gecko-dev/dom/plugins/ipc/PluginIdentifierParent.cpp

121 строка
3.6 KiB
C++

/* -*- 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 Plugins.
*
* The Initial Developer of the Original Code is
* Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2010
* 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 "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 = nsnull;
stack->GetSafeJSContext(&cx);
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