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optimize reload data, reload sections, & move nodes performance & logic

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This commit is contained in:
Luke Zhao
2016-02-17 14:52:33 -08:00
parent 205feef58c
commit 40791dd859
11 changed files with 479 additions and 347 deletions
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81
AsyncDisplayKit/Details/ASCollectionDataController.mm
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@@ -49,37 +49,27 @@
[self _populateSupplementaryNodesOfKind:kind withMutableNodes:nodes mutableIndexPaths:indexPaths];
_pendingNodes[kind] = nodes;
_pendingIndexPaths[kind] = indexPaths;
// Measure loaded nodes before leaving the main thread
[self batchLayoutNodes:nodes ofKind:kind atIndexPaths:indexPaths completion:nil];
}
}
- (void)willReloadData
{
[_pendingNodes enumerateKeysAndObjectsUsingBlock:^(NSString *kind, NSMutableArray *nodes, BOOL *stop) {
// Remove everything that existed before the reload, now that we're ready to insert replacements
NSArray *indexPaths = [self indexPathsForEditingNodesOfKind:kind];
[self deleteNodesOfKind:kind atIndexPaths:indexPaths completion:nil];
NSArray *editingNodes = [self editingNodesOfKind:kind];
NSMutableIndexSet *indexSet = [[NSMutableIndexSet alloc] initWithIndexesInRange:NSMakeRange(0, editingNodes.count)];
[self deleteSectionsOfKind:kind atIndexSet:indexSet completion:nil];
// Insert each section
// Insert sections
NSUInteger sectionCount = [self.collectionDataSource dataController:self numberOfSectionsForSupplementaryNodeOfKind:kind];
NSMutableArray *sections = [NSMutableArray arrayWithCapacity:sectionCount];
for (int i = 0; i < sectionCount; i++) {
[sections addObject:[NSMutableArray array]];
}
[self insertSections:sections ofKind:kind atIndexSet:[NSIndexSet indexSetWithIndexesInRange:NSMakeRange(0, sectionCount)] completion:nil];
[self batchLayoutNodes:nodes ofKind:kind atIndexPaths:_pendingIndexPaths[kind] completion:^(NSArray *nodes, NSArray *indexPaths) {
[self insertNodes:nodes ofKind:kind atIndexPaths:indexPaths completion:nil];
self.editingNode[kind] = sections;
[self layoutAndInsertFromNodeBlocks:nodes ofKind:kind atIndexPaths:_pendingIndexPaths[kind] completion:^(NSArray<ASCellNode *> *nodes, NSArray<NSIndexPath *> *indexPaths) {
[self commitChangesToNodesOfKind:kind withCompletion:nil];
}];
[_pendingNodes removeObjectForKey:kind];
[_pendingIndexPaths removeObjectForKey:kind];
}];
[_pendingNodes removeAllObjects];
[_pendingIndexPaths removeAllObjects];
}
- (void)prepareForInsertSections:(NSIndexSet *)sections
@@ -91,9 +81,6 @@
[self _populateSupplementaryNodesOfKind:kind withSections:sections mutableNodes:nodes mutableIndexPaths:indexPaths];
_pendingNodes[kind] = nodes;
_pendingIndexPaths[kind] = indexPaths;
// Measure loaded nodes before leaving the main thread
[self batchLayoutNodes:nodes ofKind:kind atIndexPaths:indexPaths completion:nil];
}
}
@@ -104,23 +91,22 @@
for (NSUInteger i = 0; i < sections.count; i++) {
[sectionArray addObject:[NSMutableArray array]];
}
[self insertSections:sectionArray ofKind:kind atIndexSet:sections completion:nil];
[self batchLayoutNodes:nodes ofKind:kind atIndexPaths:_pendingIndexPaths[kind] completion:^(NSArray *nodes, NSArray *indexPaths) {
[self insertNodes:nodes ofKind:kind atIndexPaths:indexPaths completion:nil];
[self insertSections:sectionArray ofKind:kind atIndexSet:sections];
