From 6283d9d0259ccb99ab5a0f8ba5beae10b74feed5 Mon Sep 17 00:00:00 2001
From: Georges Basile Stavracas Neto <georges.stavracas@gmail.com>
Date: Sun, 14 Feb 2016 12:51:32 -0200
Subject: [PATCH] application: update event colors when agenda changes

When we change a source (aka agenda) color, we have to
restart Calendar in order to see it in action.

After the work on GcalEvent, events are now able to track
the agenda's color changes, and the event widget updates
itself in response to that.

The last step was simple notifying GcalApplication when an
agenda changes, so it knows when to recreate the color schemes.
---
 src/gcal-application.c | 12 ++----------
 src/gcal-manager.c     | 21 +++++++++++++++++++++
 2 files changed, 23 insertions(+), 10 deletions(-)

diff --git a/src/gcal-application.c b/src/gcal-application.c
index ce5aa555..784503f8 100644
--- a/src/gcal-application.c
+++ b/src/gcal-application.c
@@ -169,15 +169,6 @@ process_sources (GcalApplication *application)
   g_free (new_css_data);
 }
 
-static void
-sources_added_cb (GcalApplication *application,
-                  ESource         *source,
-                  gboolean         enabled,
-                  GcalManager     *manager)
-{
-  process_sources (application);
-}
-
 static void
 gcal_application_class_init (GcalApplicationClass *klass)
 {
@@ -203,7 +194,8 @@ gcal_application_init (GcalApplication *self)
   self->colors_provider = gtk_css_provider_new ();
 
   self->manager = gcal_manager_new_with_settings (self->settings);
-  g_signal_connect_swapped (self->manager, "source-added", G_CALLBACK (sources_added_cb), self);
+  g_signal_connect_swapped (self->manager, "source-added", G_CALLBACK (process_sources), self);
+  g_signal_connect_swapped (self->manager, "source-changed", G_CALLBACK (process_sources), self);
 
   self->search_provider = gcal_shell_search_provider_new ();
   gcal_shell_search_provider_connect (self->search_provider, self->manager);
diff --git a/src/gcal-manager.c b/src/gcal-manager.c
index 2386be81..d7905298 100644
--- a/src/gcal-manager.c
+++ b/src/gcal-manager.c
@@ -103,6 +103,7 @@ enum
 {
   SOURCE_ACTIVATED,
   SOURCE_ADDED,
+  SOURCE_CHANGED,
   SOURCE_REMOVED,
   SOURCE_ENABLED,
   LOAD_COMPLETED,
@@ -117,6 +118,9 @@ static void     free_async_ops_data                       (AsyncOpsData    *data
 
 static void     free_unit_data                            (GcalManagerUnit *data);
 
+static void     source_changed                            (GcalManager     *manager,
+                                                           ESource         *source);
+
 static void     load_source                               (GcalManager     *manager,
                                                            ESource         *source);
 
@@ -280,6 +284,17 @@ gather_events (ECalDataModel         *data_model,
   return TRUE;
 }
 
+static void
+source_changed (GcalManager *manager,
+                ESource     *source)
+{
+  if (g_hash_table_lookup (manager->clients, source) != NULL &&
+      e_source_has_extension (source, E_SOURCE_EXTENSION_CALENDAR))
+    {
+      g_signal_emit (manager, signals[SOURCE_CHANGED], 0, source);
+    }
+}
+
 /**
  * load_source:
  * @manager: Manager instance
@@ -707,6 +722,11 @@ gcal_manager_class_init (GcalManagerClass *klass)
                                         NULL, NULL, NULL,
                                         G_TYPE_NONE, 2, G_TYPE_POINTER, G_TYPE_BOOLEAN);
 
+  signals[SOURCE_CHANGED] = g_signal_new ("source-changed", GCAL_TYPE_MANAGER, G_SIGNAL_RUN_LAST,
+                                          0,
+                                          NULL, NULL, NULL,
+                                          G_TYPE_NONE, 1, E_TYPE_SOURCE);
+
   signals[SOURCE_REMOVED] = g_signal_new ("source-removed", GCAL_TYPE_MANAGER, G_SIGNAL_RUN_LAST,
                                           0,
                                           NULL, NULL, NULL,
@@ -850,6 +870,7 @@ gcal_manager_constructed (GObject *object)
 
   g_signal_connect_swapped (manager->source_registry, "source-added", G_CALLBACK (load_source), object);
   g_signal_connect_swapped (manager->source_registry, "source-removed", G_CALLBACK (remove_source), object);
+  g_signal_connect_swapped (manager->source_registry, "source-changed", G_CALLBACK (source_changed), object);
 
   /* create data model */
   manager->e_data_model = e_cal_data_model_new (submit_thread_job);