454 lines
16 KiB
Swift
454 lines
16 KiB
Swift
//
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// Copyright (c) 2021 Open Whisper Systems. All rights reserved.
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//
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public struct CVSelectionType: OptionSet {
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public let rawValue: UInt
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public init(rawValue: UInt) {
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self.rawValue = rawValue
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}
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public static var none: CVSelectionType { CVSelectionType(rawValue: 0) }
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public static let primaryContent = CVSelectionType(rawValue: 1 << 0)
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public static let secondaryContent = CVSelectionType(rawValue: 1 << 1)
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public static var allContent: CVSelectionType { primaryContent.union(secondaryContent) }
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}
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// MARK: -
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public struct CVSelectionItem {
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public let interactionId: String
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public let interactionType: OWSInteractionType
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public let isForwardable: Bool
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public let selectionType: CVSelectionType
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init(interactionId: String,
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interactionType: OWSInteractionType,
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isForwardable: Bool,
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selectionType: CVSelectionType) {
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self.interactionId = interactionId
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self.interactionType = interactionType
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self.isForwardable = isForwardable
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self.selectionType = selectionType
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}
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init(interaction: TSInteraction,
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selectionType: CVSelectionType) {
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self.interactionId = interaction.uniqueId
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self.interactionType = interaction.interactionType
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if let message = interaction as? TSMessage {
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self.isForwardable = (message.hasRenderableContent() &&
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!message.isViewOnceMessage &&
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!message.wasRemotelyDeleted)
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} else {
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self.isForwardable = false
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}
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self.selectionType = selectionType
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}
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}
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// MARK: -
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public protocol CVSelectionStateDelegate: AnyObject {
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func selectionStateDidChange()
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}
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// MARK: -
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// In selection mode, represents which interactions (or portions thereof) are currently selected.
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@objc
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public class CVSelectionState: NSObject {
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public weak var delegate: CVSelectionStateDelegate?
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// A map of interaction uniqueId-to-CVSelectionItem.
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//
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// For items in this map, selectionType should never be .none.
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private var itemMap = [String: CVSelectionItem]()
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public var interactionCount: Int { itemMap.count }
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public func add(interaction: TSInteraction, selectionType: CVSelectionType) {
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AssertIsOnMainThread()
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guard !selectionType.isEmpty else {
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owsFailDebug("Cannot add or remote empty selection type.")
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return
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}
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let interactionId = interaction.uniqueId
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owsAssertDebug(!isSelected(interactionId, selectionType: selectionType))
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if let oldItem = itemMap[interactionId] {
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let newItem = CVSelectionItem(interaction: interaction,
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selectionType: oldItem.selectionType.union(selectionType))
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owsAssertDebug(!newItem.selectionType.isEmpty)
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owsAssertDebug(oldItem.interactionId == newItem.interactionId)
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owsAssertDebug(oldItem.interactionType == newItem.interactionType)
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guard oldItem.selectionType != newItem.selectionType else {
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owsFailDebug("Did not change state.")
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return
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}
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itemMap[interactionId] = newItem
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} else {
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let newItem = CVSelectionItem(interaction: interaction,
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selectionType: selectionType)
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itemMap[interactionId] = newItem
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}
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delegate?.selectionStateDidChange()
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}
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public func add(itemViewModel: CVItemViewModel, selectionType: CVSelectionType) {
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add(interaction: itemViewModel.interaction, selectionType: selectionType)
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}
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public func remove(interaction: TSInteraction, selectionType: CVSelectionType) {
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AssertIsOnMainThread()
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guard !selectionType.isEmpty else {
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owsFailDebug("Cannot add or remote empty selection type.")
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return
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}
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let interactionId = interaction.uniqueId
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owsAssertDebug(isSelected(interactionId, selectionType: selectionType))
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if let oldItem = itemMap[interactionId] {
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let newItem = CVSelectionItem(interaction: interaction,
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selectionType: oldItem.selectionType.subtracting(selectionType))
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owsAssertDebug(oldItem.interactionId == newItem.interactionId)
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owsAssertDebug(oldItem.interactionType == newItem.interactionType)
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guard oldItem.selectionType != newItem.selectionType else {
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owsFailDebug("Did not change state.")
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return
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}
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if newItem.selectionType.isEmpty {
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itemMap.removeValue(forKey: interactionId)
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} else {
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itemMap[interactionId] = newItem
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}
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} else {
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owsFailDebug("Did not change state.")
