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