mirror of
https://github.com/Ark0N/Codeman.git
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feat: render TUI frames from the model and layout
One absolutely-addressed line per row, each closed with an erase-to-end, so nothing scrolls and a repaint cannot leave the previous frame's tail behind. The caller wraps the result in synchronized-output brackets; that is an IO decision and stays out of the renderer. Color is passed in rather than detected. chalk's detection is right for the one-shot CLI but would make a frame non-deterministic, so the palette is raw SGR in the same semantic roles cli-style uses, and `color: false` emits nothing but the cursor addressing, the session's own colors in the preview included. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Codeman maintainer
@@ -0,0 +1,631 @@
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/**
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* @fileoverview Pure frame renderer: model + layout in, one string out.
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*
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* The frame is absolute-addressed, one `ESC [ <row>;1 H` per line followed by
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* `ESC [ K`, so nothing ever scrolls and a repaint cannot leave debris. The
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* caller wraps the result in synchronized-output brackets (DECSET 2026) where
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* the terminal supports it; that is an IO decision and stays out of here.
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*
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* Color is decided by the caller and passed in, never detected here: chalk's
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* auto-detection is the right answer for the one-shot CLI (see `cli-style.ts`)
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* but it would make a frame non-deterministic, and "same inputs, same string"
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* is what makes this module testable. The palette below is the same semantic
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* vocabulary chalk gives `cli-style` (ok green, warn yellow, err red, info
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* cyan, muted gray, emph bold), written as raw SGR so the mapping is fixed.
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*
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* With `color: false` the frame contains no escape sequences at all beyond the
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* cursor addressing that puts each line in place.
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*
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* @module tui/tui-render
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*/
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import { clipStyledLine, padDisplay, stripStyles, visibleWidth } from './tui-ansi.js';
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import type { TuiLayout, TuiRect } from './tui-layout.js';
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import type { TuiGlyphTier, TuiGroup, TuiRenderModel, TuiRow, TuiSessionRow, TuiSessionState } from './tui-types.js';
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export interface TuiRenderOptions {
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/** Emit SGR color. False is NO_COLOR: cursor addressing and nothing else. */
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color: boolean;
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glyphs: TuiGlyphTier;
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/** Animation counter. The WORKING glyph cycles with it. */
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tick: number;
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/** Wall clock for elapsed times, passed in so a frame is reproducible. */
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now: number;
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}
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// ─────────────────────────────────────────────────────────────────────────────
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// Palette and glyphs
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// ─────────────────────────────────────────────────────────────────────────────
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const SGR = {
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reset: '\x1b[0m',
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bold: '\x1b[1m',
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dim: '\x1b[2m',
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inverse: '\x1b[7m',
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red: '\x1b[31m',
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green: '\x1b[32m',
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yellow: '\x1b[33m',
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magenta: '\x1b[35m',
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cyan: '\x1b[36m',
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gray: '\x1b[90m',
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} as const;
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const STATE_COLOR: Record<TuiSessionState, string> = {
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'blocked-permission': SGR.red,
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'blocked-question': SGR.red,
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waiting: SGR.yellow,
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working: SGR.green,
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idle: SGR.gray,
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recent: SGR.gray,
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};
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export interface TuiGlyphSet {
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blockedPermission: string;
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blockedQuestion: string;
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waiting: string;
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/** WORKING animates through Claude's own glyph family, a deliberate nod. */
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working: readonly string[];
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idle: string;
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recent: string;
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cursor: string;
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rule: string;
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divider: string;
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boxTopLeft: string;
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boxTopRight: string;
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boxBottomLeft: string;
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boxBottomRight: string;
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boxHorizontal: string;
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boxVertical: string;
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enter: string;
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updown: string;
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separator: string;
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ellipsis: string;
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}
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const UNICODE_GLYPHS: TuiGlyphSet = {
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blockedPermission: '⚠',
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blockedQuestion: '⚠',
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waiting: '✋',
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working: ['·', '✢', '✳', '∗', '✻', '✽'],
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idle: '○',
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recent: '✔',
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cursor: '▶',
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rule: '─',
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divider: '│',
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boxTopLeft: '┌',
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boxTopRight: '┐',
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boxBottomLeft: '└',
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boxBottomRight: '┘',
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boxHorizontal: '─',
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boxVertical: '│',
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enter: '⏎',
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updown: '↑↓',
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separator: '·',
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ellipsis: '…',
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};
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/**
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* The lowest tier, for terminals that are not known-capable. Every state token
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* is three columns wide so rows still line up, mirroring what `sc` falls back
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* to today.
