// Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
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//
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// You are hereby granted a non-exclusive, worldwide, royalty-free license to use,
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// copy, modify, and distribute this software in source code or binary form for use
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// in connection with the web services and APIs provided by Facebook.
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//
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// As with any software that integrates with the Facebook platform, your use of
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// this software is subject to the Facebook Developer Principles and Policies
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// [http://developers.facebook.com/policy/]. This copyright notice shall be
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// included in all copies or substantial portions of the software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#import <Foundation/Foundation.h>
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#import <UIKit/UIKit.h>
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#import <FBSDKShareKit/FBSDKAppInviteContent.h>
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@protocol FBSDKAppInviteDialogDelegate;
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/**
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A dialog for sending App Invites.
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*/
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@interface FBSDKAppInviteDialog : NSObject
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/**
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Convenience method to show a FBSDKAppInviteDialog
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- Parameter viewController: A UIViewController to present the dialog from.
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- Parameter content: The content for the app invite.
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- Parameter delegate: The receiver's delegate.
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*/
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+ (instancetype)showFromViewController:(UIViewController *)viewController
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withContent:(FBSDKAppInviteContent *)content
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delegate:(id<FBSDKAppInviteDialogDelegate>)delegate;
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/**
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- Warning:use showFromViewController:withContent:delegate: instead
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*/
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+ (instancetype)showWithContent:(FBSDKAppInviteContent *)content delegate:(id<FBSDKAppInviteDialogDelegate>)delegate
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__attribute__ ((deprecated("use showFromViewController:withContent:delegate: instead")));
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/**
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A UIViewController to present the dialog from.
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If not specified, the top most view controller will be automatically determined as best as possible.
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*/
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@property (nonatomic, weak) UIViewController *fromViewController;
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/**
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The receiver's delegate or nil if it doesn't have a delegate.
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*/
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@property (nonatomic, weak) id<FBSDKAppInviteDialogDelegate> delegate;
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/**
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The content for app invite.
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*/
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@property (nonatomic, copy) FBSDKAppInviteContent *content;
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/**
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A Boolean value that indicates whether the receiver can initiate an app invite.
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May return NO if the appropriate Facebook app is not installed and is required or an access token is
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required but not available. This method does not validate the content on the receiver, so this can be checked before
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building up the content.
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- See:validateWithError:
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- Returns: YES if the receiver can show the dialog, otherwise NO.
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*/
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- (BOOL)canShow;
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/**
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Begins the app invite from the receiver.
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- Returns: YES if the receiver was able to show the dialog, otherwise NO.
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*/
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- (BOOL)show;
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/**
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Validates the content on the receiver.
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- Parameter errorRef: If an error occurs, upon return contains an NSError object that describes the problem.
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- Returns: YES if the content is valid, otherwise NO.
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*/
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- (BOOL)validateWithError:(NSError *__autoreleasing *)errorRef;
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@end
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/**
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A delegate for FBSDKAppInviteDialog.
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The delegate is notified with the results of the app invite as long as the application has permissions to
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receive the information. For example, if the person is not signed into the containing app, the shower may not be able
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to distinguish between completion of an app invite and cancellation.
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*/
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@protocol FBSDKAppInviteDialogDelegate <NSObject>
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/**
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Sent to the delegate when the app invite completes without error.
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- Parameter appInviteDialog: The FBSDKAppInviteDialog that completed.
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- Parameter results: The results from the dialog. This may be nil or empty.
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*/
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- (void)appInviteDialog:(FBSDKAppInviteDialog *)appInviteDialog didCompleteWithResults:(NSDictionary *)results;
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/**
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Sent to the delegate when the app invite encounters an error.
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- Parameter appInviteDialog: The FBSDKAppInviteDialog that completed.
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- Parameter error: The error.
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*/
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- (void)appInviteDialog:(FBSDKAppInviteDialog *)appInviteDialog didFailWithError:(NSError *)error;
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@end
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