370 lines
8.2 KiB
JavaScript
370 lines
8.2 KiB
JavaScript
(function() {
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var feeds = [];
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var queue = [];
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var queue_length = 5;
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function switch_status(item_id)
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{
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var request = new XMLHttpRequest();
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request.onreadystatechange = function() {
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if (request.readyState === 4 && is_listing()) {
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var response = JSON.parse(request.responseText);
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if (response.status == "read" || response.status == "unread") {
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find_next_item();
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remove_item(response.item_id);
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}
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}
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}
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request.open("POST", "?action=change-item-status&id=" + item_id, true);
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request.send();
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}
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function mark_as_read(item_id)
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{
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var request = new XMLHttpRequest();
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request.onload = function() {
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remove_item(item_id);
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};
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request.open("POST", "?action=mark-item-read&id=" + item_id, true);
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request.send();
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}
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function mark_as_unread(item_id)
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{
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var request = new XMLHttpRequest();
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request.open("POST", "?action=mark-item-unread&id=" + item_id, true);
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request.send();
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}
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function show_refresh_icon(feed_id)
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{
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var container = document.getElementById("loading-feed-" + feed_id);
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if (container) {
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var img = document.createElement("img");
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img.src = "./assets/img/refresh.gif";
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container.appendChild(img);
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}
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}
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function hide_refresh_icon(feed_id)
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{
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var container = document.getElementById("loading-feed-" + feed_id);
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if (container) {
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container.innerHTML = "";
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}
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}
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function refresh_feed(feed_id, callback)
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{
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if (! feed_id) {
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return false;
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}
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show_refresh_icon(feed_id);
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var request = new XMLHttpRequest();
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request.onreadystatechange = function() {
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if (request.readyState === 4) {
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hide_refresh_icon(feed_id);
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try {
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var response = JSON.parse(this.responseText);
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if (callback) {
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callback(response);
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}
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if (! response.result) {
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//window.alert('Unable to refresh this feed: ' + feed_id);
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}
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}
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catch (e) {}
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}
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};
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request.open("POST", "?action=refresh-feed&feed_id=" + feed_id, true);
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request.send();
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return true;
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}
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function get_feeds()
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{
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var links = document.getElementsByTagName("a");
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for (var i = 0, ilen = links.length; i < ilen; i++) {
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var feed_id = links[i].getAttribute('data-feed-id');
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if (feed_id) {
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feeds.push(parseInt(feed_id));
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}
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}
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}
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function refresh_all()
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{
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get_feeds();
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var interval = setInterval(function() {
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while (feeds.length > 0 && queue.length < queue_length) {
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var feed_id = feeds.shift();
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queue.push(feed_id);
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refresh_feed(feed_id, function(response) {
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var index = queue.indexOf(response.feed_id);
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if (index >= 0) {
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queue.splice(index, 1);
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}
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if (feeds.length == 0 && queue.length == 0) {
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clearInterval(interval);
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window.location.href = "?action=unread";
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}
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});
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}
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}, 100);
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}
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function remove_item(item_id)
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{
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var item = document.getElementById("item-" + item_id);
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if (item) item.parentNode.removeChild(item);
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}
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function open_original_item()
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{
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var link = document.getElementById("original-item");
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if (link) {
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if (link.getAttribute("data-action") == "mark-read") {
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mark_as_read(link.getAttribute("data-item-id"));
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find_next_item();
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}
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link.click();
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}
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}
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function open_item()
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{
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var link = document.getElementById("open-item");
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if (link) link.click();
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}
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function open_next_item()
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{
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var link = document.getElementById("next-item");
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if (link) {
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link.click();
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}
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else if (is_listing()) {
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find_next_item();
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}
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}
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function open_previous_item()
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{
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var link = document.getElementById("previous-item");
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if (link) {
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link.click();
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}
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else if (is_listing()) {
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find_previous_item();
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}
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}
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function change_item_status()
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{
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var item = document.getElementById("current-item");
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if (item) switch_status(item.getAttribute("data-item-id"));
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}
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function set_links_item(item_id)
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{
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var link = document.getElementById("original-item");
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if (link) link.id = "original-" + link.getAttribute("data-item-id");
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var link = document.getElementById("open-item");
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if (link) link.id = "open-" + link.getAttribute("data-item-id");
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var link = document.getElementById("original-" + item_id);
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if (link) link.id = "original-item";
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var link = document.getElementById("open-" + item_id);
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if (link) link.id = "open-item";
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}
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function find_next_item()
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{
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var items = document.getElementsByTagName("article");
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if (! document.getElementById("current-item")) {
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items[0].id = "current-item";
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set_links_item(items[0].getAttribute("data-item-id"));
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}
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else {
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for (var i = 0, ilen = items.length; i < ilen; i++) {
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if (items[i].id == "current-item") {
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items[i].id = "item-" + items[i].getAttribute("data-item-id");
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if (i + 1 < ilen) {
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items[i + 1].id = "current-item";
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set_links_item(items[i + 1].getAttribute("data-item-id"));
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}
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break;
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}
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}
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}
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}
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function find_previous_item()
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{
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var items = document.getElementsByTagName("article");
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if (! document.getElementById("current-item")) {
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items[items.length - 1].id = "current-item";
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set_links_item(items[items.length - 1].getAttribute("data-item-id"));
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}
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else {
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for (var i = items.length - 1; i >= 0; i--) {
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if (items[i].id == "current-item") {
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items[i].id = "item-" + items[i].getAttribute("data-item-id");
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if (i - 1 >= 0) {
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items[i - 1].id = "current-item";
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set_links_item(items[i - 1].getAttribute("data-item-id"));
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}
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break;
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}
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}
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}
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}
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function is_listing()
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{
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if (document.getElementById("listing")) {
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return true;
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}
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return false;
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}
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document.onclick = function(e) {
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var action = e.target.getAttribute("data-action");
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if (action) {
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switch (action) {
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case 'refresh-all':
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e.preventDefault();
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refresh_all();
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break;
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case 'refresh-feed':
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e.preventDefault();
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var feed_id = e.target.getAttribute("data-feed-id");
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refresh_feed(feed_id);
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break;
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case 'mark-read':
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var item_id = e.target.getAttribute("data-item-id");
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mark_as_read(item_id);
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break;
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}
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}
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};
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document.onkeypress = function(e) {
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switch (e.keyCode || e.which) {
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case 112:
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open_previous_item();
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break;
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case 110:
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open_next_item();
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break;
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case 118:
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open_original_item();
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break;
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case 111:
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open_item();
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break;
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case 109:
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change_item_status();
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break;
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}
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};
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})(); |