pEpForiOS/UI/EmailDisplay/EmailListViewController.swift
author buff <andreas@pep-project.org>
Mon, 04 Dec 2017 13:50:44 +0100
changeset 3513 f840199c40bc
parent 3505 fa8d14358538
child 3514 9a4b16d7434d
permissions -rw-r--r--
IOS-827 stops showing "more" swipe action in drafts folder
dirk@30
     1
//
dirk@30
     2
//  EmailListViewController.swift
dirk@30
     3
//  pEpForiOS
dirk@30
     4
//
dirk@30
     5
//  Created by Dirk Zimmermann on 16/04/16.
dirk@30
     6
//  Copyright © 2016 p≡p Security S.A. All rights reserved.
dirk@30
     7
//
dirk@30
     8
dirk@30
     9
import UIKit
dirk@810
    10
import MessageModel
xavier@3368
    11
import SwipeCellKit
dirk@810
    12
xavier@3368
    13
class EmailListViewController: BaseTableViewController, SwipeTableViewCellDelegate {
andreas@3223
    14
    var folderToShow: Folder?
andreas@3223
    15
andreas@3151
    16
    func updateLastLookAt() {
andreas@3224
    17
        guard let saveFolder = folderToShow else {
andreas@3151
    18
            return
andreas@3151
    19
        }
andreas@3151
    20
        saveFolder.updateLastLookAt()
andreas@3151
    21
    }
andreas@3208
    22
    
andreas@3151
    23
    private var model: EmailListViewModel?
andreas@3208
    24
    
andreas@3151
    25
    private let queue: OperationQueue = {
andreas@3151
    26
        let createe = OperationQueue()
andreas@3151
    27
        createe.qualityOfService = .userInteractive
andreas@3151
    28
        createe.maxConcurrentOperationCount = 10
andreas@3151
    29
        return createe
andreas@3151
    30
    }()
andreas@3151
    31
    private var operations = [IndexPath:Operation]()
andreas@2838
    32
    public static let storyboardId = "EmailListViewController"
andreas@3151
    33
    fileprivate var lastSelectedIndexPath: IndexPath?
andreas@3208
    34
    
igor@1301
    35
    let searchController = UISearchController(searchResultsController: nil)
xavier@3368
    36
xavier@3368
    37
    //swipe acctions types
xavier@3368
    38
    var buttonDisplayMode: ButtonDisplayMode = .titleAndImage
xavier@3368
    39
    var buttonStyle: ButtonStyle = .backgroundColor
andreas@3208
    40
    
andreas@3151
    41
    // MARK: - Outlets
andreas@3208
    42
    
dirk@2067
    43
    @IBOutlet weak var enableFilterButton: UIBarButtonItem!
dirk@2067
    44
    @IBOutlet weak var textFilterButton: UIBarButtonItem!
andreas@3151
    45
    @IBOutlet var showFoldersButton: UIBarButtonItem!
andreas@3208
    46
    
andreas@3151
    47
    // MARK: - Life Cycle
andreas@3208
    48
    
dirk@275
    49
    override func viewDidLoad() {
ylandert@935
    50
        super.viewDidLoad()
dirk@2189
    51
        title = NSLocalizedString("Inbox", comment: "General name for (unified) inbox")
igor@1284
    52
        UIHelper.emailListTableHeight(self.tableView)
andreas@3163
    53
        self.textFilterButton.isEnabled = false
igor@1301
    54
        addSearchBar()
dirk@275
    55
    }
andreas@3208
    56
    
dirk@784
    57
    override func viewWillAppear(_ animated: Bool) {
igor@1301
    58
        super.viewWillAppear(animated)
xavier@2325
    59
        self.navigationController?.setToolbarHidden(false, animated: true)
dirk@1344
    60
        if MiscUtil.isUnitTest() {
dirk@1344
    61
            return
dirk@1344
    62
        }
andreas@3223
    63
dirk@1826
    64
        setDefaultColors()
andreas@3151
    65
        setup()
andreas@3208
    66
        
dirk@2191
    67
        // Mark this folder as having been looked at by the user
andreas@3151
    68
        updateLastLookAt()
andreas@3151
    69
        setupFoldersBarButton()
andreas@3151
    70
    }
andreas@3208
    71
    
andreas@3151
    72
    // MARK: - NavigationBar
andreas@3208
    73
    
andreas@3151
    74
    private func hideFoldersNavigationBarButton() {
andreas@3151
    75
        self.showFoldersButton.isEnabled = false
andreas@3151
    76
        self.showFoldersButton.tintColor = UIColor.clear
andreas@3151
    77
    }
andreas@3208
    78
    
andreas@3151
    79
    private func showFoldersNavigationBarButton() {
andreas@3151
    80
        self.showFoldersButton.isEnabled = true
andreas@3151
    81
        self.showFoldersButton.tintColor = nil
andreas@3151
    82
    }
andreas@3208
    83
    
andreas@3151
    84
    private func resetModel() {
andreas@3223
    85
        if folderToShow != nil {
andreas@3291
    86
            model = EmailListViewModel(delegate: self,
andreas@3291
    87
                                       messageSyncService: appConfig.messageSyncService,
andreas@3291
    88
                                       folderToShow: folderToShow)
xavier@2585
    89
        }
dirk@1348
    90
    }
andreas@3208
    91
    
andreas@3151
    92
    private func setup() {
andreas@3289
    93
        if noAccountsExist() {
andreas@3272
    94
            // No account exists. Show account setup.
andreas@3272
    95
            performSegue(withIdentifier:.segueAddNewAccount, sender: self)
andreas@3289
    96
        } else if let vm = model {
andreas@3223
    97
            // We came back from e.g EmailView ...
andreas@3223
    98
            updateFilterText()
andreas@3223
    99
            // ... so we want to update "seen" status
andreas@3226
   100
            vm.reloadData()
andreas@3272
   101
        } else if folderToShow == nil {
andreas@3223
   102
            // We have not been created to show a specific folder, thus we show unified inbox
andreas@3151
   103
            folderToShow = UnifiedInbox()
andreas@3223
   104
            resetModel()
andreas@3272
   105
        } else if model == nil {
andreas@3223
   106
            // We still got no model, because:
andreas@3223
   107
            // - We are not coming back from a pushed view (for instance ComposeEmailView)
andreas@3223
   108
            // - We are not a UnifiedInbox
andreas@3226
   109
            // So we have been created to show a specific folder. Show it!
andreas@3223
   110
            resetModel()
andreas@3151
   111
        }
andreas@3272
   112
andreas@3151
   113
        self.title = realNameOfFolderToShow()
andreas@2683
   114
    }
andreas@3223
   115
andreas@3223
   116
    private func weCameBackFromAPushedView() -> Bool {
andreas@3223
   117
        return model != nil
andreas@3223
   118
    }
andreas@3208
   119
    
andreas@3151
   120
    private func noAccountsExist() -> Bool {
andreas@3151
   121
        return Account.all().isEmpty
igor@1301
   122
    }
andreas@3208
   123
    
andreas@3151
   124
    private func setupFoldersBarButton() {
andreas@3151
   125
        if let size = navigationController?.viewControllers.count, size > 1 {
andreas@3151
   126
            hideFoldersNavigationBarButton()
andreas@3151
   127
        } else {
andreas@3151
   128
            showFoldersNavigationBarButton()
xavier@2132
   129
        }
igor@1338
   130
    }
andreas@3208
   131
    
andreas@3151
   132
    private func addSearchBar() {
igor@1301
   133
        searchController.searchResultsUpdater = self
igor@1301
   134
        searchController.dimsBackgroundDuringPresentation = false
igor@1301
   135
        searchController.delegate = self
igor@1301
   136
        definesPresentationContext = true
igor@1301
   137
        tableView.tableHeaderView = searchController.searchBar
xavier@3209
   138
        tableView.setContentOffset(CGPoint(x: 0.0, y: searchController.searchBar.frame.size.height), animated: false)
igor@1301
   139
    }
andreas@3208
   140
    
andreas@3151
   141
    // MARK: - Other
andreas@3208
   142
    
andreas@3151
   143
    private func realNameOfFolderToShow() -> String? {
andreas@3224
   144
        return folderToShow?.realName
andreas@2697
   145
    }
andreas@3208
   146
    
andreas@3151
   147
    private func configure(cell: EmailListViewCell, for indexPath: IndexPath) {
andreas@3151
   148
        // Configure lightweight stuff on main thread ...
andreas@3151
   149
        guard let saveModel = model else {
andreas@3151
   150
            return
xavier@2967
   151
        }
andreas@3151
   152
        guard let row = saveModel.row(for: indexPath) else {
andreas@3151
   153
            Log.shared.errorAndCrash(component: #function, errorString: "We should have a row here")
andreas@3151
   154
            return
andreas@3151
   155
        }
andreas@3151
   156
        cell.senderLabel.text = row.from
andreas@3151
   157
        cell.subjectLabel.text = row.subject
andreas@3151
   158
        cell.summaryLabel.text = row.bodyPeek
andreas@3151
   159
        cell.isFlagged = row.isFlagged
andreas@3151
   160
        cell.isSeen = row.isSeen
andreas@3151
   161
        cell.hasAttachment = row.showAttchmentIcon
andreas@3151
   162
        cell.dateLabel.text = row.dateText
andreas@3151
   163
        // Set image from cache if any
andreas@3151
   164
        cell.setContactImage(image: row.senderContactImage)
andreas@3208
   165
        
andreas@3151
   166
        let op = BlockOperation() { [weak self] in
andreas@3419
   167
            MessageModel.performAndWait {
andreas@3419
   168
                // ... and expensive computations in background
andreas@3419
   169
                guard let strongSelf = self else {
andreas@3419
   170
                    // View is gone, nothing to do.
andreas@3419
   171
                    return
andreas@3419
   172
                }
andreas@3419
   173
                
