forked from wrenn/wrenn
Add terminal tab to capsule detail page and fix envd process lookup bugs
- Add multi-session Terminal tab with xterm.js (session tabs, close, reconnect) - Keep terminal mounted across tab switches to preserve sessions - Persist active tab in URL (?tab=terminal) so refresh stays on terminal - Buffer keystrokes (50ms) to reduce per-character RPC overhead - Add WebSocket auth via ?token= query param for browser WS connections - Enable ws:true in Vite dev proxy for WebSocket support envd fixes (pre-existing bugs exposed by multi-session terminals): - Fix getProcess tag Range: inverted return values caused early stop when multiple tagged processes existed, making SendInput fail with "not found" - Fix multiplexer deadlock: blocking send to cancelled fork's unbuffered channel prevented process cleanup. Now uses buffered channels (cap 64) with non-blocking fallback
This commit is contained in:
548
frontend/src/lib/components/TerminalTab.svelte
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548
frontend/src/lib/components/TerminalTab.svelte
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@ -0,0 +1,548 @@
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<script lang="ts">
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import { onDestroy, tick } from 'svelte';
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import { auth } from '$lib/auth.svelte';
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type Props = {
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sandboxId: string;
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isRunning: boolean;
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visible?: boolean;
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};
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let { sandboxId, isRunning, visible = true }: Props = $props();
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type ConnectionState = 'idle' | 'connecting' | 'connected' | 'disconnected' | 'error';
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type SessionDisplay = {
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id: number;
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state: ConnectionState;
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errorMessage: string | null;
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ptyTag: string | null;
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ptyPid: number | null;
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};
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type SessionInternal = {
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// eslint-disable-next-line @typescript-eslint/no-explicit-any
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term: any;
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// eslint-disable-next-line @typescript-eslint/no-explicit-any
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fitAddon: any;
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ws: WebSocket | null;
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resizeObserver: ResizeObserver | null;
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fitDebounce: ReturnType<typeof setTimeout> | null;
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};
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let sessions = $state<SessionDisplay[]>([]);
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const internals = new Map<number, SessionInternal>();
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let activeSessionId = $state<number | null>(null);
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let nextId = 0;
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let cssLoaded = false;
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let containerRef = $state<HTMLDivElement | undefined>(undefined);
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let hasAutoCreated = false;
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// eslint-disable-next-line @typescript-eslint/no-explicit-any
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let TerminalClass: any = null;
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// eslint-disable-next-line @typescript-eslint/no-explicit-any
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let FitAddonClass: any = null;
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// eslint-disable-next-line @typescript-eslint/no-explicit-any
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let WebLinksAddonClass: any = null;
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const activeSession = $derived(sessions.find(s => s.id === activeSessionId) ?? null);
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const TERM_THEME = {
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background: '#0a0c0b',
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foreground: '#d0cdc6',
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cursor: '#5e8c58',
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cursorAccent: '#0a0c0b',
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selectionBackground: 'rgba(94, 140, 88, 0.25)',
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selectionForeground: '#eae7e2',
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selectionInactiveBackground: 'rgba(94, 140, 88, 0.12)',
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black: '#1a1e1c',
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red: '#cf8172',
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green: '#5e8c58',
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yellow: '#d4a73c',
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blue: '#5a9fd4',
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magenta: '#b07ab8',
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cyan: '#5aafb0',
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white: '#d0cdc6',
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brightBlack: '#454340',
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brightRed: '#e09585',
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brightGreen: '#89a785',
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brightYellow: '#e0c070',
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brightBlue: '#7ab8e0',
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brightMagenta: '#c898cf',
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brightCyan: '#7ac5c6',
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brightWhite: '#eae7e2',
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};
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function getWsUrl(): string {
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const proto = window.location.protocol === 'https:' ? 'wss:' : 'ws:';
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const token = auth.token ? `?token=${encodeURIComponent(auth.token)}` : '';
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return `${proto}//${window.location.host}/api/v1/sandboxes/${sandboxId}/pty${token}`;
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}
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function updateSession(id: number, updates: Partial<SessionDisplay>) {
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const idx = sessions.findIndex(s => s.id === id);
