// ==UserScript==
// @name         Copy image with Ctrl+C (copy)
// @namespace    https://forum.mozilla-russia.org/viewtopic.php?pid=811018#p811018 Firefox Browser
// @version      1.0
// @description  Copy the image from Firefox browser using the keyboard shortcut Ctrl+C
// @author       xrun1
// @match        https://*/*
// @match        file:///*/*
// @icon         data:image/png;base64,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
// @grant        none
// ==/UserScript==

(function() {
  'use strict';
  // получаем адресную строку
  var stringPathName = window.location.pathname;
  // убираем сдвоенные слэши, бывают такие https://www.eurokdj.com//images/singles/c/sin_corona-the_rhythm_of_the_night.jpg
  stringPathName = stringPathName.trim()
    .replace('//', '/');
  // ищем позицию последней точки
  var count = stringPathName.lastIndexOf('.');
  // проверяем, есть точка? длина больше, чем позиция  последней точки?
  if (count <= 0) {
    return;
  } else if (stringPathName.length <= count + 1) {
      return;
  }
  // получаем расширение
  var img_ext = stringPathName.substring(count + 1);
  // список допустимых расширений
  const array_images = ['bmp', 'gif', 'ico','jpeg', 'jpg', 'png', 'svg', 'webp']; // gif - копируется текущий кадр; svg не работает, можно убрать
  // есть полученное расширение в списке?
  if (!array_images.includes(img_ext)) return;

// код скопирован отсюда ==>> https://openjavascript.info/2022/09/27/how-to-copy-an-image-to-the-clipboard-with-vanilla-javascript/ <<==
  const img = new Image();
  const canvas = document.createElement('canvas');
  const ctx = canvas.getContext('2d');

  // Ctrl+A
  var ctrl_a = false;
  document.addEventListener('keydown', function(event) {
    if (event.code == 'KeyA' && (event.ctrlKey || event.metaKey)) {
      if (!ctrl_a) ctrl_a = true;
    }
  });
  // Ctrl+C
  document.addEventListener('keydown', function(event) {
    if (event.code == 'KeyC' && (event.ctrlKey || event.metaKey)) {
        if (ctrl_a) {
          event.preventDefault();
          copyToClipboard(stringPathName);
        } else {
          alertTimeout("Only the link was copied!", 1000, "blue");
          navigator.clipboard.writeText(window.location);
        }
    }
  });
  // снимаем выделение кликом в любом месте и убираем признак, что Ctrl+A нажато
  document.addEventListener('click', function(event) {
    ctrl_a = false;
  });

  // Ждём нажатия Ctrl+C
  // document.addEventListener('copy', function(event) {
  //  copyToClipboard(stringPathName);
  //});

  function writeToCanvas(src) {
    return new Promise((res, rej) => {
      img.src = src;
      img.onload = function() {
        canvas.width = img.naturalWidth;
        canvas.height = img.naturalHeight;
        ctx.drawImage(img,0,0)
        canvas.toBlob((blob) => {
          res(blob);
        }, 'image/png');
      }
    });
  }

  async function copyToClipboard(src) {
    const image = await writeToCanvas(src);
    try {
      await navigator.clipboard.write([
         new ClipboardItem({
           [image.type]: image,
         })
      ]);
//      console.log("Success");
      alertTimeout("Successful image copying!", 1000, "blue");
    } catch(err) {
      console.log("Copy failed: " + err);
    }
  }

    // Выводит сообщение об успешном копировании; неуспешное запишется в лог консоли (теоретически...)
    function alertTimeout(mymsg, mysecs, mybgcolor) {
    var myelement = document.createElement("div");
    var L_msg = window.innerWidth/2 - 100;
    var T_msg = window.innerHeight/2 - 15;
    myelement.setAttribute("style","background-color: " + mybgcolor + "; color: white; width: 200px; height: 30px; position: fixed; left: " + L_msg + "px;" +
                           "top: " + T_msg + "px; margin: auto; border: 1px solid #ffd700; font-family: verdana; font-size: 12px; display: flex;" +
                           "align-items: center; justify-content: center; text-align: center; opacity: 0.6; z-index: 99999;");
    myelement.innerHTML = mymsg;
    document.body.appendChild(myelement);
    setTimeout(function() {
      myelement.parentNode.removeChild(myelement);
    }, mysecs);
  }
})();

// ==UserScript==
// @name        Alternative search engines 2
// @description Adds search on other sites for google, bing, yandex, duckduckgo and ru-wiki
// @namespace   2k1dmg@userscript
// @license     GPL version 3 or any later version; http://www.gnu.org/licenses/gpl.html
// @version     0.2.5
// @grant       none
// @noframes
// @icon        data:image/png;base64,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
// @include     https://yandex.tld/*
// @include     https://www.google.tld/*
// @include     https://www.bing.com/*
// @include     https://duckduckgo.com/*
// @exclude     /^https://(yandex|www\.google)\.(net|org)/.*$/
// ==/UserScript==

// 2022-01-29

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=',
	Wikipedia: 'https://ru.wikipedia.org/w/index.php?search='
};

var PLACEHOLDER_SELECTORS = [
	'.content__left', // yandex
	'#result-stats', // google
	'.sb_count', // bing
	'.results--main' // duckduckgo
].join(',');

var INPUT_FIELD_SELECTORS = [
	'.input__control', // yandex
	'input.gLFyf', // 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: 0 10px 15px 10px;',
		'	color: rgb(204,204,234);',
		'	background-color: inherit;',
		'	font-family: Verdana;',
		'	font-size: 11px;',
		'	text-align: ' + POSITION + ';',
		'	z-index: 99999;',
		'}',
		'#' + LINK_BOX_ID + ' > a {',
		'	text-decoration: none;',
		'}'
	].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();

Content-Security-Policy: The page’s settings blocked an inline script (script-src-elem) from being executed because it violates the following directive: “script-src 'self' 'unsafe-inline' 'unsafe-eval' https://yandex.ru https://*.yandex.ru https://yastat.net https://yastatic.net https://*.yastatic.net https://yandex.net https://*.yandex.net https://ya.ru https://*.ya.ru 'nonce-...==' https://mc.yandex.com”
Source: javascript:void(0)

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

var PLACEHOLDER_SELECTORS = [
	'.main__center', // ya  .content__left не встречал нигде, даже в стилях
	'.main__center', // yandex.ru
	'#categories', // yandex.com
	'#center_col', // google
	'.sb_count', // bing
	'#react-duckbar' // duckduckgo  или .react-results--main как раньше
].join(',');
 
var INPUT_FIELD_SELECTORS = [
	'input.HeaderForm-Input', // ya
	'input.HeaderForm-Input', // yandex.ru
	'#q', // yandex.com
	'#APjFqb', // google
	'#sb_form_q', // bing
	'#search_form_input' // duckduckgo
].join(',');