andreas@3419
   174
                var senderImage: UIImage?
andreas@3419
   175
                if row.senderContactImage == nil {
andreas@3419
   176
                    // image for identity has not been cached yet
andreas@3419
   177
                    // Get and cache it here in the background ...
andreas@3419
   178
                    senderImage = strongSelf.model?.senderImage(forCellAt: indexPath)
andreas@3419
   179
                    
andreas@3419
   180
                    // ... and set it on the main queue
andreas@3419
   181
                    DispatchQueue.main.async {
andreas@3419
   182
                        if senderImage != nil && senderImage != cell.contactImageView.image {
andreas@3419
   183
                            cell.contactImageView.image  = senderImage
andreas@3419
   184
                        }
andreas@3220
   185
                    }
andreas@3220
   186
                }
andreas@3419
   187
                
andreas@3419
   188
                let pEpRatingImage = strongSelf.model?.pEpRatingColorImage(forCellAt: indexPath)
andreas@3419
   189
                
andreas@3419
   190
                // In theory we want to set all data in *one* async call. But as pEpRatingColorImage takes
andreas@3419
   191
                // very long, we are setting the sender image seperatelly.
andreas@3419
   192
                DispatchQueue.main.async {
andreas@3419
   193
                    if pEpRatingImage != nil {
andreas@3419
   194
                        cell.setPepRatingImage(image: pEpRatingImage)
andreas@3419
   195
                    }
andreas@3151
   196
                }
andreas@3151
   197
            }
andreas@3151
   198
        }
andreas@3151
   199
        queue(operation: op, for: indexPath)
xavier@2967
   200
    }
andreas@3505
   201
andreas@3505
   202
    private func showComposeView() {
andreas@3505
   203
        self.performSegue(withIdentifier: SegueIdentifier.segueEditDraft, sender: self)
andreas@3505
   204
    }
andreas@3505
   205
andreas@3505
   206
    private func showEmail(forCellAt indexPath: IndexPath) {
andreas@3505
   207
        performSegue(withIdentifier: SegueIdentifier.segueShowEmail, sender: self)
andreas@3505
   208
        guard let vm = model else {
andreas@3505
   209
            Log.shared.errorAndCrash(component: #function, errorString: "No model.")
andreas@3505
   210
            return
andreas@3505
   211
        }
andreas@3505
   212
        vm.markRead(forIndexPath: indexPath)
andreas@3505
   213
    }
andreas@3208
   214
    
andreas@3151
   215
    // MARK: - Actions
andreas@3208
   216
    
andreas@3151
   217
    @IBAction func filterButtonHasBeenPressed(_ sender: UIBarButtonItem) {
andreas@3163
   218
        guard let vm = model else {
andreas@3163
   219
            Log.shared.errorAndCrash(component: #function, errorString: "We should have a model here")
andreas@3163
   220
            return
andreas@3163
   221
        }
andreas@3163
   222
        vm.isFilterEnabled = !vm.isFilterEnabled
xavier@3193
   223
        updateFilterButtonView()
xavier@1832
   224
    }
andreas@3208
   225
    
xavier@3193
   226
    func updateFilterButtonView() {
andreas@3163
   227
        guard let vm = model else {
andreas@3163
   228
            Log.shared.errorAndCrash(component: #function, errorString: "We should have a model here")
andreas@3163
   229
            return
andreas@3163
   230
        }
andreas@3208
   231
        
andreas@3163
   232
        textFilterButton.isEnabled = vm.isFilterEnabled
andreas@3163
   233
        if textFilterButton.isEnabled {
andreas@3163
   234
            enableFilterButton.image = UIImage(named: "unread-icon-active")
andreas@3163
   235
            updateFilterText()
andreas@3163
   236
        } else {
andreas@3163
   237
            textFilterButton.title = ""
andreas@3163
   238
            enableFilterButton.image = UIImage(named: "unread-icon")
andreas@3163
   239
        }
andreas@3163
   240
    }
andreas@3208
   241
    
andreas@3163
   242
    func updateFilterText() {
xavier@3193
   243
        if let vm = model, let txt = vm.activeFilter?.title {
andreas@3163
   244
            textFilterButton.title = "Filter by: " + txt
andreas@3163
   245
        }
andreas@3151
   246
    }
andreas@3208
   247
    
dirk@31
   248
    // MARK: - UITableViewDataSource
andreas@3208
   249
    
dirk@784
   250
    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
andreas@3151
   251
        return model?.rowCount ?? 0
dirk@31
   252
    }
andreas@3208
   253
    
