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FBSessionLoginStrategy.h
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FBSessionLoginStrategy.h
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/*
* Copyright 2010-present Facebook.
*
* 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 "FBSession+FBSessionLoginStrategy.h"
#import "FBSessionAuthLogger.h"
#import "FBSessionLoginStrategyParams.h"
#import "FacebookSDK.h"
// these are helpful macros for testing various login methods, should always checkin as NO/NO
#define TEST_DISABLE_MULTITASKING_LOGIN NO
#define TEST_DISABLE_FACEBOOKLOGIN NO
#define TEST_DISABLE_FACEBOOKNATIVELOGIN NO
// Internal protocol that describes a type that can perform authorization.
// It's possible for a strategy to compose over other strategies. See `FBSessionAppSwitchingLoginStategy`.
@protocol FBSessionLoginStrategy <NSObject>
@required
/*!
@method
@abstract Instructs the instance to attempt to perform the login.
@param params A collection of parameters typically used to evalute if a given strategy should be invoked.
@param session The session instance.
@param logger The logger instance.
@discussion
A return value of 'NO' indicates
another login strategy should be tried. A value of 'YES' means the strategy has handled the login flow
and no other strategies should be tried (note this does not necessarily mean the login was successful).
*/
- (BOOL)tryPerformAuthorizeWithParams:(FBSessionLoginStrategyParams *)params session:(FBSession *)session logger:(FBSessionAuthLogger *)logger;
/*! @
abstract Gets the methodName describing this login strategy, typically for external logging.
@discussion This should only be invoked if a `tryPerformAuthorizeWithParams:...` call returned YES.
*/
@property (readonly) NSString *methodName;
@end