80 lines
3.1 KiB
Swift
80 lines
3.1 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 RxSwift
|
|
import RxCocoa
|
|
|
|
public typealias ScrollViewHolderView = UIView & ScrollViewHolder
|
|
|
|
/// Base controller configurable with view model and ScrollViewHolder custom view.
|
|
open class BaseScrollContentController<ViewModel, View: ScrollViewHolderView>: BaseCustomViewController<ViewModel, View> {
|
|
|
|
private var bottomInsetDisposable: Disposable?
|
|
private let defaultInsetsRelay = BehaviorRelay<UIEdgeInsets>(value: .zero)
|
|
|
|
/// Bind given driver to bottom inset of scroll view. Takes into account default bottom insets.
|
|
///
|
|
/// - Parameter bottomInsetDriver: Driver that emits CGFloat bottom inset changes.
|
|
public func bindBottomInsetBinding(from bottomInsetDriver: Driver<CGFloat>) {
|
|
bottomInsetDisposable = bottomInsetDriver
|
|
.withLatestFrom(defaultInsetsRelay.asDriver()) {
|
|
$0 + $1.bottom
|
|
}
|
|
.drive(customView.scrollView.rx.bottomInsetBinder)
|
|
}
|
|
|
|
/// Unbind scroll view from previous binding.
|
|
public func unbindBottomInsetBinding() {
|
|
bottomInsetDisposable?.dispose()
|
|
}
|
|
|
|
/// Contained UIScrollView instance.
|
|
public var scrollView: UIScrollView {
|
|
return customView.scrollView
|
|
}
|
|
|
|
/// Default insets used for contained scroll view.
|
|
public var defaultInsets: UIEdgeInsets {
|
|
get {
|
|
return defaultInsetsRelay.value
|
|
}
|
|
set {
|
|
defaultInsetsRelay.accept(newValue)
|
|
customView.scrollView.contentInset = newValue
|
|
customView.scrollView.scrollIndicatorInsets = newValue
|
|
}
|
|
}
|
|
}
|
|
|
|
public extension BaseScrollContentController {
|
|
|
|
/// On iOS, tvOS 11+ sets contentInsetAdjustmentBehavior to .never.
|
|
/// On earlier versions sets automaticallyAdjustsScrollViewInsets to false.
|
|
func disableAdjustsScrollViewInsets() {
|
|
if #available(iOS 11.0, tvOS 11.0, *) {
|
|
customView.scrollView.contentInsetAdjustmentBehavior = .never
|
|
} else {
|
|
automaticallyAdjustsScrollViewInsets = false
|
|
}
|
|
}
|
|
}
|