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Swiftgram/submodules/ChatListUI/Sources/Node/ChatListNode.swift
Ilya Laktyushin 3fb304bd6f Various improvements
2022-05-19 21:15:31 +04:00

2378 lines
116 KiB
Swift
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import Foundation
import UIKit
import Display
import AsyncDisplayKit
import SwiftSignalKit
import TelegramCore
import TelegramPresentationData
import TelegramUIPreferences
import AccountContext
import TelegramNotices
import ContactsPeerItem
import ContextUI
import ItemListUI
import SearchUI
import ChatListSearchItemHeader
import PremiumUI
public enum ChatListNodeMode {
case chatList
case peers(filter: ChatListNodePeersFilter, isSelecting: Bool, additionalCategories: [ChatListNodeAdditionalCategory], chatListFilters: [ChatListFilter]?)
}
struct ChatListNodeListViewTransition {
let chatListView: ChatListNodeView
let deleteItems: [ListViewDeleteItem]
let insertItems: [ListViewInsertItem]
let updateItems: [ListViewUpdateItem]
let options: ListViewDeleteAndInsertOptions
let scrollToItem: ListViewScrollToItem?
let stationaryItemRange: (Int, Int)?
let adjustScrollToFirstItem: Bool
let animateCrossfade: Bool
}
final class ChatListHighlightedLocation {
let location: ChatLocation
let progress: CGFloat
init(location: ChatLocation, progress: CGFloat) {
self.location = location
self.progress = progress
}
func withUpdatedProgress(_ progress: CGFloat) -> ChatListHighlightedLocation {
return ChatListHighlightedLocation(location: location, progress: progress)
}
}
public final class ChatListNodeInteraction {
public enum PeerEntry {
case peerId(EnginePeer.Id)
case peer(EnginePeer)
}
let activateSearch: () -> Void
let peerSelected: (EnginePeer, EnginePeer?, ChatListNodeEntryPromoInfo?) -> Void
let disabledPeerSelected: (EnginePeer) -> Void
let togglePeerSelected: (EnginePeer) -> Void
let togglePeersSelection: ([PeerEntry], Bool) -> Void
let additionalCategorySelected: (Int) -> Void
let messageSelected: (EnginePeer, EngineMessage, ChatListNodeEntryPromoInfo?) -> Void
let groupSelected: (EngineChatList.Group) -> Void
let addContact: (String) -> Void
let setPeerIdWithRevealedOptions: (EnginePeer.Id?, EnginePeer.Id?) -> Void
let setItemPinned: (EngineChatList.PinnedItem.Id, Bool) -> Void
let setPeerMuted: (EnginePeer.Id, Bool) -> Void
let deletePeer: (EnginePeer.Id, Bool) -> Void
let updatePeerGrouping: (EnginePeer.Id, Bool) -> Void
let togglePeerMarkedUnread: (EnginePeer.Id, Bool) -> Void
let toggleArchivedFolderHiddenByDefault: () -> Void
let hidePsa: (EnginePeer.Id) -> Void
let activateChatPreview: (ChatListItem, ASDisplayNode, ContextGesture?) -> Void
let present: (ViewController) -> Void
public var searchTextHighightState: String?
var highlightedChatLocation: ChatListHighlightedLocation?
public init(activateSearch: @escaping () -> Void, peerSelected: @escaping (EnginePeer, EnginePeer?, ChatListNodeEntryPromoInfo?) -> Void, disabledPeerSelected: @escaping (EnginePeer) -> Void, togglePeerSelected: @escaping (EnginePeer) -> Void, togglePeersSelection: @escaping ([PeerEntry], Bool) -> Void, additionalCategorySelected: @escaping (Int) -> Void, messageSelected: @escaping (EnginePeer, EngineMessage, ChatListNodeEntryPromoInfo?) -> Void, groupSelected: @escaping (EngineChatList.Group) -> Void, addContact: @escaping (String) -> Void, setPeerIdWithRevealedOptions: @escaping (EnginePeer.Id?, EnginePeer.Id?) -> Void, setItemPinned: @escaping (EngineChatList.PinnedItem.Id, Bool) -> Void, setPeerMuted: @escaping (EnginePeer.Id, Bool) -> Void, deletePeer: @escaping (EnginePeer.Id, Bool) -> Void, updatePeerGrouping: @escaping (EnginePeer.Id, Bool) -> Void, togglePeerMarkedUnread: @escaping (EnginePeer.Id, Bool) -> Void, toggleArchivedFolderHiddenByDefault: @escaping () -> Void, hidePsa: @escaping (EnginePeer.Id) -> Void, activateChatPreview: @escaping (ChatListItem, ASDisplayNode, ContextGesture?) -> Void, present: @escaping (ViewController) -> Void) {
self.activateSearch = activateSearch
self.peerSelected = peerSelected
self.disabledPeerSelected = disabledPeerSelected
self.togglePeerSelected = togglePeerSelected
self.togglePeersSelection = togglePeersSelection
self.additionalCategorySelected = additionalCategorySelected
self.messageSelected = messageSelected
self.groupSelected = groupSelected
self.addContact = addContact
self.setPeerIdWithRevealedOptions = setPeerIdWithRevealedOptions
self.setItemPinned = setItemPinned
self.setPeerMuted = setPeerMuted
self.deletePeer = deletePeer
self.updatePeerGrouping = updatePeerGrouping
self.togglePeerMarkedUnread = togglePeerMarkedUnread
self.toggleArchivedFolderHiddenByDefault = toggleArchivedFolderHiddenByDefault
self.hidePsa = hidePsa
self.activateChatPreview = activateChatPreview
self.present = present
}
}
public final class ChatListNodePeerInputActivities {
public let activities: [EnginePeer.Id: [(EnginePeer, PeerInputActivity)]]
public init(activities: [EnginePeer.Id: [(EnginePeer, PeerInputActivity)]]) {
self.activities = activities
}
}
private func areFoundPeerArraysEqual(_ lhs: [(EnginePeer, EnginePeer?)], _ rhs: [(EnginePeer, EnginePeer?)]) -> Bool {
if lhs.count != rhs.count {
return false
}
for i in 0 ..< lhs.count {
if lhs[i].0 != rhs[i].0 || lhs[i].1 != rhs[i].1 {
return false
}
}
return true
}
public struct ChatListNodeState: Equatable {
public var presentationData: ChatListPresentationData
public var editing: Bool
public var peerIdWithRevealedOptions: EnginePeer.Id?
public var selectedPeerIds: Set<EnginePeer.Id>
public var peerInputActivities: ChatListNodePeerInputActivities?
public var pendingRemovalPeerIds: Set<EnginePeer.Id>
public var pendingClearHistoryPeerIds: Set<EnginePeer.Id>
public var archiveShouldBeTemporaryRevealed: Bool
public var selectedAdditionalCategoryIds: Set<Int>
public var hiddenPsaPeerId: EnginePeer.Id?
public var foundPeers: [(EnginePeer, EnginePeer?)]
public var selectedPeerMap: [EnginePeer.Id: EnginePeer]
public init(presentationData: ChatListPresentationData, editing: Bool, peerIdWithRevealedOptions: EnginePeer.Id?, selectedPeerIds: Set<EnginePeer.Id>, foundPeers: [(EnginePeer, EnginePeer?)], selectedPeerMap: [EnginePeer.Id: EnginePeer], selectedAdditionalCategoryIds: Set<Int>, peerInputActivities: ChatListNodePeerInputActivities?, pendingRemovalPeerIds: Set<EnginePeer.Id>, pendingClearHistoryPeerIds: Set<EnginePeer.Id>, archiveShouldBeTemporaryRevealed: Bool, hiddenPsaPeerId: EnginePeer.Id?) {
self.presentationData = presentationData
self.editing = editing
self.peerIdWithRevealedOptions = peerIdWithRevealedOptions
self.selectedPeerIds = selectedPeerIds
self.selectedAdditionalCategoryIds = selectedAdditionalCategoryIds
self.foundPeers = foundPeers
self.selectedPeerMap = selectedPeerMap
self.peerInputActivities = peerInputActivities
self.pendingRemovalPeerIds = pendingRemovalPeerIds
self.pendingClearHistoryPeerIds = pendingClearHistoryPeerIds
self.archiveShouldBeTemporaryRevealed = archiveShouldBeTemporaryRevealed
self.hiddenPsaPeerId = hiddenPsaPeerId
}
public static func ==(lhs: ChatListNodeState, rhs: ChatListNodeState) -> Bool {
if lhs.presentationData !== rhs.presentationData {
return false
}
if lhs.editing != rhs.editing {
return false
}
if lhs.peerIdWithRevealedOptions != rhs.peerIdWithRevealedOptions {
return false
}
if lhs.selectedPeerIds != rhs.selectedPeerIds {
return false
}
if areFoundPeerArraysEqual(lhs.foundPeers, rhs.foundPeers) {
return false
}
if lhs.selectedPeerMap != rhs.selectedPeerMap {
return false
}
if lhs.selectedAdditionalCategoryIds != rhs.selectedAdditionalCategoryIds {
return false
}
if lhs.peerInputActivities !== rhs.peerInputActivities {
return false
}
if lhs.pendingRemovalPeerIds != rhs.pendingRemovalPeerIds {
return false
}
if lhs.pendingClearHistoryPeerIds != rhs.pendingClearHistoryPeerIds {
return false
}
if lhs.archiveShouldBeTemporaryRevealed != rhs.archiveShouldBeTemporaryRevealed {
return false
}
if lhs.hiddenPsaPeerId != rhs.hiddenPsaPeerId {
return false
}
return true
}
}
private func mappedInsertEntries(context: AccountContext, nodeInteraction: ChatListNodeInteraction, peerGroupId: EngineChatList.Group, filterData: ChatListItemFilterData?, mode: ChatListNodeMode, entries: [ChatListNodeViewTransitionInsertEntry]) -> [ListViewInsertItem] {
return entries.map { entry -> ListViewInsertItem in
switch entry.entry {
case .HeaderEntry:
return ListViewInsertItem(index: entry.index, previousIndex: entry.previousIndex, item: ChatListEmptyHeaderItem(), directionHint: entry.directionHint)
case let .AdditionalCategory(_, id, title, image, appearance, selected, presentationData):
var header: ChatListSearchItemHeader?
