* Add connection-pool.h: Inkscape::ConnectionPool, an auxilliary class to manage sigc::connections

* Finish listening to selections, make family selector work properly

(bzr r887)

1 files changed, 83 insertions, 0 deletions

diff --git a/src/connection-pool.h b/src/connection-pool.h
new file mode 100644
index 000000000..7a14f57d8
--- /dev/null
+++ b/src/connection-pool.h
@@ -0,0 +1,83 @@
+#ifndef CONNECTION_POOL_H
+#define CONNECTION_POOL_H
+
+#include <glib-object.h>
+#include <gtkmm.h>
+#include <sigc++/sigc++.h>
+
+namespace Inkscape
+{
+class ConnectionPool
+{
+  public:
+
+    enum Exception
+    {
+      NAME_EXISTS,
+      NAME_DOES_NOT_EXIST
+    };
+
+    typedef std::map<std::string, sigc::connection*> ConnectionMap;
+
+    ~ConnectionPool ()
+    {
+      for (ConnectionMap::iterator iter = map.begin (), end = map.end (); iter != end; ++iter)
+      {
+	sigc::connection* connection = (*iter).second;
+	connection->disconnect ();
+	delete connection;
+      }
+    }
+
+    void
+    add_connection (std::string name, sigc::connection* connection)
+    {
+      if (map.find (name) != map.end ()) throw NAME_EXISTS;
+      map.insert (std::make_pair (name, connection)); 
+    }
+
+    void
+    del_connection (std::string name)
+    {
+      ConnectionMap::iterator iter = map.find (name); 
+      if (iter == map.end ()) throw NAME_DOES_NOT_EXIST;
+      sigc::connection* connection = (*iter).second;
+      connection->disconnect ();
+      delete connection;
+    }
+
+
+    static Inkscape::ConnectionPool*
+    new_connection_pool (std::string name)
+    {
+       return new ConnectionPool (name); 
+    }
+
+    static void
+    del_connection_pool (Inkscape::ConnectionPool* pool)
+    {
+      delete pool;
+    }
+
+    static void
+    connect_destroy (GObject *obj, Inkscape::ConnectionPool *pool)
+    {
+      g_object_connect (obj, "swapped-signal::destroy", G_CALLBACK (del_connection_pool), pool, NULL);
+    }
+
+    operator std::string ()
+    {
+      return name;
+    }
+
+  private:
+
+    ConnectionPool (std::string name) : name (name)
+    {}
+
+    ConnectionMap map;
+    std::string   name;
+};
+}
+
+#endif