1749 lines
71 KiB
JavaScript
1749 lines
71 KiB
JavaScript
/**
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* <deck-stage> — reusable web component for HTML decks.
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*
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* Handles:
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* (a) speaker notes — reads <script type="application/json" id="speaker-notes">
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* and posts {slideIndexChanged: N} to the parent window on nav.
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* (b) keyboard navigation — ←/→, PgUp/PgDn, Space, Home/End, number keys.
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* (c) press R to reset to slide 0 (with a tasteful keyboard hint).
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* (d) bottom-center overlay showing slide count + hints, fades out on idle.
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* (e) auto-scaling — inner canvas is a fixed design size (default 1920×1080)
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* scaled with `transform: scale()` to fit the viewport, letterboxed.
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* Set the `noscale` attribute to render at authored size (1:1) — the
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* PPTX exporter sets this so its DOM capture sees unscaled geometry.
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* (f) print — `@media print` lays every slide out as its own page at the
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* design size, so the browser's Print → Save as PDF produces a clean
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* one-page-per-slide PDF with no extra setup.
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* (g) thumbnail rail — resizable left-hand column of per-slide thumbnails
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* (static clones). Click to navigate; ↑/↓ with a thumbnail focused to
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* step between slides; drag to reorder; right-click for
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* Skip / Move up / Move down / Delete (opens a Cancel/Delete confirm
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* dialog). Drag the rail's right edge to resize; width persists to
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* localStorage. Skipped slides carry `data-deck-skip`, are dimmed in
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* the rail, omitted from prev/next navigation, and hidden at print.
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* The rail is suppressed in presenting mode, in the host's Preview
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* mode (ViewerMode='none'), on `noscale`, and via the `no-rail`
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* attribute. Rail mutations dispatch a `deckchange`
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* CustomEvent on the element: detail = {action, from, to, slide}.
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*
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* Slides are HIDDEN, not unmounted. Non-active slides stay in the DOM with
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* `visibility: hidden` + `opacity: 0`, so their state (videos, iframes,
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* form inputs, React trees) is preserved across navigation.
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*
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* Lifecycle event — the component dispatches a `slidechange` CustomEvent on
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* itself whenever the active slide changes (including the initial mount).
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* The event bubbles and composes out of shadow DOM, so you can listen on
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* the <deck-stage> element or on document:
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*
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* document.querySelector('deck-stage').addEventListener('slidechange', (e) => {
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* e.detail.index // new 0-based index
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* e.detail.previousIndex // previous index, or -1 on init
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* e.detail.total // total slide count
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* e.detail.slide // the new active slide element
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* e.detail.previousSlide // the prior slide element, or null on init
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* e.detail.reason // 'init' | 'keyboard' | 'click' | 'tap' | 'api'
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* });
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*
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* Persistence: none at the deck level. The host app keeps the current slide
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* in its own URL (?slide=) and re-delivers it via location.hash on load, so a
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* bare load with no hash always starts at slide 1.
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*
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* Usage:
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* <style>deck-stage:not(:defined){visibility:hidden}</style>
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* <deck-stage width="1920" height="1080">
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* <section data-label="Title">...</section>
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* <section data-label="Agenda">...</section>
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* </deck-stage>
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* <script src="deck-stage.js"></script>
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*
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* The :not(:defined) rule prevents a flash of the first slide at its
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* authored styles before this script runs and attaches the shadow root.
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*
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* Slides are the direct element children of <deck-stage>. Each slide is
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* automatically tagged with:
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* - data-screen-label="NN Label" (1-indexed, for comment flow)
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* - data-om-validate="no_overflowing_text,no_overlapping_text,slide_sized_text"
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*/
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(() => {
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const DESIGN_W_DEFAULT = 1920;
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const DESIGN_H_DEFAULT = 1080;
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const OVERLAY_HIDE_MS = 1800;
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const VALIDATE_ATTR = 'no_overflowing_text,no_overlapping_text,slide_sized_text';
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const pad2 = (n) => String(n).padStart(2, '0');
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// Label precedence: data-label → data-screen-label (number stripped) → first heading → "Slide".
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const getSlideLabel = (el) => {
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const explicit = el.getAttribute('data-label');
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if (explicit) return explicit;
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const existing = el.getAttribute('data-screen-label');
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if (existing) return existing.replace(/^\s*\d+\s*/, '').trim() || existing;
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const h = el.querySelector('h1, h2, h3, [data-title]');
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const t = h && (h.textContent || '').trim().slice(0, 40);
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if (t) return t;
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return 'Slide';
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};
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const stylesheet = `
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:host {
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position: fixed;
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inset: 0;
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display: block;
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background: #000;
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color: #fff;
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font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, Arial, sans-serif;
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overflow: hidden;
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}
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/* connectedCallback holds this until document.fonts.ready (capped 2s) so
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* the first visible paint has the deck's real typography + final rail
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* layout. opacity (not visibility) so the active slide can't un-hide
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* itself via the ::slotted([data-deck-active]) visibility:visible rule.
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* Only the stage/rail hide — the black :host background stays, so the
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* iframe doesn't flash the page's default white. */
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:host([data-fonts-pending]) .stage,
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:host([data-fonts-pending]) .rail { opacity: 0; pointer-events: none; }
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.stage {
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position: absolute;
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inset: 0;
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display: flex;
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align-items: center;
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justify-content: center;
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}
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.canvas {
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position: relative;
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transform-origin: center center;
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flex-shrink: 0;
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background: #fff;
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will-change: transform;
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}
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/* Slides live in light DOM (via <slot>) so authored CSS still applies.
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We absolutely position each slotted child to stack them. */
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::slotted(*) {
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position: absolute !important;
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inset: 0 !important;
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width: 100% !important;
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height: 100% !important;
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box-sizing: border-box !important;
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overflow: hidden;
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opacity: 0;
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pointer-events: none;
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visibility: hidden;
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}
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::slotted([data-deck-active]) {
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opacity: 1;
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pointer-events: auto;
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visibility: visible;
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}
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/* Tap zones for mobile — back/forward thirds like Stories.
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Transparent, no visible UI, don't block the overlay. */
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.tapzones {
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position: fixed;
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inset: 0;
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display: flex;
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z-index: 2147482000;
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pointer-events: none;
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}
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.tapzone {
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flex: 1;
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pointer-events: auto;
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-webkit-tap-highlight-color: transparent;
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}
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/* Only activate tap zones on coarse pointers (touch devices). */
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@media (hover: hover) and (pointer: fine) {
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.tapzones { display: none; }
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}
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.overlay {
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position: fixed;
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left: 50%;
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bottom: 22px;
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transform: translate(-50%, 6px) scale(0.92);
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filter: blur(6px);
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display: flex;
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align-items: center;
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gap: 4px;
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padding: 4px;
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background: #000;
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color: #fff;
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border-radius: 999px;
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font-size: 12px;
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font-feature-settings: "tnum" 1;
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letter-spacing: 0.01em;
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opacity: 0;
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pointer-events: none;
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transition: opacity 260ms ease, transform 260ms cubic-bezier(.2,.8,.2,1), filter 260ms ease;
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transform-origin: center bottom;
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z-index: 2147483000;
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user-select: none;
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}
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.overlay[data-visible] {
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opacity: 1;
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pointer-events: auto;
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transform: translate(-50%, 0) scale(1);
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filter: blur(0);
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}
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.btn {
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appearance: none;
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-webkit-appearance: none;
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background: transparent;
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border: 0;
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margin: 0;
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padding: 0;
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color: inherit;
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font: inherit;
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cursor: default;
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display: inline-flex;
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align-items: center;
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justify-content: center;
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height: 28px;
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min-width: 28px;
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border-radius: 999px;
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color: rgba(255,255,255,0.72);
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transition: background 140ms ease, color 140ms ease;
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-webkit-tap-highlight-color: transparent;
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}
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.btn:hover { background: rgba(255,255,255,0.12); color: #fff; }
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.btn:active { background: rgba(255,255,255,0.18); }
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.btn:focus { outline: none; }
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.btn:focus-visible { outline: none; }
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.btn::-moz-focus-inner { border: 0; }
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.btn svg { width: 14px; height: 14px; display: block; }
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.btn.reset {
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font-size: 11px;
