Remove support for NPObjects.

third_party/WebKit/Source/bindings/core/v8/V8NPObject.cpp

Index: third_party/WebKit/Source/bindings/core/v8/V8NPObject.cpp
diff --git a/third_party/WebKit/Source/bindings/core/v8/V8NPObject.cpp b/third_party/WebKit/Source/bindings/core/v8/V8NPObject.cpp
deleted file mode 100644
index f7f069e2dcc90d7ff14874a673d019b4d596d4cc..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/bindings/core/v8/V8NPObject.cpp
+++ /dev/null
@@ -1,507 +0,0 @@
-/*
-* Copyright (C) 2006, 2007, 2008, 2009 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 "bindings/core/v8/V8NPObject.h"
-
-#include "bindings/core/v8/NPV8Object.h"
-#include "bindings/core/v8/V8Binding.h"
-#include "bindings/core/v8/V8GlobalValueMap.h"
-#include "bindings/core/v8/V8HTMLEmbedElement.h"
-#include "bindings/core/v8/V8HTMLObjectElement.h"
-#include "bindings/core/v8/V8NPUtils.h"
-#include "bindings/core/v8/V8ObjectConstructor.h"
-#include "bindings/core/v8/npruntime_impl.h"
-#include "bindings/core/v8/npruntime_priv.h"
-#include "core/html/HTMLPlugInElement.h"
-#include "v8-util.h"
-#include "wtf/OwnPtr.h"
-
-namespace blink {
-
-enum InvokeFunctionType {
-    InvokeMethod = 1,
-    InvokeConstruct = 2,
-    InvokeDefault = 3
-};
-
-struct IdentifierRep {
-    int number() const { return m_isString ? 0 : m_value.m_number; }
-    const char* string() const { return m_isString ? m_value.m_string : 0; }
-
-    union {
-        const char* m_string;
-        int m_number;
-    } m_value;
-    bool m_isString;
-};
-
-// FIXME: need comments.
-// Params: holder could be HTMLEmbedElement or NPObject
-static void npObjectInvokeImpl(const v8::FunctionCallbackInfo<v8::Value>& info, InvokeFunctionType functionId)
-{
-    NPObject* npObject;
-    v8::Isolate* isolate = info.GetIsolate();
-
-    // These two types are subtypes of HTMLPlugInElement.
-    HTMLPlugInElement* element = V8HTMLEmbedElement::toImplWithTypeCheck(isolate, info.Holder());
-    if (!element)
-        element = V8HTMLObjectElement::toImplWithTypeCheck(isolate, info.Holder());
-    if (element) {
-        if (RefPtr<SharedPersistent<v8::Object>> wrapper = element->pluginWrapper()) {
-            v8::HandleScope handleScope(isolate);
-            npObject = v8ObjectToNPObject(wrapper->newLocal(isolate));
-        } else {
-            npObject = 0;
-        }
-    } else {
-        // The holder object is not a subtype of HTMLPlugInElement, it must be an NPObject which has three
-        // internal fields.
-        if (info.Holder()->InternalFieldCount() != npObjectInternalFieldCount) {
-            V8ThrowException::throwReferenceError(info.GetIsolate(), "NPMethod called on non-NPObject");
-            return;
-        }
-
-        npObject = v8ObjectToNPObject(info.Holder());
-    }
-
-    // Verify that our wrapper wasn't using a NPObject which has already been deleted.
-    if (!npObject || !_NPN_IsAlive(npObject)) {
-        V8ThrowException::throwReferenceError(isolate, "NPObject deleted");
-        return;
-    }
-
-    // Wrap up parameters.
-    int numArgs = info.Length();
-    OwnPtr<NPVariant[]> npArgs = adoptArrayPtr(new NPVariant[numArgs]);
-
-    for (int i = 0; i < numArgs; i++)
-        convertV8ObjectToNPVariant(isolate, info[i], npObject, &npArgs[i]);
-
-    NPVariant result;
-    VOID_TO_NPVARIANT(result);
-
-    bool retval = true;
-    switch (functionId) {
-    case InvokeMethod:
-        if (npObject->_class->invoke) {
-            v8::Local<v8::String> functionName = v8::Local<v8::String>::Cast(info.Data());
-            NPIdentifier identifier = getStringIdentifier(functionName);
-            retval = npObject->_class->invoke(npObject, identifier, npArgs.get(), numArgs, &result);
-        }
-        break;
-    case InvokeConstruct:
-        if (npObject->_class->construct)
-            retval = npObject->_class->construct(npObject, npArgs.get(), numArgs, &result);
-        break;
-    case InvokeDefault:
-        if (npObject->_class->invokeDefault)
-            retval = npObject->_class->invokeDefault(npObject, npArgs.get(), numArgs, &result);
-        break;
-    default:
-        break;
-    }
-
-    if (!retval)
-        V8ThrowException::throwGeneralError(isolate, "Error calling method on NPObject.");
-
-    for (int i = 0; i < numArgs; i++)
-        _NPN_ReleaseVariantValue(&npArgs[i]);
-
-    // Unwrap return values.
