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     // user defined functions
  48     public           JsRender.Node? getActiveElement () { // return path to actie node.
  49
  50          var path = this.getActivePath();
  51          if (path.length < 1) {
  52             return null;
  53          }
  54          return _this.model.pathToNode(path);
  55
  56     }
  57     public           JsRender.JsRender getActiveFile () {
  58         return this.model.file;
  59     }
  60     public           string getActivePath () {
  61         var model = this.model;
  62         var view = this.view.el;
  63         if (view.get_selection().count_selected_rows() < 1) {
  64             return "";
  65         }
  66         Gtk.TreeIter iter;
  67         Gtk.TreeModel mod;
  68         view.get_selection().get_selected(out mod, out iter);
  69         return mod.get_path(iter).to_string();
  70     }
  71     public class Xcls_view : Object
  72     {
  73         public Gtk.TreeView el;
  74         private Xcls_WindowLeftTree  _this;
  75
  76
  77             // my vars (def)
  78         public string dragData;
  79         public string[] dropList;
  80         public int drag_x;
  81         public int drag_y;
  82         public bool drag_in_motion;
  83         public bool blockChanges;
  84
  85         // ctor
  86         public Xcls_view(Xcls_WindowLeftTree _owner )
  87         {
  88             _this = _owner;
  89             _this.view = this;
  90             this.el = new Gtk.TreeView();
  91
  92             // my vars (dec)
  93             this.blockChanges = false;
  94
  95             // set gobject values
  96             this.el.tooltip_column = 1;
  97             this.el.enable_tree_lines = true;
  98             this.el.headers_visible = false;
  99             var child_0 = new Xcls_model( _this );
 100             child_0.ref();
 101             this.el.set_model (  child_0.el  );
 102             var child_1 = new Xcls_TreeViewColumn4( _this );
 103             child_1.ref();
 104             this.el.append_column (  child_1.el  );
 105
 106             // init method
 107
 108             {
 109                 var description = new Pango.FontDescription();
 110                 description.set_size(8000);
 111                 this.el.modify_font(description);
 112
 113                 var selection = this.el.get_selection();
 114                 selection.set_mode( Gtk.SelectionMode.SINGLE);
 115
 116
 117                 // is this really needed??
 118                 /*
 119                 this.selection.signal['changed'].connect(function() {
 120                     _this.get('/LeftTree.view').listeners.cursor_changed.apply(
 121                         _this.get('/LeftTree.view'), [ _this.get('/LeftTree.view'), '']
 122                     );
 123                 });
 124                 */
 125                 Gtk.drag_source_set (
 126                     this.el,            /* widget will be drag-able */
 127                     Gdk.ModifierType.BUTTON1_MASK,       /* modifier that will start a drag */
 128                     BuilderApplication.targetList,            /* lists of target to support */
 129                     Gdk.DragAction.COPY   | Gdk.DragAction.MOVE    |  Gdk.DragAction.LINK           /* what to do with data after dropped */
 130                 );
 131
 132                 // ?? needed??
 133                 //Gtk.drag_source_add_text_targets(this.el);
 134
 135                 Gtk.drag_dest_set
 136                 (
 137                     this.el,              /* widget that will accept a drop */
 138                     Gtk.DestDefaults.MOTION  | Gtk.DestDefaults.HIGHLIGHT,
 139                     BuilderApplication.targetList,            /* lists of target to support */
 140                     Gdk.DragAction.COPY   | Gdk.DragAction.MOVE   | Gdk.DragAction.LINK     /* what to do with data after dropped */
 141                 );
 142
 143                 //Gtk.drag_dest_set_target_list(this.el, Builder.Application.targetList);
 144                 //Gtk.drag_dest_add_text_targets(this.el);
 145             }
 146             // listeners
 147             this.el.button_press_event.connect( ( ev) => {
 148                 //console.log("button press?");
 149                 if (! _this.before_node_change(null) ) {
 150                    return true;
 151                 }
 152
 153
 154                 if (ev.type != Gdk.EventType.BUTTON_PRESS  || ev.button != 3) {
 155                     //print("click" + ev.type);
 156                     return false;
 157                 }
 158                 Gtk.TreePath res;
 159                 if (!_this.view.el.get_path_at_pos((int)ev.x,(int)ev.y, out res, null, null, null) ) {
 160                     return true;
 161                 }
 162
 163                 this.el.get_selection().select_path(res);
 164
 165                   //if (!this.get('/LeftTreeMenu').el)  {
 166                   //      this.get('/LeftTreeMenu').init();
 167                   //  }
 168
 169                  _this.LeftTreeMenu.el.set_screen(Gdk.Screen.get_default());
 170                  _this.LeftTreeMenu.el.show_all();
 171                   _this.LeftTreeMenu.el.popup(null, null, null,  3, ev.time);
 172                  //   print("click:" + res.path.to_string());
 173                   return true;
 174             });
 175             this.el.cursor_changed.connect( ( ) => {
 176
 177
 178                  if (this.blockChanges) { // probably not needed..
 179                    return  ;
 180                  }
 181                   if (!_this.before_node_change(null) ) {
 182                      this.blockChanges = true;
 183                      this.el.get_selection().unselect_all();
 184                      this.blockChanges = false;
 185                      return;
 186                  }
 187                  if (_this.model.file == null) {
 188                      return;
 189                  }
 190
 191                  //var render = this.get('/LeftTree').getRenderer();
 192                 print("LEFT TREE -> view -> selection changed called\n");
 193
 194
 195                 // -- it appears that the selection is not updated.
