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https://github.com/vector-im/element-ios.git
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4af26062eb
* Server Offline Activity Indicator - implemented
126 lines
4.5 KiB
Swift
126 lines
4.5 KiB
Swift
//
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// Copyright 2021 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 Foundation
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import UIKit
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import DesignKit
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class RoundedToastView: UIView, Themable {
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private struct ShadowStyle {
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let offset: CGSize
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let radius: CGFloat
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let opacity: Float
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}
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private struct Constants {
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static let padding = UIEdgeInsets(top: 10, left: 12, bottom: 10, right: 12)
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static let activityIndicatorScale = CGFloat(0.75)
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static let imageViewSize = CGFloat(15)
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static let lightShadow = ShadowStyle(offset: .init(width: 0, height: 4), radius: 12, opacity: 0.1)
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static let darkShadow = ShadowStyle(offset: .init(width: 0, height: 4), radius: 4, opacity: 0.2)
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}
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private lazy var activityIndicator: UIActivityIndicatorView = {
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let indicator = UIActivityIndicatorView()
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indicator.transform = .init(scaleX: Constants.activityIndicatorScale, y: Constants.activityIndicatorScale)
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indicator.startAnimating()
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return indicator
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}()
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private lazy var imageView: UIImageView = {
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let imageView = UIImageView()
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imageView.contentMode = .scaleAspectFit
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imageView.translatesAutoresizingMaskIntoConstraints = false
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NSLayoutConstraint.activate([
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imageView.widthAnchor.constraint(equalToConstant: Constants.imageViewSize),
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imageView.heightAnchor.constraint(equalToConstant: Constants.imageViewSize)
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])
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return imageView
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}()
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private let stackView: UIStackView = {
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let stack = UIStackView()
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stack.axis = .horizontal
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stack.alignment = .center
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stack.spacing = 5
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return stack
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}()
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private let label: UILabel = {
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return UILabel()
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}()
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init(viewState: ToastViewState) {
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super.init(frame: .zero)
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setup(viewState: viewState)
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}
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required init?(coder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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private func setup(viewState: ToastViewState) {
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setupStackView()
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stackView.addArrangedSubview(toastView(for: viewState.style))
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stackView.addArrangedSubview(label)
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label.text = viewState.label
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}
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private func setupStackView() {
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addSubview(stackView)
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stackView.translatesAutoresizingMaskIntoConstraints = false
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NSLayoutConstraint.activate([
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stackView.topAnchor.constraint(equalTo: topAnchor, constant: Constants.padding.top),
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stackView.bottomAnchor.constraint(equalTo: bottomAnchor, constant: -Constants.padding.bottom),
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stackView.leadingAnchor.constraint(equalTo: leadingAnchor, constant: Constants.padding.left),
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stackView.trailingAnchor.constraint(equalTo: trailingAnchor, constant: -Constants.padding.right)
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])
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}
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override func layoutSubviews() {
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super.layoutSubviews()
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layer.cornerRadius = layer.frame.height / 2
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}
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func update(theme: Theme) {
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backgroundColor = theme.colors.system
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stackView.arrangedSubviews.first?.tintColor = theme.colors.primaryContent
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label.font = theme.fonts.subheadline
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label.textColor = theme.colors.primaryContent
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let shadowStyle = theme.identifier == ThemeIdentifier.dark.rawValue ? Constants.darkShadow : Constants.lightShadow
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layer.shadowColor = UIColor.black.cgColor
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layer.shadowOffset = shadowStyle.offset
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layer.shadowRadius = shadowStyle.radius
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layer.shadowOpacity = shadowStyle.opacity
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}
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private func toastView(for style: ToastViewState.Style) -> UIView {
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switch style {
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case .loading:
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return activityIndicator
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case .success:
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imageView.image = Asset.Images.checkmark.image
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return imageView
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case .failure:
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imageView.image = Asset.Images.errorIcon.image
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return imageView
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case .custom(let icon):
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imageView.image = icon?.withRenderingMode(.alwaysTemplate)
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return imageView
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}
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}
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}
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