fix(color-contrast): handle text that is outside overflow: hidden ancestor#4357
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fix(color-contrast): handle text that is outside overflow: hidden ancestor#4357
overflow: hidden ancestor#4357Conversation
WilcoFiers
previously approved these changes
Mar 7, 2024
| const node = fixture.querySelector('#target'); | ||
| const actual = getVisibleChildTextRects(node); | ||
| const rect = getClientRects(node)[0]; | ||
| const expected = new DOMRect(rect.left, rect.top, 25, rect.height); |
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As far as addressing the issue this makes sense. But this example is odd. This element has no visible text, yet axe is deciding it does.
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After thinking and looking into it, I don't believe this is the correct solution. color-contrast-matches uses a function to determine if an element has visible text children, if it doesn't it moves it to inapplicable. So text nodes that fully start outside an overflow hidden ancestor are ignored. I think text nodes that are causing this bug should also be ignored in that case.
straker
commented
Mar 12, 2024
| return clientRects.length ? clientRects : [nodeRect]; | ||
| return clientRects.length | ||
| ? clientRects | ||
| : filterHiddenRects([nodeRect], overflowHiddenNodes); |
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Decided to leave this in as a failsafe though it technically shouldn't be needed anymore
Co-authored-by: Wilco Fiers <WilcoFiers@users.noreply.github.com>
WilcoFiers
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Mar 12, 2024
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Mar 25, 2024
## [4.9.0](v4.8.4...v4.9.0) (2024-03-25) ### Features - adding the wcag131 tag to the aria-hidden-body rule ([#4349](#4349)) ([dd4c3c3](dd4c3c3)), closes [#4315](#4315) - **checks:** deprecate aria-busy check ([#4356](#4356)) ([be0b555](be0b555)), closes [#4347](#4347) [#4340](#4340) - **color:** add color channel values and luminosity, saturation, clip functions ([#4366](#4366)) ([9e70199](9e70199)), closes [/github.com//pull/4365/files#r1517706612](https://github.com/dequelabs//github.com/dequelabs/axe-core/pull/4365/files/issues/r1517706612) - **i18n:** add Greek Translations ([#3836](#3836)) ([3ea9a48](3ea9a48)) - **i18n:** Add Italian translation ([#4344](#4344)) ([de1baa9](de1baa9)) - **i18n:** Add Simplified Chinese translation ([#4379](#4379)) ([bda7c8d](bda7c8d)) - **i18n:** Add Taiwanese Mandarin translation ([#4299](#4299)) ([c5e11de](c5e11de)) ### Bug Fixes - Add LICENSE-3RD-PARTY.txt file ([#4304](#4304)) ([daa0fe6](daa0fe6)) - add Object.values polyfill for node <=6 ([#4274](#4274)) ([5eb867b](5eb867b)) - **aria-required-children:** avoid confusing aria-busy message in failures ([#4347](#4347)) ([591607d](591607d)), closes [#fail13](https://github.com/dequelabs/axe-core/issues/fail13) [#4340](#4340) - avoid reading element-specific node properties of non-element node types ([#4317](#4317)) ([b853b18](b853b18)), closes [#4316](#4316) [#4316](#4316) - **color-contrast:** handle text that is outside `overflow: hidden` ancestor ([#4357](#4357)) ([bdb7300](bdb7300)), closes [#4253](#4253) - **color-contrast:** support color blend modes hue, saturation, color, luminosity ([#4365](#4365)) ([7ae4761](7ae4761)) - **d.ts:** RawNodesResult issues ([#4229](#4229)) ([d660518](d660518)) - **d.ts:** RunOptions.reporter can be any string ([#4218](#4218)) ([e53f5c5](e53f5c5)) - **i18n:** update Italian translations ([#4377](#4377)) ([4d65d4b](4d65d4b)) - **listitem:** clarify roleNotValid message ([#4374](#4374)) ([0f8a9af](0f8a9af)) - **scrollable-region-focusable:** missing wcag213 tag ([#4201](#4201)) ([0080a72](0080a72)) - **target-size:** always pass 10x targets (avoid perf bottleneck) ([#4376](#4376)) ([be327c4](be327c4)) - **target-size:** do not crash for nodes with many overlapping widgets ([#4373](#4373)) ([1dbea83](1dbea83)), closes [#4359](#4359) [#4359](#4359) [#4360](#4360) - **utils/get-selector:** ignore 'xmlns' attribute when generating a selector ([#4303](#4303)) ([938b411](938b411)) This PR was opened by a robot 🤖 🎉
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Closes: #4253