAction.MOVE) {
 770                     delete_selection_data = true;
 771                 }
 772
 773                             // drag around.. - reorder..
 774                 _this.model.moveNode(targetData, action);
 775
 776
 777
 778
 779
 780                     // we can send stuff to souce here...
 781
 782
 783             // do we always say failure, so we handle the reall drop?
 784                 Gtk.drag_finish (ctx, false, false,time); //delete_selection_data, time);
 785
 786                 return true;
 787
 788
 789
 790
 791
 792
 793             });
 794         }
 795
 796         // user defined functions
 797         public           void highlightDropPath ( string treepath, Gtk.TreeViewDropPosition pos) {
 798
 799                 // highlighting for drag/drop
 800                 if (treepath.length > 0) {
 801                     this.el.set_drag_dest_row(  new  Gtk.TreePath.from_string( treepath ), pos);
 802                   } else {
 803                     this.el.set_drag_dest_row(null, Gtk.TreeViewDropPosition.INTO_OR_AFTER);
 804                  }
 805
 806         }
 807         public           void selectNode (string treepath_str) {
 808             //this.selection.select_path(new  Gtk.TreePath.from_string( treepath_str));
 809              var tp = new Gtk.TreePath.from_string(treepath_str);
 810
 811              this.el.set_cursor(tp, null, false);
 812              this.el.scroll_to_cell(tp, null, false, 0,0);
 813         }
 814     }
 815     public class Xcls_model : Object
 816     {
 817         public Gtk.TreeStore el;
 818         private Xcls_WindowLeftTree  _this;
 819
 820
 821             // my vars (def)
 822         public DialogTemplateSelect template_select;
 823         public JsRender.JsRender? file;
 824         public string activePath;
 825         public Project.Project? project;
 826
 827         // ctor
 828         public Xcls_model(Xcls_WindowLeftTree _owner )
 829         {
 830             _this = _owner;
 831             _this.model = this;
 832             this.el = new Gtk.TreeStore( 3, typeof(string),typeof(string),typeof(Object) );
 833
 834             // my vars (dec)
 835             this.template_select = null;
 836             this.file = null;
 837             this.activePath = "";
 838             this.project = null;
 839
 840             // set gobject values
 841
 842             // init method
 843
 844             print("model initialized");
 845         }
 846
 847         // user defined functions
 848         public           string findDropNode (string treepath_str, string[] targets) {
 849
 850             // this is used by the dragdrop code in the roo version AFAIR..
 851
 852             //var path = treepath_str.replace(/^builder-/, '');
 853             // treemap is depreciated... - should really check if model has any entries..
 854
 855             if (this.el.iter_n_children(null) < 1) {
 856                 //print("NO KEYS");
 857                 return "|%d".printf((int)Gtk.TreeViewDropPosition.INTO_OR_AFTER);
 858             }
 859             //print("FIND treepath: " + path);
 860             //console.dump(this.treemap);
 861
 862             //if (!treepath_str.match(/^builder-/)) {
 863             //    return []; // nothing!
 864             //}
 865             if (targets.length > 0 && targets[0] == "*") {
 866                 return  treepath_str;
 867             }
 868             return this.findDropNodeByPath(treepath_str,targets, -1);
 869         }
 870         public           void loadFile (JsRender.JsRender f) {
 871             //console.dump(f);
 872             this.el.clear();
 873             this.file = f;
 874
 875
 876         //    if (!f) {
 877         //        console.log('missing file');
 878         //        return;
 879         //    }
 880
 881             // load the file if not loaded..
 882             if (f.tree == null) {
 883                 f.loadItems( );
 884             }
 885             // if it's still null?
 886             if (f.tree == null) {
 887                 return;
 888             }
 889
 890             /// this.get('/Window').setTitle(f.project.getName() + ' - ' + f.name);
 891
 892             //if (f.items.length && typeof(f.items[0]) == 'string') {
 893
 894                 //this.get('/RightEditor').el.show();
 895                 //this.get('/RightEditor.view').load( f.items[0]);
 896             //    return;
 897             //}
 898             //print("LOAD");
 899             //print(JSON.stringify(f.items, null,4));
 900             //console.dump(f.items);
 901             var o = new Gee.ArrayList<JsRender.Node>();
 902             o.add(f.tree);
 903             this.load(o,null);
 904
 905             _this.view.el.expand_all();
 906
 907             if (f.tree.items.size < 1) {
 908                 // single item..
