use syntactic sugar

[ardour.git] / gtk2_ardour / visibility_group.cc

diff --git a/gtk2_ardour/visibility_group.cc b/gtk2_ardour/visibility_group.cc
index 82621283b67fdc63e64b7517b896ae45a8be19a9..d0ef1dd63510a0c36b9253a4421ab724410b2d06 100644 (file)
--- a/gtk2_ardour/visibility_group.cc
+++ b/gtk2_ardour/visibility_group.cc
@@ -21,10 +21,13 @@
 #include <gtkmm/menu.h>
 #include <gtkmm/menushell.h>
 #include <gtkmm/treeview.h>
+
+#include "pbd/strsplit.h"
 #include "pbd/xml++.h"
+
 #include "visibility_group.h"
 
-#include "i18n.h"
+#include "pbd/i18n.h"
 
 using namespace std;
 
@@ -54,7 +57,7 @@ VisibilityGroup::add (Gtk::Widget* widget, string const & id, string const & nam
        m.name = name;
        m.visible = visible;
        m.override = override;
-       
+
        _members.push_back (m);
 }
 
@@ -161,12 +164,58 @@ VisibilityGroup::set_state (string v)
                }
 
                v = v.substr (comma + 1);
-               
+
        } while (1);
 
        update ();
 }
 
+string
+VisibilityGroup::remove_element (std::string const& from, std::string const& element)
+{
+       std::vector<string> s;
+       std::string ret;
+
+       split (from, s, ',');
+       for (std::vector<string>::const_iterator i = s.begin(); i != s.end(); ++i) {
+               if ((*i) == element) {
+                       continue;
+               }
+               if (!ret.empty()) {
+                       ret += ',';
+               }
+               ret += *i;
+       }
+
+       return ret;
+}
+
+string
+VisibilityGroup::add_element (std::string const& from, std::string const& element)
+{
+       std::vector<string> s;
+       std::string ret;
+       
+       split (from, s, ',');
+
+       for (std::vector<string>::const_iterator i = s.begin(); i != s.end(); ++i) {
+               if ((*i) == element) {
+                       /* already present, just return the original */
+                       return from;
+               }
+       }
+
+       ret = from;
+
+       if (!ret.empty()) {
+               ret += ',';
+       }
+
+       ret += element;
+
+       return ret;
+}
+
 string
 VisibilityGroup::get_state_name () const
 {
@@ -195,11 +244,11 @@ VisibilityGroup::update_list_view ()
        if (!_model) {
                return;
        }
-       
+
        _ignore_list_view_change = true;
 
        _model->clear ();
-       
+
        for (vector<Member>::iterator i = _members.begin(); i != _members.end(); ++i) {
                Gtk::TreeModel::iterator j = _model->append ();
                Gtk::TreeModel::Row row = *j;
@@ -235,7 +284,7 @@ VisibilityGroup::list_view_visible_changed (string const & path)
        if (_ignore_list_view_change) {
                return;
        }
-       
+
        Gtk::TreeModel::iterator i = _model->get_iter (path);
        if (!i) {
                return;