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Merge pull request #101 from nguyenhuy/collection_view
Add ASCollectionView
This commit is contained in:
appleguy
commit
3f7dc75bb1
@ -132,6 +132,9 @@
|
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05F20AA41A15733C00DCA68A /* ASImageProtocols.h in Headers */ = {isa = PBXBuildFile; fileRef = 05F20AA31A15733C00DCA68A /* ASImageProtocols.h */; settings = {ATTRIBUTES = (Public, ); }; };
|
||||
3C9C128519E616EF00E942A0 /* ASTableViewTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 3C9C128419E616EF00E942A0 /* ASTableViewTests.m */; settings = {COMPILER_FLAGS = "-fno-objc-arc"; }; };
|
||||
6BDC61F61979037800E50D21 /* AsyncDisplayKit.h in Headers */ = {isa = PBXBuildFile; fileRef = 6BDC61F51978FEA400E50D21 /* AsyncDisplayKit.h */; settings = {ATTRIBUTES = (Public, ); }; };
|
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AC3C4A511A1139C100143C57 /* ASCollectionView.h in Headers */ = {isa = PBXBuildFile; fileRef = AC3C4A4F1A1139C100143C57 /* ASCollectionView.h */; };
|
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AC3C4A521A1139C100143C57 /* ASCollectionView.m in Sources */ = {isa = PBXBuildFile; fileRef = AC3C4A501A1139C100143C57 /* ASCollectionView.m */; };
|
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AC3C4A541A113EEC00143C57 /* ASCollectionViewProtocols.h in Headers */ = {isa = PBXBuildFile; fileRef = AC3C4A531A113EEC00143C57 /* ASCollectionViewProtocols.h */; };
|
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DB7121BCD50849C498C886FB /* libPods-AsyncDisplayKitTests.a in Frameworks */ = {isa = PBXBuildFile; fileRef = EFA731F0396842FF8AB635EE /* libPods-AsyncDisplayKitTests.a */; };
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/* End PBXBuildFile section */
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@ -259,6 +262,9 @@
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05F20AA31A15733C00DCA68A /* ASImageProtocols.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ASImageProtocols.h; sourceTree = "<group>"; };
|
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3C9C128419E616EF00E942A0 /* ASTableViewTests.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = ASTableViewTests.m; sourceTree = "<group>"; };
|
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6BDC61F51978FEA400E50D21 /* AsyncDisplayKit.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = AsyncDisplayKit.h; sourceTree = "<group>"; };
|
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AC3C4A4F1A1139C100143C57 /* ASCollectionView.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ASCollectionView.h; sourceTree = "<group>"; };
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AC3C4A501A1139C100143C57 /* ASCollectionView.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = ASCollectionView.m; sourceTree = "<group>"; };
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AC3C4A531A113EEC00143C57 /* ASCollectionViewProtocols.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ASCollectionViewProtocols.h; sourceTree = "<group>"; };
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D3779BCFF841AD3EB56537ED /* Pods-AsyncDisplayKitTests.release.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-AsyncDisplayKitTests.release.xcconfig"; path = "Pods/Target Support Files/Pods-AsyncDisplayKitTests/Pods-AsyncDisplayKitTests.release.xcconfig"; sourceTree = "<group>"; };
|
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EFA731F0396842FF8AB635EE /* libPods-AsyncDisplayKitTests.a */ = {isa = PBXFileReference; explicitFileType = archive.ar; includeInIndex = 0; path = "libPods-AsyncDisplayKitTests.a"; sourceTree = BUILT_PRODUCTS_DIR; };
|
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FB07EABBCF28656C6297BC2D /* Pods-AsyncDisplayKitTests.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-AsyncDisplayKitTests.debug.xcconfig"; path = "Pods/Target Support Files/Pods-AsyncDisplayKitTests/Pods-AsyncDisplayKitTests.debug.xcconfig"; sourceTree = "<group>"; };
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@ -346,6 +352,9 @@
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055F1A3219ABD3E3004DAFF1 /* ASTableView.h */,
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0574D5E119C110610097DC25 /* ASTableViewProtocols.h */,
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055F1A3319ABD3E3004DAFF1 /* ASTableView.m */,
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AC3C4A4F1A1139C100143C57 /* ASCollectionView.h */,
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AC3C4A531A113EEC00143C57 /* ASCollectionViewProtocols.h */,
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AC3C4A501A1139C100143C57 /* ASCollectionView.m */,
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055F1A3A19ABD43F004DAFF1 /* ASCellNode.h */,
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055F1A3B19ABD43F004DAFF1 /* ASCellNode.m */,
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058D09E1195D050800B7D73C /* Details */,
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@ -503,6 +512,7 @@
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058D0A48195D05CB00B7D73C /* ASControlNode.m in Headers */,
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058D0A49195D05CB00B7D73C /* ASControlNode+Subclasses.h in Headers */,
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058D0A4A195D05CB00B7D73C /* ASDisplayNode.h in Headers */,
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AC3C4A511A1139C100143C57 /* ASCollectionView.h in Headers */,
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058D0A4B195D05CB00B7D73C /* ASDisplayNode.mm in Headers */,
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058D0A4C195D05CB00B7D73C /* ASDisplayNode+Subclasses.h in Headers */,
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058D0A4D195D05CB00B7D73C /* ASDisplayNodeExtras.h in Headers */,
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@ -568,6 +578,7 @@
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058D0A7F195D05F900B7D73C /* ASSentinel.h in Headers */,
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058D0A80195D05F900B7D73C /* ASSentinel.m in Headers */,
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058D0A81195D05F900B7D73C /* ASThread.h in Headers */,
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AC3C4A541A113EEC00143C57 /* ASCollectionViewProtocols.h in Headers */,
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);
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runOnlyForDeploymentPostprocessing = 0;
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};
