mirror of
https://github.com/Mottie/tablesorter.git
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77 lines
2.8 KiB
JavaScript
77 lines
2.8 KiB
JavaScript
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/*! Widget: storage */
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;(function ($, window, document) {
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'use strict';
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var ts = $.tablesorter = $.tablesorter || {};
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// *** Store data in local storage, with a cookie fallback ***
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/* IE7 needs JSON library for JSON.stringify - (http://caniuse.com/#search=json)
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if you need it, then include https://github.com/douglascrockford/JSON-js
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$.parseJSON is not available is jQuery versions older than 1.4.1, using older
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versions will only allow storing information for one page at a time
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// *** Save data (JSON format only) ***
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// val must be valid JSON... use http://jsonlint.com/ to ensure it is valid
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var val = { "mywidget" : "data1" }; // valid JSON uses double quotes
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// $.tablesorter.storage(table, key, val);
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$.tablesorter.storage(table, 'tablesorter-mywidget', val);
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// *** Get data: $.tablesorter.storage(table, key); ***
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v = $.tablesorter.storage(table, 'tablesorter-mywidget');
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// val may be empty, so also check for your data
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val = (v && v.hasOwnProperty('mywidget')) ? v.mywidget : '';
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alert(val); // "data1" if saved, or "" if not
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*/
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ts.storage = function(table, key, value, options) {
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table = $(table)[0];
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var cookieIndex, cookies, date,
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hasLocalStorage = false,
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values = {},
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c = table.config,
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$table = $(table),
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id = options && options.id || $table.attr(options && options.group ||
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'data-table-group') || table.id || $('.tablesorter').index( $table ),
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url = options && options.url || $table.attr(options && options.page ||
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'data-table-page') || c && c.fixedUrl || window.location.pathname;
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// https://gist.github.com/paulirish/5558557
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if ('localStorage' in window) {
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try {
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window.localStorage.setItem('_tmptest', 'temp');
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hasLocalStorage = true;
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window.localStorage.removeItem('_tmptest');
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} catch(error) {}
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}
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// *** get value ***
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if ($.parseJSON) {
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if (hasLocalStorage) {
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values = $.parseJSON(localStorage[key] || 'null') || {};
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} else {
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// old browser, using cookies
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cookies = document.cookie.split(/[;\s|=]/);
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// add one to get from the key to the value
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cookieIndex = $.inArray(key, cookies) + 1;
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values = (cookieIndex !== 0) ? $.parseJSON(cookies[cookieIndex] || 'null') || {} : {};
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}
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}
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// allow value to be an empty string too
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if ((value || value === '') && window.JSON && JSON.hasOwnProperty('stringify')) {
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// add unique identifiers = url pathname > table ID/index on page > data
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if (!values[url]) {
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values[url] = {};
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}
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values[url][id] = value;
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// *** set value ***
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if (hasLocalStorage) {
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localStorage[key] = JSON.stringify(values);
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} else {
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date = new Date();
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date.setTime(date.getTime() + (31536e+6)); // 365 days
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document.cookie = key + '=' + (JSON.stringify(values)).replace(/\"/g,'\"') + '; expires=' + date.toGMTString() + '; path=/';
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}
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} else {
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return values && values[url] ? values[url][id] : '';
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}
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};
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})(jQuery, window, document);
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