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Merge pull request #7 from grigaci/features/collectionViewAdditions
Collection view additions
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| *.hmap | ||
| *.ipa | ||
| *.xcuserstate | ||
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| *.gcno | ||
| *.DS_Store | ||
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| # CocoaPods | ||
| # | ||
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| Original file line number | Diff line number | Diff line change |
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| // | ||
| // BIBatchHelpers.h | ||
| // BIObjCHelpers | ||
| // | ||
| // Created by Mihai Chifor on 8/31/15. | ||
| // Copyright (c) 2015 iGama Apps. All rights reserved. | ||
| // | ||
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| #import "BIScrollDetails.h" | ||
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| #import <UIKit/UIKit.h> | ||
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| /*! | ||
| @abstract Determine if batch fetching should begin based on the state of the parameters. | ||
| @param scrollDirection The current scrolling direction of the scroll view. | ||
| @param bounds The bounds of the scrollview. | ||
| @param contentSize The content size of the scrollview. | ||
| @param targetOffset The offset that the scrollview will scroll to. | ||
| @param leadingScreens How many screens in the remaining distance will trigger batch fetching. | ||
| @return Whether or not the current state should proceed with batch fetching. | ||
| @discussion This method is broken into a category for unit testing purposes and should be used with the BITableView and BICollectionView batch fetching API. | ||
| */ | ||
| extern BOOL BIDisplayShouldFetchBatch(BIScrollDirection scrollDirection, | ||
| CGRect bounds, | ||
| CGSize contentSize, | ||
| CGPoint targetOffset, | ||
| CGFloat leadingScreens); | ||
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| extern const CGFloat kBIDefaultInfiniteScrollingLeadingScreens; | ||
| extern const CGFloat kBITableFooterViewAnimationDuration; |
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| // | ||
| // BIBatchHelpers.m | ||
| // BIObjCHelpers | ||
| // | ||
| // Created by Mihai Chifor on 8/31/15. | ||
| // Copyright (c) 2015 iGama Apps. All rights reserved. | ||
| // | ||
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| #import "BIBatchHelpers.h" | ||
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| BOOL BIDisplayShouldFetchBatch(BIScrollDirection scrollDirection, | ||
| CGRect bounds, | ||
| CGSize contentSize, | ||
| CGPoint targetOffset, | ||
| CGFloat leadingScreens) { | ||
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| // only Up and Left scrolls are currently supported (tail loading) | ||
| if (scrollDirection != BIScrollDirectionLeft && scrollDirection != BIScrollDirectionUp) { | ||
| return NO; | ||
| } | ||
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| // no fetching for null states | ||
| if (leadingScreens <= 0.0 || | ||
| CGRectEqualToRect(bounds, CGRectZero)) { | ||
| return NO; | ||
| } | ||
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| CGFloat viewLength, offset, contentLength; | ||
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| if (scrollDirection == BIScrollDirectionUp) { | ||
| viewLength = bounds.size.height; | ||
| offset = targetOffset.y; | ||
| contentLength = contentSize.height; | ||
| } else { // horizontal | ||
| viewLength = bounds.size.width; | ||
| offset = targetOffset.x; | ||
| contentLength = contentSize.width; | ||
| } | ||
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| // target offset will always be 0 if the content size is smaller than the viewport | ||
| BOOL hasSmallContent = offset == 0.0 && contentLength < viewLength; | ||
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| CGFloat triggerDistance = viewLength * leadingScreens; | ||
| CGFloat remainingDistance = contentLength - viewLength - offset; | ||
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| return hasSmallContent || remainingDistance <= triggerDistance; | ||
| } | ||
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| const CGFloat kBIDefaultInfiniteScrollingLeadingScreens = .5f; | ||
| const CGFloat kBITableFooterViewAnimationDuration = .25f; |
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| // | ||
| // BIBatchRequest.h | ||
| // BIObjCHelpers | ||
| // | ||
| // Created by Bogdan Iusco on 08/09/15. | ||
| // Copyright (c) 2015 iGama Apps. All rights reserved. | ||
| // | ||
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| #import <Foundation/Foundation.h> | ||
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| FOUNDATION_EXPORT const NSInteger kDefaultBatchRequestSize; | ||
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| @class BIBatchResponse; | ||
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| typedef void(^BIBatchRequestCompletionBlock)(BIBatchResponse * __nonnull response); | ||
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| /*! | ||
| @brief Helper values for batch insert position. | ||
| */ | ||
| typedef NS_ENUM(NSUInteger, BIBatchInsertPosition) { | ||
| /*! | ||
| * @brief insert new elements at the beggining. | ||
| */ | ||
| BIBatchInsertPositionTop = 0, | ||
| /*! | ||
| * @brief insert new elements at the end. | ||
| */ | ||
| BIBatchInsertPositionBottom = UINT_MAX | ||
| }; | ||
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| /*! | ||
| * @brief Defines a set of data request values. | ||
| * Mostly used in table and collection views for inserting sets of data. | ||
| */ | ||
| @interface BIBatchRequest : NSObject | ||
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| /*! | ||
| * @brief Designated initializer for a table view batch. | ||
| * @param sectionIndex The index of the section where to fetch data. | ||
| * @param batchSize The size of the batch to fetch. | ||
| * @param completionBlock Code block to be called when fetching is done or in case of error. | ||
