agrynco
8e81572386
Add revision-safe service and template APIs, channel mapping, and validated admin controls. Ref: IT-1601
41 lines
1.4 KiB
JavaScript
41 lines
1.4 KiB
JavaScript
// Trusted parent-side measurement; template scripts stay disabled by sandbox and CSP.
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(() => {
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const frame = document.getElementById('previewHtmlFrame');
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let observer;
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let scheduled = 0;
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function resizePreview() {
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scheduled = 0;
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const document = frame.contentDocument;
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if (!document?.body) return;
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frame.style.height = '0px';
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const height = Math.max(document.body.scrollHeight, document.documentElement.scrollHeight);
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frame.style.height = `${Math.max(80, Math.ceil(height) + 2)}px`;
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}
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function scheduleResize() {
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cancelAnimationFrame(scheduled);
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scheduled = requestAnimationFrame(resizePreview);
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}
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function preventLinkNavigation(event) {
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if (event.target?.closest?.('a, area')) event.preventDefault();
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}
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frame.addEventListener('load', () => {
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observer?.disconnect();
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const document = frame.contentDocument;
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if (!document?.body) return;
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document.addEventListener('click', preventLinkNavigation, true);
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document.addEventListener('submit', event => event.preventDefault(), true);
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observer = new ResizeObserver(scheduleResize);
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observer.observe(document.body);
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scheduleResize();
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});
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window.addEventListener('resize', scheduleResize);
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window.addEventListener('pagehide', () => {
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observer?.disconnect();
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cancelAnimationFrame(scheduled);
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});
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})();
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