27b8540b71
Swap page content over the existing SSE connection without full page loads. A persistent Context resets its page-specific state (signals, actions, intervals, subscriptions) on navigate while preserving the SSE stream, CSRF token, and session. - c.Navigate(path) for programmatic SPA navigation from actions - Injected JS intercepts same-origin <a> clicks (opt out with data-via-no-boost) and handles popstate for back/forward - v.Layout() wraps pages in a shared shell for DRY nav/chrome - View Transition API integration via WithViewTransitions() on PatchElements and h.DataViewTransition() helper - POST /_navigate endpoint with CSRF validation and rate limiting - pageStopChan cancels page-level OnInterval goroutines on navigate - Includes SPA example with layout, counter, and live clock pages
53 lines
1.7 KiB
JavaScript
53 lines
1.7 KiB
JavaScript
(function() {
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const meta = document.querySelector('meta[data-signals]');
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if (!meta) return;
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const raw = meta.getAttribute('data-signals');
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const parsed = JSON.parse(raw.replace(/'/g, '"'));
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const ctxID = parsed['via-ctx'];
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const csrf = parsed['via-csrf'];
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if (!ctxID || !csrf) return;
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function navigate(url, popstate) {
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const params = new URLSearchParams({
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'via-ctx': ctxID,
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'via-csrf': csrf,
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'url': url,
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});
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if (popstate) params.set('popstate', '1');
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fetch('/_navigate', {
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method: 'POST',
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headers: {'Content-Type': 'application/x-www-form-urlencoded'},
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body: params.toString()
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}).then(function(res) {
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if (!res.ok) window.location.href = url;
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}).catch(function() {
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window.location.href = url;
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});
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}
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document.addEventListener('click', function(e) {
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var el = e.target;
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while (el && el.tagName !== 'A') el = el.parentElement;
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if (!el) return;
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if (e.ctrlKey || e.metaKey || e.shiftKey || e.altKey) return;
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if (el.hasAttribute('target')) return;
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if (el.hasAttribute('data-via-no-boost')) return;
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var href = el.getAttribute('href');
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if (!href || href.startsWith('#')) return;
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try {
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var url = new URL(href, window.location.origin);
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if (url.origin !== window.location.origin) return;
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e.preventDefault();
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navigate(url.pathname + url.search);
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} catch(_) {}
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});
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var ready = false;
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window.addEventListener('popstate', function() {
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if (!ready) { ready = true; return; }
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navigate(window.location.pathname + window.location.search, true);
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});
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// Mark as ready after initial load completes
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setTimeout(function() { ready = true; }, 0);
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})();
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