searchbox.cc revision a1401311d1ab56c4ed0a474bd38c108f75cb0cd9 
1// Copyright 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/renderer/searchbox/searchbox.h"
6
7#include <string>
8
9#include "base/strings/string_number_conversions.h"
10#include "base/strings/string_util.h"
11#include "base/strings/utf_string_conversions.h"
12#include "chrome/common/chrome_switches.h"
13#include "chrome/common/favicon/favicon_types.h"
14#include "chrome/common/favicon/favicon_url_parser.h"
15#include "chrome/common/omnibox_focus_state.h"
16#include "chrome/common/render_messages.h"
17#include "chrome/common/url_constants.h"
18#include "chrome/renderer/searchbox/searchbox_extension.h"
19#include "content/public/renderer/render_view.h"
20#include "grit/renderer_resources.h"
21#include "net/base/escape.h"
22#include "third_party/WebKit/public/web/WebDocument.h"
23#include "third_party/WebKit/public/web/WebFrame.h"
24#include "third_party/WebKit/public/web/WebView.h"
25#include "ui/base/resource/resource_bundle.h"
26#include "url/gurl.h"
27
28namespace {
29
30// The size of the InstantMostVisitedItem cache.
31const size_t kMaxInstantMostVisitedItemCacheSize = 100;
32
33// Returns true if items stored in |old_item_id_pairs| and |new_items| are
34// equal.
35bool AreMostVisitedItemsEqual(
36    const std::vector<InstantMostVisitedItemIDPair>& old_item_id_pairs,
37    const std::vector<InstantMostVisitedItem>& new_items) {
38  if (old_item_id_pairs.size() != new_items.size())
39    return false;
40
41  for (size_t i = 0; i < new_items.size(); ++i) {
42    if (new_items[i].url != old_item_id_pairs[i].second.url ||
43        new_items[i].title != old_item_id_pairs[i].second.title) {
44      return false;
45    }
46  }
47  return true;
48}
49
50}  // namespace
51
52namespace internal {  // for testing
53
54// Parses |path| and fills in |id| with the InstantRestrictedID obtained from
55// the |path|. |render_view_id| is the ID of the associated RenderView.
56//
57// |path| is a pair of |render_view_id| and |restricted_id|, and it is
58// contained in Instant Extended URLs. A valid |path| is in the form:
59// <render_view_id>/<restricted_id>
60//
61// If the |path| is valid, returns true and fills in |id| with restricted_id
62// value. If the |path| is invalid, returns false and |id| is not set.
63bool GetInstantRestrictedIDFromPath(int render_view_id,
64                                    const std::string& path,
65                                    InstantRestrictedID* id) {
66  // Check that the path is of Most visited item ID form.
67  std::vector<std::string> tokens;
68  if (Tokenize(path, "/", &tokens) != 2)
69    return false;
70
71  int view_id = 0;
72  if (!base::StringToInt(tokens[0], &view_id) || view_id != render_view_id)
73    return false;
74  return base::StringToInt(tokens[1], id);
75}
76
77bool GetRestrictedIDFromFaviconUrl(int render_view_id,
78                                   const GURL& url,
79                                   std::string* favicon_params,
80                                   InstantRestrictedID* rid) {
81  // Strip leading slash.
82  std::string raw_path = url.path();
83  DCHECK_GT(raw_path.length(), (size_t) 0);
84  DCHECK_EQ(raw_path[0], '/');
85  raw_path = raw_path.substr(1);
86
87  chrome::ParsedFaviconPath parsed;
88  if (!chrome::ParseFaviconPath(raw_path, chrome::FAVICON, &parsed))
89    return false;
90
91  // The part of the URL which details the favicon parameters should be returned
92  // so the favicon URL can be reconstructed, by replacing the restricted_id
93  // with the actual URL from which the favicon is being requested.
