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* Copyright (C) 2007, 2008, 2009 Apple Inc. All rights reserved.
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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#include "CheckedRadioButtons.h"
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#include "HTMLInputElement.h"
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void CheckedRadioButtons::addButton(HTMLFormControlElement* element)
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// We only want to add radio buttons.
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if (!element->isRadioButton())
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// Without a name, there is no group.
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if (element->name().isEmpty())
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HTMLInputElement* inputElement = static_cast<HTMLInputElement*>(element);
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// We only track checked buttons.
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if (!inputElement->checked())
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if (!m_nameToCheckedRadioButtonMap)
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m_nameToCheckedRadioButtonMap.set(new NameToInputMap);
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pair<NameToInputMap::iterator, bool> result = m_nameToCheckedRadioButtonMap->add(element->name().impl(), inputElement);
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HTMLInputElement* oldCheckedButton = result.first->second;
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if (oldCheckedButton == inputElement)
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result.first->second = inputElement;
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oldCheckedButton->setChecked(false);
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HTMLInputElement* CheckedRadioButtons::checkedButtonForGroup(const AtomicString& name) const
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if (!m_nameToCheckedRadioButtonMap)
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return m_nameToCheckedRadioButtonMap->get(name.impl());
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void CheckedRadioButtons::removeButton(HTMLFormControlElement* element)
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if (element->name().isEmpty() || !m_nameToCheckedRadioButtonMap)
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NameToInputMap::iterator it = m_nameToCheckedRadioButtonMap->find(element->name().impl());
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if (it == m_nameToCheckedRadioButtonMap->end() || it->second != element)
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InputElement* inputElement = toInputElement(element);
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ASSERT_UNUSED(inputElement, inputElement);
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ASSERT(inputElement->isChecked());
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ASSERT(element->isRadioButton());
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m_nameToCheckedRadioButtonMap->remove(it);
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if (m_nameToCheckedRadioButtonMap->isEmpty())
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m_nameToCheckedRadioButtonMap.clear();