Rewrite handling of collection view and table view reloading for reliability.

platform-darwin/External/Pearl

@@ -1 +1 @@
-Subproject commit 5e5eaa1344a6d2c7c058e7ca458387b43489bb59
+Subproject commit 8d390f176b2f2997b75a18cfc6446b798667c54a

platform-darwin/MasterPassword-iOS.xcodeproj/project.pbxproj

@@ -47,7 +47,7 @@
 		93D399D7E08A142776A74CB8 /* MPOverlayViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = 93D395105935859D71679931 /* MPOverlayViewController.m */; };
 		93D399E4BC1E092A8C8B12AE /* NSOrderedSetOrArray.h in Headers */ = {isa = PBXBuildFile; fileRef = 93D39FBF8FCEB4C106272334 /* NSOrderedSetOrArray.h */; };
 		93D39A27F2506C6FEEF9C588 /* MPAlgorithmV2.m in Sources */ = {isa = PBXBuildFile; fileRef = 93D399A8E3181B442D347CD7 /* MPAlgorithmV2.m */; };
-		93D39A53D76CA70786423458 /* UICollectionView+PearlReloadFromArray.h in Headers */ = {isa = PBXBuildFile; fileRef = 93D39246FC21C6E63E35D615 /* UICollectionView+PearlReloadFromArray.h */; };
+		93D39A53D76CA70786423458 /* UICollectionView+PearlReloadItems.h in Headers */ = {isa = PBXBuildFile; fileRef = 93D39246FC21C6E63E35D615 /* UICollectionView+PearlReloadItems.h */; };
 		93D39A5FF670957C0AF8298D /* MPPasswordCell.m in Sources */ = {isa = PBXBuildFile; fileRef = 93D39DEA995041A13DC9CAF7 /* MPPasswordCell.m */; };
 		93D39A8EA1C49CE43B63F47B /* PearlUICollectionView.m in Sources */ = {isa = PBXBuildFile; fileRef = 93D39D8A953779B35403AF6E /* PearlUICollectionView.m */; };
 		93D39AA4A0BE66A872CCC02E /* NSPersistentStore+PearlMigration.h in Headers */ = {isa = PBXBuildFile; fileRef = 93D397F4BAFFF7CF3F1B21A4 /* NSPersistentStore+PearlMigration.h */; };
@@ -58,7 +58,7 @@
 		93D39BA1EA3CAAC8A220B4A6 /* MPAppSettingsViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = 93D3916C1D8F1427DFBDEBCA /* MPAppSettingsViewController.m */; };
 		93D39BFB5F5F9337F6565DE3 /* UIView+Visible.h in Headers */ = {isa = PBXBuildFile; fileRef = 93D39B7B765546B1F1900CB7 /* UIView+Visible.h */; };
 		93D39C34FE35830EF5BE1D2A /* NSArray+Indexing.h in Headers */ = {isa = PBXBuildFile; fileRef = 93D396D04E57792A54D437AC /* NSArray+Indexing.h */; };
-		93D39D47FC623E91FC39D20C /* UICollectionView+PearlReloadFromArray.m in Sources */ = {isa = PBXBuildFile; fileRef = 93D3908DF8EABBD952065DC0 /* UICollectionView+PearlReloadFromArray.m */; };
+		93D39D47FC623E91FC39D20C /* UICollectionView+PearlReloadItems.m in Sources */ = {isa = PBXBuildFile; fileRef = 93D3908DF8EABBD952065DC0 /* UICollectionView+PearlReloadItems.m */; };
 		93D39D596A2E376D6F6F5DA1 /* MPCombinedViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = 93D393310223DDB35218467A /* MPCombinedViewController.m */; };
 		93D39D8F78978196D6ABDEDE /* MPNavigationController.m in Sources */ = {isa = PBXBuildFile; fileRef = 93D39CC01630D0421205C4C4 /* MPNavigationController.m */; };
 		93D39E281E3658B30550CB55 /* NSDictionary+Indexing.m in Sources */ = {isa = PBXBuildFile; fileRef = 93D39AA1EE2E1E7B81372240 /* NSDictionary+Indexing.m */; };
@@ -466,7 +466,7 @@
 /* Begin PBXFileReference section */
 		93D390519405B76CC6A57C4F /* MPCell.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MPCell.h; sourceTree = "<group>"; };
 		93D39067C0AFDC581794E2B8 /* NSArray+Indexing.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = "NSArray+Indexing.m"; sourceTree = "<group>"; };
-		93D3908DF8EABBD952065DC0 /* UICollectionView+PearlReloadFromArray.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = "UICollectionView+PearlReloadFromArray.m"; sourceTree = "<group>"; };
+		93D3908DF8EABBD952065DC0 /* UICollectionView+PearlReloadItems.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = "UICollectionView+PearlReloadItems.m"; sourceTree = "<group>"; };