94  *favicon_params = raw_path.substr(0, parsed.path_index);
95
96  // The part of the favicon URL which is supposed to contain the URL from
97  // which the favicon is being requested (i.e., the page's URL) actually
98  // contains a pair in the format "<view_id>/<restricted_id>". If the page's
99  // URL is not in the expected format then the execution must be stopped,
100  // returning |true|, indicating that the favicon URL should be translated
101  // without the page's URL part, to prevent search providers from spoofing
102  // the user's browsing history. For example, the following favicon URL
103  // "chrome-search://favicon/http://www.secretsite.com" it is not in the
104  // expected format "chrome-search://favicon/<view_id>/<restricted_id>" so
105  // the pages's URL part ("http://www.secretsite.com") should be removed
106  // entirely from the translated URL otherwise the search engine would know
107  // if the user has visited that page (by verifying whether the favicon URL
108  // returns an image for a particular page's URL); the translated URL in this
109  // case would be "chrome-search://favicon/" which would simply return the
110  // default favicon.
111  std::string id_part = raw_path.substr(parsed.path_index);
112  InstantRestrictedID id;
113  if (!GetInstantRestrictedIDFromPath(render_view_id, id_part, &id))
114    return true;
115
116  *rid = id;
117  return true;
118}
119
120// Parses a thumbnail |url| and fills in |id| with the InstantRestrictedID
121// obtained from the |url|. |render_view_id| is the ID of the associated
122// RenderView.
123//
124// Valid |url| forms:
125// chrome-search://thumb/<view_id>/<restricted_id>
126//
127// If the |url| is valid, returns true and fills in |id| with restricted_id
128// value. If the |url| is invalid, returns false and |id| is not set.
129bool GetRestrictedIDFromThumbnailUrl(int render_view_id,
130                                     const GURL& url,
131                                     InstantRestrictedID* id) {
132  // Strip leading slash.
133  std::string path = url.path();
134  DCHECK_GT(path.length(), (size_t) 0);
135  DCHECK_EQ(path[0], '/');
136  path = path.substr(1);
137
138  return GetInstantRestrictedIDFromPath(render_view_id, path, id);
139}
140
141}  // namespace internal
142
143SearchBox::SearchBox(content::RenderView* render_view)
144    : content::RenderViewObserver(render_view),
145      content::RenderViewObserverTracker<SearchBox>(render_view),
146    app_launcher_enabled_(false),
147    is_focused_(false),
148    is_input_in_progress_(false),
149    is_key_capture_enabled_(false),
150    display_instant_results_(false),
151    most_visited_items_cache_(kMaxInstantMostVisitedItemCacheSize),
152    query_(),
153    start_margin_(0) {
154}
155
156SearchBox::~SearchBox() {
157}
158
159void SearchBox::LogEvent(NTPLoggingEventType event) {
160  render_view()->Send(new ChromeViewHostMsg_LogEvent(
161      render_view()->GetRoutingID(), render_view()->GetPageId(), event));
162}
163
164void SearchBox::LogMostVisitedImpression(int position,
165                                         const base::string16& provider) {
166  render_view()->Send(new ChromeViewHostMsg_LogMostVisitedImpression(
167      render_view()->GetRoutingID(), render_view()->GetPageId(), position,
168      provider));
169}
170
171void SearchBox::LogMostVisitedNavigation(int position,
172                                         const base::string16& provider) {
173  render_view()->Send(new ChromeViewHostMsg_LogMostVisitedNavigation(
174      render_view()->GetRoutingID(), render_view()->GetPageId(), position,
175      provider));
176}
177
178void SearchBox::CheckIsUserSignedInToChromeAs(const base::string16& identity) {
179  render_view()->Send(new ChromeViewHostMsg_ChromeIdentityCheck(
180      render_view()->GetRoutingID(), render_view()->GetPageId(), identity));
181}
182
183void SearchBox::DeleteMostVisitedItem(
184    InstantRestrictedID most_visited_item_id) {
185  render_view()->Send(new ChromeViewHostMsg_SearchBoxDeleteMostVisitedItem(
186      render_view()->GetRoutingID(), render_view()->GetPageId(),
187      GetURLForMostVisitedItem(most_visited_item_id)));
188}
189
190bool SearchBox::GenerateFaviconURLFromTransientURL(const GURL& transient_url,
191                                                   GURL* url) const {
