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 :
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Plugin App.
*
* The Initial Developer of the Original Code is
* The Mozilla Foundation
* Portions created by the Initial Developer are Copyright (C) 2009
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Ben Turner <bent.mozilla@gmail.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#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();
NPUTF8* buffer = reinterpret_cast<NPUTF8*>(strdup(string.get()));
if (!buffer) {
NS_ERROR("Out of memory!");
return false;
}
STRINGN_TO_NPVARIANT(buffer, string.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(PluginModuleChild::current(),
"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;
}