322 lines
10 KiB
Objective-C
322 lines
10 KiB
Objective-C
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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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 "RCTShadowView.h"
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#import "RCTViewManager.h"
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typedef void (^RCTPropBlock)(id<RCTComponent> view, id json);
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@interface RCTComponentProp : NSObject
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@property (nonatomic, copy, readonly) NSString *type;
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@property (nonatomic, copy) RCTPropBlock propBlock;
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@end
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@implementation RCTComponentProp
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- (instancetype)initWithType:(NSString *)type
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{
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if ((self = [super init])) {
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_type = [type copy];
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}
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return self;
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}
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@end
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@implementation RCTComponentData
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{
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id<RCTComponent> _defaultView;
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RCTShadowView *_defaultShadowView;
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NSMutableDictionary *_viewPropBlocks;
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NSMutableDictionary *_shadowPropBlocks;
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}
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- (instancetype)initWithManager:(RCTViewManager *)manager
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{
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if ((self = [super init])) {
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_manager = manager;
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_viewPropBlocks = [[NSMutableDictionary alloc] init];
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_shadowPropBlocks = [[NSMutableDictionary alloc] init];
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_name = RCTBridgeModuleNameForClass([manager class]);
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RCTAssert(_name.length, @"Invalid moduleName '%@'", _name);
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if ([_name hasSuffix:@"Manager"]) {
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_name = [_name substringToIndex:_name.length - @"Manager".length];
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}
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}
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return self;
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}
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RCT_NOT_IMPLEMENTED(-init)
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- (id<RCTComponent>)createViewWithTag:(NSNumber *)tag
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{
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RCTAssertMainThread();
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id<RCTComponent> view = (id<RCTComponent>)[_manager view];
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view.reactTag = tag;
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if ([view isKindOfClass:[UIView class]]) {
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((UIView *)view).multipleTouchEnabled = YES;
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((UIView *)view).userInteractionEnabled = YES; // required for touch handling
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((UIView *)view).layer.allowsGroupOpacity = YES; // required for touch handling
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}
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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 = [_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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- (RCTPropBlock)propBlockForKey:(NSString *)name defaultView:(id)defaultView
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{
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BOOL shadowView = [defaultView isKindOfClass:[RCTShadowView class]];
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NSMutableDictionary *propBlocks = shadowView ? _shadowPropBlocks : _viewPropBlocks;
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RCTPropBlock propBlock = propBlocks[name];
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if (!propBlock) {
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__weak RCTComponentData *weakSelf = self;
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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 = NSSelectorFromString([NSString stringWithFormat:@"propConfig%@_%@", shadowView ? @"Shadow" : @"", name]);
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Class managerClass = [_manager class];
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if ([managerClass respondsToSelector:selector]) {
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NSArray *typeAndKeyPath = ((NSArray *(*)(id, SEL))objc_msgSend)(managerClass, selector);
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type = NSSelectorFromString([typeAndKeyPath[0] stringByAppendingString:@":"]);
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keyPath = typeAndKeyPath.count > 1 ? typeAndKeyPath[1] : nil;
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} else {
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propBlock = ^(__unused id view, __unused id json) {};
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propBlocks[name] = propBlock;
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return propBlock;
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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
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SEL customSetter = NSSelectorFromString([NSString stringWithFormat:@"set_%@:for%@View:withDefaultView:", name, shadowView ? @"Shadow" : @""]);
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propBlock = ^(id<RCTComponent> view, id json) {
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((void (*)(id, SEL, id, id, id))objc_msgSend)(
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weakSelf.manager, customSetter, json == (id)kCFNull ? nil : json, view, defaultView
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);
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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 *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([NSString stringWithFormat:@"set%@%@:",
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[[key substringToIndex:1] uppercaseString],
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[key substringFromIndex:1]]);
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// Build setter block
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void (^setterBlock)(id target, id source, id json) = nil;
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NSMethodSignature *typeSignature = [[RCTConvert class] methodSignatureForSelector:type];
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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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_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 source, id json) { \
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set(target, setter, json ? convert([RCTConvert class], type, json) : get(source, getter)); \
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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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NSInvocation *typeInvocation = [NSInvocation invocationWithMethodSignature:typeSignature];
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[typeInvocation setSelector:type];
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[typeInvocation setTarget:[RCTConvert class]];
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__block NSInvocation *sourceInvocation = nil;
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__block NSInvocation *targetInvocation = nil;
