[tepl] FileLoader: add a mode to simulate a long file loading

[Sébastien Wilmet <swilmet src gnome org>]

commit 0df68a32df14e672a148add964530361460d06ad
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Mon May 25 10:42:05 2020 +0200

    FileLoader: add a mode to simulate a long file loading

 tepl/tepl-file-loader.c | 41 +++++++++++++++++++++++++++++++++++++----
 1 file changed, 37 insertions(+), 4 deletions(-)
---
diff --git a/tepl/tepl-file-loader.c b/tepl/tepl-file-loader.c
index 2beb2c4..055e449 100644
--- a/tepl/tepl-file-loader.c
+++ b/tepl/tepl-file-loader.c
@@ -29,6 +29,11 @@
  * gtk_text_buffer_set_modified() is called with %FALSE.
  */
 
+/* To simulate for example loading a big remote file with a slow network
+ * connection.
+ */
+#define SIMULATE_LONG_FILE_LOADING FALSE
+
 struct _TeplFileLoaderPrivate
 {
        /* Weak ref to the TeplBuffer. A strong ref could create a reference
@@ -356,6 +361,31 @@ out:
        g_free (content);
 }
 
+static void
+start_load_contents (GTask *task)
+{
+       TeplFileLoader *loader = g_task_get_source_object (task);
+
+       g_file_load_contents_async (loader->priv->location,
+                                   g_task_get_cancellable (task),
+                                   load_contents_cb,
+                                   task);
+}
+
+#if SIMULATE_LONG_FILE_LOADING
+static gboolean
+simulate_long_file_loading_timeout_cb (gpointer user_data)
+{
+       GTask *task = G_TASK (user_data);
+
+       g_message ("%s()", G_STRFUNC);
+
+       start_load_contents (task);
+
+       return G_SOURCE_REMOVE;
+}
+#endif
+
 /**
  * tepl_file_loader_load_async:
  * @loader: a #TeplFileLoader.
@@ -403,10 +433,13 @@ tepl_file_loader_load_async (TeplFileLoader      *loader,
        gtk_text_buffer_set_text (GTK_TEXT_BUFFER (loader->priv->buffer), "", -1);
        gtk_text_buffer_set_modified (GTK_TEXT_BUFFER (loader->priv->buffer), FALSE);
 
-       g_file_load_contents_async (loader->priv->location,
-                                   cancellable,
-                                   load_contents_cb,
-                                   task);
+#if SIMULATE_LONG_FILE_LOADING
+       g_timeout_add_seconds (5,
+                              simulate_long_file_loading_timeout_cb,
+                              task);
+#else
+       start_load_contents (task);
+#endif
 }
 
 /**