[nautilus] placesview: update to upstream code

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit e14c76bea5cce1cf82b1b71dccadabd0ca859cde
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Fri Dec 11 02:03:07 2015 -0200

    placesview: update to upstream code
    
    This commit updates the GtkPlacesView code
    to match upstream's one. The gains:
    - Better alignment of labels
    - Measurement of available disk space

 src/gtk/gtkplacesview.c           |   10 +++
 src/gtk/gtkplacesviewrow.c        |  143 ++++++++++++++++++++++++++++++++++++-
 src/gtk/gtkplacesviewrow.ui       |   24 +++++--
 src/gtk/gtkplacesviewrowprivate.h |    6 ++
 4 files changed, 176 insertions(+), 7 deletions(-)
---
diff --git a/src/gtk/gtkplacesview.c b/src/gtk/gtkplacesview.c
index f0d0cde..484b4fc 100644
--- a/src/gtk/gtkplacesview.c
+++ b/src/gtk/gtkplacesview.c
@@ -70,6 +70,9 @@ struct _GtkPlacesViewPrivate
   GtkWidget                     *network_placeholder;
   GtkWidget                     *network_placeholder_label;
 
+  GtkSizeGroup                  *path_size_group;
+  GtkSizeGroup                  *space_size_group;
+
   GtkEntryCompletion            *address_entry_completion;
   GtkListStore                  *completion_store;
 
@@ -404,6 +407,8 @@ gtk_places_view_finalize (GObject *object)
   g_clear_object (&priv->volume_monitor);
   g_clear_object (&priv->cancellable);
   g_clear_object (&priv->networks_fetching_cancellable);
+  g_clear_object (&priv->path_size_group);
+  g_clear_object (&priv->space_size_group);
 
   G_OBJECT_CLASS (gtk_places_view_parent_class)->finalize (object);
 }
@@ -672,6 +677,9 @@ insert_row (GtkPlacesView *view,
                     G_CALLBACK (on_eject_button_clicked),
                     row);
 
+  gtk_places_view_row_set_path_size_group (GTK_PLACES_VIEW_ROW (row), priv->path_size_group);
+  gtk_places_view_row_set_space_size_group (GTK_PLACES_VIEW_ROW (row), priv->space_size_group);
+
   gtk_container_add (GTK_CONTAINER (priv->listbox), row);
 }
 
@@ -2252,6 +2260,8 @@ gtk_places_view_init (GtkPlacesView *self)
 
   priv->volume_monitor = g_volume_monitor_get ();
   priv->open_flags = GTK_PLACES_OPEN_NORMAL;
+  priv->path_size_group = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
+  priv->space_size_group = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
 
   gtk_widget_init_template (GTK_WIDGET (self));
 }
diff --git a/src/gtk/gtkplacesviewrow.c b/src/gtk/gtkplacesviewrow.c
index 4b67b18..33a9fa8 100644
--- a/src/gtk/gtkplacesviewrow.c
+++ b/src/gtk/gtkplacesviewrow.c
@@ -28,6 +28,7 @@ struct _GtkPlacesViewRow
 {
   GtkListBoxRow  parent_instance;
 
+  GtkLabel      *available_space_label;
   GtkSpinner    *busy_spinner;
   GtkButton     *eject_button;
   GtkImage      *eject_icon;
@@ -40,6 +41,8 @@ struct _GtkPlacesViewRow
   GMount        *mount;
   GFile         *file;
 
+  GCancellable  *cancellable;
+
   gint           is_network : 1;
 };
 
@@ -60,13 +63,123 @@ enum {
 static GParamSpec *properties [LAST_PROP];
 
