97 lines
2.4 KiB
JavaScript
97 lines
2.4 KiB
JavaScript
function WPLT2() {
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}
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/**
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* Initialize WP-Liveticker 2 JS component.
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*/
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WPLT2.init = function () {
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// Get ticker elements
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WPLT2.ticker = jQuery("ul.wplt2-ticker-ajax").map(function () {
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return {s: jQuery(this).data('wplt2Ticker'), e: this};
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});
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WPLT2.widgets = jQuery("ul.wplt2-widget-ajax").map(function () {
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return {s: jQuery(this).data('wplt2Ticker'), e: this};
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});
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// Extract AJAX settings.
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WPLT2.ajaxURL = ajax_object.ajax_url;
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WPLT2.nonce = ajax_object.nonce;
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WPLT2.pollInterval = ajax_object.poll_interval;
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// Trigger update, if necessary.
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if ((WPLT2.ticker.length > 0 || WPLT2.widgets.length) && WPLT2.pollInterval > 0) {
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setTimeout(WPLT2.update, WPLT2.pollInterval);
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}
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};
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/**
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* Update liveticker on current page via AJAX call.
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*/
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WPLT2.update = function () {
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// Extract ticker-slug, limit and timestamp of last poll.
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const updateReq = jQuery.merge(
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jQuery.map(WPLT2.ticker, function (e, i) {
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return {s: e.s, l: jQuery(e.e).data('wplt2Limit'), t: jQuery(e.e).data('wplt2Last')};
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}),
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jQuery.map(WPLT2.widgets, function (e, i) {
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return {w: e.s, l: jQuery(e.e).data('wplt2Limit'), t: jQuery(e.e).data('wplt2Last')};
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})
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);
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// Issue AJAX request.
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jQuery.post(
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WPLT2.ajaxURL,
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{
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'action' : 'wplt2_update-ticks',
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'_ajax_nonce': WPLT2.nonce,
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'update' : updateReq
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},
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function (res) {
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try {
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const update = JSON.parse(res);
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if (update) {
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jQuery.each(update, function (i, u) {
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jQuery.each(WPLT2.ticker, function (j, t) {
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if (t.s === u.s) {
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WPLT2.updateHTML(t.e, u.h, u.t);
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}
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});
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jQuery.each(WPLT2.widgets, function (j, t) {
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if (t.s === u.w) {
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WPLT2.updateHTML(t.e, u.h, u.t);
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}
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});
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});
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}
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// Re-trigger update.
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setTimeout(WPLT2.update, WPLT2.pollInterval);
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} catch (e) {
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console.warn('WP-Liveticker 2 AJAX update failed, stopping automatic updates.')
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}
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}
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);
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};
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/**
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* Do actual update of HTML code.
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*
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* @param e The element.
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* @param h The new HTML code.
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* @param t Timestamp of update.
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*/
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WPLT2.updateHTML = function(e, h, t) {
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// Prepend HTML of new ticks.
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jQuery(e).prepend(h);
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// Remove tail, if limit is set.
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const l = jQuery(e).data('wplt2Limit');
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if (l > 0) {
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jQuery(e).find('li').slice(l).remove();
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}
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// Update last poll timestamp.
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jQuery(e).data('wplt2Last', t);
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};
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jQuery(document).ready(function ($) {
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// Trigger periodic update of livetickers.
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WPLT2.init();
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});
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