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*/
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const ASCII_GLYPHS: TuiGlyphSet = {
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blockedPermission: '[!]',
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blockedQuestion: '[?]',
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waiting: '[w]',
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working: ['[*]', '[+]', '[x]', '[+]'],
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idle: '[-]',
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recent: '[v]',
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cursor: '>',
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rule: '-',
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divider: '|',
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boxTopLeft: '+',
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boxTopRight: '+',
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boxBottomLeft: '+',
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boxBottomRight: '+',
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boxHorizontal: '-',
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boxVertical: '|',
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enter: 'enter',
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updown: 'up/dn',
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separator: '-',
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ellipsis: '..',
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};
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/**
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* Glyphs for a tier. `nerd` currently renders like `unicode`: the tier exists
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* so detection has somewhere to land and a nerd-font-only set has a home,
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* without shipping glyphs nobody has reviewed on a real font.
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*/
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export function glyphsFor(tier: TuiGlyphTier): TuiGlyphSet {
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return tier === 'ascii' ? ASCII_GLYPHS : UNICODE_GLYPHS;
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}
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/**
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* Glyph tier from the environment. IO-ish by nature (it reads env), so it takes
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* the env as an argument and the app layer calls it once at startup. The
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* known-capable list is the same gate `scripts/tmux-chooser.sh` uses, plus a
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* UTF-8 locale check and an explicit override.
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*/
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export function detectGlyphTier(env: Record<string, string | undefined>): TuiGlyphTier {
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const override = env.CODEMAN_TUI_GLYPHS;
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if (override === 'ascii' || override === 'unicode' || override === 'nerd') return override;
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const term = env.TERM ?? '';
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if (term === '' || term === 'dumb') return 'ascii';
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const locale = env.LC_ALL || env.LC_CTYPE || env.LANG || '';
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if (!/utf-?8/i.test(locale)) return 'ascii';
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const termProgram = env.TERM_PROGRAM ?? '';
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if (termProgram.startsWith('iTerm') || term === 'xterm-kitty' || env.WEZTERM_PANE || env.LC_TERMINAL === 'iTerm2') {
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return 'nerd';
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}
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return 'unicode';
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}
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// ─────────────────────────────────────────────────────────────────────────────
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// Formatting helpers (pure, exported for tests and for the app layer)
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// ─────────────────────────────────────────────────────────────────────────────
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/** Compact age: `45s`, `11m`, `2h`, `3d`. Empty when the anchor is unknown. */
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export function formatElapsed(ms: number): string {
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if (!Number.isFinite(ms) || ms < 0) return '';
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const seconds = Math.floor(ms / 1000);
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if (seconds < 60) return `${seconds}s`;
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const minutes = Math.floor(seconds / 60);
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if (minutes < 60) return `${minutes}m`;
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const hours = Math.floor(minutes / 60);
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if (hours < 24) return `${hours}h`;
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return `${Math.floor(hours / 24)}d`;
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}
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function trimTrailingZero(value: string): string {
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return value.endsWith('.0') ? value.slice(0, -2) : value;
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}
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/** Compact token count: `842`, `45.2k`, `1.2M`. Empty when there is nothing to show. */
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export function formatTokens(total: number): string {
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if (!Number.isFinite(total) || total <= 0) return '';
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if (total < 1000) return String(Math.floor(total));
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if (total < 1_000_000) return `${trimTrailingZero((total / 1000).toFixed(1))}k`;
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return `${trimTrailingZero((total / 1_000_000).toFixed(1))}M`;
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}
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/**
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* What a row is called. Same rule as the web history rows, including the
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* "(no content)" placeholder the transcript reader emits, which is not a title.
