61 lines
2.1 KiB
Swift
61 lines
2.1 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 Foundation
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import SwiftUI
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import Introspect
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struct TimelineView: View {
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@State private var visibleEdges: [VerticalEdge] = []
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@State private var scrollToBottomPublisher = PassthroughSubject<Void, Never>()
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@State private var scrollToBottomButtonVisible = false
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var body: some View {
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ZStack(alignment: .bottomTrailing) {
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TimelineItemList(visibleEdges: $visibleEdges, scrollToBottomPublisher: scrollToBottomPublisher)
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scrollToBottomButton
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}
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}
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@ViewBuilder
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private var scrollToBottomButton: some View {
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Button { scrollToBottomPublisher.send(()) } label: {
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Image(uiImage: Asset.Images.timelineScrollToBottom.image)
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.shadow(radius: 2.0)
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.padding()
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}
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.onChange(of: visibleEdges) { edges in
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scrollToBottomButtonVisible = !edges.contains(.bottom)
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}
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.opacity(scrollToBottomButtonVisible ? 1.0 : 0.0)
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.animation(.elementDefault, value: scrollToBottomButtonVisible)
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}
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}
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struct TimelineView_Previews: PreviewProvider {
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static var previews: some View {
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let viewModel = RoomScreenViewModel(timelineController: MockRoomTimelineController(),
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timelineViewFactory: RoomTimelineViewFactory(),
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mediaProvider: MockMediaProvider(),
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roomName: nil)
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TimelineView()
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.environmentObject(viewModel.context)
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}
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}
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