mirror of
https://github.com/ranaldsgift/KefinTweaks.git
synced 2026-11-05 15:52:47 +01:00
660 lines
24 KiB
JavaScript
660 lines
24 KiB
JavaScript
/**
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* Generic Modal System for Jellyfin-style dialogs
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* Provides reusable modal functionality similar to cardBuilder.js
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*/
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window.ModalSystem = (function() {
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'use strict';
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// Store active modals
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const activeModals = new Map();
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// Body scroll lock while any kefin modal is open (replaces non-passive wheel trap)
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let bodyScrollLockCount = 0;
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let savedBodyOverflow = null;
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let savedHtmlOverflow = null;
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const FOCUSABLE_SELECTOR = [
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'button:not([disabled]):not([tabindex="-1"])',
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'[href]:not([tabindex="-1"])',
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'input:not([disabled]):not([type="hidden"]):not([tabindex="-1"])',
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'select:not([disabled]):not([tabindex="-1"])',
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'textarea:not([disabled]):not([tabindex="-1"])',
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'[tabindex]:not([tabindex="-1"])',
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'[role="button"]:not([tabindex="-1"])',
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].join(',');
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function isTvLayout() {
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return document.documentElement.classList.contains('layout-tv');
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}
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function lockBodyScroll() {
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if (bodyScrollLockCount === 0) {
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savedBodyOverflow = document.body.style.overflow;
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savedHtmlOverflow = document.documentElement.style.overflow;
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document.body.style.overflow = 'hidden';
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document.documentElement.style.overflow = 'hidden';
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}
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bodyScrollLockCount++;
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}
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function unlockBodyScroll() {
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if (bodyScrollLockCount <= 0) return;
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bodyScrollLockCount--;
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if (bodyScrollLockCount === 0) {
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document.body.style.overflow = savedBodyOverflow || '';
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document.documentElement.style.overflow = savedHtmlOverflow || '';
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savedBodyOverflow = null;
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savedHtmlOverflow = null;
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}
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}
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/**
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* Apply Jellyfin's scaleup open animation and clear it when finished.
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* Clearing avoids a stuck compositor layer that leaves large dialogs soft/blurry.
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* @param {HTMLElement} dialog
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*/
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function applyOpenAnimation(dialog) {
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if (!dialog) return;
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dialog.style.animation = '160ms ease-out 0s 1 normal both running scaleup';
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const onEnd = (e) => {
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if (e.target !== dialog) return;
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if (e.animationName && e.animationName !== 'scaleup') return;
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dialog.style.animation = '';
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dialog.removeEventListener('animationend', onEnd);
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};
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dialog.addEventListener('animationend', onEnd);
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}
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function getFocusableElements(root) {
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if (!root) return [];
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return Array.from(root.querySelectorAll(FOCUSABLE_SELECTOR)).filter((el) => {
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if (el.closest('[hidden], [aria-hidden="true"]')) return false;
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const style = window.getComputedStyle(el);
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if (style.display === 'none' || style.visibility === 'hidden') return false;
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if (el.disabled) return false;
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return true;
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});
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}
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function stampShowFocus(root) {
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if (!root || !isTvLayout()) return;
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root.querySelectorAll('button, a.emby-button, .emby-button, .paper-icon-button-light, [role="button"]').forEach((el) => {
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if (el.getAttribute('tabindex') === '-1') return;
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el.classList.add('show-focus');
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});
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}
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function resolveInitialFocus(root, initialFocus) {
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if (!root) return null;
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if (initialFocus instanceof HTMLElement && root.contains(initialFocus)) {
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return initialFocus;
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}
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if (typeof initialFocus === 'string') {
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const bySelector = root.querySelector(initialFocus);
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if (bySelector) return bySelector;
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}
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return (
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root.querySelector('[data-autofocus]') ||
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root.querySelector('.is-active') ||
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root.querySelector('.selected') ||
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getFocusableElements(root)[0] ||
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null
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);
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}
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/**
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* Position a dialog near an anchor (fixed coords, viewport-clamped).
