import UIKit
class DownTableViewCell: UITableViewCell {
override func awakeFromNib() {
super.awakeFromNib()
setup()
}
override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
super.init(style: style, reuseIdentifier: reuseIdentifier)
setup()
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
setup()
}
private func setup() {
textLabel?.highlightedTextColor = UIButton().tintColor
backgroundColor = UIColor(red: 208/255.0, green: 213/255.0, blue: 219/255.0, alpha: 1)
selectedBackgroundView = createBackgroundView()
}
private func createBackgroundView() -> UIView {
let backgroundView = UIView(frame: CGRect(x: 0, y: 0, width: frame.size.width, height: frame.size.height - 1))
backgroundView.backgroundColor = UIColor(red: 208/255.0, green: 213/255.0, blue: 219/255.0, alpha: 1)
return backgroundView
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
accessoryType = selected ? .checkmark : .none
}
}
// DownTableView
import UIKit
class DownTableView: UIControl, UITableViewDataSource, UITableViewDelegate, UITextFieldDelegate {
var textField: UITextField!
var shouldDisplayCancelButton: Bool = true
var data: [ProductAttribute] = [ProductAttribute]()
var selectedValuesString: String = ""
var selectedValues: [ProductAttribute] = [ProductAttribute]()
var previousSelectedValues: [ProductAttribute] = [ProductAttribute]()
var tableView: UITableView?
/*
// Only override draw() if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
override func draw(_ rect: CGRect) {
// Drawing code
}
*/
init(textField: UITextField, withData data: [ProductAttribute]) {
super.init(frame: CGRect.zero)
self.textField = textField
self.textField.delegate = self
self.textField.placeholder = "Tap to choose..."
self.textField.rightView = UIImageView(image: UIImage(named: "downArrow"))
self.textField.rightView?.contentMode = UIViewContentMode.scaleAspectFit
self.textField.rightView?.clipsToBounds = true
self.textField.rightViewMode = UITextFieldViewMode.always
self.data = data
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
func showArrowImage(_ show:Bool) {
self.textField.rightViewMode = show ? UITextFieldViewMode.always : UITextFieldViewMode.never
}
func doneClick(sender: Any?) {
addAllSelectedValueToPrevious()
textField.resignFirstResponder()
if self.textField.text?.length == 0 {
self.setValue(atIndex:-1)
self.textField.placeholder = "Tap to choose..."
}
sendActions(for: UIControlEvents.valueChanged)
}
private func addAllSelectedValueToPrevious() {
previousSelectedValues.removeAll()
for value in selectedValues {
previousSelectedValues.append(value)
}
}
func cancelClicked(sender: Any?) {
textField.resignFirstResponder()
if previousSelectedValues.count == 0 {
textField.placeholder = "Tap to choose..."
}
textField.text = toString(productsAttributes: previousSelectedValues)
}
func setValue(atIndex index:NSInteger) {
if let tableView = self.tableView, index >= 0 {
self.tableView(tableView, didSelectRowAt: IndexPath(item: index, section: 0))
}
}
func showTableView(sender: Any?) {
tableView = UITableView(frame: CGRect(x: 0, y: 0, width: 320, height: 216))
tableView?.allowsMultipleSelection = true
tableView?.dataSource = self
tableView?.delegate = self
tableView?.cellLayoutMarginsFollowReadableWidth = false
for value in previousSelectedValues {
tableView?.selectRow(at: IndexPath(row: data.index(of: value)!, section: 0), animated: false, scrollPosition: .none)
}
if textField.text?.length == 0 {
// setSelected(index:0)
}
let toolbar = UIToolbar()
toolbar.barStyle = UIBarStyle.default
toolbar.sizeToFit()
let flexibleSpace = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.flexibleSpace, target: nil, action: nil)
let doneButton = UIBarButtonItem(title: "Done", style: UIBarButtonItemStyle.plain, target: self, action: #selector(DownTableView.doneClick(sender:)))
if shouldDisplayCancelButton {
let cancelButton = UIBarButtonItem(title: "Cancel", style: UIBarButtonItemStyle.plain, target: self, action: #selector(DownTableView.cancelClicked(sender:)))
toolbar.setItems([cancelButton, flexibleSpace, doneButton], animated: false)
} else {
toolbar.setItems([flexibleSpace, doneButton], animated: false)
}
textField.inputView = tableView
textField.inputAccessoryView = toolbar
}
// UITextFieldDelegate
func textFieldShouldBeginEditing(_ textField: UITextField) -> Bool {
return true
}
func textFieldDidBeginEditing(_ textField: UITextField) {
if data.count > 0 {
showTableView(sender: textField)
}
}
func textFieldDidEndEditing(_ textField: UITextField) {
textField.isUserInteractionEnabled = true
}
func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
return false
}
// UITableViewDataSource
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return data.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
var cell = tableView.dequeueReusableCell(withIdentifier: "Cell")
if cell == nil {
cell = DownTableViewCell(style: UITableViewCellStyle.default, reuseIdentifier: "Cell")
}
let item = data[indexPath.row]
cell?.textLabel?.text = item.name
return cell!
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 44
}
// UITableViewDelegate
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
selectedValues.append(data[indexPath.row])
textField.text = toString(productsAttributes: selectedValues)
}
func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
let element = data[indexPath.row]
if let index = selectedValues.index(of: element) {
selectedValues.remove(at: index)
}
textField.text = toString(productsAttributes: selectedValues)
}
private func toString(productsAttributes list:[ProductAttribute]) -> String {
var selectedValuesStrings = [String]()
for value in selectedValues {
selectedValuesStrings.append(value.name!)
}
return selectedValuesStrings.joined(separator: ",")
}
func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
if cell.responds(to: #selector(setter: UITableViewCell.separatorInset)) {
cell.separatorInset = UIEdgeInsets.zero
}
if cell.responds(to: #selector(setter: UIView.preservesSuperviewLayoutMargins)) {
cell.preservesSuperviewLayoutMargins = false
}
if cell.responds(to: #selector(setter: UIView.layoutMargins)) {
cell.layoutMargins = UIEdgeInsets.zero
}
}
}