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if (idx === -1) return;
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Object.assign(sessions[idx], updates);
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}
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async function loadModules() {
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if (TerminalClass) return;
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const [{ Terminal }, { FitAddon }, { WebLinksAddon }] = await Promise.all([
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import('@xterm/xterm'),
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import('@xterm/addon-fit'),
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import('@xterm/addon-web-links')
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]);
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TerminalClass = Terminal;
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FitAddonClass = FitAddon;
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WebLinksAddonClass = WebLinksAddon;
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if (!cssLoaded) {
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await import('@xterm/xterm/css/xterm.css');
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cssLoaded = true;
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}
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}
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// Create first session when the tab becomes visible for the first time
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$effect(() => {
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if (visible && isRunning && !hasAutoCreated && containerRef) {
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hasAutoCreated = true;
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createSession();
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}
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});
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// Re-fit active terminal when tab becomes visible (after being hidden)
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$effect(() => {
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if (visible && activeSessionId !== null) {
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const int = internals.get(activeSessionId);
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if (int?.fitAddon && int.term) {
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requestAnimationFrame(() => {
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int.fitAddon.fit();
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int.term.focus();
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});
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}
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}
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});
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async function createSession() {
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if (!isRunning || !containerRef) return;
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await loadModules();
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const id = nextId++;
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sessions = [...sessions, {
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id,
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state: 'connecting',
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errorMessage: null,
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ptyTag: null,
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ptyPid: null,
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}];
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activeSessionId = id;
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await tick();
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const el = containerRef?.querySelector(`[data-session-id="${id}"]`) as HTMLDivElement | null;
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if (!el) return;
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const fitAddon = new FitAddonClass();
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const term = new TerminalClass({
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cursorBlink: true,
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cursorStyle: 'bar',
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cursorInactiveStyle: 'outline',
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fontFamily: "'JetBrains Mono Variable', 'JetBrains Mono', monospace",
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fontSize: 13,
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lineHeight: 1.4,
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letterSpacing: 0,
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theme: TERM_THEME,
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allowProposedApi: true,
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scrollback: 5000,
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convertEol: true,
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});
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term.loadAddon(fitAddon);
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term.loadAddon(new WebLinksAddonClass());
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term.open(el);
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const internal: SessionInternal = {
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term,
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fitAddon,
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ws: null,
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resizeObserver: null,
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fitDebounce: null,
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};
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internals.set(id, internal);
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requestAnimationFrame(() => fitAddon.fit());
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internal.resizeObserver = new ResizeObserver(() => {
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if (internal.fitDebounce) clearTimeout(internal.fitDebounce);
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internal.fitDebounce = setTimeout(() => {
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if (internal.fitAddon && internal.term && activeSessionId === id) {
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internal.fitAddon.fit();
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}
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}, 50);
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});
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internal.resizeObserver.observe(el);
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// Register input/resize handlers ONCE per terminal (not per connection).
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// Buffer keystrokes and flush every 100ms to reduce request volume.
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// 100ms is imperceptible but coalesces paste
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// operations and fast typing into single messages.