dirk@784
   254
    override func tableView(_ tableView: UITableView,
dirk@784
   255
                            cellForRowAt indexPath: IndexPath) -> UITableViewCell {
andreas@3151
   256
        guard let cell = tableView.dequeueReusableCell(withIdentifier: EmailListViewCell.storyboardId,
andreas@3151
   257
                                                       for: indexPath) as? EmailListViewCell
andreas@3151
   258
            else {
andreas@3151
   259
                Log.shared.errorAndCrash(component: #function, errorString: "Wrong cell!")
andreas@3151
   260
                return UITableViewCell()
andreas@3151
   261
        }
xavier@3368
   262
        cell.delegate = self
andreas@3151
   263
        configure(cell: cell, for: indexPath)
dirk@31
   264
        return cell
dirk@31
   265
    }
andreas@3208
   266
    
andreas@3513
   267
    // MARK: - SwipeTableViewCellDelegate
xavier@3368
   268
xavier@3368
   269
    func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath, for orientation: SwipeActionsOrientation) -> [SwipeAction]? {
xavier@3368
   270
        if indexPath.section == 0 {
andreas@3513
   271
            /// Create swipe actions, taking the currently displayed folder into account
andreas@3513
   272
            var swipeActions = [SwipeAction]()
xavier@3368
   273
            let deleteAction = SwipeAction(style: .destructive, title: "Delete") { action, indexPath in
xavier@3369
   274
                self.deleteAction(forCellAt: indexPath)
xavier@3368
   275
            }
xavier@3368
   276
            configure(action: deleteAction, with: .trash)
andreas@3513
   277
            swipeActions.append(deleteAction)
xavier@3368
   278
xavier@3368
   279
            let flagAction = SwipeAction(style: .default, title: "Flag") { action, indexPath in
xavier@3369
   280
                self.flagAction(forCellAt: indexPath)
xavier@3368
   281
            }
xavier@3368
   282
            flagAction.hidesWhenSelected = true
xavier@3368
   283
            configure(action: flagAction, with: .flag)
andreas@3513
   284
            swipeActions.append(flagAction)
xavier@3368
   285
andreas@3513
   286
            guard let folder = folderToShow else {
andreas@3513
   287
                Log.shared.errorAndCrash(component: #function, errorString: "No folder")
andreas@3513
   288
                return nil
xavier@3368
   289
            }
andreas@3513
   290
            if folder.folderType != .drafts {
andreas@3513
   291
                // Do not add "more" actions (reply...) to drafted mails.
andreas@3513
   292
                let moreAction = SwipeAction(style: .default, title: "More") { action, indexPath in
andreas@3513
   293
                    self.moreAction(forCellAt: indexPath)
andreas@3513
   294
                }
andreas@3513
   295
                moreAction.hidesWhenSelected = true
andreas@3513
   296
                configure(action: moreAction, with: .more)
andreas@3513
   297
                swipeActions.append(moreAction)
andreas@3513
   298
            }
andreas@3513
   299
            return (orientation == .right ?   swipeActions : nil)
xavier@3368
   300
        }
xavier@3368
   301
xavier@3368
   302
        return nil
xavier@3368
   303
    }
xavier@3368
   304
xavier@3368
   305
    func tableView(_ tableView: UITableView, editActionsOptionsForRowAt indexPath: IndexPath, for orientation: SwipeActionsOrientation) -> SwipeTableOptions {
xavier@3368
   306
        var options = SwipeTableOptions()
xavier@3368
   307
        options.expansionStyle = .destructive
xavier@3368
   308
        options.transitionStyle = .border
xavier@3368
   309
        options.buttonSpacing = 11
xavier@3368
   310
        return options
xavier@3368
   311
    }
xavier@3368
   312
xavier@3368
   313
    func configure(action: SwipeAction, with descriptor: ActionDescriptor) {
xavier@3368
   314
        action.title = descriptor.title(forDisplayMode: buttonDisplayMode)
xavier@3368
   315
        action.image = descriptor.image(forStyle: buttonStyle, displayMode: buttonDisplayMode)
xavier@3368
   316
xavier@3368
   317
        switch buttonStyle {
xavier@3368
   318
        case .backgroundColor:
xavier@3368
   319
            action.backgroundColor = descriptor.color
xavier@3368
   320
        case .circular:
xavier@3368
   321
            action.backgroundColor = .clear
xavier@3368
   322
            action.textColor = descriptor.color
xavier@3368
   323
            action.font = .systemFont(ofSize: 13)
xavier@3368
   324
            action.transitionDelegate = ScaleTransition.default
xavier@3368
   325
        }
xavier@3368
   326
    }
andreas@3208
   327
    
andreas@3151
   328
    override func tableView(_ tableView: UITableView, didEndDisplaying cell: UITableViewCell, forRowAt indexPath: IndexPath) {
andreas@3151
   329
        cancelOperation(for: indexPath)
dirk@744
   330
    }
andreas@3208
   331
    