 909
 910                 //this.get('/Window.leftvpaned').el.set_position(80);
 911                 // select first...
 912                 _this.view.el.set_cursor(
 913                     new  Gtk.TreePath.from_string("0"), null, false);
 914
 915
 916             } else {
 917                   //this.get('/Window.leftvpaned').el.set_position(200);
 918             }
 919
 920             return;
 921             /*
 922
 923             //print("hide right editior");
 924             //this.get('/RightEditor').el.hide();
 925             //this.get('/Editor').el.hide();
 926             //print("set current tree");
 927             //this.currentTree = this.toJS(false, false)[0];
 928             //console.dump(this.currentTree);
 929             //this.currentTree = this.currentTree || { items: [] };
 930             //_this.renderView();
 931             //console.dump(this.map);
 932             //var RightPalete     = imports.Builder.RightPalete.RightPalete;
 933
 934
 935             var pm = this.get('/RightPalete.model');
 936             // set up provider..
 937
 938             this.get('/RightPalete').provider = this.get('/LeftTree').getPaleteProvider();
 939
 940             if (!this.get('/RightPalete').provider) {
 941                 print ("********* PALETE PROVIDER MISSING?!!");
 942             }
 943             this.get('/LeftTree').renderView();
 944
 945             pm.load( this.get('/LeftTree').getPaleteProvider().gatherList(this.listAllTypes()));
 946
 947
 948
 949             this.get('/Window.view-notebook').el.set_current_page(
 950                 this.get('/LeftTree.model').file.getType()== 'Roo' ? 0 : -1);
 951                 */
 952
 953         }
 954         public    void updateSelected () {
 955
 956
 957             var s = _this.view.el.get_selection();
 958
 959              Gtk.TreeIter iter;
 960             Gtk.TreeModel mod;
 961
 962
 963
 964             if (!s.get_selected(out mod, out iter)) {
 965                 return; // nothing seleted..
 966             }
 967
 968           GLib.Value value;
 969             this.el.get_value(iter, 2, out value);
 970             var node = (JsRender.Node)(value.get_object());
 971
 972               this.el.set(iter, 0, node.nodeTitle(),
 973                         1, node.nodeTip(), -1
 974                 );
 975         }
 976         public           string findDropNodeByPath (string treepath_str, string[] targets, int in_pref = -1) {
 977
 978             var path = treepath_str; // dupe it..
 979
 980
 981             // pref : 3 = ontop - 0 = after, 1 = before
 982             int pref = in_pref < 0  ?  Gtk.TreeViewDropPosition.INTO_OR_AFTER : in_pref;
 983
 984             var last = "";
 985
 986             //console.dump(this.treemap);
 987
 988             print("findDropNodeByPath : got path length %d / %s\n", path.length, path);
 989
 990             if (path.length == 0) {
 991                 // top drop. // just return empty..
 992                 return "|%d".printf((int)pref) ;
 993
 994             }
 995
 996
 997             while (path.length > 0) {
 998
 999                 if (path.length == treepath_str.length && pref != Gtk.TreeViewDropPosition.INTO_OR_AFTER) {
1000                     if (path.last_index_of(":") < 0 ) {
1001                         return "";
1002                     }
1003                     path = path.substring(0, path.last_index_of(":"));
1004                     last = treepath_str;
1005                     print("DROP  before or after : using %s\n",path);
1006                     continue;
1007                 }
1008
1009                 //print("LOOKING FOR PATH: " + path);
1010                 var node_data = this.pathToNode(path);
1011
1012                 if (node_data == null) {
1013                     print("node not found");
1014                     return "";
1015                 }
1016
1017                 var xname = node_data.fqn();
1018                 var match = "";
1019                 var prop = "";
1020
1021                 for (var i =0; i < targets.length; i++)  {
1022                     var tg = targets[i];
1023                     if ((tg == xname)  ) {
1024                         match = tg;
1025                         break;
1026                     }
1027                     // if target is "xxxx:name"
1028                     if (tg.contains(xname +":")) {
1029                         match = tg;
1030                         var ar = tg.split(":");
1031                         prop = ar[1];
1032                         break;
1033                     }
1034                 }
1035
1036                 if (match.length > 0) {
1037                     if (last.length > 0) { // pref is after/before..