if case .action = appearance {
// TODO: hack, generalize
header = ChatListSearchItemHeader(type: .orImportIntoAnExistingGroup, theme: presentationData.theme, strings: presentationData.strings, actionTitle: nil, action: nil)
}
return ListViewInsertItem(index: entry.index, previousIndex: entry.previousIndex, item: ChatListAdditionalCategoryItem(
presentationData: ItemListPresentationData(theme: presentationData.theme, fontSize: presentationData.fontSize, strings: presentationData.strings),
context: context,
title: title,
image: image,
appearance: appearance,
isSelected: selected,
header: header,
action: {
nodeInteraction.additionalCategorySelected(id)
}
), directionHint: entry.directionHint)
case let .PeerEntry(index, presentationData, messages, combinedReadState, isRemovedFromTotalUnreadCount, draftState, peer, presence, hasUnseenMentions, hasUnseenReactions, editing, hasActiveRevealControls, selected, inputActivities, promoInfo, hasFailedMessages, isContact):
switch mode {
case .chatList:
return ListViewInsertItem(index: entry.index, previousIndex: entry.previousIndex, item: ChatListItem(
presentationData: presentationData,
context: context,
peerGroupId: peerGroupId,
filterData: filterData,
index: index,
content: .peer(
messages: messages,
peer: peer,
combinedReadState: combinedReadState,
isRemovedFromTotalUnreadCount: isRemovedFromTotalUnreadCount,
presence: presence,
hasUnseenMentions: hasUnseenMentions,
hasUnseenReactions: hasUnseenReactions,
draftState: draftState,
inputActivities: inputActivities,
promoInfo: promoInfo,
ignoreUnreadBadge: false,
displayAsMessage: false,
hasFailedMessages: hasFailedMessages
),
editing: editing,
hasActiveRevealControls: hasActiveRevealControls,
selected: selected,
header: nil,
enableContextActions: true,
hiddenOffset: false,
interaction: nodeInteraction
), directionHint: entry.directionHint)
case let .peers(filter, isSelecting, _, filters):
let itemPeer = peer.chatMainPeer
var chatPeer: EnginePeer?
if let peer = peer.peers[peer.peerId] {
chatPeer = peer
}
var enabled = true
if filter.contains(.onlyWriteable) {
if let peer = peer.peers[peer.peerId] {
if !canSendMessagesToPeer(peer._asPeer()) {
enabled = false
}
} else {
enabled = false
}
}
if filter.contains(.onlyPrivateChats) {
if let peer = peer.peers[peer.peerId] {
switch peer {
case .user, .secretChat:
break
default:
enabled = false
}
} else {
enabled = false
}
}
if filter.contains(.onlyGroups) {
if let peer = peer.peers[peer.peerId] {
if case .legacyGroup = peer {
} else if case let .channel(peer) = peer, case .group = peer.info {
} else {
enabled = false
}
} else {
enabled = false
}
}
if filter.contains(.onlyManageable) {
if let peer = peer.peers[peer.peerId] {
var canManage = false
if case let .legacyGroup(peer) = peer {
switch peer.role {
case .creator, .admin:
canManage = true
default:
break
}
}
if canManage {
} else if case let .channel(peer) = peer, case .group = peer.info, peer.hasPermission(.inviteMembers) {
} else {
enabled = false
}
} else {
enabled = false
}
}
if filter.contains(.excludeChannels) {
if let peer = peer.peers[peer.peerId] {
if case let .channel(peer) = peer, case .broadcast = peer.info {
enabled = false
}
}
}
var header: ChatListSearchItemHeader?
switch mode {
case let .peers(_, _, additionalCategories, _):
if !additionalCategories.isEmpty {
let headerType: ChatListSearchItemHeaderType
if case .action = additionalCategories[0].appearance {
// TODO: hack, generalize
headerType = .orImportIntoAnExistingGroup
} else {
headerType = .chats
}
header = ChatListSearchItemHeader(type: headerType, theme: presentationData.theme, strings: presentationData.strings, actionTitle: nil, action: nil)
}
default:
break
}
var status: ContactsPeerItemStatus = .none
if isSelecting, let itemPeer = itemPeer {
if let (string, multiline) = statusStringForPeerType(accountPeerId: context.account.peerId, strings: presentationData.strings, peer: itemPeer, isMuted: isRemovedFromTotalUnreadCount, isUnread: combinedReadState?.isUnread ?? false, isContact: isContact, hasUnseenMentions: hasUnseenMentions, chatListFilters: filters) {
status = .custom(string: string, multiline: multiline)
} else {
status = .none
}
}
return ListViewInsertItem(index: entry.index, previousIndex: entry.previousIndex, item: ContactsPeerItem(
presentationData: ItemListPresentationData(theme: presentationData.theme, fontSize: presentationData.fontSize, strings: presentationData.strings),
sortOrder: presentationData.nameSortOrder,
displayOrder: presentationData.nameDisplayOrder,
context: context,
peerMode: .generalSearch,
peer: .peer(peer: itemPeer, chatPeer: chatPeer),
status: status,
enabled: enabled,
selection: editing ? .selectable(selected: selected) : .none,
editing: ContactsPeerItemEditing(editable: false, editing: false, revealed: false),
index: nil,
header: header,
action: { _ in
if let chatPeer = chatPeer {
if editing {
nodeInteraction.togglePeerSelected(chatPeer)
} else {
nodeInteraction.peerSelected(chatPeer, nil, nil)
}
}
}, disabledAction: { _ in
if let chatPeer = chatPeer {
nodeInteraction.disabledPeerSelected(chatPeer)
}
}
), directionHint: entry.directionHint)
}
case let .HoleEntry(_, theme):
return ListViewInsertItem(index: entry.index, previousIndex: entry.previousIndex, item: ChatListHoleItem(theme: theme), directionHint: entry.directionHint)
case let .GroupReferenceEntry(index, presentationData, groupId, peers, message, editing, unreadCount, revealed, hiddenByDefault):
return ListViewInsertItem(index: entry.index, previousIndex: entry.previousIndex, item: ChatListItem(
presentationData: presentationData,
context: context,
peerGroupId: peerGroupId,
filterData: filterData,
index: index,
content: .groupReference(
groupId: groupId,
peers: peers,
message: message,
unreadCount: unreadCount,
hiddenByDefault: hiddenByDefault
),
editing: editing,
hasActiveRevealControls: false,
selected: false,
header: nil,
enableContextActions: true,
hiddenOffset: hiddenByDefault && !revealed,
interaction: nodeInteraction
), directionHint: entry.directionHint)
case let .ArchiveIntro(presentationData):
return ListViewInsertItem(index: entry.index, previousIndex: entry.previousIndex, item: ChatListArchiveInfoItem(theme: presentationData.theme, strings: presentationData.strings), directionHint: entry.directionHint)
}
}
}
private func mappedUpdateEntries(context: AccountContext, nodeInteraction: ChatListNodeInteraction, peerGroupId: EngineChatList.Group, filterData: ChatListItemFilterData?, mode: ChatListNodeMode, entries: [ChatListNodeViewTransitionUpdateEntry]) -> [ListViewUpdateItem] {
return entries.map { entry -> ListViewUpdateItem in
switch entry.entry {
case let .PeerEntry(index, presentationData, messages, combinedReadState, isRemovedFromTotalUnreadCount, draftState, peer, presence, hasUnseenMentions, hasUnseenReactions, editing, hasActiveRevealControls, selected, inputActivities, promoInfo, hasFailedMessages, isContact):
switch mode {
case .chatList:
return ListViewUpdateItem(index: entry.index, previousIndex: entry.previousIndex, item: ChatListItem(
presentationData: presentationData,
context: context,
peerGroupId: peerGroupId,
filterData: filterData,
index: index,
content: .peer(
messages: messages,
peer: peer,
combinedReadState: combinedReadState,
isRemovedFromTotalUnreadCount: isRemovedFromTotalUnreadCount,
presence: presence,
hasUnseenMentions: hasUnseenMentions,
hasUnseenReactions: hasUnseenReactions,
draftState: draftState,
inputActivities: inputActivities,
promoInfo: promoInfo,
ignoreUnreadBadge: false,
displayAsMessage: false,
hasFailedMessages: hasFailedMessages
),
editing: editing,
hasActiveRevealControls: hasActiveRevealControls,
selected: selected,
header: nil,
enableContextActions: true,
hiddenOffset: false,
interaction: nodeInteraction
), directionHint: entry.directionHint)
case let .peers(filter, isSelecting, _, filters):
let itemPeer = peer.chatMainPeer
var chatPeer: EnginePeer?
if let peer = peer.peers[peer.peerId] {
chatPeer = peer
}
var enabled = true
if filter.contains(.onlyWriteable) {
if let peer = peer.peers[peer.peerId] {
if !canSendMessagesToPeer(peer._asPeer()) {
enabled = false
}
} else {
enabled = false
}
}
if filter.contains(.excludeChannels) {
if case let .channel(peer) = peer.chatMainPeer, case .broadcast = peer.info {
enabled = false
}
}
var header: ChatListSearchItemHeader?
switch mode {
case let .peers(_, _, additionalCategories, _):
if !additionalCategories.isEmpty {
let headerType: ChatListSearchItemHeaderType
if case .action = additionalCategories[0].appearance {
// TODO: hack, generalize
headerType = .orImportIntoAnExistingGroup
} else {
headerType = .chats
}
header = ChatListSearchItemHeader(type: headerType, theme: presentationData.theme, strings: presentationData.strings, actionTitle: nil, action: nil)
}
default:
break
}
var status: ContactsPeerItemStatus = .none
if isSelecting, let itemPeer = itemPeer {
if let (string, multiline) = statusStringForPeerType(accountPeerId: context.account.peerId, strings: presentationData.strings, peer: itemPeer, isMuted: isRemovedFromTotalUnreadCount, isUnread: combinedReadState?.isUnread ?? false, isContact: isContact, hasUnseenMentions: hasUnseenMentions, chatListFilters: filters) {
status = .custom(string: string, multiline: multiline)
} else {
status = .none
}
}
return ListViewUpdateItem(index: entry.index, previousIndex: entry.previousIndex, item: ContactsPeerItem(
presentationData: ItemListPresentationData(theme: presentationData.theme, fontSize: presentationData.fontSize, strings: presentationData.strings),
sortOrder: presentationData.nameSortOrder,
displayOrder: presentationData.nameDisplayOrder,
context: context,
peerMode: .generalSearch,
peer: .peer(peer: itemPeer, chatPeer: chatPeer),
status: status,
enabled: enabled,
selection: editing ? .selectable(selected: selected) : .none,
editing: ContactsPeerItemEditing(editable: false, editing: false, revealed: false),
index: nil,
header: header,
action: { _ in
if let chatPeer = chatPeer {
if editing {
nodeInteraction.togglePeerSelected(chatPeer)
} else {
nodeInteraction.peerSelected(chatPeer, nil, nil)
}
}
}, disabledAction: { _ in
if let chatPeer = chatPeer {
nodeInteraction.disabledPeerSelected(chatPeer)
}
}
), directionHint: entry.directionHint)
}
case let .HoleEntry(_, theme):
return ListViewUpdateItem(index: entry.index, previousIndex: entry.previousIndex, item: ChatListHoleItem(theme: theme), directionHint: entry.directionHint)
case let .GroupReferenceEntry(index, presentationData, groupId, peers, message, editing, unreadCount, revealed, hiddenByDefault):
return ListViewUpdateItem(index: entry.index, previousIndex: entry.previousIndex, item: ChatListItem(
presentationData: presentationData,
context: context,
peerGroupId: peerGroupId,
filterData: filterData,
index: index,
content: .groupReference(
groupId: groupId,
peers: peers,
message: message,
unreadCount: unreadCount,
hiddenByDefault: hiddenByDefault
),
editing: editing,
hasActiveRevealControls: false,
selected: false,
header: nil,
enableContextActions: true,
hiddenOffset: hiddenByDefault && !revealed,
interaction: nodeInteraction
), directionHint: entry.directionHint)
case let .ArchiveIntro(presentationData):
return ListViewUpdateItem(index: entry.index, previousIndex: entry.previousIndex, item: ChatListArchiveInfoItem(theme: presentationData.theme, strings: presentationData.strings), directionHint: entry.directionHint)
case .HeaderEntry:
return ListViewUpdateItem(index: entry.index, previousIndex: entry.previousIndex, item: ChatListEmptyHeaderItem(), directionHint: entry.directionHint)
case let .AdditionalCategory(index: _, id, title, image, appearance, selected, presentationData):
var header: ChatListSearchItemHeader?
