Implement FormManager, a class that manages forms in a RenderView.

BUG=18201
TEST=FormManagerTest
Review URL: http://codereview.chromium.org/577009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@38157 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 84 insertions, 0 deletions

diff --git a/chrome/renderer/form_manager.h b/chrome/renderer/form_manager.h
new file mode 100644
index 0000000..209c93c
--- /dev/null
+++ b/chrome/renderer/form_manager.h
@@ -0,0 +1,84 @@
+// 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_FORM_MANAGER_H_
+#define CHROME_RENDERER_FORM_MANAGER_H_
+
+#include <map>
+#include <vector>
+
+#include "base/string16.h"
+#include "third_party/WebKit/WebKit/chromium/public/WebFormElement.h"
+#include "third_party/WebKit/WebKit/chromium/public/WebInputElement.h"
+#include "webkit/glue/form_data.h"
+
+namespace WebKit {
+class WebFrame;
+}
+
+// Manages the forms in a RenderView.
+class FormManager {
+ public:
+  // A bitfield mask for form requirements.
+  typedef enum {
+    REQUIRE_NONE = 0x0,             // No requirements.
+    REQUIRE_AUTOCOMPLETE = 0x1,     // Require that autocomplete != off.
+    REQUIRE_ELEMENTS_ENABLED = 0x2  // Require that disabled attribute is off.
+  } RequirementsMask;
+
+  FormManager();
+  virtual ~FormManager();
+
+  // Scans the DOM in |frame| extracting and storing forms.
+  void ExtractForms(WebKit::WebFrame* frame);
+
+  // Returns a vector of forms that match |requirements|.
+  void GetForms(std::vector<FormData>* forms, RequirementsMask requirements);
+
+  // Finds the form that contains |input_element| and returns it in |form|.
+  // Returns false if the form is not found.
+  bool FindForm(const WebKit::WebInputElement& input_element, FormData* form);
+
+  // Fills the form represented by |form|.  |form| should have the name set to
+  // the name of the form to fill out, and the number of elements and values
+  // must match the number of stored elements in the form.
+  // TODO(jhawkins): Is matching on name alone good enough?  It's possible to
+  // store multiple forms with the same names from different frames.
+  bool FillForm(const FormData& form);
+
+  // Resets the stored set of forms.
+  void Reset();
+
+ private:
+  // A map of WebInputElements keyed by each element's name.
+  typedef std::map<string16, WebKit::WebInputElement> FormInputElementMap;
+
+  // Stores the WebFormElement and the map of input elements for each form.
+  struct FormElement {
+    WebKit::WebFormElement form_element;
+    FormInputElementMap input_elements;
+  };
+
+  // A map of vectors of FormElements keyed by the WebFrame containing each
+  // form.
+  typedef std::map<WebKit::WebFrame*, std::vector<FormElement*> >
+      WebFrameFormElementMap;
+
+  // Resets the forms for the specified |frame|.
+  void ResetFrame(WebKit::WebFrame* frame);
+
+  // Converts a FormElement to FormData storage.
+  // TODO(jhawkins): Modify FormElement so we don't need |frame|.
+  void FormElementToFormData(WebKit::WebFrame* frame,
+                             const FormElement* form_element,
+                             RequirementsMask requirements,
+                             FormData* form);
+
+  // The map of form elements.
+  WebFrameFormElementMap form_elements_map_;
+
+  DISALLOW_COPY_AND_ASSIGN(FormManager);
+};
+
+#endif  // CHROME_RENDERER_FORM_MANAGER_H_