1038                         // then it's after last
1039                         //if (pref > 1) {
1040                         //    return "";
1041                         //}
1042                         return last + "|%d".printf((int)pref) + "|" + prop;
1043
1044
1045                     }
1046                     // we need to add prop - as :store -> needs to bee added when dropping onto.
1047                     return path + "|%d".printf( (int) Gtk.TreeViewDropPosition.INTO_OR_AFTER)  + "|" + prop;
1048                 }
1049                 /*
1050                 last = "" + path;
1051                 var par = path.split(":");
1052                 string [] ppar = {};
1053                 for (var i = 0; i < par.length-1; i++) {
1054                     ppar += par[i];
1055                 }
1056
1057                 path = string.joinv(":", ppar);
1058                 */
1059                 break;
1060
1061             }
1062
1063             return "";
1064
1065         }
1066         public           void moveNode (string target_data, Gdk.DragAction action)
1067         {
1068
1069            /// target_data = "path|pos");
1070
1071
1072             //print("MOVE NODE");
1073             // console.dump(target_data);
1074             Gtk.TreeIter old_iter;
1075             Gtk.TreeModel mod;
1076
1077             var s = _this.view.el.get_selection();
1078             s.get_selected(out mod , out old_iter);
1079             mod.get_path(old_iter);
1080
1081             var node = this.pathToNode(mod.get_path(old_iter).to_string());
1082             //console.dump(node);
1083             if (node == null) {
1084                 print("moveNode: ERROR - node is null?");
1085             }
1086
1087
1088
1089             // needs to drop first, otherwise the target_data
1090             // treepath will be invalid.
1091
1092
1093             if ((action & Gdk.DragAction.MOVE) > 0) {
1094                     print("REMOVING OLD NODE : " + target_data + "\n");
1095                     node.remove();
1096                     this.dropNode(target_data, node, false);
1097                     this.el.remove(ref old_iter);
1098
1099
1100
1101             } else {
1102                 print("DROPPING NODE // copy: " + target_data + "\n");
1103                 node = node.deepClone();
1104                 this.dropNode(target_data, node, false);
1105             }
1106             _this.changed();
1107             this.activePath= "";
1108             //this.updateNode(false,true);
1109         }
1110         public           void load (Gee.ArrayList<JsRender.Node> tr, Gtk.TreeIter? iter)
1111         {
1112             Gtk.TreeIter citer;
1113             //this.insert(citer,iter,0);
1114             for(var i =0 ; i < tr.size; i++) {
1115                 if (iter != null) {
1116                     this.el.insert(out citer,iter,-1); // why not append?
1117                 } else {
1118                     this.el.append(out citer,null);
1119                 }
1120
1121                 this.el.set(citer, 0, tr.get(i).nodeTitle(),
1122                         1, tr.get(i).nodeTip(), -1
1123                 );
1124                 var o = new GLib.Value(typeof(Object));
1125                 o.set_object((Object)tr.get(i));
1126
1127                 this.el.set_value(citer, 2, o);
1128
1129                 if (tr.get(i).items.size > 0) {
1130                     this.load(tr.get(i).items, citer);
1131                 }
1132
1133             }
1134
1135
1136         }
1137         public           void deleteSelected () {
1138
1139             print("DELETE SELECTED?");
1140             //_this.view.blockChanges = true;
1141             print("GET SELECTION?");
1142
1143             var s = _this.view.el.get_selection();
1144
1145             print("GET  SELECTED?");
1146            Gtk.TreeIter iter;
1147             Gtk.TreeModel mod;
1148
1149
1150             if (!s.get_selected(out mod, out iter)) {
1151                 return; // nothing seleted..
