mirror of
https://github.com/Ark0N/Codeman.git
synced 2026-10-02 13:39:41 +02:00
feat(web): make a dead connection unmistakable instead of a red dot
Opening Codeman with nothing reachable (phone off the tailnet, VPN down, server stopped) rendered a normal-looking UI: the service worker serves the cached app shell, every /api call fails, and the only tell was an 8px red dot in the header corner. On a phone that reads as "there are no sessions". Two surfaces, chosen by whether there is anything worth looking at: - Full-screen overlay while no server state has loaded this page load. It names the host, lists the three things to check (network, VPN/Tailscale, server), counts down to the next retry, and offers "Retry now" plus "Show cached view" to demote itself to the banner. - Non-blocking banner once state HAS loaded, so a mid-session drop leaves the terminal scrollback readable. A 2.5s grace keeps a COM deploy (SSE is back in ~200ms) from flashing the banner every release; navigator.onLine === false skips the grace, since the device saying "no network" is never a blip. Retry re-arms the terminal WebSocket as well as SSE: planWsReconnect can give up outright, and the SSE backoff caps at 30s, so waiting it out is not always an option. The decision is pure (computeConnectionLossUi in constants.js, unit-tested in a node VM like the WS reconnect policy); app.js only writes the DOM.
This commit is contained in:
Codeman maintainer
@@ -669,6 +669,17 @@ class CodemanApp {
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this.maxReconnectAttempts = 10;
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this.isOnline = navigator.onLine;
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// Connection-loss UI (banner + full-screen overlay). The decision itself is
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// pure and lives in constants.js (computeConnectionLossUi); these are just
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// its inputs. `_connDownSince` is the timestamp the transport LEFT the
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// connected state, which is what the grace window is measured from.
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this._connDownSince = null;
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this._nextSseRetryAt = null; // when the scheduled SSE retry fires (countdown)
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this._offlineOverlayDismissed = false;
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this._offlineRetryPending = false; // a user-triggered retry is in flight
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this._offlineUiTicker = null;
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this._lastOfflineUiKey = '';
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// Reliable, durable input delivery (replaces the old best-effort queue).
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// Every input byte is recorded with a stable clientId + a monotonic
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// per-session seq, persisted to localStorage, and only dropped once the
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@@ -1457,6 +1468,10 @@ class CodemanApp {
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// then ramp up for real network issues.
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const delay = this.reconnectAttempts <= 1 ? 200
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: Math.min(500 * Math.pow(2, this.reconnectAttempts - 2), 30000);
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// Feeds the "Retrying in Ns" countdown. With a 30s cap on the backoff, a
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// silent wait that long is indistinguishable from a hung app.
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this._nextSseRetryAt = Date.now() + delay;
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this._updateConnectionLossUi();
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this.sseReconnectTimeout = setTimeout(() => this.connectSSE(), delay);
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};
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@@ -2333,7 +2348,17 @@ class CodemanApp {
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setConnectionStatus(status) {
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this._connectionStatus = status;
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// Track when the transport left 'connected'. The connection-loss UI waits
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// out a deploy-length blip before showing anything (see constants.js).
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if (status === 'connected') {
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this._connDownSince = null;
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this._nextSseRetryAt = null;
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this._offlineOverlayDismissed = false;
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} else if (this._connDownSince === null) {
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this._connDownSince = Date.now();
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}
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this._updateConnectionIndicator();
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this._updateConnectionLossUi();
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if (status === 'connected') {
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// Reconnected (SSE) — push any durably-queued input out immediately
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// instead of waiting for the next 2s sweep.
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@@ -2955,6 +2980,9 @@ class CodemanApp {
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window.addEventListener('online', () => {
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this.isOnline = true;
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this.reconnectAttempts = 0;
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// Restart the grace window: the radio just came back, so the next couple
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// of seconds of "not connected" are expected, not a server problem.
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this._connDownSince = Date.now();
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this.connectSSE();
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// Network came back — drain durably-queued input right away.
