Credence-Frontend/test-focus-trap.html at main · olatechy0/Credence-Frontend · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>useFocusTrap Test Page</title>
  <style>
    body {
      font-family: system-ui, -apple-system, sans-serif;
      max-width: 900px;
      margin: 0 auto;
      padding: 2rem;
      line-height: 1.5;
    }
    .test-section {
      border: 1px solid #ccc;
      padding: 1.5rem;
      margin-bottom: 2rem;
      border-radius: 8px;
    }
    .test-section h2 {
      margin-top: 0;
    }
    .focus-trap-container {
      border: 2px solid #007bff;
      padding: 1.5rem;
      border-radius: 8px;
      background: #f8f9fa;
    }
    .focus-trap-container.active {
      border-color: #28a745;
      background: #d4edda;
    }
    .focus-trap-container button,
    .focus-trap-container input,
    .focus-trap-container a {
      margin: 0.5rem;
      padding: 0.5rem;
    }
    .controls {
      display: flex;
      gap: 1rem;
      flex-wrap: wrap;
      margin-bottom: 1rem;
    }
    button {
      padding: 0.5rem 1rem;
      cursor: pointer;
      background: #007bff;
      color: white;
      border: none;
      border-radius: 4px;
    }
    button:hover {
      background: #0056b3;
    }
    button:disabled {
      background: #ccc;
      cursor: not-allowed;
    }
    .log {
      background: #f4f4f4;
      padding: 1rem;
      border-radius: 4px;
      max-height: 200px;
      overflow-y: auto;
      font-family: monospace;
      font-size: 0.9rem;
    }
    .log-entry {
      margin: 0.25rem 0;
      padding: 0.25rem;
      border-bottom: 1px solid #ddd;
    }
    .log-entry.focus {
      color: #007bff;
    }
    .log-entry.escape {
      color: #dc3545;
    }
    .log-entry.activate {
      color: #28a745;
    }
    .log-entry.deactivate {
      color: #ffc107;
    }
    .external-button {
      margin: 1rem 0;
    }
    code {
      background: #f4f4f4;
      padding: 0.2rem 0.4rem;
      border-radius: 3px;
    }
    .status {
      padding: 0.5rem;
      border-radius: 4px;
      margin: 0.5rem 0;
      font-weight: bold;
    }
    .status.active {
      background: #d4edda;
      color: #155724;
    }
    .status.inactive {
      background: #f8d7da;
      color: #721c24;
    }
  </style>
</head>
<body>
  <h1>useFocusTrap Test Page</h1>

  <div class="test-section">
    <h2>Test Controls</h2>
    <div class="controls">
      <button id="activate-btn">Activate Focus Trap</button>
      <button id="deactivate-btn">Deactivate Focus Trap</button>
      <button id="toggle-return-focus">Toggle Return Focus: ON</button>
      <button id="clear-log">Clear Log</button>
    </div>
    <div id="status" class="status inactive">Status: Inactive</div>
  </div>

  <div class="test-section">
    <h2>External Button (Before Trap)</h2>
    <button class="external-button" id="external-before">External Button Before</button>
  </div>

  <div class="test-section">
    <h2>Focus Trap Container</h2>
    <div id="trap-container" class="focus-trap-container">
      <h3>Inside Focus Trap</h3>
      <button id="trap-btn-1">Button 1</button>
      <button id="trap-btn-2">Button 2</button>
      <input type="text" id="trap-input-1" placeholder="Input 1" />
      <button id="trap-btn-3">Button 3</button>
      <a href="#" id="trap-link-1" onclick="return false;">Link 1</a>
      <input type="text" id="trap-input-2" placeholder="Input 2" />
      <button id="trap-btn-4">Button 4</button>
    </div>
  </div>

  <div class="test-section">
    <h2>External Button (After Trap)</h2>
    <button class="external-button" id="external-after">External Button After</button>
  </div>

  <div class="test-section">
    <h2>Event Log</h2>
    <div id="log" class="log"></div>
  </div>

  <div class="test-section">
    <h2>Test Instructions</h2>
    <h3>Tab/Shift+Tab Cycling Test:</h3>
    <ol>
      <li>Click "Activate Focus Trap"</li>
      <li>Press <code>Tab</code> repeatedly - focus should cycle through trap elements only</li>
      <li>Press <code>Shift+Tab</code> repeatedly - focus should cycle backwards through trap elements only</li>
      <li>Focus should never leave the trap container while active</li>
    </ol>

    <h3>Escape Key Test:</h3>
    <ol>
      <li>Click "Activate Focus Trap"</li>
      <li>Focus any element inside the trap</li>
      <li>Press <code>Escape</code> - should call onEscape callback</li>
      <li>Check log for "Escape key pressed" entry</li>
    </ol>

    <h3>Focus Restore on Deactivate Test:</h3>
    <ol>
      <li>Click "External Button Before" to focus it</li>
      <li>Click "Activate Focus Trap"</li>
      <li>Click "Deactivate Focus Trap"</li>
      <li>Focus should return to "External Button Before"</li>
      <li>Toggle "Return Focus" to OFF and repeat - focus should not return</li>
    </ol>

