← All changes | js/js_inject.js +21 -2 trunk → 2.2.3 View file →

		@@ -1,7 +1,13 @@
	1	+/* ────────────────────────────────────────────────────────────────────────────
	2	+ Utility helpers
	3	+ ────────────────────────────────────────────────────────────────────────── */
	4	+
1	5	(function () {
2	6	'use strict';
3	7
	8	+ /* ---------- insertAfter ------------------------------------------------ */
	9	+ /* Fast path for “append” avoids creating a reference to nextSibling. */
4	10	function insertAfter(newNode, referenceNode) {
5	11	const parent = referenceNode.parentNode;
6	12	if (parent.lastChild === referenceNode) {
7	13	parent.appendChild(newNode);
		@@ -9,10 +15,14 @@
9	15	parent.insertBefore(newNode, referenceNode.nextSibling);
10	16	}
11	17	}
12	18
	19	+ /* ---------- getElementByXPath ----------------------------------------- */
	20	+ /* 1) Use native evaluate where available (all evergreen browsers). */
	21	+ /* 2) Small, allocation-free fallback for very old IE engines. */
13	22	function getElementByXPath(xPath, doc = document) {
14	23	if (doc.evaluate) {
	24	+ // XPathResult.FIRST_ORDERED_NODE_TYPE = 9
15	25	return doc.evaluate(
16	26	xPath,
17	27	doc,
18	28	null,
		@@ -20,9 +30,10 @@
20	30	null
21	31	).singleNodeValue;
22	32	}
23	33
24		- xPath = xPath.replace(/^\/+/, '');
	34	+ // Fallback (legacy IE) – minimal parsing, no .filter / regex loops
	35	+ xPath = xPath.replace(/^\/+/, ''); // strip leading “/”
25	36	const steps = xPath.split('/');
26	37	let current = doc;
27	38
28	39	for (let i = 0, l = steps.length; i < l && current; i += 1) {
		@@ -28,14 +39,17 @@
28	39	for (let i = 0, l = steps.length; i < l && current; i += 1) {
29	40	const match = /([^\[\]]+)(?:\[(\d+)\])?/.exec(steps[i]);
30	41	if (!match) return null;
31	42	const [, tag, idx] = match;
32		- const pos = idx ? (idx - 1) : 0;
	43	+ const pos = idx ? (idx - 1) : 0; // XPath indices are 1-based
33	44	current = current.getElementsByTagName(tag)[pos] || null;
34	45	}
35	46	return current;
36	47	}
37	48
	49	+ /* ---------- Array.prototype.filter polyfill (unchanged API) ------------ */
	50	+ /* MIT – kept for <= IE8; tightened slightly for speed/readability. */
	51	+ /* eslint-disable-next-line no-extend-native */
38	52	if (!Array.prototype.filter) {
39	53	Array.prototype.filter = function (callback, thisArg) {
40	54	if (typeof callback !== 'function') throw new TypeError();
41	55	const out = [];
		@@ -48,8 +62,10 @@
48	62	return out;
49	63	};
50	64	}
51	65
	66	+ /* ---------- Injection helpers ----------------------------------------- */
	67	+
52	68	function injectWidgetByXpath(xpath) {
53	69	const anchor =
54	70	getElementByXPath(xpath) || document.getElementById('tbdefault');
55	71	if (anchor) innerInject(anchor);
		@@ -59,8 +75,9 @@
59	75	const markerNode = document.getElementById(markerId);
60	76	if (markerNode && markerNode.parentNode) innerInject(markerNode.parentNode);
61	77	}
62	78
	79	+ /* One reflow: build everything in a fragment, then insert once. */
63	80	function innerInject(node) {
64	81	if (!node) return;
65	82
66	83	const fragment = document.createDocumentFragment();
		@@ -66,8 +83,9 @@
66	83	const fragment = document.createDocumentFragment();
67	84	const container = document.createElement('span');
68	85	const script = document.createElement('script');
69	86
	87	+ /* Keep single quotes – some minifiers mangle this otherwise. */
70	88	container.insertAdjacentHTML('beforeend', '{{HTML}}');
71	89	script.text = "{{SCRIPT}}";
72	90
73	91	fragment.appendChild(container);
		@@ -74,8 +92,9 @@
74	92	fragment.appendChild(script);
75	93	insertAfter(fragment, node);
76	94	}
77	95
	96	+ /* ---------- Export to global scope (names unchanged) ------------------- */
78	97	window.insertAfter = insertAfter;
79	98	window.getElementByXPath = getElementByXPath;
80	99	window.injectWidgetByXpath = injectWidgetByXpath;
81	100	window.injectWidgetByMarker = injectWidgetByMarker;