ArrowJsWithHTMXLocalServerDemo/htmx_arrow_single_file_simple_demo.html at main · pjrusso/ArrowJsWithHTMXLocalServerDemo · GitHub

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<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8" />
  <meta name="viewport" content="width=device-width,initial-scale=1" />
  <title>HTMX + Arrow-JS Interactive Islands Demo</title>

  <!-- htmx -->
  <script src="https://unpkg.com/htmx.org@2.0.7"></script>

  <style>
    :root {
      --border: #d7d7db;
      --muted: #666;
      --bg: #f7f7f9;
      --panel: #fff;
      --accent: #1f5eff;
      --accent-soft: #eef3ff;
    }

    * { box-sizing: border-box; }

    body {
      margin: 0;
      font-family: Arial, Helvetica, sans-serif;
      background: var(--bg);
      color: #222;
      line-height: 1.45;
    }

    .wrap {
      max-width: 1100px;
      margin: 0 auto;
      padding: 24px;
    }

    h1, h2, h3 { margin-top: 0; }

    .intro, .panel, .info {
      background: var(--panel);
      border: 1px solid var(--border);
      border-radius: 14px;
      padding: 18px;
      box-shadow: 0 1px 2px rgba(0,0,0,.04);
    }

    .intro { margin-bottom: 16px; }

    .toolbar {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin: 16px 0;
    }

    button {
      border: 1px solid var(--border);
      background: #fff;
      border-radius: 10px;
      padding: 10px 14px;
      cursor: pointer;
      font-size: 14px;
    }

    button.primary {
      background: var(--accent);
      border-color: var(--accent);
      color: #fff;
    }

    button.soft {
      background: var(--accent-soft);
      border-color: #cfdcff;
    }

    .layout {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 16px;
      align-items: start;
    }

    .muted { color: var(--muted); }
    .small { font-size: 13px; }

    .badge {
      display: inline-block;
      padding: 4px 10px;
      border-radius: 999px;
      border: 1px solid var(--border);
      background: #fafafa;
      font-size: 12px;
      margin-left: 8px;
    }

    .row {
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
      align-items: center;
      margin: 12px 0;
    }

    input[type="text"], select {
      padding: 10px 12px;
      border-radius: 10px;
      border: 1px solid var(--border);
      min-width: 220px;
      font-size: 14px;
    }

    .results-table {
      width: 100%;
      border-collapse: collapse;
      margin-top: 12px;
    }

    .results-table th,
    .results-table td {
      border: 1px solid var(--border);
      padding: 10px;
      text-align: left;
      vertical-align: top;
    }

    .results-table th { background: #fafafa; }

    .list-grid {
      display: grid;
      grid-template-columns: 1fr auto 1fr;
      gap: 14px;
      margin-top: 16px;
      align-items: start;
    }

    .list-box {
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 12px;
      background: #fff;
      min-height: 280px;
    }

    .list-box ul {
      list-style: none;
      padding: 0;
      margin: 10px 0 0;
    }

    .list-box li {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      border: 1px solid #ececf0;
      border-radius: 10px;
      padding: 8px 10px;
      margin-bottom: 8px;
      background: #fcfcfd;
    }

    .move-buttons {
      display: flex;
      flex-direction: column;
      gap: 10px;
      justify-content: center;
      align-items: center;
      padding-top: 60px;
    }

    details {
      border: 1px solid var(--border);
      border-radius: 10px;
      padding: 10px 12px;
      background: #fff;
      margin-top: 10px;
    }

    details summary { cursor: pointer; font-weight: 600; }

    .code {
      font-family: Consolas, monospace;
      background: #f4f4f6;
      border: 1px solid var(--border);
      border-radius: 8px;
      padding: 2px 6px;
    }

    @media (max-width: 850px) {
      .layout { grid-template-columns: 1fr; }
      .list-grid { grid-template-columns: 1fr; }
      .move-buttons {
        flex-direction: row;
        padding-top: 0;
        justify-content: flex-start;
      }
    }
  </style>
</head>
<body>
  <div class="wrap">
    <div class="intro">
      <h1>HTMX + Arrow-JS interactive islands demo</h1>
      <p>
        This single file demonstrates the idea we discussed:
        <strong>server-rendered pages or fragments</strong> plus small pockets of
        <strong>client-side reactivity</strong>.
      </p>
      <p class="muted small">
        In a real ASP.NET Core Razor Pages app, the fragment HTML would normally come from
        Razor partials or page handlers. In this demo, htmx loads fragment markup from
        inline templates so you only need one file.
      </p>

      <div class="toolbar">
        <button class="primary" data-demo-load="search">Load search island</button>
        <button class="soft" data-demo-load="results">Load results island</button>
        <button class="soft" data-demo-load="picker">Load dual-list island</button>
      </div>
    </div>

    <div class="layout">
      <div id="content" class="panel">
        <p>Click a button above to load a fragment into this panel.</p>
      </div>