192  std::string favicon_params;
193  InstantRestrictedID rid = -1;
194  bool success = internal::GetRestrictedIDFromFaviconUrl(
195      render_view()->GetRoutingID(), transient_url, &favicon_params, &rid);
196  if (!success)
197    return false;
198
199  InstantMostVisitedItem item;
200  std::string item_url;
201  if (rid != -1 && GetMostVisitedItemWithID(rid, &item))
202    item_url = item.url.spec();
203
204  *url = GURL(base::StringPrintf("chrome-search://favicon/%s%s",
205                                 favicon_params.c_str(),
206                                 item_url.c_str()));
207  return true;
208}
209
210bool SearchBox::GenerateThumbnailURLFromTransientURL(const GURL& transient_url,
211                                                     GURL* url) const {
212  InstantRestrictedID rid = 0;
213  if (!internal::GetRestrictedIDFromThumbnailUrl(render_view()->GetRoutingID(),
214                                                 transient_url, &rid)) {
215    return false;
216  }
217
218  GURL most_visited_item_url(GetURLForMostVisitedItem(rid));
219  if (most_visited_item_url.is_empty())
220    return false;
221  *url = GURL(base::StringPrintf("chrome-search://thumb/%s",
222                                 most_visited_item_url.spec().c_str()));
223  return true;
224}
225
226void SearchBox::GetMostVisitedItems(
227    std::vector<InstantMostVisitedItemIDPair>* items) const {
228  return most_visited_items_cache_.GetCurrentItems(items);
229}
230
231bool SearchBox::GetMostVisitedItemWithID(
232    InstantRestrictedID most_visited_item_id,
233    InstantMostVisitedItem* item) const {
234  return most_visited_items_cache_.GetItemWithRestrictedID(most_visited_item_id,
235                                                           item);
236}
237
238const ThemeBackgroundInfo& SearchBox::GetThemeBackgroundInfo() {
239  return theme_info_;
240}
241
242void SearchBox::Focus() {
243  render_view()->Send(new ChromeViewHostMsg_FocusOmnibox(
244      render_view()->GetRoutingID(), render_view()->GetPageId(),
245      OMNIBOX_FOCUS_VISIBLE));
246}
247
248void SearchBox::NavigateToURL(const GURL& url,
249                              WindowOpenDisposition disposition,
250                              bool is_most_visited_item_url) {
251  render_view()->Send(new ChromeViewHostMsg_SearchBoxNavigate(
252      render_view()->GetRoutingID(), render_view()->GetPageId(), url,
253      disposition, is_most_visited_item_url));
254}
255
256void SearchBox::Paste(const base::string16& text) {
257  render_view()->Send(new ChromeViewHostMsg_PasteAndOpenDropdown(
258      render_view()->GetRoutingID(), render_view()->GetPageId(), text));
259}
260
261void SearchBox::SetVoiceSearchSupported(bool supported) {
262  render_view()->Send(new ChromeViewHostMsg_SetVoiceSearchSupported(
263      render_view()->GetRoutingID(), render_view()->GetPageId(), supported));
264}
265
266void SearchBox::StartCapturingKeyStrokes() {
267  render_view()->Send(new ChromeViewHostMsg_FocusOmnibox(
268      render_view()->GetRoutingID(), render_view()->GetPageId(),
269      OMNIBOX_FOCUS_INVISIBLE));
270}
271
272void SearchBox::StopCapturingKeyStrokes() {
273  render_view()->Send(new ChromeViewHostMsg_FocusOmnibox(
274      render_view()->GetRoutingID(), render_view()->GetPageId(),
275      OMNIBOX_FOCUS_NONE));
276}
277
278void SearchBox::UndoAllMostVisitedDeletions() {
279  render_view()->Send(
280      new ChromeViewHostMsg_SearchBoxUndoAllMostVisitedDeletions(
281      render_view()->GetRoutingID(), render_view()->GetPageId()));
282}
283
284void SearchBox::UndoMostVisitedDeletion(
285    InstantRestrictedID most_visited_item_id) {
286  render_view()->Send(new ChromeViewHostMsg_SearchBoxUndoMostVisitedDeletion(
287      render_view()->GetRoutingID(), render_view()->GetPageId(),
288      GetURLForMostVisitedItem(most_visited_item_id)));
289}
290
291bool SearchBox::OnMessageReceived(const IPC::Message& message) {
292  bool handled = true;
293  IPC_BEGIN_MESSAGE_MAP(SearchBox, message)
294    IPC_MESSAGE_HANDLER(ChromeViewMsg_ChromeIdentityCheckResult,
295                        OnChromeIdentityCheckResult)
296    IPC_MESSAGE_HANDLER(ChromeViewMsg_DetermineIfPageSupportsInstant,
297                        OnDetermineIfPageSupportsInstant)
298    IPC_MESSAGE_HANDLER(ChromeViewMsg_SearchBoxFocusChanged, OnFocusChanged)