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this._redeliverSweep();
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@@ -2965,6 +2993,116 @@ class CodemanApp {
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});
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}
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// ── Connection-loss UI ─────────────────────────────────────────────────────
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// Why this exists: the service worker serves the cached app shell, so opening
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// Codeman with the server unreachable (phone off the tailnet, VPN down,
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// server stopped) rendered a normal-looking but empty dashboard whose only
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// hint was an 8px red dot in the header corner. The decision of what to show
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// is pure (computeConnectionLossUi in constants.js); this is the writer.
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/** Apply the offline banner / overlay for the current connection state. */
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_updateConnectionLossUi() {
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const policy = window.CodemanConnectionLoss;
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const banner = this.$('offlineBanner');
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const overlay = this.$('offlineOverlay');
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if (!policy || !banner || !overlay) return;
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const state = policy.compute({
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isOnline: this.isOnline,
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status: this._connectionStatus,
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// Server state has landed at least once this page load (SSE `init`), so
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// there is a UI worth keeping visible behind a non-blocking banner.
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everLoaded: this._initGeneration > 0,
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downSince: this._connDownSince,
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now: Date.now(),
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nextRetryAt: this._nextSseRetryAt,
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overlayDismissed: this._offlineOverlayDismissed,
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retryPending: this._offlineRetryPending,
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});
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// The ticker drives both the countdown and the grace deadline; neither is
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// event-driven, so it must run whenever the transport is down, including
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// while the decision is still 'hidden' inside the grace window.
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if (this._connDownSince === null) this._stopOfflineTicker();
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else this._startOfflineTicker();
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const retryLabel = this._offlineRetryPending
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? 'Reconnecting…'
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: state.retryInSec != null && state.retryInSec > 0
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? `Retrying in ${state.retryInSec}s`
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: 'Retrying…';
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// Called every second by the ticker, so skip the DOM writes when the rendered
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// result is unchanged (same reasoning as _updateConnectionIndicator).
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const key = `${state.mode}|${state.kind}|${retryLabel}`;
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if (key === this._lastOfflineUiKey) return;
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this._lastOfflineUiKey = key;
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banner.hidden = state.mode !== 'banner';
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overlay.hidden = state.mode !== 'overlay';
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document.body.classList.toggle('connection-lost', state.mode !== 'hidden');
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if (state.mode === 'banner') {
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const text = this.$('offlineBannerText');
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const detail = this.$('offlineBannerDetail');
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if (text) text.textContent = state.title;
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if (detail) detail.textContent = retryLabel;
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} else if (state.mode === 'overlay') {
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const title = this.$('offlineOverlayTitle');
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const body = this.$('offlineOverlayBody');
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const host = this.$('offlineOverlayHost');
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const status = this.$('offlineOverlayStatus');
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if (title) title.textContent = state.title;
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if (body) body.textContent = state.detail;
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if (host) host.textContent = location.host;
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if (status) status.textContent = retryLabel;
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}
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}
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_startOfflineTicker() {
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if (this._offlineUiTicker) return;
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this._offlineUiTicker = setInterval(() => this._updateConnectionLossUi(), 1000);
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}
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_stopOfflineTicker() {
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if (!this._offlineUiTicker) return;
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clearInterval(this._offlineUiTicker);
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this._offlineUiTicker = null;
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}
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/** Retry button on the banner/overlay: reconnect now instead of waiting out
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* the backoff (capped at 30s, and the WS plan can give up entirely). */
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retryConnection() {
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this._offlineRetryPending = true;
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this._nextSseRetryAt = null;
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this.reconnectAttempts = 0;
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this._clearTimer('sseReconnectTimeout');
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this.isOnline = navigator.onLine;
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this._lastOfflineUiKey = '';
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this._updateConnectionLossUi();
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this.connectSSE();
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// The terminal socket does not always come back on its own (planWsReconnect
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// 'give-up'), so the same button re-arms it.
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if (this.activeSessionId && this._wsState !== 'connected') {
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this._wsReconnectAttempts = 0;
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this._connectWs(this.activeSessionId);
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}
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this._clearTimer('_offlineRetryTimer');
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this._offlineRetryTimer = setTimeout(() => {
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this._offlineRetryPending = false;
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this._lastOfflineUiKey = '';
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this._updateConnectionLossUi();
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}, 1500);
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}
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/** "Show cached view": demote the blocking overlay to the banner for the rest
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* of this outage, so the cached UI can be inspected offline. */
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dismissOfflineOverlay() {
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this._offlineOverlayDismissed = true;
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this._lastOfflineUiKey = '';
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this._updateConnectionLossUi();
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}
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/** Show/hide the CJK input textarea based on user setting or server override */
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_updateCjkInputState() {
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const cjkEl = document.getElementById('cjkInput');
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@@ -180,6 +180,81 @@ function planWsReconnect(code, attempt) {
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return { action: 'reconnect', delayMs };
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}
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// Connection-loss UI policy.
