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miniflux/server/static/js/app.js
2017-11-21 14:44:47 -08:00

407 lines
12 KiB
JavaScript

/*jshint esversion: 6 */
(function() {
'use strict';
class KeyboardHandler {
constructor() {
this.queue = [];
this.shortcuts = {};
}
on(combination, callback) {
this.shortcuts[combination] = callback;
}
listen() {
document.onkeydown = (event) => {
if (this.isEventIgnored(event)) {
return;
}
let key = this.getKey(event);
this.queue.push(key);
for (let combination in this.shortcuts) {
let keys = combination.split(" ");
if (keys.every((value, index) => value === this.queue[index])) {
this.queue = [];
this.shortcuts[combination]();
return;
}
if (keys.length === 1 && key === keys[0]) {
this.queue = [];
this.shortcuts[combination]();
return;
}
}
if (this.queue.length >= 2) {
this.queue = [];
}
};
}
isEventIgnored(event) {
return event.target.tagName === "INPUT" || event.target.tagName === "TEXTAREA";
}
getKey(event) {
const mapping = {
'Esc': 'Escape',
'Up': 'ArrowUp',
'Down': 'ArrowDown',
'Left': 'ArrowLeft',
'Right': 'ArrowRight'
};
for (let key in mapping) {
if (mapping.hasOwnProperty(key) && key === event.key) {
return mapping[key];
}
}
return event.key;
}
}
class FormHandler {
static handleSubmitButtons() {
let elements = document.querySelectorAll("form");
elements.forEach(function (element) {
element.onsubmit = function () {
let button = document.querySelector("button");
if (button) {
button.innerHTML = button.dataset.labelLoading;
button.disabled = true;
}
};
});
}
}
class MouseHandler {
onClick(selector, callback) {
let elements = document.querySelectorAll(selector);
elements.forEach((element) => {
element.onclick = (event) => {
event.preventDefault();
callback(event);
};
});
}
}
class App {
run() {
FormHandler.handleSubmitButtons();
let keyboardHandler = new KeyboardHandler();
keyboardHandler.on("g u", () => this.goToPage("unread"));
keyboardHandler.on("g h", () => this.goToPage("history"));
keyboardHandler.on("g f", () => this.goToPage("feeds"));
keyboardHandler.on("g c", () => this.goToPage("categories"));
keyboardHandler.on("g s", () => this.goToPage("settings"));
keyboardHandler.on("ArrowLeft", () => this.goToPrevious());
keyboardHandler.on("ArrowRight", () => this.goToNext());
keyboardHandler.on("j", () => this.goToPrevious());
keyboardHandler.on("p", () => this.goToPrevious());
keyboardHandler.on("k", () => this.goToNext());
keyboardHandler.on("n", () => this.goToNext());
keyboardHandler.on("h", () => this.goToPage("previous"));
keyboardHandler.on("l", () => this.goToPage("next"));
keyboardHandler.on("o", () => this.openSelectedItem());
keyboardHandler.on("v", () => this.openOriginalLink());
keyboardHandler.on("m", () => this.toggleEntryStatus());
keyboardHandler.on("A", () => this.markPageAsRead());
keyboardHandler.listen();
let mouseHandler = new MouseHandler();
mouseHandler.onClick("a[data-on-click=markPageAsRead]", () => this.markPageAsRead());
mouseHandler.onClick("a[data-confirm]", (event) => this.confirm(event));
if (document.documentElement.clientWidth < 600) {
mouseHandler.onClick(".logo", () => this.toggleMainMenu());
mouseHandler.onClick(".header nav li", (event) => this.clickMenuListItem(event));
}
}
remove(url) {
let request = new Request(url, {
method: "POST",
cache: "no-cache",
credentials: "include",
headers: new Headers({
"X-Csrf-Token": this.getCsrfToken()
})
});
fetch(request).then(() => {
window.location.reload();
});
}
confirm(event) {
let questionElement = document.createElement("span");
let linkElement = event.target;
let containerElement = linkElement.parentNode;
linkElement.style.display = "none";
let yesElement = document.createElement("a");
yesElement.href = "#";
yesElement.appendChild(document.createTextNode(linkElement.dataset.labelYes));
yesElement.onclick = (event) => {
event.preventDefault();
let loadingElement = document.createElement("span");
loadingElement.className = "loading";
loadingElement.appendChild(document.createTextNode(linkElement.dataset.labelLoading));
questionElement.remove();
containerElement.appendChild(loadingElement);
this.remove(linkElement.dataset.url);
};
let noElement = document.createElement("a");
noElement.href = "#";
noElement.appendChild(document.createTextNode(linkElement.dataset.labelNo));
noElement.onclick = (event) => {
event.preventDefault();
linkElement.style.display = "inline";
questionElement.remove();
};
questionElement.className = "confirm";
questionElement.appendChild(document.createTextNode(linkElement.dataset.labelQuestion + " "));
questionElement.appendChild(yesElement);
questionElement.appendChild(document.createTextNode(", "));
