libsysprof-ui: wire up can-save propagation

src/libsysprof-ui/sysprof-display.c

@@ -52,6 +52,7 @@ G_DEFINE_TYPE_WITH_PRIVATE (SysprofDisplay, sysprof_display, GTK_TYPE_BIN)
 
 enum {
   PROP_0,
+  PROP_CAN_SAVE,
   PROP_RECORDING,
   PROP_TITLE,
   N_PROPS
@@ -124,6 +125,7 @@ sysprof_display_profiler_stopped_cb (SysprofDisplay  *self,
     }
 
 notify:
+  g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_CAN_SAVE]);
   g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_RECORDING]);
   g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_TITLE]);
 }
@@ -274,6 +276,10 @@ sysprof_display_get_property (GObject    *object,
 
   switch (prop_id)
     {
+    case PROP_CAN_SAVE:
+      g_value_set_boolean (value, sysprof_display_get_can_save (self));
+      break;
+
     case PROP_RECORDING:
       g_value_set_boolean (value, sysprof_display_get_is_recording (self));
       break;
@@ -312,6 +318,13 @@ sysprof_display_class_init (SysprofDisplayClass *klass)
 
   widget_class->parent_set = sysprof_display_parent_set;
 
+  properties [PROP_CAN_SAVE] =
+    g_param_spec_boolean ("can-save",
+                          "Can Save",
+                          "If the display can save a recording",
+                          FALSE,
+                          (G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+
   properties [PROP_RECORDING] =
     g_param_spec_boolean ("recording",
                           "Recording",
@@ -536,3 +549,13 @@ sysprof_display_save (SysprofDisplay *self)
 
   gtk_native_dialog_destroy (GTK_NATIVE_DIALOG (native));
 }
+
+gboolean
+sysprof_display_get_can_save (SysprofDisplay *self)
+{
+  SysprofDisplayPrivate *priv = sysprof_display_get_instance_private (self);
+
+  g_return_val_if_fail (SYSPROF_IS_DISPLAY (self), FALSE);
+
+  return sysprof_capture_view_get_reader (priv->capture_view) != NULL;
+}

src/libsysprof-ui/sysprof-display.h

@@ -53,5 +53,7 @@ void             sysprof_display_open         (SysprofDisplay *self,
                                                GFile          *file);
 SYSPROF_AVAILABLE_IN_ALL
 void             sysprof_display_save         (SysprofDisplay *self);
+SYSPROF_AVAILABLE_IN_ALL
+gboolean         sysprof_display_get_can_save (SysprofDisplay *self);
 
 G_END_DECLS