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//
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// With the service worker serving the cached app shell, Codeman still *renders*
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// when the server is unreachable (phone off the tailnet, VPN down, server
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// stopped): a dashboard with no sessions and an 8px red dot in the header
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// corner. That reads as "there are no sessions", not "you are not connected".
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// This decides what the app surfaces instead:
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//
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// 'overlay': full-screen "can't reach Codeman". Used while the page has
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// never loaded server state, where the UI behind it is empty
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// anyway, so blocking it costs nothing and explains everything.
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// 'banner': non-blocking bar under the header. Used once state HAS loaded,
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// so the terminal scrollback stays readable while the link is down.
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// 'hidden': connected, or still inside the grace window.
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//
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// Grace: a COM deploy restarts the server and SSE is back in ~200ms. Shouting
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// on every deploy trains the user to ignore the warning, so a transport that is
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// merely *not yet connected* gets CONNECTION_LOSS_GRACE_MS to recover.
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// `navigator.onLine === false` skips the grace entirely: the device itself is
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// saying there is no network, which is never a 200ms blip.
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//
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// Pure: no DOM, no timers, no side effects. `now` is passed in.
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const CONNECTION_LOSS_GRACE_MS = 2500;
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function computeConnectionLossUi(input) {
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const {
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isOnline = true,
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status = 'connected',
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everLoaded = false,
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downSince = null,
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now = 0,
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nextRetryAt = null,
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overlayDismissed = false,
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retryPending = false,
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} = input || {};
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const hidden = { mode: 'hidden', kind: 'connected', title: '', detail: '', retryInSec: null };
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// The browser's own offline flag outranks the transport state: no network
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// means no reconnect is coming until it returns.
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const hardOffline = !isOnline || status === 'offline';
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if (!hardOffline) {
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if (status === 'connected') return hidden;
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const downMs = downSince == null ? 0 : Math.max(0, now - downSince);
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if (downMs < CONNECTION_LOSS_GRACE_MS) return { ...hidden, kind: 'connecting' };
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}
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// Dismissing the overlay ("show cached view") demotes it to the banner for
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// the rest of this outage, never back to invisible.
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const mode = everLoaded || overlayDismissed ? 'banner' : 'overlay';
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// A retry the user just triggered has no scheduled time; the caller renders
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// an indeterminate "Retrying…" for null.
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const retryInSec =
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retryPending || nextRetryAt == null ? null : Math.max(0, Math.ceil((nextRetryAt - now) / 1000));
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if (hardOffline) {
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return {
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mode,
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kind: 'offline',
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title: 'No network connection',
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detail: 'This device is offline. Codeman is showing the last cached view.',
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retryInSec,
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};
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}
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return {
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mode,
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kind: 'unreachable',
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title: "Can't reach the Codeman server",
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detail:
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'This device has a network, but the Codeman server is not answering. ' +
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'If you reach Codeman over Tailscale or a VPN, check that it is connected.',
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retryInSec,
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};
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}
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if (typeof window !== 'undefined') {
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window.WEBGL_FALLBACK = WEBGL_FALLBACK;
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window.evaluateWebGLLongTaskTrip = evaluateWebGLLongTaskTrip;
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@@ -190,6 +265,10 @@ if (typeof window !== 'undefined') {
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window.CodemanWsReconnect = {
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plan: planWsReconnect,
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};
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window.CodemanConnectionLoss = {
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compute: computeConnectionLossUi,
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GRACE_MS: CONNECTION_LOSS_GRACE_MS,
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};
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}
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// Scheduler API — prioritize terminal writes over background UI updates.
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@@ -149,6 +149,16 @@
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</div>
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</header>
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<!-- Connection-loss banner: shown once session state HAS loaded and the
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link then drops, so the terminal stays readable behind it.