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let inputBuffer = '';
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let inputFlushTimer: ReturnType<typeof setTimeout> | null = null;
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function flushInput() {
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inputFlushTimer = null;
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if (!inputBuffer) return;
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const i = internals.get(id);
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if (i?.ws?.readyState === WebSocket.OPEN) {
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i.ws.send(JSON.stringify({ type: 'input', data: btoa(inputBuffer) }));
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}
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inputBuffer = '';
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}
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term.onData((data: string) => {
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inputBuffer += data;
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if (!inputFlushTimer) {
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inputFlushTimer = setTimeout(flushInput, 100);
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}
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});
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term.onResize(({ cols, rows }: { cols: number; rows: number }) => {
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const i = internals.get(id);
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if (i?.ws?.readyState === WebSocket.OPEN) {
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i.ws.send(JSON.stringify({ type: 'resize', cols, rows }));
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}
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});
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connectSession(id);
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}
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function connectSession(id: number, reconnectTag?: string) {
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const int = internals.get(id);
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if (!int) return;
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const display = sessions.find(s => s.id === id);
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const tag = reconnectTag ?? display?.ptyTag;
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const ws = new WebSocket(getWsUrl());
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int.ws = ws;
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updateSession(id, { state: 'connecting', errorMessage: null });
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ws.onopen = () => {
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const { cols, rows } = int.term;
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const msg: Record<string, unknown> = {
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type: tag ? 'connect' : 'start',
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cols,
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rows,
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};
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if (tag) {
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msg.tag = tag;
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} else {
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msg.cmd = '/bin/bash';
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msg.envs = { TERM: 'xterm-256color' };
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}
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ws.send(JSON.stringify(msg));
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};
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ws.onmessage = (event) => {
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try {
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const msg = JSON.parse(event.data);
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switch (msg.type) {
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case 'started':
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updateSession(id, {
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state: 'connected',
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ptyTag: msg.tag,
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ptyPid: msg.pid ?? null,
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});
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if (activeSessionId === id) int.term.focus();
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break;
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case 'output':
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if (msg.data) int.term.write(atob(msg.data));
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break;
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case 'exit':
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closeSession(id);
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break;
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case 'error':
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if (msg.fatal) {
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updateSession(id, { state: 'error', errorMessage: msg.data || 'Connection error' });
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int.term.write(`\r\n\x1b[38;2;207;129;114m${msg.data}\x1b[0m\r\n`);
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}
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break;
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case 'ping':
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ws.send(JSON.stringify({ type: 'pong' }));
