forked from mirrors/bookwyrm
648 lines
20 KiB
JavaScript
648 lines
20 KiB
JavaScript
/* exported BookWyrm */
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/* globals TabGroup */
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let BookWyrm = new (class {
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constructor() {
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this.MAX_FILE_SIZE_BYTES = 10 * 1000000;
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this.initOnDOMLoaded();
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this.initReccuringTasks();
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this.initEventListeners();
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}
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initEventListeners() {
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document
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.querySelectorAll("[data-controls]")
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.forEach((button) => button.addEventListener("click", this.toggleAction.bind(this)));
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document
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.querySelectorAll(".interaction")
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.forEach((button) => button.addEventListener("submit", this.interact.bind(this)));
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document
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.querySelectorAll(".hidden-form input")
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.forEach((button) => button.addEventListener("change", this.revealForm.bind(this)));
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document
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.querySelectorAll("[data-hides]")
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.forEach((button) => button.addEventListener("change", this.hideForm.bind(this)));
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document
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.querySelectorAll("[data-back]")
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.forEach((button) => button.addEventListener("click", this.back));
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document
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.querySelectorAll('input[type="file"]')
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.forEach((node) => node.addEventListener("change", this.disableIfTooLarge.bind(this)));
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document
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.querySelectorAll("button[data-modal-open]")
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.forEach((node) => node.addEventListener("click", this.handleModalButton.bind(this)));
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document
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.querySelectorAll("[data-duplicate]")
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.forEach((node) => node.addEventListener("click", this.duplicateInput.bind(this)));
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document
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.querySelectorAll("details.dropdown")
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.forEach((node) =>
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node.addEventListener("toggle", this.handleDetailsDropdown.bind(this))
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);
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}
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/**
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* Execute code once the DOM is loaded.
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*/
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initOnDOMLoaded() {
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const bookwyrm = this;
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window.addEventListener("DOMContentLoaded", function () {
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document.querySelectorAll(".tab-group").forEach((tabs) => new TabGroup(tabs));
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document
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.querySelectorAll('input[type="file"]')
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.forEach(bookwyrm.disableIfTooLarge.bind(bookwyrm));
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document.querySelectorAll("[data-copytext]").forEach(bookwyrm.copyText.bind(bookwyrm));
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});
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}
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/**
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* Execute recurring tasks.
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*/
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initReccuringTasks() {
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// Polling
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document.querySelectorAll("[data-poll]").forEach((liveArea) => this.polling(liveArea));
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}
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/**
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* Go back in browser history.
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*
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* @param {Event} event
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* @return {undefined}
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*/
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back(event) {
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event.preventDefault();
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history.back();
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}
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/**
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* Update a counter with recurring requests to the API
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* The delay is slightly randomized and increased on each cycle.
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*
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* @param {Object} counter - DOM node
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* @param {int} delay - frequency for polling in ms
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* @return {undefined}
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*/
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polling(counter, delay) {
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const bookwyrm = this;
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delay = delay || 10000;
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delay += Math.random() * 1000;
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setTimeout(
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function () {
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fetch("/api/updates/" + counter.dataset.poll)
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.then((response) => response.json())
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.then((data) => bookwyrm.updateCountElement(counter, data));
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bookwyrm.polling(counter, delay * 1.25);
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},
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delay,
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counter
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);
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}
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/**
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* Update a counter.
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*
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* @param {object} counter - DOM node
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* @param {object} data - json formatted response from a fetch
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* @return {undefined}
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*/
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updateCountElement(counter, data) {
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let count = data.count;
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const count_by_type = data.count_by_type;
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const currentCount = counter.innerText;
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const hasMentions = data.has_mentions;
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const allowedStatusTypesEl = document.getElementById("unread-notifications-wrapper");
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// If we're on the right counter element
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if (counter.closest("[data-poll-wrapper]").contains(allowedStatusTypesEl)) {
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const allowedStatusTypes = JSON.parse(allowedStatusTypesEl.textContent);
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// For keys in common between allowedStatusTypes and count_by_type
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// This concerns 'review', 'quotation', 'comment'
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count = allowedStatusTypes.reduce(function (prev, currentKey) {
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const currentValue = count_by_type[currentKey] | 0;
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return prev + currentValue;
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}, 0);
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// Add all the "other" in count_by_type if 'everything' is allowed
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if (allowedStatusTypes.includes("everything")) {
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// Clone count_by_type with 0 for reviews/quotations/comments
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const count_by_everything_else = Object.assign({}, count_by_type, {
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review: 0,
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quotation: 0,
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comment: 0,
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});
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count = Object.keys(count_by_everything_else).reduce(function (prev, currentKey) {
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const currentValue = count_by_everything_else[currentKey] | 0;
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return prev + currentValue;
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}, count);
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}
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}
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if (count != currentCount) {
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this.addRemoveClass(counter.closest("[data-poll-wrapper]"), "is-hidden", count < 1);
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counter.innerText = count;
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this.addRemoveClass(counter.closest("[data-poll-wrapper]"), "is-danger", hasMentions);
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}
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}
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/**
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* Show form.
