components/dom_distiller/content/browser/distillable_page_utils_android.cc

   1 // Copyright 2015 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 "components/dom_distiller/content/browser/distillable_page_utils_android.h"
   6
   7 #include "base/bind.h"
   8 #include "base/message_loop/message_loop.h"
   9 #include "components/dom_distiller/content/browser/distillable_page_utils.h"
  10 #include "content/public/browser/web_contents.h"
  11 #include "jni/DistillablePageUtils_jni.h"
  12
  13 using base::android::ScopedJavaGlobalRef;
  14
  15 namespace dom_distiller {
  16 namespace android {
  17 namespace {
  18 void OnIsPageDistillableResult(
  19     scoped_ptr<ScopedJavaGlobalRef<jobject>> callback_holder,
  20     bool isDistillable) {
  21   Java_DistillablePageUtils_callOnIsPageDistillableResult(
  22       base::android::AttachCurrentThread(), callback_holder->obj(),
  23       isDistillable);
  24 }
  25 }  // namespace
  26
  27 static void IsPageDistillable(JNIEnv* env,
  28                               jclass jcaller,
  29                               jobject webContents,
  30                               jboolean is_mobile_optimized,
  31                               jobject callback) {
  32   content::WebContents* web_contents(
  33       content::WebContents::FromJavaWebContents(webContents));
  34   scoped_ptr<ScopedJavaGlobalRef<jobject>> callback_holder(
  35       new ScopedJavaGlobalRef<jobject>());
  36   callback_holder->Reset(env, callback);
  37
  38   if (!web_contents) {
  39     base::MessageLoop::current()->PostTask(
  40         FROM_HERE, base::Bind(OnIsPageDistillableResult,
  41                               base::Passed(&callback_holder), false));
  42     return;
  43   }
  44   IsDistillablePage(
  45       web_contents, is_mobile_optimized,
  46       base::Bind(OnIsPageDistillableResult, base::Passed(&callback_holder)));
  47 }
  48
  49 bool RegisterDistillablePageUtils(JNIEnv* env) {
  50   return RegisterNativesImpl(env);
  51 }
  52
  53 }
  54 }