Merge pull request #29 from lautarodragan/taro/remember-selection

feat: remember selected path

src/app.rs

@@ -43,6 +43,7 @@ pub struct App<'a> {
     input_mode: InputMode,
     pub titles: Vec<&'a str>,
     pub active_tab: AppTab,
+    pub last_visited_path: PathBuf,
 }
 
 impl<'a> App<'a> {
@@ -55,6 +56,7 @@ impl<'a> App<'a> {
             input_mode: InputMode::Browser,
             titles: vec!["Music", "Controls"],
             active_tab: AppTab::Music,
+            last_visited_path: env::current_dir().unwrap(),
         }
     }
 
@@ -83,6 +85,7 @@ impl<'a> App<'a> {
         let join = self.selected_item();
         // if folder enter, else play song
         if join.is_dir() {
+            self.last_visited_path = join.clone();
             env::set_current_dir(join).unwrap();
             self.browser_items = StatefulList::with_items(gen_funcs::scan_and_filter_directory());
             self.browser_items.next();
@@ -95,7 +98,7 @@ impl<'a> App<'a> {
     pub fn backpedal(&mut self) {
         env::set_current_dir("../").unwrap();
         self.browser_items = StatefulList::with_items(gen_funcs::scan_and_filter_directory());
-        self.browser_items.next();
+        self.browser_items.select_by_path(&self.last_visited_path);
     }
 
     // if queue has items and nothing playing, auto play

src/helpers/stateful_list.rs

@@ -1,3 +1,4 @@
+use std::path::PathBuf;
 use tui::widgets::ListState;
 
 // TODO encapsulation
@@ -77,4 +78,26 @@ impl<T> StatefulList<T> {
     pub fn unselect(&mut self) {
         self.state.select(None);
     }
+    pub fn select(&mut self, i: usize) {
+        self.curr = i;
+        self.state.select(Some(i));
+    }
+}
+
+impl<T: ToString> StatefulList<T> {
+    pub fn find_by_path(&self, s: &PathBuf) -> usize {
+        let mut i = 0;
+
+        for n in 0 .. self.items.len() {
+            if s.ends_with(self.items[n].to_string()) {
+                i = n;
+                break;
+            }
+        }
+
+        i
+    }
+    pub fn select_by_path(&mut self, s: &PathBuf) {
+        self.select(self.find_by_path(s));
+    }
 }