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/Deque.h> 27#include <wtf/Forward.h> 28#include <wtf/ListHashSet.h> 29#include <wtf/Vector.h> 30#include <wtf/text/WTFString.h> 31 32namespace WebCore { 33 34class FormAssociatedElement; 35class FormKeyGenerator; 36class HTMLFormControlElementWithState; 37class HTMLFormElement; 38class SavedFormState; 39 40class FormControlState { 41public: 42 FormControlState() : m_type(TypeSkip) { } 43 explicit FormControlState(const String& value) : m_type(TypeRestore) { m_values.append(value); } 44 static FormControlState deserialize(const Vector<String>& stateVector, size_t& index); 45 FormControlState(const FormControlState& another) : m_type(another.m_type), m_values(another.m_values) { } 46 FormControlState& operator=(const FormControlState&); 47 48 bool isFailure() const { return m_type == TypeFailure; } 49 size_t valueSize() const { return m_values.size(); } 50 const String& operator[](size_t i) const { return m_values[i]; } 51 void append(const String&); 52 void serializeTo(Vector<String>& stateVector) const; 53 54private: 55 enum Type { TypeSkip, TypeRestore, TypeFailure }; 56 explicit FormControlState(Type type) : m_type(type) { } 57 58 Type m_type; 59 Vector<String> m_values; 60}; 61 62inline FormControlState& FormControlState::operator=(const FormControlState& another) 63{ 64 m_type = another.m_type; 65 m_values = another.m_values; 66 return *this; 67} 68 69inline void FormControlState::append(const String& value) 70{ 71 m_type = TypeRestore; 72 m_values.append(value); 73} 74 75class FormController { 76 WTF_MAKE_FAST_ALLOCATED; 77public: 78 static PassOwnPtr<FormController> create() 79 { 80 return adoptPtr(new FormController); 81 } 82 ~FormController(); 83 84 CheckedRadioButtons& checkedRadioButtons() { return m_checkedRadioButtons; } 85 86 void registerFormElementWithState(HTMLFormControlElementWithState*); 87 void unregisterFormElementWithState(HTMLFormControlElementWithState*); 88 // This should be callled only by Document::formElementsState(). 89 Vector<String> formElementsState() const; 90 // This should be callled only by Document::setStateForNewFormElements(). 91 void setStateForNewFormElements(const Vector<String>&); 92 void willDeleteForm(HTMLFormElement*); 93 void restoreControlStateFor(HTMLFormControlElementWithState&); 94 void restoreControlStateIn(HTMLFormElement&); 95 96 static Vector<String> getReferencedFilePaths(const Vector<String>& stateVector); 97 98private: 99 typedef ListHashSet<RefPtr<HTMLFormControlElementWithState>, 64> FormElementListHashSet; 100 typedef HashMap<RefPtr<AtomicStringImpl>, OwnPtr<SavedFormState> > SavedFormStateMap; 101 102 FormController(); 103 static PassOwnPtr<SavedFormStateMap> createSavedFormStateMap(const FormElementListHashSet&); 104 FormControlState takeStateForFormElement(const HTMLFormControlElementWithState&); 105 static void formStatesFromStateVector(const Vector<String>&, SavedFormStateMap&); 106 107 CheckedRadioButtons m_checkedRadioButtons; 108 FormElementListHashSet m_formElementsWithState; 109 SavedFormStateMap m_savedFormStateMap; 110 OwnPtr<FormKeyGenerator> m_formKeyGenerator; 111}; 112 113} // namespace WebCore 114#endif 115