1// Copyright (c) 2012 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/webui/omnibox/omnibox_ui_handler.h"
6
7#include <string>
8
9#include "base/auto_reset.h"
10#include "base/bind.h"
11#include "base/strings/string16.h"
12#include "base/strings/stringprintf.h"
13#include "base/strings/utf_string_conversions.h"
14#include "base/time/time.h"
15#include "base/values.h"
16#include "chrome/browser/autocomplete/autocomplete_classifier.h"
17#include "chrome/browser/autocomplete/autocomplete_controller.h"
18#include "chrome/browser/autocomplete/chrome_autocomplete_scheme_classifier.h"
19#include "chrome/browser/bookmarks/bookmark_model_factory.h"
20#include "chrome/browser/history/history_service.h"
21#include "chrome/browser/history/history_service_factory.h"
22#include "chrome/browser/search/search.h"
23#include "chrome/browser/search_engines/template_url_service_factory.h"
24#include "components/bookmarks/browser/bookmark_model.h"
25#include "components/history/core/browser/url_database.h"
26#include "components/metrics/proto/omnibox_event.pb.h"
27#include "components/omnibox/autocomplete_match.h"
28#include "components/omnibox/autocomplete_provider.h"
29#include "components/search_engines/template_url.h"
30#include "content/public/browser/web_ui.h"
31#include "mojo/common/common_type_converters.h"
32
33namespace mojo {
34
35template <>
36struct TypeConverter<mojo::Array<AutocompleteAdditionalInfoPtr>,
37                     AutocompleteMatch::AdditionalInfo> {
38  static mojo::Array<AutocompleteAdditionalInfoPtr> Convert(
39      const AutocompleteMatch::AdditionalInfo& input) {
40    mojo::Array<AutocompleteAdditionalInfoPtr> array(input.size());
41    size_t index = 0;
42    for (AutocompleteMatch::AdditionalInfo::const_iterator i = input.begin();
43         i != input.end(); ++i, index++) {
44      AutocompleteAdditionalInfoPtr item(AutocompleteAdditionalInfo::New());
45      item->key = i->first;
46      item->value = i->second;
47      array[index] = item.Pass();
48    }
49    return array.Pass();
50  }
51};
52
53template <>
54struct TypeConverter<AutocompleteMatchMojoPtr, AutocompleteMatch> {
55  static AutocompleteMatchMojoPtr Convert(const AutocompleteMatch& input) {
56    AutocompleteMatchMojoPtr result(AutocompleteMatchMojo::New());
57    if (input.provider != NULL) {
58      result->provider_name = input.provider->GetName();
59      result->provider_done = input.provider->done();
60    }
61    result->relevance = input.relevance;
62    result->deletable = input.deletable;
63    result->fill_into_edit = mojo::String::From(input.fill_into_edit);
64    result->inline_autocompletion =
65        mojo::String::From(input.inline_autocompletion);
66    result->destination_url = input.destination_url.spec();
67    result->contents = mojo::String::From(input.contents);
68    // At this time, we're not bothering to send along the long vector that
69    // represent contents classification.  i.e., for each character, what
70    // type of text it is.
71    result->description = mojo::String::From(input.description);
72    // At this time, we're not bothering to send along the long vector that
73    // represents description classification.  i.e., for each character, what
74    // type of text it is.