 		93D390A3B351FEF1B9EDAB56 /* mpw-algorithm_v2.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; path = "mpw-algorithm_v2.c"; sourceTree = "<group>"; };
 		93D390A99850139D0FF0211E /* mpw-algorithm_v0.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; path = "mpw-algorithm_v0.c"; sourceTree = "<group>"; };
 		93D390FADEB325D8D54A957D /* PearlOverlay.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = PearlOverlay.m; sourceTree = "<group>"; };
@@ -477,7 +477,7 @@
 		93D3916C1D8F1427DFBDEBCA /* MPAppSettingsViewController.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = MPAppSettingsViewController.m; sourceTree = "<group>"; };
 		93D391943675426839501BB8 /* MPLogsViewController.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MPLogsViewController.h; sourceTree = "<group>"; };
 		93D391AA32F24290C424438E /* NSNotificationCenter+PearlEasyCleanup.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "NSNotificationCenter+PearlEasyCleanup.h"; sourceTree = "<group>"; };
-		93D39246FC21C6E63E35D615 /* UICollectionView+PearlReloadFromArray.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "UICollectionView+PearlReloadFromArray.h"; sourceTree = "<group>"; };
+		93D39246FC21C6E63E35D615 /* UICollectionView+PearlReloadItems.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "UICollectionView+PearlReloadItems.h"; sourceTree = "<group>"; };
 		93D3924D6F77E6BF41AC32D3 /* MPRootSegue.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MPRootSegue.h; sourceTree = "<group>"; };
 		93D3924EE15017F8A12CB436 /* MPPasswordsViewController.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = MPPasswordsViewController.m; sourceTree = "<group>"; };
 		93D392876BE5C011DE73B43F /* MPPopdownSegue.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MPPopdownSegue.h; sourceTree = "<group>"; };
@@ -3114,8 +3114,8 @@
 				DAFE462515039823003ABA7C /* Resources */,
 				DA250A16195665A100AC23F1 /* UICollectionReusableView+PearlDequeue.h */,
 				DA250A15195665A100AC23F1 /* UICollectionReusableView+PearlDequeue.m */,
-				93D39246FC21C6E63E35D615 /* UICollectionView+PearlReloadFromArray.h */,
+				93D39246FC21C6E63E35D615 /* UICollectionView+PearlReloadItems.h */,
-				93D3908DF8EABBD952065DC0 /* UICollectionView+PearlReloadFromArray.m */,
+				93D3908DF8EABBD952065DC0 /* UICollectionView+PearlReloadItems.m */,
 				DAFE4A63150399FF003ABA83 /* UIControl+PearlBlocks.h */,
 				DAFE4A63150399FF003ABA81 /* UIControl+PearlBlocks.m */,
 				DAFE4A63150399FF003ABA8B /* UIControl+PearlSelect.h */,
@@ -3249,7 +3249,7 @@
 				93D39536EB550E811CCD04BC /* UIResponder+PearlFirstResponder.h in Headers */,
 				93D393DB5325820241BA90A7 /* PearlSizedTextView.h in Headers */,
 				93D392A8777DC30C11361647 /* UITextView+PearlAttributes.h in Headers */,
-				93D39A53D76CA70786423458 /* UICollectionView+PearlReloadFromArray.h in Headers */,
+				93D39A53D76CA70786423458 /* UICollectionView+PearlReloadItems.h in Headers */,
 				93D39AA4A0BE66A872CCC02E /* NSPersistentStore+PearlMigration.h in Headers */,
 				93D399E4BC1E092A8C8B12AE /* NSOrderedSetOrArray.h in Headers */,
 				93D3959696396A91961C6148 /* UIView+AlphaScale.h in Headers */,
@@ -3959,7 +3959,7 @@
 				DAA141201922FF020032B392 /* PearlTween.m in Sources */,
 				93D391ECBD9BD2C64115B5DD /* PearlSizedTextView.m in Sources */,
 				93D39E34FD28D24FE3442C48 /* UITextView+PearlAttributes.m in Sources */,
-				93D39D47FC623E91FC39D20C /* UICollectionView+PearlReloadFromArray.m in Sources */,
+				93D39D47FC623E91FC39D20C /* UICollectionView+PearlReloadItems.m in Sources */,
 				93D3928D629EA563F9EC4909 /* NSPersistentStore+PearlMigration.m in Sources */,
 				93D392A33CCE85431E910C7B /* NSOrderedSetOrArray.m in Sources */,
 				93D393AA69A1193401160418 /* UIView+AlphaScale.m in Sources */,

