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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/android/preloading/android_prerender_manager.h"
#include "base/android/jni_string.h"
#include "base/check.h"
#include "base/notreached.h"
#include "chrome/browser/android/tab_android.h"
#include "chrome/browser/predictors/loading_predictor.h"
#include "chrome/browser/predictors/loading_predictor_factory.h"
#include "chrome/browser/preloading/chrome_preloading.h"
#include "chrome/browser/preloading/prerender/prerender_manager.h"
#include "chrome/browser/preloading/prerender/prerender_utils.h"
#include "chrome/browser/profiles/profile.h"
#include "content/public/browser/web_contents.h"
#include "url/gurl.h"
// Must come after other includes, because FromJniType() uses Profile.
#include "chrome/browser/ui/android/preloading/jni_headers/AndroidPrerenderManager_jni.h"
using base::android::JavaParamRef;
AndroidPrerenderManager::AndroidPrerenderManager(JNIEnv* env, jobject obj) {}
AndroidPrerenderManager::~AndroidPrerenderManager() = default;
// static
jlong JNI_AndroidPrerenderManager_Init(JNIEnv* env,
const JavaParamRef<jobject>& caller) {
return reinterpret_cast<intptr_t>(new AndroidPrerenderManager(env, caller));
}
bool AndroidPrerenderManager::StartPrerendering(
JNIEnv* env,
const GURL& prerender_url,
const base::android::JavaParamRef<jobject>& j_web_contents) {
content::WebContents* const web_contents =
content::WebContents::FromJavaWebContents(j_web_contents);
PrerenderManager::CreateForWebContents(web_contents);
auto* prerender_manager = PrerenderManager::FromWebContents(web_contents);
CHECK(prerender_manager);
base::WeakPtr<content::PrerenderHandle> prerender_handle =
prerender_manager->StartPrerenderNewTabPage(
prerender_url, chrome_preloading_predictor::kTouchOnNewTabPage);
if (prerender_handle) {
prerender_handle_map_[web_contents] = prerender_handle;
} else if (prerender_handle_map_.contains(web_contents) &&
!prerender_handle_map_[web_contents]) {
prerender_handle_map_.erase(web_contents);
}
return prerender_handle != nullptr;
}
void AndroidPrerenderManager::StopPrerendering(
JNIEnv* env,
const base::android::JavaParamRef<jobject>& j_web_contents) {
content::WebContents* const web_contents =
content::WebContents::FromJavaWebContents(j_web_contents);
if (prerender_handle_map_.contains(web_contents)) {
auto* prerender_manager = PrerenderManager::FromWebContents(web_contents);
CHECK(prerender_manager);
prerender_manager->StopPrerenderNewTabPage(
prerender_handle_map_[web_contents]);
prerender_handle_map_.erase(web_contents);
}
}
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