Make help modal scrollable for small resolutions
- Add Up/Down arrow key handling in help modal - Display scrollbar when content exceeds viewport - Update title to indicate scrollability - Fixes content cutoff on small terminal windows
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@ -6,6 +6,7 @@ use ratatui::{
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Frame,
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layout::{Alignment, Constraint, Direction, Layout, Rect},
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style::{Color, Modifier, Style},
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text::Line,
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widgets::{Block, Borders, Clear, Paragraph, Wrap},
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};
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@ -22,6 +23,7 @@ pub struct ModalManager {
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pub journal_scroll_offset: usize,
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pub thread_scroll_max: usize,
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pub journal_scroll_max: usize,
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pub help_scroll_offset: usize,
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}
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impl ModalManager {
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@ -33,6 +35,7 @@ impl ModalManager {
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journal_scroll_offset: 0,
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thread_scroll_max: 0,
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journal_scroll_max: 0,
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help_scroll_offset: 0,
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}
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}
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pub fn is_active(&self) -> bool {
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@ -56,7 +59,11 @@ impl ModalManager {
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ModalButton::Ok
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}
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Some(ModalType::About) => ModalButton::Ok,
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Some(ModalType::Help) => ModalButton::Ok,
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Some(ModalType::Help) => {
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// Reset scroll state for help modal
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self.help_scroll_offset = 0;
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ModalButton::Ok
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}
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Some(ModalType::Confirmation { .. }) => ModalButton::Confirm,
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Some(ModalType::Info { .. }) => ModalButton::Ok,
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None => ModalButton::Ok,
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@ -196,6 +203,22 @@ impl ModalManager {
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ModalAction::None
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}
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}
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KeyCode::Up => {
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if matches!(self.stack.last(), Some(ModalType::Help)) {
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self.help_scroll_offset = self.help_scroll_offset.saturating_sub(1);
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ModalAction::Handled
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} else {
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ModalAction::None
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}
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}
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KeyCode::Down => {
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if matches!(self.stack.last(), Some(ModalType::Help)) {
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self.help_scroll_offset = self.help_scroll_offset.saturating_add(1);
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ModalAction::Handled
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} else {
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ModalAction::None
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}
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}
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_ => ModalAction::None,
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}
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}
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@ -472,72 +495,107 @@ impl ModalManager {
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}
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fn render_help(&self, f: &mut Frame, area: Rect) {
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let help_text = "\
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GLOBAL
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q/Q/Esc ........ Quit │ a/A ....... About │ h/H ....... Help
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let help_lines = vec![
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"GLOBAL",
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" q/Q/Esc ........ Quit │ a/A ....... About │ h/H ....... Help",
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"",
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"PROCESS LIST",
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" / .............. Start/edit fuzzy search",
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" c/C ............ Clear search filter",
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" ↑/↓ ............ Select/navigate processes",
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" Enter .......... Open Process Details",
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" x/X ............ Clear selection",
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" Click header ... Sort by column (CPU/Mem)",
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" Click row ...... Select process",
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"",
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"SEARCH MODE (after pressing /)",
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" Type ........... Enter search query (fuzzy match)",
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" ↑/↓ ............ Navigate results while typing",
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" Esc ............ Cancel search and clear filter",
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" Enter .......... Apply filter and select first result",
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"",
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"CPU PER-CORE",
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" ←/→ ............ Scroll cores │ PgUp/PgDn ... Page up/down",
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" Home/End ....... Jump to first/last core",
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"",
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"PROCESS DETAILS MODAL",
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" x/X ............ Close modal (all parent modals)",
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" p/P ............ Navigate to parent process",
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" j/k ............ Scroll threads ↓/↑ (1 line)",
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" d/u ............ Scroll threads ↓/↑ (10 lines)",
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" [ / ] .......... Scroll journal ↑/↓",
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" Esc/Enter ...... Close modal",
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"",
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"MODAL NAVIGATION",
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" Tab/→ .......... Next button │ Shift+Tab/← ... Previous button",
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" Enter .......... Confirm/OK │ Esc ............ Cancel/Close",
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];
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PROCESS LIST
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/ .............. Start/edit fuzzy search
