WKWebView常用delegate

#pragma mark - WKNavigationDelegate
// 頁面開始加載時調用 2
- (void)webView:(WKWebView *)webView didStartProvisionalNavigation:(WKNavigation *)navigation {
    
}
// 當內容開始返回時調用 3
- (void)webView:(WKWebView *)webView didCommitNavigation:(WKNavigation *)navigation {
    
}
// 頁面加載完成之後調用 4
- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation {
    
}
// 頁面加載失敗時調用
- (void)webView:(WKWebView *)webView didFailProvisionalNavigation:(WKNavigation *)navigation {
    
}
// 接收到服務器跳轉請求之後調用
- (void)webView:(WKWebView *)webView didReceiveServerRedirectForProvisionalNavigation:(WKNavigation *)navigation {
    
}
// 在收到響應後，決定是否跳轉
- (void)webView:(WKWebView *)webView decidePolicyForNavigationResponse:(WKNavigationResponse *)navigationResponse decisionHandler:(void (^)(WKNavigationResponsePolicy))decisionHandler {
    
    NSLog(@"%@",navigationResponse.response.URL.absoluteString);
    //允許跳轉
    decisionHandler(WKNavigationResponsePolicyAllow);
    //不允許跳轉
    //decisionHandler(WKNavigationResponsePolicyCancel);
}
// 在發送請求之前，決定是否跳轉 1
- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler {
    NSString *url = navigationAction.request.URL.absoluteString;
    NSLog(@"url: %@",url);
    
    if([_interceptor isPluginUrl:url webView:webView]){
        [_interceptor filter:url webView:webView webViewController:self];
        decisionHandler(WKNavigationActionPolicyCancel);
        return;
    }
    //允許跳轉
    decisionHandler(WKNavigationActionPolicyAllow);
    //不允許跳轉
    //decisionHandler(WKNavigationActionPolicyCancel);
}

#pragma mark - WKUIDelegate
// 創建一個新的WebView
- (WKWebView *)webView:(WKWebView *)webView createWebViewWithConfiguration:(WKWebViewConfiguration *)configuration forNavigationAction:(WKNavigationAction *)navigationAction windowFeatures:(WKWindowFeatures *)windowFeatures {
    return [[WKWebView alloc]init];
}
// 輸入框
- (void)webView:(WKWebView *)webView runJavaScriptTextInputPanelWithPrompt:(NSString *)prompt defaultText:(nullable NSString *)defaultText initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(NSString * __nullable result))completionHandler {
    NSLog(@"prompt = %@",prompt);
    completionHandler(@"http");
}
// 確認框
- (void)webView:(WKWebView *)webView runJavaScriptConfirmPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(BOOL result))completionHandler {
    NSLog(@"message = %@",message);
    completionHandler(YES);
}
// 警告框
- (void)webView:(WKWebView *)webView runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(void))completionHandler {
    NSLog(@"message = %@",message);
    UIAlertController *alertController = [UIAlertController alertControllerWithTitle:message
                                                                             message:nil
                                                                      preferredStyle:UIAlertControllerStyleAlert];
    [alertController addAction:[UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) {
        completionHandler();
    }]];
    [self presentViewController:alertController animated:YES completion:nil];
}