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*
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* @param {Event} event
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* @return {undefined}
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*/
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revealForm(event) {
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let trigger = event.currentTarget;
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let hidden = trigger.closest(".hidden-form").querySelectorAll(".is-hidden")[0];
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if (hidden) {
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this.addRemoveClass(hidden, "is-hidden", !hidden);
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}
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}
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/**
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* Hide form.
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*
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* @param {Event} event
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* @return {undefined}
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*/
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hideForm(event) {
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let trigger = event.currentTarget;
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let targetId = trigger.dataset.hides;
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let visible = document.getElementById(targetId);
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this.addRemoveClass(visible, "is-hidden", true);
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}
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/**
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* Execute actions on targets based on triggers.
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*
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* @param {Event} event
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* @return {undefined}
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*/
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toggleAction(event) {
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let trigger = event.currentTarget;
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if (!trigger.dataset.allowDefault || event.currentTarget == event.target) {
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event.preventDefault();
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}
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let pressed = trigger.getAttribute("aria-pressed") === "false";
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let targetId = trigger.dataset.controls;
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// Toggle pressed status on all triggers controlling the same target.
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document
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.querySelectorAll('[data-controls="' + targetId + '"]')
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.forEach((otherTrigger) =>
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otherTrigger.setAttribute(
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"aria-pressed",
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otherTrigger.getAttribute("aria-pressed") === "false"
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)
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);
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// @todo Find a better way to handle the exception.
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if (targetId && !trigger.classList.contains("pulldown-menu")) {
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let target = document.getElementById(targetId);
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this.addRemoveClass(target, "is-hidden", !pressed);
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this.addRemoveClass(target, "is-active", pressed);
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}
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// Show/hide pulldown-menus.
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if (trigger.classList.contains("pulldown-menu")) {
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this.toggleMenu(trigger, targetId);
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}
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// Show/hide container.
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let container = document.getElementById("hide_" + targetId);
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if (container) {
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this.toggleContainer(container, pressed);
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}
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// Check checkbox, if appropriate.
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let checkbox = trigger.dataset.controlsCheckbox;
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if (checkbox) {
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this.toggleCheckbox(checkbox, pressed);
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}
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// Toggle form disabled, if appropriate
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let disable = trigger.dataset.disables;
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if (disable) {
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this.toggleDisabled(disable, !pressed);
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}
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// Set focus, if appropriate.
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let focus = trigger.dataset.focusTarget;
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if (focus) {
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this.toggleFocus(focus);
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}
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return false;
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}
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/**
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* Show or hide menus.
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*
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* @param {Event} event
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* @return {undefined}
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*/
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toggleMenu(trigger, targetId) {
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let expanded = trigger.getAttribute("aria-expanded") == "false";
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trigger.setAttribute("aria-expanded", expanded);
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if (targetId) {
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let target = document.getElementById(targetId);
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this.addRemoveClass(target, "is-active", expanded);
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}
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}
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/**
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* Show or hide generic containers.
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*
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* @param {object} container - DOM node
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* @param {boolean} pressed - Is the trigger pressed?
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* @return {undefined}
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*/
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toggleContainer(container, pressed) {
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this.addRemoveClass(container, "is-hidden", pressed);
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}
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/**
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* Check or uncheck a checkbox.
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*
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* @param {string} checkbox - id of the checkbox
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* @param {boolean} pressed - Is the trigger pressed?
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* @return {undefined}
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*/
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toggleCheckbox(checkbox, pressed) {
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document.getElementById(checkbox).checked = !!pressed;
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}
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/**
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* Enable or disable a form element or fieldset
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*
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* @param {string} form_element - id of the element
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* @param {boolean} pressed - Is the trigger pressed?
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* @return {undefined}
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*/
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toggleDisabled(form_element, pressed) {
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document.getElementById(form_element).disabled = !!pressed;
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}
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/**
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* Give the focus to an element.
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* Only move the focus based on user interactions.
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*
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* @param {string} nodeId - ID of the DOM node to focus (button, link…)
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* @return {undefined}
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*/
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toggleFocus(nodeId) {
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let node = document.getElementById(nodeId);
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node.focus();
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setTimeout(function () {
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node.selectionStart = node.selectionEnd = 10000;
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}, 0);
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}
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/**
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* Make a request and update the UI accordingly.
