Dartium changes for custom element lifecycle events.

Source/bindings/dart/DartCustomElementWrapper.cpp

+/*
+ * 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:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * 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.
+ *     * 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 "bindings/dart/DartCustomElementWrapper.h"
+
+#include "DartHTMLElement.h"
+#include "DartHTMLElementWrapperFactory.h"
+#include "DartSVGElement.h"
+#include "DartSVGElementWrapperFactory.h"
+#include "bindings/dart/DartCustomElementLifecycleCallbacks.h"
+#include "core/dom/CustomElement.h"
+#include "core/html/HTMLElement.h"
+#include "core/html/HTMLUnknownElement.h"
+#include "core/svg/SVGElement.h"
+
+namespace WebCore {
+
+template<typename ElementType>
+Dart_Handle createDartDirectWrapper(ElementType*);
+
+template<>
+Dart_Handle createDartDirectWrapper<HTMLElement>(HTMLElement* element)
+{
+    return DartDOMWrapper::toDart<DartHTMLElement>(element);
+}
+
+template<>
+Dart_Handle createDartDirectWrapper<SVGElement>(SVGElement* element)
+{
+    return DartDOMWrapper::toDart<DartSVGElement>(element);
+}
+
+template<typename ElementType>
+Dart_Handle createDartFallbackWrapper(ElementType*);
+
+template<>
+Dart_Handle createDartFallbackWrapper<HTMLElement>(HTMLElement* element)
+{
+    return createDartHTMLFallbackWrapper(toHTMLUnknownElement(element));
+}
+
+template<>
+Dart_Handle createDartFallbackWrapper<SVGElement>(SVGElement* element)
+{
+    return createDartSVGFallbackWrapper(element);
+}
+
+template<typename ElementType>
+Dart_Handle createUpgradeCandidateWrapper(ElementType* element, Dart_Handle (*createSpecificWrapper)(ElementType* element))
+{
+    if (CustomElement::isValidName(element->localName()))
+        return createDartDirectWrapper(element);
+    if (createSpecificWrapper)
+        return createSpecificWrapper(element);
+    return createDartFallbackWrapper(element);
+}
+
+template<typename ElementType>
+Dart_Handle DartCustomElementWrapper<ElementType>::wrap(PassRefPtr<ElementType> element, Dart_Handle (*createSpecificWrapper)(ElementType* element))
+{
+    if (!element->isUpgradedCustomElement())
+        return createUpgradeCandidateWrapper(element.get(), createSpecificWrapper);
+
+    return upgradeDartWrapper(element.get());
+}
+
+template<>
+Dart_Handle DartCustomElementWrapper<HTMLElement>::upgradeDartWrapper(HTMLElement* element)
+{
+    DartDOMData* domData = DartDOMData::current();
+    DartCustomElementBinding* binding = domData->customElementBinding(CustomElement::definitionFor(element));
+    Dart_Handle customType = binding->customType();
+    ASSERT(!Dart_IsError(customType));
+
+    Dart_Handle oldInstance = DartDOMWrapper::lookupWrapper<DartHTMLElement>(reinterpret_cast<HTMLElement*>(element));
+    if (oldInstance) {
+        // Previous wrapper exists. Test for upgrade.
+        Dart_Handle oldType = Dart_InstanceGetType(oldInstance);
+        if (Dart_IdentityEquals(oldType, customType)) {
+            return oldInstance;
+        }
+
+        DartDOMWrapper::disassociateWrapper<DartHTMLElement>(reinterpret_cast<HTMLElement*>(element), oldInstance);
+    }
+    Dart_Handle newInstance = Dart_Allocate(customType);
+    ASSERT(!Dart_IsError(newInstance));
+
+    Dart_Handle result = Dart_SetNativeInstanceField(newInstance, 0, reinterpret_cast<intptr_t>(element));
+    UNUSED_PARAM(result);
+    ASSERT(!Dart_IsError(result));
+
+    Dart_Handle wrapper = DartDOMWrapper::associateWrapper<DartHTMLElement>(reinterpret_cast<HTMLElement*>(element), newInstance);
+    Dart_Invoke(wrapper, Dart_NewStringFromCString("created"), 0, 0);
+    return wrapper;
+}
+
+template<>
+Dart_Handle DartCustomElementWrapper<SVGElement>::upgradeDartWrapper(SVGElement* element)
+{
+    // TODO: support SVG elements.
+    ASSERT(FALSE);
+    return Dart_Handle();
+}
+
+template
+class DartCustomElementWrapper<HTMLElement>;
+
+template
+class DartCustomElementWrapper<SVGElement>;
+
+} // namespace WebCore