Kristiyan Kostadinov 4a1c8ed5f9 feat(live-announcer): add ability to clear live element (#11996)
Currently when we announce a message, we leave the element in place, however this can cause the element to be read out again when the user continues navigating using the arrow keys. These changes add an API where the consumer can clear the element manually or after a duration. Doing this automatically is tricky, because we'd have to make a lot of assumptions that might not be correct in all cases or may break some screen readers. These are some alternatives that were considered:

* Removing the element from the a11y tree via `aria-hidden` after the screen reader has started announcing it. This works, but because of the politeness, we can't know exactly when the screen reader will announce the text, which could end up hiding it too early.
* Clearing the element on the next `keydown`/`click`/`focus`. This could be flaky and might end up interrupting the screen reader when it doesn't have to (e.g. clicking on a non-focusable element).
* Moving the element to a different place in the DOM (e.g. prepending it to the `body` instead of appending). This works, but we'd have to keep moving the element based on the focus direction.

Fixes #11991.
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Material Design for Angular

npm version Build Status Gitter

This is the home for the Angular team's Material Design components built for and with Angular.

Documentation, demos, and guides | Google group | Contributing | Plunker Template | StackBlitz Template

Getting started

See our Getting Started Guide if you're building your first project with Angular Material.

Check out our directory of design documents for more insight into our process.

If you'd like to contribute, you must follow our contributing guidelines. You can look through the issues (which should be up-to-date on who is working on which features and which pieces are blocked) and make a comment. Also see our help wanted label.

High level stuff planned for Q4 2018 (October - Dec):

  • Improve our own build and automation tooling
  • Fix bugs and reduce some technical debt inside Google
  • Working on long-term plans on how to collaborate with the MDC Web team
  • Designs for advanced table improvements (column resize, selection directives, inline-edit)

Available features

Feature Notes Docs
autocomplete Docs
badge Docs
bottom-sheet Docs
button Docs
button-toggle Docs
cards Docs
checkbox Docs
chips Docs
data-table Docs
datepicker Docs
dialog Docs
divider Docs
drag-drop Landing in v7
expansion-panel Docs
grid-list Docs
icon Docs
input Docs
list Docs
menu Docs
paginator Docs
progress-bar Docs
progress-spinner Docs
radio Docs
ripples Docs
select Docs
sidenav Docs
slide-toggle Docs
slider Docs
snackbar / toast Docs
sort-header Docs
stepper Docs
tabs Docs
textarea Docs
toolbar Docs
tooltip Docs
tree Docs
virtual-scroll Landing in v7
---------------- ------------------------------------------------------ ------------
theming Guide
typography Guide
layout See angular/flex-layout Wiki
cdk Docs

In progress, planned, and non-planned features

Feature Status Docs Issue
fab speed-dial Not started, not planned - #860
fab toolbar Not started, not planned - -
bottom-nav Not started, not planned - #408

The goal of Angular Material

Our goal is to build a set of high-quality UI components built with Angular and TypeScript, following the Material Design spec. These components will serve as an example of how to write Angular code following best practices.

What do we mean by "high-quality"?

  • Internationalized and accessible so that all users can use them.
  • Straightforward APIs that don't confuse developers.
  • Behave as expected across a wide variety of use-cases without bugs.
  • Behavior is well-tested with both unit and integration tests.
  • Customizable within the bounds of the Material Design specification.
  • Performance cost is minimized.
  • Code is clean and well-documented to serve as an example for Angular devs.

Browser and screen reader support

Angular Material supports the most recent two versions of all major browsers: Chrome (including Android), Firefox, Safari (including iOS), and IE11 / Edge

We also aim for great user experience with the following screen readers:

  • NVDA and JAWS with IE / FF / Chrome (on Windows).
  • VoiceOver with Safari on iOS and Safari / Chrome on OSX.
  • TalkBack with Chrome on Android.
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