root/components/autofill/content/renderer/autofill_agent.cc

DEFINITIONS

1. GetDataListSuggestions
2. TrimStringVectorForIPC
3. weak_ptr_factory_
4. OnMessageReceived
5. DidFinishDocumentLoad
6. FrameDetached
7. FrameWillClose
8. WillSubmitForm
9. ZoomLevelChanged
10. FocusedNodeChanged
11. OrientationChangeEvent
12. DidChangeScrollOffset
13. didRequestAutocomplete
14. setIgnoreTextChanges
15. FormControlElementClicked
16. FormControlElementLostFocus
17. textFieldDidEndEditing
18. textFieldDidChange
19. TextFieldDidChangeImpl
20. textFieldDidReceiveKeyDown
21. openTextDataListChooser
22. AcceptDataListSuggestion
23. OnFieldTypePredictionsAvailable
24. OnFillForm
25. OnPreviewForm
26. OnClearForm
27. OnClearPreviewedForm
28. OnFillFieldWithValue
29. OnPreviewFieldWithValue
30. OnAcceptDataListSuggestion
31. OnAcceptPasswordAutofillSuggestion
32. OnRequestAutocompleteResult
33. ShowSuggestions
34. QueryAutofillSuggestions
35. FillFieldWithValue
36. PreviewFieldWithValue
37. HidePopup
38. didAssociateFormControls

// Copyright 2013 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 "components/autofill/content/renderer/autofill_agent.h"

#include "base/bind.h"
#include "base/command_line.h"
#include "base/message_loop/message_loop.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "base/time/time.h"
#include "components/autofill/content/common/autofill_messages.h"
#include "components/autofill/content/renderer/form_autofill_util.h"
#include "components/autofill/content/renderer/page_click_tracker.h"
#include "components/autofill/content/renderer/password_autofill_agent.h"
#include "components/autofill/content/renderer/password_generation_agent.h"
#include "components/autofill/core/common/autofill_constants.h"
#include "components/autofill/core/common/autofill_data_validation.h"
#include "components/autofill/core/common/autofill_switches.h"
#include "components/autofill/core/common/form_data.h"
#include "components/autofill/core/common/form_data_predictions.h"
#include "components/autofill/core/common/form_field_data.h"
#include "components/autofill/core/common/password_form.h"
#include "components/autofill/core/common/web_element_descriptor.h"
#include "content/public/common/content_switches.h"
#include "content/public/common/ssl_status.h"
#include "content/public/common/url_constants.h"
#include "content/public/renderer/render_view.h"
#include "grit/component_strings.h"
#include "net/cert/cert_status_flags.h"
#include "third_party/WebKit/public/platform/WebRect.h"
#include "third_party/WebKit/public/platform/WebURLRequest.h"
#include "third_party/WebKit/public/web/WebDataSource.h"
#include "third_party/WebKit/public/web/WebDocument.h"
#include "third_party/WebKit/public/web/WebElementCollection.h"
#include "third_party/WebKit/public/web/WebFormControlElement.h"
#include "third_party/WebKit/public/web/WebFormElement.h"
#include "third_party/WebKit/public/web/WebFrame.h"
#include "third_party/WebKit/public/web/WebInputEvent.h"
#include "third_party/WebKit/public/web/WebNode.h"
#include "third_party/WebKit/public/web/WebOptionElement.h"
#include "third_party/WebKit/public/web/WebTextAreaElement.h"
#include "third_party/WebKit/public/web/WebView.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/events/keycodes/keyboard_codes.h"

using blink::WebAutofillClient;
using blink::WebElement;
using blink::WebElementCollection;
using blink::WebFormControlElement;
using blink::WebFormElement;
using blink::WebFrame;
using blink::WebInputElement;
using blink::WebKeyboardEvent;
using blink::WebNode;
using blink::WebOptionElement;
using blink::WebString;
using blink::WebTextAreaElement;
using blink::WebVector;

namespace autofill {

namespace {

// Gets all the data list values (with corresponding label) for the given
// element.
void GetDataListSuggestions(const WebInputElement& element,
                            bool ignore_current_value,
                            std::vector<base::string16>* values,
                            std::vector<base::string16>* labels) {
  WebElementCollection options = element.dataListOptions();
  if (options.isNull())
    return;

