gecko-dev/dom/plugins/ipc/PluginIdentifierParent.cpp
2012-05-21 12:12:37 +01:00

87 lines
2.1 KiB
C++

/* -*- 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 "PluginIdentifierParent.h"
#include "nsServiceManagerUtils.h"
#include "nsNPAPIPlugin.h"
#include "nsIJSContextStack.h"
#include "PluginScriptableObjectUtils.h"
#include "mozilla/unused.h"
using namespace mozilla::plugins::parent;
namespace mozilla {
namespace plugins {
bool
PluginIdentifierParent::RecvRetain()
{
mTemporaryRefs = 0;
// Intern the jsid if necessary.
jsid id = NPIdentifierToJSId(mIdentifier);
if (JSID_IS_INT(id)) {
return true;
}
// The following is what nsNPAPIPlugin.cpp does. Gross, but the API doesn't
// give you a NPP to play with.
nsCOMPtr<nsIThreadJSContextStack> stack =
do_GetService("@mozilla.org/js/xpc/ContextStack;1");
if (!stack) {
return false;
}
JSContext* cx = stack->GetSafeJSContext();
if (!cx) {
return false;
}
JSAutoRequest ar(cx);
JSString* str = JSID_TO_STRING(id);
JSString* str2 = JS_InternJSString(cx, str);
if (!str2) {
return false;
}
NS_ASSERTION(str == str2, "Interning a string in a JSID should always return the same string.");
return true;
}
PluginIdentifierParent::StackIdentifier::StackIdentifier
(PluginInstanceParent* inst, NPIdentifier aIdentifier)
: mIdentifier(inst->Module()->GetIdentifierForNPIdentifier(inst->GetNPP(), aIdentifier))
{
}
PluginIdentifierParent::StackIdentifier::StackIdentifier
(NPObject* aObject, NPIdentifier aIdentifier)
: mIdentifier(NULL)
{
PluginInstanceParent* inst = GetInstance(aObject);
mIdentifier = inst->Module()->GetIdentifierForNPIdentifier(inst->GetNPP(), aIdentifier);
}
PluginIdentifierParent::StackIdentifier::~StackIdentifier()
{
if (!mIdentifier) {
return;
}
if (!mIdentifier->IsTemporary()) {
return;
}
if (mIdentifier->RemoveTemporaryRef()) {
unused << PPluginIdentifierParent::Send__delete__(mIdentifier);
}
}
} // namespace mozilla::plugins
} // namespace mozilla