      <div class="info">
        <h3>What this is showing</h3>
        <ul>
          <li><strong>htmx-like fragment loading</strong> into a target panel</li>
          <li><strong>Arrow-JS local state</strong> inside each loaded fragment</li>
          <li>Search filtering, results toggling, and a dual-list picker</li>
          <li>The “interactive islands” approach for Razor Pages</li>
        </ul>

        <details>
          <summary>How this maps to Razor Pages</summary>
          <div class="small muted" style="margin-top:8px;">
            <p>
              <span class="code">index.html</span> here represents the Razor Page shell.
            </p>
            <p>
              Each fragment would become a Razor partial like
              <span class="code">_Search.cshtml</span> or
              <span class="code">_Results.cshtml</span>.
            </p>
            <p>
              htmx would call a page handler or controller action that returns the partial,
              then Arrow-JS would enhance the swapped fragment.
            </p>
          </div>
        </details>

        <details>
          <summary>Why one file here?</summary>
          <div class="small muted" style="margin-top:8px;">
            <p>
              Pure htmx normally makes HTTP requests for HTML. That means a local server is
              usually required for separate files. This single-file version avoids that by
              taking the fragment HTML from inline templates, which makes it very easy to demo.
            </p>
          </div>
        </details>
      </div>
    </div>
  </div>

  <!-- Fragment templates -->
  <template id="tpl-search">
    <div data-arrow-search></div>
  </template>

  <template id="tpl-results">
    <div data-arrow-results></div>
  </template>

  <template id="tpl-picker">
    <div data-arrow-picker></div>
  </template>

  <script type="module">
    import { reactive, html } from 'https://esm.sh/@arrow-js/core';

    const content = document.getElementById('content');

    // ---------------------------------------------------------------------
    // Tiny helper that mimics the fragment-loading idea for a one-file demo.
    // In a real htmx version this content would arrive via hx-get.
    // ---------------------------------------------------------------------
    function loadTemplate(name) {
      const tpl = document.getElementById(`tpl-${name}`);
      if (!tpl) return;
      content.innerHTML = tpl.innerHTML;
      initArrowIslands(content);
    }

    document.querySelectorAll('[data-demo-load]').forEach(btn => {
      btn.addEventListener('click', () => loadTemplate(btn.dataset.demoLoad));
    });

    // ---------------------------------------------------------------------
    // Search island
    // ---------------------------------------------------------------------
    function initSearchIsland(root) {
      const host = root.querySelector('[data-arrow-search]');
      if (!host || host.dataset.arrowBound === 'true') return;
      host.dataset.arrowBound = 'true';

      const state = reactive({
        term: '',
        role: 'all',
        people: [
          { name: 'Alice Brown', role: 'Developer', location: 'London' },
          { name: 'Ben Smith', role: 'Tester', location: 'Birmingham' },
          { name: 'Chloe Jones', role: 'Analyst', location: 'Bristol' },
          { name: 'Daniel Reed', role: 'Developer', location: 'Manchester' },
          { name: 'Ella Green', role: 'Product Owner', location: 'Leeds' }
        ]
      });

      function filtered() {
        const term = state.term.trim().toLowerCase();
        return state.people.filter(p => {
          const matchesTerm = !term || `${p.name} ${p.role} ${p.location}`.toLowerCase().includes(term);
          const matchesRole = state.role === 'all' || p.role === state.role;
          return matchesTerm && matchesRole;
        });
      }

      const view = html`
        <div>
          <h2>Search island <span class="badge">Arrow-JS</span></h2>
          <p class="muted">
            This simulates a search panel loaded into a Razor Page area. Arrow-JS handles
            the local filter state and instant updates.
          </p>

          <div class="row">
            <input
              type="text"
              placeholder="Type to filter name, role or location"
              @input="${e => state.term = e.target.value}"
            />

            <select @change="${e => state.role = e.target.value}">
              <option value="all">All roles</option>
              <option value="Developer">Developer</option>
              <option value="Tester">Tester</option>
              <option value="Analyst">Analyst</option>
              <option value="Product Owner">Product Owner</option>
            </select>

            <span class="badge">${() => filtered().length} matches</span>
          </div>

          <ul>
            ${() => filtered().map(p => html`
              <li>${p.name} — ${p.role} — ${p.location}</li>
            `)}
          </ul>

          <div class="row" style="margin-top:14px;">
            <button class="soft" data-demo-load="results">Swap to results island</button>
            <button class="soft" data-demo-load="picker">Swap to dual-list island</button>
          </div>
        </div>
      `;

      view(host);
      wireSwapButtons(host);
    }

    // ---------------------------------------------------------------------
    // Results island
    // ---------------------------------------------------------------------
    function initResultsIsland(root) {
      const host = root.querySelector('[data-arrow-results]');
      if (!host || host.dataset.arrowBound === 'true') return;
      host.dataset.arrowBound = 'true';

      const state = reactive({
        showDetails: false,
        compact: true,
        results: [
          { name: 'Alice Brown', score: 97, notes: 'Strong API and Azure background' },
          { name: 'Daniel Reed', score: 91, notes: 'Good front-end and UX skills' },
          { name: 'Chloe Jones', score: 88, notes: 'Solid analysis and stakeholder work' }
        ]
      });

      const view = html`
        <div>
          <h2>Results island <span class="badge">htmx swap target + Arrow state</span></h2>
          <p class="muted">
            In a real app, htmx might fetch this fragment from the server after a form submit.
            Arrow-JS then manages purely local behaviour like expanding rows or switching display modes.
          </p>

