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Add RxPickerViewDataSourceProxy, RxPickerViewDataSourceType and UIPic…
…kerView reactive extensions
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| Original file line number | Diff line number | Diff line change |
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| // | ||
| // RxPickerViewDataSourceType.swift | ||
| // RxCocoa | ||
| // | ||
| // Created by Sergey Shulga on 05/07/2017. | ||
| // Copyright © 2017 Krunoslav Zaher. All rights reserved. | ||
| // | ||
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| #if os(iOS) || os(tvOS) | ||
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| import UIKit | ||
| #if !RX_NO_MODULE | ||
| import RxSwift | ||
| #endif | ||
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| /// Marks data source as `UIPickerView` reactive data source enabling it to be used with one of the `bindTo` methods. | ||
| public protocol RxPickerViewDataSourceType { | ||
| /// Type of elements that can be bound to picker view. | ||
| associatedtype Element | ||
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| /// New observable sequence event observed. | ||
| /// | ||
| /// - parameter pickerView: Bound picker view. | ||
| /// - parameter observedEvent: Event | ||
| func pickerView(_ pickerView: UIPickerView, observedEvent: Event<Element>) | ||
| } | ||
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| #endif |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| // | ||
| // RxPickerViewDataSourceProxy.swift | ||
| // RxCocoa | ||
| // | ||
| // Created by Sergey Shulga on 05/07/2017. | ||
| // Copyright © 2017 Krunoslav Zaher. All rights reserved. | ||
| // | ||
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| #if os(iOS) || os(tvOS) | ||
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| import UIKit | ||
| #if !RX_NO_MODULE | ||
| import RxSwift | ||
| #endif | ||
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| let pickerViewDataSourceNotSet = PickerViewDataSourceNotSet() | ||
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| final class PickerViewDataSourceNotSet: NSObject, UIPickerViewDataSource { | ||
| func numberOfComponents(in pickerView: UIPickerView) -> Int { | ||
| rxAbstractMethod() | ||
| } | ||
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| func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int { | ||
| rxAbstractMethod() | ||
| } | ||
| } | ||
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| public class RxPickerViewDataSourceProxy | ||
| : DelegateProxy | ||
| , UIPickerViewDataSource | ||
| , DelegateProxyType { | ||
| public weak fileprivate(set) var pickerView: UIPickerView? | ||
| private weak var _requiredMethodsDataSource: UIPickerViewDataSource? = pickerViewDataSourceNotSet | ||
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| public required init(parentObject: AnyObject) { | ||
| self.pickerView = castOrFatalError(parentObject) | ||
| super.init(parentObject: parentObject) | ||
| } | ||
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| // MARK: UIPickerViewDataSource | ||
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| public func numberOfComponents(in pickerView: UIPickerView) -> Int { | ||
| return (_requiredMethodsDataSource ?? pickerViewDataSourceNotSet).numberOfComponents(in: pickerView) | ||
| } | ||
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| public func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int { | ||
| return (_requiredMethodsDataSource ?? pickerViewDataSourceNotSet).pickerView(pickerView, numberOfRowsInComponent: component) | ||
| } | ||
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| // MARK: proxy | ||
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| /// For more information take a look at `DelegateProxyType`. | ||
| public override class func createProxyForObject(_ object: AnyObject) -> AnyObject { | ||
| let pickerView: UIPickerView = castOrFatalError(object) | ||
| return pickerView.createRxDataSourceProxy() | ||
| } | ||
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| /// For more information take a look at `DelegateProxyType`. | ||
| public override class func delegateAssociatedObjectTag() -> UnsafeRawPointer { | ||
| return dataSourceAssociatedTag | ||
| } | ||
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| /// For more information take a look at `DelegateProxyType`. | ||
| public class func setCurrentDelegate(_ delegate: AnyObject?, toObject object: AnyObject) { | ||
| let pickerView: UIPickerView = castOrFatalError(object) | ||
| pickerView.dataSource = castOptionalOrFatalError(delegate) | ||
| } | ||
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| /// For more information take a look at `DelegateProxyType`. | ||
| public class func currentDelegateFor(_ object: AnyObject) -> AnyObject? { | ||
| let tableView: UITableView = castOrFatalError(object) | ||
| return tableView.dataSource | ||
| } | ||
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| /// For more information take a look at `DelegateProxyType`. | ||
| public override func setForwardToDelegate(_ forwardToDelegate: AnyObject?, retainDelegate: Bool) { | ||
| let requiredMethodsDataSource: UIPickerViewDataSource? = castOptionalOrFatalError(forwardToDelegate) | ||
| _requiredMethodsDataSource = requiredMethodsDataSource ?? pickerViewDataSourceNotSet | ||
| super.setForwardToDelegate(forwardToDelegate, retainDelegate: retainDelegate) | ||
| } | ||
| } | ||
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| #endif |
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