platform-darwin/Source/Mac/MPPasswordWindowController.m

@@ -547,8 +547,8 @@
 
         NSFetchRequest *fetchRequest = [NSFetchRequest fetchRequestWithEntityName:NSStringFromClass( [MPSiteEntity class] )];
         fetchRequest.sortDescriptors = @[ [[NSSortDescriptor alloc] initWithKey:@"lastUsed" ascending:NO] ];
-        fetchRequest.predicate = [NSPredicate predicateWithFormat:@"(%@ == '' OR name LIKE[cd] %@) AND user == %@",
+        fetchRequest.predicate =
-                                                                  queryPattern, queryPattern, [MPMacAppDelegate get].activeUserOID];
+                [NSPredicate predicateWithFormat:@"name LIKE[cd] %@ AND user == %@", queryPattern, [MPMacAppDelegate get].activeUserOID];
         prof_rewind( @"fetchRequest" );
 
         NSError *error = nil;

platform-darwin/Source/iOS/MPPasswordsViewController.h

@@ -34,7 +34,7 @@
 @property(assign, nonatomic) BOOL active;
 
 - (void)setActive:(BOOL)active animated:(BOOL)animated completion:(void ( ^ )(BOOL finished))completion;
-- (void)updatePasswords;
+- (void)reloadPasswords;
 
 - (IBAction)dismissPopdown:(id)sender;
 

platform-darwin/Source/iOS/MPPasswordsViewController.m

@@ -25,6 +25,8 @@
 #import "MPAnswersViewController.h"
 #import "MPMessageViewController.h"
 
+static const NSString *MPTransientPasswordItem = @"MPTransientPasswordItem";
+
 typedef NS_OPTIONS( NSUInteger, MPPasswordsTips ) {
     MPPasswordsBadNameTip = 1 << 0,
 };
@@ -32,7 +34,6 @@ typedef NS_OPTIONS( NSUInteger, MPPasswordsTips ) {
 @interface MPPasswordsViewController()<NSFetchedResultsControllerDelegate>
 
 @property(nonatomic, strong) IBOutlet UINavigationBar *navigationBar;
-@property(nonatomic, readonly) NSString *query;
 
 @end
 
@@ -42,11 +43,9 @@ typedef NS_OPTIONS( NSUInteger, MPPasswordsTips ) {
     UIColor *_backgroundColor;
     UIColor *_darkenedBackgroundColor;
     __weak UIViewController *_popdownVC;
-    BOOL _showTransientItem;
-    NSUInteger _transientItem;
     NSCharacterSet *_siteNameAcceptableCharactersSet;
     NSArray *_fuzzyGroups;
-    NSMutableArray *_passwordCollectionViewUpdatesBatch;
+    NSMutableArray<NSMutableArray *> *_passwordCollectionSections;
 }
 
 #pragma mark - Life
@@ -62,8 +61,7 @@ typedef NS_OPTIONS( NSUInteger, MPPasswordsTips ) {
 
     _backgroundColor = self.passwordCollectionView.backgroundColor;
     _darkenedBackgroundColor = [_backgroundColor colorWithAlphaComponent:0.6f];
-    _transientItem = NSNotFound;
+    _passwordCollectionSections = [NSMutableArray new];
-    _passwordCollectionViewUpdatesBatch = [NSMutableArray arrayWithCapacity:4];
 
     self.view.backgroundColor = [UIColor clearColor];
     [self.passwordCollectionView automaticallyAdjustInsetsForKeyboard];
@@ -83,7 +81,7 @@ typedef NS_OPTIONS( NSUInteger, MPPasswordsTips ) {
 
     [self registerObservers];
     [self updateConfigKey:nil];
-    [self updatePasswords];
+    [self reloadPasswords];
 }
 
 - (void)viewDidAppear:(BOOL)animated {
@@ -140,30 +138,42 @@ typedef NS_OPTIONS( NSUInteger, MPPasswordsTips ) {
     return CGSizeMake( itemWidth, 100 );
 }
 
+- (UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout
+        insetForSectionAtIndex:(NSInteger)section {
+
+    UICollectionViewFlowLayout *layout = (UICollectionViewFlowLayout *)collectionViewLayout;
+    UIEdgeInsets occludedInsets = [self.passwordCollectionView occludedInsets];
+    UIEdgeInsets insets = layout.sectionInset;
+
+    if (section == 0)
+        insets.top += occludedInsets.top;
+
+    if (section == collectionView.numberOfSections - 1)
+        insets.bottom += occludedInsets.bottom;
+
+    return insets;
+}
+
 #pragma mark - UICollectionViewDataSource
 
