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//! VSCode-style activity bar — a 4-cell vertical strip on the far left
//! of the rail, with one icon per [`ActivitySection`]. Clicking an
//! icon switches `App.active_section`, which the rail layout uses to
//! pick which content pane fills the area to the right of this strip.
//!
//! Every section ships live content: Explorer (file tree), Search
//! (ripgrep), Git (branch + worktrees), Debug (DAP), Integrations
//! (installed integration chips), Sessions (open Pty tabs), Agents
//! (Claude/Codex dashboard), Cloud Agents (ECS runner), HTTP
//! (`.http` / `.curl` files), Notes (`.mnml/notes/*.md`), TODOs
//! (workspace grep for TODO/FIXME/HACK), Findings
//! (`.mnml/findings/*.md`). Plus LauncherIcon (pinned integration
//! chip) and Mount (integration-owned side panel) that individual
//! integration repos add via the marketplace flow.
use ratatui::Frame;
use ratatui::layout::Rect;
use ratatui::style::{Modifier, Style};
use ratatui::text::Line;
use ratatui::widgets::Paragraph;
use crate::app::{ActivitySection, App};
use crate::ui::theme;
/// Width of the activity bar strip in cells. 3 cells = 1 padding + 1
/// glyph + 1 padding. Was 4 (trailing spacer column) but the extra
/// cell read as a too-wide gap between the window edge and the
/// rail. Matches vscode's visual weight at this terminal-cell
/// density.
pub const ACTIVITY_BAR_WIDTH: u16 = 3;
/// Paint the activity bar into `area`. Registers a click rect per
/// icon on `app.rects.activity_bar_icons` so mouse handling can
/// resolve a click → `ActivitySection`.
pub fn draw(frame: &mut Frame, app: &mut App, area: Rect) {
if area.width == 0 || area.height == 0 {
return;
}
app.rects.activity_bar_icons.clear();
app.rects.activity_bar_gear = None;
let t = theme::cur();
let bar_bg = t.bg_darker;
let nerd = !app.config.ui.ascii_icons;
// Solid background fill so the strip is visually distinct from
// the section content area to its right.
frame.render_widget(
ratatui::widgets::Block::default().style(Style::default().bg(bar_bg)),
area,
);
// Gear icon at the BOTTOM of the activity bar (VS Code's
// customary settings position). Click pops a context menu with
// Settings / Command Palette / Cheatsheet / Themes / About.
// Painted before the section icons so it has dibs on the bottom
// row; sections that would overflow into it are clipped.
let gear_glyph = if nerd { "\u{F013}" } else { "*" }; // nf-fa-cog
if area.height >= 2 {
let gear_y = area.y + area.height - 2;
let gear_row = Rect {
x: area.x,
y: gear_y,
width: area.width,
height: 1,
};
let gear_rect = Rect {
x: area.x + 1,
y: gear_y,
width: area.width.saturating_sub(1),
height: 1,
};
frame.render_widget(
Paragraph::new(Line::from(gear_glyph)).style(
Style::default()
.fg(t.comment)
.bg(bar_bg)
.add_modifier(Modifier::DIM),
),
gear_rect,
);
app.rects.activity_bar_gear = Some(gear_row);
}
// Carve the section-icon paint area so it stops above the gear.
let icons_end_y = area.y + area.height.saturating_sub(3);
let icon_x = area.x + 1; // 1 cell of left padding
let mut y = area.y + 1; // start 1 row down for top padding
for section in ActivitySection::all() {
if y >= icons_end_y {
break;
}
let (glyph_nerd, fallback, _tooltip, _cmd) = section.meta();
let glyph = if nerd { glyph_nerd } else { fallback };
let is_active = app.active_section == *section;
// Active icon: blue fg, bold, with a left-edge accent bar.
// Inactive: dim fg, no accent.
let style = if is_active {
Style::default()
.fg(t.blue)
.bg(bar_bg)
.add_modifier(Modifier::BOLD)
} else {
Style::default()
.fg(t.comment)
.bg(bar_bg)
.add_modifier(Modifier::DIM)
};
let row = Rect {
x: area.x,
y,
width: area.width,
height: 1,
};
// Accent bar on the leftmost column when active.
if is_active && area.width >= 1 {
let accent_rect = Rect {
x: area.x,
y,
width: 1,
height: 1,
};
frame.render_widget(
Paragraph::new(Line::from("▌")).style(Style::default().fg(t.blue).bg(bar_bg)),
accent_rect,
);
}
let glyph_rect = Rect {
x: icon_x,
y,
width: area.width.saturating_sub(1),
height: 1,
};
frame.render_widget(Paragraph::new(Line::from(glyph)).style(style), glyph_rect);
// Notification badge — small orange dot or digit on the
// right edge of the icon row when an integration has set one
// via the `set-activity-badge` IPC command. Goal: surface
// queue depth / action-needed counts without taking focus.
