493 lines
17 KiB
Mathematica
493 lines
17 KiB
Mathematica
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/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#import "RCTComponentData.h"
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#import <objc/message.h>
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#import "RCTBridge.h"
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#import "RCTBridgeModule.h"
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#import "RCTComponentEvent.h"
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#import "RCTConstants.h"
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#import "RCTConvert.h"
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#import "RCTEventDispatcherProtocol.h"
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#import "RCTParserUtils.h"
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#import "RCTShadowView.h"
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#import "RCTUtils.h"
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#import "UIView+React.h"
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typedef void (^RCTPropBlock)(id<RCTComponent> view, id json);
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typedef NSMutableDictionary<NSString *, RCTPropBlock> RCTPropBlockDictionary;
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typedef void (^InterceptorBlock)(NSString *eventName, NSDictionary *event, id sender);
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/**
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* Get the converter function for the specified type
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*/
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static SEL selectorForType(NSString *type)
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{
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const char *input = type.UTF8String;
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return NSSelectorFromString([RCTParseType(&input) stringByAppendingString:@":"]);
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}
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@implementation RCTComponentData {
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id<RCTComponent> _defaultView; // Only needed for RCT_CUSTOM_VIEW_PROPERTY
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RCTPropBlockDictionary *_viewPropBlocks;
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RCTPropBlockDictionary *_shadowPropBlocks;
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__weak RCTBridge *_bridge;
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__weak id<RCTEventDispatcherProtocol> _eventDispatcher;
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}
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@synthesize manager = _manager;
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@synthesize bridgelessViewManager = _bridgelessViewManager;
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- (instancetype)initWithManagerClass:(Class)managerClass
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bridge:(RCTBridge *)bridge
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eventDispatcher:(id<RCTEventDispatcherProtocol>)eventDispatcher
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{
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if ((self = [super init])) {
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_bridge = bridge;
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_eventDispatcher = eventDispatcher;
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_managerClass = managerClass;
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_viewPropBlocks = [NSMutableDictionary new];
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_shadowPropBlocks = [NSMutableDictionary new];
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_name = moduleNameForClass(managerClass);
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}
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return self;
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}
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- (RCTViewManager *)manager
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{
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if (!_manager && _bridge) {
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_manager = [_bridge moduleForClass:_managerClass];
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} else if (!_manager && !_bridgelessViewManager) {
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_bridgelessViewManager = [_managerClass new];
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[[NSNotificationCenter defaultCenter] postNotificationName:RCTDidInitializeModuleNotification
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object:nil
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userInfo:@{@"module" : _bridgelessViewManager}];
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}
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return _manager ?: _bridgelessViewManager;
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}
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RCT_NOT_IMPLEMENTED(-(instancetype)init)
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- (UIView *)createViewWithTag:(nullable NSNumber *)tag rootTag:(nullable NSNumber *)rootTag
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{
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RCTAssertMainQueue();
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UIView *view = [self.manager view];
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view.reactTag = tag;
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view.rootTag = rootTag;
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view.multipleTouchEnabled = YES;
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view.userInteractionEnabled = YES; // required for touch handling
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view.layer.allowsGroupOpacity = YES; // required for touch handling
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return view;
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}
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- (RCTShadowView *)createShadowViewWithTag:(NSNumber *)tag
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{
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RCTShadowView *shadowView = [self.manager shadowView];
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shadowView.reactTag = tag;
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shadowView.viewName = _name;
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return shadowView;
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}
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- (void)callCustomSetter:(SEL)setter onView:(id<RCTComponent>)view withProp:(id)json isShadowView:(BOOL)isShadowView
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{
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json = RCTNilIfNull(json);
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if (!isShadowView) {
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if (!json && !_defaultView) {
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// Only create default view if json is null
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_defaultView = [self createViewWithTag:nil rootTag:nil];
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}
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((void (*)(id, SEL, id, id, id))objc_msgSend)(self.manager, setter, json, view, _defaultView);
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} else {
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((void (*)(id, SEL, id, id))objc_msgSend)(self.manager, setter, json, view);
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}
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}
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static RCTPropBlock createEventSetter(
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NSString *propName,
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SEL setter,
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InterceptorBlock eventInterceptor,
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id<RCTEventDispatcherProtocol> eventDispatcher)
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{
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__weak id<RCTEventDispatcherProtocol> weakEventDispatcher = eventDispatcher;
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return ^(id target, id json) {
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void (^eventHandler)(NSDictionary *event) = nil;
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if ([RCTConvert BOOL:json]) {
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__weak id<RCTComponent> weakTarget = target;
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eventHandler = ^(NSDictionary *event) {
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// The component no longer exists, we shouldn't send the event
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id<RCTComponent> strongTarget = weakTarget;
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if (!strongTarget) {
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return;
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}
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if (eventInterceptor) {
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eventInterceptor(propName, event, strongTarget.reactTag);
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} else {
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RCTComponentEvent *componentEvent = [[RCTComponentEvent alloc] initWithName:propName
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viewTag:strongTarget.reactTag
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body:event];
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[weakEventDispatcher sendEvent:componentEvent];
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}
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};
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}
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((void (*)(id, SEL, id))objc_msgSend)(target, setter, eventHandler);
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};
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}
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static RCTPropBlock createNSInvocationSetter(NSMethodSignature *typeSignature, SEL type, SEL getter, SEL setter)
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{
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NSInvocation *typeInvocation = [NSInvocation invocationWithMethodSignature:typeSignature];
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typeInvocation.selector = type;
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typeInvocation.target = [RCTConvert class];
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__block NSInvocation *targetInvocation = nil;
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__block NSMutableData *defaultValue = nil;
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return ^(id target, id json) {
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if (!target) {
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return;
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}
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// Get default value
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if (!defaultValue) {
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if (!json) {
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// We only set the defaultValue when we first pass a non-null
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// value, so if the first value sent for a prop is null, it's
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// a no-op (we'd be resetting it to its default when its
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// value is already the default).
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return;
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}
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// Use NSMutableData to store defaultValue instead of malloc, so
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// it will be freed automatically when setterBlock is released.
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defaultValue = [[NSMutableData alloc] initWithLength:typeSignature.methodReturnLength];
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if ([target respondsToSelector:getter]) {
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NSMethodSignature *signature = [target methodSignatureForSelector:getter];
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NSInvocation *sourceInvocation = [NSInvocation invocationWithMethodSignature:signature];
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sourceInvocation.selector = getter;
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[sourceInvocation invokeWithTarget:target];
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[sourceInvocation getReturnValue:defaultValue.mutableBytes];
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}
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}
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// Get value
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BOOL freeValueOnCompletion = NO;
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void *value = defaultValue.mutableBytes;
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if (json) {
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freeValueOnCompletion = YES;
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value = malloc(typeSignature.methodReturnLength);
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if (!value) {
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// CWE - 391 : Unchecked error condition
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// https://www.cvedetails.com/cwe-details/391/Unchecked-Error-Condition.html
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// https://eli.thegreenplace.net/2009/10/30/handling-out-of-memory-conditions-in-c
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abort();
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}
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[typeInvocation setArgument:&json atIndex:2];
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[typeInvocation invoke];
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[typeInvocation getReturnValue:value];
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}
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// Set value
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if (!targetInvocation) {
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NSMethodSignature *signature = [target methodSignatureForSelector:setter];
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targetInvocation = [NSInvocation invocationWithMethodSignature:signature];
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targetInvocation.selector = setter;
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}
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[targetInvocation setArgument:value atIndex:2];
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[targetInvocation invokeWithTarget:target];
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if (freeValueOnCompletion) {
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// Only free the value if we `malloc`d it locally, otherwise it
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// points to `defaultValue.mutableBytes`, which is managed by ARC.
