Initial commit
This commit is contained in:
admin
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<!doctype html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<title>Pinkudex — Pagination behavior options (functional)</title>
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<style>
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:root {
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--bg-0: #0b0d10;
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--bg-1: #14171c;
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--bg-2: #1c2027;
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--fg: #e6e8ec;
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--fg-dim: #a4abb6;
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--fg-muted: #6b7380;
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--cyan: #22d3ee;
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--mint: #34d399;
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--amber: #fbbf24;
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--coral: #f87171;
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--violet: #a78bfa;
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--glass: rgba(255,255,255,0.04);
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--glass-border: rgba(255,255,255,0.10);
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--glass-border-strong: rgba(255,255,255,0.18);
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}
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* { box-sizing: border-box; }
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html, body { margin: 0; padding: 0; }
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body {
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background: var(--bg-0);
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color: var(--fg);
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font: 14px/1.5 ui-sans-serif, system-ui, -apple-system, "Segoe UI";
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min-height: 100vh;
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}
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.page { max-width: 1100px; margin: 0 auto; padding: 24px; }
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header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 20px; gap: 24px; }
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h1 { font-weight: 500; font-size: 20px; margin: 0 0 4px; }
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.sub { color: var(--fg-muted); font-size: 13px; }
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.modes {
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display: flex; gap: 4px; padding: 4px;
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background: var(--bg-1); border: 1px solid var(--glass-border);
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border-radius: 10px;
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}
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.modes button {
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background: transparent; border: 0; color: var(--fg-dim);
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font-family: inherit; font-size: 12px; font-weight: 500;
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padding: 8px 14px; border-radius: 7px; cursor: pointer;
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transition: background 120ms, color 120ms;
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}
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.modes button:hover { color: var(--fg); }
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.modes button.active {
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background: rgba(34,211,238,0.15);
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color: var(--cyan);
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box-shadow: inset 0 0 0 1px rgba(34,211,238,0.4);
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}
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/* Hud panel */
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.hud {
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display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
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background: var(--bg-1); border: 1px solid var(--glass-border);
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border-radius: 12px; padding: 14px 16px; margin-bottom: 14px;
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font-family: ui-monospace, "SF Mono", monospace; font-size: 12px;
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}
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.hud .item { display: flex; flex-direction: column; gap: 4px; }
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.hud .label { color: var(--fg-muted); font-size: 10px; text-transform: uppercase; letter-spacing: 0.08em; }
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.hud .value { color: var(--fg); font-weight: 500; }
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.hud .value .accent { color: var(--cyan); }
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.description {
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background: var(--bg-1); border: 1px solid var(--glass-border);
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border-radius: 12px; padding: 14px 16px; margin-bottom: 14px;
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font-size: 13px; color: var(--fg-dim); line-height: 1.55;
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}
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.description b { color: var(--fg); }
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/* Event log */
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.log {
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background: rgba(0,0,0,0.35); border: 1px solid var(--glass-border);
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border-radius: 10px; padding: 10px 12px; margin-bottom: 14px;
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font-family: ui-monospace, "SF Mono", monospace; font-size: 11.5px;
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height: 110px; overflow-y: auto;
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}
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.log .line { padding: 1px 0; color: var(--fg-dim); }
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.log .line .t { color: var(--fg-muted); margin-right: 8px; }
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.log .line .k { font-weight: 600; margin-right: 8px; }
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.log .line .k.url { color: var(--coral); }
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.log .line .k.scroll { color: var(--mint); }
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.log .line .k.fetch { color: var(--amber); }
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.log .line .k.click { color: var(--cyan); }
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.log .line .k.remount { color: var(--violet); }
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.log .line .k.note { color: var(--fg-muted); }
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/* Grid viewport — emulates a virtualized scroll area */
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.viewport {
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background: var(--bg-1); border: 1px solid var(--glass-border);
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border-radius: 14px; height: 540px; overflow-y: auto;
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scroll-behavior: smooth;
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position: relative;
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}
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.viewport-inner { padding: 16px; }
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.grid {
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display: grid; grid-template-columns: repeat(5, 1fr);
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gap: 8px;
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}
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.card {
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aspect-ratio: 0.7; border-radius: 8px;
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background: linear-gradient(135deg, var(--bg-2), #232831);
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border: 1px solid var(--glass-border);
