lightview/docs/components/dropdown.html

A reactive UI library with features of Bau, Juris, and HTMX plus safe LLM UI generation

<!-- SEO-friendly SPA Shim -->
<script src="/lightview-router.js"></script>
<script>
    if (globalThis.LightviewRouter) {
        LightviewRouter.base('/index.html');
    }
</script>

<!-- Load the page-specific stylesheet -->
<link rel="stylesheet" href="./index.css">

<!-- Gallery Structure -->
<div class="gallery-page">
    <div class="gallery-layout">
        <!-- Sidebar Overlay -->
        <div id="sidebar-overlay" class="sidebar-overlay"></div>

        <!-- Sidebar -->
        <div id="gallery-sidebar" class="gallery-sidebar" style="visibility: hidden" src="./component-nav.html"></div>

        <!-- Main Content -->
        <div id="gallery-main" class="gallery-main">
            <!-- Header Container -->
            <div
                style="position: sticky; top: 0; z-index: 30; background: var(--gallery-surface); border-bottom: 1px solid var(--gallery-border); backdrop-filter: blur(8px);">
                <!-- Breadcrumbs Row -->
                <div style="padding: 0.75rem 1.5rem 0;">
                    <script>
                        (() => {
                            const { Breadcrumbs } = Lightview.tags;
                            const breadcrumbs = Breadcrumbs({
                                id: 'page-breadcrumbs',
                                items: [
                                    { label: 'Components', href: '/docs/components' },
                                    { label: 'Dropdown' }
                                ]
                            });
                            document.currentScript.replaceWith(breadcrumbs.domEl);
                        })();
                    </script>
                </div>
                <!-- Title Row -->
                <div class="gallery-header"
                    style="border-bottom: none; height: auto; padding-top: 0.5rem; padding-bottom: 0.75rem;">
                    <button id="toggle-btn" class="toggle-btn" aria-label="Toggle Sidebar">
                        <svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" class="toggle-icon"
                            style="stroke: currentColor; stroke-width: 2;">
                            <path stroke-linecap="round" stroke-linejoin="round" d="M15 19l-7-7 7-7" />
                            <path stroke-linecap="round" stroke-linejoin="round" d="M11 19l-7-7 7-7" />
                        </svg>
                    </button>
                    <h1 class="gallery-title">Dropdown</h1>
                </div>
            </div>

            <!-- Content -->
            <div class="gallery-content">
                <div class="section-content" style="max-width: 1000px;">
                    <p class="text-lg" style="opacity: 0.7; margin-bottom: 1.5rem;">
                        Dropdown can open a menu or any other element when clicking or hovering.
                    </p>

                    <!-- Basic Example with Examplify -->
                    <div class="card bg-base-200" style="margin-bottom: 2rem;">
                        <div class="card-body">
                            <h2 class="card-title">Basic Example</h2>
                            <p class="text-sm" style="opacity: 0.7; margin-bottom: 1rem;">Dropdown with menu items</p>

                            <!-- Tabs -->
                            <script>
                                globalThis.switchSyntaxTab = (tabId) => {
                                    const tabs = ['tagged', 'vdom', 'object'];
                                    tabs.forEach(t => {
                                        const tabEl = document.getElementById(`tab-btn-${t}`);
                                        const contentEl = document.getElementById(`syntax-${t}`);
                                        if (t === tabId) {
                                            tabEl.classList.add('syntax-tab-active');
                                            contentEl.style.display = 'block';
                                        } else {
                                            tabEl.classList.remove('syntax-tab-active');
                                            contentEl.style.display = 'none';
                                        }
                                    });
                                };
                            </script>
                            <div role="tablist" class="syntax-tabs" style="margin-bottom: 1rem;">
                                <button id="tab-btn-tagged" role="tab" class="syntax-tab syntax-tab-active"
                                    onclick="switchSyntaxTab('tagged')">Tagged</button>
                                <button id="tab-btn-vdom" role="tab" class="syntax-tab"
                                    onclick="switchSyntaxTab('vdom')">vDOM</button>
                                <button id="tab-btn-object" role="tab" class="syntax-tab"
                                    onclick="switchSyntaxTab('object')">Object
                                    DOM</button>
                            </div>

                            <!-- Tagged Syntax -->
                            <div id="syntax-tagged">
                                <pre><script>
                                    examplify(document.currentScript.nextElementSibling, {
                                        at: document.currentScript.parentElement,
                                        scripts: ['/lightview.js', '/lightview-x.js'],
                                        styles: ['https://cdn.jsdelivr.net/npm/daisyui@3.9.4/dist/full.min.css'],
                                        type: 'module',
                                        minHeight: 160,
                                        autoRun: true
                                    });
                                </script><code contenteditable="true">await import('/components/actions/dropdown.js');
const { tags, $ } = Lightview;
const { div, Dropdown } = tags;