-    v8::Local<v8::Value> returnValue;
-    if (_NPN_IsAlive(npObject))
-        returnValue = convertNPVariantToV8Object(isolate, &result, npObject);
-    _NPN_ReleaseVariantValue(&result);
-
-    v8SetReturnValue(info, returnValue);
-}
-
-
-void npObjectMethodHandler(const v8::FunctionCallbackInfo<v8::Value>& info)
-{
-    return npObjectInvokeImpl(info, InvokeMethod);
-}
-
-
-void npObjectInvokeDefaultHandler(const v8::FunctionCallbackInfo<v8::Value>& info)
-{
-    if (info.IsConstructCall()) {
-        npObjectInvokeImpl(info, InvokeConstruct);
-        return;
-    }
-
-    npObjectInvokeImpl(info, InvokeDefault);
-}
-
-class V8TemplateMapTraits : public V8GlobalValueMapTraits<PrivateIdentifier*, v8::FunctionTemplate, v8::kWeakWithParameter> {
-public:
-    typedef v8::GlobalValueMap<PrivateIdentifier*, v8::FunctionTemplate, V8TemplateMapTraits> MapType;
-    typedef PrivateIdentifier WeakCallbackDataType;
-
-    static WeakCallbackDataType* WeakCallbackParameter(MapType* map, PrivateIdentifier* key, const v8::Local<v8::FunctionTemplate>& value)
-    {
-        return key;
-    }
-
-    static void DisposeCallbackData(WeakCallbackDataType* callbackData) { }
-
-    static MapType* MapFromWeakCallbackInfo(
-        const v8::WeakCallbackInfo<WeakCallbackDataType>&);
-
-    static PrivateIdentifier* KeyFromWeakCallbackInfo(
-        const v8::WeakCallbackInfo<WeakCallbackDataType>& data)
-    {
-        return data.GetParameter();
-    }
-
-    // Dispose traits:
-    static void OnWeakCallback(const v8::WeakCallbackInfo<WeakCallbackDataType>& data) { }
-    static void Dispose(v8::Isolate* isolate, v8::Global<v8::FunctionTemplate> value, PrivateIdentifier* key) { }
-    static void DisposeWeak(const v8::WeakCallbackInfo<WeakCallbackDataType>& data) { }
-};
-
-
-class V8NPTemplateMap {
-public:
-    // NPIdentifier is PrivateIdentifier*.
-    typedef v8::GlobalValueMap<PrivateIdentifier*, v8::FunctionTemplate, V8TemplateMapTraits> MapType;
-
-    v8::Local<v8::FunctionTemplate> get(PrivateIdentifier* key)
-    {
-        return m_map.Get(key);
-    }
-
-    void set(PrivateIdentifier* key, v8::Local<v8::FunctionTemplate> handle)
-    {
-        ASSERT(!m_map.Contains(key));
-        m_map.Set(key, handle);
-    }
-
-    static V8NPTemplateMap& sharedInstance(v8::Isolate* isolate)
-    {
-        DEFINE_STATIC_LOCAL(V8NPTemplateMap, map, (isolate));
-        ASSERT(isolate == map.m_map.GetIsolate());
-        return map;
-    }
-
-    friend class V8TemplateMapTraits;
-
-private:
-    explicit V8NPTemplateMap(v8::Isolate* isolate)
-        : m_map(isolate)
-    {
-    }
-
-    MapType m_map;
-};
-
-V8TemplateMapTraits::MapType* V8TemplateMapTraits::MapFromWeakCallbackInfo(const v8::WeakCallbackInfo<WeakCallbackDataType>& data)
-{
-    return &V8NPTemplateMap::sharedInstance(data.GetIsolate()).m_map;
-}
-
-
-static v8::Local<v8::Value> npObjectGetProperty(v8::Isolate* isolate, v8::Local<v8::Object> self, NPIdentifier identifier, v8::Local<v8::Value> key)
-{
-    NPObject* npObject = v8ObjectToNPObject(self);
-
-    // Verify that our wrapper wasn't using a NPObject which
-    // has already been deleted.
