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/* * doctools.js * ~~~~~~~~~~~ * * Base JavaScript utilities for all Sphinx HTML documentation. * * :copyright: Copyright 2007-2022 by the Sphinx team, see AUTHORS. * :license: BSD, see LICENSE for details. * */ "use strict"; const BLACKLISTED_KEY_CONTROL_ELEMENTS = new Set([ "TEXTAREA", "INPUT", "SELECT", "BUTTON", ]); const _ready = (callback) => { if (document.readyState !== "loading") { callback(); } else { document.addEventListener("DOMContentLoaded", callback); } }; /** * Small JavaScript module for the documentation. */ const Documentation = { init: () => { Documentation.initDomainIndexTable(); Documentation.initOnKeyListeners(); }, /** * i18n support */ TRANSLATIONS: {}, PLURAL_EXPR: (n) => (n === 1 ? 0 : 1), LOCALE: "unknown", // gettext and ngettext don't access this so that the functions // can safely bound to a different name (_ = Documentation.gettext) gettext: (string) => { const translated = Documentation.TRANSLATIONS[string]; switch (typeof translated) { case "undefined": return string; // no translation case "string": return translated; // translation exists default: return translated[0]; // (singular, plural) translation tuple exists } }, ngettext: (singular, plural, n) => { const translated = Documentation.TRANSLATIONS[singular]; if (typeof translated !== "undefined") return translated[Documentation.PLURAL_EXPR(n)]; return n === 1 ? singular : plural; }, addTranslations: (catalog) => { Object.assign(Documentation.TRANSLATIONS, catalog.messages); Documentation.PLURAL_EXPR = new Function( "n", `return (${catalog.plural_expr})` ); Documentation.LOCALE = catalog.locale; }, /** * helper function to focus on search bar */ focusSearchBar: () => { document.querySelectorAll("input[name=q]")[0]?.focus(); }, /** * Initialise the domain index toggle buttons */ initDomainIndexTable: () => { const toggler = (el) => { const idNumber = el.id.substr(7); const toggledRows = document.querySelectorAll(`tr.cg-${idNumber}`); if (el.src.substr(-9) === "minus.png") { el.src = `${el.src.substr(0, el.src.length - 9)}plus.png`; toggledRows.forEach((el) => (el.style.display = "none")); } else { el.src = `${el.src.substr(0, el.src.length - 8)}minus.png`; toggledRows.forEach((el) => (el.style.display = "")); } }; const togglerElements = document.querySelectorAll("img.toggler"); togglerElements.forEach((el) => el.addEventListener("click", (event) => toggler(event.currentTarget)) ); togglerElements.forEach((el) => (el.style.display = "")); if (DOCUMENTATION_OPTIONS.COLLAPSE_INDEX) togglerElements.forEach(toggler); }, initOnKeyListeners: () => { // only install a listener if it is really needed if ( !DOCUMENTATION_OPTIONS.NAVIGATION_WITH_KEYS && !DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS ) return; document.addEventListener("keydown", (event) => { // bail for input elements if (BLACKLISTED_KEY_CONTROL_ELEMENTS.has(document.activeElement.tagName)) return; // bail with special keys if (event.altKey || event.ctrlKey || event.metaKey) return; if (!event.shiftKey) { switch (event.key) { case "ArrowLeft": if (!DOCUMENTATION_OPTIONS.NAVIGATION_WITH_KEYS) break; const prevLink = document.querySelector('link[rel="prev"]'); if (prevLink && prevLink.href) { window.location.href = prevLink.href; event.preventDefault(); } break; case "ArrowRight": if (!DOCUMENTATION_OPTIONS.NAVIGATION_WITH_KEYS) break; const nextLink = document.querySelector('link[rel="next"]'); if (nextLink && nextLink.href) { window.location.href = nextLink.href; event.preventDefault(); } break; } } // some keyboard layouts may need Shift to get / switch (event.key) { case "/": if (!DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS) break; Documentation.focusSearchBar(); event.preventDefault(); } }); }, }; // quick alias for translations const _ = Documentation.gettext; _ready(Documentation.init);