Revert of Componentize TemplateURLService

chrome/browser/search_engines/search_host_to_urls_map.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 "chrome/browser/search_engines/search_host_to_urls_map.h"
+
+#include "base/memory/scoped_ptr.h"
+#include "components/search_engines/template_url.h"
+
+SearchHostToURLsMap::SearchHostToURLsMap()
+    : initialized_(false) {
+}
+
+SearchHostToURLsMap::~SearchHostToURLsMap() {
+}
+
+void SearchHostToURLsMap::Init(
+    const TemplateURLService::TemplateURLVector& template_urls,
+    const SearchTermsData& search_terms_data) {
+  DCHECK(!initialized_);
+  initialized_ = true;  // Set here so Add doesn't assert.
+  Add(template_urls, search_terms_data);
+}
+
+void SearchHostToURLsMap::Add(TemplateURL* template_url,
+                              const SearchTermsData& search_terms_data) {
+  DCHECK(initialized_);
+  DCHECK(template_url);
+
+  const GURL url(template_url->GenerateSearchURL(search_terms_data));
+  if (!url.is_valid() || !url.has_host())
+    return;
+
+  host_to_urls_map_[url.host()].insert(template_url);
+}
+
+void SearchHostToURLsMap::Remove(TemplateURL* template_url) {
+  DCHECK(initialized_);
+  DCHECK(template_url);
+
+  for (HostToURLsMap::iterator i = host_to_urls_map_.begin();
+       i != host_to_urls_map_.end(); ++i) {
+    TemplateURLSet::iterator url_set_iterator = i->second.find(template_url);
+    if (url_set_iterator != i->second.end()) {
+      i->second.erase(url_set_iterator);
+      if (i->second.empty())
+        host_to_urls_map_.erase(i);
+      // A given TemplateURL only occurs once in the map. As soon as we find the
+      // entry, stop.
+      return;
+    }
+  }
+}
+
+TemplateURL* SearchHostToURLsMap::GetTemplateURLForHost(
+    const std::string& host) {
+  DCHECK(initialized_);
+
+  HostToURLsMap::const_iterator iter = host_to_urls_map_.find(host);
+  if (iter == host_to_urls_map_.end() || iter->second.empty())
+    return NULL;
+  return *(iter->second.begin());  // Return the 1st element.
+}
+
+SearchHostToURLsMap::TemplateURLSet* SearchHostToURLsMap::GetURLsForHost(
+    const std::string& host) {
+  DCHECK(initialized_);
+
+  HostToURLsMap::iterator urls_for_host = host_to_urls_map_.find(host);
+  if (urls_for_host == host_to_urls_map_.end() || urls_for_host->second.empty())
+    return NULL;
+  return &urls_for_host->second;
+}
+
+void SearchHostToURLsMap::Add(
+    const TemplateURLService::TemplateURLVector& template_urls,
+    const SearchTermsData& search_terms_data) {
+  for (TemplateURLService::TemplateURLVector::const_iterator i(
+       template_urls.begin()); i != template_urls.end(); ++i)
+    Add(*i, search_terms_data);
+}