if case .action = appearance {
// TODO: hack, generalize
header = ChatListSearchItemHeader(type: .orImportIntoAnExistingGroup, theme: presentationData.theme, strings: presentationData.strings, actionTitle: nil, action: nil)
}
return ListViewUpdateItem(index: entry.index, previousIndex: entry.previousIndex, item: ChatListAdditionalCategoryItem(
presentationData: ItemListPresentationData(theme: presentationData.theme, fontSize: presentationData.fontSize, strings: presentationData.strings),
context: context,
title: title,
image: image,
appearance: appearance,
isSelected: selected,
header: header,
action: {
nodeInteraction.additionalCategorySelected(id)
}
), directionHint: entry.directionHint)
}
}
}
private func mappedChatListNodeViewListTransition(context: AccountContext, nodeInteraction: ChatListNodeInteraction, peerGroupId: EngineChatList.Group, filterData: ChatListItemFilterData?, mode: ChatListNodeMode, transition: ChatListNodeViewTransition) -> ChatListNodeListViewTransition {
return ChatListNodeListViewTransition(chatListView: transition.chatListView, deleteItems: transition.deleteItems, insertItems: mappedInsertEntries(context: context, nodeInteraction: nodeInteraction, peerGroupId: peerGroupId, filterData: filterData, mode: mode, entries: transition.insertEntries), updateItems: mappedUpdateEntries(context: context, nodeInteraction: nodeInteraction, peerGroupId: peerGroupId, filterData: filterData, mode: mode, entries: transition.updateEntries), options: transition.options, scrollToItem: transition.scrollToItem, stationaryItemRange: transition.stationaryItemRange, adjustScrollToFirstItem: transition.adjustScrollToFirstItem, animateCrossfade: transition.animateCrossfade)
}
private final class ChatListOpaqueTransactionState {
let chatListView: ChatListNodeView
init(chatListView: ChatListNodeView) {
self.chatListView = chatListView
}
}
public enum ChatListSelectionOption {
case previous(unread: Bool)
case next(unread: Bool)
case peerId(EnginePeer.Id)
case index(Int)
}
public enum ChatListGlobalScrollOption {
case none
case top
case unread
}
public enum ChatListNodeScrollPosition {
case auto
case autoUp
case top
}
public enum ChatListNodeEmptyState: Equatable {
case notEmpty(containsChats: Bool)
case empty(isLoading: Bool, hasArchiveInfo: Bool)
}
public final class ChatListNode: ListView {
private let fillPreloadItems: Bool
private let context: AccountContext
private let groupId: EngineChatList.Group
private let mode: ChatListNodeMode
private let _ready = ValuePromise<Bool>()
private var didSetReady = false
public var ready: Signal<Bool, NoError> {
return _ready.get()
}
private let _contentsReady = ValuePromise<Bool>()
private var didSetContentsReady = false
public var contentsReady: Signal<Bool, NoError> {
return _contentsReady.get()
}
public var peerSelected: ((EnginePeer, Bool, Bool, ChatListNodeEntryPromoInfo?) -> Void)?
public var disabledPeerSelected: ((EnginePeer) -> Void)?
public var additionalCategorySelected: ((Int) -> Void)?
public var groupSelected: ((EngineChatList.Group) -> Void)?
public var addContact: ((String) -> Void)?
public var activateSearch: (() -> Void)?
public var deletePeerChat: ((EnginePeer.Id, Bool) -> Void)?
public var updatePeerGrouping: ((EnginePeer.Id, Bool) -> Void)?
public var presentAlert: ((String) -> Void)?
public var present: ((ViewController) -> Void)?
public var push: ((ViewController) -> Void)?
public var toggleArchivedFolderHiddenByDefault: (() -> Void)?
public var hidePsa: ((EnginePeer.Id) -> Void)?
public var activateChatPreview: ((ChatListItem, ASDisplayNode, ContextGesture?) -> Void)?
private var theme: PresentationTheme
private let viewProcessingQueue = Queue()
private var chatListView: ChatListNodeView?
var entriesCount: Int {
if let chatListView = self.chatListView {
return chatListView.filteredEntries.count
} else {
return 0
}
}
private var interaction: ChatListNodeInteraction?
private var dequeuedInitialTransitionOnLayout = false
private var enqueuedTransition: (ChatListNodeListViewTransition, () -> Void)?
public private(set) var currentState: ChatListNodeState
private let statePromise: ValuePromise<ChatListNodeState>
public var state: Signal<ChatListNodeState, NoError> {
return self.statePromise.get()
}
private var currentLocation: ChatListNodeLocation?
private(set) var chatListFilter: ChatListFilter? {
didSet {
self.chatListFilterValue.set(.single(self.chatListFilter))
if self.chatListFilter != oldValue {
self.setChatListLocation(.initial(count: 50, filter: self.chatListFilter))
}
}
}
private let updatedFilterDisposable = MetaDisposable()
private let chatListFilterValue = Promise<ChatListFilter?>()
var chatListFilterSignal: Signal<ChatListFilter?, NoError> {
return self.chatListFilterValue.get()
}
private var hasUpdatedAppliedChatListFilterValueOnce = false
private var currentAppliedChatListFilterValue: ChatListFilter?
private let appliedChatListFilterValue = Promise<ChatListFilter?>()
var appliedChatListFilterSignal: Signal<ChatListFilter?, NoError> {
return self.appliedChatListFilterValue.get()
}
private let chatListLocation = ValuePromise<ChatListNodeLocation>()
private let chatListDisposable = MetaDisposable()
private var activityStatusesDisposable: Disposable?
private let scrollToTopOptionPromise = Promise<ChatListGlobalScrollOption>(.none)
public var scrollToTopOption: Signal<ChatListGlobalScrollOption, NoError> {
return self.scrollToTopOptionPromise.get()
}
private let scrolledAtTop = ValuePromise<Bool>(true)
private var scrolledAtTopValue: Bool = true {
didSet {
if self.scrolledAtTopValue != oldValue {
self.scrolledAtTop.set(self.scrolledAtTopValue)
}
}
}
public var contentOffsetChanged: ((ListViewVisibleContentOffset) -> Void)?
public var contentScrollingEnded: ((ListView) -> Bool)?
var isEmptyUpdated: ((ChatListNodeEmptyState, Bool, ContainedViewLayoutTransition) -> Void)?
private var currentIsEmptyState: ChatListNodeEmptyState?
public var addedVisibleChatsWithPeerIds: (([EnginePeer.Id]) -> Void)?
private let currentRemovingPeerId = Atomic<EnginePeer.Id?>(value: nil)
public func setCurrentRemovingPeerId(_ peerId: EnginePeer.Id?) {
let _ = self.currentRemovingPeerId.swap(peerId)
}
private var hapticFeedback: HapticFeedback?
let preloadItems = Promise<[ChatHistoryPreloadItem]>([])
var didBeginSelectingChats: (() -> Void)?
public var selectionCountChanged: ((Int) -> Void)?
var isSelectionGestureEnabled = true
public init(context: AccountContext, groupId: EngineChatList.Group, chatListFilter: ChatListFilter? = nil, previewing: Bool, fillPreloadItems: Bool, mode: ChatListNodeMode, theme: PresentationTheme, fontSize: PresentationFontSize, strings: PresentationStrings, dateTimeFormat: PresentationDateTimeFormat, nameSortOrder: PresentationPersonNameOrder, nameDisplayOrder: PresentationPersonNameOrder, disableAnimations: Bool) {
self.context = context
self.groupId = groupId
self.chatListFilter = chatListFilter
self.chatListFilterValue.set(.single(chatListFilter))
self.fillPreloadItems = fillPreloadItems
self.mode = mode
var isSelecting = false
if case .peers(_, true, _, _) = mode {
isSelecting = true
}
self.currentState = ChatListNodeState(presentationData: ChatListPresentationData(theme: theme, fontSize: fontSize, strings: strings, dateTimeFormat: dateTimeFormat, nameSortOrder: nameSortOrder, nameDisplayOrder: nameDisplayOrder, disableAnimations: disableAnimations), editing: isSelecting, peerIdWithRevealedOptions: nil, selectedPeerIds: Set(), foundPeers: [], selectedPeerMap: [:], selectedAdditionalCategoryIds: Set(), peerInputActivities: nil, pendingRemovalPeerIds: Set(), pendingClearHistoryPeerIds: Set(), archiveShouldBeTemporaryRevealed: false, hiddenPsaPeerId: nil)
self.statePromise = ValuePromise(self.currentState, ignoreRepeated: true)
self.theme = theme
super.init()
self.verticalScrollIndicatorColor = theme.list.scrollIndicatorColor
self.verticalScrollIndicatorFollowsOverscroll = true
self.keepMinimalScrollHeightWithTopInset = navigationBarSearchContentHeight
let nodeInteraction = ChatListNodeInteraction(activateSearch: { [weak self] in
if let strongSelf = self, let activateSearch = strongSelf.activateSearch {
activateSearch()
}
}, peerSelected: { [weak self] peer, _, promoInfo in
if let strongSelf = self, let peerSelected = strongSelf.peerSelected {
peerSelected(peer, true, true, promoInfo)
}
}, disabledPeerSelected: { [weak self] peer in
if let strongSelf = self, let disabledPeerSelected = strongSelf.disabledPeerSelected {
disabledPeerSelected(peer)
}
}, togglePeerSelected: { [weak self] peer in
var didBeginSelecting = false
var count = 0
self?.updateState { state in
var state = state
if state.selectedPeerIds.contains(peer.id) {
state.selectedPeerIds.remove(peer.id)
} else {
if state.selectedPeerIds.count < 100 {
if state.selectedPeerIds.isEmpty {
didBeginSelecting = true
}
state.selectedPeerIds.insert(peer.id)
state.selectedPeerMap[peer.id] = peer
}
}
count = state.selectedPeerIds.count
return state
}
self?.selectionCountChanged?(count)
if didBeginSelecting {
self?.didBeginSelectingChats?()
}
}, togglePeersSelection: { [weak self] peers, selected in
self?.updateState { state in
var state = state
if selected {
for peerEntry in peers {
switch peerEntry {
case let .peer(peer):
state.selectedPeerIds.insert(peer.id)
state.selectedPeerMap[peer.id] = peer
case let .peerId(peerId):
state.selectedPeerIds.insert(peerId)
}
}
} else {
for peerEntry in peers {
switch peerEntry {
case let .peer(peer):
state.selectedPeerIds.remove(peer.id)
case let .peerId(peerId):
state.selectedPeerIds.remove(peerId)
}
}
}
return state
}
if selected && !peers.isEmpty {
self?.didBeginSelectingChats?()
}
}, additionalCategorySelected: { [weak self] id in
self?.additionalCategorySelected?(id)
}, messageSelected: { [weak self] peer, message, promoInfo in
if let strongSelf = self, let peerSelected = strongSelf.peerSelected {
var activateInput = false
for media in message.media {
if let action = media as? TelegramMediaAction {
switch action.action {
case .peerJoined, .groupCreated, .channelMigratedFromGroup, .historyCleared:
activateInput = true
default:
break
}
}
}
peerSelected(peer, true, activateInput, promoInfo)
}
}, groupSelected: { [weak self] groupId in
if let strongSelf = self, let groupSelected = strongSelf.groupSelected {
groupSelected(groupId)
}
}, addContact: { _ in
}, setPeerIdWithRevealedOptions: { [weak self] peerId, fromPeerId in
if let strongSelf = self {
strongSelf.updateState { state in
if (peerId == nil && fromPeerId == state.peerIdWithRevealedOptions) || (peerId != nil && fromPeerId == nil) || (peerId == nil && fromPeerId == nil) {
var state = state
state.peerIdWithRevealedOptions = peerId
return state
} else {
return state
}
}
}
}, setItemPinned: { [weak self] itemId, _ in
let location: TogglePeerChatPinnedLocation
if let chatListFilter = chatListFilter {
location = .filter(chatListFilter.id)
} else {
location = .group(groupId._asGroup())
}
let _ = (context.engine.peers.toggleItemPinned(location: location, itemId: itemId)
|> deliverOnMainQueue).start(next: { result in
if let strongSelf = self {
switch result {
case .done:
break
case let .limitExceeded(count, _):
var replaceImpl: ((ViewController) -> Void)?
