glance/internal/assets/static/main.js
2024-08-05 14:08:16 +01:00

618 lines
19 KiB
JavaScript

function throttledDebounce(callback, maxDebounceTimes, debounceDelay) {
let debounceTimeout;
let timesDebounced = 0;
return function () {
if (timesDebounced == maxDebounceTimes) {
clearTimeout(debounceTimeout);
timesDebounced = 0;
callback();
return;
}
clearTimeout(debounceTimeout);
timesDebounced++;
debounceTimeout = setTimeout(() => {
timesDebounced = 0;
callback();
}, debounceDelay);
};
};
async function fetchPageContent(pageData) {
// TODO: handle non 200 status codes/time outs
// TODO: add retries
const response = await fetch(`${pageData.baseURL}/api/pages/${pageData.slug}/content/`);
const content = await response.text();
return content;
}
function setupCarousels() {
const carouselElements = document.getElementsByClassName("carousel-container");
if (carouselElements.length == 0) {
return;
}
for (let i = 0; i < carouselElements.length; i++) {
const carousel = carouselElements[i];
carousel.classList.add("show-right-cutoff");
const itemsContainer = carousel.getElementsByClassName("carousel-items-container")[0];
const determineSideCutoffs = () => {
if (itemsContainer.scrollLeft != 0) {
carousel.classList.add("show-left-cutoff");
} else {
carousel.classList.remove("show-left-cutoff");
}
if (Math.ceil(itemsContainer.scrollLeft) + itemsContainer.clientWidth < itemsContainer.scrollWidth) {
carousel.classList.add("show-right-cutoff");
} else {
carousel.classList.remove("show-right-cutoff");
}
}
const determineSideCutoffsRateLimited = throttledDebounce(determineSideCutoffs, 20, 100);
itemsContainer.addEventListener("scroll", determineSideCutoffsRateLimited);
window.addEventListener("resize", determineSideCutoffsRateLimited);
afterContentReady(determineSideCutoffs);
}
}
const minuteInSeconds = 60;
const hourInSeconds = minuteInSeconds * 60;
const dayInSeconds = hourInSeconds * 24;
const monthInSeconds = dayInSeconds * 30;
const yearInSeconds = monthInSeconds * 12;
function relativeTimeSince(timestamp) {
const delta = Math.round((Date.now() / 1000) - timestamp);
if (delta < minuteInSeconds) {
return "1m";
}
if (delta < hourInSeconds) {
return Math.floor(delta / minuteInSeconds) + "m";
}
if (delta < dayInSeconds) {
return Math.floor(delta / hourInSeconds) + "h";
}
if (delta < monthInSeconds) {
return Math.floor(delta / dayInSeconds) + "d";
}
if (delta < yearInSeconds) {
return Math.floor(delta / monthInSeconds) + "mo";
}
return Math.floor(delta / yearInSeconds) + "y";
}
function updateRelativeTimeForElements(elements)
{
for (let i = 0; i < elements.length; i++)
{
const element = elements[i];
const timestamp = element.dataset.dynamicRelativeTime;
if (timestamp === undefined)
continue
element.textContent = relativeTimeSince(timestamp);
}
}
function setupSearchBoxes() {
const searchWidgets = document.getElementsByClassName("search");
if (searchWidgets.length == 0) {
return;
}
for (let i = 0; i < searchWidgets.length; i++) {
const widget = searchWidgets[i];
const defaultSearchUrl = widget.dataset.defaultSearchUrl;
const newTab = widget.dataset.newTab === "true";
const inputElement = widget.getElementsByClassName("search-input")[0];
const bangElement = widget.getElementsByClassName("search-bang")[0];
const bangs = widget.querySelectorAll(".search-bangs > input");
const bangsMap = {};
const kbdElement = widget.getElementsByTagName("kbd")[0];
let currentBang = null;
for (let j = 0; j < bangs.length; j++) {
const bang = bangs[j];
bangsMap[bang.dataset.shortcut] = bang;
}
const handleKeyDown = (event) => {
if (event.key == "Escape") {
inputElement.blur();
return;
}
if (event.key == "Enter") {
const input = inputElement.value.trim();
let query;
let searchUrlTemplate;
