src/viklayerspanel.c

   1 /*
   2  * viking -- GPS Data and Topo Analyzer, Explorer, and Manager
   3  *
   4  * Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  */
  21
  22 #include "viking.h"
  23
  24 #include <string.h>
  25
  26 enum {
  27   VLP_UPDATE_SIGNAL,
  28   VLP_LAST_SIGNAL
  29 };
  30
  31 static void layers_panel_class_init ( VikLayersPanelClass *klass );
  32 static void layers_panel_init ( VikLayersPanel *vlp );
  33 static void layers_item_edited (VikLayersPanel *vlp, GtkTreeIter *iter, const gchar *new_text);
  34 static void layers_item_toggled (VikLayersPanel *vlp, GtkTreeIter *iter);
  35
  36 static guint layers_panel_signals[VLP_LAST_SIGNAL] = { 0 };
  37
  38 static GObjectClass *parent_class;
  39
  40 struct _VikLayersPanel {
  41   GtkVBox vbox;
  42
  43   VikAggregateLayer *toplayer;
  44   GtkTreeIter toplayer_iter;
  45
  46   VikTreeview *vt;
  47   VikViewport *vvp; /* reference */
  48
  49   GtkItemFactory *popup_factory;
  50 };
  51
  52 static GtkItemFactoryEntry base_entries[] = {
  53  { "/C_ut", NULL, (GtkItemFactoryCallback) vik_layers_panel_cut_selected, -1, "<StockItem>", GTK_STOCK_CUT },
  54  { "/_Copy", NULL, (GtkItemFactoryCallback) vik_layers_panel_copy_selected, -1, "<StockItem>", GTK_STOCK_COPY },
  55  { "/_Paste", NULL, (GtkItemFactoryCallback) vik_layers_panel_paste_selected, -1, "<StockItem>", GTK_STOCK_PASTE },
  56  { "/_Delete", NULL, (GtkItemFactoryCallback) vik_layers_panel_delete_selected, -1, "<StockItem>", GTK_STOCK_DELETE },
  57  { "/New Layer", NULL, NULL, -1, "<Branch>" },
  58 };
  59
  60 #define NUM_BASE_ENTRIES 5
  61
  62 static void layers_item_toggled (VikLayersPanel *vlp, GtkTreeIter *iter);
  63 static void layers_item_edited (VikLayersPanel *vlp, GtkTreeIter *iter, const gchar *new_text);
  64 static void layers_popup_cb (VikLayersPanel *vlp);
  65 static void layers_popup ( VikLayersPanel *vlp, GtkTreeIter *iter, gint mouse_button );
  66 static gboolean layers_button_press_cb (VikLayersPanel *vlp, GdkEventButton *event);
  67 static void layers_move_item ( VikLayersPanel *vlp, gboolean up );
  68 static void layers_move_item_up ( VikLayersPanel *vlp );
  69 static void layers_move_item_down ( VikLayersPanel *vlp );
  70 static void layers_panel_finalize ( GObject *gob );
  71
  72 GType vik_layers_panel_get_type()
  73 {
  74   static GType vlp_type = 0;
  75
  76   if (!vlp_type)
  77   {
  78     static const GTypeInfo vlp_info =
  79     {
  80       sizeof (VikLayersPanelClass),
  81       NULL, /* base_init */
  82       NULL, /* base_finalize */
  83       (GClassInitFunc) layers_panel_class_init,
  84       NULL, /* class_finalize */
  85       NULL, /* class_data */
  86       sizeof (VikLayersPanel),
  87       0,
  88       (GInstanceInitFunc) layers_panel_init,
  89     };
  90     vlp_type = g_type_register_static ( GTK_TYPE_VBOX, "VikLayersPanel", &vlp_info, 0 );
  91   }
  92
  93   return vlp_type;
  94 }
  95
  96 static void layers_panel_class_init ( VikLayersPanelClass *klass )
  97 {
  98   GObjectClass *object_class;
  99
 100   object_class = G_OBJECT_CLASS (klass);
 101
 102   object_class->finalize = layers_panel_finalize;
 103
 104   parent_class = g_type_class_peek_parent (klass);
 105