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display: flex; flex-direction: column; justify-content: flex-end;
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padding: 6px 8px;
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font-family: ui-monospace, monospace; font-size: 10px;
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color: var(--fg-muted);
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position: relative;
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overflow: hidden;
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animation: fadeIn 200ms ease-out both;
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}
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.card::before {
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content: ""; position: absolute; inset: 0;
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background: radial-gradient(circle at 30% 30%, rgba(34,211,238,0.06), transparent 60%);
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}
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.card.flash { animation: flashCard 600ms ease-out; }
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@keyframes flashCard {
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0% { box-shadow: inset 0 0 0 2px var(--cyan); }
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100% { box-shadow: inset 0 0 0 0 transparent; }
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}
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@keyframes fadeIn {
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from { opacity: 0; transform: translateY(4px); }
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to { opacity: 1; transform: none; }
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}
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.page-marker {
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grid-column: 1 / -1;
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margin: 18px 0 8px;
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padding: 6px 10px;
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border-radius: 6px;
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background: rgba(34,211,238,0.06);
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border-left: 3px solid var(--cyan);
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font-family: ui-monospace, monospace; font-size: 11px;
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color: var(--cyan); font-weight: 600;
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text-transform: uppercase; letter-spacing: 0.08em;
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}
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.page-marker.current { background: rgba(34,211,238,0.14); }
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/* Pagination bar */
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.bar {
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display: flex; justify-content: center; align-items: center; gap: 10px;
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margin-top: 16px; padding: 12px;
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background: var(--bg-1); border: 1px solid var(--glass-border);
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border-radius: 12px;
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}
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.bar button {
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font-family: inherit; font-size: 13px; padding: 7px 14px;
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border-radius: 8px; border: 1px solid var(--glass-border-strong);
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background: var(--glass); color: var(--fg); cursor: pointer;
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display: inline-flex; align-items: center; gap: 6px;
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transition: background 120ms;
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}
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.bar button:hover:not(:disabled) { background: rgba(255,255,255,0.07); }
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.bar button:disabled { opacity: 0.35; cursor: not-allowed; }
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.bar .label {
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font-family: ui-monospace, monospace; font-size: 13px;
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color: var(--fg-dim); padding: 0 14px; min-width: 200px; text-align: center;
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}
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.bar .label .num { color: var(--cyan); font-weight: 600; }
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.bar .jump {
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margin-left: 8px; display: inline-flex; align-items: center; gap: 6px;
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}
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.bar .jump input {
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width: 56px; padding: 6px 8px; border-radius: 6px;
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border: 1px solid var(--glass-border-strong);
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background: var(--bg-0); color: var(--fg);
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font-family: ui-monospace, monospace; font-size: 12px; text-align: center;
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outline: none;
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}
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.bar .jump input:focus { border-color: var(--cyan); }
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.load-more {
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width: 100%; margin-top: 10px;
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padding: 10px; border-radius: 8px;
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background: rgba(52,211,153,0.08); color: var(--mint);
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border: 1px dashed rgba(52,211,153,0.4); cursor: pointer;
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font-family: inherit; font-size: 12px;
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text-transform: uppercase; letter-spacing: 0.08em; font-weight: 600;
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transition: background 120ms;
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}
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.load-more:hover { background: rgba(52,211,153,0.14); }
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.load-more:disabled { opacity: 0.3; cursor: not-allowed; }
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.toast {
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position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
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background: var(--bg-2); border: 1px solid var(--glass-border-strong);
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border-radius: 10px; padding: 8px 14px;
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font-family: ui-monospace, monospace; font-size: 12px; color: var(--fg);
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box-shadow: 0 10px 40px rgba(0,0,0,0.5);
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opacity: 0; pointer-events: none;
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transition: opacity 200ms, transform 200ms;
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z-index: 100;
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}
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.toast.show { opacity: 1; transform: translateX(-50%) translateY(-4px); }
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.toast .tag {
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display: inline-block; padding: 1px 6px; border-radius: 4px;
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font-size: 10px; text-transform: uppercase; letter-spacing: 0.05em;
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margin-right: 8px; font-weight: 700;
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}
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.toast.url .tag { background: rgba(248,113,113,0.2); color: var(--coral); }
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.toast.scroll .tag { background: rgba(52,211,153,0.2); color: var(--mint); }