  base::string16 prefix;
  if (!ignore_current_value) {
    prefix = element.editingValue();
    if (element.isMultiple() &&
        element.formControlType() == WebString::fromUTF8("email")) {
      std::vector<base::string16> parts;
      base::SplitStringDontTrim(prefix, ',', &parts);
      if (parts.size() > 0) {
        base::TrimWhitespace(parts[parts.size() - 1], base::TRIM_LEADING,
                             &prefix);
      }
    }
  }
  for (WebOptionElement option = options.firstItem().to<WebOptionElement>();
       !option.isNull(); option = options.nextItem().to<WebOptionElement>()) {
    if (!StartsWith(option.value(), prefix, false) ||
        option.value() == prefix ||
        !element.isValidValue(option.value()))
      continue;

    values->push_back(option.value());
    if (option.value() != option.label())
      labels->push_back(option.label());
    else
      labels->push_back(base::string16());
  }
}

// Trim the vector before sending it to the browser process to ensure we
// don't send too much data through the IPC.
void TrimStringVectorForIPC(std::vector<base::string16>* strings) {
  // Limit the size of the vector.
  if (strings->size() > kMaxListSize)
    strings->resize(kMaxListSize);

  // Limit the size of the strings in the vector.
  for (size_t i = 0; i < strings->size(); ++i) {
    if ((*strings)[i].length() > kMaxDataLength)
      (*strings)[i].resize(kMaxDataLength);
  }
}

}  // namespace

AutofillAgent::AutofillAgent(content::RenderView* render_view,
                             PasswordAutofillAgent* password_autofill_agent,
                             PasswordGenerationAgent* password_generation_agent)
    : content::RenderViewObserver(render_view),
      password_autofill_agent_(password_autofill_agent),
      password_generation_agent_(password_generation_agent),
      autofill_query_id_(0),
      web_view_(render_view->GetWebView()),
      display_warning_if_disabled_(false),
      was_query_node_autofilled_(false),
      has_shown_autofill_popup_for_current_edit_(false),
      did_set_node_text_(false),
      has_new_forms_for_browser_(false),
      ignore_text_changes_(false),
      is_popup_possibly_visible_(false),
      weak_ptr_factory_(this) {
  render_view->GetWebView()->setAutofillClient(this);

  // The PageClickTracker is a RenderViewObserver, and hence will be freed when
  // the RenderView is destroyed.
  new PageClickTracker(render_view, this);
}

AutofillAgent::~AutofillAgent() {}

bool AutofillAgent::OnMessageReceived(const IPC::Message& message) {
  bool handled = true;
  IPC_BEGIN_MESSAGE_MAP(AutofillAgent, message)
    IPC_MESSAGE_HANDLER(AutofillMsg_FillForm, OnFillForm)
    IPC_MESSAGE_HANDLER(AutofillMsg_PreviewForm, OnPreviewForm)
    IPC_MESSAGE_HANDLER(AutofillMsg_FieldTypePredictionsAvailable,
                        OnFieldTypePredictionsAvailable)
    IPC_MESSAGE_HANDLER(AutofillMsg_ClearForm, OnClearForm)
    IPC_MESSAGE_HANDLER(AutofillMsg_ClearPreviewedForm, OnClearPreviewedForm)
    IPC_MESSAGE_HANDLER(AutofillMsg_FillFieldWithValue, OnFillFieldWithValue)
    IPC_MESSAGE_HANDLER(AutofillMsg_PreviewFieldWithValue,
                        OnPreviewFieldWithValue)
    IPC_MESSAGE_HANDLER(AutofillMsg_AcceptDataListSuggestion,
                        OnAcceptDataListSuggestion)
    IPC_MESSAGE_HANDLER(AutofillMsg_AcceptPasswordAutofillSuggestion,
                        OnAcceptPasswordAutofillSuggestion)
    IPC_MESSAGE_HANDLER(AutofillMsg_RequestAutocompleteResult,
                        OnRequestAutocompleteResult)
    IPC_MESSAGE_UNHANDLED(handled = false)
  IPC_END_MESSAGE_MAP()
  return handled;
}

void AutofillAgent::DidFinishDocumentLoad(WebFrame* frame) {
  // Record timestamp on document load. This is used to record overhead of
  // Autofill feature.
  forms_seen_timestamp_ = base::TimeTicks::Now();

