components/search_engines/search_host_to_urls_map.cc

   1 // Copyright 2014 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 "components/search_engines/search_host_to_urls_map.h"
   6
   7 #include "base/memory/scoped_ptr.h"
   8 #include "components/search_engines/template_url.h"
   9
  10 SearchHostToURLsMap::SearchHostToURLsMap()
  11     : initialized_(false) {
  12 }
  13
  14 SearchHostToURLsMap::~SearchHostToURLsMap() {
  15 }
  16
  17 void SearchHostToURLsMap::Init(
  18     const TemplateURLService::TemplateURLVector& template_urls,
  19     const SearchTermsData& search_terms_data) {
  20   DCHECK(!initialized_);
  21   initialized_ = true;  // Set here so Add doesn't assert.
  22   Add(template_urls, search_terms_data);
  23 }
  24
  25 void SearchHostToURLsMap::Add(TemplateURL* template_url,
  26                               const SearchTermsData& search_terms_data) {
  27   DCHECK(initialized_);
  28   DCHECK(template_url);
  29
  30   const GURL url(template_url->GenerateSearchURL(search_terms_data));
  31   if (!url.is_valid() || !url.has_host())
  32     return;
  33
  34   host_to_urls_map_[url.host()].insert(template_url);
  35 }
  36
  37 void SearchHostToURLsMap::Remove(TemplateURL* template_url) {
  38   DCHECK(initialized_);
  39   DCHECK(template_url);
  40
  41   for (HostToURLsMap::iterator i = host_to_urls_map_.begin();
  42        i != host_to_urls_map_.end(); ++i) {
  43     TemplateURLSet::iterator url_set_iterator = i->second.find(template_url);
  44     if (url_set_iterator != i->second.end()) {
  45       i->second.erase(url_set_iterator);
  46       if (i->second.empty())
  47         host_to_urls_map_.erase(i);
  48       // A given TemplateURL only occurs once in the map. As soon as we find the
  49       // entry, stop.
  50       return;
  51     }
  52   }
  53 }
  54
  55 TemplateURL* SearchHostToURLsMap::GetTemplateURLForHost(
  56     const std::string& host) {
  57   DCHECK(initialized_);
  58
  59   HostToURLsMap::const_iterator iter = host_to_urls_map_.find(host);
  60   if (iter == host_to_urls_map_.end() || iter->second.empty())
  61     return NULL;
  62   return *(iter->second.begin());  // Return the 1st element.
  63 }
  64
  65 SearchHostToURLsMap::TemplateURLSet* SearchHostToURLsMap::GetURLsForHost(
  66     const std::string& host) {
  67   DCHECK(initialized_);
  68
  69   HostToURLsMap::iterator urls_for_host = host_to_urls_map_.find(host);
  70   if (urls_for_host == host_to_urls_map_.end() || urls_for_host->second.empty())
  71     return NULL;
  72   return &urls_for_host->second;
  73 }
  74
  75 void SearchHostToURLsMap::Add(
  76     const TemplateURLService::TemplateURLVector& template_urls,
  77     const SearchTermsData& search_terms_data) {
  78   for (TemplateURLService::TemplateURLVector::const_iterator i(
  79        template_urls.begin()); i != template_urls.end(); ++i)
  80     Add(*i, search_terms_data);
  81 }