295 lines
10 KiB
JavaScript
295 lines
10 KiB
JavaScript
// Side navigation component.
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// Desktop : sidebar fixe à gauche dans le flux flex.
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// Mobile (≤768px) : overlay depuis la gauche, déclenché par un bouton hamburger
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// inséré dans <header>. Géométrie gérée en inline style pour
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// éviter les conflits de spécificité avec le shadow DOM.
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const HAMBURGER_ICON = `<svg width="18" height="18" viewBox="0 0 24 24" fill="none"
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stroke="currentColor" stroke-width="2.5" stroke-linecap="round">
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<line x1="3" y1="6" x2="21" y2="6"/>
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<line x1="3" y1="12" x2="21" y2="12"/>
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<line x1="3" y1="18" x2="21" y2="18"/>
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</svg>`
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const CHEVRON_ICON = `<svg width="12" height="12" viewBox="0 0 24 24" fill="none"
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stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round">
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<polyline points="9 18 15 12 9 6"/>
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</svg>`
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const CSS = new URL('./side-nav.css', import.meta.url).href
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const MQ = window.matchMedia('(max-width: 768px)')
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const NAV_W = 220 // px
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const ICON_FALLBACK = `<svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><circle cx="12" cy="12" r="9"/></svg>`
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const iconsRes = await fetch('./icons.json')
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const ICONS = iconsRes.ok ? await iconsRes.json() : {}
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function resolveIcon(name) {
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return ICONS[name] ?? ICON_FALLBACK
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}
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class SideNav extends HTMLElement {
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#items = []
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#expanded = new Set()
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#hamburger = null
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#backdrop = null
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#mqHandler = null
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#hashHandler = null
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#isMobile = false
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#readyResolve = null
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// Resolves once navigation.json is loaded and the nav is rendered.
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// Await this before calling setGroupChildren().
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ready = new Promise(r => { this.#readyResolve = r })
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async connectedCallback() {
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this.attachShadow({ mode: 'open' })
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const navPath = this.dataset.src ?? './navigation.json'
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const response = await fetch(navPath)
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if (!response.ok) throw new Error(`side-nav: failed to load ${navPath}`)
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this.#items = await response.json()
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// Auto-expand groups that contain the active route
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const current = this.#currentHref()
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for (const item of this.#items) {
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if (item.type === 'group' && item.children?.some(c => c.href === current)) {
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this.#expanded.add(item.label)
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}
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}
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this.#render()
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this.#readyResolve()
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this.#mqHandler = () => this.#applyMode()
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this.#hashHandler = () => this.#updateActive()
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MQ.addEventListener('change', this.#mqHandler)
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window.addEventListener('hashchange', this.#hashHandler)
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this.#applyMode()
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}
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disconnectedCallback() {
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MQ.removeEventListener('change', this.#mqHandler)
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window.removeEventListener('hashchange', this.#hashHandler)
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this.#removeHamburger()
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this.#removeBackdrop()
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}
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// ── Public API ──────────────────────────────────────────────────────────────
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// Inject dynamic children into an existing group (identified by label).
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// Call after awaiting nav.ready.
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setGroupChildren(label, children) {
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const group = this.#items.find(i => i.type === 'group' && i.label === label)
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if (!group) return
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group.children = children
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this.#render()
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}
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// ── Rendu des items ─────────────────────────────────────────────────────────
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#currentHref() {
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return window.location.hash || `#/${this.#items[0]?.href?.replace(/^#\//, '') ?? 'dashboard'}`
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}
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// Update active state without re-rendering the whole nav.
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#updateActive() {
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const current = this.#currentHref()
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this.shadowRoot?.querySelectorAll('.item').forEach(a =>
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a.classList.toggle('active', a.getAttribute('href') === current)
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)
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this.shadowRoot?.querySelectorAll('.group-header').forEach(btn => {
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const item = this.#items.find(i => i.label === btn.dataset.group)
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const hasActive = item?.children?.some(c => c.href === current) ?? false
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btn.classList.toggle('has-active', hasActive)
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// Auto-expand if a child becomes active
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if (hasActive && !this.#expanded.has(item.label)) {
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this.#expanded.add(item.label)
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btn.querySelector('.chevron')?.classList.add('open')
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btn.nextElementSibling?.classList.add('open')
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}
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})
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}
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#toggleGroup(label) {
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const isOpen = this.#expanded.has(label)
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isOpen ? this.#expanded.delete(label) : this.#expanded.add(label)
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const btn = this.shadowRoot.querySelector(`[data-group="${label}"]`)
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const children = btn?.nextElementSibling
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btn?.querySelector('.chevron')?.classList.toggle('open', !isOpen)
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children?.classList.toggle('open', !isOpen)
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}
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#renderItem(item, current) {
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if (item.type === 'separator') {
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return `<div class="separator"></div>`
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}
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if (item.type === 'section') {
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return `<div class="section-header">${item.label ?? ''}</div>`
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}
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if (item.type === 'group') {
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const isOpen = this.#expanded.has(item.label)
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const hasActive = item.children?.some(c => c.href === current) ?? false
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const children = (item.children ?? []).map(child => {
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const active = child.href === current
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return `<a href="${child.href}" class="item child ${active ? 'active' : ''}">
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<span class="icon">${resolveIcon(child.icon)}</span>
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<span class="label">${child.label}</span>