let controller = PremiumLimitScreen(context: context, subject: .pins, count: Int32(count), action: {
let premiumScreen = PremiumIntroScreen(context: context)
replaceImpl?(premiumScreen)
})
replaceImpl = { [weak controller] c in
controller?.replace(with: c)
}
strongSelf.push?(controller)
}
}
})
}, setPeerMuted: { [weak self] peerId, _ in
guard let strongSelf = self else {
return
}
strongSelf.setCurrentRemovingPeerId(peerId)
let _ = (context.engine.peers.togglePeerMuted(peerId: peerId)
|> deliverOnMainQueue).start(completed: {
self?.updateState { state in
var state = state
state.peerIdWithRevealedOptions = nil
return state
}
self?.setCurrentRemovingPeerId(nil)
})
}, deletePeer: { [weak self] peerId, joined in
self?.deletePeerChat?(peerId, joined)
}, updatePeerGrouping: { [weak self] peerId, group in
self?.updatePeerGrouping?(peerId, group)
}, togglePeerMarkedUnread: { [weak self, weak context] peerId, animated in
guard let context = context else {
return
}
self?.setCurrentRemovingPeerId(peerId)
let _ = (togglePeerUnreadMarkInteractively(postbox: context.account.postbox, viewTracker: context.account.viewTracker, peerId: peerId)
|> deliverOnMainQueue).start(completed: {
self?.updateState { state in
var state = state
state.peerIdWithRevealedOptions = nil
return state
}
self?.setCurrentRemovingPeerId(nil)
})
}, toggleArchivedFolderHiddenByDefault: { [weak self] in
self?.toggleArchivedFolderHiddenByDefault?()
}, hidePsa: { [weak self] id in
self?.hidePsa?(id)
}, activateChatPreview: { [weak self] item, node, gesture in
guard let strongSelf = self else {
return
}
if let activateChatPreview = strongSelf.activateChatPreview {
activateChatPreview(item, node, gesture)
} else {
gesture?.cancel()
}
}, present: { [weak self] c in
self?.present?(c)
})
let viewProcessingQueue = self.viewProcessingQueue
let chatListViewUpdate = self.chatListLocation.get()
|> distinctUntilChanged
|> mapToSignal { location -> Signal<(ChatListNodeViewUpdate, ChatListFilter?), NoError> in
return chatListViewForLocation(groupId: groupId._asGroup(), location: location, account: context.account)
|> map { update in
return (update, location.filter)
}
}
let previousState = Atomic<ChatListNodeState>(value: self.currentState)
let previousView = Atomic<ChatListNodeView?>(value: nil)
let previousHideArchivedFolderByDefault = Atomic<Bool?>(value: nil)
let currentRemovingPeerId = self.currentRemovingPeerId
let savedMessagesPeer: Signal<EnginePeer?, NoError>
if case let .peers(filter, _, _, _) = mode, filter.contains(.onlyWriteable) {
savedMessagesPeer = context.account.postbox.loadedPeerWithId(context.account.peerId)
|> map(Optional.init)
|> map { peer in
return peer.flatMap(EnginePeer.init)
}
} else {
savedMessagesPeer = .single(nil)
}
let hideArchivedFolderByDefault = context.account.postbox.preferencesView(keys: [ApplicationSpecificPreferencesKeys.chatArchiveSettings])
|> map { view -> Bool in
let settings: ChatArchiveSettings = view.values[ApplicationSpecificPreferencesKeys.chatArchiveSettings]?.get(ChatArchiveSettings.self) ?? .default
return settings.isHiddenByDefault
}
|> distinctUntilChanged
let displayArchiveIntro: Signal<Bool, NoError>
if case .archive = groupId {
displayArchiveIntro = context.sharedContext.accountManager.noticeEntry(key: ApplicationSpecificNotice.archiveIntroDismissedKey())
|> map { entry -> Bool in
if let value = entry.value?.get(ApplicationSpecificVariantNotice.self) {
return !value.value
} else {
return true
}
}
|> take(1)
|> afterNext { value in
Queue.mainQueue().async {
if value {
let _ = (context.sharedContext.accountManager.transaction { transaction -> Void in
ApplicationSpecificNotice.setArchiveIntroDismissed(transaction: transaction, value: true)
}).start()
}
}
}
} else {
displayArchiveIntro = .single(false)
}
let currentPeerId: EnginePeer.Id = context.account.peerId
let chatListNodeViewTransition = combineLatest(queue: viewProcessingQueue, hideArchivedFolderByDefault, displayArchiveIntro, savedMessagesPeer, chatListViewUpdate, self.statePromise.get())
|> mapToQueue { (hideArchivedFolderByDefault, displayArchiveIntro, savedMessagesPeer, updateAndFilter, state) -> Signal<ChatListNodeListViewTransition, NoError> in
let (update, filter) = updateAndFilter
let previousHideArchivedFolderByDefaultValue = previousHideArchivedFolderByDefault.swap(hideArchivedFolderByDefault)
let (rawEntries, isLoading) = chatListNodeEntriesForView(EngineChatList(update.view), state: state, savedMessagesPeer: savedMessagesPeer, foundPeers: state.foundPeers, hideArchivedFolderByDefault: hideArchivedFolderByDefault, displayArchiveIntro: displayArchiveIntro, mode: mode)
let entries = rawEntries.filter { entry in
switch entry {
case let .PeerEntry(_, _, _, _, _, _, peer, _, _, _, _, _, _, _, _, _, _):
switch mode {
case .chatList:
return true
case let .peers(filter, _, _, _):
guard !filter.contains(.excludeSavedMessages) || peer.peerId != currentPeerId else { return false }
guard !filter.contains(.excludeSavedMessages) || !peer.peerId.isReplies else { return false }
guard !filter.contains(.excludeSecretChats) || peer.peerId.namespace != Namespaces.Peer.SecretChat else { return false }
guard !filter.contains(.onlyPrivateChats) || peer.peerId.namespace == Namespaces.Peer.CloudUser else { return false }
if filter.contains(.onlyGroupsAndChannels) {
if case .channel = peer.chatMainPeer {
} else if case .legacyGroup = peer.chatMainPeer {
} else {
return false
}
} else {
if filter.contains(.onlyGroups) {
var isGroup: Bool = false
if case let .channel(peer) = peer.chatMainPeer, case .group = peer.info {
isGroup = true
} else if peer.peerId.namespace == Namespaces.Peer.CloudGroup {
isGroup = true
}
if !isGroup {
return false
}
}
if filter.contains(.onlyChannels) {
if case let .channel(peer) = peer.chatMainPeer, case .broadcast = peer.info {
} else {
return false
}
}
}
if filter.contains(.excludeChannels) {
if case let .channel(peer) = peer.chatMainPeer, case .broadcast = peer.info {
}
}
if filter.contains(.onlyWriteable) && filter.contains(.excludeDisabled) {
if let peer = peer.peers[peer.peerId] {
if !canSendMessagesToPeer(peer._asPeer()) {
return false
}
} else {
return false
}
}
if filter.contains(.onlyManageable) && filter.contains(.excludeDisabled) {
if let peer = peer.peers[peer.peerId] {
var canManage = false
if case let .legacyGroup(peer) = peer {
switch peer.role {
case .creator, .admin:
canManage = true
default:
break
}
}
if canManage {
} else if case let .channel(peer) = peer, case .group = peer.info, peer.hasPermission(.inviteMembers) {
} else {
return false
}
} else {
return false
}
}
return true
}
default:
return true
}
}
let processedView = ChatListNodeView(originalView: update.view, filteredEntries: entries, isLoading: isLoading, filter: filter)
let previousView = previousView.swap(processedView)
let previousState = previousState.swap(state)
let reason: ChatListNodeViewTransitionReason
var prepareOnMainQueue = false
var previousWasEmptyOrSingleHole = false
if let previous = previousView {
if previous.filteredEntries.count == 1 {
if case .HoleEntry = previous.filteredEntries[0] {
previousWasEmptyOrSingleHole = true
}
} else if previous.filteredEntries.isEmpty && previous.isLoading {
previousWasEmptyOrSingleHole = true
}
} else {
previousWasEmptyOrSingleHole = true
}
var updatedScrollPosition = update.scrollPosition
if previousWasEmptyOrSingleHole {
reason = .initial
if previousView == nil {
prepareOnMainQueue = true
}
} else {
if previousView?.originalView === update.view {
reason = .interactiveChanges
updatedScrollPosition = nil
} else {
switch update.type {
case .InitialUnread, .Initial:
reason = .initial
prepareOnMainQueue = true
case .Generic:
reason = .interactiveChanges
case .UpdateVisible:
reason = .reload
case .FillHole:
reason = .reload
}
}
}
let removingPeerId = currentRemovingPeerId.with { $0 }
var disableAnimations = true
if previousState.editing != state.editing {
disableAnimations = false
} else {
var previousPinnedChats: [EnginePeer.Id] = []
var updatedPinnedChats: [EnginePeer.Id] = []
var didIncludeRemovingPeerId = false
var didIncludeHiddenByDefaultArchive = false
if let previous = previousView {
for entry in previous.filteredEntries {
if case let .PeerEntry(index, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _) = entry {
if index.pinningIndex != nil {
previousPinnedChats.append(index.messageIndex.id.peerId)
}
