ui/app_list/search/history.cc

   1 // Copyright 2013 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 "ui/app_list/search/history.h"
   6
   7 #include "base/strings/string_util.h"
   8 #include "base/strings/utf_string_conversions.h"
   9 #include "ui/app_list/search/history_data.h"
  10 #include "ui/app_list/search/history_data_store.h"
  11 #include "ui/app_list/search/tokenized_string.h"
  12
  13 namespace app_list {
  14
  15 namespace {
  16
  17 // Normalize the given string by joining all its tokens with a space.
  18 std::string NormalizeString(const std::string& utf8) {
  19   TokenizedString tokenized(base::UTF8ToUTF16(utf8));
  20   return base::UTF16ToUTF8(
  21       base::JoinString(tokenized.tokens(), base::ASCIIToUTF16(" ")));
  22 }
  23
  24 }  // namespace
  25
  26 History::History(scoped_refptr<HistoryDataStore> store)
  27     : store_(store), data_loaded_(false) {
  28   const size_t kMaxQueryEntries = 1000;
  29   const size_t kMaxSecondaryQueries = 5;
  30
  31   data_.reset(
  32       new HistoryData(store_.get(), kMaxQueryEntries, kMaxSecondaryQueries));
  33   data_->AddObserver(this);
  34 }
  35
  36 History::~History() {
  37   data_->RemoveObserver(this);
  38 }
  39
  40 bool History::IsReady() const {
  41   return data_loaded_;
  42 }
  43
  44 void History::AddLaunchEvent(const std::string& query,
  45                              const std::string& result_id) {
  46   DCHECK(IsReady());
  47   data_->Add(NormalizeString(query), result_id);
  48 }
  49
  50 scoped_ptr<KnownResults> History::GetKnownResults(
  51     const std::string& query) const {
  52   DCHECK(IsReady());
  53   return data_->GetKnownResults(NormalizeString(query)).Pass();
  54 }
  55
  56 void History::OnHistoryDataLoadedFromStore() {
  57   data_loaded_ = true;
  58 }
  59
  60 }  // namespace app_list