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* @param {HTMLElement} dialog
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* @param {HTMLElement} anchor
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*/
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function positionNearAnchor(dialog, anchor) {
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if (!dialog || !anchor) return;
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const margin = 8;
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const gap = 8;
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const edgeMargin = 16;
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const btnRect = anchor.getBoundingClientRect();
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const dialogWidth = dialog.offsetWidth || dialog.getBoundingClientRect().width || 200;
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const dialogHeight = dialog.offsetHeight || dialog.getBoundingClientRect().height || 120;
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const spaceBelow = window.innerHeight - btnRect.bottom - margin;
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const spaceAbove = btnRect.top - margin;
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const placeBelow = spaceBelow >= Math.min(spaceAbove, 160) || spaceBelow >= spaceAbove;
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let left = btnRect.left;
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left = Math.min(
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Math.max(edgeMargin, left),
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Math.max(edgeMargin, window.innerWidth - dialogWidth - edgeMargin),
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);
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let top;
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if (placeBelow) {
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top = btnRect.bottom + gap;
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} else {
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top = Math.max(margin, btnRect.top - gap - dialogHeight);
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}
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top = Math.min(Math.max(top, margin), window.innerHeight - Math.min(dialogHeight, window.innerHeight - margin * 2) - margin);
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dialog.style.position = 'fixed';
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dialog.style.left = `${left}px`;
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dialog.style.top = `${top}px`;
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dialog.style.margin = '0';
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dialog.style.right = 'auto';
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dialog.style.bottom = 'auto';
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}
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function focusElement(el) {
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if (!el || typeof el.focus !== 'function') return;
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try {
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el.focus({ preventScroll: true });
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} catch (_) {
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el.focus();
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}
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}
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function owningDialog(el) {
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return el && typeof el.closest === 'function' ? el.closest('.dialog') : null;
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}
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function getFocusRows(dialogEl) {
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const rows = Array.from(dialogEl.querySelectorAll('[data-kefin-focus-row]'));
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const withItems = rows.map((row) => ({
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row,
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items: getFocusableElements(row).filter((el) => el.closest('[data-kefin-focus-row]') === row),
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})).filter((entry) => entry.items.length);
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withItems.sort((a, b) => {
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const at = a.row.getBoundingClientRect();
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const bt = b.row.getBoundingClientRect();
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if (Math.abs(at.top - bt.top) > 4) return at.top - bt.top;
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return at.left - bt.left;
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});
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return withItems;
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}
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/**
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* Attach focus trap to a dialog element. Returns a dispose function.
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* @param {HTMLElement} dialogEl
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* @param {{ returnFocusEl?: HTMLElement|null, initialFocusEl?: HTMLElement|string|null, onEscape?: Function|null }} options
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*/
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function attachFocusTrap(dialogEl, options = {}) {
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if (!dialogEl) return () => {};
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const returnFocusEl = options.returnFocusEl || null;
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const onEscape = typeof options.onEscape === 'function' ? options.onEscape : null;
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dialogEl.classList.add('focuscontainer');
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stampShowFocus(dialogEl);
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const focusInitial = () => {
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const target = resolveInitialFocus(dialogEl, options.initialFocusEl);
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if (target) {
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focusElement(target);
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} else if (typeof dialogEl.focus === 'function') {
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if (!dialogEl.hasAttribute('tabindex')) dialogEl.setAttribute('tabindex', '-1');
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focusElement(dialogEl);
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}
