//
//  View.swift
//  Cyberlock
//
//  Created by Juraldinio on 9/1/19.
//  Copyright © 2019 Omicronmedia. All rights reserved.
//

import Foundation
import AppKit

class View: NSView {
    
    var useHandCursor = false {
        didSet {
            self.window?.invalidateCursorRects(for: self)
        }
    }
    
    var isHoverEnabled = false
    
    weak var target: AnyObject?
    var action: Selector?
    
    @available(*, unavailable)
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    init() {
        super.init(frame: .zero)
        setup()
    }
    
    override init(frame frameRect: NSRect) {
        super.init(frame: frameRect)
        setup()
    }
    
    func setup() {
        addSubviews()
        addConstraints()
    }
    
    func addSubviews() { }
    func addConstraints() { }
    func onMouseHover(_ hover: Bool) { }
    
    override func resetCursorRects() {
        super.resetCursorRects()
        guard self.useHandCursor else { return }
        self.addCursorRect(self.bounds, cursor: NSCursor.pointingHand)
    }
    
    override func mouseDown(with event: NSEvent) {
        guard self.useHandCursor
            , let action = self.action else {
            super.mouseDown(with: event)
                return
        }
        NSApp.sendAction(action, to: self.target, from: self)
    }
    
    override func mouseEntered(with theEvent: NSEvent) {
        super.mouseEntered(with: theEvent)
        guard self.isHoverEnabled else { return }
        self.onMouseHover(true)
    }
   
    override func mouseExited(with theEvent: NSEvent) {
        super.mouseExited(with: theEvent)
        guard self.isHoverEnabled else { return }
        self.onMouseHover(false)
    }
}