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@ -699,6 +710,7 @@
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055F1A3519ABD3E3004DAFF1 /* ASTableView.m in Sources */,
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058D0A1D195D050800B7D73C /* ASTextNodeRenderer.mm in Sources */,
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058D0A2A195D050800B7D73C /* ASDisplayNode+UIViewBridge.mm in Sources */,
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AC3C4A521A1139C100143C57 /* ASCollectionView.m in Sources */,
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058D0A20195D050800B7D73C /* ASTextNodeWordKerner.m in Sources */,
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058D0A1A195D050800B7D73C /* ASHighlightOverlayLayer.mm in Sources */,
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058D0A28195D050800B7D73C /* ASDisplayNode+AsyncDisplay.mm in Sources */,
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111
AsyncDisplayKit/ASCollectionView.h
Normal file
111
AsyncDisplayKit/ASCollectionView.h
Normal file
@ -0,0 +1,111 @@
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/* Copyright (c) 2014-present, Facebook, Inc.
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* All rights reserved.
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*
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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 <UIKit/UIKit.h>
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#import <AsyncDisplayKit/ASRangeController.h>
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#import <AsyncDisplayKit/ASCollectionViewProtocols.h>
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@class ASCellNode;
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@protocol ASCollectionViewDataSource;
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@protocol ASCollectionViewDelegate;
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/**
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* Node-based collection view.
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*
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* ASCollectionView is a version of UICollectionView that uses nodes -- specifically, ASCellNode subclasses -- with asynchronous
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* pre-rendering instead of synchronously loading UICollectionViewCells.
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*/
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@interface ASCollectionView : UICollectionView
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@property (nonatomic, weak) id<ASCollectionViewDataSource> asyncDataSource;
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@property (nonatomic, weak) id<ASCollectionViewDelegate> asyncDelegate;
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/**
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* Tuning parameters for the working range.
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*
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* Defaults to a trailing buffer of one screenful and a leading buffer of two screenfuls.
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*/
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@property (nonatomic, assign) ASRangeTuningParameters rangeTuningParameters;
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/**
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* Reload everything from scratch, destroying the working range and all cached nodes.
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*
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* @warning This method is substantially more expensive than UICollectionView's version.
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*/
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- (void)reloadData;
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/**
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* WARNING: ASCollectionView's update/editing support is not yet implemented. Use of these methods will fire an assertion.
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*
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* This initial version of ASCollectionView only supports appending nodes (see below). If you'd like to see full-fledged
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* support for data source updates and interactive editing, please file a GitHub issue -- AsyncDisplayKit can do it,
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* we just haven't built it out yet. :]
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*/
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//- (void)insertSections:(NSIndexSet *)sections;
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//- (void)deleteSections:(NSIndexSet *)sections;
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//- (void)reloadSections:(NSIndexSet *)sections;
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//- (void)moveSection:(NSInteger)section toSection:(NSInteger)newSection;
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//
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//- (void)insertItemsAtIndexPaths:(NSArray *)indexPaths;
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//- (void)deleteItemsAtIndexPaths:(NSArray *)indexPaths;
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//- (void)reloadItemsAtIndexPaths:(NSArray *)indexPaths;
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//- (void)moveItemAtIndexPath:(NSIndexPath *)indexPath toIndexPath:(NSIndexPath *)newIndexPath;
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/**
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* Append nodes.
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*
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* As with UICollectionView, the asyncDataSource must be updated to reflect the new nodes before this method is called.
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*
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* @param indexPaths Ordered array of index paths corresponding to the nodes to be added.
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*/
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- (void)appendNodesWithIndexPaths:(NSArray *)indexPaths;
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/**
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* Query the sized node at `indexPath` for its calculatedSize.
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*
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* @param indexPath The index path for the node of interest.
