C++ PluginInstanceParent类代码示例

PluginIdentifierParent::StackIdentifier::StackIdentifier
    (NPObject* aObject, NPIdentifier aIdentifier)
  : mIdentifier(NULL)
{
  PluginInstanceParent* inst = GetInstance(aObject);
  mIdentifier = inst->Module()->GetIdentifierForNPIdentifier(inst->GetNPP(), aIdentifier);
}

nsresult
PluginModuleParent::GetImageContainer(NPP instance,
                             mozilla::layers::ImageContainer** aContainer)
{
    PluginInstanceParent* i = InstCast(instance);
    return !i ? NS_ERROR_FAILURE : i->GetImageContainer(aContainer);
}

void
PluginModuleParent::NPP_Print(NPP instance, NPPrint* platformPrint)
{
    PluginInstanceParent* i = InstCast(instance);
    if (i)
        i->NPP_Print(platformPrint);
}

bool
PluginScriptableObjectParent::AnswerRemoveProperty(PPluginIdentifierParent* aId,
                                                   bool* aSuccess)
{
  if (!mObject) {
    NS_WARNING("Calling AnswerRemoveProperty with an invalidated object!");
    *aSuccess = false;
    return true;
  }

  NS_ASSERTION(mObject->_class != GetClass(), "Bad object type!");
  NS_ASSERTION(mType == LocalObject, "Bad type!");

  PluginInstanceParent* instance = GetInstance();
  if (!instance) {
    NS_ERROR("No instance?!");
    *aSuccess = false;
    return true;
  }

  const NPNetscapeFuncs* npn = GetNetscapeFuncs(instance);
  if (!npn) {
    NS_ERROR("No netscape funcs?!");
    *aSuccess = false;
    return true;
  }

  PluginIdentifierParent* id = static_cast<PluginIdentifierParent*>(aId);
  *aSuccess = npn->removeproperty(instance->GetNPP(), mObject,
                                  id->ToNPIdentifier());
  return true;
}

bool
PluginScriptableObjectParent::AnswerEnumerate(InfallibleTArray<PPluginIdentifierParent*>* aProperties,
                                              bool* aSuccess)
{
  if (!mObject) {
    NS_WARNING("Calling AnswerEnumerate with an invalidated object!");
    *aSuccess = false;
    return true;
  }

  NS_ASSERTION(mObject->_class != GetClass(), "Bad object type!");
  NS_ASSERTION(mType == LocalObject, "Bad type!");

  PluginInstanceParent* instance = GetInstance();
  if (!instance) {
    NS_ERROR("No instance?!");
    *aSuccess = false;
    return true;
  }

  const NPNetscapeFuncs* npn = GetNetscapeFuncs(instance);
  if (!npn) {
    NS_WARNING("No netscape funcs?!");
    *aSuccess = false;
    return true;
  }

  NPIdentifier* ids;
  uint32_t idCount;
  if (!npn->enumerate(instance->GetNPP(), mObject, &ids, &idCount)) {
    *aSuccess = false;
    return true;
  }

  aProperties->SetCapacity(idCount);

  mozilla::AutoSafeJSContext cx;
  for (uint32_t index = 0; index < idCount; index++) {
    // Because of GC hazards, all identifiers returned from enumerate
    // must be made permanent.
    if (_identifierisstring(ids[index])) {
      JSString* str = NPIdentifierToString(ids[index]);
      if (!JS_StringHasBeenInterned(cx, str)) {
        DebugOnly<JSString*> str2 = JS_InternJSString(cx, str);
        NS_ASSERTION(str2 == str, "Interning a JS string which is currently an ID should return itself.");
      }
    }
    PluginIdentifierParent* id =
      instance->Module()->GetIdentifierForNPIdentifier(instance->GetNPP(), ids[index]);
    aProperties->AppendElement(id);
    NS_ASSERTION(!id->IsTemporary(), "Should only have permanent identifiers!");
  }

  npn->memfree(ids);
  *aSuccess = true;
  return true;
}

nsresult
PluginModuleParent::NPP_New(NPMIMEType pluginType, NPP instance,
                            uint16_t mode, int16_t argc, char* argn[],
                            char* argv[], NPSavedData* saved,
                            NPError* error)
{
    PLUGIN_LOG_DEBUG_METHOD;

    if (mShutdown) {
        *error = NPERR_GENERIC_ERROR;
        return NS_ERROR_FAILURE;
    }

    // create the instance on the other side
    InfallibleTArray<nsCString> names;
    InfallibleTArray<nsCString> values;

    for (int i = 0; i < argc; ++i) {
        names.AppendElement(NullableString(argn[i]));
        values.AppendElement(NullableString(argv[i]));
    }

