Created
July 26, 2018 20:30
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Rich text editor with screen-reader-accessible tokens
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| <!doctype html> | |
| <style type="text/css"> | |
| #textbox-1{ | |
| padding: 4px 10px; | |
| } | |
| .token { | |
| background: #ccc; | |
| border: solid 1px #999; | |
| border-radius: 4px; | |
| } | |
| .token button:before { | |
| content: 'x'; | |
| } | |
| </style> | |
| <div id="textbox-1" role="textbox" contenteditable="true" style="border: solid 1px #000;"> | |
| <span class="token" role="group" aria-label="Todd Kloots" contenteditable="false"> | |
| Todd Kloots | |
| <button class="remove-token-btn" type="button" tabindex="-1" aria-label="Remove Todd Kloots" id="thing-1"></button> | |
| </span> | |
| <span class="token" role="group" aria-label="Lauren Bosak" contenteditable="false"> | |
| Lauren Bosak | |
| <button class="remove-token-btn" type="button" tabindex="-1" aria-label="Remove Lauren Bosak" id="thing-2"></button> | |
| </span> | |
| some text | |
| </div> | |
| <script type="text/javascript"> | |
| (function() { | |
| function getCaretPosition(element) { | |
| var range = window.getSelection().getRangeAt(0); | |
| var preCaretRange = range.cloneRange(); | |
| preCaretRange.selectNodeContents(element); | |
| preCaretRange.setEnd(range.endContainer, range.endOffset); | |
| return preCaretRange.toString().length; | |
| } | |
| var textEditor = document.getElementById('textbox-1'); | |
| textEditor.addEventListener('keyup', function(e) { | |
| var target = e.target; | |
| var cursorPos = getCaretPosition(target); | |
| var keyCode = e.keyCode; | |
| var cursorPosToId = { | |
| 0: 'thing-1', | |
| 24: 'thing-2', | |
| }; | |
| var leftOrRight = (keyCode == 37 || keyCode == 39); | |
| if (leftOrRight && target.getAttribute('aria-activedescendant')){ | |
| target.removeAttribute('aria-activedescendant'); | |
| } | |
| var id = leftOrRight && cursorPosToId[cursorPos]; | |
| if (id) { | |
| target.setAttribute('aria-activedescendant', id); | |
| return; | |
| } | |
| target.removeAttribute('aria-activedescendant'); | |
| }, false); | |
| textEditor.addEventListener('click', function(e) { | |
| var target = e.target; | |
| if (target.className === 'remove-token-btn') { | |
| e.currentTarget.removeChild(target.parentNode); | |
| } | |
| }); | |
| })(); | |
| </script> | |
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