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*/
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- (CGSize)calculatedSizeForNodeAtIndexPath:(NSIndexPath *)indexPath;
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@end
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/**
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* This is a node-based UICollectionViewDataSource.
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*/
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@protocol ASCollectionViewDataSource <ASCommonCollectionViewDataSource, NSObject>
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/**
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* Similar to -collectionView:cellForItemAtIndexPath:.
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*
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* @param collection The sender.
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*
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* @param indexPath The index path of the requested node.
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*
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* @returns a node for display at this indexpath. Must be thread-safe (can be called on the main thread or a background
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* queue) and should not implement reuse (it will be called once per row). Unlike UICollectionView's version, this method
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* is not called when the row is about to display.
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*/
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- (ASCellNode *)collectionView:(ASCollectionView *)collectionView nodeForItemAtIndexPath:(NSIndexPath *)indexPath;
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@end
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/**
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* This is a node-based UICollectionViewDelegate.
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*/
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@protocol ASCollectionViewDelegate <ASCommonCollectionViewDelegate, NSObject>
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@optional
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- (void)collectionView:(UICollectionView *)collectionView willDisplayNodeForItemAtIndexPath:(NSIndexPath *)indexPath;
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- (void)collectionView:(UICollectionView *)collectionView didEndDisplayingNodeForItemAtIndexPath:(NSIndexPath*)indexPath;
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@end
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342
AsyncDisplayKit/ASCollectionView.m
Normal file
342
AsyncDisplayKit/ASCollectionView.m
Normal file
@ -0,0 +1,342 @@
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/* Copyright (c) 2014-present, Facebook, Inc.
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* All rights reserved.
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*
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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 "ASCollectionView.h"
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#import "ASAssert.h"
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#import "ASRangeController.h"
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#pragma mark -
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#pragma mark Proxying.
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/**
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* ASCollectionView intercepts and/or overrides a few of UICollectionView's critical data source and delegate methods.
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*
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* Any selector included in this function *MUST* be implemented by ASCollectionView.
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*/
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static BOOL _isInterceptedSelector(SEL sel)
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{
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return (
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// handled by ASCollectionView node<->cell machinery
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sel == @selector(collectionView:cellForItemAtIndexPath:) ||
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sel == @selector(collectionView:layout:sizeForItemAtIndexPath:) ||
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// handled by ASRangeController
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sel == @selector(numberOfSectionsInCollectionView:) ||
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sel == @selector(collectionView:numberOfItemsInSection:) ||
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// used for ASRangeController visibility updates
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sel == @selector(collectionView:willDisplayCell:forItemAtIndexPath:) ||
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sel == @selector(collectionView:didEndDisplayingCell:forItemAtIndexPath:)
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);
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}
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/**
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* Stand-in for UICollectionViewDataSource and UICollectionViewDelegate. Any method calls we intercept are routed to ASCollectionView;
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* everything else leaves AsyncDisplayKit safely and arrives at the original intended data source and delegate.
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*/
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@interface _ASCollectionViewProxy : NSProxy
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- (instancetype)initWithTarget:(id<NSObject>)target interceptor:(ASCollectionView *)interceptor;
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@end
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@implementation _ASCollectionViewProxy {
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id<NSObject> __weak _target;
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ASCollectionView * __weak _interceptor;
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}
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- (instancetype)initWithTarget:(id<NSObject>)target interceptor:(ASCollectionView *)interceptor
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{
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// -[NSProxy init] is undefined
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if (!self) {
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return nil;
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}
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ASDisplayNodeAssert(target, @"target must not be nil");
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ASDisplayNodeAssert(interceptor, @"interceptor must not be nil");
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_target = target;
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_interceptor = interceptor;
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return self;
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}
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- (BOOL)respondsToSelector:(SEL)aSelector
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{
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return (_isInterceptedSelector(aSelector) || [_target respondsToSelector:aSelector]);
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}
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- (id)forwardingTargetForSelector:(SEL)aSelector
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{
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if (_isInterceptedSelector(aSelector)) {
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return _interceptor;
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}
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return [_target respondsToSelector:aSelector] ? _target : nil;
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}
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@end
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#pragma mark -
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#pragma mark ASCollectionView.
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@interface ASCollectionView () <ASRangeControllerDelegate> {
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_ASCollectionViewProxy *_proxyDataSource;
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_ASCollectionViewProxy *_proxyDelegate;
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ASRangeController *_rangeController;
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}
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@end
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@implementation ASCollectionView
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#pragma mark -
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#pragma mark Lifecycle.
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- (instancetype)initWithFrame:(CGRect)frame collectionViewLayout:(UICollectionViewLayout *)layout
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{
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if (!(self = [super initWithFrame:frame collectionViewLayout:layout]))
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return nil;
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_rangeController = [[ASRangeController alloc] init];
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_rangeController.delegate = self;
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[self registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:@"_ASCollectionViewCell"];
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return self;
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}
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#pragma mark -
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#pragma mark Overrides.
