/**
 * Tae Won Ha - http://taewon.de - @hataewon
 * See LICENSE
 */

import Cocoa
import RxSwift

class PrefPane: NSView, Component {
  
  let disposeBag = DisposeBag()

  private let source: Observable<Any>

  private let subject = PublishSubject<Any>()
  var sink: Observable<Any> {
    return self.subject.asObservable()
  }

  // Return true to place this to the upper left corner when the scroll view is bigger than this view.
  override var flipped: Bool {
    return true
  }

  var displayName: String {
    preconditionFailure("Please override")
  }
  
  var pinToContainer: Bool {
    return false
  }

  init(source: Observable<Any>) {
    self.source = source

    super.init(frame: CGRect.zero)
    self.translatesAutoresizingMaskIntoConstraints = false
    
    self.addViews()
    self.subscription(source: self.source).addDisposableTo(self.disposeBag)
  }

  deinit {
    self.subject.onCompleted()
  }
  
  required init?(coder: NSCoder) {
    fatalError("init(coder:) has not been implemented")
  }

  func addViews() {
    preconditionFailure("Please override")
  }

  func subscription(source source: Observable<Any>) -> Disposable {
    preconditionFailure("Please override")
  }
  
  func publish(event event: Any) {
    self.subject.onNext(event)
  }

  func windowWillClose() {
    
  }
}

// MARK: - Control Utils
extension PrefPane {

  func paneTitleTextField(title title: String) -> NSTextField {
    let field = defaultTitleTextField()
    field.font = NSFont.boldSystemFontOfSize(16)
    field.alignment = .Left;
    field.stringValue = title
    return field
  }

  func titleTextField(title title: String) -> NSTextField {
    let field = defaultTitleTextField()
    field.alignment = .Right;
    field.stringValue = title
    return field
  }

  func infoTextField(text text: String) -> NSTextField {
    let field = NSTextField(forAutoLayout: ())
    field.font = NSFont.systemFontOfSize(NSFont.smallSystemFontSize())
    field.textColor = NSColor.grayColor()
    field.backgroundColor = NSColor.clearColor()
    field.editable = false
    field.bordered = false

    // both are needed, otherwise hyperlink won't accept mousedown
    field.selectable = true
    field.allowsEditingTextAttributes = true

    field.stringValue = text

    return field
  }

  func configureCheckbox(button button: NSButton, title: String, action: Selector) {
    button.title = title
    button.setButtonType(.SwitchButton)
    button.bezelStyle = .ThickSquareBezelStyle
    button.target = self
    button.action = action
  }

  private func defaultTitleTextField() -> NSTextField {
    let field = NSTextField(forAutoLayout: ())
    field.backgroundColor = NSColor.clearColor();
    field.editable = false;
    field.bordered = false;
    return field
  }
}