mirror of
https://github.com/soapingtime/diyhrt.git
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704 lines
24 KiB
JavaScript
704 lines
24 KiB
JavaScript
/* These need to be here and run before DOMContentLoaded to prevent flash of unstyled content (FOUC) */
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/* Only <html> and <head> are available by this point (based on when script called in HTML) */
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// For preventing jump of scroll position on click when scrolled down in sidebar
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var toc_sidebar_no_scroll_jump = false;
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// Set theme if applicable
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if (is_local_storage_available() == true && localStorage.getItem('theme')) {
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document.documentElement.setAttribute('data-theme', localStorage.getItem('theme'));
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} else if (window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches == true) {
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document.documentElement.setAttribute('data-theme', 'dark');
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}
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// Set persistent header to hidden if applicable
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if (is_local_storage_available() == true && localStorage.getItem('persistent-header-hidden')) {
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if (localStorage.getItem('persistent-header-hidden') == 'true') {
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toggle_persistent_header(false);
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}
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}
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// Show sidebar if applicable
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if (is_local_storage_available() == true && localStorage.getItem('show-sidebar')) {
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if (localStorage.getItem('show-sidebar') == 'true' && is_mobile() == false) {
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toggle_sidebar(false);
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}
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// If no sidebar show setting and if screen is reasonably wide, then show it by default
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} else {
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if (window.matchMedia && is_mobile() == false) {
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var media_query = window.matchMedia('(min-width: 1250px)');
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if (media_query.matches == true) {
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toggle_sidebar(false);
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}
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}
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}
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window.addEventListener('DOMContentLoaded', function () {
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// Set first current sidebar section
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if (does_sidebar_exist() == true) {
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update_current_sidebar_section();
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}
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// Set up for Google Translate if applicable
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if (is_google_translate_open() == true) {
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// Get and set Google Translate bar height
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update_google_translate_bar_height();
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// Mutation observer to watch for and update upon changes of Google Translate bar show/hide
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var observer = new MutationObserver(update_google_translate_bar_height);
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observer.observe(document.body, { attributes: true, attributeFilter: ['style'] });
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}
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// Set up site event listeners (scroll, buttons, color scheme change, keyboard keys, etc.)
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set_up_site_event_listeners();
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return;
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});
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// Set up site event listeners
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function set_up_site_event_listeners() {
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/* Scroll, resize, fullscreen, and color scheme change listeners */
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// Page scroll listener
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window.addEventListener('scroll', function () {
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// Check and set persistent header status
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update_header_persistent_status();
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// Update sidebar current section
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if (does_sidebar_exist() == true) {
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update_current_sidebar_section();
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}
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return;
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});
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// Mobile change listener
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if (window.matchMedia) {
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matchMediaAddEventListener('(max-width: 900px)', function () {
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// If switching to mobile
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if (is_mobile() == true) {
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// Close sidebar if it's open
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if (is_sidebar_open() == true) {
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toggle_sidebar(false);
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}
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// If switching to desktop
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} else {
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// Open sidebar if it should be open
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if (is_sidebar_open() == false) {
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if (is_local_storage_available() == true && localStorage.getItem('show-sidebar') == 'true') {
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toggle_sidebar(false);
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}
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}
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}
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return;
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});
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}
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// Theme (light/dark mode) listener (follow system)
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if (window.matchMedia) {
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matchMediaAddEventListener('(prefers-color-scheme: dark)', function (event) {
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if (is_local_storage_available() == true && !localStorage.getItem('theme')) {
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var theme = event.matches == true ? 'dark' : 'light';
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if (theme == 'light') {
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document.documentElement.setAttribute('data-theme', 'light');
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} else {
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document.documentElement.setAttribute('data-theme', 'dark');
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}
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}
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return;
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});
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}
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/* Button listeners */
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// Theme (light/dark mode) button listener
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['mousedown', 'keydown'].forEach(function (event_type) {
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document.getElementById('theme-button').addEventListener(event_type, function (event) {
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// If keydown event and not Enter or Space key
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if (event_type == 'keydown' && event.code != 'Enter' && event.code != 'Space') { return; }
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// If mousedown event
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if (event_type == 'mousedown') {
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// Prevent setting button active and therefore outline
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event.preventDefault();
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// If not main mouse button (e.g., context menu)
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if (event.button != 0) {
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return;
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}
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}
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// Execute button action
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toggle_theme(true);
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return;
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});
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});
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// Theme (light/dark mode) button reset listener (context menu)
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document.getElementById('theme-button').addEventListener('contextmenu', function (event) {
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event.preventDefault();
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if (!window.confirm('Clear theme (light/dark mode) setting? (This will reset the theme setting to the default of follow system theme.)')) {
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return;
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}
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if (is_local_storage_available() == true) {
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localStorage.removeItem('theme');
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}
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if (window.matchMedia) {
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var media_query = window.matchMedia('(prefers-color-scheme: light)');
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if (media_query.matches == true) {
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document.documentElement.setAttribute('data-theme', 'light');
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} else {
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document.documentElement.setAttribute('data-theme', 'dark');
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}
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}
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// alert('Theme (light/dark mode) setting reset.');
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return;
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});
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// Translate button listener
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['mousedown', 'keydown'].forEach(function (event_type) {
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document.getElementById('language-button').addEventListener(event_type, function (event) {
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// If keydown event and not Enter or Space key
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if (event_type == 'keydown' && event.code != 'Enter' && event.code != 'Space') { return; }
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// If mousedown event
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if (event_type == 'mousedown') {
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// Prevent setting button active and therefore outline
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event.preventDefault();
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// If not main mouse button (e.g., context menu)
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if (event.button != 0) {
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return;
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}
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}
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// Execute button action
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// If Google Translate mode isn't already active
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if (is_google_translate_open() == false) {
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// Get user's preferred language from browser settings
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var preferred_language = String(navigator.language);
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// Need to get rid of country code but Chinese simplified vs. traditional are exceptions for Google Translate
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// https://cloud.google.com/translate/docs/languages
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if (preferred_language != 'zh-CN' && preferred_language != 'zh-TW') {
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preferred_language = preferred_language.split('-')[0];
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}
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// Fix Filipino (seems to be an exception with mismatched code here among many languages)
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// It's "Filipino" ("fil") in Chrome but "Tagalog" ("tl") in Firefox; Google Translate uses "tl"
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if (preferred_language == 'fil') {
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preferred_language = 'tl';
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}
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// Set Google Translate settings
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var source_language = 'auto'; // Must be 'auto' if trying to translate from 'en' to 'en' or will error
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var target_language = preferred_language;
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var interface_language = preferred_language;
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// Open Google Translate for the site
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window.open('https://translate.google.com/translate?sl=' + source_language + '&tl=' + target_language +
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'&hl=' + interface_language + '&u=' + window.location.href + '&client=webapp', '_self');
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// If Google Translate mode is active
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} else {
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var gtranslate_script = document.querySelector('[data-source-url]');
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// Other Google Translate data attributes of potential inerest: data-proxy-url, data-proxy-full-url, data-source-language, data-target-language, data-display-language, data-detected-source-language, data-is-source-untranslated, data-source-untranslated-url
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var return_url = gtranslate_script.getAttribute('data-source-url');
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// Fallback
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if (!return_url) {
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return_url = 'https://transfemscience.org' + window.location.pathname;
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}
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// Take user back to site (exit Google Translate)
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window.location.href = return_url;
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}
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return;
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});
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});
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// Search button listener
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['mousedown', 'keydown'].forEach(function (event_type) {
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document.getElementById('search-button').addEventListener(event_type, function (event) {
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// If keydown event and not Enter or Space key
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if (event_type == 'keydown' && event.code != 'Enter' && event.code != 'Space') { return; }
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// If mousedown event
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if (event_type == 'mousedown') {
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// Prevent setting button active and therefore outline
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event.preventDefault();
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// If not main mouse button (e.g., context menu)
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if (event.button != 0) {
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return;
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}
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}
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// Execute button action
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// Open search (Google Custom Search Engine) in a new tab
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// var search_url = 'https://cse.google.com/cse?cx=368ceeb2b0e46ce35';
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// The regex checks for either GitHub or Google Translate format (periods substituted with dashes)
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if (String(window.location.hostname).match(/[.-]github[.-]io/)) {
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var search_url = String(location.origin) + '/transfemscience' + '/search/' + window.location.search;
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} else {
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var search_url = String(location.origin) + '/search/' + window.location.search;
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}
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window.open(search_url, '_self');
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return;
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});
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});
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// Contents sidebar open/close button listener
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['sidebar-button', 'sidebar-button-standalone', 'toc-button-mobile'].forEach(function (element_id) {
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['mousedown', 'keydown'].forEach(function (event_type) {
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document.getElementById(element_id).addEventListener(event_type, function (event) {
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// If keydown event and not Enter or Space key
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if (event_type == 'keydown' && event.code != 'Enter' && event.code != 'Space') { return; }
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// If mousedown event
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if (event_type == 'mousedown') {
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// Prevent setting button active and therefore outline
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event.preventDefault();
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// If not main mouse button (e.g., context menu)
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if (event.button != 0) {
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return;
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}
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}
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// Execute button action
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toggle_sidebar(true);
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return;
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});
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});
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// Contents sidebar open/close button reset listener (context menu)
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document.getElementById(element_id).addEventListener('contextmenu', function (event) {
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event.preventDefault();
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if (!window.confirm('Clear sidebar show/hide by default setting?')) {
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return;
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}
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if (is_local_storage_available() == true) {
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localStorage.removeItem('show-sidebar');
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}
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// alert('Sidebar show/hide by default setting reset.');
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return;
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});
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});
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/*
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// Contents sidebar swipe left to close listener
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document.addEventListener('swiped-left', function (event) {
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// If sidebar is open and swiped element is not a table (with potential horizontal scroll)
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if (is_sidebar_open() == true && !event.target.closest('table')) {
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toggle_sidebar(true);
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} else {
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return;
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}
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});
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// Contents sidebar swipe right to open listener
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document.addEventListener('swiped-right', function (event) {
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// If sidebar is closed and swiped element is not a table (with potential horizontal scroll)
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if (is_sidebar_open() == false && !event.target.closest('table')) {
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toggle_sidebar(true);
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} else {
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return;
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}
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});
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*/
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// Contents sidebar item listeners
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var links = document.querySelectorAll('.toc-link');
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for (var i = 0; i < links.length; i++) {
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links[i].onclick = function (event) {
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// If mobile, hide contents menu after clicking a ToC link
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if (is_mobile() == true) {
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if (is_sidebar_open() == true) {
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// Prevent slide transition for sidebar hide
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document.documentElement.setAttribute('data-sidebar-slide-transition-disable', '');
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// Following a short delay (to show tap / link highlight)...
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setTimeout(function () {
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// Close the sidebar
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toggle_sidebar();
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// Reset prevent sidebar hide slide transition
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setTimeout(function () {
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document.documentElement.removeAttribute('data-sidebar-slide-transition-disable');
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}, 150);
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}, 100);
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}
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}
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// Hide anchor tag from URL in the case of sidebar #top link click
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if (event.target.hash == '#top') {
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window.scrollTo(0, 0);
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history.pushState({}, document.title, window.location.href.split('#')[0]);
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return false;
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}
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// Prevent jump of scroll position on click if scrolled down in sidebar
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toc_sidebar_no_scroll_jump = true;
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setInterval(function () {
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toc_sidebar_no_scroll_jump = false;
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}, 200);
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return;
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}
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}
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// Mobile menu open/close button listener
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['mousedown', 'keydown'].forEach(function (event_type) {
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document.getElementById('menu-button-mobile-menu').addEventListener(event_type, function (event) {
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// If keydown event and not Enter or Space key
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if (event_type == 'keydown' && event.code != 'Enter' && event.code != 'Space') { return; }
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// If mousedown event
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if (event_type == 'mousedown') {
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// Prevent setting button active and therefore outline
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event.preventDefault();
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// If not main mouse button (e.g., context menu)
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if (event.button != 0) {
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return;
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}
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}
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// Execute button action
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toggle_mobile_menu();
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return;
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});
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});
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// Persistent header hide/restore button listeners
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['hide-persistent-header-button', 'restore-persistent-header-button'].forEach(function (element_id) {
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['mousedown', 'keydown'].forEach(function (event_type) {
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document.getElementById(element_id).addEventListener(event_type, function (event) {
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// If keydown event and not Enter or Space key
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if (event_type == 'keydown' && event.code != 'Enter' && event.code != 'Space') { return; }
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// If mousedown event
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if (event_type == 'mousedown') {
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// Prevent setting button active and therefore outline
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event.preventDefault();
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// If not main mouse button (e.g., context menu)
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if (event.button != 0) {
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return;
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}
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}
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// Execute button action
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toggle_persistent_header(true);
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return;
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});
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});
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// Persistent header hide/restore button reset listeners (context menu)
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document.getElementById(element_id).addEventListener('contextmenu', function (event) {
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event.preventDefault();
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if (!window.confirm('Clear persistent top bar show/hide by default setting?')) {
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return;
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}
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if (is_local_storage_available() == true) {
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localStorage.removeItem('persistent-header-hidden');
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}
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if (is_persistent_header_hidden() == true) {
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toggle_persistent_header(false);
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}
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// alert('Persistent top bar show/hide by default setting reset.');
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return;
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});
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});
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/* Keyboard listeners */
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// Keyboard input listener
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document.addEventListener('keydown', function (event) {
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// Sidebar keyboard shortcut handler (Ctrl+Shift+L)
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if (event.ctrlKey && event.shiftKey && (event.key === 'l' || event.key === 'L')) {
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event.preventDefault();
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toggle_sidebar(true);
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// Persistent header / top bar keyboard shortcut handler (Ctrl+Shift+H)
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} else if (event.ctrlKey && event.shiftKey && (event.key === 'h' || event.key === 'H')) {
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event.preventDefault();
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toggle_persistent_header(true);
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}
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return;
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});
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/* Miscellaneous listeners */
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// Spoiler image listeners
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var spoilers = document.getElementsByClassName('spoiler');
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Array.prototype.forEach.call(spoilers, function (spoiler) {
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spoiler.addEventListener('click', function () {
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if (spoiler.classList.contains('spoiler')) {
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spoiler.classList.remove('spoiler');
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}
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return;
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});
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return;
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});
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return;
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}
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function is_dark_theme() {
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var current_theme = document.documentElement.getAttribute('data-theme');
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return current_theme == 'dark' ? true : false;
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}
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function toggle_theme(remember) {
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var new_theme = is_dark_theme() == false ? 'dark' : 'light';
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document.documentElement.setAttribute('data-theme', new_theme);
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if (remember == true && is_local_storage_available() == true) {
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localStorage.setItem('theme', new_theme);
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}
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return;
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}
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function is_header_persistent() {
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var is_header_persistent = document.documentElement.hasAttribute('data-header-persistent');
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return is_header_persistent;
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}
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function update_header_persistent_status() {
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if (window.scrollY > 20) {
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document.documentElement.setAttribute('data-header-persistent', '');
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} else {
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document.documentElement.removeAttribute('data-header-persistent');
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}
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return;
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}
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function is_mobile() {
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if (window.matchMedia) {
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var media_query = window.matchMedia('(max-width: 900px)');
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if (media_query.matches == true) {
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return true;
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} else {
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return false;
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}
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}
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return;
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}
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function is_mobile_menu_open() {
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return document.documentElement.hasAttribute('data-mobile-menu-open');
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}
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function toggle_mobile_menu() {
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if (is_mobile_menu_open() == false) {
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document.documentElement.setAttribute('data-mobile-menu-open', '');
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} else {
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document.documentElement.removeAttribute('data-mobile-menu-open');
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}
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return;
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}
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function is_persistent_header_hidden() {
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return document.documentElement.hasAttribute('data-persistent-header-hidden');
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}
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function toggle_persistent_header(remember) {
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// Prevent grow/shrink transition for persistent header hide/show
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document.documentElement.setAttribute('data-persistent-header-toggle-no-transition', '');
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// Toggle persistent header
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if (is_persistent_header_hidden() == false) {
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document.documentElement.setAttribute('data-persistent-header-hidden', '');
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if (remember == true && is_local_storage_available() == true) {
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|
localStorage.setItem('persistent-header-hidden', 'true');
|
|
}
|
|
} else {
|
|
document.documentElement.removeAttribute('data-persistent-header-hidden');
|
|
if (remember == true && is_local_storage_available() == true) {
|
|
localStorage.setItem('persistent-header-hidden', 'false');
|
|
}
|
|
}
|
|
|
|
// Reset prevent grow/shrink transition for persistent header hide/show
|
|
setTimeout(function () {
|
|
document.documentElement.removeAttribute('data-persistent-header-toggle-no-transition');
|
|
}, 200);
|
|
|
|
return;
|
|
}
|
|
|
|
function does_sidebar_exist() {
|
|
var does_sidebar_exist = !document.documentElement.hasAttribute('data-no-contents-sidebar');
|
|
return does_sidebar_exist;
|
|
}
|
|
|
|
function is_sidebar_open() {
|
|
var is_sidebar_open = document.documentElement.hasAttribute('data-sidebar-open');
|
|
return is_sidebar_open;
|
|
}
|
|
|
|
function toggle_sidebar(remember) {
|
|
if (is_sidebar_open() == false) {
|
|
document.documentElement.setAttribute('data-sidebar-open', '');
|
|
if (remember == true && is_local_storage_available() == true) {
|
|
localStorage.setItem('show-sidebar', 'true');
|
|
}
|
|
} else {
|
|
document.documentElement.removeAttribute('data-sidebar-open');
|
|
if (remember == true && is_local_storage_available() == true) {
|
|
localStorage.setItem('show-sidebar', 'false');
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
function update_current_sidebar_section() {
|
|
var section_indice = get_current_sidebar_section_indice();
|
|
|
|
var sidebar_contents = document.getElementById('sidebar-contents');
|
|
var section_links = sidebar_contents.querySelectorAll('a[id^="heading-"]');
|
|
for (var i = 0; i < section_links.length; i++) {
|
|
if (section_links[i].id != 'heading-' + section_indice) {
|
|
if (section_links[i].classList.contains('active-section')) {
|
|
section_links[i].classList.remove('active-section');
|
|
}
|
|
} else {
|
|
if (!section_links[i].classList.contains('active-section')) {
|
|
section_links[i].classList.add('active-section');
|
|
if (toc_sidebar_no_scroll_jump == false) {
|
|
section_links[i].scrollIntoView(false);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
function get_current_sidebar_section_indice() {
|
|
var article = document.getElementById('article');
|
|
var sections = article.querySelectorAll('h1, h2, h3, h4, h5, h6');
|
|
|
|
var scroll_position = window.scrollY;
|
|
var page_height = document.documentElement.scrollHeight;
|
|
var window_height = window.innerHeight;
|
|
|
|
for (var i = sections.length - 1; i >= 0; i--) {
|
|
var section_position = sections[i].offsetTop;
|
|
|
|
// Very bottom (remove later (?))
|
|
if (i == sections.length - 1 && page_height - (scroll_position + window_height) <= 30) {
|
|
return i;
|
|
}
|
|
|
|
// Bottom
|
|
/*if (scroll_position >= page_height - window_height * 1.5) {
|
|
// ...
|
|
return sections.length; // Not this! (But just for now...)
|
|
}*/
|
|
|
|
// Very top (remove later (?))
|
|
if (scroll_position <= 30) {
|
|
return 0; // Top of page "section"
|
|
}
|
|
|
|
// Top
|
|
if (scroll_position < window_height * 0.5) {
|
|
if (scroll_position + window_height * 0.5 > section_position) {
|
|
return i;
|
|
}
|
|
}
|
|
|
|
// Top
|
|
/*if (scroll_position < window_height * 0.5) {
|
|
// ...
|
|
if (scroll_position >= section_position) {
|
|
return i - 1; // Not this! (But just for now...)
|
|
}
|
|
}*/
|
|
|
|
// Mid
|
|
if (scroll_position + window_height * 0.5 > section_position) {
|
|
return i;
|
|
}
|
|
}
|
|
|
|
// Scrolled midway (Luna-esque function—works (?) but could be better) (to-do: use/remove)
|
|
// } else if (section_position > scroll_position + window_height * (scroll_position / page_height)) {
|
|
|
|
return;
|
|
}
|
|
|
|
// Is Google Translate mode active?
|
|
function is_google_translate_open() {
|
|
return String(window.location.hostname).includes('translate.goog');
|
|
}
|
|
|
|
// Is Google Translate bar open? (Currently unused)
|
|
function is_google_translate_bar_open() {
|
|
if (is_google_translate_open() == false) {
|
|
return false;
|
|
} else {
|
|
var google_translate_bar_height = get_google_translate_bar_height();
|
|
return google_translate_bar_height == 0 ? false : true;
|
|
}
|
|
}
|
|
|
|
// Get Google Translate bar height
|
|
function get_google_translate_bar_height() {
|
|
return parseFloat(document.body.style.marginTop);
|
|
}
|
|
|
|
// Set Google Translate bar height
|
|
// For CSS styling to update site top positioning to account for Google Translate bar
|
|
function update_google_translate_bar_height() {
|
|
var google_translate_bar_height = get_google_translate_bar_height();
|
|
google_translate_bar_height = String(google_translate_bar_height) + 'px';
|
|
document.documentElement.style.setProperty('--google-translate-bar-height', google_translate_bar_height);
|
|
return;
|
|
}
|
|
|
|
// Wrapper function for window.matchMedia().addEventListener() for cross-browser support
|
|
// https://stackoverflow.com/questions/56466261/matchmedia-addlistener-marked-as-deprecated-addeventlistener-equivalent
|
|
function matchMediaAddEventListener(media_query, listener_function) {
|
|
try {
|
|
// Chrome, Firefox, iOS/Safari 14+, etc.
|
|
window.matchMedia(media_query).addEventListener('change', listener_function);
|
|
} catch {
|
|
try {
|
|
// iOS/Safari 13 and below
|
|
window.matchMedia(media_query).addListener(listener_function);
|
|
} catch {
|
|
console.error('window.matchMedia.addEventListener() and window.matchMedia.addListener() not supported.');
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
// Check if local storage is supported and available (avoid exceptions)
|
|
// https://stackoverflow.com/questions/16427636/check-if-localstorage-is-available
|
|
// https://developer.mozilla.org/en-US/docs/Web/API/Web_Storage_API/Using_the_Web_Storage_API
|
|
function is_local_storage_available() {
|
|
let storage;
|
|
try {
|
|
storage = window['localStorage'];
|
|
const x = '__storage_test__';
|
|
storage.setItem(x, x);
|
|
storage.removeItem(x);
|
|
return true;
|
|
}
|
|
catch (error) {
|
|
return error instanceof DOMException && (
|
|
// Everything except Firefox
|
|
error.code === 22 ||
|
|
// Firefox
|
|
error.code === 1014 ||
|
|
// Test name field too, because code might not be present
|
|
// Everything except Firefox
|
|
error.name === 'QuotaExceededError' ||
|
|
// Firefox
|
|
error.name === 'NS_ERROR_DOM_QUOTA_REACHED') &&
|
|
// Acknowledge QuotaExceededError only if there's something already stored
|
|
(storage && storage.length !== 0);
|
|
}
|
|
}
|
|
|