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 <utility>
  22 #include <vcl/svapp.hxx>
  23
  24 namespace sfx2::sidebar {
  25
  26 AsynchronousCall::AsynchronousCall (Action aAction)
  27     : maAction(std::move(aAction)),
  28       mnCallId(nullptr)
  29 {
  30 }
  31
  32 AsynchronousCall::~AsynchronousCall()
  33 {
  34     CancelRequest();
  35 }
  36
  37 void AsynchronousCall::RequestCall()
  38 {
  39     if (mnCallId == nullptr)
  40     {
  41         Link<void*,void> aLink (LINK(this, AsynchronousCall, HandleUserCall));
  42         mnCallId = Application::PostUserEvent(aLink);
  43     }
  44 }
  45
  46 void AsynchronousCall::CancelRequest()
  47 {
  48     if (mnCallId != nullptr)
  49     {
  50         Application::RemoveUserEvent(mnCallId);
  51         mnCallId = nullptr;
  52     }
  53 }
  54
  55 void AsynchronousCall::Sync()
  56 {
  57     if (mnCallId != nullptr) {
  58         maAction();
  59         CancelRequest();
  60     }
  61 }
  62
  63 IMPL_LINK_NOARG(AsynchronousCall, HandleUserCall, void*, void )
  64 {
  65     mnCallId = nullptr;
  66     if (maAction)
  67         maAction();
  68 }
  69
  70 } // end of namespace sfx2::sidebar
  71
  72 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */