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(JoinString(tokenized.tokens(), ' '));
  21 }
  22
  23 }  // namespace
  24
  25 History::History(scoped_refptr<HistoryDataStore> store)
  26     : store_(store), data_loaded_(false) {
  27   const size_t kMaxQueryEntries = 1000;
  28   const size_t kMaxSecondaryQueries = 5;
  29
  30   data_.reset(
  31       new HistoryData(store_.get(), kMaxQueryEntries, kMaxSecondaryQueries));
  32   data_->AddObserver(this);
  33 }
  34
  35 History::~History() {
  36   data_->RemoveObserver(this);
  37 }
  38
  39 bool History::IsReady() const {
  40   return data_loaded_;
  41 }
  42
  43 void History::AddLaunchEvent(const std::string& query,
  44                              const std::string& result_id) {
  45   DCHECK(IsReady());
  46   data_->Add(NormalizeString(query), result_id);
  47 }
  48
  49 scoped_ptr<KnownResults> History::GetKnownResults(
  50     const std::string& query) const {
  51   DCHECK(IsReady());
  52   return data_->GetKnownResults(NormalizeString(query)).Pass();
  53 }
  54
  55 void History::OnHistoryDataLoadedFromStore() {
  56   data_loaded_ = true;
  57 }
  58
  59 }  // namespace app_list