From 159b9e409a51c629a47269482551982f3e771dd2 Mon Sep 17 00:00:00 2001
From: Ferran Basora <fcsonline@gmail.com>
Date: Sun, 20 Jun 2021 15:02:58 +0000
Subject: [PATCH] Hightlight partial typed text

---
 src/view.rs | 21 ++++++++++++++++++---
 1 file changed, 18 insertions(+), 3 deletions(-)

diff --git a/src/view.rs b/src/view.rs
index 61aacdc..e92cf95 100644
--- a/src/view.rs
+++ b/src/view.rs
@@ -92,7 +92,7 @@ impl<'a> View<'a> {
     }
   }
 
-  fn render(&self, stdout: &mut dyn Write) -> () {
+  fn render(&self, stdout: &mut dyn Write, typed_hint: &str) -> () {
     write!(stdout, "{}", cursor::Hide).unwrap();
 
     for (index, line) in self.state.lines.iter().enumerate() {
@@ -160,6 +160,18 @@ impl<'a> View<'a> {
           resetb = color::Bg(color::Reset),
           text = &text
         );
+
+        if hint.starts_with(typed_hint) {
+          print!(
+            "{goto}{background}{foregroud}{text}{resetf}{resetb}",
+            goto = cursor::Goto(final_position as u16 + 1, mat.y as u16 + 1),
+            foregroud = color::Fg(&*self.multi_foreground_color),
+            background = color::Bg(&*self.multi_background_color),
+            resetf = color::Fg(color::Reset),
+            resetb = color::Bg(color::Reset),
+            text = &typed_hint
+          );
+        }
       }
     }
 
@@ -180,7 +192,7 @@ impl<'a> View<'a> {
       .unwrap()
       .clone();
 
-    self.render(stdout);
+    self.render(stdout, &typed_hint);
 
     loop {
       match stdin.keys().next() {
@@ -207,6 +219,9 @@ impl<'a> View<'a> {
                 Key::Right => {
                   self.next();
                 }
+                Key::Backspace => {
+                  typed_hint.pop();
+                }
                 Key::Char(ch) => {
                   match ch {
                     '\n' => match self.matches.iter().enumerate().find(|&h| h.0 == self.skip) {
@@ -272,7 +287,7 @@ impl<'a> View<'a> {
         }
       }
 
-      self.render(stdout);
+      self.render(stdout, &typed_hint);
     }
 
     CaptureEvent::Exit