Offline Page download bridge

chrome/browser/android/offline_pages/downloads/offline_page_download_bridge.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/offline_pages/downloads/offline_page_download_bridge.h"
+
+#include <vector>
+
+#include "base/android/jni_string.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/profiles/profile_android.h"
+#include "components/offline_pages/offline_page_item.h"
+#include "content/public/browser/browser_context.h"
+#include "jni/OfflinePageDownloadBridge_jni.h"
+#include "net/base/filename_util.h"
+
+using base::android::AttachCurrentThread;
+using base::android::ConvertJavaStringToUTF8;
+using base::android::ConvertUTF8ToJavaString;
+using base::android::ScopedJavaGlobalRef;
+using base::android::ScopedJavaLocalRef;
+
+namespace offline_pages {
+namespace android {
+
+namespace {
+
+void ToJavaOfflinePageDownloadItemList(
+    JNIEnv* env,
+    jobject j_result_obj,
+    const std::vector<OfflinePageItem>& offline_pages) {
+  for (const OfflinePageItem& offline_page : offline_pages) {
+    Java_OfflinePageDownloadBridge_createDownloadItemAndAddToList(
+        env, j_result_obj,
+        ConvertUTF8ToJavaString(env, offline_page.client_id.id).obj(),
+        ConvertUTF8ToJavaString(env, offline_page.url.spec()).obj(),
+        ConvertUTF8ToJavaString(env, offline_page.GetOfflineURL().spec()).obj(),
+        offline_page.creation_time.ToJavaTime(), offline_page.file_size);
+  }
+}
+
+ScopedJavaLocalRef<jobject> ToJavaOfflinePageDownloadItem(
+    JNIEnv* env,
+    const OfflinePageItem& offline_page) {
+  return Java_OfflinePageDownloadBridge_createDownloadItem(
+      env, ConvertUTF8ToJavaString(env, offline_page.client_id.id).obj(),
+      ConvertUTF8ToJavaString(env, offline_page.url.spec()).obj(),
+      ConvertUTF8ToJavaString(env, offline_page.GetOfflineURL().spec()).obj(),
+      offline_page.creation_time.ToJavaTime(), offline_page.file_size);
+}
+
+}  // namespace
+
+OfflinePageDownloadBridge::OfflinePageDownloadBridge(
+    JNIEnv* env,
+    const JavaParamRef<jobject>& obj,
+    content::BrowserContext* browser_context) {}
+
+OfflinePageDownloadBridge::~OfflinePageDownloadBridge() {}
+
+// static
+bool OfflinePageDownloadBridge::Register(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
+
+void OfflinePageDownloadBridge::Destroy(JNIEnv* env,
+                                        const JavaParamRef<jobject>&) {
+  delete this;
+}
+
+void OfflinePageDownloadBridge::GetAllItems(
+    JNIEnv* env,
+    const JavaParamRef<jobject>& obj,
+    const JavaParamRef<jobject>& j_result_obj) {
+  DCHECK(j_result_obj);
+
+  // Get the cached list of offline pages/download items here, and populate
+  // result object.
+  std::vector<OfflinePageItem> offline_pages;
+  ToJavaOfflinePageDownloadItemList(env, j_result_obj, offline_pages);
+}
+
+ScopedJavaLocalRef<jobject> OfflinePageDownloadBridge::GetItemByGuid(
+    JNIEnv* env,
+    const JavaParamRef<jobject>& obj,
+    const base::android::JavaParamRef<jstring>& j_guid) {
+  OfflinePageItem offline_page;
+  return ToJavaOfflinePageDownloadItem(env, offline_page);
+}
+
+void OfflinePageDownloadBridge::OnOfflinePageDownloadBridgeLoaded() {
+  JNIEnv* env = AttachCurrentThread();
+  ScopedJavaLocalRef<jobject> obj = weak_java_ref_.get(env);
+  if (obj.is_null())
+    return;
+  Java_OfflinePageDownloadBridge_downloadItemsLoaded(env, obj.obj());
+}
+
+void OfflinePageDownloadBridge::OnOfflinePageDownloadItemAdded(
+    const OfflinePageItem& item) {
+  JNIEnv* env = AttachCurrentThread();
+  ScopedJavaLocalRef<jobject> obj = weak_java_ref_.get(env);
+  if (obj.is_null())
+    return;
+  Java_OfflinePageDownloadBridge_downloadItemAdded(
+      env, obj.obj(), ToJavaOfflinePageDownloadItem(env, item).obj());
+}
+
+void OfflinePageDownloadBridge::OnOfflinePageDownloadItemDeleted(
+    const std::string& guid) {
+  JNIEnv* env = AttachCurrentThread();
+  ScopedJavaLocalRef<jobject> obj = weak_java_ref_.get(env);
+  if (obj.is_null())
+    return;
+  Java_OfflinePageDownloadBridge_downloadItemDeleted(
+      env, obj.obj(), ConvertUTF8ToJavaString(env, guid).obj());
+}
+
+void OfflinePageDownloadBridge::OnOfflinePageDownloadItemUpdated(
+    const OfflinePageItem& item) {
+  JNIEnv* env = AttachCurrentThread();
+  ScopedJavaLocalRef<jobject> obj = weak_java_ref_.get(env);
+  if (obj.is_null())
+    return;
+  Java_OfflinePageDownloadBridge_downloadItemUpdated(
+      env, obj.obj(), ToJavaOfflinePageDownloadItem(env, item).obj());
+}
+
+static jlong Init(JNIEnv* env,
+                  const JavaParamRef<jobject>& obj,
+                  const JavaParamRef<jobject>& j_profile) {
+  return reinterpret_cast<jlong>(new OfflinePageDownloadBridge(
+      env, obj, ProfileAndroid::FromProfileAndroid(j_profile)));
+}
+
+}  // namespace android
+}  // namespace offline_pages