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The blocking variant is #offlineOverlay at the end of <body>. -->
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<div class="offline-banner" id="offlineBanner" role="status" hidden>
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<span class="offline-banner-dot" aria-hidden="true"></span>
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<span class="offline-banner-text" id="offlineBannerText">No connection to the Codeman server</span>
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<span class="offline-banner-detail" id="offlineBannerDetail"></span>
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<button class="offline-banner-retry" id="offlineBannerRetry" onclick="app.retryConnection()">Retry now</button>
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</div>
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<!-- Timer Banner (shown when timed run is active) -->
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<div class="timer-banner" id="timerBanner" style="display: none;">
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<div class="timer-content">
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@@ -2679,6 +2689,39 @@
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<!-- Lines drawn dynamically -->
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</svg>
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<!-- Connection-loss overlay: the app shell is served from the service-worker
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cache, so Codeman renders even with nothing reachable. Without this, that
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looks like an empty dashboard rather than a dead connection. Only shown
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while no server state has loaded this page load. -->
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<div class="offline-overlay" id="offlineOverlay" hidden>
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<div class="offline-overlay-card" role="alertdialog" aria-labelledby="offlineOverlayTitle" aria-describedby="offlineOverlayBody">
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<div class="offline-overlay-icon" aria-hidden="true">
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<svg width="46" height="46" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.7" stroke-linecap="round" stroke-linejoin="round">
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<path d="M1 1l22 22"/>
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<path d="M16.72 11.06A10.94 10.94 0 0 1 19 12.55"/>
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<path d="M5 12.55a10.94 10.94 0 0 1 5.17-2.39"/>
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<path d="M10.71 5.05A16 16 0 0 1 22.58 9"/>
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<path d="M1.42 9a15.91 15.91 0 0 1 4.7-2.88"/>
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<path d="M8.53 16.11a6 6 0 0 1 6.95 0"/>
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<line x1="12" y1="20" x2="12.01" y2="20"/>
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</svg>
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</div>
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<h2 class="offline-overlay-title" id="offlineOverlayTitle">Can't reach the Codeman server</h2>
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<p class="offline-overlay-body" id="offlineOverlayBody"></p>
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<div class="offline-overlay-host" id="offlineOverlayHost"></div>
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<ul class="offline-overlay-hints">
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<li>Check Wi-Fi or mobile data</li>
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<li>Check your VPN / Tailscale is connected</li>
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<li>Check the Codeman server is still running</li>
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</ul>
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<div class="offline-overlay-actions">
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<button class="offline-overlay-btn offline-overlay-btn--primary" id="offlineOverlayRetry" onclick="app.retryConnection()">Retry now</button>
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<button class="offline-overlay-btn" onclick="app.dismissOfflineOverlay()">Show cached view</button>
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</div>
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<div class="offline-overlay-status" id="offlineOverlayStatus">Retrying…</div>
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</div>
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</div>
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<script defer src="constants.js"></script>
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<script defer src="i18n.js"></script>
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<script defer src="mobile-handlers.js"></script>
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@@ -2872,3 +2872,47 @@ html:is([data-skin="paper-gray"], [data-skin="solarized-light"], [data-skin="cat
|
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padding: 4px 7px;
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}
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}
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/* ============================================================================
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Connection loss: phone sizing
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The banner sits in normal flow directly under the fixed header (the container
|
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already reserves that space), so it needs the same safe-area padding as the
|
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other banners. The overlay is fixed and handles its own insets.
