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 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 48 PassRefPtr<HTMLOutputElement> HTMLOutputElement::create(const QualifiedName& tagName, Document* document, HTMLFormElement* form) 49 { 50 return adoptRef(new HTMLOutputElement(tagName, document, form)); 51 } 52 53 const AtomicString& HTMLOutputElement::formControlType() const 54 { 55 DEFINE_STATIC_LOCAL(const AtomicString, output, ("output")); 56 return output; 57 } 58 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 67 DOMSettableTokenList* HTMLOutputElement::htmlFor() const 68 { 69 return m_tokens.get(); 70 } 71 72 void HTMLOutputElement::setFor(const String& value) 73 { 74 m_tokens->setValue(value); 75 } 76 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 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 } 99 100 String HTMLOutputElement::value() const 101 { 102 return textContent(); 103 } 104 105 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 } 113 114 String HTMLOutputElement::defaultValue() const 115 { 116 return m_defaultValue; 117 } 118 119 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 } 129 130 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