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UITableView+FKLoading.m
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UITableView+FKLoading.m
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#import "UITableView+FKLoading.h"
#import "UITableViewCell+FKLoading.h"
#import "NSObject+AssociatedObjects.h"
static char allowsMultipleIndicatorsKey;
static char cellsShowingIndicatorKey;
@interface UITableView ()
@property (nonatomic, readonly) NSMutableSet *cellsShowingLoadingIndicator;
@end
@implementation UITableView (FKLoading)
- (void)showLoadingIndicatorAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [self cellForRowAtIndexPath:indexPath];
if (!self.allowsMultipleLoadingIndicators) {
[self hideLoadingIndicators];
}
[cell showLoadingIndicator];
[self.cellsShowingLoadingIndicator addObject:indexPath];
}
- (void)hideLoadingIndicatorAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [self cellForRowAtIndexPath:indexPath];
[cell hideLoadingIndicator];
[self.cellsShowingLoadingIndicator removeObject:indexPath];
}
// hides all loading indicators
- (void)hideLoadingIndicators {
for (NSIndexPath *indexPath in self.cellsShowingLoadingIndicator) {
[self hideLoadingIndicatorAtIndexPath:indexPath];
}
}
- (void)setAllowsMultipleLoadingIndicators:(BOOL)allowsMultipleLoadingIndicators {
[self associateValue:$B(allowsMultipleLoadingIndicators) withKey:&allowsMultipleIndicatorsKey];
}
- (BOOL)allowsMultipleLoadingIndicators {
return [[self associatedValueForKey:&allowsMultipleIndicatorsKey] boolValue];
}
- (NSMutableSet *)cellsShowingLoadingIndicator {
NSMutableSet *cells = (NSMutableSet *)[self associatedValueForKey:&cellsShowingIndicatorKey];
// lazy loading
if (cells == nil) {
cells = [NSMutableSet set];
[self associateValue:cells withKey:&cellsShowingIndicatorKey];
}
return cells;
}
@end