 - (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView {
 
-    return [self.fetchedResultsController.sections count];
+    return [_passwordCollectionSections count];
 }
 
 - (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {
 
-    if (![MPiOSAppDelegate get].activeUserOID || !_fetchedResultsController)
+    return [_passwordCollectionSections[(NSUInteger)section] count];
-        return 0;
-
-    NSUInteger objects = ((id<NSFetchedResultsSectionInfo>)self.fetchedResultsController.sections[section]).numberOfObjects;
-    _transientItem = _showTransientItem? objects: NSNotFound;
-    return objects + (_showTransientItem? 1: 0);
 }
 
 - (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
 
     MPPasswordCell *cell = [MPPasswordCell dequeueCellFromCollectionView:collectionView indexPath:indexPath];
     [cell setFuzzyGroups:_fuzzyGroups];
-    if (indexPath.item < ((id<NSFetchedResultsSectionInfo>)self.fetchedResultsController.sections[indexPath.section]).numberOfObjects)
+    id item = _passwordCollectionSections[(NSUInteger)indexPath.section][(NSUInteger)indexPath.item];
-        [cell setSite:[self.fetchedResultsController objectAtIndexPath:indexPath] animated:NO];
+    if ([item isKindOfClass:[MPSiteEntity class]])
-    else
+        [cell setSite:item animated:NO];
+    else // item == MPTransientPasswordItem
         [cell setTransientSite:self.query animated:NO];
 
     return cell;
@@ -180,61 +190,14 @@ typedef NS_OPTIONS( NSUInteger, MPPasswordsTips ) {
 
 #pragma mark - NSFetchedResultsControllerDelegate
 
-- (void)controller:(NSFetchedResultsController *)controller didChangeObject:(id)anObject atIndexPath:(NSIndexPath *)indexPath
+- (void)controllerDidChangeContent:(NSFetchedResultsController *)controller {
-     forChangeType:(NSFetchedResultsChangeType)type newIndexPath:(NSIndexPath *)newIndexPath {
-
-    Weakify( self );
-
-    if (controller == _fetchedResultsController) {
-        @synchronized (_passwordCollectionViewUpdatesBatch) {
-            [_passwordCollectionViewUpdatesBatch addObject:[^{
-                Strongify( self );
-
-                switch (type) {
-                    case NSFetchedResultsChangeInsert:
-                        [self.passwordCollectionView insertItemsAtIndexPaths:@[ newIndexPath ]];
-                        break;
-                    case NSFetchedResultsChangeDelete:
-                        [self.passwordCollectionView deleteItemsAtIndexPaths:@[ indexPath ]];
-                        break;
-                    case NSFetchedResultsChangeMove:
-                        if (![indexPath isEqual:newIndexPath])
-                            [self.passwordCollectionView moveItemAtIndexPath:indexPath toIndexPath:newIndexPath];
-                        break;
-                    case NSFetchedResultsChangeUpdate:
-                        [self.passwordCollectionView reloadItemsAtIndexPaths:@[ indexPath ]];
-                        break;
-                }
-            } copy]];
-        }
-
-        [controller.managedObjectContext performBlock:^{
-            PearlMainQueueOperation( ^{
-                @try {
-                    [self.passwordCollectionView performBatchUpdates:^{
-                        [self updateTransientItem];
-
-                        @synchronized (_passwordCollectionViewUpdatesBatch) {
-                            for (VoidBlock block in _passwordCollectionViewUpdatesBatch)
-                                block();
-                            [_passwordCollectionViewUpdatesBatch removeAllObjects];
-                        }
-                    }                                     completion:nil];
-                }
-                @catch (NSException *exception) {
-                    wrn( @"While updating password cells: %@", [exception fullDescription] );
-                    [self.passwordCollectionView reloadData];
-                }
-            } );
-        }];
-    }
-}
-
-- (void)controller:(NSFetchedResultsController *)controller didChangeSection:(id<NSFetchedResultsSectionInfo>)sectionInfo
-           atIndex:(NSUInteger)sectionIndex forChangeType:(NSFetchedResultsChangeType)type {
 
     if (controller == _fetchedResultsController)
-        [self.passwordCollectionView reloadData];
+        PearlMainQueue( ^{
+            [self.passwordCollectionView updateDataSource:_passwordCollectionSections
+                                               toSections:[self createPasswordCollectionSections]
+                                              reloadItems:nil completion:nil];
+        } );
 }
 
 #pragma mark - UISearchBarDelegate
@@ -266,7 +229,7 @@ typedef NS_OPTIONS( NSUInteger, MPPasswordsTips ) {
         if (_passwordsDismissRecognizer)
             [self.view removeGestureRecognizer:_passwordsDismissRecognizer];
 
