src/chrome/browser/android/omnibox/answers_image_bridge.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/android/omnibox/answers_image_bridge.h"
   6
   7 #include <jni.h>
   8
   9 #include "base/android/jni_android.h"
  10 #include "base/android/jni_string.h"
  11 #include "base/android/scoped_java_ref.h"
  12 #include "base/bind.h"
  13 #include "chrome/browser/bitmap_fetcher/bitmap_fetcher_service.h"
  14 #include "chrome/browser/bitmap_fetcher/bitmap_fetcher_service_factory.h"
  15 #include "chrome/browser/profiles/profile.h"
  16 #include "chrome/browser/profiles/profile_android.h"
  17 #include "jni/AnswersImage_jni.h"
  18 #include "third_party/skia/include/core/SkBitmap.h"
  19 #include "ui/gfx/android/java_bitmap.h"
  20 #include "url/gurl.h"
  21
  22 using base::android::ScopedJavaLocalRef;
  23 using base::android::ConvertUTF8ToJavaString;
  24
  25 namespace {
  26
  27 class AnswersImageObserverAndroid : public BitmapFetcherService::Observer {
  28  public:
  29   explicit AnswersImageObserverAndroid(JNIEnv* env,
  30                                        jobject java_answers_image_observer) {
  31     java_answers_image_observer_.Reset(env, java_answers_image_observer);
  32   }
  33
  34   virtual ~AnswersImageObserverAndroid() {}
  35
  36   // AnswersImageObserver:
  37   virtual void OnImageChanged(BitmapFetcherService::RequestId request_id,
  38                               const SkBitmap& answers_image) override {
  39     DCHECK(!answers_image.empty());
  40
  41     JNIEnv* env = base::android::AttachCurrentThread();
  42     ScopedJavaLocalRef<jobject> java_bitmap =
  43         gfx::ConvertToJavaBitmap(&answers_image);
  44     Java_AnswersImageObserver_onAnswersImageChanged(
  45         env, java_answers_image_observer_.obj(), java_bitmap.obj());
  46   }
  47
  48  private:
  49   base::android::ScopedJavaGlobalRef<jobject> java_answers_image_observer_;
  50 };
  51
  52 }  // namespace
  53
  54 static void CancelAnswersImageRequest(JNIEnv* env,
  55                                       jclass,
  56                                       jobject java_profile,
  57                                       jint java_request_id) {
  58   Profile* profile = ProfileAndroid::FromProfileAndroid(java_profile);
  59   DCHECK(profile);
  60   BitmapFetcherService* bitmap_fetcher_service =
  61       BitmapFetcherServiceFactory::GetForBrowserContext(profile);
  62   bitmap_fetcher_service->CancelRequest(java_request_id);
  63 }
  64
  65 static int RequestAnswersImage(JNIEnv* env,
  66                                jclass,
  67                                jobject java_profile,
  68                                jstring java_url,
  69                                jobject java_callback) {
  70   Profile* profile = ProfileAndroid::FromProfileAndroid(java_profile);
  71   DCHECK(profile);
  72   BitmapFetcherService* bitmap_fetcher_service =
  73       BitmapFetcherServiceFactory::GetForBrowserContext(profile);
  74   std::string url;
  75   base::android::ConvertJavaStringToUTF8(env, java_url, &url);
  76   return bitmap_fetcher_service->RequestImage(
  77       GURL(url), new AnswersImageObserverAndroid(env, java_callback));
  78 }
  79
  80 // static
  81 bool RegisterAnswersImageBridge(JNIEnv* env) {
  82   return RegisterNativesImpl(env);
  83 }