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, string source);
  24     public Xcls_MainWindow main_window;
  25
  26     // ctor
  27     public Xcls_WindowLeftTree()
  28     {
  29         _this = this;
  30         this.el = new Gtk.ScrolledWindow( null, null );
  31
  32         // my vars (dec)
  33         this.main_window = null;
  34
  35         // set gobject values
  36         this.el.shadow_type = Gtk.ShadowType.IN;
  37         var child_0 = new Xcls_view( _this );
  38         child_0.ref();
  39         this.el.add (  child_0.el  );
  40         var child_1 = new Xcls_LeftTreeMenu( _this );
  41         child_1.ref();
  42
  43         // init method
  44
  45         this.el.set_policy (Gtk.PolicyType.AUTOMATIC, Gtk.PolicyType.AUTOMATIC);
  46     }
  47
  48     // user defined functions
  49     public           JsRender.Node? getActiveElement () { // return path to actie node.
  50
  51          var path = this.getActivePath();
  52          if (path.length < 1) {
  53             return null;
  54          }
  55          return _this.model.pathToNode(path);
  56
  57     }
  58     public           JsRender.JsRender getActiveFile () {
  59         return this.main_window.windowstate.file;
  60     }
  61     public           string getActivePath () {
  62
  63         var view = this.view.el;
  64         if (view.get_selection().count_selected_rows() < 1) {
  65             return "";
  66         }
  67         Gtk.TreeIter iter;
  68         Gtk.TreeModel mod;
  69         view.get_selection().get_selected(out mod, out iter);
  70         return mod.get_path(iter).to_string();
  71     }
  72     public class Xcls_view : Object
  73     {
  74         public Gtk.TreeView el;
  75         private Xcls_WindowLeftTree  _this;
  76
  77
  78             // my vars (def)
  79         public string dragData;
  80         public string[] dropList;
  81         public int drag_x;
  82         public int drag_y;
  83         public bool drag_in_motion;
  84         public bool blockChanges;
  85         public string XXXX;
  86
  87         // ctor
  88         public Xcls_view(Xcls_WindowLeftTree _owner )
  89         {
  90             _this = _owner;
  91             _this.view = this;
  92             this.el = new Gtk.TreeView();
  93
  94             // my vars (dec)
  95             this.blockChanges = false;
  96
  97             // set gobject values
  98             this.el.expand = true;
  99             this.el.tooltip_column = 1;
 100             this.el.enable_tree_lines = true;
 101             this.el.headers_visible = false;
 102             var child_0 = new Xcls_model( _this );
 103             child_0.ref();
 104             this.el.set_model (  child_0.el  );
 105             var child_1 = new Xcls_TreeViewColumn4( _this );
 106             child_1.ref();
 107             this.el.append_column (  child_1.el  );
 108
 109             // init method
 110
 111             {
 112                 var description = new Pango.FontDescription();
 113                 description.set_size(8000);
 114                 this.el.override_font(description);
 115
 116                 var selection = this.el.get_selection();
 117                 selection.set_mode( Gtk.SelectionMode.SINGLE);
 118
 119
 120                 // is this really needed??
 121                 /*
 122                 this.selection.signal['changed'].connect(function() {
 123                     _this.get('/LeftTree.view').listeners.cursor_changed.apply(
 124                         _this.get('/LeftTree.view'), [ _this.get('/LeftTree.view'), '']
 125                     );
 126                 });
 127                 */
 128                 Gtk.drag_source_set (
 129                     this.el,            /* widget will be drag-able */
 130                     Gdk.ModifierType.BUTTON1_MASK,       /* modifier that will start a drag */
 131                     BuilderApplication.targetList,            /* lists of target to support */
 132                     Gdk.DragAction.COPY   | Gdk.DragAction.MOVE    |  Gdk.DragAction.LINK           /* what to do with data after dropped */
 133                 );
 134
 135                 // ?? needed??
 136                 //Gtk.drag_source_add_text_targets(this.el);
 137
 138                 Gtk.drag_dest_set
 139                 (
 140                     this.el,              /* widget that will accept a drop */
 141                     Gtk.DestDefaults.MOTION  | Gtk.DestDefaults.HIGHLIGHT,
 142                     BuilderApplication.targetList,            /* lists of target to support */
 143                     Gdk.DragAction.COPY   | Gdk.DragAction.MOVE   | Gdk.DragAction.LINK     /* what to do with data after dropped */
 144                 );
 145
 146                 //Gtk.drag_dest_set_target_list(this.el, Builder.Application.targetList);
 147                 //Gtk.drag_dest_add_text_targets(this.el);
 148             }
 149
 150             //listeners
 151             this.el.button_press_event.connect( ( ev) => {
 152                 //console.log("button press?");
 153                 this.lastEventSource = "tree";
 154                 if (! _this.before_node_change(null) ) {
 155
 156                    return true;
 157                 }
 158
 159
 160                 if (ev.type != Gdk.EventType.BUTTON_PRESS  || ev.button != 3) {
 161                     //print("click" + ev.type);
 162                     return false;
 163                 }
 164                 Gtk.TreePath res;
 165                 if (!_this.view.el.get_path_at_pos((int)ev.x,(int)ev.y, out res, null, null, null) ) {
 166                     return true;
 167                 }
 168
 169                 this.el.get_selection().select_path(res);
 170
 171                   //if (!this.get('/LeftTreeMenu').el)  {
 172                   //      this.get('/LeftTreeMenu').init();
 173                   //  }
 174
 175                  _this.LeftTreeMenu.el.set_screen(Gdk.Screen.get_default());
 176                  _this.LeftTreeMenu.el.show_all();
 177                   _this.LeftTreeMenu.el.popup(null, null, null,  3, ev.time);
 178                  //   print("click:" + res.path.to_string());
 179                   return true;
 180             });
 181             this.el.cursor_changed.connect( ( ) => {
 182
 183
 184                  if (this.blockChanges) { // probably not needed..
 185                    return  ;
 186                  }
 187                   if (!_this.before_node_change(null) ) {
 188                      this.blockChanges = true;
 189                      this.el.get_selection().unselect_all();
 190                      this.blockChanges = false;
 191                      return;
 192                  }
 193                  if (_this.main_window.windowstate.file == null) {
 194                      return;
 195                  }
 196
 197                  //var render = this.get('/LeftTree').getRenderer();
 198                 print("LEFT TREE -> view -> selection changed called\n");
 199
 200
 201                 // -- it appears that the selection is not updated.
