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| 1 /* | |
| 2 * Copyright (C) 2007, 2008, 2009 Apple Inc. All rights reserved. | |
| 3 * | |
| 4 * This library is free software; you can redistribute it and/or | |
| 5 * modify it under the terms of the GNU Library General Public | |
| 6 * License as published by the Free Software Foundation; either | |
| 7 * version 2 of the License, or (at your option) any later version. | |
| 8 * | |
| 9 * This library is distributed in the hope that it will be useful, | |
| 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 12 * Library General Public License for more details. | |
| 13 * | |
| 14 * You should have received a copy of the GNU Library General Public License | |
| 15 * along with this library; see the file COPYING.LIB. If not, write to | |
| 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
| 17 * Boston, MA 02110-1301, USA. | |
| 18 * | |
| 19 */ | |
| 20 | |
| 21 #include "config.h" | |
| 22 #include "core/dom/CheckedRadioButtons.h" | |
| 23 | |
| 24 #include "core/html/HTMLInputElement.h" | |
| 25 #include "wtf/HashSet.h" | |
| 26 | |
| 27 namespace WebCore { | |
| 28 | |
| 29 class RadioButtonGroup { | |
| 30 WTF_MAKE_FAST_ALLOCATED; | |
| 31 public: | |
| 32 static PassOwnPtr<RadioButtonGroup> create(); | |
| 33 bool isEmpty() const { return m_members.isEmpty(); } | |
| 34 bool isRequired() const { return m_requiredCount; } | |
| 35 HTMLInputElement* checkedButton() const { return m_checkedButton; } | |
| 36 void add(HTMLInputElement*); | |
| 37 void updateCheckedState(HTMLInputElement*); | |
| 38 void requiredAttributeChanged(HTMLInputElement*); | |
| 39 void remove(HTMLInputElement*); | |
| 40 bool contains(HTMLInputElement*) const; | |
| 41 | |
| 42 private: | |
| 43 RadioButtonGroup(); | |
| 44 void setNeedsValidityCheckForAllButtons(); | |
| 45 bool isValid() const; | |
| 46 void setCheckedButton(HTMLInputElement*); | |
| 47 | |
| 48 HashSet<HTMLInputElement*> m_members; | |
| 49 HTMLInputElement* m_checkedButton; | |
| 50 size_t m_requiredCount; | |
| 51 }; | |
| 52 | |
| 53 RadioButtonGroup::RadioButtonGroup() | |
| 54 : m_checkedButton(0) | |
| 55 , m_requiredCount(0) | |
| 56 { | |
| 57 } | |
| 58 | |
| 59 PassOwnPtr<RadioButtonGroup> RadioButtonGroup::create() | |
| 60 { | |
| 61 return adoptPtr(new RadioButtonGroup); | |
| 62 } | |
| 63 | |
| 64 inline bool RadioButtonGroup::isValid() const | |
| 65 { | |
| 66 return !isRequired() || m_checkedButton; | |
| 67 } | |
| 68 | |
| 69 void RadioButtonGroup::setCheckedButton(HTMLInputElement* button) | |
| 70 { | |
| 71 HTMLInputElement* oldCheckedButton = m_checkedButton; | |
| 72 if (oldCheckedButton == button) | |
| 73 return; | |
| 74 m_checkedButton = button; | |
| 75 if (oldCheckedButton) | |
| 76 oldCheckedButton->setChecked(false); | |
| 77 } | |
| 78 | |
| 79 void RadioButtonGroup::add(HTMLInputElement* button) | |
| 80 { | |
| 81 ASSERT(button->isRadioButton()); | |
| 82 if (!m_members.add(button).isNewEntry) | |
| 83 return; | |
| 84 bool groupWasValid = isValid(); | |
| 85 if (button->isRequired()) | |
| 86 ++m_requiredCount; | |
| 87 if (button->checked()) | |
| 88 setCheckedButton(button); | |
| 89 | |
| 90 bool groupIsValid = isValid(); | |
| 91 if (groupWasValid != groupIsValid) | |
