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4ba6f451f6
* Remove preferredFrameSize * Remove -measure: * Remove -measureWithSizeRange: * Remove ASLayoutable * Remove .name * Remove deprecated style forwardings That includes following properties that are declared on ASDisplayNode and ASLayoutSpec: spacingBefore, spacingAfter, flexGrow, flexShrink, flexBasis, alignSelf, ascender, descender, sizeRange and layoutPosition. * Remove usesImplicitHierarchyManagement * Remove deprecated range update callbacks: -visibilityDidChange: -visibleStateDidChange: -displayStateDidChange: -loadStateDidChange: * Remove -clearFetchedData * Remove -cancelLayoutTransitionsInProgress * Remve ASDisplayNode+Deprecated.h * Remove ASLayoutRangeTypeRender and ASLayoutRangeTypeFetchData * Remove -[ASTableView clearContents] * Remove reloadDataImmediately * Remove ASStaticLayoutSpec * Remove ASDimensionDeprecated * Remove optional -pagerNode:constrainedSizeForNodeAtIndex: delegate method in ASPagerDelegate * Remove suppressesInvalidCollectionUpdateExceptions * Remove -[ASCollectionViewLayoutInspector initWithCollectionView] * Remove ASVideoPlayerNode.loadAssetWhenNodeBecomesVisible * Update CHANGELOG * Update license of ASLayoutSpecTests.m * Update examples/PagerNode * Remove ASEnvironmentTraitCollection * Remove -ASViewController.nodeConstrainedSize * More on removing ASLayoutable
85 lines
3.6 KiB
Objective-C
85 lines
3.6 KiB
Objective-C
//
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// ASCollectionViewLayoutInspector.m
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// Texture
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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 /ASDK-Licenses directory of this source tree. An additional
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// grant of patent rights can be found in the PATENTS file in the same directory.
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//
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// Modifications to this file made after 4/13/2017 are: Copyright (c) 2017-present,
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// Pinterest, Inc. 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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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#import <AsyncDisplayKit/ASCollectionViewLayoutInspector.h>
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#import <AsyncDisplayKit/ASCollectionView.h>
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#import <AsyncDisplayKit/ASCollectionView+Undeprecated.h>
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#import <AsyncDisplayKit/ASCollectionNode.h>
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#pragma mark - Helper Functions
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// Returns a constrained size to let the cells layout itself as far as possible based on the scrollable direction
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// of the collection view
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ASSizeRange NodeConstrainedSizeForScrollDirection(ASCollectionView *collectionView) {
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CGSize maxSize = collectionView.bounds.size;
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UIEdgeInsets contentInset = collectionView.contentInset;
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if (ASScrollDirectionContainsHorizontalDirection(collectionView.scrollableDirections)) {
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maxSize.width = CGFLOAT_MAX;
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maxSize.height -= (contentInset.top + contentInset.bottom);
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} else {
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maxSize.width -= (contentInset.left + contentInset.right);
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maxSize.height = CGFLOAT_MAX;
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}
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return ASSizeRangeMake(CGSizeZero, maxSize);
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}
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#pragma mark - ASCollectionViewLayoutInspector
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@implementation ASCollectionViewLayoutInspector {
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struct {
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unsigned int implementsConstrainedSizeForNodeAtIndexPathDeprecated:1;
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unsigned int implementsConstrainedSizeForNodeAtIndexPath:1;
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} _delegateFlags;
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}
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#pragma mark ASCollectionViewLayoutInspecting
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- (void)didChangeCollectionViewDelegate:(id<ASCollectionDelegate>)delegate
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{
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if (delegate == nil) {
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memset(&_delegateFlags, 0, sizeof(_delegateFlags));
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} else {
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_delegateFlags.implementsConstrainedSizeForNodeAtIndexPathDeprecated = [delegate respondsToSelector:@selector(collectionView:constrainedSizeForNodeAtIndexPath:)];
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_delegateFlags.implementsConstrainedSizeForNodeAtIndexPath = [delegate respondsToSelector:@selector(collectionNode:constrainedSizeForItemAtIndexPath:)];
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}
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}
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- (ASSizeRange)collectionView:(ASCollectionView *)collectionView constrainedSizeForNodeAtIndexPath:(NSIndexPath *)indexPath
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{
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if (_delegateFlags.implementsConstrainedSizeForNodeAtIndexPath) {
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return [collectionView.asyncDelegate collectionNode:collectionView.collectionNode constrainedSizeForItemAtIndexPath:indexPath];
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} else if (_delegateFlags.implementsConstrainedSizeForNodeAtIndexPathDeprecated) {
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wdeprecated-declarations"
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return [collectionView.asyncDelegate collectionView:collectionView constrainedSizeForNodeAtIndexPath:indexPath];
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#pragma clang diagnostic pop
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} else {
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// With 2.0 `collectionView:constrainedSizeForNodeAtIndexPath:` was moved to the delegate. Assert if not implemented on the delegate but on the data source
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ASDisplayNodeAssert([collectionView.asyncDataSource respondsToSelector:@selector(collectionView:constrainedSizeForNodeAtIndexPath:)] == NO, @"collectionView:constrainedSizeForNodeAtIndexPath: was moved from the ASCollectionDataSource to the ASCollectionDelegate.");
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}
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return NodeConstrainedSizeForScrollDirection(collectionView);
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}
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- (ASScrollDirection)scrollableDirections
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{
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return ASScrollDirectionNone;
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}
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@end
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