NTP tiles: Split C++ and Java MostVisitedSites classes.

chrome/browser/android/ntp/most_visited_sites_bridge.cc

+// 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/ntp/most_visited_sites_bridge.h"
+
+#include <utility>
+
+#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 "base/bind.h"
+#include "base/callback.h"
+#include "chrome/browser/profiles/profile_android.h"
+#include "jni/MostVisitedSites_jni.h"
+#include "ui/gfx/android/java_bitmap.h"
+#include "url/gurl.h"
+
+using base::android::AttachCurrentThread;
+using base::android::ConvertJavaStringToUTF8;
+using base::android::ScopedJavaGlobalRef;
+using base::android::ScopedJavaLocalRef;
+using base::android::ToJavaArrayOfStrings;
+
+namespace {
+
+void CallJavaWithBitmap(
+    std::unique_ptr<ScopedJavaGlobalRef<jobject>> j_callback,
+    bool is_local_thumbnail,
+    const SkBitmap* bitmap) {
+  JNIEnv* env = AttachCurrentThread();
+  ScopedJavaLocalRef<jobject> j_bitmap;
+  if (bitmap)
+    j_bitmap = gfx::ConvertToJavaBitmap(bitmap);
+  Java_ThumbnailCallback_onMostVisitedURLsThumbnailAvailable(
+      env, j_callback->obj(), j_bitmap.obj(), is_local_thumbnail);
+}
+
+}  // namespace
+
+class MostVisitedSitesBridge::Observer
+    : public MostVisitedSitesObserver {
+ public:
+  Observer(JNIEnv* env, const JavaParamRef<jobject>& obj);
+
+  void OnMostVisitedURLsAvailable(
+      const std::vector<base::string16>& titles,
+      const std::vector<std::string>& urls,
+      const std::vector<std::string>& whitelist_icon_paths) override;
+
+  void OnPopularURLsAvailable(
+      const std::vector<std::string>& urls,
+      const std::vector<std::string>& favicon_urls,
+      const std::vector<std::string>& large_icon_urls) override;
+
+ private:
+  ScopedJavaGlobalRef<jobject> observer_;
+
+  DISALLOW_COPY_AND_ASSIGN(Observer);
+};
+
+MostVisitedSitesBridge::Observer::Observer(
+    JNIEnv* env, const JavaParamRef<jobject>& obj)
+    : observer_(env, obj) {}
+
+void MostVisitedSitesBridge::Observer::OnMostVisitedURLsAvailable(
+    const std::vector<base::string16>& titles,
+    const std::vector<std::string>& urls,
+    const std::vector<std::string>& whitelist_icon_paths) {
+  JNIEnv* env = AttachCurrentThread();
+  DCHECK_EQ(titles.size(), urls.size());
+  DCHECK_EQ(titles.size(), whitelist_icon_paths.size());
+  Java_MostVisitedURLsObserver_onMostVisitedURLsAvailable(
+      env, observer_.obj(), ToJavaArrayOfStrings(env, titles).obj(),
+      ToJavaArrayOfStrings(env, urls).obj(),
+      ToJavaArrayOfStrings(env, whitelist_icon_paths).obj());
+}
+
+void MostVisitedSitesBridge::Observer::OnPopularURLsAvailable(
+    const std::vector<std::string>& urls,
+    const std::vector<std::string>& favicon_urls,
+    const std::vector<std::string>& large_icon_urls) {
+  JNIEnv* env = AttachCurrentThread();
+  Java_MostVisitedURLsObserver_onPopularURLsAvailable(
+      env, observer_.obj(), ToJavaArrayOfStrings(env, urls).obj(),
+      ToJavaArrayOfStrings(env, favicon_urls).obj(),
+      ToJavaArrayOfStrings(env, large_icon_urls).obj());
+}
+
+MostVisitedSitesBridge::MostVisitedSitesBridge(Profile* profile)
+    : most_visited_(profile) {}
+
+MostVisitedSitesBridge::~MostVisitedSitesBridge() {}
+
+void MostVisitedSitesBridge::Destroy(
+    JNIEnv* env, const JavaParamRef<jobject>& obj) {
+  delete this;
+}
+
+void MostVisitedSitesBridge::SetMostVisitedURLsObserver(
+    JNIEnv* env,
+    const JavaParamRef<jobject>& obj,
+    const JavaParamRef<jobject>& j_observer,
+    jint num_sites) {
+  observer_.reset(new Observer(env, j_observer));
+  most_visited_.SetMostVisitedURLsObserver(observer_.get(), num_sites);
+}
+
+void MostVisitedSitesBridge::GetURLThumbnail(
+    JNIEnv* env,
+    const JavaParamRef<jobject>& obj,
+    const JavaParamRef<jstring>& j_url,
+    const JavaParamRef<jobject>& j_callback_obj) {
+  std::unique_ptr<ScopedJavaGlobalRef<jobject>> j_callback(
+      new ScopedJavaGlobalRef<jobject>(env, j_callback_obj));
+  auto callback = base::Bind(&CallJavaWithBitmap, base::Passed(&j_callback));
+  GURL url(ConvertJavaStringToUTF8(env, j_url));
+  most_visited_.GetURLThumbnail(url, callback);
+}
+
+void MostVisitedSitesBridge::AddOrRemoveBlacklistedUrl(
+    JNIEnv* env,
+    const JavaParamRef<jobject>& obj,
+    const JavaParamRef<jstring>& j_url,
+    jboolean add_url) {
+  GURL url(ConvertJavaStringToUTF8(env, j_url));
+  most_visited_.AddOrRemoveBlacklistedUrl(url, add_url);
+}
+
+void MostVisitedSitesBridge::RecordTileTypeMetrics(
+    JNIEnv* env,
+    const JavaParamRef<jobject>& obj,
+    const JavaParamRef<jintArray>& jtile_types) {
+  std::vector<int> tile_types;
+  base::android::JavaIntArrayToIntVector(env, jtile_types, &tile_types);
+  most_visited_.RecordTileTypeMetrics(tile_types);
+}
+
+void MostVisitedSitesBridge::RecordOpenedMostVisitedItem(
+    JNIEnv* env,
+    const JavaParamRef<jobject>& obj,
+    jint index,
+    jint tile_type) {
+  most_visited_.RecordOpenedMostVisitedItem(index, tile_type);
+}
+
+// static
+bool MostVisitedSitesBridge::Register(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
+
+static jlong Init(JNIEnv* env,
+                  const JavaParamRef<jobject>& obj,
+                  const JavaParamRef<jobject>& jprofile) {
+  MostVisitedSitesBridge* most_visited_sites =
+      new MostVisitedSitesBridge(
+          ProfileAndroid::FromProfileAndroid(jprofile));
+  return reinterpret_cast<intptr_t>(most_visited_sites);
+}