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break;
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}
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} catch {
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// Ignore malformed messages
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}
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};
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ws.onclose = () => {
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const s = sessions.find(s => s.id === id);
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if (s?.state === 'connected') {
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updateSession(id, { state: 'disconnected' });
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}
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};
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ws.onerror = () => {
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updateSession(id, { state: 'error', errorMessage: 'Connection lost — check that the capsule is running' });
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};
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}
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function switchTo(id: number) {
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activeSessionId = id;
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requestAnimationFrame(() => {
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const int = internals.get(id);
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if (int?.fitAddon && int.term) {
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int.fitAddon.fit();
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int.term.focus();
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}
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});
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}
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function closeSession(id: number) {
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const idx = sessions.findIndex(s => s.id === id);
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if (idx === -1) return;
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const int = internals.get(id);
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if (int) {
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if (int.fitDebounce) clearTimeout(int.fitDebounce);
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int.resizeObserver?.disconnect();
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if (int.ws?.readyState === WebSocket.OPEN) {
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int.ws.send(JSON.stringify({ type: 'kill' }));
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}
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int.ws?.close();
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int.term?.dispose();
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internals.delete(id);
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}
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sessions = sessions.filter(s => s.id !== id);
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if (activeSessionId === id) {
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if (sessions.length === 0) {
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activeSessionId = null;
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} else {
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const newIdx = Math.min(idx, sessions.length - 1);
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switchTo(sessions[newIdx].id);
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}
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}
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}
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function reconnectSession(id: number) {
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const int = internals.get(id);
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const display = sessions.find(s => s.id === id);
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if (!int || !display) return;
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int.ws?.close();
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connectSession(id, display.ptyTag ?? undefined);
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}
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function statusDot(state: ConnectionState): string {
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switch (state) {
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case 'connected': return 'bg-[var(--color-accent)]';
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case 'connecting': return 'bg-[var(--color-text-tertiary)] animate-pulse';
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case 'error': return 'bg-[var(--color-red)]';
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default: return 'bg-[var(--color-text-muted)]';
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}
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}
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onDestroy(() => {
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for (const [, int] of internals) {
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if (int.fitDebounce) clearTimeout(int.fitDebounce);
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int.resizeObserver?.disconnect();
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int.ws?.close();
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int.term?.dispose();
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}
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internals.clear();