andreas@3151
   332
    override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
andreas@3505
   333
        guard let folder = folderToShow else {
andreas@3505
   334
            Log.shared.errorAndCrash(component: #function, errorString: "No folder")
andreas@3505
   335
            return
andreas@3505
   336
        }
andreas@3151
   337
        lastSelectedIndexPath = indexPath
andreas@3151
   338
        tableView.selectRow(at: indexPath, animated: true, scrollPosition: .none)
andreas@3505
   339
andreas@3505
   340
        if folder.folderType == .drafts {
andreas@3505
   341
            showComposeView()
andreas@3505
   342
        } else {
andreas@3505
   343
            showEmail(forCellAt: indexPath)
andreas@3425
   344
        }
dirk@744
   345
    }
andreas@3278
   346
andreas@3291
   347
    // Implemented to get informed about the scrolling position.
andreas@3291
   348
    // If the user has scrolled down (almost) to the end, we need to get older emails to display.
andreas@3291
   349
    override func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell,
andreas@3291
   350
                            forRowAt indexPath: IndexPath) {
andreas@3278
   351
        guard let vm = model else {
andreas@3291
   352
            Log.shared.errorAndCrash(component: #function, errorString: "No model.")
andreas@3291
   353
            return
andreas@3278
   354
        }
andreas@3291
   355
        vm.fetchOlderMessagesIfRequired(forIndexPath: indexPath)
andreas@3278
   356
    }
andreas@3278
   357
andreas@3151
   358
    // MARK: - Queue Handling
andreas@3208
   359
    
andreas@3151
   360
    private func queue(operation op:Operation, for indexPath: IndexPath) {
andreas@3151
   361
        operations[indexPath] = op
andreas@3151
   362
        queue.addOperation(op)
dirk@1507
   363
    }
andreas@3208
   364
    
andreas@3151
   365
    private func cancelOperation(for indexPath:IndexPath) {
andreas@3151
   366
        guard let op = operations.removeValue(forKey: indexPath) else {
andreas@3151
   367
            return
dirk@744
   368
        }
andreas@3151
   369
        if !op.isCancelled  {
andreas@3151
   370
            op.cancel()
dirk@1507
   371
        }
dirk@744
   372
    }
andreas@3291
   373
andreas@3291
   374
    // MARK: -
andreas@3291
   375
andreas@3151
   376
    override func didReceiveMemoryWarning() {
andreas@3151
   377
        model?.freeMemory()
andreas@3151
   378
    }
andreas@3151
   379
}
andreas@3151
   380
andreas@3151
   381
// MARK: - UISearchResultsUpdating, UISearchControllerDelegate
andreas@3151
   382
andreas@3151
   383
extension EmailListViewController: UISearchResultsUpdating, UISearchControllerDelegate {
andreas@3151
   384
    public func updateSearchResults(for searchController: UISearchController) {
andreas@3151
   385
        guard let vm = model, let searchText = searchController.searchBar.text else {
andreas@3151
   386
            return
igor@1242
   387
        }
andreas@3163
   388
        vm.setSearchFilter(forSearchText: searchText)
igor@1242
   389
    }
andreas@3208
   390
    
andreas@3151
   391
    func didDismissSearchController(_ searchController: UISearchController) {
andreas@3151
   392
        guard let vm = model else {
andreas@3151
   393
            return
andreas@3151
   394
        }
andreas@3151
   395
        vm.removeSearchFilter()
andreas@3151
   396
    }
andreas@3151
   397
}
xavier@1623
   398
andreas@3151
   399
// MARK: - EmailListModelDelegate
andreas@3151
   400
andreas@3151
   401
extension EmailListViewController: EmailListViewModelDelegate {
andreas@3151
   402
    func emailListViewModel(viewModel: EmailListViewModel, didInsertDataAt indexPath: IndexPath) {
andreas@3166
   403
        tableView.beginUpdates()
andreas@3151
   404
        tableView.insertRows(at: [indexPath], with: .automatic)
andreas@3151
   405
        tableView.endUpdates()
andreas@3151
   406
    }
andreas@3208
   407
    
andreas@3151
   408
    func emailListViewModel(viewModel: EmailListViewModel, didRemoveDataAt indexPath: IndexPath) {
andreas@3151
   409
        tableView.beginUpdates()
andreas@3151
   410
        tableView.deleteRows(at: [indexPath], with: .automatic)
andreas@3151
   411
        tableView.endUpdates()
andreas@3151
   412
    }
andreas@3208
   413
    
andreas@3151
   414
    func emailListViewModel(viewModel: EmailListViewModel, didUpdateDataAt indexPath: IndexPath) {
andreas@3151
   415
        tableView.beginUpdates()
andreas@3151
   416
        tableView.reloadRows(at: [indexPath], with: .none)
andreas@3151
   417
        tableView.endUpdates()
andreas@3151
   418
    }
andreas@3208
   419
    
