146 lines
3.8 KiB
Objective-C
146 lines
3.8 KiB
Objective-C
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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#import "RCTTabBar.h"
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#import "RCTEventDispatcher.h"
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#import "RCTLog.h"
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#import "RCTTabBarItem.h"
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#import "RCTUtils.h"
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#import "RCTView.h"
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#import "RCTViewControllerProtocol.h"
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#import "RCTWrapperViewController.h"
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#import "UIView+React.h"
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@interface RKCustomTabBarController : UITabBarController <RCTViewControllerProtocol>
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@end
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@implementation RKCustomTabBarController
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@synthesize currentTopLayoutGuide = _currentTopLayoutGuide;
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@synthesize currentBottomLayoutGuide = _currentBottomLayoutGuide;
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- (void)viewWillLayoutSubviews
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{
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[super viewWillLayoutSubviews];
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_currentTopLayoutGuide = self.topLayoutGuide;
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_currentBottomLayoutGuide = self.bottomLayoutGuide;
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}
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@end
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@interface RCTTabBar() <UITabBarControllerDelegate>
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@end
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@implementation RCTTabBar
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{
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BOOL _tabsChanged;
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RCTEventDispatcher *_eventDispatcher;
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UITabBarController *_tabController;
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NSMutableArray *_tabViews;
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}
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- (id)initWithEventDispatcher:(RCTEventDispatcher *)eventDispatcher
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{
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if ((self = [super initWithFrame:CGRectZero])) {
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_eventDispatcher = eventDispatcher;
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_tabViews = [[NSMutableArray alloc] init];
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_tabController = [[RKCustomTabBarController alloc] init];
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_tabController.delegate = self;
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[self addSubview:_tabController.view];
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}
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return self;
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}
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- (UIViewController *)backingViewController
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{
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return _tabController;
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}
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- (void)dealloc
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{
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_tabController.delegate = nil;
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}
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- (NSArray *)reactSubviews
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{
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return _tabViews;
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}
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- (void)insertReactSubview:(UIView *)view atIndex:(NSInteger)atIndex
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{
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if (![view isKindOfClass:[RCTTabBarItem class]]) {
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RCTLogError(@"subview should be of type RCTTabBarItem");
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return;
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}
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[_tabViews insertObject:view atIndex:atIndex];
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_tabsChanged = YES;
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}
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- (void)removeReactSubview:(UIView *)subview
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{
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if (_tabViews.count == 0) {
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RCTLogError(@"should have at least one view to remove a subview");
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return;
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}
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[_tabViews removeObject:subview];
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_tabsChanged = YES;
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}
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- (void)layoutSubviews
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{
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[super layoutSubviews];
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_tabController.view.frame = self.bounds;
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}
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- (void)reactBridgeDidFinishTransaction
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{
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// we can't hook up the VC hierarchy in 'init' because the subviews aren't
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// hooked up yet, so we do it on demand here whenever a transaction has finished
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[self addControllerToClosestParent:_tabController];
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if (_tabsChanged) {
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NSMutableArray *viewControllers = [NSMutableArray array];
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for (RCTTabBarItem *tab in [self reactSubviews]) {
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UIViewController *controller = tab.backingViewController;
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if (!controller) {
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controller = [[RCTWrapperViewController alloc] initWithContentView:tab
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eventDispatcher:_eventDispatcher];
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}
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[viewControllers addObject:controller];
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}
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_tabController.viewControllers = viewControllers;
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_tabsChanged = NO;
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}
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[[self reactSubviews] enumerateObjectsUsingBlock:^(RCTTabBarItem *tab, NSUInteger index, BOOL *stop) {
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UIViewController *controller = _tabController.viewControllers[index];
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controller.tabBarItem = tab.barItem;
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if (tab.selected) {
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_tabController.selectedViewController = controller;
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}
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}];
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}
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#pragma mark - UITabBarControllerDelegate
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- (BOOL)tabBarController:(UITabBarController *)tabBarController shouldSelectViewController:(UIViewController *)viewController
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{
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NSUInteger index = [tabBarController.viewControllers indexOfObject:viewController];
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RCTTabBarItem *tab = [self reactSubviews][index];
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[_eventDispatcher sendInputEventWithName:@"topTap" body:@{@"target": tab.reactTag}];
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return NO;
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}
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@end
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