    PluginInstanceParent* parentInstance =
        new PluginInstanceParent(this, instance,
                                 nsDependentCString(pluginType), mNPNIface);

    if (!parentInstance->Init()) {
        delete parentInstance;
        return NS_ERROR_FAILURE;
    }

    instance->pdata = parentInstance;

    if (!CallPPluginInstanceConstructor(parentInstance,
                                        nsDependentCString(pluginType), mode,
                                        names, values, error)) {
        // |parentInstance| is automatically deleted.
        instance->pdata = nsnull;
        // if IPC is down, we'll get an immediate "failed" return, but
        // without *error being set.  So make sure that the error
        // condition is signaled to nsNPAPIPluginInstance
        if (NPERR_NO_ERROR == *error)
            *error = NPERR_GENERIC_ERROR;
        return NS_ERROR_FAILURE;
    }

    if (*error != NPERR_NO_ERROR) {
        NPP_Destroy(instance, 0);
        return NS_ERROR_FAILURE;
    }

    TimeoutChanged(kParentTimeoutPref, this);
    
    return NS_OK;
}

bool
PluginScriptableObjectParent::AnswerEnumerate(nsTArray<PPluginIdentifierParent*>* aProperties,
                                              bool* aSuccess)
{
  if (!mObject) {
    NS_WARNING("Calling AnswerEnumerate with an invalidated object!");
    *aSuccess = false;
    return true;
  }

  NS_ASSERTION(mObject->_class != GetClass(), "Bad object type!");
  NS_ASSERTION(mType == LocalObject, "Bad type!");

  PluginInstanceParent* instance = GetInstance();
  if (!instance) {
    NS_ERROR("No instance?!");
    *aSuccess = false;
    return true;
  }

  const NPNetscapeFuncs* npn = GetNetscapeFuncs(instance);
  if (!npn) {
    NS_WARNING("No netscape funcs?!");
    *aSuccess = false;
    return true;
  }

  NPIdentifier* ids;
  uint32_t idCount;
  if (!npn->enumerate(instance->GetNPP(), mObject, &ids, &idCount)) {
    *aSuccess = false;
    return true;
  }

  if (!aProperties->SetCapacity(idCount)) {
    npn->memfree(ids);
    *aSuccess = false;
    return true;
  }

  for (uint32_t index = 0; index < idCount; index++) {
    aProperties->AppendElement(GetIdentifier(instance, ids[index]));
  }

  npn->memfree(ids);
  *aSuccess = true;
  return true;
}

bool
PluginScriptableObjectParent::AnswerNPN_Evaluate(const nsCString& aScript,
                                                 Variant* aResult,
                                                 bool* aSuccess)
{
  PluginInstanceParent* instance = GetInstance();
  if (!instance) {
    NS_ERROR("No instance?!");
    *aResult = void_t();
    *aSuccess = false;
    return true;
  }

  const NPNetscapeFuncs* npn = GetNetscapeFuncs(instance);
  if (!npn) {
    NS_ERROR("No netscape funcs?!");
    *aResult = void_t();
    *aSuccess = false;
    return true;
  }

  NPString script = { aScript.get(), aScript.Length() };

  NPVariant result;
  bool success = npn->evaluate(instance->GetNPP(), mObject, &script, &result);
  if (!success) {
    *aResult = void_t();
    *aSuccess = false;
    return true;
  }

  Variant convertedResult;
  success = ConvertToRemoteVariant(result, convertedResult, instance);

  DeferNPVariantLastRelease(npn, &result);

  if (!success) {
    *aResult = void_t();
    *aSuccess = false;
    return true;
  }

  *aSuccess = true;
  *aResult = convertedResult;
  return true;
}

void
PluginScriptableObjectParent::DropNPObject()
{
  NS_ASSERTION(mObject, "Invalidated object!");
  NS_ASSERTION(mObject->_class == GetClass(), "Wrong type of object!");
  NS_ASSERTION(mType == Proxy, "Shouldn't call this for non-proxy object!");

  // We think we're about to be deleted, but we could be racing with the other
  // process.
  PluginInstanceParent* instance = GetInstance();
  NS_ASSERTION(instance, "Must have an instance!");

  instance->UnregisterNPObject(mObject);
  mObject = nullptr;

  unused << SendUnprotect();
}

bool
PluginWidgetChild::RecvSetScrollCaptureId(const uint64_t& aScrollCaptureId,
                                          const uintptr_t& aPluginInstanceId)
{
#if defined(XP_WIN)
  PluginInstanceParent* instance =
    PluginInstanceParent::LookupPluginInstanceByID(aPluginInstanceId);
  if (instance) {
    NS_WARN_IF(NS_FAILED(instance->SetScrollCaptureId(aScrollCaptureId)));
  }

  return true;
#else
  MOZ_ASSERT_UNREACHABLE(
    "PluginWidgetChild::RecvSetScrollCaptureId calls not expected.");
  return false;
#endif
}

NPError
PluginAsyncSurrogate::NPP_GetValue(NPPVariable aVariable, void* aRetval)
{
  if (aVariable != NPPVpluginScriptableNPObject) {
    if (!WaitForInit()) {
      return NPERR_GENERIC_ERROR;
    }
    PluginInstanceParent* instance = PluginInstanceParent::Cast(mInstance);
    MOZ_ASSERT(instance);
    return instance->NPP_GetValue(aVariable, aRetval);
  }