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============================================================================ */
|
||||
@media (max-width: 430px) {
|
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.offline-banner {
|
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padding: 0.4rem 0.5rem;
|
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padding-left: calc(0.5rem + var(--safe-area-left));
|
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padding-right: calc(0.5rem + var(--safe-area-right));
|
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font-size: 0.7rem;
|
||||
gap: 0.4rem;
|
||||
}
|
||||
|
||||
/* The countdown is the first thing to go when the bar gets tight. The
|
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wording plus the Retry button carry the message on their own. */
|
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.offline-banner-detail {
|
||||
display: none;
|
||||
}
|
||||
|
||||
.offline-banner-retry {
|
||||
padding: 0.25rem 0.5rem;
|
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margin-left: auto;
|
||||
}
|
||||
|
||||
.offline-overlay-card {
|
||||
padding: 22px 18px 18px;
|
||||
}
|
||||
|
||||
.offline-overlay-title {
|
||||
font-size: 1.05rem;
|
||||
}
|
||||
|
||||
.offline-overlay-actions {
|
||||
flex-direction: column;
|
||||
}
|
||||
|
||||
.offline-overlay-btn {
|
||||
width: 100%;
|
||||
padding: 0.65rem 1rem;
|
||||
}
|
||||
}
|
||||
|
||||
@@ -13480,3 +13480,200 @@ html[data-skin="daylight-blue"] .welcome-btn-tunnel.active:hover {
|
||||
/* Delete sits apart from Cancel/Save so it is not fat-fingered on the way to Save. */
|
||||
.webview-modal-actions { justify-content: space-between; }
|
||||
.webview-modal-actions .btn-danger { margin-right: auto; }
|
||||
|
||||
/* ═══════════════════════════════════════════════════════════════
|
||||
Connection loss: banner + full-screen overlay
|
||||
═══════════════════════════════════════════════════════════════
|
||||
The service worker serves the cached shell, so an unreachable server used to
|
||||
render as an empty-but-normal dashboard with only an 8px red dot in the
|
||||
header. Both surfaces below are deliberately skin-independent (literal
|
||||
colors, not tokens): "you are disconnected" must read identically on every
|
||||
skin, including the light ones. Visibility is driven by the `hidden`
|
||||
attribute, so the display rules need !important to lose to it. */
|
||||
|
||||
.offline-banner {
|
||||
display: flex;
|
||||
align-items: center;
|
||||
gap: 0.6rem;
|
||||
padding: 0.45rem 1rem;
|
||||
background: linear-gradient(90deg, #b91c1c, #991b1b);
|
||||
border-bottom: 1px solid rgba(0, 0, 0, 0.35);
|
||||
color: #fff;
|
||||
font-size: 0.78rem;
|
||||
font-weight: 600;
|
||||
letter-spacing: 0.01em;
|
||||
flex-shrink: 0;
|
||||
z-index: 1250;
|
||||
}
|
||||
|
||||
.offline-banner[hidden] {
|
||||
display: none !important;
|
||||
}
|
||||
|
||||
.offline-banner-dot {
|
||||
width: 9px;
|
||||
height: 9px;
|
||||
border-radius: 50%;
|
||||
background: #fff;
|
||||
flex-shrink: 0;
|
||||
animation: offline-banner-pulse 1.4s ease-in-out infinite;
|
||||
}
|
||||
|
||||
@keyframes offline-banner-pulse {
|
||||
0%, 100% { opacity: 1; }
|
||||
50% { opacity: 0.25; }
|
||||
}
|
||||
|
||||
.offline-banner-text {
|
||||
overflow: hidden;
|
||||
text-overflow: ellipsis;
|
||||
white-space: nowrap;
|
||||
}
|
||||
|
||||
.offline-banner-detail {
|
||||
color: rgba(255, 255, 255, 0.8);
|
||||
font-weight: 500;
|
||||
white-space: nowrap;
|
||||
margin-left: auto;
|
||||
}
|
||||
|
||||
.offline-banner-retry {
|
||||
flex-shrink: 0;
|
||||