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*/
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export function rowLabel(session: TuiSessionRow): string {
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if (session.name) return session.name;
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const prompt = (session.firstPrompt ?? '').trim();
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if (prompt && prompt !== '(no content)') return prompt;
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const base = (session.workingDir ?? '').split('/').filter(Boolean).pop();
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return base || session.sessionId.slice(0, 8);
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}
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/** Keep the tail of a path: the last segments identify it, the root never does. */
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function truncatePathLeft(path: string, width: number, ellipsis: string): string {
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if (width <= 0) return '';
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if (visibleWidth(path) <= width) return path;
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const keep = Math.max(0, width - visibleWidth(ellipsis));
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return ellipsis + path.slice(path.length - keep);
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}
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function tokensOf(session: TuiSessionRow): number {
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return (session.inputTokens ?? 0) + (session.outputTokens ?? 0);
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}
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// ─────────────────────────────────────────────────────────────────────────────
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// Painting
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// ─────────────────────────────────────────────────────────────────────────────
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type Painter = (text: string, code: string) => string;
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function painterFor(enabled: boolean): Painter {
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return enabled ? (text, code) => (text === '' ? text : `${code}${text}${SGR.reset}`) : (text) => text;
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}
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function stateGlyph(row: TuiRow, glyphs: TuiGlyphSet, tick: number): string {
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switch (row.state) {
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case 'blocked-permission':
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return glyphs.blockedPermission;
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case 'blocked-question':
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return glyphs.blockedQuestion;
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case 'waiting':
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return glyphs.waiting;
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case 'working': {
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const frames = glyphs.working;
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const index = ((Math.trunc(tick) % frames.length) + frames.length) % frames.length;
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return frames[index];
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}
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case 'idle':
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return glyphs.idle;
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case 'recent':
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return glyphs.recent;
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}
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}
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function centered(text: string, width: number): string {
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const pad = Math.max(0, Math.floor((width - visibleWidth(text)) / 2));
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return padDisplay(`${' '.repeat(pad)}${text}`, width);
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}
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// ─────────────────────────────────────────────────────────────────────────────
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// Rows and groups
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// ─────────────────────────────────────────────────────────────────────────────
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interface RowContext {
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width: number;
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/** 1-based position in the flattened list; only 1-9 get a jump digit. */
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index: number;
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selected: boolean;
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twoLine: boolean;
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glyphs: TuiGlyphSet;
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opts: TuiRenderOptions;
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}
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function renderRowLines(row: TuiRow, ctx: RowContext): string[] {
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// A selected row is one inverse-video block, so its parts are built unpainted:
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// an inner reset would punch a hole in the highlight.
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const inverse = ctx.selected && ctx.opts.color;
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const paint = painterFor(ctx.opts.color && !inverse);
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const { session } = row;
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const marker = ctx.selected ? padDisplay(ctx.glyphs.cursor, 2) : ' ';
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const digit = ctx.index >= 1 && ctx.index <= 9 ? `${ctx.index} ` : ' ';
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const glyph = paint(stateGlyph(row, ctx.glyphs, ctx.opts.tick), STATE_COLOR[row.state]);
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const elapsed = row.since > 0 ? formatElapsed(ctx.opts.now - row.since) : '';
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const tokens = formatTokens(tokensOf(session));
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const rightParts = [glyph, paint(elapsed, SGR.gray)];
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if (!ctx.twoLine && tokens) rightParts.push(paint(tokens, SGR.gray));
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const right = rightParts.filter((part) => part !== '').join(' ');
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const mode = session.mode && session.mode !== 'claude' ? session.mode : '';
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const nameWidth = Math.max(4, ctx.width - visibleWidth(marker + digit) - visibleWidth(right) - 1);
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const label = rowLabel(session);
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const name = mode ? `${label} ${paint(mode, SGR.magenta)}` : label;
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const first = padDisplay(`${marker}${digit}${padDisplay(name, nameWidth)} ${right}`, ctx.width);
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const lines = [first];
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if (ctx.twoLine) {
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const detail = [truncatePathLeft(session.workingDir ?? '', Math.max(0, ctx.width - 8), ctx.glyphs.ellipsis)];
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if (mode) detail.push(mode);
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if (tokens) detail.push(tokens);
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const text = detail.filter((part) => part !== '').join(` ${ctx.glyphs.separator} `);
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lines.push(padDisplay(` ${paint(text, SGR.gray)}`, ctx.width));
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}
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return inverse ? lines.map((line) => `${SGR.inverse}${line}${SGR.reset}`) : lines;
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}
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function renderGroupHeader(group: TuiGroup, width: number, glyphs: TuiGlyphSet, opts: TuiRenderOptions): string {
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const paint = painterFor(opts.color);
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const label = ` ${group.label} `;