 106   layers_panel_signals[VLP_UPDATE_SIGNAL] = g_signal_new ( "update", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (VikLayersPanelClass, update), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
 107 }
 108
 109 VikLayersPanel *vik_layers_panel_new ()
 110 {
 111   return VIK_LAYERS_PANEL ( g_object_new ( VIK_LAYERS_PANEL_TYPE, NULL ) );
 112 }
 113
 114 void vik_layers_panel_set_viewport ( VikLayersPanel *vlp, VikViewport *vvp )
 115 {
 116   vlp->vvp = vvp;
 117   /* TODO: also update GCs (?) */
 118 }
 119
 120 VikViewport *vik_layers_panel_get_viewport ( VikLayersPanel *vlp )
 121 {
 122   return vlp->vvp;
 123 }
 124
 125 static void layers_panel_init ( VikLayersPanel *vlp )
 126 {
 127   GtkWidget *hbox;
 128   GtkWidget *upbutton, *upimage, *downbutton, *downimage;
 129   GtkWidget *scrolledwindow;
 130   GtkItemFactoryEntry entry;
 131   guint i, tmp;
 132
 133   vlp->vvp = NULL;
 134
 135   hbox = gtk_hbox_new ( TRUE, 2 );
 136   vlp->vt = vik_treeview_new ( );
 137
 138   vlp->toplayer = vik_aggregate_layer_new ();
 139   vik_layer_rename ( VIK_LAYER(vlp->toplayer), "Top Layer");
 140   g_signal_connect_swapped ( G_OBJECT(vlp->toplayer), "update", G_CALLBACK(vik_layers_panel_emit_update), vlp );
 141
 142   vik_treeview_add_layer ( vlp->vt, NULL, &(vlp->toplayer_iter), VIK_LAYER(vlp->toplayer)->name, NULL, vlp->toplayer, VIK_LAYER_AGGREGATE, VIK_LAYER_AGGREGATE );
 143   vik_layer_realize ( VIK_LAYER(vlp->toplayer), vlp->vt, &(vlp->toplayer_iter) );
 144
 145   g_signal_connect_swapped ( vlp->vt, "popup_menu", G_CALLBACK(layers_popup_cb), vlp);
 146   g_signal_connect_swapped ( vlp->vt, "button_press_event", G_CALLBACK(layers_button_press_cb), vlp);
 147   g_signal_connect_swapped ( vlp->vt, "item_toggled", G_CALLBACK(layers_item_toggled), vlp);
 148   g_signal_connect_swapped ( vlp->vt, "item_edited", G_CALLBACK(layers_item_edited), vlp);
 149
 150   upimage = gtk_image_new_from_stock ( GTK_STOCK_GO_UP, GTK_ICON_SIZE_BUTTON );
 151   upbutton = gtk_button_new ( );
 152   gtk_container_add ( GTK_CONTAINER(upbutton), upimage );
 153   gtk_box_pack_start ( GTK_BOX(hbox), upbutton, TRUE, TRUE, 0 );
 154   g_signal_connect_swapped ( G_OBJECT(upbutton), "clicked", G_CALLBACK(layers_move_item_up), vlp );
 155   downimage = gtk_image_new_from_stock ( GTK_STOCK_GO_DOWN, GTK_ICON_SIZE_BUTTON );
 156   downbutton = gtk_button_new ( );
 157   gtk_container_add ( GTK_CONTAINER(downbutton), downimage );
 158   gtk_box_pack_start ( GTK_BOX(hbox), downbutton, TRUE, TRUE, 0 );
 159   g_signal_connect_swapped ( G_OBJECT(downbutton), "clicked", G_CALLBACK(layers_move_item_down), vlp );
 160
 161   scrolledwindow = gtk_scrolled_window_new ( NULL, NULL );
 162   gtk_scrolled_window_set_policy ( GTK_SCROLLED_WINDOW(scrolledwindow), GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC );
 163   gtk_container_add ( GTK_CONTAINER(scrolledwindow), GTK_WIDGET(vlp->vt) );
 164
 165   gtk_box_pack_start ( GTK_BOX(vlp), scrolledwindow, TRUE, TRUE, 0 );
 166   gtk_box_pack_start ( GTK_BOX(vlp), hbox, FALSE, FALSE, 0 );
 167
 168   vlp->popup_factory = gtk_item_factory_new ( GTK_TYPE_MENU, "<main>", NULL );
 169   gtk_item_factory_create_items ( vlp->popup_factory, NUM_BASE_ENTRIES, base_entries, vlp );
 170   for ( i = 0; i < VIK_LAYER_NUM_TYPES; i++ )