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font-weight: 500;
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letter-spacing: 0.02em;
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padding: 0 10px 0 12px;
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gap: 6px;
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color: rgba(255,255,255,0.72);
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}
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.btn.reset .kbd {
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display: inline-flex;
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align-items: center;
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justify-content: center;
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min-width: 16px;
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height: 16px;
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padding: 0 4px;
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font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
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font-size: 10px;
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line-height: 1;
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color: rgba(255,255,255,0.88);
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background: rgba(255,255,255,0.12);
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border-radius: 4px;
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}
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.count {
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font-variant-numeric: tabular-nums;
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color: #fff;
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font-weight: 500;
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padding: 0 8px;
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min-width: 42px;
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text-align: center;
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font-size: 12px;
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}
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.count .sep { color: rgba(255,255,255,0.45); margin: 0 3px; font-weight: 400; }
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.count .total { color: rgba(255,255,255,0.55); }
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.divider {
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width: 1px;
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height: 14px;
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background: rgba(255,255,255,0.18);
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margin: 0 2px;
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}
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/* ── Thumbnail rail ──────────────────────────────────────────────────
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Fixed column on the left; each thumbnail is a static deep-clone of
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the light-DOM slide scaled into a 16:9 (or design-aspect) frame. The
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stage re-fits around it (see _fit); hidden during present / noscale
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/ print so capture geometry and fullscreen output are unchanged. */
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.rail {
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position: fixed;
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left: 0;
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top: 0;
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bottom: 0;
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width: var(--deck-rail-w, 188px);
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background: #141414;
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border-right: 1px solid rgba(255,255,255,0.08);
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overflow-y: auto;
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overflow-x: hidden;
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padding: 12px 10px;
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box-sizing: border-box;
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display: flex;
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flex-direction: column;
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gap: 12px;
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z-index: 2147482500;
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scrollbar-width: thin;
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scrollbar-color: rgba(255,255,255,0.18) transparent;
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}
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.rail::-webkit-scrollbar { width: 8px; }
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.rail::-webkit-scrollbar-track { background: transparent; margin: 2px; }
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.rail::-webkit-scrollbar-thumb {
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background: rgba(255,255,255,0.18);
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border-radius: 4px;
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border: 2px solid transparent;
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background-clip: content-box;
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}
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.rail::-webkit-scrollbar-thumb:hover {
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background: rgba(255,255,255,0.28);
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border: 2px solid transparent;
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background-clip: content-box;
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}
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:host([no-rail]) .rail,
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:host([noscale]) .rail { display: none; }
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.rail[data-presenting] { display: none; }
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/* User-driven show/hide (the TweaksPanel toggle) slides instead of
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popping. Transitions are gated on :host([data-rail-anim]) — set only
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for the 200ms around the toggle — so window-resize and rail-width
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drag (which also call _fit) don't lag behind the cursor. */
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.rail[data-user-hidden] { transform: translateX(-100%); }
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:host([data-rail-anim]) .rail { transition: transform 200ms cubic-bezier(.3,.7,.4,1); }
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:host([data-rail-anim]) .stage { transition: left 200ms cubic-bezier(.3,.7,.4,1); }
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:host([data-rail-anim]) .canvas { transition: transform 200ms cubic-bezier(.3,.7,.4,1); }
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/* transition shorthand replaces rather than merges — repeat the base
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.overlay opacity/transform/filter transitions so visibility changes
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during the 200ms toggle window still fade instead of popping. */
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:host([data-rail-anim]) .overlay {
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transition: margin-left 200ms cubic-bezier(.3,.7,.4,1),
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opacity 260ms ease,
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transform 260ms cubic-bezier(.2,.8,.2,1),
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filter 260ms ease;
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}
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:host([data-rail-anim]) .tapzones { transition: left 200ms cubic-bezier(.3,.7,.4,1); }
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.thumb {
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position: relative;
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display: flex;
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align-items: flex-start;
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gap: 8px;
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cursor: pointer;
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user-select: none;
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}
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.thumb .num {
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width: 16px;
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flex-shrink: 0;
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font-size: 11px;
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font-weight: 500;
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text-align: right;
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color: rgba(255,255,255,0.55);
|
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padding-top: 2px;
|
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font-variant-numeric: tabular-nums;
|
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}
|
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.thumb .frame {
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position: relative;
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flex: 1;
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min-width: 0;
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aspect-ratio: var(--deck-aspect);
|
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background: #fff;
|
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border-radius: 4px;
|
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outline: 2px solid transparent;
|
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outline-offset: 0;
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overflow: hidden;
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transition: outline-color 120ms ease;
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}
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.thumb:hover .frame { outline-color: rgba(255,255,255,0.25); }
|
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.thumb { outline: none; }
|
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.thumb:focus-visible .frame { outline-color: rgba(255,255,255,0.5); }
|
||
.thumb[data-current] .num { color: #fff; }
|
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.thumb[data-current] .frame { outline-color: #D97757; }
|
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.thumb[data-dragging] { opacity: 0.35; }
|
||
.thumb::before {
|
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content: '';
|
||
position: absolute;
|
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left: 24px;
|
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right: 0;
|
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height: 3px;
|
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border-radius: 2px;
|
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background: #D97757;
|
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opacity: 0;
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||
pointer-events: none;
|
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}
|
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.thumb[data-drop="before"]::before { top: -8px; opacity: 1; }
|
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.thumb[data-drop="after"]::before { bottom: -8px; opacity: 1; }
|
||
.thumb[data-skip] .frame { opacity: 0.35; }
|
||
.thumb[data-skip] .frame::after {
|
||
content: 'Skipped';
|
||
position: absolute;
|
||
inset: 0;
|
||
display: flex;
|
||
align-items: center;
|
||
justify-content: center;
|
||
background: rgba(0,0,0,0.45);
|
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color: #fff;
|
||
font-size: 10px;
|
||
font-weight: 500;
|
||
letter-spacing: 0.04em;
|
||
}
|
||
|
||
.ctxmenu {
|
||
position: fixed;
|
||
min-width: 150px;
|
||
padding: 4px;
|
||
background: #242424;
|
||
border: 1px solid rgba(255,255,255,0.12);
|
||
border-radius: 7px;
|
||
box-shadow: 0 8px 24px rgba(0,0,0,0.45);
|
||
z-index: 2147483100;
|
||
display: none;
|
||
font-size: 12px;
|
||
}
|
||
.ctxmenu[data-open] { display: block; }
|
||
.ctxmenu button {
|
||
display: block;
|
||
width: 100%;
|
||
appearance: none;
|
||
border: 0;
|
||
background: transparent;
|
||
color: #e8e8e8;
|
||
font: inherit;
|
||
text-align: left;
|
||
padding: 6px 10px;
|
||
border-radius: 4px;
|
||
cursor: pointer;
|
||
}
|
||
.ctxmenu button:hover:not(:disabled) { background: rgba(255,255,255,0.08); }
|
||
.ctxmenu button:disabled { opacity: 0.35; cursor: default; }
|
||
.ctxmenu hr {
|
||
border: 0;
|
||
border-top: 1px solid rgba(255,255,255,0.1);
|
||
margin: 4px 2px;
|
||
}
|
||
|
||
.rail-resize {
|
||
position: fixed;
|
||
left: calc(var(--deck-rail-w, 188px) - 3px);
|
||
top: 0;
|
||
bottom: 0;
|
||
width: 6px;
|
||
cursor: col-resize;
|
||
z-index: 2147482600;
|
||
touch-action: none;
|
||
}
|
||
.rail-resize:hover,
|
||
.rail-resize[data-dragging] { background: rgba(255,255,255,0.12); }
|
||
:host([no-rail]) .rail-resize,
|
||
:host([noscale]) .rail-resize,
|
||
.rail[data-presenting] + .rail-resize,
|
||
.rail[data-user-hidden] + .rail-resize { display: none; }
|
||
|
||
/* Delete-confirm popup — matches the SPA's ConfirmDialog layout
|
||
(title + message body, depressed footer with Cancel / Delete). */
|
||
.confirm-backdrop {
|
||
position: fixed;
|
||
inset: 0;
|
||
background: rgba(0,0,0,0.45);
|
||
z-index: 2147483200;
|
||
display: none;
|
||
align-items: center;
|
||
justify-content: center;
|
||
}
|
||
.confirm-backdrop[data-open] { display: flex; }
|
||
.confirm {
|
||
width: 320px;
|
||
max-width: calc(100vw - 32px);
|
||
background: #2a2a2a;
|
||
color: #e8e8e8;
|
||
border: 1px solid rgba(255,255,255,0.12);
|
||
border-radius: 12px;
|
||
box-shadow: 0 12px 32px rgba(0,0,0,0.5);
|
||
overflow: hidden;
|
||
font-family: inherit;
|
||
animation: deck-confirm-in 0.18s ease;
|
||
}
|
||
@keyframes deck-confirm-in {
|
||
from { opacity: 0; transform: scale(0.96); }
|
||
to { opacity: 1; transform: scale(1); }
|
||
}
|
||
.confirm .body { padding: 20px 20px 16px; }
|
||
.confirm .title { font-size: 14px; font-weight: 600; margin-bottom: 4px; }
|
||
.confirm .msg { font-size: 13px; line-height: 1.5; color: rgba(255,255,255,0.65); }
|
||
.confirm .footer {
|
||
padding: 14px 20px;
|
||
background: #1f1f1f;
|
||
border-top: 1px solid rgba(255,255,255,0.08);
|
||
display: flex;
|
||
justify-content: flex-end;
|
||
gap: 8px;
|
||
}
|
||
.confirm button {
|
||
appearance: none;
|
||
font: inherit;
|
||
font-size: 13px;
|
||
font-weight: 500;
|
||
padding: 8px 16px;
|
||
border-radius: 8px;
|
||
cursor: pointer;
|
||
}
|
||
.confirm .cancel {
|
||
background: transparent;
|
||
border: 0;
|
||
color: rgba(255,255,255,0.8);
|
||
}
|
||
.confirm .cancel:hover { background: rgba(255,255,255,0.08); }
|
||
.confirm .danger {
|
||
background: #c96442;
|
||
border: 1px solid rgba(0,0,0,0.15);
|
||
color: #fff;
|
||
box-shadow: 0 1px 3px rgba(166,50,68,0.3), 0 2px 6px rgba(166,50,68,0.18);
|
||
}
|
||
.confirm .danger:hover { background: #b5563a; }
|
||
|
||
/* ── Print: one page per slide, no chrome ────────────────────────────
|
||
The screen layout stacks every slide at inset:0 inside a scaled
|
||
canvas; for print we want them in document flow at the authored
|
||
design size so the browser paginates one slide per sheet. The
|
||
@page size is set from the width/height attributes via the inline
|
||
<style id="deck-stage-print-page"> that connectedCallback injects
|
||
into <head> (the @page at-rule has no effect inside shadow DOM). */
|
||
@media print {
|
||
:host {
|
||
position: static;
|
||
inset: auto;
|
||
background: none;
|
||
overflow: visible;
|
||
color: inherit;
|
||
}
|
||
.stage { position: static; display: block; }
|
||
.canvas {
|
||
transform: none !important;
|
||
width: auto !important;
|
||
height: auto !important;
|
||
background: none;
|
||
will-change: auto;
|
||
}
|
||
::slotted(*) {
|
||
position: relative !important;
|
||
inset: auto !important;
|
||
width: var(--deck-design-w) !important;
|
||
height: var(--deck-design-h) !important;
|
||
box-sizing: border-box !important;
|
||
opacity: 1 !important;
|
||
visibility: visible !important;
|
||
pointer-events: auto;
|
||
break-after: page;
|
||
page-break-after: always;
|
||
break-inside: avoid;
|
||
overflow: hidden;
|
||
}
|
||
/* :last-child alone isn't enough once data-deck-skip hides the
|
||
trailing slide(s) — the last *visible* slide still carries
|
||
break-after:page and prints a blank sheet. _markLastVisible()
|
||
maintains data-deck-last-visible on the last non-skipped slide. */
|
||
::slotted(*:last-child),
|
||
::slotted([data-deck-last-visible]) {
|
||
break-after: auto;
|
||
page-break-after: auto;
|
||
}
|
||
::slotted([data-deck-skip]) { display: none !important; }
|
||
.overlay, .tapzones, .rail, .rail-resize, .ctxmenu, .confirm-backdrop { display: none !important; }
|
||
}
|
||
`;
|
||
|
||
class DeckStage extends HTMLElement {
|
||
static get observedAttributes() { return ['width', 'height', 'noscale', 'no-rail']; }
|
||
|
||
constructor() {
|
||
super();
|
||
this._root = this.attachShadow({ mode: 'open' });
|
||
this._index = 0;
|
||
this._slides = [];
|
||
this._notes = [];
|
||
this._hideTimer = null;
|
||
this._mouseIdleTimer = null;
|
||
this._menuIndex = -1;
|
||
|
||
this._onKey = this._onKey.bind(this);
|
||
this._onResize = this._onResize.bind(this);
|
||
this._onSlotChange = this._onSlotChange.bind(this);
|
||
this._onMouseMove = this._onMouseMove.bind(this);
|
||
this._onTapBack = this._onTapBack.bind(this);
|
||
this._onTapForward = this._onTapForward.bind(this);
|
||
this._onMessage = this._onMessage.bind(this);
|
||
// Capture-phase close so a click anywhere dismisses the menu, but
|
||
// ignore clicks that land inside the menu itself — otherwise the
|
||
// capture handler runs before the menu's own (bubble) handler and
|
||
// clears _menuIndex out from under it.