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.toast.fetch .tag { background: rgba(251,191,36,0.2); color: var(--amber); }
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.remount-flash {
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position: absolute; inset: 0; pointer-events: none;
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background: rgba(248,113,113,0.08);
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opacity: 0; transition: opacity 120ms;
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}
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.remount-flash.on { opacity: 1; }
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</style>
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</head>
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<body>
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<div class="page">
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<header>
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<div>
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<h1>Pagination behavior — functional comparison</h1>
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<div class="sub">Click <b>Prev / Next / Jump</b> with each mode active and watch the HUD + event log.</div>
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</div>
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<div class="modes" role="tablist">
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<button id="mode-1" class="active">1 · Always URL</button>
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<button id="mode-2">2 · Scroll + prefetch</button>
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<button id="mode-3">3 · Two affordances</button>
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</div>
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</header>
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<div class="hud">
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<div class="item">
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<span class="label">URL</span>
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<span class="value" id="hud-url">/?page=1</span>
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</div>
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<div class="item">
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<span class="label">Logical page</span>
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<span class="value"><span class="accent" id="hud-page">1</span> / <span id="hud-total">12</span></span>
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</div>
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<div class="item">
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<span class="label">Loaded buffer</span>
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<span class="value">page <span id="hud-buf-lo">1</span> – <span id="hud-buf-hi">1</span></span>
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</div>
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<div class="item">
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<span class="label">DOM cards</span>
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<span class="value" id="hud-card-count">25</span>
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</div>
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</div>
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<div class="description" id="mode-desc"></div>
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<div class="log" id="log"></div>
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<div class="viewport" id="viewport">
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<div class="remount-flash" id="remount-flash"></div>
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<div class="viewport-inner" id="viewport-inner"></div>
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</div>
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<div class="bar">
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<button id="prev-btn">← Prev</button>
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<span class="label">Page <span class="num" id="bar-page">1</span> of <span id="bar-total">12</span></span>
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<button id="next-btn">Next →</button>
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<form class="jump" id="jump-form" onsubmit="return false;">
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<span style="color: var(--fg-muted); font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em;">Jump</span>
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<input id="jump-input" type="text" inputmode="numeric" placeholder="1-12">
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<button type="submit">→</button>
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</form>
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</div>
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<button class="load-more" id="load-more" style="display: none;">↓ Load more (extend buffer)</button>
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</div>
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<div class="toast" id="toast"></div>
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<script>
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// ---------- model ----------
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const TOTAL_PAGES = 12;
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const PAGE_SIZE = 25; // cards per page (5×5)
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const FETCH_LATENCY_MS = 280;
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let mode = 1; // 1 | 2 | 3
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let currentPage = 1; // logical page
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let initialPage = 1; // page that's anchored as the "SSR" first page
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let bufLo = 1; // first loaded page
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let bufHi = 1; // last loaded page
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let inflight = false;
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// ---------- helpers ----------
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const $ = (id) => document.getElementById(id);
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const viewportEl = $("viewport");
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const innerEl = $("viewport-inner");
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const logEl = $("log");
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function fmtTime() {
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const d = new Date();
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return `${String(d.getHours()).padStart(2,"0")}:${String(d.getMinutes()).padStart(2,"0")}:${String(d.getSeconds()).padStart(2,"0")}.${String(d.getMilliseconds()).padStart(3,"0")}`;
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}
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function log(kind, msg) {
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const line = document.createElement("div");
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line.className = "line";
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line.innerHTML = `<span class="t">${fmtTime()}</span><span class="k ${kind}">${kind.toUpperCase()}</span>${msg}`;
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logEl.appendChild(line);
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logEl.scrollTop = logEl.scrollHeight;
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while (logEl.children.length > 50) logEl.removeChild(logEl.firstChild);
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}
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function toast(kind, msg) {
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const el = $("toast");
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el.className = `toast ${kind}`;
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el.innerHTML = `<span class="tag">${kind}</span>${msg}`;
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requestAnimationFrame(() => el.classList.add("show"));
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clearTimeout(toast._t);
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toast._t = setTimeout(() => el.classList.remove("show"), 1400);
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}
