Merge in WebKit r47029.

1 files changed, 509 insertions, 0 deletions

diff --git a/WebCore/bindings/v8/NPV8Object.cpp b/WebCore/bindings/v8/NPV8Object.cpp
new file mode 100644
index 0000000..15dc852
--- /dev/null
+++ b/WebCore/bindings/v8/NPV8Object.cpp
@@ -0,0 +1,509 @@
+/*
+ * Copyright (C) 2004, 2006 Apple Computer, Inc.  All rights reserved.
+ * Copyright (C) 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:
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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 "NPV8Object.h"
+
+#include "ChromiumBridge.h"
+#include "DOMWindow.h"
+#include "Frame.h"
+#include "OwnArrayPtr.h"
+#include "PlatformString.h"
+#include "ScriptController.h"
+#include "V8CustomBinding.h"
+#include "V8GCController.h"
+#include "V8Helpers.h"
+#include "V8NPUtils.h"
+#include "V8Proxy.h"
+#include "bindings/npruntime.h"
+#include "npruntime_impl.h"
+#include "npruntime_priv.h"
+
+#include <stdio.h>
+#include <v8.h>
+#include <wtf/StringExtras.h>
+
+using WebCore::toV8Context;
+using WebCore::toV8Proxy;
+using WebCore::V8ClassIndex;
+using WebCore::V8Custom;
+using WebCore::V8DOMWrapper;
+using WebCore::V8GCController;
+using WebCore::V8Proxy;
+
+// FIXME: Comments on why use malloc and free.
+static NPObject* allocV8NPObject(NPP, NPClass*)
+{
+    return static_cast<NPObject*>(malloc(sizeof(V8NPObject)));
+}
+
+static void freeV8NPObject(NPObject* npObject)
+{
+    V8NPObject* v8NpObject = reinterpret_cast<V8NPObject*>(npObject);
+#ifndef NDEBUG
+    V8GCController::unregisterGlobalHandle(v8NpObject, v8NpObject->v8Object);
+#endif
+    v8NpObject->v8Object.Dispose();
+    free(v8NpObject);
+}
+
+static v8::Handle<v8::Value>* createValueListFromVariantArgs(const NPVariant* arguments, uint32_t argumentCount, NPObject* owner)
+{
+    v8::Handle<v8::Value>* argv = new v8::Handle<v8::Value>[argumentCount];
+    for (uint32_t index = 0; index < argumentCount; index++) {
+        const NPVariant* arg = &arguments[index];
+        argv[index] = convertNPVariantToV8Object(arg, owner);
+    }
+    return argv;
+}
+
+// Create an identifier (null terminated utf8 char*) from the NPIdentifier.
+static v8::Local<v8::String> npIdentifierToV8Identifier(NPIdentifier name)
+{
+    PrivateIdentifier* identifier = static_cast<PrivateIdentifier*>(name);
+    if (identifier->isString)
+        return v8::String::New(static_cast<const char*>(identifier->value.string));
+
+    char buffer[32];
+    snprintf(buffer, sizeof(buffer), "%d", identifier->value.number);
+    return v8::String::New(buffer);
+}
+
+static NPClass V8NPObjectClass = { NP_CLASS_STRUCT_VERSION,
+                                   allocV8NPObject,
+                                   freeV8NPObject,
+                                   0, 0, 0, 0, 0, 0, 0, 0, 0 };
+
+// NPAPI's npruntime functions.
+NPClass* npScriptObjectClass = &V8NPObjectClass;
+
+NPObject* npCreateV8ScriptObject(NPP npp, v8::Handle<v8::Object> object, WebCore::DOMWindow* root)
+{
+    // Check to see if this object is already wrapped.
