Alternative search engines 2.1

Adds search on other sites for google, bing, yandex, duckduckgo. It is a version with a changed google input selector in the code of "Alternative search engines 2".

Aby zainstalować ten skrypt, wymagana jest instalacje jednego z następujących rozszerzeń: Tampermonkey, Greasemonkey lub Violentmonkey.

Aby zainstalować ten skrypt, wymagana jest instalacje jednego z następujących rozszerzeń: Tampermonkey, Violentmonkey.

Aby zainstalować ten skrypt, wymagana jest instalacje jednego z następujących rozszerzeń: Tampermonkey, Violentmonkey.

Aby zainstalować ten skrypt, wymagana będzie instalacja rozszerzenia Tampermonkey lub Userscripts.

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

Aby zainstalować ten skrypt, musisz zainstalować rozszerzenie menedżera skryptów użytkownika.

(Mam już menedżera skryptów użytkownika, pozwól mi to zainstalować!)

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.

Będziesz musiał zainstalować rozszerzenie menedżera stylów użytkownika, aby zainstalować ten styl.

Będziesz musiał zainstalować rozszerzenie menedżera stylów użytkownika, aby zainstalować ten styl.

Musisz zainstalować rozszerzenie menedżera stylów użytkownika, aby zainstalować ten styl.

(Mam już menedżera stylów użytkownika, pozwól mi to zainstalować!)

// ==UserScript==
// @name        Alternative search engines 2.1
// @description Adds search on other sites for google, bing, yandex, duckduckgo. It is a version with a changed google input selector in the code of "Alternative search engines 2".
// @namespace   sarowx@userscript
// @license     GPL version 3 or any later version; http://www.gnu.org/licenses/gpl.html
// @version     0.2.1
// @grant       none
// @noframes
// @include     /^https?://yandex\.(ru|ua|by|kz|com|com\.tr)/.*$/
// @include     /^https?://www\.google\.(am|az|by|co\.uz|com|com\.tr|com\.ua|de|ee|fi|ge|kg|kz|lt|lv|md|ru|tm)/.*$/
// @include     https://encrypted.google.com/*
// @include     /^https?://www\.bing\.com/.*$/
// @include     /^https?://duckduckgo\.com/.*$/
// ==/UserScript==

// 2015-05-25

var SEARCH_ON = '• ';
var SEARCH_ON_END = ' •';
var LINK_BOX_ID = 'oeid-box';
var ENGINES_SEPARATOR = ' - ';
var POSITION = 'left';

var ENGINES = {
	Yandex: 'https://yandex.ru/yandsearch?text=',
	Google: 'https://www.google.com/search?q=',
	Bing: 'https://www.bing.com/search?q=',
	DuckDuckGo: 'https://duckduckgo.com/?q='
};

var PLACEHOLDER_SELECTORS = [
	'.content__left', // yandex
	'#resultStats', // google
	'.sb_count', // bing
	'#links_wrapper' // duckduckgo
].join(',');

var INPUT_FIELD_SELECTORS = [
	'.input__control', // yandex
	'input[name="q"]', // google
	'#sb_form_q', // bing
	'#search_form_input' // duckduckgo
].join(',');

function onClick(event) {
	var link = event.target;
	if(link.nodeName.toLowerCase() !== 'a')
		return;
	var engineSource = ENGINES[link.engineName];
	var engineURL;
	var engineParam = '';
	if(Array.isArray(engineSource)) {
		engineParam = engineSource[1];
		engineURL = engineSource[0];
	}
	else if(typeof engineSource === 'string') {
		engineURL = engineSource;
	}
	else {
		return;
	}
	var searchText = document.querySelector(INPUT_FIELD_SELECTORS);
	if(engineURL && searchText && searchText.value.length > 0) {
		var url = engineURL + encodeURIComponent(searchText.value) + engineParam;
		window.open(url, '_blank');
	}
}

