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// Copyright (c) 2012 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.
#include "components/navigation_interception/intercept_navigation_delegate.h"
#include <memory>
#include "base/android/jni_android.h"
#include "base/android/jni_string.h"
#include "base/bind.h"
#include "base/callback.h"
#include "components/navigation_interception/jni_headers/InterceptNavigationDelegate_jni.h"
#include "components/navigation_interception/navigation_params_android.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/navigation_handle.h"
#include "content/public/browser/navigation_throttle.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/web_contents.h"
#include "net/base/escape.h"
#include "url/gurl.h"
using base::android::ConvertUTF8ToJavaString;
using base::android::ScopedJavaLocalRef;
using content::BrowserThread;
using ui::PageTransition;
using content::RenderViewHost;
using content::WebContents;
namespace navigation_interception {
namespace {
const void* const kInterceptNavigationDelegateUserDataKey =
&kInterceptNavigationDelegateUserDataKey;
bool CheckIfShouldIgnoreNavigationOnUIThread(WebContents* source,
const NavigationParams& params) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
DCHECK(source);
InterceptNavigationDelegate* intercept_navigation_delegate =
InterceptNavigationDelegate::Get(source);
if (!intercept_navigation_delegate)
return false;
return intercept_navigation_delegate->ShouldIgnoreNavigation(params);
}
} // namespace
// static
void InterceptNavigationDelegate::Associate(
WebContents* web_contents,
std::unique_ptr<InterceptNavigationDelegate> delegate) {
web_contents->SetUserData(kInterceptNavigationDelegateUserDataKey,
std::move(delegate));
}
// static
InterceptNavigationDelegate* InterceptNavigationDelegate::Get(
WebContents* web_contents) {
return static_cast<InterceptNavigationDelegate*>(
web_contents->GetUserData(kInterceptNavigationDelegateUserDataKey));
}
// static
std::unique_ptr<content::NavigationThrottle>
InterceptNavigationDelegate::MaybeCreateThrottleFor(
content::NavigationHandle* handle,
navigation_interception::SynchronyMode mode) {
// Navigations in a subframe or non-primary frame tree should not be
// intercepted. As examples of a non-primary frame tree, a navigation
// occurring in a Portal element or an unactivated prerendering page should
// not launch an app.
// TODO(bokan): This is a bit of a stopgap approach since we won't run
// throttles again when the prerender is activated which means links that are
// prerendered will avoid launching an app intent that a regular navigation
// would have. Longer term we'll want prerender activation to check for app
// intents, or have this throttle cancel the prerender if an intent would
// have been launched (without launching the intent). It's also not clear
// what the right behavior for <portal> elements is.
// https://crbug.com/1227659.
if (!handle->IsInPrimaryMainFrame())
return nullptr;
return std::make_unique<InterceptNavigationThrottle>(
handle, base::BindRepeating(&CheckIfShouldIgnoreNavigationOnUIThread),
mode);
}
InterceptNavigationDelegate::InterceptNavigationDelegate(
JNIEnv* env,
jobject jdelegate,
bool escape_external_handler_value)
: weak_jdelegate_(env, jdelegate),
escape_external_handler_value_(escape_external_handler_value) {}
InterceptNavigationDelegate::~InterceptNavigationDelegate() {
}
bool InterceptNavigationDelegate::ShouldIgnoreNavigation(
const NavigationParams& navigation_params) {
NavigationParams navigation_params_to_use(navigation_params);
if (escape_external_handler_value_) {
navigation_params_to_use.url() =
GURL(net::EscapeExternalHandlerValue(navigation_params.url().spec()));
}
if (!navigation_params_to_use.url().is_valid())
return false;
JNIEnv* env = base::android::AttachCurrentThread();
ScopedJavaLocalRef<jobject> jdelegate = weak_jdelegate_.get(env);
if (jdelegate.is_null())
return false;
ScopedJavaLocalRef<jobject> jobject_params =
CreateJavaNavigationParams(env, navigation_params_to_use);
return Java_InterceptNavigationDelegate_shouldIgnoreNavigation(
env, jdelegate, jobject_params);
}
} // namespace navigation_interception
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