 196
 197                 GLib.Timeout.add_full(GLib.Priority.DEFAULT,10 , () => {
 198
 199
 200                         if (this.el.get_selection().count_selected_rows() < 1) {
 201
 202                             print("selected rows < 1\n");
 203                             //??this.model.load( false);
 204                             _this.node_selected(null);
 205
 206                             return false ;
 207                         }
 208
 209                             //console.log('changed');
 210                         var s = this.el.get_selection();
 211                          Gtk.TreeIter iter;
 212                          Gtk.TreeModel mod;
 213                         s.get_selected(out mod, out iter);
 214
 215
 216                         // var val = "";
 217                         GLib.Value value;
 218                         _this.model.el.get_value(iter, 2, out value);
 219                         _this.model.activePath = mod.get_path(iter).to_string();
 220
 221                         var node = (JsRender.Node)value.dup_object();
 222                         _this.node_selected(node);
 223                         return false;
 224                   });
 225                 //_this.after_node_change(node);
 226
 227             //        _this.model.file.changed(node, "tree");
 228
 229                 //Seed.print( value.get_string());
 230                 return  ;
 231
 232             });
 233             this.el.drag_begin.connect( ( ctx)  => {
 234                 //print('SOURCE: drag-begin');
 235
 236
 237                     //this.targetData = "";
 238
 239                     // find what is selected in our tree...
 240
 241                     var s = _this.view.el.get_selection();
 242                     if (s.count_selected_rows() < 1) {
 243                         return;
 244                     }
 245                     Gtk.TreeIter iter;
 246                     Gtk.TreeModel mod;
 247                     s.get_selected(out mod, out iter);
 248
 249
 250
 251                     // set some properties of the tree for use by the dropped element.
 252                     GLib.Value value;
 253                     _this.model.el.get_value(iter, 2, out value);
 254                     var tp = mod.get_path(iter).to_string();
 255                     var data = (JsRender.Node)(value.dup_object());
 256                     var xname = data.fqn();
 257                     print ("XNAME  IS " + xname+ "\n");
 258                     this.dragData = tp;
 259                     this.dropList = _this.model.file.palete().getDropList(xname);
 260
 261                     print ("DROP LIST IS " + string.joinv(", ", this.dropList) + "\n");
 262
 263
 264                     // make the drag icon a picture of the node that was selected
 265
 266
 267                 // by default returns the path..
 268                    var path = _this.model.el.get_path(iter);
 269
 270
 271                     var pix = this.el.create_row_drag_icon ( path);
 272
 273                     Gtk.drag_set_icon_surface (ctx, pix) ;
 274
 275                     return;
 276             });
 277             this.el.drag_end.connect( (drag_context) => {
 278                 //Seed.print('LEFT-TREE: drag-end');
 279                     this.dragData = "";
 280                     this.dropList = null;
 281             //        this.targetData = "";
 282                     this.highlightDropPath("",0);
 283             //        return true;
 284             });
 285             this.el.drag_motion.connect( ( ctx, x, y, time)  => {
 286                print("got drag motion\n");
 287                 var src = Gtk.drag_get_source_widget(ctx);
 288                this.drag_x = x;
 289                this.drag_y = y;
 290
 291                if (src != this.el) {
 292
 293
 294
 295                 // the point of this is to detect where an item could be dropped..
 296                     print("requesting drag data\n");
 297                    this.drag_in_motion = true;
 298
 299                         // request data that will be recieved by the recieve...
 300                     Gtk.drag_get_data
 301                     (
 302                             this.el,         // will receive 'drag-data-received' signal
 303                             ctx,        // represents the current state of the DnD
 304                             Gdk.Atom.intern("STRING",true),    // the target type we want
 305                             time            // time stamp
 306                     );
 307                     return true;
 308               }
 309
 310
 311               print("action: %d\n", ctx.get_actions());
 312              //print("GETTING POS");
 313                 var  targetData = "";
 314
 315                 Gtk.TreePath path;
 316                 Gtk.TreeViewDropPosition pos;
 317                 var isOver = _this.view.el.get_dest_row_at_pos(this.drag_x,this.drag_y, out path, out pos);
 318
 319                 // if there are not items in the tree.. the we have to set isOver to true for anything..
 320                 var isEmpty = false;
 321                 if (_this.model.el.iter_n_children(null) < 1) {
 322                     print("got NO children?\n");
 323                     isOver = true; //???
 324                     isEmpty = true;
 325                     pos = Gtk.TreeViewDropPosition.INTO_OR_AFTER;
 326                 }
 327
 328
 329                 // ------------- a drag from self..
 330
 331
 332                 //var action = Gdk.DragAction.COPY;
 333                     // unless we are copying!!! ctl button..
 334
 335                 var action = (ctx.get_actions() & Gdk.DragAction.MOVE) > 0 ?
 336                              Gdk.DragAction.COPY  : Gdk.DragAction.MOVE ;
 337                             // Gdk.DragAction.MOVE : Gdk.DragAction.COPY ;
 338
 339
 340                 if (_this.model.el.iter_n_children(null) < 1) {
 341                     // no children.. -- asume it's ok..
 342
 343                     targetData = "|%d|".printf((int)Gtk.TreeViewDropPosition.INTO_OR_AFTER);
 344
 345                     this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 346                     Gdk.drag_status(ctx, action ,time);
 347                     return true;
 348
 349                     // continue through to allow drop...
 350
 351                 }
 352
 353
 354
 355
 356
 357                 //print("ISOVER? " + isOver);
 358                 if (!isOver) {
 359
 360                     Gdk.drag_status(ctx, 0 ,time);
 361                      this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 362                      return false;
 363
 364                 }
 365
 366                 // drag node is parent of child..
 367                 //console.log("SRC TREEPATH: " + src.treepath);
 368                 //console.log("TARGET TREEPATH: " + data.path.to_string());
 369
 370                 // nned to check a  few here..
 371                 //Gtk.TreeViewDropPosition.INTO_OR_AFTER
 372                 //Gtk.TreeViewDropPosition.INTO_OR_BEFORE
 373                 //Gtk.TreeViewDropPosition.AFTER
 374                 //Gtk.TreeViewDropPosition.BEFORE
 375
 376                 // locally dragged items to not really use the
 377                 var selection_text = this.dragData;
 378
 379
 380
 381                 if (selection_text == null || selection_text.length < 1) {
 382                             //print("Error  - drag selection text returned NULL");
 383                          Gdk.drag_status(ctx, 0 ,time);
 384                         this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 385                          return false;
 386                  }
 387
 388
 389                         // see if we are dragging into ourself?
