autofill_agent.cc revision cedac228d2dd51db4b79ea1e72c7f249408ee061 
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 "components/autofill/content/renderer/autofill_agent.h"
6
7#include "base/bind.h"
8#include "base/command_line.h"
9#include "base/message_loop/message_loop.h"
10#include "base/strings/string_split.h"
11#include "base/strings/string_util.h"
12#include "base/strings/utf_string_conversions.h"
13#include "base/time/time.h"
14#include "components/autofill/content/common/autofill_messages.h"
15#include "components/autofill/content/renderer/form_autofill_util.h"
16#include "components/autofill/content/renderer/page_click_tracker.h"
17#include "components/autofill/content/renderer/password_autofill_agent.h"
18#include "components/autofill/content/renderer/password_generation_agent.h"
19#include "components/autofill/core/common/autofill_constants.h"
20#include "components/autofill/core/common/autofill_data_validation.h"
21#include "components/autofill/core/common/autofill_switches.h"
22#include "components/autofill/core/common/form_data.h"
23#include "components/autofill/core/common/form_data_predictions.h"
24#include "components/autofill/core/common/form_field_data.h"
25#include "components/autofill/core/common/password_form.h"
26#include "components/autofill/core/common/web_element_descriptor.h"
27#include "content/public/common/content_switches.h"
28#include "content/public/common/ssl_status.h"
29#include "content/public/common/url_constants.h"
30#include "content/public/renderer/render_view.h"
31#include "grit/components_strings.h"
32#include "net/cert/cert_status_flags.h"
33#include "third_party/WebKit/public/platform/WebRect.h"
34#include "third_party/WebKit/public/platform/WebURLRequest.h"
35#include "third_party/WebKit/public/web/WebConsoleMessage.h"
36#include "third_party/WebKit/public/web/WebDataSource.h"
37#include "third_party/WebKit/public/web/WebDocument.h"
38#include "third_party/WebKit/public/web/WebElementCollection.h"
39#include "third_party/WebKit/public/web/WebFormControlElement.h"
40#include "third_party/WebKit/public/web/WebFormElement.h"
41#include "third_party/WebKit/public/web/WebInputEvent.h"
42#include "third_party/WebKit/public/web/WebLocalFrame.h"
43#include "third_party/WebKit/public/web/WebNode.h"
44#include "third_party/WebKit/public/web/WebOptionElement.h"
45#include "third_party/WebKit/public/web/WebTextAreaElement.h"
46#include "third_party/WebKit/public/web/WebView.h"
47#include "ui/base/l10n/l10n_util.h"
48#include "ui/events/keycodes/keyboard_codes.h"
49
50using blink::WebAutofillClient;
51using blink::WebConsoleMessage;
52using blink::WebElement;
53using blink::WebElementCollection;
54using blink::WebFormControlElement;
55using blink::WebFormElement;
56using blink::WebFrame;
57using blink::WebInputElement;
58using blink::WebKeyboardEvent;
59using blink::WebLocalFrame;
60using blink::WebNode;
61using blink::WebOptionElement;
62using blink::WebString;
63using blink::WebTextAreaElement;
64using blink::WebVector;
65
66namespace autofill {
67
68namespace {
69
70// Gets all the data list values (with corresponding label) for the given
71// element.
72void GetDataListSuggestions(const WebInputElement& element,
73                            bool ignore_current_value,
74                            std::vector<base::string16>* values,
75                            std::vector<base::string16>* labels) {
76  WebElementCollection options = element.dataListOptions();
77  if (options.isNull())
78    return;
79
80  base::string16 prefix;
81  if (!ignore_current_value) {
82    prefix = element.editingValue();
83    if (element.isMultiple() &&
84        element.formControlType() == WebString::fromUTF8("email")) {
85      std::vector<base::string16> parts;
86      base::SplitStringDontTrim(prefix, ',', &parts);
87      if (parts.size() > 0) {
88        base::TrimWhitespace(parts[parts.size() - 1], base::TRIM_LEADING,
89                             &prefix);
90      }
91    }
92  }
93  for (WebOptionElement option = options.firstItem().to<WebOptionElement>();
94       !option.isNull(); option = options.nextItem().to<WebOptionElement>()) {
95    if (!StartsWith(option.value(), prefix, false) ||
96        option.value() == prefix ||
97        !element.isValidValue(option.value()))
98      continue;
99
100    values->push_back(option.value());
101    if (option.value() != option.label())
102      labels->push_back(option.label());
103    else
104      labels->push_back(base::string16());
105  }
106}
107
108// Trim the vector before sending it to the browser process to ensure we
109// don't send too much data through the IPC.