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function buildCard(pageNum, idx) {
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const el = document.createElement("div");
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el.className = "card";
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el.dataset.page = String(pageNum);
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el.innerHTML = `<div>p${pageNum}·#${idx+1}</div>`;
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return el;
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}
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function renderBuffer({ animate = false } = {}) {
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innerEl.innerHTML = "";
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const grid = document.createElement("div");
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grid.className = "grid";
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for (let p = bufLo; p <= bufHi; p++) {
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const marker = document.createElement("div");
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marker.className = "page-marker" + (p === currentPage ? " current" : "");
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marker.textContent = `Page ${p}` + (p === currentPage ? " · current" : "");
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marker.dataset.pageMarker = String(p);
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grid.appendChild(marker);
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for (let i = 0; i < PAGE_SIZE; i++) {
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const c = buildCard(p, i);
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if (!animate) c.style.animation = "none";
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grid.appendChild(c);
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}
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}
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innerEl.appendChild(grid);
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updateHud();
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}
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function updateHud() {
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$("hud-url").textContent = currentPage === 1 ? "/" : `/?page=${currentPage}`;
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$("hud-page").textContent = String(currentPage);
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$("hud-total").textContent = String(TOTAL_PAGES);
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$("hud-buf-lo").textContent = String(bufLo);
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$("hud-buf-hi").textContent = String(bufHi);
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$("hud-card-count").textContent = String((bufHi - bufLo + 1) * PAGE_SIZE);
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$("bar-page").textContent = String(currentPage);
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$("bar-total").textContent = String(TOTAL_PAGES);
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$("prev-btn").disabled = currentPage <= 1;
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$("next-btn").disabled = currentPage >= TOTAL_PAGES;
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const lm = $("load-more");
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lm.disabled = bufHi >= TOTAL_PAGES;
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lm.textContent = bufHi >= TOTAL_PAGES
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? "(end of library)"
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: `↓ Load page ${bufHi + 1} (extend buffer)`;
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}
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function flashRemount() {
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const f = $("remount-flash");
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f.classList.add("on");
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setTimeout(() => f.classList.remove("on"), 200);
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}
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function flashPage(p) {
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[...innerEl.querySelectorAll(`.card[data-page="${p}"]`)].forEach((el) => {
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el.classList.remove("flash");
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void el.offsetWidth;
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el.classList.add("flash");
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});
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}
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||||
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function scrollToPageMarker(p) {
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const m = innerEl.querySelector(`[data-page-marker="${p}"]`);
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if (!m) return false;
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const target = m.offsetTop - 12;
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viewportEl.scrollTo({ top: target, behavior: "smooth" });
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return true;
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||||
}
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||||
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||||
// ---------- the three modes ----------
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||||
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||||
// Mode 1: always URL nav. Buffer is reset to {target}.
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||||
function mode1Nav(target) {
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log("click", `Prev/Next clicked, target=${target}`);
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||||
log("url", `router.push(?page=${target})`);
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||||
log("remount", `LibraryGrid remounts (key includes effectivePage)`);
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||||
flashRemount();
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initialPage = target;
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||||
bufLo = target; bufHi = target;
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||||
currentPage = target;
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||||
renderBuffer({ animate: true });
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||||
viewportEl.scrollTop = 0;
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toast("url", `Navigated to page ${target} (remount)`);
|
||||
}
|
||||
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||||
// Mode 2: scroll if in buffer; else fetch+append; backward beyond initial → URL.
|
||||
async function mode2Nav(target) {
|
||||
log("click", `Prev/Next clicked, target=${target}`);
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||||
|
||||
if (target < initialPage) {
|
||||
log("note", `target < initialPage (${target} < ${initialPage}) — fall back to URL`);
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||||
log("url", `router.push(?page=${target})`);
|
||||
log("remount", `LibraryGrid remounts`);
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||||
flashRemount();
|
||||
initialPage = target;
|
||||
bufLo = target; bufHi = target;
|
||||
currentPage = target;
|
||||
renderBuffer({ animate: true });
|
||||
viewportEl.scrollTop = 0;
|
||||
toast("url", `Backward across buffer → URL nav (page ${target})`);
|
||||
return;
|
||||
}
|
||||
|
||||
if (target > bufHi) {
|
||||
log("note", `target > bufHi (${target} > ${bufHi}) — prefetching`);
|
||||
if (inflight) return;
|
||||
inflight = true;
|
||||
for (let p = bufHi + 1; p <= target; p++) {
|
||||
log("fetch", `fetch page ${p}…`);
|
||||
await new Promise((r) => setTimeout(r, FETCH_LATENCY_MS));
|
||||
bufHi = p;
|
||||
renderBuffer({ animate: false });
|
||||
log("note", `appended page ${p}, buffer now ${bufLo}–${bufHi}`);
|
||||
}
|
||||
inflight = false;
|
||||
}
|
||||
|
||||
currentPage = target;
|
||||
log("scroll", `scrollToIndex(rowOf(page ${target}))`);
|
||||
renderBuffer({ animate: false });
|
||||
requestAnimationFrame(() => scrollToPageMarker(target));
|
||||
flashPage(target);
|
||||
toast("scroll", `Scrolled to page ${target} (in-buffer)`);
|
||||
}
|
||||
|
||||
// Mode 3: Prev/Next is always URL. Load-more button does the buffer growth.