299    IPC_MESSAGE_HANDLER(ChromeViewMsg_SearchBoxMarginChange, OnMarginChange)
300    IPC_MESSAGE_HANDLER(ChromeViewMsg_SearchBoxMostVisitedItemsChanged,
301                        OnMostVisitedChanged)
302    IPC_MESSAGE_HANDLER(ChromeViewMsg_SearchBoxPromoInformation,
303                        OnPromoInformationReceived)
304    IPC_MESSAGE_HANDLER(ChromeViewMsg_SearchBoxSetDisplayInstantResults,
305                        OnSetDisplayInstantResults)
306    IPC_MESSAGE_HANDLER(ChromeViewMsg_SearchBoxSetInputInProgress,
307                        OnSetInputInProgress)
308    IPC_MESSAGE_HANDLER(ChromeViewMsg_SearchBoxSetSuggestionToPrefetch,
309                        OnSetSuggestionToPrefetch)
310    IPC_MESSAGE_HANDLER(ChromeViewMsg_SearchBoxSubmit, OnSubmit)
311    IPC_MESSAGE_HANDLER(ChromeViewMsg_SearchBoxThemeChanged,
312                        OnThemeChanged)
313    IPC_MESSAGE_HANDLER(ChromeViewMsg_SearchBoxToggleVoiceSearch,
314                        OnToggleVoiceSearch)
315    IPC_MESSAGE_UNHANDLED(handled = false)
316  IPC_END_MESSAGE_MAP()
317  return handled;
318}
319
320void SearchBox::OnChromeIdentityCheckResult(const base::string16& identity,
321                                            bool identity_match) {
322  if (render_view()->GetWebView() && render_view()->GetWebView()->mainFrame()) {
323    extensions_v8::SearchBoxExtension::DispatchChromeIdentityCheckResult(
324        render_view()->GetWebView()->mainFrame(), identity, identity_match);
325  }
326}
327
328void SearchBox::OnDetermineIfPageSupportsInstant() {
329  if (render_view()->GetWebView() && render_view()->GetWebView()->mainFrame()) {
330    bool result = extensions_v8::SearchBoxExtension::PageSupportsInstant(
331        render_view()->GetWebView()->mainFrame());
332    DVLOG(1) << render_view() << " PageSupportsInstant: " << result;
333    render_view()->Send(new ChromeViewHostMsg_InstantSupportDetermined(
334        render_view()->GetRoutingID(), render_view()->GetPageId(), result));
335  }
336}
337
338void SearchBox::OnFocusChanged(OmniboxFocusState new_focus_state,
339                               OmniboxFocusChangeReason reason) {
340  bool key_capture_enabled = new_focus_state == OMNIBOX_FOCUS_INVISIBLE;
341  if (key_capture_enabled != is_key_capture_enabled_) {
342    // Tell the page if the key capture mode changed unless the focus state
343    // changed because of TYPING. This is because in that case, the browser
344    // hasn't really stopped capturing key strokes.
345    //
346    // (More practically, if we don't do this check, the page would receive
347    // onkeycapturechange before the corresponding onchange, and the page would
348    // have no way of telling whether the keycapturechange happened because of
349    // some actual user action or just because they started typing.)
350    if (reason != OMNIBOX_FOCUS_CHANGE_TYPING &&
351        render_view()->GetWebView() &&
352        render_view()->GetWebView()->mainFrame()) {
353      is_key_capture_enabled_ = key_capture_enabled;
354      DVLOG(1) << render_view() << " OnKeyCaptureChange";
355      extensions_v8::SearchBoxExtension::DispatchKeyCaptureChange(
356          render_view()->GetWebView()->mainFrame());
357    }
358  }
359  bool is_focused = new_focus_state == OMNIBOX_FOCUS_VISIBLE;
360  if (is_focused != is_focused_) {
361    is_focused_ = is_focused;
362    DVLOG(1) << render_view() << " OnFocusChange";
363    if (render_view()->GetWebView() &&
364        render_view()->GetWebView()->mainFrame()) {
365      extensions_v8::SearchBoxExtension::DispatchFocusChange(
366          render_view()->GetWebView()->mainFrame());
367    }
368  }
369}
370
371void SearchBox::OnMarginChange(int margin) {
372  start_margin_ = margin;
373  if (render_view()->GetWebView() && render_view()->GetWebView()->mainFrame()) {
374    extensions_v8::SearchBoxExtension::DispatchMarginChange(
375        render_view()->GetWebView()->mainFrame());
376  }
377}
378
379void SearchBox::OnMostVisitedChanged(
380    const std::vector<InstantMostVisitedItem>& items) {
381  std::vector<InstantMostVisitedItemIDPair> last_known_items;
382  GetMostVisitedItems(&last_known_items);
383
384  if (AreMostVisitedItemsEqual(last_known_items, items))
385    return;  // Do not send duplicate onmostvisitedchange events.