  // The document has now been fully loaded.  Scan for forms to be sent up to
  // the browser.
  std::vector<FormData> forms;
  bool has_more_forms = false;
  if (!frame->parent()) {
    form_elements_.clear();
    has_more_forms = form_cache_.ExtractFormsAndFormElements(
        *frame, kRequiredAutofillFields, &forms, &form_elements_);
  } else {
    form_cache_.ExtractForms(*frame, &forms);
  }

  autofill::FormsSeenState state = has_more_forms ?
      autofill::PARTIAL_FORMS_SEEN : autofill::NO_SPECIAL_FORMS_SEEN;

  // Always communicate to browser process for topmost frame.
  if (!forms.empty() || !frame->parent()) {
    Send(new AutofillHostMsg_FormsSeen(routing_id(), forms,
                                       forms_seen_timestamp_,
                                       state));
  }
}

void AutofillAgent::FrameDetached(WebFrame* frame) {
  form_cache_.ResetFrame(*frame);
}

void AutofillAgent::FrameWillClose(WebFrame* frame) {
  if (in_flight_request_form_.isNull())
    return;

  for (WebFrame* temp = in_flight_request_form_.document().frame();
       temp; temp = temp->parent()) {
    if (temp == frame) {
      Send(new AutofillHostMsg_CancelRequestAutocomplete(routing_id()));
      break;
    }
  }
}

void AutofillAgent::WillSubmitForm(WebFrame* frame,
                                   const WebFormElement& form) {
  FormData form_data;
  if (WebFormElementToFormData(form,
                               WebFormControlElement(),
                               REQUIRE_AUTOCOMPLETE,
                               static_cast<ExtractMask>(
                                   EXTRACT_VALUE | EXTRACT_OPTION_TEXT),
                               &form_data,
                               NULL)) {
    Send(new AutofillHostMsg_FormSubmitted(routing_id(), form_data,
                                           base::TimeTicks::Now()));
  }
}

void AutofillAgent::ZoomLevelChanged() {
  // Any time the zoom level changes, the page's content moves, so any Autofill
  // popups should be hidden. This is only needed for the new Autofill UI
  // because WebKit already knows to hide the old UI when this occurs.
  HidePopup();
}

void AutofillAgent::FocusedNodeChanged(const WebNode& node) {
  if (node.isNull() || !node.isElementNode())
    return;

  WebElement web_element = node.toConst<WebElement>();

  if (!web_element.document().frame())
      return;

  const WebInputElement* element = toWebInputElement(&web_element);

  if (!element || !element->isEnabled() || element->isReadOnly() ||
      !element->isTextField() || element->isPasswordField())
    return;

  element_ = *element;
}

void AutofillAgent::OrientationChangeEvent(int orientation) {
  HidePopup();
}

void AutofillAgent::DidChangeScrollOffset(WebFrame*) {
  HidePopup();
}

void AutofillAgent::didRequestAutocomplete(WebFrame* frame,
                                           const WebFormElement& form) {
  // Disallow the dialog over non-https or broken https, except when the
  // ignore SSL flag is passed. See http://crbug.com/272512.
  // TODO(palmer): this should be moved to the browser process after frames
  // get their own processes.
  GURL url(frame->document().url());
  content::SSLStatus ssl_status = render_view()->GetSSLStatusOfFrame(frame);
  bool is_safe = url.SchemeIs(content::kHttpsScheme) &&
      !net::IsCertStatusError(ssl_status.cert_status);
  bool allow_unsafe = CommandLine::ForCurrentProcess()->HasSwitch(
      ::switches::kReduceSecurityForTesting);

  FormData form_data;
  if (!in_flight_request_form_.isNull() ||
      (!is_safe && !allow_unsafe) ||
      !WebFormElementToFormData(form,
                                WebFormControlElement(),
                                REQUIRE_AUTOCOMPLETE,
                                EXTRACT_OPTIONS,
                                &form_data,
                                NULL)) {
    WebFormElement(form).finishRequestAutocomplete(
        WebFormElement::AutocompleteResultErrorDisabled);
    return;
  }