|
||
this._onDocClick = (e) => {
|
||
if (this._menu && e.composedPath && e.composedPath().includes(this._menu)) return;
|
||
this._closeMenu();
|
||
};
|
||
}
|
||
|
||
get designWidth() {
|
||
return parseInt(this.getAttribute('width'), 10) || DESIGN_W_DEFAULT;
|
||
}
|
||
get designHeight() {
|
||
return parseInt(this.getAttribute('height'), 10) || DESIGN_H_DEFAULT;
|
||
}
|
||
|
||
connectedCallback() {
|
||
// Presenter-view popup loads deckUrl?_snthumb=...#N for its prev/cur/
|
||
// next thumbnails — the rail has no business rendering inside those
|
||
// (wrong scale, and it offsets the stage so the thumb shows a gutter).
|
||
if (/[?&]_snthumb=/.test(location.search)) this.setAttribute('no-rail', '');
|
||
this._render();
|
||
this._loadNotes();
|
||
this._syncPrintPageRule();
|
||
window.addEventListener('keydown', this._onKey);
|
||
window.addEventListener('resize', this._onResize);
|
||
window.addEventListener('mousemove', this._onMouseMove, { passive: true });
|
||
window.addEventListener('message', this._onMessage);
|
||
window.addEventListener('click', this._onDocClick, true);
|
||
// Initial collection + layout happens via slotchange, which fires on mount.
|
||
this._enableRail();
|
||
// Hold the stage hidden until webfonts are ready so the first visible
|
||
// paint has the deck's real typography — the :not(:defined) guard in
|
||
// the page HTML only covers custom-element upgrade, not font load.
|
||
// Capped so a 404'd font URL can't blank the deck indefinitely.
|
||
this.setAttribute('data-fonts-pending', '');
|
||
const reveal = () => this.removeAttribute('data-fonts-pending');
|
||
// rAF first: fonts.ready is a pre-resolved promise until layout has
|
||
// resolved the slotted text's font-family and pushed a FontFace into
|
||
// 'loading'. Reading it here in connectedCallback (parse-time) would
|
||
// settle the race in a microtask before any font fetch starts.
|
||
requestAnimationFrame(() => {
|
||
Promise.race([
|
||
document.fonts ? document.fonts.ready : Promise.resolve(),
|
||
new Promise((r) => setTimeout(r, 2000)),
|
||
]).then(reveal, reveal);
|
||
});
|
||
}
|
||
|
||
_enableRail() {
|
||
// Idempotent — older host builds still post __omelette_rail_enabled.
|
||
// no-rail guard keeps the observers/stylesheet walk off the cheap path
|
||
// for presenter-popup thumbnail iframes (up to 9 per view).
|
||
if (this._railEnabled || this.hasAttribute('no-rail')) return;
|
||
this._railEnabled = true;
|
||
// Per-viewer preference — restored alongside rail width. Default on;
|
||
// only a stored '0' (from the TweaksPanel toggle) hides it.
|
||
this._railVisible = true;
|
||
try {
|
||
if (localStorage.getItem('deck-stage.railVisible') === '0') this._railVisible = false;
|
||
} catch (e) {}
|
||
// Live thumbnail updates: watch the light-DOM slides for content
|
||
// edits and re-clone just the affected thumb(s), debounced. Ignore
|
||
// the data-deck-* / data-screen-label / data-om-validate attributes
|
||
// this component itself writes so nav and skip don't trigger
|
||
// spurious refreshes.
|
||
const OWN_ATTRS = /^data-(deck-|screen-label$|om-validate$)/;
|
||
this._liveDirty = new Set();
|
||
this._liveObserver = new MutationObserver((records) => {
|
||
for (const r of records) {
|
||
if (r.type === 'attributes' && OWN_ATTRS.test(r.attributeName || '')) continue;
|
||
let n = r.target;
|
||
while (n && n.parentElement !== this) n = n.parentElement;
|
||
if (n && this._slideSet && this._slideSet.has(n)) this._liveDirty.add(n);
|
||
}
|
||
if (this._liveDirty.size && !this._liveTimer) {
|
||
this._liveTimer = setTimeout(() => {
|
||
this._liveTimer = null;
|
||
this._liveDirty.forEach((s) => this._refreshThumb(s));
|
||
this._liveDirty.clear();
|
||
}, 200);
|
||
}
|
||
});
|
||
this._liveObserver.observe(this, {
|
||
subtree: true, childList: true, characterData: true, attributes: true,
|
||
});
|
||
// Lazy thumbnail materialization — clone the slide only when its
|
||
// frame scrolls into (or near) the rail viewport. rootMargin gives
|
||
// ~4 thumbs of pre-load so fast scrolling doesn't flash blanks.
|
||
this._railObserver = new IntersectionObserver((entries) => {
|
||
entries.forEach((e) => {
|
||
if (e.isIntersecting && e.target.__deckThumb) {
|
||
this._materialize(e.target.__deckThumb);
|
||
}
|
||
});
|
||
}, { root: this._rail, rootMargin: '400px 0px' });
|
||
// Tweaks typically change CSS vars / attrs OUTSIDE <deck-stage>
|
||
// (on <html>, <body>, a wrapper div, or a <style> tag), which
|
||
// _liveObserver can't see. Re-snapshot author CSS (constructable
|
||
// sheet is shared by reference, so one replaceSync updates every
|
||
// thumb shadow root) and re-sync each thumb host's attrs + custom
|
||
// properties. In-slide DOM mutations are _liveObserver's job.
|
||
// Debounced so slider drags don't thrash.
|
||
this._onTweakChange = () => {
|
||
clearTimeout(this._tweakTimer);
|
||
this._tweakTimer = setTimeout(() => {
|
||
this._snapshotAuthorCss();
|
||
// One getComputedStyle for the whole batch — each
|
||
// getPropertyValue read below reuses the same computed style
|
||
// as long as nothing invalidates layout between thumbs.
|
||
const cs = getComputedStyle(this);
|
||
(this._thumbs || []).forEach((t) => {
|
||
if (t.host) this._syncThumbHostAttrs(t.host, cs);
|
||
});
|
||
}, 120);
|
||
};
|
||
window.addEventListener('tweakchange', this._onTweakChange);
|
||
this._snapshotAuthorCss();
|
||
// Build the rail now that it's enabled — slotchange already fired,
|
||
// so _renderRail's early-return skipped the initial build.
|
||
this._syncRailHidden();
|
||
this._renderRail();
|
||
this._fit();
|
||
}
|
||
|
||
/** Snapshot document stylesheets into a constructable sheet that each
|
||
* thumbnail's nested shadow root adopts — so author CSS styles the
|
||
* cloned slide content without touching this component's chrome.
|
||
* Cross-origin sheets throw on .cssRules — skip them. Re-callable:
|
||
* the existing constructable sheet is reused via replaceSync so every
|
||
* already-adopted shadow root picks up the fresh CSS without re-adopt. */
|
||
_snapshotAuthorCss() {
|
||
// :root in an adopted sheet inside a shadow root matches nothing
|
||
// (only the document root qualifies), so author rules like
|
||
// `:root[data-voice="modern"] .serif` never reach the clones.
|
||
// Rewrite :root → :host and mirror <html>'s data-*/class/lang onto
|
||
// each thumb host (see _syncThumbHostAttrs) so the same selectors
|
||
// match inside the thumbnail's shadow tree.
|
||
const authorCss = Array.from(document.styleSheets).map((sh) => {
|
||
try {
|
||
return Array.from(sh.cssRules).map((r) => r.cssText).join('\n');
|
||
} catch (e) { return ''; }
|
||
}).join('\n')
|
||
// The shadow host is featureless outside the functional :host(...)
|
||
// form, so any compound on :root — [attr], .class, #id, :pseudo —
|
||
// must become :host(<compound>) not :host<compound>. Same for the
|
||
// html type selector (Tailwind class-strategy dark mode emits
|
||
// html.dark; Pico uses html[data-theme]), which has nothing to
|
||
// match inside the thumb's shadow tree.
|
||
.replace(/:root((?:\[[^\]]*\]|[.#][-\w]+|:[-\w]+(?:\([^)]*\))?)+)/g, ':host($1)')
|
||
.replace(/:root\b/g, ':host')
|
||
.replace(/(^|[\s,>~+(}])html((?:\[[^\]]*\]|[.#][-\w]+|:[-\w]+(?:\([^)]*\))?)+)(?![-\w])/g, '$1:host($2)')
|
||
.replace(/(^|[\s,>~+(}])html(?![-\w])/g, '$1:host');
|
||
// Every custom property the author references. _syncThumbHostAttrs
|
||
// mirrors each one's *computed* value at <deck-stage> onto the
|
||
// thumb host so the live value wins over the :host default above
|
||
// regardless of which ancestor the tweak wrote to (<html>, <body>,
|
||
// a wrapper div, or the deck-stage element itself all inherit
|
||
// down to getComputedStyle(this)).