 171   {
 172     /* TODO: FIXME: if name has a '/' in it it will get all messed up. why not have an itemfactory field with
 173                     name, icon, shortcut, etc.? */
 174     entry.path = g_strdup_printf("%s/New %s Layer", base_entries[NUM_BASE_ENTRIES-1].path, vik_layer_get_interface(i)->name );
 175     entry.accelerator = NULL;
 176     entry.callback = (GtkItemFactoryCallback) vik_layers_panel_new_layer;
 177     entry.callback_action = i;
 178     if ( vik_layer_get_interface(i)->icon )
 179     {
 180       entry.item_type = "<ImageItem>";
 181       entry.extra_data = gdk_pixdata_serialize ( vik_layer_get_interface(i)->icon, &tmp );
 182     }
 183     else
 184       entry.item_type = "<Item>";
 185
 186     gtk_item_factory_create_item ( vlp->popup_factory, &entry, vlp, 1 );
 187     g_free ( (gpointer) entry.extra_data );
 188     g_free ( entry.path );
 189   }
 190 }
 191
 192 void vik_layers_panel_emit_update ( VikLayersPanel *vlp )
 193 {
 194   g_signal_emit ( G_OBJECT(vlp), layers_panel_signals[VLP_UPDATE_SIGNAL], 0 );
 195 }
 196
 197 static void layers_item_toggled (VikLayersPanel *vlp, GtkTreeIter *iter)
 198 {
 199   gboolean visible;
 200   gpointer p;
 201   gint type;
 202
 203   /* get type and data */
 204   type = vik_treeview_item_get_type ( vlp->vt, iter );
 205   p = vik_treeview_item_get_pointer ( vlp->vt, iter );
 206
 207   switch ( type )
 208   {
 209     case VIK_TREEVIEW_TYPE_LAYER: visible = (VIK_LAYER(p)->visible ^= 1); break;
 210     case VIK_TREEVIEW_TYPE_SUBLAYER: visible = vik_layer_sublayer_toggle_visible ( VIK_LAYER(vik_treeview_item_get_parent(vlp->vt, iter)), vik_treeview_item_get_data(vlp->vt, iter), p); break;
 211     default: return;
 212   }
 213
 214   vik_treeview_item_set_visible ( vlp->vt, iter, visible );
 215
 216   vik_layers_panel_emit_update ( vlp );
 217 }
 218
 219 static void layers_item_edited (VikLayersPanel *vlp, GtkTreeIter *iter, const gchar *new_text)
 220 {
 221   if ( vik_treeview_item_get_type ( vlp->vt, iter ) == VIK_TREEVIEW_TYPE_LAYER )
 222   {
 223     VikLayer *l;
 224
 225     /* get iter and layer */
 226     l = VIK_LAYER ( vik_treeview_item_get_pointer ( vlp->vt, iter ) );
 227
 228     if ( strcmp ( l->name, new_text ) != 0 )
 229     {
 230       vik_layer_rename ( l, new_text );
 231       vik_treeview_item_set_name ( vlp->vt, iter, l->name );
 232     }
 233   }
 234   else
 235   {
 236     const gchar *name = vik_layer_sublayer_rename_request ( vik_treeview_item_get_parent ( vlp->vt, iter ), new_text, vlp, vik_treeview_item_get_data ( vlp->vt, iter ), vik_treeview_item_get_pointer ( vlp->vt, iter ), iter );
 237     if ( name )
 238       vik_treeview_item_set_name ( vlp->vt, iter, name);
 239   }
 240 }
 241
 242 static gboolean layers_button_press_cb ( VikLayersPanel *vlp, GdkEventButton *event )
 243 {
 244   if (event->button == 3)
 245   {
 246     GtkTreeIter iter;
 247     if ( vik_treeview_get_iter_at_pos ( vlp->vt, &iter, event->x, event->y ) )
 248     {
 249       layers_popup ( vlp, &iter, 3 );
 250       vik_treeview_item_select ( vlp->vt, &iter );
 251     }
 252     else
 253       layers_popup ( vlp, NULL, 3 );
 254     return TRUE;
 255   }
 256   return FALSE;
 257 }
 258
