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libs-gui/Headers/AppKit/NSCollectionView.h
Gregory John Casamento 8572458a5d Add methods and actions for layout classes as well as the abstract classes for NSCollectionViewLayout. 
Declarations added to collectionview layout header.

Clean compile for NSCollectionViewLayout abstract class

Add header for NSCollectionViewFlowLayout.h

Add skeleton implementation of NSCollectionViewFlowLayout

Add implementation for simple setter/getter methods.

Correct compilation error with non-clang compilers

Fix compilation issues

Add getter/setter for collectionViewLayout

Skeleton of NSCollectionViewTransitionLayout implementation

Add encoding/decoding for collectionViewLayout key

Make NSCollectionViewGridLayout default if the NSCollectionViewLayoutKey is not set

Add protocols for DataSource and Prefetching for NSCollectionView

Add 10.11 methods to delegate declaration

remove templating from NSCollectionViewDelegate that gcc can't handle.

New delegate methods for NSCollectionViewDelegate to support NSSets of NSIndexPaths and multiple selection.

Reset .travis.yml to the proper version and modify NSCollectionView.h to use forward declarations for both NSPasteboard and NSPasteboardWriting so that we don't explicitly import.

Add declarations for missing methods from 10.11 version of NSCollectionView

Add new methods for 10.11 for moving, deleting and collapsing sections.

Add new methods from 10.11

Add the remaining missing methods as well as delcarations for blocks needed for batch handler and completion handler.

Add skeleton implementations for all new methods

Changes to add new methods to collection view for delegate

Consolidate the registeredClass and registeredNib maps.

Implementation of dataSource related methods

Implment nib loading for NSCollectionViewItem subclasses

Remove uneeded ivars, add categories for override and layout

Minor formatting change

Update categories and organization of code

Add init method to NSCollectionViewFlowLayoutInvalidationContext

Add collectionview layout subclasses

Declarations added to collectionview layout header.

Clean compile for NSCollectionViewLayout abstract class

Add skeleton implementation of NSCollectionViewFlowLayout

Add implementation for simple setter/getter methods.

Correct compilation error with non-clang compilers

Fix compilation issues

Add getter/setter for collectionViewLayout

Add encoding/decoding for collectionViewLayout key

Make NSCollectionViewGridLayout default if the NSCollectionViewLayoutKey is not set

Add protocols for DataSource and Prefetching for NSCollectionView

New delegate methods for NSCollectionViewDelegate to support NSSets of NSIndexPaths and multiple selection.

Reset .travis.yml to the proper version and modify NSCollectionView.h to use forward declarations for both NSPasteboard and NSPasteboardWriting so that we don't explicitly import.

Add declarations for missing methods from 10.11 version of NSCollectionView

Add new methods for 10.11 for moving, deleting and collapsing sections.

Add new methods from 10.11

Changes to add new methods to collection view for delegate

Consolidate the registeredClass and registeredNib maps.

