Files
react-native/React/Views/RCTViewManager.m
T
Sharon Gong 14b4668947 Extended Accessibility Actions Support (#24695)
Summary:
This is a reconstitution of #24190. It extends accessibility actions to include both a name and user facing label. These extensions support both standard and custom actions.

We've also added actions support on Android, and added examples to RNTester showing how both standard and custom accessibility actions are used.

## Changelog

[general] [changed] - Enhanced accessibility actions support
Pull Request resolved: https://github.com/facebook/react-native/pull/24695

Differential Revision: D15391408

Pulled By: cpojer

fbshipit-source-id: 5ed48004d46d9887da53baea7fdcd0e7e15c5739
2019-05-20 01:32:53 -07:00

396 lines
16 KiB
Objective-C

/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#import "RCTViewManager.h"
#import "RCTBorderStyle.h"
#import "RCTBridge.h"
#import "RCTConvert.h"
#import "RCTEventDispatcher.h"
#import "RCTLog.h"
#import "RCTShadowView.h"
#import "RCTUIManager.h"
#import "RCTUIManagerUtils.h"
#import "RCTUtils.h"
#import "RCTView.h"
#import "UIView+React.h"
#import "RCTConvert+Transform.h"
#if TARGET_OS_TV
#import "RCTTVView.h"
#endif
@implementation RCTConvert(UIAccessibilityTraits)
RCT_MULTI_ENUM_CONVERTER(UIAccessibilityTraits, (@{
@"none": @(UIAccessibilityTraitNone),
@"button": @(UIAccessibilityTraitButton),
@"link": @(UIAccessibilityTraitLink),
@"header": @(UIAccessibilityTraitHeader),
@"search": @(UIAccessibilityTraitSearchField),
@"image": @(UIAccessibilityTraitImage),
@"imagebutton": @(UIAccessibilityTraitImage | UIAccessibilityTraitButton),
@"selected": @(UIAccessibilityTraitSelected),
@"plays": @(UIAccessibilityTraitPlaysSound),
@"key": @(UIAccessibilityTraitKeyboardKey),
@"keyboardkey": @(UIAccessibilityTraitKeyboardKey),
@"text": @(UIAccessibilityTraitStaticText),
@"summary": @(UIAccessibilityTraitSummaryElement),
@"disabled": @(UIAccessibilityTraitNotEnabled),
@"frequentUpdates": @(UIAccessibilityTraitUpdatesFrequently),
@"startsMedia": @(UIAccessibilityTraitStartsMediaSession),
@"adjustable": @(UIAccessibilityTraitAdjustable),
@"allowsDirectInteraction": @(UIAccessibilityTraitAllowsDirectInteraction),
@"pageTurn": @(UIAccessibilityTraitCausesPageTurn),
@"alert": @(UIAccessibilityTraitNone),
@"checkbox": @(UIAccessibilityTraitNone),
@"combobox": @(UIAccessibilityTraitNone),
@"menu": @(UIAccessibilityTraitNone),
@"menubar": @(UIAccessibilityTraitNone),
@"menuitem": @(UIAccessibilityTraitNone),
@"progressbar": @(UIAccessibilityTraitNone),
@"radio": @(UIAccessibilityTraitNone),
@"radiogroup": @(UIAccessibilityTraitNone),
@"scrollbar": @(UIAccessibilityTraitNone),
@"spinbutton": @(UIAccessibilityTraitNone),
@"switch": @(SwitchAccessibilityTrait),
@"tab": @(UIAccessibilityTraitNone),
@"tablist": @(UIAccessibilityTraitNone),
@"timer": @(UIAccessibilityTraitNone),
@"toolbar": @(UIAccessibilityTraitNone),
}), UIAccessibilityTraitNone, unsignedLongLongValue)
@end
@implementation RCTViewManager
@synthesize bridge = _bridge;
RCT_EXPORT_MODULE()
- (dispatch_queue_t)methodQueue