-    if (!npObject || !_NPN_IsAlive(npObject))
-        return V8ThrowException::throwReferenceError(isolate, "NPObject deleted");
-
-
-    if (npObject->_class->hasProperty && npObject->_class->getProperty && npObject->_class->hasProperty(npObject, identifier)) {
-        if (!_NPN_IsAlive(npObject))
-            return V8ThrowException::throwReferenceError(isolate, "NPObject deleted");
-
-        NPVariant result;
-        VOID_TO_NPVARIANT(result);
-        if (!npObject->_class->getProperty(npObject, identifier, &result))
-            return v8Undefined();
-
-        v8::Local<v8::Value> returnValue;
-        if (_NPN_IsAlive(npObject))
-            returnValue = convertNPVariantToV8Object(isolate, &result, npObject);
-        _NPN_ReleaseVariantValue(&result);
-        return returnValue;
-
-    }
-
-    if (!_NPN_IsAlive(npObject))
-        return V8ThrowException::throwReferenceError(isolate, "NPObject deleted");
-
-    if (key->IsString() && npObject->_class->hasMethod && npObject->_class->hasMethod(npObject, identifier)) {
-        if (!_NPN_IsAlive(npObject))
-            return V8ThrowException::throwReferenceError(isolate, "NPObject deleted");
-
-        PrivateIdentifier* id = static_cast<PrivateIdentifier*>(identifier);
-        v8::Local<v8::FunctionTemplate> functionTemplate = V8NPTemplateMap::sharedInstance(isolate).get(id);
-        // Cache templates using identifier as the key.
-        if (functionTemplate.IsEmpty()) {
-            // Create a new template.
-            functionTemplate = v8::FunctionTemplate::New(isolate);
-            functionTemplate->SetCallHandler(npObjectMethodHandler, key);
-            V8NPTemplateMap::sharedInstance(isolate).set(id, functionTemplate);
-        }
-        v8::Local<v8::Function> v8Function;
-        if (!functionTemplate->GetFunction(isolate->GetCurrentContext()).ToLocal(&v8Function))
-            return v8Undefined();
-        v8Function->SetName(v8::Local<v8::String>::Cast(key));
-        return v8Function;
-    }
-
-    return v8Undefined();
-}
-
-void npObjectNamedPropertyGetter(v8::Local<v8::String> name, const v8::PropertyCallbackInfo<v8::Value>& info)
-{
-    NPIdentifier identifier = getStringIdentifier(name);
-    v8SetReturnValue(info, npObjectGetProperty(info.GetIsolate(), info.Holder(), identifier, name));
-}
-
-void npObjectIndexedPropertyGetter(uint32_t index, const v8::PropertyCallbackInfo<v8::Value>& info)
-{
-    NPIdentifier identifier = _NPN_GetIntIdentifier(index);
-    v8SetReturnValue(info, npObjectGetProperty(info.GetIsolate(), info.Holder(), identifier, v8::Number::New(info.GetIsolate(), index)));
-}
-
-void npObjectGetNamedProperty(v8::Local<v8::Object> self, v8::Local<v8::String> name, const v8::PropertyCallbackInfo<v8::Value>& info)
-{
-    NPIdentifier identifier = getStringIdentifier(name);
-    v8SetReturnValue(info, npObjectGetProperty(info.GetIsolate(), self, identifier, name));
-}
-
-void npObjectGetIndexedProperty(v8::Local<v8::Object> self, uint32_t index, const v8::PropertyCallbackInfo<v8::Value>& info)
-{
-    NPIdentifier identifier = _NPN_GetIntIdentifier(index);
-    v8SetReturnValue(info, npObjectGetProperty(info.GetIsolate(), self, identifier, v8::Number::New(info.GetIsolate(), index)));
-}
-
-void npObjectQueryProperty(v8::Local<v8::String> name, const v8::PropertyCallbackInfo<v8::Integer>& info)
-{
-    NPIdentifier identifier = getStringIdentifier(name);
-    if (npObjectGetProperty(info.GetIsolate(), info.Holder(), identifier, name).IsEmpty())
-        return;
-    v8SetReturnValueInt(info, 0);
-}
-
-static v8::Local<v8::Value> npObjectSetProperty(v8::Local<v8::Object> self, NPIdentifier identifier, v8::Local<v8::Value> value, v8::Isolate* isolate)
-{
-    NPObject* npObject = v8ObjectToNPObject(self);
-
-    // Verify that our wrapper wasn't using a NPObject which has already been deleted.
-    if (!npObject || !_NPN_IsAlive(npObject)) {
-        V8ThrowException::throwReferenceError(isolate, "NPObject deleted");
-        return value; // Intercepted, but an exception was thrown.
