ViewDeckController swizzles the 'presentModalViewController:animated:…

…' and '' with its own implementations.

These check if a viewdeckcontroller is present on the UIViewcontroller. If it is, it will delegate the presenting of the (modal) view to the viewdeckcontroller instead of the containing controller. This gives better results for rotation and presentation.

If no viewdeckcontroller is present, it just uses the standard implementation.

This also removes the code introduced by a remark of schemer in issue ViewDeck#28, since it's no longer applicable.
I'm not sure if this fixes ViewDeck#16?

ViewDeck/IIViewDeckController.m

@@ -415,19 +415,9 @@ - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interface
         _rightWidth = self.rightController.view.frame.size.width;
     }
 
-    // heads up to @schemers for accounting with the modal views.
-    // see: https://github.com/Inferis/ViewDeck/issues/28
-
-    // let the viewdeckcontroller modalViewController handle the rotation behavior 
-    UIViewController* rotateController = self.modalViewController;
-    // or, let the center controller modalViewController handle the rotation behavior
-    if (!rotateController) rotateController = self.centerController.modalViewController;
-    // or, let the center controller handle the rotation behavior
-    if (!rotateController) rotateController = self.centerController;
-
     BOOL should = YES;
-    if (rotateController)
-        should = [rotateController shouldAutorotateToInterfaceOrientation:interfaceOrientation];
+    if (self.centerController)
+        should = [self.centerController shouldAutorotateToInterfaceOrientation:interfaceOrientation];
 
     return should;
 }
@@ -1247,5 +1237,32 @@ - (void)setViewDeckController:(IIViewDeckController*)viewDeckController {
     objc_setAssociatedObject(self, viewDeckControllerKey, viewDeckController, OBJC_ASSOCIATION_RETAIN);
 }
 
+- (void)vdc_presentModalViewController:(UIViewController *)modalViewController animated:(BOOL)animated {
+    UIViewController* controller = self.viewDeckController ? self.viewDeckController : self;
+    [controller vdc_presentModalViewController:modalViewController animated:animated]; // when we get here, the vdc_ method is actually the old, real method
+}
+
+- (void)vdc_presentViewController:(UIViewController *)viewControllerToPresent animated:(BOOL)animated completion:(void (^)(void))completion {
+    NSLog(@"presentvc = %@", self);
+    UIViewController* controller = self.viewDeckController ? self.viewDeckController : self;
+    [controller vdc_presentViewController:viewControllerToPresent animated:animated completion:completion]; // when we get here, the vdc_ method is actually the old, real method
+}
+
++ (void)vdc_swizzle {
+    SEL presentModal = @selector(presentModalViewController:animated:);
+    SEL vdcPresentModal = @selector(vdc_presentModalViewController:animated:);
+    method_exchangeImplementations(class_getInstanceMethod(self, presentModal), class_getInstanceMethod(self, vdcPresentModal));
+
+    SEL presentVC = @selector(presentViewController:animated:completion:);
+    SEL vdcPresentVC = @selector(vdc_presentViewController:animated:completion:);
+    method_exchangeImplementations(class_getInstanceMethod(self, presentVC), class_getInstanceMethod(self, vdcPresentVC));
+}
+
++ (void)load {
+    [super load];
+    [self vdc_swizzle];
+}
+
+
 @end