112 lines
3.1 KiB
Swift
Executable File
112 lines
3.1 KiB
Swift
Executable File
/*
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Copyright 2019 New Vector Ltd
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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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http://www.apache.org/licenses/LICENSE-2.0
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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 UIKit
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final class ActivityIndicatorView: UIView {
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// MARK: - Constants
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private enum Constants {
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static let cornerRadius: CGFloat = 5.0
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static let activityIndicatorMargin = CGSize(width: 30.0, height: 30.0)
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}
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// MARK: - Properties
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// MARK: Outlets
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@IBOutlet private var activityIndicatorView: UIActivityIndicatorView!
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@IBOutlet private var activityIndicatorBackgroundView: UIView!
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// MARK: Public
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var color: UIColor? {
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get {
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activityIndicatorView.color
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}
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set {
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activityIndicatorView.color = newValue
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}
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}
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// MARK: - Setup
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private func commonInit() {
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activityIndicatorBackgroundView.layer.masksToBounds = true
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}
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convenience init() {
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self.init(frame: CGRect.zero)
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}
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required init?(coder aDecoder: NSCoder) {
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super.init(coder: aDecoder)
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loadNibContent()
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commonInit()
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}
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override init(frame: CGRect) {
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super.init(frame: frame)
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loadNibContent()
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commonInit()
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}
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// MARK: - Overrides
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override var intrinsicContentSize: CGSize {
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CGSize(width: activityIndicatorView.intrinsicContentSize.width + Constants.activityIndicatorMargin.width,
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height: activityIndicatorView.intrinsicContentSize.height + Constants.activityIndicatorMargin.height)
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}
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override func layoutSubviews() {
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super.layoutSubviews()
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activityIndicatorBackgroundView.layer.cornerRadius = Constants.cornerRadius
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}
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// MARK: - Public
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func startAnimating() {
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activityIndicatorView.startAnimating()
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}
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func stopAnimating() {
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activityIndicatorView.stopAnimating()
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}
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}
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private extension UIView {
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static var nib: UINib {
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UINib(nibName: String(describing: self), bundle: Bundle(for: self))
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}
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func loadNibContent() {
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let layoutAttributes: [NSLayoutConstraint.Attribute] = [.top, .leading, .bottom, .trailing]
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for case let view as UIView in type(of: self).nib.instantiate(withOwner: self, options: nil) {
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view.translatesAutoresizingMaskIntoConstraints = false
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addSubview(view)
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NSLayoutConstraint.activate(layoutAttributes.map { attribute in
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NSLayoutConstraint(
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item: view, attribute: attribute,
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relatedBy: .equal,
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toItem: self, attribute: attribute,
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multiplier: 1, constant: 0.0
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)
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})
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}
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}
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}
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