 202
 203                 GLib.Timeout.add_full(GLib.Priority.DEFAULT,10 , () => {
 204
 205
 206                         if (this.el.get_selection().count_selected_rows() < 1) {
 207
 208                             print("selected rows < 1\n");
 209                             //??this.model.load( false);
 210                             _this.node_selected(null, this.lastEventSource);
 211
 212                             return false ;
 213                         }
 214
 215                             //console.log('changed');
 216                         var s = this.el.get_selection();
 217                          Gtk.TreeIter iter;
 218                          Gtk.TreeModel mod;
 219                         s.get_selected(out mod, out iter);
 220
 221
 222                         // var val = "";
 223                         GLib.Value value;
 224                         _this.model.el.get_value(iter, 2, out value);
 225                         _this.model.activePath = mod.get_path(iter).to_string();
 226
 227                         var node = (JsRender.Node)value.dup_object();
 228                         _this.node_selected(node);
 229                         while (Gtk.events_pending()) {
 230                             Gtk.main_iteration();
 231                        }
 232                         var cp = mod.get_path(iter);
 233                         Gtk.TreePath sp, ep;
 234                         this.el.get_visible_range(out sp, out ep);
 235                         // if sp is before cp then retuns 1.
 236                         // if cp is before ep then retuns 1.
 237                         if (cp.compare(sp) >= 0 && ep.compare(cp) >=1) {
 238                             return false;
 239                         }
 240
 241
 242
 243                         this.el.scroll_to_cell(new Gtk.TreePath.from_string(_this.model.activePath), null, true, 0.1f,0.0f);
 244
 245                         return false;
 246                   });
 247                 //_this.after_node_change(node);
 248
 249             //        _this.model.file.changed(node, "tree");
 250
 251                 //Seed.print( value.get_string());
 252                 return  ;
 253
 254             });
 255             this.el.drag_begin.connect( ( ctx)  => {
 256                 //print('SOURCE: drag-begin');
 257
 258
 259                     //this.targetData = "";
 260
 261                     // find what is selected in our tree...
 262
 263                     var s = _this.view.el.get_selection();
 264                     if (s.count_selected_rows() < 1) {
 265                         return;
 266                     }
 267                     Gtk.TreeIter iter;
 268                     Gtk.TreeModel mod;
 269                     s.get_selected(out mod, out iter);
 270
 271
 272
 273                     // set some properties of the tree for use by the dropped element.
 274                     GLib.Value value;
 275                     _this.model.el.get_value(iter, 2, out value);
 276                     var tp = mod.get_path(iter).to_string();
 277                     var data = (JsRender.Node)(value.dup_object());
 278                     var xname = data.fqn();
 279                     print ("XNAME  IS " + xname+ "\n");
 280                     this.dragData = tp;
 281                     this.dropList = _this.main_window.windowstate.file.palete().getDropList(xname);
 282
 283                     print ("DROP LIST IS " + string.joinv(", ", this.dropList) + "\n");
 284
 285
 286                     // make the drag icon a picture of the node that was selected
 287
 288
 289                 // by default returns the path..
 290                    var path = _this.model.el.get_path(iter);
 291
 292
 293                     var pix = this.el.create_row_drag_icon ( path);
 294
 295                     Gtk.drag_set_icon_surface (ctx, pix) ;
 296
 297                     return;
 298             });
 299             this.el.drag_end.connect( (drag_context) => {
 300                 //Seed.print('LEFT-TREE: drag-end');
 301                     this.dragData = "";
 302                     this.dropList = null;
 303             //        this.targetData = "";
 304                     this.highlightDropPath("",0);
 305             //        return true;
 306             });
 307             this.el.drag_motion.connect( ( ctx, x, y, time)  => {
 308                print("got drag motion\n");
 309                 var src = Gtk.drag_get_source_widget(ctx);
 310                this.drag_x = x;
 311                this.drag_y = y;
 312
 313                if (src != this.el) {
 314
 315
 316
 317                 // the point of this is to detect where an item could be dropped..
 318                     print("requesting drag data\n");
 319                    this.drag_in_motion = true;
 320
 321                         // request data that will be recieved by the recieve...
 322                     Gtk.drag_get_data
 323                     (
 324                             this.el,         // will receive 'drag-data-received' signal
 325                             ctx,        // represents the current state of the DnD
 326                             Gdk.Atom.intern("STRING",true),    // the target type we want
 327                             time            // time stamp
 328                     );
 329                     return true;
 330               }
 331
 332
 333               print("action: %d\n", ctx.get_actions());
 334              //print("GETTING POS");
 335                 var  targetData = "";
 336
 337                 Gtk.TreePath path;
 338                 Gtk.TreeViewDropPosition pos;
 339                 var isOver = _this.view.el.get_dest_row_at_pos(this.drag_x,this.drag_y, out path, out pos);
 340
 341                 // if there are not items in the tree.. the we have to set isOver to true for anything..
 342                 var isEmpty = false;
 343                 if (_this.model.el.iter_n_children(null) < 1) {
 344                     print("got NO children?\n");
 345                     isOver = true; //???
 346                     isEmpty = true;
 347                     pos = Gtk.TreeViewDropPosition.INTO_OR_AFTER;
 348                 }
 349
 350
 351                 // ------------- a drag from self..
 352
 353
 354                 //var action = Gdk.DragAction.COPY;
 355                     // unless we are copying!!! ctl button..
 356
 357                 var action = (ctx.get_actions() & Gdk.DragAction.MOVE) > 0 ?
 358                              Gdk.DragAction.COPY  : Gdk.DragAction.MOVE ;
 359                             // Gdk.DragAction.MOVE : Gdk.DragAction.COPY ;
 360
 361
 362                 if (_this.model.el.iter_n_children(null) < 1) {
 363                     // no children.. -- asume it's ok..
 364
 365                     targetData = "|%d|".printf((int)Gtk.TreeViewDropPosition.INTO_OR_AFTER);
 366
 367                     this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 368                     Gdk.drag_status(ctx, action ,time);
 369                     return true;
 370
 371                     // continue through to allow drop...