+    if (object->InternalFieldCount() == V8Custom::kNPObjectInternalFieldCount) {
+        v8::Local<v8::Value> typeIndex = object->GetInternalField(V8Custom::kDOMWrapperTypeIndex);
+        if (typeIndex->IsNumber() && typeIndex->Uint32Value() == V8ClassIndex::NPOBJECT) {
+
+            NPObject* returnValue = V8DOMWrapper::convertToNativeObject<NPObject>(V8ClassIndex::NPOBJECT, object);
+            _NPN_RetainObject(returnValue);
+            return returnValue;
+        }
+    }
+
+    V8NPObject* v8npObject = reinterpret_cast<V8NPObject*>(_NPN_CreateObject(npp, &V8NPObjectClass));
+    v8npObject->v8Object = v8::Persistent<v8::Object>::New(object);
+#ifndef NDEBUG
+    V8GCController::registerGlobalHandle(WebCore::NPOBJECT, v8npObject, v8npObject->v8Object);
+#endif
+    v8npObject->rootObject = root;
+    return reinterpret_cast<NPObject*>(v8npObject);
+}
+
+bool _NPN_Invoke(NPP npp, NPObject* npObject, NPIdentifier methodName, const NPVariant* arguments, uint32_t argumentCount, NPVariant* result)
+{
+    if (!npObject)
+        return false;
+
+    if (npObject->_class != npScriptObjectClass) {
+        if (npObject->_class->invoke)
+            return npObject->_class->invoke(npObject, methodName, arguments, argumentCount, result);
+
+        VOID_TO_NPVARIANT(*result);
+        return true;
+    }
+
+    V8NPObject* v8NpObject = reinterpret_cast<V8NPObject*>(npObject);
+
+    PrivateIdentifier* identifier = static_cast<PrivateIdentifier*>(methodName);
+    if (!identifier->isString)
+        return false;
+
+    v8::HandleScope handleScope;
+    // FIXME: should use the plugin's owner frame as the security context.
+    v8::Handle<v8::Context> context = toV8Context(npp, npObject);
+    if (context.IsEmpty())
+        return false;
+
+    v8::Context::Scope scope(context);
+
+    if (methodName == _NPN_GetStringIdentifier("eval")) {
+        if (argumentCount != 1)
+            return false;
+        if (arguments[0].type != NPVariantType_String)
+            return false;
+        return _NPN_Evaluate(npp, npObject, const_cast<NPString*>(&arguments[0].value.stringValue), result);
+    }
+
+    v8::Handle<v8::Value> functionObject = v8NpObject->v8Object->Get(v8::String::New(identifier->value.string));
+    if (functionObject.IsEmpty() || functionObject->IsNull()) {
+        NULL_TO_NPVARIANT(*result);
+        return false;
+    }
+    if (functionObject->IsUndefined()) {
+        VOID_TO_NPVARIANT(*result);
+        return false;
+    }
+
+    V8Proxy* proxy = toV8Proxy(npObject);
+    ASSERT(proxy);
+
+    // Call the function object.
+    v8::Handle<v8::Function> function = v8::Handle<v8::Function>::Cast(functionObject);
+    OwnArrayPtr<v8::Handle<v8::Value> > argv(createValueListFromVariantArgs(arguments, argumentCount, npObject));
+    v8::Local<v8::Value> resultObject = proxy->callFunction(function, v8NpObject->v8Object, argumentCount, argv.get());
+
+    // If we had an error, return false.  The spec is a little unclear here, but says "Returns true if the method was
+    // successfully invoked".  If we get an error return value, was that successfully invoked?
+    if (resultObject.IsEmpty())
+        return false;
+
+    convertV8ObjectToNPVariant(resultObject, npObject, result);
+    return true;
+}
+
+// FIXME: Fix it same as _NPN_Invoke (HandleScope and such).
