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PIA-675: Moved UI related code from PIALibrary (#34)
Co-authored-by: Waleed Mahmood <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,161 @@ | ||
| // | ||
| // ActivityButton.swift | ||
| // PIALibrary-iOS | ||
| // | ||
| // Created by Davide De Rosa on 10/20/17. | ||
| // Copyright © 2020 Private Internet Access, Inc. | ||
| // | ||
| // This file is part of the Private Internet Access iOS Client. | ||
| // | ||
| // The Private Internet Access iOS Client is free software: you can redistribute it and/or | ||
| // modify it under the terms of the GNU General Public License as published by the Free | ||
| // Software Foundation, either version 3 of the License, or (at your option) any later version. | ||
| // | ||
| // The Private Internet Access iOS Client is distributed in the hope that it will be useful, | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | ||
| // or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more | ||
| // details. | ||
| // | ||
| // You should have received a copy of the GNU General Public License along with the Private | ||
| // Internet Access iOS Client. If not, see <https://www.gnu.org/licenses/>. | ||
| // | ||
|
|
||
| import UIKit | ||
|
|
||
| /// A button with an embedded `UIActivityIndicatorView` for simulating a running activity. | ||
| public class ActivityButton: UIControl { | ||
|
|
||
| /// :nodoc: | ||
| public override var backgroundColor: UIColor? { | ||
| get { | ||
| return button.backgroundColor | ||
| } | ||
| set { | ||
| button.backgroundColor = newValue | ||
| } | ||
| } | ||
|
|
||
| /// :nodoc: | ||
| public override var isEnabled: Bool { | ||
| get { | ||
| return button.isEnabled | ||
| } | ||
| set { | ||
| button.isEnabled = newValue | ||
| } | ||
| } | ||
|
|
||
| /// :nodoc: | ||
| public override var accessibilityIdentifier: String? { | ||
| get { | ||
| return button.accessibilityIdentifier | ||
| } | ||
| set { | ||
| button.accessibilityIdentifier = newValue | ||
| } | ||
| } | ||
|
|
||
| /// The button text color. | ||
| public var textColor: UIColor? { | ||
| get { | ||
| return button.titleColor(for: .normal) | ||
| } | ||
| set { | ||
| button.setTitleColor(newValue, for: .normal) | ||
| } | ||
| } | ||
|
|
||
| /// The button title. | ||
| public var title: String? { | ||
| get { | ||
| return button.title(for: .normal) | ||
| } | ||
| set { | ||
| button.setTitle(newValue, for: .normal) | ||
| } | ||
| } | ||
|
|
||
| /// The button font. | ||
| public var font: UIFont? { | ||
| get { | ||
| return button.titleLabel?.font | ||
| } | ||
| set { | ||
| button.titleLabel?.font = newValue | ||
| } | ||
| } | ||
|
|
||
| /// The button corner radius. | ||
| public var cornerRadius: CGFloat { | ||
| get { | ||
| return button.layer.cornerRadius | ||
| } | ||
| set { | ||
| button.layer.cornerRadius = newValue | ||
| } | ||
| } | ||
|
|
||
| /// This is `true` after invoking `startActivity()`. | ||
| public var isRunningActivity: Bool { | ||
| return activity.isAnimating | ||
| } | ||
|
|
||
| private lazy var button = UIButton(type: .custom) | ||
|
|
||
| private lazy var activity = UIActivityIndicatorView(frame: .zero) | ||
|
|
||
| private var previousTitle: String? | ||
|
|
||
| /// :nodoc: | ||
| public required init?(coder aDecoder: NSCoder) { | ||
| super.init(coder: aDecoder) | ||
|
|
||
| backgroundColor = .clear | ||
|
|
||
| button.showsTouchWhenHighlighted = true // XXX: should replicate IB highlight behaviour | ||
| button.translatesAutoresizingMaskIntoConstraints = false | ||
| button.addTarget(self, action: #selector(handleButtonTouch), for: .touchUpInside) | ||
| addSubview(button) | ||
|
|
||
| activity.hidesWhenStopped = true | ||
| activity.translatesAutoresizingMaskIntoConstraints = false | ||
| addSubview(activity) | ||
|
|
||
| let top = button.topAnchor.constraint(equalTo: topAnchor) | ||
| let bottom = button.bottomAnchor.constraint(equalTo: bottomAnchor) | ||
| let left = button.leftAnchor.constraint(equalTo: leftAnchor) | ||
| let right = button.rightAnchor.constraint(equalTo: rightAnchor) | ||
| let activityX = activity.centerXAnchor.constraint(equalTo: button.centerXAnchor) | ||
| let activityY = activity.centerYAnchor.constraint(equalTo: button.centerYAnchor) | ||
| NSLayoutConstraint.activate([top, bottom, left, right, activityX, activityY]) | ||
| } | ||
|
|
||
| /** | ||
| Simulates an activity by showing a spinning activity indicator. | ||
| */ | ||
| public func startActivity() { | ||
| guard !activity.isAnimating else { | ||
| return | ||
| } | ||
| previousTitle = title | ||
| button.isUserInteractionEnabled = false | ||
| title = nil | ||
| activity.startAnimating() | ||
| } | ||
|
|
||
| /** | ||
| Hides the activity indicator previously shown with `startActivity()`. | ||
| */ | ||
| public func stopActivity() { | ||
| guard activity.isAnimating else { | ||
| return | ||
| } | ||
| activity.stopAnimating() | ||
| title = previousTitle | ||
| button.isUserInteractionEnabled = true | ||
| } | ||
|
|
||
| @objc private func handleButtonTouch() { | ||
| sendActions(for: .touchUpInside) | ||
| } | ||
| } |
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