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free(value);
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}
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};
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}
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- (RCTPropBlock)createPropBlock:(NSString *)name isShadowView:(BOOL)isShadowView
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{
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// Get type
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SEL type = NULL;
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NSString *keyPath = nil;
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SEL selector =
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NSSelectorFromString([NSString stringWithFormat:@"propConfig%@_%@", isShadowView ? @"Shadow" : @"", name]);
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if ([_managerClass respondsToSelector:selector]) {
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NSArray<NSString *> *typeAndKeyPath = ((NSArray<NSString *> * (*)(id, SEL)) objc_msgSend)(_managerClass, selector);
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type = selectorForType(typeAndKeyPath[0]);
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keyPath = typeAndKeyPath.count > 1 ? typeAndKeyPath[1] : nil;
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} else {
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return ^(__unused id view, __unused id json) {
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};
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}
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// Check for custom setter
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if ([keyPath isEqualToString:@"__custom__"]) {
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// Get custom setter. There is no default view in the shadow case, so the selector is different.
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NSString *selectorString;
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if (!isShadowView) {
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selectorString =
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[NSString stringWithFormat:@"set_%@:for%@View:withDefaultView:", name, isShadowView ? @"Shadow" : @""];
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} else {
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selectorString = [NSString stringWithFormat:@"set_%@:forShadowView:", name];
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}
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SEL customSetter = NSSelectorFromString(selectorString);
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__weak RCTComponentData *weakSelf = self;
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return ^(id<RCTComponent> view, id json) {
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[weakSelf callCustomSetter:customSetter onView:view withProp:json isShadowView:isShadowView];
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};
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} else {
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// Disect keypath
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NSString *key = name;
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NSArray<NSString *> *parts = [keyPath componentsSeparatedByString:@"."];
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if (parts) {
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key = parts.lastObject;
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parts = [parts subarrayWithRange:(NSRange){0, parts.count - 1}];
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}
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// Get property getter
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SEL getter = NSSelectorFromString(key);
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// Get property setter
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SEL setter = NSSelectorFromString(
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[NSString stringWithFormat:@"set%@%@:", [key substringToIndex:1].uppercaseString, [key substringFromIndex:1]]);
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// Build setter block
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void (^setterBlock)(id target, id json) = nil;
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if (type == NSSelectorFromString(@"RCTBubblingEventBlock:") ||
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type == NSSelectorFromString(@"RCTDirectEventBlock:") ||
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type == NSSelectorFromString(@"RCTCapturingEventBlock:")) {
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// Special case for event handlers
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setterBlock =
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createEventSetter(name, setter, self.eventInterceptor, _bridge ? _bridge.eventDispatcher : _eventDispatcher);
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} else {
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// Ordinary property handlers
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NSMethodSignature *typeSignature = [[RCTConvert class] methodSignatureForSelector:type];
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if (!typeSignature) {
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RCTLogError(@"No +[RCTConvert %@] function found.", NSStringFromSelector(type));
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return ^(__unused id<RCTComponent> view, __unused id json) {
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};
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}