-    }
-
-    if (npObject->_class->hasProperty && npObject->_class->setProperty && npObject->_class->hasProperty(npObject, identifier)) {
-        if (!_NPN_IsAlive(npObject))
-            return V8ThrowException::throwReferenceError(isolate, "NPObject deleted");
-
-        NPVariant npValue;
-        VOID_TO_NPVARIANT(npValue);
-        convertV8ObjectToNPVariant(isolate, value, npObject, &npValue);
-        bool success = npObject->_class->setProperty(npObject, identifier, &npValue);
-        _NPN_ReleaseVariantValue(&npValue);
-        if (success)
-            return value; // Intercept the call.
-    }
-    return v8Undefined();
-}
-
-
-void npObjectNamedPropertySetter(v8::Local<v8::String> name, v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<v8::Value>& info)
-{
-    NPIdentifier identifier = getStringIdentifier(name);
-    v8SetReturnValue(info, npObjectSetProperty(info.Holder(), identifier, value, info.GetIsolate()));
-}
-
-
-void npObjectIndexedPropertySetter(uint32_t index, v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<v8::Value>& info)
-{
-    NPIdentifier identifier = _NPN_GetIntIdentifier(index);
-    v8SetReturnValue(info, npObjectSetProperty(info.Holder(), identifier, value, info.GetIsolate()));
-}
-
-void npObjectSetNamedProperty(v8::Local<v8::Object> self, v8::Local<v8::String> name, v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<v8::Value>& info)
-{
-    NPIdentifier identifier = getStringIdentifier(name);
-    v8SetReturnValue(info, npObjectSetProperty(self, identifier, value, info.GetIsolate()));
-}
-
-void npObjectSetIndexedProperty(v8::Local<v8::Object> self, uint32_t index, v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<v8::Value>& info)
-{
-    NPIdentifier identifier = _NPN_GetIntIdentifier(index);
-    v8SetReturnValue(info, npObjectSetProperty(self, identifier, value, info.GetIsolate()));
-}
-
-void npObjectPropertyEnumerator(const v8::PropertyCallbackInfo<v8::Array>& info, bool namedProperty)
-{
-    NPObject* npObject = v8ObjectToNPObject(info.Holder());
-
-    // Verify that our wrapper wasn't using a NPObject which
-    // has already been deleted.
-    if (!npObject || !_NPN_IsAlive(npObject)) {
-        V8ThrowException::throwReferenceError(info.GetIsolate(), "NPObject deleted");
-        return;
-    }
-
-    if (NP_CLASS_STRUCT_VERSION_HAS_ENUM(npObject->_class) && npObject->_class->enumerate) {
-        uint32_t count;
-        NPIdentifier* identifiers;
-        if (npObject->_class->enumerate(npObject, &identifiers, &count)) {
-            uint32_t propertiesCount = 0;
-            for (uint32_t i = 0; i < count; ++i) {
-                IdentifierRep* identifier = static_cast<IdentifierRep*>(identifiers[i]);
-                if (namedProperty == identifier->m_isString)
-                    ++propertiesCount;
-            }
-            v8::Local<v8::Array> properties = v8::Array::New(info.GetIsolate(), propertiesCount);
-            for (uint32_t i = 0, propertyIndex = 0; i < count; ++i) {
-                IdentifierRep* identifier = static_cast<IdentifierRep*>(identifiers[i]);
-                if (namedProperty == identifier->m_isString) {
-                    ASSERT(propertyIndex < propertiesCount);
-                    v8::Local<v8::Value> value;
-                    if (namedProperty)
-                        value = v8AtomicString(info.GetIsolate(), identifier->string());
-                    else
-                        value = v8::Integer::New(info.GetIsolate(), identifier->number());
-                    v8::Local<v8::Number> index = v8::Integer::New(info.GetIsolate(), propertyIndex++);
-                    if (!v8CallBoolean(properties->Set(info.GetIsolate()->GetCurrentContext(), index, value)))
-                        return;
-                }
-            }
-
-            v8SetReturnValue(info, properties);
-            return;
-        }
-    }
-}
-
-void npObjectNamedPropertyEnumerator(const v8::PropertyCallbackInfo<v8::Array>& info)
-{
-    npObjectPropertyEnumerator(info, true);
-}
-
-void npObjectIndexedPropertyEnumerator(const v8::PropertyCallbackInfo<v8::Array>& info)
-{
-    npObjectPropertyEnumerator(info, false);
-}
-
-static DOMWrapperMap<NPObject>& staticNPObjectMap()
-{
-    DEFINE_STATIC_LOCAL(DOMWrapperMap<NPObject>, npObjectMap, (v8::Isolate::GetCurrent()));
-    return npObjectMap;
-}
-
-template<>
-inline void DOMWrapperMap<NPObject>::PersistentValueMapTraits::Dispose(v8::Isolate*, v8::Global<v8::Object> value, NPObject* key)
-{
-    auto npObject = key;
-    ASSERT(npObject);
-    if (_NPN_IsAlive(npObject))
-        _NPN_ReleaseObject(npObject);
-}
-
-template<>
-inline void DOMWrapperMap<NPObject>::PersistentValueMapTraits::DisposeWeak(const v8::WeakCallbackInfo<WeakCallbackDataType>& data)
-{
-    auto npObject = KeyFromWeakCallbackInfo(data);
-    ASSERT(npObject);
-    if (_NPN_IsAlive(npObject))
-        _NPN_ReleaseObject(npObject);
-}
-
-v8::Local<v8::Object> createV8ObjectForNPObject(v8::Isolate* isolate, NPObject* object, NPObject* root)
-{
-    static v8::Eternal<v8::FunctionTemplate> npObjectDesc;
-
-    ASSERT(isolate->InContext());
-
-    // If this is a v8 object, just return it.
