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Support storyboard embed modules #34

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Support storyboard embed modules #34

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39 changes: 26 additions & 13 deletions Source/UIViewController+RamblerViperModuleTransitionHandlerProtocol.m
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,7 @@
#import <objc/runtime.h>
#import "RamblerViperOpenModulePromise.h"
#import "RamblerViperModuleFactory.h"
#import "RamblerViperModuleInput.h"

static IMP originalPrepareForSegueMethodImp;

Expand Down Expand Up @@ -100,29 +101,41 @@ + (void)swizzlePrepareForSegue {
});
}

static UIViewController *sourceViewControllerFromSegue(UIStoryboardSegue * segue) {
return segue.sourceViewController;
}

static UIViewController *destinationViewControllerFromSegue(UIStoryboardSegue * segue) {
UIViewController *destinationViewController = segue.destinationViewController;
if ([destinationViewController isKindOfClass:[UINavigationController class]]) {
UINavigationController *navigationController = destinationViewController;
destinationViewController = navigationController.topViewController;
}
return destinationViewController;
}

void RamblerViperPrepareForSegueSender(id self, SEL selector, UIStoryboardSegue * segue, id sender) {

((void(*)(id,SEL,UIStoryboardSegue*,id))originalPrepareForSegueMethodImp)(self,selector,segue,sender);

if (![sender isKindOfClass:[RamblerViperOpenModulePromise class]]) {
return;
}

id<RamblerViperModuleInput> moduleInput = nil;

UIViewController *destinationViewController = segue.destinationViewController;
if ([destinationViewController isKindOfClass:[UINavigationController class]]) {
UINavigationController *navigationController = segue.destinationViewController;
destinationViewController = navigationController.topViewController;
}

id<RamblerViperModuleTransitionHandlerProtocol> targetModuleTransitionHandler = destinationViewController;
id<RamblerViperModuleTransitionHandlerProtocol> targetModuleTransitionHandler = destinationViewControllerFromSegue(segue);
if ([targetModuleTransitionHandler respondsToSelector:@selector(moduleInput)]) {
moduleInput = [targetModuleTransitionHandler moduleInput];
} else {
return;
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I don't really sure that "return" is needed there.

In case sender is RamblerViperOpenModulePromise and targetModuleTransitionHandler does not respond to selector "moduleInput", variable moduleInput will be nil.
Value of this variable will be assigned to property moduleInput of RamblerViperOpenModulePromise instance and in setter (setModuleInput:) will be performed some inner setup which will allow to perform linkBlock but whith moduleInput == nil. If we do not call setModuleInput: inner setup won`t be performed and linkBlock will be never called too.

}

RamblerViperOpenModulePromise *openModulePromise = sender;
openModulePromise.moduleInput = moduleInput;
if ([sender isKindOfClass:[RamblerViperOpenModulePromise class]]) {
RamblerViperOpenModulePromise *openModulePromise = sender;
openModulePromise.moduleInput = moduleInput;
}

if ([moduleInput respondsToSelector:@selector(setModuleOutput:)]) {
id sourceOutput = [sourceViewControllerFromSegue(segue) moduleInput];
[moduleInput setModuleOutput:sourceOutput];
}
}

@end