 372
 373                 }
 374
 375
 376
 377
 378
 379                 //print("ISOVER? " + isOver);
 380                 if (!isOver) {
 381
 382                     Gdk.drag_status(ctx, 0 ,time);
 383                      this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 384                      return false;
 385
 386                 }
 387
 388                 // drag node is parent of child..
 389                 //console.log("SRC TREEPATH: " + src.treepath);
 390                 //console.log("TARGET TREEPATH: " + data.path.to_string());
 391
 392                 // nned to check a  few here..
 393                 //Gtk.TreeViewDropPosition.INTO_OR_AFTER
 394                 //Gtk.TreeViewDropPosition.INTO_OR_BEFORE
 395                 //Gtk.TreeViewDropPosition.AFTER
 396                 //Gtk.TreeViewDropPosition.BEFORE
 397
 398                 // locally dragged items to not really use the
 399                 var selection_text = this.dragData;
 400
 401
 402
 403                 if (selection_text == null || selection_text.length < 1) {
 404                             //print("Error  - drag selection text returned NULL");
 405                          Gdk.drag_status(ctx, 0 ,time);
 406                         this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 407                          return false;
 408                  }
 409
 410
 411                         // see if we are dragging into ourself?
 412                 var target_path = path.to_string();
 413                 print ("Drag  %s onto %s--%d\n ", selection_text, target_path, pos);
 414
 415                 // pos : 3 = ontop - 0 = after, 1 = before
 416                 //print("target_path="+target_path);
 417
 418                 //
 419                 if (selection_text  == target_path) {
 420                     print("self drag ?? == we should perhaps allow copy onto self..\n");
 421
 422                      Gdk.drag_status(ctx, 0 ,time);
 423                       this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 424                       return false;
 425             //                 -- fixme -- this is not really correct..
 426
 427                 }
 428
 429                 // check that
 430                 //print("DUMPING DATA");
 431                 //console.dump(data);
 432                 // path, pos
 433
 434                 //print(data.path.to_string() +' => '+  data.pos);
 435
 436                 // dropList is a list of xtypes that this node could be dropped on.
 437                 // it is set up when we start to drag..
 438
 439
 440                 targetData = _this.model.findDropNodeByPath( path.to_string(), this.dropList, pos);
 441
 442                 print("targetDAta: " + targetData +"\n");
 443
 444                 if (targetData.length < 1) {
 445                     //print("Can not find drop node path");
 446
 447                     Gdk.drag_status(ctx, 0, time);
 448                     this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 449                     return false;
 450                 }
 451
 452                 var td_ar = targetData.split("|");
 453
 454
 455
 456                 Gdk.drag_status(ctx, action ,time);
 457                 this.highlightDropPath(td_ar[0], (Gtk.TreeViewDropPosition)int.parse(td_ar[1]));
 458                 return true;
 459
 460
 461             });
 462             this.el.drag_data_get.connect( ( drag_context, data, info, time) => {
 463
 464
 465                              //print("drag-data-get");
 466                              var s = this.el.get_selection();
 467                              if (s.count_selected_rows() < 1) {
 468                                     data.set_text("",0);
 469                                      print("return empty string - no selection..");
 470                                     return;
 471                                 }
 472
 473                              Gtk.TreeIter iter;
 474                              Gtk.TreeModel mod;
 475
 476                              s.get_selected(out mod, out iter);
 477
 478
 479
 480                              GLib.Value value;
 481                              _this.model.el.get_value(iter, 2, out value);
 482                              var ndata = (JsRender.Node)(value.dup_object());
 483
 484
 485
 486                             var tp = mod.get_path(iter).to_string();
 487                             // by default returns the path..
 488
 489                            if ( info != Gdk.Atom.intern("STRING",true) ) {
 490                                 tp = ndata.toJsonString();
 491                            }
 492
 493                            //data.set_text(tp,tp.length);
 494
 495                             data.set (data.get_target (), 8, (uchar[]) tp.to_utf8 ());
 496
 497
 498                            //  print("return " + tp);
 499                         });
 500             this.el.drag_data_received.connect( (ctx, x, y, sel, info, time)  => {
 501
 502                     // THIS CODE ONLY RELATES TO drag  or drop of "NEW" elements or "FROM another tree.."
 503
 504
 505                     //  print("Tree: drag-data-received\n");
 506                     var selection_text = (string)sel.get_data();
 507                     //print("selection_text= %s\n",selection_text);
 508
 509                     var is_drag = this.drag_in_motion;
 510
 511
 512
 513                     print("Is Drag %s\n", is_drag ? "Y": "N");
 514                     var  targetData = "";
 515
 516                     Gtk.TreePath path;
 517                     Gtk.TreeViewDropPosition pos;
 518                     var isOver = _this.view.el.get_dest_row_at_pos(this.drag_x,this.drag_y, out path, out pos);
 519
 520                     // if there are not items in the tree.. the we have to set isOver to true for anything..
 521                     var isEmpty = false;
 522                     if (_this.model.el.iter_n_children(null) < 1) {
 523                         print("got NO children?\n");
 524                         isOver = true; //???
 525                         isEmpty = true;
 526                         pos = Gtk.TreeViewDropPosition.INTO_OR_AFTER;
 527                     }
 528
 529
 530                     //console.log("LEFT-TREE: drag-motion");
 531                     var src = Gtk.drag_get_source_widget(ctx);
 532
 533                     // a drag from self - this should be handled by drop and motion.
 534                     if (src == this.el) {
 535                         print("Source == this element should not happen.. ? \n");
 536                         return;
 537                     }
 538                     //print("drag_data_recieved from another element");
 539
 540
 541
 542
 543                     if (selection_text == null || selection_text.length < 1 || !isOver) {
 544                         // nothing valid foudn to drop...
 545                            print("empty sel text or not over");
 546                         if (is_drag) {
 547                             Gdk.drag_status(ctx, 0, time);
 548                             this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 549                             return;
 550                         }
 551                         Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 552                         // no drop action...
 553                         return;
 554
 555                     }
 556                     var dropNode = new JsRender.Node();
 557
 558                     var dropNodeType  = selection_text;
 559                     var show_templates = true;
 560                     // for drop
 561                     if (dropNodeType[0] == '{') {
 562                         var pa = new Json.Parser();
 563                         try {
 564                             pa.load_from_data(dropNodeType);
 565                         } catch (Error e) {
 566                             Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 567                             // no drop action...