  // Cancel any pending Autofill requests and hide any currently showing popups.
  ++autofill_query_id_;
  HidePopup();

  in_flight_request_form_ = form;
  Send(new AutofillHostMsg_RequestAutocomplete(routing_id(), form_data, url));
}

void AutofillAgent::setIgnoreTextChanges(bool ignore) {
  ignore_text_changes_ = ignore;
}

void AutofillAgent::FormControlElementClicked(
    const WebFormControlElement& element,
    bool was_focused) {
  const WebInputElement* input_element = toWebInputElement(&element);
  if (!input_element && !IsTextAreaElement(element))
    return;

  if (was_focused)
    ShowSuggestions(element, true, false, true, false);
}

void AutofillAgent::FormControlElementLostFocus() {
  HidePopup();
}

void AutofillAgent::textFieldDidEndEditing(const WebInputElement& element) {
  password_autofill_agent_->TextFieldDidEndEditing(element);
  has_shown_autofill_popup_for_current_edit_ = false;
  Send(new AutofillHostMsg_DidEndTextFieldEditing(routing_id()));
}

void AutofillAgent::textFieldDidChange(const WebFormControlElement& element) {
  if (ignore_text_changes_)
    return;

  DCHECK(toWebInputElement(&element) || IsTextAreaElement(element));

  if (did_set_node_text_) {
    did_set_node_text_ = false;
    return;
  }

  // We post a task for doing the Autofill as the caret position is not set
  // properly at this point (http://bugs.webkit.org/show_bug.cgi?id=16976) and
  // it is needed to trigger autofill.
  weak_ptr_factory_.InvalidateWeakPtrs();
  base::MessageLoop::current()->PostTask(
      FROM_HERE,
      base::Bind(&AutofillAgent::TextFieldDidChangeImpl,
                 weak_ptr_factory_.GetWeakPtr(),
                 element));
}

void AutofillAgent::TextFieldDidChangeImpl(
    const WebFormControlElement& element) {
  // If the element isn't focused then the changes don't matter. This check is
  // required to properly handle IME interactions.
  if (!element.focused())
    return;

  const WebInputElement* input_element = toWebInputElement(&element);
  if (input_element) {
    if (password_generation_agent_ &&
        password_generation_agent_->TextDidChangeInTextField(*input_element)) {
      return;
    }

    if (password_autofill_agent_->TextDidChangeInTextField(*input_element)) {
      element_ = element;
      return;
    }
  }

  ShowSuggestions(element, false, true, false, false);

  FormData form;
  FormFieldData field;
  if (FindFormAndFieldForFormControlElement(element,
                                            &form,
                                            &field,
                                            REQUIRE_NONE)) {
    Send(new AutofillHostMsg_TextFieldDidChange(routing_id(), form, field,
                                                base::TimeTicks::Now()));
  }
}

void AutofillAgent::textFieldDidReceiveKeyDown(const WebInputElement& element,
                                               const WebKeyboardEvent& event) {
  if (password_autofill_agent_->TextFieldHandlingKeyDown(element, event)) {
    element_ = element;
    return;
  }

  if (event.windowsKeyCode == ui::VKEY_DOWN ||
      event.windowsKeyCode == ui::VKEY_UP)
    ShowSuggestions(element, true, true, true, false);
}

void AutofillAgent::openTextDataListChooser(const WebInputElement& element) {
    ShowSuggestions(element, true, false, false, true);
}

void AutofillAgent::AcceptDataListSuggestion(
    const base::string16& suggested_value) {
  WebInputElement* input_element = toWebInputElement(&element_);
  DCHECK(input_element);
  base::string16 new_value = suggested_value;
  // If this element takes multiple values then replace the last part with
  // the suggestion.
  if (input_element->isMultiple() &&
      input_element->formControlType() == WebString::fromUTF8("email")) {
    std::vector<base::string16> parts;

    base::SplitStringDontTrim(input_element->editingValue(), ',', &parts);
    if (parts.size() == 0)
      parts.push_back(base::string16());

    base::string16 last_part = parts.back();
    // We want to keep just the leading whitespace.
    for (size_t i = 0; i < last_part.size(); ++i) {
      if (!IsWhitespace(last_part[i])) {
        last_part = last_part.substr(0, i);
        break;
      }
    }
    last_part.append(suggested_value);
    parts[parts.size() - 1] = last_part;

    new_value = JoinString(parts, ',');
  }
  FillFieldWithValue(new_value, input_element);
}

void AutofillAgent::OnFieldTypePredictionsAvailable(
    const std::vector<FormDataPredictions>& forms) {
  for (size_t i = 0; i < forms.size(); ++i) {
    form_cache_.ShowPredictions(forms[i]);
  }
}