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</a>`
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}).join('')
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return `
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<div class="group">
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<button class="group-header ${hasActive ? 'has-active' : ''}" data-group="${item.label}">
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<span class="icon">${resolveIcon(item.icon)}</span>
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<span class="label">${item.label}</span>
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<span class="chevron ${isOpen ? 'open' : ''}">${CHEVRON_ICON}</span>
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</button>
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<div class="group-children ${isOpen ? 'open' : ''}">
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<div>${children}</div>
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</div>
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</div>`
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}
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// Default: leaf link
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if (!item.href || !item.label) return ''
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const active = item.href === current
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return `<a href="${item.href}" class="item ${active ? 'active' : ''}">
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<span class="icon">${resolveIcon(item.icon)}</span>
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<span class="label">${item.label}</span>
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</a>`
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}
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#render() {
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const current = this.#currentHref()
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const links = this.#items.map(item => this.#renderItem(item, current)).join('')
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this.shadowRoot.innerHTML = `
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<link rel="stylesheet" href="${CSS}">
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${links}
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`
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// Group toggle
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this.shadowRoot.querySelectorAll('.group-header').forEach(btn =>
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btn.addEventListener('click', () => this.#toggleGroup(btn.dataset.group))
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)
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// Fermer l'overlay sur tap d'un lien (mobile)
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this.shadowRoot.querySelectorAll('.item').forEach(a =>
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a.addEventListener('click', () => { if (this.#isMobile) this.#close() })
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)
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}
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// ── Basculement desktop / mobile ────────────────────────────────────────────
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#applyMode() {
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if (MQ.matches) this.#toMobile()
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else this.#toDesktop()
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}
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#toMobile() {
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this.#isMobile = true
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// inline style = spécificité maximale, pas de conflit avec le shadow DOM
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Object.assign(this.style, {
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position: 'fixed',
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top: '0',
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left: '0',
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width: `${NAV_W}px`,
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minWidth: `${NAV_W}px`,
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height: '100vh',
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zIndex: '500',
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transform: 'translateX(-100%)',
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transition: 'transform 0.25s cubic-bezier(0.4,0,0.2,1)',
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overflow: 'hidden',
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boxShadow: '4px 0 24px rgba(0,0,0,0.45)',
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})
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this.#addHamburger()
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}
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#toDesktop() {
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this.#isMobile = false
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// Réinitialise tous les styles inline → shadow DOM reprend le contrôle
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this.style.cssText = ''
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this.#removeHamburger()
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this.#removeBackdrop()
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}
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// ── Hamburger ───────────────────────────────────────────────────────────────
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#addHamburger() {
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if (this.#hamburger) return
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const btn = document.createElement('button')
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btn.innerHTML = HAMBURGER_ICON
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btn.setAttribute('aria-label', 'Menu')
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btn.setAttribute('data-sidenav-toggle', '')
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Object.assign(btn.style, {
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display: 'inline-flex',
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alignItems: 'center',
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justifyContent: 'center',
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background: 'transparent',
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border: '1px solid #313244',
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borderRadius: '6px',
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padding: '7px',
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color: '#a6adc8',
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cursor: 'pointer',
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minWidth: '36px',
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minHeight: '36px',
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flexShrink: '0',
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})
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btn.addEventListener('click', () => this.#toggle())
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this.#hamburger = btn
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// Insère après le h1 dans le header, ou en premier si pas de h1
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const header = document.querySelector('header')
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if (!header) { document.body.prepend(btn); return }
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const h1 = header.querySelector('h1')
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h1 ? h1.after(btn) : header.prepend(btn)
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}
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#removeHamburger() {
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this.#hamburger?.remove()
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this.#hamburger = null
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}
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// ── Open / Close (mobile) ───────────────────────────────────────────────────
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#toggle() { this.#isMobile && (this.style.transform === 'translateX(0px)'
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? this.#close() : this.#open()) }
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#open() {
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this.style.transform = 'translateX(0)'
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const bd = document.createElement('div')
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Object.assign(bd.style, {
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position: 'fixed',
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inset: '0',
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background: 'rgba(0,0,0,0)',
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zIndex: '499',
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transition: 'background 0.25s',
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})
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bd.addEventListener('click', () => this.#close())
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document.body.appendChild(bd)
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this.#backdrop = bd
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requestAnimationFrame(() => { bd.style.background = 'rgba(0,0,0,0.45)' })
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}
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#close() {
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this.style.transform = 'translateX(-100%)'
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this.#removeBackdrop()
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}
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#removeBackdrop() {
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if (!this.#backdrop) return
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const bd = this.#backdrop
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this.#backdrop = null
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bd.style.background = 'rgba(0,0,0,0)'
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bd.addEventListener('transitionend', () => bd.remove(), { once: true })
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}
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}
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customElements.define('side-nav', SideNav)
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