gecko/dom/plugins/PPluginModule.ipdl

/* -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 8 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Mozilla Plugins.
 *
 * The Initial Developer of the Original Code is
 *   Chris Jones <jones.chris.g@gmail.com>.
 * Portions created by the Initial Developer are Copyright (C) 2009
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Benjamin Smedberg <benjamin@smedbergs.us>
 *   Ben Turner <bent.mozilla@gmail.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
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 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

include protocol PPluginIdentifier;
include protocol PPluginInstance;

include "npapi.h";
include "mozilla/plugins/PluginMessageUtils.h";

using NPError;
using NPNVariable;
using base::FileDescriptor;
using mozilla::plugins::NativeThreadId;

namespace mozilla {
namespace plugins {

rpc protocol PPluginModule
{
  manages PPluginInstance;
  manages PPluginIdentifier;

both:
  /**
   * Sending a void string to this constructor creates an int identifier whereas
   * sending a non-void string will create a string identifier. This constructor
   * may be called by either child or parent. If a race occurs by calling the
   * constructor with the same string or int argument then we create two actors
   * and detect the second instance in the child. We prevent the parent's actor
   * from leaking out to plugin code and only allow the child's to be used.
   */
  async PPluginIdentifier(nsCString aString,
                          int32_t aInt);

child:
  // Return the plugin's thread ID, if it can be found.
  rpc NP_Initialize()
    returns (NativeThreadId tid, NPError rv);

  rpc PPluginInstance(nsCString aMimeType,
                      uint16_t aMode,
                      nsCString[] aNames,
                      nsCString[] aValues)
    returns (NPError rv);

  rpc NP_Shutdown()
    returns (NPError rv);

parent:
  /**
   * This message is only used on X11 platforms.
   *
   * Send a dup of the plugin process's X socket to the parent
   * process.  In theory, this scheme keeps the plugin's X resources
   * around until after both the plugin process shuts down *and* the
   * parent process closes the dup fd.  This is used to prevent the
   * parent process from crashing on X errors if, e.g., the plugin
   * crashes *just before* a repaint and the parent process tries to
   * use the newly-invalid surface.
   */
  async BackUpXResources(FileDescriptor aXSocketFd);

  rpc NPN_UserAgent()
    returns (nsCString userAgent);

  rpc NPN_GetValue_WithBoolReturn(NPNVariable aVariable)
    returns (NPError aError,
             bool aBoolVal);

  // Wake up and process a few native events.  Periodically called by
  // Gtk-specific code upon detecting that the plugin process has
  // entered a nested event loop.  If the browser doesn't process
  // native events, then "livelock" and some other glitches can occur.
  rpc ProcessSomeEvents();

  // Window-specific message which instructs the RPC mechanism to enter
  // a nested event loop for the current RPC call.
  async ProcessNativeEventsInRPCCall();

  sync AppendNotesToCrashReport(nsCString aNotes);

  // OS X Specific calls to manage the plugin's window
  // when interposing system calls.
  async PluginShowWindow(uint32_t aWindowId, bool aModal,
                         int32_t aX, int32_t aY,
                         size_t aWidth, size_t aHeight);
  async PluginHideWindow(uint32_t aWindowId);
};

} // namespace plugins
} // namespace mozilla