gecko/dom/plugins/ipc/PluginIdentifierParent.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: sw=2 ts=2 et :
2012-05-21 04:12:37 -07:00
* 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/. */
#ifndef dom_plugins_PluginIdentifierParent_h
#define dom_plugins_PluginIdentifierParent_h
#include "mozilla/plugins/PPluginIdentifierParent.h"
#include "npapi.h"
#include "npruntime.h"
namespace mozilla {
namespace plugins {
class PluginInstanceParent;
class PluginIdentifierParent : public PPluginIdentifierParent
{
friend class PluginModuleParent;
public:
NPIdentifier ToNPIdentifier()
{
return mIdentifier;
}
bool IsTemporary() {
return !!mTemporaryRefs;
}
/**
* Holds a perhaps-temporary identifier for the current stack frame.
*/
class NS_STACK_CLASS StackIdentifier
{
public:
StackIdentifier(PluginInstanceParent* inst, NPIdentifier aIdentifier);
StackIdentifier(NPObject* aObject, NPIdentifier aIdentifier);
~StackIdentifier();
operator PluginIdentifierParent*() {
return mIdentifier;
}
private:
DISALLOW_COPY_AND_ASSIGN(StackIdentifier);
PluginIdentifierParent* mIdentifier;
};
protected:
PluginIdentifierParent(NPIdentifier aIdentifier, bool aTemporary)
: mIdentifier(aIdentifier)
, mTemporaryRefs(aTemporary ? 1 : 0)
{
MOZ_COUNT_CTOR(PluginIdentifierParent);
}
virtual ~PluginIdentifierParent()
{
MOZ_COUNT_DTOR(PluginIdentifierParent);
}
virtual bool RecvRetain();
void AddTemporaryRef() {
mTemporaryRefs++;
}
/**
* @returns true if the last temporary reference was removed.
*/
bool RemoveTemporaryRef() {
--mTemporaryRefs;
return !mTemporaryRefs;
}
private:
NPIdentifier mIdentifier;
unsigned int mTemporaryRefs;
};
} // namespace plugins
} // namespace mozilla
#endif // dom_plugins_PluginIdentifierParent_h