 568                             return;
 569                         }
 570
 571                         dropNode.loadFromJson( pa.get_root().get_object(), 2);
 572                         dropNodeType = dropNode.fqn();
 573                         show_templates = false;
 574
 575
 576                     } else {
 577
 578                         dropNode.setFqn(selection_text);
 579                     }
 580
 581
 582                     // dropList --- need to gather this ...
 583                     print("get dropList for : %s\n",dropNodeType);
 584                     var dropList = _this.main_window.windowstate.file.palete().getDropList(dropNodeType);
 585
 586                     print("dropList: %s\n", string.joinv(" , ", dropList));
 587
 588                     // if drag action is link ... then we can drop it anywahere...
 589                      if ((ctx.get_actions() & Gdk.DragAction.LINK) > 0) {
 590                          // if path is null?? dragging into an empty tree?
 591                          targetData = (path == null ? "" :  path.to_string()) + "|%d".printf((int)pos);
 592                      } else {
 593
 594
 595                         targetData = _this.model.findDropNodeByPath( isEmpty ? "" : path.to_string(), dropList, pos);
 596                      }
 597
 598
 599
 600                     print("targetDAta: " + targetData +"\n");
 601
 602                     if (targetData.length < 1) {
 603
 604                         // invalid drop path..
 605                         if (this.drag_in_motion) {
 606                             Gdk.drag_status(ctx, 0, time);
 607                             this.highlightDropPath("", (Gtk.TreeViewDropPosition)0);
 608                             return;
 609                         }
 610                         Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 611                         // no drop action...
 612                         return;
 613                     }
 614                     // valid drop path..
 615
 616                       var td_ar = targetData.split("|");
 617
 618
 619                     if (this.drag_in_motion) {
 620                         Gdk.drag_status(ctx, Gdk.DragAction.COPY ,time);
 621
 622                         this.highlightDropPath(  td_ar[0]  , (Gtk.TreeViewDropPosition)int.parse(td_ar[1]));
 623                         return;
 624                     }
 625                     // continue on to allow drop..
 626
 627
 628                     // at this point, drag is not in motion... -- as checked above... - so it's a real drop event..
 629
 630
 631                     _this.model.dropNode(targetData, dropNode, show_templates);
 632                     print("ADD new node!!!\n");
 633
 634                     ///Xcls_DialogTemplateSelect.singleton().show( _this.model.file.palete(), node);
 635
 636                     Gtk.drag_finish (ctx, false, false,time);
 637
 638
 639
 640
 641
 642             });
 643             this.el.drag_drop.connect( (  ctx, x, y, time)  => {
 644                   //Seed.print("TARGET: drag-drop");
 645
 646
 647                 var src = Gtk.drag_get_source_widget(ctx);
 648
 649                if (src != this.el) {
 650
 651
 652
 653                    this.drag_in_motion = false;
 654                         // request data that will be recieved by the recieve...
 655                     Gtk.drag_get_data
 656                     (
 657                             this.el,         // will receive 'drag-data-received' signal
 658                             ctx,        // represents the current state of the DnD
 659                             Gdk.Atom.intern("application/json",true),    // the target type we want
 660                             time            // time stamp
 661                     );
 662
 663
 664                     // No target offered by source => error
 665
 666
 667                      return  false;
 668                  }
 669
 670                  // handle drop around self..
 671
 672
 673
 674                 //print("GETTING POS");
 675                 var  targetData = "";
 676
 677                 Gtk.TreePath path;
 678                 Gtk.TreeViewDropPosition pos;
 679                 var isOver = _this.view.el.get_dest_row_at_pos(this.drag_x,this.drag_y, out path, out pos);
 680
 681                 // if there are not items in the tree.. the we have to set isOver to true for anything..
 682                 var isEmpty = false;
 683                 if (_this.model.el.iter_n_children(null) < 1) {
 684                     print("got NO children?\n");
 685                     isOver = true; //???
 686                     isEmpty = true;
 687                     pos = Gtk.TreeViewDropPosition.INTO_OR_AFTER;
 688                 }
 689
 690
 691
 692                 //var action = Gdk.DragAction.COPY;
 693                     // unless we are copying!!! ctl button..
 694
 695                 var action = (ctx.get_actions() & Gdk.DragAction.MOVE) > 0 ?
 696                              Gdk.DragAction.COPY  : Gdk.DragAction.MOVE ;
 697                             // Gdk.DragAction.MOVE : Gdk.DragAction.COPY ;
 698
 699
 700                 if (_this.model.el.iter_n_children(null) < 1) {
 701                     // no children.. -- asume it's ok..
 702
 703                     targetData = "|%d|".printf((int)Gtk.TreeViewDropPosition.INTO_OR_AFTER);
 704
 705                     // continue through to allow drop...
 706
 707                 } else {
 708
 709
 710
 711
 712
 713                             //print("ISOVER? " + isOver);
 714                     if (!isOver) {
 715
 716                         Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 717                         return true; // not over apoint!?! - no action on drop or motion..
 718                     }
 719
 720                     // drag node is parent of child..
 721                     //console.log("SRC TREEPATH: " + src.treepath);
 722                     //console.log("TARGET TREEPATH: " + data.path.to_string());
 723
 724                     // nned to check a  few here..
 725                     //Gtk.TreeViewDropPosition.INTO_OR_AFTER
 726                     //Gtk.TreeViewDropPosition.INTO_OR_BEFORE
 727                     //Gtk.TreeViewDropPosition.AFTER
 728                     //Gtk.TreeViewDropPosition.BEFORE
 729
 730                     // locally dragged items to not really use the
 731                     var selection_text = this.dragData;
 732
 733
 734
 735                     if (selection_text == null || selection_text.length < 1) {
 736                         //print("Error  - drag selection text returned NULL");
 737
 738                          Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 739                          return true; /// -- fixme -- this is not really correct..
 740                     }
 741
 742                             // see if we are dragging into ourself?
 743                             print ("got selection text of  " + selection_text);
 744
 745                     var target_path = path.to_string();
 746                     //print("target_path="+target_path);
 747
 748                     //
 749                     if (selection_text  == target_path) {
 750                         print("self drag ?? == we should perhaps allow copy onto self..\n");
 751
 752                          Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 753
 754                          return true; /// -- fixme -- this is not really correct..