386
387  most_visited_items_cache_.AddItems(items);
388  if (render_view()->GetWebView() && render_view()->GetWebView()->mainFrame()) {
389    extensions_v8::SearchBoxExtension::DispatchMostVisitedChanged(
390        render_view()->GetWebView()->mainFrame());
391  }
392}
393
394void SearchBox::OnPromoInformationReceived(bool is_app_launcher_enabled) {
395  app_launcher_enabled_ = is_app_launcher_enabled;
396}
397
398void SearchBox::OnSetDisplayInstantResults(bool display_instant_results) {
399  display_instant_results_ = display_instant_results;
400}
401
402void SearchBox::OnSetInputInProgress(bool is_input_in_progress) {
403  if (is_input_in_progress_ != is_input_in_progress) {
404    is_input_in_progress_ = is_input_in_progress;
405    DVLOG(1) << render_view() << " OnSetInputInProgress";
406    if (render_view()->GetWebView() &&
407        render_view()->GetWebView()->mainFrame()) {
408      if (is_input_in_progress_) {
409        extensions_v8::SearchBoxExtension::DispatchInputStart(
410            render_view()->GetWebView()->mainFrame());
411      } else {
412        extensions_v8::SearchBoxExtension::DispatchInputCancel(
413            render_view()->GetWebView()->mainFrame());
414      }
415    }
416  }
417}
418
419void SearchBox::OnSetSuggestionToPrefetch(const InstantSuggestion& suggestion) {
420  suggestion_ = suggestion;
421  if (render_view()->GetWebView() && render_view()->GetWebView()->mainFrame()) {
422    DVLOG(1) << render_view() << " OnSetSuggestionToPrefetch";
423    extensions_v8::SearchBoxExtension::DispatchSuggestionChange(
424        render_view()->GetWebView()->mainFrame());
425  }
426}
427
428void SearchBox::OnSubmit(const base::string16& query) {
429  query_ = query;
430  if (render_view()->GetWebView() && render_view()->GetWebView()->mainFrame()) {
431    DVLOG(1) << render_view() << " OnSubmit";
432    extensions_v8::SearchBoxExtension::DispatchSubmit(
433        render_view()->GetWebView()->mainFrame());
434  }
435  if (!query.empty())
436    Reset();
437}
438
439void SearchBox::OnThemeChanged(const ThemeBackgroundInfo& theme_info) {
440  // Do not send duplicate notifications.
441  if (theme_info_ == theme_info)
442    return;
443
444  theme_info_ = theme_info;
445  if (render_view()->GetWebView() && render_view()->GetWebView()->mainFrame()) {
446    extensions_v8::SearchBoxExtension::DispatchThemeChange(
447        render_view()->GetWebView()->mainFrame());
448  }
449}
450
451void SearchBox::OnToggleVoiceSearch() {
452  if (render_view()->GetWebView() && render_view()->GetWebView()->mainFrame()) {
453    extensions_v8::SearchBoxExtension::DispatchToggleVoiceSearch(
454        render_view()->GetWebView()->mainFrame());
455  }
456}
457
458GURL SearchBox::GetURLForMostVisitedItem(InstantRestrictedID item_id) const {
459  InstantMostVisitedItem item;
460  return GetMostVisitedItemWithID(item_id, &item) ? item.url : GURL();
461}
462
463void SearchBox::Reset() {
464  query_.clear();
465  suggestion_ = InstantSuggestion();
466  start_margin_ = 0;
467  is_focused_ = false;
468  is_key_capture_enabled_ = false;
469  theme_info_ = ThemeBackgroundInfo();
470}
471