105 lines
3.4 KiB
Swift
105 lines
3.4 KiB
Swift
//
|
|
// Copyright (c) 2018 Touch Instinct
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
// of this software and associated documentation files (the Software), to deal
|
|
// in the Software without restriction, including without limitation the rights
|
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
// copies of the Software, and to permit persons to whom the Software is
|
|
// furnished to do so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included in
|
|
// all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
// THE SOFTWARE.
|
|
//
|
|
|
|
import UIKit
|
|
import RxSwift
|
|
import RxCocoa
|
|
|
|
/// Side to which activity indicator applied
|
|
public enum LoadingBarButtonSide {
|
|
case left
|
|
case right
|
|
}
|
|
|
|
/// Workaround with navigationBarButton, that can change state (UI) into activity indicator
|
|
public class LoadingBarButton {
|
|
|
|
fileprivate weak var navigationItem: UINavigationItem?
|
|
fileprivate var initialBarButton: UIBarButtonItem?
|
|
private let side: LoadingBarButtonSide
|
|
|
|
private var barButtonItem: UIBarButtonItem? {
|
|
get {
|
|
switch side {
|
|
case .left:
|
|
return navigationItem?.leftBarButtonItem
|
|
|
|
case .right:
|
|
return navigationItem?.rightBarButtonItem
|
|
}
|
|
}
|
|
set {
|
|
switch side {
|
|
case .left:
|
|
navigationItem?.leftBarButtonItem = newValue
|
|
|
|
case .right:
|
|
navigationItem?.rightBarButtonItem = newValue
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
Create an instance of LoadingBarButton
|
|
|
|
- Parameters:
|
|
- navigationItem: item to which apply changes
|
|
- side: side where navigationItem would be placed
|
|
*/
|
|
public init(navigationItem: UINavigationItem, side: LoadingBarButtonSide) {
|
|
self.navigationItem = navigationItem
|
|
self.side = side
|
|
initialBarButton = barButtonItem
|
|
}
|
|
|
|
fileprivate func setState(waiting: Bool = false) {
|
|
if waiting {
|
|
let activityIndicatorItem = UIBarButtonItem.activityIndicator
|
|
barButtonItem = activityIndicatorItem.barButton
|
|
activityIndicatorItem.activityIndicator.startAnimating()
|
|
} else {
|
|
barButtonItem = initialBarButton
|
|
}
|
|
}
|
|
}
|
|
|
|
public extension Observable {
|
|
|
|
/**
|
|
Reactive extension for LoadingBarButton
|
|
Apply transformations on subscribe and on dispose events
|
|
|
|
- Parameters:
|
|
- barButton: LoadingBarButton instance to which transformations would applied
|
|
- Returns:
|
|
- observable, that handles LoadingBarButton behaviour
|
|
*/
|
|
func changeLoadingUI(using barButton: LoadingBarButton) -> Observable<Observable.E> {
|
|
return observeOn(MainScheduler.instance)
|
|
.do(onSubscribe: {
|
|
barButton.setState(waiting: true)
|
|
}, onDispose: {
|
|
barButton.setState(waiting: false)
|
|
})
|
|
}
|
|
}
|