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return
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}
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delegate?.selectionStateDidChange()
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}
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public func remove(itemViewModel: CVItemViewModel, selectionType: CVSelectionType) {
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remove(interaction: itemViewModel.interaction, selectionType: selectionType)
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}
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public func isSelected(_ interactionId: String, selectionType: CVSelectionType) -> Bool {
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AssertIsOnMainThread()
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guard let oldItem = itemMap[interactionId] else {
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return false
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}
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owsAssertDebug(oldItem.selectionType != .none)
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return oldItem.selectionType.contains(selectionType)
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}
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public func hasAnySelection(_ interactionId: String) -> Bool {
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AssertIsOnMainThread()
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guard let oldItem = itemMap[interactionId] else {
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return false
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}
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owsAssertDebug(oldItem.selectionType != .none)
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return true
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}
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public func hasAnySelection(interaction: TSInteraction) -> Bool {
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hasAnySelection(interaction.uniqueId)
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}
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public func reset() {
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AssertIsOnMainThread()
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guard !itemMap.isEmpty else {
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return
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}
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itemMap.removeAll()
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delegate?.selectionStateDidChange()
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}
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public var selectionItems: [CVSelectionItem] {
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AssertIsOnMainThread()
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return Array(itemMap.values)
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}
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}
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// MARK: -
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extension CVSelectionState {
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public var selectionCanBeDeleted: Bool {
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guard !itemMap.isEmpty else {
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return false
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}
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for item in itemMap.values {
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switch item.interactionType {
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case .threadDetails, .unknownThreadWarning, .defaultDisappearingMessageTimer, .typingIndicator, .unreadIndicator, .dateHeader:
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return false
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case .info, .error, .call:
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break
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case .incomingMessage, .outgoingMessage:
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break
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case .unknown:
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owsFailDebug("Unknown interaction type.")
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return false
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}
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}
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return true
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}
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public var selectionCanBeForwarded: Bool {
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guard !itemMap.isEmpty else {
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return false
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}
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let maxForwardCount: Int = 32
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guard itemMap.count <= maxForwardCount else {
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return false
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}
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for item in itemMap.values {
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guard item.isForwardable else {
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return false
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}
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switch item.interactionType {
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case .threadDetails, .unknownThreadWarning, .defaultDisappearingMessageTimer, .typingIndicator, .unreadIndicator, .dateHeader:
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return false
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case .info, .error, .call:
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return false
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case .incomingMessage, .outgoingMessage:
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break
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case .unknown:
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owsFailDebug("Unknown interaction type.")
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return false
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}
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}
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return true
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}
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}
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// MARK: -
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extension ConversationViewController {
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public func buildSelectionToolbar() -> MessageActionsToolbar {
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let deleteMessagesAction = MessageAction(
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.delete,
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accessibilityLabel: NSLocalizedString("MESSAGE_ACTION_DELETE_SELECTED_MESSAGES",
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comment: "accessibility label"),
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accessibilityIdentifier: UIView.accessibilityIdentifier(containerName: "message_action",
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name: "delete_selected_messages"),
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contextMenuTitle: "Delete Selected",
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contextMenuAttributes: [],
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block: { [weak self] _ in self?.didTapDeleteSelectedItems() }
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)
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let forwardMessagesAction = MessageAction(
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.forward,
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accessibilityLabel: NSLocalizedString("MESSAGE_ACTION_FORWARD_SELECTED_MESSAGES",
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comment: "Action sheet button title"),
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accessibilityIdentifier: UIView.accessibilityIdentifier(containerName: "message_action",
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name: "forward_selected_messages"),
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contextMenuTitle: "Forward Selected",
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contextMenuAttributes: [],
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block: { [weak self] _ in self?.didTapForwardSelectedItems() }
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)
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let toolbarMode = MessageActionsToolbar.Mode.selection(deleteMessagesAction: deleteMessagesAction,
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forwardMessagesAction: forwardMessagesAction)
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let toolbar = MessageActionsToolbar(mode: toolbarMode)
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toolbar.actionDelegate = self
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return toolbar
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}
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func didTapDeleteSelectedItems() {
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let selectionItems = self.selectionState.selectionItems
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guard !selectionItems.isEmpty else {
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owsFailDebug("Invalid selection.")
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return
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}
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let message: String
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if selectionItems.count > 1 {
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let messageFormat = NSLocalizedString("DELETE_SELECTED_MESSAGES_IN_CONVERSATION_ALERT_FORMAT",
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comment: "action sheet body. Embeds {{number of selected messages}} which will be deleted.")
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message = String(format: messageFormat, selectionItems.count)
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} else {
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message = NSLocalizedString("DELETE_SELECTED_SINGLE_MESSAGES_IN_CONVERSATION_ALERT_FORMAT",
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comment: "action sheet body")
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}
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let alert = ActionSheetController(title: nil, message: message)
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alert.addAction(OWSActionSheets.cancelAction)
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let delete = ActionSheetAction(title: CommonStrings.deleteForMeButton, style: .destructive) { [weak self] _ in
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guard let self = self else { return }
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ModalActivityIndicatorViewController.present(fromViewController: self, canCancel: false) { [weak self] modalActivityIndicator in
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guard let self = self else { return }
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DispatchQueue.main.async {
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Self.deleteSelectedItems(selectionItems: selectionItems)
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modalActivityIndicator.dismiss {
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self.uiMode = .normal
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}
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}
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}
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}
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alert.addAction(delete)
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present(alert, animated: true)
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}
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private static func deleteSelectedItems(selectionItems: [CVSelectionItem]) {
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databaseStorage.write { transaction in
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for selectionItem in selectionItems {
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Self.deleteSelectedItem(selectionItem: selectionItem, transaction: transaction)
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}
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}
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}
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private static func deleteSelectedItem(selectionItem: CVSelectionItem,
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transaction: SDSAnyWriteTransaction) {
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guard let interaction = TSInteraction.anyFetch(uniqueId: selectionItem.interactionId,
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transaction: transaction) else {
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Logger.warn("Missing interaction.")