 755
 756                     }
 757
 758                     // check that
 759                     //print("DUMPING DATA");
 760                     //console.dump(data);
 761                     // path, pos
 762
 763                     //print(data.path.to_string() +' => '+  data.pos);
 764
 765                     // dropList is a list of xtypes that this node could be dropped on.
 766                     // it is set up when we start to drag..
 767
 768
 769                     targetData = _this.model.findDropNodeByPath( path.to_string(), this.dropList, pos);
 770
 771                     print("targetDAta: " + targetData +"\n");
 772
 773                     if (targetData.length < 1) {
 774                         //print("Can not find drop node path");
 775
 776                         Gtk.drag_finish (ctx, false, false, time);        // drop failed..
 777                         return true;
 778                     }
 779
 780
 781
 782                             // continue on to allow drop..
 783               }
 784                     // at this point, drag is not in motion... -- as checked above... - so it's a real drop event..
 785
 786
 787                  var delete_selection_data = false;
 788
 789                 if (action == Gdk.DragAction.ASK)  {
 790                     /* Ask the user to move or copy, then set the ctx action. */
 791                 }
 792
 793                 if (action == Gdk.DragAction.MOVE) {
 794                     delete_selection_data = true;
 795                 }
 796
 797                             // drag around.. - reorder..
 798                 _this.model.moveNode(targetData, action);
 799
 800
 801
 802
 803
 804                     // we can send stuff to souce here...
 805
 806
 807             // do we always say failure, so we handle the reall drop?
 808                 Gtk.drag_finish (ctx, false, false,time); //delete_selection_data, time);
 809
 810                 return true;
 811
 812
 813
 814
 815
 816
 817             });
 818         }
 819
 820         // user defined functions
 821         public           void highlightDropPath ( string treepath, Gtk.TreeViewDropPosition pos) {
 822
 823                 // highlighting for drag/drop
 824                 if (treepath.length > 0) {
 825                     this.el.set_drag_dest_row(  new  Gtk.TreePath.from_string( treepath ), pos);
 826                   } else {
 827                     this.el.set_drag_dest_row(null, Gtk.TreeViewDropPosition.INTO_OR_AFTER);
 828                  }
 829
 830         }
 831         public           void selectNode (string treepath_str, string source) {
 832                 this.lastEventSource = source;
 833             //this.selection.select_path(new  Gtk.TreePath.from_string( treepath_str));
 834              var tp = new Gtk.TreePath.from_string(treepath_str);
 835
 836              this.el.set_cursor(tp, null, false);
 837              this.el.scroll_to_cell(tp, null, false, 0,0);
 838         }
 839     }
 840     public class Xcls_model : Object
 841     {
 842         public Gtk.TreeStore el;
 843         private Xcls_WindowLeftTree  _this;
 844
 845
 846             // my vars (def)
 847         public DialogTemplateSelect template_select;
 848         public string activePath;
 849
 850         // ctor
 851         public Xcls_model(Xcls_WindowLeftTree _owner )
 852         {
 853             _this = _owner;
 854             _this.model = this;
 855             this.el = new Gtk.TreeStore( 3, typeof(string),typeof(string),typeof(Object) );
 856
 857             // my vars (dec)
 858             this.template_select = null;
 859             this.activePath = "";
 860
 861             // set gobject values
 862
 863             // init method
 864
 865             print("model initialized");
 866         }
 867
 868         // user defined functions
 869         public           string findDropNode (string treepath_str, string[] targets) {
 870
 871             // this is used by the dragdrop code in the roo version AFAIR..
 872
 873             //var path = treepath_str.replace(/^builder-/, '');
 874             // treemap is depreciated... - should really check if model has any entries..
 875
 876             if (this.el.iter_n_children(null) < 1) {
 877                 //print("NO KEYS");
 878                 return "|%d".printf((int)Gtk.TreeViewDropPosition.INTO_OR_AFTER);
 879             }
 880             //print("FIND treepath: " + path);
 881             //console.dump(this.treemap);
 882
 883             //if (!treepath_str.match(/^builder-/)) {
 884             //    return []; // nothing!
 885             //}
 886             if (targets.length > 0 && targets[0] == "*") {
 887                 return  treepath_str;
 888             }
 889             return this.findDropNodeByPath(treepath_str,targets, -1);
 890         }
 891         public           void loadFile (JsRender.JsRender f) {
 892             //console.dump(f);
 893             this.el.clear();
 894
 895             // needed???
 896             _this.main_window.windowstate.file = f;
 897
 898
 899             if (f.tree == null) {
 900                     try {
 901                         f.loadItems( );
 902                 } catch (Error e) {
 903                         return;
 904                 }
 905             }
 906             // if it's still null?
 907             if (f.tree == null) {
 908                 return;
 909             }
 910
 911             var o = new Gee.ArrayList<JsRender.Node>();
 912             o.add(f.tree);
 913             this.load(o,null);
 914
 915             _this.view.el.expand_all();
 916
 917             if (f.tree.items.size < 1) {
 918                 // single item..
 919
 920                 //this.get('/Window.leftvpaned').el.set_position(80);
 921                 // select first...
 922                 _this.view.el.set_cursor(
 923                     new  Gtk.TreePath.from_string("0"), null, false);
 924
 925
 926             } else {
 927                   //this.get('/Window.leftvpaned').el.set_position(200);
 928             }
 929
 930             return;
 931
 932
 933         }
 934         public    void updateSelected () {
 935
 936
 937             var s = _this.view.el.get_selection();
 938
 939              Gtk.TreeIter iter;
 940             Gtk.TreeModel mod;
 941
 942
 943
 944             if (!s.get_selected(out mod, out iter)) {
 945                 return; // nothing seleted..
 946             }
 947
 948           GLib.Value value;
 949             this.el.get_value(iter, 2, out value);
 950             var node = (JsRender.Node)(value.get_object());
 951
 952               this.el.set(iter, 0, node.nodeTitle(),
 953                         1, node.nodeTip(), -1
 954                 );
 955         }
 956         public           string findDropNodeByPath (string treepath_str, string[] targets, int in_pref = -1) {
 957
 958             var path = treepath_str; // dupe it..