75    result->transition = input.transition;
76    result->is_history_what_you_typed_match =
77        input.is_history_what_you_typed_match;
78    result->allowed_to_be_default_match = input.allowed_to_be_default_match;
79    result->type = AutocompleteMatchType::ToString(input.type);
80    if (input.associated_keyword.get() != NULL) {
81      result->associated_keyword =
82          mojo::String::From(input.associated_keyword->keyword);
83    }
84    result->keyword = mojo::String::From(input.keyword);
85    result->duplicates = static_cast<int32>(input.duplicate_matches.size());
86    result->from_previous = input.from_previous;
87
88    result->additional_info =
89        mojo::Array<AutocompleteAdditionalInfoPtr>::From(input.additional_info);
90    return result.Pass();
91  }
92};
93
94template <>
95struct TypeConverter<AutocompleteResultsForProviderMojoPtr,
96                     scoped_refptr<AutocompleteProvider> > {
97  static AutocompleteResultsForProviderMojoPtr Convert(
98      const scoped_refptr<AutocompleteProvider>& input) {
99    AutocompleteResultsForProviderMojoPtr result(
100        AutocompleteResultsForProviderMojo::New());
101    result->provider_name = input->GetName();
102    result->results =
103        mojo::Array<AutocompleteMatchMojoPtr>::From(input->matches());
104    return result.Pass();
105  }
106};
107
108}  // namespace mojo
109
110OmniboxUIHandler::OmniboxUIHandler(Profile* profile)
111    : profile_(profile) {
112  ResetController();
113}
114
115OmniboxUIHandler::~OmniboxUIHandler() {}
116
117void OmniboxUIHandler::OnResultChanged(bool default_match_changed) {
118  OmniboxResultMojoPtr result(OmniboxResultMojo::New());
119  result->done = controller_->done();
120  result->time_since_omnibox_started_ms =
121      (base::Time::Now() - time_omnibox_started_).InMilliseconds();
122  const base::string16 host = input_.text().substr(
123      input_.parts().host.begin,
124      input_.parts().host.len);
125  result->host = mojo::String::From(host);
126  bool is_typed_host;
127  if (!LookupIsTypedHost(host, &is_typed_host))
128    is_typed_host = false;
129  result->is_typed_host = is_typed_host;
130
131  {
132    // Copy to an ACMatches to make conversion easier. Since this isn't
133    // performance critical we don't worry about the cost here.
134    ACMatches matches(controller_->result().begin(),
135                      controller_->result().end());
136    result->combined_results =
137        mojo::Array<AutocompleteMatchMojoPtr>::From(matches);
138  }
139  result->results_by_provider =
140      mojo::Array<AutocompleteResultsForProviderMojoPtr>::From(
141          controller_->providers());
142
143  // Fill AutocompleteMatchMojo::starred.
144  BookmarkModel* bookmark_model = BookmarkModelFactory::GetForProfile(profile_);
145  if (bookmark_model) {
146    for (size_t i =  0; i < result->combined_results.size(); ++i) {
147      result->combined_results[i]->starred = bookmark_model->IsBookmarked(
148          GURL(result->combined_results[i]->destination_url));
149    }
150    for (size_t i = 0; i < result->results_by_provider.size(); ++i) {
151      const AutocompleteResultsForProviderMojo& result_by_provider =
152          *result->results_by_provider[i];
153      for (size_t j = 0; j < result_by_provider.results.size(); ++j) {
154        result_by_provider.results[j]->starred = bookmark_model->IsBookmarked(
155            GURL(result_by_provider.results[j]->destination_url));
156      }
157    }
158  }
159
160  client()->HandleNewAutocompleteResult(result.Pass());
161}
162
163bool OmniboxUIHandler::LookupIsTypedHost(const base::string16& host,
164                                         bool* is_typed_host) const {
165  HistoryService* const history_service =
166      HistoryServiceFactory::GetForProfile(profile_,
167                                           Profile::EXPLICIT_ACCESS);
168  if (!history_service)
169    return false;
170  history::URLDatabase* url_db = history_service->InMemoryDatabase();
171  if (!url_db)
172    return false;
173  *is_typed_host = url_db->IsTypedHost(base::UTF16ToUTF8(host));
174  return true;
175}
176
177void OmniboxUIHandler::StartOmniboxQuery(const mojo::String& input_string,
178                                         int32_t cursor_position,
179                                         bool prevent_inline_autocomplete,
180                                         bool prefer_keyword,
181                                         int32_t page_classification) {
182  // Reset the controller.  If we don't do this, then the
183  // AutocompleteController might inappropriately set its |minimal_changes|
184  // variable (or something else) and some providers will short-circuit
185  // important logic and return stale results.  In short, we want the
186  // actual results to not depend on the state of the previous request.
187  ResetController();
188  time_omnibox_started_ = base::Time::Now();
189  input_ = AutocompleteInput(
190      input_string.To<base::string16>(), cursor_position, base::string16(),
191      GURL(),
192      static_cast<metrics::OmniboxEventProto::PageClassification>(
193          page_classification),
194      prevent_inline_autocomplete, prefer_keyword, true, true,
195      ChromeAutocompleteSchemeClassifier(profile_));
196  controller_->Start(input_);
197}
198
199void OmniboxUIHandler::ResetController() {
200  controller_.reset(new AutocompleteController(profile_,
201          TemplateURLServiceFactory::GetForProfile(profile_),
202          this,
203          AutocompleteClassifier::kDefaultOmniboxProviders));
204}
205