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| 1 /* | |
| 2 * Copyright (C) 2013 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 "bindings/v8/CustomElementConstructorBuilder.h" | |
| 33 | |
| 34 #include "bindings/core/v8/V8Document.h" | |
| 35 #include "bindings/v8/CustomElementBinding.h" | |
| 36 #include "bindings/v8/DOMWrapperWorld.h" | |
| 37 #include "bindings/v8/Dictionary.h" | |
| 38 #include "bindings/v8/ExceptionState.h" | |
| 39 #include "bindings/v8/V8Binding.h" | |
| 40 #include "bindings/v8/V8HiddenValue.h" | |
| 41 #include "bindings/v8/V8PerContextData.h" | |
| 42 #include "core/HTMLNames.h" | |
| 43 #include "core/SVGNames.h" | |
| 44 #include "core/V8HTMLElementWrapperFactory.h" // FIXME: should be bindings/core/
v8 | |
| 45 #include "core/V8SVGElementWrapperFactory.h" // FIXME: should be bindings/core/v
8 | |
| 46 #include "core/dom/Document.h" | |
| 47 #include "core/dom/custom/CustomElementCallbackDispatcher.h" | |
| 48 #include "core/dom/custom/CustomElementDefinition.h" | |
| 49 #include "core/dom/custom/CustomElementDescriptor.h" | |
| 50 #include "core/dom/custom/CustomElementException.h" | |
| 51 #include "wtf/Assertions.h" | |
| 52 | |
| 53 namespace WebCore { | |
| 54 | |
| 55 static void constructCustomElement(const v8::FunctionCallbackInfo<v8::Value>&); | |
| 56 | |
| 57 CustomElementConstructorBuilder::CustomElementConstructorBuilder(ScriptState* sc
riptState, const Dictionary* options) | |
| 58 : m_scriptState(scriptState) | |
| 59 , m_options(options) | |
| 60 , m_wrapperType(0) | |
| 61 { | |
| 62 ASSERT(m_scriptState->context() == m_scriptState->isolate()->GetCurrentConte
xt()); | |
| 63 } | |
| 64 | |
| 65 bool CustomElementConstructorBuilder::isFeatureAllowed() const | |
| 66 { | |
| 67 return m_scriptState->world().isMainWorld(); | |
| 68 } | |
| 69 | |
| 70 bool CustomElementConstructorBuilder::validateOptions(const AtomicString& type,
QualifiedName& tagName, ExceptionState& exceptionState) | |
| 71 { | |
| 72 ASSERT(m_prototype.IsEmpty()); | |
| 73 | |
| 74 v8::TryCatch tryCatch; | |
| 75 | |
| 76 ScriptValue prototypeScriptValue; | |
| 77 if (m_options->get("prototype", prototypeScriptValue) && !prototypeScriptVal
ue.isNull()) { | |
| 78 ASSERT(!tryCatch.HasCaught()); | |
| 79 if (!prototypeScriptValue.isObject()) { | |
| 80 CustomElementException::throwException(CustomElementException::Proto
typeNotAnObject, type, exceptionState); | |
| 81 tryCatch.ReThrow(); | |
| 82 return false; | |
| 83 } | |
| 84 m_prototype = prototypeScriptValue.v8Value().As<v8::Object>(); | |
| 85 } else if (!tryCatch.HasCaught()) { | |
| 86 m_prototype = v8::Object::New(m_scriptState->isolate()); | |
| 87 v8::Local<v8::Object> basePrototype = m_scriptState->perContextData()->p
rototypeForType(&V8HTMLElement::wrapperTypeInfo); | |
| 88 if (!basePrototype.IsEmpty()) | |
| 89 m_prototype->SetPrototype(basePrototype); | |
| 90 } | |
| 91 | |
| 92 if (tryCatch.HasCaught()) { | |
| 93 tryCatch.ReThrow(); | |
| 94 return false; | |
| 95 } | |
| 96 | |
| 97 AtomicString extends; | |
| 98 bool extendsProvidedAndNonNull = m_options->get("extends", extends); | |
| 99 | |
| 100 if (tryCatch.HasCaught()) { | |
| 101 tryCatch.ReThrow(); | |
| 102 return false; | |
| 103 } | |
| 104 | |
| 105 if (!m_scriptState->perContextData()) { | |
| 106 // FIXME: This should generate an InvalidContext exception at a later po
int. | |
