add location menuitem

1 files changed, 433 insertions, 0 deletions

diff --git a/src/idolocationmenuitem.c b/src/idolocationmenuitem.c
new file mode 100644
index 0000000..1752e64
--- /dev/null
+++ b/src/idolocationmenuitem.c
@@ -0,0 +1,433 @@
+/**
+ * Copyright 2013 Canonical Ltd.
+ *
+ * Authors:
+ *   Charles Kerr <charles.kerr@canonical.com>
+ *
+ * This program is free software: you can redistribute it and/or modify it 
+ * under the terms of the GNU General Public License version 3, as published 
+ * by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but 
+ * WITHOUT ANY WARRANTY; without even the implied warranties of 
+ * MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR 
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along 
+ * with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifdef HAVE_CONFIG_H
+ #include "config.h"
+#endif
+
+#include <string.h> /* strstr() */
+
+#include <gtk/gtk.h>
+
+#include "idoactionhelper.h"
+#include "idolocationmenuitem.h"
+
+enum
+{
+  PROP_0,
+  PROP_NAME,
+  PROP_TIMEZONE,
+  PROP_FORMAT,
+  PROP_LAST
+};
+
+static GParamSpec *properties[PROP_LAST];
+
+struct _IdoLocationMenuItemPrivate
+{
+  char * name;
+  char * timezone;
+  char * format;
+
+  guint timestamp_timer;
+
+  GtkWidget * name_label;
+  GtkWidget * timestamp_label;
+};
+
+typedef IdoLocationMenuItemPrivate priv_t;
+
+G_DEFINE_TYPE (IdoLocationMenuItem, ido_location_menu_item, GTK_TYPE_MENU_ITEM);
+
+/***
+****  Timestamp Label
+***/
+
+static void
+update_timestamp_label (IdoLocationMenuItem * self)
+{
+  priv_t * p = self->priv;
+
+  if (p->format && *p->format)
+    {
+      GTimeZone * tz;
+      GDateTime * now;
+      char * str;
+
+      tz = g_time_zone_new (p->timezone);
+      if (tz == NULL)
+        tz = g_time_zone_new_local ();
+      now = g_date_time_new_now (tz);
+      str = g_date_time_format (now, p->format);
+
+      gtk_label_set_text (GTK_LABEL(p->timestamp_label), str);
+
+      g_free (str);
+      g_date_time_unref (now);
+      g_time_zone_unref (tz);
+    }
+  else
+    {
+      gtk_label_set_text (GTK_LABEL(p->timestamp_label), "");
+    }
+}
+
+static void
+stop_timestamp_timer (IdoLocationMenuItem * self)
+{
+  priv_t * p = self->priv;
+
+  if (p->timestamp_timer != 0)
+    {
+      g_source_remove (p->timestamp_timer);
+      p->timestamp_timer = 0;
+    }
+}
+
+static void start_timestamp_timer (IdoLocationMenuItem * self);
+
+static gboolean
+on_timestamp_timer (gpointer gself)
+{
+  IdoLocationMenuItem * self = IDO_LOCATION_MENU_ITEM (gself);
+
+  update_timestamp_label (self);
+
+  start_timestamp_timer (self);
+  return G_SOURCE_REMOVE;
+}
+
+static guint
+calculate_seconds_until_next_minute (void)
+{
+  guint seconds;
+  GTimeSpan diff;
+  GDateTime * now;
+  GDateTime * next;
+  GDateTime * start_of_next;
+
+  now = g_date_time_new_now_local ();
+  next = g_date_time_add_minutes (now, 1);
+  start_of_next = g_date_time_new_local (g_date_time_get_year (next),
+                                         g_date_time_get_month (next),
+                                         g_date_time_get_day_of_month (next),
+                                         g_date_time_get_hour (next),
+                                         g_date_time_get_minute (next),
+                                         1);
+
+  diff = g_date_time_difference (start_of_next, now);
+  seconds = (diff + (G_TIME_SPAN_SECOND - 1)) / G_TIME_SPAN_SECOND;
+
+  /* cleanup */
+  g_date_time_unref (start_of_next);
+  g_date_time_unref (next);
+  g_date_time_unref (now);
+
+  g_message ("%s %s the next minute will be here in %u seconds", G_STRLOC, G_STRFUNC, seconds);
+  return seconds;
+}
+
+static void
+start_timestamp_timer (IdoLocationMenuItem * self)
+{
+  int interval_sec;
+  gboolean timestamp_shows_seconds;