|
||
this._authorVars = new Set(authorCss.match(/--[\w-]+/g) || []);
|
||
try {
|
||
if (!this._adoptedSheet) this._adoptedSheet = new CSSStyleSheet();
|
||
this._adoptedSheet.replaceSync(authorCss);
|
||
} catch (e) {
|
||
this._adoptedSheet = null;
|
||
this._authorCss = authorCss;
|
||
}
|
||
}
|
||
|
||
_syncThumbHostAttrs(host, cs) {
|
||
const de = document.documentElement;
|
||
// setAttribute overwrites but can't delete — an attr removed from
|
||
// <html> (toggleAttribute off, classList emptied) would linger on
|
||
// the host and :host([data-*]) / :host(.foo) rules would keep
|
||
// matching. Remove stale mirrored attrs first; iterate backward
|
||
// because removeAttribute mutates the live NamedNodeMap.
|
||
for (let i = host.attributes.length - 1; i >= 0; i--) {
|
||
const n = host.attributes[i].name;
|
||
if ((n.startsWith('data-') || n === 'class' || n === 'lang')
|
||
&& !de.hasAttribute(n)) {
|
||
host.removeAttribute(n);
|
||
}
|
||
}
|
||
for (const a of de.attributes) {
|
||
if (a.name.startsWith('data-') || a.name === 'class' || a.name === 'lang') {
|
||
host.setAttribute(a.name, a.value);
|
||
}
|
||
}
|
||
// The :root→:host rewrite in _snapshotAuthorCss pins each custom
|
||
// property to its stylesheet default on the thumb host, shadowing
|
||
// the live value that would otherwise inherit. Tweaks can write the
|
||
// live value on any ancestor — <html>, <body>, a wrapper div, the
|
||
// deck-stage element — so read it as the *computed* value at
|
||
// <deck-stage> (which sees the whole inheritance chain) rather than
|
||
// trying to guess which element the author wrote to. Inline on the
|
||
// host beats the :host{} rule. remove-stale covers vars dropped
|
||
// from the stylesheet between snapshots.
|
||
const vars = this._authorVars || new Set();
|
||
for (let i = host.style.length - 1; i >= 0; i--) {
|
||
const p = host.style[i];
|
||
if (p.startsWith('--') && !vars.has(p)) host.style.removeProperty(p);
|
||
}
|
||
const live = cs || getComputedStyle(this);
|
||
vars.forEach((p) => {
|
||
const v = live.getPropertyValue(p);
|
||
if (v) host.style.setProperty(p, v.trim());
|
||
else host.style.removeProperty(p);
|
||
});
|
||
}
|
||
|
||
disconnectedCallback() {
|
||
window.removeEventListener('keydown', this._onKey);
|
||
window.removeEventListener('resize', this._onResize);
|
||
window.removeEventListener('mousemove', this._onMouseMove);
|
||
window.removeEventListener('message', this._onMessage);
|
||
window.removeEventListener('click', this._onDocClick, true);
|
||
if (this._hideTimer) clearTimeout(this._hideTimer);
|
||
if (this._mouseIdleTimer) clearTimeout(this._mouseIdleTimer);
|
||
if (this._liveTimer) clearTimeout(this._liveTimer);
|
||
if (this._tweakTimer) clearTimeout(this._tweakTimer);
|
||
if (this._railAnimTimer) clearTimeout(this._railAnimTimer);
|
||
if (this._scaleRaf) cancelAnimationFrame(this._scaleRaf);
|
||
if (this._liveObserver) this._liveObserver.disconnect();
|
||
if (this._railObserver) this._railObserver.disconnect();
|
||
if (this._onTweakChange) window.removeEventListener('tweakchange', this._onTweakChange);
|
||
}
|
||
|
||
attributeChangedCallback() {
|
||
if (this._canvas) {
|
||
this._canvas.style.width = this.designWidth + 'px';
|
||
this._canvas.style.height = this.designHeight + 'px';
|
||
this._canvas.style.setProperty('--deck-design-w', this.designWidth + 'px');
|
||
this._canvas.style.setProperty('--deck-design-h', this.designHeight + 'px');
|
||
if (this._rail) {
|
||
this._rail.style.setProperty('--deck-aspect', this.designWidth + '/' + this.designHeight);
|
||
}
|
||
this._fit();
|
||
this._scaleThumbs();
|
||
this._syncPrintPageRule();
|
||
}
|
||
}
|
||
|
||
_render() {
|
||
const style = document.createElement('style');
|
||
style.textContent = stylesheet;
|
||
|
||
const stage = document.createElement('div');
|
||
stage.className = 'stage';
|
||
|
||
const canvas = document.createElement('div');
|
||
canvas.className = 'canvas';
|
||
canvas.style.width = this.designWidth + 'px';
|
||
canvas.style.height = this.designHeight + 'px';
|
||
canvas.style.setProperty('--deck-design-w', this.designWidth + 'px');
|
||
canvas.style.setProperty('--deck-design-h', this.designHeight + 'px');
|
||
|
||
const slot = document.createElement('slot');
|
||
slot.addEventListener('slotchange', this._onSlotChange);
|
||
canvas.appendChild(slot);
|
||
stage.appendChild(canvas);
|
||
|
||
// Tap zones (mobile): left third = back, right third = forward.
|
||
const tapzones = document.createElement('div');
|
||
tapzones.className = 'tapzones export-hidden';
|
||
tapzones.setAttribute('aria-hidden', 'true');
|
||
tapzones.setAttribute('data-noncommentable', '');
|
||
const tzBack = document.createElement('div');
|
||
tzBack.className = 'tapzone tapzone--back';
|
||
const tzMid = document.createElement('div');
|
||
tzMid.className = 'tapzone tapzone--mid';
|
||
tzMid.style.pointerEvents = 'none';
|
||
const tzFwd = document.createElement('div');
|
||
tzFwd.className = 'tapzone tapzone--fwd';
|
||
tzBack.addEventListener('click', this._onTapBack);
|
||
tzFwd.addEventListener('click', this._onTapForward);
|
||
tapzones.append(tzBack, tzMid, tzFwd);
|
||
|
||
// Overlay: compact, solid black, with clickable controls.
|
||
const overlay = document.createElement('div');
|
||
overlay.className = 'overlay export-hidden';
|
||
overlay.setAttribute('role', 'toolbar');
|
||
overlay.setAttribute('aria-label', 'Deck controls');
|
||
overlay.setAttribute('data-noncommentable', '');
|
||
overlay.innerHTML = `
|
||
<button class="btn prev" type="button" aria-label="Previous slide" title="Previous (←)">
|
||
<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.8" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><path d="M10 3L5 8l5 5"/></svg>
|
||
</button>
|
||
<span class="count" aria-live="polite"><span class="current">1</span><span class="sep">/</span><span class="total">1</span></span>
|
||
<button class="btn next" type="button" aria-label="Next slide" title="Next (→)">
|
||
<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.8" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><path d="M6 3l5 5-5 5"/></svg>
|
||
</button>
|
||
<span class="divider"></span>
|
||
<button class="btn reset" type="button" aria-label="Reset to first slide" title="Reset (R)">Reset<span class="kbd">R</span></button>
|
||
`;
|
||
|
||
overlay.querySelector('.prev').addEventListener('click', () => this._advance(-1, 'click'));
|
||
overlay.querySelector('.next').addEventListener('click', () => this._advance(1, 'click'));
|
||
overlay.querySelector('.reset').addEventListener('click', () => this._go(0, 'click'));
|
||
|
||
// Thumbnail rail + context menu. Thumbnails are populated in
|
||
// _renderRail() after _collectSlides().
|
||
const rail = document.createElement('div');
|
||
rail.className = 'rail export-hidden';
|
||
rail.setAttribute('data-noncommentable', '');
|
||
rail.style.setProperty('--deck-aspect', this.designWidth + '/' + this.designHeight);
|
||
// Edge auto-scroll while dragging a thumb near the rail's top/bottom
|
||
// so off-screen drop targets are reachable. Native dragover fires
|
||
// continuously while the pointer is stationary, so a per-event nudge
|
||
// (ramped by edge proximity) is enough — no rAF loop needed.
|
||
rail.addEventListener('dragover', (e) => {
|
||
if (this._dragFrom == null) return;
|
||
const r = rail.getBoundingClientRect();
|
||
const EDGE = 40;
|
||
const dt = e.clientY - r.top;
|
||
const db = r.bottom - e.clientY;
|
||
if (dt < EDGE) rail.scrollTop -= Math.ceil((EDGE - dt) / 3);
|
||
else if (db < EDGE) rail.scrollTop += Math.ceil((EDGE - db) / 3);
|
||
});
|
||
|
||
const menu = document.createElement('div');
|
||
menu.className = 'ctxmenu export-hidden';
|
||
menu.setAttribute('data-noncommentable', '');
|
||
menu.innerHTML = `
|
||
<button type="button" data-act="skip">Skip slide</button>
|
||
<button type="button" data-act="up">Move up</button>
|
||
<button type="button" data-act="down">Move down</button>
|
||
<hr>
|
||
<button type="button" data-act="delete">Delete slide</button>
|
||
`;
|
||
menu.addEventListener('click', (e) => {
|
||
const act = e.target && e.target.getAttribute && e.target.getAttribute('data-act');
|
||
if (!act) return;
|
||
const i = this._menuIndex;
|
||
this._closeMenu();
|
||
if (act === 'skip') this._toggleSkip(i);
|
||
else if (act === 'up') this._moveSlide(i, i - 1);
|
||
else if (act === 'down') this._moveSlide(i, i + 1);
|
||
else if (act === 'delete') this._openConfirm(i);
|
||
});
|
||
menu.addEventListener('contextmenu', (e) => e.preventDefault());
|
||
|
||
// Rail resize handle — drag to set --deck-rail-w, persisted to
|
||
// localStorage so the width survives reloads.
