156 lines
4.6 KiB
Swift
156 lines
4.6 KiB
Swift
//
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// Copyright (c) 2020 Open Whisper Systems. All rights reserved.
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//
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import Foundation
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@objc
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public protocol TextApprovalViewControllerDelegate: class {
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func textApproval(_ textApproval: TextApprovalViewController, didApproveMessage messageText: String)
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func textApprovalDidCancel(_ textApproval: TextApprovalViewController)
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func textApprovalCustomTitle(_ textApproval: TextApprovalViewController) -> String?
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func textApprovalRecipientsDescription(_ textApproval: TextApprovalViewController) -> String?
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func textApprovalMode(_ textApproval: TextApprovalViewController) -> ApprovalMode
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}
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// MARK: -
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@objc
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public class TextApprovalViewController: OWSViewController, UITextViewDelegate {
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@objc
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public weak var delegate: TextApprovalViewControllerDelegate?
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// MARK: - Properties
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private let initialMessageText: String
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private(set) var textView: UITextView!
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private let footerView = ApprovalFooterView()
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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.textApprovalMode(self)
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}
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// MARK: - Initializers
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@objc
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required public init(messageText: String) {
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self.initialMessageText = messageText
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super.init()
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}
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// MARK: - UIViewController
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public override var canBecomeFirstResponder: Bool {
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return true
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}
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var currentInputAcccessoryView: UIView? {
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didSet {
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if oldValue != currentInputAcccessoryView {
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textView.inputAccessoryView = currentInputAcccessoryView
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textView.reloadInputViews()
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reloadInputViews()
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}
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}
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}
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public override var inputAccessoryView: UIView? {
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return currentInputAcccessoryView
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}
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// MARK: - View Lifecycle
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override public func viewDidLoad() {
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super.viewDidLoad()
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if let title = delegate?.textApprovalCustomTitle(self) {
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self.navigationItem.title = title
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} else {
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self.navigationItem.title = NSLocalizedString("MESSAGE_APPROVAL_DIALOG_TITLE",
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comment: "Title for the 'message approval' dialog.")
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}
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self.navigationItem.leftBarButtonItem = UIBarButtonItem(barButtonSystemItem: .cancel, target: self, action: #selector(cancelPressed))
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footerView.delegate = self
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}
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private func updateSendButton() {
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guard textView.text.count > 0 else {
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currentInputAcccessoryView = nil
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return
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}
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guard let recipientsDescription = delegate?.textApprovalRecipientsDescription(self) else {
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currentInputAcccessoryView = nil
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return
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}
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footerView.setNamesText(recipientsDescription, animated: false)
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currentInputAcccessoryView = footerView
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}
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override public func viewDidAppear(_ animated: Bool) {
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super.viewDidAppear(animated)
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updateSendButton()
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textView.becomeFirstResponder()
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}
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// MARK: - Create Views
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public override func loadView() {
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self.view = UIView.container()
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self.view.backgroundColor = Theme.backgroundColor
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// Text View
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textView = OWSTextView()
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textView.delegate = self
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textView.backgroundColor = Theme.backgroundColor
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textView.textColor = Theme.primaryTextColor
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textView.font = UIFont.ows_dynamicTypeBody
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textView.text = self.initialMessageText
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textView.contentInset = UIEdgeInsets(top: 0.0, left: 0.0, bottom: 0.0, right: 0.0)
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textView.textContainerInset = UIEdgeInsets(top: 10.0, left: 10.0, bottom: 10.0, right: 10.0)
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view.addSubview(textView)
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textView.autoPinEdge(toSuperviewSafeArea: .leading)
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textView.autoPinEdge(toSuperviewSafeArea: .trailing)
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textView.autoPin(toTopLayoutGuideOf: self, withInset: 0)
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autoPinView(toBottomOfViewControllerOrKeyboard: textView, avoidNotch: true)
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}
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// MARK: - Event Handlers
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@objc func cancelPressed(sender: UIButton) {
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delegate?.textApprovalDidCancel(self)
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}
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// MARK: - UITextViewDelegate
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public func textViewDidChange(_ textView: UITextView) {
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updateSendButton()
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}
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}
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// MARK: -
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extension TextApprovalViewController: ApprovalFooterDelegate {
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public func approvalFooterDelegateDidRequestProceed(_ approvalFooterView: ApprovalFooterView) {
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delegate?.textApproval(self, didApproveMessage: self.textView.text)
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}
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public func approvalMode(_ approvalFooterView: ApprovalFooterView) -> ApprovalMode {
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return approvalMode
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}
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}
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