Uses popover API for browsers that support it. Falls back to fixed positioning on browsers that do not.
fixes#2023fixes#5120
PiperOrigin-RevId: 580633646
fixes#4967
also fixes list-root focus ring and focusout
BREAKING CHANGE: the new ListController behavior no longer waits for event.preventDefault asynchronously because it was causing keyboard navigations to scroll the page.
PiperOrigin-RevId: 568300155
BREAKING CHANGE: Several enums in menu had their values changed from SCREAM_CASE to kebab-case to follow style guide. They are NAVIGABLE_KEYS -> NavigableKey, SELECTION_KEY -> SelectionKey, CLOSE_REASON -> CloseReason, KEYDOWN_CLOSE_KEY -> KeydownCloseKey
PiperOrigin-RevId: 567727434
This will enable forwards compatibility for `positioning="top-layer"` with popover.
BREAKING CHANGE: refactor `fixed` property to `positioning="fixed"` in Menu and `menuFixed` to `menuPositioning="fixed"`
PiperOrigin-RevId: 567723646
BREAKING CHANGE: This change refactors menu-item to no longer subclass or import from list-item. It also refactors it to use md-item directly which means that the API of menu item has moved from properties to slots. `start-*` and `end-*` slots are now just `start` and `end`, many tokens are now gone in favor of slotting. `headline` property is now a `slot="headline"` slot. Typeahead search text can now be set via `typeaheadText` which defaults to the slotted headline `textContent`. `select-option` now has the `displayText` which is used to display text in the `md-select` when the option is selected; defaults to the slotted headline `textContent`.
PiperOrigin-RevId: 567719483
BREAKING CHANGE: We have deleted `md-sub-menu-item`. Instead it is recommended to use `md-sub-menu` which can have `md-menu-item[slot=item]` and `md-menu[slot=menu]` slotted into it. This makes `sub-menu-item` accessible for screen readers using linear navigation
PiperOrigin-RevId: 567706398
BREAKING: for style guide enum consistency, we have renamed the corner values START_START etc. to be lowercase with dashes. e.g. start-start. The same has been done with MdMenu.defaultFocus' values.
PiperOrigin-RevId: 566454879
default focus is now FIRST_ITEM and instead of LIST_ROOT and the menu / list itself has tabindex -1 by default as our a11y model recommends
PiperOrigin-RevId: 565244488
BREAKING: `MdMenu.prototype.anchor` now only accepts a string which will querySelector the rootNode of the menu. The method now to anchor to an element reference is to set `MdMenu.prototype.anchorElement`. This matches the `popover` anchoring proposal more closely, but that proposal may not pass in favor of a CSS approach.
PiperOrigin-RevId: 560955779
BREAKING CHANGE: list-item-link and menu-item-link have been removed and their functionality has been added to menu-item and list-item respectively.
PiperOrigin-RevId: 553894393
Fixes issues running in ES5
BREAKING CHANGE: subclassing events is not supported in ES5 so all menu-related events now use CustomEvent rather than subclassing Event
PiperOrigin-RevId: 553304128
BREAKING_CHANGE: Renamed property `typeaheadBufferDelay` to `typeaheadDelay`, and attribute `list-tab-index` to `list-tabindex`.
PiperOrigin-RevId: 542685976
