Google Reader All Feed Refresh

google_reader_all_feed_refresh.user.js

// ==UserScript==
// @id             google-reader-all-feed-refresh@http://twitter.com/xulapp
// @name           Google Reader All Feed Refresh
// @description    すべてのフィードを強制的に更新させます
// @include        http://www.google.tld/reader/view/*
// @include        https://www.google.tld/reader/view/*
// @charset        utf-8
// @run-at         document-end
// @namespace      http://twitter.com/xulapp
// @author         xulapp
// @license        MIT License
// @version        2011/08/12 22:00 +09:00
// ==/UserScript==


(function googleReaderAllFeedRefresh() {
	var readTag = encodeURIComponent('user/' + unsafeWindow._USER_ID + '/state/com.google/read');
	var count = 0;
	var total = 0;

	function onListLoad(res) {
		var {subscriptions} = JSON.parse(res.responseText);
		total = subscriptions.length;
		progress.max = total;
		button.parentNode.replaceChild(progress, button);
		subscriptions.forEach(request);
	}
	function request(feed) {
		updateCount(1);
		var req = GM_xmlhttpRequest({
			url: '/reader/api/0/stream/contents/feed/' + encodeURIComponent(feed.id.replace(/^[^/]+\//, '')) + '?refresh=true&n=1&xt=' + readTag,
			onreadystatechange: function({readyState}) {
				if (readyState < 3 || !req) return;

				req.abort();
				req = null;
				updateCount(-1);
			},
		});
	}
	function updateCount(diff) {
		count += diff || 0;
		progress.value = total - count;
		progress.title = count + '/' + total;
		if (!count)
			onFinish();
	}
	function onFinish() {
		lhnSubscriptions.classList.remove('sub-tree-refreshing');
		progress.parentNode.replaceChild(button, progress);
		document.getElementById('sub-tree-header').click();
	}

	var lhnSubscriptions = document.getElementById('lhn-subscriptions');

	var button = document.createElement('span');
	button.style.margin = '0 5px';
	button.style.fontWeight = 'bold';
	button.style.cursor = 'pointer';
	button.className = 'unselectable';
	button.textContent = '取得';
	button.addEventListener('click', function() {
		if (count) return;

		lhnSubscriptions.classList.add('sub-tree-refreshing');
		GM_xmlhttpRequest({
			url: '/reader/api/0/subscription/list?output=json',
			onload: onListLoad,
		});
	}, false);

	var progress = document.createElement('progress');
	progress.style.width = '64px';

	var subTreeHeader = document.getElementById('sub-tree-header');
	subTreeHeader.parentNode.insertBefore(button, subTreeHeader.nextSibling);
})();