| /* |
| * Copyright (C) 2012 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * 3. Neither the name of Google Inc. nor the names of its contributors |
| * may be used to endorse or promote products derived from this |
| * software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "core/dom/custom/CustomElementRegistry.h" |
| |
| #include "HTMLNames.h" |
| #include "SVGNames.h" |
| #include "bindings/v8/CustomElementConstructorBuilder.h" |
| #include "core/dom/DocumentLifecycleObserver.h" |
| #include "core/dom/custom/CustomElement.h" |
| #include "core/dom/custom/CustomElementDefinition.h" |
| #include "core/dom/custom/CustomElementException.h" |
| #include "core/dom/custom/CustomElementRegistrationContext.h" |
| |
| namespace WebCore { |
| |
| class RegistrationContextObserver : public DocumentLifecycleObserver { |
| public: |
| explicit RegistrationContextObserver(Document* document) |
| : DocumentLifecycleObserver(document) |
| , m_wentAway(!document) |
| { |
| } |
| |
| bool registrationContextWentAway() { return m_wentAway; } |
| |
| private: |
| virtual void documentWasDisposed() OVERRIDE { m_wentAway = true; } |
| |
| bool m_wentAway; |
| }; |
| |
| CustomElementDefinition* CustomElementRegistry::registerElement(Document* document, CustomElementConstructorBuilder* constructorBuilder, const AtomicString& userSuppliedName, CustomElement::NameSet validNames, ExceptionState& es) |
| { |
| // FIXME: In every instance except one it is the |
| // CustomElementConstructorBuilder that observes document |
| // destruction during registration. This responsibility should be |
| // consolidated in one place. |
| RegistrationContextObserver observer(document); |
| |
| AtomicString type = userSuppliedName.lower(); |
| |
| if (!constructorBuilder->isFeatureAllowed()) { |
| CustomElementException::throwException(CustomElementException::CannotRegisterFromExtension, type, es); |
| return 0; |
| } |
| |
| if (!CustomElement::isValidName(type, validNames)) { |
| CustomElementException::throwException(CustomElementException::InvalidName, type, es); |
| return 0; |
| } |
| |
| QualifiedName tagName = nullQName(); |
| if (!constructorBuilder->validateOptions(type, tagName, es)) |
| return 0; |
| |
| ASSERT(tagName.namespaceURI() == HTMLNames::xhtmlNamespaceURI || tagName.namespaceURI() == SVGNames::svgNamespaceURI); |
| |
| // FIXME: This should be done earlier in validateOptions. |
| if (m_registeredTypeNames.contains(type)) { |
| CustomElementException::throwException(CustomElementException::TypeAlreadyRegistered, type, es); |
| return 0; |
| } |
| |
| ASSERT(!observer.registrationContextWentAway()); |
| |
| RefPtr<CustomElementLifecycleCallbacks> lifecycleCallbacks = constructorBuilder->createCallbacks(); |
| |
| // Consulting the constructor builder could execute script and |
| // kill the document. |
| if (observer.registrationContextWentAway()) { |
| CustomElementException::throwException(CustomElementException::ContextDestroyedCreatingCallbacks, type, es); |
| return 0; |
| } |
| |
| const CustomElementDescriptor descriptor(type, tagName.namespaceURI(), tagName.localName()); |
| RefPtr<CustomElementDefinition> definition = CustomElementDefinition::create(descriptor, lifecycleCallbacks); |
| |
| if (!constructorBuilder->createConstructor(document, definition.get(), es)) |
| return 0; |
| |
| m_definitions.add(descriptor, definition); |
| m_registeredTypeNames.add(descriptor.type()); |
| |
| if (!constructorBuilder->didRegisterDefinition(definition.get())) { |
| CustomElementException::throwException(CustomElementException::ContextDestroyedRegisteringDefinition, type, es); |
| return 0; |
| } |
| |
| return definition.get(); |
| } |
| |
| CustomElementDefinition* CustomElementRegistry::find(const CustomElementDescriptor& descriptor) const |
| { |
| return m_definitions.get(descriptor); |
| } |
| |
| } // namespace WebCore |