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// Copyright (c) 2010 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.
#ifndef CHROME_RENDERER_AUTOFILL_HELPER_H_
#define CHROME_RENDERER_AUTOFILL_HELPER_H_
#pragma once
#include <vector>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/task.h"
#include "chrome/renderer/form_manager.h"
#include "chrome/renderer/page_click_listener.h"
#include "chrome/renderer/render_view_observer.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebAutoFillClient.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebNode.h"
class PasswordAutocompleteManager;
// AutoFillHelper deals with AutoFill related communications between WebKit and
// the browser. There is one AutofillHelper per RenderView.
// This code was originally part of RenderView.
// Note that AutoFill encompasses:
// - single text field suggestions, that we usually refer to as Autocomplete
// - entire form fill based on one field entry, referred to as form AutoFill.
class AutoFillHelper : public RenderViewObserver,
public PageClickListener,
public WebKit::WebAutoFillClient {
public:
// PasswordAutocompleteManager is guaranteed to outlive AutoFillHelper.
AutoFillHelper(RenderView* render_view,
PasswordAutocompleteManager* password_autocomplete_manager);
// WebKit::WebAutoFillClient implementation. Public for tests.
virtual void didAcceptAutoFillSuggestion(const WebKit::WebNode& node,
const WebKit::WebString& value,
const WebKit::WebString& label,
int unique_id,
unsigned index);
virtual void didSelectAutoFillSuggestion(const WebKit::WebNode& node,
const WebKit::WebString& value,
const WebKit::WebString& label,
int unique_id);
virtual void didClearAutoFillSelection(const WebKit::WebNode& node);
virtual void removeAutocompleteSuggestion(const WebKit::WebString& name,
const WebKit::WebString& value);
virtual void textFieldDidEndEditing(const WebKit::WebInputElement& element);
virtual void textFieldDidChange(const WebKit::WebInputElement& element);
virtual void textFieldDidReceiveKeyDown(
const WebKit::WebInputElement& element,
const WebKit::WebKeyboardEvent& event);
private:
enum AutoFillAction {
AUTOFILL_NONE, // No state set.
AUTOFILL_FILL, // Fill the AutoFill form data.
AUTOFILL_PREVIEW, // Preview the AutoFill form data.
};
// RenderView::Observer implementation.
virtual bool OnMessageReceived(const IPC::Message& message);
virtual void DidFinishDocumentLoad(WebKit::WebFrame* frame);
virtual void FrameDetached(WebKit::WebFrame* frame);
virtual void FrameWillClose(WebKit::WebFrame* frame);
virtual void FrameTranslated(WebKit::WebFrame* frame);
// PageClickListener implementation:
virtual bool InputElementClicked(const WebKit::WebInputElement& element,
bool was_focused,
bool is_focused);
void OnSuggestionsReturned(int query_id,
const std::vector<string16>& values,
const std::vector<string16>& labels,
const std::vector<string16>& icons,
const std::vector<int>& unique_ids);
void OnFormDataFilled(int query_id, const webkit_glue::FormData& form);
// Called in a posted task by textFieldDidChange() to work-around a WebKit bug
// http://bugs.webkit.org/show_bug.cgi?id=16976
void TextFieldDidChangeImpl(const WebKit::WebInputElement& element);
// Shows the autocomplete suggestions for |element|.
// This call is asynchronous and may or may not lead to the showing of a
// suggestion popup (no popup is shown if there are no available suggestions).
// |autofill_on_empty_values| specifies whether suggestions should be shown
// when |element| contains no text.
// |requires_caret_at_end| specifies whether suggestions should be shown when
// the caret is not after the last character in |element|.
// |display_warning_if_disabled| specifies whether a warning should be
// displayed to the user if AutoFill has suggestions available, but cannot
// fill them because it is disabled (e.g. when trying to fill a credit card
// form on a non-secure website).
void ShowSuggestions(const WebKit::WebInputElement& element,
bool autofill_on_empty_values,
bool requires_caret_at_end,
bool display_warning_if_disabled);
// Queries the browser for Autocomplete and AutoFill suggestions for the given
// |node|.
void QueryAutoFillSuggestions(const WebKit::WebNode& node,
bool display_warning_if_disabled);
// Queries the AutoFillManager for form data for the form containing |node|.
// |value| is the current text in the field, and |unique_id| is the selected
// profile's unique ID. |action| specifies whether to Fill or Preview the
// values returned from the AutoFillManager.
void FillAutoFillFormData(const WebKit::WebNode& node,
int unique_id,
AutoFillAction action);
// Scans the given frame for forms and sends them up to the browser.
void SendForms(WebKit::WebFrame* frame);
// Fills |form| and |field| with the FormData and FormField corresponding to
// |node|. Returns true if the data was found; and false otherwise.
bool FindFormAndFieldForNode(
const WebKit::WebNode& node,
webkit_glue::FormData* form,
webkit_glue::FormField* field) WARN_UNUSED_RESULT;
FormManager form_manager_;
PasswordAutocompleteManager* password_autocomplete_manager_;
// The ID of the last request sent for form field AutoFill. Used to ignore
// out of date responses.
int autofill_query_id_;
// The node corresponding to the last request sent for form field AutoFill.
WebKit::WebNode autofill_query_node_;
// The action to take when receiving AutoFill data from the AutoFillManager.
AutoFillAction autofill_action_;
// Should we display a warning if autofill is disabled?
bool display_warning_if_disabled_;
// Was the query node autofilled prior to previewing the form?
bool was_query_node_autofilled_;
// The menu index of the "Clear" menu item.
int suggestions_clear_index_;
// The menu index of the "AutoFill options..." menu item.
int suggestions_options_index_;
ScopedRunnableMethodFactory<AutoFillHelper> method_factory_;
DISALLOW_COPY_AND_ASSIGN(AutoFillHelper);
};
#endif // CHROME_RENDERER_AUTOFILL_HELPER_H_
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