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});
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</script>
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<style>
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.terminal-container :global(.xterm) {
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padding: 12px 4px 12px 16px;
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height: 100%;
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}
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.terminal-container :global(.xterm-viewport) {
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scrollbar-width: thin;
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scrollbar-color: rgba(94, 140, 88, 0.18) transparent;
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}
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.terminal-container :global(.xterm-viewport::-webkit-scrollbar) {
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width: 6px;
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}
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.terminal-container :global(.xterm-viewport::-webkit-scrollbar-track) {
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background: transparent;
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}
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.terminal-container :global(.xterm-viewport::-webkit-scrollbar-thumb) {
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background: rgba(94, 140, 88, 0.18);
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border-radius: 3px;
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}
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.terminal-container :global(.xterm-viewport::-webkit-scrollbar-thumb:hover) {
|
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background: rgba(94, 140, 88, 0.32);
|
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}
|
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.tab-scroll {
|
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scrollbar-width: none;
|
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}
|
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.tab-scroll::-webkit-scrollbar {
|
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display: none;
|
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}
|
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</style>
|
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|
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<div class="flex flex-1 flex-col min-h-0">
|
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{#if !isRunning}
|
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<div class="flex flex-1 items-center justify-center">
|
||||
<div class="flex flex-col items-center gap-4 text-center">
|
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<div class="flex h-14 w-14 items-center justify-center rounded-[var(--radius-card)] border border-[var(--color-border-mid)] bg-[var(--color-bg-2)]" style="animation: iconFloat 3s ease-in-out infinite">
|
||||
<svg class="text-[var(--color-text-muted)]" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true">
|
||||
<polyline points="4 17 10 11 4 5" /><line x1="12" y1="19" x2="20" y2="19" />
|
||||
</svg>
|
||||
</div>
|
||||
<div class="flex flex-col gap-1">
|
||||
<span class="text-ui font-medium text-[var(--color-text-secondary)]">Terminal unavailable</span>
|
||||
<span class="text-meta text-[var(--color-text-muted)]">Start the capsule to connect</span>
|
||||
</div>
|
||||
</div>
|
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</div>
|
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{:else}
|
||||
<!-- Session tab bar -->
|
||||
<div class="flex items-center border-b border-[var(--color-border)] bg-[var(--color-bg-1)]">
|
||||
<div class="tab-scroll flex flex-1 items-center overflow-x-auto">
|
||||
{#each sessions as session (session.id)}
|
||||
<!-- svelte-ignore a11y_no_static_element_interactions -->
|
||||
<div
|
||||
onclick={() => switchTo(session.id)}
|
||||
onkeydown={(e) => { if (e.key === 'Enter' || e.key === ' ') switchTo(session.id); }}
|
||||
role="tab"
|
||||
tabindex="0"
|
||||
aria-selected={session.id === activeSessionId}
|
||||
class="group relative flex shrink-0 cursor-pointer items-center gap-2 border-r border-[var(--color-border)] px-3.5 py-2 text-label transition-colors
|
||||
{session.id === activeSessionId
|
||||
? 'bg-[var(--color-bg-0)] text-[var(--color-text-primary)]'
|
||||
: 'bg-[var(--color-bg-1)] text-[var(--color-text-tertiary)] hover:bg-[var(--color-bg-2)] hover:text-[var(--color-text-secondary)]'}"
|
||||
>
|
||||
{#if session.id === activeSessionId}
|
||||
<span class="absolute inset-x-0 bottom-0 h-px bg-[var(--color-accent)]"></span>
|
||||
{/if}
|
||||
|
||||
<span class="h-[6px] w-[6px] shrink-0 rounded-full {statusDot(session.state)}"></span>
|
||||
|
||||
<span class="font-mono">
|
||||
bash
|
||||
{#if session.ptyPid}
|
||||
<span class="text-[var(--color-text-muted)]">:{session.ptyPid}</span>
|
||||
{/if}
|
||||
</span>
|
||||
|
||||
<button
|
||||
onclick={(e) => { e.stopPropagation(); closeSession(session.id); }}
|
||||
class="ml-0.5 flex h-4 w-4 items-center justify-center rounded-[2px] text-[var(--color-text-muted)] opacity-0 transition-all group-hover:opacity-100 hover:bg-[var(--color-bg-4)] hover:text-[var(--color-text-secondary)]"
|
||||
title="Close session"
|
||||
>
|
||||
<svg width="10" height="10" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round">
|
||||
<line x1="18" y1="6" x2="6" y2="18" /><line x1="6" y1="6" x2="18" y2="18" />
|
||||
</svg>
|
||||
</button>
|
||||
</div>
|
||||
{/each}
|
||||
</div>
|
||||
|
||||
<button
|
||||
onclick={createSession}
