[gnome-logs] Mark application as busy while loading entries

[Lars Uebernickel <larsu src gnome org>]

commit 8f5002696fc9aecfbddd087c96c5e4aa06fa04d8
Author: Lars Uebernickel <lars uebernic de>
Date:   Sun Feb 15 15:57:24 2015 +0100

    Mark application as busy while loading entries
    
    Add a property "loading" to GlJournalModel which is TRUE while it's
    fetching entries and use g_application_bind_busy_property() with it.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=744567

 src/gl-eventviewlist.c |    1 +
 src/gl-journal-model.c |   44 ++++++++++++++++++++++++++++++++++++++++++++
 src/gl-journal-model.h |    2 ++
 3 files changed, 47 insertions(+), 0 deletions(-)
---
diff --git a/src/gl-eventviewlist.c b/src/gl-eventviewlist.c
index 40ddb4c..53b6b78 100644
--- a/src/gl-eventviewlist.c
+++ b/src/gl-eventviewlist.c
@@ -592,6 +592,7 @@ gl_event_view_list_init (GlEventViewList *view)
     categories = GL_CATEGORY_LIST (priv->categories);
 
     priv->journal_model = gl_journal_model_new ();
+    g_application_bind_busy_property (g_application_get_default (), priv->journal_model, "loading");
 
     gtk_list_box_bind_model (GTK_LIST_BOX (priv->entries_box),
                              G_LIST_MODEL (priv->journal_model),
diff --git a/src/gl-journal-model.c b/src/gl-journal-model.c
index dec5f05..bebaa07 100644
--- a/src/gl-journal-model.c
+++ b/src/gl-journal-model.c
@@ -21,6 +21,7 @@ enum
 {
     PROP_0,
     PROP_MATCHES,
+    PROP_LOADING,
     N_PROPERTIES
 };
 
@@ -46,6 +47,7 @@ gl_journal_model_fetch_entries (gpointer user_data)
         else
         {
             model->idle_source = 0;
+            g_object_notify_by_pspec (G_OBJECT (model), properties[PROP_LOADING]);
             return G_SOURCE_REMOVE;
         }
     }
@@ -63,6 +65,25 @@ gl_journal_model_init (GlJournalModel *model)
 }
 
 static void
+gl_journal_model_get_property (GObject    *object,
+                               guint       property_id,
+                               GValue     *value,
+                               GParamSpec *pspec)
+{
+    GlJournalModel *model = GL_JOURNAL_MODEL (object);
+
+    switch (property_id)
+    {
+    case PROP_LOADING:
+        g_value_set_boolean (value, gl_journal_model_get_loading (model));
+        break;
+
+    default:
+        g_assert_not_reached ();
+    }
+}
+
+static void
 gl_journal_model_set_property (GObject      *object,
                                guint         property_id,
                                const GValue *value,
@@ -88,6 +109,7 @@ gl_journal_model_stop_idle (GlJournalModel *model)
     {
         g_source_remove (model->idle_source);
         model->idle_source = 0;
+        g_object_notify_by_pspec (G_OBJECT (model), properties[PROP_LOADING]);
     }
 }
 
@@ -142,11 +164,15 @@ gl_journal_model_class_init (GlJournalModelClass *class)
     GParamFlags default_flags = G_PARAM_STATIC_STRINGS | G_PARAM_EXPLICIT_NOTIFY;
 
     object_class->dispose = gl_journal_model_dispose;
+    object_class->get_property = gl_journal_model_get_property;
     object_class->set_property = gl_journal_model_set_property;
 
     properties[PROP_MATCHES] = g_param_spec_boxed ("matches", "", "", G_TYPE_STRV,
                                                    G_PARAM_WRITABLE | default_flags);
 
+    properties[PROP_LOADING] = g_param_spec_boolean ("loading", "", "", TRUE,
+                                                     G_PARAM_READABLE | default_flags);
+
     g_object_class_install_properties (object_class, N_PROPERTIES, properties);
 }
 
@@ -189,4 +215,22 @@ gl_journal_model_set_matches (GlJournalModel      *model,
     gl_journal_set_matches (model->journal, matches);
 
     model->idle_source = g_idle_add_full (G_PRIORITY_LOW, gl_journal_model_fetch_entries, model, NULL);
+    g_object_notify_by_pspec (G_OBJECT (model), properties[PROP_LOADING]);
+}
+
+/**
+ * gl_journal_model_get_loading:
+ * @model: a #GlJournalModel
+ *
+ * Returns %TRUE if @model is currently loading entries from the
+ * journal. That means that @model will grow in the near future.
+ *
+ * Returns: %TRUE if the model is loading entries from the journal
+ */
+gboolean
+gl_journal_model_get_loading (GlJournalModel *model)
+{
+    g_return_val_if_fail (GL_IS_JOURNAL_MODEL (model), FALSE);
+
+    return model->idle_source > 0;
 }
diff --git a/src/gl-journal-model.h b/src/gl-journal-model.h
index 18b9bb8..dbe8c5d 100644
--- a/src/gl-journal-model.h
+++ b/src/gl-journal-model.h
@@ -12,4 +12,6 @@ GlJournalModel *        gl_journal_model_new                            (void);
 void                    gl_journal_model_set_matches                    (GlJournalModel      *model,
                                                                          const gchar * const *matches);
 
+gboolean                gl_journal_model_get_loading                    (GlJournalModel *model);
+
 #endif