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// 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.
#ifndef COMPONENTS_AUTOFILL_CONTENT_RENDERER_FORM_CACHE_H_
#define COMPONENTS_AUTOFILL_CONTENT_RENDERER_FORM_CACHE_H_
#include <stddef.h>
#include <map>
#include <set>
#include <vector>
#include "base/macros.h"
#include "base/strings/string16.h"
#include "components/autofill/core/common/form_data.h"
namespace blink {
class WebDocument;
class WebElement;
class WebElementCollection;
class WebFormControlElement;
class WebFrame;
class WebInputElement;
class WebSelectElement;
}
namespace autofill {
struct FormDataPredictions;
// Manages the forms in a single RenderFrame.
class FormCache {
public:
explicit FormCache(const blink::WebFrame& frame);
~FormCache();
// Scans the DOM in |frame_| extracting and storing forms that have not been
// seen before. Returns the extracted forms.
std::vector<FormData> ExtractNewForms();
// Resets the forms.
void Reset();
// Clears the values of all input elements in the form that contains
// |element|. Returns false if the form is not found.
bool ClearFormWithElement(const blink::WebFormControlElement& element);
// For each field in the |form|, sets the title to include the field's
// heuristic type, server type, and signature; as well as the form's signature
// and the experiment id for the server predictions.
bool ShowPredictions(const FormDataPredictions& form);
private:
// Scans |control_elements| and returns the number of editable elements.
// Also remembers the initial <select> and <input> element states, and
// logs warning messages for deprecated attribute if
// |log_deprecation_messages| is set.
size_t ScanFormControlElements(
const std::vector<blink::WebFormControlElement>& control_elements,
bool log_deprecation_messages);
// Saves initial state of checkbox and select elements.
void SaveInitialValues(
const std::vector<blink::WebFormControlElement>& control_elements);
// The frame this FormCache is associated with.
const blink::WebFrame& frame_;
// The cached forms. Used to prevent re-extraction of forms.
std::set<FormData> parsed_forms_;
// The synthetic FormData is for all the fieldsets in the document without a
// form owner.
FormData synthetic_form_;
// The cached initial values for <select> elements.
std::map<const blink::WebSelectElement, base::string16>
initial_select_values_;
// The cached initial values for checkable <input> elements.
std::map<const blink::WebInputElement, bool> initial_checked_state_;
DISALLOW_COPY_AND_ASSIGN(FormCache);
};
} // namespace autofill
#endif // COMPONENTS_AUTOFILL_CONTENT_RENDERER_FORM_CACHE_H_
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