chrome/browser/ui/app_list/search/webstore_cache.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 "chrome/browser/ui/app_list/search/webstore_cache.h"
   6
   7 #include "base/values.h"
   8
   9 namespace app_list {
  10 namespace {
  11
  12 const int kWebstoreCacheMaxSize = 100;
  13 const int kWebstoreCacheTimeLimitInMinutes = 1;
  14
  15 }  // namespace
  16
  17 void WebstoreCache::CacheDeletor::operator()(WebstoreCache::Payload& payload) {
  18   delete payload.second;
  19 }
  20
  21 WebstoreCache::WebstoreCache()
  22     : cache_(kWebstoreCacheMaxSize) {
  23 }
  24
  25 WebstoreCache::~WebstoreCache() {
  26 }
  27
  28 const base::DictionaryValue* WebstoreCache::Get(const std::string& query) {
  29   Cache::iterator iter = cache_.Get(query);
  30   if (iter != cache_.end()) {
  31     if (base::Time::Now() - iter->second.first <=
  32         base::TimeDelta::FromMinutes(kWebstoreCacheTimeLimitInMinutes)) {
  33       return iter->second.second;
  34     } else {
  35       cache_.Erase(iter);
  36     }
  37   }
  38   return NULL;
  39 }
  40
  41 void WebstoreCache::Put(const std::string& query,
  42                         scoped_ptr<base::DictionaryValue> result) {
  43   if (result)
  44     cache_.Put(query, std::make_pair(base::Time::Now(), result.release()));
  45 }
  46
  47 }  // namespace app_list