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 "core/html/HTMLOutputElement.h" 33 34 #include "bindings/v8/ExceptionStatePlaceholder.h" 35 #include "core/HTMLNames.h" 36 37 namespace WebCore { 38 39 inline HTMLOutputElement::HTMLOutputElement(Document& document, HTMLFormElement* form) 40 : HTMLFormControlElement(HTMLNames::outputTag, document, form) 41 , m_isDefaultValueMode(true) 42 , m_defaultValue("") 43 , m_tokens(DOMSettableTokenList::create()) 44 { 45 ScriptWrappable::init(this); 46 } 47 48 PassRefPtrWillBeRawPtr<HTMLOutputElement> HTMLOutputElement::create(Document& document, HTMLFormElement* form) 49 { 50 return adoptRefWillBeNoop(new HTMLOutputElement(document, form)); 51 } 52 53 const AtomicString& HTMLOutputElement::formControlType() const 54 { 55 DEFINE_STATIC_LOCAL(const AtomicString, output, ("output", AtomicString::ConstructFromLiteral)); 56 return output; 57 } 58 59 bool HTMLOutputElement::supportsFocus() const 60 { 61 return HTMLElement::supportsFocus(); 62 } 63 64 void HTMLOutputElement::parseAttribute(const QualifiedName& name, const AtomicString& value) 65 { 66 if (name == HTMLNames::forAttr) 67 setFor(value); 68 else 69 HTMLFormControlElement::parseAttribute(name, value); 70 } 71 72 DOMSettableTokenList* HTMLOutputElement::htmlFor() const 73 { 74 return m_tokens.get(); 75 } 76 77 void HTMLOutputElement::setFor(const AtomicString& value) 78 { 79 m_tokens->setValue(value); 80 } 81 82 void HTMLOutputElement::childrenChanged(bool createdByParser, Node* beforeChange, Node* afterChange, int childCountDelta) 83 { 84 HTMLFormControlElement::childrenChanged(createdByParser, beforeChange, afterChange, childCountDelta); 85 86 if (m_isDefaultValueMode) 87 m_defaultValue = textContent(); 88 } 89 90 void HTMLOutputElement::resetImpl() 91 { 92 // The reset algorithm for output elements is to set the element's 93 // value mode flag to "default" and then to set the element's textContent 94 // attribute to the default value. 95 if (m_defaultValue == value()) 96 return; 97 setTextContent(m_defaultValue); 98 m_isDefaultValueMode = true; 99 } 100 101 String HTMLOutputElement::value() const 102 { 103 return textContent(); 104 } 105 106 void HTMLOutputElement::setValue(const String& value) 107 { 108 // The value mode flag set to "value" when the value attribute is set. 109 m_isDefaultValueMode = false; 110 if (value == this->value()) 111 return; 112 setTextContent(value); 113 } 114 115 String HTMLOutputElement::defaultValue() const 116 { 117 return m_defaultValue; 118 } 119 120 void HTMLOutputElement::setDefaultValue(const String& value) 121 { 122 if (m_defaultValue == value) 123 return; 124 m_defaultValue = value; 125 // The spec requires the value attribute set to the default value 126 // when the element's value mode flag to "default". 127 if (m_isDefaultValueMode) 128 setTextContent(value); 129 } 130 131 132 void HTMLOutputElement::trace(Visitor* visitor) 133 { 134 visitor->trace(m_tokens); 135 HTMLFormControlElement::trace(visitor); 136 } 137 138 } // namespace 139