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switch (typeSignature.methodReturnType[0]) {
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#define RCT_CASE(_value, _type) \
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case _value: { \
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__block BOOL setDefaultValue = NO; \
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__block _type defaultValue; \
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_type (*convert)(id, SEL, id) = (typeof(convert))objc_msgSend; \
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_type (*get)(id, SEL) = (typeof(get))objc_msgSend; \
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void (*set)(id, SEL, _type) = (typeof(set))objc_msgSend; \
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setterBlock = ^(id target, id json) { \
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if (json) { \
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if (!setDefaultValue && target) { \
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if ([target respondsToSelector:getter]) { \
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defaultValue = get(target, getter); \
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} \
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setDefaultValue = YES; \
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} \
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set(target, setter, convert([RCTConvert class], type, json)); \
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} else if (setDefaultValue) { \
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set(target, setter, defaultValue); \
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} \
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}; \
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break; \
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}
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RCT_CASE(_C_SEL, SEL)
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RCT_CASE(_C_CHARPTR, const char *)
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RCT_CASE(_C_CHR, char)
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RCT_CASE(_C_UCHR, unsigned char)
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RCT_CASE(_C_SHT, short)
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RCT_CASE(_C_USHT, unsigned short)
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RCT_CASE(_C_INT, int)
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RCT_CASE(_C_UINT, unsigned int)
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RCT_CASE(_C_LNG, long)
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RCT_CASE(_C_ULNG, unsigned long)
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RCT_CASE(_C_LNG_LNG, long long)
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RCT_CASE(_C_ULNG_LNG, unsigned long long)
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RCT_CASE(_C_FLT, float)
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RCT_CASE(_C_DBL, double)
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RCT_CASE(_C_BOOL, BOOL)
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RCT_CASE(_C_PTR, void *)
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RCT_CASE(_C_ID, id)
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case _C_STRUCT_B:
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default: {
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setterBlock = createNSInvocationSetter(typeSignature, type, getter, setter);
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break;
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}
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}
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}
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return ^(__unused id view, __unused id json) {
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// Follow keypath
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id target = view;
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for (NSString *part in parts) {
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target = [target valueForKey:part];
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}
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// Set property with json
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setterBlock(target, RCTNilIfNull(json));
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};
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}
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}
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- (RCTPropBlock)propBlockForKey:(NSString *)name isShadowView:(BOOL)isShadowView
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{
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RCTPropBlockDictionary *propBlocks = isShadowView ? _shadowPropBlocks : _viewPropBlocks;
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RCTPropBlock propBlock = propBlocks[name];
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if (!propBlock) {
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propBlock = [self createPropBlock:name isShadowView:isShadowView];
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#if RCT_DEBUG
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// Provide more useful log feedback if there's an error
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RCTPropBlock unwrappedBlock = propBlock;
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__weak __typeof(self) weakSelf = self;
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propBlock = ^(id<RCTComponent> view, id json) {
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NSString *logPrefix = [NSString