 959
 960
 961             // pref : 3 = ontop - 0 = after, 1 = before
 962             int pref = in_pref < 0  ?  Gtk.TreeViewDropPosition.INTO_OR_AFTER : in_pref;
 963
 964             var last = "";
 965
 966             //console.dump(this.treemap);
 967
 968             print("findDropNodeByPath : got path length %d / %s\n", path.length, path);
 969
 970             if (path.length == 0) {
 971                 // top drop. // just return empty..
 972                 return "|%d".printf((int)pref) ;
 973
 974             }
 975
 976
 977             while (path.length > 0) {
 978
 979                 if (path.length == treepath_str.length && pref != Gtk.TreeViewDropPosition.INTO_OR_AFTER) {
 980                     if (path.last_index_of(":") < 0 ) {
 981                         return "";
 982                     }
 983                     path = path.substring(0, path.last_index_of(":"));
 984                     last = treepath_str;
 985                     print("DROP  before or after : using %s\n",path);
 986                     continue;
 987                 }
 988
 989                 //print("LOOKING FOR PATH: " + path);
 990                 var node_data = this.pathToNode(path);
 991
 992                 if (node_data == null) {
 993                     print("node not found");
 994                     return "";
 995                 }
 996
 997                 var xname = node_data.fqn();
 998                 var match = "";
 999                 var prop = "";
1000
1001                 for (var i =0; i < targets.length; i++)  {
1002                     var tg = targets[i];
1003                     if ((tg == xname)  ) {
1004                         match = tg;
1005                         break;
1006                     }
1007                     // if target is "xxxx:name"
1008                     if (tg.contains(xname +":")) {
1009                         match = tg;
1010                         var ar = tg.split(":");
1011                         prop = ar[1];
1012                         break;
1013                     }
1014                 }
1015
1016                 if (match.length > 0) {
1017                     if (last.length > 0) { // pref is after/before..
1018                         // then it's after last
1019                         //if (pref > 1) {
1020                         //    return "";
1021                         //}
1022                         return last + "|%d".printf((int)pref) + "|" + prop;
1023
1024
1025                     }
1026                     // we need to add prop - as :store -> needs to bee added when dropping onto.
1027                     return path + "|%d".printf( (int) Gtk.TreeViewDropPosition.INTO_OR_AFTER)  + "|" + prop;
1028                 }
1029                 /*
1030                 last = "" + path;
1031                 var par = path.split(":");
1032                 string [] ppar = {};
1033                 for (var i = 0; i < par.length-1; i++) {
1034                     ppar += par[i];
1035                 }
1036
1037                 path = string.joinv(":", ppar);
1038                 */
1039                 break;
1040
1041             }
1042
1043             return "";
1044
1045         }
1046         public           void moveNode (string target_data, Gdk.DragAction action)
1047         {
1048
1049            /// target_data = "path|pos");
1050
1051
1052             //print("MOVE NODE");
1053             // console.dump(target_data);
1054             Gtk.TreeIter old_iter;
1055             Gtk.TreeModel mod;
1056
1057             var s = _this.view.el.get_selection();
1058             s.get_selected(out mod , out old_iter);
1059             mod.get_path(old_iter);
1060
1061             var node = this.pathToNode(mod.get_path(old_iter).to_string());
1062             //console.dump(node);
1063             if (node == null) {
1064                 print("moveNode: ERROR - node is null?");
1065             }
1066
1067
1068
1069             // needs to drop first, otherwise the target_data
1070             // treepath will be invalid.
1071
1072
1073             if ((action & Gdk.DragAction.MOVE) > 0) {
1074                     print("REMOVING OLD NODE : " + target_data + "\n");
1075                     node.remove();
1076                     this.dropNode(target_data, node, false);
1077                     this.el.remove(ref old_iter);
1078
1079
1080
1081             } else {
1082                 print("DROPPING NODE // copy: " + target_data + "\n");
1083                 node = node.deepClone();
1084                 this.dropNode(target_data, node, false);
1085             }
1086             _this.changed();
1087             this.activePath= "";
1088             //this.updateNode(false,true);
1089         }
1090         public           void load (Gee.ArrayList<JsRender.Node> tr, Gtk.TreeIter? iter)
1091         {
1092             Gtk.TreeIter citer;
1093             //this.insert(citer,iter,0);
1094             for(var i =0 ; i < tr.size; i++) {
1095                 if (iter != null) {
1096                     this.el.insert(out citer,iter,-1); // why not append?
1097                 } else {
1098                     this.el.append(out citer,null);
1099                 }
1100
1101                 this.el.set(citer, 0, tr.get(i).nodeTitle(),
1102                         1, tr.get(i).nodeTip(), -1
1103                 );
1104                 var o =   GLib.Value(typeof(Object));
1105                 o.set_object((Object)tr.get(i));
1106
1107                 this.el.set_value(citer, 2, o);
1108
1109                 if (tr.get(i).items.size > 0) {
1110                     this.load(tr.get(i).items, citer);
1111                 }
1112
1113             }
1114
1115
1116         }
1117         public           void deleteSelected () {
1118
1119             print("DELETE SELECTED?");
1120             //_this.view.blockChanges = true;
1121             print("GET SELECTION?");
1122
1123             var s = _this.view.el.get_selection();
1124
1125             print("GET  SELECTED?");
1126            Gtk.TreeIter iter;
1127             Gtk.TreeModel mod;
1128
1129
1130             if (!s.get_selected(out mod, out iter)) {
1131                 return; // nothing seleted..
1132             }
1133
1134
1135
1136             this.activePath= "";
1137             print("GET  vnode value?");
1138
1139             GLib.Value value;
1140             this.el.get_value(iter, 2, out value);
1141             var data = (JsRender.Node)(value.get_object());
1142             print("removing node from Render\n");
1143             if (data.parent == null) {
1144                _this.main_window.windowstate.file.tree = null;
1145             } else {
1146                 data.remove();
1147             }
1148             print("removing node from Tree\n");
1149             s.unselect_all();
1150             this.el.remove(ref iter);
1151
1152
1153
1154
1155             //
1156
1157
1158
1159
1160             this.activePath= ""; // again!?!?