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};
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requestAnimationFrame(() => {
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requestAnimationFrame(focusInitial);
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});
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const keydownHandler = (e) => {
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if (!dialogEl.isConnected) return;
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const active = document.activeElement;
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const activeDialog = owningDialog(active);
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// Nested/child modal owns keys until it closes
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if (activeDialog && activeDialog !== dialogEl) return;
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const isNavKey = e.key === 'ArrowDown' || e.key === 'ArrowUp'
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|| e.key === 'ArrowLeft' || e.key === 'ArrowRight'
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|| e.key === 'Tab';
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if (!dialogEl.contains(active) && e.key !== 'Escape') {
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if (isNavKey) {
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e.preventDefault();
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e.stopPropagation();
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if (typeof e.stopImmediatePropagation === 'function') e.stopImmediatePropagation();
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focusInitial();
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}
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return;
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}
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if (e.key === 'Escape') {
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e.preventDefault();
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e.stopPropagation();
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if (typeof e.stopImmediatePropagation === 'function') e.stopImmediatePropagation();
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if (onEscape) onEscape(e);
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return;
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}
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const focusables = getFocusableElements(dialogEl);
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if (!focusables.length) return;
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const currentIndex = focusables.indexOf(active);
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const at = currentIndex >= 0 ? currentIndex : 0;
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const rows = getFocusRows(dialogEl);
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const useRows = rows.length >= 2;
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const consume = () => {
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e.preventDefault();
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e.stopPropagation();
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if (typeof e.stopImmediatePropagation === 'function') e.stopImmediatePropagation();
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};
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if (e.key === 'Tab') {
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consume();
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const next = e.shiftKey
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? focusables[(at - 1 + focusables.length) % focusables.length]
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: focusables[(at + 1) % focusables.length];
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focusElement(next);
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return;
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}
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if (useRows && (e.key === 'ArrowLeft' || e.key === 'ArrowRight' || e.key === 'ArrowUp' || e.key === 'ArrowDown')) {
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consume();
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let rowIndex = rows.findIndex((entry) => entry.items.includes(active));
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if (rowIndex < 0) {
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rowIndex = rows.findIndex((entry) => entry.row.contains(active));
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}
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if (rowIndex < 0) rowIndex = 0;
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const row = rows[rowIndex];
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let col = row.items.indexOf(active);
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if (col < 0) col = 0;
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if (e.key === 'ArrowLeft' || e.key === 'ArrowRight') {
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const nextCol = e.key === 'ArrowRight'
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? (col + 1) % row.items.length
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: (col - 1 + row.items.length) % row.items.length;
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focusElement(row.items[nextCol]);
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return;
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}
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const nextRowIndex = e.key === 'ArrowDown'
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? (rowIndex + 1) % rows.length
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: (rowIndex - 1 + rows.length) % rows.length;
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const nextRow = rows[nextRowIndex];
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const nextCol = Math.min(col, nextRow.items.length - 1);
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focusElement(nextRow.items[nextCol]);
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return;
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}
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if (e.key === 'ArrowDown' || e.key === 'ArrowRight') {
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consume();
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focusElement(focusables[(at + 1) % focusables.length]);
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return;
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}
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if (e.key === 'ArrowUp' || e.key === 'ArrowLeft') {
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consume();
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focusElement(focusables[(at - 1 + focusables.length) % focusables.length]);
