[frogr] Added check for pictures in the UI before trying to upload anything

[Mario Sanchez Prada <msanchez src gnome org>]

commit 5dfc45c874562643fb00c28ae959c07380088d65
Author: Mario Sanchez Prada <msanchez gnome org>
Date:   Thu Nov 22 18:26:51 2012 +0100

    Added check for pictures in the UI before trying to upload anything

 src/frogr-main-view.c |   18 ++++++++++++++++++
 1 files changed, 18 insertions(+), 0 deletions(-)
---
diff --git a/src/frogr-main-view.c b/src/frogr-main-view.c
index 73f4756..31c5890 100644
--- a/src/frogr-main-view.c
+++ b/src/frogr-main-view.c
@@ -1511,6 +1511,21 @@ _load_pictures_dialog (FrogrMainView *self)
 }
 
 static gboolean
+_pictures_loaded_required_check (FrogrMainView *self)
+{
+  FrogrMainViewPrivate *priv = FROGR_MAIN_VIEW_GET_PRIVATE (self);
+
+  if (!frogr_model_get_pictures (priv->model))
+    {
+      frogr_util_show_error_dialog (GTK_WINDOW (self),
+                                    _("You don't have any picture loaded yet"));
+      return FALSE;
+    }
+
+  return TRUE;
+}
+
+static gboolean
 _pictures_selected_required_check (FrogrMainView *self)
 {
   FrogrMainViewPrivate *priv = FROGR_MAIN_VIEW_GET_PRIVATE (self);
@@ -1640,6 +1655,9 @@ _upload_pictures (FrogrMainView *self)
 {
   FrogrMainViewPrivate *priv = FROGR_MAIN_VIEW_GET_PRIVATE (self);
 
+  if (!_pictures_loaded_required_check (self))
+    return;
+
   gtk_icon_view_unselect_all (GTK_ICON_VIEW (priv->icon_view));
   frogr_controller_upload_pictures (priv->controller);
 }