if index.messageIndex.id.peerId == removingPeerId {
didIncludeRemovingPeerId = true
}
} else if case let .GroupReferenceEntry(_, _, _, _, _, _, _, _, hiddenByDefault) = entry {
didIncludeHiddenByDefaultArchive = hiddenByDefault
}
}
}
var doesIncludeRemovingPeerId = false
var doesIncludeArchive = false
var doesIncludeHiddenByDefaultArchive = false
for entry in processedView.filteredEntries {
if case let .PeerEntry(index, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _) = entry {
if index.pinningIndex != nil {
updatedPinnedChats.append(index.messageIndex.id.peerId)
}
if index.messageIndex.id.peerId == removingPeerId {
doesIncludeRemovingPeerId = true
}
} else if case let .GroupReferenceEntry(_, _, _, _, _, _, _, _, hiddenByDefault) = entry {
doesIncludeArchive = true
doesIncludeHiddenByDefaultArchive = hiddenByDefault
}
}
if previousPinnedChats != updatedPinnedChats {
disableAnimations = false
}
if previousState.selectedPeerIds != state.selectedPeerIds {
disableAnimations = false
}
if previousState.selectedAdditionalCategoryIds != state.selectedAdditionalCategoryIds {
disableAnimations = false
}
if doesIncludeRemovingPeerId != didIncludeRemovingPeerId {
disableAnimations = false
}
if hideArchivedFolderByDefault && previousState.archiveShouldBeTemporaryRevealed != state.archiveShouldBeTemporaryRevealed && doesIncludeArchive {
disableAnimations = false
}
if didIncludeHiddenByDefaultArchive != doesIncludeHiddenByDefaultArchive {
disableAnimations = false
}
}
if let _ = previousHideArchivedFolderByDefaultValue, previousHideArchivedFolderByDefaultValue != hideArchivedFolderByDefault {
disableAnimations = false
}
var searchMode = false
if case .peers = mode {
searchMode = true
}
if filter != previousView?.filter {
disableAnimations = true
updatedScrollPosition = nil
}
let filterData = filter.flatMap { filter -> ChatListItemFilterData? in
if case let .filter(_, _, _, data) = filter {
return ChatListItemFilterData(excludesArchived: data.excludeArchived)
} else {
return nil
}
}
return preparedChatListNodeViewTransition(from: previousView, to: processedView, reason: reason, previewing: previewing, disableAnimations: disableAnimations, account: context.account, scrollPosition: updatedScrollPosition, searchMode: searchMode)
|> map({ mappedChatListNodeViewListTransition(context: context, nodeInteraction: nodeInteraction, peerGroupId: groupId, filterData: filterData, mode: mode, transition: $0) })
|> runOn(prepareOnMainQueue ? Queue.mainQueue() : viewProcessingQueue)
}
let appliedTransition = chatListNodeViewTransition |> deliverOnMainQueue |> mapToQueue { [weak self] transition -> Signal<Void, NoError> in
if let strongSelf = self {
return strongSelf.enqueueTransition(transition)
}
return .complete()
}
self.displayedItemRangeChanged = { [weak self] range, transactionOpaqueState in
if let strongSelf = self, let chatListView = (transactionOpaqueState as? ChatListOpaqueTransactionState)?.chatListView {
let originalView = chatListView.originalView
if let range = range.loadedRange {
var location: ChatListNodeLocation?
if range.firstIndex < 5, let laterIndex = originalView.laterIndex {
location = .navigation(index: laterIndex, filter: strongSelf.chatListFilter)
} else if range.firstIndex >= 5, range.lastIndex >= originalView.entries.count - 5, let earlierIndex = originalView.earlierIndex {
location = .navigation(index: earlierIndex, filter: strongSelf.chatListFilter)
}
if let location = location, location != strongSelf.currentLocation {
strongSelf.setChatListLocation(location)
}
strongSelf.enqueueHistoryPreloadUpdate()
}
var archiveVisible = false
if let range = range.visibleRange {
let entryCount = chatListView.filteredEntries.count
for i in range.firstIndex ..< range.lastIndex {
if i < 0 || i >= entryCount {
assertionFailure()
continue
}
switch chatListView.filteredEntries[entryCount - i - 1] {
case .PeerEntry:
break
case .GroupReferenceEntry:
archiveVisible = true
default:
break
}
}
}
if !archiveVisible && strongSelf.currentState.archiveShouldBeTemporaryRevealed {
strongSelf.updateState { state in
var state = state
state.archiveShouldBeTemporaryRevealed = false
return state
}
}
}
}
self.interaction = nodeInteraction
self.chatListDisposable.set(appliedTransition.start())
let initialLocation: ChatListNodeLocation
switch mode {
case .chatList:
initialLocation = .initial(count: 50, filter: self.chatListFilter)
case .peers:
initialLocation = .initial(count: 200, filter: self.chatListFilter)
}
self.setChatListLocation(initialLocation)
let postbox = context.account.postbox
let previousPeerCache = Atomic<[EnginePeer.Id: EnginePeer]>(value: [:])
let previousActivities = Atomic<ChatListNodePeerInputActivities?>(value: nil)
self.activityStatusesDisposable = (context.account.allPeerInputActivities()
|> mapToSignal { activitiesByPeerId -> Signal<[EnginePeer.Id: [(EnginePeer, PeerInputActivity)]], NoError> in
var foundAllPeers = true
var cachedResult: [EnginePeer.Id: [(EnginePeer, PeerInputActivity)]] = [:]
previousPeerCache.with { dict -> Void in
for (chatPeerId, activities) in activitiesByPeerId {
guard case .global = chatPeerId.category else {
continue
}
var cachedChatResult: [(EnginePeer, PeerInputActivity)] = []
for (peerId, activity) in activities {
if let peer = dict[peerId] {
cachedChatResult.append((peer, activity))
} else {
foundAllPeers = false
break
}
cachedResult[chatPeerId.peerId] = cachedChatResult
}
}
}
if foundAllPeers {
return .single(cachedResult)
} else {
return postbox.transaction { transaction -> [EnginePeer.Id: [(EnginePeer, PeerInputActivity)]] in
var result: [EnginePeer.Id: [(EnginePeer, PeerInputActivity)]] = [:]
var peerCache: [EnginePeer.Id: EnginePeer] = [:]
for (chatPeerId, activities) in activitiesByPeerId {
guard case .global = chatPeerId.category else {
continue
}
var chatResult: [(EnginePeer, PeerInputActivity)] = []
for (peerId, activity) in activities {
if let peer = transaction.getPeer(peerId) {
chatResult.append((EnginePeer(peer), activity))
peerCache[peerId] = EnginePeer(peer)
}
}
result[chatPeerId.peerId] = chatResult
}
let _ = previousPeerCache.swap(peerCache)
return result
}
}
}
|> map { activities -> ChatListNodePeerInputActivities? in
return previousActivities.modify { current in
var updated = false
let currentList: [EnginePeer.Id: [(EnginePeer, PeerInputActivity)]] = current?.activities ?? [:]
if currentList.count != activities.count {
updated = true
} else {
outer: for (peerId, currentValue) in currentList {
if let value = activities[peerId] {
if currentValue.count != value.count {
updated = true
break outer
} else {
for i in 0 ..< currentValue.count {
if currentValue[i].0 != value[i].0 {
updated = true
break outer
}
if currentValue[i].1 != value[i].1 {
updated = true
break outer
}
}
}
} else {
updated = true
break outer
}
}
}
if updated {
if activities.isEmpty {
return nil
} else {
return ChatListNodePeerInputActivities(activities: activities)
}
} else {
return current
}
}
}
|> deliverOnMainQueue).start(next: { [weak self] activities in
if let strongSelf = self {
strongSelf.updateState { state in
var state = state
state.peerInputActivities = activities
return state
}
}
})
self.reorderItem = { [weak self] fromIndex, toIndex, transactionOpaqueState -> Signal<Bool, NoError> in
if let strongSelf = self, let filteredEntries = (transactionOpaqueState as? ChatListOpaqueTransactionState)?.chatListView.filteredEntries {
if fromIndex >= 0 && fromIndex < filteredEntries.count && toIndex >= 0 && toIndex < filteredEntries.count {
let fromEntry = filteredEntries[filteredEntries.count - 1 - fromIndex]
let toEntry = filteredEntries[filteredEntries.count - 1 - toIndex]
var referenceId: EngineChatList.PinnedItem.Id?
var beforeAll = false
switch toEntry {
case let .PeerEntry(index, _, _, _, _, _, _, _, _, _, _, _, _, _, promoInfo, _, _):
if promoInfo != nil {
beforeAll = true
} else {
referenceId = .peer(index.messageIndex.id.peerId)
}
default:
break
}
if case let .index(index) = fromEntry.sortIndex, let _ = index.pinningIndex {
let location: TogglePeerChatPinnedLocation
if let chatListFilter = chatListFilter {
location = .filter(chatListFilter.id)
} else {
location = .group(groupId._asGroup())
}
let engine = strongSelf.context.engine
return engine.peers.getPinnedItemIds(location: location)
|> mapToSignal { itemIds -> Signal<Bool, NoError> in
var itemIds = itemIds
var itemId: EngineChatList.PinnedItem.Id?