-    V8NPObject* v8NPObject = npObjectToV8NPObject(object);
-    if (v8NPObject)
-        return v8::Local<v8::Object>::New(isolate, v8NPObject->v8Object);
-
-    // If we've already wrapped this object, just return it.
-    v8::Local<v8::Object> wrapper = staticNPObjectMap().newLocal(isolate, object);
-    if (!wrapper.IsEmpty())
-        return wrapper;
-
-    // FIXME: we should create a Wrapper type as a subclass of JSObject. It has two internal fields, field 0 is the wrapped
-    // pointer, and field 1 is the type. There should be an api function that returns unused type id. The same Wrapper type
-    // can be used by DOM bindings.
-    if (npObjectDesc.IsEmpty()) {
-        v8::Local<v8::FunctionTemplate> templ = v8::FunctionTemplate::New(isolate);
-        templ->InstanceTemplate()->SetInternalFieldCount(npObjectInternalFieldCount);
-        templ->InstanceTemplate()->SetNamedPropertyHandler(npObjectNamedPropertyGetter, npObjectNamedPropertySetter, npObjectQueryProperty, 0, npObjectNamedPropertyEnumerator);
-        templ->InstanceTemplate()->SetIndexedPropertyHandler(npObjectIndexedPropertyGetter, npObjectIndexedPropertySetter, 0, 0, npObjectIndexedPropertyEnumerator);
-        templ->InstanceTemplate()->SetCallAsFunctionHandler(npObjectInvokeDefaultHandler);
-        npObjectDesc.Set(isolate, templ);
-    }
-
-    // FIXME: Move staticNPObjectMap() to DOMDataStore.
-    // Use V8DOMWrapper::createWrapper() and
-    // V8DOMWrapper::associateObjectWithWrapper()
-    // to create a wrapper object.
-    v8::Local<v8::Function> v8Function;
-    if (!npObjectDesc.Get(isolate)->GetFunction(isolate->GetCurrentContext()).ToLocal(&v8Function))
-        return v8::Local<v8::Object>();
-    v8::Local<v8::Object> value;
-    if (!V8ObjectConstructor::newInstance(isolate, v8Function).ToLocal(&value))
-        return v8::Local<v8::Object>();
-
-    V8DOMWrapper::setNativeInfo(value, npObjectTypeInfo(), npObjectToScriptWrappable(object));
-
-    // KJS retains the object as part of its wrapper (see Bindings::CInstance).
-    _NPN_RetainObject(object);
-    _NPN_RegisterObject(object, root);
-
-    bool wrapperDidNotExist = staticNPObjectMap().set(object, npObjectTypeInfo(), value);
-    ASSERT_UNUSED(wrapperDidNotExist, wrapperDidNotExist);
-    ASSERT(V8DOMWrapper::hasInternalFieldsSet(value));
-    return value;
-}
-
-void forgetV8ObjectForNPObject(NPObject* object)
-{
-    v8::Isolate* isolate = v8::Isolate::GetCurrent();
-    v8::HandleScope scope(isolate);
-    v8::Local<v8::Object> wrapper = staticNPObjectMap().newLocal(isolate, object);
-    if (!wrapper.IsEmpty()) {
-        V8DOMWrapper::clearNativeInfo(wrapper, npObjectTypeInfo());
-        staticNPObjectMap().removeAndDispose(object);
-        _NPN_ReleaseObject(object);
-    }
-}
-
-} // namespace blink