|
||
const resize = document.createElement('div');
|
||
resize.className = 'rail-resize export-hidden';
|
||
resize.setAttribute('data-noncommentable', '');
|
||
resize.addEventListener('pointerdown', (e) => {
|
||
e.preventDefault();
|
||
resize.setPointerCapture(e.pointerId);
|
||
resize.setAttribute('data-dragging', '');
|
||
const move = (ev) => this._setRailWidth(ev.clientX);
|
||
const up = () => {
|
||
resize.removeEventListener('pointermove', move);
|
||
resize.removeEventListener('pointerup', up);
|
||
resize.removeEventListener('pointercancel', up);
|
||
resize.removeAttribute('data-dragging');
|
||
try { localStorage.setItem('deck-stage.railWidth', String(this._railPx)); } catch (err) {}
|
||
};
|
||
resize.addEventListener('pointermove', move);
|
||
resize.addEventListener('pointerup', up);
|
||
resize.addEventListener('pointercancel', up);
|
||
});
|
||
|
||
// Delete-confirm dialog — mirrors the SPA's ConfirmDialog layout.
|
||
const confirm = document.createElement('div');
|
||
confirm.className = 'confirm-backdrop export-hidden';
|
||
confirm.setAttribute('data-noncommentable', '');
|
||
confirm.innerHTML = `
|
||
<div class="confirm" role="dialog" aria-modal="true">
|
||
<div class="body">
|
||
<div class="title">Delete slide?</div>
|
||
<div class="msg">This slide will be removed from the deck.</div>
|
||
</div>
|
||
<div class="footer">
|
||
<button type="button" class="cancel">Cancel</button>
|
||
<button type="button" class="danger">Delete</button>
|
||
</div>
|
||
</div>
|
||
`;
|
||
confirm.addEventListener('click', (e) => {
|
||
if (e.target === confirm) this._closeConfirm();
|
||
});
|
||
confirm.querySelector('.cancel').addEventListener('click', () => this._closeConfirm());
|
||
confirm.querySelector('.danger').addEventListener('click', () => {
|
||
const i = this._confirmIndex;
|
||
this._closeConfirm();
|
||
this._deleteSlide(i);
|
||
});
|
||
|
||
this._root.append(style, rail, resize, stage, tapzones, overlay, menu, confirm);
|
||
this._canvas = canvas;
|
||
this._slot = slot;
|
||
this._overlay = overlay;
|
||
this._tapzones = tapzones;
|
||
this._rail = rail;
|
||
this._resize = resize;
|
||
this._menu = menu;
|
||
this._confirm = confirm;
|
||
this._countEl = overlay.querySelector('.current');
|
||
this._totalEl = overlay.querySelector('.total');
|
||
|
||
// Restore persisted rail width.
|
||
let rw = 188;
|
||
try {
|
||
const s = localStorage.getItem('deck-stage.railWidth');
|
||
if (s) rw = parseInt(s, 10) || rw;
|
||
} catch (err) {}
|
||
this._setRailWidth(rw);
|
||
this._syncRailHidden();
|
||
}
|
||
|
||
_setRailWidth(px) {
|
||
const w = Math.max(120, Math.min(360, Math.round(px)));
|
||
this._railPx = w;
|
||
this.style.setProperty('--deck-rail-w', w + 'px');
|
||
this._fit();
|
||
// _scaleThumbs forces a sync layout (frame.offsetWidth) then writes
|
||
// N transforms. During a resize drag this runs per-pointermove;
|
||
// coalesce to one per frame.
|
||
if (!this._scaleRaf) {
|
||
this._scaleRaf = requestAnimationFrame(() => {
|
||
this._scaleRaf = null;
|
||
this._scaleThumbs();
|
||
});
|
||
}
|
||
}
|
||
|
||
/** @page must live in the document stylesheet — it's a no-op inside
|
||
* shadow DOM. Inject/update a single <head> style tag so the print
|
||
* sheet matches the design size and Save-as-PDF yields one slide per
|
||
* page with no margins. */
|
||
_syncPrintPageRule() {
|
||
const id = 'deck-stage-print-page';
|
||
let tag = document.getElementById(id);
|
||
if (!tag) {
|
||
tag = document.createElement('style');
|
||
tag.id = id;
|
||
document.head.appendChild(tag);
|
||
}
|
||
tag.textContent =
|
||
'@page { size: ' + this.designWidth + 'px ' + this.designHeight + 'px; margin: 0; } ' +
|
||
'@media print { html, body { margin: 0 !important; padding: 0 !important; background: none !important; overflow: visible !important; height: auto !important; } ' +
|
||
'* { -webkit-print-color-adjust: exact; print-color-adjust: exact; } }';
|
||
}
|
||
|
||
_onSlotChange() {
|
||
// Rail mutations (delete/move) already reconcile synchronously and
|
||
// emit slidechange with reason 'api'; skip the async slotchange that
|
||
// would otherwise re-broadcast with reason 'init'.
|
||
if (this._squelchSlotChange) { this._squelchSlotChange = false; return; }
|
||
this._collectSlides();
|
||
this._restoreIndex();
|
||
this._applyIndex({ showOverlay: false, broadcast: true, reason: 'init' });
|
||
this._fit();
|
||
}
|
||
|
||
_collectSlides() {
|
||
const assigned = this._slot.assignedElements({ flatten: true });
|
||
this._slides = assigned.filter((el) => {
|
||
// Skip template/style/script nodes even if someone slots them.
|
||
const tag = el.tagName;
|
||
return tag !== 'TEMPLATE' && tag !== 'SCRIPT' && tag !== 'STYLE';
|
||
});
|
||
this._slideSet = new Set(this._slides);
|
||
|
||
this._slides.forEach((slide, i) => {
|
||
const n = i + 1;
|
||
slide.setAttribute('data-screen-label', `${pad2(n)} ${getSlideLabel(slide)}`);
|
||
|
||
// Validation attribute for comment flow / auto-checks.
|
||
if (!slide.hasAttribute('data-om-validate')) {
|
||
slide.setAttribute('data-om-validate', VALIDATE_ATTR);
|
||
}
|
||
|
||
slide.setAttribute('data-deck-slide', String(i));
|
||
});
|
||
|
||
if (this._totalEl) this._totalEl.textContent = String(this._slides.length || 1);
|
||
if (this._index >= this._slides.length) this._index = Math.max(0, this._slides.length - 1);
|
||
this._markLastVisible();
|
||
this._renderRail();
|
||
}
|
||
|
||
/** Tag the last non-skipped slide so print CSS can drop its
|
||
* break-after (see the @media print comment above — :last-child
|
||
* alone matches a hidden skipped slide). */
|
||
_markLastVisible() {
|
||
let last = null;
|
||
this._slides.forEach((s) => {
|
||
s.removeAttribute('data-deck-last-visible');
|
||
if (!s.hasAttribute('data-deck-skip')) last = s;
|
||
});
|
||
if (last) last.setAttribute('data-deck-last-visible', '');
|
||
}
|
||
|
||
_loadNotes() {
|
||
const tag = document.getElementById('speaker-notes');
|
||
if (!tag) { this._notes = []; return; }
|
||
try {
|
||
const parsed = JSON.parse(tag.textContent || '[]');
|
||
if (Array.isArray(parsed)) this._notes = parsed;
|
||
} catch (e) {
|
||
console.warn('[deck-stage] Failed to parse #speaker-notes JSON:', e);
|
||
this._notes = [];
|
||
}
|
||
}
|
||
|
||
_restoreIndex() {
|
||
// The host's ?slide= param is delivered as a #<int> hash (1-indexed) on
|
||
// the iframe src. No hash → slide 1; the deck itself keeps no position
|
||
// state across loads.
|
||
const h = (location.hash || '').match(/^#(\d+)$/);
|
||
if (h) {
|
||
const n = parseInt(h[1], 10) - 1;
|
||
if (n >= 0 && n < this._slides.length) this._index = n;
|
||
}
|
||
}
|
||
|
||
_applyIndex({ showOverlay = true, broadcast = true, reason = 'init' } = {}) {
|
||
if (!this._slides.length) return;
|
||
const prev = this._prevIndex == null ? -1 : this._prevIndex;
|
||
const curr = this._index;
|
||
// Keep the iframe's own hash in sync so an in-iframe location.reload()
|
||
// (reload banner path in viewer-handle.ts) lands on the current slide,
|
||
// not the stale deep-link hash from initial load.
|
||
try { history.replaceState(null, '', '#' + (curr + 1)); } catch (e) {}
|
||
this._slides.forEach((s, i) => {
|
||
if (i === curr) s.setAttribute('data-deck-active', '');
|
||
else s.removeAttribute('data-deck-active');
|
||
});
|
||
if (this._countEl) this._countEl.textContent = String(curr + 1);
|
||
// Follow-scroll on every navigation (init deep-link, keyboard, click,
|
||
// tap, external goTo) — the only time we *don't* want the rail to
|
||
// track current is after a rail-internal mutation, where _renderRail
|
||
// has already restored the user's scroll position and yanking back to
|
||
// current would undo it.
|
||
this._syncRail(reason !== 'mutation');
|
||
|
||
if (broadcast) {
|
||
// (1) Legacy: host-window postMessage for speaker-notes renderers.
|
||
try { window.postMessage({ slideIndexChanged: curr, deckTotal: this._slides.length, deckSkipped: this._skippedIndices() }, '*'); } catch (e) {}
|
||
|
||
// (2) In-page CustomEvent on the <deck-stage> element itself.