1152             }
1153
1154
1155
1156             this.activePath= "";
1157             print("GET  vnode value?");
1158
1159             GLib.Value value;
1160             this.el.get_value(iter, 2, out value);
1161             var data = (JsRender.Node)(value.get_object());
1162             print("removing node from Render\n");
1163             if (data.parent == null) {
1164                 this.file.tree = null;
1165             } else {
1166                 data.remove();
1167             }
1168             print("removing node from Tree\n");
1169             s.unselect_all();
1170             this.el.remove(ref iter);
1171
1172
1173
1174
1175             //
1176
1177
1178
1179
1180             this.activePath= ""; // again!?!?
1181             //this.changed(null,true);
1182
1183             _this.changed();
1184
1185             _this.view.blockChanges = false;
1186         }
1187         public           JsRender.Node pathToNode (string path) {
1188
1189
1190              Gtk.TreeIter   iter;
1191              _this.model.el.get_iter_from_string(out iter, path);
1192
1193              GLib.Value value;
1194              _this.model.el.get_value(iter, 2, out value);
1195
1196              return (JsRender.Node)value.dup_object();
1197
1198         }
1199         public           void dropNode (string target_data_str, JsRender.Node node, bool show_templates) {
1200         //         print("drop Node");
1201              // console.dump(node);
1202           //    console.dump(target_data);
1203
1204
1205                 // 0 = before , 1=after 2/3 onto
1206
1207
1208                 var target_data= target_data_str.split("|");
1209
1210                 var parent_str = target_data[0].length > 0 ? target_data[0] : "";
1211                 var pos = target_data.length > 1 ? int.parse(target_data[1]) : 2; // ontop..
1212
1213
1214                 Gtk.TreePath tree_path  =   parent_str.length > 0 ? new  Gtk.TreePath.from_string( parent_str ) : null;
1215
1216
1217
1218                 //print("add " + tp + "@" + target_data[1]  );
1219
1220                 JsRender.Node parentNode = null;
1221
1222                 Gtk.TreeIter iter_after;
1223                 Gtk.TreeIter iter_par ;
1224
1225
1226                  if (target_data.length == 3 && target_data[2].length > 0) {
1227                     node.props.set("* prop", target_data[2]);
1228                 }
1229
1230                 Gtk.TreePath expand_parent = null;
1231
1232                 // we only need to show the template if it's come from else where?
1233                  if (show_templates) {
1234
1235                     if (this.template_select == null) {
1236                         this.template_select = new DialogTemplateSelect();
1237                      }
1238
1239                      var node = this.template_select.show(
1240                           (Gtk.Window) _this.el.get_toplevel (),
1241                               this.file.palete(),
1242                            node);
1243
1244                      if (node == null) {
1245                          return; // do not add?
1246                      }
1247                 }
1248
1249                  //print("pos is %d  \n".printf(pos));
1250
1251                  Gtk.TreeIter n_iter;
1252
1253                  if ( parent_str.length < 1) {
1254                       this.el.append(out n_iter, null); // drop at top level..
1255                       node.parent = null;
1256                       this.file.tree = node;
1257
1258
1259                 } else   if (pos  < 2) {
1260                     //print(target_data[1]  > 0 ? 'insert_after' : 'insert_before');
1261
1262                     this.el.get_iter(out iter_after, tree_path );
1263                     this.el.iter_parent(out iter_par, iter_after);
1264                     expand_parent = this.el.get_path(iter_par);
1265
1266                     GLib.Value value;
1267                     this.el.get_value( iter_par, 2, out value);
1268                     parentNode =  (JsRender.Node)value.dup_object();
1269
1270
1271                     this.el.get_value( iter_after, 2, out value);
1272                     var relNode =  (JsRender.Node)value.dup_object();
1273
1274                     if ( pos  > 0 ) {
1275
1276                         this.el.insert_after(out n_iter,    iter_par  , iter_after);
1277                         var ix = parentNode.items.index_of(relNode);
1278                         parentNode.items.insert(ix+1, node);
1279
1280                     } else {
1281                         this.el.insert_before(out n_iter,  iter_par  , iter_after);
1282                         var ix = parentNode.items.index_of(relNode);
1283                         parentNode.items.insert(ix, node);
1284
1285                     }
1286                     node.parent = parentNode;
1287
1288
1289
1290                 } else {
1291                    //  print("appending to  " + parent_str);
1292                     this.el.get_iter(out iter_par, tree_path);
1293                     this.el.append(out n_iter,   iter_par );
1294                     expand_parent = this.el.get_path(iter_par);
1295
1296                     GLib.Value value;
1297                     this.el.get_value( iter_par, 2, out value);
1298                     parentNode =  (JsRender.Node)value.dup_object();
1299                     node.parent = parentNode;
1300                     parentNode.items.add(node);
1301                 }
1302
1303                 // reparent node in tree...