110void TrimStringVectorForIPC(std::vector<base::string16>* strings) {
111  // Limit the size of the vector.
112  if (strings->size() > kMaxListSize)
113    strings->resize(kMaxListSize);
114
115  // Limit the size of the strings in the vector.
116  for (size_t i = 0; i < strings->size(); ++i) {
117    if ((*strings)[i].length() > kMaxDataLength)
118      (*strings)[i].resize(kMaxDataLength);
119  }
120}
121
122}  // namespace
123
124AutofillAgent::AutofillAgent(content::RenderView* render_view,
125                             PasswordAutofillAgent* password_autofill_agent,
126                             PasswordGenerationAgent* password_generation_agent)
127    : content::RenderViewObserver(render_view),
128      password_autofill_agent_(password_autofill_agent),
129      password_generation_agent_(password_generation_agent),
130      autofill_query_id_(0),
131      web_view_(render_view->GetWebView()),
132      display_warning_if_disabled_(false),
133      was_query_node_autofilled_(false),
134      has_shown_autofill_popup_for_current_edit_(false),
135      did_set_node_text_(false),
136      has_new_forms_for_browser_(false),
137      ignore_text_changes_(false),
138      is_popup_possibly_visible_(false),
139      main_frame_processed_(false),
140      weak_ptr_factory_(this) {
141  render_view->GetWebView()->setAutofillClient(this);
142
143  // The PageClickTracker is a RenderViewObserver, and hence will be freed when
144  // the RenderView is destroyed.
145  new PageClickTracker(render_view, this);
146}
147
148AutofillAgent::~AutofillAgent() {}
149
150bool AutofillAgent::OnMessageReceived(const IPC::Message& message) {
151  bool handled = true;
152  IPC_BEGIN_MESSAGE_MAP(AutofillAgent, message)
153    IPC_MESSAGE_HANDLER(AutofillMsg_FillForm, OnFillForm)
154    IPC_MESSAGE_HANDLER(AutofillMsg_PreviewForm, OnPreviewForm)
155    IPC_MESSAGE_HANDLER(AutofillMsg_FieldTypePredictionsAvailable,
156                        OnFieldTypePredictionsAvailable)
157    IPC_MESSAGE_HANDLER(AutofillMsg_ClearForm, OnClearForm)
158    IPC_MESSAGE_HANDLER(AutofillMsg_ClearPreviewedForm, OnClearPreviewedForm)
159    IPC_MESSAGE_HANDLER(AutofillMsg_FillFieldWithValue, OnFillFieldWithValue)
160    IPC_MESSAGE_HANDLER(AutofillMsg_PreviewFieldWithValue,
161                        OnPreviewFieldWithValue)
162    IPC_MESSAGE_HANDLER(AutofillMsg_AcceptDataListSuggestion,
163                        OnAcceptDataListSuggestion)
164    IPC_MESSAGE_HANDLER(AutofillMsg_FillPasswordSuggestion,
165                        OnFillPasswordSuggestion)
166    IPC_MESSAGE_HANDLER(AutofillMsg_PreviewPasswordSuggestion,
167                        OnPreviewPasswordSuggestion)
168    IPC_MESSAGE_HANDLER(AutofillMsg_RequestAutocompleteResult,
169                        OnRequestAutocompleteResult)
170    IPC_MESSAGE_UNHANDLED(handled = false)
171  IPC_END_MESSAGE_MAP()
172  return handled;
173}
174
175void AutofillAgent::DidFinishDocumentLoad(WebLocalFrame* frame) {
176  // If the main frame just finished loading, we should process it.
