gtk2_ardour/processor_selection.h

   1 /*
   2     Copyright (C) 2000-2007 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #ifndef __ardour_gtk_processor_selection_h__
  21 #define __ardour_gtk_processor_selection_h__
  22
  23 #include "pbd/xml++.h"
  24
  25 class ProcessorSelection {
  26   public:
  27     ProcessorSelection() : node (0) {}
  28     ~ProcessorSelection() { if (node) { delete node; } }
  29
  30     void set (XMLNode* n) {
  31             if (node) {
  32                     delete node;
  33             }
  34             node = n;
  35     }
  36
  37     void add (XMLNode* newchild) {
  38             if (!node) {
  39                     node = new XMLNode ("add");
  40             }
  41             node->add_child_nocopy (*newchild);
  42     }
  43
  44     void clear () {
  45             if (node) {
  46                     delete node;
  47                     node = 0;
  48             }
  49     }
  50
  51     bool empty () const { return node == 0 || node->children().empty(); }
  52
  53     const XMLNode& get_node() const { return *node; }
  54
  55   private:
  56     XMLNode* node;
  57 };
  58
  59 #endif /* __ardour_gtk_processor_selection_h__ */