+bool _NPN_InvokeDefault(NPP npp, NPObject* npObject, const NPVariant* arguments, uint32_t argumentCount, NPVariant* result)
+{
+    if (!npObject)
+        return false;
+
+    if (npObject->_class != npScriptObjectClass) {
+        if (npObject->_class->invokeDefault)
+            return npObject->_class->invokeDefault(npObject, arguments, argumentCount, result);
+
+        VOID_TO_NPVARIANT(*result);
+        return true;
+    }
+
+    V8NPObject* v8NpObject = reinterpret_cast<V8NPObject*>(npObject);
+
+    VOID_TO_NPVARIANT(*result);
+
+    v8::HandleScope handleScope;
+    v8::Handle<v8::Context> context = toV8Context(npp, npObject);
+    if (context.IsEmpty())
+        return false;
+
+    v8::Context::Scope scope(context);
+
+    // Lookup the function object and call it.
+    v8::Handle<v8::Object> functionObject(v8NpObject->v8Object);
+    if (!functionObject->IsFunction())
+        return false;
+
+    v8::Local<v8::Value> resultObject;
+    v8::Handle<v8::Function> function(v8::Function::Cast(*functionObject));
+    if (!function->IsNull()) {
+        V8Proxy* proxy = toV8Proxy(npObject);
+        ASSERT(proxy);
+
+        OwnArrayPtr<v8::Handle<v8::Value> > argv(createValueListFromVariantArgs(arguments, argumentCount, npObject));
+        resultObject = proxy->callFunction(function, functionObject, argumentCount, argv.get());
+    }
+    // If we had an error, return false.  The spec is a little unclear here, but says "Returns true if the method was
+    // successfully invoked".  If we get an error return value, was that successfully invoked?
+    if (resultObject.IsEmpty())
+        return false;
+
+    convertV8ObjectToNPVariant(resultObject, npObject, result);
+    return true;
+}
+
+bool _NPN_Evaluate(NPP npp, NPObject* npObject, NPString* npScript, NPVariant* result)
+{
+    bool popupsAllowed = WebCore::ChromiumBridge::popupsAllowed(npp);
+    return _NPN_EvaluateHelper(npp, popupsAllowed, npObject, npScript, result);
+}
+
+bool _NPN_EvaluateHelper(NPP npp, bool popupsAllowed, NPObject* npObject, NPString* npScript, NPVariant* result)
+{
+    VOID_TO_NPVARIANT(*result);
+    if (!npObject)
+        return false;
+
+    if (npObject->_class != npScriptObjectClass)
+        return false;
+
+    v8::HandleScope handleScope;
+    v8::Handle<v8::Context> context = toV8Context(npp, npObject);
+    if (context.IsEmpty())
+        return false;
+
+    V8Proxy* proxy = toV8Proxy(npObject);
+    ASSERT(proxy);
+
+    v8::Context::Scope scope(context);
+
+    WebCore::String filename;
+    if (!popupsAllowed)
+        filename = "npscript";
+
+    WebCore::String script = WebCore::String::fromUTF8(npScript->UTF8Characters, npScript->UTF8Length);
+    v8::Local<v8::Value> v8result = proxy->evaluate(WebCore::ScriptSourceCode(script, WebCore::KURL(filename)), 0);
+
+    if (v8result.IsEmpty())
+        return false;
+
+    convertV8ObjectToNPVariant(v8result, npObject, result);
+    return true;
+}
+
+bool _NPN_GetProperty(NPP npp, NPObject* npObject, NPIdentifier propertyName, NPVariant* result)
+{
+    if (!npObject)
+        return false;
+
+    if (npObject->_class == npScriptObjectClass) {
+        V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject);
+
+        v8::HandleScope handleScope;
+        v8::Handle<v8::Context> context = toV8Context(npp, npObject);
+        if (context.IsEmpty())
+            return false;
+
+        v8::Context::Scope scope(context);
+
+        v8::Handle<v8::Object> obj(object->v8Object);
+        v8::Local<v8::Value> v8result = obj->Get(npIdentifierToV8Identifier(propertyName));
+
+        convertV8ObjectToNPVariant(v8result, npObject, result);
+        return true;
+    }
+
+    if (npObject->_class->hasProperty && npObject->_class->getProperty) {
+        if (npObject->_class->hasProperty(npObject, propertyName))
+            return npObject->_class->getProperty(npObject, propertyName, result);
+    }
+
+    VOID_TO_NPVARIANT(*result);
+    return false;
+}
+
+bool _NPN_SetProperty(NPP npp, NPObject* npObject, NPIdentifier propertyName, const NPVariant* value)