-        [self updatePasswords];
+        [self reloadPasswords];
         [UIView animateWithDuration:0.3f animations:^{
             self.passwordCollectionView.backgroundColor = _backgroundColor;
         }];
@@ -290,7 +253,7 @@ typedef NS_OPTIONS( NSUInteger, MPPasswordsTips ) {
         if ([[self.query stringByTrimmingCharactersInSet:_siteNameAcceptableCharactersSet] length])
             [self showTips:MPPasswordsBadNameTip];
 
-        [self updatePasswords];
+        [self reloadPasswords];
     }
 }
 
@@ -311,24 +274,29 @@ typedef NS_OPTIONS( NSUInteger, MPPasswordsTips ) {
     }];
 }
 
-- (void)updateTransientItem {
+- (NSMutableArray<NSMutableArray *> *)createPasswordCollectionSections {
 
     NSString *query = self.query;
-    _showTransientItem = [query length] > 0 && ![[[self.fetchedResultsController.sections[0] objects] filteredArrayUsingPredicate:
+    BOOL needTransientItem = [query length] > 0;
-            [NSPredicate predicateWithBlock:^BOOL(MPSiteEntity *site, NSDictionary<NSString *, id> *bindings) {
+
-                return [site.name isEqualToString:query];
+    NSArray<id<NSFetchedResultsSectionInfo>> *sectionInfos = [self.fetchedResultsController sections];
-            }]] count];
+    NSMutableArray *sections = [[NSMutableArray alloc] initWithCapacity:[sectionInfos count]];
-    if (!_showTransientItem && _transientItem != NSNotFound)
+    for (id<NSFetchedResultsSectionInfo> sectionInfo in sectionInfos) {
-        [self.passwordCollectionView deleteItemsAtIndexPaths:
+        NSArray<MPSiteEntity *> *sites = [sectionInfo.objects copy];
-                @[ [NSIndexPath indexPathForItem:_transientItem inSection:0] ]];
+        [sections addObject:sites];
-    else if (_showTransientItem && _transientItem == NSNotFound) {
+
-        NSUInteger objects = [self.fetchedResultsController.sections[0] numberOfObjects];
+        if (needTransientItem)
-        [self.passwordCollectionView insertItemsAtIndexPaths:
+            for (MPSiteEntity *site in sites)
-                @[ [NSIndexPath indexPathForItem:objects inSection:0] ]];
+                if ([site.name isEqualToString:query]) {
+                    needTransientItem = NO;
+                    break;
                 }
-    else if (_transientItem != NSNotFound)
+    }
-        [self.passwordCollectionView reloadItemsAtIndexPaths:
+
-                @[ [NSIndexPath indexPathForItem:_transientItem inSection:0] ]];
+    if (needTransientItem)
+        [sections addObject:@[ MPTransientPasswordItem ]];
+
+    return sections;
 }
 
 - (void)registerObservers {
@@ -340,7 +308,7 @@ typedef NS_OPTIONS( NSUInteger, MPPasswordsTips ) {
             } );
     PearlAddNotificationObserver( UIApplicationWillEnterForegroundNotification, nil, [NSOperationQueue mainQueue],
             ^(MPPasswordsViewController *self, NSNotification *note) {
-                [self updatePasswords];
+                [self reloadPasswords];
             } );
     PearlAddNotificationObserver( UIApplicationDidBecomeActiveNotification, nil, [NSOperationQueue mainQueue],
             ^(MPPasswordsViewController *self, NSNotification *note) {
@@ -372,7 +340,7 @@ typedef NS_OPTIONS( NSUInteger, MPPasswordsTips ) {
     PearlAddNotificationObserver( NSPersistentStoreCoordinatorStoresDidChangeNotification, nil, nil,
             ^(MPPasswordsViewController *self, NSNotification *note) {
                 PearlMainQueue( ^{
-                    [self updatePasswords];
+                    [self reloadPasswords];
                     [self registerObservers];
                 } );
             } );
@@ -395,81 +363,40 @@ typedef NS_OPTIONS( NSUInteger, MPPasswordsTips ) {
         [self.passwordCollectionView reloadData];
 }
 
-- (void)updatePasswords {
+- (void)reloadPasswords {
-
-    NSManagedObjectID *activeUserOID = [MPiOSAppDelegate get].activeUserOID;
-    if (!activeUserOID) {
-        PearlMainQueue( ^{
-            self.passwordsSearchBar.text = nil;
-            [self.passwordCollectionView reloadData];
-            [self.passwordCollectionView setContentOffset:CGPointMake( 0, -self.passwordCollectionView.contentInset.top ) animated:YES];
-        } );
-        return;
-    }
 