{
return RCTGetUIManagerQueue();
}
- (UIView *)view
{
#if TARGET_OS_TV
return [RCTTVView new];
#else
return [RCTView new];
#endif
}
- (RCTShadowView *)shadowView
{
return [RCTShadowView new];
}
- (NSArray<NSString *> *)customBubblingEventTypes
{
return @[
// Generic events
@"press",
@"change",
@"focus",
@"blur",
@"submitEditing",
@"endEditing",
@"keyPress",
// Touch events
@"touchStart",
@"touchMove",
@"touchCancel",
@"touchEnd",
];
}
#pragma mark - View properties
#if TARGET_OS_TV
// Apple TV properties
RCT_EXPORT_VIEW_PROPERTY(isTVSelectable, BOOL)
RCT_EXPORT_VIEW_PROPERTY(hasTVPreferredFocus, BOOL)
RCT_EXPORT_VIEW_PROPERTY(tvParallaxProperties, NSDictionary)
#endif
// Acessibility related properties
RCT_REMAP_VIEW_PROPERTY(accessible, reactAccessibilityElement.isAccessibilityElement, BOOL)
RCT_REMAP_VIEW_PROPERTY(accessibilityActions, reactAccessibilityElement.accessibilityActions, NSDictionaryArray)
RCT_REMAP_VIEW_PROPERTY(accessibilityLabel, reactAccessibilityElement.accessibilityLabel, NSString)
RCT_REMAP_VIEW_PROPERTY(accessibilityHint, reactAccessibilityElement.accessibilityHint, NSString)
RCT_REMAP_VIEW_PROPERTY(accessibilityViewIsModal, reactAccessibilityElement.accessibilityViewIsModal, BOOL)
RCT_REMAP_VIEW_PROPERTY(accessibilityElementsHidden, reactAccessibilityElement.accessibilityElementsHidden, BOOL)
RCT_REMAP_VIEW_PROPERTY(accessibilityIgnoresInvertColors, reactAccessibilityElement.shouldAccessibilityIgnoresInvertColors, BOOL)
RCT_REMAP_VIEW_PROPERTY(onAccessibilityAction, reactAccessibilityElement.onAccessibilityAction, RCTDirectEventBlock)
RCT_REMAP_VIEW_PROPERTY(onAccessibilityTap, reactAccessibilityElement.onAccessibilityTap, RCTDirectEventBlock)
RCT_REMAP_VIEW_PROPERTY(onMagicTap, reactAccessibilityElement.onMagicTap, RCTDirectEventBlock)
RCT_REMAP_VIEW_PROPERTY(onAccessibilityEscape, reactAccessibilityElement.onAccessibilityEscape, RCTDirectEventBlock)
RCT_REMAP_VIEW_PROPERTY(testID, reactAccessibilityElement.accessibilityIdentifier, NSString)
RCT_EXPORT_VIEW_PROPERTY(backgroundColor, UIColor)
RCT_REMAP_VIEW_PROPERTY(backfaceVisibility, layer.doubleSided, css_backface_visibility_t)
RCT_REMAP_VIEW_PROPERTY(opacity, alpha, CGFloat)
RCT_REMAP_VIEW_PROPERTY(shadowColor, layer.shadowColor, CGColor)
RCT_REMAP_VIEW_PROPERTY(shadowOffset, layer.shadowOffset, CGSize)
RCT_REMAP_VIEW_PROPERTY(shadowOpacity, layer.shadowOpacity, float)
RCT_REMAP_VIEW_PROPERTY(shadowRadius, layer.shadowRadius, CGFloat)
RCT_REMAP_VIEW_PROPERTY(needsOffscreenAlphaCompositing, layer.allowsGroupOpacity, BOOL)
RCT_CUSTOM_VIEW_PROPERTY(overflow, YGOverflow, RCTView)
{
if (json) {
view.clipsToBounds = [RCTConvert YGOverflow:json] != YGOverflowVisible;
} else {
view.clipsToBounds = defaultView.clipsToBounds;
}
}
RCT_CUSTOM_VIEW_PROPERTY(shouldRasterizeIOS, BOOL, RCTView)
{
view.layer.shouldRasterize = json ? [RCTConvert BOOL:json] : defaultView.layer.shouldRasterize;
view.layer.rasterizationScale = view.layer.shouldRasterize ? [UIScreen mainScreen].scale : defaultView.layer.rasterizationScale;
}
RCT_CUSTOM_VIEW_PROPERTY(transform, CATransform3D, RCTView)
