cchb 0.9.4

A TUI tool for browsing and restoring past Claude Code session history
Documentation 
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use ratatui::style::{Color, Modifier, Style};

#[allow(dead_code)]
pub struct MarkdownStyles {
    pub heading1: Style,
    pub heading2: Style,
    pub heading3: Style,
    pub bold: Style,
    pub italic: Style,
    pub inline_code: Style,
    pub code_block: Style,
    pub code_lang_label: Style,
    pub link: Style,
    pub list_bullet: Style,
    pub table_border: Style,
    pub table_header: Style,
    pub horizontal_rule: Style,
}

#[allow(dead_code)]
pub struct Theme {
    pub session_selected: Style,
    pub session_normal: Style,
    pub session_project: Style,
    pub session_date: Style,
    pub session_branch: Style,
    pub session_preview: Style,
    pub user_label: Style,
    pub user_message: Style,
    pub user_border: Style,
    pub assistant_label: Style,
    pub assistant_message: Style,
    pub assistant_border: Style,
    pub search_input: Style,
    pub search_highlight: Style,
    pub search_highlight_current: Style,
    pub help_title: Style,
    pub help_key: Style,
    pub help_desc: Style,
    pub border_active: Style,
    pub border_inactive: Style,
    pub status_bar: Style,
    pub title: Style,
    pub text_selection: Style,
    pub markdown: MarkdownStyles,
}

impl Theme {
    pub fn default_theme() -> Self {
        Self {
            session_selected: Style::default()
                .bg(Color::DarkGray)
                .add_modifier(Modifier::BOLD),
            session_normal: Style::default(),
            session_project: Style::default().fg(Color::Cyan),
            session_date: Style::default().fg(Color::Yellow),
            session_branch: Style::default().fg(Color::Green),
            session_preview: Style::default().fg(Color::Gray),
            user_label: Style::default()
                .fg(Color::Green)
                .add_modifier(Modifier::BOLD),
            user_message: Style::default().fg(Color::White),
            user_border: Style::default().fg(Color::Green),
            assistant_label: Style::default()
                .fg(Color::Magenta)
                .add_modifier(Modifier::BOLD),
            assistant_message: Style::default().fg(Color::White),
            assistant_border: Style::default().fg(Color::Magenta),
            search_input: Style::default().fg(Color::Yellow),
            search_highlight: Style::default()
                .fg(Color::Black)
                .bg(Color::Yellow)
                .add_modifier(Modifier::BOLD),
            search_highlight_current: Style::default()
                .fg(Color::Black)
                .bg(Color::Indexed(208)) // orange — distinct from yellow
                .add_modifier(Modifier::BOLD),
            help_title: Style::default()
                .fg(Color::Cyan)
                .add_modifier(Modifier::BOLD),
            help_key: Style::default()
                .fg(Color::Yellow)
                .add_modifier(Modifier::BOLD),
            help_desc: Style::default().fg(Color::Gray),
            border_active: Style::default()
                .fg(Color::Cyan)
                .add_modifier(Modifier::BOLD),
            border_inactive: Style::default().fg(Color::Indexed(238)),
            status_bar: Style::default().fg(Color::White).bg(Color::DarkGray),
            title: Style::default()
                .fg(Color::Cyan)
                .add_modifier(Modifier::BOLD),
            text_selection: Style::default().fg(Color::White).bg(Color::Indexed(24)),
            markdown: MarkdownStyles {
                heading1: Style::default()
                    .fg(Color::Cyan)
                    .add_modifier(Modifier::BOLD),
                heading2: Style::default()
                    .fg(Color::Blue)
                    .add_modifier(Modifier::BOLD),
                heading3: Style::default()
                    .fg(Color::Green)
                    .add_modifier(Modifier::BOLD),
                bold: Style::default().add_modifier(Modifier::BOLD),
                italic: Style::default().add_modifier(Modifier::ITALIC),
                inline_code: Style::default().fg(Color::Yellow).bg(Color::Indexed(236)),
                code_block: Style::default()
                    .fg(Color::Indexed(252))
                    .bg(Color::Indexed(236)),
                code_lang_label: Style::default()
                    .fg(Color::DarkGray)
                    .add_modifier(Modifier::ITALIC),
                link: Style::default()
                    .fg(Color::Cyan)
                    .add_modifier(Modifier::UNDERLINED),
                list_bullet: Style::default().fg(Color::Yellow),
                table_border: Style::default().fg(Color::DarkGray),
                table_header: Style::default().add_modifier(Modifier::BOLD),
                horizontal_rule: Style::default().fg(Color::DarkGray),
            },
        }
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_default_theme_construction() {
        // Verify theme can be constructed without panic
        let _theme = Theme::default_theme();
    }

    #[test]
    fn test_theme_user_assistant_styles_distinct() {
        let theme = Theme::default_theme();
        assert_ne!(theme.user_label, theme.assistant_label);
        assert_ne!(theme.user_border, theme.assistant_border);
    }

    #[test]
    fn test_theme_search_highlight_styles_distinct() {
        let theme = Theme::default_theme();
        assert_ne!(theme.search_highlight, theme.search_highlight_current);
    }

    #[test]
    fn test_theme_active_inactive_border_distinct() {
        let theme = Theme::default_theme();
        assert_ne!(theme.border_active, theme.border_inactive);
    }

    #[test]
    fn test_markdown_styles_heading_levels_distinct() {
        let theme = Theme::default_theme();
        assert_ne!(theme.markdown.heading1, theme.markdown.heading2);
        assert_ne!(theme.markdown.heading2, theme.markdown.heading3);
        assert_ne!(theme.markdown.heading1, theme.markdown.heading3);
    }

    #[test]
    fn test_markdown_styles_code_distinct_from_text() {
        let theme = Theme::default_theme();
        assert_ne!(theme.markdown.inline_code, theme.markdown.bold);
        assert_ne!(theme.markdown.code_block, theme.markdown.bold);
    }
}