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/ExceptionState.h" 27 #include "bindings/v8/ExceptionStatePlaceholder.h" 28 #include "core/dom/ExceptionCode.h" 29 #include "core/dom/NodeRenderingContext.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(const QualifiedName& tagName, Document* document) 43 : LabelableElement(tagName, document) 44 , m_value(0) 45 { 46 ASSERT(hasTagName(progressTag)); 47 ScriptWrappable::init(this); 48 } 49 50 HTMLProgressElement::~HTMLProgressElement() 51 { 52 } 53 54 PassRefPtr<HTMLProgressElement> HTMLProgressElement::create(const QualifiedName& tagName, Document* document) 55 { 56 RefPtr<HTMLProgressElement> progress = adoptRef(new HTMLProgressElement(tagName, document)); 57 progress->ensureUserAgentShadowRoot(); 58 return progress.release(); 59 } 60 61 RenderObject* HTMLProgressElement::createRenderer(RenderStyle* style) 62 { 63 if (!style->hasAppearance() || hasAuthorShadowRoot()) 64 return RenderObject::createObject(this, style); 65 66 return new RenderProgress(this); 67 } 68 69 RenderProgress* HTMLProgressElement::renderProgress() const 70 { 71 if (renderer() && renderer()->isProgress()) 72 return static_cast<RenderProgress*>(renderer()); 73 74 RenderObject* renderObject = userAgentShadowRoot()->firstChild()->renderer(); 75 ASSERT_WITH_SECURITY_IMPLICATION(!renderObject || renderObject->isProgress()); 76 return static_cast<RenderProgress*>(renderObject); 77 } 78 79 void HTMLProgressElement::parseAttribute(const QualifiedName& name, const AtomicString& value) 80 { 81 if (name == valueAttr) 82 didElementStateChange(); 83 else if (name == maxAttr) 84 didElementStateChange(); 85 else 86 LabelableElement::parseAttribute(name, value); 87 } 88 89 void HTMLProgressElement::attach(const AttachContext& context) 90 { 91 LabelableElement::attach(context); 92 if (RenderProgress* render = renderProgress()) 93 render->updateFromElement(); 94 } 95 96 double HTMLProgressElement::value() const 97 { 98 double value = parseToDoubleForNumberType(fastGetAttribute(valueAttr)); 99 return !std::isfinite(value) || value < 0 ? 0 : std::min(value, max()); 100 } 101 102 void HTMLProgressElement::setValue(double value, ExceptionState& es) 103 { 104 if (!std::isfinite(value)) { 105 es.throwDOMException(NotSupportedError); 106 return; 107 } 108 setAttribute(valueAttr, String::number(value >= 0 ? value : 0)); 109 } 110 111 double HTMLProgressElement::max() const 112 { 113 double max = parseToDoubleForNumberType(getAttribute(maxAttr)); 114 return !std::isfinite(max) || max <= 0 ? 1 : max; 115 } 116 117 void HTMLProgressElement::setMax(double max, ExceptionState& es) 118 { 119 if (!std::isfinite(max)) { 120 es.throwDOMException(NotSupportedError); 121 return; 122 } 123 setAttribute(maxAttr, String::number(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 root->appendChild(inner); 155 156 RefPtr<ProgressBarElement> bar = ProgressBarElement::create(document()); 157 RefPtr<ProgressValueElement> value = ProgressValueElement::create(document()); 158 m_value = value.get(); 159 m_value->setWidthPercentage(HTMLProgressElement::IndeterminatePosition * 100); 160 bar->appendChild(m_value, ASSERT_NO_EXCEPTION); 161 162 inner->appendChild(bar, ASSERT_NO_EXCEPTION); 163 } 164 165 bool HTMLProgressElement::shouldAppearIndeterminate() const 166 { 167 return !isDeterminate(); 168 } 169 170 } // namespace 171