[self layoutAndInsertFromNodeBlocks:nodes ofKind:kind atIndexPaths:_pendingIndexPaths[kind] completion:^(NSArray<ASCellNode *> *nodes, NSArray<NSIndexPath *> *indexPaths) {
[self commitChangesToNodesOfKind:kind withCompletion:nil];
}];
[_pendingNodes removeObjectForKey:kind];
[_pendingIndexPaths removeObjectForKey:kind];
}];
[_pendingNodes removeAllObjects];
[_pendingIndexPaths removeAllObjects];
}
- (void)willDeleteSections:(NSIndexSet *)sections
{
for (NSString *kind in [self supplementaryKinds]) {
NSArray *indexPaths = ASIndexPathsForMultidimensionalArrayAtIndexSet([self editingNodesOfKind:kind], sections);
[self deleteNodesOfKind:kind atIndexPaths:indexPaths completion:nil];
[self deleteSectionsOfKind:kind atIndexSet:sections completion:nil];
[self deleteSectionsOfKind:kind atIndexSet:sections];
[self commitChangesToNodesOfKind:kind withCompletion:nil];
}
}
@@ -132,40 +118,31 @@
[self _populateSupplementaryNodesOfKind:kind withSections:sections mutableNodes:nodes mutableIndexPaths:indexPaths];
_pendingNodes[kind] = nodes;
_pendingIndexPaths[kind] = indexPaths;
// Measure loaded nodes before leaving the main thread
[self batchLayoutNodes:nodes ofKind:kind atIndexPaths:indexPaths completion:nil];
}
}
- (void)willReloadSections:(NSIndexSet *)sections
{
[_pendingNodes enumerateKeysAndObjectsUsingBlock:^(NSString *kind, NSMutableArray *nodes, BOOL *stop) {
NSArray *indexPaths = ASIndexPathsForMultidimensionalArrayAtIndexSet([self editingNodesOfKind:kind], sections);
[self deleteNodesOfKind:kind atIndexPaths:indexPaths completion:nil];
// reinsert the elements
[self batchLayoutNodes:nodes ofKind:kind atIndexPaths:_pendingIndexPaths[kind] completion:^(NSArray *nodes, NSArray *indexPaths) {
[self insertNodes:nodes ofKind:kind atIndexPaths:indexPaths completion:nil];
// clear sections
[sections enumerateIndexesUsingBlock:^(NSUInteger idx, BOOL * _Nonnull stop) {
self.editingNode[kind][idx] = [[NSMutableArray alloc] init];
}];
// reinsert the elements
[self layoutAndInsertFromNodeBlocks:nodes ofKind:kind atIndexPaths:_pendingIndexPaths[kind] completion:^(NSArray<ASCellNode *> *nodes, NSArray<NSIndexPath *> *indexPaths) {
[self commitChangesToNodesOfKind:kind withCompletion:nil];
}];
[_pendingNodes removeObjectForKey:kind];
[_pendingIndexPaths removeObjectForKey:kind];
}];
[_pendingNodes removeAllObjects];
[_pendingIndexPaths removeAllObjects];
}
- (void)willMoveSection:(NSInteger)section toSection:(NSInteger)newSection
{
for (NSString *kind in [self supplementaryKinds]) {
NSArray *indexPaths = ASIndexPathsForMultidimensionalArrayAtIndexSet([self editingNodesOfKind:kind], [NSIndexSet indexSetWithIndex:section]);
NSArray *nodes = ASFindElementsInMultidimensionalArrayAtIndexPaths([self editingNodesOfKind:kind], indexPaths);
[self deleteNodesOfKind:kind atIndexPaths:indexPaths completion:nil];
// update the section of indexpaths
NSIndexPath *sectionIndexPath = [[NSIndexPath alloc] initWithIndex:newSection];
NSMutableArray *updatedIndexPaths = [[NSMutableArray alloc] initWithCapacity:indexPaths.count];
[indexPaths enumerateObjectsUsingBlock:^(NSIndexPath *indexPath, NSUInteger idx, BOOL *stop) {
[updatedIndexPaths addObject:[sectionIndexPath indexPathByAddingIndex:[indexPath indexAtPosition:indexPath.length - 1]]];
}];
[self insertNodes:nodes ofKind:kind atIndexPaths:indexPaths completion:nil];
[self moveSection:section ofKind:kind toSection:newSection];
[self commitChangesToNodesOfKind:kind withCompletion:nil];
}
}