components/autofill/content/renderer/form_cache.h

   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 #ifndef COMPONENTS_AUTOFILL_CONTENT_RENDERER_FORM_CACHE_H_
   6 #define COMPONENTS_AUTOFILL_CONTENT_RENDERER_FORM_CACHE_H_
   7
   8 #include <map>
   9 #include <set>
  10 #include <vector>
  11
  12 #include "base/strings/string16.h"
  13
  14 namespace blink {
  15 class WebDocument;
  16 class WebFormControlElement;
  17 class WebFrame;
  18 class WebInputElement;
  19 class WebSelectElement;
  20 }
  21
  22 namespace autofill {
  23
  24 struct FormData;
  25 struct FormDataPredictions;
  26
  27 // Manages the forms in a RenderView.
  28 class FormCache {
  29  public:
  30   FormCache();
  31   ~FormCache();
  32
  33   // Scans the DOM in |frame| extracting and storing forms that have not been
  34   // seen before. Fills |forms| with extracted forms.
  35   void ExtractNewForms(const blink::WebFrame& frame,
  36                        std::vector<FormData>* forms);
  37
  38   // Resets the forms for the specified |frame|.
  39   void ResetFrame(const blink::WebFrame& frame);
  40
  41   // Clears the values of all input elements in the form that contains
  42   // |element|.  Returns false if the form is not found.
  43   bool ClearFormWithElement(const blink::WebFormControlElement& element);
  44
  45   // For each field in the |form|, sets the field's placeholder text to the
  46   // field's overall predicted type.  Also sets the title to include the field's
  47   // heuristic type, server type, and signature; as well as the form's signature
  48   // and the experiment id for the server predictions.
  49   bool ShowPredictions(const FormDataPredictions& form);
  50
  51  private:
  52   // The cached web frames.
  53   std::set<blink::WebDocument> web_documents_;
  54
  55   // The cached forms per frame. Used to prevent re-extraction of forms.
  56   std::map<const blink::WebFrame*, std::set<FormData> > parsed_forms_;
  57
  58   // The cached initial values for <select> elements.
  59   std::map<const blink::WebSelectElement, base::string16>
  60       initial_select_values_;
  61
  62   // The cached initial values for checkable <input> elements.
  63   std::map<const blink::WebInputElement, bool> initial_checked_state_;
  64
  65   DISALLOW_COPY_AND_ASSIGN(FormCache);
  66 };
  67
  68 }  // namespace autofill
  69
  70 #endif  // COMPONENTS_AUTOFILL_CONTENT_RENDERER_FORM_CACHE_H_