let badge_count = section
.badge_key(app)
.map(|k| app.activity_badge_for(&k))
.unwrap_or(0);
if badge_count > 0 && area.width >= 3 {
let badge_glyph = if badge_count == 1 {
"•".to_string()
} else if badge_count <= 9 {
badge_count.to_string()
} else {
"+".to_string()
};
let badge_rect = Rect {
x: area.x + area.width.saturating_sub(2),
y,
width: 1,
height: 1,
};
frame.render_widget(
Paragraph::new(Line::from(badge_glyph)).style(
Style::default()
.fg(t.orange)
.bg(bar_bg)
.add_modifier(Modifier::BOLD),
),
badge_rect,
);
}
app.rects.activity_bar_icons.push((row, *section));
// 2 rows per icon for breathing room.
y = y.saturating_add(2);
}
// Manifest-registered Mount sections. Rendered after the
// builtins so they live in the "this workspace's tools" zone
// visually distinct from the always-on builtins.
for (idx, manifest) in app.mount_manifests.clone().iter().enumerate() {
if y >= icons_end_y {
break;
}
let section = crate::app::ActivitySection::Mount(idx as u16);
let is_active = app.active_section == section;
let glyph = if nerd {
manifest.icon.as_str()
} else {
// Fall back to the first character of the name.
manifest.name.get(..1).unwrap_or("M")
};
let color = manifest.color_for_theme(&t);
let style = if is_active {
Style::default()
.fg(color)
.bg(bar_bg)
.add_modifier(Modifier::BOLD)
} else {
Style::default()
.fg(t.comment)
.bg(bar_bg)
.add_modifier(Modifier::DIM)
};
let row = Rect {
x: area.x,
y,
width: area.width,
height: 1,
};
if is_active && area.width >= 1 {
let accent_rect = Rect {
x: area.x,
y,
width: 1,
height: 1,
};
frame.render_widget(
Paragraph::new(Line::from("▌")).style(Style::default().fg(color).bg(bar_bg)),
accent_rect,
);
}
let glyph_rect = Rect {
x: icon_x,
y,
width: area.width.saturating_sub(1),
height: 1,
};
frame.render_widget(Paragraph::new(Line::from(glyph)).style(style), glyph_rect);
// Notification badge for manifest mounts — same shape as
// for builtins above.
let badge_count = app.activity_badge_for(&manifest.id);
if badge_count > 0 && area.width >= 3 {
let badge_glyph = if badge_count == 1 {
"•".to_string()
} else if badge_count <= 9 {
badge_count.to_string()
} else {
"+".to_string()
};
let badge_rect = Rect {
x: area.x + area.width.saturating_sub(2),
y,
width: 1,
height: 1,
};
frame.render_widget(
Paragraph::new(Line::from(badge_glyph)).style(
Style::default()
.fg(t.orange)
.bg(bar_bg)
.add_modifier(Modifier::BOLD),
),
badge_rect,
);
}
app.rects.activity_bar_icons.push((row, section));
y = y.saturating_add(2);
}
// 2026-07-20 — user-pinned integration launcher icons. Each
// fires the integration chip's `command` on click (spawns a
// Pty pane), no side panel. Rendered AFTER Mount manifests so
// the visual grouping is: builtins · manifest mounts · pins.
let pinned = app.config.ui.activity_bar_pinned_integrations.clone();
for (idx, integ_id) in pinned.iter().enumerate() {
if y >= icons_end_y {
break;
}
let Some(icon) = app
.config
.ui
.integration_icons
.iter()
.find(|i| &i.id == integ_id)
else {
// Pinned id vanished from integration list — skip
// silently. The right-click menu will offer "Add" (not
// "Remove") next time since integration_is_docked
// reads the list.
continue;
};
let section = crate::app::ActivitySection::LauncherIcon(idx as u16);
let is_active = app.active_section == section;
let glyph = if nerd {
icon.glyph.as_str()
} else {
icon.fallback.as_str()
};
let color = crate::ui::theme::color_from_slot(&icon.color, &t);
let style = if is_active {
Style::default()
.fg(color)
.bg(bar_bg)
.add_modifier(Modifier::BOLD)
} else {
Style::default()
.fg(color)
.bg(bar_bg)
.add_modifier(Modifier::DIM)
};
let row = Rect {
x: area.x,
y,
width: area.width,
height: 1,
};
let glyph_rect = Rect {
x: icon_x,
y,
width: area.width.saturating_sub(1),
height: 1,
};
frame.render_widget(Paragraph::new(Line::from(glyph)).style(style), glyph_rect);
app.rects.activity_bar_icons.push((row, section));
y = y.saturating_add(2);
}
}