Not every item that may be rendered by a ScrollView will forward 'style', so cloning the item element is not safe. Instead, we can wrap the item in a 'View' and apply the styles for the sticky header to this element.
Close#1175
Inserting and deleting the CSS ':focus' rule triggers styles recalculation for the
entire DOM tree which results in performance degradation on focus and makes the
keyboard very slow to open in Safari iOS.
This commit fixes the issue by picking up the upstream changes to the W3C
focus-visible polyfill. A class name is applied to elements when they receive
focus via keyboard. The related CSS rule is inserted only once into the style
sheet. This performs much better since the browser needs to recalculate styles
only for the focused element and its small subtree.
Fix#1155Close#1169
Ensure that programmatic focus can be moved to any element. Each
instance of a primitive component type (e.g., `View`, `Text`, etc.)
includes a `focus` method. However, on the web only certain elements can
receive programmatic focus by default: those that can also receive
keyboard focus, e.g., `a`, `button`, `input`, etc. All other element
types must set `tabIndex="-1"` in order to be programmatically focusable
without also being focusable via keyboard or mouse.
Fix#1099
Calculating the `location{X,Y}` values for events requires a call to
`getBoundingClientRect`. To prevent unnecessary performance costs, these values
are implemented as getters and will only make the DOM API call when accessed in
application code.
Close#1157
Use of 'pan-x' and 'pan-y' on ScrollView prevents the browser handling
scrolling of a parent ScrollView that is scrollable along the other axis.
Fix#1160Close#1161
Maps the View and Text prop 'nativeID' to DOM 'id' as these are
equivalent. Enables declarative use of various 'aria-*' properties that
require ID references.
Ref #1116Close#1130
The way that sticky headers work on web requires the ScrollView to apply
'position:sticky' to a clone of the element. This wasn't working for
VirtualizedList because the style prop was not passed to the default
CellRendererComponent implementation.
Fix#1066Close#1122
Only observe nodes when the 'onLayout' prop is specified on the
element. Fixes performance regression for browsers that rely on
MutationObserver-based shim for ResizeObserver.
Fix#1128Close#1129
If the work related to a touch/press event takes a long enough time
(i.e., CPU intensive, old device, etc.) the browser may produce emulated
mouse events >500ms after the original touch event. This causes the
related Responder events to fire twice. To avoid that happening, this
patch increases the filter threshold used by the ResponderEventPlugin
from 200ms to 1000ms.
Fix#1078
React DOM 16.5 changed unstable APIs that this project depends upon.
This regression was fixed in React DOM 16.5.1 but requires React Native
for Web to migrate to a different unstable API exported by React DOM.
Fix#1096Close#1106
The 'menuitem' ARIA role should support Enter/Space keyboard interaction
as if it were a button. This is required because the ARIA spec makes it
so that the ARIA properties of 'menuitem' children are ignored, i.e.,
you can't just wrap a button in a 'menuitem' and expect Assistive
Technologies to surface the button to users.
Fix#1068Close#1069
krister