e621 highlight searched tags

Higghlight searched tags in the tag panel on the left side of the page

K instalaci tototo skriptu si budete muset nainstalovat rozšíření jako Tampermonkey, Greasemonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Userscripts.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat manažer uživatelských skriptů.

(Už mám manažer uživatelských skriptů, nechte mě ho nainstalovat!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(Už mám manažer uživatelských stylů, nechte mě ho nainstalovat!)

// ==UserScript==
// @name            e621 highlight searched tags
// @namespace       https://greasyfork.org/ru/users/303426-титан
// @version         1.0.2
// @description     Higghlight searched tags in the tag panel on the left side of the page
// @author          Титан
// @license         GPL-3.0-only
// @match           https://e621.net/*
// @match           https://e926.net/*
// @require         https://greasyfork.org/scripts/21927-arrive-js/code/arrivejs.js
// @grant           GM_registerMenuCommand
// ==/UserScript==


//box-shadow variant:
//2px 2px 2px rgba(0, 0, 0, 0.5), -2px -2px 2px rgb(202 198 198 / 30%)
let css = `
.highlight {
	box-shadow:
		inset 1px 1px 2px rgba(0, 0, 0, 0.5),
        inset -1px -1px 2px rgba(255, 255, 255, 0.3);
	border-radius: 8px;
    padding: 3px;
	text-shadow: 0 0 3px #000;
}
.mandatory-highlight {
	background-color: #efbc4d88!important;
}
.optional-highlight {
	background-color: #9cd10099!important;
}
.wildcard-highlight {
	background-color: #8500d188!important;
}
`

GM_registerMenuCommand("Reinitialize highlights", function() {
	let TagList = document.querySelector("#tag-list");
	if (TagList) {
		RemoveHighlights(TagList);
		HighlightTags(TagList);
	}
});

function HighlightTags(TagList) {
	let searchInput = document.querySelector("#tags").textContent;
	let tags = TagList.querySelectorAll("ul > li a.search-tag");
	let searchTags = searchInput.split(" ");
	// optional tags start with "~". Find  them and remove the "~"
	let searchTagsOptional = searchTags.filter(tag => tag.startsWith("~")).map(tag => ReplaceEvery(tag.slice(1), "_", " "));
	// wildcard tags... have a wildcard somewhere
	let searchTagsWildcard = searchTags.filter(tag => tag.includes("*")).map(tag => ReplaceEvery(tag, "_", " "));
	// other tags are mandatory
	let searchTagsMandatory = searchTags.filter(tag => !tag.startsWith("~") && !tag.startsWith("-") && !tag.includes("*")).map(tag => ReplaceEvery(tag, "_", " "));

	// highlight tags
	tags.forEach(tag => {
		let tagText = tag.textContent.toLowerCase()
		let tagClassList = ["highlight"];
		if (searchTagsMandatory.includes(tagText)) {
			tagClassList.push("mandatory-highlight");
		} else if (searchTagsOptional.includes(tagText)) {
			tagClassList.push("optional-highlight");
		} else if (searchTagsWildcard.some(wildcard => {
			let regex = new RegExp(wildcard.replace("*", ".*"), "i");
			return regex.test(tagText);
		})) {
			tagClassList.push("wildcard-highlight");
		}
		if (tagClassList.length > 1)
			tag.classList.add(...tagClassList);
	});
}

function RemoveHighlights(TagList) {
	let tags = TagList.querySelectorAll("ul > li a.search-tag");
	tags.forEach(tag => {
		tag.classList.remove("highlight", "mandatory-highlight", "optional-highlight", "wildcard-highlight");
	});
}

function ReplaceEvery(string, search, replace) {
	return string.split(search).join(replace);
}


let arriveOptions = {
	fireOnAttributesModification: true,
	existing: true
};
document.arrive("#tag-list", arriveOptions, function(TagList) {
	HighlightTags(TagList);
});

// apply css
let style = document.createElement("style");
style.innerHTML = css;
document.head.appendChild(style);