 390                 var target_path = path.to_string();
 391                 print ("Drag  %s onto %s--%d\n ", selection_text, target_path, pos);
 392
 393                 // pos : 3 = ontop - 0 = after, 1 = before
 394                 //print("target_path="+target_path);
 395
 396                 //
 397                 if (selection_text  == target_path) {
 398                     print("self drag ?? == we should perhaps allow copy onto self..\n");
 399
 400                      Gdk.drag_status(ctx, 0 ,time);
 401                       this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 402                       return false;
 403             //                 -- fixme -- this is not really correct..
 404
 405                 }
 406
 407                 // check that
 408                 //print("DUMPING DATA");
 409                 //console.dump(data);
 410                 // path, pos
 411
 412                 //print(data.path.to_string() +' => '+  data.pos);
 413
 414                 // dropList is a list of xtypes that this node could be dropped on.
 415                 // it is set up when we start to drag..
 416
 417
 418                 targetData = _this.model.findDropNodeByPath( path.to_string(), this.dropList, pos);
 419
 420                 print("targetDAta: " + targetData +"\n");
 421
 422                 if (targetData.length < 1) {
 423                     //print("Can not find drop node path");
 424
 425                     Gdk.drag_status(ctx, 0, time);
 426                     this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 427                     return false;
 428                 }
 429
 430                 var td_ar = targetData.split("|");
 431
 432
 433
 434                 Gdk.drag_status(ctx, action ,time);
 435                 this.highlightDropPath(td_ar[0], (Gtk.TreeViewDropPosition)int.parse(td_ar[1]));
 436                 return true;
 437
 438
 439             });
 440             this.el.drag_data_get.connect( ( drag_context, data, info, time) => {
 441
 442
 443                              //print("drag-data-get");
 444                              var s = this.el.get_selection();
 445                              if (s.count_selected_rows() < 1) {
 446                                     data.set_text("",0);
 447                                      print("return empty string - no selection..");
 448                                     return;
 449                                 }
 450
 451                              Gtk.TreeIter iter;
 452                              Gtk.TreeModel mod;
 453
 454                              s.get_selected(out mod, out iter);
 455
 456
 457
 458                              GLib.Value value;
 459                              _this.model.el.get_value(iter, 2, out value);
 460                              var ndata = (JsRender.Node)(value.dup_object());
 461                              var xname = ndata.fqn();
 462
 463
 464                             var tp = mod.get_path(iter).to_string();
 465                             // by default returns the path..
 466
 467                            if ( info != Gdk.Atom.intern("STRING",true) ) {
 468                                 tp = ndata.toJsonString();
 469                            }
 470
 471                            //data.set_text(tp,tp.length);
 472
 473                             data.set (data.get_target (), 8, (uchar[]) tp.to_utf8 ());
 474
 475
 476                            //  print("return " + tp);
 477                         });
 478             this.el.drag_data_received.connect( (ctx, x, y, sel, info, time)  => {
 479
 480                     // THIS CODE ONLY RELATES TO drag  or drop of "NEW" elements or "FROM another tree.."
 481
 482
 483                     //  print("Tree: drag-data-received\n");
 484                     var selection_text = (string)sel.get_data();
 485                     //print("selection_text= %s\n",selection_text);
 486
 487                     var is_drag = this.drag_in_motion;
 488
 489
 490
 491                     print("Is Drag %s\n", is_drag ? "Y": "N");
 492                     var  targetData = "";
 493
 494                     Gtk.TreePath path;
 495                     Gtk.TreeViewDropPosition pos;
 496                     var isOver = _this.view.el.get_dest_row_at_pos(this.drag_x,this.drag_y, out path, out pos);
 497
 498                     // if there are not items in the tree.. the we have to set isOver to true for anything..
 499                     var isEmpty = false;
 500                     if (_this.model.el.iter_n_children(null) < 1) {
 501                         print("got NO children?\n");
 502                         isOver = true; //???
 503                         isEmpty = true;
 504                         pos = Gtk.TreeViewDropPosition.INTO_OR_AFTER;
 505                     }
 506
 507
 508                     //console.log("LEFT-TREE: drag-motion");
 509                     var src = Gtk.drag_get_source_widget(ctx);
 510
 511                     // a drag from self - this should be handled by drop and motion.
 512                     if (src == this.el) {
 513                         print("Source == this element should not happen.. ? \n");
 514                         return;
 515                     }
 516                     //print("drag_data_recieved from another element");
 517
 518
 519
 520
 521                     if (selection_text == null || selection_text.length < 1 || !isOver) {
 522                         // nothing valid foudn to drop...
 523                            print("empty sel text or not over");
 524                         if (is_drag) {
 525                             Gdk.drag_status(ctx, 0, time);
 526                             this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 527                             return;
 528                         }
 529                         Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 530                         // no drop action...
 531                         return;
 532
 533                     }
 534                     var dropNode = new JsRender.Node();
 535
 536                     var dropNodeType  = selection_text;
 537                     var show_templates = true;
 538                     // for drop
 539                     if (dropNodeType[0] == '{') {
 540                         var pa = new Json.Parser();
 541                         pa.load_from_data(dropNodeType);
 542
 543                         dropNode.loadFromJson( pa.get_root().get_object(), 2);
 544                         dropNodeType = dropNode.fqn();
 545                         show_templates = false;
 546
 547
 548                     } else {
 549
 550                         dropNode.setFqn(selection_text);
 551                     }
 552
 553
 554                     // dropList --- need to gather this ...
 555                     print("get dropList for : %s\n",dropNodeType);
 556                     var dropList = _this.model.file.palete().getDropList(dropNodeType);
 557
 558                     print("dropList: %s\n", string.joinv(" , ", dropList));
 559
 560                     // if drag action is link ... then we can drop it anywahere...
 561                      if ((ctx.get_actions() & Gdk.DragAction.LINK) > 0) {
 562                          // if path is null?? dragging into an empty tree?
 563                          targetData = (path == null ? "" :  path.to_string()) + "|%d".printf((int)pos);
 564                      } else {
 565
 566
 567                         targetData = _this.model.findDropNodeByPath( isEmpty ? "" : path.to_string(), dropList, pos);
 568                      }
 569
 570
 571
 572                     print("targetDAta: " + targetData +"\n");
 573
 574                     if (targetData.length < 1) {
 575
 576                         // invalid drop path..