|
||||
class="flex shrink-0 items-center gap-1.5 px-3 py-2 text-label font-medium text-[var(--color-text-muted)] transition-colors hover:bg-[var(--color-bg-2)] hover:text-[var(--color-text-secondary)]"
|
||||
title="New terminal session"
|
||||
>
|
||||
<svg width="13" height="13" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
|
||||
<line x1="12" y1="5" x2="12" y2="19" /><line x1="5" y1="12" x2="19" y2="12" />
|
||||
</svg>
|
||||
</button>
|
||||
</div>
|
||||
|
||||
<!-- Status bar for active session -->
|
||||
{#if activeSession}
|
||||
<div class="flex items-center justify-between border-b border-[var(--color-border)] bg-[var(--color-bg-1)] px-4 py-1.5">
|
||||
<div class="flex items-center gap-2.5">
|
||||
{#if activeSession.state === 'connected'}
|
||||
<span class="flex items-center gap-1.5 rounded-[3px] border border-[var(--color-accent)]/25 bg-[var(--color-accent-glow-mid)] px-2 py-0.5 text-badge font-semibold uppercase tracking-[0.05em] text-[var(--color-accent-mid)]">
|
||||
<span class="relative flex h-[5px] w-[5px] shrink-0">
|
||||
<span class="animate-status-ping absolute inline-flex h-full w-full rounded-full bg-[var(--color-accent)]"></span>
|
||||
<span class="relative inline-flex h-[5px] w-[5px] rounded-full bg-[var(--color-accent)]"></span>
|
||||
</span>
|
||||
Live
|
||||
</span>
|
||||
{:else if activeSession.state === 'connecting'}
|
||||
<span class="flex items-center gap-1.5 rounded-[3px] border border-[var(--color-border)] bg-[var(--color-bg-2)] px-2 py-0.5 text-badge font-semibold uppercase tracking-[0.05em] text-[var(--color-text-tertiary)]">
|
||||
<svg class="animate-spin" width="10" height="10" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5"><path d="M21 12a9 9 0 1 1-6.219-8.56" /></svg>
|
||||
Connecting
|
||||
</span>
|
||||
{:else if activeSession.state === 'error'}
|
||||
<span class="flex items-center gap-1.5 rounded-[3px] border border-[var(--color-red)]/25 bg-[var(--color-red)]/8 px-2 py-0.5 text-badge font-semibold uppercase tracking-[0.05em] text-[var(--color-red)]">
|
||||
Error
|
||||
</span>
|
||||
{#if activeSession.errorMessage}
|
||||
<span class="text-meta text-[var(--color-red)]/80">{activeSession.errorMessage}</span>
|
||||
{/if}
|
||||
{:else if activeSession.state === 'disconnected'}
|
||||
<span class="flex items-center gap-1.5 rounded-[3px] border border-[var(--color-border)] bg-[var(--color-bg-2)] px-2 py-0.5 text-badge font-semibold uppercase tracking-[0.05em] text-[var(--color-text-muted)]">
|
||||
Disconnected
|
||||
</span>
|
||||
{/if}
|
||||
|
||||
{#if activeSession.ptyTag}
|
||||
<span class="h-3 w-px bg-[var(--color-border)]"></span>
|
||||
<span class="font-mono text-badge text-[var(--color-text-muted)]">{activeSession.ptyTag}</span>
|
||||
{/if}
|
||||
</div>
|
||||
|
||||
<div class="flex items-center gap-2">
|
||||
{#if activeSession.state === 'disconnected' || activeSession.state === 'error'}
|
||||
{#if activeSession.ptyTag}
|
||||
<button
|
||||
onclick={() => activeSession && reconnectSession(activeSession.id)}
|
||||
class="flex items-center gap-1.5 rounded-[var(--radius-button)] border border-[var(--color-border)] bg-[var(--color-bg-3)] px-2.5 py-1 text-badge font-semibold uppercase tracking-[0.05em] text-[var(--color-text-secondary)] transition-colors hover:bg-[var(--color-bg-4)] hover:text-[var(--color-text-primary)]"
|
||||
>
|
||||
<svg width="11" height="11" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
|
||||
<polyline points="1 4 1 10 7 10" /><polyline points="23 20 23 14 17 14" />
|
||||
<path d="M20.49 9A9 9 0 0 0 5.64 5.64L1 10m22 4l-4.64 4.36A9 9 0 0 1 3.51 15" />
|
||||
</svg>
|
||||
Reconnect
|
||||
</button>
|
||||
{/if}
|
||||
{/if}
|
||||
</div>
|
||||
</div>
|
||||
{/if}
|
||||
|
||||
<!-- Terminal surfaces -->
|
||||
<div class="relative flex-1 min-h-0" bind:this={containerRef}>
|
||||
{#each sessions as session (session.id)}
|
||||
<div
|
||||
data-session-id={session.id}
|
||||
class="terminal-container absolute inset-0 bg-[var(--color-bg-0)]"
|
||||
style:display={session.id === activeSessionId ? 'block' : 'none'}
|
||||
></div>
|
||||
{/each}
|
||||
|
||||
{#if sessions.length === 0}
|
||||
<div class="flex h-full items-center justify-center">
|
||||
<div class="flex flex-col items-center gap-4 text-center">
|
||||
<div class="flex h-14 w-14 items-center justify-center rounded-[var(--radius-card)] border border-[var(--color-border-mid)] bg-[var(--color-bg-2)]" style="animation: iconFloat 3s ease-in-out infinite">
|
||||
<svg class="text-[var(--color-text-muted)]" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true">
|
||||
<polyline points="4 17 10 11 4 5" /><line x1="12" y1="19" x2="20" y2="19" />
|
||||
</svg>
|
||||
</div>
|
||||
<div class="flex flex-col gap-1">
|
||||
<span class="text-ui font-medium text-[var(--color-text-secondary)]">No active sessions</span>
|
||||
<span class="text-meta text-[var(--color-text-muted)]">All terminal sessions have been closed</span>
|
||||
</div>
|
||||
<button
|
||||
onclick={createSession}
|
||||
class="mt-1 flex items-center gap-2 rounded-[var(--radius-button)] border border-[var(--color-accent)]/30 bg-[var(--color-accent-glow-mid)] px-4 py-2 text-meta font-semibold text-[var(--color-accent-bright)] transition-all duration-150 hover:border-[var(--color-accent)]/50 hover:bg-[var(--color-accent)]/15 hover:-translate-y-px active:translate-y-0"
|
||||
>
|
||||
<svg width="13" height="13" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
|
||||
<line x1="12" y1="5" x2="12" y2="19" /><line x1="5" y1="12" x2="19" y2="12" />
|
||||
</svg>
|
||||
New session
|
||||
</button>
|
||||
</div>
|
||||
</div>
|
||||
{/if}
|
||||
</div>
|
||||
{/if}
|
||||
</div>
|
||||
Reference in New Issue
Block a user