switch fromEntry {
case let .PeerEntry(index, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _):
itemId = .peer(index.messageIndex.id.peerId)
default:
break
}
if let itemId = itemId {
itemIds = itemIds.filter({ $0 != itemId })
if let referenceId = referenceId {
var inserted = false
for i in 0 ..< itemIds.count {
if itemIds[i] == referenceId {
if fromIndex < toIndex {
itemIds.insert(itemId, at: i + 1)
} else {
itemIds.insert(itemId, at: i)
}
inserted = true
break
}
}
if !inserted {
itemIds.append(itemId)
}
} else if beforeAll {
itemIds.insert(itemId, at: 0)
} else {
itemIds.append(itemId)
}
return engine.peers.reorderPinnedItemIds(location: location, itemIds: itemIds)
} else {
return .single(false)
}
}
}
}
}
return .single(false)
}
var startedScrollingAtUpperBound = false
self.beganInteractiveDragging = { [weak self] _ in
guard let strongSelf = self else {
return
}
switch strongSelf.visibleContentOffset() {
case .none, .unknown:
startedScrollingAtUpperBound = false
case let .known(value):
startedScrollingAtUpperBound = value <= 0.0
}
if strongSelf.currentState.peerIdWithRevealedOptions != nil {
strongSelf.updateState { state in
var state = state
state.peerIdWithRevealedOptions = nil
return state
}
}
}
self.didEndScrolling = { [weak self] _ in
guard let strongSelf = self else {
return
}
startedScrollingAtUpperBound = false
let _ = strongSelf.contentScrollingEnded?(strongSelf)
let revealHiddenItems: Bool
switch strongSelf.visibleContentOffset() {
case .none, .unknown:
revealHiddenItems = false
case let .known(value):
revealHiddenItems = value <= 54.0
}
if !revealHiddenItems && strongSelf.currentState.archiveShouldBeTemporaryRevealed {
strongSelf.updateState { state in
var state = state
state.archiveShouldBeTemporaryRevealed = false
return state
}
}
}
self.scrollToTopOptionPromise.set(combineLatest(
renderedTotalUnreadCount(accountManager: self.context.sharedContext.accountManager, engine: self.context.engine) |> deliverOnMainQueue,
self.scrolledAtTop.get()
) |> map { badge, scrolledAtTop -> ChatListGlobalScrollOption in
if scrolledAtTop {
return .none
} else {
return .top
}
})
self.visibleContentOffsetChanged = { [weak self] offset in
guard let strongSelf = self else {
return
}
let atTop: Bool
var revealHiddenItems: Bool = false
switch offset {
case .none, .unknown:
atTop = false
case let .known(value):
atTop = value <= 0.0
if startedScrollingAtUpperBound && strongSelf.isTracking {
revealHiddenItems = value <= -60.0
}
}
strongSelf.scrolledAtTopValue = atTop
strongSelf.contentOffsetChanged?(offset)
if revealHiddenItems && !strongSelf.currentState.archiveShouldBeTemporaryRevealed {
var isHiddenArchiveVisible = false
strongSelf.forEachItemNode({ itemNode in
if let itemNode = itemNode as? ChatListItemNode, let item = itemNode.item {
if case let .groupReference(_, _, _, _, hiddenByDefault) = item.content {
if hiddenByDefault {
isHiddenArchiveVisible = true
}
}
}
})
if isHiddenArchiveVisible {
if strongSelf.hapticFeedback == nil {
strongSelf.hapticFeedback = HapticFeedback()
}
strongSelf.hapticFeedback?.impact(.medium)
strongSelf.updateState { state in
var state = state
state.archiveShouldBeTemporaryRevealed = true
return state
}
}
}
}
self.resetFilter()
let selectionRecognizer = ChatHistoryListSelectionRecognizer(target: self, action: #selector(self.selectionPanGesture(_:)))
selectionRecognizer.shouldBegin = { [weak self] in
guard let strongSelf = self else {
return false
}
return strongSelf.isSelectionGestureEnabled
}
self.view.addGestureRecognizer(selectionRecognizer)
}
deinit {
self.chatListDisposable.dispose()
self.activityStatusesDisposable?.dispose()
self.updatedFilterDisposable.dispose()
}
func updateFilter(_ filter: ChatListFilter?) {
if filter?.id != self.chatListFilter?.id {
self.chatListFilter = filter
self.resetFilter()
}
}
private func resetFilter() {
if let chatListFilter = self.chatListFilter {
self.updatedFilterDisposable.set((self.context.engine.peers.updatedChatListFilters()
|> map { filters -> ChatListFilter? in
for filter in filters {
if filter.id == chatListFilter.id {
return filter
}
}
return nil
}
|> deliverOnMainQueue).start(next: { [weak self] updatedFilter in
guard let strongSelf = self else {
return
}
if strongSelf.chatListFilter != updatedFilter {
strongSelf.chatListFilter = updatedFilter
}
}))
} else {
self.updatedFilterDisposable.set(nil)
}
}
public func updateThemeAndStrings(theme: PresentationTheme, fontSize: PresentationFontSize, strings: PresentationStrings, dateTimeFormat: PresentationDateTimeFormat, nameSortOrder: PresentationPersonNameOrder, nameDisplayOrder: PresentationPersonNameOrder, disableAnimations: Bool) {
if theme !== self.currentState.presentationData.theme || strings !== self.currentState.presentationData.strings || dateTimeFormat != self.currentState.presentationData.dateTimeFormat {
self.theme = theme
if self.keepTopItemOverscrollBackground != nil {
self.keepTopItemOverscrollBackground = ListViewKeepTopItemOverscrollBackground(color: theme.chatList.pinnedItemBackgroundColor, direction: true)
}
self.verticalScrollIndicatorColor = theme.list.scrollIndicatorColor
self.updateState { state in
var state = state
state.presentationData = ChatListPresentationData(theme: theme, fontSize: fontSize, strings: strings, dateTimeFormat: dateTimeFormat, nameSortOrder: nameSortOrder, nameDisplayOrder: nameDisplayOrder, disableAnimations: disableAnimations)
return state
}
}
}
public func updateState(_ f: (ChatListNodeState) -> ChatListNodeState) {
let state = f(self.currentState)
if state != self.currentState {
self.currentState = state
self.statePromise.set(state)
}
}
private func enqueueTransition(_ transition: ChatListNodeListViewTransition) -> Signal<Void, NoError> {
return Signal { [weak self] subscriber in
if let strongSelf = self {
if let _ = strongSelf.enqueuedTransition {
preconditionFailure()
}
strongSelf.enqueuedTransition = (transition, {
subscriber.putCompletion()
})
if strongSelf.isNodeLoaded, strongSelf.dequeuedInitialTransitionOnLayout {
strongSelf.dequeueTransition()
} else {
if !strongSelf.didSetReady {
strongSelf.didSetReady = true
strongSelf._ready.set(true)
}
}
} else {
subscriber.putCompletion()
}
return EmptyDisposable
} |> runOn(Queue.mainQueue())
}
private func dequeueTransition() {
if let (transition, completion) = self.enqueuedTransition {
self.enqueuedTransition = nil
let completion: (ListViewDisplayedItemRange) -> Void = { [weak self] visibleRange in
if let strongSelf = self {
strongSelf.chatListView = transition.chatListView
if strongSelf.fillPreloadItems {
let filteredEntries = transition.chatListView.filteredEntries
var preloadItems: [ChatHistoryPreloadItem] = []
if transition.chatListView.originalView.laterIndex == nil {
for entry in filteredEntries.reversed() {
switch entry {
case let .PeerEntry(index, _, _, combinedReadState, isMuted, _, _, _, _, _, _, _, _, _, promoInfo, _, _):
if promoInfo == nil {
var hasUnread = false
if let combinedReadState = combinedReadState {
hasUnread = combinedReadState.count > 0
}
preloadItems.append(ChatHistoryPreloadItem(index: index, isMuted: isMuted, hasUnread: hasUnread))
}
default:
break
}
if preloadItems.count >= 30 {
break
}
}
}
strongSelf.preloadItems.set(.single(preloadItems))
}
var pinnedOverscroll = false
if case .chatList = strongSelf.mode {
let entryCount = transition.chatListView.filteredEntries.count
if entryCount >= 1 {
if case let .index(index) = transition.chatListView.filteredEntries[entryCount - 1].sortIndex, index.pinningIndex != nil {
pinnedOverscroll = true
}
}
}
if pinnedOverscroll != (strongSelf.keepTopItemOverscrollBackground != nil) {
if pinnedOverscroll {
strongSelf.keepTopItemOverscrollBackground = ListViewKeepTopItemOverscrollBackground(color: strongSelf.theme.chatList.pinnedItemBackgroundColor, direction: true)
} else {
strongSelf.keepTopItemOverscrollBackground = nil
}
}
if let scrollToItem = transition.scrollToItem, case .center = scrollToItem.position {
if let itemNode = strongSelf.itemNodeAtIndex(scrollToItem.index) as? ChatListItemNode {
itemNode.flashHighlight()
}
}
if !strongSelf.didSetReady {
strongSelf.didSetReady = true
strongSelf._ready.set(true)
}
if !strongSelf.didSetContentsReady {
strongSelf.didSetContentsReady = true
strongSelf._contentsReady.set(true)
}
var isEmpty = false
var isLoading = false
var hasArchiveInfo = false
if transition.chatListView.filteredEntries.isEmpty {
isEmpty = true
} else {
if transition.chatListView.filteredEntries.count <= 2 {
isEmpty = true
loop1: for entry in transition.chatListView.filteredEntries {
switch entry {
case .GroupReferenceEntry, .HeaderEntry, .HoleEntry:
break
default:
if case .ArchiveIntro = entry {
hasArchiveInfo = true
}
isEmpty = false
break loop1
}
}
isLoading = true
var hasHoles = false
loop2: for entry in transition.chatListView.filteredEntries {
switch entry {
case .HoleEntry:
hasHoles = true
case .HeaderEntry:
break
default:
isLoading = false
break loop2
}
}
if !hasHoles {
isLoading = false
}
} else {
for entry in transition.chatListView.filteredEntries.reversed().prefix(2) {
if case .ArchiveIntro = entry {
hasArchiveInfo = true
break
}
}
}
}
let isEmptyState: ChatListNodeEmptyState
if transition.chatListView.isLoading {
isEmptyState = .empty(isLoading: true, hasArchiveInfo: hasArchiveInfo)
} else if isEmpty {
isEmptyState = .empty(isLoading: isLoading, hasArchiveInfo: false)
} else {
var containsChats = false
loop: for entry in transition.chatListView.filteredEntries {
switch entry {
case .GroupReferenceEntry, .HoleEntry, .PeerEntry:
containsChats = true
break loop
case .ArchiveIntro, .HeaderEntry, .AdditionalCategory:
break
}
}
isEmptyState = .notEmpty(containsChats: containsChats)
}
var insertedPeerIds: [EnginePeer.Id] = []
for item in transition.insertItems {
if let item = item.item as? ChatListItem {
switch item.content {
case let .peer(_, peer, _, _, _, _, _, _, _, _, _, _, _):
insertedPeerIds.append(peer.peerId)
case .groupReference:
break
}
}
}
if !insertedPeerIds.isEmpty {
strongSelf.addedVisibleChatsWithPeerIds?(insertedPeerIds)
}
var isEmptyUpdate: ContainedViewLayoutTransition = .immediate
if transition.options.contains(.AnimateInsertion) || transition.animateCrossfade {
isEmptyUpdate = .animated(duration: 0.25, curve: .easeInOut)
}
if strongSelf.currentIsEmptyState != isEmptyState {
strongSelf.currentIsEmptyState = isEmptyState
strongSelf.isEmptyUpdated?(isEmptyState, transition.chatListView.filter != nil, isEmptyUpdate)
}
if !strongSelf.hasUpdatedAppliedChatListFilterValueOnce || transition.chatListView.filter != strongSelf.currentAppliedChatListFilterValue {
strongSelf.currentAppliedChatListFilterValue = transition.chatListView.filter
strongSelf.appliedChatListFilterValue.set(.single(transition.chatListView.filter))
}
completion()
}
}
var options = transition.options
if self.view.window != nil {
if !options.contains(.AnimateInsertion) {
options.insert(.PreferSynchronousDrawing)
options.insert(.PreferSynchronousResourceLoading)
}
if options.contains(.AnimateCrossfade) && !self.isDeceleratingAfterTracking {
options.insert(.PreferSynchronousDrawing)
}
}
var scrollToItem = transition.scrollToItem
if transition.adjustScrollToFirstItem {
var offset: CGFloat = 0.0
switch self.visibleContentOffset() {
case let .known(value) where abs(value) < .ulpOfOne:
offset = 0.0
default:
offset = -navigationBarSearchContentHeight
}
scrollToItem = ListViewScrollToItem(index: 0, position: .top(offset), animated: false, curve: .Default(duration: 0.0), directionHint: .Up)
}
self.transaction(deleteIndices: transition.deleteItems, insertIndicesAndItems: transition.insertItems, updateIndicesAndItems: transition.updateItems, options: options, scrollToItem: scrollToItem, stationaryItemRange: transition.stationaryItemRange, updateOpaqueState: ChatListOpaqueTransactionState(chatListView: transition.chatListView), completion: completion)
}
}
var isNavigationHidden: Bool {
switch self.visibleContentOffset() {
case let .known(value) where abs(value) < navigationBarSearchContentHeight - 1.0:
return false
default:
return true
}
}
var isNavigationInAFinalState: Bool {
switch self.visibleContentOffset() {
case let .known(value):
if value < navigationBarSearchContentHeight - 1.0 {
if abs(value - 0.0) < 1.0 {
return true
}
if abs(value - navigationBarSearchContentHeight) < 1.0 {
return true
}
return false
} else {
return true
}
default:
return true
}
}
func adjustScrollOffsetForNavigation(isNavigationHidden: Bool) {
if self.isNavigationHidden == isNavigationHidden {
return
}
var scrollToItem: ListViewScrollToItem?