|
||
// Bubbles and composes out of shadow DOM so slide code can listen:
|
||
// document.querySelector('deck-stage').addEventListener('slidechange', e => {
|
||
// e.detail.index, e.detail.previousIndex, e.detail.total, e.detail.slide, e.detail.reason
|
||
// });
|
||
const detail = {
|
||
index: curr,
|
||
previousIndex: prev,
|
||
total: this._slides.length,
|
||
slide: this._slides[curr] || null,
|
||
previousSlide: prev >= 0 ? (this._slides[prev] || null) : null,
|
||
reason: reason, // 'init' | 'keyboard' | 'click' | 'tap' | 'api'
|
||
};
|
||
this.dispatchEvent(new CustomEvent('slidechange', {
|
||
detail,
|
||
bubbles: true,
|
||
composed: true,
|
||
}));
|
||
}
|
||
|
||
this._prevIndex = curr;
|
||
if (showOverlay) this._flashOverlay();
|
||
}
|
||
|
||
_flashOverlay() {
|
||
// Host posts __omelette_presenting while in fullscreen/tab presentation
|
||
// mode — suppress the nav footer entirely (both hover and slide-change
|
||
// flash) so the audience sees clean slides.
|
||
if (!this._overlay || this._presenting) return;
|
||
this._overlay.setAttribute('data-visible', '');
|
||
if (this._hideTimer) clearTimeout(this._hideTimer);
|
||
this._hideTimer = setTimeout(() => {
|
||
this._overlay.removeAttribute('data-visible');
|
||
}, OVERLAY_HIDE_MS);
|
||
}
|
||
|
||
_railWidth() {
|
||
// State-based, no offsetWidth: the first _fit() can run before the
|
||
// rail has had layout on some load paths, and a 0 there paints the
|
||
// slide full-width for one frame before the post-slotchange _fit()
|
||
// corrects it.
|
||
if (!this._railEnabled || !this._railVisible || this.hasAttribute('no-rail')
|
||
|| this.hasAttribute('noscale') || this._presenting || this._previewMode) return 0;
|
||
return this._railPx || 0;
|
||
}
|
||
|
||
_fit() {
|
||
if (!this._canvas) return;
|
||
const stage = this._canvas.parentElement;
|
||
// PPTX export sets noscale so the DOM capture sees authored-size
|
||
// geometry — the scaled canvas is in shadow DOM, so the exporter's
|
||
// resetTransformSelector can't reach .canvas.style.transform directly.
|
||
if (this.hasAttribute('noscale')) {
|
||
this._canvas.style.transform = 'none';
|
||
if (stage) stage.style.left = '0';
|
||
if (this._overlay) this._overlay.style.marginLeft = '0';
|
||
if (this._tapzones) this._tapzones.style.left = '0';
|
||
return;
|
||
}
|
||
const rw = this._railWidth();
|
||
if (stage) stage.style.left = rw + 'px';
|
||
// Overlay is centred on the viewport via left:50% + translate(-50%);
|
||
// marginLeft shifts the centre by rw/2 so it lands in the middle of
|
||
// the [rw, innerWidth] stage region. Tapzones just inset from rw.
|
||
if (this._overlay) this._overlay.style.marginLeft = (rw / 2) + 'px';
|
||
if (this._tapzones) this._tapzones.style.left = rw + 'px';
|
||
const vw = window.innerWidth - rw;
|
||
const vh = window.innerHeight;
|
||
const s = Math.min(vw / this.designWidth, vh / this.designHeight);
|
||
this._canvas.style.transform = `scale(${s})`;
|
||
}
|
||
|
||
_onResize() { this._fit(); }
|
||
|
||
_onMouseMove() {
|
||
// Keep overlay visible while mouse moves; hide after idle.
|
||
this._flashOverlay();
|
||
}
|
||
|
||
_onMessage(e) {
|
||
const d = e.data;
|
||
if (d && typeof d.__omelette_presenting === 'boolean') {
|
||
this._presenting = d.__omelette_presenting;
|
||
if (this._presenting && this._overlay) {
|
||
this._overlay.removeAttribute('data-visible');
|
||
if (this._hideTimer) clearTimeout(this._hideTimer);
|
||
}
|
||
this._syncRailHidden();
|
||
this._closeMenu();
|
||
this._closeConfirm();
|
||
this._fit();
|
||
this._scaleThumbs();
|
||
}
|
||
// Host's Preview segment (ViewerMode='none'): the rail's drag-reorder /
|
||
// right-click skip-delete affordances are editing chrome, so hide it
|
||
// while the user is just looking at the deck. Same hard-hide path as
|
||
// presenting; independent of the user's _railVisible preference so
|
||
// returning to Edit restores whatever they had.
|
||
if (d && typeof d.__omelette_preview_mode === 'boolean') {
|
||
if (d.__omelette_preview_mode === this._previewMode) return;
|
||
this._previewMode = d.__omelette_preview_mode;
|
||
this._syncRailHidden();
|
||
this._closeMenu();
|
||
this._closeConfirm();
|
||
this._fit();
|
||
this._scaleThumbs();
|
||
}
|
||
// Per-viewer show/hide, driven by the TweaksPanel's auto-injected
|
||
// "Thumbnail rail" toggle (or any author script). Independent of
|
||
// whether the Tweaks panel itself is open — closing the panel
|
||
// doesn't change rail visibility. Persists alongside rail width.
|
||
if (d && d.type === '__deck_rail_visible' && typeof d.on === 'boolean') {
|
||
if (d.on === this._railVisible) return;
|
||
this._railVisible = d.on;
|
||
try { localStorage.setItem('deck-stage.railVisible', d.on ? '1' : '0'); } catch (e) {}
|
||
// Arm the transition, commit it, then flip state — otherwise the
|
||
// browser coalesces both writes and nothing animates on show.
|
||
this.setAttribute('data-rail-anim', '');
|
||
void (this._rail && this._rail.offsetHeight);
|
||
this._syncRailHidden();
|
||
this._fit();
|
||
this._scaleThumbs();
|
||
clearTimeout(this._railAnimTimer);
|
||
this._railAnimTimer = setTimeout(() => this.removeAttribute('data-rail-anim'), 220);
|
||
}
|
||
if (d && d.type === '__omelette_rail_enabled') this._enableRail();
|
||
}
|
||
|
||
_syncRailHidden() {
|
||
if (!this._rail) return;
|
||
// data-presenting is the hard hide (display:none) for flag-off,
|
||
// presentation mode, and the host's Preview segment — instant, no
|
||
// transition. data-user-hidden is the soft hide (translateX(-100%))
|
||
// for the viewer's rail toggle, so show/hide slides under
|
||
// :host([data-rail-anim]).
|
||
const hard = !this._railEnabled || this._presenting || this._previewMode;
|
||
if (hard) this._rail.setAttribute('data-presenting', '');
|
||
else this._rail.removeAttribute('data-presenting');
|
||
if (!this._railVisible) this._rail.setAttribute('data-user-hidden', '');
|
||
else this._rail.removeAttribute('data-user-hidden');
|
||
// translateX hide leaves thumbs (tabIndex=0) in the tab order —
|
||
// inert keeps them unfocusable while the rail is off-screen.
|
||
this._rail.inert = hard || !this._railVisible;
|
||
}
|
||
|
||
_onTapBack(e) {
|
||
e.preventDefault();
|
||
this._advance(-1, 'tap');
|
||
}
|
||
|
||
_onTapForward(e) {
|
||
e.preventDefault();
|
||
this._advance(1, 'tap');
|
||
}
|
||
|
||
_onKey(e) {
|
||
// Ignore when the user is typing.
|
||
const t = e.target;
|
||
if (t && (t.isContentEditable || /^(INPUT|TEXTAREA|SELECT)$/.test(t.tagName))) return;
|
||
// Confirm dialog swallows nav keys while open; Escape cancels. Enter
|
||
// is left to the focused button's native activation so Tab→Cancel
|
||
// →Enter activates Cancel, not the window-level confirm path.
|
||
if (this._confirm && this._confirm.hasAttribute('data-open')) {
|
||
if (e.key === 'Escape') { this._closeConfirm(); e.preventDefault(); }
|
||
return;
|
||
}
|
||
if (e.key === 'Escape' && this._menu && this._menu.hasAttribute('data-open')) {
|
||
this._closeMenu();
|
||
e.preventDefault();
|
||
return;
|
||
}
|
||
if (e.metaKey || e.ctrlKey || e.altKey) return;
|
||
|
||
const key = e.key;
|
||
let handled = true;
|
||
|
||
if (key === 'ArrowRight' || key === 'PageDown' || key === ' ' || key === 'Spacebar') {
|
||
this._advance(1, 'keyboard');
|
||
} else if (key === 'ArrowLeft' || key === 'PageUp') {
|
||
this._advance(-1, 'keyboard');
|
||
} else if (key === 'Home') {
|
||
this._go(0, 'keyboard');
|
||
} else if (key === 'End') {
|
||
this._go(this._slides.length - 1, 'keyboard');
|
||
} else if (key === 'r' || key === 'R') {
|
||
this._go(0, 'keyboard');
|
||
} else if (/^[0-9]$/.test(key)) {
|
||
// 1..9 jump to that slide; 0 jumps to 10.
|
||
const n = key === '0' ? 9 : parseInt(key, 10) - 1;
|
||
if (n < this._slides.length) this._go(n, 'keyboard');
|
||
} else {
|
||
handled = false;
|
||
}
|
||
|
||
if (handled) {
|
||
e.preventDefault();
|
||
this._flashOverlay();
|
||
}
|
||
}
|
||
|
||
_go(i, reason = 'api') {
|
||
if (!this._slides.length) return;
|
||
const clamped = Math.max(0, Math.min(this._slides.length - 1, i));
|
||
if (clamped === this._index) {
|
||
this._flashOverlay();
|
||
return;
|
||
}
|
||
this._index = clamped;
|
||
this._applyIndex({ showOverlay: true, broadcast: true, reason });
|
||
}
|
||
|
||
/** Step forward/back skipping any slide marked data-deck-skip. Falls
|
||
* back to _go's clamp-at-ends behaviour (flash overlay) when there's
|
||
* nothing further in that direction. */
|
||
_advance(dir, reason) {
|
||
if (!this._slides.length) return;
|
||
let i = this._index + dir;
|
||
while (i >= 0 && i < this._slides.length && this._slides[i].hasAttribute('data-deck-skip')) {
|
||
i += dir;
|
||
}
|
||
if (i < 0 || i >= this._slides.length) { this._flashOverlay(); return; }
|
||
this._go(i, reason);
|
||
}
|
||
|
||
// ── Thumbnail rail ────────────────────────────────────────────────────
|
||
//
|
||
// Thumbs are keyed by slide element and reused across _renderRail()
|
||
// calls, so a reorder/delete is an O(changed) DOM shuffle instead of an
|
||
// O(N) teardown-and-re-clone. Each thumb starts as a lightweight shell
|
||
// (num + empty frame); the clone is materialized lazily by an
|
||
// IntersectionObserver when the frame scrolls into (or near) view, so
|
||
// only visible-ish slides pay the clone + image-decode cost.