177  if (!frame->parent())
178    main_frame_processed_ = false;
179
180  ProcessForms(*frame);
181}
182
183void AutofillAgent::FrameDetached(WebFrame* frame) {
184  form_cache_.ResetFrame(*frame);
185}
186
187void AutofillAgent::FrameWillClose(WebFrame* frame) {
188  if (in_flight_request_form_.isNull())
189    return;
190
191  for (WebFrame* temp = in_flight_request_form_.document().frame();
192       temp; temp = temp->parent()) {
193    if (temp == frame) {
194      Send(new AutofillHostMsg_CancelRequestAutocomplete(routing_id()));
195      break;
196    }
197  }
198}
199
200void AutofillAgent::WillSubmitForm(WebLocalFrame* frame,
201                                   const WebFormElement& form) {
202  FormData form_data;
203  if (WebFormElementToFormData(form,
204                               WebFormControlElement(),
205                               REQUIRE_AUTOCOMPLETE,
206                               static_cast<ExtractMask>(
207                                   EXTRACT_VALUE | EXTRACT_OPTION_TEXT),
208                               &form_data,
209                               NULL)) {
210    Send(new AutofillHostMsg_FormSubmitted(routing_id(), form_data,
211                                           base::TimeTicks::Now()));
212  }
213}
214
215void AutofillAgent::ZoomLevelChanged() {
216  // Any time the zoom level changes, the page's content moves, so any Autofill
217  // popups should be hidden. This is only needed for the new Autofill UI
218  // because WebKit already knows to hide the old UI when this occurs.
219  HidePopup();
220}
221
222void AutofillAgent::FocusedNodeChanged(const WebNode& node) {
223  if (password_generation_agent_ &&
224      password_generation_agent_->FocusedNodeHasChanged(node)) {
225    is_popup_possibly_visible_ = true;
226    return;
227  }
228
229  if (node.isNull() || !node.isElementNode())
230    return;
231
232  WebElement web_element = node.toConst<WebElement>();
233
234  if (!web_element.document().frame())
235      return;
236
237  const WebInputElement* element = toWebInputElement(&web_element);
238
239  if (!element || !element->isEnabled() || element->isReadOnly() ||
240      !element->isTextField() || element->isPasswordField())
241    return;
242
243  element_ = *element;
244}
245
246void AutofillAgent::OrientationChangeEvent() {
247  HidePopup();
248}
249
250void AutofillAgent::DidChangeScrollOffset(WebLocalFrame*) {
251  HidePopup();
252}
253
254void AutofillAgent::didRequestAutocomplete(
255    const WebFormElement& form,
256    const blink::WebAutocompleteParams& details) {
257  didRequestAutocomplete(form);
258}
259
260void AutofillAgent::didRequestAutocomplete(
261    const WebFormElement& form) {
262  // Disallow the dialog over non-https or broken https, except when the
263  // ignore SSL flag is passed. See http://crbug.com/272512.
264  // TODO(palmer): this should be moved to the browser process after frames
265  // get their own processes.
266  GURL url(form.document().url());
267  content::SSLStatus ssl_status =
268      render_view()->GetSSLStatusOfFrame(form.document().frame());
269  bool is_safe = url.SchemeIs(url::kHttpsScheme) &&
270      !net::IsCertStatusError(ssl_status.cert_status);
271  bool allow_unsafe = CommandLine::ForCurrentProcess()->HasSwitch(
272      ::switches::kReduceSecurityForTesting);
273
274  FormData form_data;
275  std::string error_message;
276  if (!in_flight_request_form_.isNull()) {
277    error_message = "already active.";
278  } else if (!is_safe && !allow_unsafe) {
279    error_message =
280        "must use a secure connection or --reduce-security-for-testing.";
281  } else if (!WebFormElementToFormData(form,
282                                       WebFormControlElement(),
283                                       REQUIRE_AUTOCOMPLETE,
284                                       EXTRACT_OPTIONS,
285                                       &form_data,
286                                       NULL)) {
287    error_message = "failed to parse form.";
288  }
289
290  if (!error_message.empty()) {
291    WebConsoleMessage console_message = WebConsoleMessage(
292        WebConsoleMessage::LevelLog,
293        WebString(base::ASCIIToUTF16("requestAutocomplete: ") +
294                      base::ASCIIToUTF16(error_message)));
295    WebFormElement(form).finishRequestAutocomplete(
296        WebFormElement::AutocompleteResultErrorDisabled);
297    return;
298  }
299
300  // Cancel any pending Autofill requests and hide any currently showing popups.
