50 lines
2.2 KiB
Objective-C
50 lines
2.2 KiB
Objective-C
// The MIT License (MIT)
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//
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// Copyright (c) 2015-2016 forkingdog ( https://github.com/forkingdog )
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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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,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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#import <UIKit/UIKit.h>
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@interface FDIndexPathHeightCache : NSObject
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// Enable automatically if you're using index path driven height cache
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@property (nonatomic, assign) BOOL automaticallyInvalidateEnabled;
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// Height cache
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- (BOOL)existsHeightAtIndexPath:(NSIndexPath *)indexPath;
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- (void)cacheHeight:(CGFloat)height byIndexPath:(NSIndexPath *)indexPath;
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- (CGFloat)heightForIndexPath:(NSIndexPath *)indexPath;
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- (void)invalidateHeightAtIndexPath:(NSIndexPath *)indexPath;
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- (void)invalidateAllHeightCache;
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@end
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@interface UITableView (FDIndexPathHeightCache)
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/// Height cache by index path. Generally, you don't need to use it directly.
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@property (nonatomic, strong, readonly) FDIndexPathHeightCache *fd_indexPathHeightCache;
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@end
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@interface UITableView (FDIndexPathHeightCacheInvalidation)
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/// Call this method when you want to reload data but don't want to invalidate
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/// all height cache by index path, for example, load more data at the bottom of
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/// table view.
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- (void)fd_reloadDataWithoutInvalidateIndexPathHeightCache;
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@end
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