padding: 0.2rem 0.6rem;
|
||||
border-radius: 5px;
|
||||
border: 1px solid rgba(255, 255, 255, 0.55);
|
||||
background: rgba(255, 255, 255, 0.12);
|
||||
color: #fff;
|
||||
font-size: 0.72rem;
|
||||
font-weight: 600;
|
||||
font-family: inherit;
|
||||
cursor: pointer;
|
||||
}
|
||||
|
||||
.offline-banner-retry:hover {
|
||||
background: rgba(255, 255, 255, 0.24);
|
||||
}
|
||||
|
||||
/* Above the mobile fixed header (1200) and modals (1300): this is a blocking
|
||||
"nothing works right now" state, and it only appears before any session
|
||||
state has loaded, so there is no modal underneath to bury. Stays below the
|
||||
image popup layer (3000). */
|
||||
.offline-overlay {
|
||||
position: fixed;
|
||||
inset: 0;
|
||||
z-index: 2500;
|
||||
display: flex;
|
||||
align-items: center;
|
||||
justify-content: center;
|
||||
padding: 20px;
|
||||
padding-top: calc(20px + var(--safe-area-top));
|
||||
padding-bottom: calc(20px + var(--safe-area-bottom));
|
||||
background: rgba(6, 8, 12, 0.93);
|
||||
backdrop-filter: blur(6px);
|
||||
-webkit-backdrop-filter: blur(6px);
|
||||
overflow-y: auto;
|
||||
}
|
||||
|
||||
.offline-overlay[hidden] {
|
||||
display: none !important;
|
||||
}
|
||||
|
||||
.offline-overlay-card {
|
||||
width: min(420px, 100%);
|
||||
box-sizing: border-box;
|
||||
padding: 26px 24px 22px;
|
||||
border-radius: 14px;
|
||||
border: 1px solid rgba(239, 68, 68, 0.45);
|
||||
background: #16181d;
|
||||
box-shadow: 0 24px 70px rgba(0, 0, 0, 0.55);
|
||||
color: #f3f6fa;
|
||||
text-align: center;
|
||||
}
|
||||
|
||||
.offline-overlay-icon {
|
||||
color: #ef4444;
|
||||
margin-bottom: 10px;
|
||||
}
|
||||
|
||||
.offline-overlay-title {
|
||||
margin: 0 0 8px;
|
||||
font-size: 1.15rem;
|
||||
font-weight: 700;
|
||||
color: #fff;
|
||||
}
|
||||
|
||||
.offline-overlay-body {
|
||||
margin: 0 0 14px;
|
||||
font-size: 0.85rem;
|
||||
line-height: 1.45;
|
||||
color: #b9c0cc;
|
||||
}
|
||||
|
||||
.offline-overlay-host {
|
||||
font-family: 'SF Mono', Monaco, monospace;
|
||||
font-size: 0.75rem;
|
||||
color: #8b93a1;
|
||||
background: rgba(255, 255, 255, 0.05);
|
||||
border: 1px solid rgba(255, 255, 255, 0.08);
|
||||
border-radius: 6px;
|
||||
padding: 6px 10px;
|
||||
margin-bottom: 14px;
|
||||
word-break: break-all;
|
||||
}
|
||||
|
||||
.offline-overlay-hints {
|
||||
margin: 0 0 18px;
|
||||
padding: 0;
|
||||
list-style: none;
|
||||
text-align: left;
|
||||
font-size: 0.8rem;
|
||||
line-height: 1.7;
|
||||
color: #a7aebb;
|
||||
}
|
||||
|
||||
.offline-overlay-hints li::before {
|
||||
content: '›';
|
||||
color: #ef4444;
|
||||
font-weight: 700;
|
||||
margin-right: 8px;
|
||||
}
|
||||
|
||||
.offline-overlay-actions {
|
||||
display: flex;
|
||||
gap: 10px;
|
||||
justify-content: center;
|
||||
flex-wrap: wrap;
|
||||
}
|
||||
|
||||
.offline-overlay-btn {
|
||||
padding: 0.5rem 1rem;
|
||||
border-radius: 7px;
|
||||
border: 1px solid rgba(255, 255, 255, 0.16);
|
||||
background: rgba(255, 255, 255, 0.06);
|
||||
color: #e7ebf2;
|
||||
font-size: 0.82rem;
|
||||
font-weight: 600;
|
||||
font-family: inherit;
|
||||
cursor: pointer;
|
||||
}
|
||||
|
||||
.offline-overlay-btn:hover {
|
||||
background: rgba(255, 255, 255, 0.12);
|
||||
}
|
||||
|
||||
.offline-overlay-btn--primary {
|
||||
background: #dc2626;
|
||||
border-color: #dc2626;
|
||||
color: #fff;
|
||||
}
|
||||
|
||||
.offline-overlay-btn--primary:hover {
|
||||
background: #ef4444;
|
||||
}
|
||||
|
||||
.offline-overlay-status {
|
||||
margin-top: 14px;
|
||||
font-size: 0.75rem;
|
||||
color: #8b93a1;
|
||||
min-height: 1em;
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user