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/*
* Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
* Copyright (C) 2010, 2011, 2012 Google Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef FormController_h
#define FormController_h
#include "core/html/forms/RadioButtonGroupScope.h"
#include "platform/heap/Handle.h"
#include "wtf/Forward.h"
#include "wtf/ListHashSet.h"
#include "wtf/Vector.h"
#include "wtf/text/AtomicStringHash.h"
namespace WebCore {
class FormAssociatedElement;
class FormKeyGenerator;
class HTMLFormControlElementWithState;
class HTMLFormElement;
class SavedFormState;
class FormControlState {
public:
FormControlState() : m_type(TypeSkip) { }
explicit FormControlState(const String& value) : m_type(TypeRestore) { m_values.append(value); }
static FormControlState deserialize(const Vector<String>& stateVector, size_t& index);
FormControlState(const FormControlState& another) : m_type(another.m_type), m_values(another.m_values) { }
FormControlState& operator=(const FormControlState&);
bool isFailure() const { return m_type == TypeFailure; }
size_t valueSize() const { return m_values.size(); }
const String& operator[](size_t i) const { return m_values[i]; }
void append(const String&);
void serializeTo(Vector<String>& stateVector) const;
private:
enum Type { TypeSkip, TypeRestore, TypeFailure };
explicit FormControlState(Type type) : m_type(type) { }
Type m_type;
Vector<String> m_values;
};
inline FormControlState& FormControlState::operator=(const FormControlState& another)
{
m_type = another.m_type;
m_values = another.m_values;
return *this;
}
inline void FormControlState::append(const String& value)
{
m_type = TypeRestore;
m_values.append(value);
}
typedef HashMap<AtomicString, OwnPtr<SavedFormState> > SavedFormStateMap;
class DocumentState FINAL : public RefCountedWillBeGarbageCollected<DocumentState> {
DECLARE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(DocumentState);
public:
static PassRefPtrWillBeRawPtr<DocumentState> create();
void trace(Visitor*);
void addControl(HTMLFormControlElementWithState*);
void removeControl(HTMLFormControlElementWithState*);
Vector<String> toStateVector();
private:
typedef WillBeHeapListHashSet<RefPtrWillBeMember<HTMLFormControlElementWithState>, 64> FormElementListHashSet;
FormElementListHashSet m_formControls;
};
class FormController FINAL : public NoBaseWillBeGarbageCollectedFinalized<FormController> {
WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
public:
static PassOwnPtrWillBeRawPtr<FormController> create()
{
return adoptPtrWillBeNoop(new FormController);
}
~FormController();
void trace(Visitor*);
RadioButtonGroupScope& radioButtonGroupScope() { return m_radioButtonGroupScope; }
void registerStatefulFormControl(HTMLFormControlElementWithState&);
void unregisterStatefulFormControl(HTMLFormControlElementWithState&);
// This should be callled only by Document::formElementsState().
DocumentState* formElementsState() const;
// This should be callled only by Document::setStateForNewFormElements().
void setStateForNewFormElements(const Vector<String>&);
void willDeleteForm(HTMLFormElement*);
void restoreControlStateFor(HTMLFormControlElementWithState&);
void restoreControlStateIn(HTMLFormElement&);
static Vector<String> getReferencedFilePaths(const Vector<String>& stateVector);
private:
FormController();
FormControlState takeStateForFormElement(const HTMLFormControlElementWithState&);
static void formStatesFromStateVector(const Vector<String>&, SavedFormStateMap&);
RadioButtonGroupScope m_radioButtonGroupScope;
RefPtrWillBeMember<DocumentState> m_documentState;
SavedFormStateMap m_savedFormStateMap;
OwnPtrWillBeMember<FormKeyGenerator> m_formKeyGenerator;
};
} // namespace WebCore
#endif
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