gecko-dev/dom/plugins/ipc/PluginScriptableObjectChild.h

239 lines
6.3 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/. */
#ifndef dom_plugins_PluginScriptableObjectChild_h
#define dom_plugins_PluginScriptableObjectChild_h 1
#include "mozilla/plugins/PPluginScriptableObjectChild.h"
#include "mozilla/plugins/PluginMessageUtils.h"
#include "npruntime.h"
namespace mozilla {
namespace plugins {
class PluginInstanceChild;
class PluginScriptableObjectChild;
class PPluginIdentifierChild;
struct ChildNPObject : NPObject
{
ChildNPObject()
: NPObject(), parent(nullptr), invalidated(false)
{
MOZ_COUNT_CTOR(ChildNPObject);
}
~ChildNPObject()
{
MOZ_COUNT_DTOR(ChildNPObject);
}
// |parent| is always valid as long as the actor is alive. Once the actor is
// destroyed this will be set to null.
PluginScriptableObjectChild* parent;
bool invalidated;
};
class PluginScriptableObjectChild : public PPluginScriptableObjectChild
{
friend class PluginInstanceChild;
public:
PluginScriptableObjectChild(ScriptableObjectType aType);
virtual ~PluginScriptableObjectChild();
void
InitializeProxy();
void
InitializeLocal(NPObject* aObject);
virtual bool
AnswerInvalidate() MOZ_OVERRIDE;
virtual bool
AnswerHasMethod(PPluginIdentifierChild* aId,
bool* aHasMethod) MOZ_OVERRIDE;
virtual bool
AnswerInvoke(PPluginIdentifierChild* aId,
const InfallibleTArray<Variant>& aArgs,
Variant* aResult,
bool* aSuccess) MOZ_OVERRIDE;
virtual bool
AnswerInvokeDefault(const InfallibleTArray<Variant>& aArgs,
Variant* aResult,
bool* aSuccess) MOZ_OVERRIDE;
virtual bool
AnswerHasProperty(PPluginIdentifierChild* aId,
bool* aHasProperty) MOZ_OVERRIDE;
virtual bool
AnswerGetChildProperty(PPluginIdentifierChild* aId,
bool* aHasProperty,
bool* aHasMethod,
Variant* aResult,
bool* aSuccess) MOZ_OVERRIDE;
virtual bool
AnswerSetProperty(PPluginIdentifierChild* aId,
const Variant& aValue,
bool* aSuccess) MOZ_OVERRIDE;
virtual bool
AnswerRemoveProperty(PPluginIdentifierChild* aId,
bool* aSuccess) MOZ_OVERRIDE;
virtual bool
AnswerEnumerate(InfallibleTArray<PPluginIdentifierChild*>* aProperties,
bool* aSuccess) MOZ_OVERRIDE;
virtual bool
AnswerConstruct(const InfallibleTArray<Variant>& aArgs,
Variant* aResult,
bool* aSuccess) MOZ_OVERRIDE;
virtual bool
RecvProtect() MOZ_OVERRIDE;
virtual bool
RecvUnprotect() MOZ_OVERRIDE;
NPObject*
GetObject(bool aCanResurrect);
static const NPClass*
GetClass()
{
return &sNPClass;
}
PluginInstanceChild*
GetInstance() const
{
return mInstance;
}
// Protect only affects LocalObject actors. It is called by the
// ProtectedVariant/Actor helper classes before the actor is used as an
// argument to an IPC call and when the parent process resurrects a
// proxy object to the NPObject associated with this actor.
void Protect();
// Unprotect only affects LocalObject actors. It is called by the
// ProtectedVariant/Actor helper classes after the actor is used as an
// argument to an IPC call and when the parent process is no longer using
// this actor.
void Unprotect();
// DropNPObject is only used for Proxy actors and is called when the child
// process is no longer using the NPObject associated with this actor. The
// parent process may subsequently use this actor again in which case a new
// NPObject will be created and associated with this actor (see
// ResurrectProxyObject).
void DropNPObject();
/**
* After NPP_Destroy, all NPObjects associated with an instance are
* destroyed. We are informed of this destruction. This should only be called
* on Local actors.
*/
void NPObjectDestroyed();
bool
Evaluate(NPString* aScript,
NPVariant* aResult);
ScriptableObjectType
Type() const {
return mType;
}
private:
static NPObject*
ScriptableAllocate(NPP aInstance,
NPClass* aClass);
static void
ScriptableInvalidate(NPObject* aObject);
static void
ScriptableDeallocate(NPObject* aObject);
static bool
ScriptableHasMethod(NPObject* aObject,
NPIdentifier aName);
static bool
ScriptableInvoke(NPObject* aObject,
NPIdentifier aName,
const NPVariant* aArgs,
uint32_t aArgCount,
NPVariant* aResult);
static bool
ScriptableInvokeDefault(NPObject* aObject,
const NPVariant* aArgs,
uint32_t aArgCount,
NPVariant* aResult);
static bool
ScriptableHasProperty(NPObject* aObject,
NPIdentifier aName);
static bool
ScriptableGetProperty(NPObject* aObject,
NPIdentifier aName,
NPVariant* aResult);
static bool
ScriptableSetProperty(NPObject* aObject,
NPIdentifier aName,
const NPVariant* aValue);
static bool
ScriptableRemoveProperty(NPObject* aObject,
NPIdentifier aName);
static bool
ScriptableEnumerate(NPObject* aObject,
NPIdentifier** aIdentifiers,
uint32_t* aCount);
static bool
ScriptableConstruct(NPObject* aObject,
const NPVariant* aArgs,
uint32_t aArgCount,
NPVariant* aResult);
NPObject*
CreateProxyObject();
// ResurrectProxyObject is only used with Proxy actors. It is called when the
// parent process uses an actor whose NPObject was deleted by the child
// process.
bool ResurrectProxyObject();
private:
PluginInstanceChild* mInstance;
NPObject* mObject;
bool mInvalidated;
int mProtectCount;
ScriptableObjectType mType;
static const NPClass sNPClass;
};
} /* namespace plugins */
} /* namespace mozilla */
#endif /* dom_plugins_PluginScriptableObjectChild_h */