| 92 setNeedsValidityCheckForAllButtons(); | |
| 93 else if (!groupIsValid) { | |
| 94 // A radio button not in a group is always valid. We need to make it | |
| 95 // invalid only if the group is invalid. | |
| 96 button->setNeedsValidityCheck(); | |
| 97 } | |
| 98 } | |
| 99 | |
| 100 void RadioButtonGroup::updateCheckedState(HTMLInputElement* button) | |
| 101 { | |
| 102 ASSERT(button->isRadioButton()); | |
| 103 ASSERT(m_members.contains(button)); | |
| 104 bool wasValid = isValid(); | |
| 105 if (button->checked()) | |
| 106 setCheckedButton(button); | |
| 107 else { | |
| 108 if (m_checkedButton == button) | |
| 109 m_checkedButton = 0; | |
| 110 } | |
| 111 if (wasValid != isValid()) | |
| 112 setNeedsValidityCheckForAllButtons(); | |
| 113 } | |
| 114 | |
| 115 void RadioButtonGroup::requiredAttributeChanged(HTMLInputElement* button) | |
| 116 { | |
| 117 ASSERT(button->isRadioButton()); | |
| 118 ASSERT(m_members.contains(button)); | |
| 119 bool wasValid = isValid(); | |
| 120 if (button->isRequired()) | |
| 121 ++m_requiredCount; | |
| 122 else { | |
| 123 ASSERT(m_requiredCount); | |
| 124 --m_requiredCount; | |
| 125 } | |
| 126 if (wasValid != isValid()) | |
| 127 setNeedsValidityCheckForAllButtons(); | |
| 128 } | |
| 129 | |
| 130 void RadioButtonGroup::remove(HTMLInputElement* button) | |
| 131 { | |
| 132 ASSERT(button->isRadioButton()); | |
| 133 HashSet<HTMLInputElement*>::iterator it = m_members.find(button); | |
| 134 if (it == m_members.end()) | |
| 135 return; | |
| 136 bool wasValid = isValid(); | |
| 137 m_members.remove(it); | |
| 138 if (button->isRequired()) { | |
| 139 ASSERT(m_requiredCount); | |
| 140 --m_requiredCount; | |
| 141 } | |
| 142 if (m_checkedButton == button) | |
| 143 m_checkedButton = 0; | |
| 144 | |
| 145 if (m_members.isEmpty()) { | |
| 146 ASSERT(!m_requiredCount); | |
| 147 ASSERT(!m_checkedButton); | |
| 148 } else if (wasValid != isValid()) | |
| 149 setNeedsValidityCheckForAllButtons(); | |
| 150 if (!wasValid) { | |
| 151 // A radio button not in a group is always valid. We need to make it | |
| 152 // valid only if the group was invalid. | |
| 153 button->setNeedsValidityCheck(); | |
| 154 } | |
| 155 } | |
| 156 | |
| 157 void RadioButtonGroup::setNeedsValidityCheckForAllButtons() | |
| 158 { | |
| 159 typedef HashSet<HTMLInputElement*>::const_iterator Iterator; | |
| 160 Iterator end = m_members.end(); | |
| 161 for (Iterator it = m_members.begin(); it != end; ++it) { | |
| 162 HTMLInputElement* button = *it; | |
| 163 ASSERT(button->isRadioButton()); | |
| 164 button->setNeedsValidityCheck(); | |
| 165 } | |
| 166 } | |
| 167 | |
| 168 bool RadioButtonGroup::contains(HTMLInputElement* button) const | |
| 169 { | |
| 170 return m_members.contains(button); | |
| 171 } | |
| 172 | |
| 173 // ---------------------------------------------------------------- | |
| 174 | |
| 175 // Explicity define empty constructor and destructor in order to prevent the | |
| 176 // compiler from generating them as inlines. So we don't need to to define | |
| 177 // RadioButtonGroup in the header. | |
| 178 CheckedRadioButtons::CheckedRadioButtons() | |
| 179 { | |
| 180 } | |
| 181 | |
| 182 CheckedRadioButtons::~CheckedRadioButtons() | |
| 183 { | |
| 184 } | |
| 185 | |