// Basic dropdown
const dropdown = Dropdown({},
    Dropdown.Trigger({}, 'Click me'),
    Dropdown.Content({},
        Dropdown.Item({}, 'Profile'),
        Dropdown.Item({}, 'Settings'),
        Dropdown.Item({}, 'Logout')
    )
);

$('#example').content(div({ style: 'height: 10rem;' }, dropdown));</code></pre>
                            </div>

                            <!-- vDOM Syntax -->
                            <div id="syntax-vdom" style="display: none;">
                                <pre><script>
                                    examplify(document.currentScript.nextElementSibling, {
                                        at: document.currentScript.parentElement,
                                        scripts: ['/lightview.js', '/lightview-x.js'],
                                        styles: ['https://cdn.jsdelivr.net/npm/daisyui@3.9.4/dist/full.min.css'],
                                        type: 'module',
                                        minHeight: 160
                                    });
                                </script><code contenteditable="true">await import('/components/actions/dropdown.js');
const { $, tags } = Lightview;
const { Dropdown, div } = tags;

const dropdown = {
    tag: Dropdown,
    children: [
        { tag: Dropdown.Trigger, children: ['Click me'] },
        {
            tag: Dropdown.Content,
            children: [
                { tag: Dropdown.Item, children: ['Profile'] },
                { tag: Dropdown.Item, children: ['Settings'] },
                { tag: Dropdown.Item, children: ['Logout'] }
            ]
        }
    ]
};

$('#example').content({ tag: div, attributes: { style: 'height: 10rem;' }, children: [dropdown] });</code></pre>
                            </div>

                            <!-- Object DOM Syntax -->
                            <div id="syntax-object" style="display: none;">
                                <pre><script>
                                    examplify(document.currentScript.nextElementSibling, {
                                        at: document.currentScript.parentElement,
                                        scripts: ['/lightview.js', '/lightview-x.js'],
                                        styles: ['https://cdn.jsdelivr.net/npm/daisyui@3.9.4/dist/full.min.css'],
                                        type: 'module',
                                        minHeight: 160
                                    });
                                </script><code contenteditable="true">await import('/components/actions/dropdown.js');
const { $ } = Lightview;

const dropdown = {
    Dropdown: {
        children: [
            { 'Dropdown.Trigger': { children: ['Click me'] } },
            {
                'Dropdown.Content': {
                    children: [
                        { 'Dropdown.Item': { children: ['Profile'] } },
                        { 'Dropdown.Item': { children: ['Settings'] } },
                        { 'Dropdown.Item': { children: ['Logout'] } }
                    ]
                }
            }
        ]
    }
};

$('#example').content({ div: { style: 'height: 10rem;', children: [dropdown] } });</code></pre>
                            </div>
                        </div>
                    </div>

                    <!-- Reactive Example with Examplify -->
                    <div class="card bg-base-200" style="margin-bottom: 2rem;">
                        <div class="card-body">
                            <h2 class="card-title">Dynamic Menu</h2>
                            <p class="text-sm" style="opacity: 0.7; margin-bottom: 1rem;">Dropdown with reactive menu
                                items</p>

                            <!-- Tabs -->
                            <script>
                                globalThis.switchReactiveSyntaxTab = (tabId) => {
                                    const tabs = ['tagged', 'vdom', 'object'];
                                    tabs.forEach(t => {
                                        const tabEl = document.getElementById(`reactive-tab-btn-${t}`);
                                        const contentEl = document.getElementById(`reactive-syntax-${t}`);
                                        if (t === tabId) {
                                            tabEl.classList.add('syntax-tab-active');
                                            contentEl.style.display = 'block';
                                        } else {
                                            tabEl.classList.remove('syntax-tab-active');
                                            contentEl.style.display = 'none';
                                        }
                                    });
                                };
                            </script>
                            <div role="tablist" class="syntax-tabs" style="margin-bottom: 1rem;">
                                <button id="reactive-tab-btn-tagged" role="tab" class="syntax-tab syntax-tab-active"
                                    onclick="switchReactiveSyntaxTab('tagged')">Tagged</button>
                                <button id="reactive-tab-btn-vdom" role="tab" class="syntax-tab"
                                    onclick="switchReactiveSyntaxTab('vdom')">vDOM</button>
                                <button id="reactive-tab-btn-object" role="tab" class="syntax-tab"
                                    onclick="switchReactiveSyntaxTab('object')">Object DOM</button>
                            </div>