301  ++autofill_query_id_;
302  HidePopup();
303
304  in_flight_request_form_ = form;
305  Send(new AutofillHostMsg_RequestAutocomplete(routing_id(), form_data, url));
306}
307
308void AutofillAgent::setIgnoreTextChanges(bool ignore) {
309  ignore_text_changes_ = ignore;
310}
311
312void AutofillAgent::FormControlElementClicked(
313    const WebFormControlElement& element,
314    bool was_focused) {
315  const WebInputElement* input_element = toWebInputElement(&element);
316  if (!input_element && !IsTextAreaElement(element))
317    return;
318
319  if (was_focused)
320    ShowSuggestions(element, true, false, true, false);
321}
322
323void AutofillAgent::FormControlElementLostFocus() {
324  HidePopup();
325}
326
327void AutofillAgent::textFieldDidEndEditing(const WebInputElement& element) {
328  password_autofill_agent_->TextFieldDidEndEditing(element);
329  has_shown_autofill_popup_for_current_edit_ = false;
330  Send(new AutofillHostMsg_DidEndTextFieldEditing(routing_id()));
331}
332
333void AutofillAgent::textFieldDidChange(const WebFormControlElement& element) {
334  if (ignore_text_changes_)
335    return;
336
337  DCHECK(toWebInputElement(&element) || IsTextAreaElement(element));
338
339  if (did_set_node_text_) {
340    did_set_node_text_ = false;
341    return;
342  }
343
344  // We post a task for doing the Autofill as the caret position is not set
345  // properly at this point (http://bugs.webkit.org/show_bug.cgi?id=16976) and
346  // it is needed to trigger autofill.
347  weak_ptr_factory_.InvalidateWeakPtrs();
348  base::MessageLoop::current()->PostTask(
349      FROM_HERE,
350      base::Bind(&AutofillAgent::TextFieldDidChangeImpl,
351                 weak_ptr_factory_.GetWeakPtr(),
352                 element));
353}
354
355void AutofillAgent::TextFieldDidChangeImpl(
356    const WebFormControlElement& element) {
357  // If the element isn't focused then the changes don't matter. This check is
358  // required to properly handle IME interactions.
359  if (!element.focused())
360    return;
361
362  const WebInputElement* input_element = toWebInputElement(&element);
363  if (input_element) {
364    if (password_generation_agent_ &&
365        password_generation_agent_->TextDidChangeInTextField(*input_element)) {
366      is_popup_possibly_visible_ = true;
367      return;
368    }
369
370    if (password_autofill_agent_->TextDidChangeInTextField(*input_element)) {
371      element_ = element;
372      return;
373    }
374  }
375
376  ShowSuggestions(element, false, true, false, false);
377
378  FormData form;
379  FormFieldData field;
380  if (FindFormAndFieldForFormControlElement(element,
381                                            &form,
382                                            &field,
383                                            REQUIRE_NONE)) {
384    Send(new AutofillHostMsg_TextFieldDidChange(routing_id(), form, field,
385                                                base::TimeTicks::Now()));
386  }
387}
388
389void AutofillAgent::textFieldDidReceiveKeyDown(const WebInputElement& element,
390                                               const WebKeyboardEvent& event) {
391  if (password_autofill_agent_->TextFieldHandlingKeyDown(element, event)) {
392    element_ = element;
393    return;
394  }
395
396  if (event.windowsKeyCode == ui::VKEY_DOWN ||
397      event.windowsKeyCode == ui::VKEY_UP)
398    ShowSuggestions(element, true, true, true, false);
399}
400
401void AutofillAgent::openTextDataListChooser(const WebInputElement& element) {
402    ShowSuggestions(element, true, false, false, true);
403}
404
405void AutofillAgent::firstUserGestureObserved() {
406  password_autofill_agent_->FirstUserGestureObserved();
407}
408
409void AutofillAgent::AcceptDataListSuggestion(
410    const base::string16& suggested_value) {
411  WebInputElement* input_element = toWebInputElement(&element_);
412  DCHECK(input_element);
413  base::string16 new_value = suggested_value;
414  // If this element takes multiple values then replace the last part with
415  // the suggestion.
