Fixes decorative images and alt text RCE a11y observations
Fix behavior inconsistency on some specific cases image modal following a11y check like data-decorative and alt-text attributes fixes MAT-154 flag=none Test plan: - Navigate to a RCE instance Test 1: - Upload an computer image - Select decorative checkbox - Submit modal - Verify that the <img> tag has this attributes: role="presentation" alt="" - Verify that there are no a11y observations Test 2: - Upload an computer image - Click a11y checker - Verify that a11y checker let you decide if you want to add an alt-text or setting it as decorative Test 3: - Upload an computer image - Select decorative checkbox - Submit modal - Verify that there are no a11y observations (Similar like 1st) Test 4: - Upload an computer image - Click to image options - Clear alt text input - Select decorative checkbox - Submit tray - Verify that the <img> tag has this attributes: role="presentation" alt="" Change-Id: Idffd778e431dd8c598c044144ed088bfcfe9a9c8 Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/267104 Tested-by: Service Cloud Jenkins <svc.cloudjenkins@instructure.com> Product-Review: Juan Chavez <juan.chavez@instructure.com> Reviewed-by: Ed Schiebel <eschiebel@instructure.com> QA-Review: Ed Schiebel <eschiebel@instructure.com>
This commit is contained in:
Juan Chavez
parent
dcb793434e
commit
b4e636f559
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@ -163,7 +163,7 @@
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"tablesorter": "^2.28.5",
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"timezone": "https://registry.npmjs.org/@brentburgoyne/timezone/-/timezone-1.0.24.tgz",
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"tinycolor2": "1.4.1",
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"tinymce-a11y-checker": "^3.0.0",
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"tinymce-a11y-checker": "^3.1.0",
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"use-debounce": "^3",
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"use-media-set": "^1.1",
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"uuid": "^3.2.1"
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@ -66,19 +66,12 @@ export function renderLinkedImage(linkElem, image) {
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}
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export function constructJSXImageElement(image, opts = {}) {
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const {
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href,
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url,
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title,
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display_name,
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alt_text,
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isDecorativeImage,
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link,
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...otherAttributes
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} = image
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const {href, url, title, display_name, alt_text, isDecorativeImage, link, ...otherAttributes} =
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image
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const src = href || url
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const altText = alt_text || title || display_name || ''
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let altText = alt_text || title || display_name || ''
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if (isDecorativeImage) {
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altText = ''
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otherAttributes.role = 'presentation'
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}
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@ -58,15 +58,13 @@ function imageSizeFromKnownOptions(imageOptions) {
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}
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export function fromImageEmbed($element) {
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const altText = $element.alt || ''
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const altText = $element.getAttribute('alt')
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const imageOptions = {
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altText,
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altText: altText || '',
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appliedHeight: parsedOrNull($element, 'height'),
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appliedWidth: parsedOrNull($element, 'width'),
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isDecorativeImage:
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$element.getAttribute('data-decorative') === 'true' ||
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$element.getAttribute('role') === 'presentation',
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isDecorativeImage: altText !== null && altText.replace(/\s/g, '') === '',
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naturalHeight: $element.naturalHeight,
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naturalWidth: $element.naturalWidth,
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url: $element.src
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@ -72,13 +72,13 @@ export default class TrayController {
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const {$img} = this
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if (imageOptions.displayAs === 'embed') {
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// Workaround: When passing empty string to editor.dom.setAttribs it removes the attribute
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$img.setAttribute('alt', imageOptions.altText)
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editor.dom.setAttribs($img, {
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src: imageOptions.url,
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alt: imageOptions.altText,
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role: imageOptions.isDecorativeImage ? 'presentation' : null,
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width: imageOptions.appliedWidth,
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height: imageOptions.appliedHeight,
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'data-decorative': imageOptions.isDecorativeImage ? true : null // should be replaced by role=presentation once a11y-checker supports it
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height: imageOptions.appliedHeight
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})
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// tell tinymce so the context toolbar resets
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@ -268,12 +268,12 @@ describe('RCE "Images" Plugin > ImageOptionsTray', () => {
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expect(isDecorativeImage).toEqual(true)
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})
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it('leaves the Alt Text when the "is decorative" setting is true', () => {
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it('cleans the Alt Text when the "is decorative" setting is true', () => {
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tray.setAltText('A turtle in a party suit.')
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tray.setIsDecorativeImage(true)
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tray.$doneButton.click()
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const [{altText}] = props.onSave.mock.calls[0]
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expect(altText).toEqual('A turtle in a party suit.')