Add init method to NSCollectionViewFlowLayoutInvalidationContext

Fix issues with rebase
2023-01-30 10:48:02 -05:00

546 lines
19 KiB
Objective-C
Raw Blame History

/* -*-objc-*-
NSCollectionView.h
Copyright (C) 2013,2021 Free Software Foundation, Inc.
Author: Doug Simons (doug.simons@testplant.com)
Frank LeGrand (frank.legrand@testplant.com)
Gregory Casamento (greg.casamento@gmail.com)
(Adding new delegate methods and support for layouts)
Date: February 2013, December 2021
This file is part of the GNUstep GUI Library.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; see the file COPYING.LIB.
If not, see <http://www.gnu.org/licenses/> or write to the
Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef _GNUstep_H_NSCollectionView
#define _GNUstep_H_NSCollectionView
#import <AppKit/AppKitDefines.h>
#import <AppKit/NSDragging.h>
#import <AppKit/NSNibDeclarations.h>
#import <AppKit/NSView.h>
@class NSCollectionViewItem;
@class NSCollectionView;
@class NSCollectionViewLayout;
@class NSCollectionViewLayoutAttributes;
@class NSCollectionViewTransitionLayout;
@class NSPasteboard;
@class NSNib;
@class NSMapTable;
@class NSMutableArray;
@class NSMutableDictionary;
@class NSMutableSet;
@class NSMapTable;
@class NSMutableArray;
@class NSMutableDictionary;
@class NSMutableSet;
@protocol NSPasteboardWriting;
enum
{
NSCollectionViewDropOn = 0,
NSCollectionViewDropBefore = 1,
};
typedef NSInteger NSCollectionViewDropOperation;
#if OS_API_VERSION(MAC_OS_X_VERSION_10_11, GS_API_LATEST)
enum {
NSCollectionViewItemHighlightNone = 0,
NSCollectionViewItemHighlightForSelection = 1,
NSCollectionViewItemHighlightForDeselection = 2,
NSCollectionViewItemHighlightAsDropTarget = 3,
};
typedef NSInteger NSCollectionViewItemHighlightState;
enum {
NSCollectionViewScrollPositionNone = 0,
/*
* Vertical positions are mutually exclusive to each other, but are bitwise or-able with
* the horizontal scroll positions. Combining positions from the same grouping
* (horizontal or vertical) will result in an NSInvalidArgumentException.
*/
NSCollectionViewScrollPositionTop = 1 << 0,
NSCollectionViewScrollPositionCenteredVertically = 1 << 1,
NSCollectionViewScrollPositionBottom = 1 << 2,
NSCollectionViewScrollPositionNearestHorizontalEdge = 1 << 9, /* Nearer of Top,Bottom */
/*
* Likewise, the horizontal positions are mutually exclusive to each other.
*/
NSCollectionViewScrollPositionLeft = 1 << 3,
NSCollectionViewScrollPositionCenteredHorizontally = 1 << 4,
NSCollectionViewScrollPositionRight = 1 << 5,
NSCollectionViewScrollPositionLeadingEdge = 1 << 6, /* Left if LTR, Right if RTL */
NSCollectionViewScrollPositionTrailingEdge = 1 << 7, /* Right if LTR, Left, if RTL */
NSCollectionViewScrollPositionNearestVerticalEdge = 1 << 8, /* Nearer of Leading,Trailing */
};
typedef NSUInteger NSCollectionViewScrollPosition;
#endif
typedef NSString *NSCollectionViewSupplementaryElementKind;
typedef NSString *NSUserInterfaceItemIdentifier;
#if OS_API_VERSION(MAC_OS_X_VERSION_10_11, GS_API_LATEST)
@protocol NSCollectionViewDataSource <NSObject>
#if GS_PROTOCOLS_HAVE_OPTIONAL
@required
#endif
- (NSInteger) collectionView: (NSCollectionView *)collectionView
numberOfItemsInSection: (NSInteger)section;
- (NSCollectionViewItem *) collectionView: (NSCollectionView *)collectionView
itemForRepresentedObjectAtIndexPath: (NSIndexPath *)indexPath;
#if GS_PROTOCOLS_HAVE_OPTIONAL
@optional
#endif
- (NSInteger) numberOfSectionsInCollectionView: (NSCollectionView *)collectionView;
