root_menu.c fix recent regression for shortcuts add resume for plugins

recent changes broke shortcuts when they originated from the root menu

I mistakenly thought GO_TO_ROOT only happened at start and otherwise was
GO_TO_PREVIOUS

this commit also adds a few missing features for Start In Previous
to resume the last plugin running at shutdown

Additionally GO_TO_ROOT now overwrites the global last_screen so you can
return to the main menu on next startup

Change-Id: I86bf842616e25dc3d4f684ff9d476e6a5ba96b04

1 files changed, 9 insertions, 0 deletions

diff --git a/apps/open_plugin.c b/apps/open_plugin.c
index d16502ecbe..f7f55d58cd 100644
--- a/apps/open_plugin.c
+++ b/apps/open_plugin.c
@@ -374,6 +374,15 @@ int open_plugin_run(const char *key)
 void open_plugin_cache_flush(void)
 {
     logf("OP *cache flush*");
+    /* start_in_screen == 0 is 'Previous Screen' it is actually
+     *  defined as (GO_TO_PREVIOUS = -2) + 2 for *Legacy?* reasons AFAICT */
+    if (global_settings.start_in_screen == 0 &&
+        global_status.last_screen == GO_TO_PLUGIN &&
+        open_plugin_entry.lang_id > OPEN_PLUGIN_LANG_INVALID)
+    {
+        /* flush the last item as LANG_PREVIOUS_SCREEN if the user wants to resume */
+        open_plugin_entry.lang_id = LANG_PREVIOUS_SCREEN;
+    }
     op_update_dat(&open_plugin_entry, true);
 }