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const fill = Math.max(0, width - visibleWidth(label));
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return padDisplay(`${paint(label, SGR.bold)}${paint(glyphs.rule.repeat(fill), SGR.gray)}`, width);
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}
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export interface TuiListEntry {
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text: string;
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/** Set on the lines that belong to a session row, so the window can chase the cursor. */
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sessionId?: string;
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}
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function buildListEntries(model: TuiRenderModel, layout: TuiLayout, opts: TuiRenderOptions): TuiListEntry[] {
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const glyphs = glyphsFor(opts.glyphs);
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const width = layout.list.width;
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const entries: TuiListEntry[] = [];
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let index = 0;
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for (const group of model.groups()) {
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if (group.rows.length === 0) continue;
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entries.push({ text: renderGroupHeader(group, width, glyphs, opts) });
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for (const row of group.rows) {
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index++;
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const ctx: RowContext = {
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width,
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index,
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selected: row.session.sessionId === model.selectedId,
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twoLine: layout.rowHeight === 2,
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glyphs,
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opts,
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};
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for (const text of renderRowLines(row, ctx)) entries.push({ text, sessionId: row.session.sessionId });
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}
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}
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return entries;
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}
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/**
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* First visible entry, scrolling the minimum needed to keep the selected row on
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* screen. Deterministic on purpose: the window is derived, never remembered, so
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* two identical models render identically.
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*/
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export function computeListWindow(
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entries: readonly TuiListEntry[],
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capacity: number,
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selectedId: string | null
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): number {
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if (capacity <= 0 || entries.length <= capacity) return 0;
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const maxStart = entries.length - capacity;
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if (!selectedId) return 0;
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const first = entries.findIndex((entry) => entry.sessionId === selectedId);
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if (first < 0) return 0;
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let last = first;
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while (last + 1 < entries.length && entries[last + 1].sessionId === selectedId) last++;
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let start = 0;
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if (last >= capacity) start = Math.min(last - capacity + 1, maxStart);
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if (first < start) start = first;
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return start;
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}
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// ─────────────────────────────────────────────────────────────────────────────
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// Preview
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// ─────────────────────────────────────────────────────────────────────────────
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function buildPreviewLines(model: TuiRenderModel, rect: TuiRect, opts: TuiRenderOptions): string[] {
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const paint = painterFor(opts.color);
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const glyphs = glyphsFor(opts.glyphs);
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const lines: string[] = [];
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const selected = model.selectedId
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? (model
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.groups()
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.flatMap((group) => group.rows)
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.find((row) => row.session.sessionId === model.selectedId) ?? null)
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: null;
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if (!selected) {
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lines.push(padDisplay(paint(' no session selected', SGR.gray), rect.width));
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} else {
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const { session } = selected;
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const parts = [session.mode ?? 'claude', session.workingDir ?? ''].filter((part) => part !== '');
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const title = ` ${rowLabel(session)} ${glyphs.separator} ${parts.join(` ${glyphs.separator} `)}`;
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lines.push(padDisplay(paint(clipStyledLine(title, rect.width), SGR.bold), rect.width));
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}
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const body = previewBody(model, selected, rect, opts);
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for (const line of body) lines.push(line);
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while (lines.length < rect.height) lines.push(' '.repeat(rect.width));
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return lines.slice(0, Math.max(0, rect.height));
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}
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function previewBody(model: TuiRenderModel, selected: TuiRow | null, rect: TuiRect, opts: TuiRenderOptions): string[] {
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const paint = painterFor(opts.color);
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const capacity = Math.max(0, rect.height - 1);
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if (capacity === 0) return [];
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const hint = (text: string): string[] => [padDisplay(paint(` ${text}`, SGR.gray), rect.width)];
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if (!selected) return [];
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if (model.connection === 'degraded' || model.connection === 'down') {
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return hint('preview unavailable while the server is down');
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}
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const preview = model.preview;
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if (!preview || preview.sessionId !== selected.session.sessionId) return hint('loading preview…');
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if (preview.error) return hint(preview.error);
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const trimmed = [...preview.lines];
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while (trimmed.length > 0 && trimmed[trimmed.length - 1].trim() === '') trimmed.pop();
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if (trimmed.length === 0) return hint('(no output yet)');
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// The tail carries the session's OWN colors, which is the point of the pane,
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// but under NO_COLOR they must go too.