                            <!-- Tagged Syntax -->
                            <div id="reactive-syntax-tagged">
                                <pre><script>
                                    examplify(document.currentScript.nextElementSibling, {
                                        at: document.currentScript.parentElement,
                                        scripts: ['/lightview.js', '/lightview-x.js'],
                                        styles: ['https://cdn.jsdelivr.net/npm/daisyui@3.9.4/dist/full.min.css'],
                                        type: 'module',
                                        minHeight: 200
                                    });
                                </script><code contenteditable="true">await import('/components/actions/dropdown.js');
const { signal, tags, $ } = Lightview;
const { div, span, Dropdown } = tags;

const selected = signal('Select an option');
const options = ['🍎 Apple', '🍌 Banana', '🍊 Orange', '🍇 Grape'];

const dropdown = Dropdown({},
    Dropdown.Trigger({ class: 'btn-primary' }, 
        () => selected.value
    ),
    Dropdown.Content({},
        ...options.map(opt => 
            Dropdown.Item({ 
                onclick: () => { selected.value = opt; }
            }, opt)
        )
    )
);

const demo = div({ style: 'display: flex; gap: 1rem; align-items: center; height: 12rem;' },
    dropdown,
    span({ style: 'font-size: 0.875rem; opacity: 0.7;' }, 
        () => `Selected: ${selected.value}`
    )
);

$('#example').content(demo);</code></pre>
                            </div>

                            <!-- vDOM Syntax -->
                            <div id="reactive-syntax-vdom" style="display: none;">
                                <pre><script>
                                    examplify(document.currentScript.nextElementSibling, {
                                        at: document.currentScript.parentElement,
                                        scripts: ['/lightview.js', '/lightview-x.js'],
                                        styles: ['https://cdn.jsdelivr.net/npm/daisyui@3.9.4/dist/full.min.css'],
                                        type: 'module',
                                        minHeight: 200
                                    });
                                </script><code contenteditable="true">await import('/components/actions/dropdown.js');
const { signal, $, tags } = Lightview;
const { Dropdown, div, span } = tags;

const selected = signal('Select an option');
const options = ['🍎 Apple', '🍌 Banana', '🍊 Orange', '🍇 Grape'];

const dropdown = {
    tag: Dropdown,
    children: [
        {
            tag: Dropdown.Trigger,
            attributes: { class: 'btn-primary' },
            children: [() => selected.value]
        },
        {
            tag: Dropdown.Content,
            children: options.map(opt => ({
                tag: Dropdown.Item,
                attributes: { onclick: () => { selected.value = opt; } },
                children: [opt]
            }))
        }
    ]
};

const demo = {
    tag: div,
    attributes: { style: 'display: flex; gap: 1rem; align-items: center; height: 12rem;' },
    children: [
        dropdown,
        {
            tag: span,
            attributes: { style: 'font-size: 0.875rem; opacity: 0.7;' },
            children: [() => `Selected: ${selected.value}`]
        }
    ]
};

$('#example').content(demo);</code></pre>
                            </div>

                            <!-- Object DOM Syntax -->
                            <div id="reactive-syntax-object" style="display: none;">
                                <pre><script>
                                    examplify(document.currentScript.nextElementSibling, {
                                        at: document.currentScript.parentElement,
                                        scripts: ['/lightview.js', '/lightview-x.js'],
                                        styles: ['https://cdn.jsdelivr.net/npm/daisyui@3.9.4/dist/full.min.css'],
                                        type: 'module',
                                        minHeight: 200
                                    });
                                </script><code contenteditable="true">await import('/components/actions/dropdown.js');
const { signal, $ } = Lightview;

const selected = signal('Select an option');
const options = ['🍎 Apple', '🍌 Banana', '🍊 Orange', '🍇 Grape'];

const dropdown = {
    Dropdown: {
        children: [
            {
                'Dropdown.Trigger': {
                    class: 'btn-primary',
                    children: [() => selected.value]
                }
            },
            {
                'Dropdown.Content': {
                    children: options.map(opt => ({
                        'Dropdown.Item': {
                            onclick: () => { selected.value = opt; },
                            children: [opt]
                        }
                    }))
                }
            }
        ]
    }
};

const demo = {
    div: {
        style: 'display: flex; gap: 1rem; align-items: center; height: 12rem;',
        children: [
            dropdown,
            { span: { style: 'font-size: 0.875rem; opacity: 0.7;', children: [() => `Selected: ${selected.value}`] } }
        ]
    }
};

$('#example').content(demo);</code></pre>
                            </div>
                        </div>
                    </div>