416  if (input_element->isMultiple() &&
417      input_element->formControlType() == WebString::fromUTF8("email")) {
418    std::vector<base::string16> parts;
419
420    base::SplitStringDontTrim(input_element->editingValue(), ',', &parts);
421    if (parts.size() == 0)
422      parts.push_back(base::string16());
423
424    base::string16 last_part = parts.back();
425    // We want to keep just the leading whitespace.
426    for (size_t i = 0; i < last_part.size(); ++i) {
427      if (!IsWhitespace(last_part[i])) {
428        last_part = last_part.substr(0, i);
429        break;
430      }
431    }
432    last_part.append(suggested_value);
433    parts[parts.size() - 1] = last_part;
434
435    new_value = JoinString(parts, ',');
436  }
437  FillFieldWithValue(new_value, input_element);
438}
439
440void AutofillAgent::OnFieldTypePredictionsAvailable(
441    const std::vector<FormDataPredictions>& forms) {
442  for (size_t i = 0; i < forms.size(); ++i) {
443    form_cache_.ShowPredictions(forms[i]);
444  }
445}
446
447void AutofillAgent::OnFillForm(int query_id, const FormData& form) {
448  if (!render_view()->GetWebView() || query_id != autofill_query_id_)
449    return;
450
451  was_query_node_autofilled_ = element_.isAutofilled();
452  FillForm(form, element_);
453  Send(new AutofillHostMsg_DidFillAutofillFormData(routing_id(),
454                                                   base::TimeTicks::Now()));
455}
456
457void AutofillAgent::OnPreviewForm(int query_id, const FormData& form) {
458  if (!render_view()->GetWebView() || query_id != autofill_query_id_)
459    return;
460
461  was_query_node_autofilled_ = element_.isAutofilled();
462  PreviewForm(form, element_);
463  Send(new AutofillHostMsg_DidPreviewAutofillFormData(routing_id()));
464}
465
466void AutofillAgent::OnClearForm() {
467  form_cache_.ClearFormWithElement(element_);
468}
469
470void AutofillAgent::OnClearPreviewedForm() {
471  if (!element_.isNull()) {
472    if (password_autofill_agent_->DidClearAutofillSelection(element_))
473      return;
474
475    ClearPreviewedFormWithElement(element_, was_query_node_autofilled_);
476  } else {
477    // TODO(isherman): There seem to be rare cases where this code *is*
478    // reachable: see [ http://crbug.com/96321#c6 ].  Ideally we would
479    // understand those cases and fix the code to avoid them.  However, so far I
480    // have been unable to reproduce such a case locally.  If you hit this
481    // NOTREACHED(), please file a bug against me.