 577                         if (this.drag_in_motion) {
 578                             Gdk.drag_status(ctx, 0, time);
 579                             this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 580                             return;
 581                         }
 582                         Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 583                         // no drop action...
 584                         return;
 585                     }
 586                     // valid drop path..
 587
 588                       var td_ar = targetData.split("|");
 589
 590
 591                     if (this.drag_in_motion) {
 592                         Gdk.drag_status(ctx, Gdk.DragAction.COPY ,time);
 593
 594                         this.highlightDropPath(  td_ar[0]  , (Gtk.TreeViewDropPosition)int.parse(td_ar[1]));
 595                         return;
 596                     }
 597                     // continue on to allow drop..
 598
 599
 600                     // at this point, drag is not in motion... -- as checked above... - so it's a real drop event..
 601
 602
 603                     _this.model.dropNode(targetData, dropNode, show_templates);
 604                     print("ADD new node!!!\n");
 605
 606                     ///Xcls_DialogTemplateSelect.singleton().show( _this.model.file.palete(), node);
 607
 608                     Gtk.drag_finish (ctx, false, false,time);
 609
 610
 611
 612
 613
 614             });
 615             this.el.drag_drop.connect( (  ctx, x, y, time)  => {
 616                   //Seed.print("TARGET: drag-drop");
 617
 618
 619                 var src = Gtk.drag_get_source_widget(ctx);
 620
 621                if (src != this.el) {
 622
 623
 624
 625                    this.drag_in_motion = false;
 626                         // request data that will be recieved by the recieve...
 627                     Gtk.drag_get_data
 628                     (
 629                             this.el,         // will receive 'drag-data-received' signal
 630                             ctx,        // represents the current state of the DnD
 631                             Gdk.Atom.intern("application/json",true),    // the target type we want
 632                             time            // time stamp
 633                     );
 634
 635
 636                     // No target offered by source => error
 637
 638
 639                      return  false;
 640                  }
 641
 642                  // handle drop around self..
 643
 644
 645
 646                 //print("GETTING POS");
 647                 var  targetData = "";
 648
 649                 Gtk.TreePath path;
 650                 Gtk.TreeViewDropPosition pos;
 651                 var isOver = _this.view.el.get_dest_row_at_pos(this.drag_x,this.drag_y, out path, out pos);
 652
 653                 // if there are not items in the tree.. the we have to set isOver to true for anything..
 654                 var isEmpty = false;
 655                 if (_this.model.el.iter_n_children(null) < 1) {
 656                     print("got NO children?\n");
 657                     isOver = true; //???
 658                     isEmpty = true;
 659                     pos = Gtk.TreeViewDropPosition.INTO_OR_AFTER;
 660                 }
 661
 662
 663
 664                 //var action = Gdk.DragAction.COPY;
 665                     // unless we are copying!!! ctl button..
 666
 667                 var action = (ctx.get_actions() & Gdk.DragAction.MOVE) > 0 ?
 668                              Gdk.DragAction.COPY  : Gdk.DragAction.MOVE ;
 669                             // Gdk.DragAction.MOVE : Gdk.DragAction.COPY ;
 670
 671
 672                 if (_this.model.el.iter_n_children(null) < 1) {
 673                     // no children.. -- asume it's ok..
 674
 675                     targetData = "|%d|".printf((int)Gtk.TreeViewDropPosition.INTO_OR_AFTER);
 676
 677                     // continue through to allow drop...
 678
 679                 } else {
 680
 681
 682
 683
 684
 685                             //print("ISOVER? " + isOver);
 686                     if (!isOver) {
 687
 688                         Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 689                         return true; // not over apoint!?! - no action on drop or motion..
 690                     }
 691
 692                     // drag node is parent of child..
 693                     //console.log("SRC TREEPATH: " + src.treepath);
 694                     //console.log("TARGET TREEPATH: " + data.path.to_string());
 695
 696                     // nned to check a  few here..
 697                     //Gtk.TreeViewDropPosition.INTO_OR_AFTER
 698                     //Gtk.TreeViewDropPosition.INTO_OR_BEFORE
 699                     //Gtk.TreeViewDropPosition.AFTER
 700                     //Gtk.TreeViewDropPosition.BEFORE
 701
 702                     // locally dragged items to not really use the
 703                     var selection_text = this.dragData;
 704
 705
 706
 707                     if (selection_text == null || selection_text.length < 1) {
 708                         //print("Error  - drag selection text returned NULL");
 709
 710                          Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 711                          return true; /// -- fixme -- this is not really correct..
 712                     }
 713
 714                             // see if we are dragging into ourself?
 715                             print ("got selection text of  " + selection_text);
 716
 717                     var target_path = path.to_string();
 718                     //print("target_path="+target_path);
 719
 720                     //
 721                     if (selection_text  == target_path) {
 722                         print("self drag ?? == we should perhaps allow copy onto self..\n");
 723
 724                          Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 725
 726                          return true; /// -- fixme -- this is not really correct..
 727
 728                     }
 729
 730                     // check that
 731                     //print("DUMPING DATA");
 732                     //console.dump(data);
 733                     // path, pos
 734
 735                     //print(data.path.to_string() +' => '+  data.pos);
 736
 737                     // dropList is a list of xtypes that this node could be dropped on.
 738                     // it is set up when we start to drag..
 739
 740
 741                     targetData = _this.model.findDropNodeByPath( path.to_string(), this.dropList, pos);
 742
 743                     print("targetDAta: " + targetData +"\n");
 744
 745                     if (targetData.length < 1) {
 746                         //print("Can not find drop node path");
 747
 748                         Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 749                         return true;
 750                     }
 751
 752                     var td_ar = targetData.split("|");
 753
 754
 755
 756                             // continue on to allow drop..
 757               }
 758                     // at this point, drag is not in motion... -- as checked above... - so it's a real drop event..
 759
 760
 761                  var delete_selection_data = false;
 762
 763                 if (action == Gdk.DragAction.ASK)  {
 764                     /* Ask the user to move or copy, then set the ctx action. */
 765                 }
 766
 767                 if (action == Gdk.DragAction.MOVE) {
 768                     delete_selection_data = true;
 769                 }
 770
 771                             // drag around.. - reorder..