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}
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};
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// Document capture so Left/Right are not taken by Jellyfin spatial navigation
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document.addEventListener('keydown', keydownHandler, true);
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return () => {
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document.removeEventListener('keydown', keydownHandler, true);
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if (returnFocusEl && typeof returnFocusEl.focus === 'function' && document.contains(returnFocusEl)) {
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focusElement(returnFocusEl);
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}
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};
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}
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/**
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* Create a Jellyfin-style modal dialog
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* @param {Object} options - Modal configuration
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* @returns {Object} Modal instance
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*/
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function createModal(options = {}) {
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const {
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id,
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title,
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content,
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footer,
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onClose,
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onOpen,
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closeOnBackdrop = true,
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closeOnEscape = true,
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showCloseButton = true,
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fixedSize,
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dialogStyle,
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returnFocus,
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initialFocus,
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trapFocus,
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anchor = null,
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dialogClassName = '',
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} = options;
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if (!id) {
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throw new Error('Modal ID is required');
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}
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// Remove existing modal if it exists
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removeModal(id);
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const useFixedSize = fixedSize === true
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|| (fixedSize !== false && typeof window !== 'undefined' && window.innerWidth < 900);
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let _showCloseButton = showCloseButton;
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if (title == null && showCloseButton === false) {
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_showCloseButton = false;
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} else if (window.innerWidth < 900 && useFixedSize && showCloseButton !== false && title) {
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_showCloseButton = true;
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}
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const shouldTrap = trapFocus === true || (trapFocus !== false && isTvLayout());
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const returnFocusEl =
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returnFocus instanceof HTMLElement
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? returnFocus
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: document.activeElement instanceof HTMLElement
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? document.activeElement
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: null;
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// Create modal elements
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const backdrop = document.createElement('div');
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backdrop.className = 'dialogBackdrop dialogBackdropOpened';
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backdrop.setAttribute('data-modal-id', id);
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const dialogContainer = document.createElement('div');
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dialogContainer.className = 'dialogContainer';
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dialogContainer.setAttribute('data-modal-id', id);
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const dialog = document.createElement('div');
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const extraClasses = dialogClassName ? ` ${dialogClassName}` : '';
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dialog.className = `focuscontainer dialog smoothScrollY ui-body-a background-theme-a formDialog ${useFixedSize ? 'dialog-fixedSize' : 'centeredDialog'} opened${extraClasses}`;
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dialog.setAttribute('data-history', 'true');
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dialog.setAttribute('data-autofocus', 'true');
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dialog.setAttribute('data-removeonclose', 'true');
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dialog.setAttribute('data-name', 'kefin-modal');
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dialog.style.display = 'flex';
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dialog.style.flexDirection = 'column';
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if (!useFixedSize) {
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dialog.style.maxHeight = '90vh';
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}
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// Final box size before scaleup so the compositor layer is not soft-scaled after open
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if (dialogStyle && typeof dialogStyle === 'object') {
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Object.assign(dialog.style, dialogStyle);
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}
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applyOpenAnimation(dialog);
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// Create header if title is provided