| 107 CustomElementException::throwException(CustomElementException::ContextDe
stroyedCheckingPrototype, type, exceptionState); | |
| 108 tryCatch.ReThrow(); | |
| 109 return false; | |
| 110 } | |
| 111 | |
| 112 AtomicString namespaceURI = HTMLNames::xhtmlNamespaceURI; | |
| 113 if (hasValidPrototypeChainFor(&V8SVGElement::wrapperTypeInfo)) | |
| 114 namespaceURI = SVGNames::svgNamespaceURI; | |
| 115 | |
| 116 ASSERT(!tryCatch.HasCaught()); | |
| 117 | |
| 118 AtomicString localName; | |
| 119 | |
| 120 if (extendsProvidedAndNonNull) { | |
| 121 localName = extends.lower(); | |
| 122 | |
| 123 if (!Document::isValidName(localName)) { | |
| 124 CustomElementException::throwException(CustomElementException::Exten
dsIsInvalidName, type, exceptionState); | |
| 125 tryCatch.ReThrow(); | |
| 126 return false; | |
| 127 } | |
| 128 if (CustomElement::isValidName(localName)) { | |
| 129 CustomElementException::throwException(CustomElementException::Exten
dsIsCustomElementName, type, exceptionState); | |
| 130 tryCatch.ReThrow(); | |
| 131 return false; | |
| 132 } | |
| 133 } else { | |
| 134 if (namespaceURI == SVGNames::svgNamespaceURI) { | |
| 135 CustomElementException::throwException(CustomElementException::Exten
dsIsInvalidName, type, exceptionState); | |
| 136 tryCatch.ReThrow(); | |
| 137 return false; | |
| 138 } | |
| 139 localName = type; | |
| 140 } | |
| 141 | |
| 142 if (!extendsProvidedAndNonNull) | |
| 143 m_wrapperType = &V8HTMLElement::wrapperTypeInfo; | |
| 144 else if (namespaceURI == HTMLNames::xhtmlNamespaceURI) | |
| 145 m_wrapperType = findWrapperTypeForHTMLTagName(localName); | |
| 146 else | |
| 147 m_wrapperType = findWrapperTypeForSVGTagName(localName); | |
| 148 | |
| 149 ASSERT(!tryCatch.HasCaught()); | |
| 150 ASSERT(m_wrapperType); | |
| 151 tagName = QualifiedName(nullAtom, localName, namespaceURI); | |
| 152 return m_wrapperType; | |
| 153 } | |
| 154 | |
| 155 PassRefPtr<CustomElementLifecycleCallbacks> CustomElementConstructorBuilder::cre
ateCallbacks() | |
| 156 { | |
| 157 ASSERT(!m_prototype.IsEmpty()); | |
| 158 | |
| 159 v8::TryCatch exceptionCatcher; | |
| 160 exceptionCatcher.SetVerbose(true); | |
| 161 | |
| 162 v8::Isolate* isolate = m_scriptState->isolate(); | |
| 163 v8::Handle<v8::Function> created = retrieveCallback(isolate, "createdCallbac
k"); | |
| 164 v8::Handle<v8::Function> attached = retrieveCallback(isolate, "attachedCallb
ack"); | |
| 165 v8::Handle<v8::Function> detached = retrieveCallback(isolate, "detachedCallb
ack"); | |
| 166 v8::Handle<v8::Function> attributeChanged = retrieveCallback(isolate, "attri
buteChangedCallback"); | |
| 167 | |
| 168 m_callbacks = V8CustomElementLifecycleCallbacks::create(m_scriptState.get(),
m_prototype, created, attached, detached, attributeChanged); | |
| 169 return m_callbacks.get(); | |
| 170 } | |
| 171 | |
| 172 v8::Handle<v8::Function> CustomElementConstructorBuilder::retrieveCallback(v8::I
solate* isolate, const char* name) | |
| 173 { | |
| 174 v8::Handle<v8::Value> value = m_prototype->Get(v8String(isolate, name)); | |
| 175 if (value.IsEmpty() || !value->IsFunction()) | |
| 176 return v8::Handle<v8::Function>(); | |
| 177 return value.As<v8::Function>(); | |
| 178 } | |
| 179 | |
| 180 bool CustomElementConstructorBuilder::createConstructor(Document* document, Cust
omElementDefinition* definition, ExceptionState& exceptionState) | |
| 181 { | |