+  priv_t * p = self->priv;
+  const char * const fmt = p->format;
+
+  stop_timestamp_timer (self);
+
+  timestamp_shows_seconds = fmt && (strstr(fmt,"%s") ||
+                                    strstr(fmt,"%S") ||
+                                    strstr(fmt,"%T"));
+
+  if (timestamp_shows_seconds)
+    interval_sec = 1;
+  else
+    interval_sec = calculate_seconds_until_next_minute();
+
+  p->timestamp_timer = g_timeout_add_seconds (interval_sec,
+                                              on_timestamp_timer,
+                                              self);
+}
+
+/***
+****  GObject Virtual Functions
+***/
+
+static void
+my_get_property (GObject     * o,
+                 guint         property_id,
+                 GValue      * value,
+                 GParamSpec  * pspec)
+{
+  IdoLocationMenuItem * self = IDO_LOCATION_MENU_ITEM (o);
+  priv_t * p = self->priv;
+
+  switch (property_id)
+    {
+      case PROP_NAME:
+        g_value_set_string (value, p->name);
+        break;
+
+      case PROP_TIMEZONE:
+        g_value_set_string (value, p->timezone);
+        break;
+
+      case PROP_FORMAT:
+        g_value_set_string (value, p->format);
+        break;
+
+      default:
+        G_OBJECT_WARN_INVALID_PROPERTY_ID (o, property_id, pspec);
+        break;
+    }
+}
+
+static void
+my_set_property (GObject       * o,
+                 guint           property_id,
+                 const GValue  * value,
+                 GParamSpec    * pspec)
+{
+  IdoLocationMenuItem * self = IDO_LOCATION_MENU_ITEM (o);
+
+  switch (property_id)
+    {
+      case PROP_NAME:
+        ido_location_menu_item_set_name (self, g_value_get_string (value));
+        break;
+
+      case PROP_TIMEZONE:
+        ido_location_menu_item_set_timezone (self, g_value_get_string (value));
+        break;
+
+      case PROP_FORMAT:
+        ido_location_menu_item_set_format (self, g_value_get_string (value));
+        break;
+
+      default:
+        G_OBJECT_WARN_INVALID_PROPERTY_ID (o, property_id, pspec);
+        break;
+    }
+}
+
+static void
+my_dispose (GObject * object)
+{
+  stop_timestamp_timer (IDO_LOCATION_MENU_ITEM (object));
+
+  G_OBJECT_CLASS (ido_location_menu_item_parent_class)->dispose (object);
+}
+
+static void
+my_finalize (GObject * object)
+{
+  IdoLocationMenuItem * self = IDO_LOCATION_MENU_ITEM (object);
+  priv_t * p = self->priv;
+
+  g_free (p->format);
+  g_free (p->name);
+  g_free (p->timezone);
+
+  G_OBJECT_CLASS (ido_location_menu_item_parent_class)->finalize (object);
+}
+
+/***
+****  Instantiation
+***/
+
+static void
+ido_location_menu_item_class_init (IdoLocationMenuItemClass *klass)
+{
+  GParamFlags prop_flags;
+  GObjectClass * gobject_class = G_OBJECT_CLASS (klass);
+
+  g_type_class_add_private (klass, sizeof (IdoLocationMenuItemPrivate));
+
+  gobject_class->get_property = my_get_property;
+  gobject_class->set_property = my_set_property;
+  gobject_class->dispose = my_dispose;
+  gobject_class->finalize = my_finalize;
+
+  prop_flags = G_PARAM_CONSTRUCT
+             | G_PARAM_READWRITE
+             | G_PARAM_STATIC_STRINGS;
+
+  properties[PROP_NAME] = g_param_spec_string (
+    "name",
+    "The location's name",
+    "The name to display; eg, 'Oklahoma City'",
+    "Location",
+    prop_flags);
+
+  properties[PROP_TIMEZONE] = g_param_spec_string (
+    "timezone",
+    "timezone identifier",
+    "string used to identify a timezone; eg, 'America/Chicago'",
+    NULL,
+    prop_flags);
+
+  properties[PROP_FORMAT] = g_param_spec_string (
+    "format",
+    "strftime format",
+    "strftime-style format string for the timestamp",
+    "%T",
+    prop_flags);
+
+  g_object_class_install_properties (gobject_class, PROP_LAST, properties);
+}
+
+static void
+ido_location_menu_item_init (IdoLocationMenuItem *self)
