2016-11-10 16:33:01 -08:00

101 lines
3.0 KiB
Objective-C

//
// ViewController.m
// Sample
//
// Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
#import "ViewController.h"
#import <AsyncDisplayKit/AsyncDisplayKit.h>
#import "DetailViewController.h"
@interface ViewController () <ASTableDataSource, ASTableDelegate>
@property (nonatomic, copy) NSArray *imageCategories;
@property (nonatomic, strong, readonly) ASTableNode *tableNode;
@end
@implementation ViewController
#pragma mark - Lifecycle
- (instancetype)init
{
self = [super initWithNode:[ASTableNode new]];
if (self == nil) { return self; }
_imageCategories = @[@"abstract", @"animals", @"business", @"cats", @"city", @"food", @"nightlife", @"fashion", @"people", @"nature", @"sports", @"technics", @"transport"];
return self;
}
- (void)dealloc
{
self.node.delegate = nil;
self.node.dataSource = nil;
}
#pragma mark - UIViewController
- (void)viewDidLoad
{
[super viewDidLoad];
self.title = @"Image Categories";
self.node.delegate = self;
self.node.dataSource = self;
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[self.node deselectRowAtIndexPath:self.node.indexPathForSelectedRow animated:YES];
}
#pragma mark - ASTableDataSource / ASTableDelegate
- (NSInteger)tableNode:(ASTableNode *)tableNode numberOfRowsInSection:(NSInteger)section
{
return self.imageCategories.count;
}
- (ASCellNodeBlock)tableNode:(ASTableNode *)tableNode nodeBlockForRowAtIndexPath:(NSIndexPath *)indexPath
{
// As the block is executed on a background thread we need to cache the image category string outside
NSString *imageCategory = self.imageCategories[indexPath.row];
return ^{
ASTextCellNode *textCellNode = [ASTextCellNode new];
textCellNode.text = [imageCategory capitalizedString];
return textCellNode;
};
}
- (void)tableNode:(ASTableNode *)tableNode didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *imageCategory = self.imageCategories[indexPath.row];
DetailRootNode *detailRootNode = [[DetailRootNode alloc] initWithImageCategory:imageCategory];
DetailViewController *detailViewController = [[DetailViewController alloc] initWithNode:detailRootNode];
detailViewController.title = [imageCategory capitalizedString];
[self.navigationController pushViewController:detailViewController animated:YES];
}
@end