1 /*
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 * (C) 1999 Antti Koivisto (koivisto@kde.org)
4 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2010, 2011, 2012 Apple Inc. All rights reserved.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
15 *
16 * You should have received a copy of the GNU Library General Public License
17 * along with this library; see the file COPYING.LIB. If not, write to
18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
20 *
21 */
22
23 #include "config.h"
24 #include "core/html/HTMLFormControlsCollection.h"
25
26 #include "HTMLNames.h"
27 #include "core/html/HTMLFieldSetElement.h"
28 #include "core/html/HTMLFormElement.h"
29 #include "core/html/HTMLImageElement.h"
30
31 namespace WebCore {
32
33 using namespace HTMLNames;
34
35 // Since the collections are to be "live", we have to do the
36 // calculation every time if anything has changed.
37
HTMLFormControlsCollection(Node * ownerNode)38 HTMLFormControlsCollection::HTMLFormControlsCollection(Node* ownerNode)
39 : HTMLCollection(ownerNode, FormControls, OverridesItemAfter)
40 {
41 ASSERT(ownerNode->hasTagName(formTag) || ownerNode->hasTagName(fieldsetTag));
42 ScriptWrappable::init(this);
43 }
44
create(Node * ownerNode,CollectionType)45 PassRefPtr<HTMLFormControlsCollection> HTMLFormControlsCollection::create(Node* ownerNode, CollectionType)
46 {
47 return adoptRef(new HTMLFormControlsCollection(ownerNode));
48 }
49
~HTMLFormControlsCollection()50 HTMLFormControlsCollection::~HTMLFormControlsCollection()
51 {
52 }
53
formControlElements() const54 const Vector<FormAssociatedElement*>& HTMLFormControlsCollection::formControlElements() const
55 {
56 ASSERT(ownerNode());
57 ASSERT(ownerNode()->hasTagName(formTag) || ownerNode()->hasTagName(fieldsetTag));
58 if (ownerNode()->hasTagName(formTag))
59 return toHTMLFormElement(ownerNode())->associatedElements();
60 return toHTMLFieldSetElement(ownerNode())->associatedElements();
61 }
62
formImageElements() const63 const Vector<HTMLImageElement*>& HTMLFormControlsCollection::formImageElements() const
64 {
65 ASSERT(ownerNode());
66 return toHTMLFormElement(ownerNode())->imageElements();
67 }
68
virtualItemAfter(unsigned & offset,Element * previousItem) const69 Element* HTMLFormControlsCollection::virtualItemAfter(unsigned& offset, Element* previousItem) const
70 {
71 const Vector<FormAssociatedElement*>& elementsArray = formControlElements();
72 if (previousItem)
73 offset++;
74 while (offset < elementsArray.size()) {
75 FormAssociatedElement* element = elementsArray[offset];
76 if (element->isEnumeratable())
77 return toHTMLElement(element);
78 offset++;
79 }
80 return 0;
81 }
82
firstNamedItem(const Vector<FormAssociatedElement * > & elementsArray,const Vector<HTMLImageElement * > * imageElementsArray,const QualifiedName & attrName,const String & name)83 static HTMLElement* firstNamedItem(const Vector<FormAssociatedElement*>& elementsArray,
84 const Vector<HTMLImageElement*>* imageElementsArray, const QualifiedName& attrName, const String& name)
85 {
86 ASSERT(attrName == idAttr || attrName == nameAttr);
87
88 for (unsigned i = 0; i < elementsArray.size(); ++i) {
89 HTMLElement* element = toHTMLElement(elementsArray[i]);
90 if (elementsArray[i]->isEnumeratable() && element->fastGetAttribute(attrName) == name)
91 return element;
92 }
93
94 if (!imageElementsArray)
95 return 0;
96
97 for (unsigned i = 0; i < imageElementsArray->size(); ++i) {
98 HTMLImageElement* element = (*imageElementsArray)[i];
99 if (element->fastGetAttribute(attrName) == name)
100 return element;
101 }
102
103 return 0;
104 }
105
namedItem(const AtomicString & name) const106 Node* HTMLFormControlsCollection::namedItem(const AtomicString& name) const
107 {
108 // http://msdn.microsoft.com/workshop/author/dhtml/reference/methods/nameditem.asp
109 // This method first searches for an object with a matching id
110 // attribute. If a match is not found, the method then searches for an
111 // object with a matching name attribute, but only on those elements
112 // that are allowed a name attribute.
113 const Vector<HTMLImageElement*>* imagesElements = ownerNode()->hasTagName(fieldsetTag) ? 0 : &formImageElements();
114 if (HTMLElement* item = firstNamedItem(formControlElements(), imagesElements, idAttr, name))
115 return item;
116
117 return firstNamedItem(formControlElements(), imagesElements, nameAttr, name);
118 }
119
updateNameCache() const120 void HTMLFormControlsCollection::updateNameCache() const
121 {
122 if (hasNameCache())
123 return;
124
125 HashSet<StringImpl*> foundInputElements;
126
127 const Vector<FormAssociatedElement*>& elementsArray = formControlElements();
128
129 for (unsigned i = 0; i < elementsArray.size(); ++i) {
130 FormAssociatedElement* associatedElement = elementsArray[i];
131 if (associatedElement->isEnumeratable()) {
132 HTMLElement* element = toHTMLElement(associatedElement);
133 const AtomicString& idAttrVal = element->getIdAttribute();
134 const AtomicString& nameAttrVal = element->getNameAttribute();
135 if (!idAttrVal.isEmpty()) {
136 appendIdCache(idAttrVal, element);
137 foundInputElements.add(idAttrVal.impl());
138 }
139 if (!nameAttrVal.isEmpty() && idAttrVal != nameAttrVal) {
140 appendNameCache(nameAttrVal, element);
141 foundInputElements.add(nameAttrVal.impl());
142 }
143 }
144 }
145
146 if (ownerNode()->hasTagName(formTag)) {
147 const Vector<HTMLImageElement*>& imageElementsArray = formImageElements();
148 for (unsigned i = 0; i < imageElementsArray.size(); ++i) {
149 HTMLImageElement* element = imageElementsArray[i];
150 const AtomicString& idAttrVal = element->getIdAttribute();
151 const AtomicString& nameAttrVal = element->getNameAttribute();
152 if (!idAttrVal.isEmpty() && !foundInputElements.contains(idAttrVal.impl()))
153 appendIdCache(idAttrVal, element);
154 if (!nameAttrVal.isEmpty() && idAttrVal != nameAttrVal && !foundInputElements.contains(nameAttrVal.impl()))
155 appendNameCache(nameAttrVal, element);
156 }
157 }
158
159 setHasNameCache();
160 }
161
namedGetter(const AtomicString & name,bool & returnValue0Enabled,RefPtr<RadioNodeList> & returnValue0,bool & returnValue1Enabled,RefPtr<Node> & returnValue1)162 void HTMLFormControlsCollection::namedGetter(const AtomicString& name, bool& returnValue0Enabled, RefPtr<RadioNodeList>& returnValue0, bool& returnValue1Enabled, RefPtr<Node>& returnValue1)
163 {
164 Vector<RefPtr<Node> > namedItems;
165 this->namedItems(name, namedItems);
166
167 if (!namedItems.size())
168 return;
169
170 if (namedItems.size() == 1) {
171 returnValue1Enabled = true;
172 returnValue1 = namedItems.at(0);
173 return;
174 }
175
176 returnValue0Enabled = true;
177 returnValue0 = this->ownerNode()->radioNodeList(name);
178 }
179
180 }
181