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stringWithFormat:@"Error setting property '%@' of %@ with tag #%@: ", name, weakSelf.name, view.reactTag];
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RCTPerformBlockWithLogPrefix(
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^{
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unwrappedBlock(view, json);
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},
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logPrefix);
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};
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#endif
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propBlocks[name] = [propBlock copy];
|
||
|
|
}
|
||
|
|
return propBlock;
|
||
|
|
}
|
||
|
|
|
||
|
|
- (void)setProps:(NSDictionary<NSString *, id> *)props forView:(id<RCTComponent>)view
|
||
|
|
{
|
||
|
|
if (!view) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
[props enumerateKeysAndObjectsUsingBlock:^(NSString *key, id json, __unused BOOL *stop) {
|
||
|
|
[self propBlockForKey:key isShadowView:NO](view, json);
|
||
|
|
}];
|
||
|
|
}
|
||
|
|
|
||
|
|
- (void)setProps:(NSDictionary<NSString *, id> *)props forShadowView:(RCTShadowView *)shadowView
|
||
|
|
{
|
||
|
|
if (!shadowView) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
[props enumerateKeysAndObjectsUsingBlock:^(NSString *key, id json, __unused BOOL *stop) {
|
||
|
|
[self propBlockForKey:key isShadowView:YES](shadowView, json);
|
||
|
|
}];
|
||
|
|
}
|
||
|
|
|
||
|
|
- (NSDictionary<NSString *, id> *)viewConfig
|
||
|
|
{
|
||
|
|
NSMutableArray<NSString *> *bubblingEvents = [NSMutableArray new];
|
||
|
|
NSMutableArray<NSString *> *capturingEvents = [NSMutableArray new];
|
||
|
|
NSMutableArray<NSString *> *directEvents = [NSMutableArray new];
|
||
|
|
|
||
|
|
#pragma clang diagnostic push
|
||
|
|
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
|
||
|
|
if (RCTClassOverridesInstanceMethod(_managerClass, @selector(customBubblingEventTypes))) {
|
||
|
|
NSArray<NSString *> *events = [self.manager customBubblingEventTypes];
|
||
|
|
for (NSString *event in events) {
|
||
|
|
[bubblingEvents addObject:RCTNormalizeInputEventName(event)];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#pragma clang diagnostic pop
|
||
|
|
|
||
|
|
unsigned int count = 0;
|
||
|
|
NSMutableDictionary *propTypes = [NSMutableDictionary new];
|
||
|
|
Method *methods = class_copyMethodList(object_getClass(_managerClass), &count);
|
||
|
|
for (unsigned int i = 0; i < count; i++) {
|
||
|
|
SEL selector = method_getName(methods[i]);
|
||
|
|
const char *selectorName = sel_getName(selector);
|
||
|
|
if (strncmp(selectorName, "propConfig", strlen("propConfig")) != 0) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
// We need to handle both propConfig_* and propConfigShadow_* methods
|
||
|
|
const char *underscorePos = strchr(selectorName + strlen("propConfig"), '_');
|
||
|
|
if (!underscorePos) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
NSString *name = @(underscorePos + 1);
|
||
|
|
NSString *type = ((NSArray<NSString *> * (*)(id, SEL)) objc_msgSend)(_managerClass, selector)[0];
|
||
|
|
if (RCT_DEBUG && propTypes[name] && ![propTypes[name] isEqualToString:type]) {
|
||
|
|
RCTLogError(
|
||
|
|
@"Property '%@' of component '%@' redefined from '%@' "
|
||
|
|
"to '%@'",
|
||
|
|
name,
|
||
|
|
_name,
|
||
|
|
propTypes[name],
|
||
|
|
type);
|
||
|
|
}
|
||
|
|
|
||
|
|
if ([type isEqualToString:@"RCTBubblingEventBlock"]) {
|
||
|
|
[bubblingEvents addObject:RCTNormalizeInputEventName(name)];
|
||
|
|
propTypes[name] = @"BOOL";
|
||
|
|
} else if ([type isEqualToString:@"RCTCapturingEventBlock"]) {
|
||
|
|
[capturingEvents addObject:RCTNormalizeInputEventName(name)];
|
||
|
|
propTypes[name] = @"BOOL";
|
||
|
|
} else if ([type isEqualToString:@"RCTDirectEventBlock"]) {
|
||
|
|
[directEvents addObject:RCTNormalizeInputEventName(name)];
|
||
|
|
propTypes[name] = @"BOOL";
|
||
|
|
} else {
|
||
|
|
propTypes[name] = type;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
free(methods);
|
||
|
|
|
||
|
|
#if RCT_DEBUG
|
||
|
|
for (NSString *event in bubblingEvents) {
|
||
|
|
if ([directEvents containsObject:event]) {
|
||
|
|
RCTLogError(
|
||
|
|
@"Component '%@' registered '%@' as both a bubbling event "
|
||
|
|
"and a direct event",
|
||
|
|
_name,
|
||
|
|
event);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
Class superClass = [_managerClass superclass];
|
||
|
|
|
||
|
|
return @{
|
||
|
|
@"propTypes" : propTypes,
|
||
|
|
@"directEvents" : directEvents,
|
||
|
|
@"bubblingEvents" : bubblingEvents,
|
||
|
|
@"capturingEvents" : capturingEvents,
|
||
|
|
@"baseModuleName" : superClass == [NSObject class] ? (id)kCFNull : moduleNameForClass(superClass),
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
static NSString *moduleNameForClass(Class managerClass)
|
||
|
|
{
|
||
|
|
// Hackety hack, this partially re-implements RCTBridgeModuleNameForClass
|
||
|
|
// We want to get rid of RCT and RK prefixes, but a lot of JS code still references
|
||
|
|
// view names by prefix. So, while RCTBridgeModuleNameForClass now drops these
|
||
|
|
// prefixes by default, we'll still keep them around here.
|
||
|
|
NSString *name = [managerClass moduleName];
|
||
|
|
if (name.length == 0) {
|
||
|
|
name = NSStringFromClass(managerClass);
|
||
|
|
}
|
||
|
|
if ([name hasPrefix:@"RK"]) {
|
||
|
|
name = [name stringByReplacingCharactersInRange:(NSRange){0, @"RK".length} withString:@"RCT"];
|
||
|
|
}
|
||
|
|
if ([name hasSuffix:@"Manager"]) {
|
||
|
|
name = [name substringToIndex:name.length - @"Manager".length];
|
||
|
|
}
|
||
|
|
|
||
|
|
RCTAssert(name.length, @"Invalid moduleName '%@'", name);
|
||
|
|
|
||
|
|
return name;
|
||
|
|
}
|
||
|
|
|
||
|
|
@end
|