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c/C ............ Clear search filter
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↑/↓ ............ Select/navigate processes
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Enter .......... Open Process Details
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x/X ............ Clear selection
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Click header ... Sort by column (CPU/Mem)
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Click row ...... Select process
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SEARCH MODE (after pressing /)
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Type ........... Enter search query (fuzzy match)
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↑/↓ ............ Navigate results while typing
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Esc ............ Cancel search and clear filter
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Enter .......... Apply filter and select first result
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CPU PER-CORE
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←/→ ............ Scroll cores │ PgUp/PgDn ... Page up/down
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Home/End ....... Jump to first/last core
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PROCESS DETAILS MODAL
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x/X ............ Close modal (all parent modals)
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p/P ............ Navigate to parent process
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j/k ............ Scroll threads ↓/↑ (1 line)
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d/u ............ Scroll threads ↓/↑ (10 lines)
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[ / ] .......... Scroll journal ↑/↓
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Esc/Enter ...... Close modal
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MODAL NAVIGATION
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Tab/→ .......... Next button │ Shift+Tab/← ... Previous button
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Enter .......... Confirm/OK │ Esc ............ Cancel/Close";
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// Render the border block
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let block = Block::default()
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.title(" Hotkey Help ")
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.title(" Hotkey Help (use ↑/↓ to scroll) ")
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.borders(Borders::ALL)
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.style(Style::default().bg(Color::Black).fg(Color::DarkGray));
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f.render_widget(block, area);
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// Calculate inner area manually to avoid any parent styling
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let inner_area = Rect {
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// Split into content area and button area
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let chunks = Layout::default()
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.direction(Direction::Vertical)
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.constraints([Constraint::Min(1), Constraint::Length(1)])
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.split(Rect {
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x: area.x + 1,
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y: area.y + 1,
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width: area.width.saturating_sub(2),
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height: area.height.saturating_sub(2), // Leave room for button at bottom
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};
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height: area.height.saturating_sub(2),
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});
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// Render content area with explicit black background
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let content_area = chunks[0];
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let button_area = chunks[1];
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// Calculate visible window
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let visible_height = content_area.height as usize;
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let total_lines = help_lines.len();
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let max_scroll = total_lines.saturating_sub(visible_height);
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let scroll_offset = self.help_scroll_offset.min(max_scroll);
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// Get visible lines
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let visible_lines: Vec<Line> = help_lines
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.iter()
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.skip(scroll_offset)
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.take(visible_height)
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.map(|s| Line::from(*s))
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.collect();
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// Render scrollable content
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f.render_widget(
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Paragraph::new(help_text)
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Paragraph::new(visible_lines)
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.style(Style::default().fg(Color::Cyan).bg(Color::Black))
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.alignment(Alignment::Left)
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.wrap(Wrap { trim: false }),
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inner_area,
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.alignment(Alignment::Left),
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content_area,
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);
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// Button area
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let button_area = Rect {
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x: area.x + 1,
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y: area.y + area.height.saturating_sub(2),
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width: area.width.saturating_sub(2),
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height: 1,
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// Render scrollbar if needed
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if total_lines > visible_height {
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use ratatui::widgets::{Scrollbar, ScrollbarOrientation, ScrollbarState};
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let scrollbar_area = Rect {
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x: area.x + area.width.saturating_sub(2),
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y: area.y + 1,
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width: 1,
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height: area.height.saturating_sub(2),
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};
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let mut scrollbar_state = ScrollbarState::new(max_scroll).position(scroll_offset);
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let scrollbar = Scrollbar::new(ScrollbarOrientation::VerticalRight)
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.begin_symbol(Some("↑"))
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.end_symbol(Some("↓"))
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.style(Style::default().fg(Color::DarkGray));
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f.render_stateful_widget(scrollbar, scrollbar_area, &mut scrollbar_state);
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}
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// Button area
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let ok_style = if self.active_button == ModalButton::Ok {
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Style::default()
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.bg(Color::Blue)
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