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return trimmed
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.slice(-capacity)
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.map((line) => padDisplay(` ${clipStyledLine(opts.color ? line : stripStyles(line), rect.width - 1)}`, rect.width));
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}
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// ─────────────────────────────────────────────────────────────────────────────
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// Chrome
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// ─────────────────────────────────────────────────────────────────────────────
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function renderHeaderLine(model: TuiRenderModel, layout: TuiLayout, opts: TuiRenderOptions): string {
|
||||
const paint = painterFor(opts.color);
|
||||
const glyphs = glyphsFor(opts.glyphs);
|
||||
const { hostname, instance, version, planUsage } = model.header;
|
||||
const facts = [
|
||||
instance ? `${hostname ?? ''}:${instance}` : (hostname ?? ''),
|
||||
version ? `v${version}` : '',
|
||||
`${model.sessionCount} session${model.sessionCount === 1 ? '' : 's'}`,
|
||||
planUsage ?? '',
|
||||
].filter((part) => part !== '');
|
||||
|
||||
const left = ` ${paint('codeman', SGR.bold)} ${paint(facts.join(` ${glyphs.separator} `), SGR.gray)}`;
|
||||
const right = paint('? help q quit ', SGR.gray);
|
||||
const gap = layout.cols - visibleWidth(left) - visibleWidth(right);
|
||||
if (gap < 1) return padDisplay(left, layout.cols);
|
||||
return `${left}${' '.repeat(gap)}${right}`;
|
||||
}
|
||||
|
||||
function renderBannerLine(model: TuiRenderModel, layout: TuiLayout, opts: TuiRenderOptions): string {
|
||||
const paint = painterFor(opts.color);
|
||||
const glyphs = glyphsFor(opts.glyphs);
|
||||
const [text, color] =
|
||||
model.connection === 'degraded'
|
||||
? ['server not running: attach only', SGR.yellow]
|
||||
: model.connection === 'reconnecting'
|
||||
? ['reconnecting to the server…', SGR.yellow]
|
||||
: ['server unreachable', SGR.red];
|
||||
return padDisplay(paint(` ${glyphs.blockedPermission} ${text}`, color), layout.cols);
|
||||
}
|
||||
|
||||
const FOOTER_KEYS: Record<string, (glyphs: TuiGlyphSet) => string> = {
|
||||
list: (g) =>
|
||||
[
|
||||
`${g.updown} select`,
|
||||
`${g.enter} attach`,
|
||||
'1-9 jump',
|
||||
'y/n answer',
|
||||
'p prompt',
|
||||
'n new',
|
||||
'x kill',
|
||||
'/ search',
|
||||
'g digest',
|
||||
'? help',
|
||||
'q quit',
|
||||
].join(` ${g.separator} `),
|
||||
help: (g) => `esc ${g.separator} ? close`,
|
||||
'confirm-kill': (g) => `type the name ${g.separator} ${g.enter} confirm ${g.separator} esc cancel`,
|
||||
message: () => 'esc dismiss',
|
||||
prompt: (g) => `${g.enter} send ${g.separator} esc cancel`,
|
||||
search: (g) => `${g.enter} open ${g.separator} esc cancel`,
|
||||
};
|
||||
|
||||
function renderFooterLine(model: TuiRenderModel, layout: TuiLayout, opts: TuiRenderOptions): string {
|
||||
const paint = painterFor(opts.color);
|
||||
const glyphs = glyphsFor(opts.glyphs);
|
||||
const build = FOOTER_KEYS[model.mode] ?? FOOTER_KEYS.list;
|
||||
return padDisplay(paint(clipStyledLine(` ${build(glyphs)}`, layout.cols), SGR.gray), layout.cols);