+{
+    if (!npObject)
+        return false;
+
+    if (npObject->_class == npScriptObjectClass) {
+        V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject);
+
+        v8::HandleScope handleScope;
+        v8::Handle<v8::Context> context = toV8Context(npp, npObject);
+        if (context.IsEmpty())
+            return false;
+
+        v8::Context::Scope scope(context);
+
+        v8::Handle<v8::Object> obj(object->v8Object);
+        obj->Set(npIdentifierToV8Identifier(propertyName),
+                 convertNPVariantToV8Object(value, object->rootObject->frame()->script()->windowScriptNPObject()));
+        return true;
+    }
+
+    if (npObject->_class->setProperty)
+        return npObject->_class->setProperty(npObject, propertyName, value);
+
+    return false;
+}
+
+bool _NPN_RemoveProperty(NPP npp, NPObject* npObject, NPIdentifier propertyName)
+{
+    if (!npObject)
+        return false;
+    if (npObject->_class != npScriptObjectClass)
+        return false;
+
+    V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject);
+
+    v8::HandleScope handleScope;
+    v8::Handle<v8::Context> context = toV8Context(npp, npObject);
+    if (context.IsEmpty())
+        return false;
+    v8::Context::Scope scope(context);
+
+    v8::Handle<v8::Object> obj(object->v8Object);
+    // FIXME: Verify that setting to undefined is right.
+    obj->Set(npIdentifierToV8Identifier(propertyName), v8::Undefined());
+    return true;
+}
+
+bool _NPN_HasProperty(NPP npp, NPObject* npObject, NPIdentifier propertyName)
+{
+    if (!npObject)
+        return false;
+
+    if (npObject->_class == npScriptObjectClass) {
+        V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject);
+
+        v8::HandleScope handleScope;
+        v8::Handle<v8::Context> context = toV8Context(npp, npObject);
+        if (context.IsEmpty())
+            return false;
+        v8::Context::Scope scope(context);
+
+        v8::Handle<v8::Object> obj(object->v8Object);
+        return obj->Has(npIdentifierToV8Identifier(propertyName));
+    }
+
+    if (npObject->_class->hasProperty)
+        return npObject->_class->hasProperty(npObject, propertyName);
+    return false;
+}
+
+bool _NPN_HasMethod(NPP npp, NPObject* npObject, NPIdentifier methodName)
+{
+    if (!npObject)
+        return false;
+
+    if (npObject->_class == npScriptObjectClass) {
+        V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject);
+
+        v8::HandleScope handleScope;
+        v8::Handle<v8::Context> context = toV8Context(npp, npObject);
+        if (context.IsEmpty())
+            return false;
+        v8::Context::Scope scope(context);
+
+        v8::Handle<v8::Object> obj(object->v8Object);
+        v8::Handle<v8::Value> prop = obj->Get(npIdentifierToV8Identifier(methodName));
+        return prop->IsFunction();
+    }
+
+    if (npObject->_class->hasMethod)
+        return npObject->_class->hasMethod(npObject, methodName);
+    return false;
+}
+
+void _NPN_SetException(NPObject* npObject, const NPUTF8 *message)
+{
+    if (npObject->_class != npScriptObjectClass)
+        return;
+    v8::HandleScope handleScope;
+    v8::Handle<v8::Context> context = toV8Context(0, npObject);
+    if (context.IsEmpty())
+        return;
+
+    v8::Context::Scope scope(context);
+    V8Proxy::throwError(V8Proxy::GeneralError, message);
+}
+
+bool _NPN_Enumerate(NPP npp, NPObject* npObject, NPIdentifier** identifier, uint32_t* count)
+{
+    if (!npObject)
+        return false;
+
+    if (npObject->_class == npScriptObjectClass) {
+        V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject);
+
+        v8::HandleScope handleScope;
+        v8::Handle<v8::Context> context = toV8Context(npp, npObject);
+        if (context.IsEmpty())
+            return false;
+        v8::Context::Scope scope(context);
+
+        v8::Handle<v8::Object> obj(object->v8Object);
+
+        // FIXME: http://b/issue?id=1210340: Use a v8::Object::Keys() method when it exists, instead of evaluating javascript.