void AutofillAgent::OnFillForm(int query_id, const FormData& form) {
  if (!render_view()->GetWebView() || query_id != autofill_query_id_)
    return;

  was_query_node_autofilled_ = element_.isAutofilled();
  FillForm(form, element_);
  Send(new AutofillHostMsg_DidFillAutofillFormData(routing_id(),
                                                   base::TimeTicks::Now()));
}

void AutofillAgent::OnPreviewForm(int query_id, const FormData& form) {
  if (!render_view()->GetWebView() || query_id != autofill_query_id_)
    return;

  was_query_node_autofilled_ = element_.isAutofilled();
  PreviewForm(form, element_);
  Send(new AutofillHostMsg_DidPreviewAutofillFormData(routing_id()));
}

void AutofillAgent::OnClearForm() {
  form_cache_.ClearFormWithElement(element_);
}

void AutofillAgent::OnClearPreviewedForm() {
  if (!element_.isNull()) {
    if (password_autofill_agent_->DidClearAutofillSelection(element_))
      return;

    ClearPreviewedFormWithElement(element_, was_query_node_autofilled_);
  } else {
    // TODO(isherman): There seem to be rare cases where this code *is*
    // reachable: see [ http://crbug.com/96321#c6 ].  Ideally we would
    // understand those cases and fix the code to avoid them.  However, so far I
    // have been unable to reproduce such a case locally.  If you hit this
    // NOTREACHED(), please file a bug against me.
    NOTREACHED();
  }
}

void AutofillAgent::OnFillFieldWithValue(const base::string16& value) {
  WebInputElement* input_element = toWebInputElement(&element_);
  if (input_element)
    FillFieldWithValue(value, input_element);
}

void AutofillAgent::OnPreviewFieldWithValue(const base::string16& value) {
  WebInputElement* input_element = toWebInputElement(&element_);
  if (input_element)
    PreviewFieldWithValue(value, input_element);
}

void AutofillAgent::OnAcceptDataListSuggestion(const base::string16& value) {
  AcceptDataListSuggestion(value);
}

void AutofillAgent::OnAcceptPasswordAutofillSuggestion(
    const base::string16& username) {
  // We need to make sure this is handled here because the browser process
  // skipped it handling because it believed it would be handled here. If it
  // isn't handled here then the browser logic needs to be updated.
  bool handled = password_autofill_agent_->DidAcceptAutofillSuggestion(
      element_,
      username);
  DCHECK(handled);
}

void AutofillAgent::OnRequestAutocompleteResult(
    WebFormElement::AutocompleteResult result,
    const FormData& form_data) {
  if (in_flight_request_form_.isNull())
    return;

  if (result == WebFormElement::AutocompleteResultSuccess) {
    FillFormIncludingNonFocusableElements(form_data, in_flight_request_form_);
    if (!in_flight_request_form_.checkValidityWithoutDispatchingEvents())
      result = WebFormElement::AutocompleteResultErrorInvalid;
  }

  in_flight_request_form_.finishRequestAutocomplete(result);
  in_flight_request_form_.reset();
}

void AutofillAgent::ShowSuggestions(const WebFormControlElement& element,
                                    bool autofill_on_empty_values,
                                    bool requires_caret_at_end,
                                    bool display_warning_if_disabled,
                                    bool datalist_only) {
  if (!element.isEnabled() || element.isReadOnly())
    return;

  const WebInputElement* input_element = toWebInputElement(&element);
  if (input_element) {
    if (!input_element->isTextField() || input_element->isPasswordField())
      return;
    if (!datalist_only && !input_element->suggestedValue().isEmpty())
      return;
  } else {
    DCHECK(IsTextAreaElement(element));
    if (!element.toConst<WebTextAreaElement>().suggestedValue().isEmpty())
      return;
  }

  // Don't attempt to autofill with values that are too large or if filling
  // criteria are not met.
  WebString value = element.editingValue();
  if (!datalist_only &&
      (value.length() > kMaxDataLength ||
       (!autofill_on_empty_values && value.isEmpty()) ||
       (requires_caret_at_end &&
        (element.selectionStart() != element.selectionEnd() ||
         element.selectionEnd() != static_cast<int>(value.length()))))) {
    // Any popup currently showing is obsolete.
    HidePopup();
    return;
  }

  element_ = element;
  if (input_element &&
      password_autofill_agent_->ShowSuggestions(*input_element)) {
    is_popup_possibly_visible_ = true;
    return;
  }

