1 /*
2 * Copyright (c) 2010 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 * * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include "config.h"
32 #include "HTMLOutputElement.h"
33
34 #include "HTMLFormElement.h"
35 #include "HTMLNames.h"
36
37 namespace WebCore {
38
HTMLOutputElement(const QualifiedName & tagName,Document * document,HTMLFormElement * form)39 inline HTMLOutputElement::HTMLOutputElement(const QualifiedName& tagName, Document* document, HTMLFormElement* form)
40 : HTMLFormControlElement(tagName, document, form)
41 , m_isDefaultValueMode(true)
42 , m_isSetTextContentInProgress(false)
43 , m_defaultValue("")
44 , m_tokens(DOMSettableTokenList::create())
45 {
46 }
47
create(const QualifiedName & tagName,Document * document,HTMLFormElement * form)48 PassRefPtr<HTMLOutputElement> HTMLOutputElement::create(const QualifiedName& tagName, Document* document, HTMLFormElement* form)
49 {
50 return adoptRef(new HTMLOutputElement(tagName, document, form));
51 }
52
formControlType() const53 const AtomicString& HTMLOutputElement::formControlType() const
54 {
55 DEFINE_STATIC_LOCAL(const AtomicString, output, ("output"));
56 return output;
57 }
58
parseMappedAttribute(Attribute * attr)59 void HTMLOutputElement::parseMappedAttribute(Attribute* attr)
60 {
61 if (attr->name() == HTMLNames::forAttr)
62 setFor(attr->value());
63 else
64 HTMLFormControlElement::parseMappedAttribute(attr);
65 }
66
htmlFor() const67 DOMSettableTokenList* HTMLOutputElement::htmlFor() const
68 {
69 return m_tokens.get();
70 }
71
setFor(const String & value)72 void HTMLOutputElement::setFor(const String& value)
73 {
74 m_tokens->setValue(value);
75 }
76
childrenChanged(bool createdByParser,Node * beforeChange,Node * afterChange,int childCountDelta)77 void HTMLOutputElement::childrenChanged(bool createdByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
78 {
79 if (createdByParser || m_isSetTextContentInProgress) {
80 m_isSetTextContentInProgress = false;
81 return;
82 }
83
84 if (m_isDefaultValueMode)
85 m_defaultValue = textContent();
86 HTMLFormControlElement::childrenChanged(createdByParser, beforeChange, afterChange, childCountDelta);
87 }
88
reset()89 void HTMLOutputElement::reset()
90 {
91 // The reset algorithm for output elements is to set the element's
92 // value mode flag to "default" and then to set the element's textContent
93 // attribute to the default value.
94 m_isDefaultValueMode = true;
95 if (m_defaultValue == value())
96 return;
97 setTextContentInternal(m_defaultValue);
98 }
99
value() const100 String HTMLOutputElement::value() const
101 {
102 return textContent();
103 }
104
setValue(const String & value)105 void HTMLOutputElement::setValue(const String& value)
106 {
107 // The value mode flag set to "value" when the value attribute is set.
108 m_isDefaultValueMode = false;
109 if (value == this->value())
110 return;
111 setTextContentInternal(value);
112 }
113
defaultValue() const114 String HTMLOutputElement::defaultValue() const
115 {
116 return m_defaultValue;
117 }
118
setDefaultValue(const String & value)119 void HTMLOutputElement::setDefaultValue(const String& value)
120 {
121 if (m_defaultValue == value)
122 return;
123 m_defaultValue = value;
124 // The spec requires the value attribute set to the default value
125 // when the element's value mode flag to "default".
126 if (m_isDefaultValueMode)
127 setTextContentInternal(value);
128 }
129
setTextContentInternal(const String & value)130 void HTMLOutputElement::setTextContentInternal(const String& value)
131 {
132 ASSERT(!m_isSetTextContentInProgress);
133 ExceptionCode ec;
134 m_isSetTextContentInProgress = true;
135 setTextContent(value, ec);
136 }
137
138 } // namespace
139