| */ | ||
| - (nonnull instancetype)initWithSection:(NSUInteger)sectionIndex | ||
| batchSize:(NSUInteger)batchSize | ||
| completionBlock:(nullable BIBatchRequestCompletionBlock)completionBlock NS_DESIGNATED_INITIALIZER; | ||
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| /*! | ||
| * @brief Convenience kDefaultTableViewBatchSize for a table view batch. | ||
| * @discussion Fetches kCardDefaultBatchSize elements in section index 0. | ||
| * @param completionBlock Code block to be called when fetching is done or in case of error. | ||
| */ | ||
| - (nonnull instancetype)initWithCompletionBlock:(nullable BIBatchRequestCompletionBlock)completionBlock; | ||
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| /*! | ||
| * @brief Size of the batch that is fetching. | ||
| */ | ||
| @property (nonatomic, assign, readonly) NSUInteger batchSize; | ||
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| /*! | ||
| * @brief Section index for which data is fetching. | ||
| */ | ||
| @property (nonatomic, assign, readonly) NSUInteger sectionIndex; | ||
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| /*! | ||
| * @brief Code block to be called when fetching is done or in case of error. | ||
| */ | ||
| @property (nonatomic, copy, nullable, readonly) BIBatchRequestCompletionBlock completionBlock; | ||
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| /*! | ||
| * @brief Specify an index from where to start inserting the new elements that will be fetched. | ||
| * Defaults to BIBatchInsertPositionBottom; | ||
| */ | ||
| @property (nonatomic, assign) NSUInteger insertPosition; | ||
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| @end |
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|---|---|---|
| @@ -0,0 +1,45 @@ | ||
| // | ||
| // BIBatchRequest.m | ||
| // BIObjCHelpers | ||
| // | ||
| // Created by Bogdan Iusco on 08/09/15. | ||
| // Copyright (c) 2015 iGama Apps. All rights reserved. | ||
| // | ||
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| #import "BIBatchRequest.h" | ||
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| const NSInteger kDefaultBatchRequestSize = 3; | ||
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| @interface BIBatchRequest () | ||
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| @property (nonatomic, assign, readwrite) NSUInteger batchSize; | ||
| @property (nonatomic, assign, readwrite) NSUInteger sectionIndex; | ||
| @property (nonatomic, copy, nullable, readwrite) BIBatchRequestCompletionBlock completionBlock; | ||
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| @end | ||
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| @implementation BIBatchRequest | ||
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| #pragma mark - Init methods | ||
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| - (instancetype)initWithSection:(NSUInteger)sectionIndex | ||
| batchSize:(NSUInteger)batchSize | ||
| completionBlock:(BIBatchRequestCompletionBlock)completionBlock { | ||
| self = [super init]; | ||
| if (self) { | ||
| self.sectionIndex = sectionIndex; | ||
| self.batchSize = batchSize; | ||
| self.completionBlock = completionBlock; | ||
| self.insertPosition = BIBatchInsertPositionBottom; | ||
| } | ||
| return self; | ||
| } | ||
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| - (instancetype)initWithCompletionBlock:(BIBatchRequestCompletionBlock)completionBlock { | ||
| return [self initWithSection:0 | ||
| batchSize:kDefaultBatchRequestSize | ||
| completionBlock:completionBlock]; | ||
| } | ||
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| @end |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,46 @@ | ||
| // | ||
| // BIBatchResponse.h | ||
| // BIObjCHelpers | ||
| // | ||
| // Created by Bogdan Iusco on 08/09/15. | ||
| // Copyright (c) 2015 iGama Apps. All rights reserved. | ||
| // | ||
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| #import <UIKit/UIKit.h> | ||
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| @class BIBatchRequest; | ||
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| @interface BIBatchResponse : NSObject | ||
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| + (nonnull instancetype)batchResponseForRequest:(nonnull BIBatchRequest *)batch | ||
| error:(nullable NSError *)error | ||
| newIndexPaths:(nullable NSArray *)newIndexPaths; | ||
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| - (nonnull instancetype)initWithBatchRequest:(nonnull BIBatchRequest *)batch | ||
| error:(nullable NSError *)error | ||
| newIndexPaths:(nullable NSArray *)newIndexPaths; | ||
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| - (nonnull instancetype)init NS_UNAVAILABLE; | ||
| + (nonnull instancetype)new NS_UNAVAILABLE; | ||
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| @property (nonatomic, strong, nullable, readonly) NSError *error; | ||
| @property (nonatomic, copy, nullable, readonly) NSArray *indexPaths; | ||
| @property (nonatomic, strong, nullable, readonly) BIBatchRequest *batchRequest; | ||
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| @end | ||
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| @interface BIBatchResponse (UITableView) | ||
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| - (nonnull instancetype)initWithBatchRequest:(nonnull BIBatchRequest *)batch | ||
| tableView:(nonnull UITableView *)tableView | ||
| countNewItems:(NSUInteger)countNewItems; | ||
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| @end | ||
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| @interface BIBatchResponse (UICollectionView) | ||
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| - (nonnull instancetype)initWithBatchRequest:(nonnull BIBatchRequest *)batch | ||
| collectionView:(nonnull UICollectionView *)collectionView | ||
| countNewItems:(NSUInteger)countNewItems; | ||
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| @end |
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