[libpanel] save-dialog-row: show save progress during operations

[Christian Hergert <chergert src gnome org>]

commit d721c56cc90070531a29aa44b9d2b057d16a3fa4
Author: Christian Hergert <chergert redhat com>
Date:   Tue Sep 13 15:21:09 2022 -0700

    save-dialog-row: show save progress during operations

 src/panel-save-dialog-row.c  | 23 +++++++++++++++++++++++
 src/panel-save-dialog-row.ui |  2 +-
 2 files changed, 24 insertions(+), 1 deletion(-)
---
diff --git a/src/panel-save-dialog-row.c b/src/panel-save-dialog-row.c
index 749ecba..bafc367 100644
--- a/src/panel-save-dialog-row.c
+++ b/src/panel-save-dialog-row.c
@@ -83,6 +83,23 @@ map_title_with_draft (GBinding     *binding,
   return TRUE;
 }
 
+static gboolean
+map_progress_to_visible (GBinding     *binding,
+                         const GValue *from_value,
+                         GValue       *to_value,
+                         gpointer      user_data)
+{
+  double value;
+
+  g_assert (G_IS_BINDING (binding));
+  g_assert (G_VALUE_HOLDS_DOUBLE (from_value));
+  g_assert (G_VALUE_HOLDS_BOOLEAN (to_value));
+
+  value = g_value_get_double (from_value);
+  g_value_set_boolean (to_value, value > .0);
+  return TRUE;
+}
+
 static void
 panel_save_dialog_row_set_delegate (PanelSaveDialogRow *self,
                                     PanelSaveDelegate  *delegate)
@@ -98,6 +115,12 @@ panel_save_dialog_row_set_delegate (PanelSaveDialogRow *self,
                                delegate, NULL);
   g_object_bind_property (delegate, "subtitle", self, "subtitle",
                           G_BINDING_SYNC_CREATE);
+  g_object_bind_property (delegate, "progress", self->progress, "progress",
+                          G_BINDING_SYNC_CREATE);
+  g_object_bind_property_full (delegate, "progress", self->progress, "visible",
+                               G_BINDING_SYNC_CREATE,
+                               map_progress_to_visible, NULL,
+                               NULL, NULL);
 }
 
 static void
diff --git a/src/panel-save-dialog-row.ui b/src/panel-save-dialog-row.ui
index 327db22..eb6d69f 100644
--- a/src/panel-save-dialog-row.ui
+++ b/src/panel-save-dialog-row.ui
@@ -11,7 +11,7 @@
     </child>
     <child type="suffix">
       <object class="PanelProgressIcon" id="progress">
-        <property name="progress">.66</property>
+        <property name="visible">false</property>
         <property name="valign">center</property>
         <property name="margin-start">6</property>
       </object>