|
||
|
||
_renderRail() {
|
||
if (!this._rail || !this._railEnabled) { this._thumbs = []; return; }
|
||
// FLIP: record each *materialized* thumb's top before the reconcile.
|
||
// Off-screen (non-materialized) thumbs don't need the animation and
|
||
// skipping their getBoundingClientRect saves a forced layout per
|
||
// off-screen thumb on large decks.
|
||
const prevTops = new Map();
|
||
(this._thumbs || []).forEach(({ thumb, slide, host }) => {
|
||
if (host) prevTops.set(slide, thumb.getBoundingClientRect().top);
|
||
});
|
||
const st = this._rail.scrollTop;
|
||
|
||
// Reconcile: reuse thumbs that already exist for a slide, create
|
||
// shells for new slides, drop thumbs for removed slides.
|
||
const bySlide = new Map();
|
||
(this._thumbs || []).forEach((t) => bySlide.set(t.slide, t));
|
||
const next = [];
|
||
this._slides.forEach((slide) => {
|
||
let t = bySlide.get(slide);
|
||
if (t) bySlide.delete(slide);
|
||
else t = this._makeThumb(slide);
|
||
next.push(t);
|
||
});
|
||
// Orphans — slides removed since last render.
|
||
bySlide.forEach((t) => {
|
||
if (this._railObserver) this._railObserver.unobserve(t.frame);
|
||
t.thumb.remove();
|
||
});
|
||
// Put thumbs into document order to match _slides. insertBefore on
|
||
// an already-correctly-placed node is a no-op, so this is cheap
|
||
// when nothing moved.
|
||
next.forEach((t, i) => {
|
||
const want = t.thumb;
|
||
const at = this._rail.children[i];
|
||
if (at !== want) this._rail.insertBefore(want, at || null);
|
||
t.i = i;
|
||
t.num.textContent = String(i + 1);
|
||
if (t.slide.hasAttribute('data-deck-skip')) t.thumb.setAttribute('data-skip', '');
|
||
else t.thumb.removeAttribute('data-skip');
|
||
});
|
||
this._thumbs = next;
|
||
|
||
this._rail.scrollTop = st;
|
||
if (prevTops.size) {
|
||
const moved = [];
|
||
this._thumbs.forEach(({ thumb, slide }) => {
|
||
const old = prevTops.get(slide);
|
||
if (old == null) return;
|
||
const dy = old - thumb.getBoundingClientRect().top;
|
||
if (Math.abs(dy) < 1) return;
|
||
thumb.style.transition = 'none';
|
||
thumb.style.transform = `translateY(${dy}px)`;
|
||
moved.push(thumb);
|
||
});
|
||
if (moved.length) {
|
||
// Commit the inverted positions before flipping the transition
|
||
// on — otherwise the browser coalesces both style writes and
|
||
// nothing animates.
|
||
void this._rail.offsetHeight;
|
||
moved.forEach((t) => {
|
||
t.style.transition = 'transform 180ms cubic-bezier(.2,.7,.3,1)';
|
||
t.style.transform = '';
|
||
});
|
||
setTimeout(() => moved.forEach((t) => { t.style.transition = ''; }), 220);
|
||
}
|
||
}
|
||
requestAnimationFrame(() => this._scaleThumbs());
|
||
this._syncRail(false);
|
||
}
|
||
|
||
/** Create a lightweight thumb shell for one slide. The clone is
|
||
* materialized later by the IntersectionObserver. Event handlers
|
||
* look up the thumb's *current* index (via _thumbs.indexOf) so the
|
||
* same element can be reused across reorders. */
|
||
_makeThumb(slide) {
|
||
const thumb = document.createElement('div');
|
||
thumb.className = 'thumb';
|
||
thumb.tabIndex = 0;
|
||
const num = document.createElement('div');
|
||
num.className = 'num';
|
||
const frame = document.createElement('div');
|
||
frame.className = 'frame';
|
||
thumb.append(num, frame);
|
||
|
||
const entry = { thumb, num, frame, slide, clone: null, host: null, i: -1 };
|
||
// entry.i is refreshed on every _renderRail reconcile pass, so
|
||
// handlers read the thumb's current position without an O(N) scan.
|
||
const idx = () => entry.i;
|
||
|
||
thumb.addEventListener('click', () => this._go(idx(), 'click'));
|
||
// ↑/↓ step through the rail when a thumb has focus. _go clamps at the
|
||
// ends and _applyIndex→_syncRail scrolls the new current thumb into
|
||
// view; we move focus to it (preventScroll — _syncRail already
|
||
// scrolled) so a held key walks the whole list. stopPropagation keeps
|
||
// this out of the window-level _onKey nav handler.
|
||
thumb.addEventListener('keydown', (e) => {
|
||
if (e.key !== 'ArrowUp' && e.key !== 'ArrowDown') return;
|
||
if (e.metaKey || e.ctrlKey || e.altKey) return;
|
||
e.preventDefault();
|
||
e.stopPropagation();
|
||
this._go(idx() + (e.key === 'ArrowDown' ? 1 : -1), 'keyboard');
|
||
const cur = this._thumbs && this._thumbs[this._index];
|
||
if (cur) cur.thumb.focus({ preventScroll: true });
|
||
});
|
||
thumb.addEventListener('contextmenu', (e) => {
|
||
e.preventDefault();
|
||
this._openMenu(idx(), e.clientX, e.clientY);
|
||
});
|
||
thumb.draggable = true;
|
||
thumb.addEventListener('dragstart', (e) => {
|
||
this._dragFrom = idx();
|
||
thumb.setAttribute('data-dragging', '');
|
||
e.dataTransfer.effectAllowed = 'move';
|
||
try { e.dataTransfer.setData('text/plain', String(this._dragFrom)); } catch (err) {}
|
||
});
|
||
thumb.addEventListener('dragend', () => {
|
||
thumb.removeAttribute('data-dragging');
|
||
this._clearDrop();
|
||
this._dragFrom = null;
|
||
});
|
||
thumb.addEventListener('dragover', (e) => {
|
||
if (this._dragFrom == null) return;
|
||
e.preventDefault();
|
||
e.dataTransfer.dropEffect = 'move';
|
||
const r = thumb.getBoundingClientRect();
|
||
this._setDrop(idx(), e.clientY < r.top + r.height / 2 ? 'before' : 'after');
|
||
});
|
||
thumb.addEventListener('drop', (e) => {
|
||
if (this._dragFrom == null) return;
|
||
e.preventDefault();
|
||
const i = idx();
|
||
const r = thumb.getBoundingClientRect();
|
||
let to = e.clientY >= r.top + r.height / 2 ? i + 1 : i;
|
||
if (this._dragFrom < to) to--;
|
||
const from = this._dragFrom;
|
||
this._clearDrop();
|
||
this._dragFrom = null;
|
||
if (to !== from) this._moveSlide(from, to);
|
||
});
|
||
|
||
if (this._railObserver) this._railObserver.observe(frame);
|
||
frame.__deckThumb = entry;
|
||
return entry;
|
||
}
|
||
|
||
/** Lazily build the clone for a thumb that has scrolled into view. */
|
||
_materialize(entry) {
|
||
if (entry.host) return;
|
||
const dw = this.designWidth, dh = this.designHeight;
|
||
let clone = entry.slide.cloneNode(true);
|
||
clone.removeAttribute('id');
|
||
clone.removeAttribute('data-deck-active');
|
||
clone.querySelectorAll('[id]').forEach((el) => el.removeAttribute('id'));
|
||
// Neuter heavy media; replace <video> with its poster so the box
|
||
// keeps a visual. <iframe>/<audio> become empty placeholders.
|
||
clone.querySelectorAll('iframe, audio, object, embed').forEach((el) => {
|
||
el.removeAttribute('src');
|
||
el.removeAttribute('srcdoc');
|
||
el.removeAttribute('data');
|
||
el.innerHTML = '';
|
||
});
|
||
clone.querySelectorAll('video').forEach((el) => {
|
||
if (!el.poster) { el.removeAttribute('src'); el.innerHTML = ''; return; }
|
||
const img = document.createElement('img');
|
||
img.src = el.poster;
|
||
img.alt = '';
|
||
img.style.cssText = el.style.cssText + ';object-fit:cover;width:100%;height:100%;';
|
||
img.className = el.className;
|
||
el.replaceWith(img);
|
||
});
|
||
// Images: defer decode and let the browser pick the smallest
|
||
// srcset candidate for the ~140px thumb. Same-URL clones reuse the
|
||
// slide's decoded bitmap (URL-keyed cache), so the remaining cost
|
||
// is paint/composite — lazy+async keeps that off the main thread.
|
||
clone.querySelectorAll('img').forEach((el) => {
|
||
el.loading = 'lazy';
|
||
el.decoding = 'async';
|
||
if (el.srcset) el.sizes = (this._railPx || 188) + 'px';
|
||
});
|
||
// Custom elements inside the slide would have their
|
||
// connectedCallback fire when the clone is appended. Replace them
|
||
// with inert boxes so a component-heavy deck doesn't run N copies
|
||
// of each component's mount logic in the rail. Children are
|
||
// preserved so layout-wrapper elements (<my-column><h2>…</h2>)
|
||
// still show their authored content; the querySelectorAll NodeList
|
||
// is static, so nested custom elements in the moved subtree are
|
||
// still visited on later iterations.
|
||
const neuter = (el) => {
|
||
const box = document.createElement('div');
|
||
box.style.cssText = (el.getAttribute('style') || '') +
|
||
';background:rgba(0,0,0,0.06);border:1px dashed rgba(0,0,0,0.15);';
|
||
box.className = el.className;
|
||
// Preserve theming/i18n hooks so [data-*] / :lang() / [dir]
|
||
// descendant selectors still match the neutered root.