+    [self.fetchedResultsController.managedObjectContext performBlock:^{
         static NSRegularExpression *fuzzyRE;
         static dispatch_once_t once = 0;
         dispatch_once( &once, ^{
             fuzzyRE = [NSRegularExpression regularExpressionWithPattern:@"(.)" options:0 error:nil];
         } );
 
+        prof_new( @"updateSites" );
         NSString *queryString = self.query;
-    NSString *queryPattern;
+        NSString *queryPattern = [[queryString stringByReplacingMatchesOfExpression:fuzzyRE withTemplate:@"*$1"]
-    if ([queryString length] < 13)
+                stringByAppendingString:@"*"];
-        queryPattern = [queryString stringByReplacingMatchesOfExpression:fuzzyRE withTemplate:@"*$1*"];
+        prof_rewind( @"queryPattern" );
-    else
+        NSMutableArray *fuzzyGroups = [NSMutableArray new];
-        // If query is too long, a wildcard per character makes the CoreData fetch take excessively long.
-        queryPattern = strf( @"*%@*", queryString );
-    NSMutableArray *fuzzyGroups = [NSMutableArray arrayWithCapacity:[queryString length]];
         [fuzzyRE enumerateMatchesInString:queryString options:0 range:NSMakeRange( 0, queryString.length )
                                usingBlock:^(NSTextCheckingResult *result, NSMatchingFlags flags, BOOL *stop) {
                                    [fuzzyGroups addObject:[queryString substringWithRange:result.range]];
                                }];
         _fuzzyGroups = fuzzyGroups;
-    [self.fetchedResultsController.managedObjectContext performBlock:^{
-        NSArray *oldSectionInfos = [self.fetchedResultsController sections];
-        NSMutableArray *oldSections = [[NSMutableArray alloc] initWithCapacity:[oldSectionInfos count]];
-        for (id<NSFetchedResultsSectionInfo> sectionInfo in oldSectionInfos)
-            [oldSections addObject:[sectionInfo.objects copy]];
 
         NSError *error = nil;
         self.fetchedResultsController.fetchRequest.predicate =
-                [NSPredicate predicateWithFormat:@"(%@ == '' OR name LIKE[cd] %@) AND user == %@",
+                [NSPredicate predicateWithFormat:@"name LIKE[cd] %@ AND user == %@", queryPattern, [MPiOSAppDelegate get].activeUserOID];
-                                                 queryPattern, queryPattern, activeUserOID];
         if (![self.fetchedResultsController performFetch:&error])
             err( @"Couldn't fetch sites: %@", [error fullDescription] );
 
         PearlMainQueue( ^{
-            @try {
+            [self.passwordCollectionView updateDataSource:_passwordCollectionSections
-                [self.passwordCollectionView performBatchUpdates:^{
+                                               toSections:[self createPasswordCollectionSections]
-                    [self updateTransientItem];
+                                              reloadItems:@[ MPTransientPasswordItem ] completion:^(BOOL finished) {
-
-                    NSInteger fromSections = self.passwordCollectionView.numberOfSections;
-                    NSInteger toSections = [self numberOfSectionsInCollectionView:self.passwordCollectionView];
-                    for (NSInteger section = 0; section < MAX( toSections, fromSections ); ++section) {
-                        if (section >= fromSections)
-                            [self.passwordCollectionView insertSections:[NSIndexSet indexSetWithIndex:section]];
-                        else if (section >= toSections)
-                            [self.passwordCollectionView deleteSections:[NSIndexSet indexSetWithIndex:section]];
-                        else if (section < [oldSections count])
-                            [self.passwordCollectionView reloadItemsFromArray:oldSections[section]
-                                                                      toArray:[[self.fetchedResultsController sections][section] objects]
-                                                                    inSection:section];
-                        else
-                            [self.passwordCollectionView reloadSections:[NSIndexSet indexSetWithIndex:section]];
-                    }
-                }                                     completion:^(BOOL finished) {
-                    if (finished)
-                        [self.passwordCollectionView setContentOffset:CGPointMake( 0, -self.passwordCollectionView.contentInset.top )
-                                                             animated:YES];
                         for (MPPasswordCell *cell in self.passwordCollectionView.visibleCells)
                             [cell setFuzzyGroups:_fuzzyGroups];
                     }];
-            }
-            @catch (NSException *exception) {
-                wrn( @"While updating password cells: %@", [exception fullDescription] );
-                [self.passwordCollectionView reloadData];
-            }
         } );
     }];
 }
@@ -484,15 +411,15 @@ typedef NS_OPTIONS( NSUInteger, MPPasswordsTips ) {
 - (NSFetchedResultsController *)fetchedResultsController {
 