{
view.layer.transform = json ? [RCTConvert CATransform3D:json] : defaultView.layer.transform;
// Enable edge antialiasing in perspective transforms
view.layer.allowsEdgeAntialiasing = !(view.layer.transform.m34 == 0.0f);
}
RCT_CUSTOM_VIEW_PROPERTY(accessibilityRole, UIAccessibilityTraits, RCTView)
{
const UIAccessibilityTraits AccessibilityRolesMask = UIAccessibilityTraitNone | UIAccessibilityTraitButton | UIAccessibilityTraitLink | UIAccessibilityTraitSearchField | UIAccessibilityTraitImage | UIAccessibilityTraitKeyboardKey | UIAccessibilityTraitStaticText | UIAccessibilityTraitAdjustable | UIAccessibilityTraitHeader | UIAccessibilityTraitSummaryElement | SwitchAccessibilityTrait;
view.reactAccessibilityElement.accessibilityTraits = view.reactAccessibilityElement.accessibilityTraits & ~AccessibilityRolesMask;
UIAccessibilityTraits newTraits = json ? [RCTConvert UIAccessibilityTraits:json] : defaultView.accessibilityTraits;
if (newTraits != UIAccessibilityTraitNone) {
UIAccessibilityTraits maskedTraits = newTraits & AccessibilityRolesMask;
view.reactAccessibilityElement.accessibilityTraits |= maskedTraits;
} else {
NSString *role = json ? [RCTConvert NSString:json] : @"";
view.reactAccessibilityElement.accessibilityRole = role;
}
}
RCT_CUSTOM_VIEW_PROPERTY(accessibilityStates, NSArray<NSString *>, RCTView)
{
NSArray<NSString *> *states = json ? [RCTConvert NSStringArray:json] : nil;
NSMutableArray *newStates = [NSMutableArray new];
if (!states) {
return;
}
const UIAccessibilityTraits AccessibilityStatesMask = UIAccessibilityTraitNotEnabled | UIAccessibilityTraitSelected;
view.reactAccessibilityElement.accessibilityTraits = view.reactAccessibilityElement.accessibilityTraits & ~AccessibilityStatesMask;
for (NSString *state in states) {
if ([state isEqualToString:@"selected"]) {
view.reactAccessibilityElement.accessibilityTraits |= UIAccessibilityTraitSelected;
} else if ([state isEqualToString:@"disabled"]) {
view.reactAccessibilityElement.accessibilityTraits |= UIAccessibilityTraitNotEnabled;
} else {
[newStates addObject:state];
}
}
if (newStates.count > 0) {
view.reactAccessibilityElement.accessibilityStates = newStates;
} else {
view.reactAccessibilityElement.accessibilityStates = nil;
}
}
RCT_CUSTOM_VIEW_PROPERTY(nativeID, NSString *, RCTView)
{
view.nativeID = json ? [RCTConvert NSString:json] : defaultView.nativeID;
[_bridge.uiManager setNativeID:view.nativeID forView:view];
}
RCT_CUSTOM_VIEW_PROPERTY(pointerEvents, RCTPointerEvents, RCTView)
{
if ([view respondsToSelector:@selector(setPointerEvents:)]) {
view.pointerEvents = json ? [RCTConvert RCTPointerEvents:json] : defaultView.pointerEvents;
return;
}
if (!json) {
view.userInteractionEnabled = defaultView.userInteractionEnabled;
return;
}
switch ([RCTConvert RCTPointerEvents:json]) {
case RCTPointerEventsUnspecified:
// Pointer events "unspecified" acts as if a stylesheet had not specified,
// which is different than "auto" in CSS (which cannot and will not be
// supported in `React`. "auto" may override a parent's "none".
// Unspecified values do not.
