mirror of
https://github.com/vector-im/element-ios.git
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107 lines
3.8 KiB
Swift
107 lines
3.8 KiB
Swift
/*
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Copyright 2019 New Vector Ltd
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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@objc final class BubbleReactionsViewModel: NSObject, BubbleReactionsViewModelType {
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// MARK: - Constants
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private enum Constants {
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static let maxItemsWhenLimited: Int = 8
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}
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// MARK: - Properties
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// MARK: Private
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private let aggregatedReactions: MXAggregatedReactions
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private let eventId: String
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private let showAll: Bool
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// MARK: Public
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@objc weak var viewModelDelegate: BubbleReactionsViewModelDelegate?
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weak var viewDelegate: BubbleReactionsViewModelViewDelegate?
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// MARK: - Setup
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@objc init(aggregatedReactions: MXAggregatedReactions,
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eventId: String,
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showAll: Bool) {
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self.aggregatedReactions = aggregatedReactions
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self.eventId = eventId
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self.showAll = showAll
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}
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// MARK: - Public
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func process(viewAction: BubbleReactionsViewAction) {
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switch viewAction {
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case .loadData:
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self.loadData()
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case .tapReaction(let index):
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guard index < self.aggregatedReactions.reactions.count else {
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return
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}
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let reactionCount = self.aggregatedReactions.reactions[index]
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if reactionCount.myUserHasReacted {
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self.viewModelDelegate?.bubbleReactionsViewModel(self, didRemoveReaction: reactionCount, forEventId: self.eventId)
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} else {
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self.viewModelDelegate?.bubbleReactionsViewModel(self, didAddReaction: reactionCount, forEventId: self.eventId)
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}
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case .addNewReaction:
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break
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case .tapShowAction(.showAll):
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self.viewModelDelegate?.bubbleReactionsViewModel(self, didShowAllTappedForEventId: self.eventId)
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case .tapShowAction(.showLess):
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self.viewModelDelegate?.bubbleReactionsViewModel(self, didShowLessTappedForEventId: self.eventId)
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case .longPress:
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self.viewModelDelegate?.bubbleReactionsViewModel(self, didLongPressForEventId: self.eventId)
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}
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}
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func loadData() {
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var reactions = self.aggregatedReactions.reactions
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var showAllButtonState: BubbleReactionsViewState.ShowAllButtonState = .none
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// Limit displayed reactions if required
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if reactions.count > Constants.maxItemsWhenLimited {
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if self.showAll == true {
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showAllButtonState = .showLess
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} else {
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reactions = Array(reactions[0..<Constants.maxItemsWhenLimited])
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showAllButtonState = .showAll
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}
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}
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let reactionsViewData = reactions.map { (reactionCount) -> BubbleReactionViewData in
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return BubbleReactionViewData(emoji: reactionCount.reaction, countString: "\(reactionCount.count)", isCurrentUserReacted: reactionCount.myUserHasReacted)
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}
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self.viewDelegate?.bubbleReactionsViewModel(self, didUpdateViewState: .loaded(reactionsViewData: reactionsViewData, showAllButtonState: showAllButtonState))
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}
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// MARK: - Hashable
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override var hash: Int {
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var hasher = Hasher()
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hasher.combine(self.aggregatedReactions)
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hasher.combine(self.eventId)
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hasher.combine(self.showAll)
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return hasher.finalize()
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}
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}
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