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74 lines
3.6 KiB
Objective-C
74 lines
3.6 KiB
Objective-C
//
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// PSTCollectionViewCommon.h
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// PSPDFKit
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//
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// Copyright (c) 2012-2013 Peter Steinberger. All rights reserved.
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//
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#import <Foundation/Foundation.h>
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#import <UIKit/UIKit.h>
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// Mostly a debug feature, makes classes from UICollection* compatible with PSTCollection*
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// (e.g. adding the "real" UICollectionViewFlowLayout to PSTCollectionView.
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//#define kPSUIInteroperabilityEnabled
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@class PSTCollectionView, PSTCollectionViewCell, PSTCollectionReusableView;
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@protocol PSTCollectionViewDataSource <NSObject>
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@required
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- (NSInteger)collectionView:(PSTCollectionView *)collectionView numberOfItemsInSection:(NSInteger)section;
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// The cell that is returned must be retrieved from a call to -dequeueReusableCellWithReuseIdentifier:forIndexPath:
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- (PSTCollectionViewCell *)collectionView:(PSTCollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath;
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@optional
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- (NSInteger)numberOfSectionsInCollectionView:(PSTCollectionView *)collectionView;
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// The view that is returned must be retrieved from a call to -dequeueReusableSupplementaryViewOfKind:withReuseIdentifier:forIndexPath:
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- (PSTCollectionReusableView *)collectionView:(PSTCollectionView *)collectionView viewForSupplementaryElementOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath;
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@end
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@protocol PSTCollectionViewDelegate <UIScrollViewDelegate>
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@optional
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// Methods for notification of selection/deselection and highlight/unhighlight events.
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// The sequence of calls leading to selection from a user touch is:
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//
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// (when the touch begins)
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// 1. -collectionView:shouldHighlightItemAtIndexPath:
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// 2. -collectionView:didHighlightItemAtIndexPath:
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//
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// (when the touch lifts)
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// 3. -collectionView:shouldSelectItemAtIndexPath: or -collectionView:shouldDeselectItemAtIndexPath:
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// 4. -collectionView:didSelectItemAtIndexPath: or -collectionView:didDeselectItemAtIndexPath:
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// 5. -collectionView:didUnhighlightItemAtIndexPath:
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- (BOOL)collectionView:(PSTCollectionView *)collectionView shouldHighlightItemAtIndexPath:(NSIndexPath *)indexPath;
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- (void)collectionView:(PSTCollectionView *)collectionView didHighlightItemAtIndexPath:(NSIndexPath *)indexPath;
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- (void)collectionView:(PSTCollectionView *)collectionView didUnhighlightItemAtIndexPath:(NSIndexPath *)indexPath;
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- (BOOL)collectionView:(PSTCollectionView *)collectionView shouldSelectItemAtIndexPath:(NSIndexPath *)indexPath;
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- (BOOL)collectionView:(PSTCollectionView *)collectionView shouldDeselectItemAtIndexPath:(NSIndexPath *)indexPath; // called when the user taps on an already-selected item in multi-select mode
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- (void)collectionView:(PSTCollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath;
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- (void)collectionView:(PSTCollectionView *)collectionView didDeselectItemAtIndexPath:(NSIndexPath *)indexPath;
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- (void)collectionView:(PSTCollectionView *)collectionView didEndDisplayingCell:(PSTCollectionViewCell *)cell forItemAtIndexPath:(NSIndexPath *)indexPath;
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- (void)collectionView:(PSTCollectionView *)collectionView didEndDisplayingSupplementaryView:(PSTCollectionReusableView *)view forElementOfKind:(NSString *)elementKind atIndexPath:(NSIndexPath *)indexPath;
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// These methods provide support for copy/paste actions on cells.
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// All three should be implemented if any are.
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- (BOOL)collectionView:(PSTCollectionView *)collectionView shouldShowMenuForItemAtIndexPath:(NSIndexPath *)indexPath;
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- (BOOL)collectionView:(PSTCollectionView *)collectionView canPerformAction:(SEL)action forItemAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender;
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- (void)collectionView:(PSTCollectionView *)collectionView performAction:(SEL)action forItemAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender;
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@end
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