//
//  KDPWebVC.m
//  KuDianProject
//
//  Created by 学丽 on 2019/7/9.
//  Copyright © 2019 KDP. All rights reserved.
//

#import "KDPWebVC.h"

@interface KDPWebVC ()<WKUIDelegate,WKNavigationDelegate,WKScriptMessageHandler>
@property(nonatomic,strong)WKWebView *webViews;

@property(nonatomic,strong)UIButton *returnBtn;
@property(nonatomic,strong)UIButton *closeBtn;
@property(nonatomic,strong)UIButton *refreshBtn;

@property(nonatomic,strong)UIProgressView *progressBarView;

@end

@implementation KDPWebVC

- (void)viewDidLoad {
    [super viewDidLoad];
    self.view.backgroundColor=[UIColor colorWithHexString:@"#F4F4F4"];
   
    [self.navBar addleftReturnButton:self selector:@selector(returnClickBtn)];
    
    self.webViews =[[WKWebView alloc]initWithFrame:CGRectMake(0, KDNavBarHeight, SCREEN_WIDTH, SCREEN_HEIGHT-KDNavBarHeight)];
    self.webViews.backgroundColor=[UIColor colorWithHexString:@"F4F4F4"];
    self.webViews.navigationDelegate=self;
    self.webViews.UIDelegate=self;
    [ self.webViews addObserver:self forKeyPath:NSStringFromSelector(@selector(estimatedProgress)) options:0 context:nil];
    //手势触摸滑动
    self.webViews.allowsBackForwardNavigationGestures = YES;
    //自适应
    [ self.webViews sizeToFit];
    //自适应
    [ self.webViews sizeToFit];
    [self.view addSubview: self.webViews];
    self.progressBarView = [[UIProgressView alloc]initWithProgressViewStyle:UIProgressViewStyleDefault];
    self.progressBarView.frame = CGRectMake(0, KDNavBarHeight, self.view.frame.size.width, 2);
    //设置进度条的色彩
    [self.progressBarView setTrackTintColor:[UIColor colorWithRed:240.0/255 green:240.0/255 blue:240.0/255 alpha:1.0]];
    self.progressBarView.progressTintColor = [UIColor colorWithHexString:ThemeColor];
    [self.view addSubview:self.progressBarView];
    if (@available(iOS 11.0,*)) {
        self.webViews.scrollView.contentInsetAdjustmentBehavior=UIScrollViewContentInsetAdjustmentNever;
    }else{
        self.automaticallyAdjustsScrollViewInsets = NO;
    }
    
    [self loadUrl];
}
-(void)loadUrl
{
    if (self.webUrl.length>0) {
        NSURLRequest *request=[NSURLRequest requestWithURL:[NSURL URLWithString:self.webUrl]];
        [self.webViews loadRequest:request];
    }
}
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary<NSKeyValueChangeKey,id> *)change context:(void *)context{
    if ([keyPath isEqualToString:NSStringFromSelector(@selector(estimatedProgress))] && object == self.webViews ) {
        [self.progressBarView setAlpha:1.0];
        
        [self.progressBarView setProgress:self.webViews.estimatedProgress ];
        if (self.webViews.estimatedProgress >= 1.0) {
            [UIView animateWithDuration:0.7 animations:^{
                [self.progressBarView setProgress:1.0 animated:YES];
                [self.progressBarView setAlpha:0.0];
                
            }];
            
        }
    }else{
        [super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
    }
}

/**
 当网页加载完成的时候调用
 
 @param webView web描述
 @param navigation 导航的描述
 */
- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation{
    self.navigationItem.title=webView.title;
    self.navBar.navTitleLabel.text=webView.title;
    [[UIApplication sharedApplication]setNetworkActivityIndicatorVisible:NO];
    
}
- (void)webView:(WKWebView *)webView didStartProvisionalNavigation:(WKNavigation *)navigation{
    //开始加载的时候,让进度条显示
    self.progressBarView.hidden = NO;
    self.progressBarView.progress = 0;
    self.progressBarView.alpha = 1.0;
    [UIView animateWithDuration:0.8 animations:^{
        self.progressBarView.progress = 0.6;
        
    }];
}
//观察的移除
- (void)dealloc{
    [self.webViews removeObserver:self forKeyPath:NSStringFromSelector(@selector(estimatedProgress))];
}


-(void)returnClickBtn
{
    [self.navigationController popViewControllerAnimated:YES];
}


-(void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
    self.navigationController.navigationBar.hidden=YES;
    self.tabBarController.tabBar.hidden=YES;
}
-(void)viewWillDisappear:(BOOL)animated
{
    [super viewWillDisappear:animated];
    self.tabBarController.tabBar.hidden=NO;
}



@end