                    <!-- Props Table -->
                    <h2 class="text-xl font-bold" style="margin-bottom: 1rem;">Props</h2>
                    <div style="overflow-x: auto; margin-bottom: 2rem;">
                        <table class="table table-zebra">
                            <thead>
                                <tr>
                                    <th>Prop</th>
                                    <th>Type</th>
                                    <th>Default</th>
                                    <th>Description</th>
                                </tr>
                            </thead>
                            <tbody>
                                <tr>
                                    <td><code>position</code></td>
                                    <td>string</td>
                                    <td>-</td>
                                    <td>'top' | 'bottom' | 'left' | 'right' | 'end'</td>
                                </tr>
                                <tr>
                                    <td><code>hover</code></td>
                                    <td>boolean</td>
                                    <td>false</td>
                                    <td>Open on hover instead of click</td>
                                </tr>
                                <tr>
                                    <td><code>open</code></td>
                                    <td>boolean</td>
                                    <td>false</td>
                                    <td>Force open state</td>
                                </tr>
                            </tbody>
                        </table>
                    </div>

                    <!-- Sub-components -->
                    <h2 class="text-xl font-bold" style="margin-bottom: 1rem;">Sub-components</h2>
                    <div style="overflow-x: auto; margin-bottom: 2rem;">
                        <table class="table table-zebra">
                            <thead>
                                <tr>
                                    <th>Component</th>
                                    <th>Description</th>
                                </tr>
                            </thead>
                            <tbody>
                                <tr>
                                    <td><code>Dropdown.Trigger</code></td>
                                    <td>The clickable element that toggles the dropdown</td>
                                </tr>
                                <tr>
                                    <td><code>Dropdown.Content</code></td>
                                    <td>The menu/content container</td>
                                </tr>
                                <tr>
                                    <td><code>Dropdown.Item</code></td>
                                    <td>Individual menu item</td>
                                </tr>
                            </tbody>
                        </table>
                    </div>

                    <!-- Positions -->
                    <h2 class="text-xl font-bold" style="margin-bottom: 1rem;">Positions</h2>
                    <div
                        style="display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; margin-bottom: 2rem; padding-top: 8rem; padding-bottom: 8rem;">
                        <div class="dropdown dropdown-bottom">
                            <div tabindex="0" role="button" class="btn">Bottom</div>
                            <ul tabindex="0" class="dropdown-content menu"
                                style="background-color: oklch(var(--b1)); border-radius: var(--rounded-box, 1rem); z-index: 10; width: 13rem; padding: 0.5rem; box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);">
                                <li><a>Item</a></li>
                            </ul>
                        </div>
                        <div class="dropdown dropdown-top">
                            <div tabindex="0" role="button" class="btn">Top</div>
                            <ul tabindex="0" class="dropdown-content menu"
                                style="background-color: oklch(var(--b1)); border-radius: var(--rounded-box, 1rem); z-index: 10; width: 13rem; padding: 0.5rem; box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);">
                                <li><a>Item</a></li>
                            </ul>
                        </div>
                        <div class="dropdown dropdown-left">
                            <div tabindex="0" role="button" class="btn">Left</div>
                            <ul tabindex="0" class="dropdown-content menu"
                                style="background-color: oklch(var(--b1)); border-radius: var(--rounded-box, 1rem); z-index: 10; width: 13rem; padding: 0.5rem; box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);">
                                <li><a>Item</a></li>
                            </ul>
                        </div>
                        <div class="dropdown dropdown-right">
                            <div tabindex="0" role="button" class="btn">Right</div>
                            <ul tabindex="0" class="dropdown-content menu"
                                style="background-color: oklch(var(--b1)); border-radius: var(--rounded-box, 1rem); z-index: 10; width: 13rem; padding: 0.5rem; box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);">
                                <li><a>Item</a></li>
                            </ul>
                        </div>
                    </div>

                    <!-- Hover -->
                    <h2 class="text-xl font-bold" style="margin-bottom: 1rem;">Hover</h2>
                    <div class="dropdown dropdown-hover" style="margin-bottom: 2rem; height: 8rem;">
                        <div tabindex="0" role="button" class="btn" style="margin: 0.25rem;">Hover me</div>
                        <ul tabindex="0" class="dropdown-content menu"
                            style="background-color: oklch(var(--b1)); border-radius: var(--rounded-box, 1rem); z-index: 10; width: 13rem; padding: 0.5rem; box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);">
                            <li><a>Item 1</a></li>
                            <li><a>Item 2</a></li>
                        </ul>
                    </div>
                </div>
            </div>
        </div>
    </div>