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45 lines
1.0 KiB
Objective-C
45 lines
1.0 KiB
Objective-C
//
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// Copyright (c) 2018 Open Whisper Systems. All rights reserved.
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//
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NS_ASSUME_NONNULL_BEGIN
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@class ConversationStyle;
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@protocol ConversationViewLayoutItem <NSObject>
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- (CGSize)cellSize;
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- (CGFloat)vSpacingWithPreviousLayoutItem:(id<ConversationViewLayoutItem>)previousLayoutItem;
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@end
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#pragma mark -
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@protocol ConversationViewLayoutDelegate <NSObject>
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- (NSArray<id<ConversationViewLayoutItem>> *)layoutItems;
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- (CGFloat)layoutHeaderHeight;
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@end
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#pragma mark -
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// A new lean and efficient layout for conversation view designed to
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// handle our edge cases (e.g. full-width unread indicators, etc.).
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@interface ConversationViewLayout : UICollectionViewLayout
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@property (nonatomic, weak) id<ConversationViewLayoutDelegate> delegate;
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@property (nonatomic, readonly) BOOL hasLayout;
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@property (nonatomic, readonly) BOOL hasEverHadLayout;
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@property (nonatomic, readonly) ConversationStyle *conversationStyle;
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- (instancetype)init NS_UNAVAILABLE;
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- (instancetype)initWithConversationStyle:(ConversationStyle *)conversationStyle;
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@end
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NS_ASSUME_NONNULL_END
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