* add modest-signal-mgr, some small utility functions for gobject to

[modest] / src / modest-signal-mgr.c

diff --git a/src/modest-signal-mgr.c b/src/modest-signal-mgr.c
new file mode 100644 (file)
index 0000000..b5f05b3
--- /dev/null
+++ b/src/modest-signal-mgr.c
@@ -0,0 +1,71 @@
+/* Copyright (c) 2006, Nokia Corporation
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * * Neither the name of the Nokia Corporation nor the names of its
+ *   contributors may be used to endorse or promote products derived from
+ *   this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "modest-signal-mgr.h"
+
+typedef struct {
+       guint handler_id;
+       GObject *obj;
+} SignalHandler;
+
+GSList *
+modest_signal_mgr_connect (GSList *lst, GObject *instance, const gchar *detail,
+                          GCallback handler, gpointer data)
+{
+       SignalHandler *sighandler;
+       
+       g_return_val_if_fail (instance, lst);
+       g_return_val_if_fail (detail, lst);
+       g_return_val_if_fail (handler, lst);
+       
+       sighandler = g_new (SignalHandler, 1);
+       sighandler->obj        = g_object_ref (instance);
+       sighandler->handler_id = g_signal_connect (instance, detail, handler, data);
+       
+       return g_slist_prepend (lst, (gpointer)sighandler);
+}
+
+
+void
+modest_signal_mgr_disconnect_all_and_destroy (GSList *lst)
+{
+       GSList *cursor; 
+       for (cursor = lst; cursor; cursor = g_slist_next(cursor)) {
+               SignalHandler *handler;
+               handler = (SignalHandler*)cursor->data;
+               if (g_signal_handler_is_connected (handler->obj, handler->handler_id)) {
+                       //g_debug ("disconnecting %d", handler->handler_id);
+                       g_signal_handler_disconnect (handler->obj, handler->handler_id);
+               }
+               
+               g_object_unref (handler->obj);    
+               g_free (handler);
+       }
+       g_slist_free (lst);
+}