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- (void)reloadData
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{
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[_rangeController rebuildData];
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[super reloadData];
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}
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- (void)setDataSource:(id<UICollectionViewDataSource>)dataSource
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{
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ASDisplayNodeAssert(NO, @"ASCollectionView uses asyncDataSource, not UICollectionView's dataSource property.");
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}
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- (void)setDelegate:(id<UICollectionViewDelegate>)delegate
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{
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// Our UIScrollView superclass sets its delegate to nil on dealloc. Only assert if we get a non-nil value here.
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ASDisplayNodeAssert(delegate == nil, @"ASCollectionView uses asyncDelegate, not UICollectionView's delegate property.");
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}
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- (void)setAsyncDataSource:(id<ASCollectionViewDataSource>)asyncDataSource
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{
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if (_asyncDataSource == asyncDataSource)
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return;
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_asyncDataSource = asyncDataSource;
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_proxyDataSource = [[_ASCollectionViewProxy alloc] initWithTarget:_asyncDataSource interceptor:self];
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super.dataSource = (id<UICollectionViewDataSource>)_proxyDataSource;
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}
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- (void)setAsyncDelegate:(id<ASCollectionViewDelegate>)asyncDelegate
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{
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if (_asyncDelegate == asyncDelegate)
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return;
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_asyncDelegate = asyncDelegate;
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_proxyDelegate = [[_ASCollectionViewProxy alloc] initWithTarget:_asyncDelegate interceptor:self];
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super.delegate = (id<UICollectionViewDelegate>)_proxyDelegate;
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}
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- (ASRangeTuningParameters)rangeTuningParameters
|
||||
{
|
||||
return _rangeController.tuningParameters;
|
||||
}
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||||
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- (void)setRangeTuningParameters:(ASRangeTuningParameters)tuningParameters
|
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{
|
||||
_rangeController.tuningParameters = tuningParameters;
|
||||
}
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||||
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- (void)appendNodesWithIndexPaths:(NSArray *)indexPaths
|
||||
{
|
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[_rangeController appendNodesWithIndexPaths:indexPaths];
|
||||
}
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||||
|
||||
- (CGSize)calculatedSizeForNodeAtIndexPath:(NSIndexPath *)indexPath
|
||||
{
|
||||
return [_rangeController calculatedSizeForNodeAtIndexPath:indexPath];
|
||||
}
|
||||
|
||||
#pragma mark Assertions.
|
||||
|
||||
- (void)throwUnimplementedException
|
||||
{
|
||||
[[NSException exceptionWithName:@"UnimplementedException"
|
||||
reason:@"ASCollectionView's update/editing support is not yet implemented. Please see ASCollectionView.h."
|
||||
userInfo:nil] raise];
|
||||
}
|
||||
|
||||
- (void)insertSections:(NSIndexSet *)sections
|
||||
{
|
||||
[self throwUnimplementedException];
|
||||
}
|
||||
|
||||
- (void)deleteSections:(NSIndexSet *)sections
|
||||
{
|
||||
[self throwUnimplementedException];
|
||||
}
|
||||
|
||||
- (void)reloadSections:(NSIndexSet *)sections
|
||||
{
|
||||
[self throwUnimplementedException];
|
||||
}
|
||||
|
||||
- (void)moveSection:(NSInteger)section toSection:(NSInteger)newSection
|
||||
{
|
||||
[self throwUnimplementedException];
|
||||
}
|
||||
|
||||
- (void)insertItemsAtIndexPaths:(NSArray *)indexPaths
|
||||
{
|
||||
[self throwUnimplementedException];
|
||||
}
|
||||
|
||||
- (void)deleteItemsAtIndexPaths:(NSArray *)indexPaths
|
||||
{
|
||||
[self throwUnimplementedException];
|
||||
}
|
||||
|
||||
- (void)reloadItemsAtIndexPaths:(NSArray *)indexPaths
|
||||
{
|
||||
[self throwUnimplementedException];
|
||||
}
|
||||
|
||||
- (void)moveItemAtIndexPath:(NSIndexPath *)indexPath toIndexPath:(NSIndexPath *)newIndexPath
|
||||
{
|
||||
[self throwUnimplementedException];
|
||||
}
|
||||
|
||||
|
||||
#pragma mark -
|
||||
#pragma mark Intercepted selectors.
