diff options
Diffstat (limited to 'haddock-api/resources/html/js-src/details-helper.ts')
-rw-r--r-- | haddock-api/resources/html/js-src/details-helper.ts | 106 |
1 files changed, 0 insertions, 106 deletions
diff --git a/haddock-api/resources/html/js-src/details-helper.ts b/haddock-api/resources/html/js-src/details-helper.ts deleted file mode 100644 index f13ac905..00000000 --- a/haddock-api/resources/html/js-src/details-helper.ts +++ /dev/null @@ -1,106 +0,0 @@ -import {getCookie} from "./cookies"; - -interface HTMLDetailsElement extends HTMLElement { - open: boolean -} - -interface DetailsInfo { - element: HTMLDetailsElement - openByDefault: boolean - toggles: HTMLElement[] -} - -// Global state -const detailsRegistry: { [id: string]: DetailsInfo } = {}; -const toggled: { [id: string]: true } = {}; /* stores which <details> are not in their default state */ - -function lookupDetailsRegistry(id: string): DetailsInfo { - const info = detailsRegistry[id]; - if (info == undefined) { throw new Error(`could not find <details> element with id '${id}'`); } - return info; -} - -function onDetailsToggle(ev: Event) { - const element = ev.target as HTMLDetailsElement; - const id = element.id; - const info = lookupDetailsRegistry(id); - const isOpen = info.element.open; - for (const toggle of info.toggles) { - if (toggle.classList.contains('details-toggle-control')) { - toggle.classList.add(isOpen ? 'collapser' : 'expander'); - toggle.classList.remove(isOpen ? 'expander' : 'collapser'); - } - } - if (element.open == info.openByDefault) { - delete toggled[id]; - } else { - toggled[id] = true; - } - rememberToggled(); -} - -function gatherDetailsElements() { - const els: HTMLDetailsElement[] = Array.prototype.slice.call(document.getElementsByTagName('details')); - for (const el of els) { - if (typeof el.id == "string" && el.id.length > 0) { - detailsRegistry[el.id] = { - element: el, - openByDefault: !!el.open, - toggles: [] // added later - }; - el.addEventListener('toggle', onDetailsToggle); - } - } -} - -function toggleDetails(id: string) { - const {element} = lookupDetailsRegistry(id); - element.open = !element.open; -} - -function rememberToggled() { - const sections: string[] = Object.keys(toggled); - // cookie specific to this page; don't use setCookie which sets path=/ - document.cookie = "toggled=" + encodeURIComponent(sections.join('+')); -} - -function restoreToggled() { - const cookie = getCookie("toggled"); - if (!cookie) { return; } - const ids = cookie.split('+'); - for (const id of ids) { - const info = detailsRegistry[id]; - toggled[id] = true; - if (info) { - info.element.open = !info.element.open; - } - } -} - -function onToggleClick(ev: MouseEvent) { - ev.preventDefault(); - const toggle = ev.currentTarget as HTMLElement; - const id = toggle.getAttribute('data-details-id'); - if (!id) { throw new Error("element with class 'details-toggle' has no 'data-details-id' attribute!"); } - toggleDetails(id); -} - -function initCollapseToggles() { - const toggles: HTMLElement[] = Array.prototype.slice.call(document.getElementsByClassName('details-toggle')); - toggles.forEach(toggle => { - const id = toggle.getAttribute('data-details-id'); - if (!id) { throw new Error("element with class 'details-toggle' has no 'data-details-id' attribute!"); } - const info = lookupDetailsRegistry(id); - info.toggles.push(toggle); - toggle.addEventListener('click', onToggleClick); - if (toggle.classList.contains('details-toggle-control')) { - toggle.classList.add(info.element.open ? 'collapser' : 'expander'); - } - }); -} - -export function init() { - gatherDetailsElements(); - restoreToggled(); - initCollapseToggles(); -}
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