482    NOTREACHED();
483  }
484}
485
486void AutofillAgent::OnFillFieldWithValue(const base::string16& value) {
487  WebInputElement* input_element = toWebInputElement(&element_);
488  if (input_element)
489    FillFieldWithValue(value, input_element);
490}
491
492void AutofillAgent::OnPreviewFieldWithValue(const base::string16& value) {
493  WebInputElement* input_element = toWebInputElement(&element_);
494  if (input_element)
495    PreviewFieldWithValue(value, input_element);
496}
497
498void AutofillAgent::OnAcceptDataListSuggestion(const base::string16& value) {
499  AcceptDataListSuggestion(value);
500}
501
502void AutofillAgent::OnFillPasswordSuggestion(const base::string16& username,
503                                             const base::string16& password) {
504  bool handled = password_autofill_agent_->FillSuggestion(
505      element_,
506      username,
507      password);
508  DCHECK(handled);
509}
510
511void AutofillAgent::OnPreviewPasswordSuggestion(
512    const base::string16& username,
513    const base::string16& password) {
514  bool handled = password_autofill_agent_->PreviewSuggestion(
515      element_,
516      username,
517      password);
518  DCHECK(handled);
519}
520
521void AutofillAgent::OnRequestAutocompleteResult(
522    WebFormElement::AutocompleteResult result,
523    const base::string16& message,
524    const FormData& form_data) {
525  if (in_flight_request_form_.isNull())
526    return;
527
528  if (result == WebFormElement::AutocompleteResultSuccess) {
529    FillFormIncludingNonFocusableElements(form_data, in_flight_request_form_);
530    if (!in_flight_request_form_.checkValidity())
531      result = WebFormElement::AutocompleteResultErrorInvalid;
532  }
533
534  in_flight_request_form_.finishRequestAutocomplete(result);
535
536  if (!message.empty()) {
537    const base::string16 prefix(base::ASCIIToUTF16("requestAutocomplete: "));
538    WebConsoleMessage console_message = WebConsoleMessage(
539        WebConsoleMessage::LevelLog, WebString(prefix + message));
540    in_flight_request_form_.document().frame()->addMessageToConsole(
541        console_message);
542  }
543
544  in_flight_request_form_.reset();
545}
546
547void AutofillAgent::ShowSuggestions(const WebFormControlElement& element,
548                                    bool autofill_on_empty_values,
549                                    bool requires_caret_at_end,
550                                    bool display_warning_if_disabled,
551                                    bool datalist_only) {
552  if (!element.isEnabled() || element.isReadOnly())
553    return;
554
555  const WebInputElement* input_element = toWebInputElement(&element);
556  if (input_element) {
557    if (!input_element->isTextField() || input_element->isPasswordField())
558      return;
559    if (!datalist_only && !input_element->suggestedValue().isEmpty())
560      return;
561  } else {
562    DCHECK(IsTextAreaElement(element));
563    if (!element.toConst<WebTextAreaElement>().suggestedValue().isEmpty())
564      return;
565  }
566
567  // Don't attempt to autofill with values that are too large or if filling
568  // criteria are not met.
569  WebString value = element.editingValue();
570  if (!datalist_only &&
571      (value.length() > kMaxDataLength ||
572       (!autofill_on_empty_values && value.isEmpty()) ||
573       (requires_caret_at_end &&
574        (element.selectionStart() != element.selectionEnd() ||
575         element.selectionEnd() != static_cast<int>(value.length()))))) {
576    // Any popup currently showing is obsolete.
577    HidePopup();
578    return;
579  }
580
581  element_ = element;
582  if (input_element &&
583      password_autofill_agent_->ShowSuggestions(*input_element)) {
584    is_popup_possibly_visible_ = true;
585    return;
586  }
587
588  // If autocomplete is disabled at the field level, ensure that the native
589  // UI won't try to show a warning, since that may conflict with a custom
590  // popup. Note that we cannot use the WebKit method element.autoComplete()
591  // as it does not allow us to distinguish the case where autocomplete is
592  // disabled for *both* the element and for the form.
593  const base::string16 autocomplete_attribute =
594      element.getAttribute("autocomplete");
595  if (LowerCaseEqualsASCII(autocomplete_attribute, "off"))
596    display_warning_if_disabled = false;
597
598  QueryAutofillSuggestions(element,
599                           display_warning_if_disabled,
600                           datalist_only);
601}
602
603void AutofillAgent::QueryAutofillSuggestions(
604    const WebFormControlElement& element,
605    bool display_warning_if_disabled,
606    bool datalist_only) {
607  if (!element.document().frame())
608    return;
609
610  DCHECK(toWebInputElement(&element) || IsTextAreaElement(element));
611
612  static int query_counter = 0;
613  autofill_query_id_ = query_counter++;
614  display_warning_if_disabled_ = display_warning_if_disabled;
615
616  // If autocomplete is disabled at the form level, we want to see if there
617  // would have been any suggestions were it enabled, so that we can show a
618  // warning.  Otherwise, we want to ignore fields that disable autocomplete, so
619  // that the suggestions list does not include suggestions for these form
620  // fields -- see comment 1 on http://crbug.com/69914
621  const RequirementsMask requirements =
622      element.autoComplete() ? REQUIRE_AUTOCOMPLETE : REQUIRE_NONE;
623
624  FormData form;
625  FormFieldData field;
626  if (!FindFormAndFieldForFormControlElement(element, &form, &field,
627                                             requirements)) {
628    // If we didn't find the cached form, at least let autocomplete have a shot
629    // at providing suggestions.