1161             //this.changed(null,true);
1162
1163             _this.changed();
1164
1165             _this.view.blockChanges = false;
1166         }
1167         public           JsRender.Node pathToNode (string path) {
1168
1169
1170              Gtk.TreeIter   iter;
1171              _this.model.el.get_iter_from_string(out iter, path);
1172
1173              GLib.Value value;
1174              _this.model.el.get_value(iter, 2, out value);
1175
1176              return (JsRender.Node)value.dup_object();
1177
1178         }
1179         public           void dropNode (string target_data_str, JsRender.Node node, bool show_templates) {
1180         //         print("drop Node");
1181              // console.dump(node);
1182           //    console.dump(target_data);
1183
1184
1185                 // 0 = before , 1=after 2/3 onto
1186
1187
1188                 var target_data= target_data_str.split("|");
1189
1190                 var parent_str = target_data[0].length > 0 ? target_data[0] : "";
1191                 var pos = target_data.length > 1 ? int.parse(target_data[1]) : 2; // ontop..
1192
1193
1194                 Gtk.TreePath tree_path  =   parent_str.length > 0 ? new  Gtk.TreePath.from_string( parent_str ) : null;
1195
1196
1197
1198                 //print("add " + tp + "@" + target_data[1]  );
1199
1200                 JsRender.Node parentNode = null;
1201
1202                 Gtk.TreeIter iter_after;
1203                 Gtk.TreeIter iter_par ;
1204
1205
1206                  if (target_data.length == 3 && target_data[2].length > 0) {
1207                     node.props.set("* prop", target_data[2]);
1208                 }
1209
1210                 Gtk.TreePath expand_parent = null;
1211
1212                 // we only need to show the template if it's come from else where?
1213                  if (show_templates) {
1214
1215                      var ts = _this.main_window.windowstate.template_select;
1216
1217                      var new_node = ts.show(
1218                           _this.main_window, // (Gtk.Window) _this.el.get_toplevel (),
1219                          _this.main_window.windowstate.file.palete(),
1220                             node,
1221                             _this.main_window.windowstate.project);
1222
1223                      if (new_node == null) {
1224                          return; // do not add?
1225                      }
1226                      node = new_node;
1227                 }
1228
1229                  //print("pos is %d  \n".printf(pos));
1230
1231                  Gtk.TreeIter n_iter;
1232
1233                  if ( parent_str.length < 1) {
1234                       this.el.append(out n_iter, null); // drop at top level..
1235                       node.parent = null;
1236                       _this.main_window.windowstate.file.tree = node;
1237
1238
1239                 } else   if (pos  < 2) {
1240                     //print(target_data[1]  > 0 ? 'insert_after' : 'insert_before');
1241
1242                     this.el.get_iter(out iter_after, tree_path );
1243                     this.el.iter_parent(out iter_par, iter_after);
1244                     expand_parent = this.el.get_path(iter_par);
1245
1246                     GLib.Value value;
1247                     this.el.get_value( iter_par, 2, out value);
1248                     parentNode =  (JsRender.Node)value.dup_object();
1249
1250
1251                     this.el.get_value( iter_after, 2, out value);
1252                     var relNode =  (JsRender.Node)value.dup_object();
1253
1254                     if ( pos  > 0 ) {
1255
1256                         this.el.insert_after(out n_iter,    iter_par  , iter_after);
1257                         var ix = parentNode.items.index_of(relNode);
1258                         parentNode.items.insert(ix+1, node);
1259
1260                     } else {
1261                         this.el.insert_before(out n_iter,  iter_par  , iter_after);
1262                         var ix = parentNode.items.index_of(relNode);
1263                         parentNode.items.insert(ix, node);
1264
1265                     }
1266                     node.parent = parentNode;
1267
1268
1269
1270                 } else {
1271                    //  print("appending to  " + parent_str);
1272                     this.el.get_iter(out iter_par, tree_path);
1273                     this.el.append(out n_iter,   iter_par );
1274                     expand_parent = this.el.get_path(iter_par);
1275
1276                     GLib.Value value;
1277                     this.el.get_value( iter_par, 2, out value);
1278                     parentNode =  (JsRender.Node)value.dup_object();
1279                     node.parent = parentNode;
1280                     parentNode.items.add(node);
1281                 }
1282
1283                 // reparent node in tree...
1284
1285
1286                 // why only on no parent???
1287
1288                 //if (node.parent = null) {
1289
1290
1291
1292                 //}
1293
1294
1295                 // work out what kind of packing to use.. -- should be in
1296                 if (!node.has("pack")   && parent_str.length > 1) {
1297
1298                     _this.main_window.windowstate.file.palete().fillPack(node,parentNode);
1299
1300
1301                 }
1302
1303                 // add the node...
1304
1305                 this.el.set(n_iter, 0, node.nodeTitle(), 1, node.nodeTip(), -1  );
1306                 var o =   GLib.Value(typeof(Object));
1307                 o.set_object((Object)node);
1308
1309                 this.el.set_value(n_iter, 2, o);
1310
1311
1312
1313
1314         // load children - if it has any..
1315
1316                 if (node.items.size > 0) {
1317                     this.load(node.items, n_iter);
1318                     _this.view.el.expand_row(this.el.get_path(n_iter), true);
1319                 } else if (expand_parent != null && !_this.view.el.is_row_expanded(expand_parent)) {
1320                    _this.view.el.expand_row(expand_parent,true);
1321                 }
1322
1323                 //if (tp != null && (node.items.length() > 0 || pos > 1)) {
1324                 //    _this.view.el.expand_row(this.el.get_path(iter_par), true);
1325                // }
1326                 // wee need to get the empty proptypes from somewhere..
1327
1328                 //var olditer = this.activeIter;
1329                 this.activePath = this.el.get_path(n_iter).to_string();
1330
1331
1332
1333
1334                 _this.view.el.set_cursor(this.el.get_path(n_iter), null, false);
1335                 _this.changed();
1336
1337
1338
1339         }
1340         public string treePathFromNode (JsRender.Node node) {
1341             // iterate through the tree and find the node
1342             var ret = "";
1343
1344             this.el.foreach((mod, pth, iter) => {
1345                 // get the node..
