// // PickerView.swift // IOSPod #if !NoCustomViews import UIKit import EasyPeasy /// custom UIPickerView class, with toolbar /// /// - warning: if flag `NoCustomViews` used - this class not available open class PickerView: UIView { /// array data to show /// /// - did set: call reload all components open var data: [String] = [] { didSet { picker.reloadAllComponents() } } /// block who called when user clicked on row open var didSelect: ((_ element: String, _ inRow: Int) -> Void) = { _ in } open weak var delegate: PickerViewDelegateProtocol? /// duration hide/show animations open var animationDuration: TimeInterval = 0.6 open var toolbar = UIToolbar(frame: CGRect(x: 0, y: 0, width: 20, height: 44)) open var picker = UIPickerView(frame: CGRect(x: 0, y: 0, width: 20, height: 20)) /// inherited from UIView public convenience init() { self.init(frame: CGRect(x: 0, y: 0, width: 0, height: 0)) } /// inherited from UIView public override init(frame: CGRect) { super.init(frame: frame) setup() } /// inherited from UIView required public init?(coder aDecoder: NSCoder) { super.init(coder: aDecoder) setup() } func setup() { picker.delegate = self picker.dataSource = self addSubview(picker) addSubview(toolbar) toolbar <- [ Top(0), Right(0), Left(0), Height(44) ] picker.backgroundColor = UIColor.lightGray picker <- [ Bottom(0), Right(0), Left(0), Top(0).to(toolbar, .bottom) ] toolbar.backgroundColor = UIColor.white let flexButton = UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: nil, action: nil) let doneButton = UIBarButtonItem(barButtonSystemItem: .done, target: self, action: #selector(hide)) toolbar.setItems([flexButton, doneButton], animated: false) } /// when call this func picker select row /// /// - call: `didSelect` /// - call: `didSelectObservable`.onNext if flag `NoRxInCustomViews` is not available /// /// - Parameters: /// - row: index row to show 0 ..< data.count /// - animated: if true then animated scrolling otherwise non animated scrolling open func select(row: Int, animated: Bool = false) { precondition(row < data.count, "row \(row) need to be smaller then data.count \(data.count)") picker.selectRow(row, inComponent: 0, animated: animated) didSelect(data[row], row) delegate?.didSelect(self, data[row], row) } /// when call this func picker select row who contained this element /// /// - if element not contained in data then row not selected /// /// - call: `didSelect` /// - call: `didSelectObservable`.onNext if flag `NoRxInCustomViews` is not available /// /// - Parameters: /// - element: contained in row /// - animated: if true then animated scrolling otherwise non animated scrolling /// - return: index of element if it available @discardableResult open func select(element: String, animated: Bool = false) -> Int? { if let index = data.index(of: element) { picker.selectRow(index, inComponent: 0, animated: animated) didSelect(element, index) delegate?.didSelect(self, element, index) return index } return nil } /// hide view /// /// - Parameters: /// - animated: if true then hide animated otherwise not animated hide /// - slide: if true then view slide down otherwise view dont moved open func hide(animated: Bool = true, slideDown slide: Bool = true) { self.layoutIfNeeded() switch (animated, slide) { case (true, true): UIView.animate(withDuration: animationDuration, animations: { [weak self] in guard let welf = self else { return } welf <- [ Bottom(-welf.frame.height) ] welf.layoutIfNeeded() }) case (true, false): UIView.animate(withDuration: animationDuration, animations: { [weak self] in guard let welf = self else { return } welf.isHidden = true welf.layoutIfNeeded() }) case (false, true): self <- [ Bottom(-self.frame.height) ] case (false, false): isHidden = true } } /// show view /// /// - call: reload all components /// /// - Parameters: /// - animated: if true then show animated otherwise not animated show /// - slide: if true then view slide up otherwise view dont moved open func show(animated: Bool = true, slideUp slide: Bool = true) { self.layoutIfNeeded() switch (animated, slide) { case (true, true): UIView.animate(withDuration: animationDuration, animations: { [weak self] in guard let welf = self else { return } welf <- [ Bottom(0) ] welf.layoutIfNeeded() }) case (true, false): UIView.animate(withDuration: animationDuration, animations: { [weak self] in guard let welf = self else { return } welf.isHidden = false welf.layoutIfNeeded() }) case (false, true): self <- [ Bottom(0) ] case (false, false): isHidden = false } picker.reloadAllComponents() } open func delegatePickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent conponent: Int) { precondition(row < data.count, "row \(row) need to be smaller then data.count \(data.count)") didSelect(data[row], row) delegate?.didSelect(self, data[row], row) } } extension PickerView : UIPickerViewDataSource { public func numberOfComponents(in pickerView: UIPickerView) -> Int { return 1 } /// inherited from UIPickerViewDataSource public func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int { return data.count } } extension PickerView : UIPickerViewDelegate { public func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? { precondition(row < data.count, "row \(row) need to be smaller then data.count \(data.count)") return data[row] } /// inherited from `UIPickerViewDelegate` /// /// - call: `didSelect` /// - call: `didSelectObservable`.onNext if flag `NoRxInCustomViews` is not available public func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) { delegatePickerView(pickerView, didSelectRow: row, inComponent: component) } } #endif

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