/*
 * Copyright 2017 Google
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#import <Foundation/Foundation.h>
#import "FIRDataSnapshot.h"
#import "FIRDatabaseReference.h"
#import "FTupleUserCallback.h"
#import "FEvent.h"

@protocol FEventRegistration;
@protocol FIndex;

@interface FDataEvent : NSObject<FEvent>

- initWithEventType:(FIRDataEventType)type eventRegistration:(id<FEventRegistration>)eventRegistration
       dataSnapshot:(FIRDataSnapshot *)dataSnapshot;
- initWithEventType:(FIRDataEventType)type eventRegistration:(id<FEventRegistration>)eventRegistration
       dataSnapshot:(FIRDataSnapshot *)snapshot prevName:(NSString *)prevName;


@property (nonatomic, strong, readonly) id<FEventRegistration> eventRegistration;
@property (nonatomic, strong, readonly) FIRDataSnapshot * snapshot;
@property (nonatomic, strong, readonly) NSString* prevName;
@property (nonatomic, readonly) FIRDataEventType eventType;

@end