    <h3>Initial Focus Test:</h3>
    <ol>
      <li>Click "External Button Before" to focus it</li>
      <li>Click "Activate Focus Trap"</li>
      <li>Focus should move to first focusable element in trap (Button 1)</li>
    </ol>
  </div>

  <script>
    // Simplified focus trap implementation for testing
    const FOCUSABLE_SELECTOR =
      'a[href], button:not([disabled]), input:not([disabled]):not([type="hidden"]), select:not([disabled]), textarea:not([disabled]), [tabindex]:not([tabindex="-1"])'

    function getFocusableElements(container) {
      return Array.from(container.querySelectorAll(FOCUSABLE_SELECTOR)).filter(
        (el) => el.offsetParent !== null || el.getClientRects().length > 0
      )
    }

    let isActive = false
    let returnFocusOnDeactivate = true
    let previouslyFocusedElement = null
    const trapContainer = document.getElementById('trap-container')
    const logDiv = document.getElementById('log')
    const statusDiv = document.getElementById('status')

    function log(message, type = '') {
      const entry = document.createElement('div')
      entry.className = `log-entry ${type}`
      entry.textContent = `[${new Date().toLocaleTimeString()}] ${message}`
      logDiv.appendChild(entry)
      logDiv.scrollTop = logDiv.scrollHeight
    }

    function updateStatus() {
      if (isActive) {
        trapContainer.classList.add('active')
        statusDiv.textContent = 'Status: Active'
        statusDiv.className = 'status active'
      } else {
        trapContainer.classList.remove('active')
        statusDiv.textContent = 'Status: Inactive'
        statusDiv.className = 'status inactive'
      }
    }

    function activateTrap() {
      if (isActive) return

      previouslyFocusedElement = document.activeElement
      log(`Activating trap. Previously focused: ${previouslyFocusedElement?.id || 'none'}`, 'activate')

      isActive = true
      updateStatus()

      // Focus first element
      const focusables = getFocusableElements(trapContainer)
      if (focusables.length > 0) {
        focusables[0].focus()
        log(`Focused first element: ${focusables[0].id}`, 'focus')
      }
    }

    function deactivateTrap() {
      if (!isActive) return

      log('Deactivating trap', 'deactivate')

      isActive = false
      updateStatus()

      // Return focus if enabled
      if (returnFocusOnDeactivate && previouslyFocusedElement) {
        log(`Returning focus to: ${previouslyFocusedElement.id}`, 'focus')
        requestAnimationFrame(() => {
          if (previouslyFocusedElement && typeof previouslyFocusedElement.focus === 'function') {
            previouslyFocusedElement.focus()
          }
        })
      }

      previouslyFocusedElement = null
    }

    function handleKeyDown(event) {
      if (!isActive) return

      if (event.key === 'Escape') {
        event.preventDefault()
        log('Escape key pressed - calling onEscape', 'escape')
        deactivateTrap()
        return
      }

      if (event.key !== 'Tab') return

      const focusables = getFocusableElements(trapContainer)
      if (focusables.length === 0) return

      const first = focusables[0]
      const last = focusables[focusables.length - 1]
      const active = document.activeElement

      log(`Tab pressed. Active: ${active?.id}, First: ${first.id}, Last: ${last.id}, Shift: ${event.shiftKey}`)

      if (event.shiftKey) {
        if (active === first || !trapContainer.contains(active)) {
          event.preventDefault()
          last.focus()
          log(`Shift+Tab: Wrapped to last element: ${last.id}`, 'focus')
        }
      } else if (active === last) {
        event.preventDefault()
        first.focus()
        log(`Tab: Wrapped to first element: ${first.id}`, 'focus')
      }
    }

    // Event listeners
    document.getElementById('activate-btn').addEventListener('click', activateTrap)
    document.getElementById('deactivate-btn').addEventListener('click', deactivateTrap)

    const toggleReturnBtn = document.getElementById('toggle-return-focus')
    toggleReturnBtn.addEventListener('click', () => {
      returnFocusOnDeactivate = !returnFocusOnDeactivate
      toggleReturnBtn.textContent = `Toggle Return Focus: ${returnFocusOnDeactivate ? 'ON' : 'OFF'}`
      log(`Return focus on deactivate: ${returnFocusOnDeactivate ? 'ON' : 'OFF'}`)
    })

    document.getElementById('clear-log').addEventListener('click', () => {
      logDiv.innerHTML = ''
    })

    // Log focus changes
    document.querySelectorAll('button, input, a').forEach(el => {
      el.addEventListener('focus', () => {
        log(`Focused: ${el.id}`, 'focus')
      })
    })

    // Add keydown listener to trap container
    trapContainer.addEventListener('keydown', handleKeyDown)

    // Initial log
    log('Test page loaded. Click "Activate Focus Trap" to begin testing.')
  </script>
</body>
</html>