|
||||
|
||||
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
|
||||
{
|
||||
static NSString *reuseIdentifier = @"_ASCollectionViewCell";
|
||||
|
||||
UICollectionViewCell *cell = [self dequeueReusableCellWithReuseIdentifier:reuseIdentifier forIndexPath:indexPath];
|
||||
|
||||
[_rangeController configureContentView:cell.contentView forIndexPath:indexPath];
|
||||
|
||||
return cell;
|
||||
}
|
||||
|
||||
- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath
|
||||
{
|
||||
return [_rangeController calculatedSizeForNodeAtIndexPath:indexPath];
|
||||
}
|
||||
|
||||
- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView
|
||||
{
|
||||
return [_rangeController numberOfSizedSections];
|
||||
}
|
||||
|
||||
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
|
||||
{
|
||||
return [_rangeController numberOfSizedRowsInSection:section];
|
||||
}
|
||||
|
||||
- (void)collectionView:(UICollectionView *)collectionView willDisplayCell:(UICollectionViewCell *)cell forItemAtIndexPath:(NSIndexPath *)indexPath
|
||||
{
|
||||
[_rangeController visibleNodeIndexPathsDidChange];
|
||||
|
||||
if ([_asyncDelegate respondsToSelector:@selector(collectionView:willDisplayNodeForItemAtIndexPath:)]) {
|
||||
[_asyncDelegate collectionView:self willDisplayNodeForItemAtIndexPath:indexPath];
|
||||
}
|
||||
}
|
||||
|
||||
- (void)collectionView:(UICollectionView *)collectionView didEndDisplayingCell:(UICollectionViewCell *)cell forItemAtIndexPath:(NSIndexPath *)indexPath
|
||||
{
|
||||
[_rangeController visibleNodeIndexPathsDidChange];
|
||||
|
||||
if ([_asyncDelegate respondsToSelector:@selector(collectionView:didEndDisplayingNodeForItemAtIndexPath:)]) {
|
||||
[_asyncDelegate collectionView:self didEndDisplayingNodeForItemAtIndexPath:indexPath];
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
#pragma mark -
|
||||
#pragma mark ASRangeControllerDelegate.
|
||||
|
||||
- (NSArray *)rangeControllerVisibleNodeIndexPaths:(ASRangeController *)rangeController
|
||||
{
|
||||
ASDisplayNodeAssertMainThread();
|
||||
return [[self indexPathsForVisibleItems] sortedArrayUsingSelector:@selector(compare:)];
|
||||
}
|
||||
|
||||
- (CGSize)rangeControllerViewportSize:(ASRangeController *)rangeController
|
||||
{
|
||||
ASDisplayNodeAssertMainThread();
|
||||
return self.bounds.size;
|
||||
}
|
||||
|
||||
- (NSInteger)rangeControllerSections:(ASRangeController *)rangeController
|
||||
{
|
||||
ASDisplayNodeAssertMainThread();
|
||||
if ([_asyncDataSource respondsToSelector:@selector(numberOfSectionsInCollectionView:)]) {
|
||||
return [_asyncDataSource numberOfSectionsInCollectionView:self];
|
||||
} else {
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
|
||||
- (NSInteger)rangeController:(ASRangeController *)rangeController rowsInSection:(NSInteger)section
|
||||
{
|
||||
ASDisplayNodeAssertMainThread();
|
||||
return [_asyncDataSource collectionView:self numberOfItemsInSection:section];
|
||||
}
|
||||
|
||||
- (ASCellNode *)rangeController:(ASRangeController *)rangeController nodeForIndexPath:(NSIndexPath *)indexPath
|
||||
{
|
||||
ASDisplayNodeAssertNotMainThread();
|
||||
return [_asyncDataSource collectionView:self nodeForItemAtIndexPath:indexPath];
|
||||
}
|
||||
|
||||
- (CGSize)rangeController:(ASRangeController *)rangeController constrainedSizeForNodeAtIndexPath:(NSIndexPath *)indexPath
|
||||
{
|
||||
ASDisplayNodeAssertNotMainThread();
|
||||
CGSize contentSize = [self.collectionViewLayout collectionViewContentSize];
|
||||
CGSize viewSize = self.bounds.size;
|
||||
CGFloat constrainedWidth = viewSize.width == contentSize.width ? viewSize.width : FLT_MAX;
|
||||
CGFloat constrainedHeight = viewSize.height == contentSize.height ? viewSize.height : FLT_MAX;
|
||||
return CGSizeMake(constrainedWidth, constrainedHeight);
|
||||
}
|
||||
|
||||
- (void)rangeController:(ASRangeController *)rangeController didSizeNodesWithIndexPaths:(NSArray *)indexPaths
|
||||
{
|
||||
ASDisplayNodeAssertMainThread();
|
||||
[UIView performWithoutAnimation:^{
|
||||
[self performBatchUpdates:^{
|
||||
// -insertItemsAtIndexPaths: is insufficient; UICollectionView also needs to be notified of section changes
|
||||
NSInteger sectionCount = [super numberOfSections];
|
||||
NSInteger newSectionCount = [_rangeController numberOfSizedSections];
|
||||
if (newSectionCount > sectionCount) {
|
||||
NSRange range = NSMakeRange(sectionCount, newSectionCount - sectionCount);
|
||||
NSIndexSet *sections = [NSIndexSet indexSetWithIndexesInRange:range];
|
||||
[super insertSections:sections];
|
||||
}
|
||||
|
||||
[super insertItemsAtIndexPaths:indexPaths];
|
||||
} completion:nil];
|
||||
}];
|
||||
}
|
||||
|
||||
@end
|
||||
56
AsyncDisplayKit/ASCollectionViewProtocols.h
Normal file
56
AsyncDisplayKit/ASCollectionViewProtocols.h
Normal file
@ -0,0 +1,56 @@
|
||||
/* Copyright (c) 2014-present, Facebook, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* This source code is licensed under the BSD-style license found in the
|
||||
* LICENSE file in the root directory of this source tree. An additional grant
|
||||
* of patent rights can be found in the PATENTS file in the same directory.
