(function ($) { /*** * A sample AJAX data store implementation. * Right now, it's hooked up to load Hackernews stories, but can * easily be extended to support any JSONP-compatible backend that accepts paging parameters. */ function RemoteModel() { // private var PAGESIZE = 10; var data = {length: 0}; var h_request = null; var req = null; // ajax request // events var onDataLoading = new Slick.Event(); var onDataLoaded = new Slick.Event(); function init() { } function isDataLoaded(from, to) { for (var i = from; i <= to; i++) { if (data[i] == undefined || data[i] == null) { return false; } } return true; } function clear() { for (var key in data) { delete data[key]; } data.length = 0; } function ensureData(from, to) { if (req) { req.abort(); for (var i = req.fromPage; i <= req.toPage; i++) { data[i * PAGESIZE] = undefined; } } if (from < 0) { from = 0; } if (data.length > 0) { to = Math.min(to, data.length - 1); } var fromPage = Math.floor(from / PAGESIZE); var toPage = Math.floor(to / PAGESIZE); while (data[fromPage * PAGESIZE] !== undefined && fromPage < toPage) fromPage++; while (data[toPage * PAGESIZE] !== undefined && fromPage < toPage) toPage--; if (fromPage > toPage || ((fromPage == toPage) && data[fromPage * PAGESIZE] !== undefined)) { // TODO: look-ahead onDataLoaded.notify({from: from, to: to}); return; } var recStart = (fromPage * PAGESIZE); var recCount = (((toPage - fromPage) * PAGESIZE) + PAGESIZE); var url = "https://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20rss" + "(" + recStart + "%2C" + recCount + ")" + "%20where%20url%3D%22http%3A%2F%2Frss.news.yahoo.com%2Frss%2Ftopstories%22" + "&format=json"; if (h_request != null) { clearTimeout(h_request); } h_request = setTimeout(function () { for (var i = fromPage; i <= toPage; i++) data[i * PAGESIZE] = null; // null indicates a 'requested but not available yet' onDataLoading.notify({from: from, to: to}); req = $.jsonp({ url: url, callbackParameter: "callback", cache: true, success: function (json, textStatus, xOptions) { onSuccess(json, recStart) }, error: function () { onError(fromPage, toPage) } }); req.fromPage = fromPage; req.toPage = toPage; }, 50); } function onError(fromPage, toPage) { alert("error loading pages " + fromPage + " to " + toPage); } // SAMPLE DATA // { // "query": { // "count": 40, // "created": "2015-03-03T00:34:00Z", // "lang": "en-US", // "results": { // "item": [ // { // "title": "Netanyahu assails Iran deal, touts US-Israel ties", // "description": "
WASHINGTON (AP) — Seeking to lower tensions, Benjamin Netanyahu and U.S. officials cast their dispute over Iran as a family squabble on Monday, even as the Israeli leader claimed President Barack Obama did not — and could not — fully understand his nation's vital security concerns.
WASHINGTON (AP) — Seeking to lower tensions, Benjamin Netanyahu and U.S. officials cast their dispute over Iran as a family squabble on Monday, even as the Israeli leader claimed President Barack Obama did not — and could not — fully understand his nation's vital security concerns.