if (currentBang != null) {
query = input.slice(currentBang.dataset.shortcut.length + 1);
searchUrlTemplate = currentBang.dataset.url;
} else {
query = input;
searchUrlTemplate = defaultSearchUrl;
}
if (query.length == 0 && currentBang == null) {
return;
}
const url = searchUrlTemplate.replace("!QUERY!", encodeURIComponent(query));
if (newTab && !event.ctrlKey || !newTab && event.ctrlKey) {
window.open(url, '_blank').focus();
} else {
window.location.href = url;
}
return;
}
};
const changeCurrentBang = (bang) => {
currentBang = bang;
bangElement.textContent = bang != null ? bang.dataset.title : "";
}
const handleInput = (event) => {
const value = event.target.value.trim();
if (value in bangsMap) {
changeCurrentBang(bangsMap[value]);
return;
}
const words = value.split(" ");
if (words.length >= 2 && words[0] in bangsMap) {
changeCurrentBang(bangsMap[words[0]]);
return;
}
changeCurrentBang(null);
};
inputElement.addEventListener("focus", () => {
document.addEventListener("keydown", handleKeyDown);
document.addEventListener("input", handleInput);
});
inputElement.addEventListener("blur", () => {
document.removeEventListener("keydown", handleKeyDown);
document.removeEventListener("input", handleInput);
});
document.addEventListener("keydown", (event) => {
if (['INPUT', 'TEXTAREA'].includes(document.activeElement.tagName)) return;
if (event.key != "s") return;
inputElement.focus();
event.preventDefault();
});
kbdElement.addEventListener("mousedown", () => {
requestAnimationFrame(() => inputElement.focus());
});
}
}
function setupDynamicRelativeTime() {
const elements = document.querySelectorAll("[data-dynamic-relative-time]");
const updateInterval = 60 * 1000;
let lastUpdateTime = Date.now();
updateRelativeTimeForElements(elements);
const updateElementsAndTimestamp = () => {
updateRelativeTimeForElements(elements);
lastUpdateTime = Date.now();
};
const scheduleRepeatingUpdate = () => setInterval(updateElementsAndTimestamp, updateInterval);
if (document.hidden === undefined) {
scheduleRepeatingUpdate();
return;
}
let timeout = scheduleRepeatingUpdate();
document.addEventListener("visibilitychange", () => {
if (document.hidden) {
clearTimeout(timeout);
return;
}
const delta = Date.now() - lastUpdateTime;
if (delta >= updateInterval) {
updateElementsAndTimestamp();
timeout = scheduleRepeatingUpdate();
return;
}
timeout = setTimeout(() => {
updateElementsAndTimestamp();
timeout = scheduleRepeatingUpdate();
}, updateInterval - delta);
});
}
function setupGroups() {
const groups = document.getElementsByClassName("widget-type-group");
if (groups.length == 0) {
return;
}
for (let g = 0; g < groups.length; g++) {
const group = groups[g];
const titles = group.getElementsByClassName("widget-header")[0].children;
const tabs = group.getElementsByClassName("widget-group-contents")[0].children;
let current = 0;
for (let t = 0; t < titles.length; t++) {
const title = titles[t];
title.addEventListener("click", () => {
if (t == current) {
return;
}
for (let i = 0; i < titles.length; i++) {
titles[i].classList.remove("widget-group-title-current");
tabs[i].classList.remove("widget-group-content-current");
}
if (current < t) {
tabs[t].dataset.direction = "right";
} else {
tabs[t].dataset.direction = "left";
}
current = t;
title.classList.add("widget-group-title-current");
tabs[t].classList.add("widget-group-content-current");
});
}
}
}
function setupLazyImages() {
const images = document.querySelectorAll("img[loading=lazy]");
if (images.length == 0) {
return;
}
function imageFinishedTransition(image) {
image.classList.add("finished-transition");
}
afterContentReady(() => {
setTimeout(() => {
for (let i = 0; i < images.length; i++) {
const image = images[i];