|
||||
}
|
||||
|
||||
// ─────────────────────────────────────────────────────────────────────────────
|
||||
// Overlays
|
||||
// ─────────────────────────────────────────────────────────────────────────────
|
||||
|
||||
interface OverlayContent {
|
||||
title: string;
|
||||
lines: string[];
|
||||
}
|
||||
|
||||
function wrapText(text: string, width: number): string[] {
|
||||
if (width <= 0) return [];
|
||||
const out: string[] = [];
|
||||
let line = '';
|
||||
for (const word of text.split(/\s+/).filter((part) => part !== '')) {
|
||||
const candidate = line === '' ? word : `${line} ${word}`;
|
||||
if (visibleWidth(candidate) > width && line !== '') {
|
||||
out.push(line);
|
||||
line = word;
|
||||
} else {
|
||||
line = candidate;
|
||||
}
|
||||
}
|
||||
if (line !== '') out.push(line);
|
||||
return out.length > 0 ? out : [''];
|
||||
}
|
||||
|
||||
function helpLines(glyphs: TuiGlyphSet): string[] {
|
||||
const pairs: Array<[string, string]> = [
|
||||
[`${glyphs.updown} / j k`, 'select'],
|
||||
[glyphs.enter, 'attach'],
|
||||
['1-9', 'jump'],
|
||||
['y / n', 'answer the pending approval'],
|
||||
['p', 'send a prompt'],
|
||||
['n', 'new session'],
|
||||
['x', 'kill (typed confirmation)'],
|
||||
['/', 'search'],
|
||||
['g', 'away digest'],
|
||||
['r', 'resume a recent session'],
|
||||
['?', 'this help'],
|
||||
['q', 'quit'],
|
||||
];
|
||||
const keyWidth = Math.max(...pairs.map(([key]) => visibleWidth(key)));
|
||||
return pairs.map(([key, description]) => `${padDisplay(key, keyWidth)} ${description}`);
|
||||
}
|
||||
|
||||
function overlayContent(model: TuiRenderModel, opts: TuiRenderOptions, width: number): OverlayContent | null {
|
||||
const glyphs = glyphsFor(opts.glyphs);
|
||||
switch (model.mode) {
|
||||
case 'help':
|
||||
return { title: 'Keys', lines: helpLines(glyphs) };
|
||||
case 'confirm-kill': {
|
||||
if (!model.confirm) return null;
|
||||
const { name, typed } = model.confirm;
|
||||
return {
|
||||
title: 'Kill session',
|
||||
lines: [`Kill ${name}?`, '', 'Type the name to confirm:', ` ${typed}_`],
|
||||
};
|
||||
}
|
||||
case 'message':
|
||||
if (!model.message) return null;
|
||||
return {
|
||||
title: model.message.tone === 'err' ? 'Error' : model.message.tone === 'warn' ? 'Warning' : 'Notice',
|
||||
lines: wrapText(model.message.text, Math.max(8, width - 8)),
|
||||
};
|
||||
default:
|
||||
return null;
|
||||
}
|
||||
}
|
||||
|
||||
/** Paint an overlay box over the body, centered, replacing whole terminal rows. */
|
||||
function applyOverlay(lines: string[], model: TuiRenderModel, layout: TuiLayout, opts: TuiRenderOptions): void {
|
||||
const body = layout.body;
|
||||
if (body.height < 3 || body.width < 12) return;
|
||||
const content = overlayContent(model, opts, body.width);
|
||||
if (!content) return;
|
||||
|
||||
const paint = painterFor(opts.color);
|
||||
const glyphs = glyphsFor(opts.glyphs);
|
||||
const maxInner = body.width - 4;
|
||||
const visible = content.lines.slice(0, Math.max(1, body.height - 2));
|
||||
const inner = Math.min(
|
||||
maxInner,
|
||||
Math.max(visibleWidth(content.title) + 2, ...visible.map((line) => visibleWidth(line)))
|
||||
);
|
||||
const boxWidth = inner + 4;
|
||||
const boxHeight = visible.length + 2;