     if (!_fetchedResultsController) {
-        _showTransientItem = NO;
         [MPiOSAppDelegate managedObjectContextForMainThreadPerformBlockAndWait:^(NSManagedObjectContext *mainContext) {
             NSFetchRequest *fetchRequest = [NSFetchRequest fetchRequestWithEntityName:NSStringFromClass( [MPSiteEntity class] )];
             fetchRequest.sortDescriptors = @[
                     [[NSSortDescriptor alloc] initWithKey:NSStringFromSelector( @selector( lastUsed ) ) ascending:NO]
             ];
             fetchRequest.fetchBatchSize = 10;
-            _fetchedResultsController = [[NSFetchedResultsController alloc]
+            _fetchedResultsController =
-                    initWithFetchRequest:fetchRequest managedObjectContext:mainContext sectionNameKeyPath:nil cacheName:nil];
+                    [[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest managedObjectContext:mainContext
+                                                          sectionNameKeyPath:nil cacheName:nil];
             _fetchedResultsController.delegate = self;
         }];
         [self registerObservers];

platform-darwin/Source/iOS/MPStoreViewController.m

@@ -73,7 +73,7 @@ PearlEnum( MPDevelopmentFuelConsumption,
 
     self.tableView.contentInset = UIEdgeInsetsMake( 64, 0, 49, 0 );
 
-    [self reloadCellsHiding:self.allCellsBySection[0] showing:@[ self.loadingCell ]];
+    [self updateCellsHiding:self.allCellsBySection[0] showing:@[ self.loadingCell ]];
     [self.allCellsBySection[0] enumerateObjectsUsingBlock:^(MPStoreProductCell *cell, NSUInteger idx, BOOL *stop) {
         if ([cell isKindOfClass:[MPStoreProductCell class]]) {
             cell.purchasedIndicator.visible = NO;
@@ -257,7 +257,7 @@ PearlEnum( MPDevelopmentFuelConsumption,
     }
 
     [hideCells removeObjectsInArray:showCells];
-    [self reloadCellsHiding:hideCells showing:showCells];
+    [self updateCellsHiding:hideCells showing:showCells];
 }
 
 - (void)updateFuel {

platform-darwin/Source/iOS/MPiOSAppDelegate.m

@@ -25,6 +25,7 @@
 
 @property(nonatomic, strong) UIDocumentInteractionController *interactionController;
 
+@property(nonatomic) UIBackgroundTaskIdentifier task;
 @end
 
 @implementation MPiOSAppDelegate
@@ -244,6 +245,44 @@
     if (![[MPiOSConfig get].rememberLogin boolValue])
         [self signOutAnimated:NO];
 
+//    self.task = [application beginBackgroundTaskWithExpirationHandler:^{
+//        [application endBackgroundTask:self.task];
+//        dbg( @"background expiring" );
+//    }];
+//    PearlNotMainQueueOperation( ^{
+//        NSString *pbstring = [UIPasteboard generalPasteboard].string;
+//        while (YES) {
+//            NSString *newString = [UIPasteboard generalPasteboard].string;
+//            if (![newString isEqualToString:pbstring]) {
+//                dbg( @"pasteboard changed to: %@", newString );
+//                pbstring = newString;
+//                NSURL *url = [NSURL URLWithString:pbstring];
+//                if (url) {
+//                    NSString *siteName = [url host];
+//                }
+//                MPKey *key = [MPiOSAppDelegate get].key;
+//                if (key)
+//                    [MPiOSAppDelegate managedObjectContextPerformBlock:^(NSManagedObjectContext *context) {
+//                        NSFetchRequest<MPSiteEntity *>
+//                                *fetchRequest = [NSFetchRequest fetchRequestWithEntityName:NSStringFromClass( [MPSiteEntity class] )];
+//                        fetchRequest.sortDescriptors = @[
+//                                [[NSSortDescriptor alloc] initWithKey:NSStringFromSelector( @selector( lastUsed ) ) ascending:NO]
+//                        ];
+//                        fetchRequest.fetchBatchSize = 2;
+//                        fetchRequest.predicate = [NSPredicate predicateWithFormat:@"(name LIKE[cd] %@) AND user == %@", siteName,
+//                                                                                  [[MPiOSAppDelegate get] activeUserOID]];
+//                        NSError *error = nil;
+//                        NSArray<MPSiteEntity *> *results = [fetchRequest execute:&error];
+//                        dbg( @"site search, error: %@, results:\n%@", error, results );
+//                        if ([results count]) {
+//                            [UIPasteboard generalPasteboard].string = [[results firstObject] resolvePasswordUsingKey:key];
+//                        }
+//                    }];
+//            }
+//            [NSThread sleepForTimeInterval:5];
+//        }
+//    } );
+
     [super applicationDidEnterBackground:application];
 }
 