- (NSView *) collectionView: (NSCollectionView *)collectionView
viewForSupplementaryElementOfKind: (NSCollectionViewSupplementaryElementKind)kind
atIndexPath:(NSIndexPath *)indexPath;
@end
#endif
#if OS_API_VERSION(MAC_OS_X_VERSION_10_11, GS_API_LATEST)
@protocol NSCollectionViewPrefetching <NSObject>
#if GS_PROTOCOLS_HAVE_OPTIONAL
@required
#endif
- (void)collectionView:(NSCollectionView *)collectionView prefetchItemsAtIndexPaths:(NSArray *)indexPaths;
#if GS_PROTOCOLS_HAVE_OPTIONAL
@optional
#endif
- (void)collectionView:(NSCollectionView *)collectionView cancelPrefetchingForItemsAtIndexPaths:(NSArray *)indexPaths;
@end
#endif
@protocol NSCollectionViewDelegate <NSObject>
#if GS_PROTOCOLS_HAVE_OPTIONAL
@optional
#endif
#if OS_API_VERSION(MAC_OS_X_VERSION_10_11, GS_API_LATEST)
- (BOOL) collectionView: (NSCollectionView *)collectionView
canDragItemsAtIndexPaths: (NSSet *)indexPaths
withEvent: (NSEvent *)event;
#endif
#if OS_API_VERSION(MAC_OS_X_VERSION_10_6, GS_API_LATEST)
- (BOOL) collectionView: (NSCollectionView *)collectionView
canDragItemsAtIndexes: (NSIndexSet *)indexes
withEvent: (NSEvent *)event;
#endif
#if OS_API_VERSION(MAC_OS_X_VERSION_10_11, GS_API_LATEST)
- (BOOL) collectionView: (NSCollectionView *)collectionView
writeItemsAtIndexPaths: (NSSet *)indexPaths
toPasteboard: (NSPasteboard *)pasteboard;
#endif
#if OS_API_VERSION(MAC_OS_X_VERSION_10_6, GS_API_LATEST)
- (BOOL) collectionView: (NSCollectionView *)collectionView
writeItemsAtIndexes: (NSIndexSet *)indexes
toPasteboard: (NSPasteboard *)pasteboard;
#endif
#if OS_API_VERSION(MAC_OS_X_VERSION_10_11, GS_API_LATEST)
- (NSArray *) collectionView: (NSCollectionView *)collectionView
namesOfPromisedFilesDroppedAtDestination: (NSURL *)dropURL
forDraggedItemsAtIndexPaths: (NSSet *)indexPaths;
#endif
#if OS_API_VERSION(MAC_OS_X_VERSION_10_6, GS_API_LATEST)
- (NSArray *) collectionView: (NSCollectionView *)collectionView
namesOfPromisedFilesDroppedAtDestination: (NSURL *)dropURL
forDraggedItemsAtIndexes: (NSIndexSet *)indexes;
#endif
#if OS_API_VERSION(MAC_OS_X_VERSION_10_11, GS_API_LATEST)
- (NSImage *) collectionView: (NSCollectionView *)collectionView
draggingImageForItemsAtIndexPaths: (NSSet *)indexPaths
withEvent: (NSEvent *)event
offset: (NSPointPointer)dragImageOffset;
#endif
#if OS_API_VERSION(MAC_OS_X_VERSION_10_6, GS_API_LATEST)
- (NSImage *) collectionView: (NSCollectionView *)collectionView
draggingImageForItemsAtIndexes: (NSIndexSet *)indexes
withEvent: (NSEvent *)event
offset: (NSPointPointer)dragImageOffset;
#endif
#if OS_API_VERSION(MAC_OS_X_VERSION_10_11, GS_API_LATEST)
- (NSDragOperation) collectionView: (NSCollectionView *)collectionView
validateDrop: (id < NSDraggingInfo >)draggingInfo
proposedIndexPath: (NSIndexPath **)proposedDropIndexPath
dropOperation: (NSCollectionViewDropOperation *)proposedDropOperation;
#endif
#if OS_API_VERSION(MAC_OS_X_VERSION_10_6, GS_API_LATEST)
- (NSDragOperation) collectionView: (NSCollectionView *)collectionView
validateDrop: (id < NSDraggingInfo >)draggingInfo
proposedIndex: (NSInteger *)proposedDropIndex
dropOperation: (NSCollectionViewDropOperation *)proposedDropOperation;
#endif
#if OS_API_VERSION(MAC_OS_X_VERSION_10_11, GS_API_LATEST)
- (BOOL) collectionView: (NSCollectionView *)collectionView
acceptDrop: (id < NSDraggingInfo >)draggingInfo
indexPath: (NSIndexPath *)indexPath
dropOperation: (NSCollectionViewDropOperation)dropOperation;
#endif
#if OS_API_VERSION(MAC_OS_X_VERSION_10_6, GS_API_LATEST)
- (BOOL) collectionView: (NSCollectionView *)collectionView