questionElement.appendChild(noElement);
containerElement.appendChild(questionElement);
}
clickMenuListItem(event) {
let element = event.target;console.log(element);
if (element.tagName === "A") {
window.location.href = element.getAttribute("href");
} else {
window.location.href = element.querySelector("a").getAttribute("href");
}
}
toggleMainMenu() {
let menu = document.querySelector(".header nav ul");
if (this.isVisible(menu)) {
menu.style.display = "none";
} else {
menu.style.display = "block";
}
}
updateEntriesStatus(entryIDs, status) {
let url = document.body.dataset.entriesStatusUrl;
let request = new Request(url, {
method: "POST",
cache: "no-cache",
credentials: "include",
body: JSON.stringify({entry_ids: entryIDs, status: status}),
headers: new Headers({
"Content-Type": "application/json",
"X-Csrf-Token": this.getCsrfToken()
})
});
fetch(request);
}
markPageAsRead() {
let items = this.getVisibleElements(".items .item");
let entryIDs = [];
items.forEach((element) => {
element.classList.add("item-status-read");
entryIDs.push(parseInt(element.dataset.id, 10));
});
if (entryIDs.length > 0) {
this.updateEntriesStatus(entryIDs, "read");
}
this.goToPage("next");
}
toggleEntryStatus() {
let currentItem = document.querySelector(".current-item");
if (currentItem !== null) {
let entryID = parseInt(currentItem.dataset.id, 10);
let statuses = {read: "unread", unread: "read"};
for (let currentStatus in statuses) {
let newStatus = statuses[currentStatus];
if (currentItem.classList.contains("item-status-" + currentStatus)) {
this.goToNextListItem();
currentItem.classList.remove("item-status-" + currentStatus);
currentItem.classList.add("item-status-" + newStatus);
this.updateEntriesStatus([entryID], newStatus);
break;
}
}
}
}
openOriginalLink() {
let entryLink = document.querySelector(".entry h1 a");
if (entryLink !== null) {
this.openNewTab(entryLink.getAttribute("href"));
return;
}
let currentItemOriginalLink = document.querySelector(".current-item a[data-original-link]");
if (currentItemOriginalLink !== null) {
this.openNewTab(currentItemOriginalLink.getAttribute("href"));
}
}
openSelectedItem() {
let currentItemLink = document.querySelector(".current-item .item-title a");
if (currentItemLink !== null) {
window.location.href = currentItemLink.getAttribute("href");
}
}
goToPage(page) {
let element = document.querySelector("a[data-page=" + page + "]");
if (element) {
document.location.href = element.href;
}
}
goToPrevious() {
if (this.isListView()) {
this.goToPreviousListItem();
} else {
this.goToPage("previous");
}
}
goToNext() {
if (this.isListView()) {
this.goToNextListItem();
} else {
this.goToPage("next");
}
}
goToPreviousListItem() {
let items = this.getVisibleElements(".items .item");
if (items.length === 0) {
return;
}
if (document.querySelector(".current-item") === null) {
items[0].classList.add("current-item");
return;
}
for (let i = 0; i < items.length; i++) {
if (items[i].classList.contains("current-item")) {
items[i].classList.remove("current-item");
if (i - 1 >= 0) {
items[i - 1].classList.add("current-item");
this.scrollPageTo(items[i - 1]);
}
break;
}
}
}
goToNextListItem() {
let items = this.getVisibleElements(".items .item");
if (items.length === 0) {
return;
}
if (document.querySelector(".current-item") === null) {
items[0].classList.add("current-item");
return;
}
for (let i = 0; i < items.length; i++) {
if (items[i].classList.contains("current-item")) {
items[i].classList.remove("current-item");
if (i + 1 < items.length) {
items[i + 1].classList.add("current-item");
this.scrollPageTo(items[i + 1]);
}
break;
}
}
}
getVisibleElements(selector) {
let elements = document.querySelectorAll(selector);
let result = [];
for (let i = 0; i < elements.length; i++) {
if (this.isVisible(elements[i])) {
result.push(elements[i]);
}
}
return result;
}
isListView() {
return document.querySelector(".items") !== null;
}
scrollPageTo(item) {
let windowScrollPosition = window.pageYOffset;
let windowHeight = document.documentElement.clientHeight;
let viewportPosition = windowScrollPosition + windowHeight;
let itemBottomPosition = item.offsetTop + item.offsetHeight;
if (viewportPosition - itemBottomPosition < 0 || viewportPosition - item.offsetTop > windowHeight) {
window.scrollTo(0, item.offsetTop - 10);
}
}
openNewTab(url) {
let win = window.open(url, "_blank");
win.focus();
}
isVisible(element) {
return element.offsetParent !== null;
}
getCsrfToken() {
let element = document.querySelector("meta[name=X-CSRF-Token]");
if (element !== null) {
return element.getAttribute("value");
}
return "";
}
}
document.addEventListener("DOMContentLoaded", function() {
(new App()).run();
});
})();