platform-darwin/Source/iOS/Storyboard.storyboard

@@ -526,7 +526,7 @@
             <objects>
                 <navigationController definesPresentationContext="YES" navigationBarHidden="YES" id="Q1S-vU-GGO" customClass="MPNavigationController" sceneMemberID="viewController">
                     <simulatedStatusBarMetrics key="simulatedStatusBarMetrics" statusBarStyle="lightContent"/>
-                    <navigationBar key="navigationBar" contentMode="scaleToFill" id="4yl-zs-iUd">
+                    <navigationBar key="navigationBar" contentMode="scaleToFill" misplaced="YES" id="4yl-zs-iUd">
                         <rect key="frame" x="0.0" y="0.0" width="1000" height="1000"/>
                         <autoresizingMask key="autoresizingMask"/>
                     </navigationBar>
@@ -1155,7 +1155,7 @@
                                     <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="K2e-Gh-7hH" userLabel="Passwords Container">
                                         <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
                                         <subviews>
-                                            <collectionView opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="scaleToFill" minimumZoomScale="0.0" maximumZoomScale="0.0" keyboardDismissMode="onDrag" dataMode="prototypes" translatesAutoresizingMaskIntoConstraints="NO" id="aXw-tn-8Sj" userLabel="Password Collection">
+                                            <collectionView opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="scaleToFill" minimumZoomScale="0.0" maximumZoomScale="0.0" dataMode="prototypes" translatesAutoresizingMaskIntoConstraints="NO" id="aXw-tn-8Sj" userLabel="Password Collection">
                                                 <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
                                                 <color key="backgroundColor" red="0.0" green="0.0" blue="0.0" alpha="0.0" colorSpace="custom" customColorSpace="sRGB"/>
                                                 <inset key="scrollIndicatorInsets" minX="0.0" minY="108" maxX="0.0" maxY="0.0"/>
@@ -1163,11 +1163,11 @@
                                                     <size key="itemSize" width="355" height="100"/>
                                                     <size key="headerReferenceSize" width="0.0" height="0.0"/>
                                                     <size key="footerReferenceSize" width="0.0" height="0.0"/>
-                                                    <inset key="sectionInset" minX="10" minY="118" maxX="10" maxY="10"/>
+                                                    <inset key="sectionInset" minX="10" minY="10" maxX="10" maxY="10"/>
                                                 </collectionViewFlowLayout>
                                                 <cells>
                                                     <collectionViewCell opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" reuseIdentifier="MPPasswordCell" id="W2g-yv-V3V" customClass="MPPasswordCell">
-                                                        <rect key="frame" x="10" y="118" width="355" height="100"/>
+                                                        <rect key="frame" x="10" y="10" width="355" height="100"/>
                                                         <autoresizingMask key="autoresizingMask"/>
                                                         <view key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center">
                                                             <rect key="frame" x="0.0" y="0.0" width="355" height="100"/>
@@ -2022,7 +2022,7 @@ eg. apple.com, rmitchell@twitter.com</string>
             <objects>
                 <navigationController definesPresentationContext="YES" id="LBn-EA-NAH" sceneMemberID="viewController">
                     <tabBarItem key="tabBarItem" title="Settings" image="icon_gears.png" id="6n3-Ay-Knn"/>
-                    <navigationBar key="navigationBar" contentMode="scaleToFill" id="h6j-1o-LHf">
+                    <navigationBar key="navigationBar" contentMode="scaleToFill" misplaced="YES" id="h6j-1o-LHf">
                         <rect key="frame" x="0.0" y="0.0" width="1000" height="1000"/>
                         <autoresizingMask key="autoresizingMask"/>
                     </navigationBar>
@@ -2273,7 +2273,7 @@ Suspendisse potenti. Etiam ut nisi id augue tempor ultrices et sit amet sapien.
             <objects>
                 <navigationController definesPresentationContext="YES" id="Ec4-G7-5Td" customClass="PearlNavigationController" sceneMemberID="viewController">
                     <extendedEdge key="edgesForExtendedLayout"/>
-                    <navigationBar key="navigationBar" contentMode="scaleToFill" barStyle="black" id="MA4-cY-VCZ">
+                    <navigationBar key="navigationBar" contentMode="scaleToFill" misplaced="YES" barStyle="black" id="MA4-cY-VCZ">
                         <rect key="frame" x="0.0" y="0.0" width="1000" height="1000"/>
                         <autoresizingMask key="autoresizingMask"/>
                         <color key="tintColor" red="0.47450980390000003" green="0.86666666670000003" blue="0.98431372549999996" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>