URL Copy+Decode

Copies URLs to clipboard on right-click with ALT and decodes them to unicode

This script is marked as "external"
This script was commisioned by someone else, and I will not check if it works. If it breaks, contact me
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// ==UserScript==
// @name         URL Copy+Decode
// @namespace    13e1872288c63371627cc050da9f036cc523ef46
// @version      0.2
// @description  Copies URLs to clipboard on right-click with ALT and decodes them to unicode
// @author       /u/AyrA_ch
// @include      https://*
// @include      http://*
// @grant        none
// @external     true
// ==/UserScript==

//Changelog
// 0.2 - Added image handling
// 0.1 - Link handling

(function () {
	'use strict';

	var copyTextToClipboard = function (text) {
		var textArea = document.createElement("textarea");

		//
		// *** This styling is an extra step which is likely not required. ***
		//
		// Why is it here? To ensure:
		// 1. the element is able to have focus and selection.
		// 2. if element was to flash render it has minimal visual impact.
		// 3. less flakyness with selection and copying which **might** occur if
		//    the textarea element is not visible.
		//
		// The likelihood is the element won't even render, not even a flash,
		// so some of these are just precautions. However in IE the element
		// is visible whilst the popup box asking the user for permission for
		// the web page to copy to the clipboard.
		//

		// Place in top-left corner of screen regardless of scroll position.
		textArea.style.position = 'fixed';
		textArea.style.top = 0;
		textArea.style.left = 0;

		// Ensure it has a small width and height. Setting to 1px / 1em
		// doesn't work as this gives a negative w/h on some browsers.
		textArea.style.width = '2em';
		textArea.style.height = '2em';

		// We don't need padding, reducing the size if it does flash render.
		textArea.style.padding = 0;

		// Clean up any borders.
		textArea.style.border = 'none';
		textArea.style.outline = 'none';
		textArea.style.boxShadow = 'none';

		// Avoid flash of white box if rendered for any reason.
		textArea.style.background = 'transparent';

		textArea.value = text;

		document.body.appendChild(textArea);

		textArea.select();

		try {
			var successful = document.execCommand('copy');
			var msg = successful ? 'successful' : 'unsuccessful';
			console.log('Copying text command was ' + msg);
		} catch (err) {
			console.log('Oops, unable to copy');
		}

		document.body.removeChild(textArea);
	};

	var processLink = function (link) {
		if (link) {
			while (link != decodeURI(link)) {
				link = decodeURI(link);
			}
			copyTextToClipboard(link);
			alert("Copied " + link);
		}
	};

	Array.prototype.forEach.call(document.querySelectorAll("a"), function (v) {
		v.addEventListener("mousedown", function (e) {
			//Only operate on left click + alt
			if (e.button === 0 && e.altKey) {
				e.preventDefault();
				e.stopPropagation();
				var a = e.target;
				if (a.href) {
					processLink(a.href);
				}
			}
		});
	});

	Array.prototype.forEach.call(document.querySelectorAll("img"), function (v) {
		v.addEventListener("mousedown", function (e) {
			//Only operate on left click + alt
			if (e.button === 0 && e.altKey) {
				e.preventDefault();
				e.stopPropagation();
				var a = e.target;
				if (a.src) {
					processLink(a.src);
				}
			}
		});
	});
})();

/*
LICENSE:
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
The full license text can be found here: http://creativecommons.org/licenses/by-nc-sa/4.0/
The link has an easy to understand version of the license and the full license text.

DISCLAIMER:
THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
THE POSSIBILITY OF SUCH DAMAGE.
*/

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