+{
+  priv_t * p;
+  GtkBox * box;
+  GtkWidget * w;
+
+  self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
+                                            IDO_LOCATION_MENU_ITEM_TYPE,
+                                            IdoLocationMenuItemPrivate);
+
+  p = self->priv;
+
+  p->name_label = gtk_label_new (NULL);
+  p->timestamp_label = gtk_label_new (NULL);
+
+  w = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 3);
+  gtk_misc_set_alignment (GTK_MISC(p->timestamp_label), 1.0, 0.5);
+  box = GTK_BOX (w);
+  gtk_box_pack_start (box, p->name_label, FALSE, FALSE, 3);
+  gtk_box_pack_end (box, p->timestamp_label, FALSE, FALSE, 5);
+
+  gtk_widget_show_all (w);
+  gtk_container_add (GTK_CONTAINER (self), w);
+}
+
+
+/***
+****  Public API
+***/
+
+GtkWidget *
+ido_location_menu_item_new (void)
+{
+  return GTK_WIDGET (g_object_new (IDO_LOCATION_MENU_ITEM_TYPE, NULL));
+}
+
+/**
+ * @name: human-readable name, such as a city (eg: "Oklahoma City")
+ */
+void
+ido_location_menu_item_set_name (IdoLocationMenuItem * self,
+                                 const char          * name)
+{
+  priv_t * p;
+
+  g_return_if_fail (IDO_IS_LOCATION_MENU_ITEM (self));
+  p = self->priv;
+
+  g_free (p->name);
+  p->name = g_strdup (name);
+  gtk_label_set_text (GTK_LABEL(p->name_label), p->name);
+}
+
+/**
+ * @timezone: timezone identifier (eg: "America/Chicago")
+ */
+void
+ido_location_menu_item_set_timezone (IdoLocationMenuItem   * self,
+                                     const char            * timezone)
+{
+  priv_t * p;
+
+  g_return_if_fail (IDO_IS_LOCATION_MENU_ITEM (self));
+  p = self->priv;
+
+  g_free (p->timezone);
+  p->timezone = g_strdup (timezone);
+  update_timestamp_label (self);
+}
+
+/**
+ * @strftime_fmt: the format string used to build the location's time string
+ */
+void
+ido_location_menu_item_set_format (IdoLocationMenuItem   * self,
+                                   const char            * strftime_fmt)
+{
+  priv_t * p;
+
+  g_return_if_fail (IDO_IS_LOCATION_MENU_ITEM (self));
+  p = self->priv;
+
+  g_free (p->format);
+  p->format = g_strdup (strftime_fmt);
+  update_timestamp_label (self);
+  start_timestamp_timer (self);
+}
+
+GtkMenuItem *
+ido_location_menu_item_new_from_model (GMenuItem    * menu_item,
+                                       GActionGroup * actions)
+{
+  gchar * str;
+  IdoLocationMenuItem * ido_location;
+
+  ido_location = IDO_LOCATION_MENU_ITEM (ido_location_menu_item_new ());
+
+  if (g_menu_item_get_attribute (menu_item, "label", "s", &str))
+    {
+      ido_location_menu_item_set_name (ido_location, str);
+      g_free (str);
+    }
+
+  if (g_menu_item_get_attribute (menu_item, "x-canonical-timezone", "s", &str))
+    {
+      ido_location_menu_item_set_timezone (ido_location, str);
+      g_free (str);
+    }
+
+  if (g_menu_item_get_attribute (menu_item, "x-canonical-time-format", "s", &str))
+    {
+      ido_location_menu_item_set_format (ido_location, str);
+      g_free (str);
+    }
+
+  if (g_menu_item_get_attribute (menu_item, "action", "s", &str))
+    {
+      GVariant * target;
+      IdoActionHelper * helper;
+
+      target = g_menu_item_get_attribute_value (menu_item, "target",
+                                                G_VARIANT_TYPE_ANY);
+      helper = ido_action_helper_new (GTK_WIDGET(ido_location), actions,
+                                      str, target);
+      g_signal_connect_swapped (ido_location, "activate",
+                                G_CALLBACK (ido_action_helper_activate), helper);
+      g_signal_connect_swapped (ido_location, "destroy",
+                                G_CALLBACK (g_object_unref), helper);
+
+      if (target)
+        g_variant_unref (target);
+      g_free (str);
+    }
+
+  return GTK_MENU_ITEM (ido_location);
+}