From 1456cefc1c4addf182e378a51201761facb2c2d5 Mon Sep 17 00:00:00 2001
From: Justin Luque <justin.luque@gmail.com>
Date: Mon, 5 Jan 2026 20:14:28 -0500
Subject: [PATCH] feat: remember parent folder index in menu when ascending
 folders

---
 src/activities/reader/FileSelectionActivity.cpp | 13 ++++++++++++-
 src/activities/reader/FileSelectionActivity.h   |  1 +
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/src/activities/reader/FileSelectionActivity.cpp b/src/activities/reader/FileSelectionActivity.cpp
index f87cc97..72c1b0b 100644
--- a/src/activities/reader/FileSelectionActivity.cpp
+++ b/src/activities/reader/FileSelectionActivity.cpp
@@ -29,7 +29,6 @@ void FileSelectionActivity::taskTrampoline(void* param) {
 
 void FileSelectionActivity::loadFiles() {
   files.clear();
-  selectorIndex = 0;
 
   auto root = SdMan.open(basepath.c_str());
   if (!root || !root.isDirectory()) {
@@ -135,6 +134,11 @@ void FileSelectionActivity::loop() {
         basepath.replace(basepath.find_last_of('/'), std::string::npos, "");
         if (basepath.empty()) basepath = "/";
         loadFiles();
+
+        auto pos = oldPath.find_last_of('/');
+        std::string dirName = oldPath.substr(pos + 1) + "/";
+        selectorIndex = findEntry(dirName);
+
         updateRequired = true;
       } else {
         onGoHome();
@@ -194,3 +198,10 @@ void FileSelectionActivity::render() const {
 
   renderer.displayBuffer();
 }
+
+int FileSelectionActivity::findEntry(const std::string& name) const {
+  for (size_t i = 0; i < files.size(); i++)
+    if (files[i] == name) 
+      return i;
+  return 0;
+}
diff --git a/src/activities/reader/FileSelectionActivity.h b/src/activities/reader/FileSelectionActivity.h
index 88e97d0..9b28214 100644
--- a/src/activities/reader/FileSelectionActivity.h
+++ b/src/activities/reader/FileSelectionActivity.h
@@ -23,6 +23,7 @@ class FileSelectionActivity final : public Activity {
   [[noreturn]] void displayTaskLoop();
   void render() const;
   void loadFiles();
+  int findEntry(const std::string& name) const;
 
  public:
   explicit FileSelectionActivity(GfxRenderer& renderer, MappedInputManager& mappedInput,