1346
1347
1348                  GLib.Value value;
1349                  _this.model.el.get_value(iter, 2, out value);
1350
1351
1352
1353                  var n = (JsRender.Node)value;
1354
1355                  print("compare %s to %s\n", n.fqn(), node.fqn());
1356                 if (node == n) {
1357                     ret = pth.to_string();
1358                     return true;
1359                 }
1360                 return false;
1361             });
1362             return ret;
1363
1364         }
1365     }
1366
1367     public class Xcls_TreeViewColumn4 : Object
1368     {
1369         public Gtk.TreeViewColumn el;
1370         private Xcls_WindowLeftTree  _this;
1371
1372
1373             // my vars (def)
1374
1375         // ctor
1376         public Xcls_TreeViewColumn4(Xcls_WindowLeftTree _owner )
1377         {
1378             _this = _owner;
1379             this.el = new Gtk.TreeViewColumn();
1380
1381             // my vars (dec)
1382
1383             // set gobject values
1384             this.el.title = "test";
1385             var child_0 = new Xcls_renderer( _this );
1386             child_0.ref();
1387             this.el.pack_start (  child_0.el , true );
1388
1389             // init method
1390
1391             this.el.add_attribute(_this.renderer.el , "markup", 0 );
1392         }
1393
1394         // user defined functions
1395     }
1396     public class Xcls_renderer : Object
1397     {
1398         public Gtk.CellRendererText el;
1399         private Xcls_WindowLeftTree  _this;
1400
1401
1402             // my vars (def)
1403
1404         // ctor
1405         public Xcls_renderer(Xcls_WindowLeftTree _owner )
1406         {
1407             _this = _owner;
1408             _this.renderer = this;
1409             this.el = new Gtk.CellRendererText();
1410
1411             // my vars (dec)
1412
1413             // set gobject values
1414         }
1415
1416         // user defined functions
1417     }
1418
1419
1420
1421     public class Xcls_LeftTreeMenu : Object
1422     {
1423         public Gtk.Menu el;
1424         private Xcls_WindowLeftTree  _this;
1425
1426
1427             // my vars (def)
1428
1429         // ctor
1430         public Xcls_LeftTreeMenu(Xcls_WindowLeftTree _owner )
1431         {
1432             _this = _owner;
1433             _this.LeftTreeMenu = this;
1434             this.el = new Gtk.Menu();
1435
1436             // my vars (dec)
1437
1438             // set gobject values
1439             var child_0 = new Xcls_MenuItem7( _this );
1440             child_0.ref();
1441             this.el.add (  child_0.el  );
1442             var child_1 = new Xcls_MenuItem8( _this );
1443             child_1.ref();
1444             this.el.add (  child_1.el  );
1445             var child_2 = new Xcls_MenuItem9( _this );
1446             child_2.ref();
1447             this.el.add (  child_2.el  );
1448         }
1449
1450         // user defined functions
1451     }
1452     public class Xcls_MenuItem7 : Object
1453     {
1454         public Gtk.MenuItem el;
1455         private Xcls_WindowLeftTree  _this;
1456
1457
1458             // my vars (def)
1459
1460         // ctor
1461         public Xcls_MenuItem7(Xcls_WindowLeftTree _owner )
1462         {
1463             _this = _owner;
1464             this.el = new Gtk.MenuItem();
1465
1466             // my vars (dec)
1467
1468             // set gobject values
1469             this.el.label = "Delete Element";
1470
1471             //listeners
1472             this.el.activate.connect( ( ) => {
1473
1474                 print("ACTIVATE?");
1475
1476
1477                  _this.model.deleteSelected();
1478             });
1479         }
1480
1481         // user defined functions
1482     }
1483
1484     public class Xcls_MenuItem8 : Object
1485     {
1486         public Gtk.MenuItem el;
1487         private Xcls_WindowLeftTree  _this;
1488
1489
1490             // my vars (def)
1491
1492         // ctor
1493         public Xcls_MenuItem8(Xcls_WindowLeftTree _owner )
1494         {
1495             _this = _owner;
1496             this.el = new Gtk.MenuItem();
1497
1498             // my vars (dec)
1499
1500             // set gobject values
1501             this.el.label = "Save as Template";
1502
1503             //listeners
1504             this.el.activate.connect( () => {
1505
1506                  DialogSaveTemplate.singleton().show(
1507                         (Gtk.Window) _this.el.get_toplevel (),
1508                         _this.main_window.windowstate.file.palete(),
1509                         _this.getActiveElement()
1510                 );
1511
1512
1513             });
1514         }
1515
1516         // user defined functions
1517     }
1518
1519     public class Xcls_MenuItem9 : Object
1520     {
1521         public Gtk.MenuItem el;
1522         private Xcls_WindowLeftTree  _this;
1523
1524
1525             // my vars (def)
1526
1527         // ctor
1528         public Xcls_MenuItem9(Xcls_WindowLeftTree _owner )
1529         {
1530             _this = _owner;
1531             this.el = new Gtk.MenuItem();
1532
1533             // my vars (dec)
1534
1535             // set gobject values
1536             this.el.label = "Save as Module";
1537
1538             //listeners
1539             this.el.activate.connect( () => {
1540                 var node = _this.getActiveElement();
1541                  var name = DialogSaveModule.singleton().show(
1542                         (Gtk.Window) _this.el.get_toplevel (),
1543                         _this.main_window.windowstate.project,
1544                         node
1545                  );
1546                  if (name.length < 1) {
1547                         return;
1548
1549                  }
1550                  node.props.set("* xinclude", name);
1551                  node.items.clear();
1552
1553
1554                 var s = _this.view.el.get_selection();
1555
1556                 print("GET  SELECTED?");
1557                 Gtk.TreeIter iter;
1558                 Gtk.TreeModel mod;
1559
1560
1561                 if (!s.get_selected(out mod, out iter)) {
1562                     return; // nothing seleted..
1563                 }
1564                 Gtk.TreeIter citer;
1565                 var n_cn = mod.iter_n_children(iter) -1;
1566                 for (var i = n_cn; i > -1; i--) {
1567                     mod.iter_nth_child(out citer, iter, i);
1568
1569
1570                     print("removing node from Tree\n");
1571
1572                     _this.model.el.remove(ref citer);
1573                 }
1574                 _this.changed();
1575                 _this.node_selected(node, "tree");
1576
1577
1578             });
1579         }
1580
1581         // user defined functions
1582     }
1583
1584
1585 }