andreas@3151
   420
    func updateView() {
andreas@3151
   421
        self.tableView.reloadData()
andreas@3151
   422
    }
andreas@3151
   423
}
andreas@3151
   424
andreas@3151
   425
// MARK: - ActionSheet & ActionSheet Actions
andreas@3151
   426
andreas@3151
   427
extension EmailListViewController {
andreas@3166
   428
    func showMoreActionSheet(forRowAt indexPath: IndexPath) {
andreas@3151
   429
        lastSelectedIndexPath = indexPath
igor@1242
   430
        let alertControler = UIAlertController(title: nil, message: nil, preferredStyle: .actionSheet)
igor@1438
   431
        alertControler.view.tintColor = .pEpGreen
igor@1242
   432
        let cancelAction = createCancelAction()
andreas@3151
   433
        let replyAction = createReplyAction()
andreas@3151
   434
        let replyAllAction = createReplyAllAction()
andreas@3151
   435
        let forwardAction = createForwardAction()
igor@1242
   436
        alertControler.addAction(cancelAction)
igor@1242
   437
        alertControler.addAction(replyAction)
xavier@1620
   438
        alertControler.addAction(replyAllAction)
igor@1242
   439
        alertControler.addAction(forwardAction)
igor@1414
   440
        if let popoverPresentationController = alertControler.popoverPresentationController {
andreas@3151
   441
            popoverPresentationController.sourceView = tableView
igor@1414
   442
        }
igor@1242
   443
        present(alertControler, animated: true, completion: nil)
igor@1242
   444
    }
andreas@3208
   445
    
andreas@3151
   446
    // MARK: Action Sheet Actions
andreas@3208
   447
    
igor@1242
   448
    func createCancelAction() -> UIAlertAction {
andreas@3151
   449
        return  UIAlertAction(title: "Cancel", style: .cancel) { (action) in
andreas@3151
   450
            self.tableView.beginUpdates()
andreas@3151
   451
            self.tableView.setEditing(false, animated: true)
andreas@3151
   452
            self.tableView.endUpdates()
igor@1242
   453
        }
igor@1242
   454
    }
andreas@3208
   455
    
andreas@3151
   456
    func createReplyAction() ->  UIAlertAction {
andreas@3151
   457
        return UIAlertAction(title: "Reply", style: .default) { (action) in
andreas@3151
   458
            self.performSegue(withIdentifier: .segueReply, sender: self)
xavier@1620
   459
        }
xavier@1620
   460
    }
andreas@3208
   461
    
andreas@3151
   462
    func createReplyAllAction() ->  UIAlertAction {
andreas@3151
   463
        return UIAlertAction(title: "Reply All", style: .default) { (action) in
andreas@3151
   464
            self.performSegue(withIdentifier: .segueReplyAll, sender: self)
igor@1242
   465
        }
igor@1242
   466
    }
andreas@3208
   467
    
andreas@3151
   468
    func createForwardAction() -> UIAlertAction {
andreas@3151
   469
        return UIAlertAction(title: "Forward", style: .default) { (action) in
andreas@3151
   470
            self.performSegue(withIdentifier: .segueForward, sender: self)
xavier@2369
   471
        }
igor@1301
   472
    }
igor@1301
   473
}
igor@1338
   474
andreas@3151
   475
// MARK: - TableViewCell Actions
andreas@3151
   476
andreas@3151
   477
extension EmailListViewController {
andreas@3151
   478
    private func createRowAction(image: UIImage?,
xavier@3266
   479
                                 action: @escaping (UITableViewRowAction, IndexPath) -> Void
xavier@3266
   480
        ) -> UITableViewRowAction {
xavier@3266
   481
        let rowAction = UITableViewRowAction(style: .normal, title: nil, handler: action)
andreas@3151
   482
        if let theImage = image {
andreas@3151
   483
            let iconColor = UIColor(patternImage: theImage)
andreas@3151
   484
            rowAction.backgroundColor = iconColor
andreas@3151
   485
        }
andreas@3151
   486
        return rowAction
andreas@3151
   487
    }
andreas@3208
   488
    
xavier@3369
   489
    func flagAction(forCellAt indexPath: IndexPath) {
andreas@3151
   490
        guard let row = model?.row(for: indexPath) else {
andreas@3151
   491
            Log.shared.errorAndCrash(component: #function, errorString: "No data for indexPath!")
xavier@3369
   492
            return
andreas@3151
   493
        }
xavier@3369
   494
        if row.isFlagged {
xavier@3369
   495
            model?.unsetFlagged(forIndexPath: indexPath)
xavier@3369
   496
        } else {
xavier@3369
   497
            model?.setFlagged(forIndexPath: indexPath)
andreas@3151
   498
        }
xavier@3369
   499
        tableView.beginUpdates()
xavier@3369
   500
        tableView.setEditing(false, animated: true)
xavier@3369
   501
        tableView.reloadRows(at: [indexPath], with: .none)
xavier@3369
   502
        tableView.endUpdates()
andreas@3151
   503
    }
andreas@3208
   504
    