1304
1305
1306                 // why only on no parent???
1307
1308                 //if (node.parent = null) {
1309
1310
1311
1312                 //}
1313
1314
1315                 // work out what kind of packing to use.. -- should be in
1316                 if (!node.has("pack")   && parent_str.length > 1) {
1317
1318                     this.file.palete().fillPack(node,parentNode);
1319
1320
1321                 }
1322
1323                 // add the node...
1324
1325                 this.el.set(n_iter, 0, node.nodeTitle(), 1, node.nodeTip(), -1  );
1326                 var o = new GLib.Value(typeof(Object));
1327                 o.set_object((Object)node);
1328
1329                 this.el.set_value(n_iter, 2, o);
1330
1331
1332
1333
1334         // load children - if it has any..
1335
1336                 if (node.items.size > 0) {
1337                     this.load(node.items, n_iter);
1338                     _this.view.el.expand_row(this.el.get_path(n_iter), true);
1339                 } else if (expand_parent != null && !_this.view.el.is_row_expanded(expand_parent)) {
1340                    _this.view.el.expand_row(expand_parent,true);
1341                 }
1342
1343                 //if (tp != null && (node.items.length() > 0 || pos > 1)) {
1344                 //    _this.view.el.expand_row(this.el.get_path(iter_par), true);
1345                // }
1346                 // wee need to get the empty proptypes from somewhere..
1347
1348                 //var olditer = this.activeIter;
1349                 this.activePath = this.el.get_path(n_iter).to_string();
1350
1351
1352
1353
1354                 _this.view.el.set_cursor(this.el.get_path(n_iter), null, false);
1355                 _this.changed();
1356
1357
1358
1359         }
1360     }
1361     public class Xcls_TreeViewColumn4 : Object
1362     {
1363         public Gtk.TreeViewColumn el;
1364         private Xcls_WindowLeftTree  _this;
1365
1366
1367             // my vars (def)
1368
1369         // ctor
1370         public Xcls_TreeViewColumn4(Xcls_WindowLeftTree _owner )
1371         {
1372             _this = _owner;
1373             this.el = new Gtk.TreeViewColumn();
1374
1375             // my vars (dec)
1376
1377             // set gobject values
1378             this.el.title = "test";
1379             var child_0 = new Xcls_renderer( _this );
1380             child_0.ref();
1381             this.el.pack_start (  child_0.el , true );
1382
1383             // init method
1384
1385             this.el.add_attribute(_this.renderer.el , "markup", 0 );
1386         }
1387
1388         // user defined functions
1389     }
1390     public class Xcls_renderer : Object
1391     {
1392         public Gtk.CellRendererText el;
1393         private Xcls_WindowLeftTree  _this;
1394
1395
1396             // my vars (def)
1397
1398         // ctor
1399         public Xcls_renderer(Xcls_WindowLeftTree _owner )
1400         {
1401             _this = _owner;
1402             _this.renderer = this;
1403             this.el = new Gtk.CellRendererText();
1404
1405             // my vars (dec)
1406
1407             // set gobject values
1408         }
1409
1410         // user defined functions
1411     }
1412     public class Xcls_LeftTreeMenu : Object
1413     {
1414         public Gtk.Menu el;
1415         private Xcls_WindowLeftTree  _this;
1416
1417
1418             // my vars (def)
1419
1420         // ctor
1421         public Xcls_LeftTreeMenu(Xcls_WindowLeftTree _owner )
1422         {
1423             _this = _owner;
1424             _this.LeftTreeMenu = this;
1425             this.el = new Gtk.Menu();
1426
1427             // my vars (dec)
1428
1429             // set gobject values
1430             var child_0 = new Xcls_MenuItem7( _this );
1431             child_0.ref();
1432             this.el.add (  child_0.el  );
1433             var child_1 = new Xcls_MenuItem8( _this );
1434             child_1.ref();
1435             this.el.add (  child_1.el  );