 772                 _this.model.moveNode(targetData, action);
 773
 774
 775
 776
 777
 778                     // we can send stuff to souce here...
 779
 780
 781             // do we always say failure, so we handle the reall drop?
 782                 Gtk.drag_finish (ctx, false, false,time); //delete_selection_data, time);
 783
 784                 return true;
 785
 786
 787
 788
 789
 790
 791             });
 792         }
 793
 794         // user defined functions
 795         public           void highlightDropPath ( string treepath, Gtk.TreeViewDropPosition pos) {
 796
 797                 // highlighting for drag/drop
 798                 if (treepath.length > 0) {
 799                     this.el.set_drag_dest_row(  new  Gtk.TreePath.from_string( treepath ), pos);
 800                   } else {
 801                     this.el.set_drag_dest_row(null, Gtk.TreeViewDropPosition.INTO_OR_AFTER);
 802                  }
 803
 804         }
 805         public           void selectNode (string treepath_str) {
 806             //this.selection.select_path(new  Gtk.TreePath.from_string( treepath_str));
 807              var tp = new Gtk.TreePath.from_string(treepath_str);
 808
 809              this.el.set_cursor(tp, null, false);
 810              this.el.scroll_to_cell(tp, null, false, 0,0);
 811         }
 812     }
 813     public class Xcls_model : Object
 814     {
 815         public Gtk.TreeStore el;
 816         private Xcls_WindowLeftTree  _this;
 817
 818
 819             // my vars (def)
 820         public DialogTemplateSelect template_select;
 821         public JsRender.JsRender? file;
 822         public string activePath;
 823         public Project.Project? project;
 824
 825         // ctor
 826         public Xcls_model(Xcls_WindowLeftTree _owner )
 827         {
 828             _this = _owner;
 829             _this.model = this;
 830             this.el = new Gtk.TreeStore( 3, typeof(string),typeof(string),typeof(Object) );
 831
 832             // my vars (dec)
 833             this.template_select = null;
 834             this.file = null;
 835             this.activePath = "";
 836             this.project = null;
 837
 838             // set gobject values
 839
 840             // init method
 841
 842             print("model initialized");        }
 843
 844         // user defined functions
 845         public           string findDropNode (string treepath_str, string[] targets) {
 846
 847             // this is used by the dragdrop code in the roo version AFAIR..
 848
 849             //var path = treepath_str.replace(/^builder-/, '');
 850             // treemap is depreciated... - should really check if model has any entries..
 851
 852             if (this.el.iter_n_children(null) < 1) {
 853                 //print("NO KEYS");
 854                 return "|%d".printf((int)Gtk.TreeViewDropPosition.INTO_OR_AFTER);
 855             }
 856             //print("FIND treepath: " + path);
 857             //console.dump(this.treemap);
 858
 859             //if (!treepath_str.match(/^builder-/)) {
 860             //    return []; // nothing!
 861             //}
 862             if (targets.length > 0 && targets[0] == "*") {
 863                 return  treepath_str;
 864             }
 865             return this.findDropNodeByPath(treepath_str,targets, -1);
 866         }
 867         public           void loadFile (JsRender.JsRender f) {
 868             //console.dump(f);
 869             this.el.clear();
 870             this.file = f;
 871
 872
 873         //    if (!f) {
 874         //        console.log('missing file');
 875         //        return;
 876         //    }
 877
 878             // load the file if not loaded..
 879             if (f.tree == null) {
 880                 f.loadItems( );
 881             }
 882             // if it's still null?
 883             if (f.tree == null) {
 884                 return;
 885             }
 886
 887             /// this.get('/Window').setTitle(f.project.getName() + ' - ' + f.name);
 888
 889             //if (f.items.length && typeof(f.items[0]) == 'string') {
 890
 891                 //this.get('/RightEditor').el.show();
 892                 //this.get('/RightEditor.view').load( f.items[0]);
 893             //    return;
 894             //}
 895             //print("LOAD");
 896             //print(JSON.stringify(f.items, null,4));
 897             //console.dump(f.items);
 898             var o = new Gee.ArrayList<JsRender.Node>();
 899             o.add(f.tree);
 900             this.load(o,null);
 901
 902             _this.view.el.expand_all();
 903
 904             if (f.tree.items.size < 1) {
 905                 // single item..
 906
 907                 //this.get('/Window.leftvpaned').el.set_position(80);
 908                 // select first...
 909                 _this.view.el.set_cursor(
 910                     new  Gtk.TreePath.from_string("0"), null, false);
 911
 912
 913             } else {
 914                   //this.get('/Window.leftvpaned').el.set_position(200);
 915             }
 916
 917             return;
 918             /*
 919
 920             //print("hide right editior");
 921             //this.get('/RightEditor').el.hide();
 922             //this.get('/Editor').el.hide();
 923             //print("set current tree");
 924             //this.currentTree = this.toJS(false, false)[0];
 925             //console.dump(this.currentTree);
 926             //this.currentTree = this.currentTree || { items: [] };
 927             //_this.renderView();
 928             //console.dump(this.map);
 929             //var RightPalete     = imports.Builder.RightPalete.RightPalete;
 930
 931
 932             var pm = this.get('/RightPalete.model');
 933             // set up provider..
 934
 935             this.get('/RightPalete').provider = this.get('/LeftTree').getPaleteProvider();
 936
 937             if (!this.get('/RightPalete').provider) {
 938                 print ("********* PALETE PROVIDER MISSING?!!");
 939             }
 940             this.get('/LeftTree').renderView();
 941
 942             pm.load( this.get('/LeftTree').getPaleteProvider().gatherList(this.listAllTypes()));
 943
 944
 945
 946             this.get('/Window.view-notebook').el.set_current_page(
 947                 this.get('/LeftTree.model').file.getType()== 'Roo' ? 0 : -1);
 948                 */
 949
 950         }
 951         public    void updateSelected () {
 952
 953
 954             var s = _this.view.el.get_selection();
 955
 956              Gtk.TreeIter iter;
 957             Gtk.TreeModel mod;
 958
 959
 960
 961             if (!s.get_selected(out mod, out iter)) {
 962                 return; // nothing seleted..