 259 static void layers_popup ( VikLayersPanel *vlp, GtkTreeIter *iter, gint mouse_button )
 260 {
 261   GtkMenu *menu = NULL;
 262
 263
 264   if ( iter )
 265   {
 266     if ( vik_treeview_item_get_type ( vlp->vt, iter ) == VIK_TREEVIEW_TYPE_LAYER )
 267     {
 268       VikLayer *layer = VIK_LAYER(vik_treeview_item_get_pointer ( vlp->vt, iter ));
 269
 270       if ( layer->type == VIK_LAYER_AGGREGATE )
 271         menu = GTK_MENU(gtk_item_factory_get_widget ( vlp->popup_factory, "<main>" ));
 272       else
 273       {
 274         GtkWidget *del, *prop;
 275         VikStdLayerMenuItem menu_selection = vik_layer_get_menu_items_selection(layer);
 276
 277         menu = GTK_MENU ( gtk_menu_new () );
 278
 279         if (menu_selection & VIK_MENU_ITEM_PROPERTY) {
 280           prop = gtk_image_menu_item_new_from_stock ( GTK_STOCK_PROPERTIES, NULL );
 281           g_signal_connect_swapped ( G_OBJECT(prop), "activate", G_CALLBACK(vik_layers_panel_properties), vlp );
 282           gtk_menu_shell_append (GTK_MENU_SHELL (menu), prop);
 283           gtk_widget_show ( prop );
 284         }
 285
 286         if (menu_selection & VIK_MENU_ITEM_CUT) {
 287           del = gtk_image_menu_item_new_from_stock ( GTK_STOCK_CUT, NULL );
 288           g_signal_connect_swapped ( G_OBJECT(del), "activate", G_CALLBACK(vik_layers_panel_cut_selected), vlp );
 289           gtk_menu_shell_append (GTK_MENU_SHELL (menu), del);
 290           gtk_widget_show ( del );
 291         }
 292
 293         if (menu_selection & VIK_MENU_ITEM_COPY) {
 294           del = gtk_image_menu_item_new_from_stock ( GTK_STOCK_COPY, NULL );
 295           g_signal_connect_swapped ( G_OBJECT(del), "activate", G_CALLBACK(vik_layers_panel_copy_selected), vlp );
 296           gtk_menu_shell_append (GTK_MENU_SHELL (menu), del);
 297           gtk_widget_show ( del );
 298         }
 299
 300         if (menu_selection & VIK_MENU_ITEM_PASTE) {
 301           del = gtk_image_menu_item_new_from_stock ( GTK_STOCK_PASTE, NULL );
 302           g_signal_connect_swapped ( G_OBJECT(del), "activate", G_CALLBACK(vik_layers_panel_paste_selected), vlp );
 303           gtk_menu_shell_append (GTK_MENU_SHELL (menu), del);
 304           gtk_widget_show ( del );
 305         }
 306
 307         if (menu_selection & VIK_MENU_ITEM_DELETE) {
 308           del = gtk_image_menu_item_new_from_stock ( GTK_STOCK_DELETE, NULL );
 309           g_signal_connect_swapped ( G_OBJECT(del), "activate", G_CALLBACK(vik_layers_panel_delete_selected), vlp );
 310           gtk_menu_shell_append (GTK_MENU_SHELL (menu), del);
 311           gtk_widget_show ( del );
 312         }
 313
 314         vik_layer_add_menu_items ( layer, menu, vlp );
 315       }
 316     }
 317     else
 318     {
 319       menu = GTK_MENU ( gtk_menu_new () );
 320       if ( ! vik_layer_sublayer_add_menu_items ( vik_treeview_item_get_parent ( vlp->vt, iter ), menu, vlp, vik_treeview_item_get_data ( vlp->vt, iter ), vik_treeview_item_get_pointer ( vlp->vt, iter ), iter ) )
 321       {
 322         gtk_widget_destroy ( GTK_WIDGET(menu) );
 323         return;
 324       }
 325       /* TODO: specific things for different types */
 326     }
 327   }
 328   else
 329     menu = GTK_MENU(gtk_item_factory_get_widget ( vlp->popup_factory, base_entries[NUM_BASE_ENTRIES-1].path ));