          <div class="row">
            <button class="soft" @click="${() => state.showDetails = !state.showDetails}">
              ${() => state.showDetails ? 'Hide details' : 'Show details'}
            </button>
            <button class="soft" @click="${() => state.compact = !state.compact}">
              ${() => state.compact ? 'Switch to full view' : 'Switch to compact view'}
            </button>
            <span class="badge">${() => state.results.length} results</span>
          </div>

          <table class="results-table">
            <thead>
              <tr>
                <th>Name</th>
                <th>Score</th>
                <th>${() => state.compact ? 'Summary' : 'Notes'}</th>
              </tr>
            </thead>
            <tbody>
              ${() => state.results.map(r => html`
                <tr>
                  <td>${r.name}</td>
                  <td>${r.score}</td>
                  <td>
                    ${() => state.showDetails
                      ? r.notes
                      : 'Hidden until details are shown'}
                  </td>
                </tr>
              `)}
            </tbody>
          </table>

          <div class="row" style="margin-top:14px;">
            <button class="soft" data-demo-load="search">Back to search island</button>
            <button class="soft" data-demo-load="picker">Load dual-list island</button>
          </div>
        </div>
      `;

      view(host);
      wireSwapButtons(host);
    }

    // ---------------------------------------------------------------------
    // Dual-list picker island
    // ---------------------------------------------------------------------
    function initPickerIsland(root) {
      const host = root.querySelector('[data-arrow-picker]');
      if (!host || host.dataset.arrowBound === 'true') return;
      host.dataset.arrowBound = 'true';

      const state = reactive({
        available: [
          'English',
          'Maths',
          'Science',
          'History',
          'Geography',
          'Computing'
        ],
        selected: ['Art'],
        filterAvailable: '',
        filterSelected: ''
      });

      function filteredAvailable() {
        const t = state.filterAvailable.trim().toLowerCase();
        return state.available.filter(x => !t || x.toLowerCase().includes(t));
      }

      function filteredSelected() {
        const t = state.filterSelected.trim().toLowerCase();
        return state.selected.filter(x => !t || x.toLowerCase().includes(t));
      }

      function moveToSelected(item) {
        state.available = state.available.filter(x => x !== item);
        state.selected = [...state.selected, item].sort();
      }

      function moveToAvailable(item) {
        state.selected = state.selected.filter(x => x !== item);
        state.available = [...state.available, item].sort();
      }

      const view = html`
        <div>
          <h2>Dual-list picker island <span class="badge">Good interactive-island example</span></h2>
          <p class="muted">
            This is the kind of self-contained UI that is often awkward with plain jQuery but does not justify a full SPA.
            Razor could still own the page, form post and persistence.
          </p>

          <div class="list-grid">
            <div class="list-box">
              <h3>Available subjects <span class="badge">${() => filteredAvailable().length}</span></h3>
              <input
                type="text"
                placeholder="Filter available"
                @input="${e => state.filterAvailable = e.target.value}"
              />
              <ul>
                ${() => filteredAvailable().map(item => html`
                  <li>
                    <span>${item}</span>
                    <button class="soft" @click="${() => moveToSelected(item)}">Add →</button>
                  </li>
                `)}
              </ul>
            </div>

            <div class="move-buttons">
              <button class="soft" data-demo-load="search">Search</button>
              <button class="soft" data-demo-load="results">Results</button>
            </div>

            <div class="list-box">
              <h3>Selected subjects <span class="badge">${() => filteredSelected().length}</span></h3>
              <input
                type="text"
                placeholder="Filter selected"
                @input="${e => state.filterSelected = e.target.value}"
              />
              <ul>
                ${() => filteredSelected().map(item => html`
                  <li>
                    <span>${item}</span>
                    <button class="soft" @click="${() => moveToAvailable(item)}">← Remove</button>
                  </li>
                `)}
              </ul>
            </div>
          </div>
        </div>
      `;

      view(host);
      wireSwapButtons(host);
    }

    function wireSwapButtons(root) {
      root.querySelectorAll('[data-demo-load]').forEach(btn => {
        btn.addEventListener('click', () => loadTemplate(btn.dataset.demoLoad));
      });
    }

    function initArrowIslands(root = document) {
      initSearchIsland(root);
      initResultsIsland(root);
      initPickerIsland(root);
    }

    // Load an initial fragment
    loadTemplate('search');
  </script>
</body>
</html>