123 lines
4.5 KiB
Swift
123 lines
4.5 KiB
Swift
// Copyright © 2022 Rangeproof Pty Ltd. All rights reserved.
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import UIKit
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import SessionUIKit
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class SessionHeaderView: UITableViewHeaderFooterView {
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// MARK: - UI
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private lazy var titleLabelConstraints: [NSLayoutConstraint] = [
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titleLabel.pin(.top, to: .top, of: self, withInset: Values.mediumSpacing),
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titleLabel.pin(.bottom, to: .bottom, of: self, withInset: -Values.mediumSpacing)
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]
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private lazy var titleLabelLeadingConstraint: NSLayoutConstraint = titleLabel.pin(.leading, to: .leading, of: self)
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private lazy var titleLabelTrailingConstraint: NSLayoutConstraint = titleLabel.pin(.trailing, to: .trailing, of: self)
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private lazy var titleSeparatorLeadingConstraint: NSLayoutConstraint = titleSeparator.pin(.leading, to: .leading, of: self)
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private lazy var titleSeparatorTrailingConstraint: NSLayoutConstraint = titleSeparator.pin(.trailing, to: .trailing, of: self)
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private let titleLabel: UILabel = {
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let result: UILabel = UILabel()
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result.translatesAutoresizingMaskIntoConstraints = false
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result.font = .systemFont(ofSize: Values.mediumFontSize)
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result.themeTextColor = .textSecondary
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result.isHidden = true
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return result
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}()
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private let titleSeparator: Separator = {
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let result: Separator = Separator()
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result.isHidden = true
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return result
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}()
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private let loadingIndicator: UIActivityIndicatorView = {
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let result: UIActivityIndicatorView = UIActivityIndicatorView(style: .medium)
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result.themeTintColor = .textPrimary
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result.alpha = 0.5
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result.startAnimating()
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result.hidesWhenStopped = true
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result.isHidden = true
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return result
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}()
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// MARK: - Initialization
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override init(reuseIdentifier: String?) {
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super.init(reuseIdentifier: reuseIdentifier)
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self.backgroundView = UIView()
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self.backgroundView?.themeBackgroundColor = .backgroundPrimary
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addSubview(titleLabel)
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addSubview(titleSeparator)
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addSubview(loadingIndicator)
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setupLayout()
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}
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required init?(coder: NSCoder) {
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fatalError("use init(reuseIdentifier:) instead")
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}
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private func setupLayout() {
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titleLabel.pin(.top, to: .top, of: self, withInset: Values.mediumSpacing)
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titleLabel.pin(.bottom, to: .bottom, of: self, withInset: Values.mediumSpacing)
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titleLabel.center(.vertical, in: self)
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titleSeparator.center(.vertical, in: self)
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loadingIndicator.center(in: self)
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}
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// MARK: - Content
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override func prepareForReuse() {
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super.prepareForReuse()
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titleLabel.isHidden = true
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titleSeparator.isHidden = true
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loadingIndicator.isHidden = true
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titleLabelLeadingConstraint.isActive = false
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titleLabelTrailingConstraint.isActive = false
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titleLabelConstraints.forEach { $0.isActive = false }
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titleSeparator.center(.vertical, in: self)
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titleSeparatorLeadingConstraint.isActive = false
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titleSeparatorTrailingConstraint.isActive = false
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}
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public func update(
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title: String?,
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style: SessionTableSectionStyle = .titleRoundedContent
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) {
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let titleIsEmpty: Bool = (title ?? "").isEmpty
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switch style {
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case .titleRoundedContent, .titleEdgeToEdgeContent, .titleNoBackgroundContent:
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titleLabel.text = title
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titleLabel.isHidden = titleIsEmpty
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titleLabelLeadingConstraint.constant = style.edgePadding
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titleLabelTrailingConstraint.constant = -style.edgePadding
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titleLabelLeadingConstraint.isActive = !titleIsEmpty
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titleLabelTrailingConstraint.isActive = !titleIsEmpty
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titleLabelConstraints.forEach { $0.isActive = true }
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case .titleSeparator:
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titleSeparator.update(title: title)
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titleSeparator.isHidden = false
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titleSeparatorLeadingConstraint.constant = style.edgePadding
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titleSeparatorTrailingConstraint.constant = -style.edgePadding
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titleSeparatorLeadingConstraint.isActive = !titleIsEmpty
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titleSeparatorTrailingConstraint.isActive = !titleIsEmpty
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case .none, .padding: break
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case .loadMore: loadingIndicator.isHidden = false
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}
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self.layoutIfNeeded()
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}
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}
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