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// Copyright 2013 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 "chrome/browser/android/most_visited_sites.h"
#include "base/android/jni_android.h"
#include "base/android/jni_array.h"
#include "base/android/jni_string.h"
#include "base/android/scoped_java_ref.h"
#include "chrome/browser/history/history_types.h"
#include "chrome/browser/history/top_sites.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/profiles/profile_android.h"
#include "content/public/browser/browser_thread.h"
#include "jni/MostVisitedSites_jni.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "ui/gfx/android/java_bitmap.h"
#include "ui/gfx/codec/jpeg_codec.h"
using base::android::AttachCurrentThread;
using base::android::ConvertUTF8ToJavaString;
using base::android::ConvertJavaStringToUTF8;
using base::android::ScopedJavaGlobalRef;
using base::android::ToJavaArrayOfStrings;
using base::android::CheckException;
using content::BrowserThread;
using history::TopSites;
namespace chrome {
namespace android {
bool RegisterMostVisitedSites(JNIEnv* env) {
return RegisterNativesImpl(env);
}
} // namespace android
} // namespace chrome
namespace {
class NativeCallback : public base::RefCounted<NativeCallback> {
public:
NativeCallback(jobject j_callback_obj, int num_results)
: num_results_(num_results) {
JNIEnv* env = AttachCurrentThread();
j_callback_obj_.Reset(env, j_callback_obj);
}
void OnMostVisitedURLsAvailable(
const history::MostVisitedURLList& visited_list) {
std::vector<string16> titles;
std::vector<std::string> urls;
ExtractMostVisitedTitlesAndURLs(visited_list, &titles, &urls);
JNIEnv* env = AttachCurrentThread();
Java_MostVisitedURLsCallback_onMostVisitedURLsAvailable(
env,
j_callback_obj_.obj(),
ToJavaArrayOfStrings(env, titles).obj(),
ToJavaArrayOfStrings(env, urls).obj());
}
private:
friend class base::RefCounted<NativeCallback>;
~NativeCallback() {}
void ExtractMostVisitedTitlesAndURLs(
const history::MostVisitedURLList& visited_list,
std::vector<string16>* titles,
std::vector<std::string>* urls) {
for (size_t i = 0; i < visited_list.size() && i < num_results_; ++i) {
const history::MostVisitedURL& visited = visited_list[i];
if (visited.url.is_empty())
break; // This is the signal that there are no more real visited sites.
titles->push_back(visited.title);
urls->push_back(visited.url.spec());
}
}
ScopedJavaGlobalRef<jobject> j_callback_obj_;
size_t num_results_;
};
SkBitmap ExtractThumbnail(const base::RefCountedMemory& image_data) {
scoped_ptr<SkBitmap> image(gfx::JPEGCodec::Decode(
image_data.front(),
image_data.size()));
return image.get() ? *image : SkBitmap();
}
void OnObtainedThumbnail(
ScopedJavaGlobalRef<jobject>* bitmap,
ScopedJavaGlobalRef<jobject>* j_callback_ref) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
JNIEnv* env = AttachCurrentThread();
Java_ThumbnailCallback_onMostVisitedURLsThumbnailAvailable(
env, j_callback_ref->obj(), bitmap->obj());
}
void GetUrlThumbnailTask(
std::string url_string,
scoped_refptr<TopSites> top_sites,
ScopedJavaGlobalRef<jobject>* j_callback_ref) {
JNIEnv* env = AttachCurrentThread();
ScopedJavaGlobalRef<jobject>* j_bitmap_ref =
new ScopedJavaGlobalRef<jobject>();
GURL gurl(url_string);
scoped_refptr<base::RefCountedMemory> data;
if (top_sites->GetPageThumbnail(gurl, &data)) {
SkBitmap thumbnail_bitmap = ExtractThumbnail(*data.get());
if (!thumbnail_bitmap.empty()) {
j_bitmap_ref->Reset(
env,
gfx::ConvertToJavaBitmap(&thumbnail_bitmap).obj());
}
}
// Since j_callback_ref is owned by this callback,
// when the callback falls out of scope it will be deleted.
// We need to pass ownership to the next callback.
ScopedJavaGlobalRef<jobject>* j_callback_ref_pass =
new ScopedJavaGlobalRef<jobject>(*j_callback_ref);
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::Bind(
&OnObtainedThumbnail,
base::Owned(j_bitmap_ref),base::Owned(j_callback_ref_pass)));
}
} // namespace
void GetMostVisitedURLs(
JNIEnv* env,
jclass clazz,
jobject j_profile,
jobject j_callback_obj,
jint num_results) {
Profile* profile = ProfileAndroid::FromProfileAndroid(j_profile);
DCHECK(profile);
if (!profile)
return;
TopSites* top_sites = profile->GetTopSites();
if (!top_sites)
return;
scoped_refptr<NativeCallback> native_callback =
new NativeCallback(j_callback_obj, static_cast<int>(num_results));
top_sites->GetMostVisitedURLs(
base::Bind(&NativeCallback::OnMostVisitedURLsAvailable,
native_callback));
}
// May be called from any thread
void GetURLThumbnail(
JNIEnv* env,
jclass clazz,
jobject j_profile,
jstring url,
jobject j_callback_obj) {
Profile* profile = ProfileAndroid::FromProfileAndroid(j_profile);
DCHECK(profile);
if (!profile)
return;
ScopedJavaGlobalRef<jobject>* j_callback_ref =
new ScopedJavaGlobalRef<jobject>();
j_callback_ref->Reset(env, j_callback_obj);
std::string url_string = ConvertJavaStringToUTF8(env, url);
scoped_refptr<TopSites> top_sites(profile->GetTopSites());
BrowserThread::PostTask(
BrowserThread::DB, FROM_HERE, base::Bind(
&GetUrlThumbnailTask,
url_string,
top_sites, base::Owned(j_callback_ref)));
}
void BlacklistUrl(JNIEnv* env, jclass clazz, jobject j_profile, jstring j_url) {
Profile* profile = ProfileAndroid::FromProfileAndroid(j_profile);
DCHECK(profile);
if (!profile)
return;
TopSites* top_sites = profile->GetTopSites();
if (!top_sites)
return;
std::string url_string = ConvertJavaStringToUTF8(env, j_url);
top_sites->AddBlacklistedURL(GURL(url_string));
}
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