// This wouldn't override a container view's `userInteractionEnabled = NO`
view.userInteractionEnabled = YES;
case RCTPointerEventsNone:
view.userInteractionEnabled = NO;
break;
default:
RCTLogError(@"UIView base class does not support pointerEvent value: %@", json);
}
}
RCT_CUSTOM_VIEW_PROPERTY(removeClippedSubviews, BOOL, RCTView)
{
if ([view respondsToSelector:@selector(setRemoveClippedSubviews:)]) {
view.removeClippedSubviews = json ? [RCTConvert BOOL:json] : defaultView.removeClippedSubviews;
}
}
RCT_CUSTOM_VIEW_PROPERTY(borderRadius, CGFloat, RCTView) {
if ([view respondsToSelector:@selector(setBorderRadius:)]) {
view.borderRadius = json ? [RCTConvert CGFloat:json] : defaultView.borderRadius;
} else {
view.layer.cornerRadius = json ? [RCTConvert CGFloat:json] : defaultView.layer.cornerRadius;
}
}
RCT_CUSTOM_VIEW_PROPERTY(borderColor, CGColor, RCTView)
{
if ([view respondsToSelector:@selector(setBorderColor:)]) {
view.borderColor = json ? [RCTConvert CGColor:json] : defaultView.borderColor;
} else {
view.layer.borderColor = json ? [RCTConvert CGColor:json] : defaultView.layer.borderColor;
}
}
RCT_CUSTOM_VIEW_PROPERTY(borderWidth, float, RCTView)
{
if ([view respondsToSelector:@selector(setBorderWidth:)]) {
view.borderWidth = json ? [RCTConvert CGFloat:json] : defaultView.borderWidth;
} else {
view.layer.borderWidth = json ? [RCTConvert CGFloat:json] : defaultView.layer.borderWidth;
}
}
RCT_CUSTOM_VIEW_PROPERTY(borderStyle, RCTBorderStyle, RCTView)
{
if ([view respondsToSelector:@selector(setBorderStyle:)]) {
view.borderStyle = json ? [RCTConvert RCTBorderStyle:json] : defaultView.borderStyle;
}
}
RCT_CUSTOM_VIEW_PROPERTY(hitSlop, UIEdgeInsets, RCTView)
{
if ([view respondsToSelector:@selector(setHitTestEdgeInsets:)]) {
if (json) {
UIEdgeInsets hitSlopInsets = [RCTConvert UIEdgeInsets:json];
view.hitTestEdgeInsets = UIEdgeInsetsMake(-hitSlopInsets.top, -hitSlopInsets.left, -hitSlopInsets.bottom, -hitSlopInsets.right);
} else {
view.hitTestEdgeInsets = defaultView.hitTestEdgeInsets;
}
}
}
#define RCT_VIEW_BORDER_PROPERTY(SIDE) \
RCT_CUSTOM_VIEW_PROPERTY(border##SIDE##Width, float, RCTView) \
{ \
if ([view respondsToSelector:@selector(setBorder##SIDE##Width:)]) { \
view.border##SIDE##Width = json ? [RCTConvert CGFloat:json] : defaultView.border##SIDE##Width; \
} \
} \
RCT_CUSTOM_VIEW_PROPERTY(border##SIDE##Color, UIColor, RCTView) \
{ \
if ([view respondsToSelector:@selector(setBorder##SIDE##Color:)]) { \
view.border##SIDE##Color = json ? [RCTConvert CGColor:json] : defaultView.border##SIDE##Color; \
} \
}
RCT_VIEW_BORDER_PROPERTY(Top)
RCT_VIEW_BORDER_PROPERTY(Right)
RCT_VIEW_BORDER_PROPERTY(Bottom)
RCT_VIEW_BORDER_PROPERTY(Left)
RCT_VIEW_BORDER_PROPERTY(Start)
RCT_VIEW_BORDER_PROPERTY(End)
#define RCT_VIEW_BORDER_RADIUS_PROPERTY(SIDE) \
RCT_CUSTOM_VIEW_PROPERTY(border##SIDE##Radius, CGFloat, RCTView) \
{ \
if ([view respondsToSelector:@selector(setBorder##SIDE##Radius:)]) { \
view.border##SIDE##Radius = json ? [RCTConvert CGFloat:json] : defaultView.border##SIDE##Radius; \
} \
} \