 static void
+measure_available_space_finished (GObject      *object,
+                                  GAsyncResult *res,
+                                  gpointer      user_data)
+{
+  GtkPlacesViewRow *row = user_data;
+  GFileInfo *info;
+  GError *error;
+  guint64 free_space;
+  guint64 total_space;
+  gchar *formatted_free_size;
+  gchar *formatted_total_size;
+  gchar *label;
+
+  error = NULL;
+
+  info = g_file_query_filesystem_info_finish (G_FILE (object),
+                                              res,
+                                              &error);
+
+  if (error)
+    {
+      if (!g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED) &&
+          !g_error_matches (error, G_IO_ERROR, G_IO_ERROR_NOT_MOUNTED))
+        {
+          g_warning ("Failed to measure available space: %s", error->message);
+        }
+
+      g_clear_error (&error);
+      goto out;
+    }
+
+  if (!g_file_info_has_attribute (info, G_FILE_ATTRIBUTE_FILESYSTEM_FREE) ||
+      !g_file_info_has_attribute (info, G_FILE_ATTRIBUTE_FILESYSTEM_SIZE))
+    {
+      g_object_unref (info);
+      goto out;
+    }
+
+  free_space = g_file_info_get_attribute_uint64 (info, G_FILE_ATTRIBUTE_FILESYSTEM_FREE);
+  total_space = g_file_info_get_attribute_uint64 (info, G_FILE_ATTRIBUTE_FILESYSTEM_SIZE);
+
+  formatted_free_size = g_format_size (free_space);
+  formatted_total_size = g_format_size (total_space);
+  /* Translators: respectively, free and total space of the drive */
+  label = g_strdup_printf (_("%s / %s available"), formatted_free_size, formatted_total_size);
+
+  gtk_label_set_label (row->available_space_label, label);
+
+  g_object_unref (info);
+  g_free (formatted_total_size);
+  g_free (formatted_free_size);
+  g_free (label);
+out:
+  g_object_unref (object);
+}
+
+static void
+measure_available_space (GtkPlacesViewRow *row)
+{
+  gboolean should_measure;
+
+  should_measure = (!row->is_network && (row->volume || row->mount || row->file));
+
+  gtk_label_set_label (row->available_space_label, "");
+  gtk_widget_set_visible (GTK_WIDGET (row->available_space_label), should_measure);
+
+  if (should_measure)
+    {
+      GFile *file = NULL;
+
+      if (row->file)
+        {
+          file = g_object_ref (row->file);
+        }
+      else if (row->mount)
+        {
+          file = g_mount_get_root (row->mount);
+        }
+      else if (row->volume)
+        {
+          GMount *mount;
+
+          mount = g_volume_get_mount (row->volume);
+
+          if (mount)
+            file = g_mount_get_root (row->mount);
+
+          g_clear_object (&mount);
+        }
+
+      if (file)
+        {
+          g_cancellable_cancel (row->cancellable);
+          g_clear_object (&row->cancellable);
+          row->cancellable = g_cancellable_new ();
+
+          g_file_query_filesystem_info_async (file,
+                                              G_FILE_ATTRIBUTE_FILESYSTEM_FREE "," 
G_FILE_ATTRIBUTE_FILESYSTEM_SIZE,
+                                              G_PRIORITY_DEFAULT,
+                                              row->cancellable,
+                                              measure_available_space_finished,
+                                              row);
+        }
+    }
+}
+
+static void
 gtk_places_view_row_finalize (GObject *object)
 {
   GtkPlacesViewRow *self = GTK_PLACES_VIEW_ROW (object);
 
+  g_cancellable_cancel (self->cancellable);
+
   g_clear_object (&self->volume);
   g_clear_object (&self->mount);
   g_clear_object (&self->file);
+  g_clear_object (&self->cancellable);
 
   G_OBJECT_CLASS (gtk_places_view_row_parent_class)->finalize (object);
 }
@@ -149,15 +262,26 @@ gtk_places_view_row_set_property (GObject      *object,
 
     case PROP_MOUNT:
       g_set_object (&self->mount, g_value_get_object (value));
-      gtk_widget_set_visible (GTK_WIDGET (self->eject_button), self->mount != NULL);
+
+      /*
+       * When we hide the eject button, no size is allocated for it. Since
+       * we want to have alignment between rows, it needs an empty space
+       * when the eject button is not available. So, call then
+       * gtk_widget_set_child_visible(), which makes the button allocate the
+       * size but it stays hidden when needed.
+       */
+      gtk_widget_set_child_visible (GTK_WIDGET (self->eject_button), self->mount != NULL);
+      measure_available_space (self);
       break;
 
     case PROP_FILE:
       g_set_object (&self->file, g_value_get_object (value));
+      measure_available_space (self);
       break;
 
     case PROP_IS_NETWORK:
       gtk_places_view_row_set_is_network (self, g_value_get_boolean (value));
+      measure_available_space (self);
       break;
 
     default:
@@ -228,6 +352,7 @@ gtk_places_view_row_class_init (GtkPlacesViewRowClass *klass)
 
   gtk_widget_class_set_template_from_resource (widget_class, "/org/gnome/nautilus/gtk/gtkplacesviewrow.ui");
 