| 182 ASSERT(!m_prototype.IsEmpty()); | |
| 183 ASSERT(m_constructor.IsEmpty()); | |
| 184 ASSERT(document); | |
| 185 | |
| 186 v8::Isolate* isolate = m_scriptState->isolate(); | |
| 187 | |
| 188 if (!prototypeIsValid(definition->descriptor().type(), exceptionState)) | |
| 189 return false; | |
| 190 | |
| 191 v8::Local<v8::FunctionTemplate> constructorTemplate = v8::FunctionTemplate::
New(isolate); | |
| 192 constructorTemplate->SetCallHandler(constructCustomElement); | |
| 193 m_constructor = constructorTemplate->GetFunction(); | |
| 194 if (m_constructor.IsEmpty()) { | |
| 195 CustomElementException::throwException(CustomElementException::ContextDe
stroyedRegisteringDefinition, definition->descriptor().type(), exceptionState); | |
| 196 return false; | |
| 197 } | |
| 198 | |
| 199 const CustomElementDescriptor& descriptor = definition->descriptor(); | |
| 200 | |
| 201 v8::Handle<v8::String> v8TagName = v8String(isolate, descriptor.localName())
; | |
| 202 v8::Handle<v8::Value> v8Type; | |
| 203 if (descriptor.isTypeExtension()) | |
| 204 v8Type = v8String(isolate, descriptor.type()); | |
| 205 else | |
| 206 v8Type = v8::Null(isolate); | |
| 207 | |
| 208 m_constructor->SetName(v8Type->IsNull() ? v8TagName : v8Type.As<v8::String>(
)); | |
| 209 | |
| 210 V8HiddenValue::setHiddenValue(isolate, m_constructor, V8HiddenValue::customE
lementDocument(isolate), toV8(document, m_scriptState->context()->Global(), isol
ate)); | |
| 211 V8HiddenValue::setHiddenValue(isolate, m_constructor, V8HiddenValue::customE
lementNamespaceURI(isolate), v8String(isolate, descriptor.namespaceURI())); | |
| 212 V8HiddenValue::setHiddenValue(isolate, m_constructor, V8HiddenValue::customE
lementTagName(isolate), v8TagName); | |
| 213 V8HiddenValue::setHiddenValue(isolate, m_constructor, V8HiddenValue::customE
lementType(isolate), v8Type); | |
| 214 | |
| 215 v8::Handle<v8::String> prototypeKey = v8String(isolate, "prototype"); | |
| 216 ASSERT(m_constructor->HasOwnProperty(prototypeKey)); | |
| 217 // This sets the property *value*; calling Set is safe because | |
| 218 // "prototype" is a non-configurable data property so there can be | |
| 219 // no side effects. | |
| 220 m_constructor->Set(prototypeKey, m_prototype); | |
| 221 // This *configures* the property. ForceSet of a function's | |
| 222 // "prototype" does not affect the value, but can reconfigure the | |
| 223 // property. | |
| 224 m_constructor->ForceSet(prototypeKey, m_prototype, v8::PropertyAttribute(v8:
:ReadOnly | v8::DontEnum | v8::DontDelete)); | |
| 225 | |
| 226 V8HiddenValue::setHiddenValue(isolate, m_prototype, V8HiddenValue::customEle
mentIsInterfacePrototypeObject(isolate), v8::True(isolate)); | |
| 227 m_prototype->ForceSet(v8String(isolate, "constructor"), m_constructor, v8::D
ontEnum); | |
| 228 | |
| 229 return true; | |
| 230 } | |
| 231 | |
| 232 bool CustomElementConstructorBuilder::prototypeIsValid(const AtomicString& type,
ExceptionState& exceptionState) const | |
| 233 { | |
| 234 if (m_prototype->InternalFieldCount() || !V8HiddenValue::getHiddenValue(m_sc
riptState->isolate(), m_prototype, V8HiddenValue::customElementIsInterfaceProtot
ypeObject(m_scriptState->isolate())).IsEmpty()) { | |
| 235 CustomElementException::throwException(CustomElementException::Prototype
InUse, type, exceptionState); | |
| 236 return false; | |
| 237 } | |
| 238 | |
| 239 if (m_prototype->GetPropertyAttributes(v8String(m_scriptState->isolate(), "c