|
||||
function mode3Nav(target) {
|
||||
// Same as mode 1 for Prev/Next.
|
||||
mode1Nav(target);
|
||||
}
|
||||
async function mode3LoadMore() {
|
||||
if (bufHi >= TOTAL_PAGES) return;
|
||||
log("click", "Load-more clicked");
|
||||
log("fetch", `fetch page ${bufHi + 1}…`);
|
||||
inflight = true;
|
||||
await new Promise((r) => setTimeout(r, FETCH_LATENCY_MS));
|
||||
bufHi += 1;
|
||||
inflight = false;
|
||||
renderBuffer({ animate: false });
|
||||
log("note", `appended page ${bufHi}, buffer now ${bufLo}–${bufHi}`);
|
||||
toast("fetch", `Buffer extended to page ${bufHi}`);
|
||||
}
|
||||
|
||||
function navTo(target) {
|
||||
target = Math.max(1, Math.min(TOTAL_PAGES, target));
|
||||
if (target === currentPage && target >= bufLo && target <= bufHi) return;
|
||||
if (mode === 1) mode1Nav(target);
|
||||
else if (mode === 2) mode2Nav(target);
|
||||
else mode3Nav(target);
|
||||
}
|
||||
|
||||
// ---------- mode switching ----------
|
||||
const MODE_DESC = {
|
||||
1: `<b>Mode 1 — Always URL.</b> Every Prev/Next click pushes a new URL. The grid
|
||||
remounts (red flash). Buffer always reduces to a single page. Predictable but you
|
||||
lose the smooth in-buffer jump.`,
|
||||
2: `<b>Mode 2 — Scroll + prefetch.</b> If the target is already in the buffer it
|
||||
scrolls (green flash). Past <code>bufHi</code> it fetches missing pages then scrolls.
|
||||
Backward past <code>initialPage</code> still falls back to URL nav (residual seam).
|
||||
Try Next a few times then Prev.`,
|
||||
3: `<b>Mode 3 — Two affordances.</b> Prev/Next behaves like Mode 1 (always URL).
|
||||
A separate <span style="color: var(--mint)">Load more</span> button below extends
|
||||
the buffer in place. Each affordance has exactly one behavior.`,
|
||||
};
|
||||
function setMode(n) {
|
||||
mode = n;
|
||||
document.querySelectorAll(".modes button").forEach((b) => b.classList.remove("active"));
|
||||
$(`mode-${n}`).classList.add("active");
|
||||
$("mode-desc").innerHTML = MODE_DESC[n];
|
||||
$("load-more").style.display = n === 3 ? "block" : "none";
|
||||
// Reset state on mode change so each demo starts clean.
|
||||
currentPage = 1; initialPage = 1; bufLo = 1; bufHi = 1;
|
||||
renderBuffer({ animate: true });
|
||||
viewportEl.scrollTop = 0;
|
||||
log("note", `Mode switched to ${n}`);
|
||||
}
|
||||
|
||||
// ---------- wire up ----------
|
||||
$("mode-1").addEventListener("click", () => setMode(1));
|
||||
$("mode-2").addEventListener("click", () => setMode(2));
|
||||
$("mode-3").addEventListener("click", () => setMode(3));
|
||||
$("prev-btn").addEventListener("click", () => navTo(currentPage - 1));
|
||||
$("next-btn").addEventListener("click", () => navTo(currentPage + 1));
|
||||
$("jump-form").addEventListener("submit", (e) => {
|
||||
e.preventDefault();
|
||||
const v = Number($("jump-input").value);
|
||||
if (Number.isFinite(v) && v >= 1 && v <= TOTAL_PAGES) navTo(v);
|
||||
$("jump-input").value = "";
|
||||
});
|
||||
$("load-more").addEventListener("click", mode3LoadMore);
|
||||
|
||||
setMode(1);
|
||||
</script>
|
||||
</body>
|
||||
</html>
|
||||
Reference in New Issue
Block a user