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return
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}
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let selectionType = selectionItem.selectionType
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func tryPartialDelete() -> Bool {
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guard let message = interaction as? TSMessage else {
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owsFailDebug("Invalid interaction: \(type(of: interaction)).")
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return false
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}
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guard let componentState = CVLoader.buildStandaloneComponentState(interaction: interaction,
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transaction: transaction) else {
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owsFailDebug("Could not load componentState.")
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return false
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}
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guard componentState.hasPrimaryAndSecondaryContentForSelection else {
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owsFailDebug("Invalid componentState.")
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return false
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}
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if selectionType == .primaryContent {
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message.removeMediaAndShareAttachments(transaction: transaction)
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} else {
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message.removeBodyText(transaction: transaction)
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}
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return true
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}
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if selectionType == .allContent {
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// Fall through to delete the entire interaction.
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} else if selectionType == .primaryContent ||
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selectionType == .secondaryContent {
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// Try to partially delete the interaction.
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if tryPartialDelete() {
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return
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}
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} else {
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owsFailDebug("Invalid selectionType: \(selectionType.rawValue).")
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}
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interaction.anyRemove(transaction: transaction)
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}
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func didTapForwardSelectedItems() {
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AssertIsOnMainThread()
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let selectionItems = self.selectionState.selectionItems
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guard !selectionItems.isEmpty else {
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owsFailDebug("Invalid selection.")
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return
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}
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ForwardMessageViewController.present(forSelectionItems: selectionItems, from: self, delegate: self)
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}
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public func updateSelectionButtons() {
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guard let selectionToolbar = self.selectionToolbar else {
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owsFailDebug("Missing selectionToolbar.")
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return
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}
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selectionToolbar.updateContent()
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if let deleteButton = selectionToolbar.buttonItem(for: .delete) {
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deleteButton.isEnabled = (uiMode == .selection &&
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selectionState.selectionCanBeDeleted)
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} else {
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owsFailDebug("deleteButton was unexpectedly nil")
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return
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}
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if let forwardButton = selectionToolbar.buttonItem(for: .forward) {
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forwardButton.isEnabled = (uiMode == .selection &&
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selectionState.selectionCanBeForwarded)
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} else {
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owsFailDebug("forwardButton was unexpectedly nil")
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return
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}
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}
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}
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// MARK: - Selection
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extension ConversationViewController {
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var cancelSelectionBarButtonItem: UIBarButtonItem {
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UIBarButtonItem(barButtonSystemItem: .cancel, target: self, action: #selector(didTapCancelSelection))
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}
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var deleteAllBarButtonItem: UIBarButtonItem {
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let title = NSLocalizedString("CONVERSATION_VIEW_DELETE_ALL_MESSAGES", comment: "button text to delete all items in the current conversation")
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return UIBarButtonItem(title: title, style: .plain, target: self, action: #selector(didTapDeleteAll))
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}
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@objc
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func didTapCancelSelection() {
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uiMode = .normal
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}
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@objc
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func didTapDeleteAll() {
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let thread = self.thread
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let alert = ActionSheetController(title: nil, message: NSLocalizedString("DELETE_ALL_MESSAGES_IN_CONVERSATION_ALERT_BODY", comment: "action sheet body"))
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alert.addAction(OWSActionSheets.cancelAction)
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let deleteTitle = NSLocalizedString("DELETE_ALL_MESSAGES_IN_CONVERSATION_BUTTON", comment: "button text")
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let delete = ActionSheetAction(title: deleteTitle, style: .destructive) { [weak self] _ in
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guard let self = self else { return }
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ModalActivityIndicatorViewController.present(fromViewController: self, canCancel: false) { [weak self] modalActivityIndicator in
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guard let self = self else { return }
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self.databaseStorage.write {
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thread.removeAllThreadInteractions(transaction: $0)
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}
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DispatchQueue.main.async {
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modalActivityIndicator.dismiss { [weak self] in
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guard let self = self else { return }
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self.uiMode = .normal
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}
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}
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}
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}
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alert.addAction(delete)
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present(alert, animated: true)
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}
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}
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// MARK: -
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extension ConversationViewController: CVSelectionStateDelegate {
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public func selectionStateDidChange() {
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AssertIsOnMainThread()
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updateSelectionButtons()
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}
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}
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