Damyon Wiese
26f8822d5c
1/ Set the aria-labelledby attribute on the contenteditable div (find the label from original textarea) 2/ Store/restore the selection for the contenteditable div when it is focused. This allows you to select some text, then go to the toolbar and click a button, and the selection will be restored before the button effect is applied. 3/ Add an accessibility helper plugin. From testing in all screenreaders, I found that all of their support for contenteditable is not great. They treat it like a textbox - which means you can type and edit text, but it tells you nothing about the styles, links or images in the editor. So I added a button to the toolbar, that is only accessible when navigating via keyboard, that opens an accesssibility helper dialogue. The dialogue shows the list of current styles, a global list of all links, and a global list of all images. Choosing an image or link from here, will focus on the editable region, and select the link/image. 4/ Add an accessibility checker plugin to Atto. Checks for images with no alt, images and links with filenames as alternate text/link text, and contrast ratios less than WCAG 2.0 AA.
45 lines
1.5 KiB
PHP
45 lines
1.5 KiB
PHP
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Atto text editor integration version file.
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*
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* @package atto_accessibilityhelper
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* @copyright 2014 Damyon Wiese <damyon@moodle.com>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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defined('MOODLE_INTERNAL') || die();
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/**
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* Initialise this plugin
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* @param string $elementid
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*/
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function atto_accessibilityhelper_strings_for_js() {
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global $PAGE;
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$PAGE->requires->strings_for_js(array('liststyles',
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'nostyles',
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'listlinks',
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'nolinks',
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'selectlink',
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'listimages',
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'noimages',
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'selectimage'),
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'atto_accessibilityhelper');
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}
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