RCT_VIEW_BORDER_RADIUS_PROPERTY(TopLeft)
RCT_VIEW_BORDER_RADIUS_PROPERTY(TopRight)
RCT_VIEW_BORDER_RADIUS_PROPERTY(TopStart)
RCT_VIEW_BORDER_RADIUS_PROPERTY(TopEnd)
RCT_VIEW_BORDER_RADIUS_PROPERTY(BottomLeft)
RCT_VIEW_BORDER_RADIUS_PROPERTY(BottomRight)
RCT_VIEW_BORDER_RADIUS_PROPERTY(BottomStart)
RCT_VIEW_BORDER_RADIUS_PROPERTY(BottomEnd)
RCT_REMAP_VIEW_PROPERTY(display, reactDisplay, YGDisplay)
RCT_REMAP_VIEW_PROPERTY(zIndex, reactZIndex, NSInteger)
#pragma mark - ShadowView properties
RCT_EXPORT_SHADOW_PROPERTY(top, YGValue)
RCT_EXPORT_SHADOW_PROPERTY(right, YGValue)
RCT_EXPORT_SHADOW_PROPERTY(start, YGValue)
RCT_EXPORT_SHADOW_PROPERTY(end, YGValue)
RCT_EXPORT_SHADOW_PROPERTY(bottom, YGValue)
RCT_EXPORT_SHADOW_PROPERTY(left, YGValue)
RCT_EXPORT_SHADOW_PROPERTY(width, YGValue)
RCT_EXPORT_SHADOW_PROPERTY(height, YGValue)
RCT_EXPORT_SHADOW_PROPERTY(minWidth, YGValue)
RCT_EXPORT_SHADOW_PROPERTY(maxWidth, YGValue)
RCT_EXPORT_SHADOW_PROPERTY(minHeight, YGValue)
RCT_EXPORT_SHADOW_PROPERTY(maxHeight, YGValue)
RCT_EXPORT_SHADOW_PROPERTY(borderTopWidth, float)
RCT_EXPORT_SHADOW_PROPERTY(borderRightWidth, float)
RCT_EXPORT_SHADOW_PROPERTY(borderBottomWidth, float)
RCT_EXPORT_SHADOW_PROPERTY(borderLeftWidth, float)
RCT_EXPORT_SHADOW_PROPERTY(borderStartWidth, float)
RCT_EXPORT_SHADOW_PROPERTY(borderEndWidth, float)
RCT_EXPORT_SHADOW_PROPERTY(borderWidth, float)
RCT_EXPORT_SHADOW_PROPERTY(marginTop, YGValue)
RCT_EXPORT_SHADOW_PROPERTY(marginRight, YGValue)
RCT_EXPORT_SHADOW_PROPERTY(marginBottom, YGValue)
RCT_EXPORT_SHADOW_PROPERTY(marginLeft, YGValue)
RCT_EXPORT_SHADOW_PROPERTY(marginStart, YGValue)
RCT_EXPORT_SHADOW_PROPERTY(marginEnd, YGValue)
RCT_EXPORT_SHADOW_PROPERTY(marginVertical, YGValue)
RCT_EXPORT_SHADOW_PROPERTY(marginHorizontal, YGValue)
RCT_EXPORT_SHADOW_PROPERTY(margin, YGValue)
RCT_EXPORT_SHADOW_PROPERTY(paddingTop, YGValue)
RCT_EXPORT_SHADOW_PROPERTY(paddingRight, YGValue)
RCT_EXPORT_SHADOW_PROPERTY(paddingBottom, YGValue)
RCT_EXPORT_SHADOW_PROPERTY(paddingLeft, YGValue)
RCT_EXPORT_SHADOW_PROPERTY(paddingStart, YGValue)
RCT_EXPORT_SHADOW_PROPERTY(paddingEnd, YGValue)
RCT_EXPORT_SHADOW_PROPERTY(paddingVertical, YGValue)
RCT_EXPORT_SHADOW_PROPERTY(paddingHorizontal, YGValue)
RCT_EXPORT_SHADOW_PROPERTY(padding, YGValue)
RCT_EXPORT_SHADOW_PROPERTY(flex, float)
RCT_EXPORT_SHADOW_PROPERTY(flexGrow, float)
RCT_EXPORT_SHADOW_PROPERTY(flexShrink, float)
RCT_EXPORT_SHADOW_PROPERTY(flexBasis, YGValue)
RCT_EXPORT_SHADOW_PROPERTY(flexDirection, YGFlexDirection)
RCT_EXPORT_SHADOW_PROPERTY(flexWrap, YGWrap)
RCT_EXPORT_SHADOW_PROPERTY(justifyContent, YGJustify)
RCT_EXPORT_SHADOW_PROPERTY(alignItems, YGAlign)
RCT_EXPORT_SHADOW_PROPERTY(alignSelf, YGAlign)
RCT_EXPORT_SHADOW_PROPERTY(alignContent, YGAlign)
RCT_EXPORT_SHADOW_PROPERTY(position, YGPositionType)
RCT_EXPORT_SHADOW_PROPERTY(aspectRatio, float)
RCT_EXPORT_SHADOW_PROPERTY(overflow, YGOverflow)
RCT_EXPORT_SHADOW_PROPERTY(display, YGDisplay)
RCT_EXPORT_SHADOW_PROPERTY(onLayout, RCTDirectEventBlock)
RCT_EXPORT_SHADOW_PROPERTY(direction, YGDirection)
@end