| /* |
| * Copyright (C) 2010 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. |
| */ |
| |
| #ifndef WrapperTypeInfo_h |
| #define WrapperTypeInfo_h |
| |
| #include <v8.h> |
| |
| namespace WebCore { |
| |
| class ActiveDOMObject; |
| |
| static const int v8DOMWrapperTypeIndex = 0; |
| static const int v8DOMWrapperObjectIndex = 1; |
| static const int v8DefaultWrapperInternalFieldCount = 2; |
| |
| static const uint16_t v8DOMSubtreeClassId = 1; |
| |
| typedef v8::Persistent<v8::FunctionTemplate> (*GetTemplateFunction)(); |
| typedef void (*DerefObjectFunction)(void*); |
| typedef ActiveDOMObject* (*ToActiveDOMObjectFunction)(v8::Handle<v8::Object>); |
| |
| // This struct provides a way to store a bunch of information that is helpful when unwrapping |
| // v8 objects. Each v8 bindings class has exactly one static WrapperTypeInfo member, so |
| // comparing pointers is a safe way to determine if types match. |
| struct WrapperTypeInfo { |
| |
| static WrapperTypeInfo* unwrap(v8::Handle<v8::Value> typeInfoWrapper) |
| { |
| return reinterpret_cast<WrapperTypeInfo*>(v8::External::Unwrap(typeInfoWrapper)); |
| } |
| |
| |
| bool equals(const WrapperTypeInfo* that) const |
| { |
| return this == that; |
| } |
| |
| bool isSubclass(const WrapperTypeInfo* that) const |
| { |
| for (const WrapperTypeInfo* current = this; current; current = current->parentClass) { |
| if (current == that) |
| return true; |
| } |
| |
| return false; |
| } |
| |
| v8::Persistent<v8::FunctionTemplate> getTemplate() { return getTemplateFunction(); } |
| |
| void derefObject(void* object) |
| { |
| if (derefObjectFunction) |
| derefObjectFunction(object); |
| } |
| |
| ActiveDOMObject* toActiveDOMObject(v8::Handle<v8::Object> object) |
| { |
| if (!toActiveDOMObjectFunction) |
| return 0; |
| return toActiveDOMObjectFunction(object); |
| } |
| |
| const GetTemplateFunction getTemplateFunction; |
| const DerefObjectFunction derefObjectFunction; |
| const ToActiveDOMObjectFunction toActiveDOMObjectFunction; |
| const WrapperTypeInfo* parentClass; |
| }; |
| } |
| |
| #endif // WrapperTypeInfo_h |