 963             }
 964
 965           GLib.Value value;
 966             this.el.get_value(iter, 2, out value);
 967             var node = (JsRender.Node)(value.get_object());
 968
 969               this.el.set(iter, 0, node.nodeTitle(),
 970                         1, node.nodeTip(), -1
 971                 );
 972         }
 973         public           string findDropNodeByPath (string treepath_str, string[] targets, int in_pref = -1) {
 974
 975             var path = treepath_str; // dupe it..
 976
 977
 978             // pref : 3 = ontop - 0 = after, 1 = before
 979             int pref = in_pref < 0  ?  Gtk.TreeViewDropPosition.INTO_OR_AFTER : in_pref;
 980
 981             var last = "";
 982
 983             //console.dump(this.treemap);
 984
 985             print("findDropNodeByPath : got path length %d / %s\n", path.length, path);
 986
 987             if (path.length == 0) {
 988                 // top drop. // just return empty..
 989                 return "|%d".printf((int)pref) ;
 990
 991             }
 992
 993
 994             while (path.length > 0) {
 995
 996                 if (path.length == treepath_str.length && pref != Gtk.TreeViewDropPosition.INTO_OR_AFTER) {
 997                     if (path.last_index_of(":") < 0 ) {
 998                         return "";
 999                     }
1000                     path = path.substring(0, path.last_index_of(":"));
1001                     last = treepath_str;
1002                     print("DROP  before or after : using %s\n",path);
1003                     continue;
1004                 }
1005
1006                 //print("LOOKING FOR PATH: " + path);
1007                 var node_data = this.pathToNode(path);
1008
1009                 if (node_data == null) {
1010                     print("node not found");
1011                     return "";
1012                 }
1013
1014                 var xname = node_data.fqn();
1015                 var match = "";
1016                 var prop = "";
1017
1018                 for (var i =0; i < targets.length; i++)  {
1019                     var tg = targets[i];
1020                     if ((tg == xname)  ) {
1021                         match = tg;
1022                         break;
1023                     }
1024                     // if target is "xxxx:name"
1025                     if (tg.contains(xname +":")) {
1026                         match = tg;
1027                         var ar = tg.split(":");
1028                         prop = ar[1];
1029                         break;
1030                     }
1031                 }
1032
1033                 if (match.length > 0) {
1034                     if (last.length > 0) { // pref is after/before..
1035                         // then it's after last
1036                         //if (pref > 1) {
1037                         //    return "";
1038                         //}
1039                         return last + "|%d".printf((int)pref) + "|" + prop;
1040
1041
1042                     }
1043                     return path + "|%d".printf( (int) Gtk.TreeViewDropPosition.INTO_OR_AFTER);// + "|" + prop;
1044                 }
1045                 /*
1046                 last = "" + path;
1047                 var par = path.split(":");
1048                 string [] ppar = {};
1049                 for (var i = 0; i < par.length-1; i++) {
1050                     ppar += par[i];
1051                 }
1052
1053                 path = string.joinv(":", ppar);
1054                 */
1055                 break;
1056
1057             }
1058
1059             return "";
1060
1061         }
1062         public           void moveNode (string target_data, Gdk.DragAction action)
1063         {
1064
1065            /// target_data = "path|pos");
1066
1067
1068             //print("MOVE NODE");
1069             // console.dump(target_data);
1070             Gtk.TreeIter old_iter;
1071             Gtk.TreeModel mod;
1072
1073             var s = _this.view.el.get_selection();
1074             s.get_selected(out mod , out old_iter);
1075             mod.get_path(old_iter);
1076
1077             var node = this.pathToNode(mod.get_path(old_iter).to_string());
1078             //console.dump(node);
1079             if (node == null) {
1080                 print("moveNode: ERROR - node is null?");
1081             }
1082
1083
1084
1085             // needs to drop first, otherwise the target_data
1086             // treepath will be invalid.
1087
1088
1089             if ((action & Gdk.DragAction.MOVE) > 0) {
1090                     print("REMOVING OLD NODE : " + target_data + "\n");
1091                     node.remove();
1092                     this.dropNode(target_data, node, false);
1093                     this.el.remove(ref old_iter);
1094
1095
1096
1097             } else {
1098                 print("DROPPING NODE // copy: " + target_data + "\n");
1099                 node = node.deepClone();
1100                 this.dropNode(target_data, node, false);
1101             }
1102             _this.changed();
1103             this.activePath= "";
1104             //this.updateNode(false,true);
1105         }
1106         public           void load (Gee.ArrayList<JsRender.Node> tr, Gtk.TreeIter? iter)
1107         {
1108             Gtk.TreeIter citer;
1109             //this.insert(citer,iter,0);
1110             for(var i =0 ; i < tr.size; i++) {
1111                 if (iter != null) {
1112                     this.el.insert(out citer,iter,-1); // why not append?
1113                 } else {
1114                     this.el.append(out citer,null);
1115                 }
1116
1117                 this.el.set(citer, 0, tr.get(i).nodeTitle(),
1118                         1, tr.get(i).nodeTip(), -1
1119                 );
1120                 var o = new GLib.Value(typeof(Object));
1121                 o.set_object((Object)tr.get(i));
1122
1123                 this.el.set_value(citer, 2, o);
1124
1125                 if (tr.get(i).items.size > 0) {
1126                     this.load(tr.get(i).items, citer);
1127                 }
1128
1129             }
1130
1131
1132         }
1133         public           void deleteSelected () {
1134
1135             print("DELETE SELECTED?");
1136             //_this.view.blockChanges = true;
1137             print("GET SELECTION?");
1138
1139             var s = _this.view.el.get_selection();
1140
1141             print("GET  SELECTED?");
1142            Gtk.TreeIter iter;
1143             Gtk.TreeModel mod;
1144
1145
1146             if (!s.get_selected(out mod, out iter)) {
1147                 return; // nothing seleted..
