feat: implement bookmarked help popup

Signed-off-by: OJarrisonn <j.h.m.t.v.10@gmail.com>
Reviewed-by: David Tadokoro <davidbtadokoro@usp.br>
Signed-off-by: David Tadokoro <davidbtadokoro@usp.br>

src/handler/bookmarked.rs

@@ -3,6 +3,7 @@ use std::ops::ControlFlow;
 use crate::{
     app::{screens::CurrentScreen, App},
     loading_screen,
+    ui::popup::{help::HelpPopUpBuilder, PopUp},
 };
 use ratatui::{
     crossterm::event::{KeyCode, KeyEvent},
@@ -19,6 +20,10 @@ where
     B: Backend + Send + 'static,
 {
     match key.code {
+        KeyCode::Char('?') => {
+            let popup = generate_help_popup();
+            app.popup = Some(popup);
+        }
         KeyCode::Esc => {
             app.bookmarked_patchsets.patchset_index = 0;
             app.set_current_screen(CurrentScreen::MailingListSelection);
@@ -42,3 +47,17 @@ where
     }
     Ok(ControlFlow::Continue(terminal))
 }
+
+pub fn generate_help_popup() -> Box<dyn PopUp> {
+    let popup = HelpPopUpBuilder::new()
+        .title("Bookmarked Patchsets")
+        .description("This screen shows all the patchsets you have bookmarked.\nThis is quite useful to keep track of patchsets you are interested in take a look later.")
+        .keybind("ESC", "Exit")
+        .keybind("ENTER", "See details of the selected patchset")
+        .keybind("?", "Show this help screen")
+        .keybind("j/🡇", "Down")
+        .keybind("k/🡅", "Up")
+        .build();
+
+    Box::new(popup)
+}

src/ui/bookmarked.rs

@@ -64,7 +64,7 @@ pub fn mode_footer_text() -> Vec<Span<'static>> {
 
 pub fn keys_hint() -> Span<'static> {
     Span::styled(
-        "(ESC) to return | (ENTER) to select | ( j / 🡇 ) down | ( k / 🡅 ) up",
+        "(ESC) to return | (ENTER) to select | (?) help",
         Style::default().fg(Color::Red),
     )
 }