acceptDrop: (id < NSDraggingInfo >)draggingInfo
index: (NSInteger)index
dropOperation: (NSCollectionViewDropOperation)dropOperation;
#endif
/* Multi-image drag and drop */
#if OS_API_VERSION(MAC_OS_X_VERSION_10_11, GS_API_LATEST)
- (id <NSPasteboardWriting>) collectionView: (NSCollectionView *)collectionView
pasteboardWriterForItemAtIndexPath: (NSIndexPath *)indexPath;
#endif
- (id <NSPasteboardWriting>) collectionView: (NSCollectionView *)collectionView
pasteboardWriterForItemAtIndex: (NSUInteger)index;
#if OS_API_VERSION(MAC_OS_X_VERSION_10_11, GS_API_LATEST)
- (void) collectionView: (NSCollectionView *)collectionView
draggingSession: (NSDraggingSession *)session
willBeginAtPoint: (NSPoint)screenPoint
forItemsAtIndexPaths: (NSSet *)indexPaths;
#endif
- (void) collectionView: (NSCollectionView *)collectionView
draggingSession: (NSDraggingSession *)session
willBeginAtPoint: (NSPoint)screenPoint
forItemsAtIndexes: (NSIndexSet *)indexes;
- (void) collectionView: (NSCollectionView *)collectionView
draggingSession: (NSDraggingSession *)session
endedAtPoint: (NSPoint)screenPoint
dragOperation: (NSDragOperation)operation;
- (void) collectionView: (NSCollectionView *)collectionView
updateDraggingItemsForDrag: (id <NSDraggingInfo>)draggingInfo;
/* Selection and Highlighting */
#if OS_API_VERSION(MAC_OS_X_VERSION_10_11, GS_API_LATEST)
- (NSSet *) collectionView: (NSCollectionView *)collectionView
shouldChangeItemsAtIndexPaths: (NSSet *)indexPaths
toHighlightState: (NSCollectionViewItemHighlightState)highlightState;
- (void) collectionView: (NSCollectionView *)collectionView
didChangeItemsAtIndexPaths: (NSSet *)indexPaths
toHighlightState: (NSCollectionViewItemHighlightState)highlightState;
- (NSSet *) collectionView: (NSCollectionView *)collectionView
shouldSelectItemsAtIndexPaths: (NSSet *)indexPaths;
- (NSSet *) collectionView: (NSCollectionView *)collectionView shouldDeselectItemsAtIndexPaths: (NSSet *)indexPaths;
- (void) collectionView: (NSCollectionView *)collectionView didSelectItemsAtIndexPaths: (NSSet *)indexPaths;
- (void) collectionView: (NSCollectionView *)collectionView didDeselectItemsAtIndexPaths: (NSSet *)indexPaths;
/* Display Notification */
- (void) collectionView: (NSCollectionView *)collectionView
willDisplayItem: (NSCollectionViewItem *)item
forRepresentedObjectAtIndexPath: (NSIndexPath *)indexPath;
- (void) collectionView: (NSCollectionView *)collectionView
willDisplaySupplementaryView: (NSView *)view
forElementKind: (NSCollectionViewSupplementaryElementKind)elementKind
atIndexPath: (NSIndexPath *)indexPath;
- (void) collectionView: (NSCollectionView *)collectionView
didEndDisplayingItem: (NSCollectionViewItem *)item
forRepresentedObjectAtIndexPath: (NSIndexPath *)indexPath;
- (void) collectionView: (NSCollectionView *)collectionView
didEndDisplayingSupplementaryView: (NSView *)view
forElementOfKind: (NSCollectionViewSupplementaryElementKind)elementKind
atIndexPath: (NSIndexPath *)indexPath;
/* Layout Transition Support */
- (NSCollectionViewTransitionLayout *) collectionView: (NSCollectionView *)collectionView
transitionLayoutForOldLayout: (NSCollectionViewLayout *)fromLayout
newLayout: (NSCollectionViewLayout *)toLayout;
#endif
@end
APPKIT_EXPORT_CLASS
@interface NSCollectionView : NSView //<NSDraggingDestination, NSDraggingSource>
{
NSArray *_content;
IBOutlet NSCollectionViewItem *itemPrototype;
NSMutableArray *_items;
BOOL _allowsMultipleSelection;
BOOL _isSelectable;
BOOL _allowsEmptySelection;
NSIndexSet *_selectionIndexes;
