94 lines
3.0 KiB
Objective-C
94 lines
3.0 KiB
Objective-C
/**
|
|
* Copyright (c) 2015-present, Facebook, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This source code is licensed under the BSD-style license found in the
|
|
* LICENSE file in the root directory of this source tree. An additional grant
|
|
* of patent rights can be found in the PATENTS file in the same directory.
|
|
*/
|
|
|
|
#import "RCTTouchEvent.h"
|
|
|
|
#import "RCTAssert.h"
|
|
|
|
@implementation RCTTouchEvent
|
|
{
|
|
NSArray<NSDictionary *> *_reactTouches;
|
|
NSArray<NSNumber *> *_changedIndexes;
|
|
uint16_t _coalescingKey;
|
|
}
|
|
|
|
@synthesize eventName = _eventName;
|
|
@synthesize viewTag = _viewTag;
|
|
|
|
- (instancetype)initWithEventName:(NSString *)eventName
|
|
reactTag:(NSNumber *)reactTag
|
|
reactTouches:(NSArray<NSDictionary *> *)reactTouches
|
|
changedIndexes:(NSArray<NSNumber *> *)changedIndexes
|
|
coalescingKey:(uint16_t)coalescingKey
|
|
{
|
|
if (self = [super init]) {
|
|
_viewTag = reactTag;
|
|
_eventName = eventName;
|
|
_reactTouches = reactTouches;
|
|
_changedIndexes = changedIndexes;
|
|
_coalescingKey = coalescingKey;
|
|
}
|
|
return self;
|
|
}
|
|
|
|
RCT_NOT_IMPLEMENTED(- (instancetype)init)
|
|
|
|
#pragma mark - RCTEvent
|
|
|
|
- (BOOL)canCoalesce
|
|
{
|
|
return [_eventName isEqual:@"touchMove"];
|
|
}
|
|
|
|
// We coalesce only move events, while holding some assumptions that seem reasonable but there are no explicit guarantees about them.
|
|
- (id<RCTEvent>)coalesceWithEvent:(id<RCTEvent>)newEvent
|
|
{
|
|
RCTAssert([newEvent isKindOfClass:[RCTTouchEvent class]], @"Touch event cannot be coalesced with any other type of event, such as provided %@", newEvent);
|
|
RCTTouchEvent *newTouchEvent = (RCTTouchEvent *)newEvent;
|
|
RCTAssert([_reactTouches count] == [newTouchEvent->_reactTouches count], @"Touch events have different number of touches. %@ %@", self, newEvent);
|
|
|
|
BOOL newEventIsMoreRecent = NO;
|
|
BOOL oldEventIsMoreRecent = NO;
|
|
NSInteger count = _reactTouches.count;
|
|
for (int i = 0; i<count; i++) {
|
|
NSDictionary *touch = _reactTouches[i];
|
|
NSDictionary *newTouch = newTouchEvent->_reactTouches[i];
|
|
RCTAssert([touch[@"identifier"] isEqual:newTouch[@"identifier"]], @"Touch events doesn't have touches in the same order. %@ %@", touch, newTouch);
|
|
if ([touch[@"timestamp"] doubleValue] > [newTouch[@"timestamp"] doubleValue]) {
|
|
oldEventIsMoreRecent = YES;
|
|
} else {
|
|
newEventIsMoreRecent = YES;
|
|
}
|
|
}
|
|
RCTAssert(!(oldEventIsMoreRecent && newEventIsMoreRecent), @"Neither touch event is exclusively more recent than the other one. %@ %@", _reactTouches, newTouchEvent->_reactTouches);
|
|
return newEventIsMoreRecent ? newEvent : self;
|
|
}
|
|
|
|
+ (NSString *)moduleDotMethod
|
|
{
|
|
return @"RCTEventEmitter.receiveTouches";
|
|
}
|
|
|
|
- (NSArray *)arguments
|
|
{
|
|
return @[RCTNormalizeInputEventName(_eventName), _reactTouches, _changedIndexes];
|
|
}
|
|
|
|
- (uint16_t)coalescingKey
|
|
{
|
|
return _coalescingKey;
|
|
}
|
|
|
|
- (NSString *)description
|
|
{
|
|
return [NSString stringWithFormat:@"<%@: %p; name = %@; coalescing key = %hu>", [self class], self, _eventName, _coalescingKey];
|
|
}
|
|
|
|
@end
|