forked from mirrors/gecko-dev
0f01791ffc
For cases where the class has direct calls (that is, we cast `this` to the subclass before making the call) no longer declare Recv/Answer methods on the base class at all. This should ensure that slots for them are not generated in vtables, and also allow the derived class to choose the method signature (e.g. whether it wants to take something by reference or by value). Differential Revision: https://phabricator.services.mozilla.com/D18132 --HG-- extra : moz-landing-system : lando
169 lines
6.2 KiB
C++
169 lines
6.2 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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#ifndef dom_plugins_PluginScriptableObjectParent_h
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#define dom_plugins_PluginScriptableObjectParent_h 1
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#include "mozilla/plugins/PPluginScriptableObjectParent.h"
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#include "mozilla/plugins/PluginMessageUtils.h"
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#include "npfunctions.h"
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#include "npruntime.h"
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namespace mozilla {
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namespace plugins {
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class PluginInstanceParent;
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class PluginScriptableObjectParent;
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struct ParentNPObject : NPObject {
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ParentNPObject()
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: NPObject(), parent(nullptr), invalidated(false), asyncWrapperCount(0) {}
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// |parent| is always valid as long as the actor is alive. Once the actor is
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// destroyed this will be set to null.
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PluginScriptableObjectParent* parent;
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bool invalidated;
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int32_t asyncWrapperCount;
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};
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class PluginScriptableObjectParent : public PPluginScriptableObjectParent {
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friend class PluginInstanceParent;
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public:
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explicit PluginScriptableObjectParent(ScriptableObjectType aType);
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virtual ~PluginScriptableObjectParent();
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void InitializeProxy();
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void InitializeLocal(NPObject* aObject);
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virtual void ActorDestroy(ActorDestroyReason aWhy) override;
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mozilla::ipc::IPCResult AnswerHasMethod(const PluginIdentifier& aId,
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bool* aHasMethod);
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mozilla::ipc::IPCResult AnswerInvoke(const PluginIdentifier& aId,
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InfallibleTArray<Variant>&& aArgs,
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Variant* aResult, bool* aSuccess);
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mozilla::ipc::IPCResult AnswerInvokeDefault(InfallibleTArray<Variant>&& aArgs,
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Variant* aResult, bool* aSuccess);
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mozilla::ipc::IPCResult AnswerHasProperty(const PluginIdentifier& aId,
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bool* aHasProperty);
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mozilla::ipc::IPCResult AnswerGetParentProperty(const PluginIdentifier& aId,
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Variant* aResult,
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bool* aSuccess);
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mozilla::ipc::IPCResult AnswerSetProperty(const PluginIdentifier& aId,
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const Variant& aValue,
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bool* aSuccess);
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mozilla::ipc::IPCResult AnswerRemoveProperty(const PluginIdentifier& aId,
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bool* aSuccess);
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mozilla::ipc::IPCResult AnswerEnumerate(
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InfallibleTArray<PluginIdentifier>* aProperties, bool* aSuccess);
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mozilla::ipc::IPCResult AnswerConstruct(InfallibleTArray<Variant>&& aArgs,
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Variant* aResult, bool* aSuccess);
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mozilla::ipc::IPCResult AnswerNPN_Evaluate(const nsCString& aScript,
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Variant* aResult, bool* aSuccess);
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mozilla::ipc::IPCResult RecvProtect();
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mozilla::ipc::IPCResult RecvUnprotect();
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static const NPClass* GetClass() { return &sNPClass; }
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PluginInstanceParent* GetInstance() const { return mInstance; }
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NPObject* GetObject(bool aCanResurrect);
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// Protect only affects LocalObject actors. It is called by the
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// ProtectedVariant/Actor helper classes before the actor is used as an
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// argument to an IPC call and when the child process resurrects a
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// proxy object to the NPObject associated with this actor.
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void Protect();
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// Unprotect only affects LocalObject actors. It is called by the
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// ProtectedVariant/Actor helper classes after the actor is used as an
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// argument to an IPC call and when the child process is no longer using this
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// actor.
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void Unprotect();
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// DropNPObject is only used for Proxy actors and is called when the parent
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// process is no longer using the NPObject associated with this actor. The
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// child process may subsequently use this actor again in which case a new
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// NPObject will be created and associated with this actor (see
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// ResurrectProxyObject).
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void DropNPObject();
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ScriptableObjectType Type() const { return mType; }
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bool GetPropertyHelper(NPIdentifier aName, bool* aHasProperty,
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bool* aHasMethod, NPVariant* aResult);
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private:
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static NPObject* ScriptableAllocate(NPP aInstance, NPClass* aClass);
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static void ScriptableInvalidate(NPObject* aObject);
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static void ScriptableDeallocate(NPObject* aObject);
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static bool ScriptableHasMethod(NPObject* aObject, NPIdentifier aName);
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static bool ScriptableInvoke(NPObject* aObject, NPIdentifier aName,
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const NPVariant* aArgs, uint32_t aArgCount,
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NPVariant* aResult);
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static bool ScriptableInvokeDefault(NPObject* aObject, const NPVariant* aArgs,
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uint32_t aArgCount, NPVariant* aResult);
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static bool ScriptableHasProperty(NPObject* aObject, NPIdentifier aName);
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static bool ScriptableGetProperty(NPObject* aObject, NPIdentifier aName,
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NPVariant* aResult);
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static bool ScriptableSetProperty(NPObject* aObject, NPIdentifier aName,
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const NPVariant* aValue);
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static bool ScriptableRemoveProperty(NPObject* aObject, NPIdentifier aName);
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static bool ScriptableEnumerate(NPObject* aObject,
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NPIdentifier** aIdentifiers,
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uint32_t* aCount);
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static bool ScriptableConstruct(NPObject* aObject, const NPVariant* aArgs,
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uint32_t aArgCount, NPVariant* aResult);
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NPObject* CreateProxyObject();
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// ResurrectProxyObject is only used with Proxy actors. It is called when the
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// child process uses an actor whose NPObject was deleted by the parent
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// process.
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bool ResurrectProxyObject();
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private:
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PluginInstanceParent* mInstance;
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// This may be a ParentNPObject or some other kind depending on who created
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// it. Have to check its class to find out.
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NPObject* mObject;
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int mProtectCount;
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ScriptableObjectType mType;
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static const NPClass sNPClass;
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};
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} /* namespace plugins */
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} /* namespace mozilla */
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#endif /* dom_plugins_PluginScriptableObjectParent_h */
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