|
||||
*/
|
||||
|
||||
/**
|
||||
* This is a subset of UICollectionViewDataSource.
|
||||
*
|
||||
* @see ASCollectionViewDataSource
|
||||
*/
|
||||
@protocol ASCommonCollectionViewDataSource <NSObject>
|
||||
|
||||
@required
|
||||
|
||||
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section;
|
||||
|
||||
@optional
|
||||
|
||||
- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView;
|
||||
|
||||
- (UICollectionReusableView *)collectionView:(UICollectionView *)collectionView viewForSupplementaryElementOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath;
|
||||
|
||||
@end
|
||||
|
||||
|
||||
/**
|
||||
* This is a subset of UICollectionViewDelegate.
|
||||
*
|
||||
* @see ASCollectionViewDelegate
|
||||
*/
|
||||
@protocol ASCommonCollectionViewDelegate <NSObject, UIScrollViewDelegate>
|
||||
|
||||
@optional
|
||||
|
||||
- (UICollectionViewTransitionLayout *)collectionView:(UICollectionView *)collectionView transitionLayoutForOldLayout:(UICollectionViewLayout *)fromLayout newLayout:(UICollectionViewLayout *)toLayout;
|
||||
|
||||
- (void)collectionView:(UICollectionView *)collectionView willDisplaySupplementaryView:(UICollectionReusableView *)view forElementKind:(NSString *)elementKind atIndexPath:(NSIndexPath *)indexPath;
|
||||
- (void)collectionView:(UICollectionView *)collectionView didEndDisplayingSupplementaryView:(UICollectionReusableView *)view forElementOfKind:(NSString *)elementKind atIndexPath:(NSIndexPath *)indexPath;
|
||||
|
||||
- (BOOL)collectionView:(UICollectionView *)collectionView shouldHighlightItemAtIndexPath:(NSIndexPath *)indexPath;
|
||||
- (void)collectionView:(UICollectionView *)collectionView didHighlightItemAtIndexPath:(NSIndexPath *)indexPath;
|
||||
- (void)collectionView:(UICollectionView *)collectionView didUnhighlightItemAtIndexPath:(NSIndexPath *)indexPath;
|
||||
|
||||
- (BOOL)collectionView:(UICollectionView *)collectionView shouldSelectItemAtIndexPath:(NSIndexPath *)indexPath;
|
||||
- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath;
|
||||
- (BOOL)collectionView:(UICollectionView *)collectionView shouldDeselectItemAtIndexPath:(NSIndexPath *)indexPath;
|
||||
- (void)collectionView:(UICollectionView *)collectionView didDeselectItemAtIndexPath:(NSIndexPath *)indexPath;
|
||||
|
||||
- (BOOL)collectionView:(UICollectionView *)collectionView shouldShowMenuForItemAtIndexPath:(NSIndexPath *)indexPath;
|
||||
- (BOOL)collectionView:(UICollectionView *)collectionView canPerformAction:(SEL)action forItemAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender;
|
||||
- (void)collectionView:(UICollectionView *)collectionView performAction:(SEL)action forItemAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender;
|
||||
|
||||
@end
|
||||
@ -16,4 +16,5 @@
|
||||
#import <AsyncDisplayKit/ASMultiplexImageNode.h>
|
||||
|
||||
#import <AsyncDisplayKit/ASTableView.h>
|
||||
#import <AsyncDisplayKit/ASCollectionView.h>
|
||||
#import <AsyncDisplayKit/ASCellNode.h>
|
||||
|
||||
@ -14,8 +14,8 @@
|
||||
#import "ASRangeControllerInternal.h"
|
||||
|
||||
typedef NS_ENUM(NSInteger, ASScrollDirection) {
|
||||
ASScrollDirectionUp,
|
||||
ASScrollDirectionDown,
|
||||
ASScrollDirectionBackward,
|
||||
ASScrollDirectionForward,
|
||||
};
|
||||
|
||||
@interface ASRangeController () {
|
||||
@ -283,7 +283,7 @@ static BOOL ASRangeIsValid(NSRange range)
|
||||
_visibleRange = _workingRange = NSMakeRange(NSNotFound, 0);
|
||||
_sizedNodeCount = 0;
|
||||
_nodeSizes = [NSMutableArray array];
|
||||
_scrollDirection = ASScrollDirectionDown;
|
||||
_scrollDirection = ASScrollDirectionForward;
|
||||
_workingIndexPaths = [NSMutableOrderedSet orderedSet];
|
||||
|
||||
// don't bother sizing if the data source is empty
|
||||
@ -413,34 +413,38 @@ static NSRange ASCalculateWorkingRange(ASRangeTuningParameters params, ASScrollD
|
||||
ASDisplayNodeCAssert(NSMaxRange(visibleRange) <= nodeSizes.count, @"nodes can't be visible until they're sized");
|
||||
|
||||
// extend the visible range by enough nodes to fill at least the requested number of screenfuls
|
||||
// NB. this logic assumes (UITableView-style) vertical scrolling and would need to be changed for ASCollectionView
|
||||
// NB. this logic assumes there is no overlap between nodes. It also doesn't
|
||||
// take spacing between nodes into account.
