[gnome-photos] preview-nav-buttons: Remove unnecessary properties

[Debarshi Ray <debarshir src gnome org>]

commit d5de0806c1447d089314c084f199330db84f6acc
Author: Debarshi Ray <debarshir gnome org>
Date:   Sun Mar 15 01:01:02 2015 +0100

    preview-nav-buttons: Remove unnecessary properties
    
    The enable-next and enable-prev properties introduced in
    e8a445ee37c3ff53b82b1eb557afdbebdb8ea6b1 are not really necessary. We
    can remove a bunch of code, and paves the way for the next commit.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=746152

 src/photos-preview-nav-buttons.c |  103 +++++---------------------------------
 1 files changed, 13 insertions(+), 90 deletions(-)
---
diff --git a/src/photos-preview-nav-buttons.c b/src/photos-preview-nav-buttons.c
index 80c8f55..962b67e 100644
--- a/src/photos-preview-nav-buttons.c
+++ b/src/photos-preview-nav-buttons.c
@@ -59,8 +59,6 @@ struct _PhotosPreviewNavButtonsPrivate
 enum
 {
   PROP_0,
-  PROP_ENABLE_NEXT,
-  PROP_ENABLE_PREVIOUS,
   PROP_OVERLAY,
   PROP_PREVIEW_VIEW
 };
@@ -121,8 +119,6 @@ photos_preview_nav_buttons_update_visibility (PhotosPreviewNavButtons *self)
   PhotosPreviewNavButtonsPrivate *priv = self->priv;
   GtkTreeIter iter;
   GtkTreeIter tmp;
-  gboolean enable_next = FALSE;
-  gboolean enable_prev = FALSE;
 
   if (priv->model == NULL
       || priv->current_path == NULL
@@ -130,19 +126,27 @@ photos_preview_nav_buttons_update_visibility (PhotosPreviewNavButtons *self)
       || !priv->visible_internal
       || !gtk_tree_model_get_iter (priv->model, &iter, priv->current_path))
     {
-      enable_prev = FALSE;
-      enable_next = FALSE;
+      priv->enable_prev = FALSE;
+      priv->enable_next = FALSE;
       goto out;
     }
 
   tmp = iter;
-  enable_prev = gtk_tree_model_iter_previous (priv->model, &tmp);
+  priv->enable_prev = gtk_tree_model_iter_previous (priv->model, &tmp);
 
   tmp = iter;
-  enable_next = gtk_tree_model_iter_next (priv->model, &tmp);
+  priv->enable_next = gtk_tree_model_iter_next (priv->model, &tmp);
 
  out:
-  g_object_set (self, "enable-next", enable_next, "enable-previous", enable_prev, NULL);
+  if (priv->enable_next)
+    photos_preview_nav_buttons_fade_in_button (self, priv->next_widget);
+  else
+    photos_preview_nav_buttons_fade_out_button (self, priv->next_widget);
+
+  if (priv->enable_prev)
+    photos_preview_nav_buttons_fade_in_button (self, priv->prev_widget);
+  else
+    photos_preview_nav_buttons_fade_out_button (self, priv->prev_widget);
 }
 
 
@@ -257,30 +261,6 @@ photos_preview_nav_buttons_multi_press_stopped (PhotosPreviewNavButtons *self)
 
 
 static void
-photos_preview_nav_buttons_notify_enable_next (PhotosPreviewNavButtons *self)
-{
-  PhotosPreviewNavButtonsPrivate *priv = self->priv;
-
-  if (priv->enable_next)
-    photos_preview_nav_buttons_fade_in_button (self, priv->next_widget);
-  else
-    photos_preview_nav_buttons_fade_out_button (self, priv->next_widget);
-}
-
-
-static void
-photos_preview_nav_buttons_notify_enable_previous (PhotosPreviewNavButtons *self)
-{
-  PhotosPreviewNavButtonsPrivate *priv = self->priv;
-
-  if (priv->enable_prev)
-    photos_preview_nav_buttons_fade_in_button (self, priv->prev_widget);
-  else
-    photos_preview_nav_buttons_fade_out_button (self, priv->prev_widget);
-}
-
-
-static void
 photos_preview_nav_buttons_set_active_path (PhotosPreviewNavButtons *self)
 {
   PhotosPreviewNavButtonsPrivate *priv = self->priv;
@@ -420,29 +400,6 @@ photos_preview_nav_buttons_constructed (GObject *object)
 
 
 static void
-photos_preview_nav_buttons_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
-{
-  PhotosPreviewNavButtons *self = PHOTOS_PREVIEW_NAV_BUTTONS (object);
-  PhotosPreviewNavButtonsPrivate *priv = self->priv;
-
-  switch (prop_id)
-    {
-    case PROP_ENABLE_NEXT:
-      g_value_set_boolean (value, priv->enable_next);
-      break;
-
-    case PROP_ENABLE_PREVIOUS:
-      g_value_set_boolean (value, priv->enable_prev);
-      break;
-
-    default:
-      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
-      break;
-    }
-}
-
-
-static void
 photos_preview_nav_buttons_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec 
*pspec)
 {
   PhotosPreviewNavButtons *self = PHOTOS_PREVIEW_NAV_BUTTONS (object);
@@ -450,14 +407,6 @@ photos_preview_nav_buttons_set_property (GObject *object, guint prop_id, const G
 
   switch (prop_id)
     {
-    case PROP_ENABLE_NEXT:
-      priv->enable_next = g_value_get_boolean (value);
-      break;
-
-    case PROP_ENABLE_PREVIOUS:
-      priv->enable_prev = g_value_get_boolean (value);
-      break;
-
     case PROP_OVERLAY:
       priv->overlay = GTK_WIDGET (g_value_dup_object (value));
       break;
@@ -489,15 +438,6 @@ photos_preview_nav_buttons_init (PhotosPreviewNavButtons *self)
   priv->item_mngr = g_object_ref (state->item_mngr);
 
   priv->action = PHOTOS_PREVIEW_ACTION_NONE;
-
-  g_signal_connect (self,
-                    "notify::enable-next",
-                    G_CALLBACK (photos_preview_nav_buttons_notify_enable_next),
-                    NULL);
-  g_signal_connect (self,
-                    "notify::enable-previous",
-                    G_CALLBACK (photos_preview_nav_buttons_notify_enable_previous),
-                    NULL);
 }
 
 
@@ -509,26 +449,9 @@ photos_preview_nav_buttons_class_init (PhotosPreviewNavButtonsClass *class)
   object_class->constructed = photos_preview_nav_buttons_constructed;
   object_class->dispose = photos_preview_nav_buttons_dispose;
   object_class->finalize = photos_preview_nav_buttons_finalize;
-  object_class->get_property = photos_preview_nav_buttons_get_property;
   object_class->set_property = photos_preview_nav_buttons_set_property;
 
   g_object_class_install_property (object_class,
-                                   PROP_ENABLE_NEXT,
-                                   g_param_spec_boolean ("enable-next",
-                                                         "Enable next",
-                                                         "Allow moving to the next item",
-                                                         FALSE,
-                                                         G_PARAM_READWRITE));
-
-  g_object_class_install_property (object_class,
-                                   PROP_ENABLE_PREVIOUS,
-                                   g_param_spec_boolean ("enable-previous",
-                                                         "Enable previous",
-                                                         "Allow moving to the previous item",
-                                                         FALSE,
-                                                         G_PARAM_READWRITE));
-
-  g_object_class_install_property (object_class,
                                    PROP_OVERLAY,
                                    g_param_spec_object ("overlay",
                                                         "GtkOverlay object",