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setterBlock = ^(id target, id source, id json) { \
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// Get value
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void *value = malloc(typeSignature.methodReturnLength);
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if (json) {
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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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} else {
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if (!sourceInvocation && source) {
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NSMethodSignature *signature = [source methodSignatureForSelector:getter];
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sourceInvocation = [NSInvocation invocationWithMethodSignature:signature];
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[sourceInvocation setSelector:getter];
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}
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[sourceInvocation invokeWithTarget:source];
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[sourceInvocation getReturnValue:value];
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}
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// Set value
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if (!targetInvocation && target) {
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NSMethodSignature *signature = [target methodSignatureForSelector:setter];
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targetInvocation = [NSInvocation invocationWithMethodSignature:signature];
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[targetInvocation setSelector: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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free(value);
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};
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break;
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}
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}
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propBlock = ^(__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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if (json == (id)kCFNull) {
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// Copy default property
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id source = defaultView;
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for (NSString *part in parts) {
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source = [source valueForKey:part];
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}
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setterBlock(target, source, nil);
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} else {
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// Set property with json
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setterBlock(target, nil, json);
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}
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};
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}
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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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propBlock = ^(id<RCTComponent> view, id json) {
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NSString *logPrefix = [NSString stringWithFormat:
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@"Error setting property '%@' of %@ with tag #%@: ",
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name, weakSelf.name, view.reactTag];
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RCTPerformBlockWithLogPrefix(^{ unwrappedBlock(view, json); }, logPrefix);
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};
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}
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propBlocks[name] = [propBlock copy];
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}
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return propBlock;
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}
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- (void)setProps:(NSDictionary *)props forView:(id<RCTComponent>)view
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{
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if (!view) {
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return;
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}
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if (!_defaultView) {
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_defaultView = [self createViewWithTag:nil];
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}
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[props enumerateKeysAndObjectsUsingBlock:^(NSString *key, id json, __unused BOOL *stop) {
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[self propBlockForKey:key defaultView:_defaultView](view, json);
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}];
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}
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- (void)setProps:(NSDictionary *)props forShadowView:(RCTShadowView *)shadowView
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{
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if (!shadowView) {
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return;
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}
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if (!_defaultShadowView) {
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_defaultShadowView = [self createShadowViewWithTag:nil];
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}
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[props enumerateKeysAndObjectsUsingBlock:^(NSString *key, id json, __unused BOOL *stop) {
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[self propBlockForKey:key defaultView:_defaultShadowView](shadowView, json);
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}];
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[shadowView updateLayout];
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}
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- (NSDictionary *)viewConfig
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{
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Class managerClass = [_manager class];
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NSMutableDictionary *propTypes = [[NSMutableDictionary alloc] init];
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unsigned int count = 0;
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Method *methods = class_copyMethodList(object_getClass(managerClass), &count);
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for (unsigned int i = 0; i < count; i++) {
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Method method = methods[i];
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SEL selector = method_getName(method);
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NSString *methodName = NSStringFromSelector(selector);
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if ([methodName hasPrefix:@"propConfig"]) {
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NSRange nameRange = [methodName rangeOfString:@"_"];
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if (nameRange.length) {
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NSString *name = [methodName substringFromIndex:nameRange.location + 1];
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NSString *type = ((NSArray *(*)(id, SEL))objc_msgSend)(managerClass, selector)[0];
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if (RCT_DEBUG && propTypes[name] && ![propTypes[name] isEqualToString:type]) {
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RCTLogError(@"Property '%@' of component '%@' redefined from '%@' "
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"to '%@'", name, _name, propTypes[name], type);
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}
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propTypes[name] = type;
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}
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}
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}
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free(methods);
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return propTypes;
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}
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@end
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