  NPObject* npobject = parent::_createobject(mInstance,
                                             const_cast<NPClass*>(GetClass()));
  MOZ_ASSERT(npobject);
  MOZ_ASSERT(npobject->_class == GetClass());
  MOZ_ASSERT(npobject->referenceCount == 1);
  *(NPObject**)aRetval = npobject;
  return npobject ? NPERR_NO_ERROR : NPERR_GENERIC_ERROR;
}

NPError
PluginModuleParent::NPP_Destroy(NPP instance,
                                NPSavedData** /*saved*/)
{
    // FIXME/cjones:
    //  (1) send a "destroy" message to the child
    //  (2) the child shuts down its instance
    //  (3) remove both parent and child IDs from map
    //  (4) free parent
    PLUGIN_LOG_DEBUG_FUNCTION;

    PluginInstanceParent* parentInstance =
        static_cast<PluginInstanceParent*>(instance->pdata);

    if (!parentInstance)
        return NPERR_NO_ERROR;

    NPError retval = parentInstance->Destroy();
    instance->pdata = nsnull;

    unused << PluginInstanceParent::Call__delete__(parentInstance);
    return retval;
}

bool nsWindow::OnPaint(HDC aDC, uint32_t aNestingLevel)
{
  // We never have reentrant paint events, except when we're running our RPC
  // windows event spin loop. If we don't trap for this, we'll try to paint,
  // but view manager will refuse to paint the surface, resulting is black
  // flashes on the plugin rendering surface.
  if (mozilla::ipc::RPCChannel::IsSpinLoopActive() && mPainting)
    return false;

  if (mWindowType == eWindowType_plugin) {

    /**
     * After we CallUpdateWindow to the child, occasionally a WM_PAINT message
     * is posted to the parent event loop with an empty update rect. Do a
     * dummy paint so that Windows stops dispatching WM_PAINT in an inifinite
     * loop. See bug 543788.
     */
    RECT updateRect;
    if (!GetUpdateRect(mWnd, &updateRect, FALSE) ||
        (updateRect.left == updateRect.right &&
         updateRect.top == updateRect.bottom)) {
      PAINTSTRUCT ps;
      BeginPaint(mWnd, &ps);
      EndPaint(mWnd, &ps);
      return true;
    }

    PluginInstanceParent* instance = reinterpret_cast<PluginInstanceParent*>(
      ::GetPropW(mWnd, L"PluginInstanceParentProperty"));
    if (instance) {
      unused << instance->CallUpdateWindow();
    } else {
      // We should never get here since in-process plugins should have
      // subclassed our HWND and handled WM_PAINT, but in some cases that
      // could fail. Return without asserting since it's not our fault.
      NS_WARNING("Plugin failed to subclass our window");
    }

    ValidateRect(mWnd, NULL);
    return true;
  }

  // Do an early async composite so that we at least have something on screen
  // in the right place, even if the content is out of date.
  if (GetLayerManager()->GetBackendType() == LAYERS_CLIENT &&
      mCompositorParent) {
    mCompositorParent->ScheduleRenderOnCompositorThread();
  }

  nsIWidgetListener* listener = GetPaintListener();
  if (listener) {
    listener->WillPaintWindow(this);
  }
  // Re-get the listener since the will paint notification may have killed it.
  listener = GetPaintListener();
  if (!listener)
    return false;

  bool result = true;
  PAINTSTRUCT ps;

#ifdef MOZ_XUL
  if (!aDC && (eTransparencyTransparent == mTransparencyMode))
  {
    // For layered translucent windows all drawing should go to memory DC and no
    // WM_PAINT messages are normally generated. To support asynchronous painting
    // we force generation of WM_PAINT messages by invalidating window areas with
    // RedrawWindow, InvalidateRect or InvalidateRgn function calls.
    // BeginPaint/EndPaint must be called to make Windows think that invalid area
    // is painted. Otherwise it will continue sending the same message endlessly.
    ::BeginPaint(mWnd, &ps);
    ::EndPaint(mWnd, &ps);

    aDC = mMemoryDC;
  }
#endif

  mPainting = true;

#ifdef WIDGET_DEBUG_OUTPUT
  HRGN debugPaintFlashRegion = NULL;
  HDC debugPaintFlashDC = NULL;

  if (debug_WantPaintFlashing())
  {
    debugPaintFlashRegion = ::CreateRectRgn(0, 0, 0, 0);
    ::GetUpdateRgn(mWnd, debugPaintFlashRegion, TRUE);
    debugPaintFlashDC = ::GetDC(mWnd);
  }
#endif // WIDGET_DEBUG_OUTPUT

  HDC hDC = aDC ? aDC : (::BeginPaint(mWnd, &ps));
  if (!IsRenderMode(gfxWindowsPlatform::RENDER_DIRECT2D)) {
    mPaintDC = hDC;
  }

#ifdef MOZ_XUL
  bool forceRepaint = aDC || (eTransparencyTransparent == mTransparencyMode);
#else
  bool forceRepaint = NULL != aDC;
//.........这里部分代码省略.........