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https://github.com/ReactiveX/RxSwift.git
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93 lines
2.8 KiB
Swift
93 lines
2.8 KiB
Swift
//
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// UIControl+Rx.swift
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// RxCocoa
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//
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// Created by Daniel Tartaglia on 5/23/15.
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// Copyright © 2015 Krunoslav Zaher. All rights reserved.
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//
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#if os(iOS) || os(tvOS)
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import Foundation
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#if !RX_NO_MODULE
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import RxSwift
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#endif
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import UIKit
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extension UIControl {
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/**
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Bindable sink for `enabled` property.
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*/
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public var rx_enabled: AnyObserver<Bool> {
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return UIBindingObserver(UIElement: self) { control, value in
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control.isEnabled = value
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}.asObserver()
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}
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/**
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Bindable sink for `selected` property.
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*/
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public var rx_selected: AnyObserver<Bool> {
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return UIBindingObserver(UIElement: self) { control, selected in
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control.isSelected = selected
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}.asObserver()
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}
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/**
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Reactive wrapper for target action pattern.
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- parameter controlEvents: Filter for observed event types.
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*/
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public func rx_controlEvent(_ controlEvents: UIControlEvents) -> ControlEvent<Void> {
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let source: Observable<Void> = Observable.create { [weak self] observer in
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MainScheduler.ensureExecutingOnScheduler()
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guard let control = self else {
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observer.on(.completed)
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return NopDisposable.instance
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}
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let controlTarget = ControlTarget(control: control, controlEvents: controlEvents) {
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control in
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observer.on(.next())
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}
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return AnonymousDisposable(controlTarget.dispose)
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}.takeUntil(rx_deallocated)
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return ControlEvent(events: source)
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}
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/**
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You might be wondering why the ugly `as!` casts etc, well, for some reason if
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Swift compiler knows C is UIControl type and optimizations are turned on, it will crash.
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*/
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static func rx_value<C: AnyObject, T: Equatable>(_ control: C, getter: (C) -> T, setter: (C, T) -> Void) -> ControlProperty<T> {
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let source: Observable<T> = Observable.create { [weak weakControl = control] observer in
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guard let control = weakControl else {
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observer.on(.completed)
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return NopDisposable.instance
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}
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observer.on(.next(getter(control)))
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let controlTarget = ControlTarget(control: control as! UIControl, controlEvents: [.allEditingEvents, .valueChanged]) { _ in
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if let control = weakControl {
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observer.on(.next(getter(control)))
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}
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}
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return AnonymousDisposable(controlTarget.dispose)
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}
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.takeUntil((control as! NSObject).rx_deallocated)
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let bindingObserver = UIBindingObserver(UIElement: control, binding: setter)
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return ControlProperty<T>(values: source, valueSink: bindingObserver)
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}
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}
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#endif
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