|
||||
CGFloat viewportArea = viewport.width * viewport.height;
|
||||
CGFloat minUpperBufferSize, minLowerBufferSize;
|
||||
switch (scrollDirection) {
|
||||
case ASScrollDirectionUp:
|
||||
minUpperBufferSize = viewport.height * params.leadingBufferScreenfuls;
|
||||
minLowerBufferSize = viewport.height * params.trailingBufferScreenfuls;
|
||||
case ASScrollDirectionBackward:
|
||||
minUpperBufferSize = viewportArea * params.leadingBufferScreenfuls;
|
||||
minLowerBufferSize = viewportArea * params.trailingBufferScreenfuls;
|
||||
break;
|
||||
|
||||
case ASScrollDirectionDown:
|
||||
minUpperBufferSize = viewport.height * params.trailingBufferScreenfuls;
|
||||
minLowerBufferSize = viewport.height * params.leadingBufferScreenfuls;
|
||||
case ASScrollDirectionForward:
|
||||
minUpperBufferSize = viewportArea * params.trailingBufferScreenfuls;
|
||||
minLowerBufferSize = viewportArea * params.leadingBufferScreenfuls;
|
||||
break;
|
||||
}
|
||||
|
||||
// "top" buffer (above the screen, if we're scrolling vertically)
|
||||
NSInteger upperBuffer = 0;
|
||||
CGFloat upperBufferHeight = 0.0f;
|
||||
for (NSInteger idx = visibleRange.location - 1; idx >= 0 && upperBufferHeight < minUpperBufferSize; idx--) {
|
||||
CGFloat upperBufferArea = 0.0f;
|
||||
for (NSInteger idx = visibleRange.location - 1; idx >= 0 && upperBufferArea < minUpperBufferSize; idx--) {
|
||||
upperBuffer++;
|
||||
upperBufferHeight += [nodeSizes[idx] CGSizeValue].height;
|
||||
CGSize nodeSize = [nodeSizes[idx] CGSizeValue];
|
||||
upperBufferArea += nodeSize.width * nodeSize.height;
|
||||
}
|
||||
|
||||
// "bottom" buffer (below the screen, if we're scrolling vertically)
|
||||
NSInteger lowerBuffer = 0;
|
||||
CGFloat lowerBufferHeight = 0.0f;
|
||||
for (NSInteger idx = NSMaxRange(visibleRange); idx < nodeSizes.count && lowerBufferHeight < minLowerBufferSize; idx++) {
|
||||
CGFloat lowerBufferArea = 0.0f;
|
||||
for (NSInteger idx = NSMaxRange(visibleRange); idx < nodeSizes.count && lowerBufferArea < minLowerBufferSize; idx++) {
|
||||
lowerBuffer++;
|
||||
lowerBufferHeight += [nodeSizes[idx] CGSizeValue].height;
|
||||
CGSize nodeSize = [nodeSizes[idx] CGSizeValue];
|
||||
lowerBufferArea += nodeSize.width * nodeSize.height;
|
||||
}
|
||||
|
||||
return NSMakeRange(visibleRange.location - upperBuffer,
|
||||
@ -459,9 +463,9 @@ static NSRange ASCalculateWorkingRange(ASRangeTuningParameters params, ASScrollD
|
||||
// figure out where we're going, because that's where the bulk of the working range needs to be
|
||||
NSInteger scrollDelta = _visibleRange.location - previouslyVisible.location;
|
||||
if (scrollDelta < 0)
|
||||
_scrollDirection = ASScrollDirectionUp;
|
||||
_scrollDirection = ASScrollDirectionBackward;
|
||||
if (scrollDelta > 0)
|
||||
_scrollDirection = ASScrollDirectionDown;
|
||||
_scrollDirection = ASScrollDirectionForward;
|
||||
|
||||
[self recalculateWorkingRange];
|
||||
}
|
||||
|
||||
@ -0,0 +1,340 @@
|
||||
// !$*UTF8*$!
|
||||
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|
||||
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|
||||
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|
||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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//
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// AppDelegate.h
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// CollectionViewSample
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//
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// Created by Huy Nguyen on 11/11/14.
