Zach Arend

bug(mdc-chips): there is no correct way to implement aria button interaction pattern

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### Description With the mdc-based chips component there is no way to correctly implement chips that follow the aria button interaction pattern. For example, I would like to make a...

bug(datepicker): calendar popup overflows with WCAG text spacing enabled

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### Description When text spacing is enabled (WCAG 1.4.12) the popup for the calendar overflows a little bit. ### Reproduction Steps to reproduce: 1. Enable WCAG text spacing 2. open...

JAWS does not provide any way to read a disabled option in a listbox #14190

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### Summary 1. Navigate to https://output.jsbin.com/zijumor 2. (Demo opens and page says "Select a color. 'Blue' is deliberately disabled.") 3. Tab to the select element and press space 4. (select...

fix(material/core): add checkmark for single-select

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Add checkmark to mat-option for single-select. Fix a11y issues where selected state is visually communicated with color alone. Communicate selection with both color and a checkmark indicator. Affect components that...

In autocomplete-trigger.ts, add `| null` to the typing of optionally injected properties. This improves code health because the compiler can detect possible type errors with `null`.

fix(material/list): add radio toggles

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[fix(material/list): add radio toggles](https://github.com/angular/components/pull/25933/commits/884e6b5ded0e3e7c44bd16f4c138fc31b366304c) Add radio toggles for single selection. Fix a11y issue where selected state is visually communicated with color alone. Rename `checkboxPosition` Input to `togglePosition` and deprecate `checkboxPosition`....

Add support for aria-description on mat-chip, mat-chip-option and mat-chip-row. mat-chip-option and mat-chip-row put aria-desciprtion on the same element that already has the aria-label. aria-description is needed for when developers need...

### Feature Description For mat-option, add API to configure the position of pseudo-checkbox. Suggesting having it be either 'before' or 'after'. This aligns with other components like MDC List. Currently,...

fix(material/tree): add levelAccessor, childrenAccessor, TreeKeyManag… …er; a11y and docs improvements

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Update multiple facets of Tree component. Add APIs to manage data models, improve existing behaviors, add keyboard functionality and update documentation. Add APIs options to the Tree data model by...