[Android] EnhancedBookmarksBridge for bookmark description read&write.

components/enhanced_bookmarks/android/enhanced_bookmarks_bridge.cc

+// Copyright 2014 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 "components/enhanced_bookmarks/android/enhanced_bookmarks_bridge.h"
+
+#include "base/android/jni_string.h"
+#include "components/bookmarks/browser/bookmark_model.h"
+#include "components/bookmarks/browser/bookmark_utils.h"
+#include "components/bookmarks/common/android/bookmark_type.h"
+#include "components/enhanced_bookmarks/metadata_accessor.h"
+#include "jni/EnhancedBookmarksBridge_jni.h"
+
+using bookmarks::BookmarkType;
+
+namespace enhanced_bookmarks {
+namespace android {
+
+EnhancedBookmarksBridge::EnhancedBookmarksBridge(JNIEnv* env,
+                                                 jobject obj,
+                                                 jlong bookmark_model_ptr) {
+  bookmark_model_ = reinterpret_cast<BookmarkModel*>(bookmark_model_ptr);
+}
+
+void EnhancedBookmarksBridge::Destroy(JNIEnv*, jobject) {
+  delete this;
+}
+
+ScopedJavaLocalRef<jstring> EnhancedBookmarksBridge::GetBookmarkDescription(
+    JNIEnv* env, jobject obj, jlong id, jint type) {
+  DCHECK(bookmark_model_->loaded());
+  DCHECK_EQ(type, BookmarkType::NORMAL);
+
+  const BookmarkNode* node = bookmarks::GetBookmarkNodeByID(
+      bookmark_model_, static_cast<int64>(id));
+
+  return node ?
+          base::android::ConvertUTF8ToJavaString(
+              env, enhanced_bookmarks::DescriptionFromBookmark(node)) :
+          ScopedJavaLocalRef<jstring>();
+}
+
+void EnhancedBookmarksBridge::SetBookmarkDescription(JNIEnv* env,
+                                                     jobject obj,
+                                                     jlong id,
+                                                     jint type,
+                                                     jstring description) {
+  DCHECK(bookmark_model_->loaded());
+  DCHECK_EQ(type, BookmarkType::NORMAL);
+
+  const BookmarkNode* node = bookmarks::GetBookmarkNodeByID(
+      bookmark_model_, static_cast<int64>(id));
+
+  enhanced_bookmarks::SetDescriptionForBookmark(
+      bookmark_model_, node,
+      base::android::ConvertJavaStringToUTF8(env, description));
+}
+
+static jlong Init(JNIEnv* env, jobject obj, jlong bookmark_model_ptr) {
+  return reinterpret_cast<jlong>(
+      new EnhancedBookmarksBridge(env, obj, bookmark_model_ptr));
+}
+
+bool RegisterEnhancedBookmarksBridge(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
+
+}  // namespace android
+}  // namespace enhanced_bookmarks