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// Copyright (c) 2014 Facebook. All rights reserved.
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//
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@end
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/* This file provided by Facebook is for non-commercial testing and evaluation
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* purposes only. Facebook reserves all rights not expressly granted.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
||||
* FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/* This file provided by Facebook is for non-commercial testing and evaluation
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*
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|
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
|
||||
|
||||
#import <UIKit/UIKit.h>
|
||||
|
||||
@interface ViewController : UIViewController
|
||||
|
||||
@end
|
||||
@ -0,0 +1,81 @@
|
||||
/* This file provided by Facebook is for non-commercial testing and evaluation
|
||||
* purposes only. Facebook reserves all rights not expressly granted.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
||||
* FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
*/
|
||||
|
||||
#import "ViewController.h"
|
||||
|
||||
#import <AsyncDisplayKit/AsyncDisplayKit.h>
|
||||
|
||||
@interface ViewController () <ASCollectionViewDataSource, ASCollectionViewDelegate>
|
||||
{
|
||||
ASCollectionView *_collectionView;
|
||||
}
|
||||
|
||||
@end
|
||||
|
||||
|
||||
@implementation ViewController
|
||||
|
||||
#pragma mark -
|
||||
#pragma mark UIViewController.
|
||||
|
||||
- (instancetype)init
|
||||
{
|
||||
if (!(self = [super init]))
|
||||
return nil;
|
||||
|
||||
UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc] init];
|
||||
layout.scrollDirection = UICollectionViewScrollDirectionHorizontal;
|
||||
|
||||
_collectionView = [[ASCollectionView alloc] initWithFrame:CGRectZero collectionViewLayout:layout];
|
||||
_collectionView.asyncDataSource = self;
|
||||
_collectionView.asyncDelegate = self;
|
||||
_collectionView.backgroundColor = [UIColor whiteColor];
|
||||
|
||||
return self;
|
||||
}
|
||||
|
||||
- (void)viewDidLoad
|
||||
{
|
||||
[super viewDidLoad];
|
||||
|
||||
[self.view addSubview:_collectionView];
|
||||
}
|
||||
|
||||
- (void)viewWillLayoutSubviews
|
||||
{
|
||||
_collectionView.frame = self.view.bounds;
|
||||
}
|
||||
|
||||
- (BOOL)prefersStatusBarHidden
|
||||
{
|
||||
return YES;
|
||||
}
|
||||
|
||||
|
||||
#pragma mark -
|
||||
#pragma mark ASCollectionView data source.
|
||||
|
||||
- (ASCellNode *)collectionView:(ASCollectionView *)collectionView nodeForItemAtIndexPath:(NSIndexPath *)indexPath
|
||||
{
|
||||
NSString *text = [NSString stringWithFormat:@"[%ld.%ld] says hi", indexPath.section, indexPath.item];
|
||||
ASTextCellNode *node = [[ASTextCellNode alloc] init];
|
||||
node.text = text;
|
||||
node.backgroundColor = [UIColor lightGrayColor];
|
||||
|
||||
return node;
|
||||
}
|
||||
|
||||
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
|
||||
{
|
||||
return 300;
|
||||
}
|
||||
|
||||
@end
|
||||
16
examples/CollectionViewSample/CollectionViewSample/main.m
Normal file
16
examples/CollectionViewSample/CollectionViewSample/main.m
Normal file
@ -0,0 +1,16 @@
|
||||
//
|
||||
// main.m
|
||||
// CollectionViewSample
|
||||
//
|
||||
// Created by Huy Nguyen on 11/11/14.
|
||||
// Copyright (c) 2014 Facebook. All rights reserved.
|
||||
//
|
||||
|
||||
#import <UIKit/UIKit.h>
|
||||
#import "AppDelegate.h"
|
||||
|
||||
int main(int argc, char * argv[]) {
|
||||
@autoreleasepool {
|
||||
return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
|
||||
}
|
||||
}
|
||||
3
examples/CollectionViewSample/Podfile
Normal file
3
examples/CollectionViewSample/Podfile
Normal file
@ -0,0 +1,3 @@
|
||||
source 'https://github.com/CocoaPods/Specs.git'
|
||||
platform :ios, '8.0'
|
||||
pod 'AsyncDisplayKit', :path => '../..'
|
||||
Loading…
x
Reference in New Issue
Block a user