chrome/browser/android/precache/precache_launcher.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/precache/precache_launcher.h"
   6
   7 #include <jni.h>
   8
   9 #include "base/android/jni_android.h"
  10 #include "base/android/jni_weak_ref.h"
  11 #include "base/bind.h"
  12 #include "base/logging.h"
  13 #include "base/prefs/pref_service.h"
  14 #include "chrome/browser/browser_process.h"
  15 #include "chrome/browser/precache/precache_manager_factory.h"
  16 #include "chrome/browser/profiles/profile.h"
  17 #include "chrome/browser/profiles/profile_manager.h"
  18 #include "components/precache/content/precache_manager.h"
  19 #include "jni/PrecacheLauncher_jni.h"
  20
  21 using base::android::AttachCurrentThread;
  22 using precache::PrecacheManager;
  23
  24 namespace {
  25
  26 // Get the profile that should be used for precaching.
  27 Profile* GetProfile() {
  28   Profile* profile = g_browser_process->profile_manager()->GetLastUsedProfile()
  29       ->GetOriginalProfile();
  30   DCHECK(profile);
  31   DCHECK(g_browser_process->profile_manager()->IsValidProfile(profile));
  32   return profile;
  33 }
  34
  35 // Get the PrecacheManager for the given |profile|.
  36 PrecacheManager* GetPrecacheManager(Profile* profile) {
  37   PrecacheManager* precache_manager =
  38       precache::PrecacheManagerFactory::GetForBrowserContext(profile);
  39   DCHECK(precache_manager);
  40   return precache_manager;
  41 }
  42
  43 }  // namespace
  44
  45 PrecacheLauncher::PrecacheLauncher(JNIEnv* env, jobject obj)
  46     : weak_java_precache_launcher_(env, obj), weak_factory_(this) {}
  47
  48 PrecacheLauncher::~PrecacheLauncher() {}
  49
  50 void PrecacheLauncher::Destroy(JNIEnv* env, jobject obj) {
  51   delete this;
  52 }
  53
  54 void PrecacheLauncher::Start(JNIEnv* env, jobject obj) {
  55   // TODO(bengr): Add integration tests for the whole feature.
  56   Profile* profile = GetProfile();
  57
  58   PrecacheManager* precache_manager = GetPrecacheManager(profile);
  59
  60   if (precache_manager == nullptr) {
  61     OnPrecacheCompleted(false);
  62     return;
  63   }
  64
  65   precache_manager->StartPrecaching(base::Bind(
  66       &PrecacheLauncher::OnPrecacheCompleted, weak_factory_.GetWeakPtr()));
  67 }
  68
  69 void PrecacheLauncher::Cancel(JNIEnv* env, jobject obj) {
  70   Profile* profile = GetProfile();
  71   PrecacheManager* precache_manager = GetPrecacheManager(profile);
  72
  73   precache_manager->CancelPrecaching();
  74 }
  75
  76 void PrecacheLauncher::OnPrecacheCompleted(bool try_again_soon) {
  77   JNIEnv* env = AttachCurrentThread();
  78   Java_PrecacheLauncher_onPrecacheCompletedCallback(
  79       env, weak_java_precache_launcher_.get(env).obj(),
  80       try_again_soon ? JNI_TRUE : JNI_FALSE);
  81 }
  82
  83 static jlong Init(JNIEnv* env, jobject obj) {
  84   return reinterpret_cast<intptr_t>(new PrecacheLauncher(env, obj));
  85 }
  86
  87 // Must be run on the UI thread.
  88 static jboolean ShouldRun(JNIEnv* env, jobject obj) {
  89   Profile* profile = GetProfile();
  90   PrecacheManager* precache_manager = GetPrecacheManager(profile);
  91   return precache_manager && (precache_manager->IsInExperimentGroup() ||
  92                               precache_manager->IsInControlGroup());
  93 }
  94
  95 bool RegisterPrecacheLauncher(JNIEnv* env) {
  96   return RegisterNativesImpl(env);
  97 }