SDJK_iOS/SDJK/Modules/BaseModule/BaseClass/ViewController/RQBaseNavigationController.m

//
//  RQBaseNavigationController.m
//  RQCommon
//
//  Created by 张嵘 on 2018/11/13.
//  Copyright © 2018 张嵘. All rights reserved.
//

#import "RQBaseNavigationController.h"
//#import "RQBaseViewController.h"

@interface RQBaseNavigationController ()
@property (nonatomic , weak , readwrite) UIImageView * navigationBottomLine;// 导航栏分隔线
@end

@implementation RQBaseNavigationController
// 第一次使用这个类调用一次
+ (void)initialize {
	// 2.设置UINavigationBar的主题
	[self _setupNavigationBarTheme];
	
	// 3.设置UIBarButtonItem的主题
	[self _setupBarButtonItemTheme];
}

- (void)viewDidLoad {
	[super viewDidLoad];
	// 初始化
	[self _setup];
}

#pragma mark - 初始化
- (void) _setup {
	[self _setupNavigationBarBottomLine];
    
    if (@available(iOS 15.0, *)) {
        UINavigationBarAppearance *appearance = [UINavigationBarAppearance new];
        [appearance configureWithOpaqueBackground];
        /// 设置导航栏背景色
        appearance.backgroundColor = RQ_MAIN_BACKGROUNDCOLOR;
        /// 设置文字属性
        NSMutableDictionary *textAttrs = [NSMutableDictionary dictionary];
        textAttrs[NSFontAttributeName] = RQMediumFont(18.0f);
        textAttrs[NSForegroundColorAttributeName] = RQ_MAIN_TEXT_COLOR_1;
        appearance.titleTextAttributes = textAttrs;
        /// 设置导航栏下边界分割线透明
        appearance.shadowImage = [UIImage imageWithColor:UIColor.clearColor];
        self.navigationBar.standardAppearance = appearance;
        self.navigationBar.scrollEdgeAppearance = self.navigationBar.standardAppearance;
    } else {
        // Fallback on earlier versions
    }
    
}

// 查询最后一条数据
- (UIImageView *)_findHairlineImageViewUnder:(UIView *)view {
	if ([view isKindOfClass:UIImageView.class] && view.bounds.size.height <= 1.0) {
		return (UIImageView *)view;
	}
	for (UIView *subview in view.subviews){
		UIImageView *imageView = [self _findHairlineImageViewUnder:subview];
		if (imageView){
            return imageView;
        }
	}
	return nil;
}

#pragma mark - 设置导航栏的分割线
- (void)_setupNavigationBarBottomLine {
	//!!!:这里之前设置系统的 navigationBarBottomLine.image = xxx;无效 Why？ 隐藏了系统的 自己添加了一个分割线
	// 隐藏系统的导航栏分割线
	UIImageView *navigationBarBottomLine = [self _findHairlineImageViewUnder:self.navigationBar];
	navigationBarBottomLine.hidden = YES;
	// 添加自己的分割线
	CGFloat navSystemLineH = .5f;
	UIImageView *navSystemLine = [[UIImageView alloc] initWithFrame:CGRectMake(0, self.navigationBar.rq_height - navSystemLineH, RQ_SCREEN_WIDTH, navSystemLineH)];
	navSystemLine.backgroundColor = RQ_MAIN_LINE_COLOR_1;
	[self.navigationBar addSubview:navSystemLine];
	self.navigationBottomLine = navSystemLine;
}

/**
 *  设置UINavigationBarTheme的主题
 */
+ (void)_setupNavigationBarTheme {
	UINavigationBar *appearance = [UINavigationBar appearance];
	
	/// 设置背景
	//!!!: 必须设置为透明  不然布局有问题 ios8以下  会崩溃/ 如果iOS8以下  请再_setup里面 设置透明 self.navigationBar.translucent = YES;
	[appearance setTranslucent:YES]; /// 必须设置YES
	
	// 设置导航栏的样式
	[appearance setBarStyle:UIBarStyleDefault];
	//设置导航栏文字按钮的渲染色
	[appearance setTintColor:RQ_MAIN_TEXT_COLOR_1];
	// 设置导航栏的背景渲染色
	[appearance setBarTintColor:RQ_MAIN_BACKGROUNDCOLOR];
	// 设置文字属性
	NSMutableDictionary *textAttrs = [NSMutableDictionary dictionary];
	textAttrs[NSFontAttributeName] = RQMediumFont(18.0f);
	textAttrs[NSForegroundColorAttributeName] = RQ_MAIN_TEXT_COLOR_1;
	