switch self.visibleContentOffset() {
case let .known(value) where abs(value) < navigationBarSearchContentHeight - 1.0:
if isNavigationHidden {
scrollToItem = ListViewScrollToItem(index: 0, position: .top(-navigationBarSearchContentHeight), animated: false, curve: .Default(duration: 0.0), directionHint: .Up)
}
default:
if !isNavigationHidden {
scrollToItem = ListViewScrollToItem(index: 0, position: .top(0.0), animated: false, curve: .Default(duration: 0.0), directionHint: .Up)
}
}
if let scrollToItem = scrollToItem {
self.transaction(deleteIndices: [], insertIndicesAndItems: [], updateIndicesAndItems: [], options: [.Synchronous], scrollToItem: scrollToItem, updateSizeAndInsets: nil, stationaryItemRange: nil, updateOpaqueState: nil, completion: { _ in })
}
}
public func updateLayout(transition: ContainedViewLayoutTransition, updateSizeAndInsets: ListViewUpdateSizeAndInsets) {
self.transaction(deleteIndices: [], insertIndicesAndItems: [], updateIndicesAndItems: [], options: [.Synchronous, .LowLatency], scrollToItem: nil, updateSizeAndInsets: updateSizeAndInsets, stationaryItemRange: nil, updateOpaqueState: nil, completion: { _ in })
if !self.dequeuedInitialTransitionOnLayout {
self.dequeuedInitialTransitionOnLayout = true
self.dequeueTransition()
}
}
public func scrollToPosition(_ position: ChatListNodeScrollPosition) {
if let view = self.chatListView?.originalView {
if case .auto = position {
switch self.visibleContentOffset() {
case .none, .unknown:
if let maxVisibleChatListIndex = self.currentlyVisibleLatestChatListIndex() {
self.scrollToEarliestUnread(earlierThan: maxVisibleChatListIndex)
return
}
case let .known(offset):
if offset <= 0.0 {
self.scrollToEarliestUnread(earlierThan: nil)
return
} else {
if let maxVisibleChatListIndex = self.currentlyVisibleLatestChatListIndex() {
self.scrollToEarliestUnread(earlierThan: maxVisibleChatListIndex)
return
}
}
}
} else if case .autoUp = position, let maxVisibleChatListIndex = self.currentlyVisibleLatestChatListIndex() {
self.scrollToEarliestUnread(earlierThan: maxVisibleChatListIndex)
return
}
if view.laterIndex == nil {
self.transaction(deleteIndices: [], insertIndicesAndItems: [], updateIndicesAndItems: [], options: [.Synchronous], scrollToItem: ListViewScrollToItem(index: 0, position: .top(0.0), animated: true, curve: .Default(duration: nil), directionHint: .Up), updateSizeAndInsets: nil, stationaryItemRange: nil, updateOpaqueState: nil, completion: { _ in })
} else {
let location: ChatListNodeLocation = .scroll(index: .absoluteUpperBound, sourceIndex: .absoluteLowerBound, scrollPosition: .top(0.0), animated: true, filter: self.chatListFilter)
self.setChatListLocation(location)
}
} else {
let location: ChatListNodeLocation = .scroll(index: .absoluteUpperBound, sourceIndex: .absoluteLowerBound
, scrollPosition: .top(0.0), animated: true, filter: self.chatListFilter)
self.setChatListLocation(location)
}
}
private func setChatListLocation(_ location: ChatListNodeLocation) {
self.currentLocation = location
self.chatListLocation.set(location)
}
private func relativeUnreadChatListIndex(position: EngineChatList.RelativePosition) -> Signal<EngineChatList.Item.Index?, NoError> {
let groupId = self.groupId
let postbox = self.context.account.postbox
return self.context.sharedContext.accountManager.transaction { transaction -> Signal<EngineChatList.Item.Index?, NoError> in
var filter = true
if let inAppNotificationSettings = transaction.getSharedData(ApplicationSpecificSharedDataKeys.inAppNotificationSettings)?.get(InAppNotificationSettings.self) {
switch inAppNotificationSettings.totalUnreadCountDisplayStyle {
case .filtered:
filter = true
}
}
return postbox.transaction { transaction -> EngineChatList.Item.Index? in
return transaction.getRelativeUnreadChatListIndex(filtered: filter, position: position._asPosition(), groupId: groupId._asGroup())
}
}
|> switchToLatest
}
public func scrollToEarliestUnread(earlierThan: EngineChatList.Item.Index?) {
let _ = (relativeUnreadChatListIndex(position: .earlier(than: earlierThan)) |> deliverOnMainQueue).start(next: { [weak self] index in
guard let strongSelf = self else {
return
}
if let index = index {
let location: ChatListNodeLocation = .scroll(index: index, sourceIndex: self?.currentlyVisibleLatestChatListIndex() ?? .absoluteUpperBound
, scrollPosition: .center(.top), animated: true, filter: strongSelf.chatListFilter)
strongSelf.setChatListLocation(location)
} else {
let location: ChatListNodeLocation = .scroll(index: .absoluteUpperBound, sourceIndex: .absoluteLowerBound
, scrollPosition: .top(0.0), animated: true, filter: strongSelf.chatListFilter)
strongSelf.setChatListLocation(location)
}
})
}
public func selectChat(_ option: ChatListSelectionOption) {
guard let interaction = self.interaction else {
return
}
guard let chatListView = (self.opaqueTransactionState as? ChatListOpaqueTransactionState)?.chatListView else {
return
}
guard let range = self.displayedItemRange.loadedRange else {
return
}
let entryCount = chatListView.filteredEntries.count
var current: (EngineChatList.Item.Index, EnginePeer, Int)? = nil
var previous: (EngineChatList.Item.Index, EnginePeer)? = nil
var next: (EngineChatList.Item.Index, EnginePeer)? = nil
outer: for i in range.firstIndex ..< range.lastIndex {
if i < 0 || i >= entryCount {
assertionFailure()
continue
}
switch chatListView.filteredEntries[entryCount - i - 1] {
case let .PeerEntry(index, _, _, _, _, _, peer, _, _, _, _, _, _, _, _, _, _):
if interaction.highlightedChatLocation?.location == ChatLocation.peer(id: peer.peerId) {
current = (index, peer.peer!, entryCount - i - 1)
break outer
}
default:
break
}
}
switch option {
case .previous(unread: true), .next(unread: true):
let position: EngineChatList.RelativePosition
if let current = current {
if case .previous = option {
position = .earlier(than: current.0)
} else {
position = .later(than: current.0)
}
} else {
position = .later(than: nil)
}
let postbox = self.context.account.postbox
let _ = (relativeUnreadChatListIndex(position: position)
|> mapToSignal { index -> Signal<(EngineChatList.Item.Index, EnginePeer)?, NoError> in
if let index = index {
return postbox.transaction { transaction -> (EngineChatList.Item.Index, EnginePeer)? in
return transaction.getPeer(index.messageIndex.id.peerId).flatMap { peer -> (EngineChatList.Item.Index, EnginePeer)? in
(index, EnginePeer(peer))
}
}
} else {
return .single(nil)
}
}
|> deliverOnMainQueue).start(next: { [weak self] indexAndPeer in
guard let strongSelf = self, let (index, peer) = indexAndPeer else {
return
}
let location: ChatListNodeLocation = .scroll(index: index, sourceIndex: strongSelf.currentlyVisibleLatestChatListIndex() ?? .absoluteUpperBound, scrollPosition: .center(.top), animated: true, filter: strongSelf.chatListFilter)
strongSelf.setChatListLocation(location)
strongSelf.peerSelected?(peer, false, false, nil)
})
case .previous(unread: false), .next(unread: false):
var target: (EngineChatList.Item.Index, EnginePeer)? = nil
if let current = current, entryCount > 1 {
if current.2 > 0, case let .PeerEntry(index, _, _, _, _, _, peer, _, _, _, _, _, _, _, _, _, _) = chatListView.filteredEntries[current.2 - 1] {
next = (index, peer.peer!)
}
if current.2 <= entryCount - 2, case let .PeerEntry(index, _, _, _, _, _, peer, _, _, _, _, _, _, _, _, _, _) = chatListView.filteredEntries[current.2 + 1] {
previous = (index, peer.peer!)
}
if case .previous = option {
target = previous
} else {
target = next
}
} else if entryCount > 0 {
if case let .PeerEntry(index, _, _, _, _, _, peer, _, _, _, _, _, _, _, _, _, _) = chatListView.filteredEntries[entryCount - 1] {
target = (index, peer.peer!)
