sfx2/source/sidebar/AsynchronousCall.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <sfx2/sidebar/AsynchronousCall.hxx>
  21 #include <vcl/svapp.hxx>
  22
  23 namespace sfx2::sidebar {
  24
  25 AsynchronousCall::AsynchronousCall (const Action& rAction)
  26     : maAction(rAction),
  27       mnCallId(nullptr)
  28 {
  29 }
  30
  31 AsynchronousCall::~AsynchronousCall()
  32 {
  33     CancelRequest();
  34 }
  35
  36 void AsynchronousCall::RequestCall()
  37 {
  38     if (mnCallId == nullptr)
  39     {
  40         Link<void*,void> aLink (LINK(this, AsynchronousCall, HandleUserCall));
  41         mnCallId = Application::PostUserEvent(aLink);
  42     }
  43 }
  44
  45 void AsynchronousCall::CancelRequest()
  46 {
  47     if (mnCallId != nullptr)
  48     {
  49         Application::RemoveUserEvent(mnCallId);
  50         mnCallId = nullptr;
  51     }
  52 }
  53
  54 void AsynchronousCall::Sync()
  55 {
  56     if (mnCallId != nullptr) {
  57         maAction();
  58         CancelRequest();
  59     }
  60 }
  61
  62 IMPL_LINK_NOARG(AsynchronousCall, HandleUserCall, void*, void )
  63 {
  64     mnCallId = nullptr;
  65     if (maAction)
  66         maAction();
  67 }
  68
  69 } // end of namespace sfx2::sidebar
  70
  71 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */