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authorBen Gamari <ben@smart-cactus.org>2021-01-05 16:23:02 -0500
committerBen Gamari <ben@smart-cactus.org>2021-01-05 16:23:02 -0500
commit99f61534a470b84c424fde0835215de6a3b6d721 (patch)
tree7152e5a53fe1c18e6fd5044d5aa3168ab99c3cc6 /haddock-api/resources/html/js-src/details-helper.ts
parent3e29ec51498dfe092b228889343dc8370ec0e64b (diff)
parent1e56f63c3197e7ca1c1e506e083c2bad25d08793 (diff)
Merge commit '1e56f63c3197e7ca1c1e506e083c2bad25d08793' into ghc-9.0
Diffstat (limited to 'haddock-api/resources/html/js-src/details-helper.ts')
-rw-r--r--haddock-api/resources/html/js-src/details-helper.ts106
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();
-} \ No newline at end of file