text: // 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 "chrome/browser/ui/android/navigation_popup.h"
  
  #include "base/android/jni_string.h"
  #include "base/android/scoped_java_ref.h"
  #include "base/bind.h"
  #include "chrome/browser/browser_process.h"
  #include "chrome/browser/favicon/favicon_service.h"
  #include "chrome/browser/favicon/favicon_service_factory.h"
  #include "chrome/browser/profiles/profile.h"
  #include "chrome/browser/profiles/profile_manager.h"
  #include "chrome/common/url_constants.h"
  #include "components/history/core/browser/history_types.h"
  #include "jni/NavigationPopup_jni.h"
  #include "third_party/skia/include/core/SkBitmap.h"
  #include "ui/base/resource/resource_bundle.h"
  #include "ui/gfx/android/java_bitmap.h"
  #include "ui/gfx/image/image.h"
  #include "ui/resources/grit/ui_resources.h"
  #include "url/gurl.h"
  
  using base::android::ConvertUTF8ToJavaString;
  using base::android::ScopedJavaLocalRef;
  
  NavigationPopup::NavigationPopup(JNIEnv* env, jobject obj)
      : weak_jobject_(env, obj) {
  }
  
  NavigationPopup::~NavigationPopup() {
  }
  
  void NavigationPopup::Destroy(JNIEnv* env, jobject obj) {
    delete this;
  }
  
  void NavigationPopup::FetchFaviconForUrl(JNIEnv* env,
                                           jobject obj,
                                           jstring jurl) {
    Profile* profile = g_browser_process->profile_manager()->GetLastUsedProfile();
    FaviconService* favicon_service = FaviconServiceFactory::GetForProfile(
        profile, ServiceAccessType::EXPLICIT_ACCESS);
    if (!favicon_service)
      return;
    GURL url(base::android::ConvertJavaStringToUTF16(env, jurl));
    // TODO(tedchoc): Request higher favicons based on screen density instead of
    //                hardcoding kFaviconSize.
    favicon_service->GetFaviconImageForPageURL(
        url,
        base::Bind(&NavigationPopup::OnFaviconDataAvailable,
                   base::Unretained(this),
                   url),
        &cancelable_task_tracker_);
  }
  
  void NavigationPopup::OnFaviconDataAvailable(
      GURL navigation_entry_url,
      const favicon_base::FaviconImageResult& image_result) {
    gfx::Image image(image_result.image);
    if (image.IsEmpty()) {
      ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
      image = rb.GetImageNamed(IDR_DEFAULT_FAVICON);
    }
  
    JNIEnv* env = base::android::AttachCurrentThread();
    ScopedJavaLocalRef<jobject> obj(weak_jobject_.get(env));
    if (!obj.obj())
      return;
  
    ScopedJavaLocalRef<jstring> jurl(
        ConvertUTF8ToJavaString(env, navigation_entry_url.spec()));
  
    Java_NavigationPopup_onFaviconUpdated(
        env,
        obj.obj(),
        jurl.obj(),
        gfx::ConvertToJavaBitmap(image.ToSkBitmap()).obj());
  }
  
  static jstring GetHistoryUrl(JNIEnv* env, jclass clazz) {
    return ConvertUTF8ToJavaString(env, chrome::kChromeUIHistoryURL).Release();
  }
  
  static jlong Init(JNIEnv* env, jobject obj) {
    NavigationPopup* popup = new NavigationPopup(env, obj);
    return reinterpret_cast<intptr_t>(popup);
  }
  
  // static
  bool NavigationPopup::RegisterNavigationPopup(JNIEnv* env) {
    return RegisterNativesImpl(env);
  }
  