88 lines
3.2 KiB
Swift
88 lines
3.2 KiB
Swift
//
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// Copyright 2021 New Vector Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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import Foundation
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import UIKit
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@objcMembers
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public class ThreadDataSource: RoomDataSource {
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private typealias ThreadID = String
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/// Map of cached data sources. Keys are thread identifiers.
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private static var dataSourceCache: [ThreadID: ThreadDataSource] = [:]
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public override func finalizeInitialization() {
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super.finalizeInitialization()
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showReadMarker = true
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showBubbleReceipts = true
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showTypingRow = false
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NotificationCenter.default.addObserver(self,
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selector: #selector(didReceiveMemoryWarning),
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name: UIApplication.didReceiveMemoryWarningNotification,
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object: nil)
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NotificationCenter.default.addObserver(self,
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selector: #selector(didLeaveRoom(_:)),
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name: .mxSessionDidLeaveRoom,
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object: nil)
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}
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public override class func load(withRoomId roomId: String!,
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initialEventId: String!,
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threadId: String!,
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andMatrixSession mxSession: MXSession!,
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onComplete: ((Any?) -> Void)!) {
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if let dataSource = dataSourceCache[threadId] {
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onComplete(dataSource)
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return
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}
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super.load(withRoomId: roomId, initialEventId: initialEventId, threadId: threadId, andMatrixSession: mxSession) { dataSource in
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if let dataSource = dataSource as? ThreadDataSource {
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Self.dataSourceCache[threadId] = dataSource
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}
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onComplete(dataSource)
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}
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}
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@objc
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private func didReceiveMemoryWarning() {
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MXLog.debug("[ThreadDataSource] didReceiveMemoryWarning. Will reload not active data sources in cache.")
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Self.dataSourceCache.forEach {
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if $1.delegate == nil {
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$1.reload()
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}
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}
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}
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@objc
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private func didLeaveRoom(_ notification: Notification) {
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MXLog.debug("[ThreadDataSource] didReceiveMemoryWarning. Will reload not active data sources in cache.")
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guard let session = notification.object as? MXSession,
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session == mxSession,
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let roomId = notification.userInfo?[kMXSessionNotificationRoomIdKey] as? String else {
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return
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}
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let threadIds = Array(Self.dataSourceCache.filter { $1.roomId == roomId }.keys)
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threadIds.forEach { Self.dataSourceCache.removeValue(forKey: $0) }
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}
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}
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