Attempt to implement delegation inheritance

I have a class called ToolbarView, which is a subclass of UIView and basically creates a UIView, in which the UIToolbar disappears / reappears on top. I also have a subclass of ToolbarView called DraggableToolbarView that allows the user to drag the view around the screen.

I need to create a delegate for the ToolbarView so that it can notify another object / class when the toolbar reappears and disappears. I also need to create a delegate for DraggableToolbarViewso that I can notify another object / class when dragging the view. The DraggableToolbarViews delegate should also notify another object / class when the toolbar reappears and disappears.

So, I decided to implement ToolbarViewDelegate, and I have DraggableToolbarViewDelegate inherited and has its own method:

ToolbarView.h

#import <UIKit/UIKit.h>

@protocol ToolbarViewDelegate;

@interface ToolbarView : UIView <UIGestureRecognizerDelegate>
{
    id <ToolbarViewDelegate> _toolbarViewDelegate;
}

@property(nonatomic, assign) id <ToolbarViewDelegate> toolbarViewDelegate;

@end

ToolbarView.m

#import "ToolbarView.h"
#import "ToolbarViewDelegate.h"

...

- (void) showBars
{      
       ...
        if (self.toolbarViewDelegate)
        {
            [self.toolbarViewDelegate toolbarViewWillShowToolbar:self];
        }

       ...
}

- (void) hideBars
{
       ...
        if (self.toolbarViewDelegate)
        {
            [self.toolbarViewDelegate toolbarViewWillHideToolbar:self];
        }

        ...
}

ToolbarViewDelegate.h

@class ToolbarView;

@protocol ToolbarViewDelegate

@required

- (void) toolBarViewWillShowToolbar:(ToolbarView *)toolbarView;
- (void) toolBarViewWillHideToolbar:(ToolbarView *)toolbarView;

@end

DraggableToolbarView.h

#import "ToolbarView.h"

@protocol DraggableToolbarViewDelegate;

@interface DraggableToolbarView : ToolbarView
{
    id <DraggableToolbarViewDelegate> _draggableToolbarViewDelegate;
}

@property(nonatomic, assign) id <DraggableToolbarViewDelegate> draggableToolbarViewDelegate;

@end

DraggableToolbarView.m

#import "DraggableToolbarView.h"
#import "DraggableToolbarViewDelegate.h"

...

- (void)drag:(UIPanGestureRecognizer *)sender
{
   ...
        if (self.draggableToolbarViewDelegate)
        {
            [self.draggableToolbarViewDelegate draggableToolbarViewWillDrag:self];
        }

  ...

}

...

DraggableToolbarViewDelegate.h

#import "ToolbarViewDelegate.h"

@class DraggableToolbarView;

@protocol DraggableToolbarViewDelegate <ToolbarViewDelegate>

@required

- (void) draggableToolbarViewWillDrag:(DraggableToolbarView *)draggableToolbarView;

@end

SomeViewController.h

#import <UIKit/UIKit.h>
#import "ToolbarViewDelegate.h"
#import "DraggableToolbarViewDelegate.h"

@interface SomeViewController : UIViewController <ToolbarViewDelegate, DraggableToolbarViewDelegate>
{

}
@end

SomeViewController.m

#import "DraggableToolbarView.h"
...
- (void) toolbarViewWillShowToolbar:(ToolbarView*)toolbarView
{
    //NSLog(@"Toolbar Showed");
}

- (void) toolbarViewWillHideToolbar:(ToolbarView*)toolbarView
{
    //NSLog(@"Toolbar Hidden");
}

- (void) draggableToolbarViewWillDrag:(DraggableToolbarView*)draggableToolbarView
{
    //NSLog(@"Dragged");
}

...

[draggableToolbarView setDraggableToolbarViewDelegate:self];

...

When I do this, only the methods respond DraggableToolbarDelegate. However, when I also execute [drabbleToolbarView setToolbarViewDelegate:self], it works. I tried to do each delegate separately without inheritance, and it works great, so I believe that the problem is not in any other part of the code.

Can anyone know why? I realized that to inherit the protocols, I also would not need to set ToolbarViewDelegate for the DraggableToolbar object.

UPDATE: much more code added