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let dialogHeader = null;
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if (title || _showCloseButton) {
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dialogHeader = document.createElement('div');
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dialogHeader.className = 'formDialogHeader';
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dialogHeader.style.display = 'flex';
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dialogHeader.style.justifyContent = 'space-between';
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dialogHeader.style.alignItems = 'center';
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dialogHeader.style.padding = '1.25em 1.5em';
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dialogHeader.style.borderBottom = '1px solid rgba(255,255,255,0.1)';
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dialogHeader.style.flexShrink = '0';
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if (title) {
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const titleElement = document.createElement('h2');
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titleElement.style.margin = '0';
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titleElement.style.textAlign = 'left';
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titleElement.textContent = title;
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dialogHeader.appendChild(titleElement);
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}
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if (_showCloseButton) {
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const closeButton = document.createElement('button');
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closeButton.setAttribute('is', 'paper-icon-button-light');
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closeButton.className = 'btnCancel btnClose autoSize paper-icon-button-light';
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closeButton.setAttribute('tabindex', '-1');
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closeButton.title = 'Close';
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closeButton.onclick = () => closeModal(id);
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const closeIcon = document.createElement('span');
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closeIcon.className = 'material-icons close';
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closeIcon.setAttribute('aria-hidden', 'true');
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closeButton.appendChild(closeIcon);
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dialogHeader.appendChild(closeButton);
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}
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if (dialogHeader.childNodes.length > 0) {
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dialog.appendChild(dialogHeader);
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}
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}
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// Create scrollable content area
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const dialogContent = document.createElement('div');
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dialogContent.style.padding = '1.25em 1.5em';
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dialogContent.style.overflowY = 'auto';
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dialogContent.style.flex = '1';
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dialogContent.style.minHeight = '0';
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// Contain overscroll so nested wheel/touch scroll does not chain to the page
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// (avoids a non-passive wheel listener that delays input while the main thread is busy)
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dialogContent.style.overscrollBehavior = 'contain';
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dialog.style.overscrollBehavior = 'contain';
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// Add content
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if (content) {
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if (typeof content === 'string') {
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dialogContent.innerHTML = content;
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} else if (content instanceof HTMLElement) {
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dialogContent.appendChild(content);
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}
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}
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// Create footer if provided
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let dialogFooter = null;
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if (footer) {
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dialogFooter = document.createElement('div');
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dialogFooter.className = 'formDialogFooter kefinModalFooter';
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dialogFooter.style.padding = '1.25em 1.5em';
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dialogFooter.style.borderTop = '1px solid rgba(255,255,255,0.1)';
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dialogFooter.style.flexShrink = '0';
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if (typeof footer === 'string') {
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dialogFooter.innerHTML = footer;
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} else if (footer instanceof HTMLElement) {
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dialogFooter.appendChild(footer);
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}
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dialog.dataset.footer = footer ? 'true' : 'false';
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}
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// Assemble modal
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dialogContent.setAttribute('data-name', 'kefin-modal-content');
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dialog.appendChild(dialogContent);
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if (dialogFooter) {
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dialog.appendChild(dialogFooter);
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}
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dialogContainer.appendChild(dialog);
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// Add to DOM
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// Check if the modal backdrop is already in the DOM