+
+        // FIXME: Figure out how to cache this helper function.  Run a helper function that collects the properties
+        // on the object into an array.
+        const char enumeratorCode[] =
+            "(function (obj) {"
+            "  var props = [];"
+            "  for (var prop in obj) {"
+            "    props[props.length] = prop;"
+            "  }"
+            "  return props;"
+            "});";
+        v8::Handle<v8::String> source = v8::String::New(enumeratorCode);
+        v8::Handle<v8::Script> script = v8::Script::Compile(source, 0);
+        v8::Handle<v8::Value> enumeratorObj = script->Run();
+        v8::Handle<v8::Function> enumerator = v8::Handle<v8::Function>::Cast(enumeratorObj);
+        v8::Handle<v8::Value> argv[] = { obj };
+        v8::Local<v8::Value> propsObj = enumerator->Call(v8::Handle<v8::Object>::Cast(enumeratorObj), ARRAYSIZE_UNSAFE(argv), argv);
+        if (propsObj.IsEmpty())
+            return false;
+
+        // Convert the results into an array of NPIdentifiers.
+        v8::Handle<v8::Array> props = v8::Handle<v8::Array>::Cast(propsObj);
+        *count = props->Length();
+        *identifier = static_cast<NPIdentifier*>(malloc(sizeof(NPIdentifier*) * *count));
+        for (uint32_t i = 0; i < *count; ++i) {
+            v8::Local<v8::Value> name = props->Get(v8::Integer::New(i));
+            (*identifier)[i] = getStringIdentifier(v8::Local<v8::String>::Cast(name));
+        }
+        return true;
+    }
+
+    if (NP_CLASS_STRUCT_VERSION_HAS_ENUM(npObject->_class) && npObject->_class->enumerate)
+       return npObject->_class->enumerate(npObject, identifier, count);
+
+    return false;
+}
+
+bool _NPN_Construct(NPP npp, NPObject* npObject, const NPVariant* arguments, uint32_t argumentCount, NPVariant* result)
+{
+    if (!npObject)
+        return false;
+
+    if (npObject->_class == npScriptObjectClass) {
+        V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject);
+
+        v8::HandleScope handleScope;
+        v8::Handle<v8::Context> context = toV8Context(npp, npObject);
+        if (context.IsEmpty())
+            return false;
+        v8::Context::Scope scope(context);
+
+        // Lookup the constructor function.
+        v8::Handle<v8::Object> ctorObj(object->v8Object);
+        if (!ctorObj->IsFunction())
+            return false;
+
+        // Call the constructor.
+        v8::Local<v8::Value> resultObject;
+        v8::Handle<v8::Function> ctor(v8::Function::Cast(*ctorObj));
+        if (!ctor->IsNull()) {
+            V8Proxy* proxy = toV8Proxy(npObject);
+            ASSERT(proxy);
+
+            OwnArrayPtr<v8::Handle<v8::Value> > argv(createValueListFromVariantArgs(arguments, argumentCount, npObject));
+            resultObject = proxy->newInstance(ctor, argumentCount, argv.get());
+        }
+
+        if (resultObject.IsEmpty())
+            return false;
+
+        convertV8ObjectToNPVariant(resultObject, npObject, result);
+        return true;
+    }
+
+    if (NP_CLASS_STRUCT_VERSION_HAS_CTOR(npObject->_class) && npObject->_class->construct)
+        return npObject->_class->construct(npObject, arguments, argumentCount, result);
+
+    return false;
+}