 330   gtk_menu_popup ( menu, NULL, NULL, NULL, NULL, mouse_button, gtk_get_current_event_time() );
 331 }
 332
 333 static void layers_popup_cb ( VikLayersPanel *vlp )
 334 {
 335   GtkTreeIter iter;
 336   layers_popup ( vlp, vik_treeview_get_selected_iter ( vlp->vt, &iter ) ? &iter : NULL, 0 );
 337 }
 338
 339 gboolean vik_layers_panel_new_layer ( VikLayersPanel *vlp, gint type )
 340 {
 341   VikLayer *l;
 342   g_assert ( vlp->vvp );
 343   l = vik_layer_create ( type, vlp->vvp, VIK_GTK_WINDOW_FROM_WIDGET(vlp), TRUE );
 344   if ( l )
 345   {
 346     vik_layers_panel_add_layer ( vlp, l );
 347     vik_layers_panel_emit_update ( vlp );
 348     return TRUE;
 349   }
 350   return FALSE;
 351 }
 352
 353 void vik_layers_panel_add_layer ( VikLayersPanel *vlp, VikLayer *l )
 354 {
 355   GtkTreeIter iter;
 356   GtkTreeIter *replace_iter = NULL;
 357
 358   /* could be something different so we have to do this */
 359   vik_layer_change_coord_mode ( l, vik_viewport_get_coord_mode(vlp->vvp) );
 360
 361   if ( ! vik_treeview_get_selected_iter ( vlp->vt, &iter ) )
 362     vik_aggregate_layer_add_layer ( vlp->toplayer, l );
 363   else
 364   {
 365     VikAggregateLayer *addtoagg;
 366     if (vik_treeview_item_get_type ( vlp->vt, &iter ) == VIK_TREEVIEW_TYPE_LAYER )
 367     {
 368       if ( IS_VIK_AGGREGATE_LAYER(vik_treeview_item_get_pointer ( vlp->vt, &iter )) )
 369          addtoagg = VIK_AGGREGATE_LAYER(vik_treeview_item_get_pointer ( vlp->vt, &iter ));
 370       else {
 371        VikLayer *vl = VIK_LAYER(vik_treeview_item_get_parent ( vlp->vt, &iter ));
 372        while ( ! IS_VIK_AGGREGATE_LAYER(vl) ) {
 373          iter = vl->iter;
 374          vl = VIK_LAYER(vik_treeview_item_get_parent ( vlp->vt, &vl->iter ));
 375          g_assert ( vl->realized );
 376        }
 377        addtoagg = VIK_AGGREGATE_LAYER(vl);
 378        replace_iter = &iter;
 379       }
 380     }
 381     else
 382     {
 383       /* a sublayer is selected, first get its parent (layer), then find the layer's parent (aggr. layer) */
 384       VikLayer *vl = VIK_LAYER(vik_treeview_item_get_parent ( vlp->vt, &iter ));
 385       replace_iter = &(vl->iter);
 386       g_assert ( vl->realized );
 387       addtoagg = VIK_AGGREGATE_LAYER(vik_treeview_item_get_parent ( vlp->vt, &(vl->iter) ) );
 388     }
 389     if ( replace_iter )
 390       vik_aggregate_layer_insert_layer ( addtoagg, l, replace_iter );
 391     else
 392       vik_aggregate_layer_add_layer ( addtoagg, l );
 393   }
 394 }
 395
 396 static void layers_move_item ( VikLayersPanel *vlp, gboolean up )
 397 {
 398   GtkTreeIter iter;
 399   VikAggregateLayer *parent;
 400
 401   /* TODO: deactivate the buttons and stuff */
 402   if ( ! vik_treeview_get_selected_iter ( vlp->vt, &iter ) )
 403     return;
 404
 405   vik_treeview_select_iter ( vlp->vt, &iter ); /* cancel any layer-name editing going on... */
 406
 407   if ( vik_treeview_item_get_type ( vlp->vt, &iter ) == VIK_TREEVIEW_TYPE_LAYER )
 408   {
 409     parent = VIK_AGGREGATE_LAYER(vik_treeview_item_get_parent ( vlp->vt, &iter ));
 410     if ( parent ) /* not toplevel */
 411     {
 412       vik_aggregate_layer_move_layer ( parent, &iter, up );
 413       vik_layers_panel_emit_update ( vlp );