	// UIOffsetZero是结构体, 只要包装成NSValue对象, 才能放进字典\数组中
	NSShadow *shadow = [[NSShadow alloc] init];
	shadow.shadowOffset =  CGSizeZero;
	textAttrs[NSShadowAttributeName] = shadow;
	[appearance setTitleTextAttributes:textAttrs];
	
	/// 去掉导航栏的阴影图片
	[appearance setShadowImage:[UIImage new]];
}

/**
 *  设置UIBarButtonItem的主题
 */
+ (void)_setupBarButtonItemTheme{
	// 通过appearance对象能修改整个项目中所有UIBarButtonItem的样式
	UIBarButtonItem *appearance = [UIBarButtonItem appearance];
	
	CGFloat fontSize = 16.0f;
	
	/**设置文字属性**/
	// 设置普通状态的文字属性
	NSMutableDictionary *textAttrs = [NSMutableDictionary dictionary];
	textAttrs[NSForegroundColorAttributeName] = RQ_MAIN_TEXT_COLOR_1;
	textAttrs[NSFontAttributeName] = RQRegularFont(fontSize);
	NSShadow *shadow = [[NSShadow alloc] init];
	shadow.shadowOffset =  CGSizeZero;
	textAttrs[NSShadowAttributeName] = shadow;
	[appearance setTitleTextAttributes:textAttrs forState:UIControlStateNormal];
	
	
	// 设置高亮状态的文字属性
	NSMutableDictionary *highTextAttrs = [NSMutableDictionary dictionaryWithDictionary:textAttrs];
	highTextAttrs[NSForegroundColorAttributeName] = [[UIColor whiteColor] colorWithAlphaComponent:.5f];
	[appearance setTitleTextAttributes:highTextAttrs forState:UIControlStateHighlighted];
	
	// 设置不可用状态(disable)的文字属性
	NSMutableDictionary *disableTextAttrs = [NSMutableDictionary dictionaryWithDictionary:textAttrs];
	disableTextAttrs[NSForegroundColorAttributeName] = [[UIColor whiteColor] colorWithAlphaComponent:.5f];
	[appearance setTitleTextAttributes:disableTextAttrs forState:UIControlStateDisabled];
}

#pragma mark - Publi Method
/// 显示导航栏的细线
- (void)rq_showNavigationBottomLine {
	self.navigationBottomLine.hidden = NO;
}
/// 隐藏导航栏的细线
- (void)rq_hideNavigationBottomLine {
	self.navigationBottomLine.hidden = YES;
}

/// 能拦截所有push进来的子控制器
- (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated{
	// 如果现在push的不是栈底控制器(最先push进来的那个控制器)
	if (self.viewControllers.count > 0){
		/// 隐藏底部tabbar
		viewController.hidesBottomBarWhenPushed = YES;
		
		NSString *title = @"";
		
		/// eg: [A push B]
		/// 1.取出当前的控制器的title ， 也就是取出 A.title
		/// RQ Fixed: [[self topViewController] navigationItem].title 这样来获取title 而不是[[self topViewController] title]
		title = [[self topViewController] navigationItem].title? : @"";
		
		/// 2.判断要被Push的控制器（B）是否是 RQViewController ，
		if ([viewController isKindOfClass:[RQBaseViewController class]]) {
			
			RQBaseViewModel *viewModel = [(RQBaseViewController *)viewController viewModel];
			
			/// 3. 查看backTitle 是否有值
			title = viewModel.backTitle?:title;
			
			
		}
		
		// 4.这里可以设置导航栏的左右按钮 统一管理方法
        viewController.navigationItem.leftBarButtonItem = [UIBarButtonItem rq_backItemWithTitle:@"" imageName:@"back_black" target:self action:@selector(rq_back)];
        UIBarButtonItem *negativeSpacer = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];
        if (RQ_iOS11_VERSTION_LATER) {
            negativeSpacer.width = 0;
        } else {
            negativeSpacer.width = -5;
        }
        viewController.navigationItem.leftBarButtonItems = @[negativeSpacer,viewController.navigationItem.leftBarButtonItem];
	}
    
    if ([self.viewControllers.lastObject isKindOfClass:[viewController class]]) {
        return;
    }
    
	// push
	[super pushViewController:viewController animated:animated];
}
/// 事件处理
- (void)rq_back {
	[self popViewControllerAnimated:YES];
}

#pragma mark - Override
- (BOOL)shouldAutorotate {
	return self.topViewController.shouldAutorotate;
}

- (UIInterfaceOrientationMask)supportedInterfaceOrientations{
	return self.topViewController.supportedInterfaceOrientations;
}

- (UIStatusBarStyle)preferredStatusBarStyle{
	return self.topViewController.preferredStatusBarStyle;
}

- (BOOL)prefersStatusBarHidden{
	return self.topViewController.prefersStatusBarHidden;
}

@end