https://www.blueline.ca/wp-content/themes/kadence-pubx/js/pubx-ad-collapse.js?ver=1788103837

1/**
2 * PubX ad-collapse: removes dead space when GPT returns no creative or when
3 * an ad blocker / network failure prevents GPT from loading at all.
4 *
5 * Two signals drive this:
6 *   1. `slotRenderEnded` with `event.isEmpty = true` — handled in the GPT
7 *      config in functions.php; adds `.pubx-gpt-slot--empty` on the slot div.
8 *   2. GPT never runs (blocker, DNS block, offline) — covered here via:
9 *        a. A hard timeout that marks any unfilled slot as empty, and
10 *        b. A `pubx-ad-blocked` flag on <html> when googletag never becomes
11 *           ready, so stylesheet rules can hide every ad shell at once.
12 *
13 * CSS in style.css does the actual hiding; this file only toggles classes.
14 */
15(function () {
16	'use strict';
17
18	var SLOT_SELECTOR    = '[id^="div-gpt-ad-"]';
19	var SLOT_CLASS       = 'pubx-gpt-slot';
20	var EMPTY_CLASS      = 'pubx-gpt-slot--empty';
21	var BLOCKED_CLASS    = 'pubx-ad-blocked';
22	/* How long to wait for GPT to render a slot before declaring it dead. Chosen
23	 * to be long enough to ride out slow networks but short enough that empty
24	 * real estate doesn't sit on the page. */
25	var SLOT_TIMEOUT_MS  = 4500;
26	/* How long to wait for `googletag.apiReady` before declaring GPT blocked. */
27	var GPT_TIMEOUT_MS   = 4000;
28
29	function markEmpty(slot) {
30		if (!slot || slot.classList.contains(EMPTY_CLASS)) {
31			return;
32		}
33		slot.classList.add(EMPTY_CLASS);
34	}
35
36	/** A filled GPT slot always has an iframe descendant (including fluid creatives). */
37	function isFilled(slot) {
38		return !!(slot && slot.querySelector('iframe'));
39	}
40
41	/** Ensures every GPT slot div carries `.pubx-gpt-slot` so CSS can target uniformly. */
42	function tagSlots() {
43		var slots = document.querySelectorAll(SLOT_SELECTOR);
44		for (var i = 0; i < slots.length; i++) {
45			slots[i].classList.add(SLOT_CLASS);
46		}
47		return slots;
48	}
49
50	/** Schedules a fallback check per slot in case `slotRenderEnded` never fires. */
51	function watchSlots(slots) {
52		for (var i = 0; i < slots.length; i++) {
53			(function (slot) {
54				window.setTimeout(function () {
55					if (!isFilled(slot)) {
56						markEmpty(slot);
57					}
58				}, SLOT_TIMEOUT_MS);
59			})(slots[i]);
60		}
61	}
62
63	/**
64	 * Flags ad-blocker / network failure if googletag never initialises. We
65	 * avoid bait-div heuristics (false positives from privacy extensions that
66	 * clean up the DOM) and rely on the one thing that actually matters:
67	 * whether GPT's API is reachable.
68	 */
69	function watchGpt() {
70		window.setTimeout(function () {
71			var gt = window.googletag;
72			if (!gt || !gt.apiReady) {
73				document.documentElement.classList.add(BLOCKED_CLASS);
74			}
75		}, GPT_TIMEOUT_MS);
76	}
77
78	function init() {
79		var slots = tagSlots();
80		watchSlots(slots);
81		watchGpt();
82	}
83
84	if (document.readyState === 'loading') {
85		document.addEventListener('DOMContentLoaded', init);
86	} else {
87		init();
88	}
89})();