  // If autocomplete is disabled at the field level, ensure that the native
  // UI won't try to show a warning, since that may conflict with a custom
  // popup. Note that we cannot use the WebKit method element.autoComplete()
  // as it does not allow us to distinguish the case where autocomplete is
  // disabled for *both* the element and for the form.
  const base::string16 autocomplete_attribute =
      element.getAttribute("autocomplete");
  if (LowerCaseEqualsASCII(autocomplete_attribute, "off"))
    display_warning_if_disabled = false;

  QueryAutofillSuggestions(element,
                           display_warning_if_disabled,
                           datalist_only);
}

void AutofillAgent::QueryAutofillSuggestions(
    const WebFormControlElement& element,
    bool display_warning_if_disabled,
    bool datalist_only) {
  if (!element.document().frame())
    return;

  DCHECK(toWebInputElement(&element) || IsTextAreaElement(element));

  static int query_counter = 0;
  autofill_query_id_ = query_counter++;
  display_warning_if_disabled_ = display_warning_if_disabled;

  // If autocomplete is disabled at the form level, we want to see if there
  // would have been any suggestions were it enabled, so that we can show a
  // warning.  Otherwise, we want to ignore fields that disable autocomplete, so
  // that the suggestions list does not include suggestions for these form
  // fields -- see comment 1 on http://crbug.com/69914
  const RequirementsMask requirements =
      element.autoComplete() ? REQUIRE_AUTOCOMPLETE : REQUIRE_NONE;

  FormData form;
  FormFieldData field;
  if (!FindFormAndFieldForFormControlElement(element, &form, &field,
                                             requirements)) {
    // If we didn't find the cached form, at least let autocomplete have a shot
    // at providing suggestions.
    WebFormControlElementToFormField(element, EXTRACT_VALUE, &field);
  }
  if (datalist_only)
    field.should_autocomplete = false;

  gfx::RectF bounding_box_scaled =
      GetScaledBoundingBox(web_view_->pageScaleFactor(), &element_);

  const WebInputElement* input_element = toWebInputElement(&element);
  if (input_element) {
    // Find the datalist values and send them to the browser process.
    std::vector<base::string16> data_list_values;
    std::vector<base::string16> data_list_labels;
    GetDataListSuggestions(*input_element,
                           datalist_only,
                           &data_list_values,
                           &data_list_labels);
    TrimStringVectorForIPC(&data_list_values);
    TrimStringVectorForIPC(&data_list_labels);

    Send(new AutofillHostMsg_SetDataList(routing_id(),
                                         data_list_values,
                                         data_list_labels));
  }

  is_popup_possibly_visible_ = true;
  Send(new AutofillHostMsg_QueryFormFieldAutofill(routing_id(),
                                                  autofill_query_id_,
                                                  form,
                                                  field,
                                                  bounding_box_scaled,
                                                  display_warning_if_disabled));
}

void AutofillAgent::FillFieldWithValue(const base::string16& value,
                                       WebInputElement* node) {
  did_set_node_text_ = true;
  node->setEditingValue(value.substr(0, node->maxLength()));
  node->setAutofilled(true);
}

void AutofillAgent::PreviewFieldWithValue(const base::string16& value,
                                          WebInputElement* node) {
  was_query_node_autofilled_ = element_.isAutofilled();
  node->setSuggestedValue(value.substr(0, node->maxLength()));
  node->setAutofilled(true);
  node->setSelectionRange(node->value().length(),
                          node->suggestedValue().length());
}

void AutofillAgent::HidePopup() {
  if (!is_popup_possibly_visible_)
    return;

  if (!element_.isNull())
    OnClearPreviewedForm();

  is_popup_possibly_visible_ = false;
  Send(new AutofillHostMsg_HidePopup(routing_id()));
}

// TODO(isherman): Decide if we want to support non-password autofill with AJAX.
void AutofillAgent::didAssociateFormControls(const WebVector<WebNode>& nodes) {
  for (size_t i = 0; i < nodes.size(); ++i) {
    WebFrame* frame = nodes[i].document().frame();
    // Only monitors dynamic forms created in the top frame. Dynamic forms
    // inserted in iframes are not captured yet.
    if (frame && !frame->parent()) {
      password_autofill_agent_->OnDynamicFormsSeen(frame);
      return;
    }
  }
}

}  // namespace autofill