54 lines
1.6 KiB
Swift
54 lines
1.6 KiB
Swift
//
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// Copyright 2022 New Vector Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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import Combine
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import UIKit
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class ScrollViewAdapter: NSObject, UIScrollViewDelegate {
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var scrollView: UIScrollView? {
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didSet {
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oldValue?.delegate = nil
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scrollView?.delegate = self
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}
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}
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var isScrolling = CurrentValueSubject<Bool, Never>(false)
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private func update(_ scrollView: UIScrollView) {
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isScrolling.send(scrollView.isDragging || scrollView.isDecelerating)
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}
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func scrollViewWillBeginDragging(_ scrollView: UIScrollView) {
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update(scrollView)
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}
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func scrollViewDidEndDragging(_ scrollView: UIScrollView, willDecelerate decelerate: Bool) {
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update(scrollView)
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}
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func scrollViewDidEndScrollingAnimation(_ scrollView: UIScrollView) {
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update(scrollView)
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}
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func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) {
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update(scrollView)
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}
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func scrollViewDidScrollToTop(_ scrollView: UIScrollView) {
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update(scrollView)
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}
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}
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