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* This function is used for boosts, favourites, follows and unfollows.
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*
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* @param {Event} event
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* @return {undefined}
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*/
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interact(event) {
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event.preventDefault();
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const bookwyrm = this;
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const form = event.currentTarget;
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const relatedforms = document.querySelectorAll(`.${form.dataset.id}`);
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// Toggle class on all related forms.
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relatedforms.forEach((relatedForm) =>
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bookwyrm.addRemoveClass(
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relatedForm,
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"is-hidden",
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relatedForm.className.indexOf("is-hidden") == -1
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)
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);
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this.ajaxPost(form).catch((error) => {
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// @todo Display a notification in the UI instead.
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console.warn("Request failed:", error);
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});
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}
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/**
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* Submit a form using POST.
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*
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* @param {object} form - Form to be submitted
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* @return {Promise}
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*/
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ajaxPost(form) {
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return fetch(form.action, {
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method: "POST",
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body: new FormData(form),
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headers: {
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Accept: "application/json",
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},
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});
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}
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/**
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* Add or remove a class based on a boolean condition.
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*
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* @param {object} node - DOM node to change class on
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* @param {string} classname - Name of the class
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* @param {boolean} add - Add?
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* @return {undefined}
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*/
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addRemoveClass(node, classname, add) {
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if (add) {
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node.classList.add(classname);
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} else {
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node.classList.remove(classname);
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}
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}
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disableIfTooLarge(eventOrElement) {
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const { addRemoveClass, MAX_FILE_SIZE_BYTES } = this;
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const element = eventOrElement.currentTarget || eventOrElement;
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const submits = element.form.querySelectorAll('[type="submit"]');
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const warns = element.parentElement.querySelectorAll(".file-too-big");
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const isTooBig =
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element.files && element.files[0] && element.files[0].size > MAX_FILE_SIZE_BYTES;
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if (isTooBig) {
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submits.forEach((submitter) => (submitter.disabled = true));
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warns.forEach((sib) => addRemoveClass(sib, "is-hidden", false));
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} else {
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submits.forEach((submitter) => (submitter.disabled = false));
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warns.forEach((sib) => addRemoveClass(sib, "is-hidden", true));
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}
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}
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/**
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* Handle the modal component.
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*
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* @param {Event} event - Event fired by an element
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* with the `data-modal-open` attribute
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* pointing to a modal by its id.
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* @return {undefined}
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*
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* See https://github.com/bookwyrm-social/bookwyrm/pull/1633
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* for information about using the modal.
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*/
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handleModalButton(event) {
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const modalButton = event.currentTarget;
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const targetModalId = modalButton.dataset.modalOpen;
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const htmlElement = document.querySelector("html");
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const modal = document.getElementById(targetModalId);
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if (!modal) {
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return;
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}
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// Helper functions
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function handleModalOpen(modalElement) {
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htmlElement.classList.add("is-clipped");
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modalElement.classList.add("is-active");
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modalElement.getElementsByClassName("modal-card")[0].focus();
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const closeButtons = modalElement.querySelectorAll("[data-modal-close]");
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closeButtons.forEach((button) => {
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button.addEventListener("click", function () {
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handleModalClose(modalElement);
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});
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});
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document.addEventListener("keydown", function (event) {
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if (event.key === "Escape") {
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handleModalClose(modalElement);
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}
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});
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modalElement.addEventListener("keydown", handleFocusTrap);
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}
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function handleModalClose(modalElement) {
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modalElement.removeEventListener("keydown", handleFocusTrap);
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htmlElement.classList.remove("is-clipped");
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modalElement.classList.remove("is-active");
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modalButton.focus();
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}
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function handleFocusTrap(event) {
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if (event.key !== "Tab") {
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return;
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}
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const focusableEls = event.currentTarget.querySelectorAll(
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[
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"a[href]:not([disabled])",
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"button:not([disabled])",
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"textarea:not([disabled])",
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'input:not([type="hidden"]):not([disabled])',
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"select:not([disabled])",
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"details:not([disabled])",
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'[tabindex]:not([tabindex="-1"]):not([disabled])',
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].join(",")
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);
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const firstFocusableEl = focusableEls[0];
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const lastFocusableEl = focusableEls[focusableEls.length - 1];
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if (event.shiftKey) {
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/* Shift + tab */ if (document.activeElement === firstFocusableEl) {
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lastFocusableEl.focus();
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event.preventDefault();
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}
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} /* Tab */ else {
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if (document.activeElement === lastFocusableEl) {
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firstFocusableEl.focus();
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event.preventDefault();
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}
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}
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}
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// Open modal
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handleModalOpen(modal);
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}
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/**
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* Display pop up window.
