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 "HTMLNames.h" 35#include "bindings/v8/ExceptionStatePlaceholder.h" 36 37namespace WebCore { 38 39inline HTMLOutputElement::HTMLOutputElement(Document& document, HTMLFormElement* form) 40 : HTMLFormControlElement(HTMLNames::outputTag, document, form) 41 , m_isDefaultValueMode(true) 42 , m_isSetTextContentInProgress(false) 43 , m_defaultValue("") 44 , m_tokens(DOMSettableTokenList::create()) 45{ 46 ScriptWrappable::init(this); 47} 48 49PassRefPtr<HTMLOutputElement> HTMLOutputElement::create(Document& document, HTMLFormElement* form) 50{ 51 return adoptRef(new HTMLOutputElement(document, form)); 52} 53 54const AtomicString& HTMLOutputElement::formControlType() const 55{ 56 DEFINE_STATIC_LOCAL(const AtomicString, output, ("output", AtomicString::ConstructFromLiteral)); 57 return output; 58} 59 60bool HTMLOutputElement::supportsFocus() const 61{ 62 return HTMLElement::supportsFocus(); 63} 64 65void HTMLOutputElement::parseAttribute(const QualifiedName& name, const AtomicString& value) 66{ 67 if (name == HTMLNames::forAttr) 68 setFor(value); 69 else 70 HTMLFormControlElement::parseAttribute(name, value); 71} 72 73DOMSettableTokenList* HTMLOutputElement::htmlFor() const 74{ 75 return m_tokens.get(); 76} 77 78void HTMLOutputElement::setFor(const String& value) 79{ 80 m_tokens->setValue(value); 81} 82 83void HTMLOutputElement::childrenChanged(bool createdByParser, Node* beforeChange, Node* afterChange, int childCountDelta) 84{ 85 HTMLFormControlElement::childrenChanged(createdByParser, beforeChange, afterChange, childCountDelta); 86 87 if (createdByParser || m_isSetTextContentInProgress) { 88 m_isSetTextContentInProgress = false; 89 return; 90 } 91 92 if (m_isDefaultValueMode) 93 m_defaultValue = textContent(); 94} 95 96void HTMLOutputElement::resetImpl() 97{ 98 // The reset algorithm for output elements is to set the element's 99 // value mode flag to "default" and then to set the element's textContent 100 // attribute to the default value. 101 m_isDefaultValueMode = true; 102 if (m_defaultValue == value()) 103 return; 104 setTextContentInternal(m_defaultValue); 105} 106 107String HTMLOutputElement::value() const 108{ 109 return textContent(); 110} 111 112void HTMLOutputElement::setValue(const String& value) 113{ 114 // The value mode flag set to "value" when the value attribute is set. 115 m_isDefaultValueMode = false; 116 if (value == this->value()) 117 return; 118 setTextContentInternal(value); 119} 120 121String HTMLOutputElement::defaultValue() const 122{ 123 return m_defaultValue; 124} 125 126void HTMLOutputElement::setDefaultValue(const String& value) 127{ 128 if (m_defaultValue == value) 129 return; 130 m_defaultValue = value; 131 // The spec requires the value attribute set to the default value 132 // when the element's value mode flag to "default". 133 if (m_isDefaultValueMode) 134 setTextContentInternal(value); 135} 136 137void HTMLOutputElement::setTextContentInternal(const String& value) 138{ 139 ASSERT(!m_isSetTextContentInProgress); 140 m_isSetTextContentInProgress = true; 141 setTextContent(value); 142} 143 144} // namespace 145