}
}
if let target = target {
let location: ChatListNodeLocation = .scroll(index: target.0, sourceIndex: .absoluteLowerBound, scrollPosition: .center(.top), animated: true, filter: self.chatListFilter)
self.setChatListLocation(location)
self.peerSelected?(target.1, false, false, nil)
}
case let .peerId(peerId):
let _ = (self.context.account.postbox.transaction { transaction -> EnginePeer? in
return transaction.getPeer(peerId).flatMap(EnginePeer.init)
}
|> deliverOnMainQueue).start(next: { [weak self] peer in
guard let strongSelf = self, let peer = peer else {
return
}
strongSelf.peerSelected?(peer, false, false, nil)
})
case let .index(index):
guard index < 10 else {
return
}
let _ = (self.chatListFilterValue.get()
|> take(1)
|> deliverOnMainQueue).start(next: { [weak self] filter in
guard let self = self else {
return
}
let _ = (chatListViewForLocation(groupId: self.groupId._asGroup(), location: .initial(count: 10, filter: filter), account: self.context.account)
|> take(1)
|> deliverOnMainQueue).start(next: { update in
let entries = update.view.entries
if entries.count > index, case let .MessageEntry(index, _, _, _, _, renderedPeer, _, _, _, _) = entries[10 - index - 1] {
let location: ChatListNodeLocation = .scroll(index: index, sourceIndex: .absoluteLowerBound, scrollPosition: .center(.top), animated: true, filter: filter)
self.setChatListLocation(location)
self.peerSelected?(EnginePeer(renderedPeer.peer!), false, false, nil)
}
})
})
}
}
private func enqueueHistoryPreloadUpdate() {
}
public func updateSelectedChatLocation(_ chatLocation: ChatLocation?, progress: CGFloat, transition: ContainedViewLayoutTransition) {
guard let interaction = self.interaction else {
return
}
if let chatLocation = chatLocation {
interaction.highlightedChatLocation = ChatListHighlightedLocation(location: chatLocation, progress: progress)
} else {
interaction.highlightedChatLocation = nil
}
self.forEachItemNode { itemNode in
if let itemNode = itemNode as? ChatListItemNode {
itemNode.updateIsHighlighted(transition: transition)
}
}
}
private func currentlyVisibleLatestChatListIndex() -> EngineChatList.Item.Index? {
guard let chatListView = (self.opaqueTransactionState as? ChatListOpaqueTransactionState)?.chatListView else {
return nil
}
if let range = self.displayedItemRange.visibleRange {
let entryCount = chatListView.filteredEntries.count
for i in range.firstIndex ..< range.lastIndex {
if i < 0 || i >= entryCount {
assertionFailure()
continue
}
switch chatListView.filteredEntries[entryCount - i - 1] {
case let .PeerEntry(index, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _):
return index
default:
break
}
}
}
return nil
}
private func peerAtPoint(_ point: CGPoint) -> EnginePeer? {
var resultPeer: EnginePeer?
self.forEachVisibleItemNode { itemNode in
if resultPeer == nil, let itemNode = itemNode as? ListViewItemNode, itemNode.frame.contains(point) {
if let itemNode = itemNode as? ChatListItemNode, let item = itemNode.item {
switch item.content {
case let .peer(_, peer, _, _, _, _, _, _, _, _, _, _, _):
resultPeer = peer.peer
default:
break
}
}
}
}
return resultPeer
}
private var selectionPanState: (selecting: Bool, initialPeerId: EnginePeer.Id, toggledPeerIds: [[EnginePeer.Id]])?
private var selectionScrollActivationTimer: SwiftSignalKit.Timer?
private var selectionScrollDisplayLink: ConstantDisplayLinkAnimator?
private var selectionScrollDelta: CGFloat?
private var selectionLastLocation: CGPoint?
@objc private func selectionPanGesture(_ recognizer: UIGestureRecognizer) -> Void {
let location = recognizer.location(in: self.view)
switch recognizer.state {
case .began:
if let peer = self.peerAtPoint(location) {
let selecting = !self.currentState.selectedPeerIds.contains(peer.id)
self.selectionPanState = (selecting, peer.id, [])
self.interaction?.togglePeersSelection([.peer(peer)], selecting)
}
case .changed:
self.handlePanSelection(location: location)
self.selectionLastLocation = location
case .ended, .failed, .cancelled:
self.selectionPanState = nil
self.selectionScrollDisplayLink = nil
self.selectionScrollActivationTimer?.invalidate()
self.selectionScrollActivationTimer = nil
self.selectionScrollDelta = nil
self.selectionLastLocation = nil
self.selectionScrollSkipUpdate = false
case .possible:
break
@unknown default:
fatalError()
}
}
private func handlePanSelection(location: CGPoint) {
var location = location
if location.y < self.insets.top {
location.y = self.insets.top + 5.0
} else if location.y > self.frame.height - self.insets.bottom {
location.y = self.frame.height - self.insets.bottom - 5.0
}
if let state = self.selectionPanState {
if let peer = self.peerAtPoint(location) {
if peer.id == state.initialPeerId {
if !state.toggledPeerIds.isEmpty {
self.interaction?.togglePeersSelection(state.toggledPeerIds.flatMap { $0.compactMap({ .peerId($0) }) }, !state.selecting)
self.selectionPanState = (state.selecting, state.initialPeerId, [])
}
} else if state.toggledPeerIds.last?.first != peer.id {
var updatedToggledPeerIds: [[EnginePeer.Id]] = []
var previouslyToggled = false
for i in (0 ..< state.toggledPeerIds.count) {
if let peerId = state.toggledPeerIds[i].first {
if peerId == peer.id {
previouslyToggled = true
updatedToggledPeerIds = Array(state.toggledPeerIds.prefix(i + 1))
let peerIdsToToggle = Array(state.toggledPeerIds.suffix(state.toggledPeerIds.count - i - 1)).flatMap { $0 }
self.interaction?.togglePeersSelection(peerIdsToToggle.compactMap { .peerId($0) }, !state.selecting)
break
}
}
}
if !previouslyToggled {
updatedToggledPeerIds = state.toggledPeerIds
let isSelected = self.currentState.selectedPeerIds.contains(peer.id)
if state.selecting != isSelected {
updatedToggledPeerIds.append([peer.id])
self.interaction?.togglePeersSelection([.peer(peer)], state.selecting)
}
}
self.selectionPanState = (state.selecting, state.initialPeerId, updatedToggledPeerIds)
}
}
let scrollingAreaHeight: CGFloat = 50.0
if location.y < scrollingAreaHeight + self.insets.top || location.y > self.frame.height - scrollingAreaHeight - self.insets.bottom {
if location.y < self.frame.height / 2.0 {
self.selectionScrollDelta = (scrollingAreaHeight - (location.y - self.insets.top)) / scrollingAreaHeight
} else {
self.selectionScrollDelta = -(scrollingAreaHeight - min(scrollingAreaHeight, max(0.0, (self.frame.height - self.insets.bottom - location.y)))) / scrollingAreaHeight
}
if let displayLink = self.selectionScrollDisplayLink {
displayLink.isPaused = false
} else {
if let _ = self.selectionScrollActivationTimer {
} else {
let timer = SwiftSignalKit.Timer(timeout: 0.45, repeat: false, completion: { [weak self] in
self?.setupSelectionScrolling()
}, queue: .mainQueue())
timer.start()
self.selectionScrollActivationTimer = timer
}
}
} else {
self.selectionScrollDisplayLink?.isPaused = true
self.selectionScrollActivationTimer?.invalidate()
self.selectionScrollActivationTimer = nil
}
}
}
private var selectionScrollSkipUpdate = false
private func setupSelectionScrolling() {
self.selectionScrollDisplayLink = ConstantDisplayLinkAnimator(update: { [weak self] in
self?.selectionScrollActivationTimer = nil
if let strongSelf = self, let delta = strongSelf.selectionScrollDelta {
let distance: CGFloat = 15.0 * min(1.0, 0.15 + abs(delta * delta))
let direction: ListViewScrollDirection = delta > 0.0 ? .up : .down
let _ = strongSelf.scrollWithDirection(direction, distance: distance)
if let location = strongSelf.selectionLastLocation {
if !strongSelf.selectionScrollSkipUpdate {
strongSelf.handlePanSelection(location: location)
}
strongSelf.selectionScrollSkipUpdate = !strongSelf.selectionScrollSkipUpdate
}
}
})
self.selectionScrollDisplayLink?.isPaused = false
}
}
private func statusStringForPeerType(accountPeerId: EnginePeer.Id, strings: PresentationStrings, peer: EnginePeer, isMuted: Bool, isUnread: Bool, isContact: Bool, hasUnseenMentions: Bool, chatListFilters: [ChatListFilter]?) -> (String, Bool)? {
if accountPeerId == peer.id {
return nil
}
if let chatListFilters = chatListFilters {
var result = ""
for case let .filter(_, title, _, data) in chatListFilters {
let predicate = chatListFilterPredicate(filter: data)
if predicate.includes(peer: peer._asPeer(), groupId: .root, isRemovedFromTotalUnreadCount: isMuted, isUnread: isUnread, isContact: isContact, messageTagSummaryResult: hasUnseenMentions) {
if !result.isEmpty {
result.append(", ")
}
result.append(title)
}
}
if result.isEmpty {
return nil
} else {
return (result, true)
}
}
if peer.id.isReplies {
return nil
} else if case let .user(user) = peer {
if user.botInfo != nil || user.flags.contains(.isSupport) {
return (strings.ChatList_PeerTypeBot, false)
} else if isContact {
return (strings.ChatList_PeerTypeContact, false)
} else {
return (strings.ChatList_PeerTypeNonContact, false)
}
} else if case .secretChat = peer {
if isContact {
return (strings.ChatList_PeerTypeContact, false)
} else {
return (strings.ChatList_PeerTypeNonContact, false)
}
} else if case .legacyGroup = peer {
return (strings.ChatList_PeerTypeGroup, false)
} else if case let .channel(channel) = peer {
if case .group = channel.info {
return (strings.ChatList_PeerTypeGroup, false)
} else {
return (strings.ChatList_PeerTypeChannel, false)
}
}
return (strings.ChatList_PeerTypeNonContact, false)
}
public class ChatHistoryListSelectionRecognizer: UIPanGestureRecognizer {
private let selectionGestureActivationThreshold: CGFloat = 5.0
var recognized: Bool? = nil
var initialLocation: CGPoint = CGPoint()
public var shouldBegin: (() -> Bool)?
public override init(target: Any?, action: Selector?) {
super.init(target: target, action: action)
self.minimumNumberOfTouches = 2
self.maximumNumberOfTouches = 2
}
public override func reset() {
super.reset()
self.recognized = nil
}
public override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent) {
super.touchesBegan(touches, with: event)
if let shouldBegin = self.shouldBegin, !shouldBegin() {
self.state = .failed
} else {
let touch = touches.first!
self.initialLocation = touch.location(in: self.view)
}
}
public override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent) {
let location = touches.first!.location(in: self.view)
let translation = location.offsetBy(dx: -self.initialLocation.x, dy: -self.initialLocation.y)
let touchesArray = Array(touches)
if self.recognized == nil, touchesArray.count == 2 {
if let firstTouch = touchesArray.first, let secondTouch = touchesArray.last {
let firstLocation = firstTouch.location(in: self.view)
let secondLocation = secondTouch.location(in: self.view)
func distance(_ v1: CGPoint, _ v2: CGPoint) -> CGFloat {
let dx = v1.x - v2.x
let dy = v1.y - v2.y
return sqrt(dx * dx + dy * dy)
}
if distance(firstLocation, secondLocation) > 200.0 {
self.state = .failed
}
}
if self.state != .failed && (abs(translation.y) >= selectionGestureActivationThreshold) {
self.recognized = true
}
}
if let recognized = self.recognized, recognized {
super.touchesMoved(touches, with: event)
}
}
}
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