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      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 #include "components/navigation_interception/intercept_navigation_delegate.h"
      6 
      7 #include "base/android/jni_android.h"
      8 #include "base/android/jni_string.h"
      9 #include "base/callback.h"
     10 #include "components/navigation_interception/intercept_navigation_resource_throttle.h"
     11 #include "components/navigation_interception/navigation_params_android.h"
     12 #include "content/public/browser/browser_thread.h"
     13 #include "content/public/browser/render_view_host.h"
     14 #include "content/public/browser/web_contents.h"
     15 #include "jni/InterceptNavigationDelegate_jni.h"
     16 #include "net/url_request/url_request.h"
     17 #include "url/gurl.h"
     18 
     19 using base::android::ConvertUTF8ToJavaString;
     20 using base::android::ScopedJavaLocalRef;
     21 using content::BrowserThread;
     22 using content::PageTransition;
     23 using content::RenderViewHost;
     24 using content::WebContents;
     25 
     26 namespace navigation_interception {
     27 
     28 namespace {
     29 
     30 const void* kInterceptNavigationDelegateUserDataKey =
     31     &kInterceptNavigationDelegateUserDataKey;
     32 
     33 bool CheckIfShouldIgnoreNavigationOnUIThread(WebContents* source,
     34                                              const NavigationParams& params) {
     35   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
     36   DCHECK(source);
     37 
     38   InterceptNavigationDelegate* intercept_navigation_delegate =
     39       InterceptNavigationDelegate::Get(source);
     40   if (!intercept_navigation_delegate)
     41     return false;
     42 
     43   return intercept_navigation_delegate->ShouldIgnoreNavigation(params);
     44 }
     45 
     46 }  // namespace
     47 
     48 // static
     49 void InterceptNavigationDelegate::Associate(
     50     WebContents* web_contents,
     51     scoped_ptr<InterceptNavigationDelegate> delegate) {
     52   web_contents->SetUserData(kInterceptNavigationDelegateUserDataKey,
     53                             delegate.release());
     54 }
     55 
     56 // static
     57 InterceptNavigationDelegate* InterceptNavigationDelegate::Get(
     58     WebContents* web_contents) {
     59   return reinterpret_cast<InterceptNavigationDelegate*>(
     60       web_contents->GetUserData(kInterceptNavigationDelegateUserDataKey));
     61 }
     62 
     63 // static
     64 content::ResourceThrottle* InterceptNavigationDelegate::CreateThrottleFor(
     65     net::URLRequest* request) {
     66   return new InterceptNavigationResourceThrottle(
     67       request, base::Bind(&CheckIfShouldIgnoreNavigationOnUIThread));
     68 }
     69 
     70 InterceptNavigationDelegate::InterceptNavigationDelegate(
     71     JNIEnv* env, jobject jdelegate)
     72     : weak_jdelegate_(env, jdelegate) {
     73 }
     74 
     75 InterceptNavigationDelegate::~InterceptNavigationDelegate() {
     76 }
     77 
     78 bool InterceptNavigationDelegate::ShouldIgnoreNavigation(
     79     const NavigationParams& navigation_params) {
     80   if (!navigation_params.url().is_valid())
     81     return false;
     82 
     83   JNIEnv* env = base::android::AttachCurrentThread();
     84   ScopedJavaLocalRef<jobject> jdelegate = weak_jdelegate_.get(env);
     85 
     86   if (jdelegate.is_null())
     87     return false;
     88 
     89   ScopedJavaLocalRef<jobject> jobject_params =
     90       CreateJavaNavigationParams(env, navigation_params);
     91 
     92   return Java_InterceptNavigationDelegate_shouldIgnoreNavigation(
     93       env,
     94       jdelegate.obj(),
     95       jobject_params.obj());
     96 }
     97 
     98 // Register native methods.
     99 
    100 bool RegisterInterceptNavigationDelegate(JNIEnv* env) {
    101   return RegisterNativesImpl(env);
    102 }
    103 
    104 }  // namespace navigation_interception
    105