1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef COMPONENTS_NAVIGATION_INTERCEPTION_INTERCEPT_NAVIGATION_DELEGATE_H_ 6 #define COMPONENTS_NAVIGATION_INTERCEPTION_INTERCEPT_NAVIGATION_DELEGATE_H_ 7 8 #include "base/android/jni_weak_ref.h" 9 #include "base/memory/scoped_ptr.h" 10 #include "base/supports_user_data.h" 11 #include "content/public/common/page_transition_types.h" 12 13 class GURL; 14 15 namespace content { 16 class ResourceThrottle; 17 class WebContents; 18 } 19 20 namespace net { 21 class URLRequest; 22 } 23 24 namespace navigation_interception { 25 26 class NavigationParams; 27 28 // Native side of the InterceptNavigationDelegate Java interface. 29 // This is used to create a InterceptNavigationResourceThrottle that calls the 30 // Java interface method to determine whether a navigation should be ignored or 31 // not. 32 // To us this class: 33 // 1) the Java-side interface implementation must be associated (via the 34 // Associate method) with a WebContents for which URLRequests are to be 35 // intercepted, 36 // 2) the ResourceThrottle obtained via CreateThrottleFor must be associated 37 // with the URLRequests in the ResourceDispatcherHostDelegate 38 // implementation. 39 class InterceptNavigationDelegate : public base::SupportsUserData::Data { 40 public: 41 InterceptNavigationDelegate(JNIEnv* env, jobject jdelegate); 42 virtual ~InterceptNavigationDelegate(); 43 44 // Associates the InterceptNavigationDelegate with a WebContents using the 45 // SupportsUserData mechanism. 46 // As implied by the use of scoped_ptr, the WebContents will assume ownership 47 // of |delegate|. 48 static void Associate(content::WebContents* web_contents, 49 scoped_ptr<InterceptNavigationDelegate> delegate); 50 // Gets the InterceptNavigationDelegate associated with the WebContents, 51 // can be null. 52 static InterceptNavigationDelegate* Get(content::WebContents* web_contents); 53 54 // Creates a InterceptNavigationResourceThrottle that will direct all 55 // callbacks to the InterceptNavigationDelegate. 56 static content::ResourceThrottle* CreateThrottleFor( 57 net::URLRequest* request); 58 59 virtual bool ShouldIgnoreNavigation( 60 const NavigationParams& navigation_params); 61 private: 62 JavaObjectWeakGlobalRef weak_jdelegate_; 63 }; 64 65 bool RegisterInterceptNavigationDelegate(JNIEnv* env); 66 67 } // namespace navigation_interception 68 69 #endif // COMPONENTS_NAVIGATION_INTERCEPTION_INTERCEPT_NAVIGATION_DELEGATE_H_ 70