|
||
for (const a of el.attributes) {
|
||
const n = a.name;
|
||
if (n.startsWith('data-') || n.startsWith('aria-') ||
|
||
n === 'lang' || n === 'dir' || n === 'role' || n === 'title') {
|
||
box.setAttribute(n, a.value);
|
||
}
|
||
}
|
||
while (el.firstChild) box.appendChild(el.firstChild);
|
||
return box;
|
||
};
|
||
// querySelectorAll('*') returns descendants only — a custom-element
|
||
// slide root (<my-slide>…</my-slide>) would slip through and upgrade
|
||
// on append. Swap the root first.
|
||
if (clone.tagName.includes('-')) clone = neuter(clone);
|
||
clone.querySelectorAll('*').forEach((el) => {
|
||
if (el.tagName.includes('-')) el.replaceWith(neuter(el));
|
||
});
|
||
clone.style.cssText += ';position:absolute;top:0;left:0;transform-origin:0 0;' +
|
||
'pointer-events:none;width:' + dw + 'px;height:' + dh + 'px;' +
|
||
'box-sizing:border-box;overflow:hidden;visibility:visible;opacity:1;';
|
||
const host = document.createElement('div');
|
||
host.style.cssText = 'position:absolute;inset:0;';
|
||
this._syncThumbHostAttrs(host);
|
||
const sr = host.attachShadow({ mode: 'open' });
|
||
if (this._adoptedSheet) sr.adoptedStyleSheets = [this._adoptedSheet];
|
||
else {
|
||
const st = document.createElement('style');
|
||
st.textContent = this._authorCss || '';
|
||
sr.appendChild(st);
|
||
}
|
||
sr.appendChild(clone);
|
||
entry.frame.appendChild(host);
|
||
entry.host = host;
|
||
entry.clone = clone;
|
||
if (this._thumbScale) clone.style.transform = 'scale(' + this._thumbScale + ')';
|
||
// Once materialized the IO callback is a no-op early-return —
|
||
// unobserve so scroll doesn't keep firing it.
|
||
if (this._railObserver) this._railObserver.unobserve(entry.frame);
|
||
}
|
||
|
||
/** Re-clone a single thumb (live-update path). No-op if the thumb
|
||
* hasn't been materialized yet — it'll pick up current content when
|
||
* it scrolls into view. */
|
||
_refreshThumb(slide) {
|
||
const entry = (this._thumbs || []).find((t) => t.slide === slide);
|
||
if (!entry || !entry.host) return;
|
||
entry.host.remove();
|
||
entry.host = entry.clone = null;
|
||
this._materialize(entry);
|
||
}
|
||
|
||
_scaleThumbs() {
|
||
if (!this._thumbs || !this._thumbs.length) return;
|
||
// Every frame is the same width; if it reads 0 the rail is
|
||
// display:none (noscale / no-rail / presenting / print) — leave the
|
||
// clones as-is and re-run when the rail is revealed.
|
||
const fw = this._thumbs[0].frame.offsetWidth;
|
||
if (!fw) return;
|
||
this._thumbScale = fw / this.designWidth;
|
||
this._thumbs.forEach(({ clone }) => {
|
||
if (clone) clone.style.transform = 'scale(' + this._thumbScale + ')';
|
||
});
|
||
}
|
||
|
||
_setDrop(i, where) {
|
||
// dragover fires at pointer-event rate; touch only the previous
|
||
// and new target rather than sweeping all N thumbs.
|
||
const t = this._thumbs && this._thumbs[i];
|
||
if (this._dropOn && this._dropOn !== t) {
|
||
this._dropOn.thumb.removeAttribute('data-drop');
|
||
}
|
||
if (t) t.thumb.setAttribute('data-drop', where);
|
||
this._dropOn = t || null;
|
||
}
|
||
|
||
_clearDrop() {
|
||
if (this._dropOn) this._dropOn.thumb.removeAttribute('data-drop');
|
||
this._dropOn = null;
|
||
}
|
||
|
||
_syncRail(follow) {
|
||
if (!this._thumbs) return;
|
||
this._thumbs.forEach(({ thumb }, i) => {
|
||
if (i === this._index) {
|
||
thumb.setAttribute('data-current', '');
|
||
if (follow && typeof thumb.scrollIntoView === 'function') {
|
||
thumb.scrollIntoView({ block: 'nearest' });
|
||
}
|
||
} else {
|
||
thumb.removeAttribute('data-current');
|
||
}
|
||
});
|
||
}
|
||
|
||
_openMenu(i, x, y) {
|
||
if (!this._menu) return;
|
||
this._menuIndex = i;
|
||
const slide = this._slides[i];
|
||
const skip = slide && slide.hasAttribute('data-deck-skip');
|
||
this._menu.querySelector('[data-act="skip"]').textContent = skip ? 'Unskip slide' : 'Skip slide';
|
||
this._menu.querySelector('[data-act="up"]').disabled = i <= 0;
|
||
this._menu.querySelector('[data-act="down"]').disabled = i >= this._slides.length - 1;
|
||
this._menu.querySelector('[data-act="delete"]').disabled = this._slides.length <= 1;
|
||
// Place, then clamp to viewport after it's measurable.
|
||
this._menu.style.left = x + 'px';
|
||
this._menu.style.top = y + 'px';
|
||
this._menu.setAttribute('data-open', '');
|
||
const r = this._menu.getBoundingClientRect();
|
||
const nx = Math.min(x, window.innerWidth - r.width - 4);
|
||
const ny = Math.min(y, window.innerHeight - r.height - 4);
|
||
this._menu.style.left = Math.max(4, nx) + 'px';
|
||
this._menu.style.top = Math.max(4, ny) + 'px';
|
||
}
|
||
|
||
_closeMenu() {
|
||
if (this._menu) this._menu.removeAttribute('data-open');
|
||
this._menuIndex = -1;
|
||
}
|
||
|
||
_openConfirm(i) {
|
||
if (!this._confirm) return;
|
||
this._confirmIndex = i;
|
||
this._confirm.querySelector('.title').textContent = 'Delete slide ' + (i + 1) + '?';
|
||
this._confirm.setAttribute('data-open', '');
|
||
const btn = this._confirm.querySelector('.danger');
|
||
if (btn && btn.focus) btn.focus();
|
||
}
|
||
|
||
_closeConfirm() {
|
||
if (this._confirm) this._confirm.removeAttribute('data-open');
|
||
this._confirmIndex = -1;
|
||
}
|
||
|
||
_emitDeckChange(detail) {
|
||
this.dispatchEvent(new CustomEvent('deckchange', {
|
||
detail, bubbles: true, composed: true,
|
||
}));
|
||
}
|
||
|
||
_deleteSlide(i) {
|
||
const slide = this._slides[i];
|
||
if (!slide || this._slides.length <= 1) return;
|
||
const wasCurrent = i === this._index;
|
||
if (i < this._index || (wasCurrent && i === this._slides.length - 1)) this._index--;
|
||
this._squelchSlotChange = true;
|
||
slide.remove();
|
||
this._emitDeckChange({ action: 'delete', from: i, slide });
|
||
this._collectSlides();
|
||
this._applyIndex({ showOverlay: true, broadcast: true, reason: 'mutation' });
|
||
}
|
||
|
||
_toggleSkip(i) {
|
||
const slide = this._slides[i];
|
||
if (!slide) return;
|
||
const on = !slide.hasAttribute('data-deck-skip');
|
||
if (on) slide.setAttribute('data-deck-skip', '');
|
||
else slide.removeAttribute('data-deck-skip');
|
||
if (this._thumbs && this._thumbs[i]) {
|
||
if (on) this._thumbs[i].thumb.setAttribute('data-skip', '');
|
||
else this._thumbs[i].thumb.removeAttribute('data-skip');
|
||
}
|
||
this._markLastVisible();
|
||
this._emitDeckChange({ action: on ? 'skip' : 'unskip', from: i, slide });
|
||
// Re-broadcast so the presenter popup's prev/next thumbnails re-pick
|
||
// the nearest non-skipped slide without waiting for a nav event.
|
||
try { window.postMessage({ slideIndexChanged: this._index, deckTotal: this._slides.length, deckSkipped: this._skippedIndices() }, '*'); } catch (e) {}
|
||
}
|
||
|
||
_skippedIndices() {
|
||
const out = [];
|
||
for (let i = 0; i < this._slides.length; i++) {
|
||
if (this._slides[i].hasAttribute('data-deck-skip')) out.push(i);
|
||
}
|
||
return out;
|
||
}
|
||
|
||
_moveSlide(i, j) {
|
||
if (j < 0 || j >= this._slides.length || j === i) return;
|
||
const slide = this._slides[i];
|
||
const ref = j < i ? this._slides[j] : this._slides[j].nextSibling;
|
||
// Track the active slide across the reorder so the same content
|
||
// stays on screen.
|
||
const cur = this._index;
|
||
if (cur === i) this._index = j;
|
||
else if (i < cur && j >= cur) this._index = cur - 1;
|
||
else if (i > cur && j <= cur) this._index = cur + 1;
|
||
this._squelchSlotChange = true;
|
||
this.insertBefore(slide, ref);
|
||
this._emitDeckChange({ action: 'move', from: i, to: j, slide });
|
||
this._collectSlides();
|
||
this._applyIndex({ showOverlay: false, broadcast: true, reason: 'mutation' });
|
||
}
|
||
|
||
// Public API ------------------------------------------------------------
|
||
|
||
/** Current slide index (0-based). */
|
||
get index() { return this._index; }
|
||
/** Total slide count. */
|
||
get length() { return this._slides.length; }
|
||
/** Programmatically navigate. */
|
||
goTo(i) { this._go(i, 'api'); }
|
||
next() { this._advance(1, 'api'); }
|
||
prev() { this._advance(-1, 'api'); }
|
||
reset() { this._go(0, 'api'); }
|
||
}
|
||
|
||
if (!customElements.get('deck-stage')) {
|
||
customElements.define('deck-stage', DeckStage);
|
||
}
|
||
})();
|