1// Copyright 2013 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4// 5// Helper functions that are used by the NPObject proxy and stub. 6 7#ifndef CONTENT_NPAPI_CHILD_NPOBJECT_UTIL_H_ 8#define CONTENT_NPAPI_CHILD_NPOBJECT_UTIL_H_ 9 10#include "build/build_config.h" 11 12#if defined(OS_WIN) 13#include <windows.h> 14#endif 15 16#include "content/child/npapi/npobject_stub.h" 17 18class GURL; 19 20struct _NPVariant; 21 22typedef _NPVariant NPVariant; 23typedef void *NPIdentifier; 24 25namespace content { 26class NPChannelBase; 27struct NPIdentifier_Param; 28struct NPVariant_Param; 29 30// Needs to be called early in the plugin process lifetime, before any 31// plugin instances are initialized. 32void PatchNPNFunctions(); 33 34// Returns true if the current process is a plugin process, or false otherwise. 35bool IsPluginProcess(); 36 37// Creates an object similar to NPIdentifier that can be marshalled. 38void CreateNPIdentifierParam(NPIdentifier id, NPIdentifier_Param* param); 39 40// Creates an NPIdentifier from the marshalled object. 41NPIdentifier CreateNPIdentifier(const NPIdentifier_Param& param); 42 43// Creates an object similar to NPVariant that can be marshalled. 44// If the containing NPObject happens to be an NPObject, then a stub 45// is created around it and param holds the routing id for it. 46// If release is true, the NPVariant object is released (except if 47// it contains an NPObject, since the stub will manage its lifetime). 48void CreateNPVariantParam(const NPVariant& variant, 49 NPChannelBase* channel, 50 NPVariant_Param* param, 51 bool release, 52 int render_view_id, 53 const GURL& page_url); 54 55// Creates an NPVariant from the marshalled object. 56// Returns true on success. 57bool CreateNPVariant(const NPVariant_Param& param, 58 NPChannelBase* channel, 59 NPVariant* result, 60 int render_view_id, 61 const GURL& page_url); 62 63#if defined(OS_WIN) 64// Given a plugin's HWND, returns an event associated with the WebContentsImpl 65// that's set when inside a messagebox. This tells the plugin process that 66// the message queue should be pumped (as what would happen if everything was 67// in-process). This avoids deadlocks when a plugin invokes javascript that 68// causes a message box to come up. 69HANDLE GetMessageBoxEvent(HWND hwnd); 70#endif // defined(OS_WIN) 71 72} // namespace content 73 74#endif // CONTENT_NPAPI_CHILD_NPOBJECT_UTIL_H_ 75