1148             }
1149
1150
1151
1152             this.activePath= "";
1153             print("GET  vnode value?");
1154
1155             GLib.Value value;
1156             this.el.get_value(iter, 2, out value);
1157             var data = (JsRender.Node)(value.get_object());
1158             print("removing node from Render\n");
1159             if (data.parent == null) {
1160                 this.file.tree = null;
1161             } else {
1162                 data.remove();
1163             }
1164             print("removing node from Tree\n");
1165             s.unselect_all();
1166             this.el.remove(ref iter);
1167
1168
1169
1170
1171             //
1172
1173
1174
1175
1176             this.activePath= ""; // again!?!?
1177             //this.changed(null,true);
1178
1179             _this.changed();
1180
1181             _this.view.blockChanges = false;
1182         }
1183         public           JsRender.Node pathToNode (string path) {
1184
1185
1186              Gtk.TreeIter   iter;
1187              _this.model.el.get_iter_from_string(out iter, path);
1188
1189              GLib.Value value;
1190              _this.model.el.get_value(iter, 2, out value);
1191
1192              return (JsRender.Node)value.dup_object();
1193
1194         }
1195         public           void dropNode (string target_data_str, JsRender.Node node, bool show_templates) {
1196         //         print("drop Node");
1197              // console.dump(node);
1198           //    console.dump(target_data);
1199
1200
1201                 // 0 = before , 1=after 2/3 onto
1202
1203
1204                 var target_data= target_data_str.split("|");
1205
1206                 var parent_str = target_data[0].length > 0 ? target_data[0] : "";
1207                 var pos = target_data.length > 1 ? int.parse(target_data[1]) : 2; // ontop..
1208
1209
1210                 Gtk.TreePath tree_path  =   parent_str.length > 0 ? new  Gtk.TreePath.from_string( parent_str ) : null;
1211
1212
1213
1214                 //print("add " + tp + "@" + target_data[1]  );
1215
1216                 JsRender.Node parentNode = null;
1217
1218                 Gtk.TreeIter iter_after;
1219                 Gtk.TreeIter iter_par ;
1220
1221
1222                  if (target_data.length == 3 && target_data[2].length > 0) {
1223                     node.props.set("* prop", target_data[2]);
1224                 }
1225
1226                 Gtk.TreePath expand_parent = null;
1227
1228                 // we only need to show the template if it's come from else where?
1229                  if (show_templates) {
1230
1231                     if (this.template_select == null) {
1232                         this.template_select = new DialogTemplateSelect();
1233                      }
1234
1235                      var new_node = this.template_select.show(
1236                           (Gtk.Window) _this.el.get_toplevel (),
1237                               this.file.palete(),
1238                            node);
1239
1240                      if (new_node != null) {
1241                          node = new_node;
1242                      }
1243                 }
1244
1245                  //print("pos is %d  \n".printf(pos));
1246
1247                  Gtk.TreeIter n_iter;
1248
1249                  if ( parent_str.length < 1) {
1250                       this.el.append(out n_iter, null); // drop at top level..
1251                       node.parent = null;
1252                       this.file.tree = node;
1253
1254
1255                 } else   if (pos  < 2) {
1256                     //print(target_data[1]  > 0 ? 'insert_after' : 'insert_before');
1257
1258                     this.el.get_iter(out iter_after, tree_path );
1259                     this.el.iter_parent(out iter_par, iter_after);
1260                     expand_parent = this.el.get_path(iter_par);
1261
1262                     GLib.Value value;
1263                     this.el.get_value( iter_par, 2, out value);
1264                     parentNode =  (JsRender.Node)value.dup_object();
1265
1266
1267                     this.el.get_value( iter_after, 2, out value);
1268                     var relNode =  (JsRender.Node)value.dup_object();
1269
1270                     if ( pos  > 0 ) {
1271
1272                         this.el.insert_after(out n_iter,    iter_par  , iter_after);
1273                         var ix = parentNode.items.index_of(relNode);
1274                         parentNode.items.insert(ix+1, node);
1275
1276                     } else {
1277                         this.el.insert_before(out n_iter,  iter_par  , iter_after);
1278                         var ix = parentNode.items.index_of(relNode);
1279                         parentNode.items.insert(ix, node);
1280
1281                     }
1282                     node.parent = parentNode;
1283
1284
1285
1286                 } else {
1287                    //  print("appending to  " + parent_str);
1288                     this.el.get_iter(out iter_par, tree_path);
1289                     this.el.append(out n_iter,   iter_par );
1290                     expand_parent = this.el.get_path(iter_par);
1291
1292                     GLib.Value value;
1293                     this.el.get_value( iter_par, 2, out value);
1294                     parentNode =  (JsRender.Node)value.dup_object();
1295                     node.parent = parentNode;
1296                     parentNode.items.add(node);
1297                 }
1298
1299                 // reparent node in tree...
1300
1301
1302                 // why only on no parent???
1303
1304                 //if (node.parent = null) {
1305
1306
1307
1308                 //}
1309
1310
1311                 // work out what kind of packing to use.. -- should be in
1312                 if (!node.has("pack")   && parent_str.length > 1) {
1313
1314                     this.file.palete().fillPack(node,parentNode);
1315
1316
1317                 }
1318
1319                 // add the node...
1320
1321                 this.el.set(n_iter, 0, node.nodeTitle(), 1, node.nodeTip(), -1  );
1322                 var o = new GLib.Value(typeof(Object));
1323                 o.set_object((Object)node);
1324
1325                 this.el.set_value(n_iter, 2, o);
1326
1327
1328
1329
1330         // load children - if it has any..
1331
1332                 if (node.items.size > 0) {
1333                     this.load(node.items, n_iter);
1334                     _this.view.el.expand_row(this.el.get_path(n_iter), true);
1335                 } else if (expand_parent != null && !_this.view.el.is_row_expanded(expand_parent)) {
1336                    _this.view.el.expand_row(expand_parent,true);
1337                 }
1338
1339                 //if (tp != null && (node.items.length() > 0 || pos > 1)) {
1340                 //    _this.view.el.expand_row(this.el.get_path(iter_par), true);
1341                // }
1342                 // wee need to get the empty proptypes from somewhere..
