1 /* 2 * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Library General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Library General Public License for more details. 13 * 14 * You should have received a copy of the GNU Library General Public License 15 * along with this library; see the file COPYING.LIB. If not, write to 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 17 * Boston, MA 02110-1301, USA. 18 * 19 */ 20 21 #include "config.h" 22 23 #include "core/html/HTMLProgressElement.h" 24 25 #include "HTMLNames.h" 26 #include "bindings/v8/ExceptionMessages.h" 27 #include "bindings/v8/ExceptionState.h" 28 #include "bindings/v8/ExceptionStatePlaceholder.h" 29 #include "core/dom/ExceptionCode.h" 30 #include "core/dom/shadow/ShadowRoot.h" 31 #include "core/html/parser/HTMLParserIdioms.h" 32 #include "core/html/shadow/ProgressShadowElement.h" 33 #include "core/rendering/RenderProgress.h" 34 35 namespace WebCore { 36 37 using namespace HTMLNames; 38 39 const double HTMLProgressElement::IndeterminatePosition = -1; 40 const double HTMLProgressElement::InvalidPosition = -2; 41 42 HTMLProgressElement::HTMLProgressElement(Document& document) 43 : LabelableElement(progressTag, document) 44 , m_value(0) 45 { 46 ScriptWrappable::init(this); 47 } 48 49 HTMLProgressElement::~HTMLProgressElement() 50 { 51 } 52 53 PassRefPtr<HTMLProgressElement> HTMLProgressElement::create(Document& document) 54 { 55 RefPtr<HTMLProgressElement> progress = adoptRef(new HTMLProgressElement(document)); 56 progress->ensureUserAgentShadowRoot(); 57 return progress.release(); 58 } 59 60 RenderObject* HTMLProgressElement::createRenderer(RenderStyle* style) 61 { 62 if (!style->hasAppearance() || hasAuthorShadowRoot()) 63 return RenderObject::createObject(this, style); 64 65 return new RenderProgress(this); 66 } 67 68 RenderProgress* HTMLProgressElement::renderProgress() const 69 { 70 if (renderer() && renderer()->isProgress()) 71 return toRenderProgress(renderer()); 72 73 RenderObject* renderObject = userAgentShadowRoot()->firstChild()->renderer(); 74 ASSERT_WITH_SECURITY_IMPLICATION(!renderObject || renderObject->isProgress()); 75 return toRenderProgress(renderObject); 76 } 77 78 void HTMLProgressElement::parseAttribute(const QualifiedName& name, const AtomicString& value) 79 { 80 if (name == valueAttr) 81 didElementStateChange(); 82 else if (name == maxAttr) 83 didElementStateChange(); 84 else 85 LabelableElement::parseAttribute(name, value); 86 } 87 88 void HTMLProgressElement::attach(const AttachContext& context) 89 { 90 LabelableElement::attach(context); 91 if (RenderProgress* render = renderProgress()) 92 render->updateFromElement(); 93 } 94 95 double HTMLProgressElement::value() const 96 { 97 double value = getFloatingPointAttribute(valueAttr); 98 return !std::isfinite(value) || value < 0 ? 0 : std::min(value, max()); 99 } 100 101 void HTMLProgressElement::setValue(double value, ExceptionState& exceptionState) 102 { 103 if (!std::isfinite(value)) { 104 exceptionState.throwDOMException(NotSupportedError, ExceptionMessages::notAFiniteNumber(value)); 105 return; 106 } 107 setFloatingPointAttribute(valueAttr, std::max(value, 0.)); 108 } 109 110 double HTMLProgressElement::max() const 111 { 112 double max = getFloatingPointAttribute(maxAttr); 113 return !std::isfinite(max) || max <= 0 ? 1 : max; 114 } 115 116 void HTMLProgressElement::setMax(double max, ExceptionState& exceptionState) 117 { 118 if (!std::isfinite(max)) { 119 exceptionState.throwDOMException(NotSupportedError, ExceptionMessages::notAFiniteNumber(max)); 120 return; 121 } 122 // FIXME: The specification says we should ignore the input value if it is inferior or equal to 0. 123 setFloatingPointAttribute(maxAttr, max > 0 ? max : 1); 124 } 125 126 double HTMLProgressElement::position() const 127 { 128 if (!isDeterminate()) 129 return HTMLProgressElement::IndeterminatePosition; 130 return value() / max(); 131 } 132 133 bool HTMLProgressElement::isDeterminate() const 134 { 135 return fastHasAttribute(valueAttr); 136 } 137 138 void HTMLProgressElement::didElementStateChange() 139 { 140 m_value->setWidthPercentage(position() * 100); 141 if (RenderProgress* render = renderProgress()) { 142 bool wasDeterminate = render->isDeterminate(); 143 render->updateFromElement(); 144 if (wasDeterminate != isDeterminate()) 145 didAffectSelector(AffectedSelectorIndeterminate); 146 } 147 } 148 149 void HTMLProgressElement::didAddUserAgentShadowRoot(ShadowRoot& root) 150 { 151 ASSERT(!m_value); 152 153 RefPtr<ProgressInnerElement> inner = ProgressInnerElement::create(document()); 154 inner->setPseudo(AtomicString("-webkit-progress-inner-element", AtomicString::ConstructFromLiteral)); 155 root.appendChild(inner); 156 157 RefPtr<ProgressBarElement> bar = ProgressBarElement::create(document()); 158 bar->setPseudo(AtomicString("-webkit-progress-bar", AtomicString::ConstructFromLiteral)); 159 RefPtr<ProgressValueElement> value = ProgressValueElement::create(document()); 160 m_value = value.get(); 161 m_value->setPseudo(AtomicString("-webkit-progress-value", AtomicString::ConstructFromLiteral)); 162 m_value->setWidthPercentage(HTMLProgressElement::IndeterminatePosition * 100); 163 bar->appendChild(m_value); 164 165 inner->appendChild(bar); 166 } 167 168 bool HTMLProgressElement::shouldAppearIndeterminate() const 169 { 170 return !isDeterminate(); 171 } 172 173 } // namespace 174