xavier@3369
   505
    func deleteAction(forCellAt indexPath: IndexPath) {
xavier@3369
   506
        model?.delete(forIndexPath: indexPath) // mark for deletion/trash
andreas@3151
   507
    }
andreas@3208
   508
    
xavier@3369
   509
    func moreAction(forCellAt indexPath: IndexPath) {
xavier@3369
   510
        self.showMoreActionSheet(forRowAt: indexPath)
andreas@3151
   511
    }
andreas@3151
   512
}
andreas@3151
   513
andreas@3151
   514
// MARK: - SegueHandlerType
igor@1338
   515
igor@1338
   516
extension EmailListViewController: SegueHandlerType {
andreas@3208
   517
    
igor@1338
   518
    enum SegueIdentifier: String {
igor@1338
   519
        case segueAddNewAccount
igor@1338
   520
        case segueShowEmail
igor@1338
   521
        case segueCompose
xavier@2715
   522
        case segueReply
xavier@1623
   523
        case segueReplyAll
xavier@1664
   524
        case segueForward
andreas@3505
   525
        case segueEditDraft
xavier@1865
   526
        case segueFilter
xavier@2248
   527
        case segueFolderViews
igor@1338
   528
        case noSegue
igor@1338
   529
    }
andreas@3208
   530
    
igor@1338
   531
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
andreas@3505
   532
        let segueId = segueIdentifier(for: segue)
andreas@3505
   533
        switch segueId {
andreas@3505
   534
        case .segueReply,
andreas@3505
   535
             .segueReplyAll,
andreas@3505
   536
             .segueForward,
andreas@3505
   537
             .segueCompose,
andreas@3505
   538
             .segueEditDraft:
andreas@3505
   539
            setupComposeViewController(for: segue)
andreas@3111
   540
        case .segueShowEmail:
andreas@2850
   541
            guard let vc = segue.destination as? EmailViewController,
andreas@3151
   542
                let indexPath = lastSelectedIndexPath,
andreas@3208
   543
                let message = model?.message(representedByRowAt: indexPath) else {
andreas@2850
   544
                    Log.shared.errorAndCrash(component: #function, errorString: "Segue issue")
andreas@2850
   545
                    return
igor@1338
   546
            }
andreas@2850
   547
            vc.appConfig = appConfig
andreas@3151
   548
            vc.message = message
andreas@3223
   549
            vc.folderShow = folderToShow
andreas@3166
   550
            vc.messageId = indexPath.row //that looks wrong
andreas@2850
   551
        case .segueFilter:
andreas@2850
   552
            guard let destiny = segue.destination as? FilterTableViewController  else {
andreas@2850
   553
                Log.shared.errorAndCrash(component: #function, errorString: "Segue issue")
andreas@2850
   554
                return
andreas@2850
   555
            }
andreas@2850
   556
            destiny.appConfig = appConfig
andreas@3163
   557
            destiny.filterDelegate = model
andreas@2850
   558
            destiny.inFolder = false
andreas@3223
   559
            destiny.filterEnabled = folderToShow?.filter
andreas@2850
   560
            destiny.hidesBottomBarWhenPushed = true
andreas@2850
   561
        case .segueAddNewAccount:
andreas@2850
   562
            guard let vc = segue.destination as? LoginTableViewController  else {
andreas@2850
   563
                Log.shared.errorAndCrash(component: #function, errorString: "Segue issue")
andreas@2850
   564
                return
andreas@2850
   565
            }
andreas@2850
   566
            vc.appConfig = appConfig
andreas@2850
   567
            vc.hidesBottomBarWhenPushed = true
xavier@1664
   568
            break
andreas@2850
   569
        case .segueFolderViews:
andreas@2850
   570
            guard let vC = segue.destination as? FolderTableViewController  else {
andreas@2850
   571
                Log.shared.errorAndCrash(component: #function, errorString: "Segue issue")
andreas@2850
   572
                return
xavier@1865
   573
            }
andreas@2850
   574
            vC.appConfig = appConfig
andreas@2850
   575
            vC.hidesBottomBarWhenPushed = true
xavier@1865
   576
            break
andreas@2850
   577
        default:
andreas@2850
   578
            Log.shared.errorAndCrash(component: #function, errorString: "Unhandled segue")
dirk@1694
   579
            break
igor@1338
   580
        }
andreas@2838
   581
    }
andreas@3208
   582
    