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if (!document.body.querySelector('.dialogBackdrop')) {
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document.body.appendChild(backdrop);
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}
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document.body.appendChild(dialogContainer);
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// Create modal instance
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const modalInstance = {
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id,
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backdrop,
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dialogContainer,
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dialog,
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dialogContent,
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dialogHeader,
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dialogFooter,
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isOpen: true,
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onClose: typeof onClose === 'function' ? onClose : null,
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returnFocusEl,
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close: () => closeModal(id),
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updateContent: (newContent) => updateModalContent(id, newContent),
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addEventListener: (event, handler) => {
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dialog.addEventListener(event, handler);
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},
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_disposeFocusTrap: null,
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_escapeHandler: null,
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};
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// Store modal instance
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activeModals.set(id, modalInstance);
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//lockBodyScroll();
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// Add event listeners
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if (closeOnBackdrop) {
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backdrop.addEventListener('click', () => closeModal(id));
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dialogContainer.addEventListener('click', (e) => {
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if (e.target === dialogContainer) {
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closeModal(id);
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}
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});
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}
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if (closeOnEscape && !shouldTrap) {
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const escapeHandler = (e) => {
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if (e.key === 'Escape') {
|
|
closeModal(id);
|
|
}
|
|
};
|
|
document.addEventListener('keydown', escapeHandler);
|
|
modalInstance._escapeHandler = escapeHandler;
|
|
}
|
|
|
|
if (anchor instanceof HTMLElement) {
|
|
dialog.classList.remove('centeredDialog', 'formDialog', 'smoothScrollY', 'dialog-fixedSize');
|
|
dialog.style.maxHeight = 'none';
|
|
if (dialogContent) {
|
|
dialogContent.style.padding = dialogContent.style.padding || '0.25em 0';
|
|
}
|
|
requestAnimationFrame(() => {
|
|
positionNearAnchor(dialog, anchor);
|
|
});
|
|
}
|
|
|
|
if (shouldTrap) {
|
|
modalInstance._disposeFocusTrap = attachFocusTrap(dialog, {
|
|
returnFocusEl,
|
|
initialFocusEl: initialFocus,
|
|
onEscape: closeOnEscape ? () => closeModal(id) : null,
|
|
});
|
|
} else if (isTvLayout()) {
|
|
stampShowFocus(dialog);
|
|
}
|
|
|
|
// Call onOpen callback
|
|
if (onOpen && typeof onOpen === 'function') {
|
|
onOpen(modalInstance);
|
|
}
|
|
|
|
return modalInstance;
|
|
}
|
|
|
|
/**
|
|
* Close a modal by ID
|
|
* @param {string} id - Modal ID
|
|
*/
|
|
function closeModal(id) {
|
|
const modal = activeModals.get(id);
|
|
if (!modal) return;
|
|
|
|
// Remove escape handler if it exists
|
|
if (modal._escapeHandler) {
|
|
document.removeEventListener('keydown', modal._escapeHandler);
|
|
modal._escapeHandler = null;
|
|
}
|
|
|
|
if (typeof modal._disposeFocusTrap === 'function') {
|
|
modal._disposeFocusTrap();
|
|
modal._disposeFocusTrap = null;
|
|
} else if (modal.returnFocusEl && typeof modal.returnFocusEl.focus === 'function' && document.contains(modal.returnFocusEl)) {
|
|
try {
|
|
modal.returnFocusEl.focus({ preventScroll: true });
|
|
} catch (_) {
|
|
modal.returnFocusEl.focus();
|
|
}
|
|
}
|
|
|
|
// Remove from DOM
|
|
if (modal.backdrop && modal.backdrop.parentNode) {
|
|
modal.backdrop.parentNode.removeChild(modal.backdrop);
|
|
}
|
|
if (modal.dialogContainer && modal.dialogContainer.parentNode) {
|
|
modal.dialogContainer.parentNode.removeChild(modal.dialogContainer);
|
|
}
|
|
|
|
// Remove from active modals
|
|
activeModals.delete(id);
|
|
//unlockBodyScroll();
|
|
|
|
// Call onClose callback if modal instance has it
|
|
if (modal.onClose && typeof modal.onClose === 'function') {
|
|
modal.onClose();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Remove a modal by ID (force removal)
|
|
* @param {string} id - Modal ID
|
|
*/
|
|
function removeModal(id) {
|
|
const modal = activeModals.get(id);
|
|
if (modal) {
|
|
closeModal(id);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Update modal content
|
|
* @param {string} id - Modal ID
|
|
* @param {string|HTMLElement} content - New content
|
|
*/
|
|
function updateModalContent(id, content) {
|
|
const modal = activeModals.get(id);
|
|
if (!modal) return;
|
|
|
|
if (typeof content === 'string') {
|
|
modal.dialogContent.innerHTML = content;
|
|
} else if (content instanceof HTMLElement) {
|
|
modal.dialogContent.innerHTML = '';
|
|
modal.dialogContent.appendChild(content);
|
|
}
|
|
stampShowFocus(modal.dialog);
|
|
}
|
|
|
|
/**
|
|
* Check if a modal is open
|
|
* @param {string} id - Modal ID
|
|
* @returns {boolean}
|
|
*/
|
|
function isModalOpen(id) {
|
|
return activeModals.has(id);
|
|
}
|
|
|
|
/**
|
|
* Get all active modal IDs
|
|
* @returns {Array<string>}
|
|
*/
|
|
function getActiveModalIds() {
|
|
return Array.from(activeModals.keys());
|
|
}
|
|
|
|
/**
|
|
* Close all modals
|
|
*/
|
|
function closeAllModals() {
|
|
const ids = Array.from(activeModals.keys());
|
|
ids.forEach(id => closeModal(id));
|
|
}
|
|
|
|
// Public API
|
|
return {
|
|
create: createModal,
|
|
close: closeModal,
|
|
remove: removeModal,
|
|
updateContent: updateModalContent,
|
|
isOpen: isModalOpen,
|
|
getActiveIds: getActiveModalIds,
|
|
closeAll: closeAllModals,
|
|
applyOpenAnimation,
|
|
attachFocusTrap,
|
|
positionNearAnchor,
|
|
getFocusableElements,
|
|
};
|
|
})();
|