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*
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* @param {string} url Url to open
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* @param {string} windowName windowName
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* @return {undefined}
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*/
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displayPopUp(url, windowName) {
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window.open(url, windowName, "left=100,top=100,width=430,height=600");
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}
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duplicateInput(event) {
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const trigger = event.currentTarget;
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const input_id = trigger.dataset["duplicate"];
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const orig = document.getElementById(input_id);
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const parent = orig.parentNode;
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const new_count = parent.querySelectorAll("input").length + 1;
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let input = orig.cloneNode();
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input.id += "-" + new_count;
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input.value = "";
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let label = parent.querySelector("label").cloneNode();
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label.setAttribute("for", input.id);
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parent.appendChild(label);
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parent.appendChild(input);
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}
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/**
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* Set up a "click-to-copy" component from a textarea element
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* with `data-copytext`, `data-copytext-label`, `data-copytext-success`
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* attributes.
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*
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* @param {object} node - DOM node of the text container
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* @return {undefined}
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*/
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copyText(textareaEl) {
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const text = textareaEl.textContent;
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const copyButtonEl = document.createElement("button");
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copyButtonEl.textContent = textareaEl.dataset.copytextLabel;
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copyButtonEl.classList.add("button", "is-small", "is-primary", "is-light");
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copyButtonEl.addEventListener("click", () => {
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navigator.clipboard.writeText(text).then(function () {
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textareaEl.classList.add("is-success");
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copyButtonEl.classList.replace("is-primary", "is-success");
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copyButtonEl.textContent = textareaEl.dataset.copytextSuccess;
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});
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});
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textareaEl.parentNode.appendChild(copyButtonEl);
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}
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/**
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* Handle the details dropdown component.
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*
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* @param {Event} event - Event fired by a `details` element
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* with the `dropdown` class name, on toggle.
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* @return {undefined}
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*/
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handleDetailsDropdown(event) {
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const detailsElement = event.target;
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const summaryElement = detailsElement.querySelector("summary");
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const menuElement = detailsElement.querySelector(".dropdown-menu");
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const htmlElement = document.querySelector("html");
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if (detailsElement.open) {
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// Focus first menu element
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menuElement
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.querySelectorAll("a[href]:not([disabled]), button:not([disabled])")[0]
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.focus();
|
|
|
|
// Enable focus trap
|
|
menuElement.addEventListener("keydown", this.handleFocusTrap);
|
|
|
|
// Close on Esc
|
|
detailsElement.addEventListener("keydown", handleEscKey);
|
|
|
|
// Clip page if Mobile
|
|
if (this.isMobile()) {
|
|
htmlElement.classList.add("is-clipped");
|
|
}
|
|
} else {
|
|
summaryElement.focus();
|
|
|
|
// Disable focus trap
|
|
menuElement.removeEventListener("keydown", this.handleFocusTrap);
|
|
|
|
// Unclip page
|
|
if (this.isMobile()) {
|
|
htmlElement.classList.remove("is-clipped");
|
|
}
|
|
}
|
|
|
|
function handleEscKey(event) {
|
|
if (event.key !== "Escape") {
|
|
return;
|
|
}
|
|
|
|
summaryElement.click();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Check if windows matches mobile media query.
|
|
*
|
|
* @return {Boolean}
|
|
*/
|
|
isMobile() {
|
|
return window.matchMedia("(max-width: 768px)").matches;
|
|
}
|
|
|
|
/**
|
|
* Focus trap handler
|
|
*
|
|
* @param {Event} event - Keydown event.
|
|
* @return {undefined}
|
|
*/
|
|
handleFocusTrap(event) {
|
|
if (event.key !== "Tab") {
|
|
return;
|
|
}
|
|
|
|
const focusableEls = event.currentTarget.querySelectorAll(
|
|
[
|
|
"a[href]:not([disabled])",
|
|
"button:not([disabled])",
|
|
"textarea:not([disabled])",
|
|
'input:not([type="hidden"]):not([disabled])',
|
|
"select:not([disabled])",
|
|
"details:not([disabled])",
|
|
'[tabindex]:not([tabindex="-1"]):not([disabled])',
|
|
].join(",")
|
|
);
|
|
const firstFocusableEl = focusableEls[0];
|
|
const lastFocusableEl = focusableEls[focusableEls.length - 1];
|
|
|
|
if (event.shiftKey) {
|
|
/* Shift + tab */ if (document.activeElement === firstFocusableEl) {
|
|
lastFocusableEl.focus();
|
|
event.preventDefault();
|
|
}
|
|
} /* Tab */ else {
|
|
if (document.activeElement === lastFocusableEl) {
|
|
firstFocusableEl.focus();
|
|
event.preventDefault();
|
|
}
|
|
}
|
|
}
|
|
})();
|