| 186 void CheckedRadioButtons::addButton(HTMLInputElement* element) | |
| 187 { | |
| 188 ASSERT(element->isRadioButton()); | |
| 189 if (element->name().isEmpty()) | |
| 190 return; | |
| 191 | |
| 192 if (!m_nameToGroupMap) | |
| 193 m_nameToGroupMap = adoptPtr(new NameToGroupMap); | |
| 194 | |
| 195 OwnPtr<RadioButtonGroup>& group = m_nameToGroupMap->add(element->name().impl
(), PassOwnPtr<RadioButtonGroup>()).iterator->value; | |
| 196 if (!group) | |
| 197 group = RadioButtonGroup::create(); | |
| 198 group->add(element); | |
| 199 } | |
| 200 | |
| 201 void CheckedRadioButtons::updateCheckedState(HTMLInputElement* element) | |
| 202 { | |
| 203 ASSERT(element->isRadioButton()); | |
| 204 if (element->name().isEmpty()) | |
| 205 return; | |
| 206 ASSERT(m_nameToGroupMap); | |
| 207 if (!m_nameToGroupMap) | |
| 208 return; | |
| 209 RadioButtonGroup* group = m_nameToGroupMap->get(element->name().impl()); | |
| 210 ASSERT(group); | |
| 211 group->updateCheckedState(element); | |
| 212 } | |
| 213 | |
| 214 void CheckedRadioButtons::requiredAttributeChanged(HTMLInputElement* element) | |
| 215 { | |
| 216 ASSERT(element->isRadioButton()); | |
| 217 if (element->name().isEmpty()) | |
| 218 return; | |
| 219 ASSERT(m_nameToGroupMap); | |
| 220 if (!m_nameToGroupMap) | |
| 221 return; | |
| 222 RadioButtonGroup* group = m_nameToGroupMap->get(element->name().impl()); | |
| 223 ASSERT(group); | |
| 224 group->requiredAttributeChanged(element); | |
| 225 } | |
| 226 | |
| 227 HTMLInputElement* CheckedRadioButtons::checkedButtonForGroup(const AtomicString&
name) const | |
| 228 { | |
| 229 if (!m_nameToGroupMap) | |
| 230 return 0; | |
| 231 RadioButtonGroup* group = m_nameToGroupMap->get(name.impl()); | |
| 232 return group ? group->checkedButton() : 0; | |
| 233 } | |
| 234 | |
| 235 bool CheckedRadioButtons::isInRequiredGroup(HTMLInputElement* element) const | |
| 236 { | |
| 237 ASSERT(element->isRadioButton()); | |
| 238 if (element->name().isEmpty()) | |
| 239 return false; | |
| 240 if (!m_nameToGroupMap) | |
| 241 return false; | |
| 242 RadioButtonGroup* group = m_nameToGroupMap->get(element->name().impl()); | |
| 243 return group && group->isRequired() && group->contains(element); | |
| 244 } | |
| 245 | |
| 246 void CheckedRadioButtons::removeButton(HTMLInputElement* element) | |
| 247 { | |
| 248 ASSERT(element->isRadioButton()); | |
| 249 if (element->name().isEmpty()) | |
| 250 return; | |
| 251 if (!m_nameToGroupMap) | |
| 252 return; | |
| 253 | |
| 254 NameToGroupMap::iterator it = m_nameToGroupMap->find(element->name().impl())
; | |
| 255 if (it == m_nameToGroupMap->end()) | |
| 256 return; | |
| 257 it->value->remove(element); | |
| 258 if (it->value->isEmpty()) { | |
| 259 // FIXME: We may skip deallocating the empty RadioButtonGroup for | |
| 260 // performance improvement. If we do so, we need to change the key type | |
| 261 // of m_nameToGroupMap from StringImpl* to AtomicString. | |
| 262 m_nameToGroupMap->remove(it); | |
| 263 if (m_nameToGroupMap->isEmpty()) | |
| 264 m_nameToGroupMap.clear(); | |
| 265 } | |
| 266 } | |
| 267 | |
| 268 } // namespace | |
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Chromium Code Reviews
Issue 24246011:
Move form-related 78 files to core/html/forms/. (Closed)
Base URL: svn://svn.chromium.org/blink/trunk