function addCSSStyle() {
	var cssStyle = document.createElement('style');
	cssStyle.type = 'text/css';
	cssStyle.textContent = [
		'#' + LINK_BOX_ID + ' {',
		'	display: inline-block;',
		'	padding-right: 10px;',
		'	padding-bottom: 3px;',
		'	color: rgb(115, 115, 115);' ,
		'	font-family: Verdana,sans-serif;',
		'	font-size: 11px;',
		'	text-align: ' + POSITION + ';',
		'	z-index: 10000;',
		'}'
	].join('\n');
	document.head.appendChild(cssStyle);
}

var createFragment = (function() {
	var setCommon = function(node, sAttr, reason) {
		var aAttr = sAttr.split(',');
		aAttr.forEach(function(attr) {
			var attrSource = /:=/.test(attr) ? attr.split(':=') : [attr, ''];
			var attrName = attrSource[0].trim();
			var attrValue = attrSource[1].trim().replace(/^(['"])([^\1]*)\1$/, '$2');
			if(reason === 'a') {
				node.setAttribute(attrName, attrValue);
			}
			else {
				node[attrName] = attrValue;
			}
		});
		return node;
	};
	var setAttr = function(node, sAttr) {
		return setCommon(node, sAttr, 'a');
	};
	var setProp = function(node, sAttr) {
		return setCommon(node, sAttr, 'p');
	};
	var createFragmentInner = function(data, fragment) {
		if(data.n) {
			var node = document.createElement(data.n);
			if(data.a)
				node = setAttr(node, data.a);
			if(data.p)
				node = setProp(node, data.p);
			if(data.s)
				node.style.cssText = data.s;
			fragment.appendChild(node);
		}
		if(data.c) {
			data.c.forEach(function(cn) {
				createFragmentInner(cn, node || fragment);
			});
		}
		if(data.t && node) {
			node.appendChild(document.createTextNode(data.t));
		}
		if(data.tc) {
			fragment.appendChild(document.createTextNode(data.tc));
		}
		if(data.dn) {
			fragment.appendChild(data.dn);
		}
		return fragment;
	};
	return function(data) {
		var fragment = document.createDocumentFragment();
		return createFragmentInner({c:data}, fragment);
	};
})();

function createLinkBox() {
	return createFragment([
		{n:'div',a:'id:="'+LINK_BOX_ID+'"',c:(function() {
			var domain = document.domain;
			var aLinks = [{tc:SEARCH_ON}];
			for(var engine in ENGINES) {
				if(domain.indexOf(engine.toLowerCase()) !== -1)
					continue;
				aLinks.push(
					{n:'a',a:'href:="javascript:void(0)"',p:'engineName:="'+engine+'"',t:engine},
					{tc:ENGINES_SEPARATOR}
				);
			}
			aLinks[aLinks.length-1] = {tc:SEARCH_ON_END};
			return aLinks;
		})()}
	]);
}

function onDOMLoad() {
	var results = document.querySelector(PLACEHOLDER_SELECTORS);
	if(!results)
		return;
	if(document.getElementById(LINK_BOX_ID))
		return;
	addCSSStyle();
	var fragment = createLinkBox();
	var linkBox = fragment.querySelector('#'+LINK_BOX_ID);
	linkBox.onclick = onClick;
	results.insertBefore(fragment, results.firstChild);
}

function addObserver(target, config, callback) {
	var observer = new MutationObserver(function(mutations) {
		mutations.forEach(function(mutation) {
			callback.call(this, mutation);
		});
	});
	observer.observe(target, config);
	return observer;
}

function removeObserver(observer) {
	observer.disconnect();
}

function getNodes() {
	var _slice = Array.slice || Function.prototype.call.bind(Array.prototype.slice);
	var trg = document.body;
	var params = { childList: true, subtree: true };
	var getNode = function(mut) {
		var addedNodes = mut.addedNodes;
		var nodes = _slice(addedNodes);
		nodes.forEach(function(node) {
			if(node.querySelector &&
					node.querySelector(PLACEHOLDER_SELECTORS)) {
				onDOMLoad();
			}
		});
	};
	var observer = addObserver(trg, params, getNode);
	window.addEventListener('unload', function(event) {
		removeObserver(observer);
	}, false);
}

onDOMLoad();
getNodes();