Cancel file loading when closing tab (#637) (#644)

new method _xed_tab_cancel_load is called in xed-notebook to prevent use of computer resources after closing xed or a xed tab

Author: BanceDev

xed/xed-notebook.c

@@ -902,6 +902,12 @@ static void
 remove_tab (XedTab      *tab,
             XedNotebook *nb)
 {
+    /* First cancel any loading */
+    if (xed_tab_get_state (tab) == XED_TAB_STATE_LOADING)
+    {
+        _xed_tab_cancel_load (tab);
+    }
+
     gint position;
 
     position = gtk_notebook_page_num (GTK_NOTEBOOK (nb), GTK_WIDGET (tab));

xed/xed-tab.c

@@ -1994,6 +1994,15 @@ _xed_tab_load (XedTab                  *tab,
     load (tab, encoding, line_pos);
 }
 
+void
+_xed_tab_cancel_load (XedTab *tab)
+{
+    g_return_if_fail (XED_IS_PROGRESS_INFO_BAR (tab->priv->info_bar));
+    g_return_if_fail (G_IS_CANCELLABLE (tab->priv->cancellable));
+
+    g_cancellable_cancel (tab->priv->cancellable);
+}
+
 void
 _xed_tab_load_stream (XedTab                  *tab,
                       GInputStream            *stream,

xed/xed-tab.h

@@ -129,6 +129,8 @@ void _xed_tab_load (XedTab                  *tab,
                     gint                     line_pos,
                     gboolean                 create);
 
+void _xed_tab_cancel_load (XedTab *tab);
+
 void _xed_tab_load_stream     (XedTab                  *tab,
                                GInputStream            *location,
                                const GtkSourceEncoding *encoding,