[TTS] Record CTR by week and 28-day intervals.

chrome/browser/android/contextualsearch/ctr_suppression.cc

+// Copyright 2016 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/contextualsearch/ctr_suppression.h>
+#include <set>
+
+#include "base/android/jni_string.h"
+#include "base/android/scoped_java_ref.h"
+#include "jni/CtrSuppression_jni.h"
+
+using base::android::AttachCurrentThread;
+using base::android::ConvertUTF8ToJavaString;
+using base::android::JavaParamRef;
+using base::android::ScopedJavaLocalRef;
+using contextual_search::CtrAggregator;
+
+CtrSuppression::CtrSuppression(JNIEnv* env, jobject obj)
+    : WeeklyActivityStorage(contextual_search::kNumWeeksNeededFor28DayData) {
+  java_object_.Reset(env, obj);
+
+  // NOTE: Creating the aggregator needs to be done after setting up the Java
+  // object because the constructor will call back through the Java object
+  // to access storage.
+  aggregator_.reset(new CtrAggregator(*this));
+  DCHECK(aggregator_);
+}
+
+CtrSuppression::~CtrSuppression() {
+  JNIEnv* env = AttachCurrentThread();
+  Java_CtrSuppression_clearNativePointer(env, java_object_.obj());
+}
+
+// Java conduit
+
+void CtrSuppression::RecordImpression(JNIEnv* env,
+                                      const JavaParamRef<jobject>& obj,
+                                      jboolean did_click) {
+  aggregator_->RecordImpression(did_click);
+}
+
+jint CtrSuppression::GetCurrentWeekNumber(JNIEnv* env,
+                                          const JavaParamRef<jobject>& obj) {
+  return aggregator_->GetCurrentWeekNumber();
+}
+
+jboolean CtrSuppression::HasPreviousWeekData(JNIEnv* env,
+                                             const JavaParamRef<jobject>& obj) {
+  return aggregator_->HasPreviousWeekData();
+}
+
+jint CtrSuppression::GetPreviousWeekImpressions(
+    JNIEnv* env,
+    const JavaParamRef<jobject>& obj) {
+  return aggregator_->GetPreviousWeekImpressions();
+}
+
+jfloat CtrSuppression::GetPreviousWeekCtr(JNIEnv* env,
+                                          const JavaParamRef<jobject>& obj) {
+  return aggregator_->GetPreviousWeekCtr();
+}
+
+jboolean CtrSuppression::HasPrevious28DayData(
+    JNIEnv* env,
+    const JavaParamRef<jobject>& obj) {
+  return aggregator_->HasPrevious28DayData();
+}
+
+jint CtrSuppression::GetPrevious28DayImpressions(
+    JNIEnv* env,
+    const JavaParamRef<jobject>& obj) {
+  return aggregator_->GetPrevious28DayImpressions();
+}
+
+jfloat CtrSuppression::GetPrevious28DayCtr(JNIEnv* env,
+                                           const JavaParamRef<jobject>& obj) {
+  return aggregator_->GetPrevious28DayCtr();
+}
+
+// WeeklyActivityStorage overrides
+
+int CtrSuppression::ReadStorage(std::string storage_bucket) {
+  JNIEnv* env = AttachCurrentThread();
+  ScopedJavaLocalRef<jstring> j_storage_bucket =
+      ConvertUTF8ToJavaString(env, storage_bucket.c_str());
+  return Java_CtrSuppression_readInt(env, java_object_, j_storage_bucket);
+}
+
+void CtrSuppression::WriteStorage(std::string storage_bucket, int value) {
+  JNIEnv* env = AttachCurrentThread();
+  ScopedJavaLocalRef<jstring> j_storage_bucket =
+      ConvertUTF8ToJavaString(env, storage_bucket.c_str());
+  Java_CtrSuppression_writeInt(env, java_object_, j_storage_bucket, value);
+}
+
+// Java wrapper boilerplate
+
+void CtrSuppression::Destroy(JNIEnv* env, const JavaParamRef<jobject>& obj) {
+  delete this;
+}
+
+bool RegisterCtrSuppression(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
+
+jlong Init(JNIEnv* env, const JavaParamRef<jobject>& obj) {
+  CtrSuppression* suppression = new CtrSuppression(env, obj);
+  return reinterpret_cast<intptr_t>(suppression);
+}