|
||||
const left = body.col + Math.max(0, Math.floor((body.width - boxWidth) / 2));
|
||||
const top = body.row + Math.max(0, Math.floor((body.height - boxHeight) / 2));
|
||||
|
||||
const titleText = ` ${content.title} `;
|
||||
const titleFill = Math.max(0, inner + 2 - visibleWidth(titleText));
|
||||
const boxLines = [
|
||||
`${glyphs.boxTopLeft}${titleText}${glyphs.boxHorizontal.repeat(titleFill)}${glyphs.boxTopRight}`,
|
||||
...visible.map((line) => `${glyphs.boxVertical} ${padDisplay(line, inner)} ${glyphs.boxVertical}`),
|
||||
`${glyphs.boxBottomLeft}${glyphs.boxHorizontal.repeat(inner + 2)}${glyphs.boxBottomRight}`,
|
||||
];
|
||||
|
||||
for (let i = 0; i < boxLines.length; i++) {
|
||||
const row = top + i - 1;
|
||||
if (row < 0 || row >= lines.length) continue;
|
||||
lines[row] = `${' '.repeat(left - 1)}${paint(boxLines[i], SGR.cyan)}`;
|
||||
}
|
||||
}
|
||||
|
||||
// ─────────────────────────────────────────────────────────────────────────────
|
||||
// Frame
|
||||
// ─────────────────────────────────────────────────────────────────────────────
|
||||
|
||||
function writeBody(lines: string[], model: TuiRenderModel, layout: TuiLayout, opts: TuiRenderOptions): void {
|
||||
const { list, preview, divider } = layout;
|
||||
if (list.height <= 0) return;
|
||||
const paint = painterFor(opts.color);
|
||||
const glyphs = glyphsFor(opts.glyphs);
|
||||
|
||||
const entries = buildListEntries(model, layout, opts);
|
||||
if (entries.length === 0) {
|
||||
const hint = paint('No sessions. n to start one, q to quit.', SGR.gray);
|
||||
const row = list.row + Math.floor((list.height - 1) / 2);
|
||||
lines[row - 1] = centered(hint, layout.cols);
|
||||
return;
|
||||
}
|
||||
|
||||
const start = computeListWindow(entries, list.height, model.selectedId);
|
||||
const previewLines = preview ? buildPreviewLines(model, preview, opts) : [];
|
||||
|
||||
for (let i = 0; i < list.height; i++) {
|
||||
const left = entries[start + i]?.text ?? ' '.repeat(list.width);
|
||||
if (!preview || !divider) {
|
||||
lines[list.row - 1 + i] = left;
|
||||
continue;
|
||||
}
|
||||
const right = previewLines[i] ?? ' '.repeat(preview.width);
|
||||
lines[list.row - 1 + i] = `${left}${paint(glyphs.divider, SGR.gray)}${right}`;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* The whole frame as one string: absolute cursor addressing per line, each line
|
||||
* closed with an erase-to-end so a shorter line cannot leave the previous
|
||||
* frame's tail behind.
|
||||
*/
|
||||
export function renderFrame(model: TuiRenderModel, layout: TuiLayout, opts: TuiRenderOptions): string {
|
||||
const lines: string[] = new Array<string>(layout.rows).fill('');
|
||||
lines[0] = renderHeaderLine(model, layout, opts);
|
||||
if (layout.banner) lines[layout.banner.row - 1] = renderBannerLine(model, layout, opts);
|
||||
writeBody(lines, model, layout, opts);
|
||||
if (layout.footer.height > 0) lines[layout.footer.row - 1] = renderFooterLine(model, layout, opts);
|
||||
applyOverlay(lines, model, layout, opts);
|
||||
|
||||
let frame = '';
|
||||
for (let i = 0; i < lines.length; i++) {
|
||||
frame += `\x1b[${i + 1};1H${clipStyledLine(lines[i], layout.cols)}\x1b[K`;
|
||||
}
|
||||
return frame;
|
||||
}
|
||||
Reference in New Issue
Block a user