NSArray *_backgroundColors;
IBOutlet id <NSCollectionViewDelegate> _delegate;
IBOutlet id <NSCollectionViewDataSource> _dataSource;
IBOutlet NSView *_backgroundView;
IBOutlet id <NSCollectionViewPrefetching> _prefetchDataSource;
BOOL _backgroundViewScrollsWithContent;
NSSize _itemSize;
NSSize _maxItemSize;
NSSize _minItemSize;
CGFloat _tileWidth;
CGFloat _verticalMargin;
CGFloat _horizontalMargin;
NSUInteger _maxNumberOfColumns;
NSUInteger _maxNumberOfRows;
NSUInteger _numberOfColumns;
NSDragOperation _draggingSourceOperationMaskForLocal;
NSDragOperation _draggingSourceOperationMaskForRemote;
NSUInteger _draggingOnRow;
NSUInteger _draggingOnIndex;
NSCollectionViewLayout *_collectionViewLayout;
// Managing items
NSArray *_visibleItems;
NSSet *_indexPathsForVisibleItems;
NSDictionary *_visibleSupplementaryViews;
NSSet *_indexPathsForSupplementaryElementsOfKind;
// Registered class/nib for item identifier
NSMapTable *_registeredNibs;
NSMapTable *_registeredClasses;
// Registered class/nib for item kind & identifier
NSMapTable *_registeredNibForItemWithIdentifier;
NSMapTable *_registeredClassForItemWithIdentifier;
}
- (BOOL) allowsMultipleSelection;
- (void) setAllowsMultipleSelection: (BOOL)flag;
- (NSArray *) backgroundColors;
- (void) setBackgroundColors: (NSArray *)colors;
- (NSArray *) content;
- (void) setContent: (NSArray *)content;
- (id < NSCollectionViewDelegate >) delegate;
- (void) setDelegate: (id < NSCollectionViewDelegate >)aDelegate;
- (NSCollectionViewItem *) itemPrototype;
- (void) setItemPrototype: (NSCollectionViewItem *)prototype;
- (NSSize) maxItemSize;
- (void) setMaxItemSize: (NSSize)size;
- (NSUInteger) maxNumberOfColumns;
- (void) setMaxNumberOfColumns: (NSUInteger)number;
- (NSUInteger) maxNumberOfRows;
- (void) setMaxNumberOfRows: (NSUInteger)number;
- (NSSize) minItemSize;
- (void) setMinItemSize: (NSSize)size;
- (BOOL) isSelectable;
- (void) setSelectable: (BOOL)flag;
- (NSIndexSet *) selectionIndexes;
- (void) setSelectionIndexes: (NSIndexSet *)indexes;
#if OS_API_VERSION(MAC_OS_X_VERSION_10_11, GS_API_LATEST)
- (NSCollectionViewLayout *) collectionViewLayout;
- (void) setCollectionViewLayout: (NSCollectionViewLayout *)layout;
#endif
- (NSRect) frameForItemAtIndex: (NSUInteger)index;
- (NSCollectionViewItem *) itemAtIndex: (NSUInteger)index;
- (NSCollectionViewItem *) newItemForRepresentedObject: (id)object;
- (void) tile;
- (void) setDraggingSourceOperationMask: (NSDragOperation)dragOperationMask
forLocal: (BOOL)localDestination;
- (NSImage *) draggingImageForItemsAtIndexes: (NSIndexSet *)indexes
withEvent: (NSEvent *)event
offset: (NSPointPointer)dragImageOffset;
#if OS_API_VERSION(MAC_OS_X_VERSION_10_11, GS_API_LATEST)
/* Locating Items and Views */
- (NSArray *) visibleItems;
- (NSSet *) indexPathsForVisibleItems;
- (NSArray *) visibleSupplementaryViewsOfKind: (NSCollectionViewSupplementaryElementKind)elementKind;
- (NSSet *) indexPathsForVisibleSupplementaryElementsOfKind: (NSCollectionViewSupplementaryElementKind)elementKind;
- (NSIndexPath *) indexPathForItem: (NSCollectionViewItem *)item;
- (NSIndexPath *) indexPathForItemAtPoint: (NSPoint)point;
- (NSCollectionViewItem *) itemAtIndexPath: (NSIndexPath *)indexPath;
- (NSView *)supplementaryViewForElementKind: (NSCollectionViewSupplementaryElementKind)elementKind
atIndexPath: (NSIndexPath *)indexPath;
- (void) scrollToItemsAtIndexPaths: (NSSet *)indexPaths
scrollPosition: (NSCollectionViewScrollPosition)scrollPosition;
/* Creating Collection view Items */