andreas@3166
   583
    @IBAction func segueUnwindAccountAdded(segue: UIStoryboardSegue) {
andreas@3151
   584
        // nothing to do.
andreas@3150
   585
    }
andreas@3505
   586
andreas@3505
   587
    private func setupComposeViewController(for segue: UIStoryboardSegue) {
andreas@3505
   588
        let segueId = segueIdentifier(for: segue)
andreas@3505
   589
        guard
andreas@3505
   590
            let nav = segue.destination as? UINavigationController,
andreas@3505
   591
            let composeVc = nav.topViewController as? ComposeTableViewController,
andreas@3505
   592
            let composeMode = composeMode(for: segueId) else {
andreas@3505
   593
                Log.shared.errorAndCrash(component: #function,
andreas@3505
   594
                                         errorString: "composeViewController setup issue")
andreas@3505
   595
                return
andreas@3505
   596
        }
andreas@3505
   597
        composeVc.appConfig = appConfig
andreas@3505
   598
        composeVc.composeMode = composeMode
andreas@3505
   599
        composeVc.origin = folderToShow?.account.user
andreas@3505
   600
        if composeMode != .normal {
andreas@3505
   601
            // This is not a simple compose (but reply, forward or such),
andreas@3505
   602
            // thus we have to pass the original meaasge.
andreas@3505
   603
            guard
andreas@3505
   604
                let indexPath = lastSelectedIndexPath,
andreas@3505
   605
                let message = model?.message(representedByRowAt: indexPath) else {
andreas@3505
   606
                    Log.shared.errorAndCrash(component: #function,
andreas@3505
   607
                                             errorString: "No original message")
andreas@3505
   608
                    return
andreas@3505
   609
            }
andreas@3505
   610
            composeVc.originalMessage = message
andreas@3505
   611
        }
andreas@3505
   612
    }
andreas@3505
   613
andreas@3505
   614
    private func composeMode(for segueId: SegueIdentifier) -> ComposeTableViewController.ComposeMode? {
andreas@3505
   615
        switch segueId {
andreas@3505
   616
        case .segueReply:
andreas@3505
   617
            return .replyFrom
andreas@3505
   618
        case .segueReplyAll:
andreas@3505
   619
            return .replyAll
andreas@3505
   620
        case .segueForward:
andreas@3505
   621
            return .forward
andreas@3505
   622
        case .segueCompose:
andreas@3505
   623
            return .normal
andreas@3505
   624
        case .segueEditDraft:
andreas@3505
   625
            return .draft
andreas@3505
   626
        default:
andreas@3505
   627
            return nil
andreas@3505
   628
        }
andreas@3505
   629
    }
dirk@1348
   630
}
xavier@3368
   631
xavier@3368
   632
//enums to simplify configurations
xavier@3368
   633
xavier@3368
   634
enum ActionDescriptor {
xavier@3368
   635
    case read, more, flag, trash
xavier@3368
   636
xavier@3368
   637
    func title(forDisplayMode displayMode: ButtonDisplayMode) -> String? {
xavier@3368
   638
        guard displayMode != .imageOnly else { return nil }
xavier@3368
   639
xavier@3368
   640
        switch self {
xavier@3368
   641
        case .read: return NSLocalizedString("Read", comment: "read button")
xavier@3368
   642
        case .more: return NSLocalizedString("More", comment: "more button")
xavier@3368
   643
        case .flag: return NSLocalizedString("Flag", comment: "read button")
xavier@3368
   644
        case .trash: return NSLocalizedString("Trash", comment: "Trash button")
xavier@3368
   645
        }
xavier@3368
   646
    }
xavier@3368
   647
xavier@3368
   648
    func image(forStyle style: ButtonStyle, displayMode: ButtonDisplayMode) -> UIImage? {
xavier@3368
   649
        guard displayMode != .titleOnly else { return nil }
xavier@3368
   650
xavier@3368
   651
        let name: String
xavier@3368
   652
        switch self {
xavier@3368
   653
        case .read: name = "read"
xavier@3368
   654
        case .more: name = "more"
xavier@3368
   655
        case .flag: name = "flag"
xavier@3368
   656
        case .trash: name = "trash"
xavier@3368
   657
        }
xavier@3368
   658
xavier@3368
   659
        return UIImage(named: "swipe-" + name)
xavier@3368
   660
    }
xavier@3368
   661
xavier@3368
   662
    var color: UIColor {
xavier@3368
   663
        switch self {
xavier@3368
   664
        case .read: return #colorLiteral(red: 0.2980392157, green: 0.8509803922, blue: 0.3921568627, alpha: 1)
xavier@3368
   665
        case .more: return #colorLiteral(red: 0.7803494334, green: 0.7761332393, blue: 0.7967314124, alpha: 1)
xavier@3368
   666
        case .flag: return #colorLiteral(red: 1, green: 0.5803921569, blue: 0, alpha: 1)
xavier@3368
   667
        case .trash: return #colorLiteral(red: 1, green: 0.2352941176, blue: 0.1882352941, alpha: 1)
xavier@3368
   668
        }
xavier@3368
   669
    }
xavier@3368
   670
}
xavier@3368
   671
xavier@3368
   672
enum ButtonDisplayMode {
xavier@3368
   673
    case titleAndImage, titleOnly, imageOnly
xavier@3368
   674
}
xavier@3368
   675
xavier@3368
   676
enum ButtonStyle {
xavier@3368
   677
    case backgroundColor, circular
xavier@3368
   678
}