 414     }
 415   }
 416 }
 417
 418 gboolean vik_layers_panel_properties ( VikLayersPanel *vlp )
 419 {
 420   GtkTreeIter iter;
 421   g_assert ( vlp->vvp );
 422
 423   if ( vik_treeview_get_selected_iter ( vlp->vt, &iter ) && vik_treeview_item_get_type ( vlp->vt, &iter ) == VIK_TREEVIEW_TYPE_LAYER )
 424   {
 425     if ( vik_treeview_item_get_data ( vlp->vt, &iter ) == VIK_LAYER_AGGREGATE )
 426       a_dialog_info_msg ( VIK_GTK_WINDOW_FROM_WIDGET(vlp), "Aggregate Layers have no settable properties." );
 427     vik_layer_properties ( VIK_LAYER( vik_treeview_item_get_pointer ( vlp->vt, &iter ) ), VIK_GTK_WINDOW_FROM_WIDGET(vlp->vt) );
 428     return TRUE;
 429   }
 430   else
 431     return FALSE;
 432 }
 433
 434 void vik_layers_panel_draw_all ( VikLayersPanel *vlp )
 435 {
 436   if ( vlp->vvp && VIK_LAYER(vlp->toplayer)->visible )
 437     vik_aggregate_layer_draw ( vlp->toplayer, vlp->vvp );
 438 }
 439
 440 void vik_layers_panel_draw_all_using_viewport ( VikLayersPanel *vlp, VikViewport *vvp )
 441 {
 442   if ( vlp->vvp && VIK_LAYER(vlp->toplayer)->visible )
 443     vik_aggregate_layer_draw ( vlp->toplayer, vvp );
 444 }
 445
 446 void vik_layers_panel_cut_selected ( VikLayersPanel *vlp )
 447 {
 448   gint type;
 449   GtkTreeIter iter;
 450
 451   g_return_if_fail ( vik_treeview_get_selected_iter ( vlp->vt, &iter ) );
 452
 453   type = vik_treeview_item_get_type ( vlp->vt, &iter );
 454
 455   if ( type == VIK_TREEVIEW_TYPE_LAYER )
 456   {
 457     VikAggregateLayer *parent = vik_treeview_item_get_parent ( vlp->vt, &iter );
 458     if ( parent )
 459     {
 460       a_clipboard_copy_selected ( vlp );
 461       if ( vik_aggregate_layer_delete ( parent, &iter ) )
 462         vik_layers_panel_emit_update ( vlp );
 463     }
 464     else
 465       a_dialog_info_msg ( VIK_GTK_WINDOW_FROM_WIDGET(vlp), "You cannot cut the Top Layer." );
 466   }
 467 }
 468
 469 void vik_layers_panel_copy_selected ( VikLayersPanel *vlp )
 470 {
 471   gint type;
 472   GtkTreeIter iter;
 473
 474   g_return_if_fail ( vik_treeview_get_selected_iter ( vlp->vt, &iter ) );
 475
 476   type = vik_treeview_item_get_type ( vlp->vt, &iter );
 477
 478   if ( type == VIK_TREEVIEW_TYPE_LAYER ) {
 479     a_clipboard_copy_selected ( vlp );
 480   }
 481 }
 482
 483 void vik_layers_panel_paste_selected ( VikLayersPanel *vlp )
 484 {
 485   gint type;
 486   GtkTreeIter iter;
 487   g_return_if_fail ( vik_treeview_get_selected_iter ( vlp->vt, &iter ) );
 488   a_clipboard_paste ( vlp );
 489 }
 490
 491 void vik_layers_panel_delete_selected ( VikLayersPanel *vlp )
 492 {
 493   gint type;
 494   GtkTreeIter iter;
 495
 496   g_return_if_fail ( vik_treeview_get_selected_iter ( vlp->vt, &iter ) );
 497
 498   type = vik_treeview_item_get_type ( vlp->vt, &iter );
 499
 500   if ( type == VIK_TREEVIEW_TYPE_LAYER )
 501   {
 502     VikAggregateLayer *parent = vik_treeview_item_get_parent ( vlp->vt, &iter );
 503     if ( parent )
 504     {
 505       if (IS_VIK_AGGREGATE_LAYER(parent)) {
 506         if ( vik_aggregate_layer_delete ( parent, &iter ) )
 507           vik_layers_panel_emit_update ( vlp );
 508       }
 509     }
 510     else
 511       a_dialog_info_msg ( VIK_GTK_WINDOW_FROM_WIDGET(vlp), "You cannot delete the Top Layer." );
