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d59ea3902d
* Initial work supporting supplementaries in range controller * Rename indexPathForElementIfItem
56 lines
2.0 KiB
Objective-C
56 lines
2.0 KiB
Objective-C
//
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// ASTableLayoutController.m
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// AsyncDisplayKit
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//
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// Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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//
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#import <AsyncDisplayKit/ASTableLayoutController.h>
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#import <UIKit/UIKit.h>
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#import <AsyncDisplayKit/ASAssert.h>
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#import <AsyncDisplayKit/ASElementMap.h>
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@interface ASTableLayoutController()
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@end
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@implementation ASTableLayoutController
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- (instancetype)initWithTableView:(UITableView *)tableView
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{
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if (!(self = [super init])) {
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return nil;
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}
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_tableView = tableView;
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return self;
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}
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#pragma mark - ASLayoutController
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- (NSSet<ASCollectionElement *> *)elementsForScrolling:(ASScrollDirection)scrollDirection rangeMode:(ASLayoutRangeMode)rangeMode rangeType:(ASLayoutRangeType)rangeType map:(ASElementMap *)map
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{
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CGRect bounds = _tableView.bounds;
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ASRangeTuningParameters tuningParameters = [self tuningParametersForRangeMode:rangeMode rangeType:rangeType];
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CGRect rangeBounds = CGRectExpandToRangeWithScrollableDirections(bounds, tuningParameters, ASScrollDirectionVerticalDirections, scrollDirection);
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NSArray *array = [_tableView indexPathsForRowsInRect:rangeBounds];
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return ASSetByFlatMapping(array, NSIndexPath *indexPath, [map elementForItemAtIndexPath:indexPath]);
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}
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- (void)allElementsForScrolling:(ASScrollDirection)scrollDirection rangeMode:(ASLayoutRangeMode)rangeMode displaySet:(NSSet<ASCollectionElement *> *__autoreleasing _Nullable *)displaySet preloadSet:(NSSet<ASCollectionElement *> *__autoreleasing _Nullable *)preloadSet map:(ASElementMap *)map
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{
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if (displaySet == NULL || preloadSet == NULL) {
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return;
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}
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*displaySet = [self elementsForScrolling:scrollDirection rangeMode:rangeMode rangeType:ASLayoutRangeTypeDisplay map:map];
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*preloadSet = [self elementsForScrolling:scrollDirection rangeMode:rangeMode rangeType:ASLayoutRangeTypePreload map:map];
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return;
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}
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@end
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