gecko-dev/dom/plugins/ipc/PluginScriptableObjectUtils...

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: sw=2 ts=2 et :
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "PluginScriptableObjectUtils.h"
namespace {
template<class InstanceType>
class VariantTraits;
template<>
class VariantTraits<mozilla::plugins::PluginInstanceParent>
{
public:
typedef mozilla::plugins::PluginScriptableObjectParent ScriptableObjectType;
};
template<>
class VariantTraits<mozilla::plugins::PluginInstanceChild>
{
public:
typedef mozilla::plugins::PluginScriptableObjectChild ScriptableObjectType;
};
} /* anonymous namespace */
inline bool
mozilla::plugins::ConvertToVariant(const Variant& aRemoteVariant,
NPVariant& aVariant,
PluginInstanceParent* aInstance)
{
switch (aRemoteVariant.type()) {
case Variant::Tvoid_t: {
VOID_TO_NPVARIANT(aVariant);
break;
}
case Variant::Tnull_t: {
NULL_TO_NPVARIANT(aVariant);
break;
}
case Variant::Tbool: {
BOOLEAN_TO_NPVARIANT(aRemoteVariant.get_bool(), aVariant);
break;
}
case Variant::Tint: {
INT32_TO_NPVARIANT(aRemoteVariant.get_int(), aVariant);
break;
}
case Variant::Tdouble: {
DOUBLE_TO_NPVARIANT(aRemoteVariant.get_double(), aVariant);
break;
}
case Variant::TnsCString: {
const nsCString& string = aRemoteVariant.get_nsCString();
const size_t length = string.Length();
NPUTF8* buffer = static_cast<NPUTF8*>(::malloc(sizeof(NPUTF8) * (length + 1)));
if (!buffer) {
NS_ERROR("Out of memory!");
return false;
}
std::copy(string.get(), string.get() + length, buffer);
buffer[length] = '\0';
STRINGN_TO_NPVARIANT(buffer, length, aVariant);
break;
}
case Variant::TPPluginScriptableObjectParent: {
NS_ASSERTION(aInstance, "Must have an instance!");
NPObject* object = NPObjectFromVariant(aRemoteVariant);
if (!object) {
NS_ERROR("Er, this shouldn't fail!");
return false;
}
const NPNetscapeFuncs* npn = GetNetscapeFuncs(aInstance);
if (!npn) {
NS_ERROR("Null netscape funcs!");
return false;
}
npn->retainobject(object);
OBJECT_TO_NPVARIANT(object, aVariant);
break;
}
case Variant::TPPluginScriptableObjectChild: {
NS_ASSERTION(!aInstance, "No instance should be given!");
NS_ASSERTION(XRE_GetProcessType() == GeckoProcessType_Plugin,
"Should be running on child only!");
NPObject* object = NPObjectFromVariant(aRemoteVariant);
NS_ASSERTION(object, "Null object?!");
PluginModuleChild::sBrowserFuncs.retainobject(object);
OBJECT_TO_NPVARIANT(object, aVariant);
break;
}
default:
NS_NOTREACHED("Shouldn't get here!");
return false;
}
return true;
}
template <class InstanceType>
bool
mozilla::plugins::ConvertToRemoteVariant(const NPVariant& aVariant,
Variant& aRemoteVariant,
InstanceType* aInstance,
bool aProtectActors)
{
if (NPVARIANT_IS_VOID(aVariant)) {
aRemoteVariant = mozilla::void_t();
}
else if (NPVARIANT_IS_NULL(aVariant)) {
aRemoteVariant = mozilla::null_t();
}
else if (NPVARIANT_IS_BOOLEAN(aVariant)) {
aRemoteVariant = NPVARIANT_TO_BOOLEAN(aVariant);
}
else if (NPVARIANT_IS_INT32(aVariant)) {
aRemoteVariant = NPVARIANT_TO_INT32(aVariant);
}
else if (NPVARIANT_IS_DOUBLE(aVariant)) {
aRemoteVariant = NPVARIANT_TO_DOUBLE(aVariant);
}
else if (NPVARIANT_IS_STRING(aVariant)) {
NPString str = NPVARIANT_TO_STRING(aVariant);
nsCString string(str.UTF8Characters, str.UTF8Length);
aRemoteVariant = string;
}
else if (NPVARIANT_IS_OBJECT(aVariant)) {
NPObject* object = NPVARIANT_TO_OBJECT(aVariant);
typename VariantTraits<InstanceType>::ScriptableObjectType* actor =
aInstance->GetActorForNPObject(object);
if (!actor) {
NS_ERROR("Null actor!");
return false;
}
if (aProtectActors) {
actor->Protect();
}
aRemoteVariant = actor;
}
else {
NS_NOTREACHED("Shouldn't get here!");
return false;
}
return true;
}