if (image.complete) {
image.classList.add("cached");
setTimeout(() => imageFinishedTransition(image), 1);
} else {
// TODO: also handle error event
image.addEventListener("load", () => {
image.classList.add("loaded");
setTimeout(() => imageFinishedTransition(image), 400);
});
}
}
}, 1);
});
}
function attachExpandToggleButton(collapsibleContainer) {
const showMoreText = "Show more";
const showLessText = "Show less";
let expanded = false;
const button = document.createElement("button");
const icon = document.createElement("span");
icon.classList.add("expand-toggle-button-icon");
const textNode = document.createTextNode(showMoreText);
button.classList.add("expand-toggle-button");
button.append(textNode, icon);
button.addEventListener("click", () => {
expanded = !expanded;
if (expanded) {
collapsibleContainer.classList.add("container-expanded");
button.classList.add("container-expanded");
textNode.nodeValue = showLessText;
return;
}
const topBefore = button.getClientRects()[0].top;
collapsibleContainer.classList.remove("container-expanded");
button.classList.remove("container-expanded");
textNode.nodeValue = showMoreText;
const topAfter = button.getClientRects()[0].top;
if (topAfter > 0)
return;
window.scrollBy({
top: topAfter - topBefore,
behavior: "instant"
});
});
collapsibleContainer.after(button);
return button;
};
function setupCollapsibleLists() {
const collapsibleLists = document.querySelectorAll(".list.collapsible-container");
if (collapsibleLists.length == 0) {
return;
}
for (let i = 0; i < collapsibleLists.length; i++) {
const list = collapsibleLists[i];
if (list.dataset.collapseAfter === undefined) {
continue;
}
const collapseAfter = parseInt(list.dataset.collapseAfter);
if (collapseAfter == -1) {
continue;
}
if (list.children.length <= collapseAfter) {
continue;
}
attachExpandToggleButton(list);
for (let c = collapseAfter; c < list.children.length; c++) {
const child = list.children[c];
child.classList.add("collapsible-item");
child.style.animationDelay = ((c - collapseAfter) * 20).toString() + "ms";
}
}
}
function setupCollapsibleGrids() {
const collapsibleGridElements = document.querySelectorAll(".cards-grid.collapsible-container");
if (collapsibleGridElements.length == 0) {
return;
}
for (let i = 0; i < collapsibleGridElements.length; i++) {
const gridElement = collapsibleGridElements[i];
if (gridElement.dataset.collapseAfterRows === undefined) {
continue;
}
const collapseAfterRows = parseInt(gridElement.dataset.collapseAfterRows);
if (collapseAfterRows == -1) {
continue;
}
const getCardsPerRow = () => {
return parseInt(getComputedStyle(gridElement).getPropertyValue('--cards-per-row'));
};
const button = attachExpandToggleButton(gridElement);
let cardsPerRow = 2;
const resolveCollapsibleItems = () => {
const hideItemsAfterIndex = cardsPerRow * collapseAfterRows;
if (hideItemsAfterIndex >= gridElement.children.length) {
button.style.display = "none";
} else {
button.style.removeProperty("display");
}
let row = 0;
for (let i = 0; i < gridElement.children.length; i++) {
const child = gridElement.children[i];
if (i >= hideItemsAfterIndex) {
child.classList.add("collapsible-item");
child.style.animationDelay = (row * 40).toString() + "ms";
if (i % cardsPerRow + 1 == cardsPerRow) {
row++;
}
} else {
child.classList.remove("collapsible-item");
child.style.removeProperty("animation-delay");
}
}
};
afterContentReady(() => {
cardsPerRow = getCardsPerRow();
resolveCollapsibleItems();
});
window.addEventListener("resize", () => {
const newCardsPerRow = getCardsPerRow();
if (cardsPerRow == newCardsPerRow) {
return;
}
cardsPerRow = newCardsPerRow;
resolveCollapsibleItems();
});
}
}
const contentReadyCallbacks = [];
function afterContentReady(callback) {