+  gtk_widget_class_bind_template_child (widget_class, GtkPlacesViewRow, available_space_label);
   gtk_widget_class_bind_template_child (widget_class, GtkPlacesViewRow, busy_spinner);
   gtk_widget_class_bind_template_child (widget_class, GtkPlacesViewRow, eject_button);
   gtk_widget_class_bind_template_child (widget_class, GtkPlacesViewRow, eject_icon);
@@ -324,3 +449,19 @@ gtk_places_view_row_set_is_network (GtkPlacesViewRow *row,
       gtk_widget_set_tooltip_text (GTK_WIDGET (row->eject_button), is_network ? _("Disconnect") : 
_("Unmount"));
     }
 }
+
+void
+gtk_places_view_row_set_path_size_group (GtkPlacesViewRow *row,
+                                         GtkSizeGroup     *group)
+{
+  if (group)
+    gtk_size_group_add_widget (group, GTK_WIDGET (row->path_label));
+}
+
+void
+gtk_places_view_row_set_space_size_group (GtkPlacesViewRow *row,
+                                          GtkSizeGroup     *group)
+{
+  if (group)
+    gtk_size_group_add_widget (group, GTK_WIDGET (row->available_space_label));
+}
diff --git a/src/gtk/gtkplacesviewrow.ui b/src/gtk/gtkplacesviewrow.ui
index d1e923b..e68502c 100644
--- a/src/gtk/gtkplacesviewrow.ui
+++ b/src/gtk/gtkplacesviewrow.ui
@@ -39,6 +39,7 @@
                 <property name="can_focus">False</property>
                 <property name="hexpand">True</property>
                 <property name="xalign">0</property>
+                <property name="ellipsize">end</property>
               </object>
               <packing>
                 <property name="expand">False</property>
@@ -47,13 +48,24 @@
               </packing>
             </child>
             <child>
+              <object class="GtkLabel" id="available_space_label">
+                <property name="visible">False</property>
+                <property name="xalign">1</property>
+                <style>
+                  <class name="dim-label" />
+                </style>
+              </object>
+              <packing>
+                <property name="position">2</property>
+              </packing>
+            </child>
+            <child>
               <object class="GtkLabel" id="path_label">
                 <property name="visible">True</property>
                 <property name="can_focus">False</property>
                 <property name="justify">right</property>
                 <property name="ellipsize">middle</property>
-                <property name="xalign">1</property>
-                <property name="width_chars">15</property>
+                <property name="xalign">0</property>
                 <property name="max_width_chars">15</property>
                 <style>
                   <class name="dim-label"/>
@@ -62,12 +74,12 @@
               <packing>
                 <property name="expand">False</property>
                 <property name="fill">True</property>
-                <property name="position">2</property>
+                <property name="position">3</property>
               </packing>
             </child>
             <child>
               <object class="GtkButton" id="eject_button">
-                <property name="visible">False</property>
+                <property name="visible">True</property>
                 <property name="halign">end</property>
                 <property name="valign">center</property>
                 <property name="tooltip-text" translatable="yes">Unmount</property>
@@ -86,7 +98,7 @@
               <packing>
                 <property name="expand">False</property>
                 <property name="fill">True</property>
-                <property name="position">3</property>
+                <property name="position">4</property>
               </packing>
             </child>
             <child>
@@ -98,7 +110,7 @@
               <packing>
                 <property name="expand">False</property>
                 <property name="fill">True</property>
-                <property name="position">4</property>
+                <property name="position">5</property>
               </packing>
             </child>
           </object>
diff --git a/src/gtk/gtkplacesviewrowprivate.h b/src/gtk/gtkplacesviewrowprivate.h
index 59294de..a0de3fc 100644
--- a/src/gtk/gtkplacesviewrowprivate.h
+++ b/src/gtk/gtkplacesviewrowprivate.h
@@ -48,6 +48,12 @@ gboolean           gtk_places_view_row_get_is_network            (GtkPlacesViewR
 void               gtk_places_view_row_set_is_network            (GtkPlacesViewRow   *row,
                                                                   gboolean            is_network);
 
+void               gtk_places_view_row_set_path_size_group       (GtkPlacesViewRow   *row,
+                                                                  GtkSizeGroup       *group);
+
+void               gtk_places_view_row_set_space_size_group      (GtkPlacesViewRow   *row,
+                                                                  GtkSizeGroup       *group);
+
 G_END_DECLS
 
 #endif /* GTK_PLACES_VIEW_ROW_H */