| // Copyright 2019 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #import "FLTWKNavigationDelegate.h" |
| |
| @implementation FLTWKNavigationDelegate { |
| FlutterMethodChannel* _methodChannel; |
| } |
| |
| - (instancetype)initWithChannel:(FlutterMethodChannel*)channel { |
| self = [super init]; |
| if (self) { |
| _methodChannel = channel; |
| } |
| return self; |
| } |
| |
| - (void)webView:(WKWebView*)webView |
| decidePolicyForNavigationAction:(WKNavigationAction*)navigationAction |
| decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler { |
| if (!self.hasDartNavigationDelegate) { |
| decisionHandler(WKNavigationActionPolicyAllow); |
| return; |
| } |
| NSDictionary* arguments = @{ |
| @"url" : navigationAction.request.URL.absoluteString, |
| @"isForMainFrame" : @(navigationAction.targetFrame.isMainFrame) |
| }; |
| [_methodChannel invokeMethod:@"navigationRequest" |
| arguments:arguments |
| result:^(id _Nullable result) { |
| if ([result isKindOfClass:[FlutterError class]]) { |
| NSLog(@"navigationRequest has unexpectedly completed with an error, " |
| @"allowing navigation."); |
| decisionHandler(WKNavigationActionPolicyAllow); |
| return; |
| } |
| if (result == FlutterMethodNotImplemented) { |
| NSLog(@"navigationRequest was unexepectedly not implemented: %@, " |
| @"allowing navigation.", |
| result); |
| decisionHandler(WKNavigationActionPolicyAllow); |
| return; |
| } |
| if (![result isKindOfClass:[NSNumber class]]) { |
| NSLog(@"navigationRequest unexpectedly returned a non boolean value: " |
| @"%@, allowing navigation.", |
| result); |
| decisionHandler(WKNavigationActionPolicyAllow); |
| return; |
| } |
| NSNumber* typedResult = result; |
| decisionHandler([typedResult boolValue] ? WKNavigationActionPolicyAllow |
| : WKNavigationActionPolicyCancel); |
| }]; |
| } |
| |
| - (void)webView:(WKWebView*)webView didFinishNavigation:(WKNavigation*)navigation { |
| [_methodChannel invokeMethod:@"onPageFinished" arguments:@{@"url" : webView.URL.absoluteString}]; |
| } |
| @end |
