| /* |
| * Copyright (C) 2011 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 NPObjectWrapper_h |
| #define NPObjectWrapper_h |
| |
| #include "bindings/v8/npruntime_impl.h" |
| |
| namespace WebCore { |
| |
| // This class wraps a NPObject and provides functionality for the wrapped |
| // object to be cleared out when this object is destroyed. This is to ensure |
| // that callers trying to access the underlying object don't crash while |
| // invoking methods on the NPObject. |
| class NPObjectWrapper { |
| public: |
| // Creates an instance of the NPObjectWrapper class and wraps the object |
| // passed in. |
| static NPObject* create(NPObject* object); |
| |
| // This method should be called to invalidate the underlying NPObject pointer. |
| void clear(); |
| |
| // Returns a pointer to NPObjectWrapper if the object passed in was wrapped by us. |
| static NPObjectWrapper* getWrapper(NPObject* obj); |
| |
| // Returns a pointer to the underlying raw NPObject pointer or 0 if the object |
| // passed in was not wrapped. |
| static NPObject* getUnderlyingNPObject(NPObject* obj); |
| |
| // NPObject functions implemented by the wrapper. |
| static NPObject* NPAllocate(NPP, NPClass*); |
| static void NPDeallocate(NPObject* obj); |
| static void NPPInvalidate(NPObject *obj); |
| static bool NPHasMethod(NPObject* obj, NPIdentifier name); |
| static bool NPInvoke(NPObject* obj, NPIdentifier name, const NPVariant* args, uint32_t argCount, NPVariant* result); |
| static bool NPInvokeDefault(NPObject* obj, const NPVariant* args, uint32_t argCount, NPVariant* result); |
| static bool NPHasProperty(NPObject* obj, NPIdentifier name); |
| static bool NPGetProperty(NPObject* obj, NPIdentifier name, NPVariant* result); |
| static bool NPSetProperty(NPObject* obj, NPIdentifier name, const NPVariant *value); |
| static bool NPRemoveProperty(NPObject* obj, NPIdentifier name); |
| static bool NPNEnumerate(NPObject* obj, NPIdentifier **value, uint32_t* count); |
| static bool NPNConstruct(NPObject* obj, const NPVariant* args, uint32_t argCount, NPVariant* result); |
| static bool NPInvokePrivate(NPP npp, NPObject* obj,bool isDefault, NPIdentifier name, const NPVariant* args, uint32_t argCount, NPVariant* result); |
| |
| private: |
| NPObjectWrapper(NPObject* obj); |
| |
| // Returns the underlying NPObject if the object passed in was wrapped. Otherwise |
| // just returns the object passed in. |
| static NPObject* getObjectForCall(NPObject* obj); |
| |
| static NPClass m_npClassWrapper; |
| // Weak NPObject poointer. |
| NPObject* m_wrappedNPObject; |
| }; |
| |
| } // namespace WebCore |
| |
| #endif // NPObjectWrapper_h |
| |