1343
1344                 //var olditer = this.activeIter;
1345                 this.activePath = this.el.get_path(n_iter).to_string();
1346
1347
1348
1349
1350                 _this.view.el.set_cursor(this.el.get_path(n_iter), null, false);
1351                 _this.changed();
1352
1353
1354
1355         }
1356     }
1357     public class Xcls_TreeViewColumn4 : Object
1358     {
1359         public Gtk.TreeViewColumn el;
1360         private Xcls_WindowLeftTree  _this;
1361
1362
1363             // my vars (def)
1364
1365         // ctor
1366         public Xcls_TreeViewColumn4(Xcls_WindowLeftTree _owner )
1367         {
1368             _this = _owner;
1369             this.el = new Gtk.TreeViewColumn();
1370
1371             // my vars (dec)
1372
1373             // set gobject values
1374             this.el.title = "test";
1375             var child_0 = new Xcls_renderer( _this );
1376             child_0.ref();
1377             this.el.pack_start (  child_0.el , true );
1378
1379             // init method
1380
1381             this.el.add_attribute(_this.renderer.el , "markup", 0 );        }
1382
1383         // user defined functions
1384     }
1385     public class Xcls_renderer : Object
1386     {
1387         public Gtk.CellRendererText el;
1388         private Xcls_WindowLeftTree  _this;
1389
1390
1391             // my vars (def)
1392
1393         // ctor
1394         public Xcls_renderer(Xcls_WindowLeftTree _owner )
1395         {
1396             _this = _owner;
1397             _this.renderer = this;
1398             this.el = new Gtk.CellRendererText();
1399
1400             // my vars (dec)
1401
1402             // set gobject values
1403         }
1404
1405         // user defined functions
1406     }
1407     public class Xcls_LeftTreeMenu : Object
1408     {
1409         public Gtk.Menu el;
1410         private Xcls_WindowLeftTree  _this;
1411
1412
1413             // my vars (def)
1414
1415         // ctor
1416         public Xcls_LeftTreeMenu(Xcls_WindowLeftTree _owner )
1417         {
1418             _this = _owner;
1419             _this.LeftTreeMenu = this;
1420             this.el = new Gtk.Menu();
1421
1422             // my vars (dec)
1423
1424             // set gobject values
1425             var child_0 = new Xcls_MenuItem7( _this );
1426             child_0.ref();
1427             this.el.add (  child_0.el  );
1428             var child_1 = new Xcls_MenuItem8( _this );
1429             child_1.ref();
1430             this.el.add (  child_1.el  );
1431             var child_2 = new Xcls_MenuItem9( _this );
1432             child_2.ref();
1433             this.el.add (  child_2.el  );
1434         }
1435
1436         // user defined functions
1437     }
1438     public class Xcls_MenuItem7 : Object
1439     {
1440         public Gtk.MenuItem el;
1441         private Xcls_WindowLeftTree  _this;
1442
1443
1444             // my vars (def)
1445
1446         // ctor
1447         public Xcls_MenuItem7(Xcls_WindowLeftTree _owner )
1448         {
1449             _this = _owner;
1450             this.el = new Gtk.MenuItem();
1451
1452             // my vars (dec)
1453
1454             // set gobject values
1455             this.el.label = "Delete Element";
1456
1457             // listeners
1458             this.el.activate.connect( ( ) => {
1459
1460                 print("ACTIVATE?");
1461
1462
1463                  _this.model.deleteSelected();
1464             });
1465         }
1466
1467         // user defined functions
1468     }
1469     public class Xcls_MenuItem8 : Object
1470     {
1471         public Gtk.MenuItem el;
1472         private Xcls_WindowLeftTree  _this;
1473
1474
1475             // my vars (def)
1476
1477         // ctor
1478         public Xcls_MenuItem8(Xcls_WindowLeftTree _owner )
1479         {
1480             _this = _owner;
1481             this.el = new Gtk.MenuItem();
1482
1483             // my vars (dec)
1484
1485             // set gobject values
1486             this.el.label = "Save as Template";
1487
1488             // listeners
1489             this.el.activate.connect( () => {
1490
1491                  DialogSaveTemplate.singleton().show(
1492                         (Gtk.Window) _this.el.get_toplevel (),
1493                         _this.model.file.palete(),
1494                         _this.getActiveElement()
1495                 );
1496
1497
1498             });
1499         }
1500
1501         // user defined functions
1502     }
1503     public class Xcls_MenuItem9 : Object
1504     {
1505         public Gtk.MenuItem el;
1506         private Xcls_WindowLeftTree  _this;
1507
1508
1509             // my vars (def)
1510
1511         // ctor
1512         public Xcls_MenuItem9(Xcls_WindowLeftTree _owner )
1513         {
1514             _this = _owner;
1515             this.el = new Gtk.MenuItem();
1516
1517             // my vars (dec)
1518
1519             // set gobject values
1520             this.el.label = "Save as Module";
1521
1522             // listeners
1523             this.el.activate.connect( () => {
1524                 var node = _this.getActiveElement();
1525                  var name = DialogSaveModule.singleton().show(
1526                         (Gtk.Window) _this.el.get_toplevel (),
1527                         _this.model.file.project,
1528                         node
1529                  );
1530                  if (name.length < 1) {
1531                         return;
1532
1533                  }
1534                  node.props.set("* xinclude", name);
1535                  node.items.clear();
1536
1537
1538                 var s = _this.view.el.get_selection();
1539
1540                 print("GET  SELECTED?");
1541                 Gtk.TreeIter iter;
1542                 Gtk.TreeModel mod;
1543
1544
1545                 if (!s.get_selected(out mod, out iter)) {
1546                     return; // nothing seleted..
1547                 }
1548                 Gtk.TreeIter citer;
1549                 var n_cn = mod.iter_n_children(iter) -1;
1550                 for (var i = n_cn; i > -1; i--) {
1551                     mod.iter_nth_child(out citer, iter, i);
1552
1553
1554                     print("removing node from Tree\n");
1555
1556                     _this.model.el.remove(ref citer);
1557                 }
1558                 _this.changed();
1559                 _this.node_selected(node);
1560
1561
1562             });
1563         }
1564
1565         // user defined functions
1566     }
1567 }