139 lines
3.8 KiB
Swift
139 lines
3.8 KiB
Swift
//
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// Copyright (c) 2019 Open Whisper Systems. All rights reserved.
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//
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import Foundation
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// Outgoing message approval can be a multi-step process.
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@objc
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public enum ApprovalMode: UInt {
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// This is the final step of approval; continuing will send.
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case send
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// This is not the final step of approval; continuing will not send.
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case next
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}
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// MARK: -
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public protocol ApprovalFooterDelegate: AnyObject {
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func approvalFooterDelegateDidRequestProceed(_ approvalFooterView: ApprovalFooterView)
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func approvalMode(_ approvalFooterView: ApprovalFooterView) -> ApprovalMode
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}
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// MARK: -
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public class ApprovalFooterView: UIView {
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public weak var delegate: ApprovalFooterDelegate? {
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didSet {
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updateContents()
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}
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}
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private var approvalMode: ApprovalMode {
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guard let delegate = delegate else {
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return .send
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}
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return delegate.approvalMode(self)
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}
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override init(frame: CGRect) {
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super.init(frame: frame)
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autoresizingMask = .flexibleHeight
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translatesAutoresizingMaskIntoConstraints = false
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backgroundColor = Theme.keyboardBackgroundColor
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layoutMargins = UIEdgeInsets(top: 10, left: 16, bottom: 10, right: 16)
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let topStrokeView = UIView()
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topStrokeView.backgroundColor = Theme.hairlineColor
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addSubview(topStrokeView)
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topStrokeView.autoPinEdgesToSuperviewEdges(with: .zero, excludingEdge: .bottom)
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topStrokeView.autoSetDimension(.height, toSize: CGHairlineWidth())
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let stackView = UIStackView(arrangedSubviews: [labelScrollView, proceedButton])
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stackView.spacing = 12
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stackView.alignment = .center
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addSubview(stackView)
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stackView.autoPinEdgesToSuperviewMargins()
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updateContents()
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}
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required init?(coder aDecoder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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public override var intrinsicContentSize: CGSize {
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return CGSize.zero
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}
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// MARK: public
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private var namesText: String? {
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get {
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return namesLabel.text
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}
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}
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public func setNamesText(_ newValue: String?, animated: Bool) {
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let changes = {
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self.namesLabel.text = newValue
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self.layoutIfNeeded()
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let offset = max(0, self.labelScrollView.contentSize.width - self.labelScrollView.bounds.width)
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let trailingEdge = CGPoint(x: offset, y: 0)
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self.labelScrollView.setContentOffset(trailingEdge, animated: false)
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}
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if animated {
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UIView.animate(withDuration: 0.1, animations: changes)
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} else {
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changes()
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}
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}
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// MARK: private subviews
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lazy var labelScrollView: UIScrollView = {
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let scrollView = UIScrollView()
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scrollView.showsHorizontalScrollIndicator = false
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scrollView.addSubview(namesLabel)
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namesLabel.autoPinEdgesToSuperviewEdges()
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namesLabel.autoMatch(.height, to: .height, of: scrollView)
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return scrollView
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}()
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lazy var namesLabel: UILabel = {
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let label = UILabel()
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label.font = UIFont.ows_dynamicTypeBody
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label.textColor = Theme.secondaryTextAndIconColor
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label.setContentHuggingLow()
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return label
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}()
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lazy var proceedButton: OWSButton = {
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let button = OWSButton.sendButton(imageName: proceedImageName) { [weak self] in
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guard let self = self else { return }
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self.delegate?.approvalFooterDelegateDidRequestProceed(self)
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}
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return button
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}()
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private var proceedImageName: String {
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return approvalMode == .send ? "send-solid-24" : "arrow-right-24"
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}
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private func updateContents() {
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proceedButton.setImage(imageName: proceedImageName)
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}
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}
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