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FBNativeDialogs.m
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FBNativeDialogs.m
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/*
* Copyright 2012 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 "FBNativeDialogs.h"
#import "FBSession.h"
#import "FBError.h"
#import "FBUtility.h"
#import "Social/Social.h"
@interface FBNativeDialogs ()
+ (NSError*)createError:(NSString*)reason;
@end
@implementation FBNativeDialogs
+ (BOOL)presentShareDialogModallyFrom:(UIViewController*)viewController
initialText:(NSString*)initialText
image:(UIImage*)image
url:(NSURL*)url
handler:(FBShareDialogHandler)handler {
NSArray *images = image ? [NSArray arrayWithObject:image] : nil;
NSArray *urls = url ? [NSArray arrayWithObject:url] : nil;
return [self presentShareDialogModallyFrom:viewController
session:nil
initialText:initialText
images:images
urls:urls
handler:handler];
}
+ (BOOL)presentShareDialogModallyFrom:(UIViewController*)viewController
initialText:(NSString*)initialText
images:(NSArray*)images
urls:(NSArray*)urls
handler:(FBShareDialogHandler)handler {
return [self presentShareDialogModallyFrom:viewController
session:nil
initialText:initialText
images:images
urls:urls
handler:handler];
}
+ (BOOL)presentShareDialogModallyFrom:(UIViewController*)viewController
session:(FBSession*)session
initialText:(NSString*)initialText
images:(NSArray*)images
urls:(NSArray*)urls
handler:(FBShareDialogHandler)handler {
SLComposeViewController *composeViewController = [FBNativeDialogs composeViewControllerWithSession:session
handler:handler];
if (!composeViewController) {
return NO;
}
if (initialText) {
[composeViewController setInitialText:initialText];
}
if (images && images.count > 0) {
for (UIImage *image in images) {
[composeViewController addImage:image];
}
}
if (urls && urls.count > 0) {
for (NSURL *url in urls) {
[composeViewController addURL:url];
}
}
[composeViewController setCompletionHandler:^(SLComposeViewControllerResult result) {
BOOL cancelled = (result == SLComposeViewControllerResultCancelled);
if (handler) {
handler(cancelled ? FBNativeDialogResultCancelled : FBNativeDialogResultSucceeded, nil);
}
}];
[viewController presentModalViewController:composeViewController animated:YES];
return YES;
}
+ (BOOL)canPresentShareDialogWithSession:(FBSession*)session {
return [FBNativeDialogs composeViewControllerWithSession:session
handler:nil] != nil;
}
+ (SLComposeViewController*)composeViewControllerWithSession:(FBSession*)session
handler:(FBShareDialogHandler)handler {
// Can we even call the iOS API?
Class composeViewControllerClass = [SLComposeViewController class];
if (composeViewControllerClass == nil ||
[composeViewControllerClass isAvailableForServiceType:SLServiceTypeFacebook] == NO) {
if (handler) {
handler(FBNativeDialogResultError, [self createError:FBErrorNativeDialogNotSupported]);
}
return nil;
}
if (session == nil) {
// No session provided -- do we have an activeSession? We must either have a session that
// was authenticated with native auth, or no session at all (in which case the app is
// running unTOSed and we will rely on the OS to authenticate/TOS the user).
session = [FBSession activeSession];
}
if (session != nil) {
// If we have an open session and it's not native auth, fail. If the session is
// not open, attempting to put up the dialog will prompt the user to configure
// their account.
if (session.isOpen && session.loginType != FBSessionLoginTypeSystemAccount) {
if (handler) {
handler(FBNativeDialogResultError, [self createError:FBErrorNativeDialogInvalidForSession]);
}
return nil;
}
}
SLComposeViewController *composeViewController = [composeViewControllerClass composeViewControllerForServiceType:SLServiceTypeFacebook];
if (composeViewController == nil) {
if (handler) {
handler(FBNativeDialogResultError, [self createError:FBErrorNativeDialogCantBeDisplayed]);
}
return nil;
}
return composeViewController;
}
+ (NSError*)createError:(NSString*)reason {
NSDictionary *userInfo = [NSDictionary dictionaryWithObjectsAndKeys:reason, FBErrorNativeDialogReasonKey, nil];
NSError *error = [NSError errorWithDomain:FacebookSDKDomain
code:FBErrorNativeDialog
userInfo:userInfo];
return error;
}
@end