onstructor")) & v8::DontDelete) { | |
| 240 CustomElementException::throwException(CustomElementException::Construct
orPropertyNotConfigurable, type, exceptionState); | |
| 241 return false; | |
| 242 } | |
| 243 | |
| 244 return true; | |
| 245 } | |
| 246 | |
| 247 bool CustomElementConstructorBuilder::didRegisterDefinition(CustomElementDefinit
ion* definition) const | |
| 248 { | |
| 249 ASSERT(!m_constructor.IsEmpty()); | |
| 250 | |
| 251 return m_callbacks->setBinding(definition, CustomElementBinding::create(m_sc
riptState->isolate(), m_prototype, m_wrapperType)); | |
| 252 } | |
| 253 | |
| 254 ScriptValue CustomElementConstructorBuilder::bindingsReturnValue() const | |
| 255 { | |
| 256 return ScriptValue(m_scriptState.get(), m_constructor); | |
| 257 } | |
| 258 | |
| 259 bool CustomElementConstructorBuilder::hasValidPrototypeChainFor(const WrapperTyp
eInfo* type) const | |
| 260 { | |
| 261 v8::Handle<v8::Object> elementPrototype = m_scriptState->perContextData()->p
rototypeForType(type); | |
| 262 if (elementPrototype.IsEmpty()) | |
| 263 return false; | |
| 264 | |
| 265 v8::Handle<v8::Value> chain = m_prototype; | |
| 266 while (!chain.IsEmpty() && chain->IsObject()) { | |
| 267 if (chain == elementPrototype) | |
| 268 return true; | |
| 269 chain = chain.As<v8::Object>()->GetPrototype(); | |
| 270 } | |
| 271 | |
| 272 return false; | |
| 273 } | |
| 274 | |
| 275 static void constructCustomElement(const v8::FunctionCallbackInfo<v8::Value>& in
fo) | |
| 276 { | |
| 277 v8::Isolate* isolate = info.GetIsolate(); | |
| 278 | |
| 279 if (!info.IsConstructCall()) { | |
| 280 throwTypeError("DOM object constructor cannot be called as a function.",
isolate); | |
| 281 return; | |
| 282 } | |
| 283 | |
| 284 if (info.Length() > 0) { | |
| 285 throwTypeError("This constructor should be called without arguments.", i
solate); | |
| 286 return; | |
| 287 } | |
| 288 | |
| 289 Document* document = V8Document::toNative(V8HiddenValue::getHiddenValue(info
.GetIsolate(), info.Callee(), V8HiddenValue::customElementDocument(isolate)).As<
v8::Object>()); | |
| 290 TOSTRING_VOID(V8StringResource<>, namespaceURI, V8HiddenValue::getHiddenValu
e(isolate, info.Callee(), V8HiddenValue::customElementNamespaceURI(isolate))); | |
| 291 TOSTRING_VOID(V8StringResource<>, tagName, V8HiddenValue::getHiddenValue(iso
late, info.Callee(), V8HiddenValue::customElementTagName(isolate))); | |
| 292 v8::Handle<v8::Value> maybeType = V8HiddenValue::getHiddenValue(info.GetIsol
ate(), info.Callee(), V8HiddenValue::customElementType(isolate)); | |
| 293 TOSTRING_VOID(V8StringResource<>, type, maybeType); | |
| 294 | |
| 295 ExceptionState exceptionState(ExceptionState::ConstructionContext, "CustomEl
ement", info.Holder(), info.GetIsolate()); | |
| 296 CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope; | |
| 297 RefPtrWillBeRawPtr<Element> element = document->createElementNS(namespaceURI
, tagName, maybeType->IsNull() ? nullAtom : type, exceptionState); | |
| 298 if (exceptionState.throwIfNeeded()) | |
| 299 return; | |
| 300 v8SetReturnValueFast(info, element.release(), document); | |
| 301 } | |
| 302 | |
| 303 } // namespace WebCore | |
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Chromium Code Reviews
Issue 351423002:
Moved files under Source/bindings/v8 to Source/bindings/core/v8. (Closed)
Base URL: svn://svn.chromium.org/blink/trunk