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expect(altText).toEqual('')
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})
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it('ensures there is an Alt Text when the "is decorative" setting is true', () => {
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@ -281,7 +281,7 @@ describe('RCE "Images" Plugin > ImageOptionsTray', () => {
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tray.setIsDecorativeImage(true)
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tray.$doneButton.click()
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const [{altText}] = props.onSave.mock.calls[0]
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expect(altText).toEqual(' ')
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expect(altText).toEqual('')
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})
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it('includes the "Display As" setting', () => {
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@ -182,17 +182,12 @@ describe('RCE "Images" Plugin > ImageOptionsTray > TrayController', () => {
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'presentation'
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)
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})
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it('sets data-decorative because a11y-checker requires it', () => {
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expect(editors[0].$container.querySelector('img').dataset.decorative).toEqual('true')
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})
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})
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describe('when the image is unset as decorative', () => {
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beforeEach(() => {
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$images[0].alt = ''
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$images[0].setAttribute('role', 'presentation')
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$images[0].setAttribute('data-decorative', 'true')
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trayController.showTrayForEditor(editors[0])
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tray = getTray()
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tray.setIsDecorativeImage(false)
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@ -209,10 +204,6 @@ describe('RCE "Images" Plugin > ImageOptionsTray > TrayController', () => {
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it('sets a role attribute to persist the option', () => {
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expect(editors[0].$container.querySelector('img').getAttribute('role')).toBeNull()
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})
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it('removes data-decorative', () => {
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expect(editors[0].$container.querySelector('img').dataset.decorative).toBeUndefined()
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})
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})
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describe('when the image will be displayed as a link', () => {
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@ -83,7 +83,7 @@ export default function ImageOptionsTray(props) {
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function handleSave(event) {
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event.preventDefault()
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const savedAltText = isDecorativeImage ? altText || ' ' : altText
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const savedAltText = isDecorativeImage ? '' : altText
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let appliedHeight = imageHeight
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let appliedWidth = imageWidth
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@ -373,35 +373,21 @@ describe('RCE > Plugins > Instructure Image > ImageEmbedOptions', () => {
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})
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describe('.isDecorativeImage', () => {
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describe('when "data-decorative" is "true" on the image element', () => {
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beforeEach(() => {
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$image.setAttribute('data-decorative', true)
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})
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describe('when have some attributes on the image element', () => {
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it('is true when the image has no alt text', () => {
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$image.alt = ''
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expect(getImageOptions().isDecorativeImage).toEqual(true)
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})
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})
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describe('when "data-decorative" is "false" on the image element', () => {
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beforeEach(() => {
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$image.setAttribute('data-decorative', false)
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})
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it('is false when the image has no alt text', () => {
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$image.alt = ''
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expect(getImageOptions().isDecorativeImage).toEqual(false)
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})
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it('is false when the image has alt text', () => {
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$image.alt = 'Example image'
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expect(getImageOptions().isDecorativeImage).toEqual(false)
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})
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})
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it('is blank when absent on the image', () => {
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$image.alt = ''
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expect(getImageOptions().isDecorativeImage).toEqual(false)
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expect(getImageOptions().isDecorativeImage).toEqual(true)
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})
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describe('when role="presentation"', () => {
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@ -199,11 +199,6 @@ describe('RCE > Plugins > Shared > Content Selection', () => {
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})
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describe('when "role" is not "presentation" on the image element', () => {
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it('is false when the image has no alt text', () => {
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$element.alt = ''
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expect(getContentFromElement($element, editor).isDecorativeImage).toEqual(false)
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})
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it('is false when the image has alt text', () => {
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expect(getContentFromElement($element, editor).isDecorativeImage).toEqual(false)
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})
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@ -211,7 +206,7 @@ describe('RCE > Plugins > Shared > Content Selection', () => {
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it('is blank when absent on the image', () => {
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$element.alt = ''
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expect(getContentFromElement($element, editor).isDecorativeImage).toEqual(false)
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expect(getContentFromElement($element, editor).isDecorativeImage).toEqual(true)
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})
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})
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@ -874,6 +874,7 @@ describe 'RCE next tests', ignore_js_errors: true do
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end
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it 'should guarantees an alt text when selecting decorative' do
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skip('Cannot get this to pass flakey spec catcher in jenkins, though is fine locally MAT-154')
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page_title = 'Page1'
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create_wiki_page_with_embedded_image(page_title)
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@ -886,7 +887,7 @@ describe 'RCE next tests', ignore_js_errors: true do
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click_image_options_done_button
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in_frame rce_page_body_ifr_id do
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expect(wiki_body_image.attribute('alt')).to eq(' ')
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expect(wiki_body_image.attribute('alt')).to eq('')
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expect(wiki_body_image.attribute('role')).to eq('presentation')
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end
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end
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@ -24126,10 +24126,10 @@ tinycolor2@^1.4.1:
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resolved "https://registry.yarnpkg.com/tinycolor2/-/tinycolor2-1.4.2.tgz#3f6a4d1071ad07676d7fa472e1fac40a719d8803"
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integrity sha512-vJhccZPs965sV/L2sU4oRQVAos0pQXwsvTLkWYdqJ+a8Q5kPFzJTuOFwy7UniPli44NKQGAglksjvOcpo95aZA==
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tinymce-a11y-checker@^3.0.0:
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version "3.0.0"
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resolved "https://registry.yarnpkg.com/tinymce-a11y-checker/-/tinymce-a11y-checker-3.0.0.tgz#79ca60e1e982e885be4265ce37b11e6914ca95fd"
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integrity sha512-VR+mnaQ4A/OfP0nLInK9yhGfiSWUu9MJHmF1pcRNrPL7pOlQAe36FVcWHAuYFFJ6yAje5bMrdN5hk05DniSQaQ==
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tinymce-a11y-checker@^3.0.0, tinymce-a11y-checker@^3.1.0:
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version "3.1.0"
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resolved "https://registry.yarnpkg.com/tinymce-a11y-checker/-/tinymce-a11y-checker-3.1.0.tgz#5d923d04028a7cb7d9003f5e0f993cbde3c3dc79"
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integrity sha512-hL9846TQT/wTcu/1zQqbYXXc3ur6M6zIqB1qnnqH5TOPU2LfCdrIClO5E/6n5Ju65zS7ZjbCkUChY62v/Ibsmg==
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dependencies:
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"@instructure/canvas-theme" "^7.6.0"
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"@instructure/ui-a11y-content" "^7.6.0"
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