1 files changed, 74 insertions, 1 deletions
diff --git a/composer/e-composer-private.c b/composer/e-composer-private.c
index 816ea10b16..cb926b93ee 100644
--- a/composer/e-composer-private.c
+++ b/composer/e-composer-private.c
@@ -414,7 +414,8 @@ e_composer_private_constructed (EMsgComposer *composer)
 
 	container = priv->gallery_scrolled_window;
 
-	gallery_path = e_shell_settings_get_string (shell_settings, "composer-gallery-path");
+	gallery_path = e_shell_settings_get_string (
+		shell_settings, "composer-gallery-path");
 	widget = e_picture_gallery_new (gallery_path);
 	gtk_container_add (GTK_CONTAINER (container), widget);
 	priv->gallery_icon_view = g_object_ref (widget);
@@ -813,3 +814,75 @@ e_composer_paste_uris (EMsgComposer *composer,
 
 	return TRUE;
 }
+
+gboolean
+e_composer_selection_is_image_uris (EMsgComposer *composer,
+                                    GtkSelectionData *selection)
+{
+	gboolean all_image_uris = TRUE;
+	gchar **uris;
+	guint ii;
+
+	g_return_val_if_fail (E_IS_MSG_COMPOSER (composer), FALSE);
+	g_return_val_if_fail (selection != NULL, FALSE);
+
+	uris = gtk_selection_data_get_uris (selection);
+
+	if (uris == NULL)
+		return FALSE;
+
+	for (ii = 0; uris[ii] != NULL; ii++) {
+		GFile *file;
+		GFileInfo *file_info;
+		GdkPixbufLoader *loader;
+		const gchar *attribute;
+		const gchar *content_type;
+		gchar *mime_type = NULL;
+
+		file = g_file_new_for_uri (uris[ii]);
+		attribute = G_FILE_ATTRIBUTE_STANDARD_FAST_CONTENT_TYPE;
+
+		/* XXX This blocks, but we're requesting the fast content
+		 *     type (which only inspects filenames), so hopefully
+		 *     it won't be noticeable.  Also, this is best effort
+		 *     so we don't really care if it fails. */
+		file_info = g_file_query_info (
+			file, attribute, G_FILE_QUERY_INFO_NONE, NULL, NULL);
+
+		if (file_info == NULL) {
+			g_object_unref (file);
+			all_image_uris = FALSE;
+			break;
+		}
+
+		content_type = g_file_info_get_attribute_string (
+			file_info, attribute);
+		mime_type = g_content_type_get_mime_type (content_type);
+
+		g_object_unref (file_info);
+		g_object_unref (file);
+
+		if (mime_type == NULL) {
+			all_image_uris = FALSE;
+			break;
+		}
+
+		/* Easy way to determine if a MIME type is a supported
+		 * image format: try creating a GdkPixbufLoader for it. */
+		loader = gdk_pixbuf_loader_new_with_mime_type (mime_type, NULL);
+
+		g_free (mime_type);
+
+		if (loader == NULL) {
+			all_image_uris = FALSE;
+			break;
+		}
+
+		gdk_pixbuf_loader_close (loader, NULL);
+		g_object_unref (loader);
+	}
+
+	g_strfreev (uris);
+
+	return all_image_uris;
+}