Rubymotion: how can I define a mouseDown event for an NSView? - events

Question

Edit: this first part has been solved
Sorry for the probably noob question, but I've searched for two days without finding an answer.
I've read the Objective-C documentation on event handling but I'm really not able to translate that to Rubymotion.
I am simply trying to define a mouseDown event on an NSView that contains a subview with an image.
Any hint?
Thanks.
New issue
EXAMPLE CODE: updated with new issue (look at the comments)
class ViewController < NSView
def loadWindow
#window = NSWindow.alloc.initWithContentRect([[400, 500], [480, 200]],
styleMask: NSTitledWindowMask|NSClosableWindowMask,
backing: NSBackingStoreBuffered,
defer: false)
#window.setTitle("Test")
#cView = ViewController.alloc.initWithFrame([[400,500], [480, 200]])
#window.setContentView(#cView)
#iView = NSImageView.alloc.initWithFrame([[100,100], [30, 30]])
#iView.setImage(NSImage.imageNamed "Icon")
#cView.addSubview(#iView)
#window.orderFrontRegardless
#window.makeKeyWindow
#var = "variable"
puts #var # This works and puts "variable"
end
def mouseDown(event)
puts "mouse click" # This puts "mouse click"
puts #var # This puts a blank line
end
end

Answer 1

Your answer was in the docs, but you just missed it :)
Handling a mouse down event is handled by NSView's parent class NSResponder:
https://developer.apple.com/library/mac/documentation/cocoa/reference/applicationkit/classes/NSResponder_Class/Reference/Reference.html#//apple_ref/occ/instm/NSResponder/mouseDown:
You just need to define mouseDown on your view.
class MyView < NSView
def mouseDown(event)
# what you want to do
end
end

Answer 2

if use the sugarcube gem, you can achieve it like this:
button = UIButton.alloc.initWithFrame([0, 0, 10, 10])
button.on(:touch) { my_code }
button.on(:touch_up_outside, :touch_cancel) { |event|
puts event.inspect
# my_code...
}
# remove handlers
button.off(:touch, :touch_up_outside, :touch_cancel)
button.off(:all)
detail: https://github.com/rubymotion/sugarcube