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class XXXXXXView: UIView {

    @IBOutlet weak var view: UIView!
    
    var customConstraints: [NSLayoutConstraint]!
    
    //MARK: Init code
    convenience init(frame: CGRect, q: ProjectQuestion) {
        self.init(frame: frame);
    }
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        self.commonInit()
    }
    
    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        self.commonInit()
    }
    
    deinit {
        
        //  NSNotificationCenter.defaultCenter().removeObserver(self, name: UIDeviceOrientationDidChangeNotification, object: nil);
    }
    
    override func updateConstraints() {
        self.removeConstraints(customConstraints)
        self.customConstraints.removeAll()
        if self.view != nil {
            let views = dictionaryOfNames(arr: self.view)
            //let views: [String : AnyObject] = ["": view]
            customConstraints.append(contentsOf: NSLayoutConstraint.constraints(withVisualFormat: "H:|[view]|", options: NSLayoutConstraint.FormatOptions(rawValue: 0), metrics: nil, views: views))
            customConstraints.append(contentsOf: NSLayoutConstraint.constraints(withVisualFormat: "V:|[view]|", options: NSLayoutConstraint.FormatOptions(rawValue: 0), metrics: nil, views: views))
            self.addConstraints(customConstraints)
        }
        super.updateConstraints()
    }
    
    func dictionaryOfNames(arr:UIView...) -> Dictionary<String,UIView> {
        var d = Dictionary<String,UIView>()
        for (ix,v) in arr.enumerated(){
            if(d.count==0){
                d["view"] = v
            }
            else{
                d["v\(ix+1)"] = v
            }
        }
        return d
    }
    
    func commonInit() {
        self.customConstraints = [NSLayoutConstraint]()
        var view: UIView? = nil
        let objects: [AnyObject] = Bundle.main.loadNibNamed(String(describing: type(of:self)), owner: self, options: nil)! as [AnyObject]
        for object: AnyObject in objects {
            if (object is UIView) {
                view = object as? UIView
            }
        }
        if view != nil {
            self.view = view!
            
            view!.translatesAutoresizingMaskIntoConstraints = false
            self.addSubview(view!)
            self.setNeedsUpdateConstraints()
        }
        
        initValues()
        
    }
    
    func initValues() {
        self.btnNo.setTitle("no".localized, for: UIControlState.normal);
        self.btnNo.setTitle("no".localized, for: UIControlState.highlighted);
        self.btnYes.setTitle("yes".localized, for: UIControlState.normal);
        self.btnYes.setTitle("yes".localized, for: UIControlState.highlighted);
    }
    
}

//SE DEBE ENLAZAR LA VIEW de esta property CON LA VIEW DEL XIB QUE ENGLOBA TODOS LOS COMPONENTES (mediante File's Owner)
// OJO!! Se debe poner la clase controladora del XIB en Files Owner!! NO EN LA VIEW!! 
// Y LUEGO enlazar la view principal con la view por código del .m

@interface XXXXXXView ()
  @property (strong, nonatomic) IBOutlet UIView *view;
  @property (nonatomic) NSMutableArray* customConstraints;
@end

@implementation XXXXXXView

- (instancetype)initWithCoder:(NSCoder *)aDecoder{
    
    if ((self = [super initWithCoder:aDecoder])) {
        [self commonInit];
        
    }
    return self;
}

- (void)commonInit
{
    _customConstraints = [[NSMutableArray alloc] init];
    
    UIView *view = nil;
    NSArray *objects = [[NSBundle mainBundle] loadNibNamed:NSStringFromClass([self class])
                                                     owner:self
                                                   options:nil];
    for (id object in objects) {
        if ([object isKindOfClass:[UIView class]]) {
            view = object;
            break;
        }
    }
    
    if (view != nil) {
        _view = view;
        
        view.translatesAutoresizingMaskIntoConstraints = NO;
        [self addSubview:view];
        [self setNeedsUpdateConstraints];
    }
}

- (void)updateConstraints
{
    [self removeConstraints:self.customConstraints];
    [self.customConstraints removeAllObjects];
    
    if (self.view != nil) {
        UIView *view = self.view;
        NSDictionary *views = NSDictionaryOfVariableBindings(view);
        
        [self.customConstraints addObjectsFromArray:
         [NSLayoutConstraint constraintsWithVisualFormat:
          @"H:|[view]|" options:0 metrics:nil views:views]];
        [self.customConstraints addObjectsFromArray:
         [NSLayoutConstraint constraintsWithVisualFormat:
          @"V:|[view]|" options:0 metrics:nil views:views]];
        
        [self addConstraints:self.customConstraints];
    }
    
    [super updateConstraints];
}


- (instancetype)initWithFrame:(CGRect)frame {
    
    self = [super initWithFrame:frame];
    if (self) {
        [self commonInit];
        
    }
    return self;
}