1/* 2 * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved. 3 * Copyright (C) 2010, 2011, 2012 Google Inc. All rights reserved. 4 * 5 * This library is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU Library General Public 7 * License as published by the Free Software Foundation; either 8 * version 2 of the License, or (at your option) any later version. 9 * 10 * This library is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * Library General Public License for more details. 14 * 15 * You should have received a copy of the GNU Library General Public License 16 * along with this library; see the file COPYING.LIB. If not, write to 17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 18 * Boston, MA 02110-1301, USA. 19 * 20 */ 21 22#ifndef FormController_h 23#define FormController_h 24 25#include "CheckedRadioButtons.h" 26#include <wtf/Forward.h> 27#include <wtf/ListHashSet.h> 28#include <wtf/Vector.h> 29#include <wtf/text/WTFString.h> 30 31namespace WebCore { 32 33class FormAssociatedElement; 34class FormKeyGenerator; 35class HTMLFormControlElementWithState; 36class HTMLFormElement; 37class SavedFormState; 38 39class FormControlState { 40public: 41 FormControlState() : m_type(TypeSkip) { } 42 explicit FormControlState(const String& value) : m_type(TypeRestore) { m_values.append(value); } 43 static FormControlState deserialize(const Vector<String>& stateVector, size_t& index); 44 FormControlState(const FormControlState& another) : m_type(another.m_type), m_values(another.m_values) { } 45 FormControlState& operator=(const FormControlState&); 46 47 bool isFailure() const { return m_type == TypeFailure; } 48 size_t valueSize() const { return m_values.size(); } 49 const String& operator[](size_t i) const { return m_values[i]; } 50 void append(const String&); 51 void serializeTo(Vector<String>& stateVector) const; 52 53private: 54 enum Type { TypeSkip, TypeRestore, TypeFailure }; 55 explicit FormControlState(Type type) : m_type(type) { } 56 57 Type m_type; 58 Vector<String> m_values; 59}; 60 61inline FormControlState& FormControlState::operator=(const FormControlState& another) 62{ 63 m_type = another.m_type; 64 m_values = another.m_values; 65 return *this; 66} 67 68inline void FormControlState::append(const String& value) 69{ 70 m_type = TypeRestore; 71 m_values.append(value); 72} 73 74class FormController { 75 WTF_MAKE_FAST_ALLOCATED; 76public: 77 FormController(); 78 ~FormController(); 79 80 CheckedRadioButtons& checkedRadioButtons() { return m_checkedRadioButtons; } 81 82 void registerFormElementWithState(HTMLFormControlElementWithState*); 83 void unregisterFormElementWithState(HTMLFormControlElementWithState*); 84 85 unsigned formElementsCharacterCount() const; 86 87 // This should be callled only by Document::formElementsState(). 88 Vector<String> formElementsState() const; 89 // This should be callled only by Document::setStateForNewFormElements(). 90 void setStateForNewFormElements(const Vector<String>&); 91 void willDeleteForm(HTMLFormElement*); 92 void restoreControlStateFor(HTMLFormControlElementWithState&); 93 void restoreControlStateIn(HTMLFormElement&); 94 95 static Vector<String> getReferencedFilePaths(const Vector<String>& stateVector); 96 97private: 98 typedef ListHashSet<RefPtr<HTMLFormControlElementWithState>, 64> FormElementListHashSet; 99 typedef HashMap<RefPtr<AtomicStringImpl>, std::unique_ptr<SavedFormState>> SavedFormStateMap; 100 101 static std::unique_ptr<SavedFormStateMap> createSavedFormStateMap(const FormElementListHashSet&); 102 FormControlState takeStateForFormElement(const HTMLFormControlElementWithState&); 103 static void formStatesFromStateVector(const Vector<String>&, SavedFormStateMap&); 104 105 CheckedRadioButtons m_checkedRadioButtons; 106 FormElementListHashSet m_formElementsWithState; 107 SavedFormStateMap m_savedFormStateMap; 108 std::unique_ptr<FormKeyGenerator> m_formKeyGenerator; 109}; 110 111} // namespace WebCore 112#endif 113