630    WebFormControlElementToFormField(element, EXTRACT_VALUE, &field);
631  }
632  if (datalist_only)
633    field.should_autocomplete = false;
634
635  gfx::RectF bounding_box_scaled =
636      GetScaledBoundingBox(web_view_->pageScaleFactor(), &element_);
637
638  std::vector<base::string16> data_list_values;
639  std::vector<base::string16> data_list_labels;
640  const WebInputElement* input_element = toWebInputElement(&element);
641  if (input_element) {
642    // Find the datalist values and send them to the browser process.
643    GetDataListSuggestions(*input_element,
644                           datalist_only,
645                           &data_list_values,
646                           &data_list_labels);
647    TrimStringVectorForIPC(&data_list_values);
648    TrimStringVectorForIPC(&data_list_labels);
649  }
650
651  is_popup_possibly_visible_ = true;
652  Send(new AutofillHostMsg_SetDataList(routing_id(),
653                                       data_list_values,
654                                       data_list_labels));
655
656  Send(new AutofillHostMsg_QueryFormFieldAutofill(routing_id(),
657                                                  autofill_query_id_,
658                                                  form,
659                                                  field,
660                                                  bounding_box_scaled,
661                                                  display_warning_if_disabled));
662}
663
664void AutofillAgent::FillFieldWithValue(const base::string16& value,
665                                       WebInputElement* node) {
666  did_set_node_text_ = true;
667  node->setEditingValue(value.substr(0, node->maxLength()));
668  node->setAutofilled(true);
669}
670
671void AutofillAgent::PreviewFieldWithValue(const base::string16& value,
672                                          WebInputElement* node) {
673  was_query_node_autofilled_ = element_.isAutofilled();
674  node->setSuggestedValue(value.substr(0, node->maxLength()));
675  node->setAutofilled(true);
676  node->setSelectionRange(node->value().length(),
677                          node->suggestedValue().length());
678}
679
680void AutofillAgent::ProcessForms(const WebLocalFrame& frame) {
681  // Record timestamp of when the forms are first seen. This is used to
682  // measure the overhead of the Autofill feature.
683  base::TimeTicks forms_seen_timestamp = base::TimeTicks::Now();
684
685  std::vector<FormData> forms;
686  form_cache_.ExtractNewForms(frame, &forms);
687
688  // Always communicate to browser process for topmost frame.
689  if (!forms.empty() ||
690      (!frame.parent() && !main_frame_processed_)) {
691    Send(new AutofillHostMsg_FormsSeen(routing_id(), forms,
692                                       forms_seen_timestamp));
693  }
694
695  if (!frame.parent())
696    main_frame_processed_ = true;
697}
698
699void AutofillAgent::HidePopup() {
700  if (!is_popup_possibly_visible_)
701    return;
702
703  if (!element_.isNull())
704    OnClearPreviewedForm();
705
706  is_popup_possibly_visible_ = false;
707  Send(new AutofillHostMsg_HidePopup(routing_id()));
708}
709
710void AutofillAgent::didAssociateFormControls(const WebVector<WebNode>& nodes) {
711  for (size_t i = 0; i < nodes.size(); ++i) {
712    WebLocalFrame* frame = nodes[i].document().frame();
713    // Only monitors dynamic forms created in the top frame. Dynamic forms
714    // inserted in iframes are not captured yet. Frame is only processed
715    // if it has finished loading, otherwise you can end up with a partially
716    // parsed form.
717    if (frame && !frame->parent() && !frame->isLoading()) {
718      ProcessForms(*frame);
719      password_autofill_agent_->OnDynamicFormsSeen(frame);
720      return;
721    }
722  }
723}
724
725}  // namespace autofill
726