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// // FLEXClassesTableViewController.m // Flipboard // // Created by Ryan Olson on 2014-05-03. // Copyright (c) 2014 Flipboard. All rights reserved. //
#import "FLEXClassesTableViewController.h" #import "FLEXObjectExplorerViewController.h" #import "FLEXObjectExplorerFactory.h" #import "FLEXUtility.h" #import <objc/runtime.h>
@interface FLEXClassesTableViewController () <UISearchBarDelegate>
@property (nonatomic, strong) NSArray<NSString *> *classNames; @property (nonatomic, strong) NSArray<NSString *> *filteredClassNames; @property (nonatomic, strong) UISearchBar *searchBar;
@end
@implementation FLEXClassesTableViewController
- (void)viewDidLoad { [super viewDidLoad]; self.searchBar = [[UISearchBar alloc] init]; self.searchBar.placeholder = [FLEXUtility searchBarPlaceholderText]; self.searchBar.delegate = self; [self.searchBar sizeToFit]; self.tableView.tableHeaderView = self.searchBar; }
- (void)setBinaryImageName:(NSString *)binaryImageName { if (![_binaryImageName isEqual:binaryImageName]) { _binaryImageName = binaryImageName; [self loadClassNames]; [self updateTitle]; } }
- (void)setClassNames:(NSArray<NSString *> *)classNames { _classNames = classNames; self.filteredClassNames = classNames; }
- (void)loadClassNames { unsigned int classNamesCount = 0; const char **classNames = objc_copyClassNamesForImage([self.binaryImageName UTF8String], &classNamesCount); if (classNames) { NSMutableArray<NSString *> *classNameStrings = [NSMutableArray array]; for (unsigned int i = 0; i < classNamesCount; i++) { const char *className = classNames[i]; NSString *classNameString = [NSString stringWithUTF8String:className]; [classNameStrings addObject:classNameString]; } self.classNames = [classNameStrings sortedArrayUsingSelector:@selector(caseInsensitiveCompare:)]; free(classNames); } }
- (void)updateTitle { NSString *shortImageName = self.binaryImageName.lastPathComponent; self.title = [NSString stringWithFormat:@"%@ Classes (%lu)", shortImageName, (unsigned long)[self.filteredClassNames count]]; }
#pragma mark - Search
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText { if ([searchText length] > 0) { NSPredicate *searchPreidcate = [NSPredicate predicateWithFormat:@"SELF CONTAINS[cd] %@", searchText]; self.filteredClassNames = [self.classNames filteredArrayUsingPredicate:searchPreidcate]; } else { self.filteredClassNames = self.classNames; } [self updateTitle]; [self.tableView reloadData]; }
- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar { [searchBar resignFirstResponder]; }
- (void)scrollViewDidScroll:(UIScrollView *)scrollView { // Dismiss the keyboard when interacting with filtered results. [self.searchBar endEditing:YES]; }
#pragma mark - Table View Data Source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { return 1; }
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { return [self.filteredClassNames count]; }
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"Cell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (!cell) { cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier]; cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator; cell.textLabel.font = [FLEXUtility defaultTableViewCellLabelFont]; } cell.textLabel.text = self.filteredClassNames[indexPath.row]; return cell; }
#pragma mark - Table View Delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { NSString *className = self.filteredClassNames[indexPath.row]; Class selectedClass = objc_getClass([className UTF8String]); FLEXObjectExplorerViewController *objectExplorer = [FLEXObjectExplorerFactory explorerViewControllerForObject:selectedClass]; [self.navigationController pushViewController:objectExplorer animated:YES]; }
@end
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