- (NSCollectionViewItem *) makeItemWithIdentifier: (NSUserInterfaceItemIdentifier)identifier
forIndexPath: (NSIndexPath *)indexPath;
- (void) registerClass: (Class)itemClass
forItemWithIdentifier: (NSUserInterfaceItemIdentifier)identifier;
- (void) registerNib: (NSNib *)nib
forItemWithIdentifier: (NSUserInterfaceItemIdentifier)identifier;
- (NSView *) makeSupplementaryViewOfKind: (NSCollectionViewSupplementaryElementKind)elementKind
withIdentifier: (NSUserInterfaceItemIdentifier)identifier
forIndexPath: (NSIndexPath *)indexPath;
- (void)registerClass: (Class)viewClass
forSupplementaryViewOfKind: (NSCollectionViewSupplementaryElementKind)kind
withIdentifier:(NSUserInterfaceItemIdentifier)identifier;
- (void) registerNib: (NSNib *)nib
forSupplementaryViewOfKind: (NSCollectionViewSupplementaryElementKind)kind
withIdentifier: (NSUserInterfaceItemIdentifier)identifier;
/* Providing the collection view's data */
- (id<NSCollectionViewDataSource>) dataSource;
- (void) setDataSource: (id<NSCollectionViewDataSource>)dataSource;
/* Configuring the Collection view */
- (NSView *) backgroundView;
- (void) setBackgroundView: (NSView *)backgroundView;
- (BOOL) backgroundViewScrollsWithContent;
- (void) setBackgroundViewScrollsWithContent: (BOOL)f;
/* Reloading Content */
- (void) reloadData;
- (void) reloadSections: (NSIndexSet *)sections;
- (void) reloadItemsAtIndexPaths: (NSSet *)indexPaths;
/* Prefetching Collection View Cells and Data */
- (id<NSCollectionViewPrefetching>) prefetchDataSource;
- (void) setPrefetchDataSource: (id<NSCollectionViewPrefetching>)prefetchDataSource;
/* Getting the State of the Collection View */
- (NSInteger) numberOfSections;
- (NSInteger) numberOfItemsInSection: (NSInteger)section;
/* Inserting, Moving and Deleting Items */
- (void) insertItemsAtIndexPaths: (NSSet *)indexPaths;
- (void) moveItemAtIndexPath: (NSIndexPath *)indexPath
toIndexPath: (NSIndexPath *)newIndexPath;
- (void) deleteItemsAtIndexPaths: (NSSet *)indexPaths;
/* Inserting, Moving, Deleting and Collapsing Sections */
- (void) insertSections: (NSIndexSet *)sections;
- (void) moveSection: (NSInteger)section
toSection: (NSInteger)newSection;
- (void) deleteSections: (NSIndexSet *)sections;
#endif
#if OS_API_VERSION(MAC_OS_X_VERSION_10_12, GS_API_LATEST)
- (IBAction) toggleSectionCollapse: (id)sender;
#endif
#if OS_API_VERSION(MAC_OS_X_VERSION_10_11, GS_API_LATEST)
- (BOOL) allowsEmptySelection;
- (void) setAllowsEmptySelection: (BOOL)flag;
- (NSSet *) selectionIndexPaths; // copy
- (IBAction) selectAll: (id)sender;
- (IBAction) deselectAll: (id)sender;
- (void) selectItemsAtIndexPaths: (NSSet *)indexPaths
scrollPosition: (NSCollectionViewScrollPosition)scrollPosition;
- (void) deselectItemsAtIndexPaths: (NSSet *)indexPaths;
/* Getting Layout Information */
- (NSCollectionViewLayoutAttributes *) layoutAttributesForItemAtIndexPath: (NSIndexPath *)indexPath;
- (NSCollectionViewLayoutAttributes *) layoutAttributesForSupplementaryElementOfKind: (NSCollectionViewSupplementaryElementKind)kind
atIndexPath: (NSIndexPath *)indexPath;
/* Animating Multiple Changes */
DEFINE_BLOCK_TYPE_NO_ARGS(GSCollectionViewPerformBatchUpdatesBlock, void);
DEFINE_BLOCK_TYPE(GSCollectionViewCompletionHandlerBlock, void, BOOL);
- (void) performBatchUpdates: (GSCollectionViewPerformBatchUpdatesBlock) updates
completionHandler: (GSCollectionViewCompletionHandlerBlock) completionHandler;
#endif
@end
#endif /* _GNUstep_H_NSCollectionView */
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