 512   }
 513   else if (type == VIK_TREEVIEW_TYPE_SUBLAYER) {
 514     VikLayer *sel = vik_layers_panel_get_selected ( vlp );
 515     if ( vik_layer_get_interface(sel->type)->delete_item ) {
 516       gint subtype = vik_treeview_item_get_data( vlp->vt, &iter);
 517       vik_layer_get_interface(sel->type)->delete_item ( sel, subtype, vik_treeview_item_get_pointer(sel->vt, &iter) );
 518     }
 519   }
 520 }
 521
 522 VikLayer *vik_layers_panel_get_selected ( VikLayersPanel *vlp )
 523 {
 524   GtkTreeIter iter, parent;
 525   gint type;
 526
 527   if ( ! vik_treeview_get_selected_iter ( vlp->vt, &iter ) )
 528     return NULL;
 529
 530   type = vik_treeview_item_get_type ( vlp->vt, &iter );
 531
 532   while ( type != VIK_TREEVIEW_TYPE_LAYER )
 533   {
 534     if ( ! vik_treeview_item_get_parent_iter ( vlp->vt, &iter, &parent ) )
 535       return NULL;
 536     iter = parent;
 537     type = vik_treeview_item_get_type ( vlp->vt, &iter );
 538   }
 539
 540   return VIK_LAYER( vik_treeview_item_get_pointer ( vlp->vt, &iter ) );
 541 }
 542
 543 static void layers_move_item_up ( VikLayersPanel *vlp )
 544 {
 545   layers_move_item ( vlp, TRUE );
 546 }
 547
 548 static void layers_move_item_down ( VikLayersPanel *vlp )
 549 {
 550   layers_move_item ( vlp, FALSE );
 551 }
 552
 553 #if 0
 554 gboolean vik_layers_panel_tool ( VikLayersPanel *vlp, guint16 layer_type, VikToolInterfaceFunc tool_func, GdkEventButton *event, VikViewport *vvp )
 555 {
 556   VikLayer *vl = vik_layers_panel_get_selected ( vlp );
 557   if ( vl && vl->type == layer_type )
 558   {
 559     tool_func ( vl, event, vvp );
 560     return TRUE;
 561   }
 562   else if ( VIK_LAYER(vlp->toplayer)->visible &&
 563       vik_aggregate_layer_tool ( vlp->toplayer, layer_type, tool_func, event, vvp ) != 1 ) /* either accepted or rejected, but a layer was found */
 564     return TRUE;
 565   return FALSE;
 566 }
 567 #endif
 568
 569 VikLayer *vik_layers_panel_get_layer_of_type ( VikLayersPanel *vlp, gint type )
 570 {
 571   VikLayer *rv = vik_layers_panel_get_selected ( vlp );
 572   if ( rv == NULL || rv->type != type )
 573     if ( VIK_LAYER(vlp->toplayer)->visible )
 574       return vik_aggregate_layer_get_top_visible_layer_of_type ( vlp->toplayer, type );
 575     else
 576       return NULL;
 577   else
 578     return rv;
 579 }
 580
 581 VikAggregateLayer *vik_layers_panel_get_top_layer ( VikLayersPanel *vlp )
 582 {
 583   return vlp->toplayer;
 584 }
 585
 586 void vik_layers_panel_clear ( VikLayersPanel *vlp )
 587 {
 588   if ( (! vik_aggregate_layer_is_empty(vlp->toplayer)) && a_dialog_overwrite ( VIK_GTK_WINDOW_FROM_WIDGET(vlp), "Are you sure you wish to delete all layers?", NULL ) )
 589     vik_aggregate_layer_clear ( vlp->toplayer ); /* simply deletes all layers */
 590 }
 591
 592 void vik_layers_panel_change_coord_mode ( VikLayersPanel *vlp, VikCoordMode mode )
 593 {
 594   vik_layer_change_coord_mode ( VIK_LAYER(vlp->toplayer), mode );
 595 }
 596
 597 static void layers_panel_finalize ( GObject *gob )
 598 {
 599   VikLayersPanel *vlp = VIK_LAYERS_PANEL ( gob );
 600   g_object_unref ( VIK_LAYER(vlp->toplayer) );
 601   g_object_unref ( G_OBJECT(vlp->popup_factory) );
 602   G_OBJECT_CLASS(parent_class)->finalize(gob);
 603 }
 604