1436             var child_2 = new Xcls_MenuItem9( _this );
1437             child_2.ref();
1438             this.el.add (  child_2.el  );
1439         }
1440
1441         // user defined functions
1442     }
1443     public class Xcls_MenuItem7 : Object
1444     {
1445         public Gtk.MenuItem el;
1446         private Xcls_WindowLeftTree  _this;
1447
1448
1449             // my vars (def)
1450
1451         // ctor
1452         public Xcls_MenuItem7(Xcls_WindowLeftTree _owner )
1453         {
1454             _this = _owner;
1455             this.el = new Gtk.MenuItem();
1456
1457             // my vars (dec)
1458
1459             // set gobject values
1460             this.el.label = "Delete Element";
1461
1462             // listeners
1463             this.el.activate.connect( ( ) => {
1464
1465                 print("ACTIVATE?");
1466
1467
1468                  _this.model.deleteSelected();
1469             });
1470         }
1471
1472         // user defined functions
1473     }
1474     public class Xcls_MenuItem8 : Object
1475     {
1476         public Gtk.MenuItem el;
1477         private Xcls_WindowLeftTree  _this;
1478
1479
1480             // my vars (def)
1481
1482         // ctor
1483         public Xcls_MenuItem8(Xcls_WindowLeftTree _owner )
1484         {
1485             _this = _owner;
1486             this.el = new Gtk.MenuItem();
1487
1488             // my vars (dec)
1489
1490             // set gobject values
1491             this.el.label = "Save as Template";
1492
1493             // listeners
1494             this.el.activate.connect( () => {
1495
1496                  DialogSaveTemplate.singleton().show(
1497                         (Gtk.Window) _this.el.get_toplevel (),
1498                         _this.model.file.palete(),
1499                         _this.getActiveElement()
1500                 );
1501
1502
1503             });
1504         }
1505
1506         // user defined functions
1507     }
1508     public class Xcls_MenuItem9 : Object
1509     {
1510         public Gtk.MenuItem el;
1511         private Xcls_WindowLeftTree  _this;
1512
1513
1514             // my vars (def)
1515
1516         // ctor
1517         public Xcls_MenuItem9(Xcls_WindowLeftTree _owner )
1518         {
1519             _this = _owner;
1520             this.el = new Gtk.MenuItem();
1521
1522             // my vars (dec)
1523
1524             // set gobject values
1525             this.el.label = "Save as Module";
1526
1527             // listeners
1528             this.el.activate.connect( () => {
1529                 var node = _this.getActiveElement();
1530                  var name = DialogSaveModule.singleton().show(
1531                         (Gtk.Window) _this.el.get_toplevel (),
1532                         _this.model.file.project,
1533                         node
1534                  );
1535                  if (name.length < 1) {
1536                         return;
1537
1538                  }
1539                  node.props.set("* xinclude", name);
1540                  node.items.clear();
1541
1542
1543                 var s = _this.view.el.get_selection();
1544
1545                 print("GET  SELECTED?");
1546                 Gtk.TreeIter iter;
1547                 Gtk.TreeModel mod;
1548
1549
1550                 if (!s.get_selected(out mod, out iter)) {
1551                     return; // nothing seleted..
1552                 }
1553                 Gtk.TreeIter citer;
1554                 var n_cn = mod.iter_n_children(iter) -1;
1555                 for (var i = n_cn; i > -1; i--) {
1556                     mod.iter_nth_child(out citer, iter, i);
1557
1558
1559                     print("removing node from Tree\n");
1560
1561                     _this.model.el.remove(ref citer);
1562                 }
1563                 _this.changed();
1564                 _this.node_selected(node);
1565
1566
1567             });
1568         }
1569
1570         // user defined functions
1571     }
1572 }