contentReadyCallbacks.push(callback);
}
const weekDayNames = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'];
const monthNames = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'];
function makeSettableTimeElement(element, hourFormat) {
const fragment = document.createDocumentFragment();
const hour = document.createElement('span');
const minute = document.createElement('span');
const amPm = document.createElement('span');
fragment.append(hour, document.createTextNode(':'), minute);
if (hourFormat == '12h') {
fragment.append(document.createTextNode(' '), amPm);
}
element.append(fragment);
return (date) => {
const hours = date.getHours();
if (hourFormat == '12h') {
amPm.textContent = hours < 12 ? 'AM' : 'PM';
hour.textContent = hours % 12 || 12;
} else {
hour.textContent = hours < 10 ? '0' + hours : hours;
}
const minutes = date.getMinutes();
minute.textContent = minutes < 10 ? '0' + minutes : minutes;
};
};
function timeInZone(now, zone) {
let timeInZone;
try {
timeInZone = new Date(now.toLocaleString('en-US', { timeZone: zone }));
} catch (e) {
// TODO: indicate to the user that this is an invalid timezone
console.error(e);
timeInZone = now
}
const diffInHours = Math.round((timeInZone.getTime() - now.getTime()) / 1000 / 60 / 60);
return { time: timeInZone, diffInHours: diffInHours };
}
function setupClocks() {
const clocks = document.getElementsByClassName('clock');
if (clocks.length == 0) {
return;
}
const updateCallbacks = [];
for (var i = 0; i < clocks.length; i++) {
const clock = clocks[i];
const hourFormat = clock.dataset.hourFormat;
const localTimeContainer = clock.querySelector('[data-local-time]');
const localDateElement = localTimeContainer.querySelector('[data-date]');
const localWeekdayElement = localTimeContainer.querySelector('[data-weekday]');
const localYearElement = localTimeContainer.querySelector('[data-year]');
const timeZoneContainers = clock.querySelectorAll('[data-time-in-zone]');
const setLocalTime = makeSettableTimeElement(
localTimeContainer.querySelector('[data-time]'),
hourFormat
);
updateCallbacks.push((now) => {
setLocalTime(now);
localDateElement.textContent = now.getDate() + ' ' + monthNames[now.getMonth()];
localWeekdayElement.textContent = weekDayNames[now.getDay()];
localYearElement.textContent = now.getFullYear();
});
for (var z = 0; z < timeZoneContainers.length; z++) {
const timeZoneContainer = timeZoneContainers[z];
const diffElement = timeZoneContainer.querySelector('[data-time-diff]');
const setZoneTime = makeSettableTimeElement(
timeZoneContainer.querySelector('[data-time]'),
hourFormat
);
updateCallbacks.push((now) => {
const { time, diffInHours } = timeInZone(now, timeZoneContainer.dataset.timeInZone);
setZoneTime(time);
diffElement.textContent = (diffInHours <= 0 ? diffInHours : '+' + diffInHours) + 'h';
});
}
}
const updateClocks = () => {
const now = new Date();
for (var i = 0; i < updateCallbacks.length; i++)
updateCallbacks[i](now);
setTimeout(updateClocks, (60 - now.getSeconds()) * 1000);
};
updateClocks();
}
async function setupPage() {
const pageElement = document.getElementById("page");
const pageContentElement = document.getElementById("page-content");
const pageContent = await fetchPageContent(pageData);
pageContentElement.innerHTML = pageContent;
try {
setupClocks()
setupCarousels();
setupSearchBoxes();
setupCollapsibleLists();
setupCollapsibleGrids();
setupGroups();
setupDynamicRelativeTime();
setupLazyImages();
} finally {
pageElement.classList.add("content-ready");
for (let i = 0; i < contentReadyCallbacks.length; i++) {
contentReadyCallbacks[i]();
}
setTimeout(() => {
document.body.classList.add("page-columns-transitioned");
}, 300);
}
}
setupPage();