import Buffer

class MyClass: BufferDelegate {

  lazy var buffer: Buffer<Foo> = {
    // The `sort` and the `filter` closure are optional - they are a convenient way to map the src array.
    let buffer = Buffer(initialArray: self.elements, sort: { $0.bar > $1.bar }, filter: { $0.isBaz })
    buffer.delegate = self
  }()

  var elements: [Foo] = [Foo]() {
    didSet {
      // When the elements are changed the buffer object will compute the difference and trigger
      // the invocation of the delegate methods.
      // The `synchronous` and `completion` arguments are optional.
      self.buffer.update(with: newValues, synchronous: false, completion: nil)
    }
  }


  //These methods will be called when the buffer has changedd.

  public func buffer(willChangeContent buffer: BufferType) {
    //e.g. self.tableView?.beginUpdates()

  }

  public func buffer(didDeleteElementAtIndices buffer: BufferType, indices: [UInt]) {
    //e.g. Remove rows from a tableview
  }

  public func buffer(didInsertElementsAtIndices buffer: BufferType, indices: [UInt]) {
  }

  public func buffer(didChangeContent buffer: BufferType) {
  }

  public func buffer(didChangeElementAtIndex buffer: BufferType, index: UInt) {
  }

  public func buffer(didMoveElement buffer: BufferType, from: UInt, to: UInt) {
  }

  public func buffer(didChangeAllContent buffer: BufferType) {
  }
}

import Buffer

class MyClass: UITableViewController {

  lazy var buffer: Buffer<Foo> = {
    // The `sort` and the `filter` closure are optional - they are convenient way to map the src array.
    let buffer = Buffer(initialArray: self.elements, sort: { $0.bar > $1.bar }, filter: { $0.isBaz })
    buffer.delegate = self
  }()

  var elements: [Foo] = [Foo]() {
    didSet {
      // When the elements are changed the buffer object will compute the difference and trigger
      // the invocation of the delegate methods.
      // The `synchronous` and `completion` arguments are optional.
      self.buffer.update(with: newValues, synchronous: false, completion: nil)
    }
  }

  let adapter: TableViewDiffAdapter<Foo>!

  init() {
    super.init()
    self.adapter = TableViewDiffAdapter(buffer: self.buffer, view: self.tableView)

    // Additionaly you can let the adapter be the datasource for your table view by passing a cell
    // configuration closure to the adpater.
    adapter.useAsDataSource { (tableView, object, indexPath) -> UITableViewCell in
      let cell = tableView.dequeueReusableCellWithIdentifier("MyCell")
	  			cell?.textLabel?.text = object.foo
	  			return cell
    }
  }

}

import Buffer

class ViewController: UIViewController {

  lazy var tableView: TableView<FooModel> = {
    let tableView = TableView<FooModel>()
    return tableView
  }()

  lazy var elements: [ListItem<FooModel>] = {
    var elements = [ListItem<FooModel>]()
    for _ in 0...100 {
      // AnyListItem wraps the data and the configuration for every row in the tableview.
      let item = ListItem(type: UITableViewCell.self,
                          container: self.tableView,
                          model: FooModel(text: "Foo"))) {
        cell, model in
        cell.textLabel?.text = model.text
      }
      elements.append(item)
    }
    return elements
  }()

  override func viewDidLayoutSubviews() {
    self.tableView.frame = self.view.bounds
  }

  override func viewDidLoad() {
    super.viewDidLoad()
    self.view.addSubview(self.tableView)
    self.tableView.elements = self.elements
  }
}